Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:

	arch/x86/kernel/io_apic.c

126 files changed, 43631 insertions, 571 deletions

diff --git a/arch/sparc/kernel/.gitignore b/arch/sparc/kernel/.gitignore
new file mode 100644
index 000000000000..c5f676c3c224
--- /dev/null
+++ b/arch/sparc/kernel/.gitignore
@@ -0,0 +1 @@
+vmlinux.lds
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 2d6582095099..53adcaa0348b 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -2,25 +2,98 @@
 # Makefile for the linux kernel.
 #
 
-extra-y		:= head.o init_task.o vmlinux.lds
-
-EXTRA_AFLAGS	:= -ansi
-
-IRQ_OBJS := irq.o sun4m_irq.o sun4c_irq.o sun4d_irq.o
-obj-y    := entry.o wof.o wuf.o etrap.o rtrap.o traps.o $(IRQ_OBJS) \
-	    process.o signal.o ioport.o setup.o idprom.o \
-	    sys_sparc.o systbls.o \
-	    time.o windows.o cpu.o devices.o \
-	    tadpole.o tick14.o ptrace.o \
-	    unaligned.o una_asm.o muldiv.o \
-	    prom.o of_device.o devres.o dma.o
-
-devres-y = ../../../kernel/irq/devres.o
-
-obj-$(CONFIG_PCI) += pcic.o
-obj-$(CONFIG_SMP) += trampoline.o smp.o sun4m_smp.o sun4d_smp.o
-obj-$(CONFIG_SUN_AUXIO) += auxio.o
-obj-$(CONFIG_SUN_PM) += apc.o pmc.o
-obj-$(CONFIG_MODULES) += module.o sparc_ksyms.o
-obj-$(CONFIG_SPARC_LED) += led.o
-obj-$(CONFIG_KGDB) += kgdb.o
+asflags-y := -ansi
+ccflags-y := -Werror
+
+extra-y     := head_$(BITS).o
+extra-y     += init_task.o
+extra-y     += vmlinux.lds
+
+obj-$(CONFIG_SPARC32)   += entry.o wof.o wuf.o
+obj-$(CONFIG_SPARC32)   += etrap_32.o
+obj-$(CONFIG_SPARC32)   += rtrap_32.o
+obj-y                   += traps_$(BITS).o
+
+# IRQ
+obj-y                   += irq_$(BITS).o
+obj-$(CONFIG_SPARC32)   += sun4m_irq.o sun4c_irq.o sun4d_irq.o
+
+obj-y                   += process_$(BITS).o
+obj-y                   += signal_$(BITS).o
+obj-$(CONFIG_SPARC32)   += ioport.o
+obj-y                   += setup_$(BITS).o
+obj-y                   += idprom.o
+obj-y                   += sys_sparc_$(BITS).o
+obj-$(CONFIG_SPARC32)   += systbls_32.o
+obj-y                   += time_$(BITS).o
+obj-$(CONFIG_SPARC32)   += windows.o
+obj-y                   += cpu.o
+obj-$(CONFIG_SPARC32)   += devices.o
+obj-$(CONFIG_SPARC32)   += tadpole.o
+obj-$(CONFIG_SPARC32)   += tick14.o
+obj-y                   += ptrace_$(BITS).o
+obj-y                   += unaligned_$(BITS).o
+obj-y                   += una_asm_$(BITS).o
+obj-$(CONFIG_SPARC32)   += muldiv.o
+obj-y                   += prom_common.o
+obj-y                   += prom_$(BITS).o
+obj-y                   += of_device_$(BITS).o
+obj-$(CONFIG_SPARC64)   += prom_irqtrans.o
+
+obj-$(CONFIG_SPARC64)   += reboot.o
+obj-$(CONFIG_SPARC64)   += sysfs.o
+obj-$(CONFIG_SPARC64)   += iommu.o
+obj-$(CONFIG_SPARC64)   += central.o
+obj-$(CONFIG_SPARC64)   += starfire.o
+obj-$(CONFIG_SPARC64)   += power.o
+obj-$(CONFIG_SPARC64)   += sbus.o
+obj-$(CONFIG_SPARC64)   += ebus.o
+obj-$(CONFIG_SPARC64)   += visemul.o
+obj-$(CONFIG_SPARC64)   += hvapi.o
+obj-$(CONFIG_SPARC64)   += sstate.o
+obj-$(CONFIG_SPARC64)   += mdesc.o
+
+# sparc32 do not use GENERIC_HARDIRQS but uses the generic devres implementation
+obj-$(CONFIG_SPARC32)     += devres.o
+devres-y                  := ../../../kernel/irq/devres.o
+
+obj-$(CONFIG_SPARC32)     += dma.o
+
+obj-$(CONFIG_SPARC32_PCI) += pcic.o
+
+obj-$(CONFIG_SMP)         += trampoline_$(BITS).o smp_$(BITS).o
+obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o
+obj-$(CONFIG_SPARC64_SMP) += hvtramp.o
+
+obj-y                     += auxio_$(BITS).o
+obj-$(CONFIG_SUN_PM)      += apc.o pmc.o
+
+obj-$(CONFIG_MODULES)     += module.o
+obj-$(CONFIG_MODULES)     += sparc_ksyms_$(BITS).o
+obj-$(CONFIG_SPARC_LED)   += led.o
+obj-$(CONFIG_KGDB)        += kgdb_$(BITS).o
+
+
+obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
+CFLAGS_REMOVE_ftrace.o := -pg
+
+obj-$(CONFIG_STACKTRACE)     += stacktrace.o
+# sparc64 PCI
+obj-$(CONFIG_SPARC64_PCI)    += pci.o pci_common.o psycho_common.o
+obj-$(CONFIG_SPARC64_PCI)    += pci_psycho.o pci_sabre.o pci_schizo.o
+obj-$(CONFIG_SPARC64_PCI)    += pci_sun4v.o pci_sun4v_asm.o pci_fire.o
+obj-$(CONFIG_PCI_MSI)        += pci_msi.o
+
+obj-$(CONFIG_COMPAT)         += sys32.o sys_sparc32.o signal32.o
+
+# sparc64 cpufreq
+obj-$(CONFIG_US3_FREQ)  += us3_cpufreq.o
+obj-$(CONFIG_US2E_FREQ) += us2e_cpufreq.o
+obj-$(CONFIG_US3_MC)    += chmc.o
+
+obj-$(CONFIG_KPROBES)   += kprobes.o
+obj-$(CONFIG_SUN_LDOMS) += ldc.o vio.o viohs.o ds.o
+
+obj-$(CONFIG_AUDIT)     += audit.o
+audit--$(CONFIG_AUDIT)  := compat_audit.o
+obj-$(CONFIG_COMPAT)    += $(audit--y)
diff --git a/arch/sparc/kernel/asm-offsets.c b/arch/sparc/kernel/asm-offsets.c
index b5bb99ed892c..68f7e1118e9b 100644
--- a/arch/sparc/kernel/asm-offsets.c
+++ b/arch/sparc/kernel/asm-offsets.c
@@ -14,15 +14,28 @@
 // #include <linux/mm.h>
 #include <linux/kbuild.h>
 
-int foo(void)
+#ifdef CONFIG_SPARC32
+int sparc32_foo(void)
 {
-	DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
-	BLANK();
 	DEFINE(AOFF_thread_fork_kpsr,
 			offsetof(struct thread_struct, fork_kpsr));
+	return 0;
+}
+#else
+int sparc64_foo(void)
+{
+	return 0;
+}
+#endif
+
+int foo(void)
+{
+	BLANK();
+	DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
 	BLANK();
 	DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
 
 	/* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
 	return 0;
 }
+
diff --git a/arch/sparc/kernel/audit.c b/arch/sparc/kernel/audit.c
new file mode 100644
index 000000000000..8fff0ac63d56
--- /dev/null
+++ b/arch/sparc/kernel/audit.c
@@ -0,0 +1,83 @@
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/audit.h>
+#include <asm/unistd.h>
+
+static unsigned dir_class[] = {
+#include <asm-generic/audit_dir_write.h>
+~0U
+};
+
+static unsigned read_class[] = {
+#include <asm-generic/audit_read.h>
+~0U
+};
+
+static unsigned write_class[] = {
+#include <asm-generic/audit_write.h>
+~0U
+};
+
+static unsigned chattr_class[] = {
+#include <asm-generic/audit_change_attr.h>
+~0U
+};
+
+static unsigned signal_class[] = {
+#include <asm-generic/audit_signal.h>
+~0U
+};
+
+int audit_classify_arch(int arch)
+{
+#ifdef CONFIG_COMPAT
+	if (arch == AUDIT_ARCH_SPARC)
+		return 1;
+#endif
+	return 0;
+}
+
+int audit_classify_syscall(int abi, unsigned syscall)
+{
+#ifdef CONFIG_COMPAT
+	extern int sparc32_classify_syscall(unsigned);
+	if (abi == AUDIT_ARCH_SPARC)
+		return sparc32_classify_syscall(syscall);
+#endif
+	switch(syscall) {
+	case __NR_open:
+		return 2;
+	case __NR_openat:
+		return 3;
+	case __NR_socketcall:
+		return 4;
+	case __NR_execve:
+		return 5;
+	default:
+		return 0;
+	}
+}
+
+static int __init audit_classes_init(void)
+{
+#ifdef CONFIG_COMPAT
+	extern __u32 sparc32_dir_class[];
+	extern __u32 sparc32_write_class[];
+	extern __u32 sparc32_read_class[];
+	extern __u32 sparc32_chattr_class[];
+	extern __u32 sparc32_signal_class[];
+	audit_register_class(AUDIT_CLASS_WRITE_32, sparc32_write_class);
+	audit_register_class(AUDIT_CLASS_READ_32, sparc32_read_class);
+	audit_register_class(AUDIT_CLASS_DIR_WRITE_32, sparc32_dir_class);
+	audit_register_class(AUDIT_CLASS_CHATTR_32, sparc32_chattr_class);
+	audit_register_class(AUDIT_CLASS_SIGNAL_32, sparc32_signal_class);
+#endif
+	audit_register_class(AUDIT_CLASS_WRITE, write_class);
+	audit_register_class(AUDIT_CLASS_READ, read_class);
+	audit_register_class(AUDIT_CLASS_DIR_WRITE, dir_class);
+	audit_register_class(AUDIT_CLASS_CHATTR, chattr_class);
+	audit_register_class(AUDIT_CLASS_SIGNAL, signal_class);
+	return 0;
+}
+
+__initcall(audit_classes_init);
diff --git a/arch/sparc/kernel/auxio.c b/arch/sparc/kernel/auxio_32.c
index 09c857215a52..09c857215a52 100644
--- a/arch/sparc/kernel/auxio.c
+++ b/arch/sparc/kernel/auxio_32.c
diff --git a/arch/sparc/kernel/auxio_64.c b/arch/sparc/kernel/auxio_64.c
new file mode 100644
index 000000000000..8b67347d4221
--- /dev/null
+++ b/arch/sparc/kernel/auxio_64.c
@@ -0,0 +1,149 @@
+/* auxio.c: Probing for the Sparc AUXIO register at boot time.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * Refactoring for unified NCR/PCIO support 2002 Eric Brower (ebrower@usa.net)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/of_device.h>
+
+#include <asm/prom.h>
+#include <asm/io.h>
+#include <asm/auxio.h>
+
+void __iomem *auxio_register = NULL;
+EXPORT_SYMBOL(auxio_register);
+
+enum auxio_type {
+	AUXIO_TYPE_NODEV,
+	AUXIO_TYPE_SBUS,
+	AUXIO_TYPE_EBUS
+};
+
+static enum auxio_type auxio_devtype = AUXIO_TYPE_NODEV;
+static DEFINE_SPINLOCK(auxio_lock);
+
+static void __auxio_rmw(u8 bits_on, u8 bits_off, int ebus)
+{
+	if (auxio_register) {
+		unsigned long flags;
+		u8 regval, newval;
+
+		spin_lock_irqsave(&auxio_lock, flags);
+
+		regval = (ebus ?
+			  (u8) readl(auxio_register) :
+			  sbus_readb(auxio_register));
+		newval =  regval | bits_on;
+		newval &= ~bits_off;
+		if (!ebus)
+			newval &= ~AUXIO_AUX1_MASK;
+		if (ebus)
+			writel((u32) newval, auxio_register);
+		else
+			sbus_writeb(newval, auxio_register);
+		
+		spin_unlock_irqrestore(&auxio_lock, flags);
+	}
+}
+
+static void __auxio_set_bit(u8 bit, int on, int ebus)
+{
+	u8 bits_on = (ebus ? AUXIO_PCIO_LED : AUXIO_AUX1_LED);
+	u8 bits_off = 0;
+
+	if (!on) {
+		u8 tmp = bits_off;
+		bits_off = bits_on;
+		bits_on = tmp;
+	}
+	__auxio_rmw(bits_on, bits_off, ebus);
+}
+
+void auxio_set_led(int on)
+{
+	int ebus = auxio_devtype == AUXIO_TYPE_EBUS;
+	u8 bit;
+
+	bit = (ebus ? AUXIO_PCIO_LED : AUXIO_AUX1_LED);
+	__auxio_set_bit(bit, on, ebus);
+}
+
+static void __auxio_sbus_set_lte(int on)
+{
+	__auxio_set_bit(AUXIO_AUX1_LTE, on, 0);
+}
+
+void auxio_set_lte(int on)
+{
+	switch(auxio_devtype) {
+	case AUXIO_TYPE_SBUS:
+		__auxio_sbus_set_lte(on);
+		break;
+	case AUXIO_TYPE_EBUS:
+		/* FALL-THROUGH */
+	default:
+		break;
+	}
+}
+
+static struct of_device_id __initdata auxio_match[] = {
+	{
+		.name = "auxio",
+	},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, auxio_match);
+
+static int __devinit auxio_probe(struct of_device *dev, const struct of_device_id *match)
+{
+	struct device_node *dp = dev->node;
+	unsigned long size;
+
+	if (!strcmp(dp->parent->name, "ebus")) {
+		auxio_devtype = AUXIO_TYPE_EBUS;
+		size = sizeof(u32);
+	} else if (!strcmp(dp->parent->name, "sbus")) {
+		auxio_devtype = AUXIO_TYPE_SBUS;
+		size = 1;
+	} else {
+		printk("auxio: Unknown parent bus type [%s]\n",
+		       dp->parent->name);
+		return -ENODEV;
+	}
+	auxio_register = of_ioremap(&dev->resource[0], 0, size, "auxio");
+	if (!auxio_register)
+		return -ENODEV;
+
+	printk(KERN_INFO "AUXIO: Found device at %s\n",
+	       dp->full_name);
+
+	if (auxio_devtype == AUXIO_TYPE_EBUS)
+		auxio_set_led(AUXIO_LED_ON);
+
+	return 0;
+}
+
+static struct of_platform_driver auxio_driver = {
+	.match_table	= auxio_match,
+	.probe		= auxio_probe,
+	.driver		= {
+		.name	= "auxio",
+	},
+};
+
+static int __init auxio_init(void)
+{
+	return of_register_driver(&auxio_driver, &of_platform_bus_type);
+}
+
+/* Must be after subsys_initcall() so that busses are probed.  Must
+ * be before device_initcall() because things like the floppy driver
+ * need to use the AUXIO register.
+ */
+fs_initcall(auxio_init);
diff --git a/arch/sparc/kernel/central.c b/arch/sparc/kernel/central.c
new file mode 100644
index 000000000000..05f1c916db06
--- /dev/null
+++ b/arch/sparc/kernel/central.c
@@ -0,0 +1,268 @@
+/* central.c: Central FHC driver for Sunfire/Starfire/Wildfire.
+ *
+ * Copyright (C) 1997, 1999, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include <asm/fhc.h>
+#include <asm/upa.h>
+
+struct clock_board {
+	void __iomem		*clock_freq_regs;
+	void __iomem		*clock_regs;
+	void __iomem		*clock_ver_reg;
+	int			num_slots;
+	struct resource		leds_resource;
+	struct platform_device	leds_pdev;
+};
+
+struct fhc {
+	void __iomem		*pregs;
+	bool			central;
+	bool			jtag_master;
+	int			board_num;
+	struct resource		leds_resource;
+	struct platform_device	leds_pdev;
+};
+
+static int __devinit clock_board_calc_nslots(struct clock_board *p)
+{
+	u8 reg = upa_readb(p->clock_regs + CLOCK_STAT1) & 0xc0;
+
+	switch (reg) {
+	case 0x40:
+		return 16;
+
+	case 0xc0:
+		return 8;
+
+	case 0x80:
+		reg = 0;
+		if (p->clock_ver_reg)
+			reg = upa_readb(p->clock_ver_reg);
+		if (reg) {
+			if (reg & 0x80)
+				return 4;
+			else
+				return 5;
+		}
+		/* Fallthrough */
+	default:
+		return 4;
+	}
+}
+
+static int __devinit clock_board_probe(struct of_device *op,
+				       const struct of_device_id *match)
+{
+	struct clock_board *p = kzalloc(sizeof(*p), GFP_KERNEL);
+	int err = -ENOMEM;
+
+	if (!p) {
+		printk(KERN_ERR "clock_board: Cannot allocate struct clock_board\n");
+		goto out;
+	}
+
+	p->clock_freq_regs = of_ioremap(&op->resource[0], 0,
+					resource_size(&op->resource[0]),
+					"clock_board_freq");
+	if (!p->clock_freq_regs) {
+		printk(KERN_ERR "clock_board: Cannot map clock_freq_regs\n");
+		goto out_free;
+	}
+
+	p->clock_regs = of_ioremap(&op->resource[1], 0,
+				   resource_size(&op->resource[1]),
+				   "clock_board_regs");
+	if (!p->clock_regs) {
+		printk(KERN_ERR "clock_board: Cannot map clock_regs\n");
+		goto out_unmap_clock_freq_regs;
+	}
+
+	if (op->resource[2].flags) {
+		p->clock_ver_reg = of_ioremap(&op->resource[2], 0,
+					      resource_size(&op->resource[2]),
+					      "clock_ver_reg");
+		if (!p->clock_ver_reg) {
+			printk(KERN_ERR "clock_board: Cannot map clock_ver_reg\n");
+			goto out_unmap_clock_regs;
+		}
+	}
+
+	p->num_slots = clock_board_calc_nslots(p);
+
+	p->leds_resource.start = (unsigned long)
+		(p->clock_regs + CLOCK_CTRL);
+	p->leds_resource.end = p->leds_resource.end;
+	p->leds_resource.name = "leds";
+
+	p->leds_pdev.name = "sunfire-clockboard-leds";
+	p->leds_pdev.resource = &p->leds_resource;
+	p->leds_pdev.num_resources = 1;
+	p->leds_pdev.dev.parent = &op->dev;
+
+	err = platform_device_register(&p->leds_pdev);
+	if (err) {
+		printk(KERN_ERR "clock_board: Could not register LEDS "
+		       "platform device\n");
+		goto out_unmap_clock_ver_reg;
+	}
+
+	printk(KERN_INFO "clock_board: Detected %d slot Enterprise system.\n",
+	       p->num_slots);
+
+	err = 0;
+out:
+	return err;
+
+out_unmap_clock_ver_reg:
+	if (p->clock_ver_reg)
+		of_iounmap(&op->resource[2], p->clock_ver_reg,
+			   resource_size(&op->resource[2]));
+
+out_unmap_clock_regs:
+	of_iounmap(&op->resource[1], p->clock_regs,
+		   resource_size(&op->resource[1]));
+
+out_unmap_clock_freq_regs:
+	of_iounmap(&op->resource[0], p->clock_freq_regs,
+		   resource_size(&op->resource[0]));
+
+out_free:
+	kfree(p);
+	goto out;
+}
+
+static struct of_device_id __initdata clock_board_match[] = {
+	{
+		.name = "clock-board",
+	},
+	{},
+};
+
+static struct of_platform_driver clock_board_driver = {
+	.match_table	= clock_board_match,
+	.probe		= clock_board_probe,
+	.driver		= {
+		.name	= "clock_board",
+	},
+};
+
+static int __devinit fhc_probe(struct of_device *op,
+			       const struct of_device_id *match)
+{
+	struct fhc *p = kzalloc(sizeof(*p), GFP_KERNEL);
+	int err = -ENOMEM;
+	u32 reg;
+
+	if (!p) {
+		printk(KERN_ERR "fhc: Cannot allocate struct fhc\n");
+		goto out;
+	}
+
+	if (!strcmp(op->node->parent->name, "central"))
+		p->central = true;
+
+	p->pregs = of_ioremap(&op->resource[0], 0,
+			      resource_size(&op->resource[0]),
+			      "fhc_pregs");
+	if (!p->pregs) {
+		printk(KERN_ERR "fhc: Cannot map pregs\n");
+		goto out_free;
+	}
+
+	if (p->central) {
+		reg = upa_readl(p->pregs + FHC_PREGS_BSR);
+		p->board_num = ((reg >> 16) & 1) | ((reg >> 12) & 0x0e);
+	} else {
+		p->board_num = of_getintprop_default(op->node, "board#", -1);
+		if (p->board_num == -1) {
+			printk(KERN_ERR "fhc: No board# property\n");
+			goto out_unmap_pregs;
+		}
+		if (upa_readl(p->pregs + FHC_PREGS_JCTRL) & FHC_JTAG_CTRL_MENAB)
+			p->jtag_master = true;
+	}
+
+	if (!p->central) {
+		p->leds_resource.start = (unsigned long)
+			(p->pregs + FHC_PREGS_CTRL);
+		p->leds_resource.end = p->leds_resource.end;
+		p->leds_resource.name = "leds";
+
+		p->leds_pdev.name = "sunfire-fhc-leds";
+		p->leds_pdev.resource = &p->leds_resource;
+		p->leds_pdev.num_resources = 1;
+		p->leds_pdev.dev.parent = &op->dev;
+
+		err = platform_device_register(&p->leds_pdev);
+		if (err) {
+			printk(KERN_ERR "fhc: Could not register LEDS "
+			       "platform device\n");
+			goto out_unmap_pregs;
+		}
+	}
+	reg = upa_readl(p->pregs + FHC_PREGS_CTRL);
+
+	if (!p->central)
+		reg |= FHC_CONTROL_IXIST;
+
+	reg &= ~(FHC_CONTROL_AOFF |
+		 FHC_CONTROL_BOFF |
+		 FHC_CONTROL_SLINE);
+
+	upa_writel(reg, p->pregs + FHC_PREGS_CTRL);
+	upa_readl(p->pregs + FHC_PREGS_CTRL);
+
+	reg = upa_readl(p->pregs + FHC_PREGS_ID);
+	printk(KERN_INFO "fhc: Board #%d, Version[%x] PartID[%x] Manuf[%x] %s\n",
+	       p->board_num,
+	       (reg & FHC_ID_VERS) >> 28,
+	       (reg & FHC_ID_PARTID) >> 12,
+	       (reg & FHC_ID_MANUF) >> 1,
+	       (p->jtag_master ?
+		"(JTAG Master)" :
+		(p->central ? "(Central)" : "")));
+
+	err = 0;
+
+out:
+	return err;
+
+out_unmap_pregs:
+	of_iounmap(&op->resource[0], p->pregs, resource_size(&op->resource[0]));
+
+out_free:
+	kfree(p);
+	goto out;
+}
+
+static struct of_device_id __initdata fhc_match[] = {
+	{
+		.name = "fhc",
+	},
+	{},
+};
+
+static struct of_platform_driver fhc_driver = {
+	.match_table	= fhc_match,
+	.probe		= fhc_probe,
+	.driver		= {
+		.name	= "fhc",
+	},
+};
+
+static int __init sunfire_init(void)
+{
+	(void) of_register_driver(&fhc_driver, &of_platform_bus_type);
+	(void) of_register_driver(&clock_board_driver, &of_platform_bus_type);
+	return 0;
+}
+
+subsys_initcall(sunfire_init);
diff --git a/arch/sparc/kernel/cherrs.S b/arch/sparc/kernel/cherrs.S
new file mode 100644
index 000000000000..4ee1ad420862
--- /dev/null
+++ b/arch/sparc/kernel/cherrs.S
@@ -0,0 +1,579 @@
+	/* These get patched into the trap table at boot time
+	 * once we know we have a cheetah processor.
+	 */
+	.globl		cheetah_fecc_trap_vector
+	.type		cheetah_fecc_trap_vector,#function
+cheetah_fecc_trap_vector:
+	membar		#Sync
+	ldxa		[%g0] ASI_DCU_CONTROL_REG, %g1
+	andn		%g1, DCU_DC | DCU_IC, %g1
+	stxa		%g1, [%g0] ASI_DCU_CONTROL_REG
+	membar		#Sync
+	sethi		%hi(cheetah_fast_ecc), %g2
+	jmpl		%g2 + %lo(cheetah_fast_ecc), %g0
+	 mov		0, %g1
+	.size		cheetah_fecc_trap_vector,.-cheetah_fecc_trap_vector
+
+	.globl		cheetah_fecc_trap_vector_tl1
+	.type		cheetah_fecc_trap_vector_tl1,#function
+cheetah_fecc_trap_vector_tl1:
+	membar		#Sync
+	ldxa		[%g0] ASI_DCU_CONTROL_REG, %g1
+	andn		%g1, DCU_DC | DCU_IC, %g1
+	stxa		%g1, [%g0] ASI_DCU_CONTROL_REG
+	membar		#Sync
+	sethi		%hi(cheetah_fast_ecc), %g2
+	jmpl		%g2 + %lo(cheetah_fast_ecc), %g0
+	 mov		1, %g1
+	.size		cheetah_fecc_trap_vector_tl1,.-cheetah_fecc_trap_vector_tl1
+
+	.globl	cheetah_cee_trap_vector
+	.type	cheetah_cee_trap_vector,#function
+cheetah_cee_trap_vector:
+	membar		#Sync
+	ldxa		[%g0] ASI_DCU_CONTROL_REG, %g1
+	andn		%g1, DCU_IC, %g1
+	stxa		%g1, [%g0] ASI_DCU_CONTROL_REG
+	membar		#Sync
+	sethi		%hi(cheetah_cee), %g2
+	jmpl		%g2 + %lo(cheetah_cee), %g0
+	 mov		0, %g1
+	.size		cheetah_cee_trap_vector,.-cheetah_cee_trap_vector
+
+	.globl		cheetah_cee_trap_vector_tl1
+	.type		cheetah_cee_trap_vector_tl1,#function
+cheetah_cee_trap_vector_tl1:
+	membar		#Sync
+	ldxa		[%g0] ASI_DCU_CONTROL_REG, %g1
+	andn		%g1, DCU_IC, %g1
+	stxa		%g1, [%g0] ASI_DCU_CONTROL_REG
+	membar		#Sync
+	sethi		%hi(cheetah_cee), %g2
+	jmpl		%g2 + %lo(cheetah_cee), %g0
+	 mov		1, %g1
+	.size		cheetah_cee_trap_vector_tl1,.-cheetah_cee_trap_vector_tl1
+
+	.globl	cheetah_deferred_trap_vector
+	.type	cheetah_deferred_trap_vector,#function
+cheetah_deferred_trap_vector:
+	membar		#Sync
+	ldxa		[%g0] ASI_DCU_CONTROL_REG, %g1;
+	andn		%g1, DCU_DC | DCU_IC, %g1;
+	stxa		%g1, [%g0] ASI_DCU_CONTROL_REG;
+	membar		#Sync;
+	sethi		%hi(cheetah_deferred_trap), %g2
+	jmpl		%g2 + %lo(cheetah_deferred_trap), %g0
+	 mov		0, %g1
+	.size		cheetah_deferred_trap_vector,.-cheetah_deferred_trap_vector
+
+	.globl		cheetah_deferred_trap_vector_tl1
+	.type		cheetah_deferred_trap_vector_tl1,#function
+cheetah_deferred_trap_vector_tl1:
+	membar		#Sync;
+	ldxa		[%g0] ASI_DCU_CONTROL_REG, %g1;
+	andn		%g1, DCU_DC | DCU_IC, %g1;
+	stxa		%g1, [%g0] ASI_DCU_CONTROL_REG;
+	membar		#Sync;
+	sethi		%hi(cheetah_deferred_trap), %g2
+	jmpl		%g2 + %lo(cheetah_deferred_trap), %g0
+	 mov		1, %g1
+	.size		cheetah_deferred_trap_vector_tl1,.-cheetah_deferred_trap_vector_tl1
+
+	/* Cheetah+ specific traps. These are for the new I/D cache parity
+	 * error traps.  The first argument to cheetah_plus_parity_handler
+	 * is encoded as follows:
+	 *
+	 * Bit0:	0=dcache,1=icache
+	 * Bit1:	0=recoverable,1=unrecoverable
+	 */
+	.globl		cheetah_plus_dcpe_trap_vector
+	.type		cheetah_plus_dcpe_trap_vector,#function
+cheetah_plus_dcpe_trap_vector:
+	membar		#Sync
+	sethi		%hi(do_cheetah_plus_data_parity), %g7
+	jmpl		%g7 + %lo(do_cheetah_plus_data_parity), %g0
+	 nop
+	nop
+	nop
+	nop
+	nop
+	.size		cheetah_plus_dcpe_trap_vector,.-cheetah_plus_dcpe_trap_vector
+
+	.type		do_cheetah_plus_data_parity,#function
+do_cheetah_plus_data_parity:
+	rdpr		%pil, %g2
+	wrpr		%g0, PIL_NORMAL_MAX, %pil
+	ba,pt		%xcc, etrap_irq
+	 rd		%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	mov		0x0, %o0
+	call		cheetah_plus_parity_error
+	 add		%sp, PTREGS_OFF, %o1
+	ba,a,pt		%xcc, rtrap_irq
+	.size		do_cheetah_plus_data_parity,.-do_cheetah_plus_data_parity
+
+	.globl		cheetah_plus_dcpe_trap_vector_tl1
+	.type		cheetah_plus_dcpe_trap_vector_tl1,#function
+cheetah_plus_dcpe_trap_vector_tl1:
+	membar		#Sync
+	wrpr		PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
+	sethi		%hi(do_dcpe_tl1), %g3
+	jmpl		%g3 + %lo(do_dcpe_tl1), %g0
+	 nop
+	nop
+	nop
+	nop
+	.size		cheetah_plus_dcpe_trap_vector_tl1,.-cheetah_plus_dcpe_trap_vector_tl1
+
+	.globl		cheetah_plus_icpe_trap_vector
+	.type		cheetah_plus_icpe_trap_vector,#function
+cheetah_plus_icpe_trap_vector:
+	membar		#Sync
+	sethi		%hi(do_cheetah_plus_insn_parity), %g7
+	jmpl		%g7 + %lo(do_cheetah_plus_insn_parity), %g0
+	 nop
+	nop
+	nop
+	nop
+	nop
+	.size		cheetah_plus_icpe_trap_vector,.-cheetah_plus_icpe_trap_vector
+
+	.type		do_cheetah_plus_insn_parity,#function
+do_cheetah_plus_insn_parity:
+	rdpr		%pil, %g2
+	wrpr		%g0, PIL_NORMAL_MAX, %pil
+	ba,pt		%xcc, etrap_irq
+	 rd		%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	mov		0x1, %o0
+	call		cheetah_plus_parity_error
+	 add		%sp, PTREGS_OFF, %o1
+	ba,a,pt		%xcc, rtrap_irq
+	.size		do_cheetah_plus_insn_parity,.-do_cheetah_plus_insn_parity
+
+	.globl		cheetah_plus_icpe_trap_vector_tl1
+	.type		cheetah_plus_icpe_trap_vector_tl1,#function
+cheetah_plus_icpe_trap_vector_tl1:
+	membar		#Sync
+	wrpr		PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
+	sethi		%hi(do_icpe_tl1), %g3
+	jmpl		%g3 + %lo(do_icpe_tl1), %g0
+	 nop
+	nop
+	nop
+	nop
+	.size		cheetah_plus_icpe_trap_vector_tl1,.-cheetah_plus_icpe_trap_vector_tl1
+
+	/* If we take one of these traps when tl >= 1, then we
+	 * jump to interrupt globals.  If some trap level above us
+	 * was also using interrupt globals, we cannot recover.
+	 * We may use all interrupt global registers except %g6.
+	 */
+	.globl		do_dcpe_tl1
+	.type		do_dcpe_tl1,#function
+do_dcpe_tl1:
+	rdpr		%tl, %g1		! Save original trap level
+	mov		1, %g2			! Setup TSTATE checking loop
+	sethi		%hi(TSTATE_IG), %g3	! TSTATE mask bit
+1:	wrpr		%g2, %tl		! Set trap level to check
+	rdpr		%tstate, %g4		! Read TSTATE for this level
+	andcc		%g4, %g3, %g0		! Interrupt globals in use?
+	bne,a,pn	%xcc, do_dcpe_tl1_fatal	! Yep, irrecoverable
+	 wrpr		%g1, %tl		! Restore original trap level
+	add		%g2, 1, %g2		! Next trap level
+	cmp		%g2, %g1		! Hit them all yet?
+	ble,pt		%icc, 1b		! Not yet
+	 nop
+	wrpr		%g1, %tl		! Restore original trap level
+do_dcpe_tl1_nonfatal:	/* Ok we may use interrupt globals safely. */
+	sethi		%hi(dcache_parity_tl1_occurred), %g2
+	lduw		[%g2 + %lo(dcache_parity_tl1_occurred)], %g1
+	add		%g1, 1, %g1
+	stw		%g1, [%g2 + %lo(dcache_parity_tl1_occurred)]
+	/* Reset D-cache parity */
+	sethi		%hi(1 << 16), %g1	! D-cache size
+	mov		(1 << 5), %g2		! D-cache line size
+	sub		%g1, %g2, %g1		! Move down 1 cacheline
+1:	srl		%g1, 14, %g3		! Compute UTAG
+	membar		#Sync
+	stxa		%g3, [%g1] ASI_DCACHE_UTAG
+	membar		#Sync
+	sub		%g2, 8, %g3		! 64-bit data word within line
+2:	membar		#Sync
+	stxa		%g0, [%g1 + %g3] ASI_DCACHE_DATA
+	membar		#Sync
+	subcc		%g3, 8, %g3		! Next 64-bit data word
+	bge,pt		%icc, 2b
+	 nop
+	subcc		%g1, %g2, %g1		! Next cacheline
+	bge,pt		%icc, 1b
+	 nop
+	ba,pt		%xcc, dcpe_icpe_tl1_common
+	 nop
+
+do_dcpe_tl1_fatal:
+	sethi		%hi(1f), %g7
+	ba,pt		%xcc, etraptl1
+1:	or		%g7, %lo(1b), %g7
+	mov		0x2, %o0
+	call		cheetah_plus_parity_error
+	 add		%sp, PTREGS_OFF, %o1
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		do_dcpe_tl1,.-do_dcpe_tl1
+
+	.globl		do_icpe_tl1
+	.type		do_icpe_tl1,#function
+do_icpe_tl1:
+	rdpr		%tl, %g1		! Save original trap level
+	mov		1, %g2			! Setup TSTATE checking loop
+	sethi		%hi(TSTATE_IG), %g3	! TSTATE mask bit
+1:	wrpr		%g2, %tl		! Set trap level to check
+	rdpr		%tstate, %g4		! Read TSTATE for this level
+	andcc		%g4, %g3, %g0		! Interrupt globals in use?
+	bne,a,pn	%xcc, do_icpe_tl1_fatal	! Yep, irrecoverable
+	 wrpr		%g1, %tl		! Restore original trap level
+	add		%g2, 1, %g2		! Next trap level
+	cmp		%g2, %g1		! Hit them all yet?
+	ble,pt		%icc, 1b		! Not yet
+	 nop
+	wrpr		%g1, %tl		! Restore original trap level
+do_icpe_tl1_nonfatal:	/* Ok we may use interrupt globals safely. */
+	sethi		%hi(icache_parity_tl1_occurred), %g2
+	lduw		[%g2 + %lo(icache_parity_tl1_occurred)], %g1
+	add		%g1, 1, %g1
+	stw		%g1, [%g2 + %lo(icache_parity_tl1_occurred)]
+	/* Flush I-cache */
+	sethi		%hi(1 << 15), %g1	! I-cache size
+	mov		(1 << 5), %g2		! I-cache line size
+	sub		%g1, %g2, %g1
+1:	or		%g1, (2 << 3), %g3
+	stxa		%g0, [%g3] ASI_IC_TAG
+	membar		#Sync
+	subcc		%g1, %g2, %g1
+	bge,pt		%icc, 1b
+	 nop
+	ba,pt		%xcc, dcpe_icpe_tl1_common
+	 nop
+
+do_icpe_tl1_fatal:
+	sethi		%hi(1f), %g7
+	ba,pt		%xcc, etraptl1
+1:	or		%g7, %lo(1b), %g7
+	mov		0x3, %o0
+	call		cheetah_plus_parity_error
+	 add		%sp, PTREGS_OFF, %o1
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		do_icpe_tl1,.-do_icpe_tl1
+	
+	.type		dcpe_icpe_tl1_common,#function
+dcpe_icpe_tl1_common:
+	/* Flush D-cache, re-enable D/I caches in DCU and finally
+	 * retry the trapping instruction.
+	 */
+	sethi		%hi(1 << 16), %g1	! D-cache size
+	mov		(1 << 5), %g2		! D-cache line size
+	sub		%g1, %g2, %g1
+1:	stxa		%g0, [%g1] ASI_DCACHE_TAG
+	membar		#Sync
+	subcc		%g1, %g2, %g1
+	bge,pt		%icc, 1b
+	 nop
+	ldxa		[%g0] ASI_DCU_CONTROL_REG, %g1
+	or		%g1, (DCU_DC | DCU_IC), %g1
+	stxa		%g1, [%g0] ASI_DCU_CONTROL_REG
+	membar		#Sync
+	retry
+	.size		dcpe_icpe_tl1_common,.-dcpe_icpe_tl1_common
+
+	/* Capture I/D/E-cache state into per-cpu error scoreboard.
+	 *
+	 * %g1:		(TL>=0) ? 1 : 0
+	 * %g2:		scratch
+	 * %g3:		scratch
+	 * %g4:		AFSR
+	 * %g5:		AFAR
+	 * %g6:		unused, will have current thread ptr after etrap
+	 * %g7:		scratch
+	 */
+	.type		__cheetah_log_error,#function
+__cheetah_log_error:
+	/* Put "TL1" software bit into AFSR. */
+	and		%g1, 0x1, %g1
+	sllx		%g1, 63, %g2
+	or		%g4, %g2, %g4
+
+	/* Get log entry pointer for this cpu at this trap level. */
+	BRANCH_IF_JALAPENO(g2,g3,50f)
+	ldxa		[%g0] ASI_SAFARI_CONFIG, %g2
+	srlx		%g2, 17, %g2
+	ba,pt		%xcc, 60f
+	 and		%g2, 0x3ff, %g2
+
+50:	ldxa		[%g0] ASI_JBUS_CONFIG, %g2
+	srlx		%g2, 17, %g2
+	and		%g2, 0x1f, %g2
+
+60:	sllx		%g2, 9, %g2
+	sethi		%hi(cheetah_error_log), %g3
+	ldx		[%g3 + %lo(cheetah_error_log)], %g3
+	brz,pn		%g3, 80f
+	 nop
+
+	add		%g3, %g2, %g3
+	sllx		%g1, 8, %g1
+	add		%g3, %g1, %g1
+
+	/* %g1 holds pointer to the top of the logging scoreboard */
+	ldx		[%g1 + 0x0], %g7
+	cmp		%g7, -1
+	bne,pn		%xcc, 80f
+	 nop
+
+	stx		%g4, [%g1 + 0x0]
+	stx		%g5, [%g1 + 0x8]
+	add		%g1, 0x10, %g1
+
+	/* %g1 now points to D-cache logging area */
+	set		0x3ff8, %g2	/* DC_addr mask		*/
+	and		%g5, %g2, %g2	/* DC_addr bits of AFAR	*/
+	srlx		%g5, 12, %g3
+	or		%g3, 1, %g3	/* PHYS tag + valid	*/
+
+10:	ldxa		[%g2] ASI_DCACHE_TAG, %g7
+	cmp		%g3, %g7	/* TAG match?		*/
+	bne,pt		%xcc, 13f
+	 nop
+
+	/* Yep, what we want, capture state. */
+	stx		%g2, [%g1 + 0x20]
+	stx		%g7, [%g1 + 0x28]
+
+	/* A membar Sync is required before and after utag access. */
+	membar		#Sync
+	ldxa		[%g2] ASI_DCACHE_UTAG, %g7
+	membar		#Sync
+	stx		%g7, [%g1 + 0x30]
+	ldxa		[%g2] ASI_DCACHE_SNOOP_TAG, %g7
+	stx		%g7, [%g1 + 0x38]
+	clr		%g3
+
+12:	ldxa		[%g2 + %g3] ASI_DCACHE_DATA, %g7
+	stx		%g7, [%g1]
+	add		%g3, (1 << 5), %g3
+	cmp		%g3, (4 << 5)
+	bl,pt		%xcc, 12b
+	 add		%g1, 0x8, %g1
+
+	ba,pt		%xcc, 20f
+	 add		%g1, 0x20, %g1
+
+13:	sethi		%hi(1 << 14), %g7
+	add		%g2, %g7, %g2
+	srlx		%g2, 14, %g7
+	cmp		%g7, 4
+	bl,pt		%xcc, 10b
+	 nop
+
+	add		%g1, 0x40, %g1
+
+	/* %g1 now points to I-cache logging area */
+20:	set		0x1fe0, %g2	/* IC_addr mask		*/
+	and		%g5, %g2, %g2	/* IC_addr bits of AFAR	*/
+	sllx		%g2, 1, %g2	/* IC_addr[13:6]==VA[12:5] */
+	srlx		%g5, (13 - 8), %g3 /* Make PTAG */
+	andn		%g3, 0xff, %g3	/* Mask off undefined bits */
+
+21:	ldxa		[%g2] ASI_IC_TAG, %g7
+	andn		%g7, 0xff, %g7
+	cmp		%g3, %g7
+	bne,pt		%xcc, 23f
+	 nop
+
+	/* Yep, what we want, capture state. */
+	stx		%g2, [%g1 + 0x40]
+	stx		%g7, [%g1 + 0x48]
+	add		%g2, (1 << 3), %g2
+	ldxa		[%g2] ASI_IC_TAG, %g7
+	add		%g2, (1 << 3), %g2
+	stx		%g7, [%g1 + 0x50]
+	ldxa		[%g2] ASI_IC_TAG, %g7
+	add		%g2, (1 << 3), %g2
+	stx		%g7, [%g1 + 0x60]
+	ldxa		[%g2] ASI_IC_TAG, %g7
+	stx		%g7, [%g1 + 0x68]
+	sub		%g2, (3 << 3), %g2
+	ldxa		[%g2] ASI_IC_STAG, %g7
+	stx		%g7, [%g1 + 0x58]
+	clr		%g3
+	srlx		%g2, 2, %g2
+
+22:	ldxa		[%g2 + %g3] ASI_IC_INSTR, %g7
+	stx		%g7, [%g1]
+	add		%g3, (1 << 3), %g3
+	cmp		%g3, (8 << 3)
+	bl,pt		%xcc, 22b
+	 add		%g1, 0x8, %g1
+
+	ba,pt		%xcc, 30f
+	 add		%g1, 0x30, %g1
+
+23:	sethi		%hi(1 << 14), %g7
+	add		%g2, %g7, %g2
+	srlx		%g2, 14, %g7
+	cmp		%g7, 4
+	bl,pt		%xcc, 21b
+	 nop
+
+	add		%g1, 0x70, %g1
+
+	/* %g1 now points to E-cache logging area */
+30:	andn		%g5, (32 - 1), %g2
+	stx		%g2, [%g1 + 0x20]
+	ldxa		[%g2] ASI_EC_TAG_DATA, %g7
+	stx		%g7, [%g1 + 0x28]
+	ldxa		[%g2] ASI_EC_R, %g0
+	clr		%g3
+
+31:	ldxa		[%g3] ASI_EC_DATA, %g7
+	stx		%g7, [%g1 + %g3]
+	add		%g3, 0x8, %g3
+	cmp		%g3, 0x20
+
+	bl,pt		%xcc, 31b
+	 nop
+80:
+	rdpr		%tt, %g2
+	cmp		%g2, 0x70
+	be		c_fast_ecc
+	 cmp		%g2, 0x63
+	be		c_cee
+	 nop
+	ba,pt		%xcc, c_deferred
+	.size		__cheetah_log_error,.-__cheetah_log_error
+
+	/* Cheetah FECC trap handling, we get here from tl{0,1}_fecc
+	 * in the trap table.  That code has done a memory barrier
+	 * and has disabled both the I-cache and D-cache in the DCU
+	 * control register.  The I-cache is disabled so that we may
+	 * capture the corrupted cache line, and the D-cache is disabled
+	 * because corrupt data may have been placed there and we don't
+	 * want to reference it.
+	 *
+	 * %g1 is one if this trap occurred at %tl >= 1.
+	 *
+	 * Next, we turn off error reporting so that we don't recurse.
+	 */
+	.globl		cheetah_fast_ecc
+	.type		cheetah_fast_ecc,#function
+cheetah_fast_ecc:
+	ldxa		[%g0] ASI_ESTATE_ERROR_EN, %g2
+	andn		%g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
+	stxa		%g2, [%g0] ASI_ESTATE_ERROR_EN
+	membar		#Sync
+
+	/* Fetch and clear AFSR/AFAR */
+	ldxa		[%g0] ASI_AFSR, %g4
+	ldxa		[%g0] ASI_AFAR, %g5
+	stxa		%g4, [%g0] ASI_AFSR
+	membar		#Sync
+
+	ba,pt		%xcc, __cheetah_log_error
+	 nop
+	.size		cheetah_fast_ecc,.-cheetah_fast_ecc
+
+	.type		c_fast_ecc,#function
+c_fast_ecc:
+	rdpr		%pil, %g2
+	wrpr		%g0, PIL_NORMAL_MAX, %pil
+	ba,pt		%xcc, etrap_irq
+	 rd		%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		cheetah_fecc_handler
+	 add		%sp, PTREGS_OFF, %o0
+	ba,a,pt		%xcc, rtrap_irq
+	.size		c_fast_ecc,.-c_fast_ecc
+
+	/* Our caller has disabled I-cache and performed membar Sync. */
+	.globl		cheetah_cee
+	.type		cheetah_cee,#function
+cheetah_cee:
+	ldxa		[%g0] ASI_ESTATE_ERROR_EN, %g2
+	andn		%g2, ESTATE_ERROR_CEEN, %g2
+	stxa		%g2, [%g0] ASI_ESTATE_ERROR_EN
+	membar		#Sync
+
+	/* Fetch and clear AFSR/AFAR */
+	ldxa		[%g0] ASI_AFSR, %g4
+	ldxa		[%g0] ASI_AFAR, %g5
+	stxa		%g4, [%g0] ASI_AFSR
+	membar		#Sync
+
+	ba,pt		%xcc, __cheetah_log_error
+	 nop
+	.size		cheetah_cee,.-cheetah_cee
+
+	.type		c_cee,#function
+c_cee:
+	rdpr		%pil, %g2
+	wrpr		%g0, PIL_NORMAL_MAX, %pil
+	ba,pt		%xcc, etrap_irq
+	 rd		%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		cheetah_cee_handler
+	 add		%sp, PTREGS_OFF, %o0
+	ba,a,pt		%xcc, rtrap_irq
+	.size		c_cee,.-c_cee
+
+	/* Our caller has disabled I-cache+D-cache and performed membar Sync. */
+	.globl		cheetah_deferred_trap
+	.type		cheetah_deferred_trap,#function
+cheetah_deferred_trap:
+	ldxa		[%g0] ASI_ESTATE_ERROR_EN, %g2
+	andn		%g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
+	stxa		%g2, [%g0] ASI_ESTATE_ERROR_EN
+	membar		#Sync
+
+	/* Fetch and clear AFSR/AFAR */
+	ldxa		[%g0] ASI_AFSR, %g4
+	ldxa		[%g0] ASI_AFAR, %g5
+	stxa		%g4, [%g0] ASI_AFSR
+	membar		#Sync
+
+	ba,pt		%xcc, __cheetah_log_error
+	 nop
+	.size		cheetah_deferred_trap,.-cheetah_deferred_trap
+
+	.type		c_deferred,#function
+c_deferred:
+	rdpr		%pil, %g2
+	wrpr		%g0, PIL_NORMAL_MAX, %pil
+	ba,pt		%xcc, etrap_irq
+	 rd		%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		cheetah_deferred_handler
+	 add		%sp, PTREGS_OFF, %o0
+	ba,a,pt		%xcc, rtrap_irq
+	.size		c_deferred,.-c_deferred
diff --git a/arch/sparc/kernel/chmc.c b/arch/sparc/kernel/chmc.c
new file mode 100644
index 000000000000..3b9f4d6e14a9
--- /dev/null
+++ b/arch/sparc/kernel/chmc.c
@@ -0,0 +1,863 @@
+/* chmc.c: Driver for UltraSPARC-III memory controller.
+ *
+ * Copyright (C) 2001, 2007, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/string.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <asm/spitfire.h>
+#include <asm/chmctrl.h>
+#include <asm/cpudata.h>
+#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/head.h>
+#include <asm/io.h>
+#include <asm/memctrl.h>
+
+#define DRV_MODULE_NAME		"chmc"
+#define PFX DRV_MODULE_NAME	": "
+#define DRV_MODULE_VERSION	"0.2"
+
+MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
+MODULE_DESCRIPTION("UltraSPARC-III memory controller driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+static int mc_type;
+#define MC_TYPE_SAFARI		1
+#define MC_TYPE_JBUS		2
+
+static dimm_printer_t us3mc_dimm_printer;
+
+#define CHMCTRL_NDGRPS	2
+#define CHMCTRL_NDIMMS	4
+
+#define CHMC_DIMMS_PER_MC	(CHMCTRL_NDGRPS * CHMCTRL_NDIMMS)
+
+/* OBP memory-layout property format. */
+struct chmc_obp_map {
+	unsigned char	dimm_map[144];
+	unsigned char	pin_map[576];
+};
+
+#define DIMM_LABEL_SZ	8
+
+struct chmc_obp_mem_layout {
+	/* One max 8-byte string label per DIMM.  Usually
+	 * this matches the label on the motherboard where
+	 * that DIMM resides.
+	 */
+	char			dimm_labels[CHMC_DIMMS_PER_MC][DIMM_LABEL_SZ];
+
+	/* If symmetric use map[0], else it is
+	 * asymmetric and map[1] should be used.
+	 */
+	char			symmetric;
+
+	struct chmc_obp_map	map[2];
+};
+
+#define CHMCTRL_NBANKS	4
+
+struct chmc_bank_info {
+	struct chmc		*p;
+	int			bank_id;
+
+	u64			raw_reg;
+	int			valid;
+	int			uk;
+	int			um;
+	int			lk;
+	int			lm;
+	int			interleave;
+	unsigned long		base;
+	unsigned long		size;
+};
+
+struct chmc {
+	struct list_head		list;
+	int				portid;
+
+	struct chmc_obp_mem_layout	layout_prop;
+	int				layout_size;
+
+	void __iomem			*regs;
+
+	u64				timing_control1;
+	u64				timing_control2;
+	u64				timing_control3;
+	u64				timing_control4;
+	u64				memaddr_control;
+
+	struct chmc_bank_info		logical_banks[CHMCTRL_NBANKS];
+};
+
+#define JBUSMC_REGS_SIZE		8
+
+#define JB_MC_REG1_DIMM2_BANK3		0x8000000000000000UL
+#define JB_MC_REG1_DIMM1_BANK1		0x4000000000000000UL
+#define JB_MC_REG1_DIMM2_BANK2		0x2000000000000000UL
+#define JB_MC_REG1_DIMM1_BANK0		0x1000000000000000UL
+#define JB_MC_REG1_XOR			0x0000010000000000UL
+#define JB_MC_REG1_ADDR_GEN_2		0x000000e000000000UL
+#define JB_MC_REG1_ADDR_GEN_2_SHIFT	37
+#define JB_MC_REG1_ADDR_GEN_1		0x0000001c00000000UL
+#define JB_MC_REG1_ADDR_GEN_1_SHIFT	34
+#define JB_MC_REG1_INTERLEAVE		0x0000000001800000UL
+#define JB_MC_REG1_INTERLEAVE_SHIFT	23
+#define JB_MC_REG1_DIMM2_PTYPE		0x0000000000200000UL
+#define JB_MC_REG1_DIMM2_PTYPE_SHIFT	21
+#define JB_MC_REG1_DIMM1_PTYPE		0x0000000000100000UL
+#define JB_MC_REG1_DIMM1_PTYPE_SHIFT	20
+
+#define PART_TYPE_X8		0
+#define PART_TYPE_X4		1
+
+#define INTERLEAVE_NONE		0
+#define INTERLEAVE_SAME		1
+#define INTERLEAVE_INTERNAL	2
+#define INTERLEAVE_BOTH		3
+
+#define ADDR_GEN_128MB		0
+#define ADDR_GEN_256MB		1
+#define ADDR_GEN_512MB		2
+#define ADDR_GEN_1GB		3
+
+#define JB_NUM_DIMM_GROUPS	2
+#define JB_NUM_DIMMS_PER_GROUP	2
+#define JB_NUM_DIMMS		(JB_NUM_DIMM_GROUPS * JB_NUM_DIMMS_PER_GROUP)
+
+struct jbusmc_obp_map {
+	unsigned char	dimm_map[18];
+	unsigned char	pin_map[144];
+};
+
+struct jbusmc_obp_mem_layout {
+	/* One max 8-byte string label per DIMM.  Usually
+	 * this matches the label on the motherboard where
+	 * that DIMM resides.
+	 */
+	char		dimm_labels[JB_NUM_DIMMS][DIMM_LABEL_SZ];
+
+	/* If symmetric use map[0], else it is
+	 * asymmetric and map[1] should be used.
+	 */
+	char			symmetric;
+
+	struct jbusmc_obp_map	map;
+
+	char			_pad;
+};
+
+struct jbusmc_dimm_group {
+	struct jbusmc			*controller;
+	int				index;
+	u64				base_addr;
+	u64				size;
+};
+
+struct jbusmc {
+	void __iomem			*regs;
+	u64				mc_reg_1;
+	u32				portid;
+	struct jbusmc_obp_mem_layout	layout;
+	int				layout_len;
+	int				num_dimm_groups;
+	struct jbusmc_dimm_group	dimm_groups[JB_NUM_DIMM_GROUPS];
+	struct list_head		list;
+};
+
+static DEFINE_SPINLOCK(mctrl_list_lock);
+static LIST_HEAD(mctrl_list);
+
+static void mc_list_add(struct list_head *list)
+{
+	spin_lock(&mctrl_list_lock);
+	list_add(list, &mctrl_list);
+	spin_unlock(&mctrl_list_lock);
+}
+
+static void mc_list_del(struct list_head *list)
+{
+	spin_lock(&mctrl_list_lock);
+	list_del_init(list);
+	spin_unlock(&mctrl_list_lock);
+}
+
+#define SYNDROME_MIN	-1
+#define SYNDROME_MAX	144
+
+/* Covert syndrome code into the way the bits are positioned
+ * on the bus.
+ */
+static int syndrome_to_qword_code(int syndrome_code)
+{
+	if (syndrome_code < 128)
+		syndrome_code += 16;
+	else if (syndrome_code < 128 + 9)
+		syndrome_code -= (128 - 7);
+	else if (syndrome_code < (128 + 9 + 3))
+		syndrome_code -= (128 + 9 - 4);
+	else
+		syndrome_code -= (128 + 9 + 3);
+	return syndrome_code;
+}
+
+/* All this magic has to do with how a cache line comes over the wire
+ * on Safari and JBUS.  A 64-bit line comes over in 1 or more quadword
+ * cycles, each of which transmit ECC/MTAG info as well as the actual
+ * data.
+ */
+#define L2_LINE_SIZE		64
+#define L2_LINE_ADDR_MSK	(L2_LINE_SIZE - 1)
+#define QW_PER_LINE		4
+#define QW_BYTES		(L2_LINE_SIZE / QW_PER_LINE)
+#define QW_BITS			144
+#define SAFARI_LAST_BIT		(576 - 1)
+#define JBUS_LAST_BIT		(144 - 1)
+
+static void get_pin_and_dimm_str(int syndrome_code, unsigned long paddr,
+				 int *pin_p, char **dimm_str_p, void *_prop,
+				 int base_dimm_offset)
+{
+	int qword_code = syndrome_to_qword_code(syndrome_code);
+	int cache_line_offset;
+	int offset_inverse;
+	int dimm_map_index;
+	int map_val;
+
+	if (mc_type == MC_TYPE_JBUS) {
+		struct jbusmc_obp_mem_layout *p = _prop;
+
+		/* JBUS */
+		cache_line_offset = qword_code;
+		offset_inverse = (JBUS_LAST_BIT - cache_line_offset);
+		dimm_map_index = offset_inverse / 8;
+		map_val = p->map.dimm_map[dimm_map_index];
+		map_val = ((map_val >> ((7 - (offset_inverse & 7)))) & 1);
+		*dimm_str_p = p->dimm_labels[base_dimm_offset + map_val];
+		*pin_p = p->map.pin_map[cache_line_offset];
+	} else {
+		struct chmc_obp_mem_layout *p = _prop;
+		struct chmc_obp_map *mp;
+		int qword;
+
+		/* Safari */
+		if (p->symmetric)
+			mp = &p->map[0];
+		else
+			mp = &p->map[1];
+
+		qword = (paddr & L2_LINE_ADDR_MSK) / QW_BYTES;
+		cache_line_offset = ((3 - qword) * QW_BITS) + qword_code;
+		offset_inverse = (SAFARI_LAST_BIT - cache_line_offset);
+		dimm_map_index = offset_inverse >> 2;
+		map_val = mp->dimm_map[dimm_map_index];
+		map_val = ((map_val >> ((3 - (offset_inverse & 3)) << 1)) & 0x3);
+		*dimm_str_p = p->dimm_labels[base_dimm_offset + map_val];
+		*pin_p = mp->pin_map[cache_line_offset];
+	}
+}
+
+static struct jbusmc_dimm_group *jbusmc_find_dimm_group(unsigned long phys_addr)
+{
+	struct jbusmc *p;
+
+	list_for_each_entry(p, &mctrl_list, list) {
+		int i;
+
+		for (i = 0; i < p->num_dimm_groups; i++) {
+			struct jbusmc_dimm_group *dp = &p->dimm_groups[i];
+
+			if (phys_addr < dp->base_addr ||
+			    (dp->base_addr + dp->size) <= phys_addr)
+				continue;
+
+			return dp;
+		}
+	}
+	return NULL;
+}
+
+static int jbusmc_print_dimm(int syndrome_code,
+			     unsigned long phys_addr,
+			     char *buf, int buflen)
+{
+	struct jbusmc_obp_mem_layout *prop;
+	struct jbusmc_dimm_group *dp;
+	struct jbusmc *p;
+	int first_dimm;
+
+	dp = jbusmc_find_dimm_group(phys_addr);
+	if (dp == NULL ||
+	    syndrome_code < SYNDROME_MIN ||
+	    syndrome_code > SYNDROME_MAX) {
+		buf[0] = '?';
+		buf[1] = '?';
+		buf[2] = '?';
+		buf[3] = '\0';
+	}
+	p = dp->controller;
+	prop = &p->layout;
+
+	first_dimm = dp->index * JB_NUM_DIMMS_PER_GROUP;
+
+	if (syndrome_code != SYNDROME_MIN) {
+		char *dimm_str;
+		int pin;
+
+		get_pin_and_dimm_str(syndrome_code, phys_addr, &pin,
+				     &dimm_str, prop, first_dimm);
+		sprintf(buf, "%s, pin %3d", dimm_str, pin);
+	} else {
+		int dimm;
+
+		/* Multi-bit error, we just dump out all the
+		 * dimm labels associated with this dimm group.
+		 */
+		for (dimm = 0; dimm < JB_NUM_DIMMS_PER_GROUP; dimm++) {
+			sprintf(buf, "%s ",
+				prop->dimm_labels[first_dimm + dimm]);
+			buf += strlen(buf);
+		}
+	}
+
+	return 0;
+}
+
+static u64 __devinit jbusmc_dimm_group_size(u64 base,
+					    const struct linux_prom64_registers *mem_regs,
+					    int num_mem_regs)
+{
+	u64 max = base + (8UL * 1024 * 1024 * 1024);
+	u64 max_seen = base;
+	int i;
+
+	for (i = 0; i < num_mem_regs; i++) {
+		const struct linux_prom64_registers *ent;
+		u64 this_base;
+		u64 this_end;
+
+		ent = &mem_regs[i];
+		this_base = ent->phys_addr;
+		this_end = this_base + ent->reg_size;
+		if (base < this_base || base >= this_end)
+			continue;
+		if (this_end > max)
+			this_end = max;
+		if (this_end > max_seen)
+			max_seen = this_end;
+	}
+
+	return max_seen - base;
+}
+
+static void __devinit jbusmc_construct_one_dimm_group(struct jbusmc *p,
+						      unsigned long index,
+						      const struct linux_prom64_registers *mem_regs,
+						      int num_mem_regs)
+{
+	struct jbusmc_dimm_group *dp = &p->dimm_groups[index];
+
+	dp->controller = p;
+	dp->index = index;
+
+	dp->base_addr  = (p->portid * (64UL * 1024 * 1024 * 1024));
+	dp->base_addr += (index * (8UL * 1024 * 1024 * 1024));
+	dp->size = jbusmc_dimm_group_size(dp->base_addr, mem_regs, num_mem_regs);
+}
+
+static void __devinit jbusmc_construct_dimm_groups(struct jbusmc *p,
+						   const struct linux_prom64_registers *mem_regs,
+						   int num_mem_regs)
+{
+	if (p->mc_reg_1 & JB_MC_REG1_DIMM1_BANK0) {
+		jbusmc_construct_one_dimm_group(p, 0, mem_regs, num_mem_regs);
+		p->num_dimm_groups++;
+	}
+	if (p->mc_reg_1 & JB_MC_REG1_DIMM2_BANK2) {
+		jbusmc_construct_one_dimm_group(p, 1, mem_regs, num_mem_regs);
+		p->num_dimm_groups++;
+	}
+}
+
+static int __devinit jbusmc_probe(struct of_device *op,
+				  const struct of_device_id *match)
+{
+	const struct linux_prom64_registers *mem_regs;
+	struct device_node *mem_node;
+	int err, len, num_mem_regs;
+	struct jbusmc *p;
+	const u32 *prop;
+	const void *ml;
+
+	err = -ENODEV;
+	mem_node = of_find_node_by_path("/memory");
+	if (!mem_node) {
+		printk(KERN_ERR PFX "Cannot find /memory node.\n");
+		goto out;
+	}
+	mem_regs = of_get_property(mem_node, "reg", &len);
+	if (!mem_regs) {
+		printk(KERN_ERR PFX "Cannot get reg property of /memory node.\n");
+		goto out;
+	}
+	num_mem_regs = len / sizeof(*mem_regs);
+
+	err = -ENOMEM;
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
+	if (!p) {
+		printk(KERN_ERR PFX "Cannot allocate struct jbusmc.\n");
+		goto out;
+	}
+
+	INIT_LIST_HEAD(&p->list);
+
+	err = -ENODEV;
+	prop = of_get_property(op->node, "portid", &len);
+	if (!prop || len != 4) {
+		printk(KERN_ERR PFX "Cannot find portid.\n");
+		goto out_free;
+	}
+
+	p->portid = *prop;
+
+	prop = of_get_property(op->node, "memory-control-register-1", &len);
+	if (!prop || len != 8) {
+		printk(KERN_ERR PFX "Cannot get memory control register 1.\n");
+		goto out_free;
+	}
+
+	p->mc_reg_1 = ((u64)prop[0] << 32) | (u64) prop[1];
+
+	err = -ENOMEM;
+	p->regs = of_ioremap(&op->resource[0], 0, JBUSMC_REGS_SIZE, "jbusmc");
+	if (!p->regs) {
+		printk(KERN_ERR PFX "Cannot map jbusmc regs.\n");
+		goto out_free;
+	}
+
+	err = -ENODEV;
+	ml = of_get_property(op->node, "memory-layout", &p->layout_len);
+	if (!ml) {
+		printk(KERN_ERR PFX "Cannot get memory layout property.\n");
+		goto out_iounmap;
+	}
+	if (p->layout_len > sizeof(p->layout)) {
+		printk(KERN_ERR PFX "Unexpected memory-layout size %d\n",
+		       p->layout_len);
+		goto out_iounmap;
+	}
+	memcpy(&p->layout, ml, p->layout_len);
+
+	jbusmc_construct_dimm_groups(p, mem_regs, num_mem_regs);
+
+	mc_list_add(&p->list);
+
+	printk(KERN_INFO PFX "UltraSPARC-IIIi memory controller at %s\n",
+	       op->node->full_name);
+
+	dev_set_drvdata(&op->dev, p);
+
+	err = 0;
+
+out:
+	return err;
+
+out_iounmap:
+	of_iounmap(&op->resource[0], p->regs, JBUSMC_REGS_SIZE);
+
+out_free:
+	kfree(p);
+	goto out;
+}
+
+/* Does BANK decode PHYS_ADDR? */
+static int chmc_bank_match(struct chmc_bank_info *bp, unsigned long phys_addr)
+{
+	unsigned long upper_bits = (phys_addr & PA_UPPER_BITS) >> PA_UPPER_BITS_SHIFT;
+	unsigned long lower_bits = (phys_addr & PA_LOWER_BITS) >> PA_LOWER_BITS_SHIFT;
+
+	/* Bank must be enabled to match. */
+	if (bp->valid == 0)
+		return 0;
+
+	/* Would BANK match upper bits? */
+	upper_bits ^= bp->um;		/* What bits are different? */
+	upper_bits  = ~upper_bits;	/* Invert. */
+	upper_bits |= bp->uk;		/* What bits don't matter for matching? */
+	upper_bits  = ~upper_bits;	/* Invert. */
+
+	if (upper_bits)
+		return 0;
+
+	/* Would BANK match lower bits? */
+	lower_bits ^= bp->lm;		/* What bits are different? */
+	lower_bits  = ~lower_bits;	/* Invert. */
+	lower_bits |= bp->lk;		/* What bits don't matter for matching? */
+	lower_bits  = ~lower_bits;	/* Invert. */
+
+	if (lower_bits)
+		return 0;
+
+	/* I always knew you'd be the one. */
+	return 1;
+}
+
+/* Given PHYS_ADDR, search memory controller banks for a match. */
+static struct chmc_bank_info *chmc_find_bank(unsigned long phys_addr)
+{
+	struct chmc *p;
+
+	list_for_each_entry(p, &mctrl_list, list) {
+		int bank_no;
+
+		for (bank_no = 0; bank_no < CHMCTRL_NBANKS; bank_no++) {
+			struct chmc_bank_info *bp;
+
+			bp = &p->logical_banks[bank_no];
+			if (chmc_bank_match(bp, phys_addr))
+				return bp;
+		}
+	}
+
+	return NULL;
+}
+
+/* This is the main purpose of this driver. */
+static int chmc_print_dimm(int syndrome_code,
+			   unsigned long phys_addr,
+			   char *buf, int buflen)
+{
+	struct chmc_bank_info *bp;
+	struct chmc_obp_mem_layout *prop;
+	int bank_in_controller, first_dimm;
+
+	bp = chmc_find_bank(phys_addr);
+	if (bp == NULL ||
+	    syndrome_code < SYNDROME_MIN ||
+	    syndrome_code > SYNDROME_MAX) {
+		buf[0] = '?';
+		buf[1] = '?';
+		buf[2] = '?';
+		buf[3] = '\0';
+		return 0;
+	}
+
+	prop = &bp->p->layout_prop;
+	bank_in_controller = bp->bank_id & (CHMCTRL_NBANKS - 1);
+	first_dimm  = (bank_in_controller & (CHMCTRL_NDGRPS - 1));
+	first_dimm *= CHMCTRL_NDIMMS;
+
+	if (syndrome_code != SYNDROME_MIN) {
+		char *dimm_str;
+		int pin;
+
+		get_pin_and_dimm_str(syndrome_code, phys_addr, &pin,
+				     &dimm_str, prop, first_dimm);
+		sprintf(buf, "%s, pin %3d", dimm_str, pin);
+	} else {
+		int dimm;
+
+		/* Multi-bit error, we just dump out all the
+		 * dimm labels associated with this bank.
+		 */
+		for (dimm = 0; dimm < CHMCTRL_NDIMMS; dimm++) {
+			sprintf(buf, "%s ",
+				prop->dimm_labels[first_dimm + dimm]);
+			buf += strlen(buf);
+		}
+	}
+	return 0;
+}
+
+/* Accessing the registers is slightly complicated.  If you want
+ * to get at the memory controller which is on the same processor
+ * the code is executing, you must use special ASI load/store else
+ * you go through the global mapping.
+ */
+static u64 chmc_read_mcreg(struct chmc *p, unsigned long offset)
+{
+	unsigned long ret, this_cpu;
+
+	preempt_disable();
+
+	this_cpu = real_hard_smp_processor_id();
+
+	if (p->portid == this_cpu) {
+		__asm__ __volatile__("ldxa	[%1] %2, %0"
+				     : "=r" (ret)
+				     : "r" (offset), "i" (ASI_MCU_CTRL_REG));
+	} else {
+		__asm__ __volatile__("ldxa	[%1] %2, %0"
+				     : "=r" (ret)
+				     : "r" (p->regs + offset),
+				       "i" (ASI_PHYS_BYPASS_EC_E));
+	}
+
+	preempt_enable();
+
+	return ret;
+}
+
+#if 0 /* currently unused */
+static void chmc_write_mcreg(struct chmc *p, unsigned long offset, u64 val)
+{
+	if (p->portid == smp_processor_id()) {
+		__asm__ __volatile__("stxa	%0, [%1] %2"
+				     : : "r" (val),
+				         "r" (offset), "i" (ASI_MCU_CTRL_REG));
+	} else {
+		__asm__ __volatile__("ldxa	%0, [%1] %2"
+				     : : "r" (val),
+				         "r" (p->regs + offset),
+				         "i" (ASI_PHYS_BYPASS_EC_E));
+	}
+}
+#endif
+
+static void chmc_interpret_one_decode_reg(struct chmc *p, int which_bank, u64 val)
+{
+	struct chmc_bank_info *bp = &p->logical_banks[which_bank];
+
+	bp->p = p;
+	bp->bank_id = (CHMCTRL_NBANKS * p->portid) + which_bank;
+	bp->raw_reg = val;
+	bp->valid = (val & MEM_DECODE_VALID) >> MEM_DECODE_VALID_SHIFT;
+	bp->uk = (val & MEM_DECODE_UK) >> MEM_DECODE_UK_SHIFT;
+	bp->um = (val & MEM_DECODE_UM) >> MEM_DECODE_UM_SHIFT;
+	bp->lk = (val & MEM_DECODE_LK) >> MEM_DECODE_LK_SHIFT;
+	bp->lm = (val & MEM_DECODE_LM) >> MEM_DECODE_LM_SHIFT;
+
+	bp->base  =  (bp->um);
+	bp->base &= ~(bp->uk);
+	bp->base <<= PA_UPPER_BITS_SHIFT;
+
+	switch(bp->lk) {
+	case 0xf:
+	default:
+		bp->interleave = 1;
+		break;
+
+	case 0xe:
+		bp->interleave = 2;
+		break;
+
+	case 0xc:
+		bp->interleave = 4;
+		break;
+
+	case 0x8:
+		bp->interleave = 8;
+		break;
+
+	case 0x0:
+		bp->interleave = 16;
+		break;
+	};
+
+	/* UK[10] is reserved, and UK[11] is not set for the SDRAM
+	 * bank size definition.
+	 */
+	bp->size = (((unsigned long)bp->uk &
+		     ((1UL << 10UL) - 1UL)) + 1UL) << PA_UPPER_BITS_SHIFT;
+	bp->size /= bp->interleave;
+}
+
+static void chmc_fetch_decode_regs(struct chmc *p)
+{
+	if (p->layout_size == 0)
+		return;
+
+	chmc_interpret_one_decode_reg(p, 0,
+				      chmc_read_mcreg(p, CHMCTRL_DECODE1));
+	chmc_interpret_one_decode_reg(p, 1,
+				      chmc_read_mcreg(p, CHMCTRL_DECODE2));
+	chmc_interpret_one_decode_reg(p, 2,
+				      chmc_read_mcreg(p, CHMCTRL_DECODE3));
+	chmc_interpret_one_decode_reg(p, 3,
+				      chmc_read_mcreg(p, CHMCTRL_DECODE4));
+}
+
+static int __devinit chmc_probe(struct of_device *op,
+				const struct of_device_id *match)
+{
+	struct device_node *dp = op->node;
+	unsigned long ver;
+	const void *pval;
+	int len, portid;
+	struct chmc *p;
+	int err;
+
+	err = -ENODEV;
+	__asm__ ("rdpr %%ver, %0" : "=r" (ver));
+	if ((ver >> 32UL) == __JALAPENO_ID ||
+	    (ver >> 32UL) == __SERRANO_ID)
+		goto out;
+
+	portid = of_getintprop_default(dp, "portid", -1);
+	if (portid == -1)
+		goto out;
+
+	pval = of_get_property(dp, "memory-layout", &len);
+	if (pval && len > sizeof(p->layout_prop)) {
+		printk(KERN_ERR PFX "Unexpected memory-layout property "
+		       "size %d.\n", len);
+		goto out;
+	}
+
+	err = -ENOMEM;
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
+	if (!p) {
+		printk(KERN_ERR PFX "Could not allocate struct chmc.\n");
+		goto out;
+	}
+
+	p->portid = portid;
+	p->layout_size = len;
+	if (!pval)
+		p->layout_size = 0;
+	else
+		memcpy(&p->layout_prop, pval, len);
+
+	p->regs = of_ioremap(&op->resource[0], 0, 0x48, "chmc");
+	if (!p->regs) {
+		printk(KERN_ERR PFX "Could not map registers.\n");
+		goto out_free;
+	}
+
+	if (p->layout_size != 0UL) {
+		p->timing_control1 = chmc_read_mcreg(p, CHMCTRL_TCTRL1);
+		p->timing_control2 = chmc_read_mcreg(p, CHMCTRL_TCTRL2);
+		p->timing_control3 = chmc_read_mcreg(p, CHMCTRL_TCTRL3);
+		p->timing_control4 = chmc_read_mcreg(p, CHMCTRL_TCTRL4);
+		p->memaddr_control = chmc_read_mcreg(p, CHMCTRL_MACTRL);
+	}
+
+	chmc_fetch_decode_regs(p);
+
+	mc_list_add(&p->list);
+
+	printk(KERN_INFO PFX "UltraSPARC-III memory controller at %s [%s]\n",
+	       dp->full_name,
+	       (p->layout_size ? "ACTIVE" : "INACTIVE"));
+
+	dev_set_drvdata(&op->dev, p);
+
+	err = 0;
+
+out:
+	return err;
+
+out_free:
+	kfree(p);
+	goto out;
+}
+
+static int __devinit us3mc_probe(struct of_device *op,
+				const struct of_device_id *match)
+{
+	if (mc_type == MC_TYPE_SAFARI)
+		return chmc_probe(op, match);
+	else if (mc_type == MC_TYPE_JBUS)
+		return jbusmc_probe(op, match);
+	return -ENODEV;
+}
+
+static void __devexit chmc_destroy(struct of_device *op, struct chmc *p)
+{
+	list_del(&p->list);
+	of_iounmap(&op->resource[0], p->regs, 0x48);
+	kfree(p);
+}
+
+static void __devexit jbusmc_destroy(struct of_device *op, struct jbusmc *p)
+{
+	mc_list_del(&p->list);
+	of_iounmap(&op->resource[0], p->regs, JBUSMC_REGS_SIZE);
+	kfree(p);
+}
+
+static int __devexit us3mc_remove(struct of_device *op)
+{
+	void *p = dev_get_drvdata(&op->dev);
+
+	if (p) {
+		if (mc_type == MC_TYPE_SAFARI)
+			chmc_destroy(op, p);
+		else if (mc_type == MC_TYPE_JBUS)
+			jbusmc_destroy(op, p);
+	}
+	return 0;
+}
+
+static const struct of_device_id us3mc_match[] = {
+	{
+		.name = "memory-controller",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, us3mc_match);
+
+static struct of_platform_driver us3mc_driver = {
+	.name		= "us3mc",
+	.match_table	= us3mc_match,
+	.probe		= us3mc_probe,
+	.remove		= __devexit_p(us3mc_remove),
+};
+
+static inline bool us3mc_platform(void)
+{
+	if (tlb_type == cheetah || tlb_type == cheetah_plus)
+		return true;
+	return false;
+}
+
+static int __init us3mc_init(void)
+{
+	unsigned long ver;
+	int ret;
+
+	if (!us3mc_platform())
+		return -ENODEV;
+
+	__asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
+	if ((ver >> 32UL) == __JALAPENO_ID ||
+	    (ver >> 32UL) == __SERRANO_ID) {
+		mc_type = MC_TYPE_JBUS;
+		us3mc_dimm_printer = jbusmc_print_dimm;
+	} else {
+		mc_type = MC_TYPE_SAFARI;
+		us3mc_dimm_printer = chmc_print_dimm;
+	}
+
+	ret = register_dimm_printer(us3mc_dimm_printer);
+
+	if (!ret) {
+		ret = of_register_driver(&us3mc_driver, &of_bus_type);
+		if (ret)
+			unregister_dimm_printer(us3mc_dimm_printer);
+	}
+	return ret;
+}
+
+static void __exit us3mc_cleanup(void)
+{
+	if (us3mc_platform()) {
+		unregister_dimm_printer(us3mc_dimm_printer);
+		of_unregister_driver(&us3mc_driver);
+	}
+}
+
+module_init(us3mc_init);
+module_exit(us3mc_cleanup);
diff --git a/arch/sparc/kernel/compat_audit.c b/arch/sparc/kernel/compat_audit.c
new file mode 100644
index 000000000000..d865575b25bf
--- /dev/null
+++ b/arch/sparc/kernel/compat_audit.c
@@ -0,0 +1,43 @@
+#define __32bit_syscall_numbers__
+#include <asm/unistd.h>
+
+unsigned sparc32_dir_class[] = {
+#include <asm-generic/audit_dir_write.h>
+~0U
+};
+
+unsigned sparc32_chattr_class[] = {
+#include <asm-generic/audit_change_attr.h>
+~0U
+};
+
+unsigned sparc32_write_class[] = {
+#include <asm-generic/audit_write.h>
+~0U
+};
+
+unsigned sparc32_read_class[] = {
+#include <asm-generic/audit_read.h>
+~0U
+};
+
+unsigned sparc32_signal_class[] = {
+#include <asm-generic/audit_signal.h>
+~0U
+};
+
+int sparc32_classify_syscall(unsigned syscall)
+{
+	switch(syscall) {
+	case __NR_open:
+		return 2;
+	case __NR_openat:
+		return 3;
+	case __NR_socketcall:
+		return 4;
+	case __NR_execve:
+		return 5;
+	default:
+		return 1;
+	}
+}
diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c
index 1fc17f59c6bf..6c2da2420f76 100644
--- a/arch/sparc/kernel/cpu.c
+++ b/arch/sparc/kernel/cpu.c
@@ -8,6 +8,8 @@
 #include <linux/init.h>
 #include <linux/smp.h>
 #include <linux/threads.h>
+
+#include <asm/spitfire.h>
 #include <asm/oplib.h>
 #include <asm/page.h>
 #include <asm/head.h>
@@ -15,153 +17,322 @@
 #include <asm/mbus.h>
 #include <asm/cpudata.h>
 
+#include "kernel.h"
+
 DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
 
-struct cpu_iu_info {
-  int psr_impl;
-  int psr_vers;
-  char* cpu_name;   /* should be enough I hope... */
+struct cpu_info {
+	int psr_vers;
+	const char *name;
+};
+
+struct fpu_info {
+	int fp_vers;
+	const char *name;
 };
 
-struct cpu_fp_info {
-  int psr_impl;
-  int fp_vers;
-  char* fp_name;
+#define NOCPU 8
+#define NOFPU 8
+
+struct manufacturer_info {
+	int psr_impl;
+	struct cpu_info cpu_info[NOCPU];
+	struct fpu_info fpu_info[NOFPU];
 };
 
+#define CPU(ver, _name) \
+{ .psr_vers = ver, .name = _name }
+
+#define FPU(ver, _name) \
+{ .fp_vers = ver, .name = _name }
+
+static const struct manufacturer_info __initconst manufacturer_info[] = {
+{
+	0,
+	/* Sun4/100, 4/200, SLC */
+	.cpu_info = {
+		CPU(0, "Fujitsu  MB86900/1A or LSI L64831 SparcKIT-40"),
+		/* borned STP1012PGA */
+		CPU(4,  "Fujitsu  MB86904"),
+		CPU(5, "Fujitsu TurboSparc MB86907"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(0, "Fujitsu MB86910 or Weitek WTL1164/5"),
+		FPU(1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"),
+		FPU(2, "LSI Logic L64802 or Texas Instruments ACT8847"),
+		/* SparcStation SLC, SparcStation1 */
+		FPU(3, "Weitek WTL3170/2"),
+		/* SPARCstation-5 */
+		FPU(4, "Lsi Logic/Meiko L64804 or compatible"),
+		FPU(-1, NULL)
+	}
+},{
+	1,
+	.cpu_info = {
+		/* SparcStation2, SparcServer 490 & 690 */
+		CPU(0, "LSI Logic Corporation - L64811"),
+		/* SparcStation2 */
+		CPU(1, "Cypress/ROSS CY7C601"),
+		/* Embedded controller */
+		CPU(3, "Cypress/ROSS CY7C611"),
+		/* Ross Technologies HyperSparc */
+		CPU(0xf, "ROSS HyperSparc RT620"),
+		CPU(0xe, "ROSS HyperSparc RT625 or RT626"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(0, "ROSS HyperSparc combined IU/FPU"),
+		FPU(1, "Lsi Logic L64814"),
+		FPU(2, "Texas Instruments TMS390-C602A"),
+		FPU(3, "Cypress CY7C602 FPU"),
+		FPU(-1, NULL)
+	}
+},{
+	2,
+	.cpu_info = {
+		/* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */
+		/* Someone please write the code to support this beast! ;) */
+		CPU(0, "Bipolar Integrated Technology - B5010"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(-1, NULL)
+	}
+},{
+	3,
+	.cpu_info = {
+		CPU(0, "LSI Logic Corporation - unknown-type"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(-1, NULL)
+	}
+},{
+	4,
+	.cpu_info = {
+		CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"),
+		/* SparcClassic  --  borned STP1010TAB-50*/
+		CPU(1, "Texas Instruments, Inc. - MicroSparc"),
+		CPU(2, "Texas Instruments, Inc. - MicroSparc II"),
+		CPU(3, "Texas Instruments, Inc. - SuperSparc 51"),
+		CPU(4, "Texas Instruments, Inc. - SuperSparc 61"),
+		CPU(5, "Texas Instruments, Inc. - unknown"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		/* SuperSparc 50 module */
+		FPU(0, "SuperSparc on-chip FPU"),
+		/* SparcClassic */
+		FPU(4, "TI MicroSparc on chip FPU"),
+		FPU(-1, NULL)
+	}
+},{
+	5,
+	.cpu_info = {
+		CPU(0, "Matsushita - MN10501"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(0, "Matsushita MN10501"),
+		FPU(-1, NULL)
+	}
+},{
+	6,
+	.cpu_info = {
+		CPU(0, "Philips Corporation - unknown"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(-1, NULL)
+	}
+},{
+	7,
+	.cpu_info = {
+		CPU(0, "Harvest VLSI Design Center, Inc. - unknown"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(-1, NULL)
+	}
+},{
+	8,
+	.cpu_info = {
+		CPU(0, "Systems and Processes Engineering Corporation (SPEC)"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(-1, NULL)
+	}
+},{
+	9,
+	.cpu_info = {
+		/* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */
+		CPU(0, "Fujitsu or Weitek Power-UP"),
+		CPU(1, "Fujitsu or Weitek Power-UP"),
+		CPU(2, "Fujitsu or Weitek Power-UP"),
+		CPU(3, "Fujitsu or Weitek Power-UP"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(3, "Fujitsu or Weitek on-chip FPU"),
+		FPU(-1, NULL)
+	}
+},{
+	0x17,
+	.cpu_info = {
+		CPU(0x10, "TI UltraSparc I   (SpitFire)"),
+		CPU(0x11, "TI UltraSparc II  (BlackBird)"),
+		CPU(0x12, "TI UltraSparc IIi (Sabre)"),
+		CPU(0x13, "TI UltraSparc IIe (Hummingbird)"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(0x10, "UltraSparc I integrated FPU"),
+		FPU(0x11, "UltraSparc II integrated FPU"),
+		FPU(0x12, "UltraSparc IIi integrated FPU"),
+		FPU(0x13, "UltraSparc IIe integrated FPU"),
+		FPU(-1, NULL)
+	}
+},{
+	0x22,
+	.cpu_info = {
+		CPU(0x10, "TI UltraSparc I   (SpitFire)"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(0x10, "UltraSparc I integrated FPU"),
+		FPU(-1, NULL)
+	}
+},{
+	0x3e,
+	.cpu_info = {
+		CPU(0x14, "TI UltraSparc III (Cheetah)"),
+		CPU(0x15, "TI UltraSparc III+ (Cheetah+)"),
+		CPU(0x16, "TI UltraSparc IIIi (Jalapeno)"),
+		CPU(0x18, "TI UltraSparc IV (Jaguar)"),
+		CPU(0x19, "TI UltraSparc IV+ (Panther)"),
+		CPU(0x22, "TI UltraSparc IIIi+ (Serrano)"),
+		CPU(-1, NULL)
+	},
+	.fpu_info = {
+		FPU(0x14, "UltraSparc III integrated FPU"),
+		FPU(0x15, "UltraSparc III+ integrated FPU"),
+		FPU(0x16, "UltraSparc IIIi integrated FPU"),
+		FPU(0x18, "UltraSparc IV integrated FPU"),
+		FPU(0x19, "UltraSparc IV+ integrated FPU"),
+		FPU(0x22, "UltraSparc IIIi+ integrated FPU"),
+		FPU(-1, NULL)
+	}
+}};
+
 /* In order to get the fpu type correct, you need to take the IDPROM's
  * machine type value into consideration too.  I will fix this.
  */
-static struct cpu_fp_info linux_sparc_fpu[] = {
-  { 0, 0, "Fujitsu MB86910 or Weitek WTL1164/5"},
-  { 0, 1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"},
-  { 0, 2, "LSI Logic L64802 or Texas Instruments ACT8847"},
-  /* SparcStation SLC, SparcStation1 */
-  { 0, 3, "Weitek WTL3170/2"},
-  /* SPARCstation-5 */
-  { 0, 4, "Lsi Logic/Meiko L64804 or compatible"},
-  { 0, 5, "reserved"},
-  { 0, 6, "reserved"},
-  { 0, 7, "No FPU"},
-  { 1, 0, "ROSS HyperSparc combined IU/FPU"},
-  { 1, 1, "Lsi Logic L64814"},
-  { 1, 2, "Texas Instruments TMS390-C602A"},
-  { 1, 3, "Cypress CY7C602 FPU"},
-  { 1, 4, "reserved"},
-  { 1, 5, "reserved"},
-  { 1, 6, "reserved"},
-  { 1, 7, "No FPU"},
-  { 2, 0, "BIT B5010 or B5110/20 or B5210"},
-  { 2, 1, "reserved"},
-  { 2, 2, "reserved"},
-  { 2, 3, "reserved"},
-  { 2, 4, "reserved"},
-  { 2, 5, "reserved"},
-  { 2, 6, "reserved"},
-  { 2, 7, "No FPU"},
-  /* SuperSparc 50 module */
-  { 4, 0, "SuperSparc on-chip FPU"},
-  /* SparcClassic */
-  { 4, 4, "TI MicroSparc on chip FPU"},
-  { 5, 0, "Matsushita MN10501"},
-  { 5, 1, "reserved"},
-  { 5, 2, "reserved"},
-  { 5, 3, "reserved"},
-  { 5, 4, "reserved"},
-  { 5, 5, "reserved"},
-  { 5, 6, "reserved"},
-  { 5, 7, "No FPU"},
-  { 9, 3, "Fujitsu or Weitek on-chip FPU"},
-};
 
-#define NSPARCFPU  ARRAY_SIZE(linux_sparc_fpu)
-
-static struct cpu_iu_info linux_sparc_chips[] = {
-  /* Sun4/100, 4/200, SLC */
-  { 0, 0, "Fujitsu  MB86900/1A or LSI L64831 SparcKIT-40"},
-  /* borned STP1012PGA */
-  { 0, 4, "Fujitsu  MB86904"},
-  { 0, 5, "Fujitsu TurboSparc MB86907"},
-  /* SparcStation2, SparcServer 490 & 690 */
-  { 1, 0, "LSI Logic Corporation - L64811"},
-  /* SparcStation2 */
-  { 1, 1, "Cypress/ROSS CY7C601"},
-  /* Embedded controller */
-  { 1, 3, "Cypress/ROSS CY7C611"},
-  /* Ross Technologies HyperSparc */
-  { 1, 0xf, "ROSS HyperSparc RT620"},
-  { 1, 0xe, "ROSS HyperSparc RT625 or RT626"},
-  /* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */
-  /* Someone please write the code to support this beast! ;) */
-  { 2, 0, "Bipolar Integrated Technology - B5010"},
-  { 3, 0, "LSI Logic Corporation - unknown-type"},
-  { 4, 0, "Texas Instruments, Inc. - SuperSparc-(II)"},
-  /* SparcClassic  --  borned STP1010TAB-50*/
-  { 4, 1, "Texas Instruments, Inc. - MicroSparc"},
-  { 4, 2, "Texas Instruments, Inc. - MicroSparc II"},
-  { 4, 3, "Texas Instruments, Inc. - SuperSparc 51"},
-  { 4, 4, "Texas Instruments, Inc. - SuperSparc 61"},
-  { 4, 5, "Texas Instruments, Inc. - unknown"},
-  { 5, 0, "Matsushita - MN10501"},
-  { 6, 0, "Philips Corporation - unknown"},
-  { 7, 0, "Harvest VLSI Design Center, Inc. - unknown"},
-  /* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */
-  { 8, 0, "Systems and Processes Engineering Corporation (SPEC)"},
-  { 9, 0, "Fujitsu or Weitek Power-UP"},
-  { 9, 1, "Fujitsu or Weitek Power-UP"},
-  { 9, 2, "Fujitsu or Weitek Power-UP"},
-  { 9, 3, "Fujitsu or Weitek Power-UP"},
-  { 0xa, 0, "UNKNOWN CPU-VENDOR/TYPE"},
-  { 0xb, 0, "UNKNOWN CPU-VENDOR/TYPE"},
-  { 0xc, 0, "UNKNOWN CPU-VENDOR/TYPE"},
-  { 0xd, 0, "UNKNOWN CPU-VENDOR/TYPE"},
-  { 0xe, 0, "UNKNOWN CPU-VENDOR/TYPE"},
-  { 0xf, 0, "UNKNOWN CPU-VENDOR/TYPE"},
-};
+const char *sparc_cpu_type;
+const char *sparc_fpu_type;
 
-#define NSPARCCHIPS  ARRAY_SIZE(linux_sparc_chips)
+unsigned int fsr_storage;
 
-char *sparc_cpu_type;
-char *sparc_fpu_type;
+static void set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)
+{
+	sparc_cpu_type = NULL;
+	sparc_fpu_type = NULL;
+	if (psr_impl < ARRAY_SIZE(manufacturer_info))
+	{
+		const struct cpu_info *cpu;
+		const struct fpu_info *fpu;
 
-unsigned int fsr_storage;
+		cpu = &manufacturer_info[psr_impl].cpu_info[0];
+		while (cpu->psr_vers != -1)
+		{
+			if (cpu->psr_vers == psr_vers) {
+				sparc_cpu_type = cpu->name;
+				sparc_fpu_type = "No FPU";
+				break;
+			}
+			cpu++;
+		}
+		fpu =  &manufacturer_info[psr_impl].fpu_info[0];
+		while (fpu->fp_vers != -1)
+		{
+			if (fpu->fp_vers == fpu_vers) {
+				sparc_fpu_type = fpu->name;
+				break;
+			}
+			fpu++;
+		}
+	}
+	if (sparc_cpu_type == NULL)
+	{
+		printk(KERN_ERR "CPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
+		       psr_impl, psr_vers);
+		sparc_cpu_type = "Unknown CPU";
+	}
+	if (sparc_fpu_type == NULL)
+	{
+		printk(KERN_ERR "FPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
+		       psr_impl, fpu_vers);
+		sparc_fpu_type = "Unknown FPU";
+	}
+}
 
+#ifdef CONFIG_SPARC32
 void __cpuinit cpu_probe(void)
 {
 	int psr_impl, psr_vers, fpu_vers;
-	int i, psr;
+	int psr;
 
-	psr_impl = ((get_psr()>>28)&0xf);
-	psr_vers = ((get_psr()>>24)&0xf);
+	psr_impl = ((get_psr() >> 28) & 0xf);
+	psr_vers = ((get_psr() >> 24) & 0xf);
 
 	psr = get_psr();
 	put_psr(psr | PSR_EF);
-	fpu_vers = ((get_fsr()>>17)&0x7);
+	fpu_vers = ((get_fsr() >> 17) & 0x7);
 	put_psr(psr);
 
-	for(i = 0; i<NSPARCCHIPS; i++) {
-		if(linux_sparc_chips[i].psr_impl == psr_impl)
-			if(linux_sparc_chips[i].psr_vers == psr_vers) {
-				sparc_cpu_type = linux_sparc_chips[i].cpu_name;
-				break;
-			}
-	}
+	set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);
+}
+#else
+static void __init sun4v_cpu_probe(void)
+{
+	switch (sun4v_chip_type) {
+	case SUN4V_CHIP_NIAGARA1:
+		sparc_cpu_type = "UltraSparc T1 (Niagara)";
+		sparc_fpu_type = "UltraSparc T1 integrated FPU";
+		break;
 
-	if(i==NSPARCCHIPS)
-		printk("DEBUG: psr.impl = 0x%x   psr.vers = 0x%x\n", psr_impl, 
-			    psr_vers);
+	case SUN4V_CHIP_NIAGARA2:
+		sparc_cpu_type = "UltraSparc T2 (Niagara2)";
+		sparc_fpu_type = "UltraSparc T2 integrated FPU";
+		break;
 
-	for(i = 0; i<NSPARCFPU; i++) {
-		if(linux_sparc_fpu[i].psr_impl == psr_impl)
-			if(linux_sparc_fpu[i].fp_vers == fpu_vers) {
-				sparc_fpu_type = linux_sparc_fpu[i].fp_name;
-				break;
-			}
+	default:
+		printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n",
+		       prom_cpu_compatible);
+		sparc_cpu_type = "Unknown SUN4V CPU";
+		sparc_fpu_type = "Unknown SUN4V FPU";
+		break;
 	}
+}
+
+static int __init cpu_type_probe(void)
+{
+	if (tlb_type == hypervisor) {
+		sun4v_cpu_probe();
+	} else {
+		unsigned long ver;
+		int manuf, impl;
 
-	if(i == NSPARCFPU) {
-		printk("DEBUG: psr.impl = 0x%x  fsr.vers = 0x%x\n", psr_impl,
-			    fpu_vers);
-		sparc_fpu_type = linux_sparc_fpu[31].fp_name;
+		__asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
+
+		manuf = ((ver >> 48) & 0xffff);
+		impl = ((ver >> 32) & 0xffff);
+		set_cpu_and_fpu(manuf, impl, impl);
 	}
+	return 0;
 }
+
+arch_initcall(cpu_type_probe);
+#endif
diff --git a/arch/sparc/kernel/devices.c b/arch/sparc/kernel/devices.c
index ad656b044b8c..b171ae8de90d 100644
--- a/arch/sparc/kernel/devices.c
+++ b/arch/sparc/kernel/devices.c
@@ -133,14 +133,12 @@ void __init device_scan(void)
 #endif /* !CONFIG_SMP */
 
 	cpu_probe();
-#ifdef CONFIG_SUN_AUXIO
 	{
 		extern void auxio_probe(void);
 		extern void auxio_power_probe(void);
 		auxio_probe();
 		auxio_power_probe();
 	}
-#endif
 	clock_stop_probe();
 
 	if (ARCH_SUN4C)
diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
new file mode 100644
index 000000000000..f52e0534d91d
--- /dev/null
+++ b/arch/sparc/kernel/ds.c
@@ -0,0 +1,1244 @@
+/* ds.c: Domain Services driver for Logical Domains
+ *
+ * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/kthread.h>
+#include <linux/reboot.h>
+#include <linux/cpu.h>
+
+#include <asm/ldc.h>
+#include <asm/vio.h>
+#include <asm/mdesc.h>
+#include <asm/head.h>
+#include <asm/irq.h>
+
+#define DRV_MODULE_NAME		"ds"
+#define PFX DRV_MODULE_NAME	": "
+#define DRV_MODULE_VERSION	"1.0"
+#define DRV_MODULE_RELDATE	"Jul 11, 2007"
+
+static char version[] __devinitdata =
+	DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
+MODULE_DESCRIPTION("Sun LDOM domain services driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+struct ds_msg_tag {
+	__u32			type;
+#define DS_INIT_REQ		0x00
+#define DS_INIT_ACK		0x01
+#define DS_INIT_NACK		0x02
+#define DS_REG_REQ		0x03
+#define DS_REG_ACK		0x04
+#define DS_REG_NACK		0x05
+#define DS_UNREG_REQ		0x06
+#define DS_UNREG_ACK		0x07
+#define DS_UNREG_NACK		0x08
+#define DS_DATA			0x09
+#define DS_NACK			0x0a
+
+	__u32			len;
+};
+
+/* Result codes */
+#define DS_OK			0x00
+#define DS_REG_VER_NACK		0x01
+#define DS_REG_DUP		0x02
+#define DS_INV_HDL		0x03
+#define DS_TYPE_UNKNOWN		0x04
+
+struct ds_version {
+	__u16			major;
+	__u16			minor;
+};
+
+struct ds_ver_req {
+	struct ds_msg_tag	tag;
+	struct ds_version	ver;
+};
+
+struct ds_ver_ack {
+	struct ds_msg_tag	tag;
+	__u16			minor;
+};
+
+struct ds_ver_nack {
+	struct ds_msg_tag	tag;
+	__u16			major;
+};
+
+struct ds_reg_req {
+	struct ds_msg_tag	tag;
+	__u64			handle;
+	__u16			major;
+	__u16			minor;
+	char			svc_id[0];
+};
+
+struct ds_reg_ack {
+	struct ds_msg_tag	tag;
+	__u64			handle;
+	__u16			minor;
+};
+
+struct ds_reg_nack {
+	struct ds_msg_tag	tag;
+	__u64			handle;
+	__u16			major;
+};
+
+struct ds_unreg_req {
+	struct ds_msg_tag	tag;
+	__u64			handle;
+};
+
+struct ds_unreg_ack {
+	struct ds_msg_tag	tag;
+	__u64			handle;
+};
+
+struct ds_unreg_nack {
+	struct ds_msg_tag	tag;
+	__u64			handle;
+};
+
+struct ds_data {
+	struct ds_msg_tag	tag;
+	__u64			handle;
+};
+
+struct ds_data_nack {
+	struct ds_msg_tag	tag;
+	__u64			handle;
+	__u64			result;
+};
+
+struct ds_info;
+struct ds_cap_state {
+	__u64			handle;
+
+	void			(*data)(struct ds_info *dp,
+					struct ds_cap_state *cp,
+					void *buf, int len);
+
+	const char		*service_id;
+
+	u8			state;
+#define CAP_STATE_UNKNOWN	0x00
+#define CAP_STATE_REG_SENT	0x01
+#define CAP_STATE_REGISTERED	0x02
+};
+
+static void md_update_data(struct ds_info *dp, struct ds_cap_state *cp,
+			   void *buf, int len);
+static void domain_shutdown_data(struct ds_info *dp,
+				 struct ds_cap_state *cp,
+				 void *buf, int len);
+static void domain_panic_data(struct ds_info *dp,
+			      struct ds_cap_state *cp,
+			      void *buf, int len);
+#ifdef CONFIG_HOTPLUG_CPU
+static void dr_cpu_data(struct ds_info *dp,
+			struct ds_cap_state *cp,
+			void *buf, int len);
+#endif
+static void ds_pri_data(struct ds_info *dp,
+			struct ds_cap_state *cp,
+			void *buf, int len);
+static void ds_var_data(struct ds_info *dp,
+			struct ds_cap_state *cp,
+			void *buf, int len);
+
+static struct ds_cap_state ds_states_template[] = {
+	{
+		.service_id	= "md-update",
+		.data		= md_update_data,
+	},
+	{
+		.service_id	= "domain-shutdown",
+		.data		= domain_shutdown_data,
+	},
+	{
+		.service_id	= "domain-panic",
+		.data		= domain_panic_data,
+	},
+#ifdef CONFIG_HOTPLUG_CPU
+	{
+		.service_id	= "dr-cpu",
+		.data		= dr_cpu_data,
+	},
+#endif
+	{
+		.service_id	= "pri",
+		.data		= ds_pri_data,
+	},
+	{
+		.service_id	= "var-config",
+		.data		= ds_var_data,
+	},
+	{
+		.service_id	= "var-config-backup",
+		.data		= ds_var_data,
+	},
+};
+
+static DEFINE_SPINLOCK(ds_lock);
+
+struct ds_info {
+	struct ldc_channel	*lp;
+	u8			hs_state;
+#define DS_HS_START		0x01
+#define DS_HS_DONE		0x02
+
+	u64			id;
+
+	void			*rcv_buf;
+	int			rcv_buf_len;
+
+	struct ds_cap_state	*ds_states;
+	int			num_ds_states;
+
+	struct ds_info		*next;
+};
+
+static struct ds_info *ds_info_list;
+
+static struct ds_cap_state *find_cap(struct ds_info *dp, u64 handle)
+{
+	unsigned int index = handle >> 32;
+
+	if (index >= dp->num_ds_states)
+		return NULL;
+	return &dp->ds_states[index];
+}
+
+static struct ds_cap_state *find_cap_by_string(struct ds_info *dp,
+					       const char *name)
+{
+	int i;
+
+	for (i = 0; i < dp->num_ds_states; i++) {
+		if (strcmp(dp->ds_states[i].service_id, name))
+			continue;
+
+		return &dp->ds_states[i];
+	}
+	return NULL;
+}
+
+static int __ds_send(struct ldc_channel *lp, void *data, int len)
+{
+	int err, limit = 1000;
+
+	err = -EINVAL;
+	while (limit-- > 0) {
+		err = ldc_write(lp, data, len);
+		if (!err || (err != -EAGAIN))
+			break;
+		udelay(1);
+	}
+
+	return err;
+}
+
+static int ds_send(struct ldc_channel *lp, void *data, int len)
+{
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&ds_lock, flags);
+	err = __ds_send(lp, data, len);
+	spin_unlock_irqrestore(&ds_lock, flags);
+
+	return err;
+}
+
+struct ds_md_update_req {
+	__u64				req_num;
+};
+
+struct ds_md_update_res {
+	__u64				req_num;
+	__u32				result;
+};
+
+static void md_update_data(struct ds_info *dp,
+			   struct ds_cap_state *cp,
+			   void *buf, int len)
+{
+	struct ldc_channel *lp = dp->lp;
+	struct ds_data *dpkt = buf;
+	struct ds_md_update_req *rp;
+	struct {
+		struct ds_data		data;
+		struct ds_md_update_res	res;
+	} pkt;
+
+	rp = (struct ds_md_update_req *) (dpkt + 1);
+
+	printk(KERN_INFO "ds-%lu: Machine description update.\n", dp->id);
+
+	mdesc_update();
+
+	memset(&pkt, 0, sizeof(pkt));
+	pkt.data.tag.type = DS_DATA;
+	pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
+	pkt.data.handle = cp->handle;
+	pkt.res.req_num = rp->req_num;
+	pkt.res.result = DS_OK;
+
+	ds_send(lp, &pkt, sizeof(pkt));
+}
+
+struct ds_shutdown_req {
+	__u64				req_num;
+	__u32				ms_delay;
+};
+
+struct ds_shutdown_res {
+	__u64				req_num;
+	__u32				result;
+	char				reason[1];
+};
+
+static void domain_shutdown_data(struct ds_info *dp,
+				 struct ds_cap_state *cp,
+				 void *buf, int len)
+{
+	struct ldc_channel *lp = dp->lp;
+	struct ds_data *dpkt = buf;
+	struct ds_shutdown_req *rp;
+	struct {
+		struct ds_data		data;
+		struct ds_shutdown_res	res;
+	} pkt;
+
+	rp = (struct ds_shutdown_req *) (dpkt + 1);
+
+	printk(KERN_ALERT "ds-%lu: Shutdown request from "
+	       "LDOM manager received.\n", dp->id);
+
+	memset(&pkt, 0, sizeof(pkt));
+	pkt.data.tag.type = DS_DATA;
+	pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
+	pkt.data.handle = cp->handle;
+	pkt.res.req_num = rp->req_num;
+	pkt.res.result = DS_OK;
+	pkt.res.reason[0] = 0;
+
+	ds_send(lp, &pkt, sizeof(pkt));
+
+	orderly_poweroff(true);
+}
+
+struct ds_panic_req {
+	__u64				req_num;
+};
+
+struct ds_panic_res {
+	__u64				req_num;
+	__u32				result;
+	char				reason[1];
+};
+
+static void domain_panic_data(struct ds_info *dp,
+			      struct ds_cap_state *cp,
+			      void *buf, int len)
+{
+	struct ldc_channel *lp = dp->lp;
+	struct ds_data *dpkt = buf;
+	struct ds_panic_req *rp;
+	struct {
+		struct ds_data		data;
+		struct ds_panic_res	res;
+	} pkt;
+
+	rp = (struct ds_panic_req *) (dpkt + 1);
+
+	printk(KERN_ALERT "ds-%lu: Panic request from "
+	       "LDOM manager received.\n", dp->id);
+
+	memset(&pkt, 0, sizeof(pkt));
+	pkt.data.tag.type = DS_DATA;
+	pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
+	pkt.data.handle = cp->handle;
+	pkt.res.req_num = rp->req_num;
+	pkt.res.result = DS_OK;
+	pkt.res.reason[0] = 0;
+
+	ds_send(lp, &pkt, sizeof(pkt));
+
+	panic("PANIC requested by LDOM manager.");
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+struct dr_cpu_tag {
+	__u64				req_num;
+	__u32				type;
+#define DR_CPU_CONFIGURE		0x43
+#define DR_CPU_UNCONFIGURE		0x55
+#define DR_CPU_FORCE_UNCONFIGURE	0x46
+#define DR_CPU_STATUS			0x53
+
+/* Responses */
+#define DR_CPU_OK			0x6f
+#define DR_CPU_ERROR			0x65
+
+	__u32				num_records;
+};
+
+struct dr_cpu_resp_entry {
+	__u32				cpu;
+	__u32				result;
+#define DR_CPU_RES_OK			0x00
+#define DR_CPU_RES_FAILURE		0x01
+#define DR_CPU_RES_BLOCKED		0x02
+#define DR_CPU_RES_CPU_NOT_RESPONDING	0x03
+#define DR_CPU_RES_NOT_IN_MD		0x04
+
+	__u32				stat;
+#define DR_CPU_STAT_NOT_PRESENT		0x00
+#define DR_CPU_STAT_UNCONFIGURED	0x01
+#define DR_CPU_STAT_CONFIGURED		0x02
+
+	__u32				str_off;
+};
+
+static void __dr_cpu_send_error(struct ds_info *dp,
+				struct ds_cap_state *cp,
+				struct ds_data *data)
+{
+	struct dr_cpu_tag *tag = (struct dr_cpu_tag *) (data + 1);
+	struct {
+		struct ds_data		data;
+		struct dr_cpu_tag	tag;
+	} pkt;
+	int msg_len;
+
+	memset(&pkt, 0, sizeof(pkt));
+	pkt.data.tag.type = DS_DATA;
+	pkt.data.handle = cp->handle;
+	pkt.tag.req_num = tag->req_num;
+	pkt.tag.type = DR_CPU_ERROR;
+	pkt.tag.num_records = 0;
+
+	msg_len = (sizeof(struct ds_data) +
+		   sizeof(struct dr_cpu_tag));
+
+	pkt.data.tag.len = msg_len - sizeof(struct ds_msg_tag);
+
+	__ds_send(dp->lp, &pkt, msg_len);
+}
+
+static void dr_cpu_send_error(struct ds_info *dp,
+			      struct ds_cap_state *cp,
+			      struct ds_data *data)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&ds_lock, flags);
+	__dr_cpu_send_error(dp, cp, data);
+	spin_unlock_irqrestore(&ds_lock, flags);
+}
+
+#define CPU_SENTINEL	0xffffffff
+
+static void purge_dups(u32 *list, u32 num_ents)
+{
+	unsigned int i;
+
+	for (i = 0; i < num_ents; i++) {
+		u32 cpu = list[i];
+		unsigned int j;
+
+		if (cpu == CPU_SENTINEL)
+			continue;
+
+		for (j = i + 1; j < num_ents; j++) {
+			if (list[j] == cpu)
+				list[j] = CPU_SENTINEL;
+		}
+	}
+}
+
+static int dr_cpu_size_response(int ncpus)
+{
+	return (sizeof(struct ds_data) +
+		sizeof(struct dr_cpu_tag) +
+		(sizeof(struct dr_cpu_resp_entry) * ncpus));
+}
+
+static void dr_cpu_init_response(struct ds_data *resp, u64 req_num,
+				 u64 handle, int resp_len, int ncpus,
+				 cpumask_t *mask, u32 default_stat)
+{
+	struct dr_cpu_resp_entry *ent;
+	struct dr_cpu_tag *tag;
+	int i, cpu;
+
+	tag = (struct dr_cpu_tag *) (resp + 1);
+	ent = (struct dr_cpu_resp_entry *) (tag + 1);
+
+	resp->tag.type = DS_DATA;
+	resp->tag.len = resp_len - sizeof(struct ds_msg_tag);
+	resp->handle = handle;
+	tag->req_num = req_num;
+	tag->type = DR_CPU_OK;
+	tag->num_records = ncpus;
+
+	i = 0;
+	for_each_cpu_mask(cpu, *mask) {
+		ent[i].cpu = cpu;
+		ent[i].result = DR_CPU_RES_OK;
+		ent[i].stat = default_stat;
+		i++;
+	}
+	BUG_ON(i != ncpus);
+}
+
+static void dr_cpu_mark(struct ds_data *resp, int cpu, int ncpus,
+			u32 res, u32 stat)
+{
+	struct dr_cpu_resp_entry *ent;
+	struct dr_cpu_tag *tag;
+	int i;
+
+	tag = (struct dr_cpu_tag *) (resp + 1);
+	ent = (struct dr_cpu_resp_entry *) (tag + 1);
+
+	for (i = 0; i < ncpus; i++) {
+		if (ent[i].cpu != cpu)
+			continue;
+		ent[i].result = res;
+		ent[i].stat = stat;
+		break;
+	}
+}
+
+static int __cpuinit dr_cpu_configure(struct ds_info *dp,
+				      struct ds_cap_state *cp,
+				      u64 req_num,
+				      cpumask_t *mask)
+{
+	struct ds_data *resp;
+	int resp_len, ncpus, cpu;
+	unsigned long flags;
+
+	ncpus = cpus_weight(*mask);
+	resp_len = dr_cpu_size_response(ncpus);
+	resp = kzalloc(resp_len, GFP_KERNEL);
+	if (!resp)
+		return -ENOMEM;
+
+	dr_cpu_init_response(resp, req_num, cp->handle,
+			     resp_len, ncpus, mask,
+			     DR_CPU_STAT_CONFIGURED);
+
+	mdesc_fill_in_cpu_data(*mask);
+
+	for_each_cpu_mask(cpu, *mask) {
+		int err;
+
+		printk(KERN_INFO "ds-%lu: Starting cpu %d...\n",
+		       dp->id, cpu);
+		err = cpu_up(cpu);
+		if (err) {
+			__u32 res = DR_CPU_RES_FAILURE;
+			__u32 stat = DR_CPU_STAT_UNCONFIGURED;
+
+			if (!cpu_present(cpu)) {
+				/* CPU not present in MD */
+				res = DR_CPU_RES_NOT_IN_MD;
+				stat = DR_CPU_STAT_NOT_PRESENT;
+			} else if (err == -ENODEV) {
+				/* CPU did not call in successfully */
+				res = DR_CPU_RES_CPU_NOT_RESPONDING;
+			}
+
+			printk(KERN_INFO "ds-%lu: CPU startup failed err=%d\n",
+			       dp->id, err);
+			dr_cpu_mark(resp, cpu, ncpus, res, stat);
+		}
+	}
+
+	spin_lock_irqsave(&ds_lock, flags);
+	__ds_send(dp->lp, resp, resp_len);
+	spin_unlock_irqrestore(&ds_lock, flags);
+
+	kfree(resp);
+
+	/* Redistribute IRQs, taking into account the new cpus.  */
+	fixup_irqs();
+
+	return 0;
+}
+
+static int dr_cpu_unconfigure(struct ds_info *dp,
+			      struct ds_cap_state *cp,
+			      u64 req_num,
+			      cpumask_t *mask)
+{
+	struct ds_data *resp;
+	int resp_len, ncpus, cpu;
+	unsigned long flags;
+
+	ncpus = cpus_weight(*mask);
+	resp_len = dr_cpu_size_response(ncpus);
+	resp = kzalloc(resp_len, GFP_KERNEL);
+	if (!resp)
+		return -ENOMEM;
+
+	dr_cpu_init_response(resp, req_num, cp->handle,
+			     resp_len, ncpus, mask,
+			     DR_CPU_STAT_UNCONFIGURED);
+
+	for_each_cpu_mask(cpu, *mask) {
+		int err;
+
+		printk(KERN_INFO "ds-%lu: Shutting down cpu %d...\n",
+		       dp->id, cpu);
+		err = cpu_down(cpu);
+		if (err)
+			dr_cpu_mark(resp, cpu, ncpus,
+				    DR_CPU_RES_FAILURE,
+				    DR_CPU_STAT_CONFIGURED);
+	}
+
+	spin_lock_irqsave(&ds_lock, flags);
+	__ds_send(dp->lp, resp, resp_len);
+	spin_unlock_irqrestore(&ds_lock, flags);
+
+	kfree(resp);
+
+	return 0;
+}
+
+static void __cpuinit dr_cpu_data(struct ds_info *dp,
+				  struct ds_cap_state *cp,
+				  void *buf, int len)
+{
+	struct ds_data *data = buf;
+	struct dr_cpu_tag *tag = (struct dr_cpu_tag *) (data + 1);
+	u32 *cpu_list = (u32 *) (tag + 1);
+	u64 req_num = tag->req_num;
+	cpumask_t mask;
+	unsigned int i;
+	int err;
+
+	switch (tag->type) {
+	case DR_CPU_CONFIGURE:
+	case DR_CPU_UNCONFIGURE:
+	case DR_CPU_FORCE_UNCONFIGURE:
+		break;
+
+	default:
+		dr_cpu_send_error(dp, cp, data);
+		return;
+	}
+
+	purge_dups(cpu_list, tag->num_records);
+
+	cpus_clear(mask);
+	for (i = 0; i < tag->num_records; i++) {
+		if (cpu_list[i] == CPU_SENTINEL)
+			continue;
+
+		if (cpu_list[i] < NR_CPUS)
+			cpu_set(cpu_list[i], mask);
+	}
+
+	if (tag->type == DR_CPU_CONFIGURE)
+		err = dr_cpu_configure(dp, cp, req_num, &mask);
+	else
+		err = dr_cpu_unconfigure(dp, cp, req_num, &mask);
+
+	if (err)
+		dr_cpu_send_error(dp, cp, data);
+}
+#endif /* CONFIG_HOTPLUG_CPU */
+
+struct ds_pri_msg {
+	__u64				req_num;
+	__u64				type;
+#define DS_PRI_REQUEST			0x00
+#define DS_PRI_DATA			0x01
+#define DS_PRI_UPDATE			0x02
+};
+
+static void ds_pri_data(struct ds_info *dp,
+			struct ds_cap_state *cp,
+			void *buf, int len)
+{
+	struct ds_data *dpkt = buf;
+	struct ds_pri_msg *rp;
+
+	rp = (struct ds_pri_msg *) (dpkt + 1);
+
+	printk(KERN_INFO "ds-%lu: PRI REQ [%lx:%lx], len=%d\n",
+	       dp->id, rp->req_num, rp->type, len);
+}
+
+struct ds_var_hdr {
+	__u32				type;
+#define DS_VAR_SET_REQ			0x00
+#define DS_VAR_DELETE_REQ		0x01
+#define DS_VAR_SET_RESP			0x02
+#define DS_VAR_DELETE_RESP		0x03
+};
+
+struct ds_var_set_msg {
+	struct ds_var_hdr		hdr;
+	char				name_and_value[0];
+};
+
+struct ds_var_delete_msg {
+	struct ds_var_hdr		hdr;
+	char				name[0];
+};
+
+struct ds_var_resp {
+	struct ds_var_hdr		hdr;
+	__u32				result;
+#define DS_VAR_SUCCESS			0x00
+#define DS_VAR_NO_SPACE			0x01
+#define DS_VAR_INVALID_VAR		0x02
+#define DS_VAR_INVALID_VAL		0x03
+#define DS_VAR_NOT_PRESENT		0x04
+};
+
+static DEFINE_MUTEX(ds_var_mutex);
+static int ds_var_doorbell;
+static int ds_var_response;
+
+static void ds_var_data(struct ds_info *dp,
+			struct ds_cap_state *cp,
+			void *buf, int len)
+{
+	struct ds_data *dpkt = buf;
+	struct ds_var_resp *rp;
+
+	rp = (struct ds_var_resp *) (dpkt + 1);
+
+	if (rp->hdr.type != DS_VAR_SET_RESP &&
+	    rp->hdr.type != DS_VAR_DELETE_RESP)
+		return;
+
+	ds_var_response = rp->result;
+	wmb();
+	ds_var_doorbell = 1;
+}
+
+void ldom_set_var(const char *var, const char *value)
+{
+	struct ds_cap_state *cp;
+	struct ds_info *dp;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ds_lock, flags);
+	cp = NULL;
+	for (dp = ds_info_list; dp; dp = dp->next) {
+		struct ds_cap_state *tmp;
+
+		tmp = find_cap_by_string(dp, "var-config");
+		if (tmp && tmp->state == CAP_STATE_REGISTERED) {
+			cp = tmp;
+			break;
+		}
+	}
+	if (!cp) {
+		for (dp = ds_info_list; dp; dp = dp->next) {
+			struct ds_cap_state *tmp;
+
+			tmp = find_cap_by_string(dp, "var-config-backup");
+			if (tmp && tmp->state == CAP_STATE_REGISTERED) {
+				cp = tmp;
+				break;
+			}
+		}
+	}
+	spin_unlock_irqrestore(&ds_lock, flags);
+
+	if (cp) {
+		union {
+			struct {
+				struct ds_data		data;
+				struct ds_var_set_msg	msg;
+			} header;
+			char			all[512];
+		} pkt;
+		char  *base, *p;
+		int msg_len, loops;
+
+		memset(&pkt, 0, sizeof(pkt));
+		pkt.header.data.tag.type = DS_DATA;
+		pkt.header.data.handle = cp->handle;
+		pkt.header.msg.hdr.type = DS_VAR_SET_REQ;
+		base = p = &pkt.header.msg.name_and_value[0];
+		strcpy(p, var);
+		p += strlen(var) + 1;
+		strcpy(p, value);
+		p += strlen(value) + 1;
+
+		msg_len = (sizeof(struct ds_data) +
+			   sizeof(struct ds_var_set_msg) +
+			   (p - base));
+		msg_len = (msg_len + 3) & ~3;
+		pkt.header.data.tag.len = msg_len - sizeof(struct ds_msg_tag);
+
+		mutex_lock(&ds_var_mutex);
+
+		spin_lock_irqsave(&ds_lock, flags);
+		ds_var_doorbell = 0;
+		ds_var_response = -1;
+
+		__ds_send(dp->lp, &pkt, msg_len);
+		spin_unlock_irqrestore(&ds_lock, flags);
+
+		loops = 1000;
+		while (ds_var_doorbell == 0) {
+			if (loops-- < 0)
+				break;
+			barrier();
+			udelay(100);
+		}
+
+		mutex_unlock(&ds_var_mutex);
+
+		if (ds_var_doorbell == 0 ||
+		    ds_var_response != DS_VAR_SUCCESS)
+			printk(KERN_ERR "ds-%lu: var-config [%s:%s] "
+			       "failed, response(%d).\n",
+			       dp->id, var, value,
+			       ds_var_response);
+	} else {
+		printk(KERN_ERR PFX "var-config not registered so "
+		       "could not set (%s) variable to (%s).\n",
+		       var, value);
+	}
+}
+
+void ldom_reboot(const char *boot_command)
+{
+	/* Don't bother with any of this if the boot_command
+	 * is empty.
+	 */
+	if (boot_command && strlen(boot_command)) {
+		char full_boot_str[256];
+
+		strcpy(full_boot_str, "boot ");
+		strcpy(full_boot_str + strlen("boot "), boot_command);
+
+		ldom_set_var("reboot-command", full_boot_str);
+	}
+	sun4v_mach_sir();
+}
+
+void ldom_power_off(void)
+{
+	sun4v_mach_exit(0);
+}
+
+static void ds_conn_reset(struct ds_info *dp)
+{
+	printk(KERN_ERR "ds-%lu: ds_conn_reset() from %p\n",
+	       dp->id, __builtin_return_address(0));
+}
+
+static int register_services(struct ds_info *dp)
+{
+	struct ldc_channel *lp = dp->lp;
+	int i;
+
+	for (i = 0; i < dp->num_ds_states; i++) {
+		struct {
+			struct ds_reg_req req;
+			u8 id_buf[256];
+		} pbuf;
+		struct ds_cap_state *cp = &dp->ds_states[i];
+		int err, msg_len;
+		u64 new_count;
+
+		if (cp->state == CAP_STATE_REGISTERED)
+			continue;
+
+		new_count = sched_clock() & 0xffffffff;
+		cp->handle = ((u64) i << 32) | new_count;
+
+		msg_len = (sizeof(struct ds_reg_req) +
+			   strlen(cp->service_id));
+
+		memset(&pbuf, 0, sizeof(pbuf));
+		pbuf.req.tag.type = DS_REG_REQ;
+		pbuf.req.tag.len = (msg_len - sizeof(struct ds_msg_tag));
+		pbuf.req.handle = cp->handle;
+		pbuf.req.major = 1;
+		pbuf.req.minor = 0;
+		strcpy(pbuf.req.svc_id, cp->service_id);
+
+		err = __ds_send(lp, &pbuf, msg_len);
+		if (err > 0)
+			cp->state = CAP_STATE_REG_SENT;
+	}
+	return 0;
+}
+
+static int ds_handshake(struct ds_info *dp, struct ds_msg_tag *pkt)
+{
+
+	if (dp->hs_state == DS_HS_START) {
+		if (pkt->type != DS_INIT_ACK)
+			goto conn_reset;
+
+		dp->hs_state = DS_HS_DONE;
+
+		return register_services(dp);
+	}
+
+	if (dp->hs_state != DS_HS_DONE)
+		goto conn_reset;
+
+	if (pkt->type == DS_REG_ACK) {
+		struct ds_reg_ack *ap = (struct ds_reg_ack *) pkt;
+		struct ds_cap_state *cp = find_cap(dp, ap->handle);
+
+		if (!cp) {
+			printk(KERN_ERR "ds-%lu: REG ACK for unknown "
+			       "handle %lx\n", dp->id, ap->handle);
+			return 0;
+		}
+		printk(KERN_INFO "ds-%lu: Registered %s service.\n",
+		       dp->id, cp->service_id);
+		cp->state = CAP_STATE_REGISTERED;
+	} else if (pkt->type == DS_REG_NACK) {
+		struct ds_reg_nack *np = (struct ds_reg_nack *) pkt;
+		struct ds_cap_state *cp = find_cap(dp, np->handle);
+
+		if (!cp) {
+			printk(KERN_ERR "ds-%lu: REG NACK for "
+			       "unknown handle %lx\n",
+			       dp->id, np->handle);
+			return 0;
+		}
+		cp->state = CAP_STATE_UNKNOWN;
+	}
+
+	return 0;
+
+conn_reset:
+	ds_conn_reset(dp);
+	return -ECONNRESET;
+}
+
+static void __send_ds_nack(struct ds_info *dp, u64 handle)
+{
+	struct ds_data_nack nack = {
+		.tag = {
+			.type = DS_NACK,
+			.len = (sizeof(struct ds_data_nack) -
+				sizeof(struct ds_msg_tag)),
+		},
+		.handle = handle,
+		.result = DS_INV_HDL,
+	};
+
+	__ds_send(dp->lp, &nack, sizeof(nack));
+}
+
+static LIST_HEAD(ds_work_list);
+static DECLARE_WAIT_QUEUE_HEAD(ds_wait);
+
+struct ds_queue_entry {
+	struct list_head		list;
+	struct ds_info			*dp;
+	int				req_len;
+	int				__pad;
+	u64				req[0];
+};
+
+static void process_ds_work(void)
+{
+	struct ds_queue_entry *qp, *tmp;
+	unsigned long flags;
+	LIST_HEAD(todo);
+
+	spin_lock_irqsave(&ds_lock, flags);
+	list_splice_init(&ds_work_list, &todo);
+	spin_unlock_irqrestore(&ds_lock, flags);
+
+	list_for_each_entry_safe(qp, tmp, &todo, list) {
+		struct ds_data *dpkt = (struct ds_data *) qp->req;
+		struct ds_info *dp = qp->dp;
+		struct ds_cap_state *cp = find_cap(dp, dpkt->handle);
+		int req_len = qp->req_len;
+
+		if (!cp) {
+			printk(KERN_ERR "ds-%lu: Data for unknown "
+			       "handle %lu\n",
+			       dp->id, dpkt->handle);
+
+			spin_lock_irqsave(&ds_lock, flags);
+			__send_ds_nack(dp, dpkt->handle);
+			spin_unlock_irqrestore(&ds_lock, flags);
+		} else {
+			cp->data(dp, cp, dpkt, req_len);
+		}
+
+		list_del(&qp->list);
+		kfree(qp);
+	}
+}
+
+static int ds_thread(void *__unused)
+{
+	DEFINE_WAIT(wait);
+
+	while (1) {
+		prepare_to_wait(&ds_wait, &wait, TASK_INTERRUPTIBLE);
+		if (list_empty(&ds_work_list))
+			schedule();
+		finish_wait(&ds_wait, &wait);
+
+		if (kthread_should_stop())
+			break;
+
+		process_ds_work();
+	}
+
+	return 0;
+}
+
+static int ds_data(struct ds_info *dp, struct ds_msg_tag *pkt, int len)
+{
+	struct ds_data *dpkt = (struct ds_data *) pkt;
+	struct ds_queue_entry *qp;
+
+	qp = kmalloc(sizeof(struct ds_queue_entry) + len, GFP_ATOMIC);
+	if (!qp) {
+		__send_ds_nack(dp, dpkt->handle);
+	} else {
+		qp->dp = dp;
+		memcpy(&qp->req, pkt, len);
+		list_add_tail(&qp->list, &ds_work_list);
+		wake_up(&ds_wait);
+	}
+	return 0;
+}
+
+static void ds_up(struct ds_info *dp)
+{
+	struct ldc_channel *lp = dp->lp;
+	struct ds_ver_req req;
+	int err;
+
+	req.tag.type = DS_INIT_REQ;
+	req.tag.len = sizeof(req) - sizeof(struct ds_msg_tag);
+	req.ver.major = 1;
+	req.ver.minor = 0;
+
+	err = __ds_send(lp, &req, sizeof(req));
+	if (err > 0)
+		dp->hs_state = DS_HS_START;
+}
+
+static void ds_reset(struct ds_info *dp)
+{
+	int i;
+
+	dp->hs_state = 0;
+
+	for (i = 0; i < dp->num_ds_states; i++) {
+		struct ds_cap_state *cp = &dp->ds_states[i];
+
+		cp->state = CAP_STATE_UNKNOWN;
+	}
+}
+
+static void ds_event(void *arg, int event)
+{
+	struct ds_info *dp = arg;
+	struct ldc_channel *lp = dp->lp;
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&ds_lock, flags);
+
+	if (event == LDC_EVENT_UP) {
+		ds_up(dp);
+		spin_unlock_irqrestore(&ds_lock, flags);
+		return;
+	}
+
+	if (event == LDC_EVENT_RESET) {
+		ds_reset(dp);
+		spin_unlock_irqrestore(&ds_lock, flags);
+		return;
+	}
+
+	if (event != LDC_EVENT_DATA_READY) {
+		printk(KERN_WARNING "ds-%lu: Unexpected LDC event %d\n",
+		       dp->id, event);
+		spin_unlock_irqrestore(&ds_lock, flags);
+		return;
+	}
+
+	err = 0;
+	while (1) {
+		struct ds_msg_tag *tag;
+
+		err = ldc_read(lp, dp->rcv_buf, sizeof(*tag));
+
+		if (unlikely(err < 0)) {
+			if (err == -ECONNRESET)
+				ds_conn_reset(dp);
+			break;
+		}
+		if (err == 0)
+			break;
+
+		tag = dp->rcv_buf;
+		err = ldc_read(lp, tag + 1, tag->len);
+
+		if (unlikely(err < 0)) {
+			if (err == -ECONNRESET)
+				ds_conn_reset(dp);
+			break;
+		}
+		if (err < tag->len)
+			break;
+
+		if (tag->type < DS_DATA)
+			err = ds_handshake(dp, dp->rcv_buf);
+		else
+			err = ds_data(dp, dp->rcv_buf,
+				      sizeof(*tag) + err);
+		if (err == -ECONNRESET)
+			break;
+	}
+
+	spin_unlock_irqrestore(&ds_lock, flags);
+}
+
+static int __devinit ds_probe(struct vio_dev *vdev,
+			      const struct vio_device_id *id)
+{
+	static int ds_version_printed;
+	struct ldc_channel_config ds_cfg = {
+		.event		= ds_event,
+		.mtu		= 4096,
+		.mode		= LDC_MODE_STREAM,
+	};
+	struct mdesc_handle *hp;
+	struct ldc_channel *lp;
+	struct ds_info *dp;
+	const u64 *val;
+	int err, i;
+
+	if (ds_version_printed++ == 0)
+		printk(KERN_INFO "%s", version);
+
+	dp = kzalloc(sizeof(*dp), GFP_KERNEL);
+	err = -ENOMEM;
+	if (!dp)
+		goto out_err;
+
+	hp = mdesc_grab();
+	val = mdesc_get_property(hp, vdev->mp, "id", NULL);
+	if (val)
+		dp->id = *val;
+	mdesc_release(hp);
+
+	dp->rcv_buf = kzalloc(4096, GFP_KERNEL);
+	if (!dp->rcv_buf)
+		goto out_free_dp;
+
+	dp->rcv_buf_len = 4096;
+
+	dp->ds_states = kzalloc(sizeof(ds_states_template),
+				GFP_KERNEL);
+	if (!dp->ds_states)
+		goto out_free_rcv_buf;
+
+	memcpy(dp->ds_states, ds_states_template,
+	       sizeof(ds_states_template));
+	dp->num_ds_states = ARRAY_SIZE(ds_states_template);
+
+	for (i = 0; i < dp->num_ds_states; i++)
+		dp->ds_states[i].handle = ((u64)i << 32);
+
+	ds_cfg.tx_irq = vdev->tx_irq;
+	ds_cfg.rx_irq = vdev->rx_irq;
+
+	lp = ldc_alloc(vdev->channel_id, &ds_cfg, dp);
+	if (IS_ERR(lp)) {
+		err = PTR_ERR(lp);
+		goto out_free_ds_states;
+	}
+	dp->lp = lp;
+
+	err = ldc_bind(lp, "DS");
+	if (err)
+		goto out_free_ldc;
+
+	spin_lock_irq(&ds_lock);
+	dp->next = ds_info_list;
+	ds_info_list = dp;
+	spin_unlock_irq(&ds_lock);
+
+	return err;
+
+out_free_ldc:
+	ldc_free(dp->lp);
+
+out_free_ds_states:
+	kfree(dp->ds_states);
+
+out_free_rcv_buf:
+	kfree(dp->rcv_buf);
+
+out_free_dp:
+	kfree(dp);
+
+out_err:
+	return err;
+}
+
+static int ds_remove(struct vio_dev *vdev)
+{
+	return 0;
+}
+
+static struct vio_device_id __initdata ds_match[] = {
+	{
+		.type = "domain-services-port",
+	},
+	{},
+};
+
+static struct vio_driver ds_driver = {
+	.id_table	= ds_match,
+	.probe		= ds_probe,
+	.remove		= ds_remove,
+	.driver		= {
+		.name	= "ds",
+		.owner	= THIS_MODULE,
+	}
+};
+
+static int __init ds_init(void)
+{
+	kthread_run(ds_thread, NULL, "kldomd");
+
+	return vio_register_driver(&ds_driver);
+}
+
+subsys_initcall(ds_init);
diff --git a/arch/sparc/kernel/dtlb_miss.S b/arch/sparc/kernel/dtlb_miss.S
new file mode 100644
index 000000000000..09a6a15a7105
--- /dev/null
+++ b/arch/sparc/kernel/dtlb_miss.S
@@ -0,0 +1,39 @@
+/* DTLB ** ICACHE line 1: Context 0 check and TSB load	*/
+	ldxa	[%g0] ASI_DMMU_TSB_8KB_PTR, %g1	! Get TSB 8K pointer
+	ldxa	[%g0] ASI_DMMU, %g6		! Get TAG TARGET
+	srlx	%g6, 48, %g5			! Get context
+	sllx	%g6, 22, %g6			! Zero out context
+	brz,pn	%g5, kvmap_dtlb			! Context 0 processing
+	 srlx	%g6, 22, %g6			! Delay slot
+	TSB_LOAD_QUAD(%g1, %g4)			! Load TSB entry
+	cmp	%g4, %g6			! Compare TAG
+
+/* DTLB ** ICACHE line 2: TSB compare and TLB load	*/
+	bne,pn	%xcc, tsb_miss_dtlb		! Miss
+	 mov	FAULT_CODE_DTLB, %g3
+	stxa	%g5, [%g0] ASI_DTLB_DATA_IN	! Load TLB
+	retry					! Trap done
+	nop
+	nop
+	nop
+	nop
+
+/* DTLB ** ICACHE line 3:				*/
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+/* DTLB ** ICACHE line 4: 				*/
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
diff --git a/arch/sparc/kernel/dtlb_prot.S b/arch/sparc/kernel/dtlb_prot.S
new file mode 100644
index 000000000000..b2c2c5be281c
--- /dev/null
+++ b/arch/sparc/kernel/dtlb_prot.S
@@ -0,0 +1,54 @@
+/*
+ * dtlb_prot.S: DTLB protection trap strategy.
+ *              This is included directly into the trap table.
+ *
+ * Copyright (C) 1996,1998 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1997,1998 Jakub Jelinek   (jj@ultra.linux.cz)
+ */
+
+/* Ways we can get here:
+ *
+ * [TL == 0] 1) User stores to readonly pages.
+ * [TL == 0] 2) Nucleus stores to user readonly pages.
+ * [TL >  0] 3) Nucleus stores to user readonly stack frame.
+ */
+
+/* PROT ** ICACHE line 1: User DTLB protection trap	*/
+	mov		TLB_SFSR, %g1
+	stxa		%g0, [%g1] ASI_DMMU		! Clear FaultValid bit
+	membar		#Sync				! Synchronize stores
+	rdpr		%pstate, %g5			! Move into alt-globals
+	wrpr		%g5, PSTATE_AG|PSTATE_MG, %pstate
+	rdpr		%tl, %g1			! Need a winfixup?
+	cmp		%g1, 1				! Trap level >1?
+	mov		TLB_TAG_ACCESS, %g4		! For reload of vaddr
+
+/* PROT ** ICACHE line 2: More real fault processing */
+	bgu,pn		%xcc, winfix_trampoline		! Yes, perform winfixup
+	 ldxa		[%g4] ASI_DMMU, %g5		! Put tagaccess in %g5
+	ba,pt		%xcc, sparc64_realfault_common	! Nope, normal fault
+	 mov		FAULT_CODE_DTLB | FAULT_CODE_WRITE, %g4
+	nop
+	nop
+	nop
+	nop
+
+/* PROT ** ICACHE line 3: Unused...	*/
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+/* PROT ** ICACHE line 4: Unused...	*/
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c
new file mode 100644
index 000000000000..77dbf6d45faf
--- /dev/null
+++ b/arch/sparc/kernel/ebus.c
@@ -0,0 +1,257 @@
+/* ebus.c: EBUS DMA library code.
+ *
+ * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
+ * Copyright (C) 1999  David S. Miller (davem@redhat.com)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+
+#include <asm/ebus_dma.h>
+#include <asm/io.h>
+
+#define EBDMA_CSR	0x00UL	/* Control/Status */
+#define EBDMA_ADDR	0x04UL	/* DMA Address */
+#define EBDMA_COUNT	0x08UL	/* DMA Count */
+
+#define EBDMA_CSR_INT_PEND	0x00000001
+#define EBDMA_CSR_ERR_PEND	0x00000002
+#define EBDMA_CSR_DRAIN		0x00000004
+#define EBDMA_CSR_INT_EN	0x00000010
+#define EBDMA_CSR_RESET		0x00000080
+#define EBDMA_CSR_WRITE		0x00000100
+#define EBDMA_CSR_EN_DMA	0x00000200
+#define EBDMA_CSR_CYC_PEND	0x00000400
+#define EBDMA_CSR_DIAG_RD_DONE	0x00000800
+#define EBDMA_CSR_DIAG_WR_DONE	0x00001000
+#define EBDMA_CSR_EN_CNT	0x00002000
+#define EBDMA_CSR_TC		0x00004000
+#define EBDMA_CSR_DIS_CSR_DRN	0x00010000
+#define EBDMA_CSR_BURST_SZ_MASK	0x000c0000
+#define EBDMA_CSR_BURST_SZ_1	0x00080000
+#define EBDMA_CSR_BURST_SZ_4	0x00000000
+#define EBDMA_CSR_BURST_SZ_8	0x00040000
+#define EBDMA_CSR_BURST_SZ_16	0x000c0000
+#define EBDMA_CSR_DIAG_EN	0x00100000
+#define EBDMA_CSR_DIS_ERR_PEND	0x00400000
+#define EBDMA_CSR_TCI_DIS	0x00800000
+#define EBDMA_CSR_EN_NEXT	0x01000000
+#define EBDMA_CSR_DMA_ON	0x02000000
+#define EBDMA_CSR_A_LOADED	0x04000000
+#define EBDMA_CSR_NA_LOADED	0x08000000
+#define EBDMA_CSR_DEV_ID_MASK	0xf0000000
+
+#define EBUS_DMA_RESET_TIMEOUT	10000
+
+static void __ebus_dma_reset(struct ebus_dma_info *p, int no_drain)
+{
+	int i;
+	u32 val = 0;
+
+	writel(EBDMA_CSR_RESET, p->regs + EBDMA_CSR);
+	udelay(1);
+
+	if (no_drain)
+		return;
+
+	for (i = EBUS_DMA_RESET_TIMEOUT; i > 0; i--) {
+		val = readl(p->regs + EBDMA_CSR);
+
+		if (!(val & (EBDMA_CSR_DRAIN | EBDMA_CSR_CYC_PEND)))
+			break;
+		udelay(10);
+	}
+}
+
+static irqreturn_t ebus_dma_irq(int irq, void *dev_id)
+{
+	struct ebus_dma_info *p = dev_id;
+	unsigned long flags;
+	u32 csr = 0;
+
+	spin_lock_irqsave(&p->lock, flags);
+	csr = readl(p->regs + EBDMA_CSR);
+	writel(csr, p->regs + EBDMA_CSR);
+	spin_unlock_irqrestore(&p->lock, flags);
+
+	if (csr & EBDMA_CSR_ERR_PEND) {
+		printk(KERN_CRIT "ebus_dma(%s): DMA error!\n", p->name);
+		p->callback(p, EBUS_DMA_EVENT_ERROR, p->client_cookie);
+		return IRQ_HANDLED;
+	} else if (csr & EBDMA_CSR_INT_PEND) {
+		p->callback(p,
+			    (csr & EBDMA_CSR_TC) ?
+			    EBUS_DMA_EVENT_DMA : EBUS_DMA_EVENT_DEVICE,
+			    p->client_cookie);
+		return IRQ_HANDLED;
+	}
+
+	return IRQ_NONE;
+
+}
+
+int ebus_dma_register(struct ebus_dma_info *p)
+{
+	u32 csr;
+
+	if (!p->regs)
+		return -EINVAL;
+	if (p->flags & ~(EBUS_DMA_FLAG_USE_EBDMA_HANDLER |
+			 EBUS_DMA_FLAG_TCI_DISABLE))
+		return -EINVAL;
+	if ((p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) && !p->callback)
+		return -EINVAL;
+	if (!strlen(p->name))
+		return -EINVAL;
+
+	__ebus_dma_reset(p, 1);
+
+	csr = EBDMA_CSR_BURST_SZ_16 | EBDMA_CSR_EN_CNT;
+
+	if (p->flags & EBUS_DMA_FLAG_TCI_DISABLE)
+		csr |= EBDMA_CSR_TCI_DIS;
+
+	writel(csr, p->regs + EBDMA_CSR);
+
+	return 0;
+}
+EXPORT_SYMBOL(ebus_dma_register);
+
+int ebus_dma_irq_enable(struct ebus_dma_info *p, int on)
+{
+	unsigned long flags;
+	u32 csr;
+
+	if (on) {
+		if (p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) {
+			if (request_irq(p->irq, ebus_dma_irq, IRQF_SHARED, p->name, p))
+				return -EBUSY;
+		}
+
+		spin_lock_irqsave(&p->lock, flags);
+		csr = readl(p->regs + EBDMA_CSR);
+		csr |= EBDMA_CSR_INT_EN;
+		writel(csr, p->regs + EBDMA_CSR);
+		spin_unlock_irqrestore(&p->lock, flags);
+	} else {
+		spin_lock_irqsave(&p->lock, flags);
+		csr = readl(p->regs + EBDMA_CSR);
+		csr &= ~EBDMA_CSR_INT_EN;
+		writel(csr, p->regs + EBDMA_CSR);
+		spin_unlock_irqrestore(&p->lock, flags);
+
+		if (p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) {
+			free_irq(p->irq, p);
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(ebus_dma_irq_enable);
+
+void ebus_dma_unregister(struct ebus_dma_info *p)
+{
+	unsigned long flags;
+	u32 csr;
+	int irq_on = 0;
+
+	spin_lock_irqsave(&p->lock, flags);
+	csr = readl(p->regs + EBDMA_CSR);
+	if (csr & EBDMA_CSR_INT_EN) {
+		csr &= ~EBDMA_CSR_INT_EN;
+		writel(csr, p->regs + EBDMA_CSR);
+		irq_on = 1;
+	}
+	spin_unlock_irqrestore(&p->lock, flags);
+
+	if (irq_on)
+		free_irq(p->irq, p);
+}
+EXPORT_SYMBOL(ebus_dma_unregister);
+
+int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr, size_t len)
+{
+	unsigned long flags;
+	u32 csr;
+	int err;
+
+	if (len >= (1 << 24))
+		return -EINVAL;
+
+	spin_lock_irqsave(&p->lock, flags);
+	csr = readl(p->regs + EBDMA_CSR);
+	err = -EINVAL;
+	if (!(csr & EBDMA_CSR_EN_DMA))
+		goto out;
+	err = -EBUSY;
+	if (csr & EBDMA_CSR_NA_LOADED)
+		goto out;
+
+	writel(len,      p->regs + EBDMA_COUNT);
+	writel(bus_addr, p->regs + EBDMA_ADDR);
+	err = 0;
+
+out:
+	spin_unlock_irqrestore(&p->lock, flags);
+
+	return err;
+}
+EXPORT_SYMBOL(ebus_dma_request);
+
+void ebus_dma_prepare(struct ebus_dma_info *p, int write)
+{
+	unsigned long flags;
+	u32 csr;
+
+	spin_lock_irqsave(&p->lock, flags);
+	__ebus_dma_reset(p, 0);
+
+	csr = (EBDMA_CSR_INT_EN |
+	       EBDMA_CSR_EN_CNT |
+	       EBDMA_CSR_BURST_SZ_16 |
+	       EBDMA_CSR_EN_NEXT);
+
+	if (write)
+		csr |= EBDMA_CSR_WRITE;
+	if (p->flags & EBUS_DMA_FLAG_TCI_DISABLE)
+		csr |= EBDMA_CSR_TCI_DIS;
+
+	writel(csr, p->regs + EBDMA_CSR);
+
+	spin_unlock_irqrestore(&p->lock, flags);
+}
+EXPORT_SYMBOL(ebus_dma_prepare);
+
+unsigned int ebus_dma_residue(struct ebus_dma_info *p)
+{
+	return readl(p->regs + EBDMA_COUNT);
+}
+EXPORT_SYMBOL(ebus_dma_residue);
+
+unsigned int ebus_dma_addr(struct ebus_dma_info *p)
+{
+	return readl(p->regs + EBDMA_ADDR);
+}
+EXPORT_SYMBOL(ebus_dma_addr);
+
+void ebus_dma_enable(struct ebus_dma_info *p, int on)
+{
+	unsigned long flags;
+	u32 orig_csr, csr;
+
+	spin_lock_irqsave(&p->lock, flags);
+	orig_csr = csr = readl(p->regs + EBDMA_CSR);
+	if (on)
+		csr |= EBDMA_CSR_EN_DMA;
+	else
+		csr &= ~EBDMA_CSR_EN_DMA;
+	if ((orig_csr & EBDMA_CSR_EN_DMA) !=
+	    (csr & EBDMA_CSR_EN_DMA))
+		writel(csr, p->regs + EBDMA_CSR);
+	spin_unlock_irqrestore(&p->lock, flags);
+}
+EXPORT_SYMBOL(ebus_dma_enable);
diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h
new file mode 100644
index 000000000000..4f53a2395ac6
--- /dev/null
+++ b/arch/sparc/kernel/entry.h
@@ -0,0 +1,229 @@
+#ifndef _ENTRY_H
+#define _ENTRY_H
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+
+/* irq */
+extern void handler_irq(int irq, struct pt_regs *regs);
+
+#ifdef CONFIG_SPARC32
+/* traps */
+extern void do_hw_interrupt(struct pt_regs *regs, unsigned long type);
+extern void do_illegal_instruction(struct pt_regs *regs, unsigned long pc,
+                                   unsigned long npc, unsigned long psr);
+
+extern void do_priv_instruction(struct pt_regs *regs, unsigned long pc,
+                                unsigned long npc, unsigned long psr);
+extern void do_memaccess_unaligned(struct pt_regs *regs, unsigned long pc,
+                                   unsigned long npc,
+                                   unsigned long psr);
+extern void do_fpd_trap(struct pt_regs *regs, unsigned long pc,
+                        unsigned long npc, unsigned long psr);
+extern void do_fpe_trap(struct pt_regs *regs, unsigned long pc,
+                        unsigned long npc, unsigned long psr);
+extern void handle_tag_overflow(struct pt_regs *regs, unsigned long pc,
+                                unsigned long npc, unsigned long psr);
+extern void handle_watchpoint(struct pt_regs *regs, unsigned long pc,
+                              unsigned long npc, unsigned long psr);
+extern void handle_reg_access(struct pt_regs *regs, unsigned long pc,
+                              unsigned long npc, unsigned long psr);
+extern void handle_cp_disabled(struct pt_regs *regs, unsigned long pc,
+                               unsigned long npc, unsigned long psr);
+extern void handle_cp_exception(struct pt_regs *regs, unsigned long pc,
+                                unsigned long npc, unsigned long psr);
+
+
+
+/* entry.S */
+extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
+                   void *fpqueue, unsigned long *fpqdepth);
+extern void fpload(unsigned long *fpregs, unsigned long *fsr);
+
+#else /* CONFIG_SPARC32 */
+extern void __init per_cpu_patch(void);
+extern void __init sun4v_patch(void);
+extern void __init boot_cpu_id_too_large(int cpu);
+extern unsigned int dcache_parity_tl1_occurred;
+extern unsigned int icache_parity_tl1_occurred;
+
+extern asmlinkage void update_perfctrs(void);
+extern asmlinkage void sparc_breakpoint(struct pt_regs *regs);
+extern void timer_interrupt(int irq, struct pt_regs *regs);
+
+extern void do_notify_resume(struct pt_regs *regs,
+			     unsigned long orig_i0,
+			     unsigned long thread_info_flags);
+
+extern asmlinkage int syscall_trace_enter(struct pt_regs *regs);
+extern asmlinkage void syscall_trace_leave(struct pt_regs *regs);
+
+extern void bad_trap_tl1(struct pt_regs *regs, long lvl);
+
+extern void do_fpe_common(struct pt_regs *regs);
+extern void do_fpieee(struct pt_regs *regs);
+extern void do_fpother(struct pt_regs *regs);
+extern void do_tof(struct pt_regs *regs);
+extern void do_div0(struct pt_regs *regs);
+extern void do_illegal_instruction(struct pt_regs *regs);
+extern void mem_address_unaligned(struct pt_regs *regs,
+				  unsigned long sfar,
+				  unsigned long sfsr);
+extern void sun4v_do_mna(struct pt_regs *regs,
+			 unsigned long addr,
+			 unsigned long type_ctx);
+extern void do_privop(struct pt_regs *regs);
+extern void do_privact(struct pt_regs *regs);
+extern void do_cee(struct pt_regs *regs);
+extern void do_cee_tl1(struct pt_regs *regs);
+extern void do_dae_tl1(struct pt_regs *regs);
+extern void do_iae_tl1(struct pt_regs *regs);
+extern void do_div0_tl1(struct pt_regs *regs);
+extern void do_fpdis_tl1(struct pt_regs *regs);
+extern void do_fpieee_tl1(struct pt_regs *regs);
+extern void do_fpother_tl1(struct pt_regs *regs);
+extern void do_ill_tl1(struct pt_regs *regs);
+extern void do_irq_tl1(struct pt_regs *regs);
+extern void do_lddfmna_tl1(struct pt_regs *regs);
+extern void do_stdfmna_tl1(struct pt_regs *regs);
+extern void do_paw(struct pt_regs *regs);
+extern void do_paw_tl1(struct pt_regs *regs);
+extern void do_vaw(struct pt_regs *regs);
+extern void do_vaw_tl1(struct pt_regs *regs);
+extern void do_tof_tl1(struct pt_regs *regs);
+extern void do_getpsr(struct pt_regs *regs);
+
+extern void spitfire_insn_access_exception(struct pt_regs *regs,
+					   unsigned long sfsr,
+					   unsigned long sfar);
+extern void spitfire_insn_access_exception_tl1(struct pt_regs *regs,
+					       unsigned long sfsr,
+					       unsigned long sfar);
+extern void spitfire_data_access_exception(struct pt_regs *regs,
+					   unsigned long sfsr,
+					   unsigned long sfar);
+extern void spitfire_data_access_exception_tl1(struct pt_regs *regs,
+					       unsigned long sfsr,
+					       unsigned long sfar);
+extern void spitfire_access_error(struct pt_regs *regs,
+				  unsigned long status_encoded,
+				  unsigned long afar);
+
+extern void cheetah_fecc_handler(struct pt_regs *regs,
+				 unsigned long afsr,
+				 unsigned long afar);
+extern void cheetah_cee_handler(struct pt_regs *regs,
+				unsigned long afsr,
+				unsigned long afar);
+extern void cheetah_deferred_handler(struct pt_regs *regs,
+				     unsigned long afsr,
+				     unsigned long afar);
+extern void cheetah_plus_parity_error(int type, struct pt_regs *regs);
+
+extern void sun4v_insn_access_exception(struct pt_regs *regs,
+					unsigned long addr,
+					unsigned long type_ctx);
+extern void sun4v_insn_access_exception_tl1(struct pt_regs *regs,
+					    unsigned long addr,
+					    unsigned long type_ctx);
+extern void sun4v_data_access_exception(struct pt_regs *regs,
+					unsigned long addr,
+					unsigned long type_ctx);
+extern void sun4v_data_access_exception_tl1(struct pt_regs *regs,
+					    unsigned long addr,
+					    unsigned long type_ctx);
+extern void sun4v_resum_error(struct pt_regs *regs,
+			      unsigned long offset);
+extern void sun4v_resum_overflow(struct pt_regs *regs);
+extern void sun4v_nonresum_error(struct pt_regs *regs,
+				 unsigned long offset);
+extern void sun4v_nonresum_overflow(struct pt_regs *regs);
+
+extern unsigned long sun4v_err_itlb_vaddr;
+extern unsigned long sun4v_err_itlb_ctx;
+extern unsigned long sun4v_err_itlb_pte;
+extern unsigned long sun4v_err_itlb_error;
+
+extern void sun4v_itlb_error_report(struct pt_regs *regs, int tl);
+
+extern unsigned long sun4v_err_dtlb_vaddr;
+extern unsigned long sun4v_err_dtlb_ctx;
+extern unsigned long sun4v_err_dtlb_pte;
+extern unsigned long sun4v_err_dtlb_error;
+
+extern void sun4v_dtlb_error_report(struct pt_regs *regs, int tl);
+extern void hypervisor_tlbop_error(unsigned long err,
+				   unsigned long op);
+extern void hypervisor_tlbop_error_xcall(unsigned long err,
+					 unsigned long op);
+
+/* WARNING: The error trap handlers in assembly know the precise
+ *	    layout of the following structure.
+ *
+ * C-level handlers in traps.c use this information to log the
+ * error and then determine how to recover (if possible).
+ */
+struct cheetah_err_info {
+/*0x00*/u64 afsr;
+/*0x08*/u64 afar;
+
+	/* D-cache state */
+/*0x10*/u64 dcache_data[4];	/* The actual data	*/
+/*0x30*/u64 dcache_index;	/* D-cache index	*/
+/*0x38*/u64 dcache_tag;		/* D-cache tag/valid	*/
+/*0x40*/u64 dcache_utag;	/* D-cache microtag	*/
+/*0x48*/u64 dcache_stag;	/* D-cache snooptag	*/
+
+	/* I-cache state */
+/*0x50*/u64 icache_data[8];	/* The actual insns + predecode	*/
+/*0x90*/u64 icache_index;	/* I-cache index	*/
+/*0x98*/u64 icache_tag;		/* I-cache phys tag	*/
+/*0xa0*/u64 icache_utag;	/* I-cache microtag	*/
+/*0xa8*/u64 icache_stag;	/* I-cache snooptag	*/
+/*0xb0*/u64 icache_upper;	/* I-cache upper-tag	*/
+/*0xb8*/u64 icache_lower;	/* I-cache lower-tag	*/
+
+	/* E-cache state */
+/*0xc0*/u64 ecache_data[4];	/* 32 bytes from staging registers */
+/*0xe0*/u64 ecache_index;	/* E-cache index	*/
+/*0xe8*/u64 ecache_tag;		/* E-cache tag/state	*/
+
+/*0xf0*/u64 __pad[32 - 30];
+};
+#define CHAFSR_INVALID		((u64)-1L)
+
+/* This is allocated at boot time based upon the largest hardware
+ * cpu ID in the system.  We allocate two entries per cpu, one for
+ * TL==0 logging and one for TL >= 1 logging.
+ */
+extern struct cheetah_err_info *cheetah_error_log;
+
+/* UPA nodes send interrupt packet to UltraSparc with first data reg
+ * value low 5 (7 on Starfire) bits holding the IRQ identifier being
+ * delivered.  We must translate this into a non-vector IRQ so we can
+ * set the softint on this cpu.
+ *
+ * To make processing these packets efficient and race free we use
+ * an array of irq buckets below.  The interrupt vector handler in
+ * entry.S feeds incoming packets into per-cpu pil-indexed lists.
+ *
+ * If you make changes to ino_bucket, please update hand coded assembler
+ * of the vectored interrupt trap handler(s) in entry.S and sun4v_ivec.S
+ */
+struct ino_bucket {
+/*0x00*/unsigned long __irq_chain_pa;
+
+	/* Virtual interrupt number assigned to this INO.  */
+/*0x08*/unsigned int __virt_irq;
+/*0x0c*/unsigned int __pad;
+};
+
+extern struct ino_bucket *ivector_table;
+extern unsigned long ivector_table_pa;
+
+extern void init_irqwork_curcpu(void);
+extern void __cpuinit sun4v_register_mondo_queues(int this_cpu);
+
+#endif /* CONFIG_SPARC32 */
+#endif /* _ENTRY_H */
diff --git a/arch/sparc/kernel/etrap.S b/arch/sparc/kernel/etrap_32.S
index e806fcdc46db..e806fcdc46db 100644
--- a/arch/sparc/kernel/etrap.S
+++ b/arch/sparc/kernel/etrap_32.S
diff --git a/arch/sparc/kernel/etrap_64.S b/arch/sparc/kernel/etrap_64.S
new file mode 100644
index 000000000000..786b185e6e3f
--- /dev/null
+++ b/arch/sparc/kernel/etrap_64.S
@@ -0,0 +1,236 @@
+/*
+ * etrap.S: Preparing for entry into the kernel on Sparc V9.
+ *
+ * Copyright (C) 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+
+#include <asm/asi.h>
+#include <asm/pstate.h>
+#include <asm/ptrace.h>
+#include <asm/page.h>
+#include <asm/spitfire.h>
+#include <asm/head.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+
+#define		TASK_REGOFF		(THREAD_SIZE-TRACEREG_SZ-STACKFRAME_SZ)
+#define		ETRAP_PSTATE1		(PSTATE_TSO | PSTATE_PRIV)
+#define		ETRAP_PSTATE2		\
+		(PSTATE_TSO | PSTATE_PEF | PSTATE_PRIV | PSTATE_IE)
+
+/*
+ * On entry, %g7 is return address - 0x4.
+ * %g4 and %g5 will be preserved %l4 and %l5 respectively.
+ */
+
+		.text		
+		.align	64
+		.globl	etrap_syscall, etrap, etrap_irq, etraptl1
+etrap:		rdpr	%pil, %g2
+etrap_irq:	clr	%g3
+etrap_syscall:	TRAP_LOAD_THREAD_REG(%g6, %g1)
+		rdpr	%tstate, %g1
+		or	%g1, %g3, %g1
+		sllx	%g2, 20, %g3
+		andcc	%g1, TSTATE_PRIV, %g0
+		or	%g1, %g3, %g1
+		bne,pn	%xcc, 1f
+		 sub	%sp, STACKFRAME_SZ+TRACEREG_SZ-STACK_BIAS, %g2
+		wrpr	%g0, 7, %cleanwin
+
+		sethi	%hi(TASK_REGOFF), %g2
+		sethi	%hi(TSTATE_PEF), %g3
+		or	%g2, %lo(TASK_REGOFF), %g2
+		and	%g1, %g3, %g3
+		brnz,pn	%g3, 1f
+		 add	%g6, %g2, %g2
+		wr	%g0, 0, %fprs
+1:		rdpr	%tpc, %g3
+
+		stx	%g1, [%g2 + STACKFRAME_SZ + PT_V9_TSTATE]
+		rdpr	%tnpc, %g1
+		stx	%g3, [%g2 + STACKFRAME_SZ + PT_V9_TPC]
+		rd	%y, %g3
+		stx	%g1, [%g2 + STACKFRAME_SZ + PT_V9_TNPC]
+		rdpr	%tt, %g1
+		st	%g3, [%g2 + STACKFRAME_SZ + PT_V9_Y]
+		sethi	%hi(PT_REGS_MAGIC), %g3
+		or	%g3, %g1, %g1
+		st	%g1, [%g2 + STACKFRAME_SZ + PT_V9_MAGIC]
+
+		rdpr	%cansave, %g1
+		brnz,pt %g1, etrap_save
+		 nop
+
+		rdpr	%cwp, %g1
+		add	%g1, 2, %g1
+		wrpr	%g1, %cwp
+		be,pt	%xcc, etrap_user_spill
+		 mov	ASI_AIUP, %g3
+
+		rdpr	%otherwin, %g3
+		brz	%g3, etrap_kernel_spill
+		 mov	ASI_AIUS, %g3
+
+etrap_user_spill:
+
+		wr	%g3, 0x0, %asi
+		ldx	[%g6 + TI_FLAGS], %g3
+		and	%g3, _TIF_32BIT, %g3
+		brnz,pt	%g3, etrap_user_spill_32bit
+		 nop
+		ba,a,pt	%xcc, etrap_user_spill_64bit
+
+etrap_save:	save	%g2, -STACK_BIAS, %sp
+		mov	%g6, %l6
+
+		bne,pn	%xcc, 3f
+		 mov	PRIMARY_CONTEXT, %l4
+		rdpr	%canrestore, %g3
+		rdpr	%wstate, %g2
+		wrpr	%g0, 0, %canrestore
+		sll	%g2, 3, %g2
+		mov	1, %l5
+		stb	%l5, [%l6 + TI_FPDEPTH]
+
+		wrpr	%g3, 0, %otherwin
+		wrpr	%g2, 0, %wstate
+		sethi	%hi(sparc64_kern_pri_context), %g2
+		ldx	[%g2 + %lo(sparc64_kern_pri_context)], %g3
+
+661:		stxa	%g3, [%l4] ASI_DMMU
+		.section .sun4v_1insn_patch, "ax"
+		.word	661b
+		stxa	%g3, [%l4] ASI_MMU
+		.previous
+
+		sethi	%hi(KERNBASE), %l4
+		flush	%l4
+		mov	ASI_AIUS, %l7
+2:		mov	%g4, %l4
+		mov	%g5, %l5
+		add	%g7, 4, %l2
+
+		/* Go to trap time globals so we can save them.  */
+661:		wrpr	%g0, ETRAP_PSTATE1, %pstate
+		.section .sun4v_1insn_patch, "ax"
+		.word	661b
+		SET_GL(0)
+		.previous
+
+		stx	%g1, [%sp + PTREGS_OFF + PT_V9_G1]
+		stx	%g2, [%sp + PTREGS_OFF + PT_V9_G2]
+		sllx	%l7, 24, %l7
+		stx	%g3, [%sp + PTREGS_OFF + PT_V9_G3]
+		rdpr	%cwp, %l0
+		stx	%g4, [%sp + PTREGS_OFF + PT_V9_G4]
+		stx	%g5, [%sp + PTREGS_OFF + PT_V9_G5]
+		stx	%g6, [%sp + PTREGS_OFF + PT_V9_G6]
+		stx	%g7, [%sp + PTREGS_OFF + PT_V9_G7]
+		or	%l7, %l0, %l7
+		sethi	%hi(TSTATE_TSO | TSTATE_PEF), %l0
+		or	%l7, %l0, %l7
+		wrpr	%l2, %tnpc
+		wrpr	%l7, (TSTATE_PRIV | TSTATE_IE), %tstate
+		stx	%i0, [%sp + PTREGS_OFF + PT_V9_I0]
+		stx	%i1, [%sp + PTREGS_OFF + PT_V9_I1]
+		stx	%i2, [%sp + PTREGS_OFF + PT_V9_I2]
+		stx	%i3, [%sp + PTREGS_OFF + PT_V9_I3]
+		stx	%i4, [%sp + PTREGS_OFF + PT_V9_I4]
+		stx	%i5, [%sp + PTREGS_OFF + PT_V9_I5]
+		stx	%i6, [%sp + PTREGS_OFF + PT_V9_I6]
+		mov	%l6, %g6
+		stx	%i7, [%sp + PTREGS_OFF + PT_V9_I7]
+		LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %l1)
+		ldx	[%g6 + TI_TASK], %g4
+		done
+
+3:		mov	ASI_P, %l7
+		ldub	[%l6 + TI_FPDEPTH], %l5
+		add	%l6, TI_FPSAVED + 1, %l4
+		srl	%l5, 1, %l3
+		add	%l5, 2, %l5
+		stb	%l5, [%l6 + TI_FPDEPTH]
+		ba,pt	%xcc, 2b
+		 stb	%g0, [%l4 + %l3]
+		nop
+
+etraptl1:	/* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself.
+		 * We place this right after pt_regs on the trap stack.
+		 * The layout is:
+		 *	0x00	TL1's TSTATE
+		 *	0x08	TL1's TPC
+		 *	0x10	TL1's TNPC
+		 *	0x18	TL1's TT
+		 *	 ...
+		 *	0x58	TL4's TT
+		 *	0x60	TL
+		 */
+		TRAP_LOAD_THREAD_REG(%g6, %g1)
+		sub	%sp, ((4 * 8) * 4) + 8, %g2
+		rdpr	%tl, %g1
+
+		wrpr	%g0, 1, %tl
+		rdpr	%tstate, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x00]
+		rdpr	%tpc, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x08]
+		rdpr	%tnpc, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x10]
+		rdpr	%tt, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x18]
+
+		wrpr	%g0, 2, %tl
+		rdpr	%tstate, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x20]
+		rdpr	%tpc, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x28]
+		rdpr	%tnpc, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x30]
+		rdpr	%tt, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x38]
+
+		sethi	%hi(is_sun4v), %g3
+		lduw	[%g3 + %lo(is_sun4v)], %g3
+		brnz,pn	%g3, finish_tl1_capture
+		 nop
+
+		wrpr	%g0, 3, %tl
+		rdpr	%tstate, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x40]
+		rdpr	%tpc, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x48]
+		rdpr	%tnpc, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x50]
+		rdpr	%tt, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x58]
+
+		wrpr	%g0, 4, %tl
+		rdpr	%tstate, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x60]
+		rdpr	%tpc, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x68]
+		rdpr	%tnpc, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x70]
+		rdpr	%tt, %g3
+		stx	%g3, [%g2 + STACK_BIAS + 0x78]
+
+		stx	%g1, [%g2 + STACK_BIAS + 0x80]
+
+finish_tl1_capture:
+		wrpr	%g0, 1, %tl
+661:		nop
+		.section .sun4v_1insn_patch, "ax"
+		.word	661b
+		SET_GL(1)
+		.previous
+
+		rdpr	%tstate, %g1
+		sub	%g2, STACKFRAME_SZ + TRACEREG_SZ - STACK_BIAS, %g2
+		ba,pt	%xcc, 1b
+		 andcc	%g1, TSTATE_PRIV, %g0
+
+#undef TASK_REGOFF
+#undef ETRAP_PSTATE1
diff --git a/arch/sparc/kernel/fpu_traps.S b/arch/sparc/kernel/fpu_traps.S
new file mode 100644
index 000000000000..a6864826a4bd
--- /dev/null
+++ b/arch/sparc/kernel/fpu_traps.S
@@ -0,0 +1,384 @@
+	/* This is trivial with the new code... */
+	.globl		do_fpdis
+	.type		do_fpdis,#function
+do_fpdis:
+	sethi		%hi(TSTATE_PEF), %g4
+	rdpr		%tstate, %g5
+	andcc		%g5, %g4, %g0
+	be,pt		%xcc, 1f
+	 nop
+	rd		%fprs, %g5
+	andcc		%g5, FPRS_FEF, %g0
+	be,pt		%xcc, 1f
+	 nop
+
+	/* Legal state when DCR_IFPOE is set in Cheetah %dcr. */
+	sethi		%hi(109f), %g7
+	ba,pt		%xcc, etrap
+109:	 or		%g7, %lo(109b), %g7
+	add		%g0, %g0, %g0
+	ba,a,pt		%xcc, rtrap
+
+1:	TRAP_LOAD_THREAD_REG(%g6, %g1)
+	ldub		[%g6 + TI_FPSAVED], %g5
+	wr		%g0, FPRS_FEF, %fprs
+	andcc		%g5, FPRS_FEF, %g0
+	be,a,pt		%icc, 1f
+	 clr		%g7
+	ldx		[%g6 + TI_GSR], %g7
+1:	andcc		%g5, FPRS_DL, %g0
+	bne,pn		%icc, 2f
+	 fzero		%f0
+	andcc		%g5, FPRS_DU, %g0
+	bne,pn		%icc, 1f
+	 fzero		%f2
+	faddd		%f0, %f2, %f4
+	fmuld		%f0, %f2, %f6
+	faddd		%f0, %f2, %f8
+	fmuld		%f0, %f2, %f10
+	faddd		%f0, %f2, %f12
+	fmuld		%f0, %f2, %f14
+	faddd		%f0, %f2, %f16
+	fmuld		%f0, %f2, %f18
+	faddd		%f0, %f2, %f20
+	fmuld		%f0, %f2, %f22
+	faddd		%f0, %f2, %f24
+	fmuld		%f0, %f2, %f26
+	faddd		%f0, %f2, %f28
+	fmuld		%f0, %f2, %f30
+	faddd		%f0, %f2, %f32
+	fmuld		%f0, %f2, %f34
+	faddd		%f0, %f2, %f36
+	fmuld		%f0, %f2, %f38
+	faddd		%f0, %f2, %f40
+	fmuld		%f0, %f2, %f42
+	faddd		%f0, %f2, %f44
+	fmuld		%f0, %f2, %f46
+	faddd		%f0, %f2, %f48
+	fmuld		%f0, %f2, %f50
+	faddd		%f0, %f2, %f52
+	fmuld		%f0, %f2, %f54
+	faddd		%f0, %f2, %f56
+	fmuld		%f0, %f2, %f58
+	b,pt		%xcc, fpdis_exit2
+	 faddd		%f0, %f2, %f60
+1:	mov		SECONDARY_CONTEXT, %g3
+	add		%g6, TI_FPREGS + 0x80, %g1
+	faddd		%f0, %f2, %f4
+	fmuld		%f0, %f2, %f6
+
+661:	ldxa		[%g3] ASI_DMMU, %g5
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	ldxa		[%g3] ASI_MMU, %g5
+	.previous
+
+	sethi		%hi(sparc64_kern_sec_context), %g2
+	ldx		[%g2 + %lo(sparc64_kern_sec_context)], %g2
+
+661:	stxa		%g2, [%g3] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g2, [%g3] ASI_MMU
+	.previous
+
+	membar		#Sync
+	add		%g6, TI_FPREGS + 0xc0, %g2
+	faddd		%f0, %f2, %f8
+	fmuld		%f0, %f2, %f10
+	membar		#Sync
+	ldda		[%g1] ASI_BLK_S, %f32
+	ldda		[%g2] ASI_BLK_S, %f48
+	membar		#Sync
+	faddd		%f0, %f2, %f12
+	fmuld		%f0, %f2, %f14
+	faddd		%f0, %f2, %f16
+	fmuld		%f0, %f2, %f18
+	faddd		%f0, %f2, %f20
+	fmuld		%f0, %f2, %f22
+	faddd		%f0, %f2, %f24
+	fmuld		%f0, %f2, %f26
+	faddd		%f0, %f2, %f28
+	fmuld		%f0, %f2, %f30
+	b,pt		%xcc, fpdis_exit
+	 nop
+2:	andcc		%g5, FPRS_DU, %g0
+	bne,pt		%icc, 3f
+	 fzero		%f32
+	mov		SECONDARY_CONTEXT, %g3
+	fzero		%f34
+
+661:	ldxa		[%g3] ASI_DMMU, %g5
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	ldxa		[%g3] ASI_MMU, %g5
+	.previous
+
+	add		%g6, TI_FPREGS, %g1
+	sethi		%hi(sparc64_kern_sec_context), %g2
+	ldx		[%g2 + %lo(sparc64_kern_sec_context)], %g2
+
+661:	stxa		%g2, [%g3] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g2, [%g3] ASI_MMU
+	.previous
+
+	membar		#Sync
+	add		%g6, TI_FPREGS + 0x40, %g2
+	faddd		%f32, %f34, %f36
+	fmuld		%f32, %f34, %f38
+	membar		#Sync
+	ldda		[%g1] ASI_BLK_S, %f0
+	ldda		[%g2] ASI_BLK_S, %f16
+	membar		#Sync
+	faddd		%f32, %f34, %f40
+	fmuld		%f32, %f34, %f42
+	faddd		%f32, %f34, %f44
+	fmuld		%f32, %f34, %f46
+	faddd		%f32, %f34, %f48
+	fmuld		%f32, %f34, %f50
+	faddd		%f32, %f34, %f52
+	fmuld		%f32, %f34, %f54
+	faddd		%f32, %f34, %f56
+	fmuld		%f32, %f34, %f58
+	faddd		%f32, %f34, %f60
+	fmuld		%f32, %f34, %f62
+	ba,pt		%xcc, fpdis_exit
+	 nop
+3:	mov		SECONDARY_CONTEXT, %g3
+	add		%g6, TI_FPREGS, %g1
+
+661:	ldxa		[%g3] ASI_DMMU, %g5
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	ldxa		[%g3] ASI_MMU, %g5
+	.previous
+
+	sethi		%hi(sparc64_kern_sec_context), %g2
+	ldx		[%g2 + %lo(sparc64_kern_sec_context)], %g2
+
+661:	stxa		%g2, [%g3] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g2, [%g3] ASI_MMU
+	.previous
+
+	membar		#Sync
+	mov		0x40, %g2
+	membar		#Sync
+	ldda		[%g1] ASI_BLK_S, %f0
+	ldda		[%g1 + %g2] ASI_BLK_S, %f16
+	add		%g1, 0x80, %g1
+	ldda		[%g1] ASI_BLK_S, %f32
+	ldda		[%g1 + %g2] ASI_BLK_S, %f48
+	membar		#Sync
+fpdis_exit:
+
+661:	stxa		%g5, [%g3] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g5, [%g3] ASI_MMU
+	.previous
+
+	membar		#Sync
+fpdis_exit2:
+	wr		%g7, 0, %gsr
+	ldx		[%g6 + TI_XFSR], %fsr
+	rdpr		%tstate, %g3
+	or		%g3, %g4, %g3		! anal...
+	wrpr		%g3, %tstate
+	wr		%g0, FPRS_FEF, %fprs	! clean DU/DL bits
+	retry
+	.size		do_fpdis,.-do_fpdis
+
+	.align		32
+	.type		fp_other_bounce,#function
+fp_other_bounce:
+	call		do_fpother
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		fp_other_bounce,.-fp_other_bounce
+
+	.align		32
+	.globl		do_fpother_check_fitos
+	.type		do_fpother_check_fitos,#function
+do_fpother_check_fitos:
+	TRAP_LOAD_THREAD_REG(%g6, %g1)
+	sethi		%hi(fp_other_bounce - 4), %g7
+	or		%g7, %lo(fp_other_bounce - 4), %g7
+
+	/* NOTE: Need to preserve %g7 until we fully commit
+	 *       to the fitos fixup.
+	 */
+	stx		%fsr, [%g6 + TI_XFSR]
+	rdpr		%tstate, %g3
+	andcc		%g3, TSTATE_PRIV, %g0
+	bne,pn		%xcc, do_fptrap_after_fsr
+	 nop
+	ldx		[%g6 + TI_XFSR], %g3
+	srlx		%g3, 14, %g1
+	and		%g1, 7, %g1
+	cmp		%g1, 2			! Unfinished FP-OP
+	bne,pn		%xcc, do_fptrap_after_fsr
+	 sethi		%hi(1 << 23), %g1	! Inexact
+	andcc		%g3, %g1, %g0
+	bne,pn		%xcc, do_fptrap_after_fsr
+	 rdpr		%tpc, %g1
+	lduwa		[%g1] ASI_AIUP, %g3	! This cannot ever fail
+#define FITOS_MASK	0xc1f83fe0
+#define FITOS_COMPARE	0x81a01880
+	sethi		%hi(FITOS_MASK), %g1
+	or		%g1, %lo(FITOS_MASK), %g1
+	and		%g3, %g1, %g1
+	sethi		%hi(FITOS_COMPARE), %g2
+	or		%g2, %lo(FITOS_COMPARE), %g2
+	cmp		%g1, %g2
+	bne,pn		%xcc, do_fptrap_after_fsr
+	 nop
+	std		%f62, [%g6 + TI_FPREGS + (62 * 4)]
+	sethi		%hi(fitos_table_1), %g1
+	and		%g3, 0x1f, %g2
+	or		%g1, %lo(fitos_table_1),  %g1
+	sllx		%g2, 2, %g2
+	jmpl		%g1 + %g2, %g0
+	 ba,pt		%xcc, fitos_emul_continue
+
+fitos_table_1:
+	fitod		%f0, %f62
+	fitod		%f1, %f62
+	fitod		%f2, %f62
+	fitod		%f3, %f62
+	fitod		%f4, %f62
+	fitod		%f5, %f62
+	fitod		%f6, %f62
+	fitod		%f7, %f62
+	fitod		%f8, %f62
+	fitod		%f9, %f62
+	fitod		%f10, %f62
+	fitod		%f11, %f62
+	fitod		%f12, %f62
+	fitod		%f13, %f62
+	fitod		%f14, %f62
+	fitod		%f15, %f62
+	fitod		%f16, %f62
+	fitod		%f17, %f62
+	fitod		%f18, %f62
+	fitod		%f19, %f62
+	fitod		%f20, %f62
+	fitod		%f21, %f62
+	fitod		%f22, %f62
+	fitod		%f23, %f62
+	fitod		%f24, %f62
+	fitod		%f25, %f62
+	fitod		%f26, %f62
+	fitod		%f27, %f62
+	fitod		%f28, %f62
+	fitod		%f29, %f62
+	fitod		%f30, %f62
+	fitod		%f31, %f62
+
+fitos_emul_continue:
+	sethi		%hi(fitos_table_2), %g1
+	srl		%g3, 25, %g2
+	or		%g1, %lo(fitos_table_2), %g1
+	and		%g2, 0x1f, %g2
+	sllx		%g2, 2, %g2
+	jmpl		%g1 + %g2, %g0
+	 ba,pt		%xcc, fitos_emul_fini
+
+fitos_table_2:
+	fdtos		%f62, %f0
+	fdtos		%f62, %f1
+	fdtos		%f62, %f2
+	fdtos		%f62, %f3
+	fdtos		%f62, %f4
+	fdtos		%f62, %f5
+	fdtos		%f62, %f6
+	fdtos		%f62, %f7
+	fdtos		%f62, %f8
+	fdtos		%f62, %f9
+	fdtos		%f62, %f10
+	fdtos		%f62, %f11
+	fdtos		%f62, %f12
+	fdtos		%f62, %f13
+	fdtos		%f62, %f14
+	fdtos		%f62, %f15
+	fdtos		%f62, %f16
+	fdtos		%f62, %f17
+	fdtos		%f62, %f18
+	fdtos		%f62, %f19
+	fdtos		%f62, %f20
+	fdtos		%f62, %f21
+	fdtos		%f62, %f22
+	fdtos		%f62, %f23
+	fdtos		%f62, %f24
+	fdtos		%f62, %f25
+	fdtos		%f62, %f26
+	fdtos		%f62, %f27
+	fdtos		%f62, %f28
+	fdtos		%f62, %f29
+	fdtos		%f62, %f30
+	fdtos		%f62, %f31
+
+fitos_emul_fini:
+	ldd		[%g6 + TI_FPREGS + (62 * 4)], %f62
+	done
+	.size		do_fpother_check_fitos,.-do_fpother_check_fitos
+
+	.align		32
+	.globl		do_fptrap
+	.type		do_fptrap,#function
+do_fptrap:
+	TRAP_LOAD_THREAD_REG(%g6, %g1)
+	stx		%fsr, [%g6 + TI_XFSR]
+do_fptrap_after_fsr:
+	ldub		[%g6 + TI_FPSAVED], %g3
+	rd		%fprs, %g1
+	or		%g3, %g1, %g3
+	stb		%g3, [%g6 + TI_FPSAVED]
+	rd		%gsr, %g3
+	stx		%g3, [%g6 + TI_GSR]
+	mov		SECONDARY_CONTEXT, %g3
+
+661:	ldxa		[%g3] ASI_DMMU, %g5
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	ldxa		[%g3] ASI_MMU, %g5
+	.previous
+
+	sethi		%hi(sparc64_kern_sec_context), %g2
+	ldx		[%g2 + %lo(sparc64_kern_sec_context)], %g2
+
+661:	stxa		%g2, [%g3] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g2, [%g3] ASI_MMU
+	.previous
+
+	membar		#Sync
+	add		%g6, TI_FPREGS, %g2
+	andcc		%g1, FPRS_DL, %g0
+	be,pn		%icc, 4f
+	 mov		0x40, %g3
+	stda		%f0, [%g2] ASI_BLK_S
+	stda		%f16, [%g2 + %g3] ASI_BLK_S
+	andcc		%g1, FPRS_DU, %g0
+	be,pn		%icc, 5f
+4:       add		%g2, 128, %g2
+	stda		%f32, [%g2] ASI_BLK_S
+	stda		%f48, [%g2 + %g3] ASI_BLK_S
+5:	mov		SECONDARY_CONTEXT, %g1
+	membar		#Sync
+
+661:	stxa		%g5, [%g1] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g5, [%g1] ASI_MMU
+	.previous
+
+	membar		#Sync
+	ba,pt		%xcc, etrap
+	 wr		%g0, 0, %fprs
+	.size		do_fptrap,.-do_fptrap
diff --git a/arch/sparc/kernel/ftrace.c b/arch/sparc/kernel/ftrace.c
new file mode 100644
index 000000000000..d0218e73f982
--- /dev/null
+++ b/arch/sparc/kernel/ftrace.c
@@ -0,0 +1,76 @@
+#include <linux/spinlock.h>
+#include <linux/hardirq.h>
+#include <linux/ftrace.h>
+#include <linux/percpu.h>
+#include <linux/init.h>
+#include <linux/list.h>
+
+#include <asm/ftrace.h>
+
+static const u32 ftrace_nop = 0x01000000;
+
+unsigned char *ftrace_nop_replace(void)
+{
+	return (char *)&ftrace_nop;
+}
+
+unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
+{
+	static u32 call;
+	s32 off;
+
+	off = ((s32)addr - (s32)ip);
+	call = 0x40000000 | ((u32)off >> 2);
+
+	return (unsigned char *) &call;
+}
+
+int
+ftrace_modify_code(unsigned long ip, unsigned char *old_code,
+		   unsigned char *new_code)
+{
+	u32 old = *(u32 *)old_code;
+	u32 new = *(u32 *)new_code;
+	u32 replaced;
+	int faulted;
+
+	__asm__ __volatile__(
+	"1:	cas	[%[ip]], %[old], %[new]\n"
+	"	flush	%[ip]\n"
+	"	mov	0, %[faulted]\n"
+	"2:\n"
+	"	.section .fixup,#alloc,#execinstr\n"
+	"	.align	4\n"
+	"3:	sethi	%%hi(2b), %[faulted]\n"
+	"	jmpl	%[faulted] + %%lo(2b), %%g0\n"
+	"	 mov	1, %[faulted]\n"
+	"	.previous\n"
+	"	.section __ex_table,\"a\"\n"
+	"	.align	4\n"
+	"	.word	1b, 3b\n"
+	"	.previous\n"
+	: "=r" (replaced), [faulted] "=r" (faulted)
+	: [new] "0" (new), [old] "r" (old), [ip] "r" (ip)
+	: "memory");
+
+	if (replaced != old && replaced != new)
+		faulted = 2;
+
+	return faulted;
+}
+
+int ftrace_update_ftrace_func(ftrace_func_t func)
+{
+	unsigned long ip = (unsigned long)(&ftrace_call);
+	unsigned char old[MCOUNT_INSN_SIZE], *new;
+
+	memcpy(old, &ftrace_call, MCOUNT_INSN_SIZE);
+	new = ftrace_call_replace(ip, (unsigned long)func);
+	return ftrace_modify_code(ip, old, new);
+}
+
+int __init ftrace_dyn_arch_init(void *data)
+{
+	ftrace_mcount_set(data);
+	return 0;
+}
diff --git a/arch/sparc/kernel/getsetcc.S b/arch/sparc/kernel/getsetcc.S
new file mode 100644
index 000000000000..a14d272d2061
--- /dev/null
+++ b/arch/sparc/kernel/getsetcc.S
@@ -0,0 +1,24 @@
+	.globl		getcc
+	.type		getcc,#function
+getcc:
+	ldx		[%o0 + PT_V9_TSTATE], %o1
+	srlx		%o1, 32, %o1
+	and		%o1, 0xf, %o1
+	retl
+	 stx		%o1, [%o0 + PT_V9_G1]
+	.size		getcc,.-getcc
+
+	.globl		setcc
+	.type		setcc,#function
+setcc:
+	ldx		[%o0 + PT_V9_TSTATE], %o1
+	ldx		[%o0 + PT_V9_G1], %o2
+	or		%g0, %ulo(TSTATE_ICC), %o3
+	sllx		%o3, 32, %o3
+	andn		%o1, %o3, %o1
+	sllx		%o2, 32, %o2
+	and		%o2, %o3, %o2
+	or		%o1, %o2, %o1
+	retl
+	 stx		%o1, [%o0 + PT_V9_TSTATE]
+	.size		setcc,.-setcc
diff --git a/arch/sparc/kernel/head.S b/arch/sparc/kernel/head_32.S
index 51b40426f9c6..f0b4b516304f 100644
--- a/arch/sparc/kernel/head.S
+++ b/arch/sparc/kernel/head_32.S
@@ -990,7 +990,7 @@ sun4c_continue_boot:
 
 		/* Zero out our BSS section. */
 		set	__bss_start , %o0	! First address of BSS
-		set	end , %o1		! Last address of BSS
+		set	_end , %o1		! Last address of BSS
 		add	%o0, 0x1, %o0
 1:	
 		stb	%g0, [%o0]
diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S
new file mode 100644
index 000000000000..8ffee714f932
--- /dev/null
+++ b/arch/sparc/kernel/head_64.S
@@ -0,0 +1,900 @@
+/* head.S: Initial boot code for the Sparc64 port of Linux.
+ *
+ * Copyright (C) 1996, 1997, 2007 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996 David Sitsky (David.Sitsky@anu.edu.au)
+ * Copyright (C) 1997, 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ */
+
+#include <linux/version.h>
+#include <linux/errno.h>
+#include <linux/threads.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <asm/thread_info.h>
+#include <asm/asi.h>
+#include <asm/pstate.h>
+#include <asm/ptrace.h>
+#include <asm/spitfire.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/errno.h>
+#include <asm/signal.h>
+#include <asm/processor.h>
+#include <asm/lsu.h>
+#include <asm/dcr.h>
+#include <asm/dcu.h>
+#include <asm/head.h>
+#include <asm/ttable.h>
+#include <asm/mmu.h>
+#include <asm/cpudata.h>
+#include <asm/pil.h>
+#include <asm/estate.h>
+#include <asm/sfafsr.h>
+#include <asm/unistd.h>
+	
+/* This section from from _start to sparc64_boot_end should fit into
+ * 0x0000000000404000 to 0x0000000000408000.
+ */
+	.text
+	.globl	start, _start, stext, _stext
+_start:
+start:
+_stext:
+stext:
+! 0x0000000000404000
+	b	sparc64_boot
+	 flushw					/* Flush register file.      */
+
+/* This stuff has to be in sync with SILO and other potential boot loaders
+ * Fields should be kept upward compatible and whenever any change is made,
+ * HdrS version should be incremented.
+ */
+        .global root_flags, ram_flags, root_dev
+        .global sparc_ramdisk_image, sparc_ramdisk_size
+	.global sparc_ramdisk_image64
+
+        .ascii  "HdrS"
+        .word   LINUX_VERSION_CODE
+
+	/* History:
+	 *
+	 * 0x0300 : Supports being located at other than 0x4000
+	 * 0x0202 : Supports kernel params string
+	 * 0x0201 : Supports reboot_command
+	 */
+	.half   0x0301          /* HdrS version */
+
+root_flags:
+        .half   1
+root_dev:
+        .half   0
+ram_flags:
+        .half   0
+sparc_ramdisk_image:
+        .word   0
+sparc_ramdisk_size:
+        .word   0
+        .xword  reboot_command
+	.xword	bootstr_info
+sparc_ramdisk_image64:
+	.xword	0
+	.word	_end
+
+	/* PROM cif handler code address is in %o4.  */
+sparc64_boot:
+	mov	%o4, %l7
+
+	/* We need to remap the kernel.  Use position independant
+	 * code to remap us to KERNBASE.
+	 *
+	 * SILO can invoke us with 32-bit address masking enabled,
+	 * so make sure that's clear.
+	 */
+	rdpr	%pstate, %g1
+	andn	%g1, PSTATE_AM, %g1
+	wrpr	%g1, 0x0, %pstate
+	ba,a,pt	%xcc, 1f
+
+	.globl	prom_finddev_name, prom_chosen_path, prom_root_node
+	.globl	prom_getprop_name, prom_mmu_name, prom_peer_name
+	.globl	prom_callmethod_name, prom_translate_name, prom_root_compatible
+	.globl	prom_map_name, prom_unmap_name, prom_mmu_ihandle_cache
+	.globl	prom_boot_mapped_pc, prom_boot_mapping_mode
+	.globl	prom_boot_mapping_phys_high, prom_boot_mapping_phys_low
+	.globl	prom_compatible_name, prom_cpu_path, prom_cpu_compatible
+	.globl	is_sun4v, sun4v_chip_type, prom_set_trap_table_name
+prom_peer_name:
+	.asciz	"peer"
+prom_compatible_name:
+	.asciz	"compatible"
+prom_finddev_name:
+	.asciz	"finddevice"
+prom_chosen_path:
+	.asciz	"/chosen"
+prom_cpu_path:
+	.asciz	"/cpu"
+prom_getprop_name:
+	.asciz	"getprop"
+prom_mmu_name:
+	.asciz	"mmu"
+prom_callmethod_name:
+	.asciz	"call-method"
+prom_translate_name:
+	.asciz	"translate"
+prom_map_name:
+	.asciz	"map"
+prom_unmap_name:
+	.asciz	"unmap"
+prom_set_trap_table_name:
+	.asciz	"SUNW,set-trap-table"
+prom_sun4v_name:
+	.asciz	"sun4v"
+prom_niagara_prefix:
+	.asciz	"SUNW,UltraSPARC-T"
+	.align	4
+prom_root_compatible:
+	.skip	64
+prom_cpu_compatible:
+	.skip	64
+prom_root_node:
+	.word	0
+prom_mmu_ihandle_cache:
+	.word	0
+prom_boot_mapped_pc:
+	.word	0
+prom_boot_mapping_mode:
+	.word	0
+	.align	8
+prom_boot_mapping_phys_high:
+	.xword	0
+prom_boot_mapping_phys_low:
+	.xword	0
+is_sun4v:
+	.word	0
+sun4v_chip_type:
+	.word	SUN4V_CHIP_INVALID
+1:
+	rd	%pc, %l0
+
+	mov	(1b - prom_peer_name), %l1
+	sub	%l0, %l1, %l1
+	mov	0, %l2
+
+	/* prom_root_node = prom_peer(0) */
+	stx	%l1, [%sp + 2047 + 128 + 0x00]	! service, "peer"
+	mov	1, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x08]	! num_args, 1
+	stx	%l3, [%sp + 2047 + 128 + 0x10]	! num_rets, 1
+	stx	%l2, [%sp + 2047 + 128 + 0x18]	! arg1, 0
+	stx	%g0, [%sp + 2047 + 128 + 0x20]	! ret1
+	call	%l7
+	 add	%sp, (2047 + 128), %o0		! argument array
+
+	ldx	[%sp + 2047 + 128 + 0x20], %l4	! prom root node
+	mov	(1b - prom_root_node), %l1
+	sub	%l0, %l1, %l1
+	stw	%l4, [%l1]
+
+	mov	(1b - prom_getprop_name), %l1
+	mov	(1b - prom_compatible_name), %l2
+	mov	(1b - prom_root_compatible), %l5
+	sub	%l0, %l1, %l1
+	sub	%l0, %l2, %l2
+	sub	%l0, %l5, %l5
+
+	/* prom_getproperty(prom_root_node, "compatible",
+	 *                  &prom_root_compatible, 64)
+	 */
+	stx	%l1, [%sp + 2047 + 128 + 0x00]	! service, "getprop"
+	mov	4, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x08]	! num_args, 4
+	mov	1, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x10]	! num_rets, 1
+	stx	%l4, [%sp + 2047 + 128 + 0x18]	! arg1, prom_root_node
+	stx	%l2, [%sp + 2047 + 128 + 0x20]	! arg2, "compatible"
+	stx	%l5, [%sp + 2047 + 128 + 0x28]	! arg3, &prom_root_compatible
+	mov	64, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x30]	! arg4, size
+	stx	%g0, [%sp + 2047 + 128 + 0x38]	! ret1
+	call	%l7
+	 add	%sp, (2047 + 128), %o0		! argument array
+
+	mov	(1b - prom_finddev_name), %l1
+	mov	(1b - prom_chosen_path), %l2
+	mov	(1b - prom_boot_mapped_pc), %l3
+	sub	%l0, %l1, %l1
+	sub	%l0, %l2, %l2
+	sub	%l0, %l3, %l3
+	stw	%l0, [%l3]
+	sub	%sp, (192 + 128), %sp
+
+	/* chosen_node = prom_finddevice("/chosen") */
+	stx	%l1, [%sp + 2047 + 128 + 0x00]	! service, "finddevice"
+	mov	1, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x08]	! num_args, 1
+	stx	%l3, [%sp + 2047 + 128 + 0x10]	! num_rets, 1
+	stx	%l2, [%sp + 2047 + 128 + 0x18]	! arg1, "/chosen"
+	stx	%g0, [%sp + 2047 + 128 + 0x20]	! ret1
+	call	%l7
+	 add	%sp, (2047 + 128), %o0		! argument array
+
+	ldx	[%sp + 2047 + 128 + 0x20], %l4	! chosen device node
+
+	mov	(1b - prom_getprop_name), %l1
+	mov	(1b - prom_mmu_name), %l2
+	mov	(1b - prom_mmu_ihandle_cache), %l5
+	sub	%l0, %l1, %l1
+	sub	%l0, %l2, %l2
+	sub	%l0, %l5, %l5
+
+	/* prom_mmu_ihandle_cache = prom_getint(chosen_node, "mmu") */
+	stx	%l1, [%sp + 2047 + 128 + 0x00]	! service, "getprop"
+	mov	4, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x08]	! num_args, 4
+	mov	1, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x10]	! num_rets, 1
+	stx	%l4, [%sp + 2047 + 128 + 0x18]	! arg1, chosen_node
+	stx	%l2, [%sp + 2047 + 128 + 0x20]	! arg2, "mmu"
+	stx	%l5, [%sp + 2047 + 128 + 0x28]	! arg3, &prom_mmu_ihandle_cache
+	mov	4, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x30]	! arg4, sizeof(arg3)
+	stx	%g0, [%sp + 2047 + 128 + 0x38]	! ret1
+	call	%l7
+	 add	%sp, (2047 + 128), %o0		! argument array
+
+	mov	(1b - prom_callmethod_name), %l1
+	mov	(1b - prom_translate_name), %l2
+	sub	%l0, %l1, %l1
+	sub	%l0, %l2, %l2
+	lduw	[%l5], %l5			! prom_mmu_ihandle_cache
+
+	stx	%l1, [%sp + 2047 + 128 + 0x00]	! service, "call-method"
+	mov	3, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x08]	! num_args, 3
+	mov	5, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x10]	! num_rets, 5
+	stx	%l2, [%sp + 2047 + 128 + 0x18]	! arg1: "translate"
+	stx	%l5, [%sp + 2047 + 128 + 0x20]	! arg2: prom_mmu_ihandle_cache
+	/* PAGE align */
+	srlx	%l0, 13, %l3
+	sllx	%l3, 13, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x28]	! arg3: vaddr, our PC
+	stx	%g0, [%sp + 2047 + 128 + 0x30]	! res1
+	stx	%g0, [%sp + 2047 + 128 + 0x38]	! res2
+	stx	%g0, [%sp + 2047 + 128 + 0x40]	! res3
+	stx	%g0, [%sp + 2047 + 128 + 0x48]	! res4
+	stx	%g0, [%sp + 2047 + 128 + 0x50]	! res5
+	call	%l7
+	 add	%sp, (2047 + 128), %o0		! argument array
+
+	ldx	[%sp + 2047 + 128 + 0x40], %l1	! translation mode
+	mov	(1b - prom_boot_mapping_mode), %l4
+	sub	%l0, %l4, %l4
+	stw	%l1, [%l4]
+	mov	(1b - prom_boot_mapping_phys_high), %l4
+	sub	%l0, %l4, %l4
+	ldx	[%sp + 2047 + 128 + 0x48], %l2	! physaddr high
+	stx	%l2, [%l4 + 0x0]
+	ldx	[%sp + 2047 + 128 + 0x50], %l3	! physaddr low
+	/* 4MB align */
+	srlx	%l3, 22, %l3
+	sllx	%l3, 22, %l3
+	stx	%l3, [%l4 + 0x8]
+
+	/* Leave service as-is, "call-method" */
+	mov	7, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x08]	! num_args, 7
+	mov	1, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x10]	! num_rets, 1
+	mov	(1b - prom_map_name), %l3
+	sub	%l0, %l3, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x18]	! arg1: "map"
+	/* Leave arg2 as-is, prom_mmu_ihandle_cache */
+	mov	-1, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x28]	! arg3: mode (-1 default)
+	/* 4MB align the kernel image size. */
+	set	(_end - KERNBASE), %l3
+	set	((4 * 1024 * 1024) - 1), %l4
+	add	%l3, %l4, %l3
+	andn	%l3, %l4, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x30]	! arg4: roundup(ksize, 4MB)
+	sethi	%hi(KERNBASE), %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x38]	! arg5: vaddr (KERNBASE)
+	stx	%g0, [%sp + 2047 + 128 + 0x40]	! arg6: empty
+	mov	(1b - prom_boot_mapping_phys_low), %l3
+	sub	%l0, %l3, %l3
+	ldx	[%l3], %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x48]	! arg7: phys addr
+	call	%l7
+	 add	%sp, (2047 + 128), %o0		! argument array
+
+	add	%sp, (192 + 128), %sp
+
+	sethi	%hi(prom_root_compatible), %g1
+	or	%g1, %lo(prom_root_compatible), %g1
+	sethi	%hi(prom_sun4v_name), %g7
+	or	%g7, %lo(prom_sun4v_name), %g7
+	mov	5, %g3
+90:	ldub	[%g7], %g2
+	ldub	[%g1], %g4
+	cmp	%g2, %g4
+	bne,pn	%icc, 80f
+	 add	%g7, 1, %g7
+	subcc	%g3, 1, %g3
+	bne,pt	%xcc, 90b
+	 add	%g1, 1, %g1
+
+	sethi	%hi(is_sun4v), %g1
+	or	%g1, %lo(is_sun4v), %g1
+	mov	1, %g7
+	stw	%g7, [%g1]
+
+	/* cpu_node = prom_finddevice("/cpu") */
+	mov	(1b - prom_finddev_name), %l1
+	mov	(1b - prom_cpu_path), %l2
+	sub	%l0, %l1, %l1
+	sub	%l0, %l2, %l2
+	sub	%sp, (192 + 128), %sp
+
+	stx	%l1, [%sp + 2047 + 128 + 0x00]	! service, "finddevice"
+	mov	1, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x08]	! num_args, 1
+	stx	%l3, [%sp + 2047 + 128 + 0x10]	! num_rets, 1
+	stx	%l2, [%sp + 2047 + 128 + 0x18]	! arg1, "/cpu"
+	stx	%g0, [%sp + 2047 + 128 + 0x20]	! ret1
+	call	%l7
+	 add	%sp, (2047 + 128), %o0		! argument array
+
+	ldx	[%sp + 2047 + 128 + 0x20], %l4	! cpu device node
+
+	mov	(1b - prom_getprop_name), %l1
+	mov	(1b - prom_compatible_name), %l2
+	mov	(1b - prom_cpu_compatible), %l5
+	sub	%l0, %l1, %l1
+	sub	%l0, %l2, %l2
+	sub	%l0, %l5, %l5
+
+	/* prom_getproperty(cpu_node, "compatible",
+	 *                  &prom_cpu_compatible, 64)
+	 */
+	stx	%l1, [%sp + 2047 + 128 + 0x00]	! service, "getprop"
+	mov	4, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x08]	! num_args, 4
+	mov	1, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x10]	! num_rets, 1
+	stx	%l4, [%sp + 2047 + 128 + 0x18]	! arg1, cpu_node
+	stx	%l2, [%sp + 2047 + 128 + 0x20]	! arg2, "compatible"
+	stx	%l5, [%sp + 2047 + 128 + 0x28]	! arg3, &prom_cpu_compatible
+	mov	64, %l3
+	stx	%l3, [%sp + 2047 + 128 + 0x30]	! arg4, size
+	stx	%g0, [%sp + 2047 + 128 + 0x38]	! ret1
+	call	%l7
+	 add	%sp, (2047 + 128), %o0		! argument array
+
+	add	%sp, (192 + 128), %sp
+
+	sethi	%hi(prom_cpu_compatible), %g1
+	or	%g1, %lo(prom_cpu_compatible), %g1
+	sethi	%hi(prom_niagara_prefix), %g7
+	or	%g7, %lo(prom_niagara_prefix), %g7
+	mov	17, %g3
+90:	ldub	[%g7], %g2
+	ldub	[%g1], %g4
+	cmp	%g2, %g4
+	bne,pn	%icc, 4f
+	 add	%g7, 1, %g7
+	subcc	%g3, 1, %g3
+	bne,pt	%xcc, 90b
+	 add	%g1, 1, %g1
+
+	sethi	%hi(prom_cpu_compatible), %g1
+	or	%g1, %lo(prom_cpu_compatible), %g1
+	ldub	[%g1 + 17], %g2
+	cmp	%g2, '1'
+	be,pt	%xcc, 5f
+	 mov	SUN4V_CHIP_NIAGARA1, %g4
+	cmp	%g2, '2'
+	be,pt	%xcc, 5f
+	 mov	SUN4V_CHIP_NIAGARA2, %g4
+4:
+	mov	SUN4V_CHIP_UNKNOWN, %g4
+5:	sethi	%hi(sun4v_chip_type), %g2
+	or	%g2, %lo(sun4v_chip_type), %g2
+	stw	%g4, [%g2]
+
+80:
+	BRANCH_IF_SUN4V(g1, jump_to_sun4u_init)
+	BRANCH_IF_CHEETAH_BASE(g1,g7,cheetah_boot)
+	BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,cheetah_plus_boot)
+	ba,pt	%xcc, spitfire_boot
+	 nop
+
+cheetah_plus_boot:
+	/* Preserve OBP chosen DCU and DCR register settings.  */
+	ba,pt	%xcc, cheetah_generic_boot
+	 nop
+
+cheetah_boot:
+	mov	DCR_BPE | DCR_RPE | DCR_SI | DCR_IFPOE | DCR_MS, %g1
+	wr	%g1, %asr18
+
+	sethi	%uhi(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g7
+	or	%g7, %ulo(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g7
+	sllx	%g7, 32, %g7
+	or	%g7, DCU_DM | DCU_IM | DCU_DC | DCU_IC, %g7
+	stxa	%g7, [%g0] ASI_DCU_CONTROL_REG
+	membar	#Sync
+
+cheetah_generic_boot:
+	mov	TSB_EXTENSION_P, %g3
+	stxa	%g0, [%g3] ASI_DMMU
+	stxa	%g0, [%g3] ASI_IMMU
+	membar	#Sync
+
+	mov	TSB_EXTENSION_S, %g3
+	stxa	%g0, [%g3] ASI_DMMU
+	membar	#Sync
+
+	mov	TSB_EXTENSION_N, %g3
+	stxa	%g0, [%g3] ASI_DMMU
+	stxa	%g0, [%g3] ASI_IMMU
+	membar	#Sync
+
+	ba,a,pt	%xcc, jump_to_sun4u_init
+
+spitfire_boot:
+	/* Typically PROM has already enabled both MMU's and both on-chip
+	 * caches, but we do it here anyway just to be paranoid.
+	 */
+	mov	(LSU_CONTROL_IC|LSU_CONTROL_DC|LSU_CONTROL_IM|LSU_CONTROL_DM), %g1
+	stxa	%g1, [%g0] ASI_LSU_CONTROL
+	membar	#Sync
+
+jump_to_sun4u_init:
+	/*
+	 * Make sure we are in privileged mode, have address masking,
+         * using the ordinary globals and have enabled floating
+         * point.
+	 *
+	 * Again, typically PROM has left %pil at 13 or similar, and
+	 * (PSTATE_PRIV | PSTATE_PEF | PSTATE_IE) in %pstate.
+         */
+	wrpr    %g0, (PSTATE_PRIV|PSTATE_PEF|PSTATE_IE), %pstate
+	wr	%g0, 0, %fprs
+
+	set	sun4u_init, %g2
+	jmpl    %g2 + %g0, %g0
+	 nop
+
+	.section	.text.init.refok
+sun4u_init:
+	BRANCH_IF_SUN4V(g1, sun4v_init)
+
+	/* Set ctx 0 */
+	mov		PRIMARY_CONTEXT, %g7
+	stxa		%g0, [%g7] ASI_DMMU
+	membar		#Sync
+
+	mov		SECONDARY_CONTEXT, %g7
+	stxa		%g0, [%g7] ASI_DMMU
+	membar	#Sync
+
+	ba,pt		%xcc, sun4u_continue
+	 nop
+
+sun4v_init:
+	/* Set ctx 0 */
+	mov		PRIMARY_CONTEXT, %g7
+	stxa		%g0, [%g7] ASI_MMU
+	membar		#Sync
+
+	mov		SECONDARY_CONTEXT, %g7
+	stxa		%g0, [%g7] ASI_MMU
+	membar		#Sync
+	ba,pt		%xcc, niagara_tlb_fixup
+	 nop
+
+sun4u_continue:
+	BRANCH_IF_ANY_CHEETAH(g1, g7, cheetah_tlb_fixup)
+
+	ba,pt	%xcc, spitfire_tlb_fixup
+	 nop
+
+niagara_tlb_fixup:
+	mov	3, %g2		/* Set TLB type to hypervisor. */
+	sethi	%hi(tlb_type), %g1
+	stw	%g2, [%g1 + %lo(tlb_type)]
+
+	/* Patch copy/clear ops.  */
+	sethi	%hi(sun4v_chip_type), %g1
+	lduw	[%g1 + %lo(sun4v_chip_type)], %g1
+	cmp	%g1, SUN4V_CHIP_NIAGARA1
+	be,pt	%xcc, niagara_patch
+	 cmp	%g1, SUN4V_CHIP_NIAGARA2
+	be,pt	%xcc, niagara2_patch
+	 nop
+
+	call	generic_patch_copyops
+	 nop
+	call	generic_patch_bzero
+	 nop
+	call	generic_patch_pageops
+	 nop
+
+	ba,a,pt	%xcc, 80f
+niagara2_patch:
+	call	niagara2_patch_copyops
+	 nop
+	call	niagara_patch_bzero
+	 nop
+	call	niagara2_patch_pageops
+	 nop
+
+	ba,a,pt	%xcc, 80f
+
+niagara_patch:
+	call	niagara_patch_copyops
+	 nop
+	call	niagara_patch_bzero
+	 nop
+	call	niagara_patch_pageops
+	 nop
+
+80:
+	/* Patch TLB/cache ops.  */
+	call	hypervisor_patch_cachetlbops
+	 nop
+
+	ba,pt	%xcc, tlb_fixup_done
+	 nop
+
+cheetah_tlb_fixup:
+	mov	2, %g2		/* Set TLB type to cheetah+. */
+	BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,1f)
+
+	mov	1, %g2		/* Set TLB type to cheetah. */
+
+1:	sethi	%hi(tlb_type), %g1
+	stw	%g2, [%g1 + %lo(tlb_type)]
+
+	/* Patch copy/page operations to cheetah optimized versions. */
+	call	cheetah_patch_copyops
+	 nop
+	call	cheetah_patch_copy_page
+	 nop
+	call	cheetah_patch_cachetlbops
+	 nop
+
+	ba,pt	%xcc, tlb_fixup_done
+	 nop
+
+spitfire_tlb_fixup:
+	/* Set TLB type to spitfire. */
+	mov	0, %g2
+	sethi	%hi(tlb_type), %g1
+	stw	%g2, [%g1 + %lo(tlb_type)]
+
+tlb_fixup_done:
+	sethi	%hi(init_thread_union), %g6
+	or	%g6, %lo(init_thread_union), %g6
+	ldx	[%g6 + TI_TASK], %g4
+	mov	%sp, %l6
+
+	wr	%g0, ASI_P, %asi
+	mov	1, %g1
+	sllx	%g1, THREAD_SHIFT, %g1
+	sub	%g1, (STACKFRAME_SZ + STACK_BIAS), %g1
+	add	%g6, %g1, %sp
+	mov	0, %fp
+
+	/* Set per-cpu pointer initially to zero, this makes
+	 * the boot-cpu use the in-kernel-image per-cpu areas
+	 * before setup_per_cpu_area() is invoked.
+	 */
+	clr	%g5
+
+	wrpr	%g0, 0, %wstate
+	wrpr	%g0, 0x0, %tl
+
+	/* Clear the bss */
+	sethi	%hi(__bss_start), %o0
+	or	%o0, %lo(__bss_start), %o0
+	sethi	%hi(_end), %o1
+	or	%o1, %lo(_end), %o1
+	call	__bzero
+	 sub	%o1, %o0, %o1
+
+#ifdef CONFIG_LOCKDEP
+	/* We have this call this super early, as even prom_init can grab
+	 * spinlocks and thus call into the lockdep code.
+	 */
+	call	lockdep_init
+	 nop
+#endif
+
+	mov	%l6, %o1			! OpenPROM stack
+	call	prom_init
+	 mov	%l7, %o0			! OpenPROM cif handler
+
+	/* Initialize current_thread_info()->cpu as early as possible.
+	 * In order to do that accurately we have to patch up the get_cpuid()
+	 * assembler sequences.  And that, in turn, requires that we know
+	 * if we are on a Starfire box or not.  While we're here, patch up
+	 * the sun4v sequences as well.
+	 */
+	call	check_if_starfire
+	 nop
+	call	per_cpu_patch
+	 nop
+	call	sun4v_patch
+	 nop
+
+#ifdef CONFIG_SMP
+	call	hard_smp_processor_id
+	 nop
+	cmp	%o0, NR_CPUS
+	blu,pt	%xcc, 1f
+	 nop
+	call	boot_cpu_id_too_large
+	 nop
+	/* Not reached... */
+
+1:
+	/* If we boot on a non-zero cpu, all of the per-cpu
+	 * variable references we make before setting up the
+	 * per-cpu areas will use a bogus offset.  Put a
+	 * compensating factor into __per_cpu_base to handle
+	 * this cleanly.
+	 *
+	 * What the per-cpu code calculates is:
+	 *
+	 *	__per_cpu_base + (cpu << __per_cpu_shift)
+	 *
+	 * These two variables are zero initially, so to
+	 * make it all cancel out to zero we need to put
+	 * "0 - (cpu << 0)" into __per_cpu_base so that the
+	 * above formula evaluates to zero.
+	 *
+	 * We cannot even perform a printk() until this stuff
+	 * is setup as that calls cpu_clock() which uses
+	 * per-cpu variables.
+	 */
+	sub	%g0, %o0, %o1
+	sethi	%hi(__per_cpu_base), %o2
+	stx	%o1, [%o2 + %lo(__per_cpu_base)]
+#else
+	mov	0, %o0
+#endif
+	sth	%o0, [%g6 + TI_CPU]
+
+	call	prom_init_report
+	 nop
+
+	/* Off we go.... */
+	call	start_kernel
+	 nop
+	/* Not reached... */
+
+	.previous
+
+	/* This is meant to allow the sharing of this code between
+	 * boot processor invocation (via setup_tba() below) and
+	 * secondary processor startup (via trampoline.S).  The
+	 * former does use this code, the latter does not yet due
+	 * to some complexities.  That should be fixed up at some
+	 * point.
+	 *
+	 * There used to be enormous complexity wrt. transferring
+	 * over from the firwmare's trap table to the Linux kernel's.
+	 * For example, there was a chicken & egg problem wrt. building
+	 * the OBP page tables, yet needing to be on the Linux kernel
+	 * trap table (to translate PAGE_OFFSET addresses) in order to
+	 * do that.
+	 *
+	 * We now handle OBP tlb misses differently, via linear lookups
+	 * into the prom_trans[] array.  So that specific problem no
+	 * longer exists.  Yet, unfortunately there are still some issues
+	 * preventing trampoline.S from using this code... ho hum.
+	 */
+	.globl	setup_trap_table
+setup_trap_table:
+	save	%sp, -192, %sp
+
+	/* Force interrupts to be disabled. */
+	rdpr	%pstate, %l0
+	andn	%l0, PSTATE_IE, %o1
+	wrpr	%o1, 0x0, %pstate
+	rdpr	%pil, %l1
+	wrpr	%g0, PIL_NORMAL_MAX, %pil
+
+	/* Make the firmware call to jump over to the Linux trap table.  */
+	sethi	%hi(is_sun4v), %o0
+	lduw	[%o0 + %lo(is_sun4v)], %o0
+	brz,pt	%o0, 1f
+	 nop
+
+	TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
+	add	%g2, TRAP_PER_CPU_FAULT_INFO, %g2
+	stxa	%g2, [%g0] ASI_SCRATCHPAD
+
+	/* Compute physical address:
+	 *
+	 * paddr = kern_base + (mmfsa_vaddr - KERNBASE)
+	 */
+	sethi	%hi(KERNBASE), %g3
+	sub	%g2, %g3, %g2
+	sethi	%hi(kern_base), %g3
+	ldx	[%g3 + %lo(kern_base)], %g3
+	add	%g2, %g3, %o1
+	sethi	%hi(sparc64_ttable_tl0), %o0
+
+	set	prom_set_trap_table_name, %g2
+	stx	%g2, [%sp + 2047 + 128 + 0x00]
+	mov	2, %g2
+	stx	%g2, [%sp + 2047 + 128 + 0x08]
+	mov	0, %g2
+	stx	%g2, [%sp + 2047 + 128 + 0x10]
+	stx	%o0, [%sp + 2047 + 128 + 0x18]
+	stx	%o1, [%sp + 2047 + 128 + 0x20]
+	sethi	%hi(p1275buf), %g2
+	or	%g2, %lo(p1275buf), %g2
+	ldx	[%g2 + 0x08], %o1
+	call	%o1
+	 add	%sp, (2047 + 128), %o0
+
+	ba,pt	%xcc, 2f
+	 nop
+
+1:	sethi	%hi(sparc64_ttable_tl0), %o0
+	set	prom_set_trap_table_name, %g2
+	stx	%g2, [%sp + 2047 + 128 + 0x00]
+	mov	1, %g2
+	stx	%g2, [%sp + 2047 + 128 + 0x08]
+	mov	0, %g2
+	stx	%g2, [%sp + 2047 + 128 + 0x10]
+	stx	%o0, [%sp + 2047 + 128 + 0x18]
+	sethi	%hi(p1275buf), %g2
+	or	%g2, %lo(p1275buf), %g2
+	ldx	[%g2 + 0x08], %o1
+	call	%o1
+	 add	%sp, (2047 + 128), %o0
+
+	/* Start using proper page size encodings in ctx register.  */
+2:	sethi	%hi(sparc64_kern_pri_context), %g3
+	ldx	[%g3 + %lo(sparc64_kern_pri_context)], %g2
+
+	mov		PRIMARY_CONTEXT, %g1
+
+661:	stxa		%g2, [%g1] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g2, [%g1] ASI_MMU
+	.previous
+
+	membar	#Sync
+
+	BRANCH_IF_SUN4V(o2, 1f)
+
+	/* Kill PROM timer */
+	sethi	%hi(0x80000000), %o2
+	sllx	%o2, 32, %o2
+	wr	%o2, 0, %tick_cmpr
+
+	BRANCH_IF_ANY_CHEETAH(o2, o3, 1f)
+
+	ba,pt	%xcc, 2f
+	 nop
+
+	/* Disable STICK_INT interrupts. */
+1:
+	sethi	%hi(0x80000000), %o2
+	sllx	%o2, 32, %o2
+	wr	%o2, %asr25
+
+2:
+	wrpr	%g0, %g0, %wstate
+
+	call	init_irqwork_curcpu
+	 nop
+
+	/* Now we can restore interrupt state. */
+	wrpr	%l0, 0, %pstate
+	wrpr	%l1, 0x0, %pil
+
+	ret
+	 restore
+
+	.globl	setup_tba
+setup_tba:
+	save	%sp, -192, %sp
+
+	/* The boot processor is the only cpu which invokes this
+	 * routine, the other cpus set things up via trampoline.S.
+	 * So save the OBP trap table address here.
+	 */
+	rdpr	%tba, %g7
+	sethi	%hi(prom_tba), %o1
+	or	%o1, %lo(prom_tba), %o1
+	stx	%g7, [%o1]
+
+	call	setup_trap_table
+	 nop
+
+	ret
+	 restore
+sparc64_boot_end:
+
+#include "etrap_64.S"
+#include "rtrap_64.S"
+#include "winfixup.S"
+#include "fpu_traps.S"
+#include "ivec.S"
+#include "getsetcc.S"
+#include "utrap.S"
+#include "spiterrs.S"
+#include "cherrs.S"
+#include "misctrap.S"
+#include "syscalls.S"
+#include "helpers.S"
+#include "hvcalls.S"
+#include "sun4v_tlb_miss.S"
+#include "sun4v_ivec.S"
+#include "ktlb.S"
+#include "tsb.S"
+
+/*
+ * The following skip makes sure the trap table in ttable.S is aligned
+ * on a 32K boundary as required by the v9 specs for TBA register.
+ *
+ * We align to a 32K boundary, then we have the 32K kernel TSB,
+ * the 64K kernel 4MB TSB, and then the 32K aligned trap table.
+ */
+1:
+	.skip	0x4000 + _start - 1b
+
+! 0x0000000000408000
+
+	.globl	swapper_tsb
+swapper_tsb:
+	.skip	(32 * 1024)
+
+	.globl	swapper_4m_tsb
+swapper_4m_tsb:
+	.skip	(64 * 1024)
+
+! 0x0000000000420000
+
+	/* Some care needs to be exercised if you try to move the
+	 * location of the trap table relative to other things.  For
+	 * one thing there are br* instructions in some of the
+	 * trap table entires which branch back to code in ktlb.S
+	 * Those instructions can only handle a signed 16-bit
+	 * displacement.
+	 *
+	 * There is a binutils bug (bugzilla #4558) which causes
+	 * the relocation overflow checks for such instructions to
+	 * not be done correctly.  So bintuils will not notice the
+	 * error and will instead write junk into the relocation and
+	 * you'll have an unbootable kernel.
+	 */
+#include "ttable.S"
+
+! 0x0000000000428000
+
+#include "systbls_64.S"
+
+	.data
+	.align	8
+	.globl	prom_tba, tlb_type
+prom_tba:	.xword	0
+tlb_type:	.word	0	/* Must NOT end up in BSS */
+	.section	".fixup",#alloc,#execinstr
+
+	.globl	__ret_efault, __retl_efault
+__ret_efault:
+	ret
+	 restore %g0, -EFAULT, %o0
+__retl_efault:
+	retl
+	 mov	-EFAULT, %o0
diff --git a/arch/sparc/kernel/helpers.S b/arch/sparc/kernel/helpers.S
new file mode 100644
index 000000000000..314dd0c9fc5b
--- /dev/null
+++ b/arch/sparc/kernel/helpers.S
@@ -0,0 +1,63 @@
+	.align	32
+	.globl	__flushw_user
+	.type	__flushw_user,#function
+__flushw_user:
+	rdpr	%otherwin, %g1
+	brz,pn	%g1, 2f
+	 clr	%g2
+1:	save	%sp, -128, %sp
+	rdpr	%otherwin, %g1
+	brnz,pt	%g1, 1b
+	 add	%g2, 1, %g2
+1:	sub	%g2, 1, %g2
+	brnz,pt	%g2, 1b
+	 restore %g0, %g0, %g0
+2:	retl
+	 nop
+	.size	__flushw_user,.-__flushw_user
+
+	/* Flush %fp and %i7 to the stack for all register
+	 * windows active inside of the cpu.  This allows
+	 * show_stack_trace() to avoid using an expensive
+	 * 'flushw'.
+	 */
+	.globl		stack_trace_flush
+	.type		stack_trace_flush,#function
+stack_trace_flush:
+	rdpr		%pstate, %o0
+	wrpr		%o0, PSTATE_IE, %pstate
+
+	rdpr		%cwp, %g1
+	rdpr		%canrestore, %g2
+	sub		%g1, 1, %g3
+
+1:	brz,pn		%g2, 2f
+	 sub		%g2, 1, %g2
+	wrpr		%g3, %cwp
+	stx		%fp, [%sp + STACK_BIAS + RW_V9_I6]
+	stx		%i7, [%sp + STACK_BIAS + RW_V9_I7]
+	ba,pt		%xcc, 1b
+	 sub		%g3, 1, %g3
+
+2:	wrpr		%g1, %cwp
+	wrpr		%o0, %pstate
+
+	retl
+	 nop
+	.size		stack_trace_flush,.-stack_trace_flush
+
+#ifdef CONFIG_SMP
+	.globl		hard_smp_processor_id
+	.type		hard_smp_processor_id,#function
+hard_smp_processor_id:
+#endif
+	.globl		real_hard_smp_processor_id
+	.type		real_hard_smp_processor_id,#function
+real_hard_smp_processor_id:
+	__GET_CPUID(%o0)
+	retl
+	 nop
+#ifdef CONFIG_SMP
+	.size		hard_smp_processor_id,.-hard_smp_processor_id
+#endif
+	.size		real_hard_smp_processor_id,.-real_hard_smp_processor_id
diff --git a/arch/sparc/kernel/hvapi.c b/arch/sparc/kernel/hvapi.c
new file mode 100644
index 000000000000..1d272c3b5740
--- /dev/null
+++ b/arch/sparc/kernel/hvapi.c
@@ -0,0 +1,193 @@
+/* hvapi.c: Hypervisor API management.
+ *
+ * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+
+#include <asm/hypervisor.h>
+#include <asm/oplib.h>
+
+/* If the hypervisor indicates that the API setting
+ * calls are unsupported, by returning HV_EBADTRAP or
+ * HV_ENOTSUPPORTED, we assume that API groups with the
+ * PRE_API flag set are major 1 minor 0.
+ */
+struct api_info {
+	unsigned long group;
+	unsigned long major;
+	unsigned long minor;
+	unsigned int refcnt;
+	unsigned int flags;
+#define FLAG_PRE_API		0x00000001
+};
+
+static struct api_info api_table[] = {
+	{ .group = HV_GRP_SUN4V,	.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_CORE,		.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_INTR,					},
+	{ .group = HV_GRP_SOFT_STATE,				},
+	{ .group = HV_GRP_PCI,		.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_LDOM,					},
+	{ .group = HV_GRP_SVC_CHAN,	.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_NCS,		.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_RNG,					},
+	{ .group = HV_GRP_NIAG_PERF,	.flags = FLAG_PRE_API	},
+	{ .group = HV_GRP_FIRE_PERF,				},
+	{ .group = HV_GRP_N2_CPU,				},
+	{ .group = HV_GRP_NIU,					},
+	{ .group = HV_GRP_VF_CPU,				},
+	{ .group = HV_GRP_DIAG,		.flags = FLAG_PRE_API	},
+};
+
+static DEFINE_SPINLOCK(hvapi_lock);
+
+static struct api_info *__get_info(unsigned long group)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(api_table); i++) {
+		if (api_table[i].group == group)
+			return &api_table[i];
+	}
+	return NULL;
+}
+
+static void __get_ref(struct api_info *p)
+{
+	p->refcnt++;
+}
+
+static void __put_ref(struct api_info *p)
+{
+	if (--p->refcnt == 0) {
+		unsigned long ignore;
+
+		sun4v_set_version(p->group, 0, 0, &ignore);
+		p->major = p->minor = 0;
+	}
+}
+
+/* Register a hypervisor API specification.  It indicates the
+ * API group and desired major+minor.
+ *
+ * If an existing API registration exists '0' (success) will
+ * be returned if it is compatible with the one being registered.
+ * Otherwise a negative error code will be returned.
+ *
+ * Otherwise an attempt will be made to negotiate the requested
+ * API group/major/minor with the hypervisor, and errors returned
+ * if that does not succeed.
+ */
+int sun4v_hvapi_register(unsigned long group, unsigned long major,
+			 unsigned long *minor)
+{
+	struct api_info *p;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&hvapi_lock, flags);
+	p = __get_info(group);
+	ret = -EINVAL;
+	if (p) {
+		if (p->refcnt) {
+			ret = -EINVAL;
+			if (p->major == major) {
+				*minor = p->minor;
+				ret = 0;
+			}
+		} else {
+			unsigned long actual_minor;
+			unsigned long hv_ret;
+
+			hv_ret = sun4v_set_version(group, major, *minor,
+						   &actual_minor);
+			ret = -EINVAL;
+			if (hv_ret == HV_EOK) {
+				*minor = actual_minor;
+				p->major = major;
+				p->minor = actual_minor;
+				ret = 0;
+			} else if (hv_ret == HV_EBADTRAP ||
+				   hv_ret == HV_ENOTSUPPORTED) {
+				if (p->flags & FLAG_PRE_API) {
+					if (major == 1) {
+						p->major = 1;
+						p->minor = 0;
+						*minor = 0;
+						ret = 0;
+					}
+				}
+			}
+		}
+
+		if (ret == 0)
+			__get_ref(p);
+	}
+	spin_unlock_irqrestore(&hvapi_lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL(sun4v_hvapi_register);
+
+void sun4v_hvapi_unregister(unsigned long group)
+{
+	struct api_info *p;
+	unsigned long flags;
+
+	spin_lock_irqsave(&hvapi_lock, flags);
+	p = __get_info(group);
+	if (p)
+		__put_ref(p);
+	spin_unlock_irqrestore(&hvapi_lock, flags);
+}
+EXPORT_SYMBOL(sun4v_hvapi_unregister);
+
+int sun4v_hvapi_get(unsigned long group,
+		    unsigned long *major,
+		    unsigned long *minor)
+{
+	struct api_info *p;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&hvapi_lock, flags);
+	ret = -EINVAL;
+	p = __get_info(group);
+	if (p && p->refcnt) {
+		*major = p->major;
+		*minor = p->minor;
+		ret = 0;
+	}
+	spin_unlock_irqrestore(&hvapi_lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL(sun4v_hvapi_get);
+
+void __init sun4v_hvapi_init(void)
+{
+	unsigned long group, major, minor;
+
+	group = HV_GRP_SUN4V;
+	major = 1;
+	minor = 0;
+	if (sun4v_hvapi_register(group, major, &minor))
+		goto bad;
+
+	group = HV_GRP_CORE;
+	major = 1;
+	minor = 1;
+	if (sun4v_hvapi_register(group, major, &minor))
+		goto bad;
+
+	return;
+
+bad:
+	prom_printf("HVAPI: Cannot register API group "
+		    "%lx with major(%u) minor(%u)\n",
+		    group, major, minor);
+	prom_halt();
+}
diff --git a/arch/sparc/kernel/hvcalls.S b/arch/sparc/kernel/hvcalls.S
new file mode 100644
index 000000000000..8a5f35ffb15e
--- /dev/null
+++ b/arch/sparc/kernel/hvcalls.S
@@ -0,0 +1,800 @@
+	/* %o0: devhandle
+	 * %o1:	devino
+	 *
+	 * returns %o0: sysino
+	 */
+ENTRY(sun4v_devino_to_sysino)
+	mov	HV_FAST_INTR_DEVINO2SYSINO, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o1, %o0
+ENDPROC(sun4v_devino_to_sysino)
+
+	/* %o0: sysino
+	 *
+	 * returns %o0: intr_enabled (HV_INTR_{DISABLED,ENABLED})
+	 */
+ENTRY(sun4v_intr_getenabled)
+	mov	HV_FAST_INTR_GETENABLED, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o1, %o0
+ENDPROC(sun4v_intr_getenabled)
+
+	/* %o0: sysino
+	 * %o1: intr_enabled (HV_INTR_{DISABLED,ENABLED})
+	 */
+ENTRY(sun4v_intr_setenabled)
+	mov	HV_FAST_INTR_SETENABLED, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_intr_setenabled)
+
+	/* %o0: sysino
+	 *
+	 * returns %o0: intr_state (HV_INTR_STATE_*)
+	 */
+ENTRY(sun4v_intr_getstate)
+	mov	HV_FAST_INTR_GETSTATE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o1, %o0
+ENDPROC(sun4v_intr_getstate)
+
+	/* %o0: sysino
+	 * %o1: intr_state (HV_INTR_STATE_*)
+	 */
+ENTRY(sun4v_intr_setstate)
+	mov	HV_FAST_INTR_SETSTATE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_intr_setstate)
+
+	/* %o0: sysino
+	 *
+	 * returns %o0: cpuid
+	 */
+ENTRY(sun4v_intr_gettarget)
+	mov	HV_FAST_INTR_GETTARGET, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o1, %o0
+ENDPROC(sun4v_intr_gettarget)
+
+	/* %o0: sysino
+	 * %o1: cpuid
+	 */
+ENTRY(sun4v_intr_settarget)
+	mov	HV_FAST_INTR_SETTARGET, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_intr_settarget)
+
+	/* %o0:	cpuid
+	 * %o1: pc
+	 * %o2:	rtba
+	 * %o3:	arg0
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_cpu_start)
+	mov	HV_FAST_CPU_START, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_cpu_start)
+
+	/* %o0:	cpuid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_cpu_stop)
+	mov	HV_FAST_CPU_STOP, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_cpu_stop)
+
+	/* returns %o0:	status  */
+ENTRY(sun4v_cpu_yield)
+	mov	HV_FAST_CPU_YIELD, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_cpu_yield)
+
+	/* %o0:	type
+	 * %o1:	queue paddr
+	 * %o2:	num queue entries
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_cpu_qconf)
+	mov	HV_FAST_CPU_QCONF, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_cpu_qconf)
+
+	/* %o0:	num cpus in cpu list
+	 * %o1:	cpu list paddr
+	 * %o2:	mondo block paddr
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_cpu_mondo_send)
+	mov	HV_FAST_CPU_MONDO_SEND, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_cpu_mondo_send)
+
+	/* %o0:	CPU ID
+	 *
+	 * returns %o0:	-status if status non-zero, else
+	 *         %o0:	cpu state as HV_CPU_STATE_*
+	 */
+ENTRY(sun4v_cpu_state)
+	mov	HV_FAST_CPU_STATE, %o5
+	ta	HV_FAST_TRAP
+	brnz,pn	%o0, 1f
+	 sub	%g0, %o0, %o0
+	mov	%o1, %o0
+1:	retl
+	 nop
+ENDPROC(sun4v_cpu_state)
+
+	/* %o0: virtual address
+	 * %o1: must be zero
+	 * %o2: TTE
+	 * %o3: HV_MMU_* flags
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_mmu_map_perm_addr)
+	mov	HV_FAST_MMU_MAP_PERM_ADDR, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_mmu_map_perm_addr)
+
+	/* %o0: number of TSB descriptions
+	 * %o1: TSB descriptions real address
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_mmu_tsb_ctx0)
+	mov	HV_FAST_MMU_TSB_CTX0, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_mmu_tsb_ctx0)
+
+	/* %o0:	API group number
+	 * %o1: pointer to unsigned long major number storage
+	 * %o2: pointer to unsigned long minor number storage
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_get_version)
+	mov	HV_CORE_GET_VER, %o5
+	mov	%o1, %o3
+	mov	%o2, %o4
+	ta	HV_CORE_TRAP
+	stx	%o1, [%o3]
+	retl
+	 stx	%o2, [%o4]
+ENDPROC(sun4v_get_version)
+
+	/* %o0: API group number
+	 * %o1: desired major number
+	 * %o2: desired minor number
+	 * %o3: pointer to unsigned long actual minor number storage
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_set_version)
+	mov	HV_CORE_SET_VER, %o5
+	mov	%o3, %o4
+	ta	HV_CORE_TRAP
+	retl
+	 stx	%o1, [%o4]
+ENDPROC(sun4v_set_version)
+
+	/* %o0: pointer to unsigned long time
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_tod_get)
+	mov	%o0, %o4
+	mov	HV_FAST_TOD_GET, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_tod_get)
+
+	/* %o0: time
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_tod_set)
+	mov	HV_FAST_TOD_SET, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_tod_set)
+
+	/* %o0: pointer to unsigned long status
+	 *
+	 * returns %o0: signed character
+	 */
+ENTRY(sun4v_con_getchar)
+	mov	%o0, %o4
+	mov	HV_FAST_CONS_GETCHAR, %o5
+	clr	%o0
+	clr	%o1
+	ta	HV_FAST_TRAP
+	stx	%o0, [%o4]
+	retl
+	 sra	%o1, 0, %o0
+ENDPROC(sun4v_con_getchar)
+
+	/* %o0: signed long character
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_con_putchar)
+	mov	HV_FAST_CONS_PUTCHAR, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 sra	%o0, 0, %o0
+ENDPROC(sun4v_con_putchar)
+
+	/* %o0: buffer real address
+	 * %o1: buffer size
+	 * %o2: pointer to unsigned long bytes_read
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_con_read)
+	mov	%o2, %o4
+	mov	HV_FAST_CONS_READ, %o5
+	ta	HV_FAST_TRAP
+	brnz	%o0, 1f
+	 cmp	%o1, -1		/* break */
+	be,a,pn	%icc, 1f
+	 mov	%o1, %o0
+	cmp	%o1, -2		/* hup */
+	be,a,pn	%icc, 1f
+	 mov	%o1, %o0
+	stx	%o1, [%o4]
+1:	retl
+	 nop
+ENDPROC(sun4v_con_read)
+
+	/* %o0: buffer real address
+	 * %o1: buffer size
+	 * %o2: pointer to unsigned long bytes_written
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_con_write)
+	mov	%o2, %o4
+	mov	HV_FAST_CONS_WRITE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_con_write)
+
+	/* %o0:	soft state
+	 * %o1:	address of description string
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_mach_set_soft_state)
+	mov	HV_FAST_MACH_SET_SOFT_STATE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_mach_set_soft_state)
+
+	/* %o0: exit code
+	 *
+	 * Does not return.
+	 */
+ENTRY(sun4v_mach_exit)
+	mov	HV_FAST_MACH_EXIT, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_mach_exit)
+
+	/* %o0: buffer real address
+	 * %o1: buffer length
+	 * %o2: pointer to unsigned long real_buf_len
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_mach_desc)
+	mov	%o2, %o4
+	mov	HV_FAST_MACH_DESC, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_mach_desc)
+
+	/* %o0: new timeout in milliseconds
+	 * %o1: pointer to unsigned long orig_timeout
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_mach_set_watchdog)
+	mov	%o1, %o4
+	mov	HV_FAST_MACH_SET_WATCHDOG, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_mach_set_watchdog)
+
+	/* No inputs and does not return.  */
+ENTRY(sun4v_mach_sir)
+	mov	%o1, %o4
+	mov	HV_FAST_MACH_SIR, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_mach_sir)
+
+	/* %o0: channel
+	 * %o1:	ra
+	 * %o2:	num_entries
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_tx_qconf)
+	mov	HV_FAST_LDC_TX_QCONF, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_ldc_tx_qconf)
+
+	/* %o0: channel
+	 * %o1:	pointer to unsigned long ra
+	 * %o2:	pointer to unsigned long num_entries
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_tx_qinfo)
+	mov	%o1, %g1
+	mov	%o2, %g2
+	mov	HV_FAST_LDC_TX_QINFO, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	stx	%o2, [%g2]
+	retl
+	 nop
+ENDPROC(sun4v_ldc_tx_qinfo)
+
+	/* %o0: channel
+	 * %o1:	pointer to unsigned long head_off
+	 * %o2:	pointer to unsigned long tail_off
+	 * %o2:	pointer to unsigned long chan_state
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_tx_get_state)
+	mov	%o1, %g1
+	mov	%o2, %g2
+	mov	%o3, %g3
+	mov	HV_FAST_LDC_TX_GET_STATE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	stx	%o2, [%g2]
+	stx	%o3, [%g3]
+	retl
+	 nop
+ENDPROC(sun4v_ldc_tx_get_state)
+
+	/* %o0: channel
+	 * %o1:	tail_off
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_tx_set_qtail)
+	mov	HV_FAST_LDC_TX_SET_QTAIL, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_ldc_tx_set_qtail)
+
+	/* %o0: channel
+	 * %o1:	ra
+	 * %o2:	num_entries
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_rx_qconf)
+	mov	HV_FAST_LDC_RX_QCONF, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_ldc_rx_qconf)
+
+	/* %o0: channel
+	 * %o1:	pointer to unsigned long ra
+	 * %o2:	pointer to unsigned long num_entries
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_rx_qinfo)
+	mov	%o1, %g1
+	mov	%o2, %g2
+	mov	HV_FAST_LDC_RX_QINFO, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	stx	%o2, [%g2]
+	retl
+	 nop
+ENDPROC(sun4v_ldc_rx_qinfo)
+
+	/* %o0: channel
+	 * %o1:	pointer to unsigned long head_off
+	 * %o2:	pointer to unsigned long tail_off
+	 * %o2:	pointer to unsigned long chan_state
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_rx_get_state)
+	mov	%o1, %g1
+	mov	%o2, %g2
+	mov	%o3, %g3
+	mov	HV_FAST_LDC_RX_GET_STATE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	stx	%o2, [%g2]
+	stx	%o3, [%g3]
+	retl
+	 nop
+ENDPROC(sun4v_ldc_rx_get_state)
+
+	/* %o0: channel
+	 * %o1:	head_off
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_rx_set_qhead)
+	mov	HV_FAST_LDC_RX_SET_QHEAD, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_ldc_rx_set_qhead)
+
+	/* %o0: channel
+	 * %o1:	ra
+	 * %o2:	num_entries
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_ldc_set_map_table)
+	mov	HV_FAST_LDC_SET_MAP_TABLE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_ldc_set_map_table)
+
+	/* %o0: channel
+	 * %o1:	pointer to unsigned long ra
+	 * %o2:	pointer to unsigned long num_entries
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_ldc_get_map_table)
+	mov	%o1, %g1
+	mov	%o2, %g2
+	mov	HV_FAST_LDC_GET_MAP_TABLE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	stx	%o2, [%g2]
+	retl
+	 nop
+ENDPROC(sun4v_ldc_get_map_table)
+
+	/* %o0:	channel
+	 * %o1:	dir_code
+	 * %o2:	tgt_raddr
+	 * %o3:	lcl_raddr
+	 * %o4:	len
+	 * %o5:	pointer to unsigned long actual_len
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_copy)
+	mov	%o5, %g1
+	mov	HV_FAST_LDC_COPY, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	retl
+	 nop
+ENDPROC(sun4v_ldc_copy)
+
+	/* %o0:	channel
+	 * %o1:	cookie
+	 * %o2:	pointer to unsigned long ra
+	 * %o3:	pointer to unsigned long perm
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_mapin)
+	mov	%o2, %g1
+	mov	%o3, %g2
+	mov	HV_FAST_LDC_MAPIN, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	stx	%o2, [%g2]
+	retl
+	 nop
+ENDPROC(sun4v_ldc_mapin)
+
+	/* %o0:	ra
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_unmap)
+	mov	HV_FAST_LDC_UNMAP, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_ldc_unmap)
+
+	/* %o0: channel
+	 * %o1:	cookie
+	 * %o2:	mte_cookie
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ldc_revoke)
+	mov	HV_FAST_LDC_REVOKE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_ldc_revoke)
+
+	/* %o0: device handle
+	 * %o1:	device INO
+	 * %o2:	pointer to unsigned long cookie
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_vintr_get_cookie)
+	mov	%o2, %g1
+	mov	HV_FAST_VINTR_GET_COOKIE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	retl
+	 nop
+ENDPROC(sun4v_vintr_get_cookie)
+
+	/* %o0: device handle
+	 * %o1:	device INO
+	 * %o2:	cookie
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_vintr_set_cookie)
+	mov	HV_FAST_VINTR_SET_COOKIE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_vintr_set_cookie)
+
+	/* %o0: device handle
+	 * %o1:	device INO
+	 * %o2:	pointer to unsigned long valid_state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_vintr_get_valid)
+	mov	%o2, %g1
+	mov	HV_FAST_VINTR_GET_VALID, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	retl
+	 nop
+ENDPROC(sun4v_vintr_get_valid)
+
+	/* %o0: device handle
+	 * %o1:	device INO
+	 * %o2:	valid_state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_vintr_set_valid)
+	mov	HV_FAST_VINTR_SET_VALID, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_vintr_set_valid)
+
+	/* %o0: device handle
+	 * %o1:	device INO
+	 * %o2:	pointer to unsigned long state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_vintr_get_state)
+	mov	%o2, %g1
+	mov	HV_FAST_VINTR_GET_STATE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	retl
+	 nop
+ENDPROC(sun4v_vintr_get_state)
+
+	/* %o0: device handle
+	 * %o1:	device INO
+	 * %o2:	state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_vintr_set_state)
+	mov	HV_FAST_VINTR_SET_STATE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_vintr_set_state)
+
+	/* %o0: device handle
+	 * %o1:	device INO
+	 * %o2:	pointer to unsigned long cpuid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_vintr_get_target)
+	mov	%o2, %g1
+	mov	HV_FAST_VINTR_GET_TARGET, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%g1]
+	retl
+	 nop
+ENDPROC(sun4v_vintr_get_target)
+
+	/* %o0: device handle
+	 * %o1:	device INO
+	 * %o2:	cpuid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(sun4v_vintr_set_target)
+	mov	HV_FAST_VINTR_SET_TARGET, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_vintr_set_target)
+
+	/* %o0: NCS sub-function
+	 * %o1:	sub-function arg real-address
+	 * %o2:	sub-function arg size
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(sun4v_ncs_request)
+	mov	HV_FAST_NCS_REQUEST, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_ncs_request)
+
+ENTRY(sun4v_svc_send)
+	save	%sp, -192, %sp
+	mov	%i0, %o0
+	mov	%i1, %o1
+	mov	%i2, %o2
+	mov	HV_FAST_SVC_SEND, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%i3]
+	ret
+	restore
+ENDPROC(sun4v_svc_send)
+
+ENTRY(sun4v_svc_recv)
+	save	%sp, -192, %sp
+	mov	%i0, %o0
+	mov	%i1, %o1
+	mov	%i2, %o2
+	mov	HV_FAST_SVC_RECV, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%i3]
+	ret
+	restore
+ENDPROC(sun4v_svc_recv)
+
+ENTRY(sun4v_svc_getstatus)
+	mov	HV_FAST_SVC_GETSTATUS, %o5
+	mov	%o1, %o4
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_svc_getstatus)
+
+ENTRY(sun4v_svc_setstatus)
+	mov	HV_FAST_SVC_SETSTATUS, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_svc_setstatus)
+
+ENTRY(sun4v_svc_clrstatus)
+	mov	HV_FAST_SVC_CLRSTATUS, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_svc_clrstatus)
+
+ENTRY(sun4v_mmustat_conf)
+	mov	%o1, %o4
+	mov	HV_FAST_MMUSTAT_CONF, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_mmustat_conf)
+
+ENTRY(sun4v_mmustat_info)
+	mov	%o0, %o4
+	mov	HV_FAST_MMUSTAT_INFO, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_mmustat_info)
+
+ENTRY(sun4v_mmu_demap_all)
+	clr	%o0
+	clr	%o1
+	mov	HV_MMU_ALL, %o2
+	mov	HV_FAST_MMU_DEMAP_ALL, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_mmu_demap_all)
+
+ENTRY(sun4v_niagara_getperf)
+	mov	%o0, %o4
+	mov	HV_FAST_GET_PERFREG, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_niagara_getperf)
+
+ENTRY(sun4v_niagara_setperf)
+	mov	HV_FAST_SET_PERFREG, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_niagara_setperf)
+
+ENTRY(sun4v_niagara2_getperf)
+	mov	%o0, %o4
+	mov	HV_FAST_N2_GET_PERFREG, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop
+ENDPROC(sun4v_niagara2_getperf)
+
+ENTRY(sun4v_niagara2_setperf)
+	mov	HV_FAST_N2_SET_PERFREG, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(sun4v_niagara2_setperf)
diff --git a/arch/sparc/kernel/hvtramp.S b/arch/sparc/kernel/hvtramp.S
new file mode 100644
index 000000000000..9365432904d6
--- /dev/null
+++ b/arch/sparc/kernel/hvtramp.S
@@ -0,0 +1,140 @@
+/* hvtramp.S: Hypervisor start-cpu trampoline code.
+ *
+ * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/init.h>
+
+#include <asm/thread_info.h>
+#include <asm/hypervisor.h>
+#include <asm/scratchpad.h>
+#include <asm/spitfire.h>
+#include <asm/hvtramp.h>
+#include <asm/pstate.h>
+#include <asm/ptrace.h>
+#include <asm/head.h>
+#include <asm/asi.h>
+#include <asm/pil.h>
+
+	__CPUINIT
+	.align		8
+	.globl		hv_cpu_startup, hv_cpu_startup_end
+
+	/* This code executes directly out of the hypervisor
+	 * with physical addressing (va==pa).  %o0 contains
+	 * our client argument which for Linux points to
+	 * a descriptor data structure which defines the
+	 * MMU entries we need to load up.
+	 *
+	 * After we set things up we enable the MMU and call
+	 * into the kernel.
+	 *
+	 * First setup basic privileged cpu state.
+	 */
+hv_cpu_startup:
+	SET_GL(0)
+	wrpr		%g0, PIL_NORMAL_MAX, %pil
+	wrpr		%g0, 0, %canrestore
+	wrpr		%g0, 0, %otherwin
+	wrpr		%g0, 6, %cansave
+	wrpr		%g0, 6, %cleanwin
+	wrpr		%g0, 0, %cwp
+	wrpr		%g0, 0, %wstate
+	wrpr		%g0, 0, %tl
+
+	sethi		%hi(sparc64_ttable_tl0), %g1
+	wrpr		%g1, %tba
+
+	mov		%o0, %l0
+
+	lduw		[%l0 + HVTRAMP_DESCR_CPU], %g1
+	mov		SCRATCHPAD_CPUID, %g2
+	stxa		%g1, [%g2] ASI_SCRATCHPAD
+
+	ldx		[%l0 + HVTRAMP_DESCR_FAULT_INFO_VA], %g2
+	stxa		%g2, [%g0] ASI_SCRATCHPAD
+
+	mov		0, %l1
+	lduw		[%l0 + HVTRAMP_DESCR_NUM_MAPPINGS], %l2
+	add		%l0, HVTRAMP_DESCR_MAPS, %l3
+
+1:	ldx		[%l3 + HVTRAMP_MAPPING_VADDR], %o0
+	clr		%o1
+	ldx		[%l3 + HVTRAMP_MAPPING_TTE], %o2
+	mov		HV_MMU_IMMU | HV_MMU_DMMU, %o3
+	mov		HV_FAST_MMU_MAP_PERM_ADDR, %o5
+	ta		HV_FAST_TRAP
+
+	brnz,pn		%o0, 80f
+	 nop
+
+	add		%l1, 1, %l1
+	cmp		%l1, %l2
+	blt,a,pt	%xcc, 1b
+	 add		%l3, HVTRAMP_MAPPING_SIZE, %l3
+
+	ldx		[%l0 + HVTRAMP_DESCR_FAULT_INFO_PA], %o0
+	mov		HV_FAST_MMU_FAULT_AREA_CONF, %o5
+	ta		HV_FAST_TRAP
+
+	brnz,pn		%o0, 80f
+	 nop
+
+	wrpr		%g0, (PSTATE_PRIV | PSTATE_PEF), %pstate
+
+	ldx		[%l0 + HVTRAMP_DESCR_THREAD_REG], %l6
+
+	mov		1, %o0
+	set		1f, %o1
+	mov		HV_FAST_MMU_ENABLE, %o5
+	ta		HV_FAST_TRAP
+
+	ba,pt		%xcc, 80f
+	 nop
+
+1:
+	wr		%g0, 0, %fprs
+	wr		%g0, ASI_P, %asi
+
+	mov		PRIMARY_CONTEXT, %g7
+	stxa		%g0, [%g7] ASI_MMU
+	membar		#Sync
+
+	mov		SECONDARY_CONTEXT, %g7
+	stxa		%g0, [%g7] ASI_MMU
+	membar		#Sync
+
+	mov		%l6, %g6
+	ldx		[%g6 + TI_TASK], %g4
+
+	mov		1, %g5
+	sllx		%g5, THREAD_SHIFT, %g5
+	sub		%g5, (STACKFRAME_SZ + STACK_BIAS), %g5
+	add		%g6, %g5, %sp
+	mov		0, %fp
+
+	call		init_irqwork_curcpu
+	 nop
+	call		hard_smp_processor_id
+	 nop
+
+	call		sun4v_register_mondo_queues
+	 nop
+
+	call		init_cur_cpu_trap
+	 mov		%g6, %o0
+
+	wrpr		%g0, (PSTATE_PRIV | PSTATE_PEF | PSTATE_IE), %pstate
+
+	call		smp_callin
+	 nop
+	call		cpu_idle
+	 mov		0, %o0
+	call		cpu_panic
+	 nop
+
+80:	ba,pt		%xcc, 80b
+	 nop
+
+	.align		8
+hv_cpu_startup_end:
diff --git a/arch/sparc/kernel/idprom.c b/arch/sparc/kernel/idprom.c
index 223a6582e1e2..c16135e0c151 100644
--- a/arch/sparc/kernel/idprom.c
+++ b/arch/sparc/kernel/idprom.c
@@ -11,35 +11,37 @@
 
 #include <asm/oplib.h>
 #include <asm/idprom.h>
-#include <asm/machines.h>  /* Fun with Sun released architectures. */
 
 struct idprom *idprom;
 static struct idprom idprom_buffer;
 
+#ifdef CONFIG_SPARC32
+#include <asm/machines.h>  /* Fun with Sun released architectures. */
+
 /* Here is the master table of Sun machines which use some implementation
  * of the Sparc CPU and have a meaningful IDPROM machtype value that we
  * know about.  See asm-sparc/machines.h for empirical constants.
  */
 static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
 /* First, Sun4's */
-{ "Sun 4/100 Series", (SM_SUN4 | SM_4_110) },
-{ "Sun 4/200 Series", (SM_SUN4 | SM_4_260) },
-{ "Sun 4/300 Series", (SM_SUN4 | SM_4_330) },
-{ "Sun 4/400 Series", (SM_SUN4 | SM_4_470) },
+{ .name = "Sun 4/100 Series",        .id_machtype = (SM_SUN4 | SM_4_110) },
+{ .name = "Sun 4/200 Series",        .id_machtype = (SM_SUN4 | SM_4_260) },
+{ .name = "Sun 4/300 Series",        .id_machtype = (SM_SUN4 | SM_4_330) },
+{ .name = "Sun 4/400 Series",        .id_machtype = (SM_SUN4 | SM_4_470) },
 /* Now, Sun4c's */
-{ "Sun4c SparcStation 1", (SM_SUN4C | SM_4C_SS1) },
-{ "Sun4c SparcStation IPC", (SM_SUN4C | SM_4C_IPC) },
-{ "Sun4c SparcStation 1+", (SM_SUN4C | SM_4C_SS1PLUS) },
-{ "Sun4c SparcStation SLC", (SM_SUN4C | SM_4C_SLC) },
-{ "Sun4c SparcStation 2", (SM_SUN4C | SM_4C_SS2) },
-{ "Sun4c SparcStation ELC", (SM_SUN4C | SM_4C_ELC) },
-{ "Sun4c SparcStation IPX", (SM_SUN4C | SM_4C_IPX) },
+{ .name = "Sun4c SparcStation 1",    .id_machtype = (SM_SUN4C | SM_4C_SS1) },
+{ .name = "Sun4c SparcStation IPC",  .id_machtype = (SM_SUN4C | SM_4C_IPC) },
+{ .name = "Sun4c SparcStation 1+",   .id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) },
+{ .name = "Sun4c SparcStation SLC",  .id_machtype = (SM_SUN4C | SM_4C_SLC) },
+{ .name = "Sun4c SparcStation 2",    .id_machtype = (SM_SUN4C | SM_4C_SS2) },
+{ .name = "Sun4c SparcStation ELC",  .id_machtype = (SM_SUN4C | SM_4C_ELC) },
+{ .name = "Sun4c SparcStation IPX",  .id_machtype = (SM_SUN4C | SM_4C_IPX) },
 /* Finally, early Sun4m's */
-{ "Sun4m SparcSystem600", (SM_SUN4M | SM_4M_SS60) },
-{ "Sun4m SparcStation10/20", (SM_SUN4M | SM_4M_SS50) },
-{ "Sun4m SparcStation5", (SM_SUN4M | SM_4M_SS40) },
+{ .name = "Sun4m SparcSystem600",    .id_machtype = (SM_SUN4M | SM_4M_SS60) },
+{ .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) },
+{ .name = "Sun4m SparcStation5",     .id_machtype = (SM_SUN4M | SM_4M_SS40) },
 /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
-{ "Sun4M OBP based system", (SM_SUN4M_OBP | 0x0) } };
+{ .name = "Sun4M OBP based system",  .id_machtype = (SM_SUN4M_OBP | 0x0) } };
 
 static void __init display_system_type(unsigned char machtype)
 {
@@ -47,21 +49,25 @@ static void __init display_system_type(unsigned char machtype)
 	register int i;
 
 	for (i = 0; i < NUM_SUN_MACHINES; i++) {
-		if(Sun_Machines[i].id_machtype == machtype) {
+		if (Sun_Machines[i].id_machtype == machtype) {
 			if (machtype != (SM_SUN4M_OBP | 0x00) ||
 			    prom_getproperty(prom_root_node, "banner-name",
 					     sysname, sizeof(sysname)) <= 0)
-				printk("TYPE: %s\n", Sun_Machines[i].name);
+				printk(KERN_WARNING "TYPE: %s\n",
+				       Sun_Machines[i].name);
 			else
-				printk("TYPE: %s\n", sysname);
+				printk(KERN_WARNING "TYPE: %s\n", sysname);
 			return;
 		}
 	}
 
-	prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype);
-	prom_halt();
+	prom_printf("IDPROM: Warning, bogus id_machtype value, 0x%x\n", machtype);
 }
-
+#else
+static void __init display_system_type(unsigned char machtype)
+{
+}
+#endif
 /* Calculate the IDPROM checksum (xor of the data bytes). */
 static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
 {
@@ -80,21 +86,14 @@ void __init idprom_init(void)
 
 	idprom = &idprom_buffer;
 
-	if (idprom->id_format != 0x01)  {
-		prom_printf("IDPROM: Unknown format type!\n");
-		prom_halt();
-	}
+	if (idprom->id_format != 0x01)
+		prom_printf("IDPROM: Warning, unknown format type!\n");
 
-	if (idprom->id_cksum != calc_idprom_cksum(idprom)) {
-		prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n",
+	if (idprom->id_cksum != calc_idprom_cksum(idprom))
+		prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n",
 			    idprom->id_cksum, calc_idprom_cksum(idprom));
-		prom_halt();
-	}
 
 	display_system_type(idprom->id_machtype);
 
-	printk("Ethernet address: %x:%x:%x:%x:%x:%x\n",
-		    idprom->id_ethaddr[0], idprom->id_ethaddr[1],
-		    idprom->id_ethaddr[2], idprom->id_ethaddr[3],
-		    idprom->id_ethaddr[4], idprom->id_ethaddr[5]);
+	printk(KERN_WARNING "Ethernet address: %pM\n", idprom->id_ethaddr);
 }
diff --git a/arch/sparc/kernel/init_task.c b/arch/sparc/kernel/init_task.c
index 8e64ebc445ef..62126e4cec54 100644
--- a/arch/sparc/kernel/init_task.c
+++ b/arch/sparc/kernel/init_task.c
@@ -23,6 +23,5 @@ EXPORT_SYMBOL(init_task);
  * in etrap.S which assumes it.
  */
 union thread_union init_thread_union
-	__attribute__((section (".text\"\n\t#")))
-	__attribute__((aligned (THREAD_SIZE)))
+	__attribute__((section (".data.init_task")))
 	= { INIT_THREAD_INFO(init_task) };
diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c
new file mode 100644
index 000000000000..1cc1995531e2
--- /dev/null
+++ b/arch/sparc/kernel/iommu.c
@@ -0,0 +1,866 @@
+/* iommu.c: Generic sparc64 IOMMU support.
+ *
+ * Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1999, 2000 Jakub Jelinek (jakub@redhat.com)
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/errno.h>
+#include <linux/iommu-helper.h>
+
+#ifdef CONFIG_PCI
+#include <linux/pci.h>
+#endif
+
+#include <asm/iommu.h>
+
+#include "iommu_common.h"
+
+#define STC_CTXMATCH_ADDR(STC, CTX)	\
+	((STC)->strbuf_ctxmatch_base + ((CTX) << 3))
+#define STC_FLUSHFLAG_INIT(STC) \
+	(*((STC)->strbuf_flushflag) = 0UL)
+#define STC_FLUSHFLAG_SET(STC) \
+	(*((STC)->strbuf_flushflag) != 0UL)
+
+#define iommu_read(__reg) \
+({	u64 __ret; \
+	__asm__ __volatile__("ldxa [%1] %2, %0" \
+			     : "=r" (__ret) \
+			     : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
+			     : "memory"); \
+	__ret; \
+})
+#define iommu_write(__reg, __val) \
+	__asm__ __volatile__("stxa %0, [%1] %2" \
+			     : /* no outputs */ \
+			     : "r" (__val), "r" (__reg), \
+			       "i" (ASI_PHYS_BYPASS_EC_E))
+
+/* Must be invoked under the IOMMU lock. */
+static void iommu_flushall(struct iommu *iommu)
+{
+	if (iommu->iommu_flushinv) {
+		iommu_write(iommu->iommu_flushinv, ~(u64)0);
+	} else {
+		unsigned long tag;
+		int entry;
+
+		tag = iommu->iommu_tags;
+		for (entry = 0; entry < 16; entry++) {
+			iommu_write(tag, 0);
+			tag += 8;
+		}
+
+		/* Ensure completion of previous PIO writes. */
+		(void) iommu_read(iommu->write_complete_reg);
+	}
+}
+
+#define IOPTE_CONSISTENT(CTX) \
+	(IOPTE_VALID | IOPTE_CACHE | \
+	 (((CTX) << 47) & IOPTE_CONTEXT))
+
+#define IOPTE_STREAMING(CTX) \
+	(IOPTE_CONSISTENT(CTX) | IOPTE_STBUF)
+
+/* Existing mappings are never marked invalid, instead they
+ * are pointed to a dummy page.
+ */
+#define IOPTE_IS_DUMMY(iommu, iopte)	\
+	((iopte_val(*iopte) & IOPTE_PAGE) == (iommu)->dummy_page_pa)
+
+static inline void iopte_make_dummy(struct iommu *iommu, iopte_t *iopte)
+{
+	unsigned long val = iopte_val(*iopte);
+
+	val &= ~IOPTE_PAGE;
+	val |= iommu->dummy_page_pa;
+
+	iopte_val(*iopte) = val;
+}
+
+/* Based almost entirely upon the ppc64 iommu allocator.  If you use the 'handle'
+ * facility it must all be done in one pass while under the iommu lock.
+ *
+ * On sun4u platforms, we only flush the IOMMU once every time we've passed
+ * over the entire page table doing allocations.  Therefore we only ever advance
+ * the hint and cannot backtrack it.
+ */
+unsigned long iommu_range_alloc(struct device *dev,
+				struct iommu *iommu,
+				unsigned long npages,
+				unsigned long *handle)
+{
+	unsigned long n, end, start, limit, boundary_size;
+	struct iommu_arena *arena = &iommu->arena;
+	int pass = 0;
+
+	/* This allocator was derived from x86_64's bit string search */
+
+	/* Sanity check */
+	if (unlikely(npages == 0)) {
+		if (printk_ratelimit())
+			WARN_ON(1);
+		return DMA_ERROR_CODE;
+	}
+
+	if (handle && *handle)
+		start = *handle;
+	else
+		start = arena->hint;
+
+	limit = arena->limit;
+
+	/* The case below can happen if we have a small segment appended
+	 * to a large, or when the previous alloc was at the very end of
+	 * the available space. If so, go back to the beginning and flush.
+	 */
+	if (start >= limit) {
+		start = 0;
+		if (iommu->flush_all)
+			iommu->flush_all(iommu);
+	}
+
+ again:
+
+	if (dev)
+		boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
+				      1 << IO_PAGE_SHIFT);
+	else
+		boundary_size = ALIGN(1UL << 32, 1 << IO_PAGE_SHIFT);
+
+	n = iommu_area_alloc(arena->map, limit, start, npages,
+			     iommu->page_table_map_base >> IO_PAGE_SHIFT,
+			     boundary_size >> IO_PAGE_SHIFT, 0);
+	if (n == -1) {
+		if (likely(pass < 1)) {
+			/* First failure, rescan from the beginning.  */
+			start = 0;
+			if (iommu->flush_all)
+				iommu->flush_all(iommu);
+			pass++;
+			goto again;
+		} else {
+			/* Second failure, give up */
+			return DMA_ERROR_CODE;
+		}
+	}
+
+	end = n + npages;
+
+	arena->hint = end;
+
+	/* Update handle for SG allocations */
+	if (handle)
+		*handle = end;
+
+	return n;
+}
+
+void iommu_range_free(struct iommu *iommu, dma_addr_t dma_addr, unsigned long npages)
+{
+	struct iommu_arena *arena = &iommu->arena;
+	unsigned long entry;
+
+	entry = (dma_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT;
+
+	iommu_area_free(arena->map, entry, npages);
+}
+
+int iommu_table_init(struct iommu *iommu, int tsbsize,
+		     u32 dma_offset, u32 dma_addr_mask,
+		     int numa_node)
+{
+	unsigned long i, order, sz, num_tsb_entries;
+	struct page *page;
+
+	num_tsb_entries = tsbsize / sizeof(iopte_t);
+
+	/* Setup initial software IOMMU state. */
+	spin_lock_init(&iommu->lock);
+	iommu->ctx_lowest_free = 1;
+	iommu->page_table_map_base = dma_offset;
+	iommu->dma_addr_mask = dma_addr_mask;
+
+	/* Allocate and initialize the free area map.  */
+	sz = num_tsb_entries / 8;
+	sz = (sz + 7UL) & ~7UL;
+	iommu->arena.map = kmalloc_node(sz, GFP_KERNEL, numa_node);
+	if (!iommu->arena.map) {
+		printk(KERN_ERR "IOMMU: Error, kmalloc(arena.map) failed.\n");
+		return -ENOMEM;
+	}
+	memset(iommu->arena.map, 0, sz);
+	iommu->arena.limit = num_tsb_entries;
+
+	if (tlb_type != hypervisor)
+		iommu->flush_all = iommu_flushall;
+
+	/* Allocate and initialize the dummy page which we
+	 * set inactive IO PTEs to point to.
+	 */
+	page = alloc_pages_node(numa_node, GFP_KERNEL, 0);
+	if (!page) {
+		printk(KERN_ERR "IOMMU: Error, gfp(dummy_page) failed.\n");
+		goto out_free_map;
+	}
+	iommu->dummy_page = (unsigned long) page_address(page);
+	memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
+	iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
+
+	/* Now allocate and setup the IOMMU page table itself.  */
+	order = get_order(tsbsize);
+	page = alloc_pages_node(numa_node, GFP_KERNEL, order);
+	if (!page) {
+		printk(KERN_ERR "IOMMU: Error, gfp(tsb) failed.\n");
+		goto out_free_dummy_page;
+	}
+	iommu->page_table = (iopte_t *)page_address(page);
+
+	for (i = 0; i < num_tsb_entries; i++)
+		iopte_make_dummy(iommu, &iommu->page_table[i]);
+
+	return 0;
+
+out_free_dummy_page:
+	free_page(iommu->dummy_page);
+	iommu->dummy_page = 0UL;
+
+out_free_map:
+	kfree(iommu->arena.map);
+	iommu->arena.map = NULL;
+
+	return -ENOMEM;
+}
+
+static inline iopte_t *alloc_npages(struct device *dev, struct iommu *iommu,
+				    unsigned long npages)
+{
+	unsigned long entry;
+
+	entry = iommu_range_alloc(dev, iommu, npages, NULL);
+	if (unlikely(entry == DMA_ERROR_CODE))
+		return NULL;
+
+	return iommu->page_table + entry;
+}
+
+static int iommu_alloc_ctx(struct iommu *iommu)
+{
+	int lowest = iommu->ctx_lowest_free;
+	int sz = IOMMU_NUM_CTXS - lowest;
+	int n = find_next_zero_bit(iommu->ctx_bitmap, sz, lowest);
+
+	if (unlikely(n == sz)) {
+		n = find_next_zero_bit(iommu->ctx_bitmap, lowest, 1);
+		if (unlikely(n == lowest)) {
+			printk(KERN_WARNING "IOMMU: Ran out of contexts.\n");
+			n = 0;
+		}
+	}
+	if (n)
+		__set_bit(n, iommu->ctx_bitmap);
+
+	return n;
+}
+
+static inline void iommu_free_ctx(struct iommu *iommu, int ctx)
+{
+	if (likely(ctx)) {
+		__clear_bit(ctx, iommu->ctx_bitmap);
+		if (ctx < iommu->ctx_lowest_free)
+			iommu->ctx_lowest_free = ctx;
+	}
+}
+
+static void *dma_4u_alloc_coherent(struct device *dev, size_t size,
+				   dma_addr_t *dma_addrp, gfp_t gfp)
+{
+	unsigned long flags, order, first_page;
+	struct iommu *iommu;
+	struct page *page;
+	int npages, nid;
+	iopte_t *iopte;
+	void *ret;
+
+	size = IO_PAGE_ALIGN(size);
+	order = get_order(size);
+	if (order >= 10)
+		return NULL;
+
+	nid = dev->archdata.numa_node;
+	page = alloc_pages_node(nid, gfp, order);
+	if (unlikely(!page))
+		return NULL;
+
+	first_page = (unsigned long) page_address(page);
+	memset((char *)first_page, 0, PAGE_SIZE << order);
+
+	iommu = dev->archdata.iommu;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	iopte = alloc_npages(dev, iommu, size >> IO_PAGE_SHIFT);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	if (unlikely(iopte == NULL)) {
+		free_pages(first_page, order);
+		return NULL;
+	}
+
+	*dma_addrp = (iommu->page_table_map_base +
+		      ((iopte - iommu->page_table) << IO_PAGE_SHIFT));
+	ret = (void *) first_page;
+	npages = size >> IO_PAGE_SHIFT;
+	first_page = __pa(first_page);
+	while (npages--) {
+		iopte_val(*iopte) = (IOPTE_CONSISTENT(0UL) |
+				     IOPTE_WRITE |
+				     (first_page & IOPTE_PAGE));
+		iopte++;
+		first_page += IO_PAGE_SIZE;
+	}
+
+	return ret;
+}
+
+static void dma_4u_free_coherent(struct device *dev, size_t size,
+				 void *cpu, dma_addr_t dvma)
+{
+	struct iommu *iommu;
+	iopte_t *iopte;
+	unsigned long flags, order, npages;
+
+	npages = IO_PAGE_ALIGN(size) >> IO_PAGE_SHIFT;
+	iommu = dev->archdata.iommu;
+	iopte = iommu->page_table +
+		((dvma - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	iommu_range_free(iommu, dvma, npages);
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	order = get_order(size);
+	if (order < 10)
+		free_pages((unsigned long)cpu, order);
+}
+
+static dma_addr_t dma_4u_map_single(struct device *dev, void *ptr, size_t sz,
+				    enum dma_data_direction direction)
+{
+	struct iommu *iommu;
+	struct strbuf *strbuf;
+	iopte_t *base;
+	unsigned long flags, npages, oaddr;
+	unsigned long i, base_paddr, ctx;
+	u32 bus_addr, ret;
+	unsigned long iopte_protection;
+
+	iommu = dev->archdata.iommu;
+	strbuf = dev->archdata.stc;
+
+	if (unlikely(direction == DMA_NONE))
+		goto bad_no_ctx;
+
+	oaddr = (unsigned long)ptr;
+	npages = IO_PAGE_ALIGN(oaddr + sz) - (oaddr & IO_PAGE_MASK);
+	npages >>= IO_PAGE_SHIFT;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	base = alloc_npages(dev, iommu, npages);
+	ctx = 0;
+	if (iommu->iommu_ctxflush)
+		ctx = iommu_alloc_ctx(iommu);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	if (unlikely(!base))
+		goto bad;
+
+	bus_addr = (iommu->page_table_map_base +
+		    ((base - iommu->page_table) << IO_PAGE_SHIFT));
+	ret = bus_addr | (oaddr & ~IO_PAGE_MASK);
+	base_paddr = __pa(oaddr & IO_PAGE_MASK);
+	if (strbuf->strbuf_enabled)
+		iopte_protection = IOPTE_STREAMING(ctx);
+	else
+		iopte_protection = IOPTE_CONSISTENT(ctx);
+	if (direction != DMA_TO_DEVICE)
+		iopte_protection |= IOPTE_WRITE;
+
+	for (i = 0; i < npages; i++, base++, base_paddr += IO_PAGE_SIZE)
+		iopte_val(*base) = iopte_protection | base_paddr;
+
+	return ret;
+
+bad:
+	iommu_free_ctx(iommu, ctx);
+bad_no_ctx:
+	if (printk_ratelimit())
+		WARN_ON(1);
+	return DMA_ERROR_CODE;
+}
+
+static void strbuf_flush(struct strbuf *strbuf, struct iommu *iommu,
+			 u32 vaddr, unsigned long ctx, unsigned long npages,
+			 enum dma_data_direction direction)
+{
+	int limit;
+
+	if (strbuf->strbuf_ctxflush &&
+	    iommu->iommu_ctxflush) {
+		unsigned long matchreg, flushreg;
+		u64 val;
+
+		flushreg = strbuf->strbuf_ctxflush;
+		matchreg = STC_CTXMATCH_ADDR(strbuf, ctx);
+
+		iommu_write(flushreg, ctx);
+		val = iommu_read(matchreg);
+		val &= 0xffff;
+		if (!val)
+			goto do_flush_sync;
+
+		while (val) {
+			if (val & 0x1)
+				iommu_write(flushreg, ctx);
+			val >>= 1;
+		}
+		val = iommu_read(matchreg);
+		if (unlikely(val)) {
+			printk(KERN_WARNING "strbuf_flush: ctx flush "
+			       "timeout matchreg[%lx] ctx[%lx]\n",
+			       val, ctx);
+			goto do_page_flush;
+		}
+	} else {
+		unsigned long i;
+
+	do_page_flush:
+		for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
+			iommu_write(strbuf->strbuf_pflush, vaddr);
+	}
+
+do_flush_sync:
+	/* If the device could not have possibly put dirty data into
+	 * the streaming cache, no flush-flag synchronization needs
+	 * to be performed.
+	 */
+	if (direction == DMA_TO_DEVICE)
+		return;
+
+	STC_FLUSHFLAG_INIT(strbuf);
+	iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
+	(void) iommu_read(iommu->write_complete_reg);
+
+	limit = 100000;
+	while (!STC_FLUSHFLAG_SET(strbuf)) {
+		limit--;
+		if (!limit)
+			break;
+		udelay(1);
+		rmb();
+	}
+	if (!limit)
+		printk(KERN_WARNING "strbuf_flush: flushflag timeout "
+		       "vaddr[%08x] ctx[%lx] npages[%ld]\n",
+		       vaddr, ctx, npages);
+}
+
+static void dma_4u_unmap_single(struct device *dev, dma_addr_t bus_addr,
+				size_t sz, enum dma_data_direction direction)
+{
+	struct iommu *iommu;
+	struct strbuf *strbuf;
+	iopte_t *base;
+	unsigned long flags, npages, ctx, i;
+
+	if (unlikely(direction == DMA_NONE)) {
+		if (printk_ratelimit())
+			WARN_ON(1);
+		return;
+	}
+
+	iommu = dev->archdata.iommu;
+	strbuf = dev->archdata.stc;
+
+	npages = IO_PAGE_ALIGN(bus_addr + sz) - (bus_addr & IO_PAGE_MASK);
+	npages >>= IO_PAGE_SHIFT;
+	base = iommu->page_table +
+		((bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
+	bus_addr &= IO_PAGE_MASK;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	/* Record the context, if any. */
+	ctx = 0;
+	if (iommu->iommu_ctxflush)
+		ctx = (iopte_val(*base) & IOPTE_CONTEXT) >> 47UL;
+
+	/* Step 1: Kick data out of streaming buffers if necessary. */
+	if (strbuf->strbuf_enabled)
+		strbuf_flush(strbuf, iommu, bus_addr, ctx,
+			     npages, direction);
+
+	/* Step 2: Clear out TSB entries. */
+	for (i = 0; i < npages; i++)
+		iopte_make_dummy(iommu, base + i);
+
+	iommu_range_free(iommu, bus_addr, npages);
+
+	iommu_free_ctx(iommu, ctx);
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
+			 int nelems, enum dma_data_direction direction)
+{
+	struct scatterlist *s, *outs, *segstart;
+	unsigned long flags, handle, prot, ctx;
+	dma_addr_t dma_next = 0, dma_addr;
+	unsigned int max_seg_size;
+	unsigned long seg_boundary_size;
+	int outcount, incount, i;
+	struct strbuf *strbuf;
+	struct iommu *iommu;
+	unsigned long base_shift;
+
+	BUG_ON(direction == DMA_NONE);
+
+	iommu = dev->archdata.iommu;
+	strbuf = dev->archdata.stc;
+	if (nelems == 0 || !iommu)
+		return 0;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	ctx = 0;
+	if (iommu->iommu_ctxflush)
+		ctx = iommu_alloc_ctx(iommu);
+
+	if (strbuf->strbuf_enabled)
+		prot = IOPTE_STREAMING(ctx);
+	else
+		prot = IOPTE_CONSISTENT(ctx);
+	if (direction != DMA_TO_DEVICE)
+		prot |= IOPTE_WRITE;
+
+	outs = s = segstart = &sglist[0];
+	outcount = 1;
+	incount = nelems;
+	handle = 0;
+
+	/* Init first segment length for backout at failure */
+	outs->dma_length = 0;
+
+	max_seg_size = dma_get_max_seg_size(dev);
+	seg_boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
+				  IO_PAGE_SIZE) >> IO_PAGE_SHIFT;
+	base_shift = iommu->page_table_map_base >> IO_PAGE_SHIFT;
+	for_each_sg(sglist, s, nelems, i) {
+		unsigned long paddr, npages, entry, out_entry = 0, slen;
+		iopte_t *base;
+
+		slen = s->length;
+		/* Sanity check */
+		if (slen == 0) {
+			dma_next = 0;
+			continue;
+		}
+		/* Allocate iommu entries for that segment */
+		paddr = (unsigned long) SG_ENT_PHYS_ADDRESS(s);
+		npages = iommu_num_pages(paddr, slen, IO_PAGE_SIZE);
+		entry = iommu_range_alloc(dev, iommu, npages, &handle);
+
+		/* Handle failure */
+		if (unlikely(entry == DMA_ERROR_CODE)) {
+			if (printk_ratelimit())
+				printk(KERN_INFO "iommu_alloc failed, iommu %p paddr %lx"
+				       " npages %lx\n", iommu, paddr, npages);
+			goto iommu_map_failed;
+		}
+
+		base = iommu->page_table + entry;
+
+		/* Convert entry to a dma_addr_t */
+		dma_addr = iommu->page_table_map_base +
+			(entry << IO_PAGE_SHIFT);
+		dma_addr |= (s->offset & ~IO_PAGE_MASK);
+
+		/* Insert into HW table */
+		paddr &= IO_PAGE_MASK;
+		while (npages--) {
+			iopte_val(*base) = prot | paddr;
+			base++;
+			paddr += IO_PAGE_SIZE;
+		}
+
+		/* If we are in an open segment, try merging */
+		if (segstart != s) {
+			/* We cannot merge if:
+			 * - allocated dma_addr isn't contiguous to previous allocation
+			 */
+			if ((dma_addr != dma_next) ||
+			    (outs->dma_length + s->length > max_seg_size) ||
+			    (is_span_boundary(out_entry, base_shift,
+					      seg_boundary_size, outs, s))) {
+				/* Can't merge: create a new segment */
+				segstart = s;
+				outcount++;
+				outs = sg_next(outs);
+			} else {
+				outs->dma_length += s->length;
+			}
+		}
+
+		if (segstart == s) {
+			/* This is a new segment, fill entries */
+			outs->dma_address = dma_addr;
+			outs->dma_length = slen;
+			out_entry = entry;
+		}
+
+		/* Calculate next page pointer for contiguous check */
+		dma_next = dma_addr + slen;
+	}
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	if (outcount < incount) {
+		outs = sg_next(outs);
+		outs->dma_address = DMA_ERROR_CODE;
+		outs->dma_length = 0;
+	}
+
+	return outcount;
+
+iommu_map_failed:
+	for_each_sg(sglist, s, nelems, i) {
+		if (s->dma_length != 0) {
+			unsigned long vaddr, npages, entry, j;
+			iopte_t *base;
+
+			vaddr = s->dma_address & IO_PAGE_MASK;
+			npages = iommu_num_pages(s->dma_address, s->dma_length,
+						 IO_PAGE_SIZE);
+			iommu_range_free(iommu, vaddr, npages);
+
+			entry = (vaddr - iommu->page_table_map_base)
+				>> IO_PAGE_SHIFT;
+			base = iommu->page_table + entry;
+
+			for (j = 0; j < npages; j++)
+				iopte_make_dummy(iommu, base + j);
+
+			s->dma_address = DMA_ERROR_CODE;
+			s->dma_length = 0;
+		}
+		if (s == outs)
+			break;
+	}
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	return 0;
+}
+
+/* If contexts are being used, they are the same in all of the mappings
+ * we make for a particular SG.
+ */
+static unsigned long fetch_sg_ctx(struct iommu *iommu, struct scatterlist *sg)
+{
+	unsigned long ctx = 0;
+
+	if (iommu->iommu_ctxflush) {
+		iopte_t *base;
+		u32 bus_addr;
+
+		bus_addr = sg->dma_address & IO_PAGE_MASK;
+		base = iommu->page_table +
+			((bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
+
+		ctx = (iopte_val(*base) & IOPTE_CONTEXT) >> 47UL;
+	}
+	return ctx;
+}
+
+static void dma_4u_unmap_sg(struct device *dev, struct scatterlist *sglist,
+			    int nelems, enum dma_data_direction direction)
+{
+	unsigned long flags, ctx;
+	struct scatterlist *sg;
+	struct strbuf *strbuf;
+	struct iommu *iommu;
+
+	BUG_ON(direction == DMA_NONE);
+
+	iommu = dev->archdata.iommu;
+	strbuf = dev->archdata.stc;
+
+	ctx = fetch_sg_ctx(iommu, sglist);
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	sg = sglist;
+	while (nelems--) {
+		dma_addr_t dma_handle = sg->dma_address;
+		unsigned int len = sg->dma_length;
+		unsigned long npages, entry;
+		iopte_t *base;
+		int i;
+
+		if (!len)
+			break;
+		npages = iommu_num_pages(dma_handle, len, IO_PAGE_SIZE);
+		iommu_range_free(iommu, dma_handle, npages);
+
+		entry = ((dma_handle - iommu->page_table_map_base)
+			 >> IO_PAGE_SHIFT);
+		base = iommu->page_table + entry;
+
+		dma_handle &= IO_PAGE_MASK;
+		if (strbuf->strbuf_enabled)
+			strbuf_flush(strbuf, iommu, dma_handle, ctx,
+				     npages, direction);
+
+		for (i = 0; i < npages; i++)
+			iopte_make_dummy(iommu, base + i);
+
+		sg = sg_next(sg);
+	}
+
+	iommu_free_ctx(iommu, ctx);
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+static void dma_4u_sync_single_for_cpu(struct device *dev,
+				       dma_addr_t bus_addr, size_t sz,
+				       enum dma_data_direction direction)
+{
+	struct iommu *iommu;
+	struct strbuf *strbuf;
+	unsigned long flags, ctx, npages;
+
+	iommu = dev->archdata.iommu;
+	strbuf = dev->archdata.stc;
+
+	if (!strbuf->strbuf_enabled)
+		return;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	npages = IO_PAGE_ALIGN(bus_addr + sz) - (bus_addr & IO_PAGE_MASK);
+	npages >>= IO_PAGE_SHIFT;
+	bus_addr &= IO_PAGE_MASK;
+
+	/* Step 1: Record the context, if any. */
+	ctx = 0;
+	if (iommu->iommu_ctxflush &&
+	    strbuf->strbuf_ctxflush) {
+		iopte_t *iopte;
+
+		iopte = iommu->page_table +
+			((bus_addr - iommu->page_table_map_base)>>IO_PAGE_SHIFT);
+		ctx = (iopte_val(*iopte) & IOPTE_CONTEXT) >> 47UL;
+	}
+
+	/* Step 2: Kick data out of streaming buffers. */
+	strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+static void dma_4u_sync_sg_for_cpu(struct device *dev,
+				   struct scatterlist *sglist, int nelems,
+				   enum dma_data_direction direction)
+{
+	struct iommu *iommu;
+	struct strbuf *strbuf;
+	unsigned long flags, ctx, npages, i;
+	struct scatterlist *sg, *sgprv;
+	u32 bus_addr;
+
+	iommu = dev->archdata.iommu;
+	strbuf = dev->archdata.stc;
+
+	if (!strbuf->strbuf_enabled)
+		return;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	/* Step 1: Record the context, if any. */
+	ctx = 0;
+	if (iommu->iommu_ctxflush &&
+	    strbuf->strbuf_ctxflush) {
+		iopte_t *iopte;
+
+		iopte = iommu->page_table +
+			((sglist[0].dma_address - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
+		ctx = (iopte_val(*iopte) & IOPTE_CONTEXT) >> 47UL;
+	}
+
+	/* Step 2: Kick data out of streaming buffers. */
+	bus_addr = sglist[0].dma_address & IO_PAGE_MASK;
+	sgprv = NULL;
+	for_each_sg(sglist, sg, nelems, i) {
+		if (sg->dma_length == 0)
+			break;
+		sgprv = sg;
+	}
+
+	npages = (IO_PAGE_ALIGN(sgprv->dma_address + sgprv->dma_length)
+		  - bus_addr) >> IO_PAGE_SHIFT;
+	strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+static const struct dma_ops sun4u_dma_ops = {
+	.alloc_coherent		= dma_4u_alloc_coherent,
+	.free_coherent		= dma_4u_free_coherent,
+	.map_single		= dma_4u_map_single,
+	.unmap_single		= dma_4u_unmap_single,
+	.map_sg			= dma_4u_map_sg,
+	.unmap_sg		= dma_4u_unmap_sg,
+	.sync_single_for_cpu	= dma_4u_sync_single_for_cpu,
+	.sync_sg_for_cpu	= dma_4u_sync_sg_for_cpu,
+};
+
+const struct dma_ops *dma_ops = &sun4u_dma_ops;
+EXPORT_SYMBOL(dma_ops);
+
+int dma_supported(struct device *dev, u64 device_mask)
+{
+	struct iommu *iommu = dev->archdata.iommu;
+	u64 dma_addr_mask = iommu->dma_addr_mask;
+
+	if (device_mask >= (1UL << 32UL))
+		return 0;
+
+	if ((device_mask & dma_addr_mask) == dma_addr_mask)
+		return 1;
+
+#ifdef CONFIG_PCI
+	if (dev->bus == &pci_bus_type)
+		return pci_dma_supported(to_pci_dev(dev), device_mask);
+#endif
+
+	return 0;
+}
+EXPORT_SYMBOL(dma_supported);
+
+int dma_set_mask(struct device *dev, u64 dma_mask)
+{
+#ifdef CONFIG_PCI
+	if (dev->bus == &pci_bus_type)
+		return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
+#endif
+	return -EINVAL;
+}
+EXPORT_SYMBOL(dma_set_mask);
diff --git a/arch/sparc/kernel/iommu_common.h b/arch/sparc/kernel/iommu_common.h
new file mode 100644
index 000000000000..591f5879039c
--- /dev/null
+++ b/arch/sparc/kernel/iommu_common.h
@@ -0,0 +1,59 @@
+/* iommu_common.h: UltraSparc SBUS/PCI common iommu declarations.
+ *
+ * Copyright (C) 1999, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#ifndef _IOMMU_COMMON_H
+#define _IOMMU_COMMON_H
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/scatterlist.h>
+#include <linux/device.h>
+#include <linux/iommu-helper.h>
+
+#include <asm/iommu.h>
+#include <asm/scatterlist.h>
+
+/*
+ * These give mapping size of each iommu pte/tlb.
+ */
+#define IO_PAGE_SHIFT			13
+#define IO_PAGE_SIZE			(1UL << IO_PAGE_SHIFT)
+#define IO_PAGE_MASK			(~(IO_PAGE_SIZE-1))
+#define IO_PAGE_ALIGN(addr)		ALIGN(addr, IO_PAGE_SIZE)
+
+#define IO_TSB_ENTRIES			(128*1024)
+#define IO_TSB_SIZE			(IO_TSB_ENTRIES * 8)
+
+/*
+ * This is the hardwired shift in the iotlb tag/data parts.
+ */
+#define IOMMU_PAGE_SHIFT		13
+
+#define SG_ENT_PHYS_ADDRESS(SG)	(__pa(sg_virt((SG))))
+
+static inline int is_span_boundary(unsigned long entry,
+				   unsigned long shift,
+				   unsigned long boundary_size,
+				   struct scatterlist *outs,
+				   struct scatterlist *sg)
+{
+	unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs);
+	int nr = iommu_num_pages(paddr, outs->dma_length + sg->length,
+				 IO_PAGE_SIZE);
+
+	return iommu_is_span_boundary(entry, nr, shift, boundary_size);
+}
+
+extern unsigned long iommu_range_alloc(struct device *dev,
+				       struct iommu *iommu,
+				       unsigned long npages,
+				       unsigned long *handle);
+extern void iommu_range_free(struct iommu *iommu,
+			     dma_addr_t dma_addr,
+			     unsigned long npages);
+
+#endif /* _IOMMU_COMMON_H */
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 4f025b36934b..7ce14f05eb48 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -552,8 +552,8 @@ int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sgl, int nents,
 	/* IIep is write-through, not flushing. */
 	for_each_sg(sgl, sg, nents, n) {
 		BUG_ON(page_address(sg_page(sg)) == NULL);
-		sg->dvma_address = virt_to_phys(sg_virt(sg));
-		sg->dvma_length = sg->length;
+		sg->dma_address = virt_to_phys(sg_virt(sg));
+		sg->dma_length = sg->length;
 	}
 	return nents;
 }
diff --git a/arch/sparc/kernel/irq.c b/arch/sparc/kernel/irq_32.c
index 93e1d1c65290..f3488c45d57a 100644
--- a/arch/sparc/kernel/irq.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -46,6 +46,7 @@
 #include <asm/cacheflush.h>
 #include <asm/irq_regs.h>
 
+#include "kernel.h"
 #include "irq.h"
 
 #ifdef CONFIG_SMP
@@ -592,19 +593,19 @@ EXPORT_SYMBOL(request_irq);
 
 void disable_irq_nosync(unsigned int irq)
 {
-	return __disable_irq(irq);
+	__disable_irq(irq);
 }
 EXPORT_SYMBOL(disable_irq_nosync);
 
 void disable_irq(unsigned int irq)
 {
-	return __disable_irq(irq);
+	__disable_irq(irq);
 }
 EXPORT_SYMBOL(disable_irq);
 
 void enable_irq(unsigned int irq)
 {
-	return __enable_irq(irq);
+	__enable_irq(irq);
 }
 
 EXPORT_SYMBOL(enable_irq);
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
new file mode 100644
index 000000000000..cab8e0286871
--- /dev/null
+++ b/arch/sparc/kernel/irq_64.c
@@ -0,0 +1,1104 @@
+/* irq.c: UltraSparc IRQ handling/init/registry.
+ *
+ * Copyright (C) 1997, 2007, 2008 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1998  Eddie C. Dost    (ecd@skynet.be)
+ * Copyright (C) 1998  Jakub Jelinek    (jj@ultra.linux.cz)
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/linkage.h>
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/kernel_stat.h>
+#include <linux/signal.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+
+#include <asm/ptrace.h>
+#include <asm/processor.h>
+#include <asm/atomic.h>
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/iommu.h>
+#include <asm/upa.h>
+#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/timer.h>
+#include <asm/smp.h>
+#include <asm/starfire.h>
+#include <asm/uaccess.h>
+#include <asm/cache.h>
+#include <asm/cpudata.h>
+#include <asm/auxio.h>
+#include <asm/head.h>
+#include <asm/hypervisor.h>
+#include <asm/cacheflush.h>
+
+#include "entry.h"
+
+#define NUM_IVECS	(IMAP_INR + 1)
+
+struct ino_bucket *ivector_table;
+unsigned long ivector_table_pa;
+
+/* On several sun4u processors, it is illegal to mix bypass and
+ * non-bypass accesses.  Therefore we access all INO buckets
+ * using bypass accesses only.
+ */
+static unsigned long bucket_get_chain_pa(unsigned long bucket_pa)
+{
+	unsigned long ret;
+
+	__asm__ __volatile__("ldxa	[%1] %2, %0"
+			     : "=&r" (ret)
+			     : "r" (bucket_pa +
+				    offsetof(struct ino_bucket,
+					     __irq_chain_pa)),
+			       "i" (ASI_PHYS_USE_EC));
+
+	return ret;
+}
+
+static void bucket_clear_chain_pa(unsigned long bucket_pa)
+{
+	__asm__ __volatile__("stxa	%%g0, [%0] %1"
+			     : /* no outputs */
+			     : "r" (bucket_pa +
+				    offsetof(struct ino_bucket,
+					     __irq_chain_pa)),
+			       "i" (ASI_PHYS_USE_EC));
+}
+
+static unsigned int bucket_get_virt_irq(unsigned long bucket_pa)
+{
+	unsigned int ret;
+
+	__asm__ __volatile__("lduwa	[%1] %2, %0"
+			     : "=&r" (ret)
+			     : "r" (bucket_pa +
+				    offsetof(struct ino_bucket,
+					     __virt_irq)),
+			       "i" (ASI_PHYS_USE_EC));
+
+	return ret;
+}
+
+static void bucket_set_virt_irq(unsigned long bucket_pa,
+				unsigned int virt_irq)
+{
+	__asm__ __volatile__("stwa	%0, [%1] %2"
+			     : /* no outputs */
+			     : "r" (virt_irq),
+			       "r" (bucket_pa +
+				    offsetof(struct ino_bucket,
+					     __virt_irq)),
+			       "i" (ASI_PHYS_USE_EC));
+}
+
+#define irq_work_pa(__cpu)	&(trap_block[(__cpu)].irq_worklist_pa)
+
+static struct {
+	unsigned int dev_handle;
+	unsigned int dev_ino;
+	unsigned int in_use;
+} virt_irq_table[NR_IRQS];
+static DEFINE_SPINLOCK(virt_irq_alloc_lock);
+
+unsigned char virt_irq_alloc(unsigned int dev_handle,
+			     unsigned int dev_ino)
+{
+	unsigned long flags;
+	unsigned char ent;
+
+	BUILD_BUG_ON(NR_IRQS >= 256);
+
+	spin_lock_irqsave(&virt_irq_alloc_lock, flags);
+
+	for (ent = 1; ent < NR_IRQS; ent++) {
+		if (!virt_irq_table[ent].in_use)
+			break;
+	}
+	if (ent >= NR_IRQS) {
+		printk(KERN_ERR "IRQ: Out of virtual IRQs.\n");
+		ent = 0;
+	} else {
+		virt_irq_table[ent].dev_handle = dev_handle;
+		virt_irq_table[ent].dev_ino = dev_ino;
+		virt_irq_table[ent].in_use = 1;
+	}
+
+	spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
+
+	return ent;
+}
+
+#ifdef CONFIG_PCI_MSI
+void virt_irq_free(unsigned int virt_irq)
+{
+	unsigned long flags;
+
+	if (virt_irq >= NR_IRQS)
+		return;
+
+	spin_lock_irqsave(&virt_irq_alloc_lock, flags);
+
+	virt_irq_table[virt_irq].in_use = 0;
+
+	spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
+}
+#endif
+
+/*
+ * /proc/interrupts printing:
+ */
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+	int i = *(loff_t *) v, j;
+	struct irqaction * action;
+	unsigned long flags;
+
+	if (i == 0) {
+		seq_printf(p, "           ");
+		for_each_online_cpu(j)
+			seq_printf(p, "CPU%d       ",j);
+		seq_putc(p, '\n');
+	}
+
+	if (i < NR_IRQS) {
+		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		action = irq_desc[i].action;
+		if (!action)
+			goto skip;
+		seq_printf(p, "%3d: ",i);
+#ifndef CONFIG_SMP
+		seq_printf(p, "%10u ", kstat_irqs(i));
+#else
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+#endif
+		seq_printf(p, " %9s", irq_desc[i].chip->typename);
+		seq_printf(p, "  %s", action->name);
+
+		for (action=action->next; action; action = action->next)
+			seq_printf(p, ", %s", action->name);
+
+		seq_putc(p, '\n');
+skip:
+		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+	}
+	return 0;
+}
+
+static unsigned int sun4u_compute_tid(unsigned long imap, unsigned long cpuid)
+{
+	unsigned int tid;
+
+	if (this_is_starfire) {
+		tid = starfire_translate(imap, cpuid);
+		tid <<= IMAP_TID_SHIFT;
+		tid &= IMAP_TID_UPA;
+	} else {
+		if (tlb_type == cheetah || tlb_type == cheetah_plus) {
+			unsigned long ver;
+
+			__asm__ ("rdpr %%ver, %0" : "=r" (ver));
+			if ((ver >> 32UL) == __JALAPENO_ID ||
+			    (ver >> 32UL) == __SERRANO_ID) {
+				tid = cpuid << IMAP_TID_SHIFT;
+				tid &= IMAP_TID_JBUS;
+			} else {
+				unsigned int a = cpuid & 0x1f;
+				unsigned int n = (cpuid >> 5) & 0x1f;
+
+				tid = ((a << IMAP_AID_SHIFT) |
+				       (n << IMAP_NID_SHIFT));
+				tid &= (IMAP_AID_SAFARI |
+					IMAP_NID_SAFARI);;
+			}
+		} else {
+			tid = cpuid << IMAP_TID_SHIFT;
+			tid &= IMAP_TID_UPA;
+		}
+	}
+
+	return tid;
+}
+
+struct irq_handler_data {
+	unsigned long	iclr;
+	unsigned long	imap;
+
+	void		(*pre_handler)(unsigned int, void *, void *);
+	void		*arg1;
+	void		*arg2;
+};
+
+#ifdef CONFIG_SMP
+static int irq_choose_cpu(unsigned int virt_irq)
+{
+	cpumask_t mask = irq_desc[virt_irq].affinity;
+	int cpuid;
+
+	if (cpus_equal(mask, CPU_MASK_ALL)) {
+		static int irq_rover;
+		static DEFINE_SPINLOCK(irq_rover_lock);
+		unsigned long flags;
+
+		/* Round-robin distribution... */
+	do_round_robin:
+		spin_lock_irqsave(&irq_rover_lock, flags);
+
+		while (!cpu_online(irq_rover)) {
+			if (++irq_rover >= NR_CPUS)
+				irq_rover = 0;
+		}
+		cpuid = irq_rover;
+		do {
+			if (++irq_rover >= NR_CPUS)
+				irq_rover = 0;
+		} while (!cpu_online(irq_rover));
+
+		spin_unlock_irqrestore(&irq_rover_lock, flags);
+	} else {
+		cpumask_t tmp;
+
+		cpus_and(tmp, cpu_online_map, mask);
+
+		if (cpus_empty(tmp))
+			goto do_round_robin;
+
+		cpuid = first_cpu(tmp);
+	}
+
+	return cpuid;
+}
+#else
+static int irq_choose_cpu(unsigned int virt_irq)
+{
+	return real_hard_smp_processor_id();
+}
+#endif
+
+static void sun4u_irq_enable(unsigned int virt_irq)
+{
+	struct irq_handler_data *data = get_irq_chip_data(virt_irq);
+
+	if (likely(data)) {
+		unsigned long cpuid, imap, val;
+		unsigned int tid;
+
+		cpuid = irq_choose_cpu(virt_irq);
+		imap = data->imap;
+
+		tid = sun4u_compute_tid(imap, cpuid);
+
+		val = upa_readq(imap);
+		val &= ~(IMAP_TID_UPA | IMAP_TID_JBUS |
+			 IMAP_AID_SAFARI | IMAP_NID_SAFARI);
+		val |= tid | IMAP_VALID;
+		upa_writeq(val, imap);
+		upa_writeq(ICLR_IDLE, data->iclr);
+	}
+}
+
+static void sun4u_set_affinity(unsigned int virt_irq,
+			       const struct cpumask *mask)
+{
+	sun4u_irq_enable(virt_irq);
+}
+
+static void sun4u_irq_disable(unsigned int virt_irq)
+{
+	struct irq_handler_data *data = get_irq_chip_data(virt_irq);
+
+	if (likely(data)) {
+		unsigned long imap = data->imap;
+		unsigned long tmp = upa_readq(imap);
+
+		tmp &= ~IMAP_VALID;
+		upa_writeq(tmp, imap);
+	}
+}
+
+static void sun4u_irq_eoi(unsigned int virt_irq)
+{
+	struct irq_handler_data *data = get_irq_chip_data(virt_irq);
+	struct irq_desc *desc = irq_desc + virt_irq;
+
+	if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+		return;
+
+	if (likely(data))
+		upa_writeq(ICLR_IDLE, data->iclr);
+}
+
+static void sun4v_irq_enable(unsigned int virt_irq)
+{
+	unsigned int ino = virt_irq_table[virt_irq].dev_ino;
+	unsigned long cpuid = irq_choose_cpu(virt_irq);
+	int err;
+
+	err = sun4v_intr_settarget(ino, cpuid);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_intr_settarget(%x,%lu): "
+		       "err(%d)\n", ino, cpuid, err);
+	err = sun4v_intr_setstate(ino, HV_INTR_STATE_IDLE);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_intr_setstate(%x): "
+		       "err(%d)\n", ino, err);
+	err = sun4v_intr_setenabled(ino, HV_INTR_ENABLED);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_intr_setenabled(%x): err(%d)\n",
+		       ino, err);
+}
+
+static void sun4v_set_affinity(unsigned int virt_irq,
+			       const struct cpumask *mask)
+{
+	unsigned int ino = virt_irq_table[virt_irq].dev_ino;
+	unsigned long cpuid = irq_choose_cpu(virt_irq);
+	int err;
+
+	err = sun4v_intr_settarget(ino, cpuid);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_intr_settarget(%x,%lu): "
+		       "err(%d)\n", ino, cpuid, err);
+}
+
+static void sun4v_irq_disable(unsigned int virt_irq)
+{
+	unsigned int ino = virt_irq_table[virt_irq].dev_ino;
+	int err;
+
+	err = sun4v_intr_setenabled(ino, HV_INTR_DISABLED);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_intr_setenabled(%x): "
+		       "err(%d)\n", ino, err);
+}
+
+static void sun4v_irq_eoi(unsigned int virt_irq)
+{
+	unsigned int ino = virt_irq_table[virt_irq].dev_ino;
+	struct irq_desc *desc = irq_desc + virt_irq;
+	int err;
+
+	if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+		return;
+
+	err = sun4v_intr_setstate(ino, HV_INTR_STATE_IDLE);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_intr_setstate(%x): "
+		       "err(%d)\n", ino, err);
+}
+
+static void sun4v_virq_enable(unsigned int virt_irq)
+{
+	unsigned long cpuid, dev_handle, dev_ino;
+	int err;
+
+	cpuid = irq_choose_cpu(virt_irq);
+
+	dev_handle = virt_irq_table[virt_irq].dev_handle;
+	dev_ino = virt_irq_table[virt_irq].dev_ino;
+
+	err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_vintr_set_target(%lx,%lx,%lu): "
+		       "err(%d)\n",
+		       dev_handle, dev_ino, cpuid, err);
+	err = sun4v_vintr_set_state(dev_handle, dev_ino,
+				    HV_INTR_STATE_IDLE);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_vintr_set_state(%lx,%lx,"
+		       "HV_INTR_STATE_IDLE): err(%d)\n",
+		       dev_handle, dev_ino, err);
+	err = sun4v_vintr_set_valid(dev_handle, dev_ino,
+				    HV_INTR_ENABLED);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_vintr_set_state(%lx,%lx,"
+		       "HV_INTR_ENABLED): err(%d)\n",
+		       dev_handle, dev_ino, err);
+}
+
+static void sun4v_virt_set_affinity(unsigned int virt_irq,
+				    const struct cpumask *mask)
+{
+	unsigned long cpuid, dev_handle, dev_ino;
+	int err;
+
+	cpuid = irq_choose_cpu(virt_irq);
+
+	dev_handle = virt_irq_table[virt_irq].dev_handle;
+	dev_ino = virt_irq_table[virt_irq].dev_ino;
+
+	err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_vintr_set_target(%lx,%lx,%lu): "
+		       "err(%d)\n",
+		       dev_handle, dev_ino, cpuid, err);
+}
+
+static void sun4v_virq_disable(unsigned int virt_irq)
+{
+	unsigned long dev_handle, dev_ino;
+	int err;
+
+	dev_handle = virt_irq_table[virt_irq].dev_handle;
+	dev_ino = virt_irq_table[virt_irq].dev_ino;
+
+	err = sun4v_vintr_set_valid(dev_handle, dev_ino,
+				    HV_INTR_DISABLED);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_vintr_set_state(%lx,%lx,"
+		       "HV_INTR_DISABLED): err(%d)\n",
+		       dev_handle, dev_ino, err);
+}
+
+static void sun4v_virq_eoi(unsigned int virt_irq)
+{
+	struct irq_desc *desc = irq_desc + virt_irq;
+	unsigned long dev_handle, dev_ino;
+	int err;
+
+	if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+		return;
+
+	dev_handle = virt_irq_table[virt_irq].dev_handle;
+	dev_ino = virt_irq_table[virt_irq].dev_ino;
+
+	err = sun4v_vintr_set_state(dev_handle, dev_ino,
+				    HV_INTR_STATE_IDLE);
+	if (err != HV_EOK)
+		printk(KERN_ERR "sun4v_vintr_set_state(%lx,%lx,"
+		       "HV_INTR_STATE_IDLE): err(%d)\n",
+		       dev_handle, dev_ino, err);
+}
+
+static struct irq_chip sun4u_irq = {
+	.typename	= "sun4u",
+	.enable		= sun4u_irq_enable,
+	.disable	= sun4u_irq_disable,
+	.eoi		= sun4u_irq_eoi,
+	.set_affinity	= sun4u_set_affinity,
+};
+
+static struct irq_chip sun4v_irq = {
+	.typename	= "sun4v",
+	.enable		= sun4v_irq_enable,
+	.disable	= sun4v_irq_disable,
+	.eoi		= sun4v_irq_eoi,
+	.set_affinity	= sun4v_set_affinity,
+};
+
+static struct irq_chip sun4v_virq = {
+	.typename	= "vsun4v",
+	.enable		= sun4v_virq_enable,
+	.disable	= sun4v_virq_disable,
+	.eoi		= sun4v_virq_eoi,
+	.set_affinity	= sun4v_virt_set_affinity,
+};
+
+static void pre_flow_handler(unsigned int virt_irq,
+				      struct irq_desc *desc)
+{
+	struct irq_handler_data *data = get_irq_chip_data(virt_irq);
+	unsigned int ino = virt_irq_table[virt_irq].dev_ino;
+
+	data->pre_handler(ino, data->arg1, data->arg2);
+
+	handle_fasteoi_irq(virt_irq, desc);
+}
+
+void irq_install_pre_handler(int virt_irq,
+			     void (*func)(unsigned int, void *, void *),
+			     void *arg1, void *arg2)
+{
+	struct irq_handler_data *data = get_irq_chip_data(virt_irq);
+	struct irq_desc *desc = irq_desc + virt_irq;
+
+	data->pre_handler = func;
+	data->arg1 = arg1;
+	data->arg2 = arg2;
+
+	desc->handle_irq = pre_flow_handler;
+}
+
+unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
+{
+	struct ino_bucket *bucket;
+	struct irq_handler_data *data;
+	unsigned int virt_irq;
+	int ino;
+
+	BUG_ON(tlb_type == hypervisor);
+
+	ino = (upa_readq(imap) & (IMAP_IGN | IMAP_INO)) + inofixup;
+	bucket = &ivector_table[ino];
+	virt_irq = bucket_get_virt_irq(__pa(bucket));
+	if (!virt_irq) {
+		virt_irq = virt_irq_alloc(0, ino);
+		bucket_set_virt_irq(__pa(bucket), virt_irq);
+		set_irq_chip_and_handler_name(virt_irq,
+					      &sun4u_irq,
+					      handle_fasteoi_irq,
+					      "IVEC");
+	}
+
+	data = get_irq_chip_data(virt_irq);
+	if (unlikely(data))
+		goto out;
+
+	data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
+	if (unlikely(!data)) {
+		prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
+		prom_halt();
+	}
+	set_irq_chip_data(virt_irq, data);
+
+	data->imap  = imap;
+	data->iclr  = iclr;
+
+out:
+	return virt_irq;
+}
+
+static unsigned int sun4v_build_common(unsigned long sysino,
+				       struct irq_chip *chip)
+{
+	struct ino_bucket *bucket;
+	struct irq_handler_data *data;
+	unsigned int virt_irq;
+
+	BUG_ON(tlb_type != hypervisor);
+
+	bucket = &ivector_table[sysino];
+	virt_irq = bucket_get_virt_irq(__pa(bucket));
+	if (!virt_irq) {
+		virt_irq = virt_irq_alloc(0, sysino);
+		bucket_set_virt_irq(__pa(bucket), virt_irq);
+		set_irq_chip_and_handler_name(virt_irq, chip,
+					      handle_fasteoi_irq,
+					      "IVEC");
+	}
+
+	data = get_irq_chip_data(virt_irq);
+	if (unlikely(data))
+		goto out;
+
+	data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
+	if (unlikely(!data)) {
+		prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
+		prom_halt();
+	}
+	set_irq_chip_data(virt_irq, data);
+
+	/* Catch accidental accesses to these things.  IMAP/ICLR handling
+	 * is done by hypervisor calls on sun4v platforms, not by direct
+	 * register accesses.
+	 */
+	data->imap = ~0UL;
+	data->iclr = ~0UL;
+
+out:
+	return virt_irq;
+}
+
+unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
+{
+	unsigned long sysino = sun4v_devino_to_sysino(devhandle, devino);
+
+	return sun4v_build_common(sysino, &sun4v_irq);
+}
+
+unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
+{
+	struct irq_handler_data *data;
+	unsigned long hv_err, cookie;
+	struct ino_bucket *bucket;
+	struct irq_desc *desc;
+	unsigned int virt_irq;
+
+	bucket = kzalloc(sizeof(struct ino_bucket), GFP_ATOMIC);
+	if (unlikely(!bucket))
+		return 0;
+	__flush_dcache_range((unsigned long) bucket,
+			     ((unsigned long) bucket +
+			      sizeof(struct ino_bucket)));
+
+	virt_irq = virt_irq_alloc(devhandle, devino);
+	bucket_set_virt_irq(__pa(bucket), virt_irq);
+
+	set_irq_chip_and_handler_name(virt_irq, &sun4v_virq,
+				      handle_fasteoi_irq,
+				      "IVEC");
+
+	data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
+	if (unlikely(!data))
+		return 0;
+
+	/* In order to make the LDC channel startup sequence easier,
+	 * especially wrt. locking, we do not let request_irq() enable
+	 * the interrupt.
+	 */
+	desc = irq_desc + virt_irq;
+	desc->status |= IRQ_NOAUTOEN;
+
+	set_irq_chip_data(virt_irq, data);
+
+	/* Catch accidental accesses to these things.  IMAP/ICLR handling
+	 * is done by hypervisor calls on sun4v platforms, not by direct
+	 * register accesses.
+	 */
+	data->imap = ~0UL;
+	data->iclr = ~0UL;
+
+	cookie = ~__pa(bucket);
+	hv_err = sun4v_vintr_set_cookie(devhandle, devino, cookie);
+	if (hv_err) {
+		prom_printf("IRQ: Fatal, cannot set cookie for [%x:%x] "
+			    "err=%lu\n", devhandle, devino, hv_err);
+		prom_halt();
+	}
+
+	return virt_irq;
+}
+
+void ack_bad_irq(unsigned int virt_irq)
+{
+	unsigned int ino = virt_irq_table[virt_irq].dev_ino;
+
+	if (!ino)
+		ino = 0xdeadbeef;
+
+	printk(KERN_CRIT "Unexpected IRQ from ino[%x] virt_irq[%u]\n",
+	       ino, virt_irq);
+}
+
+void *hardirq_stack[NR_CPUS];
+void *softirq_stack[NR_CPUS];
+
+static __attribute__((always_inline)) void *set_hardirq_stack(void)
+{
+	void *orig_sp, *sp = hardirq_stack[smp_processor_id()];
+
+	__asm__ __volatile__("mov %%sp, %0" : "=r" (orig_sp));
+	if (orig_sp < sp ||
+	    orig_sp > (sp + THREAD_SIZE)) {
+		sp += THREAD_SIZE - 192 - STACK_BIAS;
+		__asm__ __volatile__("mov %0, %%sp" : : "r" (sp));
+	}
+
+	return orig_sp;
+}
+static __attribute__((always_inline)) void restore_hardirq_stack(void *orig_sp)
+{
+	__asm__ __volatile__("mov %0, %%sp" : : "r" (orig_sp));
+}
+
+void handler_irq(int irq, struct pt_regs *regs)
+{
+	unsigned long pstate, bucket_pa;
+	struct pt_regs *old_regs;
+	void *orig_sp;
+
+	clear_softint(1 << irq);
+
+	old_regs = set_irq_regs(regs);
+	irq_enter();
+
+	/* Grab an atomic snapshot of the pending IVECs.  */
+	__asm__ __volatile__("rdpr	%%pstate, %0\n\t"
+			     "wrpr	%0, %3, %%pstate\n\t"
+			     "ldx	[%2], %1\n\t"
+			     "stx	%%g0, [%2]\n\t"
+			     "wrpr	%0, 0x0, %%pstate\n\t"
+			     : "=&r" (pstate), "=&r" (bucket_pa)
+			     : "r" (irq_work_pa(smp_processor_id())),
+			       "i" (PSTATE_IE)
+			     : "memory");
+
+	orig_sp = set_hardirq_stack();
+
+	while (bucket_pa) {
+		struct irq_desc *desc;
+		unsigned long next_pa;
+		unsigned int virt_irq;
+
+		next_pa = bucket_get_chain_pa(bucket_pa);
+		virt_irq = bucket_get_virt_irq(bucket_pa);
+		bucket_clear_chain_pa(bucket_pa);
+
+		desc = irq_desc + virt_irq;
+
+		desc->handle_irq(virt_irq, desc);
+
+		bucket_pa = next_pa;
+	}
+
+	restore_hardirq_stack(orig_sp);
+
+	irq_exit();
+	set_irq_regs(old_regs);
+}
+
+void do_softirq(void)
+{
+	unsigned long flags;
+
+	if (in_interrupt())
+		return;
+
+	local_irq_save(flags);
+
+	if (local_softirq_pending()) {
+		void *orig_sp, *sp = softirq_stack[smp_processor_id()];
+
+		sp += THREAD_SIZE - 192 - STACK_BIAS;
+
+		__asm__ __volatile__("mov %%sp, %0\n\t"
+				     "mov %1, %%sp"
+				     : "=&r" (orig_sp)
+				     : "r" (sp));
+		__do_softirq();
+		__asm__ __volatile__("mov %0, %%sp"
+				     : : "r" (orig_sp));
+	}
+
+	local_irq_restore(flags);
+}
+
+static void unhandled_perf_irq(struct pt_regs *regs)
+{
+	unsigned long pcr, pic;
+
+	read_pcr(pcr);
+	read_pic(pic);
+
+	write_pcr(0);
+
+	printk(KERN_EMERG "CPU %d: Got unexpected perf counter IRQ.\n",
+	       smp_processor_id());
+	printk(KERN_EMERG "CPU %d: PCR[%016lx] PIC[%016lx]\n",
+	       smp_processor_id(), pcr, pic);
+}
+
+/* Almost a direct copy of the powerpc PMC code.  */
+static DEFINE_SPINLOCK(perf_irq_lock);
+static void *perf_irq_owner_caller; /* mostly for debugging */
+static void (*perf_irq)(struct pt_regs *regs) = unhandled_perf_irq;
+
+/* Invoked from level 15 PIL handler in trap table.  */
+void perfctr_irq(int irq, struct pt_regs *regs)
+{
+	clear_softint(1 << irq);
+	perf_irq(regs);
+}
+
+int register_perfctr_intr(void (*handler)(struct pt_regs *))
+{
+	int ret;
+
+	if (!handler)
+		return -EINVAL;
+
+	spin_lock(&perf_irq_lock);
+	if (perf_irq != unhandled_perf_irq) {
+		printk(KERN_WARNING "register_perfctr_intr: "
+		       "perf IRQ busy (reserved by caller %p)\n",
+		       perf_irq_owner_caller);
+		ret = -EBUSY;
+		goto out;
+	}
+
+	perf_irq_owner_caller = __builtin_return_address(0);
+	perf_irq = handler;
+
+	ret = 0;
+out:
+	spin_unlock(&perf_irq_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(register_perfctr_intr);
+
+void release_perfctr_intr(void (*handler)(struct pt_regs *))
+{
+	spin_lock(&perf_irq_lock);
+	perf_irq_owner_caller = NULL;
+	perf_irq = unhandled_perf_irq;
+	spin_unlock(&perf_irq_lock);
+}
+EXPORT_SYMBOL_GPL(release_perfctr_intr);
+
+#ifdef CONFIG_HOTPLUG_CPU
+void fixup_irqs(void)
+{
+	unsigned int irq;
+
+	for (irq = 0; irq < NR_IRQS; irq++) {
+		unsigned long flags;
+
+		spin_lock_irqsave(&irq_desc[irq].lock, flags);
+		if (irq_desc[irq].action &&
+		    !(irq_desc[irq].status & IRQ_PER_CPU)) {
+			if (irq_desc[irq].chip->set_affinity)
+				irq_desc[irq].chip->set_affinity(irq,
+					&irq_desc[irq].affinity);
+		}
+		spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
+	}
+
+	tick_ops->disable_irq();
+}
+#endif
+
+struct sun5_timer {
+	u64	count0;
+	u64	limit0;
+	u64	count1;
+	u64	limit1;
+};
+
+static struct sun5_timer *prom_timers;
+static u64 prom_limit0, prom_limit1;
+
+static void map_prom_timers(void)
+{
+	struct device_node *dp;
+	const unsigned int *addr;
+
+	/* PROM timer node hangs out in the top level of device siblings... */
+	dp = of_find_node_by_path("/");
+	dp = dp->child;
+	while (dp) {
+		if (!strcmp(dp->name, "counter-timer"))
+			break;
+		dp = dp->sibling;
+	}
+
+	/* Assume if node is not present, PROM uses different tick mechanism
+	 * which we should not care about.
+	 */
+	if (!dp) {
+		prom_timers = (struct sun5_timer *) 0;
+		return;
+	}
+
+	/* If PROM is really using this, it must be mapped by him. */
+	addr = of_get_property(dp, "address", NULL);
+	if (!addr) {
+		prom_printf("PROM does not have timer mapped, trying to continue.\n");
+		prom_timers = (struct sun5_timer *) 0;
+		return;
+	}
+	prom_timers = (struct sun5_timer *) ((unsigned long)addr[0]);
+}
+
+static void kill_prom_timer(void)
+{
+	if (!prom_timers)
+		return;
+
+	/* Save them away for later. */
+	prom_limit0 = prom_timers->limit0;
+	prom_limit1 = prom_timers->limit1;
+
+	/* Just as in sun4c/sun4m PROM uses timer which ticks at IRQ 14.
+	 * We turn both off here just to be paranoid.
+	 */
+	prom_timers->limit0 = 0;
+	prom_timers->limit1 = 0;
+
+	/* Wheee, eat the interrupt packet too... */
+	__asm__ __volatile__(
+"	mov	0x40, %%g2\n"
+"	ldxa	[%%g0] %0, %%g1\n"
+"	ldxa	[%%g2] %1, %%g1\n"
+"	stxa	%%g0, [%%g0] %0\n"
+"	membar	#Sync\n"
+	: /* no outputs */
+	: "i" (ASI_INTR_RECEIVE), "i" (ASI_INTR_R)
+	: "g1", "g2");
+}
+
+void notrace init_irqwork_curcpu(void)
+{
+	int cpu = hard_smp_processor_id();
+
+	trap_block[cpu].irq_worklist_pa = 0UL;
+}
+
+/* Please be very careful with register_one_mondo() and
+ * sun4v_register_mondo_queues().
+ *
+ * On SMP this gets invoked from the CPU trampoline before
+ * the cpu has fully taken over the trap table from OBP,
+ * and it's kernel stack + %g6 thread register state is
+ * not fully cooked yet.
+ *
+ * Therefore you cannot make any OBP calls, not even prom_printf,
+ * from these two routines.
+ */
+static void __cpuinit register_one_mondo(unsigned long paddr, unsigned long type, unsigned long qmask)
+{
+	unsigned long num_entries = (qmask + 1) / 64;
+	unsigned long status;
+
+	status = sun4v_cpu_qconf(type, paddr, num_entries);
+	if (status != HV_EOK) {
+		prom_printf("SUN4V: sun4v_cpu_qconf(%lu:%lx:%lu) failed, "
+			    "err %lu\n", type, paddr, num_entries, status);
+		prom_halt();
+	}
+}
+
+void __cpuinit notrace sun4v_register_mondo_queues(int this_cpu)
+{
+	struct trap_per_cpu *tb = &trap_block[this_cpu];
+
+	register_one_mondo(tb->cpu_mondo_pa, HV_CPU_QUEUE_CPU_MONDO,
+			   tb->cpu_mondo_qmask);
+	register_one_mondo(tb->dev_mondo_pa, HV_CPU_QUEUE_DEVICE_MONDO,
+			   tb->dev_mondo_qmask);
+	register_one_mondo(tb->resum_mondo_pa, HV_CPU_QUEUE_RES_ERROR,
+			   tb->resum_qmask);
+	register_one_mondo(tb->nonresum_mondo_pa, HV_CPU_QUEUE_NONRES_ERROR,
+			   tb->nonresum_qmask);
+}
+
+static void __init alloc_one_mondo(unsigned long *pa_ptr, unsigned long qmask)
+{
+	unsigned long size = PAGE_ALIGN(qmask + 1);
+	void *p = __alloc_bootmem(size, size, 0);
+	if (!p) {
+		prom_printf("SUN4V: Error, cannot allocate mondo queue.\n");
+		prom_halt();
+	}
+
+	*pa_ptr = __pa(p);
+}
+
+static void __init alloc_one_kbuf(unsigned long *pa_ptr, unsigned long qmask)
+{
+	unsigned long size = PAGE_ALIGN(qmask + 1);
+	void *p = __alloc_bootmem(size, size, 0);
+
+	if (!p) {
+		prom_printf("SUN4V: Error, cannot allocate kbuf page.\n");
+		prom_halt();
+	}
+
+	*pa_ptr = __pa(p);
+}
+
+static void __init init_cpu_send_mondo_info(struct trap_per_cpu *tb)
+{
+#ifdef CONFIG_SMP
+	void *page;
+
+	BUILD_BUG_ON((NR_CPUS * sizeof(u16)) > (PAGE_SIZE - 64));
+
+	page = alloc_bootmem_pages(PAGE_SIZE);
+	if (!page) {
+		prom_printf("SUN4V: Error, cannot allocate cpu mondo page.\n");
+		prom_halt();
+	}
+
+	tb->cpu_mondo_block_pa = __pa(page);
+	tb->cpu_list_pa = __pa(page + 64);
+#endif
+}
+
+/* Allocate mondo and error queues for all possible cpus.  */
+static void __init sun4v_init_mondo_queues(void)
+{
+	int cpu;
+
+	for_each_possible_cpu(cpu) {
+		struct trap_per_cpu *tb = &trap_block[cpu];
+
+		alloc_one_mondo(&tb->cpu_mondo_pa, tb->cpu_mondo_qmask);
+		alloc_one_mondo(&tb->dev_mondo_pa, tb->dev_mondo_qmask);
+		alloc_one_mondo(&tb->resum_mondo_pa, tb->resum_qmask);
+		alloc_one_kbuf(&tb->resum_kernel_buf_pa, tb->resum_qmask);
+		alloc_one_mondo(&tb->nonresum_mondo_pa, tb->nonresum_qmask);
+		alloc_one_kbuf(&tb->nonresum_kernel_buf_pa,
+			       tb->nonresum_qmask);
+	}
+}
+
+static void __init init_send_mondo_info(void)
+{
+	int cpu;
+
+	for_each_possible_cpu(cpu) {
+		struct trap_per_cpu *tb = &trap_block[cpu];
+
+		init_cpu_send_mondo_info(tb);
+	}
+}
+
+static struct irqaction timer_irq_action = {
+	.name = "timer",
+};
+
+/* Only invoked on boot processor. */
+void __init init_IRQ(void)
+{
+	unsigned long size;
+
+	map_prom_timers();
+	kill_prom_timer();
+
+	size = sizeof(struct ino_bucket) * NUM_IVECS;
+	ivector_table = alloc_bootmem(size);
+	if (!ivector_table) {
+		prom_printf("Fatal error, cannot allocate ivector_table\n");
+		prom_halt();
+	}
+	__flush_dcache_range((unsigned long) ivector_table,
+			     ((unsigned long) ivector_table) + size);
+
+	ivector_table_pa = __pa(ivector_table);
+
+	if (tlb_type == hypervisor)
+		sun4v_init_mondo_queues();
+
+	init_send_mondo_info();
+
+	if (tlb_type == hypervisor) {
+		/* Load up the boot cpu's entries.  */
+		sun4v_register_mondo_queues(hard_smp_processor_id());
+	}
+
+	/* We need to clear any IRQ's pending in the soft interrupt
+	 * registers, a spurious one could be left around from the
+	 * PROM timer which we just disabled.
+	 */
+	clear_softint(get_softint());
+
+	/* Now that ivector table is initialized, it is safe
+	 * to receive IRQ vector traps.  We will normally take
+	 * one or two right now, in case some device PROM used
+	 * to boot us wants to speak to us.  We just ignore them.
+	 */
+	__asm__ __volatile__("rdpr	%%pstate, %%g1\n\t"
+			     "or	%%g1, %0, %%g1\n\t"
+			     "wrpr	%%g1, 0x0, %%pstate"
+			     : /* No outputs */
+			     : "i" (PSTATE_IE)
+			     : "g1");
+
+	irq_desc[0].action = &timer_irq_action;
+}
diff --git a/arch/sparc/kernel/itlb_miss.S b/arch/sparc/kernel/itlb_miss.S
new file mode 100644
index 000000000000..5a8377b54955
--- /dev/null
+++ b/arch/sparc/kernel/itlb_miss.S
@@ -0,0 +1,39 @@
+/* ITLB ** ICACHE line 1: Context 0 check and TSB load	*/
+	ldxa	[%g0] ASI_IMMU_TSB_8KB_PTR, %g1	! Get TSB 8K pointer
+	ldxa	[%g0] ASI_IMMU, %g6		! Get TAG TARGET
+	srlx	%g6, 48, %g5			! Get context
+	sllx	%g6, 22, %g6			! Zero out context
+	brz,pn	%g5, kvmap_itlb			! Context 0 processing
+	 srlx	%g6, 22, %g6			! Delay slot
+	TSB_LOAD_QUAD(%g1, %g4)			! Load TSB entry
+	cmp	%g4, %g6			! Compare TAG
+
+/* ITLB ** ICACHE line 2: TSB compare and TLB load	*/
+	bne,pn	%xcc, tsb_miss_itlb		! Miss
+	 mov	FAULT_CODE_ITLB, %g3
+	sethi	%hi(_PAGE_EXEC_4U), %g4
+	andcc	%g5, %g4, %g0			! Executable?
+	be,pn	%xcc, tsb_do_fault
+	 nop					! Delay slot, fill me
+	stxa	%g5, [%g0] ASI_ITLB_DATA_IN	! Load TLB
+	retry					! Trap done
+
+/* ITLB ** ICACHE line 3: 				*/
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+/* ITLB ** ICACHE line 4: 				*/
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
diff --git a/arch/sparc/kernel/ivec.S b/arch/sparc/kernel/ivec.S
new file mode 100644
index 000000000000..d29f92ebca5e
--- /dev/null
+++ b/arch/sparc/kernel/ivec.S
@@ -0,0 +1,51 @@
+	/* The registers for cross calls will be:
+	 *
+	 * DATA 0: [low 32-bits]  Address of function to call, jmp to this
+	 *         [high 32-bits] MMU Context Argument 0, place in %g5
+	 * DATA 1: Address Argument 1, place in %g1
+	 * DATA 2: Address Argument 2, place in %g7
+	 *
+	 * With this method we can do most of the cross-call tlb/cache
+	 * flushing very quickly.
+	 */
+	.align		32
+	.globl		do_ivec
+	.type		do_ivec,#function
+do_ivec:
+	mov		0x40, %g3
+	ldxa		[%g3 + %g0] ASI_INTR_R, %g3
+	sethi		%hi(KERNBASE), %g4
+	cmp		%g3, %g4
+	bgeu,pn		%xcc, do_ivec_xcall
+	 srlx		%g3, 32, %g5
+	stxa		%g0, [%g0] ASI_INTR_RECEIVE
+	membar		#Sync
+
+	sethi		%hi(ivector_table_pa), %g2
+	ldx		[%g2 + %lo(ivector_table_pa)], %g2
+	sllx		%g3, 4, %g3
+	add		%g2, %g3, %g3
+
+	TRAP_LOAD_IRQ_WORK_PA(%g6, %g1)
+
+	ldx		[%g6], %g5
+	stxa		%g5, [%g3] ASI_PHYS_USE_EC
+	stx		%g3, [%g6]
+	wr		%g0, 1 << PIL_DEVICE_IRQ, %set_softint
+	retry
+do_ivec_xcall:
+	mov		0x50, %g1
+	ldxa		[%g1 + %g0] ASI_INTR_R, %g1
+	srl		%g3, 0, %g3
+
+	mov		0x60, %g7
+	ldxa		[%g7 + %g0] ASI_INTR_R, %g7
+	stxa		%g0, [%g0] ASI_INTR_RECEIVE
+	membar		#Sync
+	ba,pt		%xcc, 1f
+	 nop
+
+	.align		32
+1:	jmpl		%g3, %g0
+	 nop
+	.size		do_ivec,.-do_ivec
diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h
new file mode 100644
index 000000000000..81a972e8d8ea
--- /dev/null
+++ b/arch/sparc/kernel/kernel.h
@@ -0,0 +1,31 @@
+#ifndef __SPARC_KERNEL_H
+#define __SPARC_KERNEL_H
+
+#include <linux/interrupt.h>
+
+/* cpu.c */
+extern const char *sparc_cpu_type;
+extern const char *sparc_fpu_type;
+
+extern unsigned int fsr_storage;
+
+#ifdef CONFIG_SPARC32
+/* cpu.c */
+extern void cpu_probe(void);
+
+/* traps_32.c */
+extern void handle_hw_divzero(struct pt_regs *regs, unsigned long pc,
+                              unsigned long npc, unsigned long psr);
+/* muldiv.c */
+extern int do_user_muldiv (struct pt_regs *, unsigned long);
+
+/* irq_32.c */
+extern struct irqaction static_irqaction[];
+extern int static_irq_count;
+extern spinlock_t irq_action_lock;
+
+extern void unexpected_irq(int irq, void *dev_id, struct pt_regs * regs);
+
+#else /* CONFIG_SPARC32 */
+#endif /* CONFIG_SPARC32 */
+#endif /* !(__SPARC_KERNEL_H) */
diff --git a/arch/sparc/kernel/kgdb.c b/arch/sparc/kernel/kgdb_32.c
index 757805ce02ee..757805ce02ee 100644
--- a/arch/sparc/kernel/kgdb.c
+++ b/arch/sparc/kernel/kgdb_32.c
diff --git a/arch/sparc/kernel/kgdb_64.c b/arch/sparc/kernel/kgdb_64.c
new file mode 100644
index 000000000000..fefbe6dc51be
--- /dev/null
+++ b/arch/sparc/kernel/kgdb_64.c
@@ -0,0 +1,186 @@
+/* kgdb.c: KGDB support for 64-bit sparc.
+ *
+ * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kgdb.h>
+#include <linux/kdebug.h>
+
+#include <asm/kdebug.h>
+#include <asm/ptrace.h>
+#include <asm/irq.h>
+
+void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+	struct reg_window *win;
+	int i;
+
+	gdb_regs[GDB_G0] = 0;
+	for (i = 0; i < 15; i++)
+		gdb_regs[GDB_G1 + i] = regs->u_regs[UREG_G1 + i];
+
+	win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
+	for (i = 0; i < 8; i++)
+		gdb_regs[GDB_L0 + i] = win->locals[i];
+	for (i = 0; i < 8; i++)
+		gdb_regs[GDB_I0 + i] = win->ins[i];
+
+	for (i = GDB_F0; i <= GDB_F62; i++)
+		gdb_regs[i] = 0;
+
+	gdb_regs[GDB_PC] = regs->tpc;
+	gdb_regs[GDB_NPC] = regs->tnpc;
+	gdb_regs[GDB_STATE] = regs->tstate;
+	gdb_regs[GDB_FSR] = 0;
+	gdb_regs[GDB_FPRS] = 0;
+	gdb_regs[GDB_Y] = regs->y;
+}
+
+void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
+{
+	struct thread_info *t = task_thread_info(p);
+	extern unsigned int switch_to_pc;
+	extern unsigned int ret_from_syscall;
+	struct reg_window *win;
+	unsigned long pc, cwp;
+	int i;
+
+	for (i = GDB_G0; i < GDB_G6; i++)
+		gdb_regs[i] = 0;
+	gdb_regs[GDB_G6] = (unsigned long) t;
+	gdb_regs[GDB_G7] = (unsigned long) p;
+	for (i = GDB_O0; i < GDB_SP; i++)
+		gdb_regs[i] = 0;
+	gdb_regs[GDB_SP] = t->ksp;
+	gdb_regs[GDB_O7] = 0;
+
+	win = (struct reg_window *) (t->ksp + STACK_BIAS);
+	for (i = 0; i < 8; i++)
+		gdb_regs[GDB_L0 + i] = win->locals[i];
+	for (i = 0; i < 8; i++)
+		gdb_regs[GDB_I0 + i] = win->ins[i];
+
+	for (i = GDB_F0; i <= GDB_F62; i++)
+		gdb_regs[i] = 0;
+
+	if (t->new_child)
+		pc = (unsigned long) &ret_from_syscall;
+	else
+		pc = (unsigned long) &switch_to_pc;
+
+	gdb_regs[GDB_PC] = pc;
+	gdb_regs[GDB_NPC] = pc + 4;
+
+	cwp = __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP];
+
+	gdb_regs[GDB_STATE] = (TSTATE_PRIV | TSTATE_IE | cwp);
+	gdb_regs[GDB_FSR] = 0;
+	gdb_regs[GDB_FPRS] = 0;
+	gdb_regs[GDB_Y] = 0;
+}
+
+void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+	struct reg_window *win;
+	int i;
+
+	for (i = 0; i < 15; i++)
+		regs->u_regs[UREG_G1 + i] = gdb_regs[GDB_G1 + i];
+
+	/* If the TSTATE register is changing, we have to preserve
+	 * the CWP field, otherwise window save/restore explodes.
+	 */
+	if (regs->tstate != gdb_regs[GDB_STATE]) {
+		unsigned long cwp = regs->tstate & TSTATE_CWP;
+
+		regs->tstate = (gdb_regs[GDB_STATE] & ~TSTATE_CWP) | cwp;
+	}
+
+	regs->tpc = gdb_regs[GDB_PC];
+	regs->tnpc = gdb_regs[GDB_NPC];
+	regs->y = gdb_regs[GDB_Y];
+
+	win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
+	for (i = 0; i < 8; i++)
+		win->locals[i] = gdb_regs[GDB_L0 + i];
+	for (i = 0; i < 8; i++)
+		win->ins[i] = gdb_regs[GDB_I0 + i];
+}
+
+#ifdef CONFIG_SMP
+void smp_kgdb_capture_client(struct pt_regs *regs)
+{
+	unsigned long flags;
+
+	__asm__ __volatile__("rdpr      %%pstate, %0\n\t"
+			     "wrpr      %0, %1, %%pstate"
+			     : "=r" (flags)
+			     : "i" (PSTATE_IE));
+
+	flushw_all();
+
+	if (atomic_read(&kgdb_active) != -1)
+		kgdb_nmicallback(raw_smp_processor_id(), regs);
+
+	__asm__ __volatile__("wrpr	%0, 0, %%pstate"
+			     : : "r" (flags));
+}
+#endif
+
+int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
+			       char *remcomInBuffer, char *remcomOutBuffer,
+			       struct pt_regs *linux_regs)
+{
+	unsigned long addr;
+	char *ptr;
+
+	switch (remcomInBuffer[0]) {
+	case 'c':
+		/* try to read optional parameter, pc unchanged if no parm */
+		ptr = &remcomInBuffer[1];
+		if (kgdb_hex2long(&ptr, &addr)) {
+			linux_regs->tpc = addr;
+			linux_regs->tnpc = addr + 4;
+		}
+		/* fallthru */
+
+	case 'D':
+	case 'k':
+		if (linux_regs->tpc == (unsigned long) arch_kgdb_breakpoint) {
+			linux_regs->tpc = linux_regs->tnpc;
+			linux_regs->tnpc += 4;
+		}
+		return 0;
+	}
+	return -1;
+}
+
+asmlinkage void kgdb_trap(unsigned long trap_level, struct pt_regs *regs)
+{
+	unsigned long flags;
+
+	if (user_mode(regs)) {
+		bad_trap(regs, trap_level);
+		return;
+	}
+
+	flushw_all();
+
+	local_irq_save(flags);
+	kgdb_handle_exception(0x172, SIGTRAP, 0, regs);
+	local_irq_restore(flags);
+}
+
+int kgdb_arch_init(void)
+{
+	return 0;
+}
+
+void kgdb_arch_exit(void)
+{
+}
+
+struct kgdb_arch arch_kgdb_ops = {
+	/* Breakpoint instruction: ta 0x72 */
+	.gdb_bpt_instr		= { 0x91, 0xd0, 0x20, 0x72 },
+};
diff --git a/arch/sparc/kernel/kprobes.c b/arch/sparc/kernel/kprobes.c
new file mode 100644
index 000000000000..201a6e547e4a
--- /dev/null
+++ b/arch/sparc/kernel/kprobes.c
@@ -0,0 +1,593 @@
+/* arch/sparc64/kernel/kprobes.c
+ *
+ * Copyright (C) 2004 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/kprobes.h>
+#include <linux/module.h>
+#include <linux/kdebug.h>
+#include <asm/signal.h>
+#include <asm/cacheflush.h>
+#include <asm/uaccess.h>
+
+/* We do not have hardware single-stepping on sparc64.
+ * So we implement software single-stepping with breakpoint
+ * traps.  The top-level scheme is similar to that used
+ * in the x86 kprobes implementation.
+ *
+ * In the kprobe->ainsn.insn[] array we store the original
+ * instruction at index zero and a break instruction at
+ * index one.
+ *
+ * When we hit a kprobe we:
+ * - Run the pre-handler
+ * - Remember "regs->tnpc" and interrupt level stored in
+ *   "regs->tstate" so we can restore them later
+ * - Disable PIL interrupts
+ * - Set regs->tpc to point to kprobe->ainsn.insn[0]
+ * - Set regs->tnpc to point to kprobe->ainsn.insn[1]
+ * - Mark that we are actively in a kprobe
+ *
+ * At this point we wait for the second breakpoint at
+ * kprobe->ainsn.insn[1] to hit.  When it does we:
+ * - Run the post-handler
+ * - Set regs->tpc to "remembered" regs->tnpc stored above,
+ *   restore the PIL interrupt level in "regs->tstate" as well
+ * - Make any adjustments necessary to regs->tnpc in order
+ *   to handle relative branches correctly.  See below.
+ * - Mark that we are no longer actively in a kprobe.
+ */
+
+DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
+DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
+
+struct kretprobe_blackpoint kretprobe_blacklist[] = {{NULL, NULL}};
+
+int __kprobes arch_prepare_kprobe(struct kprobe *p)
+{
+	p->ainsn.insn[0] = *p->addr;
+	flushi(&p->ainsn.insn[0]);
+
+	p->ainsn.insn[1] = BREAKPOINT_INSTRUCTION_2;
+	flushi(&p->ainsn.insn[1]);
+
+	p->opcode = *p->addr;
+	return 0;
+}
+
+void __kprobes arch_arm_kprobe(struct kprobe *p)
+{
+	*p->addr = BREAKPOINT_INSTRUCTION;
+	flushi(p->addr);
+}
+
+void __kprobes arch_disarm_kprobe(struct kprobe *p)
+{
+	*p->addr = p->opcode;
+	flushi(p->addr);
+}
+
+static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
+{
+	kcb->prev_kprobe.kp = kprobe_running();
+	kcb->prev_kprobe.status = kcb->kprobe_status;
+	kcb->prev_kprobe.orig_tnpc = kcb->kprobe_orig_tnpc;
+	kcb->prev_kprobe.orig_tstate_pil = kcb->kprobe_orig_tstate_pil;
+}
+
+static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
+{
+	__get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp;
+	kcb->kprobe_status = kcb->prev_kprobe.status;
+	kcb->kprobe_orig_tnpc = kcb->prev_kprobe.orig_tnpc;
+	kcb->kprobe_orig_tstate_pil = kcb->prev_kprobe.orig_tstate_pil;
+}
+
+static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
+				struct kprobe_ctlblk *kcb)
+{
+	__get_cpu_var(current_kprobe) = p;
+	kcb->kprobe_orig_tnpc = regs->tnpc;
+	kcb->kprobe_orig_tstate_pil = (regs->tstate & TSTATE_PIL);
+}
+
+static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs,
+			struct kprobe_ctlblk *kcb)
+{
+	regs->tstate |= TSTATE_PIL;
+
+	/*single step inline, if it a breakpoint instruction*/
+	if (p->opcode == BREAKPOINT_INSTRUCTION) {
+		regs->tpc = (unsigned long) p->addr;
+		regs->tnpc = kcb->kprobe_orig_tnpc;
+	} else {
+		regs->tpc = (unsigned long) &p->ainsn.insn[0];
+		regs->tnpc = (unsigned long) &p->ainsn.insn[1];
+	}
+}
+
+static int __kprobes kprobe_handler(struct pt_regs *regs)
+{
+	struct kprobe *p;
+	void *addr = (void *) regs->tpc;
+	int ret = 0;
+	struct kprobe_ctlblk *kcb;
+
+	/*
+	 * We don't want to be preempted for the entire
+	 * duration of kprobe processing
+	 */
+	preempt_disable();
+	kcb = get_kprobe_ctlblk();
+
+	if (kprobe_running()) {
+		p = get_kprobe(addr);
+		if (p) {
+			if (kcb->kprobe_status == KPROBE_HIT_SS) {
+				regs->tstate = ((regs->tstate & ~TSTATE_PIL) |
+					kcb->kprobe_orig_tstate_pil);
+				goto no_kprobe;
+			}
+			/* We have reentered the kprobe_handler(), since
+			 * another probe was hit while within the handler.
+			 * We here save the original kprobes variables and
+			 * just single step on the instruction of the new probe
+			 * without calling any user handlers.
+			 */
+			save_previous_kprobe(kcb);
+			set_current_kprobe(p, regs, kcb);
+			kprobes_inc_nmissed_count(p);
+			kcb->kprobe_status = KPROBE_REENTER;
+			prepare_singlestep(p, regs, kcb);
+			return 1;
+		} else {
+			if (*(u32 *)addr != BREAKPOINT_INSTRUCTION) {
+			/* The breakpoint instruction was removed by
+			 * another cpu right after we hit, no further
+			 * handling of this interrupt is appropriate
+			 */
+				ret = 1;
+				goto no_kprobe;
+			}
+			p = __get_cpu_var(current_kprobe);
+			if (p->break_handler && p->break_handler(p, regs))
+				goto ss_probe;
+		}
+		goto no_kprobe;
+	}
+
+	p = get_kprobe(addr);
+	if (!p) {
+		if (*(u32 *)addr != BREAKPOINT_INSTRUCTION) {
+			/*
+			 * The breakpoint instruction was removed right
+			 * after we hit it.  Another cpu has removed
+			 * either a probepoint or a debugger breakpoint
+			 * at this address.  In either case, no further
+			 * handling of this interrupt is appropriate.
+			 */
+			ret = 1;
+		}
+		/* Not one of ours: let kernel handle it */
+		goto no_kprobe;
+	}
+
+	set_current_kprobe(p, regs, kcb);
+	kcb->kprobe_status = KPROBE_HIT_ACTIVE;
+	if (p->pre_handler && p->pre_handler(p, regs))
+		return 1;
+
+ss_probe:
+	prepare_singlestep(p, regs, kcb);
+	kcb->kprobe_status = KPROBE_HIT_SS;
+	return 1;
+
+no_kprobe:
+	preempt_enable_no_resched();
+	return ret;
+}
+
+/* If INSN is a relative control transfer instruction,
+ * return the corrected branch destination value.
+ *
+ * regs->tpc and regs->tnpc still hold the values of the
+ * program counters at the time of trap due to the execution
+ * of the BREAKPOINT_INSTRUCTION_2 at p->ainsn.insn[1]
+ * 
+ */
+static unsigned long __kprobes relbranch_fixup(u32 insn, struct kprobe *p,
+					       struct pt_regs *regs)
+{
+	unsigned long real_pc = (unsigned long) p->addr;
+
+	/* Branch not taken, no mods necessary.  */
+	if (regs->tnpc == regs->tpc + 0x4UL)
+		return real_pc + 0x8UL;
+
+	/* The three cases are call, branch w/prediction,
+	 * and traditional branch.
+	 */
+	if ((insn & 0xc0000000) == 0x40000000 ||
+	    (insn & 0xc1c00000) == 0x00400000 ||
+	    (insn & 0xc1c00000) == 0x00800000) {
+		unsigned long ainsn_addr;
+
+		ainsn_addr = (unsigned long) &p->ainsn.insn[0];
+
+		/* The instruction did all the work for us
+		 * already, just apply the offset to the correct
+		 * instruction location.
+		 */
+		return (real_pc + (regs->tnpc - ainsn_addr));
+	}
+
+	/* It is jmpl or some other absolute PC modification instruction,
+	 * leave NPC as-is.
+	 */
+	return regs->tnpc;
+}
+
+/* If INSN is an instruction which writes it's PC location
+ * into a destination register, fix that up.
+ */
+static void __kprobes retpc_fixup(struct pt_regs *regs, u32 insn,
+				  unsigned long real_pc)
+{
+	unsigned long *slot = NULL;
+
+	/* Simplest case is 'call', which always uses %o7 */
+	if ((insn & 0xc0000000) == 0x40000000) {
+		slot = &regs->u_regs[UREG_I7];
+	}
+
+	/* 'jmpl' encodes the register inside of the opcode */
+	if ((insn & 0xc1f80000) == 0x81c00000) {
+		unsigned long rd = ((insn >> 25) & 0x1f);
+
+		if (rd <= 15) {
+			slot = &regs->u_regs[rd];
+		} else {
+			/* Hard case, it goes onto the stack. */
+			flushw_all();
+
+			rd -= 16;
+			slot = (unsigned long *)
+				(regs->u_regs[UREG_FP] + STACK_BIAS);
+			slot += rd;
+		}
+	}
+	if (slot != NULL)
+		*slot = real_pc;
+}
+
+/*
+ * Called after single-stepping.  p->addr is the address of the
+ * instruction which has been replaced by the breakpoint
+ * instruction.  To avoid the SMP problems that can occur when we
+ * temporarily put back the original opcode to single-step, we
+ * single-stepped a copy of the instruction.  The address of this
+ * copy is &p->ainsn.insn[0].
+ *
+ * This function prepares to return from the post-single-step
+ * breakpoint trap.
+ */
+static void __kprobes resume_execution(struct kprobe *p,
+		struct pt_regs *regs, struct kprobe_ctlblk *kcb)
+{
+	u32 insn = p->ainsn.insn[0];
+
+	regs->tnpc = relbranch_fixup(insn, p, regs);
+
+	/* This assignment must occur after relbranch_fixup() */
+	regs->tpc = kcb->kprobe_orig_tnpc;
+
+	retpc_fixup(regs, insn, (unsigned long) p->addr);
+
+	regs->tstate = ((regs->tstate & ~TSTATE_PIL) |
+			kcb->kprobe_orig_tstate_pil);
+}
+
+static int __kprobes post_kprobe_handler(struct pt_regs *regs)
+{
+	struct kprobe *cur = kprobe_running();
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+	if (!cur)
+		return 0;
+
+	if ((kcb->kprobe_status != KPROBE_REENTER) && cur->post_handler) {
+		kcb->kprobe_status = KPROBE_HIT_SSDONE;
+		cur->post_handler(cur, regs, 0);
+	}
+
+	resume_execution(cur, regs, kcb);
+
+	/*Restore back the original saved kprobes variables and continue. */
+	if (kcb->kprobe_status == KPROBE_REENTER) {
+		restore_previous_kprobe(kcb);
+		goto out;
+	}
+	reset_current_kprobe();
+out:
+	preempt_enable_no_resched();
+
+	return 1;
+}
+
+int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+{
+	struct kprobe *cur = kprobe_running();
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	const struct exception_table_entry *entry;
+
+	switch(kcb->kprobe_status) {
+	case KPROBE_HIT_SS:
+	case KPROBE_REENTER:
+		/*
+		 * We are here because the instruction being single
+		 * stepped caused a page fault. We reset the current
+		 * kprobe and the tpc points back to the probe address
+		 * and allow the page fault handler to continue as a
+		 * normal page fault.
+		 */
+		regs->tpc = (unsigned long)cur->addr;
+		regs->tnpc = kcb->kprobe_orig_tnpc;
+		regs->tstate = ((regs->tstate & ~TSTATE_PIL) |
+				kcb->kprobe_orig_tstate_pil);
+		if (kcb->kprobe_status == KPROBE_REENTER)
+			restore_previous_kprobe(kcb);
+		else
+			reset_current_kprobe();
+		preempt_enable_no_resched();
+		break;
+	case KPROBE_HIT_ACTIVE:
+	case KPROBE_HIT_SSDONE:
+		/*
+		 * We increment the nmissed count for accounting,
+		 * we can also use npre/npostfault count for accouting
+		 * these specific fault cases.
+		 */
+		kprobes_inc_nmissed_count(cur);
+
+		/*
+		 * We come here because instructions in the pre/post
+		 * handler caused the page_fault, this could happen
+		 * if handler tries to access user space by
+		 * copy_from_user(), get_user() etc. Let the
+		 * user-specified handler try to fix it first.
+		 */
+		if (cur->fault_handler && cur->fault_handler(cur, regs, trapnr))
+			return 1;
+
+		/*
+		 * In case the user-specified fault handler returned
+		 * zero, try to fix up.
+		 */
+
+		entry = search_exception_tables(regs->tpc);
+		if (entry) {
+			regs->tpc = entry->fixup;
+			regs->tnpc = regs->tpc + 4;
+			return 1;
+		}
+
+		/*
+		 * fixup_exception() could not handle it,
+		 * Let do_page_fault() fix it.
+		 */
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+/*
+ * Wrapper routine to for handling exceptions.
+ */
+int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
+				       unsigned long val, void *data)
+{
+	struct die_args *args = (struct die_args *)data;
+	int ret = NOTIFY_DONE;
+
+	if (args->regs && user_mode(args->regs))
+		return ret;
+
+	switch (val) {
+	case DIE_DEBUG:
+		if (kprobe_handler(args->regs))
+			ret = NOTIFY_STOP;
+		break;
+	case DIE_DEBUG_2:
+		if (post_kprobe_handler(args->regs))
+			ret = NOTIFY_STOP;
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+asmlinkage void __kprobes kprobe_trap(unsigned long trap_level,
+				      struct pt_regs *regs)
+{
+	BUG_ON(trap_level != 0x170 && trap_level != 0x171);
+
+	if (user_mode(regs)) {
+		local_irq_enable();
+		bad_trap(regs, trap_level);
+		return;
+	}
+
+	/* trap_level == 0x170 --> ta 0x70
+	 * trap_level == 0x171 --> ta 0x71
+	 */
+	if (notify_die((trap_level == 0x170) ? DIE_DEBUG : DIE_DEBUG_2,
+		       (trap_level == 0x170) ? "debug" : "debug_2",
+		       regs, 0, trap_level, SIGTRAP) != NOTIFY_STOP)
+		bad_trap(regs, trap_level);
+}
+
+/* Jprobes support.  */
+int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
+{
+	struct jprobe *jp = container_of(p, struct jprobe, kp);
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+	memcpy(&(kcb->jprobe_saved_regs), regs, sizeof(*regs));
+
+	regs->tpc  = (unsigned long) jp->entry;
+	regs->tnpc = ((unsigned long) jp->entry) + 0x4UL;
+	regs->tstate |= TSTATE_PIL;
+
+	return 1;
+}
+
+void __kprobes jprobe_return(void)
+{
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	register unsigned long orig_fp asm("g1");
+
+	orig_fp = kcb->jprobe_saved_regs.u_regs[UREG_FP];
+	__asm__ __volatile__("\n"
+"1:	cmp		%%sp, %0\n\t"
+	"blu,a,pt	%%xcc, 1b\n\t"
+	" restore\n\t"
+	".globl		jprobe_return_trap_instruction\n"
+"jprobe_return_trap_instruction:\n\t"
+	"ta		0x70"
+	: /* no outputs */
+	: "r" (orig_fp));
+}
+
+extern void jprobe_return_trap_instruction(void);
+
+int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
+{
+	u32 *addr = (u32 *) regs->tpc;
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+	if (addr == (u32 *) jprobe_return_trap_instruction) {
+		memcpy(regs, &(kcb->jprobe_saved_regs), sizeof(*regs));
+		preempt_enable_no_resched();
+		return 1;
+	}
+	return 0;
+}
+
+/* The value stored in the return address register is actually 2
+ * instructions before where the callee will return to.
+ * Sequences usually look something like this
+ *
+ *		call	some_function	<--- return register points here
+ *		 nop			<--- call delay slot
+ *		whatever		<--- where callee returns to
+ *
+ * To keep trampoline_probe_handler logic simpler, we normalize the
+ * value kept in ri->ret_addr so we don't need to keep adjusting it
+ * back and forth.
+ */
+void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
+				      struct pt_regs *regs)
+{
+	ri->ret_addr = (kprobe_opcode_t *)(regs->u_regs[UREG_RETPC] + 8);
+
+	/* Replace the return addr with trampoline addr */
+	regs->u_regs[UREG_RETPC] =
+		((unsigned long)kretprobe_trampoline) - 8;
+}
+
+/*
+ * Called when the probe at kretprobe trampoline is hit
+ */
+int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
+{
+	struct kretprobe_instance *ri = NULL;
+	struct hlist_head *head, empty_rp;
+	struct hlist_node *node, *tmp;
+	unsigned long flags, orig_ret_address = 0;
+	unsigned long trampoline_address =(unsigned long)&kretprobe_trampoline;
+
+	INIT_HLIST_HEAD(&empty_rp);
+	kretprobe_hash_lock(current, &head, &flags);
+
+	/*
+	 * It is possible to have multiple instances associated with a given
+	 * task either because an multiple functions in the call path
+	 * have a return probe installed on them, and/or more then one return
+	 * return probe was registered for a target function.
+	 *
+	 * We can handle this because:
+	 *     - instances are always inserted at the head of the list
+	 *     - when multiple return probes are registered for the same
+	 *       function, the first instance's ret_addr will point to the
+	 *       real return address, and all the rest will point to
+	 *       kretprobe_trampoline
+	 */
+	hlist_for_each_entry_safe(ri, node, tmp, head, hlist) {
+		if (ri->task != current)
+			/* another task is sharing our hash bucket */
+			continue;
+
+		if (ri->rp && ri->rp->handler)
+			ri->rp->handler(ri, regs);
+
+		orig_ret_address = (unsigned long)ri->ret_addr;
+		recycle_rp_inst(ri, &empty_rp);
+
+		if (orig_ret_address != trampoline_address)
+			/*
+			 * This is the real return address. Any other
+			 * instances associated with this task are for
+			 * other calls deeper on the call stack
+			 */
+			break;
+	}
+
+	kretprobe_assert(ri, orig_ret_address, trampoline_address);
+	regs->tpc = orig_ret_address;
+	regs->tnpc = orig_ret_address + 4;
+
+	reset_current_kprobe();
+	kretprobe_hash_unlock(current, &flags);
+	preempt_enable_no_resched();
+
+	hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) {
+		hlist_del(&ri->hlist);
+		kfree(ri);
+	}
+	/*
+	 * By returning a non-zero value, we are telling
+	 * kprobe_handler() that we don't want the post_handler
+	 * to run (and have re-enabled preemption)
+	 */
+	return 1;
+}
+
+void kretprobe_trampoline_holder(void)
+{
+	asm volatile(".global kretprobe_trampoline\n"
+		     "kretprobe_trampoline:\n"
+		     "\tnop\n"
+		     "\tnop\n");
+}
+static struct kprobe trampoline_p = {
+	.addr = (kprobe_opcode_t *) &kretprobe_trampoline,
+	.pre_handler = trampoline_probe_handler
+};
+
+int __init arch_init_kprobes(void)
+{
+	return register_kprobe(&trampoline_p);
+}
+
+int __kprobes arch_trampoline_kprobe(struct kprobe *p)
+{
+	if (p->addr == (kprobe_opcode_t *)&kretprobe_trampoline)
+		return 1;
+
+	return 0;
+}
diff --git a/arch/sparc/kernel/kstack.h b/arch/sparc/kernel/kstack.h
new file mode 100644
index 000000000000..4248d969272f
--- /dev/null
+++ b/arch/sparc/kernel/kstack.h
@@ -0,0 +1,60 @@
+#ifndef _KSTACK_H
+#define _KSTACK_H
+
+#include <linux/thread_info.h>
+#include <linux/sched.h>
+#include <asm/ptrace.h>
+#include <asm/irq.h>
+
+/* SP must be STACK_BIAS adjusted already.  */
+static inline bool kstack_valid(struct thread_info *tp, unsigned long sp)
+{
+	unsigned long base = (unsigned long) tp;
+
+	if (sp >= (base + sizeof(struct thread_info)) &&
+	    sp <= (base + THREAD_SIZE - sizeof(struct sparc_stackf)))
+		return true;
+
+	if (hardirq_stack[tp->cpu]) {
+		base = (unsigned long) hardirq_stack[tp->cpu];
+		if (sp >= base &&
+		    sp <= (base + THREAD_SIZE - sizeof(struct sparc_stackf)))
+			return true;
+		base = (unsigned long) softirq_stack[tp->cpu];
+		if (sp >= base &&
+		    sp <= (base + THREAD_SIZE - sizeof(struct sparc_stackf)))
+			return true;
+	}
+	return false;
+}
+
+/* Does "regs" point to a valid pt_regs trap frame?  */
+static inline bool kstack_is_trap_frame(struct thread_info *tp, struct pt_regs *regs)
+{
+	unsigned long base = (unsigned long) tp;
+	unsigned long addr = (unsigned long) regs;
+
+	if (addr >= base &&
+	    addr <= (base + THREAD_SIZE - sizeof(*regs)))
+		goto check_magic;
+
+	if (hardirq_stack[tp->cpu]) {
+		base = (unsigned long) hardirq_stack[tp->cpu];
+		if (addr >= base &&
+		    addr <= (base + THREAD_SIZE - sizeof(*regs)))
+			goto check_magic;
+		base = (unsigned long) softirq_stack[tp->cpu];
+		if (addr >= base &&
+		    addr <= (base + THREAD_SIZE - sizeof(*regs)))
+			goto check_magic;
+	}
+	return false;
+
+check_magic:
+	if ((regs->magic & ~0x1ff) == PT_REGS_MAGIC)
+		return true;
+	return false;
+
+}
+
+#endif /* _KSTACK_H */
diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S
new file mode 100644
index 000000000000..cef8defcd7a9
--- /dev/null
+++ b/arch/sparc/kernel/ktlb.S
@@ -0,0 +1,304 @@
+/* arch/sparc64/kernel/ktlb.S: Kernel mapping TLB miss handling.
+ *
+ * Copyright (C) 1995, 1997, 2005, 2008 David S. Miller <davem@davemloft.net>
+ * Copyright (C) 1996 Eddie C. Dost        (ecd@brainaid.de)
+ * Copyright (C) 1996 Miguel de Icaza      (miguel@nuclecu.unam.mx)
+ * Copyright (C) 1996,98,99 Jakub Jelinek  (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <asm/head.h>
+#include <asm/asi.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/tsb.h>
+
+	.text
+	.align		32
+
+kvmap_itlb:
+	/* g6: TAG TARGET */
+	mov		TLB_TAG_ACCESS, %g4
+	ldxa		[%g4] ASI_IMMU, %g4
+
+	/* sun4v_itlb_miss branches here with the missing virtual
+	 * address already loaded into %g4
+	 */
+kvmap_itlb_4v:
+
+kvmap_itlb_nonlinear:
+	/* Catch kernel NULL pointer calls.  */
+	sethi		%hi(PAGE_SIZE), %g5
+	cmp		%g4, %g5
+	bleu,pn		%xcc, kvmap_dtlb_longpath
+	 nop
+
+	KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_itlb_load)
+
+kvmap_itlb_tsb_miss:
+	sethi		%hi(LOW_OBP_ADDRESS), %g5
+	cmp		%g4, %g5
+	blu,pn		%xcc, kvmap_itlb_vmalloc_addr
+	 mov		0x1, %g5
+	sllx		%g5, 32, %g5
+	cmp		%g4, %g5
+	blu,pn		%xcc, kvmap_itlb_obp
+	 nop
+
+kvmap_itlb_vmalloc_addr:
+	KERN_PGTABLE_WALK(%g4, %g5, %g2, kvmap_itlb_longpath)
+
+	KTSB_LOCK_TAG(%g1, %g2, %g7)
+
+	/* Load and check PTE.  */
+	ldxa		[%g5] ASI_PHYS_USE_EC, %g5
+	mov		1, %g7
+	sllx		%g7, TSB_TAG_INVALID_BIT, %g7
+	brgez,a,pn	%g5, kvmap_itlb_longpath
+	 KTSB_STORE(%g1, %g7)
+
+	KTSB_WRITE(%g1, %g5, %g6)
+
+	/* fallthrough to TLB load */
+
+kvmap_itlb_load:
+
+661:	stxa		%g5, [%g0] ASI_ITLB_DATA_IN
+	retry
+	.section	.sun4v_2insn_patch, "ax"
+	.word		661b
+	nop
+	nop
+	.previous
+
+	/* For sun4v the ASI_ITLB_DATA_IN store and the retry
+	 * instruction get nop'd out and we get here to branch
+	 * to the sun4v tlb load code.  The registers are setup
+	 * as follows:
+	 *
+	 * %g4: vaddr
+	 * %g5: PTE
+	 * %g6:	TAG
+	 *
+	 * The sun4v TLB load wants the PTE in %g3 so we fix that
+	 * up here.
+	 */
+	ba,pt		%xcc, sun4v_itlb_load
+	 mov		%g5, %g3
+
+kvmap_itlb_longpath:
+
+661:	rdpr	%pstate, %g5
+	wrpr	%g5, PSTATE_AG | PSTATE_MG, %pstate
+	.section .sun4v_2insn_patch, "ax"
+	.word	661b
+	SET_GL(1)
+	nop
+	.previous
+
+	rdpr	%tpc, %g5
+	ba,pt	%xcc, sparc64_realfault_common
+	 mov	FAULT_CODE_ITLB, %g4
+
+kvmap_itlb_obp:
+	OBP_TRANS_LOOKUP(%g4, %g5, %g2, %g3, kvmap_itlb_longpath)
+
+	KTSB_LOCK_TAG(%g1, %g2, %g7)
+
+	KTSB_WRITE(%g1, %g5, %g6)
+
+	ba,pt		%xcc, kvmap_itlb_load
+	 nop
+
+kvmap_dtlb_obp:
+	OBP_TRANS_LOOKUP(%g4, %g5, %g2, %g3, kvmap_dtlb_longpath)
+
+	KTSB_LOCK_TAG(%g1, %g2, %g7)
+
+	KTSB_WRITE(%g1, %g5, %g6)
+
+	ba,pt		%xcc, kvmap_dtlb_load
+	 nop
+
+	.align		32
+kvmap_dtlb_tsb4m_load:
+	KTSB_LOCK_TAG(%g1, %g2, %g7)
+	KTSB_WRITE(%g1, %g5, %g6)
+	ba,pt		%xcc, kvmap_dtlb_load
+	 nop
+
+kvmap_dtlb:
+	/* %g6: TAG TARGET */
+	mov		TLB_TAG_ACCESS, %g4
+	ldxa		[%g4] ASI_DMMU, %g4
+
+	/* sun4v_dtlb_miss branches here with the missing virtual
+	 * address already loaded into %g4
+	 */
+kvmap_dtlb_4v:
+	brgez,pn	%g4, kvmap_dtlb_nonlinear
+	 nop
+
+#ifdef CONFIG_DEBUG_PAGEALLOC
+	/* Index through the base page size TSB even for linear
+	 * mappings when using page allocation debugging.
+	 */
+	KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
+#else
+	/* Correct TAG_TARGET is already in %g6, check 4mb TSB.  */
+	KERN_TSB4M_LOOKUP_TL1(%g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
+#endif
+	/* TSB entry address left in %g1, lookup linear PTE.
+	 * Must preserve %g1 and %g6 (TAG).
+	 */
+kvmap_dtlb_tsb4m_miss:
+	sethi		%hi(kpte_linear_bitmap), %g2
+	or		%g2, %lo(kpte_linear_bitmap), %g2
+
+	/* Clear the PAGE_OFFSET top virtual bits, then shift
+	 * down to get a 256MB physical address index.
+	 */
+	sllx		%g4, 21, %g5
+	mov		1, %g7
+	srlx		%g5, 21 + 28, %g5
+
+	/* Don't try this at home kids... this depends upon srlx
+	 * only taking the low 6 bits of the shift count in %g5.
+	 */
+	sllx		%g7, %g5, %g7
+
+	/* Divide by 64 to get the offset into the bitmask.  */
+	srlx		%g5, 6, %g5
+	sllx		%g5, 3, %g5
+
+	/* kern_linear_pte_xor[((mask & bit) ? 1 : 0)] */
+	ldx		[%g2 + %g5], %g2
+	andcc		%g2, %g7, %g0
+	sethi		%hi(kern_linear_pte_xor), %g5
+	or		%g5, %lo(kern_linear_pte_xor), %g5
+	bne,a,pt	%xcc, 1f
+	 add		%g5, 8, %g5
+
+1:	ldx		[%g5], %g2
+
+	.globl		kvmap_linear_patch
+kvmap_linear_patch:
+	ba,pt		%xcc, kvmap_dtlb_tsb4m_load
+	 xor		%g2, %g4, %g5
+
+kvmap_dtlb_vmalloc_addr:
+	KERN_PGTABLE_WALK(%g4, %g5, %g2, kvmap_dtlb_longpath)
+
+	KTSB_LOCK_TAG(%g1, %g2, %g7)
+
+	/* Load and check PTE.  */
+	ldxa		[%g5] ASI_PHYS_USE_EC, %g5
+	mov		1, %g7
+	sllx		%g7, TSB_TAG_INVALID_BIT, %g7
+	brgez,a,pn	%g5, kvmap_dtlb_longpath
+	 KTSB_STORE(%g1, %g7)
+
+	KTSB_WRITE(%g1, %g5, %g6)
+
+	/* fallthrough to TLB load */
+
+kvmap_dtlb_load:
+
+661:	stxa		%g5, [%g0] ASI_DTLB_DATA_IN	! Reload TLB
+	retry
+	.section	.sun4v_2insn_patch, "ax"
+	.word		661b
+	nop
+	nop
+	.previous
+
+	/* For sun4v the ASI_DTLB_DATA_IN store and the retry
+	 * instruction get nop'd out and we get here to branch
+	 * to the sun4v tlb load code.  The registers are setup
+	 * as follows:
+	 *
+	 * %g4: vaddr
+	 * %g5: PTE
+	 * %g6:	TAG
+	 *
+	 * The sun4v TLB load wants the PTE in %g3 so we fix that
+	 * up here.
+	 */
+	ba,pt		%xcc, sun4v_dtlb_load
+	 mov		%g5, %g3
+
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+kvmap_vmemmap:
+	sub		%g4, %g5, %g5
+	srlx		%g5, 22, %g5
+	sethi		%hi(vmemmap_table), %g1
+	sllx		%g5, 3, %g5
+	or		%g1, %lo(vmemmap_table), %g1
+	ba,pt		%xcc, kvmap_dtlb_load
+	 ldx		[%g1 + %g5], %g5
+#endif
+
+kvmap_dtlb_nonlinear:
+	/* Catch kernel NULL pointer derefs.  */
+	sethi		%hi(PAGE_SIZE), %g5
+	cmp		%g4, %g5
+	bleu,pn		%xcc, kvmap_dtlb_longpath
+	 nop
+
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+	/* Do not use the TSB for vmemmap.  */
+	mov		(VMEMMAP_BASE >> 24), %g5
+	sllx		%g5, 24, %g5
+	cmp		%g4,%g5
+	bgeu,pn		%xcc, kvmap_vmemmap
+	 nop
+#endif
+
+	KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
+
+kvmap_dtlb_tsbmiss:
+	sethi		%hi(MODULES_VADDR), %g5
+	cmp		%g4, %g5
+	blu,pn		%xcc, kvmap_dtlb_longpath
+	 mov		(VMALLOC_END >> 24), %g5
+	sllx		%g5, 24, %g5
+	cmp		%g4, %g5
+	bgeu,pn		%xcc, kvmap_dtlb_longpath
+	 nop
+
+kvmap_check_obp:
+	sethi		%hi(LOW_OBP_ADDRESS), %g5
+	cmp		%g4, %g5
+	blu,pn		%xcc, kvmap_dtlb_vmalloc_addr
+	 mov		0x1, %g5
+	sllx		%g5, 32, %g5
+	cmp		%g4, %g5
+	blu,pn		%xcc, kvmap_dtlb_obp
+	 nop
+	ba,pt		%xcc, kvmap_dtlb_vmalloc_addr
+	 nop
+
+kvmap_dtlb_longpath:
+
+661:	rdpr	%pstate, %g5
+	wrpr	%g5, PSTATE_AG | PSTATE_MG, %pstate
+	.section .sun4v_2insn_patch, "ax"
+	.word	661b
+	SET_GL(1)
+	ldxa		[%g0] ASI_SCRATCHPAD, %g5
+	.previous
+
+	rdpr	%tl, %g3
+	cmp	%g3, 1
+
+661:	mov	TLB_TAG_ACCESS, %g4
+	ldxa	[%g4] ASI_DMMU, %g5
+	.section .sun4v_2insn_patch, "ax"
+	.word	661b
+	ldx	[%g5 + HV_FAULT_D_ADDR_OFFSET], %g5
+	nop
+	.previous
+
+	be,pt	%xcc, sparc64_realfault_common
+	 mov	FAULT_CODE_DTLB, %g4
+	ba,pt	%xcc, winfix_trampoline
+	 nop
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
new file mode 100644
index 000000000000..d68982330f66
--- /dev/null
+++ b/arch/sparc/kernel/ldc.c
@@ -0,0 +1,2378 @@
+/* ldc.c: Logical Domain Channel link-layer protocol driver.
+ *
+ * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/scatterlist.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/init.h>
+
+#include <asm/hypervisor.h>
+#include <asm/iommu.h>
+#include <asm/page.h>
+#include <asm/ldc.h>
+#include <asm/mdesc.h>
+
+#define DRV_MODULE_NAME		"ldc"
+#define PFX DRV_MODULE_NAME	": "
+#define DRV_MODULE_VERSION	"1.1"
+#define DRV_MODULE_RELDATE	"July 22, 2008"
+
+static char version[] __devinitdata =
+	DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+#define LDC_PACKET_SIZE		64
+
+/* Packet header layout for unreliable and reliable mode frames.
+ * When in RAW mode, packets are simply straight 64-byte payloads
+ * with no headers.
+ */
+struct ldc_packet {
+	u8			type;
+#define LDC_CTRL		0x01
+#define LDC_DATA		0x02
+#define LDC_ERR			0x10
+
+	u8			stype;
+#define LDC_INFO		0x01
+#define LDC_ACK			0x02
+#define LDC_NACK		0x04
+
+	u8			ctrl;
+#define LDC_VERS		0x01 /* Link Version		*/
+#define LDC_RTS			0x02 /* Request To Send		*/
+#define LDC_RTR			0x03 /* Ready To Receive	*/
+#define LDC_RDX			0x04 /* Ready for Data eXchange	*/
+#define LDC_CTRL_MSK		0x0f
+
+	u8			env;
+#define LDC_LEN			0x3f
+#define LDC_FRAG_MASK		0xc0
+#define LDC_START		0x40
+#define LDC_STOP		0x80
+
+	u32			seqid;
+
+	union {
+		u8		u_data[LDC_PACKET_SIZE - 8];
+		struct {
+			u32	pad;
+			u32	ackid;
+			u8	r_data[LDC_PACKET_SIZE - 8 - 8];
+		} r;
+	} u;
+};
+
+struct ldc_version {
+	u16 major;
+	u16 minor;
+};
+
+/* Ordered from largest major to lowest.  */
+static struct ldc_version ver_arr[] = {
+	{ .major = 1, .minor = 0 },
+};
+
+#define LDC_DEFAULT_MTU			(4 * LDC_PACKET_SIZE)
+#define LDC_DEFAULT_NUM_ENTRIES		(PAGE_SIZE / LDC_PACKET_SIZE)
+
+struct ldc_channel;
+
+struct ldc_mode_ops {
+	int (*write)(struct ldc_channel *, const void *, unsigned int);
+	int (*read)(struct ldc_channel *, void *, unsigned int);
+};
+
+static const struct ldc_mode_ops raw_ops;
+static const struct ldc_mode_ops nonraw_ops;
+static const struct ldc_mode_ops stream_ops;
+
+int ldom_domaining_enabled;
+
+struct ldc_iommu {
+	/* Protects arena alloc/free.  */
+	spinlock_t			lock;
+	struct iommu_arena		arena;
+	struct ldc_mtable_entry		*page_table;
+};
+
+struct ldc_channel {
+	/* Protects all operations that depend upon channel state.  */
+	spinlock_t			lock;
+
+	unsigned long			id;
+
+	u8				*mssbuf;
+	u32				mssbuf_len;
+	u32				mssbuf_off;
+
+	struct ldc_packet		*tx_base;
+	unsigned long			tx_head;
+	unsigned long			tx_tail;
+	unsigned long			tx_num_entries;
+	unsigned long			tx_ra;
+
+	unsigned long			tx_acked;
+
+	struct ldc_packet		*rx_base;
+	unsigned long			rx_head;
+	unsigned long			rx_tail;
+	unsigned long			rx_num_entries;
+	unsigned long			rx_ra;
+
+	u32				rcv_nxt;
+	u32				snd_nxt;
+
+	unsigned long			chan_state;
+
+	struct ldc_channel_config	cfg;
+	void				*event_arg;
+
+	const struct ldc_mode_ops	*mops;
+
+	struct ldc_iommu		iommu;
+
+	struct ldc_version		ver;
+
+	u8				hs_state;
+#define LDC_HS_CLOSED			0x00
+#define LDC_HS_OPEN			0x01
+#define LDC_HS_GOTVERS			0x02
+#define LDC_HS_SENTRTR			0x03
+#define LDC_HS_GOTRTR			0x04
+#define LDC_HS_COMPLETE			0x10
+
+	u8				flags;
+#define LDC_FLAG_ALLOCED_QUEUES		0x01
+#define LDC_FLAG_REGISTERED_QUEUES	0x02
+#define LDC_FLAG_REGISTERED_IRQS	0x04
+#define LDC_FLAG_RESET			0x10
+
+	u8				mss;
+	u8				state;
+
+#define LDC_IRQ_NAME_MAX		32
+	char				rx_irq_name[LDC_IRQ_NAME_MAX];
+	char				tx_irq_name[LDC_IRQ_NAME_MAX];
+
+	struct hlist_head		mh_list;
+
+	struct hlist_node		list;
+};
+
+#define ldcdbg(TYPE, f, a...) \
+do {	if (lp->cfg.debug & LDC_DEBUG_##TYPE) \
+		printk(KERN_INFO PFX "ID[%lu] " f, lp->id, ## a); \
+} while (0)
+
+static const char *state_to_str(u8 state)
+{
+	switch (state) {
+	case LDC_STATE_INVALID:
+		return "INVALID";
+	case LDC_STATE_INIT:
+		return "INIT";
+	case LDC_STATE_BOUND:
+		return "BOUND";
+	case LDC_STATE_READY:
+		return "READY";
+	case LDC_STATE_CONNECTED:
+		return "CONNECTED";
+	default:
+		return "<UNKNOWN>";
+	}
+}
+
+static void ldc_set_state(struct ldc_channel *lp, u8 state)
+{
+	ldcdbg(STATE, "STATE (%s) --> (%s)\n",
+	       state_to_str(lp->state),
+	       state_to_str(state));
+
+	lp->state = state;
+}
+
+static unsigned long __advance(unsigned long off, unsigned long num_entries)
+{
+	off += LDC_PACKET_SIZE;
+	if (off == (num_entries * LDC_PACKET_SIZE))
+		off = 0;
+
+	return off;
+}
+
+static unsigned long rx_advance(struct ldc_channel *lp, unsigned long off)
+{
+	return __advance(off, lp->rx_num_entries);
+}
+
+static unsigned long tx_advance(struct ldc_channel *lp, unsigned long off)
+{
+	return __advance(off, lp->tx_num_entries);
+}
+
+static struct ldc_packet *handshake_get_tx_packet(struct ldc_channel *lp,
+						  unsigned long *new_tail)
+{
+	struct ldc_packet *p;
+	unsigned long t;
+
+	t = tx_advance(lp, lp->tx_tail);
+	if (t == lp->tx_head)
+		return NULL;
+
+	*new_tail = t;
+
+	p = lp->tx_base;
+	return p + (lp->tx_tail / LDC_PACKET_SIZE);
+}
+
+/* When we are in reliable or stream mode, have to track the next packet
+ * we haven't gotten an ACK for in the TX queue using tx_acked.  We have
+ * to be careful not to stomp over the queue past that point.  During
+ * the handshake, we don't have TX data packets pending in the queue
+ * and that's why handshake_get_tx_packet() need not be mindful of
+ * lp->tx_acked.
+ */
+static unsigned long head_for_data(struct ldc_channel *lp)
+{
+	if (lp->cfg.mode == LDC_MODE_STREAM)
+		return lp->tx_acked;
+	return lp->tx_head;
+}
+
+static int tx_has_space_for(struct ldc_channel *lp, unsigned int size)
+{
+	unsigned long limit, tail, new_tail, diff;
+	unsigned int mss;
+
+	limit = head_for_data(lp);
+	tail = lp->tx_tail;
+	new_tail = tx_advance(lp, tail);
+	if (new_tail == limit)
+		return 0;
+
+	if (limit > new_tail)
+		diff = limit - new_tail;
+	else
+		diff = (limit +
+			((lp->tx_num_entries * LDC_PACKET_SIZE) - new_tail));
+	diff /= LDC_PACKET_SIZE;
+	mss = lp->mss;
+
+	if (diff * mss < size)
+		return 0;
+
+	return 1;
+}
+
+static struct ldc_packet *data_get_tx_packet(struct ldc_channel *lp,
+					     unsigned long *new_tail)
+{
+	struct ldc_packet *p;
+	unsigned long h, t;
+
+	h = head_for_data(lp);
+	t = tx_advance(lp, lp->tx_tail);
+	if (t == h)
+		return NULL;
+
+	*new_tail = t;
+
+	p = lp->tx_base;
+	return p + (lp->tx_tail / LDC_PACKET_SIZE);
+}
+
+static int set_tx_tail(struct ldc_channel *lp, unsigned long tail)
+{
+	unsigned long orig_tail = lp->tx_tail;
+	int limit = 1000;
+
+	lp->tx_tail = tail;
+	while (limit-- > 0) {
+		unsigned long err;
+
+		err = sun4v_ldc_tx_set_qtail(lp->id, tail);
+		if (!err)
+			return 0;
+
+		if (err != HV_EWOULDBLOCK) {
+			lp->tx_tail = orig_tail;
+			return -EINVAL;
+		}
+		udelay(1);
+	}
+
+	lp->tx_tail = orig_tail;
+	return -EBUSY;
+}
+
+/* This just updates the head value in the hypervisor using
+ * a polling loop with a timeout.  The caller takes care of
+ * upating software state representing the head change, if any.
+ */
+static int __set_rx_head(struct ldc_channel *lp, unsigned long head)
+{
+	int limit = 1000;
+
+	while (limit-- > 0) {
+		unsigned long err;
+
+		err = sun4v_ldc_rx_set_qhead(lp->id, head);
+		if (!err)
+			return 0;
+
+		if (err != HV_EWOULDBLOCK)
+			return -EINVAL;
+
+		udelay(1);
+	}
+
+	return -EBUSY;
+}
+
+static int send_tx_packet(struct ldc_channel *lp,
+			  struct ldc_packet *p,
+			  unsigned long new_tail)
+{
+	BUG_ON(p != (lp->tx_base + (lp->tx_tail / LDC_PACKET_SIZE)));
+
+	return set_tx_tail(lp, new_tail);
+}
+
+static struct ldc_packet *handshake_compose_ctrl(struct ldc_channel *lp,
+						 u8 stype, u8 ctrl,
+						 void *data, int dlen,
+						 unsigned long *new_tail)
+{
+	struct ldc_packet *p = handshake_get_tx_packet(lp, new_tail);
+
+	if (p) {
+		memset(p, 0, sizeof(*p));
+		p->type = LDC_CTRL;
+		p->stype = stype;
+		p->ctrl = ctrl;
+		if (data)
+			memcpy(p->u.u_data, data, dlen);
+	}
+	return p;
+}
+
+static int start_handshake(struct ldc_channel *lp)
+{
+	struct ldc_packet *p;
+	struct ldc_version *ver;
+	unsigned long new_tail;
+
+	ver = &ver_arr[0];
+
+	ldcdbg(HS, "SEND VER INFO maj[%u] min[%u]\n",
+	       ver->major, ver->minor);
+
+	p = handshake_compose_ctrl(lp, LDC_INFO, LDC_VERS,
+				   ver, sizeof(*ver), &new_tail);
+	if (p) {
+		int err = send_tx_packet(lp, p, new_tail);
+		if (!err)
+			lp->flags &= ~LDC_FLAG_RESET;
+		return err;
+	}
+	return -EBUSY;
+}
+
+static int send_version_nack(struct ldc_channel *lp,
+			     u16 major, u16 minor)
+{
+	struct ldc_packet *p;
+	struct ldc_version ver;
+	unsigned long new_tail;
+
+	ver.major = major;
+	ver.minor = minor;
+
+	p = handshake_compose_ctrl(lp, LDC_NACK, LDC_VERS,
+				   &ver, sizeof(ver), &new_tail);
+	if (p) {
+		ldcdbg(HS, "SEND VER NACK maj[%u] min[%u]\n",
+		       ver.major, ver.minor);
+
+		return send_tx_packet(lp, p, new_tail);
+	}
+	return -EBUSY;
+}
+
+static int send_version_ack(struct ldc_channel *lp,
+			    struct ldc_version *vp)
+{
+	struct ldc_packet *p;
+	unsigned long new_tail;
+
+	p = handshake_compose_ctrl(lp, LDC_ACK, LDC_VERS,
+				   vp, sizeof(*vp), &new_tail);
+	if (p) {
+		ldcdbg(HS, "SEND VER ACK maj[%u] min[%u]\n",
+		       vp->major, vp->minor);
+
+		return send_tx_packet(lp, p, new_tail);
+	}
+	return -EBUSY;
+}
+
+static int send_rts(struct ldc_channel *lp)
+{
+	struct ldc_packet *p;
+	unsigned long new_tail;
+
+	p = handshake_compose_ctrl(lp, LDC_INFO, LDC_RTS, NULL, 0,
+				   &new_tail);
+	if (p) {
+		p->env = lp->cfg.mode;
+		p->seqid = 0;
+		lp->rcv_nxt = 0;
+
+		ldcdbg(HS, "SEND RTS env[0x%x] seqid[0x%x]\n",
+		       p->env, p->seqid);
+
+		return send_tx_packet(lp, p, new_tail);
+	}
+	return -EBUSY;
+}
+
+static int send_rtr(struct ldc_channel *lp)
+{
+	struct ldc_packet *p;
+	unsigned long new_tail;
+
+	p = handshake_compose_ctrl(lp, LDC_INFO, LDC_RTR, NULL, 0,
+				   &new_tail);
+	if (p) {
+		p->env = lp->cfg.mode;
+		p->seqid = 0;
+
+		ldcdbg(HS, "SEND RTR env[0x%x] seqid[0x%x]\n",
+		       p->env, p->seqid);
+
+		return send_tx_packet(lp, p, new_tail);
+	}
+	return -EBUSY;
+}
+
+static int send_rdx(struct ldc_channel *lp)
+{
+	struct ldc_packet *p;
+	unsigned long new_tail;
+
+	p = handshake_compose_ctrl(lp, LDC_INFO, LDC_RDX, NULL, 0,
+				   &new_tail);
+	if (p) {
+		p->env = 0;
+		p->seqid = ++lp->snd_nxt;
+		p->u.r.ackid = lp->rcv_nxt;
+
+		ldcdbg(HS, "SEND RDX env[0x%x] seqid[0x%x] ackid[0x%x]\n",
+		       p->env, p->seqid, p->u.r.ackid);
+
+		return send_tx_packet(lp, p, new_tail);
+	}
+	return -EBUSY;
+}
+
+static int send_data_nack(struct ldc_channel *lp, struct ldc_packet *data_pkt)
+{
+	struct ldc_packet *p;
+	unsigned long new_tail;
+	int err;
+
+	p = data_get_tx_packet(lp, &new_tail);
+	if (!p)
+		return -EBUSY;
+	memset(p, 0, sizeof(*p));
+	p->type = data_pkt->type;
+	p->stype = LDC_NACK;
+	p->ctrl = data_pkt->ctrl & LDC_CTRL_MSK;
+	p->seqid = lp->snd_nxt + 1;
+	p->u.r.ackid = lp->rcv_nxt;
+
+	ldcdbg(HS, "SEND DATA NACK type[0x%x] ctl[0x%x] seq[0x%x] ack[0x%x]\n",
+	       p->type, p->ctrl, p->seqid, p->u.r.ackid);
+
+	err = send_tx_packet(lp, p, new_tail);
+	if (!err)
+		lp->snd_nxt++;
+
+	return err;
+}
+
+static int ldc_abort(struct ldc_channel *lp)
+{
+	unsigned long hv_err;
+
+	ldcdbg(STATE, "ABORT\n");
+
+	/* We report but do not act upon the hypervisor errors because
+	 * there really isn't much we can do if they fail at this point.
+	 */
+	hv_err = sun4v_ldc_tx_qconf(lp->id, lp->tx_ra, lp->tx_num_entries);
+	if (hv_err)
+		printk(KERN_ERR PFX "ldc_abort: "
+		       "sun4v_ldc_tx_qconf(%lx,%lx,%lx) failed, err=%lu\n",
+		       lp->id, lp->tx_ra, lp->tx_num_entries, hv_err);
+
+	hv_err = sun4v_ldc_tx_get_state(lp->id,
+					&lp->tx_head,
+					&lp->tx_tail,
+					&lp->chan_state);
+	if (hv_err)
+		printk(KERN_ERR PFX "ldc_abort: "
+		       "sun4v_ldc_tx_get_state(%lx,...) failed, err=%lu\n",
+		       lp->id, hv_err);
+
+	hv_err = sun4v_ldc_rx_qconf(lp->id, lp->rx_ra, lp->rx_num_entries);
+	if (hv_err)
+		printk(KERN_ERR PFX "ldc_abort: "
+		       "sun4v_ldc_rx_qconf(%lx,%lx,%lx) failed, err=%lu\n",
+		       lp->id, lp->rx_ra, lp->rx_num_entries, hv_err);
+
+	/* Refetch the RX queue state as well, because we could be invoked
+	 * here in the queue processing context.
+	 */
+	hv_err = sun4v_ldc_rx_get_state(lp->id,
+					&lp->rx_head,
+					&lp->rx_tail,
+					&lp->chan_state);
+	if (hv_err)
+		printk(KERN_ERR PFX "ldc_abort: "
+		       "sun4v_ldc_rx_get_state(%lx,...) failed, err=%lu\n",
+		       lp->id, hv_err);
+
+	return -ECONNRESET;
+}
+
+static struct ldc_version *find_by_major(u16 major)
+{
+	struct ldc_version *ret = NULL;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ver_arr); i++) {
+		struct ldc_version *v = &ver_arr[i];
+		if (v->major <= major) {
+			ret = v;
+			break;
+		}
+	}
+	return ret;
+}
+
+static int process_ver_info(struct ldc_channel *lp, struct ldc_version *vp)
+{
+	struct ldc_version *vap;
+	int err;
+
+	ldcdbg(HS, "GOT VERSION INFO major[%x] minor[%x]\n",
+	       vp->major, vp->minor);
+
+	if (lp->hs_state == LDC_HS_GOTVERS) {
+		lp->hs_state = LDC_HS_OPEN;
+		memset(&lp->ver, 0, sizeof(lp->ver));
+	}
+
+	vap = find_by_major(vp->major);
+	if (!vap) {
+		err = send_version_nack(lp, 0, 0);
+	} else if (vap->major != vp->major) {
+		err = send_version_nack(lp, vap->major, vap->minor);
+	} else {
+		struct ldc_version ver = *vp;
+		if (ver.minor > vap->minor)
+			ver.minor = vap->minor;
+		err = send_version_ack(lp, &ver);
+		if (!err) {
+			lp->ver = ver;
+			lp->hs_state = LDC_HS_GOTVERS;
+		}
+	}
+	if (err)
+		return ldc_abort(lp);
+
+	return 0;
+}
+
+static int process_ver_ack(struct ldc_channel *lp, struct ldc_version *vp)
+{
+	ldcdbg(HS, "GOT VERSION ACK major[%x] minor[%x]\n",
+	       vp->major, vp->minor);
+
+	if (lp->hs_state == LDC_HS_GOTVERS) {
+		if (lp->ver.major != vp->major ||
+		    lp->ver.minor != vp->minor)
+			return ldc_abort(lp);
+	} else {
+		lp->ver = *vp;
+		lp->hs_state = LDC_HS_GOTVERS;
+	}
+	if (send_rts(lp))
+		return ldc_abort(lp);
+	return 0;
+}
+
+static int process_ver_nack(struct ldc_channel *lp, struct ldc_version *vp)
+{
+	struct ldc_version *vap;
+
+	if ((vp->major == 0 && vp->minor == 0) ||
+	    !(vap = find_by_major(vp->major))) {
+		return ldc_abort(lp);
+	} else {
+		struct ldc_packet *p;
+		unsigned long new_tail;
+
+		p = handshake_compose_ctrl(lp, LDC_INFO, LDC_VERS,
+					   vap, sizeof(*vap),
+					   &new_tail);
+		if (p)
+			return send_tx_packet(lp, p, new_tail);
+		else
+			return ldc_abort(lp);
+	}
+}
+
+static int process_version(struct ldc_channel *lp,
+			   struct ldc_packet *p)
+{
+	struct ldc_version *vp;
+
+	vp = (struct ldc_version *) p->u.u_data;
+
+	switch (p->stype) {
+	case LDC_INFO:
+		return process_ver_info(lp, vp);
+
+	case LDC_ACK:
+		return process_ver_ack(lp, vp);
+
+	case LDC_NACK:
+		return process_ver_nack(lp, vp);
+
+	default:
+		return ldc_abort(lp);
+	}
+}
+
+static int process_rts(struct ldc_channel *lp,
+		       struct ldc_packet *p)
+{
+	ldcdbg(HS, "GOT RTS stype[%x] seqid[%x] env[%x]\n",
+	       p->stype, p->seqid, p->env);
+
+	if (p->stype     != LDC_INFO	   ||
+	    lp->hs_state != LDC_HS_GOTVERS ||
+	    p->env       != lp->cfg.mode)
+		return ldc_abort(lp);
+
+	lp->snd_nxt = p->seqid;
+	lp->rcv_nxt = p->seqid;
+	lp->hs_state = LDC_HS_SENTRTR;
+	if (send_rtr(lp))
+		return ldc_abort(lp);
+
+	return 0;
+}
+
+static int process_rtr(struct ldc_channel *lp,
+		       struct ldc_packet *p)
+{
+	ldcdbg(HS, "GOT RTR stype[%x] seqid[%x] env[%x]\n",
+	       p->stype, p->seqid, p->env);
+
+	if (p->stype     != LDC_INFO ||
+	    p->env       != lp->cfg.mode)
+		return ldc_abort(lp);
+
+	lp->snd_nxt = p->seqid;
+	lp->hs_state = LDC_HS_COMPLETE;
+	ldc_set_state(lp, LDC_STATE_CONNECTED);
+	send_rdx(lp);
+
+	return LDC_EVENT_UP;
+}
+
+static int rx_seq_ok(struct ldc_channel *lp, u32 seqid)
+{
+	return lp->rcv_nxt + 1 == seqid;
+}
+
+static int process_rdx(struct ldc_channel *lp,
+		       struct ldc_packet *p)
+{
+	ldcdbg(HS, "GOT RDX stype[%x] seqid[%x] env[%x] ackid[%x]\n",
+	       p->stype, p->seqid, p->env, p->u.r.ackid);
+
+	if (p->stype != LDC_INFO ||
+	    !(rx_seq_ok(lp, p->seqid)))
+		return ldc_abort(lp);
+
+	lp->rcv_nxt = p->seqid;
+
+	lp->hs_state = LDC_HS_COMPLETE;
+	ldc_set_state(lp, LDC_STATE_CONNECTED);
+
+	return LDC_EVENT_UP;
+}
+
+static int process_control_frame(struct ldc_channel *lp,
+				 struct ldc_packet *p)
+{
+	switch (p->ctrl) {
+	case LDC_VERS:
+		return process_version(lp, p);
+
+	case LDC_RTS:
+		return process_rts(lp, p);
+
+	case LDC_RTR:
+		return process_rtr(lp, p);
+
+	case LDC_RDX:
+		return process_rdx(lp, p);
+
+	default:
+		return ldc_abort(lp);
+	}
+}
+
+static int process_error_frame(struct ldc_channel *lp,
+			       struct ldc_packet *p)
+{
+	return ldc_abort(lp);
+}
+
+static int process_data_ack(struct ldc_channel *lp,
+			    struct ldc_packet *ack)
+{
+	unsigned long head = lp->tx_acked;
+	u32 ackid = ack->u.r.ackid;
+
+	while (1) {
+		struct ldc_packet *p = lp->tx_base + (head / LDC_PACKET_SIZE);
+
+		head = tx_advance(lp, head);
+
+		if (p->seqid == ackid) {
+			lp->tx_acked = head;
+			return 0;
+		}
+		if (head == lp->tx_tail)
+			return ldc_abort(lp);
+	}
+
+	return 0;
+}
+
+static void send_events(struct ldc_channel *lp, unsigned int event_mask)
+{
+	if (event_mask & LDC_EVENT_RESET)
+		lp->cfg.event(lp->event_arg, LDC_EVENT_RESET);
+	if (event_mask & LDC_EVENT_UP)
+		lp->cfg.event(lp->event_arg, LDC_EVENT_UP);
+	if (event_mask & LDC_EVENT_DATA_READY)
+		lp->cfg.event(lp->event_arg, LDC_EVENT_DATA_READY);
+}
+
+static irqreturn_t ldc_rx(int irq, void *dev_id)
+{
+	struct ldc_channel *lp = dev_id;
+	unsigned long orig_state, hv_err, flags;
+	unsigned int event_mask;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	orig_state = lp->chan_state;
+	hv_err = sun4v_ldc_rx_get_state(lp->id,
+					&lp->rx_head,
+					&lp->rx_tail,
+					&lp->chan_state);
+
+	ldcdbg(RX, "RX state[0x%02lx:0x%02lx] head[0x%04lx] tail[0x%04lx]\n",
+	       orig_state, lp->chan_state, lp->rx_head, lp->rx_tail);
+
+	event_mask = 0;
+
+	if (lp->cfg.mode == LDC_MODE_RAW &&
+	    lp->chan_state == LDC_CHANNEL_UP) {
+		lp->hs_state = LDC_HS_COMPLETE;
+		ldc_set_state(lp, LDC_STATE_CONNECTED);
+
+		event_mask |= LDC_EVENT_UP;
+
+		orig_state = lp->chan_state;
+	}
+
+	/* If we are in reset state, flush the RX queue and ignore
+	 * everything.
+	 */
+	if (lp->flags & LDC_FLAG_RESET) {
+		(void) __set_rx_head(lp, lp->rx_tail);
+		goto out;
+	}
+
+	/* Once we finish the handshake, we let the ldc_read()
+	 * paths do all of the control frame and state management.
+	 * Just trigger the callback.
+	 */
+	if (lp->hs_state == LDC_HS_COMPLETE) {
+handshake_complete:
+		if (lp->chan_state != orig_state) {
+			unsigned int event = LDC_EVENT_RESET;
+
+			if (lp->chan_state == LDC_CHANNEL_UP)
+				event = LDC_EVENT_UP;
+
+			event_mask |= event;
+		}
+		if (lp->rx_head != lp->rx_tail)
+			event_mask |= LDC_EVENT_DATA_READY;
+
+		goto out;
+	}
+
+	if (lp->chan_state != orig_state)
+		goto out;
+
+	while (lp->rx_head != lp->rx_tail) {
+		struct ldc_packet *p;
+		unsigned long new;
+		int err;
+
+		p = lp->rx_base + (lp->rx_head / LDC_PACKET_SIZE);
+
+		switch (p->type) {
+		case LDC_CTRL:
+			err = process_control_frame(lp, p);
+			if (err > 0)
+				event_mask |= err;
+			break;
+
+		case LDC_DATA:
+			event_mask |= LDC_EVENT_DATA_READY;
+			err = 0;
+			break;
+
+		case LDC_ERR:
+			err = process_error_frame(lp, p);
+			break;
+
+		default:
+			err = ldc_abort(lp);
+			break;
+		}
+
+		if (err < 0)
+			break;
+
+		new = lp->rx_head;
+		new += LDC_PACKET_SIZE;
+		if (new == (lp->rx_num_entries * LDC_PACKET_SIZE))
+			new = 0;
+		lp->rx_head = new;
+
+		err = __set_rx_head(lp, new);
+		if (err < 0) {
+			(void) ldc_abort(lp);
+			break;
+		}
+		if (lp->hs_state == LDC_HS_COMPLETE)
+			goto handshake_complete;
+	}
+
+out:
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	send_events(lp, event_mask);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t ldc_tx(int irq, void *dev_id)
+{
+	struct ldc_channel *lp = dev_id;
+	unsigned long flags, hv_err, orig_state;
+	unsigned int event_mask = 0;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	orig_state = lp->chan_state;
+	hv_err = sun4v_ldc_tx_get_state(lp->id,
+					&lp->tx_head,
+					&lp->tx_tail,
+					&lp->chan_state);
+
+	ldcdbg(TX, " TX state[0x%02lx:0x%02lx] head[0x%04lx] tail[0x%04lx]\n",
+	       orig_state, lp->chan_state, lp->tx_head, lp->tx_tail);
+
+	if (lp->cfg.mode == LDC_MODE_RAW &&
+	    lp->chan_state == LDC_CHANNEL_UP) {
+		lp->hs_state = LDC_HS_COMPLETE;
+		ldc_set_state(lp, LDC_STATE_CONNECTED);
+
+		event_mask |= LDC_EVENT_UP;
+	}
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	send_events(lp, event_mask);
+
+	return IRQ_HANDLED;
+}
+
+/* XXX ldc_alloc() and ldc_free() needs to run under a mutex so
+ * XXX that addition and removal from the ldc_channel_list has
+ * XXX atomicity, otherwise the __ldc_channel_exists() check is
+ * XXX totally pointless as another thread can slip into ldc_alloc()
+ * XXX and add a channel with the same ID.  There also needs to be
+ * XXX a spinlock for ldc_channel_list.
+ */
+static HLIST_HEAD(ldc_channel_list);
+
+static int __ldc_channel_exists(unsigned long id)
+{
+	struct ldc_channel *lp;
+	struct hlist_node *n;
+
+	hlist_for_each_entry(lp, n, &ldc_channel_list, list) {
+		if (lp->id == id)
+			return 1;
+	}
+	return 0;
+}
+
+static int alloc_queue(const char *name, unsigned long num_entries,
+		       struct ldc_packet **base, unsigned long *ra)
+{
+	unsigned long size, order;
+	void *q;
+
+	size = num_entries * LDC_PACKET_SIZE;
+	order = get_order(size);
+
+	q = (void *) __get_free_pages(GFP_KERNEL, order);
+	if (!q) {
+		printk(KERN_ERR PFX "Alloc of %s queue failed with "
+		       "size=%lu order=%lu\n", name, size, order);
+		return -ENOMEM;
+	}
+
+	memset(q, 0, PAGE_SIZE << order);
+
+	*base = q;
+	*ra = __pa(q);
+
+	return 0;
+}
+
+static void free_queue(unsigned long num_entries, struct ldc_packet *q)
+{
+	unsigned long size, order;
+
+	if (!q)
+		return;
+
+	size = num_entries * LDC_PACKET_SIZE;
+	order = get_order(size);
+
+	free_pages((unsigned long)q, order);
+}
+
+/* XXX Make this configurable... XXX */
+#define LDC_IOTABLE_SIZE	(8 * 1024)
+
+static int ldc_iommu_init(struct ldc_channel *lp)
+{
+	unsigned long sz, num_tsb_entries, tsbsize, order;
+	struct ldc_iommu *iommu = &lp->iommu;
+	struct ldc_mtable_entry *table;
+	unsigned long hv_err;
+	int err;
+
+	num_tsb_entries = LDC_IOTABLE_SIZE;
+	tsbsize = num_tsb_entries * sizeof(struct ldc_mtable_entry);
+
+	spin_lock_init(&iommu->lock);
+
+	sz = num_tsb_entries / 8;
+	sz = (sz + 7UL) & ~7UL;
+	iommu->arena.map = kzalloc(sz, GFP_KERNEL);
+	if (!iommu->arena.map) {
+		printk(KERN_ERR PFX "Alloc of arena map failed, sz=%lu\n", sz);
+		return -ENOMEM;
+	}
+
+	iommu->arena.limit = num_tsb_entries;
+
+	order = get_order(tsbsize);
+
+	table = (struct ldc_mtable_entry *)
+		__get_free_pages(GFP_KERNEL, order);
+	err = -ENOMEM;
+	if (!table) {
+		printk(KERN_ERR PFX "Alloc of MTE table failed, "
+		       "size=%lu order=%lu\n", tsbsize, order);
+		goto out_free_map;
+	}
+
+	memset(table, 0, PAGE_SIZE << order);
+
+	iommu->page_table = table;
+
+	hv_err = sun4v_ldc_set_map_table(lp->id, __pa(table),
+					 num_tsb_entries);
+	err = -EINVAL;
+	if (hv_err)
+		goto out_free_table;
+
+	return 0;
+
+out_free_table:
+	free_pages((unsigned long) table, order);
+	iommu->page_table = NULL;
+
+out_free_map:
+	kfree(iommu->arena.map);
+	iommu->arena.map = NULL;
+
+	return err;
+}
+
+static void ldc_iommu_release(struct ldc_channel *lp)
+{
+	struct ldc_iommu *iommu = &lp->iommu;
+	unsigned long num_tsb_entries, tsbsize, order;
+
+	(void) sun4v_ldc_set_map_table(lp->id, 0, 0);
+
+	num_tsb_entries = iommu->arena.limit;
+	tsbsize = num_tsb_entries * sizeof(struct ldc_mtable_entry);
+	order = get_order(tsbsize);
+
+	free_pages((unsigned long) iommu->page_table, order);
+	iommu->page_table = NULL;
+
+	kfree(iommu->arena.map);
+	iommu->arena.map = NULL;
+}
+
+struct ldc_channel *ldc_alloc(unsigned long id,
+			      const struct ldc_channel_config *cfgp,
+			      void *event_arg)
+{
+	struct ldc_channel *lp;
+	const struct ldc_mode_ops *mops;
+	unsigned long dummy1, dummy2, hv_err;
+	u8 mss, *mssbuf;
+	int err;
+
+	err = -ENODEV;
+	if (!ldom_domaining_enabled)
+		goto out_err;
+
+	err = -EINVAL;
+	if (!cfgp)
+		goto out_err;
+
+	switch (cfgp->mode) {
+	case LDC_MODE_RAW:
+		mops = &raw_ops;
+		mss = LDC_PACKET_SIZE;
+		break;
+
+	case LDC_MODE_UNRELIABLE:
+		mops = &nonraw_ops;
+		mss = LDC_PACKET_SIZE - 8;
+		break;
+
+	case LDC_MODE_STREAM:
+		mops = &stream_ops;
+		mss = LDC_PACKET_SIZE - 8 - 8;
+		break;
+
+	default:
+		goto out_err;
+	}
+
+	if (!cfgp->event || !event_arg || !cfgp->rx_irq || !cfgp->tx_irq)
+		goto out_err;
+
+	hv_err = sun4v_ldc_tx_qinfo(id, &dummy1, &dummy2);
+	err = -ENODEV;
+	if (hv_err == HV_ECHANNEL)
+		goto out_err;
+
+	err = -EEXIST;
+	if (__ldc_channel_exists(id))
+		goto out_err;
+
+	mssbuf = NULL;
+
+	lp = kzalloc(sizeof(*lp), GFP_KERNEL);
+	err = -ENOMEM;
+	if (!lp)
+		goto out_err;
+
+	spin_lock_init(&lp->lock);
+
+	lp->id = id;
+
+	err = ldc_iommu_init(lp);
+	if (err)
+		goto out_free_ldc;
+
+	lp->mops = mops;
+	lp->mss = mss;
+
+	lp->cfg = *cfgp;
+	if (!lp->cfg.mtu)
+		lp->cfg.mtu = LDC_DEFAULT_MTU;
+
+	if (lp->cfg.mode == LDC_MODE_STREAM) {
+		mssbuf = kzalloc(lp->cfg.mtu, GFP_KERNEL);
+		if (!mssbuf) {
+			err = -ENOMEM;
+			goto out_free_iommu;
+		}
+		lp->mssbuf = mssbuf;
+	}
+
+	lp->event_arg = event_arg;
+
+	/* XXX allow setting via ldc_channel_config to override defaults
+	 * XXX or use some formula based upon mtu
+	 */
+	lp->tx_num_entries = LDC_DEFAULT_NUM_ENTRIES;
+	lp->rx_num_entries = LDC_DEFAULT_NUM_ENTRIES;
+
+	err = alloc_queue("TX", lp->tx_num_entries,
+			  &lp->tx_base, &lp->tx_ra);
+	if (err)
+		goto out_free_mssbuf;
+
+	err = alloc_queue("RX", lp->rx_num_entries,
+			  &lp->rx_base, &lp->rx_ra);
+	if (err)
+		goto out_free_txq;
+
+	lp->flags |= LDC_FLAG_ALLOCED_QUEUES;
+
+	lp->hs_state = LDC_HS_CLOSED;
+	ldc_set_state(lp, LDC_STATE_INIT);
+
+	INIT_HLIST_NODE(&lp->list);
+	hlist_add_head(&lp->list, &ldc_channel_list);
+
+	INIT_HLIST_HEAD(&lp->mh_list);
+
+	return lp;
+
+out_free_txq:
+	free_queue(lp->tx_num_entries, lp->tx_base);
+
+out_free_mssbuf:
+	if (mssbuf)
+		kfree(mssbuf);
+
+out_free_iommu:
+	ldc_iommu_release(lp);
+
+out_free_ldc:
+	kfree(lp);
+
+out_err:
+	return ERR_PTR(err);
+}
+EXPORT_SYMBOL(ldc_alloc);
+
+void ldc_free(struct ldc_channel *lp)
+{
+	if (lp->flags & LDC_FLAG_REGISTERED_IRQS) {
+		free_irq(lp->cfg.rx_irq, lp);
+		free_irq(lp->cfg.tx_irq, lp);
+	}
+
+	if (lp->flags & LDC_FLAG_REGISTERED_QUEUES) {
+		sun4v_ldc_tx_qconf(lp->id, 0, 0);
+		sun4v_ldc_rx_qconf(lp->id, 0, 0);
+		lp->flags &= ~LDC_FLAG_REGISTERED_QUEUES;
+	}
+	if (lp->flags & LDC_FLAG_ALLOCED_QUEUES) {
+		free_queue(lp->tx_num_entries, lp->tx_base);
+		free_queue(lp->rx_num_entries, lp->rx_base);
+		lp->flags &= ~LDC_FLAG_ALLOCED_QUEUES;
+	}
+
+	hlist_del(&lp->list);
+
+	if (lp->mssbuf)
+		kfree(lp->mssbuf);
+
+	ldc_iommu_release(lp);
+
+	kfree(lp);
+}
+EXPORT_SYMBOL(ldc_free);
+
+/* Bind the channel.  This registers the LDC queues with
+ * the hypervisor and puts the channel into a pseudo-listening
+ * state.  This does not initiate a handshake, ldc_connect() does
+ * that.
+ */
+int ldc_bind(struct ldc_channel *lp, const char *name)
+{
+	unsigned long hv_err, flags;
+	int err = -EINVAL;
+
+	if (!name ||
+	    (lp->state != LDC_STATE_INIT))
+		return -EINVAL;
+
+	snprintf(lp->rx_irq_name, LDC_IRQ_NAME_MAX, "%s RX", name);
+	snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name);
+
+	err = request_irq(lp->cfg.rx_irq, ldc_rx,
+			  IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+			  lp->rx_irq_name, lp);
+	if (err)
+		return err;
+
+	err = request_irq(lp->cfg.tx_irq, ldc_tx,
+			  IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+			  lp->tx_irq_name, lp);
+	if (err) {
+		free_irq(lp->cfg.rx_irq, lp);
+		return err;
+	}
+
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	enable_irq(lp->cfg.rx_irq);
+	enable_irq(lp->cfg.tx_irq);
+
+	lp->flags |= LDC_FLAG_REGISTERED_IRQS;
+
+	err = -ENODEV;
+	hv_err = sun4v_ldc_tx_qconf(lp->id, 0, 0);
+	if (hv_err)
+		goto out_free_irqs;
+
+	hv_err = sun4v_ldc_tx_qconf(lp->id, lp->tx_ra, lp->tx_num_entries);
+	if (hv_err)
+		goto out_free_irqs;
+
+	hv_err = sun4v_ldc_rx_qconf(lp->id, 0, 0);
+	if (hv_err)
+		goto out_unmap_tx;
+
+	hv_err = sun4v_ldc_rx_qconf(lp->id, lp->rx_ra, lp->rx_num_entries);
+	if (hv_err)
+		goto out_unmap_tx;
+
+	lp->flags |= LDC_FLAG_REGISTERED_QUEUES;
+
+	hv_err = sun4v_ldc_tx_get_state(lp->id,
+					&lp->tx_head,
+					&lp->tx_tail,
+					&lp->chan_state);
+	err = -EBUSY;
+	if (hv_err)
+		goto out_unmap_rx;
+
+	lp->tx_acked = lp->tx_head;
+
+	lp->hs_state = LDC_HS_OPEN;
+	ldc_set_state(lp, LDC_STATE_BOUND);
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return 0;
+
+out_unmap_rx:
+	lp->flags &= ~LDC_FLAG_REGISTERED_QUEUES;
+	sun4v_ldc_rx_qconf(lp->id, 0, 0);
+
+out_unmap_tx:
+	sun4v_ldc_tx_qconf(lp->id, 0, 0);
+
+out_free_irqs:
+	lp->flags &= ~LDC_FLAG_REGISTERED_IRQS;
+	free_irq(lp->cfg.tx_irq, lp);
+	free_irq(lp->cfg.rx_irq, lp);
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return err;
+}
+EXPORT_SYMBOL(ldc_bind);
+
+int ldc_connect(struct ldc_channel *lp)
+{
+	unsigned long flags;
+	int err;
+
+	if (lp->cfg.mode == LDC_MODE_RAW)
+		return -EINVAL;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	if (!(lp->flags & LDC_FLAG_ALLOCED_QUEUES) ||
+	    !(lp->flags & LDC_FLAG_REGISTERED_QUEUES) ||
+	    lp->hs_state != LDC_HS_OPEN)
+		err = -EINVAL;
+	else
+		err = start_handshake(lp);
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return err;
+}
+EXPORT_SYMBOL(ldc_connect);
+
+int ldc_disconnect(struct ldc_channel *lp)
+{
+	unsigned long hv_err, flags;
+	int err;
+
+	if (lp->cfg.mode == LDC_MODE_RAW)
+		return -EINVAL;
+
+	if (!(lp->flags & LDC_FLAG_ALLOCED_QUEUES) ||
+	    !(lp->flags & LDC_FLAG_REGISTERED_QUEUES))
+		return -EINVAL;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	err = -ENODEV;
+	hv_err = sun4v_ldc_tx_qconf(lp->id, 0, 0);
+	if (hv_err)
+		goto out_err;
+
+	hv_err = sun4v_ldc_tx_qconf(lp->id, lp->tx_ra, lp->tx_num_entries);
+	if (hv_err)
+		goto out_err;
+
+	hv_err = sun4v_ldc_rx_qconf(lp->id, 0, 0);
+	if (hv_err)
+		goto out_err;
+
+	hv_err = sun4v_ldc_rx_qconf(lp->id, lp->rx_ra, lp->rx_num_entries);
+	if (hv_err)
+		goto out_err;
+
+	ldc_set_state(lp, LDC_STATE_BOUND);
+	lp->hs_state = LDC_HS_OPEN;
+	lp->flags |= LDC_FLAG_RESET;
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return 0;
+
+out_err:
+	sun4v_ldc_tx_qconf(lp->id, 0, 0);
+	sun4v_ldc_rx_qconf(lp->id, 0, 0);
+	free_irq(lp->cfg.tx_irq, lp);
+	free_irq(lp->cfg.rx_irq, lp);
+	lp->flags &= ~(LDC_FLAG_REGISTERED_IRQS |
+		       LDC_FLAG_REGISTERED_QUEUES);
+	ldc_set_state(lp, LDC_STATE_INIT);
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return err;
+}
+EXPORT_SYMBOL(ldc_disconnect);
+
+int ldc_state(struct ldc_channel *lp)
+{
+	return lp->state;
+}
+EXPORT_SYMBOL(ldc_state);
+
+static int write_raw(struct ldc_channel *lp, const void *buf, unsigned int size)
+{
+	struct ldc_packet *p;
+	unsigned long new_tail;
+	int err;
+
+	if (size > LDC_PACKET_SIZE)
+		return -EMSGSIZE;
+
+	p = data_get_tx_packet(lp, &new_tail);
+	if (!p)
+		return -EAGAIN;
+
+	memcpy(p, buf, size);
+
+	err = send_tx_packet(lp, p, new_tail);
+	if (!err)
+		err = size;
+
+	return err;
+}
+
+static int read_raw(struct ldc_channel *lp, void *buf, unsigned int size)
+{
+	struct ldc_packet *p;
+	unsigned long hv_err, new;
+	int err;
+
+	if (size < LDC_PACKET_SIZE)
+		return -EINVAL;
+
+	hv_err = sun4v_ldc_rx_get_state(lp->id,
+					&lp->rx_head,
+					&lp->rx_tail,
+					&lp->chan_state);
+	if (hv_err)
+		return ldc_abort(lp);
+
+	if (lp->chan_state == LDC_CHANNEL_DOWN ||
+	    lp->chan_state == LDC_CHANNEL_RESETTING)
+		return -ECONNRESET;
+
+	if (lp->rx_head == lp->rx_tail)
+		return 0;
+
+	p = lp->rx_base + (lp->rx_head / LDC_PACKET_SIZE);
+	memcpy(buf, p, LDC_PACKET_SIZE);
+
+	new = rx_advance(lp, lp->rx_head);
+	lp->rx_head = new;
+
+	err = __set_rx_head(lp, new);
+	if (err < 0)
+		err = -ECONNRESET;
+	else
+		err = LDC_PACKET_SIZE;
+
+	return err;
+}
+
+static const struct ldc_mode_ops raw_ops = {
+	.write		=	write_raw,
+	.read		=	read_raw,
+};
+
+static int write_nonraw(struct ldc_channel *lp, const void *buf,
+			unsigned int size)
+{
+	unsigned long hv_err, tail;
+	unsigned int copied;
+	u32 seq;
+	int err;
+
+	hv_err = sun4v_ldc_tx_get_state(lp->id, &lp->tx_head, &lp->tx_tail,
+					&lp->chan_state);
+	if (unlikely(hv_err))
+		return -EBUSY;
+
+	if (unlikely(lp->chan_state != LDC_CHANNEL_UP))
+		return ldc_abort(lp);
+
+	if (!tx_has_space_for(lp, size))
+		return -EAGAIN;
+
+	seq = lp->snd_nxt;
+	copied = 0;
+	tail = lp->tx_tail;
+	while (copied < size) {
+		struct ldc_packet *p = lp->tx_base + (tail / LDC_PACKET_SIZE);
+		u8 *data = ((lp->cfg.mode == LDC_MODE_UNRELIABLE) ?
+			    p->u.u_data :
+			    p->u.r.r_data);
+		int data_len;
+
+		p->type = LDC_DATA;
+		p->stype = LDC_INFO;
+		p->ctrl = 0;
+
+		data_len = size - copied;
+		if (data_len > lp->mss)
+			data_len = lp->mss;
+
+		BUG_ON(data_len > LDC_LEN);
+
+		p->env = (data_len |
+			  (copied == 0 ? LDC_START : 0) |
+			  (data_len == size - copied ? LDC_STOP : 0));
+
+		p->seqid = ++seq;
+
+		ldcdbg(DATA, "SENT DATA [%02x:%02x:%02x:%02x:%08x]\n",
+		       p->type,
+		       p->stype,
+		       p->ctrl,
+		       p->env,
+		       p->seqid);
+
+		memcpy(data, buf, data_len);
+		buf += data_len;
+		copied += data_len;
+
+		tail = tx_advance(lp, tail);
+	}
+
+	err = set_tx_tail(lp, tail);
+	if (!err) {
+		lp->snd_nxt = seq;
+		err = size;
+	}
+
+	return err;
+}
+
+static int rx_bad_seq(struct ldc_channel *lp, struct ldc_packet *p,
+		      struct ldc_packet *first_frag)
+{
+	int err;
+
+	if (first_frag)
+		lp->rcv_nxt = first_frag->seqid - 1;
+
+	err = send_data_nack(lp, p);
+	if (err)
+		return err;
+
+	err = __set_rx_head(lp, lp->rx_tail);
+	if (err < 0)
+		return ldc_abort(lp);
+
+	return 0;
+}
+
+static int data_ack_nack(struct ldc_channel *lp, struct ldc_packet *p)
+{
+	if (p->stype & LDC_ACK) {
+		int err = process_data_ack(lp, p);
+		if (err)
+			return err;
+	}
+	if (p->stype & LDC_NACK)
+		return ldc_abort(lp);
+
+	return 0;
+}
+
+static int rx_data_wait(struct ldc_channel *lp, unsigned long cur_head)
+{
+	unsigned long dummy;
+	int limit = 1000;
+
+	ldcdbg(DATA, "DATA WAIT cur_head[%lx] rx_head[%lx] rx_tail[%lx]\n",
+	       cur_head, lp->rx_head, lp->rx_tail);
+	while (limit-- > 0) {
+		unsigned long hv_err;
+
+		hv_err = sun4v_ldc_rx_get_state(lp->id,
+						&dummy,
+						&lp->rx_tail,
+						&lp->chan_state);
+		if (hv_err)
+			return ldc_abort(lp);
+
+		if (lp->chan_state == LDC_CHANNEL_DOWN ||
+		    lp->chan_state == LDC_CHANNEL_RESETTING)
+			return -ECONNRESET;
+
+		if (cur_head != lp->rx_tail) {
+			ldcdbg(DATA, "DATA WAIT DONE "
+			       "head[%lx] tail[%lx] chan_state[%lx]\n",
+			       dummy, lp->rx_tail, lp->chan_state);
+			return 0;
+		}
+
+		udelay(1);
+	}
+	return -EAGAIN;
+}
+
+static int rx_set_head(struct ldc_channel *lp, unsigned long head)
+{
+	int err = __set_rx_head(lp, head);
+
+	if (err < 0)
+		return ldc_abort(lp);
+
+	lp->rx_head = head;
+	return 0;
+}
+
+static void send_data_ack(struct ldc_channel *lp)
+{
+	unsigned long new_tail;
+	struct ldc_packet *p;
+
+	p = data_get_tx_packet(lp, &new_tail);
+	if (likely(p)) {
+		int err;
+
+		memset(p, 0, sizeof(*p));
+		p->type = LDC_DATA;
+		p->stype = LDC_ACK;
+		p->ctrl = 0;
+		p->seqid = lp->snd_nxt + 1;
+		p->u.r.ackid = lp->rcv_nxt;
+
+		err = send_tx_packet(lp, p, new_tail);
+		if (!err)
+			lp->snd_nxt++;
+	}
+}
+
+static int read_nonraw(struct ldc_channel *lp, void *buf, unsigned int size)
+{
+	struct ldc_packet *first_frag;
+	unsigned long hv_err, new;
+	int err, copied;
+
+	hv_err = sun4v_ldc_rx_get_state(lp->id,
+					&lp->rx_head,
+					&lp->rx_tail,
+					&lp->chan_state);
+	if (hv_err)
+		return ldc_abort(lp);
+
+	if (lp->chan_state == LDC_CHANNEL_DOWN ||
+	    lp->chan_state == LDC_CHANNEL_RESETTING)
+		return -ECONNRESET;
+
+	if (lp->rx_head == lp->rx_tail)
+		return 0;
+
+	first_frag = NULL;
+	copied = err = 0;
+	new = lp->rx_head;
+	while (1) {
+		struct ldc_packet *p;
+		int pkt_len;
+
+		BUG_ON(new == lp->rx_tail);
+		p = lp->rx_base + (new / LDC_PACKET_SIZE);
+
+		ldcdbg(RX, "RX read pkt[%02x:%02x:%02x:%02x:%08x:%08x] "
+		       "rcv_nxt[%08x]\n",
+		       p->type,
+		       p->stype,
+		       p->ctrl,
+		       p->env,
+		       p->seqid,
+		       p->u.r.ackid,
+		       lp->rcv_nxt);
+
+		if (unlikely(!rx_seq_ok(lp, p->seqid))) {
+			err = rx_bad_seq(lp, p, first_frag);
+			copied = 0;
+			break;
+		}
+
+		if (p->type & LDC_CTRL) {
+			err = process_control_frame(lp, p);
+			if (err < 0)
+				break;
+			err = 0;
+		}
+
+		lp->rcv_nxt = p->seqid;
+
+		if (!(p->type & LDC_DATA)) {
+			new = rx_advance(lp, new);
+			goto no_data;
+		}
+		if (p->stype & (LDC_ACK | LDC_NACK)) {
+			err = data_ack_nack(lp, p);
+			if (err)
+				break;
+		}
+		if (!(p->stype & LDC_INFO)) {
+			new = rx_advance(lp, new);
+			err = rx_set_head(lp, new);
+			if (err)
+				break;
+			goto no_data;
+		}
+
+		pkt_len = p->env & LDC_LEN;
+
+		/* Every initial packet starts with the START bit set.
+		 *
+		 * Singleton packets will have both START+STOP set.
+		 *
+		 * Fragments will have START set in the first frame, STOP
+		 * set in the last frame, and neither bit set in middle
+		 * frames of the packet.
+		 *
+		 * Therefore if we are at the beginning of a packet and
+		 * we don't see START, or we are in the middle of a fragmented
+		 * packet and do see START, we are unsynchronized and should
+		 * flush the RX queue.
+		 */
+		if ((first_frag == NULL && !(p->env & LDC_START)) ||
+		    (first_frag != NULL &&  (p->env & LDC_START))) {
+			if (!first_frag)
+				new = rx_advance(lp, new);
+
+			err = rx_set_head(lp, new);
+			if (err)
+				break;
+
+			if (!first_frag)
+				goto no_data;
+		}
+		if (!first_frag)
+			first_frag = p;
+
+		if (pkt_len > size - copied) {
+			/* User didn't give us a big enough buffer,
+			 * what to do?  This is a pretty serious error.
+			 *
+			 * Since we haven't updated the RX ring head to
+			 * consume any of the packets, signal the error
+			 * to the user and just leave the RX ring alone.
+			 *
+			 * This seems the best behavior because this allows
+			 * a user of the LDC layer to start with a small
+			 * RX buffer for ldc_read() calls and use -EMSGSIZE
+			 * as a cue to enlarge it's read buffer.
+			 */
+			err = -EMSGSIZE;
+			break;
+		}
+
+		/* Ok, we are gonna eat this one.  */
+		new = rx_advance(lp, new);
+
+		memcpy(buf,
+		       (lp->cfg.mode == LDC_MODE_UNRELIABLE ?
+			p->u.u_data : p->u.r.r_data), pkt_len);
+		buf += pkt_len;
+		copied += pkt_len;
+
+		if (p->env & LDC_STOP)
+			break;
+
+no_data:
+		if (new == lp->rx_tail) {
+			err = rx_data_wait(lp, new);
+			if (err)
+				break;
+		}
+	}
+
+	if (!err)
+		err = rx_set_head(lp, new);
+
+	if (err && first_frag)
+		lp->rcv_nxt = first_frag->seqid - 1;
+
+	if (!err) {
+		err = copied;
+		if (err > 0 && lp->cfg.mode != LDC_MODE_UNRELIABLE)
+			send_data_ack(lp);
+	}
+
+	return err;
+}
+
+static const struct ldc_mode_ops nonraw_ops = {
+	.write		=	write_nonraw,
+	.read		=	read_nonraw,
+};
+
+static int write_stream(struct ldc_channel *lp, const void *buf,
+			unsigned int size)
+{
+	if (size > lp->cfg.mtu)
+		size = lp->cfg.mtu;
+	return write_nonraw(lp, buf, size);
+}
+
+static int read_stream(struct ldc_channel *lp, void *buf, unsigned int size)
+{
+	if (!lp->mssbuf_len) {
+		int err = read_nonraw(lp, lp->mssbuf, lp->cfg.mtu);
+		if (err < 0)
+			return err;
+
+		lp->mssbuf_len = err;
+		lp->mssbuf_off = 0;
+	}
+
+	if (size > lp->mssbuf_len)
+		size = lp->mssbuf_len;
+	memcpy(buf, lp->mssbuf + lp->mssbuf_off, size);
+
+	lp->mssbuf_off += size;
+	lp->mssbuf_len -= size;
+
+	return size;
+}
+
+static const struct ldc_mode_ops stream_ops = {
+	.write		=	write_stream,
+	.read		=	read_stream,
+};
+
+int ldc_write(struct ldc_channel *lp, const void *buf, unsigned int size)
+{
+	unsigned long flags;
+	int err;
+
+	if (!buf)
+		return -EINVAL;
+
+	if (!size)
+		return 0;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	if (lp->hs_state != LDC_HS_COMPLETE)
+		err = -ENOTCONN;
+	else
+		err = lp->mops->write(lp, buf, size);
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return err;
+}
+EXPORT_SYMBOL(ldc_write);
+
+int ldc_read(struct ldc_channel *lp, void *buf, unsigned int size)
+{
+	unsigned long flags;
+	int err;
+
+	if (!buf)
+		return -EINVAL;
+
+	if (!size)
+		return 0;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	if (lp->hs_state != LDC_HS_COMPLETE)
+		err = -ENOTCONN;
+	else
+		err = lp->mops->read(lp, buf, size);
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return err;
+}
+EXPORT_SYMBOL(ldc_read);
+
+static long arena_alloc(struct ldc_iommu *iommu, unsigned long npages)
+{
+	struct iommu_arena *arena = &iommu->arena;
+	unsigned long n, i, start, end, limit;
+	int pass;
+
+	limit = arena->limit;
+	start = arena->hint;
+	pass = 0;
+
+again:
+	n = find_next_zero_bit(arena->map, limit, start);
+	end = n + npages;
+	if (unlikely(end >= limit)) {
+		if (likely(pass < 1)) {
+			limit = start;
+			start = 0;
+			pass++;
+			goto again;
+		} else {
+			/* Scanned the whole thing, give up. */
+			return -1;
+		}
+	}
+
+	for (i = n; i < end; i++) {
+		if (test_bit(i, arena->map)) {
+			start = i + 1;
+			goto again;
+		}
+	}
+
+	for (i = n; i < end; i++)
+		__set_bit(i, arena->map);
+
+	arena->hint = end;
+
+	return n;
+}
+
+#define COOKIE_PGSZ_CODE	0xf000000000000000ULL
+#define COOKIE_PGSZ_CODE_SHIFT	60ULL
+
+static u64 pagesize_code(void)
+{
+	switch (PAGE_SIZE) {
+	default:
+	case (8ULL * 1024ULL):
+		return 0;
+	case (64ULL * 1024ULL):
+		return 1;
+	case (512ULL * 1024ULL):
+		return 2;
+	case (4ULL * 1024ULL * 1024ULL):
+		return 3;
+	case (32ULL * 1024ULL * 1024ULL):
+		return 4;
+	case (256ULL * 1024ULL * 1024ULL):
+		return 5;
+	}
+}
+
+static u64 make_cookie(u64 index, u64 pgsz_code, u64 page_offset)
+{
+	return ((pgsz_code << COOKIE_PGSZ_CODE_SHIFT) |
+		(index << PAGE_SHIFT) |
+		page_offset);
+}
+
+static u64 cookie_to_index(u64 cookie, unsigned long *shift)
+{
+	u64 szcode = cookie >> COOKIE_PGSZ_CODE_SHIFT;
+
+	cookie &= ~COOKIE_PGSZ_CODE;
+
+	*shift = szcode * 3;
+
+	return (cookie >> (13ULL + (szcode * 3ULL)));
+}
+
+static struct ldc_mtable_entry *alloc_npages(struct ldc_iommu *iommu,
+					     unsigned long npages)
+{
+	long entry;
+
+	entry = arena_alloc(iommu, npages);
+	if (unlikely(entry < 0))
+		return NULL;
+
+	return iommu->page_table + entry;
+}
+
+static u64 perm_to_mte(unsigned int map_perm)
+{
+	u64 mte_base;
+
+	mte_base = pagesize_code();
+
+	if (map_perm & LDC_MAP_SHADOW) {
+		if (map_perm & LDC_MAP_R)
+			mte_base |= LDC_MTE_COPY_R;
+		if (map_perm & LDC_MAP_W)
+			mte_base |= LDC_MTE_COPY_W;
+	}
+	if (map_perm & LDC_MAP_DIRECT) {
+		if (map_perm & LDC_MAP_R)
+			mte_base |= LDC_MTE_READ;
+		if (map_perm & LDC_MAP_W)
+			mte_base |= LDC_MTE_WRITE;
+		if (map_perm & LDC_MAP_X)
+			mte_base |= LDC_MTE_EXEC;
+	}
+	if (map_perm & LDC_MAP_IO) {
+		if (map_perm & LDC_MAP_R)
+			mte_base |= LDC_MTE_IOMMU_R;
+		if (map_perm & LDC_MAP_W)
+			mte_base |= LDC_MTE_IOMMU_W;
+	}
+
+	return mte_base;
+}
+
+static int pages_in_region(unsigned long base, long len)
+{
+	int count = 0;
+
+	do {
+		unsigned long new = (base + PAGE_SIZE) & PAGE_MASK;
+
+		len -= (new - base);
+		base = new;
+		count++;
+	} while (len > 0);
+
+	return count;
+}
+
+struct cookie_state {
+	struct ldc_mtable_entry		*page_table;
+	struct ldc_trans_cookie		*cookies;
+	u64				mte_base;
+	u64				prev_cookie;
+	u32				pte_idx;
+	u32				nc;
+};
+
+static void fill_cookies(struct cookie_state *sp, unsigned long pa,
+			 unsigned long off, unsigned long len)
+{
+	do {
+		unsigned long tlen, new = pa + PAGE_SIZE;
+		u64 this_cookie;
+
+		sp->page_table[sp->pte_idx].mte = sp->mte_base | pa;
+
+		tlen = PAGE_SIZE;
+		if (off)
+			tlen = PAGE_SIZE - off;
+		if (tlen > len)
+			tlen = len;
+
+		this_cookie = make_cookie(sp->pte_idx,
+					  pagesize_code(), off);
+
+		off = 0;
+
+		if (this_cookie == sp->prev_cookie) {
+			sp->cookies[sp->nc - 1].cookie_size += tlen;
+		} else {
+			sp->cookies[sp->nc].cookie_addr = this_cookie;
+			sp->cookies[sp->nc].cookie_size = tlen;
+			sp->nc++;
+		}
+		sp->prev_cookie = this_cookie + tlen;
+
+		sp->pte_idx++;
+
+		len -= tlen;
+		pa = new;
+	} while (len > 0);
+}
+
+static int sg_count_one(struct scatterlist *sg)
+{
+	unsigned long base = page_to_pfn(sg_page(sg)) << PAGE_SHIFT;
+	long len = sg->length;
+
+	if ((sg->offset | len) & (8UL - 1))
+		return -EFAULT;
+
+	return pages_in_region(base + sg->offset, len);
+}
+
+static int sg_count_pages(struct scatterlist *sg, int num_sg)
+{
+	int count;
+	int i;
+
+	count = 0;
+	for (i = 0; i < num_sg; i++) {
+		int err = sg_count_one(sg + i);
+		if (err < 0)
+			return err;
+		count += err;
+	}
+
+	return count;
+}
+
+int ldc_map_sg(struct ldc_channel *lp,
+	       struct scatterlist *sg, int num_sg,
+	       struct ldc_trans_cookie *cookies, int ncookies,
+	       unsigned int map_perm)
+{
+	unsigned long i, npages, flags;
+	struct ldc_mtable_entry *base;
+	struct cookie_state state;
+	struct ldc_iommu *iommu;
+	int err;
+
+	if (map_perm & ~LDC_MAP_ALL)
+		return -EINVAL;
+
+	err = sg_count_pages(sg, num_sg);
+	if (err < 0)
+		return err;
+
+	npages = err;
+	if (err > ncookies)
+		return -EMSGSIZE;
+
+	iommu = &lp->iommu;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	base = alloc_npages(iommu, npages);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	if (!base)
+		return -ENOMEM;
+
+	state.page_table = iommu->page_table;
+	state.cookies = cookies;
+	state.mte_base = perm_to_mte(map_perm);
+	state.prev_cookie = ~(u64)0;
+	state.pte_idx = (base - iommu->page_table);
+	state.nc = 0;
+
+	for (i = 0; i < num_sg; i++)
+		fill_cookies(&state, page_to_pfn(sg_page(&sg[i])) << PAGE_SHIFT,
+			     sg[i].offset, sg[i].length);
+
+	return state.nc;
+}
+EXPORT_SYMBOL(ldc_map_sg);
+
+int ldc_map_single(struct ldc_channel *lp,
+		   void *buf, unsigned int len,
+		   struct ldc_trans_cookie *cookies, int ncookies,
+		   unsigned int map_perm)
+{
+	unsigned long npages, pa, flags;
+	struct ldc_mtable_entry *base;
+	struct cookie_state state;
+	struct ldc_iommu *iommu;
+
+	if ((map_perm & ~LDC_MAP_ALL) || (ncookies < 1))
+		return -EINVAL;
+
+	pa = __pa(buf);
+	if ((pa | len) & (8UL - 1))
+		return -EFAULT;
+
+	npages = pages_in_region(pa, len);
+
+	iommu = &lp->iommu;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	base = alloc_npages(iommu, npages);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	if (!base)
+		return -ENOMEM;
+
+	state.page_table = iommu->page_table;
+	state.cookies = cookies;
+	state.mte_base = perm_to_mte(map_perm);
+	state.prev_cookie = ~(u64)0;
+	state.pte_idx = (base - iommu->page_table);
+	state.nc = 0;
+	fill_cookies(&state, (pa & PAGE_MASK), (pa & ~PAGE_MASK), len);
+	BUG_ON(state.nc != 1);
+
+	return state.nc;
+}
+EXPORT_SYMBOL(ldc_map_single);
+
+static void free_npages(unsigned long id, struct ldc_iommu *iommu,
+			u64 cookie, u64 size)
+{
+	struct iommu_arena *arena = &iommu->arena;
+	unsigned long i, shift, index, npages;
+	struct ldc_mtable_entry *base;
+
+	npages = PAGE_ALIGN(((cookie & ~PAGE_MASK) + size)) >> PAGE_SHIFT;
+	index = cookie_to_index(cookie, &shift);
+	base = iommu->page_table + index;
+
+	BUG_ON(index > arena->limit ||
+	       (index + npages) > arena->limit);
+
+	for (i = 0; i < npages; i++) {
+		if (base->cookie)
+			sun4v_ldc_revoke(id, cookie + (i << shift),
+					 base->cookie);
+		base->mte = 0;
+		__clear_bit(index + i, arena->map);
+	}
+}
+
+void ldc_unmap(struct ldc_channel *lp, struct ldc_trans_cookie *cookies,
+	       int ncookies)
+{
+	struct ldc_iommu *iommu = &lp->iommu;
+	unsigned long flags;
+	int i;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	for (i = 0; i < ncookies; i++) {
+		u64 addr = cookies[i].cookie_addr;
+		u64 size = cookies[i].cookie_size;
+
+		free_npages(lp->id, iommu, addr, size);
+	}
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+EXPORT_SYMBOL(ldc_unmap);
+
+int ldc_copy(struct ldc_channel *lp, int copy_dir,
+	     void *buf, unsigned int len, unsigned long offset,
+	     struct ldc_trans_cookie *cookies, int ncookies)
+{
+	unsigned int orig_len;
+	unsigned long ra;
+	int i;
+
+	if (copy_dir != LDC_COPY_IN && copy_dir != LDC_COPY_OUT) {
+		printk(KERN_ERR PFX "ldc_copy: ID[%lu] Bad copy_dir[%d]\n",
+		       lp->id, copy_dir);
+		return -EINVAL;
+	}
+
+	ra = __pa(buf);
+	if ((ra | len | offset) & (8UL - 1)) {
+		printk(KERN_ERR PFX "ldc_copy: ID[%lu] Unaligned buffer "
+		       "ra[%lx] len[%x] offset[%lx]\n",
+		       lp->id, ra, len, offset);
+		return -EFAULT;
+	}
+
+	if (lp->hs_state != LDC_HS_COMPLETE ||
+	    (lp->flags & LDC_FLAG_RESET)) {
+		printk(KERN_ERR PFX "ldc_copy: ID[%lu] Link down hs_state[%x] "
+		       "flags[%x]\n", lp->id, lp->hs_state, lp->flags);
+		return -ECONNRESET;
+	}
+
+	orig_len = len;
+	for (i = 0; i < ncookies; i++) {
+		unsigned long cookie_raddr = cookies[i].cookie_addr;
+		unsigned long this_len = cookies[i].cookie_size;
+		unsigned long actual_len;
+
+		if (unlikely(offset)) {
+			unsigned long this_off = offset;
+
+			if (this_off > this_len)
+				this_off = this_len;
+
+			offset -= this_off;
+			this_len -= this_off;
+			if (!this_len)
+				continue;
+			cookie_raddr += this_off;
+		}
+
+		if (this_len > len)
+			this_len = len;
+
+		while (1) {
+			unsigned long hv_err;
+
+			hv_err = sun4v_ldc_copy(lp->id, copy_dir,
+						cookie_raddr, ra,
+						this_len, &actual_len);
+			if (unlikely(hv_err)) {
+				printk(KERN_ERR PFX "ldc_copy: ID[%lu] "
+				       "HV error %lu\n",
+				       lp->id, hv_err);
+				if (lp->hs_state != LDC_HS_COMPLETE ||
+				    (lp->flags & LDC_FLAG_RESET))
+					return -ECONNRESET;
+				else
+					return -EFAULT;
+			}
+
+			cookie_raddr += actual_len;
+			ra += actual_len;
+			len -= actual_len;
+			if (actual_len == this_len)
+				break;
+
+			this_len -= actual_len;
+		}
+
+		if (!len)
+			break;
+	}
+
+	/* It is caller policy what to do about short copies.
+	 * For example, a networking driver can declare the
+	 * packet a runt and drop it.
+	 */
+
+	return orig_len - len;
+}
+EXPORT_SYMBOL(ldc_copy);
+
+void *ldc_alloc_exp_dring(struct ldc_channel *lp, unsigned int len,
+			  struct ldc_trans_cookie *cookies, int *ncookies,
+			  unsigned int map_perm)
+{
+	void *buf;
+	int err;
+
+	if (len & (8UL - 1))
+		return ERR_PTR(-EINVAL);
+
+	buf = kzalloc(len, GFP_KERNEL);
+	if (!buf)
+		return ERR_PTR(-ENOMEM);
+
+	err = ldc_map_single(lp, buf, len, cookies, *ncookies, map_perm);
+	if (err < 0) {
+		kfree(buf);
+		return ERR_PTR(err);
+	}
+	*ncookies = err;
+
+	return buf;
+}
+EXPORT_SYMBOL(ldc_alloc_exp_dring);
+
+void ldc_free_exp_dring(struct ldc_channel *lp, void *buf, unsigned int len,
+			struct ldc_trans_cookie *cookies, int ncookies)
+{
+	ldc_unmap(lp, cookies, ncookies);
+	kfree(buf);
+}
+EXPORT_SYMBOL(ldc_free_exp_dring);
+
+static int __init ldc_init(void)
+{
+	unsigned long major, minor;
+	struct mdesc_handle *hp;
+	const u64 *v;
+	int err;
+	u64 mp;
+
+	hp = mdesc_grab();
+	if (!hp)
+		return -ENODEV;
+
+	mp = mdesc_node_by_name(hp, MDESC_NODE_NULL, "platform");
+	err = -ENODEV;
+	if (mp == MDESC_NODE_NULL)
+		goto out;
+
+	v = mdesc_get_property(hp, mp, "domaining-enabled", NULL);
+	if (!v)
+		goto out;
+
+	major = 1;
+	minor = 0;
+	if (sun4v_hvapi_register(HV_GRP_LDOM, major, &minor)) {
+		printk(KERN_INFO PFX "Could not register LDOM hvapi.\n");
+		goto out;
+	}
+
+	printk(KERN_INFO "%s", version);
+
+	if (!*v) {
+		printk(KERN_INFO PFX "Domaining disabled.\n");
+		goto out;
+	}
+	ldom_domaining_enabled = 1;
+	err = 0;
+
+out:
+	mdesc_release(hp);
+	return err;
+}
+
+core_initcall(ldc_init);
diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c
new file mode 100644
index 000000000000..3c539a6d7c18
--- /dev/null
+++ b/arch/sparc/kernel/mdesc.c
@@ -0,0 +1,917 @@
+/* mdesc.c: Sun4V machine description handling.
+ *
+ * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/lmb.h>
+#include <linux/log2.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/miscdevice.h>
+
+#include <asm/cpudata.h>
+#include <asm/hypervisor.h>
+#include <asm/mdesc.h>
+#include <asm/prom.h>
+#include <asm/oplib.h>
+#include <asm/smp.h>
+
+/* Unlike the OBP device tree, the machine description is a full-on
+ * DAG.  An arbitrary number of ARCs are possible from one
+ * node to other nodes and thus we can't use the OBP device_node
+ * data structure to represent these nodes inside of the kernel.
+ *
+ * Actually, it isn't even a DAG, because there are back pointers
+ * which create cycles in the graph.
+ *
+ * mdesc_hdr and mdesc_elem describe the layout of the data structure
+ * we get from the Hypervisor.
+ */
+struct mdesc_hdr {
+	u32	version; /* Transport version */
+	u32	node_sz; /* node block size */
+	u32	name_sz; /* name block size */
+	u32	data_sz; /* data block size */
+} __attribute__((aligned(16)));
+
+struct mdesc_elem {
+	u8	tag;
+#define MD_LIST_END	0x00
+#define MD_NODE		0x4e
+#define MD_NODE_END	0x45
+#define MD_NOOP		0x20
+#define MD_PROP_ARC	0x61
+#define MD_PROP_VAL	0x76
+#define MD_PROP_STR	0x73
+#define MD_PROP_DATA	0x64
+	u8	name_len;
+	u16	resv;
+	u32	name_offset;
+	union {
+		struct {
+			u32	data_len;
+			u32	data_offset;
+		} data;
+		u64	val;
+	} d;
+};
+
+struct mdesc_mem_ops {
+	struct mdesc_handle *(*alloc)(unsigned int mdesc_size);
+	void (*free)(struct mdesc_handle *handle);
+};
+
+struct mdesc_handle {
+	struct list_head	list;
+	struct mdesc_mem_ops	*mops;
+	void			*self_base;
+	atomic_t		refcnt;
+	unsigned int		handle_size;
+	struct mdesc_hdr	mdesc;
+};
+
+static void mdesc_handle_init(struct mdesc_handle *hp,
+			      unsigned int handle_size,
+			      void *base)
+{
+	BUG_ON(((unsigned long)&hp->mdesc) & (16UL - 1));
+
+	memset(hp, 0, handle_size);
+	INIT_LIST_HEAD(&hp->list);
+	hp->self_base = base;
+	atomic_set(&hp->refcnt, 1);
+	hp->handle_size = handle_size;
+}
+
+static struct mdesc_handle * __init mdesc_lmb_alloc(unsigned int mdesc_size)
+{
+	unsigned int handle_size, alloc_size;
+	struct mdesc_handle *hp;
+	unsigned long paddr;
+
+	handle_size = (sizeof(struct mdesc_handle) -
+		       sizeof(struct mdesc_hdr) +
+		       mdesc_size);
+	alloc_size = PAGE_ALIGN(handle_size);
+
+	paddr = lmb_alloc(alloc_size, PAGE_SIZE);
+
+	hp = NULL;
+	if (paddr) {
+		hp = __va(paddr);
+		mdesc_handle_init(hp, handle_size, hp);
+	}
+	return hp;
+}
+
+static void mdesc_lmb_free(struct mdesc_handle *hp)
+{
+	unsigned int alloc_size, handle_size = hp->handle_size;
+	unsigned long start, end;
+
+	BUG_ON(atomic_read(&hp->refcnt) != 0);
+	BUG_ON(!list_empty(&hp->list));
+
+	alloc_size = PAGE_ALIGN(handle_size);
+
+	start = (unsigned long) hp;
+	end = start + alloc_size;
+
+	while (start < end) {
+		struct page *p;
+
+		p = virt_to_page(start);
+		ClearPageReserved(p);
+		__free_page(p);
+		start += PAGE_SIZE;
+	}
+}
+
+static struct mdesc_mem_ops lmb_mdesc_ops = {
+	.alloc = mdesc_lmb_alloc,
+	.free  = mdesc_lmb_free,
+};
+
+static struct mdesc_handle *mdesc_kmalloc(unsigned int mdesc_size)
+{
+	unsigned int handle_size;
+	void *base;
+
+	handle_size = (sizeof(struct mdesc_handle) -
+		       sizeof(struct mdesc_hdr) +
+		       mdesc_size);
+
+	base = kmalloc(handle_size + 15, GFP_KERNEL | __GFP_NOFAIL);
+	if (base) {
+		struct mdesc_handle *hp;
+		unsigned long addr;
+
+		addr = (unsigned long)base;
+		addr = (addr + 15UL) & ~15UL;
+		hp = (struct mdesc_handle *) addr;
+
+		mdesc_handle_init(hp, handle_size, base);
+		return hp;
+	}
+
+	return NULL;
+}
+
+static void mdesc_kfree(struct mdesc_handle *hp)
+{
+	BUG_ON(atomic_read(&hp->refcnt) != 0);
+	BUG_ON(!list_empty(&hp->list));
+
+	kfree(hp->self_base);
+}
+
+static struct mdesc_mem_ops kmalloc_mdesc_memops = {
+	.alloc = mdesc_kmalloc,
+	.free  = mdesc_kfree,
+};
+
+static struct mdesc_handle *mdesc_alloc(unsigned int mdesc_size,
+					struct mdesc_mem_ops *mops)
+{
+	struct mdesc_handle *hp = mops->alloc(mdesc_size);
+
+	if (hp)
+		hp->mops = mops;
+
+	return hp;
+}
+
+static void mdesc_free(struct mdesc_handle *hp)
+{
+	hp->mops->free(hp);
+}
+
+static struct mdesc_handle *cur_mdesc;
+static LIST_HEAD(mdesc_zombie_list);
+static DEFINE_SPINLOCK(mdesc_lock);
+
+struct mdesc_handle *mdesc_grab(void)
+{
+	struct mdesc_handle *hp;
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdesc_lock, flags);
+	hp = cur_mdesc;
+	if (hp)
+		atomic_inc(&hp->refcnt);
+	spin_unlock_irqrestore(&mdesc_lock, flags);
+
+	return hp;
+}
+EXPORT_SYMBOL(mdesc_grab);
+
+void mdesc_release(struct mdesc_handle *hp)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mdesc_lock, flags);
+	if (atomic_dec_and_test(&hp->refcnt)) {
+		list_del_init(&hp->list);
+		hp->mops->free(hp);
+	}
+	spin_unlock_irqrestore(&mdesc_lock, flags);
+}
+EXPORT_SYMBOL(mdesc_release);
+
+static DEFINE_MUTEX(mdesc_mutex);
+static struct mdesc_notifier_client *client_list;
+
+void mdesc_register_notifier(struct mdesc_notifier_client *client)
+{
+	u64 node;
+
+	mutex_lock(&mdesc_mutex);
+	client->next = client_list;
+	client_list = client;
+
+	mdesc_for_each_node_by_name(cur_mdesc, node, client->node_name)
+		client->add(cur_mdesc, node);
+
+	mutex_unlock(&mdesc_mutex);
+}
+
+static const u64 *parent_cfg_handle(struct mdesc_handle *hp, u64 node)
+{
+	const u64 *id;
+	u64 a;
+
+	id = NULL;
+	mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) {
+		u64 target;
+
+		target = mdesc_arc_target(hp, a);
+		id = mdesc_get_property(hp, target,
+					"cfg-handle", NULL);
+		if (id)
+			break;
+	}
+
+	return id;
+}
+
+/* Run 'func' on nodes which are in A but not in B.  */
+static void invoke_on_missing(const char *name,
+			      struct mdesc_handle *a,
+			      struct mdesc_handle *b,
+			      void (*func)(struct mdesc_handle *, u64))
+{
+	u64 node;
+
+	mdesc_for_each_node_by_name(a, node, name) {
+		int found = 0, is_vdc_port = 0;
+		const char *name_prop;
+		const u64 *id;
+		u64 fnode;
+
+		name_prop = mdesc_get_property(a, node, "name", NULL);
+		if (name_prop && !strcmp(name_prop, "vdc-port")) {
+			is_vdc_port = 1;
+			id = parent_cfg_handle(a, node);
+		} else
+			id = mdesc_get_property(a, node, "id", NULL);
+
+		if (!id) {
+			printk(KERN_ERR "MD: Cannot find ID for %s node.\n",
+			       (name_prop ? name_prop : name));
+			continue;
+		}
+
+		mdesc_for_each_node_by_name(b, fnode, name) {
+			const u64 *fid;
+
+			if (is_vdc_port) {
+				name_prop = mdesc_get_property(b, fnode,
+							       "name", NULL);
+				if (!name_prop ||
+				    strcmp(name_prop, "vdc-port"))
+					continue;
+				fid = parent_cfg_handle(b, fnode);
+				if (!fid) {
+					printk(KERN_ERR "MD: Cannot find ID "
+					       "for vdc-port node.\n");
+					continue;
+				}
+			} else
+				fid = mdesc_get_property(b, fnode,
+							 "id", NULL);
+
+			if (*id == *fid) {
+				found = 1;
+				break;
+			}
+		}
+		if (!found)
+			func(a, node);
+	}
+}
+
+static void notify_one(struct mdesc_notifier_client *p,
+		       struct mdesc_handle *old_hp,
+		       struct mdesc_handle *new_hp)
+{
+	invoke_on_missing(p->node_name, old_hp, new_hp, p->remove);
+	invoke_on_missing(p->node_name, new_hp, old_hp, p->add);
+}
+
+static void mdesc_notify_clients(struct mdesc_handle *old_hp,
+				 struct mdesc_handle *new_hp)
+{
+	struct mdesc_notifier_client *p = client_list;
+
+	while (p) {
+		notify_one(p, old_hp, new_hp);
+		p = p->next;
+	}
+}
+
+void mdesc_update(void)
+{
+	unsigned long len, real_len, status;
+	struct mdesc_handle *hp, *orig_hp;
+	unsigned long flags;
+
+	mutex_lock(&mdesc_mutex);
+
+	(void) sun4v_mach_desc(0UL, 0UL, &len);
+
+	hp = mdesc_alloc(len, &kmalloc_mdesc_memops);
+	if (!hp) {
+		printk(KERN_ERR "MD: mdesc alloc fails\n");
+		goto out;
+	}
+
+	status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len);
+	if (status != HV_EOK || real_len > len) {
+		printk(KERN_ERR "MD: mdesc reread fails with %lu\n",
+		       status);
+		atomic_dec(&hp->refcnt);
+		mdesc_free(hp);
+		goto out;
+	}
+
+	spin_lock_irqsave(&mdesc_lock, flags);
+	orig_hp = cur_mdesc;
+	cur_mdesc = hp;
+	spin_unlock_irqrestore(&mdesc_lock, flags);
+
+	mdesc_notify_clients(orig_hp, hp);
+
+	spin_lock_irqsave(&mdesc_lock, flags);
+	if (atomic_dec_and_test(&orig_hp->refcnt))
+		mdesc_free(orig_hp);
+	else
+		list_add(&orig_hp->list, &mdesc_zombie_list);
+	spin_unlock_irqrestore(&mdesc_lock, flags);
+
+out:
+	mutex_unlock(&mdesc_mutex);
+}
+
+static struct mdesc_elem *node_block(struct mdesc_hdr *mdesc)
+{
+	return (struct mdesc_elem *) (mdesc + 1);
+}
+
+static void *name_block(struct mdesc_hdr *mdesc)
+{
+	return ((void *) node_block(mdesc)) + mdesc->node_sz;
+}
+
+static void *data_block(struct mdesc_hdr *mdesc)
+{
+	return ((void *) name_block(mdesc)) + mdesc->name_sz;
+}
+
+u64 mdesc_node_by_name(struct mdesc_handle *hp,
+		       u64 from_node, const char *name)
+{
+	struct mdesc_elem *ep = node_block(&hp->mdesc);
+	const char *names = name_block(&hp->mdesc);
+	u64 last_node = hp->mdesc.node_sz / 16;
+	u64 ret;
+
+	if (from_node == MDESC_NODE_NULL) {
+		ret = from_node = 0;
+	} else if (from_node >= last_node) {
+		return MDESC_NODE_NULL;
+	} else {
+		ret = ep[from_node].d.val;
+	}
+
+	while (ret < last_node) {
+		if (ep[ret].tag != MD_NODE)
+			return MDESC_NODE_NULL;
+		if (!strcmp(names + ep[ret].name_offset, name))
+			break;
+		ret = ep[ret].d.val;
+	}
+	if (ret >= last_node)
+		ret = MDESC_NODE_NULL;
+	return ret;
+}
+EXPORT_SYMBOL(mdesc_node_by_name);
+
+const void *mdesc_get_property(struct mdesc_handle *hp, u64 node,
+			       const char *name, int *lenp)
+{
+	const char *names = name_block(&hp->mdesc);
+	u64 last_node = hp->mdesc.node_sz / 16;
+	void *data = data_block(&hp->mdesc);
+	struct mdesc_elem *ep;
+
+	if (node == MDESC_NODE_NULL || node >= last_node)
+		return NULL;
+
+	ep = node_block(&hp->mdesc) + node;
+	ep++;
+	for (; ep->tag != MD_NODE_END; ep++) {
+		void *val = NULL;
+		int len = 0;
+
+		switch (ep->tag) {
+		case MD_PROP_VAL:
+			val = &ep->d.val;
+			len = 8;
+			break;
+
+		case MD_PROP_STR:
+		case MD_PROP_DATA:
+			val = data + ep->d.data.data_offset;
+			len = ep->d.data.data_len;
+			break;
+
+		default:
+			break;
+		}
+		if (!val)
+			continue;
+
+		if (!strcmp(names + ep->name_offset, name)) {
+			if (lenp)
+				*lenp = len;
+			return val;
+		}
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL(mdesc_get_property);
+
+u64 mdesc_next_arc(struct mdesc_handle *hp, u64 from, const char *arc_type)
+{
+	struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
+	const char *names = name_block(&hp->mdesc);
+	u64 last_node = hp->mdesc.node_sz / 16;
+
+	if (from == MDESC_NODE_NULL || from >= last_node)
+		return MDESC_NODE_NULL;
+
+	ep = base + from;
+
+	ep++;
+	for (; ep->tag != MD_NODE_END; ep++) {
+		if (ep->tag != MD_PROP_ARC)
+			continue;
+
+		if (strcmp(names + ep->name_offset, arc_type))
+			continue;
+
+		return ep - base;
+	}
+
+	return MDESC_NODE_NULL;
+}
+EXPORT_SYMBOL(mdesc_next_arc);
+
+u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc)
+{
+	struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
+
+	ep = base + arc;
+
+	return ep->d.val;
+}
+EXPORT_SYMBOL(mdesc_arc_target);
+
+const char *mdesc_node_name(struct mdesc_handle *hp, u64 node)
+{
+	struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
+	const char *names = name_block(&hp->mdesc);
+	u64 last_node = hp->mdesc.node_sz / 16;
+
+	if (node == MDESC_NODE_NULL || node >= last_node)
+		return NULL;
+
+	ep = base + node;
+	if (ep->tag != MD_NODE)
+		return NULL;
+
+	return names + ep->name_offset;
+}
+EXPORT_SYMBOL(mdesc_node_name);
+
+static void __init report_platform_properties(void)
+{
+	struct mdesc_handle *hp = mdesc_grab();
+	u64 pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "platform");
+	const char *s;
+	const u64 *v;
+
+	if (pn == MDESC_NODE_NULL) {
+		prom_printf("No platform node in machine-description.\n");
+		prom_halt();
+	}
+
+	s = mdesc_get_property(hp, pn, "banner-name", NULL);
+	printk("PLATFORM: banner-name [%s]\n", s);
+	s = mdesc_get_property(hp, pn, "name", NULL);
+	printk("PLATFORM: name [%s]\n", s);
+
+	v = mdesc_get_property(hp, pn, "hostid", NULL);
+	if (v)
+		printk("PLATFORM: hostid [%08lx]\n", *v);
+	v = mdesc_get_property(hp, pn, "serial#", NULL);
+	if (v)
+		printk("PLATFORM: serial# [%08lx]\n", *v);
+	v = mdesc_get_property(hp, pn, "stick-frequency", NULL);
+	printk("PLATFORM: stick-frequency [%08lx]\n", *v);
+	v = mdesc_get_property(hp, pn, "mac-address", NULL);
+	if (v)
+		printk("PLATFORM: mac-address [%lx]\n", *v);
+	v = mdesc_get_property(hp, pn, "watchdog-resolution", NULL);
+	if (v)
+		printk("PLATFORM: watchdog-resolution [%lu ms]\n", *v);
+	v = mdesc_get_property(hp, pn, "watchdog-max-timeout", NULL);
+	if (v)
+		printk("PLATFORM: watchdog-max-timeout [%lu ms]\n", *v);
+	v = mdesc_get_property(hp, pn, "max-cpus", NULL);
+	if (v)
+		printk("PLATFORM: max-cpus [%lu]\n", *v);
+
+#ifdef CONFIG_SMP
+	{
+		int max_cpu, i;
+
+		if (v) {
+			max_cpu = *v;
+			if (max_cpu > NR_CPUS)
+				max_cpu = NR_CPUS;
+		} else {
+			max_cpu = NR_CPUS;
+		}
+		for (i = 0; i < max_cpu; i++)
+			cpu_set(i, cpu_possible_map);
+	}
+#endif
+
+	mdesc_release(hp);
+}
+
+static void __devinit fill_in_one_cache(cpuinfo_sparc *c,
+					struct mdesc_handle *hp,
+					u64 mp)
+{
+	const u64 *level = mdesc_get_property(hp, mp, "level", NULL);
+	const u64 *size = mdesc_get_property(hp, mp, "size", NULL);
+	const u64 *line_size = mdesc_get_property(hp, mp, "line-size", NULL);
+	const char *type;
+	int type_len;
+
+	type = mdesc_get_property(hp, mp, "type", &type_len);
+
+	switch (*level) {
+	case 1:
+		if (of_find_in_proplist(type, "instn", type_len)) {
+			c->icache_size = *size;
+			c->icache_line_size = *line_size;
+		} else if (of_find_in_proplist(type, "data", type_len)) {
+			c->dcache_size = *size;
+			c->dcache_line_size = *line_size;
+		}
+		break;
+
+	case 2:
+		c->ecache_size = *size;
+		c->ecache_line_size = *line_size;
+		break;
+
+	default:
+		break;
+	}
+
+	if (*level == 1) {
+		u64 a;
+
+		mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
+			u64 target = mdesc_arc_target(hp, a);
+			const char *name = mdesc_node_name(hp, target);
+
+			if (!strcmp(name, "cache"))
+				fill_in_one_cache(c, hp, target);
+		}
+	}
+}
+
+static void __devinit mark_core_ids(struct mdesc_handle *hp, u64 mp,
+				    int core_id)
+{
+	u64 a;
+
+	mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
+		u64 t = mdesc_arc_target(hp, a);
+		const char *name;
+		const u64 *id;
+
+		name = mdesc_node_name(hp, t);
+		if (!strcmp(name, "cpu")) {
+			id = mdesc_get_property(hp, t, "id", NULL);
+			if (*id < NR_CPUS)
+				cpu_data(*id).core_id = core_id;
+		} else {
+			u64 j;
+
+			mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_BACK) {
+				u64 n = mdesc_arc_target(hp, j);
+				const char *n_name;
+
+				n_name = mdesc_node_name(hp, n);
+				if (strcmp(n_name, "cpu"))
+					continue;
+
+				id = mdesc_get_property(hp, n, "id", NULL);
+				if (*id < NR_CPUS)
+					cpu_data(*id).core_id = core_id;
+			}
+		}
+	}
+}
+
+static void __devinit set_core_ids(struct mdesc_handle *hp)
+{
+	int idx;
+	u64 mp;
+
+	idx = 1;
+	mdesc_for_each_node_by_name(hp, mp, "cache") {
+		const u64 *level;
+		const char *type;
+		int len;
+
+		level = mdesc_get_property(hp, mp, "level", NULL);
+		if (*level != 1)
+			continue;
+
+		type = mdesc_get_property(hp, mp, "type", &len);
+		if (!of_find_in_proplist(type, "instn", len))
+			continue;
+
+		mark_core_ids(hp, mp, idx);
+
+		idx++;
+	}
+}
+
+static void __devinit mark_proc_ids(struct mdesc_handle *hp, u64 mp,
+				    int proc_id)
+{
+	u64 a;
+
+	mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
+		u64 t = mdesc_arc_target(hp, a);
+		const char *name;
+		const u64 *id;
+
+		name = mdesc_node_name(hp, t);
+		if (strcmp(name, "cpu"))
+			continue;
+
+		id = mdesc_get_property(hp, t, "id", NULL);
+		if (*id < NR_CPUS)
+			cpu_data(*id).proc_id = proc_id;
+	}
+}
+
+static void __devinit __set_proc_ids(struct mdesc_handle *hp,
+				     const char *exec_unit_name)
+{
+	int idx;
+	u64 mp;
+
+	idx = 0;
+	mdesc_for_each_node_by_name(hp, mp, exec_unit_name) {
+		const char *type;
+		int len;
+
+		type = mdesc_get_property(hp, mp, "type", &len);
+		if (!of_find_in_proplist(type, "int", len) &&
+		    !of_find_in_proplist(type, "integer", len))
+			continue;
+
+		mark_proc_ids(hp, mp, idx);
+
+		idx++;
+	}
+}
+
+static void __devinit set_proc_ids(struct mdesc_handle *hp)
+{
+	__set_proc_ids(hp, "exec_unit");
+	__set_proc_ids(hp, "exec-unit");
+}
+
+static void __devinit get_one_mondo_bits(const u64 *p, unsigned int *mask,
+					 unsigned char def)
+{
+	u64 val;
+
+	if (!p)
+		goto use_default;
+	val = *p;
+
+	if (!val || val >= 64)
+		goto use_default;
+
+	*mask = ((1U << val) * 64U) - 1U;
+	return;
+
+use_default:
+	*mask = ((1U << def) * 64U) - 1U;
+}
+
+static void __devinit get_mondo_data(struct mdesc_handle *hp, u64 mp,
+				     struct trap_per_cpu *tb)
+{
+	const u64 *val;
+
+	val = mdesc_get_property(hp, mp, "q-cpu-mondo-#bits", NULL);
+	get_one_mondo_bits(val, &tb->cpu_mondo_qmask, 7);
+
+	val = mdesc_get_property(hp, mp, "q-dev-mondo-#bits", NULL);
+	get_one_mondo_bits(val, &tb->dev_mondo_qmask, 7);
+
+	val = mdesc_get_property(hp, mp, "q-resumable-#bits", NULL);
+	get_one_mondo_bits(val, &tb->resum_qmask, 6);
+
+	val = mdesc_get_property(hp, mp, "q-nonresumable-#bits", NULL);
+	get_one_mondo_bits(val, &tb->nonresum_qmask, 2);
+}
+
+void __cpuinit mdesc_fill_in_cpu_data(cpumask_t mask)
+{
+	struct mdesc_handle *hp = mdesc_grab();
+	u64 mp;
+
+	ncpus_probed = 0;
+	mdesc_for_each_node_by_name(hp, mp, "cpu") {
+		const u64 *id = mdesc_get_property(hp, mp, "id", NULL);
+		const u64 *cfreq = mdesc_get_property(hp, mp, "clock-frequency", NULL);
+		struct trap_per_cpu *tb;
+		cpuinfo_sparc *c;
+		int cpuid;
+		u64 a;
+
+		ncpus_probed++;
+
+		cpuid = *id;
+
+#ifdef CONFIG_SMP
+		if (cpuid >= NR_CPUS) {
+			printk(KERN_WARNING "Ignoring CPU %d which is "
+			       ">= NR_CPUS (%d)\n",
+			       cpuid, NR_CPUS);
+			continue;
+		}
+		if (!cpu_isset(cpuid, mask))
+			continue;
+#else
+		/* On uniprocessor we only want the values for the
+		 * real physical cpu the kernel booted onto, however
+		 * cpu_data() only has one entry at index 0.
+		 */
+		if (cpuid != real_hard_smp_processor_id())
+			continue;
+		cpuid = 0;
+#endif
+
+		c = &cpu_data(cpuid);
+		c->clock_tick = *cfreq;
+
+		tb = &trap_block[cpuid];
+		get_mondo_data(hp, mp, tb);
+
+		mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
+			u64 j, t = mdesc_arc_target(hp, a);
+			const char *t_name;
+
+			t_name = mdesc_node_name(hp, t);
+			if (!strcmp(t_name, "cache")) {
+				fill_in_one_cache(c, hp, t);
+				continue;
+			}
+
+			mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_FWD) {
+				u64 n = mdesc_arc_target(hp, j);
+				const char *n_name;
+
+				n_name = mdesc_node_name(hp, n);
+				if (!strcmp(n_name, "cache"))
+					fill_in_one_cache(c, hp, n);
+			}
+		}
+
+#ifdef CONFIG_SMP
+		cpu_set(cpuid, cpu_present_map);
+#endif
+
+		c->core_id = 0;
+		c->proc_id = -1;
+	}
+
+#ifdef CONFIG_SMP
+	sparc64_multi_core = 1;
+#endif
+
+	set_core_ids(hp);
+	set_proc_ids(hp);
+
+	smp_fill_in_sib_core_maps();
+
+	mdesc_release(hp);
+}
+
+static ssize_t mdesc_read(struct file *file, char __user *buf,
+			  size_t len, loff_t *offp)
+{
+	struct mdesc_handle *hp = mdesc_grab();
+	int err;
+
+	if (!hp)
+		return -ENODEV;
+
+	err = hp->handle_size;
+	if (len < hp->handle_size)
+		err = -EMSGSIZE;
+	else if (copy_to_user(buf, &hp->mdesc, hp->handle_size))
+		err = -EFAULT;
+	mdesc_release(hp);
+
+	return err;
+}
+
+static const struct file_operations mdesc_fops = {
+	.read	= mdesc_read,
+	.owner	= THIS_MODULE,
+};
+
+static struct miscdevice mdesc_misc = {
+	.minor	= MISC_DYNAMIC_MINOR,
+	.name	= "mdesc",
+	.fops	= &mdesc_fops,
+};
+
+static int __init mdesc_misc_init(void)
+{
+	return misc_register(&mdesc_misc);
+}
+
+__initcall(mdesc_misc_init);
+
+void __init sun4v_mdesc_init(void)
+{
+	struct mdesc_handle *hp;
+	unsigned long len, real_len, status;
+	cpumask_t mask;
+
+	(void) sun4v_mach_desc(0UL, 0UL, &len);
+
+	printk("MDESC: Size is %lu bytes.\n", len);
+
+	hp = mdesc_alloc(len, &lmb_mdesc_ops);
+	if (hp == NULL) {
+		prom_printf("MDESC: alloc of %lu bytes failed.\n", len);
+		prom_halt();
+	}
+
+	status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len);
+	if (status != HV_EOK || real_len > len) {
+		prom_printf("sun4v_mach_desc fails, err(%lu), "
+			    "len(%lu), real_len(%lu)\n",
+			    status, len, real_len);
+		mdesc_free(hp);
+		prom_halt();
+	}
+
+	cur_mdesc = hp;
+
+	report_platform_properties();
+
+	cpus_setall(mask);
+	mdesc_fill_in_cpu_data(mask);
+}
diff --git a/arch/sparc/kernel/misctrap.S b/arch/sparc/kernel/misctrap.S
new file mode 100644
index 000000000000..753b4f031bfb
--- /dev/null
+++ b/arch/sparc/kernel/misctrap.S
@@ -0,0 +1,97 @@
+#ifdef CONFIG_KGDB
+	.globl		arch_kgdb_breakpoint
+	.type		arch_kgdb_breakpoint,#function
+arch_kgdb_breakpoint:
+	ta		0x72
+	retl
+	 nop
+	.size		arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
+#endif
+
+	.type		__do_privact,#function
+__do_privact:
+	mov		TLB_SFSR, %g3
+	stxa		%g0, [%g3] ASI_DMMU	! Clear FaultValid bit
+	membar		#Sync
+	sethi		%hi(109f), %g7
+	ba,pt		%xcc, etrap
+109:	or		%g7, %lo(109b), %g7
+	call		do_privact
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		__do_privact,.-__do_privact
+
+	.type		do_mna,#function
+do_mna:
+	rdpr		%tl, %g3
+	cmp		%g3, 1
+
+	/* Setup %g4/%g5 now as they are used in the
+	 * winfixup code.
+	 */
+	mov		TLB_SFSR, %g3
+	mov		DMMU_SFAR, %g4
+	ldxa		[%g4] ASI_DMMU, %g4
+	ldxa		[%g3] ASI_DMMU, %g5
+	stxa		%g0, [%g3] ASI_DMMU	! Clear FaultValid bit
+	membar		#Sync
+	bgu,pn		%icc, winfix_mna
+	 rdpr		%tpc, %g3
+
+1:	sethi		%hi(109f), %g7
+	ba,pt		%xcc, etrap
+109:	 or		%g7, %lo(109b), %g7
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		mem_address_unaligned
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		do_mna,.-do_mna
+
+	.type		do_lddfmna,#function
+do_lddfmna:
+	sethi		%hi(109f), %g7
+	mov		TLB_SFSR, %g4
+	ldxa		[%g4] ASI_DMMU, %g5
+	stxa		%g0, [%g4] ASI_DMMU	! Clear FaultValid bit
+	membar		#Sync
+	mov		DMMU_SFAR, %g4
+	ldxa		[%g4] ASI_DMMU, %g4
+	ba,pt		%xcc, etrap
+109:	 or		%g7, %lo(109b), %g7
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		handle_lddfmna
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		do_lddfmna,.-do_lddfmna
+
+	.type		do_stdfmna,#function
+do_stdfmna:
+	sethi		%hi(109f), %g7
+	mov		TLB_SFSR, %g4
+	ldxa		[%g4] ASI_DMMU, %g5
+	stxa		%g0, [%g4] ASI_DMMU	! Clear FaultValid bit
+	membar		#Sync
+	mov		DMMU_SFAR, %g4
+	ldxa		[%g4] ASI_DMMU, %g4
+	ba,pt		%xcc, etrap
+109:	 or		%g7, %lo(109b), %g7
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		handle_stdfmna
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		do_stdfmna,.-do_stdfmna
+
+	.type		breakpoint_trap,#function
+breakpoint_trap:
+	call		sparc_breakpoint
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		breakpoint_trap,.-breakpoint_trap
diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
index 598682f31ebf..90273765e81f 100644
--- a/arch/sparc/kernel/module.c
+++ b/arch/sparc/kernel/module.c
@@ -1,4 +1,4 @@
-/* Kernel module help for sparc32.
+/* Kernel module help for sparc64.
  *
  * Copyright (C) 2001 Rusty Russell.
  * Copyright (C) 2002 David S. Miller.
@@ -11,6 +11,48 @@
 #include <linux/fs.h>
 #include <linux/string.h>
 #include <linux/ctype.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+
+#include <asm/processor.h>
+#include <asm/spitfire.h>
+
+#ifdef CONFIG_SPARC64
+static void *module_map(unsigned long size)
+{
+	struct vm_struct *area;
+
+	size = PAGE_ALIGN(size);
+	if (!size || size > MODULES_LEN)
+		return NULL;
+
+	area = __get_vm_area(size, VM_ALLOC, MODULES_VADDR, MODULES_END);
+	if (!area)
+		return NULL;
+
+	return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL);
+}
+
+static char *dot2underscore(char *name)
+{
+	return name;
+}
+#else
+static void *module_map(unsigned long size)
+{
+	return vmalloc(size);
+}
+
+/* Replace references to .func with _Func */
+static char *dot2underscore(char *name)
+{
+	if (name[0] == '.') {
+		name[0] = '_';
+                name[1] = toupper(name[1]);
+	}
+	return name;
+}
+#endif /* CONFIG_SPARC64 */
 
 void *module_alloc(unsigned long size)
 {
@@ -20,7 +62,7 @@ void *module_alloc(unsigned long size)
 	if (size == 0)
 		return NULL;
 
-	ret = vmalloc(size);
+	ret = module_map(size);
 	if (!ret)
 		ret = ERR_PTR(-ENOMEM);
 	else
@@ -37,16 +79,14 @@ void module_free(struct module *mod, void *module_region)
            table entries. */
 }
 
-/* Make generic code ignore STT_REGISTER dummy undefined symbols,
- * and replace references to .func with _Func
- */
+/* Make generic code ignore STT_REGISTER dummy undefined symbols.  */
 int module_frob_arch_sections(Elf_Ehdr *hdr,
 			      Elf_Shdr *sechdrs,
 			      char *secstrings,
 			      struct module *mod)
 {
 	unsigned int symidx;
-	Elf32_Sym *sym;
+	Elf_Sym *sym;
 	char *strtab;
 	int i;
 
@@ -56,26 +96,23 @@ int module_frob_arch_sections(Elf_Ehdr *hdr,
 			return -ENOEXEC;
 		}
 	}
-	sym = (Elf32_Sym *)sechdrs[symidx].sh_addr;
+	sym = (Elf_Sym *)sechdrs[symidx].sh_addr;
 	strtab = (char *)sechdrs[sechdrs[symidx].sh_link].sh_addr;
 
 	for (i = 1; i < sechdrs[symidx].sh_size / sizeof(Elf_Sym); i++) {
 		if (sym[i].st_shndx == SHN_UNDEF) {
-			if (ELF32_ST_TYPE(sym[i].st_info) == STT_REGISTER)
+			if (ELF_ST_TYPE(sym[i].st_info) == STT_REGISTER) {
 				sym[i].st_shndx = SHN_ABS;
-			else {
+			} else {
 				char *name = strtab + sym[i].st_name;
-				if (name[0] == '.') {
-					name[0] = '_';
-					name[1] = toupper(name[1]);
-				}
+				dot2underscore(name);
 			}
 		}
 	}
 	return 0;
 }
 
-int apply_relocate(Elf32_Shdr *sechdrs,
+int apply_relocate(Elf_Shdr *sechdrs,
 		   const char *strtab,
 		   unsigned int symindex,
 		   unsigned int relsec,
@@ -86,32 +123,68 @@ int apply_relocate(Elf32_Shdr *sechdrs,
 	return -ENOEXEC;
 }
 
-int apply_relocate_add(Elf32_Shdr *sechdrs,
+int apply_relocate_add(Elf_Shdr *sechdrs,
 		       const char *strtab,
 		       unsigned int symindex,
 		       unsigned int relsec,
 		       struct module *me)
 {
 	unsigned int i;
-	Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
-	Elf32_Sym *sym;
+	Elf_Rela *rel = (void *)sechdrs[relsec].sh_addr;
+	Elf_Sym *sym;
 	u8 *location;
 	u32 *loc32;
 
 	for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
-		Elf32_Addr v;
+		Elf_Addr v;
 
 		/* This is where to make the change */
 		location = (u8 *)sechdrs[sechdrs[relsec].sh_info].sh_addr
 			+ rel[i].r_offset;
 		loc32 = (u32 *) location;
+
+#ifdef CONFIG_SPARC64
+		BUG_ON(((u64)location >> (u64)32) != (u64)0);
+#endif /* CONFIG_SPARC64 */
+
 		/* This is the symbol it is referring to.  Note that all
 		   undefined symbols have been resolved.  */
-		sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
-			+ ELF32_R_SYM(rel[i].r_info);
+		sym = (Elf_Sym *)sechdrs[symindex].sh_addr
+			+ ELF_R_SYM(rel[i].r_info);
 		v = sym->st_value + rel[i].r_addend;
 
-		switch (ELF32_R_TYPE(rel[i].r_info)) {
+		switch (ELF_R_TYPE(rel[i].r_info) & 0xff) {
+#ifdef CONFIG_SPARC64
+		case R_SPARC_64:
+			location[0] = v >> 56;
+			location[1] = v >> 48;
+			location[2] = v >> 40;
+			location[3] = v >> 32;
+			location[4] = v >> 24;
+			location[5] = v >> 16;
+			location[6] = v >>  8;
+			location[7] = v >>  0;
+			break;
+
+		case R_SPARC_DISP32:
+			v -= (Elf_Addr) location;
+			*loc32 = v;
+			break;
+
+		case R_SPARC_WDISP19:
+			v -= (Elf_Addr) location;
+			*loc32 = (*loc32 & ~0x7ffff) |
+				((v >> 2) & 0x7ffff);
+			break;
+
+		case R_SPARC_OLO10:
+			*loc32 = (*loc32 & ~0x1fff) |
+				(((v & 0x3ff) +
+				  (ELF_R_TYPE(rel[i].r_info) >> 8))
+				 & 0x1fff);
+			break;
+#endif /* CONFIG_SPARC64 */
+
 		case R_SPARC_32:
 		case R_SPARC_UA32:
 			location[0] = v >> 24;
@@ -121,13 +194,13 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
 			break;
 
 		case R_SPARC_WDISP30:
-			v -= (Elf32_Addr) location;
+			v -= (Elf_Addr) location;
 			*loc32 = (*loc32 & ~0x3fffffff) |
 				((v >> 2) & 0x3fffffff);
 			break;
 
 		case R_SPARC_WDISP22:
-			v -= (Elf32_Addr) location;
+			v -= (Elf_Addr) location;
 			*loc32 = (*loc32 & ~0x3fffff) |
 				((v >> 2) & 0x3fffff);
 			break;
@@ -144,19 +217,38 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
 		default:
 			printk(KERN_ERR "module %s: Unknown relocation: %x\n",
 			       me->name,
-			       (int) (ELF32_R_TYPE(rel[i].r_info) & 0xff));
+			       (int) (ELF_R_TYPE(rel[i].r_info) & 0xff));
 			return -ENOEXEC;
 		};
 	}
 	return 0;
 }
 
+#ifdef CONFIG_SPARC64
 int module_finalize(const Elf_Ehdr *hdr,
 		    const Elf_Shdr *sechdrs,
 		    struct module *me)
 {
+	/* Cheetah's I-cache is fully coherent.  */
+	if (tlb_type == spitfire) {
+		unsigned long va;
+
+		flushw_all();
+		for (va =  0; va < (PAGE_SIZE << 1); va += 32)
+			spitfire_put_icache_tag(va, 0x0);
+		__asm__ __volatile__("flush %g6");
+	}
+
 	return 0;
 }
+#else
+int module_finalize(const Elf_Ehdr *hdr,
+                    const Elf_Shdr *sechdrs,
+                    struct module *me)
+{
+        return 0;
+}
+#endif /* CONFIG_SPARC64 */
 
 void module_arch_cleanup(struct module *mod)
 {
diff --git a/arch/sparc/kernel/muldiv.c b/arch/sparc/kernel/muldiv.c
index e352239e72c8..ba960c02bb55 100644
--- a/arch/sparc/kernel/muldiv.c
+++ b/arch/sparc/kernel/muldiv.c
@@ -17,6 +17,8 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 
+#include "kernel.h"
+
 /* #define DEBUG_MULDIV */
 
 static inline int has_imm13(int insn)
@@ -88,9 +90,6 @@ store_reg(unsigned int result, unsigned int reg, struct pt_regs *regs)
 		return (put_user(result, &win->locals[reg - 16]));
 	}
 }
-		
-extern void handle_hw_divzero (struct pt_regs *regs, unsigned long pc,
-			       unsigned long npc, unsigned long psr);
 
 /* Should return 0 if mul/div emulation succeeded and SIGILL should
  * not be issued.
diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device_32.c
index 0a83bd737654..0a83bd737654 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/kernel/of_device_32.c
diff --git a/arch/sparc/kernel/of_device_64.c b/arch/sparc/kernel/of_device_64.c
new file mode 100644
index 000000000000..4873f28905b0
--- /dev/null
+++ b/arch/sparc/kernel/of_device_64.c
@@ -0,0 +1,898 @@
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/irq.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+
+void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name)
+{
+	unsigned long ret = res->start + offset;
+	struct resource *r;
+
+	if (res->flags & IORESOURCE_MEM)
+		r = request_mem_region(ret, size, name);
+	else
+		r = request_region(ret, size, name);
+	if (!r)
+		ret = 0;
+
+	return (void __iomem *) ret;
+}
+EXPORT_SYMBOL(of_ioremap);
+
+void of_iounmap(struct resource *res, void __iomem *base, unsigned long size)
+{
+	if (res->flags & IORESOURCE_MEM)
+		release_mem_region((unsigned long) base, size);
+	else
+		release_region((unsigned long) base, size);
+}
+EXPORT_SYMBOL(of_iounmap);
+
+static int node_match(struct device *dev, void *data)
+{
+	struct of_device *op = to_of_device(dev);
+	struct device_node *dp = data;
+
+	return (op->node == dp);
+}
+
+struct of_device *of_find_device_by_node(struct device_node *dp)
+{
+	struct device *dev = bus_find_device(&of_platform_bus_type, NULL,
+					     dp, node_match);
+
+	if (dev)
+		return to_of_device(dev);
+
+	return NULL;
+}
+EXPORT_SYMBOL(of_find_device_by_node);
+
+unsigned int irq_of_parse_and_map(struct device_node *node, int index)
+{
+	struct of_device *op = of_find_device_by_node(node);
+
+	if (!op || index >= op->num_irqs)
+		return 0;
+
+	return op->irqs[index];
+}
+EXPORT_SYMBOL(irq_of_parse_and_map);
+
+/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
+ * BUS and propagate to all child of_device objects.
+ */
+void of_propagate_archdata(struct of_device *bus)
+{
+	struct dev_archdata *bus_sd = &bus->dev.archdata;
+	struct device_node *bus_dp = bus->node;
+	struct device_node *dp;
+
+	for (dp = bus_dp->child; dp; dp = dp->sibling) {
+		struct of_device *op = of_find_device_by_node(dp);
+
+		op->dev.archdata.iommu = bus_sd->iommu;
+		op->dev.archdata.stc = bus_sd->stc;
+		op->dev.archdata.host_controller = bus_sd->host_controller;
+		op->dev.archdata.numa_node = bus_sd->numa_node;
+
+		if (dp->child)
+			of_propagate_archdata(op);
+	}
+}
+
+struct bus_type of_platform_bus_type;
+EXPORT_SYMBOL(of_platform_bus_type);
+
+static inline u64 of_read_addr(const u32 *cell, int size)
+{
+	u64 r = 0;
+	while (size--)
+		r = (r << 32) | *(cell++);
+	return r;
+}
+
+static void __init get_cells(struct device_node *dp,
+			     int *addrc, int *sizec)
+{
+	if (addrc)
+		*addrc = of_n_addr_cells(dp);
+	if (sizec)
+		*sizec = of_n_size_cells(dp);
+}
+
+/* Max address size we deal with */
+#define OF_MAX_ADDR_CELLS	4
+
+struct of_bus {
+	const char	*name;
+	const char	*addr_prop_name;
+	int		(*match)(struct device_node *parent);
+	void		(*count_cells)(struct device_node *child,
+				       int *addrc, int *sizec);
+	int		(*map)(u32 *addr, const u32 *range,
+			       int na, int ns, int pna);
+	unsigned long	(*get_flags)(const u32 *addr, unsigned long);
+};
+
+/*
+ * Default translator (generic bus)
+ */
+
+static void of_bus_default_count_cells(struct device_node *dev,
+				       int *addrc, int *sizec)
+{
+	get_cells(dev, addrc, sizec);
+}
+
+/* Make sure the least significant 64-bits are in-range.  Even
+ * for 3 or 4 cell values it is a good enough approximation.
+ */
+static int of_out_of_range(const u32 *addr, const u32 *base,
+			   const u32 *size, int na, int ns)
+{
+	u64 a = of_read_addr(addr, na);
+	u64 b = of_read_addr(base, na);
+
+	if (a < b)
+		return 1;
+
+	b += of_read_addr(size, ns);
+	if (a >= b)
+		return 1;
+
+	return 0;
+}
+
+static int of_bus_default_map(u32 *addr, const u32 *range,
+			      int na, int ns, int pna)
+{
+	u32 result[OF_MAX_ADDR_CELLS];
+	int i;
+
+	if (ns > 2) {
+		printk("of_device: Cannot handle size cells (%d) > 2.", ns);
+		return -EINVAL;
+	}
+
+	if (of_out_of_range(addr, range, range + na + pna, na, ns))
+		return -EINVAL;
+
+	/* Start with the parent range base.  */
+	memcpy(result, range + na, pna * 4);
+
+	/* Add in the child address offset.  */
+	for (i = 0; i < na; i++)
+		result[pna - 1 - i] +=
+			(addr[na - 1 - i] -
+			 range[na - 1 - i]);
+
+	memcpy(addr, result, pna * 4);
+
+	return 0;
+}
+
+static unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags)
+{
+	if (flags)
+		return flags;
+	return IORESOURCE_MEM;
+}
+
+/*
+ * PCI bus specific translator
+ */
+
+static int of_bus_pci_match(struct device_node *np)
+{
+	if (!strcmp(np->name, "pci")) {
+		const char *model = of_get_property(np, "model", NULL);
+
+		if (model && !strcmp(model, "SUNW,simba"))
+			return 0;
+
+		/* Do not do PCI specific frobbing if the
+		 * PCI bridge lacks a ranges property.  We
+		 * want to pass it through up to the next
+		 * parent as-is, not with the PCI translate
+		 * method which chops off the top address cell.
+		 */
+		if (!of_find_property(np, "ranges", NULL))
+			return 0;
+
+		return 1;
+	}
+
+	return 0;
+}
+
+static int of_bus_simba_match(struct device_node *np)
+{
+	const char *model = of_get_property(np, "model", NULL);
+
+	if (model && !strcmp(model, "SUNW,simba"))
+		return 1;
+
+	/* Treat PCI busses lacking ranges property just like
+	 * simba.
+	 */
+	if (!strcmp(np->name, "pci")) {
+		if (!of_find_property(np, "ranges", NULL))
+			return 1;
+	}
+
+	return 0;
+}
+
+static int of_bus_simba_map(u32 *addr, const u32 *range,
+			    int na, int ns, int pna)
+{
+	return 0;
+}
+
+static void of_bus_pci_count_cells(struct device_node *np,
+				   int *addrc, int *sizec)
+{
+	if (addrc)
+		*addrc = 3;
+	if (sizec)
+		*sizec = 2;
+}
+
+static int of_bus_pci_map(u32 *addr, const u32 *range,
+			  int na, int ns, int pna)
+{
+	u32 result[OF_MAX_ADDR_CELLS];
+	int i;
+
+	/* Check address type match */
+	if ((addr[0] ^ range[0]) & 0x03000000)
+		return -EINVAL;
+
+	if (of_out_of_range(addr + 1, range + 1, range + na + pna,
+			    na - 1, ns))
+		return -EINVAL;
+
+	/* Start with the parent range base.  */
+	memcpy(result, range + na, pna * 4);
+
+	/* Add in the child address offset, skipping high cell.  */
+	for (i = 0; i < na - 1; i++)
+		result[pna - 1 - i] +=
+			(addr[na - 1 - i] -
+			 range[na - 1 - i]);
+
+	memcpy(addr, result, pna * 4);
+
+	return 0;
+}
+
+static unsigned long of_bus_pci_get_flags(const u32 *addr, unsigned long flags)
+{
+	u32 w = addr[0];
+
+	/* For PCI, we override whatever child busses may have used.  */
+	flags = 0;
+	switch((w >> 24) & 0x03) {
+	case 0x01:
+		flags |= IORESOURCE_IO;
+		break;
+
+	case 0x02: /* 32 bits */
+	case 0x03: /* 64 bits */
+		flags |= IORESOURCE_MEM;
+		break;
+	}
+	if (w & 0x40000000)
+		flags |= IORESOURCE_PREFETCH;
+	return flags;
+}
+
+/*
+ * SBUS bus specific translator
+ */
+
+static int of_bus_sbus_match(struct device_node *np)
+{
+	return !strcmp(np->name, "sbus") ||
+		!strcmp(np->name, "sbi");
+}
+
+static void of_bus_sbus_count_cells(struct device_node *child,
+				   int *addrc, int *sizec)
+{
+	if (addrc)
+		*addrc = 2;
+	if (sizec)
+		*sizec = 1;
+}
+
+/*
+ * FHC/Central bus specific translator.
+ *
+ * This is just needed to hard-code the address and size cell
+ * counts.  'fhc' and 'central' nodes lack the #address-cells and
+ * #size-cells properties, and if you walk to the root on such
+ * Enterprise boxes all you'll get is a #size-cells of 2 which is
+ * not what we want to use.
+ */
+static int of_bus_fhc_match(struct device_node *np)
+{
+	return !strcmp(np->name, "fhc") ||
+		!strcmp(np->name, "central");
+}
+
+#define of_bus_fhc_count_cells of_bus_sbus_count_cells
+
+/*
+ * Array of bus specific translators
+ */
+
+static struct of_bus of_busses[] = {
+	/* PCI */
+	{
+		.name = "pci",
+		.addr_prop_name = "assigned-addresses",
+		.match = of_bus_pci_match,
+		.count_cells = of_bus_pci_count_cells,
+		.map = of_bus_pci_map,
+		.get_flags = of_bus_pci_get_flags,
+	},
+	/* SIMBA */
+	{
+		.name = "simba",
+		.addr_prop_name = "assigned-addresses",
+		.match = of_bus_simba_match,
+		.count_cells = of_bus_pci_count_cells,
+		.map = of_bus_simba_map,
+		.get_flags = of_bus_pci_get_flags,
+	},
+	/* SBUS */
+	{
+		.name = "sbus",
+		.addr_prop_name = "reg",
+		.match = of_bus_sbus_match,
+		.count_cells = of_bus_sbus_count_cells,
+		.map = of_bus_default_map,
+		.get_flags = of_bus_default_get_flags,
+	},
+	/* FHC */
+	{
+		.name = "fhc",
+		.addr_prop_name = "reg",
+		.match = of_bus_fhc_match,
+		.count_cells = of_bus_fhc_count_cells,
+		.map = of_bus_default_map,
+		.get_flags = of_bus_default_get_flags,
+	},
+	/* Default */
+	{
+		.name = "default",
+		.addr_prop_name = "reg",
+		.match = NULL,
+		.count_cells = of_bus_default_count_cells,
+		.map = of_bus_default_map,
+		.get_flags = of_bus_default_get_flags,
+	},
+};
+
+static struct of_bus *of_match_bus(struct device_node *np)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(of_busses); i ++)
+		if (!of_busses[i].match || of_busses[i].match(np))
+			return &of_busses[i];
+	BUG();
+	return NULL;
+}
+
+static int __init build_one_resource(struct device_node *parent,
+				     struct of_bus *bus,
+				     struct of_bus *pbus,
+				     u32 *addr,
+				     int na, int ns, int pna)
+{
+	const u32 *ranges;
+	int rone, rlen;
+
+	ranges = of_get_property(parent, "ranges", &rlen);
+	if (ranges == NULL || rlen == 0) {
+		u32 result[OF_MAX_ADDR_CELLS];
+		int i;
+
+		memset(result, 0, pna * 4);
+		for (i = 0; i < na; i++)
+			result[pna - 1 - i] =
+				addr[na - 1 - i];
+
+		memcpy(addr, result, pna * 4);
+		return 0;
+	}
+
+	/* Now walk through the ranges */
+	rlen /= 4;
+	rone = na + pna + ns;
+	for (; rlen >= rone; rlen -= rone, ranges += rone) {
+		if (!bus->map(addr, ranges, na, ns, pna))
+			return 0;
+	}
+
+	/* When we miss an I/O space match on PCI, just pass it up
+	 * to the next PCI bridge and/or controller.
+	 */
+	if (!strcmp(bus->name, "pci") &&
+	    (addr[0] & 0x03000000) == 0x01000000)
+		return 0;
+
+	return 1;
+}
+
+static int __init use_1to1_mapping(struct device_node *pp)
+{
+	/* If we have a ranges property in the parent, use it.  */
+	if (of_find_property(pp, "ranges", NULL) != NULL)
+		return 0;
+
+	/* If the parent is the dma node of an ISA bus, pass
+	 * the translation up to the root.
+	 *
+	 * Some SBUS devices use intermediate nodes to express
+	 * hierarchy within the device itself.  These aren't
+	 * real bus nodes, and don't have a 'ranges' property.
+	 * But, we should still pass the translation work up
+	 * to the SBUS itself.
+	 */
+	if (!strcmp(pp->name, "dma") ||
+	    !strcmp(pp->name, "espdma") ||
+	    !strcmp(pp->name, "ledma") ||
+	    !strcmp(pp->name, "lebuffer"))
+		return 0;
+
+	/* Similarly for all PCI bridges, if we get this far
+	 * it lacks a ranges property, and this will include
+	 * cases like Simba.
+	 */
+	if (!strcmp(pp->name, "pci"))
+		return 0;
+
+	return 1;
+}
+
+static int of_resource_verbose;
+
+static void __init build_device_resources(struct of_device *op,
+					  struct device *parent)
+{
+	struct of_device *p_op;
+	struct of_bus *bus;
+	int na, ns;
+	int index, num_reg;
+	const void *preg;
+
+	if (!parent)
+		return;
+
+	p_op = to_of_device(parent);
+	bus = of_match_bus(p_op->node);
+	bus->count_cells(op->node, &na, &ns);
+
+	preg = of_get_property(op->node, bus->addr_prop_name, &num_reg);
+	if (!preg || num_reg == 0)
+		return;
+
+	/* Convert to num-cells.  */
+	num_reg /= 4;
+
+	/* Convert to num-entries.  */
+	num_reg /= na + ns;
+
+	/* Prevent overrunning the op->resources[] array.  */
+	if (num_reg > PROMREG_MAX) {
+		printk(KERN_WARNING "%s: Too many regs (%d), "
+		       "limiting to %d.\n",
+		       op->node->full_name, num_reg, PROMREG_MAX);
+		num_reg = PROMREG_MAX;
+	}
+
+	for (index = 0; index < num_reg; index++) {
+		struct resource *r = &op->resource[index];
+		u32 addr[OF_MAX_ADDR_CELLS];
+		const u32 *reg = (preg + (index * ((na + ns) * 4)));
+		struct device_node *dp = op->node;
+		struct device_node *pp = p_op->node;
+		struct of_bus *pbus, *dbus;
+		u64 size, result = OF_BAD_ADDR;
+		unsigned long flags;
+		int dna, dns;
+		int pna, pns;
+
+		size = of_read_addr(reg + na, ns);
+		memcpy(addr, reg, na * 4);
+
+		flags = bus->get_flags(addr, 0);
+
+		if (use_1to1_mapping(pp)) {
+			result = of_read_addr(addr, na);
+			goto build_res;
+		}
+
+		dna = na;
+		dns = ns;
+		dbus = bus;
+
+		while (1) {
+			dp = pp;
+			pp = dp->parent;
+			if (!pp) {
+				result = of_read_addr(addr, dna);
+				break;
+			}
+
+			pbus = of_match_bus(pp);
+			pbus->count_cells(dp, &pna, &pns);
+
+			if (build_one_resource(dp, dbus, pbus, addr,
+					       dna, dns, pna))
+				break;
+
+			flags = pbus->get_flags(addr, flags);
+
+			dna = pna;
+			dns = pns;
+			dbus = pbus;
+		}
+
+	build_res:
+		memset(r, 0, sizeof(*r));
+
+		if (of_resource_verbose)
+			printk("%s reg[%d] -> %lx\n",
+			       op->node->full_name, index,
+			       result);
+
+		if (result != OF_BAD_ADDR) {
+			if (tlb_type == hypervisor)
+				result &= 0x0fffffffffffffffUL;
+
+			r->start = result;
+			r->end = result + size - 1;
+			r->flags = flags;
+		}
+		r->name = op->node->name;
+	}
+}
+
+static struct device_node * __init
+apply_interrupt_map(struct device_node *dp, struct device_node *pp,
+		    const u32 *imap, int imlen, const u32 *imask,
+		    unsigned int *irq_p)
+{
+	struct device_node *cp;
+	unsigned int irq = *irq_p;
+	struct of_bus *bus;
+	phandle handle;
+	const u32 *reg;
+	int na, num_reg, i;
+
+	bus = of_match_bus(pp);
+	bus->count_cells(dp, &na, NULL);
+
+	reg = of_get_property(dp, "reg", &num_reg);
+	if (!reg || !num_reg)
+		return NULL;
+
+	imlen /= ((na + 3) * 4);
+	handle = 0;
+	for (i = 0; i < imlen; i++) {
+		int j;
+
+		for (j = 0; j < na; j++) {
+			if ((reg[j] & imask[j]) != imap[j])
+				goto next;
+		}
+		if (imap[na] == irq) {
+			handle = imap[na + 1];
+			irq = imap[na + 2];
+			break;
+		}
+
+	next:
+		imap += (na + 3);
+	}
+	if (i == imlen) {
+		/* Psycho and Sabre PCI controllers can have 'interrupt-map'
+		 * properties that do not include the on-board device
+		 * interrupts.  Instead, the device's 'interrupts' property
+		 * is already a fully specified INO value.
+		 *
+		 * Handle this by deciding that, if we didn't get a
+		 * match in the parent's 'interrupt-map', and the
+		 * parent is an IRQ translater, then use the parent as
+		 * our IRQ controller.
+		 */
+		if (pp->irq_trans)
+			return pp;
+
+		return NULL;
+	}
+
+	*irq_p = irq;
+	cp = of_find_node_by_phandle(handle);
+
+	return cp;
+}
+
+static unsigned int __init pci_irq_swizzle(struct device_node *dp,
+					   struct device_node *pp,
+					   unsigned int irq)
+{
+	const struct linux_prom_pci_registers *regs;
+	unsigned int bus, devfn, slot, ret;
+
+	if (irq < 1 || irq > 4)
+		return irq;
+
+	regs = of_get_property(dp, "reg", NULL);
+	if (!regs)
+		return irq;
+
+	bus = (regs->phys_hi >> 16) & 0xff;
+	devfn = (regs->phys_hi >> 8) & 0xff;
+	slot = (devfn >> 3) & 0x1f;
+
+	if (pp->irq_trans) {
+		/* Derived from Table 8-3, U2P User's Manual.  This branch
+		 * is handling a PCI controller that lacks a proper set of
+		 * interrupt-map and interrupt-map-mask properties.  The
+		 * Ultra-E450 is one example.
+		 *
+		 * The bit layout is BSSLL, where:
+		 * B: 0 on bus A, 1 on bus B
+		 * D: 2-bit slot number, derived from PCI device number as
+		 *    (dev - 1) for bus A, or (dev - 2) for bus B
+		 * L: 2-bit line number
+		 */
+		if (bus & 0x80) {
+			/* PBM-A */
+			bus  = 0x00;
+			slot = (slot - 1) << 2;
+		} else {
+			/* PBM-B */
+			bus  = 0x10;
+			slot = (slot - 2) << 2;
+		}
+		irq -= 1;
+
+		ret = (bus | slot | irq);
+	} else {
+		/* Going through a PCI-PCI bridge that lacks a set of
+		 * interrupt-map and interrupt-map-mask properties.
+		 */
+		ret = ((irq - 1 + (slot & 3)) & 3) + 1;
+	}
+
+	return ret;
+}
+
+static int of_irq_verbose;
+
+static unsigned int __init build_one_device_irq(struct of_device *op,
+						struct device *parent,
+						unsigned int irq)
+{
+	struct device_node *dp = op->node;
+	struct device_node *pp, *ip;
+	unsigned int orig_irq = irq;
+	int nid;
+
+	if (irq == 0xffffffff)
+		return irq;
+
+	if (dp->irq_trans) {
+		irq = dp->irq_trans->irq_build(dp, irq,
+					       dp->irq_trans->data);
+
+		if (of_irq_verbose)
+			printk("%s: direct translate %x --> %x\n",
+			       dp->full_name, orig_irq, irq);
+
+		goto out;
+	}
+
+	/* Something more complicated.  Walk up to the root, applying
+	 * interrupt-map or bus specific translations, until we hit
+	 * an IRQ translator.
+	 *
+	 * If we hit a bus type or situation we cannot handle, we
+	 * stop and assume that the original IRQ number was in a
+	 * format which has special meaning to it's immediate parent.
+	 */
+	pp = dp->parent;
+	ip = NULL;
+	while (pp) {
+		const void *imap, *imsk;
+		int imlen;
+
+		imap = of_get_property(pp, "interrupt-map", &imlen);
+		imsk = of_get_property(pp, "interrupt-map-mask", NULL);
+		if (imap && imsk) {
+			struct device_node *iret;
+			int this_orig_irq = irq;
+
+			iret = apply_interrupt_map(dp, pp,
+						   imap, imlen, imsk,
+						   &irq);
+
+			if (of_irq_verbose)
+				printk("%s: Apply [%s:%x] imap --> [%s:%x]\n",
+				       op->node->full_name,
+				       pp->full_name, this_orig_irq,
+				       (iret ? iret->full_name : "NULL"), irq);
+
+			if (!iret)
+				break;
+
+			if (iret->irq_trans) {
+				ip = iret;
+				break;
+			}
+		} else {
+			if (!strcmp(pp->name, "pci")) {
+				unsigned int this_orig_irq = irq;
+
+				irq = pci_irq_swizzle(dp, pp, irq);
+				if (of_irq_verbose)
+					printk("%s: PCI swizzle [%s] "
+					       "%x --> %x\n",
+					       op->node->full_name,
+					       pp->full_name, this_orig_irq,
+					       irq);
+
+			}
+
+			if (pp->irq_trans) {
+				ip = pp;
+				break;
+			}
+		}
+		dp = pp;
+		pp = pp->parent;
+	}
+	if (!ip)
+		return orig_irq;
+
+	irq = ip->irq_trans->irq_build(op->node, irq,
+				       ip->irq_trans->data);
+	if (of_irq_verbose)
+		printk("%s: Apply IRQ trans [%s] %x --> %x\n",
+		       op->node->full_name, ip->full_name, orig_irq, irq);
+
+out:
+	nid = of_node_to_nid(dp);
+	if (nid != -1) {
+		cpumask_t numa_mask = *cpumask_of_node(nid);
+
+		irq_set_affinity(irq, &numa_mask);
+	}
+
+	return irq;
+}
+
+static struct of_device * __init scan_one_device(struct device_node *dp,
+						 struct device *parent)
+{
+	struct of_device *op = kzalloc(sizeof(*op), GFP_KERNEL);
+	const unsigned int *irq;
+	struct dev_archdata *sd;
+	int len, i;
+
+	if (!op)
+		return NULL;
+
+	sd = &op->dev.archdata;
+	sd->prom_node = dp;
+	sd->op = op;
+
+	op->node = dp;
+
+	op->clock_freq = of_getintprop_default(dp, "clock-frequency",
+					       (25*1000*1000));
+	op->portid = of_getintprop_default(dp, "upa-portid", -1);
+	if (op->portid == -1)
+		op->portid = of_getintprop_default(dp, "portid", -1);
+
+	irq = of_get_property(dp, "interrupts", &len);
+	if (irq) {
+		op->num_irqs = len / 4;
+
+		/* Prevent overrunning the op->irqs[] array.  */
+		if (op->num_irqs > PROMINTR_MAX) {
+			printk(KERN_WARNING "%s: Too many irqs (%d), "
+			       "limiting to %d.\n",
+			       dp->full_name, op->num_irqs, PROMINTR_MAX);
+			op->num_irqs = PROMINTR_MAX;
+		}
+		memcpy(op->irqs, irq, op->num_irqs * 4);
+	} else {
+		op->num_irqs = 0;
+	}
+
+	build_device_resources(op, parent);
+	for (i = 0; i < op->num_irqs; i++)
+		op->irqs[i] = build_one_device_irq(op, parent, op->irqs[i]);
+
+	op->dev.parent = parent;
+	op->dev.bus = &of_platform_bus_type;
+	if (!parent)
+		dev_set_name(&op->dev, "root");
+	else
+		dev_set_name(&op->dev, "%08x", dp->node);
+
+	if (of_device_register(op)) {
+		printk("%s: Could not register of device.\n",
+		       dp->full_name);
+		kfree(op);
+		op = NULL;
+	}
+
+	return op;
+}
+
+static void __init scan_tree(struct device_node *dp, struct device *parent)
+{
+	while (dp) {
+		struct of_device *op = scan_one_device(dp, parent);
+
+		if (op)
+			scan_tree(dp->child, &op->dev);
+
+		dp = dp->sibling;
+	}
+}
+
+static void __init scan_of_devices(void)
+{
+	struct device_node *root = of_find_node_by_path("/");
+	struct of_device *parent;
+
+	parent = scan_one_device(root, NULL);
+	if (!parent)
+		return;
+
+	scan_tree(root->child, &parent->dev);
+}
+
+static int __init of_bus_driver_init(void)
+{
+	int err;
+
+	err = of_bus_type_init(&of_platform_bus_type, "of");
+	if (!err)
+		scan_of_devices();
+
+	return err;
+}
+
+postcore_initcall(of_bus_driver_init);
+
+static int __init of_debug(char *str)
+{
+	int val = 0;
+
+	get_option(&str, &val);
+	if (val & 1)
+		of_resource_verbose = 1;
+	if (val & 2)
+		of_irq_verbose = 1;
+	return 1;
+}
+
+__setup("of_debug=", of_debug);
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
new file mode 100644
index 000000000000..bdb7c0a6d83d
--- /dev/null
+++ b/arch/sparc/kernel/pci.c
@@ -0,0 +1,1095 @@
+/* pci.c: UltraSparc PCI controller support.
+ *
+ * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1998, 1999 Eddie C. Dost   (ecd@skynet.be)
+ * Copyright (C) 1999 Jakub Jelinek   (jj@ultra.linux.cz)
+ *
+ * OF tree based PCI bus probing taken from the PowerPC port
+ * with minor modifications, see there for credits.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/sched.h>
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/msi.h>
+#include <linux/irq.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/prom.h>
+#include <asm/apb.h>
+
+#include "pci_impl.h"
+
+/* List of all PCI controllers found in the system. */
+struct pci_pbm_info *pci_pbm_root = NULL;
+
+/* Each PBM found gets a unique index. */
+int pci_num_pbms = 0;
+
+volatile int pci_poke_in_progress;
+volatile int pci_poke_cpu = -1;
+volatile int pci_poke_faulted;
+
+static DEFINE_SPINLOCK(pci_poke_lock);
+
+void pci_config_read8(u8 *addr, u8 *ret)
+{
+	unsigned long flags;
+	u8 byte;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "lduba [%1] %2, %0\n\t"
+			     "membar #Sync"
+			     : "=r" (byte)
+			     : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	if (!pci_poke_faulted)
+		*ret = byte;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_read16(u16 *addr, u16 *ret)
+{
+	unsigned long flags;
+	u16 word;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "lduha [%1] %2, %0\n\t"
+			     "membar #Sync"
+			     : "=r" (word)
+			     : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	if (!pci_poke_faulted)
+		*ret = word;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_read32(u32 *addr, u32 *ret)
+{
+	unsigned long flags;
+	u32 dword;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "lduwa [%1] %2, %0\n\t"
+			     "membar #Sync"
+			     : "=r" (dword)
+			     : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	if (!pci_poke_faulted)
+		*ret = dword;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_write8(u8 *addr, u8 val)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "stba %0, [%1] %2\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_write16(u16 *addr, u16 val)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "stha %0, [%1] %2\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+void pci_config_write32(u32 *addr, u32 val)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&pci_poke_lock, flags);
+	pci_poke_cpu = smp_processor_id();
+	pci_poke_in_progress = 1;
+	pci_poke_faulted = 0;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "stwa %0, [%1] %2\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+	pci_poke_in_progress = 0;
+	pci_poke_cpu = -1;
+	spin_unlock_irqrestore(&pci_poke_lock, flags);
+}
+
+static int ofpci_verbose;
+
+static int __init ofpci_debug(char *str)
+{
+	int val = 0;
+
+	get_option(&str, &val);
+	if (val)
+		ofpci_verbose = 1;
+	return 1;
+}
+
+__setup("ofpci_debug=", ofpci_debug);
+
+static unsigned long pci_parse_of_flags(u32 addr0)
+{
+	unsigned long flags = 0;
+
+	if (addr0 & 0x02000000) {
+		flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY;
+		flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64;
+		flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M;
+		if (addr0 & 0x40000000)
+			flags |= IORESOURCE_PREFETCH
+				 | PCI_BASE_ADDRESS_MEM_PREFETCH;
+	} else if (addr0 & 0x01000000)
+		flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
+	return flags;
+}
+
+/* The of_device layer has translated all of the assigned-address properties
+ * into physical address resources, we only have to figure out the register
+ * mapping.
+ */
+static void pci_parse_of_addrs(struct of_device *op,
+			       struct device_node *node,
+			       struct pci_dev *dev)
+{
+	struct resource *op_res;
+	const u32 *addrs;
+	int proplen;
+
+	addrs = of_get_property(node, "assigned-addresses", &proplen);
+	if (!addrs)
+		return;
+	if (ofpci_verbose)
+		printk("    parse addresses (%d bytes) @ %p\n",
+		       proplen, addrs);
+	op_res = &op->resource[0];
+	for (; proplen >= 20; proplen -= 20, addrs += 5, op_res++) {
+		struct resource *res;
+		unsigned long flags;
+		int i;
+
+		flags = pci_parse_of_flags(addrs[0]);
+		if (!flags)
+			continue;
+		i = addrs[0] & 0xff;
+		if (ofpci_verbose)
+			printk("  start: %lx, end: %lx, i: %x\n",
+			       op_res->start, op_res->end, i);
+
+		if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) {
+			res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2];
+		} else if (i == dev->rom_base_reg) {
+			res = &dev->resource[PCI_ROM_RESOURCE];
+			flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE;
+		} else {
+			printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i);
+			continue;
+		}
+		res->start = op_res->start;
+		res->end = op_res->end;
+		res->flags = flags;
+		res->name = pci_name(dev);
+	}
+}
+
+static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
+					 struct device_node *node,
+					 struct pci_bus *bus, int devfn)
+{
+	struct dev_archdata *sd;
+	struct of_device *op;
+	struct pci_dev *dev;
+	const char *type;
+	u32 class;
+
+	dev = alloc_pci_dev();
+	if (!dev)
+		return NULL;
+
+	sd = &dev->dev.archdata;
+	sd->iommu = pbm->iommu;
+	sd->stc = &pbm->stc;
+	sd->host_controller = pbm;
+	sd->prom_node = node;
+	sd->op = op = of_find_device_by_node(node);
+	sd->numa_node = pbm->numa_node;
+
+	sd = &op->dev.archdata;
+	sd->iommu = pbm->iommu;
+	sd->stc = &pbm->stc;
+	sd->numa_node = pbm->numa_node;
+
+	if (!strcmp(node->name, "ebus"))
+		of_propagate_archdata(op);
+
+	type = of_get_property(node, "device_type", NULL);
+	if (type == NULL)
+		type = "";
+
+	if (ofpci_verbose)
+		printk("    create device, devfn: %x, type: %s\n",
+		       devfn, type);
+
+	dev->bus = bus;
+	dev->sysdata = node;
+	dev->dev.parent = bus->bridge;
+	dev->dev.bus = &pci_bus_type;
+	dev->devfn = devfn;
+	dev->multifunction = 0;		/* maybe a lie? */
+
+	dev->vendor = of_getintprop_default(node, "vendor-id", 0xffff);
+	dev->device = of_getintprop_default(node, "device-id", 0xffff);
+	dev->subsystem_vendor =
+		of_getintprop_default(node, "subsystem-vendor-id", 0);
+	dev->subsystem_device =
+		of_getintprop_default(node, "subsystem-id", 0);
+
+	dev->cfg_size = pci_cfg_space_size(dev);
+
+	/* We can't actually use the firmware value, we have
+	 * to read what is in the register right now.  One
+	 * reason is that in the case of IDE interfaces the
+	 * firmware can sample the value before the the IDE
+	 * interface is programmed into native mode.
+	 */
+	pci_read_config_dword(dev, PCI_CLASS_REVISION, &class);
+	dev->class = class >> 8;
+	dev->revision = class & 0xff;
+
+	dev_set_name(&dev->dev, "%04x:%02x:%02x.%d", pci_domain_nr(bus),
+		dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
+
+	if (ofpci_verbose)
+		printk("    class: 0x%x device name: %s\n",
+		       dev->class, pci_name(dev));
+
+	/* I have seen IDE devices which will not respond to
+	 * the bmdma simplex check reads if bus mastering is
+	 * disabled.
+	 */
+	if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE)
+		pci_set_master(dev);
+
+	dev->current_state = 4;		/* unknown power state */
+	dev->error_state = pci_channel_io_normal;
+
+	if (!strcmp(node->name, "pci")) {
+		/* a PCI-PCI bridge */
+		dev->hdr_type = PCI_HEADER_TYPE_BRIDGE;
+		dev->rom_base_reg = PCI_ROM_ADDRESS1;
+	} else if (!strcmp(type, "cardbus")) {
+		dev->hdr_type = PCI_HEADER_TYPE_CARDBUS;
+	} else {
+		dev->hdr_type = PCI_HEADER_TYPE_NORMAL;
+		dev->rom_base_reg = PCI_ROM_ADDRESS;
+
+		dev->irq = sd->op->irqs[0];
+		if (dev->irq == 0xffffffff)
+			dev->irq = PCI_IRQ_NONE;
+	}
+
+	pci_parse_of_addrs(sd->op, node, dev);
+
+	if (ofpci_verbose)
+		printk("    adding to system ...\n");
+
+	pci_device_add(dev, bus);
+
+	return dev;
+}
+
+static void __devinit apb_calc_first_last(u8 map, u32 *first_p, u32 *last_p)
+{
+	u32 idx, first, last;
+
+	first = 8;
+	last = 0;
+	for (idx = 0; idx < 8; idx++) {
+		if ((map & (1 << idx)) != 0) {
+			if (first > idx)
+				first = idx;
+			if (last < idx)
+				last = idx;
+		}
+	}
+
+	*first_p = first;
+	*last_p = last;
+}
+
+static void pci_resource_adjust(struct resource *res,
+				struct resource *root)
+{
+	res->start += root->start;
+	res->end += root->start;
+}
+
+/* For PCI bus devices which lack a 'ranges' property we interrogate
+ * the config space values to set the resources, just like the generic
+ * Linux PCI probing code does.
+ */
+static void __devinit pci_cfg_fake_ranges(struct pci_dev *dev,
+					  struct pci_bus *bus,
+					  struct pci_pbm_info *pbm)
+{
+	struct resource *res;
+	u8 io_base_lo, io_limit_lo;
+	u16 mem_base_lo, mem_limit_lo;
+	unsigned long base, limit;
+
+	pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
+	pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
+	base = (io_base_lo & PCI_IO_RANGE_MASK) << 8;
+	limit = (io_limit_lo & PCI_IO_RANGE_MASK) << 8;
+
+	if ((io_base_lo & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) {
+		u16 io_base_hi, io_limit_hi;
+
+		pci_read_config_word(dev, PCI_IO_BASE_UPPER16, &io_base_hi);
+		pci_read_config_word(dev, PCI_IO_LIMIT_UPPER16, &io_limit_hi);
+		base |= (io_base_hi << 16);
+		limit |= (io_limit_hi << 16);
+	}
+
+	res = bus->resource[0];
+	if (base <= limit) {
+		res->flags = (io_base_lo & PCI_IO_RANGE_TYPE_MASK) | IORESOURCE_IO;
+		if (!res->start)
+			res->start = base;
+		if (!res->end)
+			res->end = limit + 0xfff;
+		pci_resource_adjust(res, &pbm->io_space);
+	}
+
+	pci_read_config_word(dev, PCI_MEMORY_BASE, &mem_base_lo);
+	pci_read_config_word(dev, PCI_MEMORY_LIMIT, &mem_limit_lo);
+	base = (mem_base_lo & PCI_MEMORY_RANGE_MASK) << 16;
+	limit = (mem_limit_lo & PCI_MEMORY_RANGE_MASK) << 16;
+
+	res = bus->resource[1];
+	if (base <= limit) {
+		res->flags = ((mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) |
+			      IORESOURCE_MEM);
+		res->start = base;
+		res->end = limit + 0xfffff;
+		pci_resource_adjust(res, &pbm->mem_space);
+	}
+
+	pci_read_config_word(dev, PCI_PREF_MEMORY_BASE, &mem_base_lo);
+	pci_read_config_word(dev, PCI_PREF_MEMORY_LIMIT, &mem_limit_lo);
+	base = (mem_base_lo & PCI_PREF_RANGE_MASK) << 16;
+	limit = (mem_limit_lo & PCI_PREF_RANGE_MASK) << 16;
+
+	if ((mem_base_lo & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
+		u32 mem_base_hi, mem_limit_hi;
+
+		pci_read_config_dword(dev, PCI_PREF_BASE_UPPER32, &mem_base_hi);
+		pci_read_config_dword(dev, PCI_PREF_LIMIT_UPPER32, &mem_limit_hi);
+
+		/*
+		 * Some bridges set the base > limit by default, and some
+		 * (broken) BIOSes do not initialize them.  If we find
+		 * this, just assume they are not being used.
+		 */
+		if (mem_base_hi <= mem_limit_hi) {
+			base |= ((long) mem_base_hi) << 32;
+			limit |= ((long) mem_limit_hi) << 32;
+		}
+	}
+
+	res = bus->resource[2];
+	if (base <= limit) {
+		res->flags = ((mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) |
+			      IORESOURCE_MEM | IORESOURCE_PREFETCH);
+		res->start = base;
+		res->end = limit + 0xfffff;
+		pci_resource_adjust(res, &pbm->mem_space);
+	}
+}
+
+/* Cook up fake bus resources for SUNW,simba PCI bridges which lack
+ * a proper 'ranges' property.
+ */
+static void __devinit apb_fake_ranges(struct pci_dev *dev,
+				      struct pci_bus *bus,
+				      struct pci_pbm_info *pbm)
+{
+	struct resource *res;
+	u32 first, last;
+	u8 map;
+
+	pci_read_config_byte(dev, APB_IO_ADDRESS_MAP, &map);
+	apb_calc_first_last(map, &first, &last);
+	res = bus->resource[0];
+	res->start = (first << 21);
+	res->end = (last << 21) + ((1 << 21) - 1);
+	res->flags = IORESOURCE_IO;
+	pci_resource_adjust(res, &pbm->io_space);
+
+	pci_read_config_byte(dev, APB_MEM_ADDRESS_MAP, &map);
+	apb_calc_first_last(map, &first, &last);
+	res = bus->resource[1];
+	res->start = (first << 21);
+	res->end = (last << 21) + ((1 << 21) - 1);
+	res->flags = IORESOURCE_MEM;
+	pci_resource_adjust(res, &pbm->mem_space);
+}
+
+static void __devinit pci_of_scan_bus(struct pci_pbm_info *pbm,
+				      struct device_node *node,
+				      struct pci_bus *bus);
+
+#define GET_64BIT(prop, i)	((((u64) (prop)[(i)]) << 32) | (prop)[(i)+1])
+
+static void __devinit of_scan_pci_bridge(struct pci_pbm_info *pbm,
+					 struct device_node *node,
+					 struct pci_dev *dev)
+{
+	struct pci_bus *bus;
+	const u32 *busrange, *ranges;
+	int len, i, simba;
+	struct resource *res;
+	unsigned int flags;
+	u64 size;
+
+	if (ofpci_verbose)
+		printk("of_scan_pci_bridge(%s)\n", node->full_name);
+
+	/* parse bus-range property */
+	busrange = of_get_property(node, "bus-range", &len);
+	if (busrange == NULL || len != 8) {
+		printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n",
+		       node->full_name);
+		return;
+	}
+	ranges = of_get_property(node, "ranges", &len);
+	simba = 0;
+	if (ranges == NULL) {
+		const char *model = of_get_property(node, "model", NULL);
+		if (model && !strcmp(model, "SUNW,simba"))
+			simba = 1;
+	}
+
+	bus = pci_add_new_bus(dev->bus, dev, busrange[0]);
+	if (!bus) {
+		printk(KERN_ERR "Failed to create pci bus for %s\n",
+		       node->full_name);
+		return;
+	}
+
+	bus->primary = dev->bus->number;
+	bus->subordinate = busrange[1];
+	bus->bridge_ctl = 0;
+
+	/* parse ranges property, or cook one up by hand for Simba */
+	/* PCI #address-cells == 3 and #size-cells == 2 always */
+	res = &dev->resource[PCI_BRIDGE_RESOURCES];
+	for (i = 0; i < PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES; ++i) {
+		res->flags = 0;
+		bus->resource[i] = res;
+		++res;
+	}
+	if (simba) {
+		apb_fake_ranges(dev, bus, pbm);
+		goto after_ranges;
+	} else if (ranges == NULL) {
+		pci_cfg_fake_ranges(dev, bus, pbm);
+		goto after_ranges;
+	}
+	i = 1;
+	for (; len >= 32; len -= 32, ranges += 8) {
+		struct resource *root;
+
+		flags = pci_parse_of_flags(ranges[0]);
+		size = GET_64BIT(ranges, 6);
+		if (flags == 0 || size == 0)
+			continue;
+		if (flags & IORESOURCE_IO) {
+			res = bus->resource[0];
+			if (res->flags) {
+				printk(KERN_ERR "PCI: ignoring extra I/O range"
+				       " for bridge %s\n", node->full_name);
+				continue;
+			}
+			root = &pbm->io_space;
+		} else {
+			if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) {
+				printk(KERN_ERR "PCI: too many memory ranges"
+				       " for bridge %s\n", node->full_name);
+				continue;
+			}
+			res = bus->resource[i];
+			++i;
+			root = &pbm->mem_space;
+		}
+
+		res->start = GET_64BIT(ranges, 1);
+		res->end = res->start + size - 1;
+		res->flags = flags;
+
+		/* Another way to implement this would be to add an of_device
+		 * layer routine that can calculate a resource for a given
+		 * range property value in a PCI device.
+		 */
+		pci_resource_adjust(res, root);
+	}
+after_ranges:
+	sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
+		bus->number);
+	if (ofpci_verbose)
+		printk("    bus name: %s\n", bus->name);
+
+	pci_of_scan_bus(pbm, node, bus);
+}
+
+static void __devinit pci_of_scan_bus(struct pci_pbm_info *pbm,
+				      struct device_node *node,
+				      struct pci_bus *bus)
+{
+	struct device_node *child;
+	const u32 *reg;
+	int reglen, devfn, prev_devfn;
+	struct pci_dev *dev;
+
+	if (ofpci_verbose)
+		printk("PCI: scan_bus[%s] bus no %d\n",
+		       node->full_name, bus->number);
+
+	child = NULL;
+	prev_devfn = -1;
+	while ((child = of_get_next_child(node, child)) != NULL) {
+		if (ofpci_verbose)
+			printk("  * %s\n", child->full_name);
+		reg = of_get_property(child, "reg", &reglen);
+		if (reg == NULL || reglen < 20)
+			continue;
+
+		devfn = (reg[0] >> 8) & 0xff;
+
+		/* This is a workaround for some device trees
+		 * which list PCI devices twice.  On the V100
+		 * for example, device number 3 is listed twice.
+		 * Once as "pm" and once again as "lomp".
+		 */
+		if (devfn == prev_devfn)
+			continue;
+		prev_devfn = devfn;
+
+		/* create a new pci_dev for this device */
+		dev = of_create_pci_dev(pbm, child, bus, devfn);
+		if (!dev)
+			continue;
+		if (ofpci_verbose)
+			printk("PCI: dev header type: %x\n",
+			       dev->hdr_type);
+
+		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
+		    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+			of_scan_pci_bridge(pbm, child, dev);
+	}
+}
+
+static ssize_t
+show_pciobppath_attr(struct device * dev, struct device_attribute * attr, char * buf)
+{
+	struct pci_dev *pdev;
+	struct device_node *dp;
+
+	pdev = to_pci_dev(dev);
+	dp = pdev->dev.archdata.prom_node;
+
+	return snprintf (buf, PAGE_SIZE, "%s\n", dp->full_name);
+}
+
+static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH, show_pciobppath_attr, NULL);
+
+static void __devinit pci_bus_register_of_sysfs(struct pci_bus *bus)
+{
+	struct pci_dev *dev;
+	struct pci_bus *child_bus;
+	int err;
+
+	list_for_each_entry(dev, &bus->devices, bus_list) {
+		/* we don't really care if we can create this file or
+		 * not, but we need to assign the result of the call
+		 * or the world will fall under alien invasion and
+		 * everybody will be frozen on a spaceship ready to be
+		 * eaten on alpha centauri by some green and jelly
+		 * humanoid.
+		 */
+		err = sysfs_create_file(&dev->dev.kobj, &dev_attr_obppath.attr);
+	}
+	list_for_each_entry(child_bus, &bus->children, node)
+		pci_bus_register_of_sysfs(child_bus);
+}
+
+struct pci_bus * __devinit pci_scan_one_pbm(struct pci_pbm_info *pbm,
+					    struct device *parent)
+{
+	struct device_node *node = pbm->op->node;
+	struct pci_bus *bus;
+
+	printk("PCI: Scanning PBM %s\n", node->full_name);
+
+	bus = pci_create_bus(parent, pbm->pci_first_busno, pbm->pci_ops, pbm);
+	if (!bus) {
+		printk(KERN_ERR "Failed to create bus for %s\n",
+		       node->full_name);
+		return NULL;
+	}
+	bus->secondary = pbm->pci_first_busno;
+	bus->subordinate = pbm->pci_last_busno;
+
+	bus->resource[0] = &pbm->io_space;
+	bus->resource[1] = &pbm->mem_space;
+
+	pci_of_scan_bus(pbm, node, bus);
+	pci_bus_add_devices(bus);
+	pci_bus_register_of_sysfs(bus);
+
+	return bus;
+}
+
+void __devinit pcibios_fixup_bus(struct pci_bus *pbus)
+{
+	struct pci_pbm_info *pbm = pbus->sysdata;
+
+	/* Generic PCI bus probing sets these to point at
+	 * &io{port,mem}_resouce which is wrong for us.
+	 */
+	pbus->resource[0] = &pbm->io_space;
+	pbus->resource[1] = &pbm->mem_space;
+}
+
+struct resource *pcibios_select_root(struct pci_dev *pdev, struct resource *r)
+{
+	struct pci_pbm_info *pbm = pdev->bus->sysdata;
+	struct resource *root = NULL;
+
+	if (r->flags & IORESOURCE_IO)
+		root = &pbm->io_space;
+	if (r->flags & IORESOURCE_MEM)
+		root = &pbm->mem_space;
+
+	return root;
+}
+
+void pcibios_update_irq(struct pci_dev *pdev, int irq)
+{
+}
+
+void pcibios_align_resource(void *data, struct resource *res,
+			    resource_size_t size, resource_size_t align)
+{
+}
+
+int pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+	u16 cmd, oldcmd;
+	int i;
+
+	pci_read_config_word(dev, PCI_COMMAND, &cmd);
+	oldcmd = cmd;
+
+	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+		struct resource *res = &dev->resource[i];
+
+		/* Only set up the requested stuff */
+		if (!(mask & (1<<i)))
+			continue;
+
+		if (res->flags & IORESOURCE_IO)
+			cmd |= PCI_COMMAND_IO;
+		if (res->flags & IORESOURCE_MEM)
+			cmd |= PCI_COMMAND_MEMORY;
+	}
+
+	if (cmd != oldcmd) {
+		printk(KERN_DEBUG "PCI: Enabling device: (%s), cmd %x\n",
+		       pci_name(dev), cmd);
+                /* Enable the appropriate bits in the PCI command register.  */
+		pci_write_config_word(dev, PCI_COMMAND, cmd);
+	}
+	return 0;
+}
+
+void pcibios_resource_to_bus(struct pci_dev *pdev, struct pci_bus_region *region,
+			     struct resource *res)
+{
+	struct pci_pbm_info *pbm = pdev->bus->sysdata;
+	struct resource zero_res, *root;
+
+	zero_res.start = 0;
+	zero_res.end = 0;
+	zero_res.flags = res->flags;
+
+	if (res->flags & IORESOURCE_IO)
+		root = &pbm->io_space;
+	else
+		root = &pbm->mem_space;
+
+	pci_resource_adjust(&zero_res, root);
+
+	region->start = res->start - zero_res.start;
+	region->end = res->end - zero_res.start;
+}
+EXPORT_SYMBOL(pcibios_resource_to_bus);
+
+void pcibios_bus_to_resource(struct pci_dev *pdev, struct resource *res,
+			     struct pci_bus_region *region)
+{
+	struct pci_pbm_info *pbm = pdev->bus->sysdata;
+	struct resource *root;
+
+	res->start = region->start;
+	res->end = region->end;
+
+	if (res->flags & IORESOURCE_IO)
+		root = &pbm->io_space;
+	else
+		root = &pbm->mem_space;
+
+	pci_resource_adjust(res, root);
+}
+EXPORT_SYMBOL(pcibios_bus_to_resource);
+
+char * __devinit pcibios_setup(char *str)
+{
+	return str;
+}
+
+/* Platform support for /proc/bus/pci/X/Y mmap()s. */
+
+/* If the user uses a host-bridge as the PCI device, he may use
+ * this to perform a raw mmap() of the I/O or MEM space behind
+ * that controller.
+ *
+ * This can be useful for execution of x86 PCI bios initialization code
+ * on a PCI card, like the xfree86 int10 stuff does.
+ */
+static int __pci_mmap_make_offset_bus(struct pci_dev *pdev, struct vm_area_struct *vma,
+				      enum pci_mmap_state mmap_state)
+{
+	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
+	unsigned long space_size, user_offset, user_size;
+
+	if (mmap_state == pci_mmap_io) {
+		space_size = (pbm->io_space.end -
+			      pbm->io_space.start) + 1;
+	} else {
+		space_size = (pbm->mem_space.end -
+			      pbm->mem_space.start) + 1;
+	}
+
+	/* Make sure the request is in range. */
+	user_offset = vma->vm_pgoff << PAGE_SHIFT;
+	user_size = vma->vm_end - vma->vm_start;
+
+	if (user_offset >= space_size ||
+	    (user_offset + user_size) > space_size)
+		return -EINVAL;
+
+	if (mmap_state == pci_mmap_io) {
+		vma->vm_pgoff = (pbm->io_space.start +
+				 user_offset) >> PAGE_SHIFT;
+	} else {
+		vma->vm_pgoff = (pbm->mem_space.start +
+				 user_offset) >> PAGE_SHIFT;
+	}
+
+	return 0;
+}
+
+/* Adjust vm_pgoff of VMA such that it is the physical page offset
+ * corresponding to the 32-bit pci bus offset for DEV requested by the user.
+ *
+ * Basically, the user finds the base address for his device which he wishes
+ * to mmap.  They read the 32-bit value from the config space base register,
+ * add whatever PAGE_SIZE multiple offset they wish, and feed this into the
+ * offset parameter of mmap on /proc/bus/pci/XXX for that device.
+ *
+ * Returns negative error code on failure, zero on success.
+ */
+static int __pci_mmap_make_offset(struct pci_dev *pdev,
+				  struct vm_area_struct *vma,
+				  enum pci_mmap_state mmap_state)
+{
+	unsigned long user_paddr, user_size;
+	int i, err;
+
+	/* First compute the physical address in vma->vm_pgoff,
+	 * making sure the user offset is within range in the
+	 * appropriate PCI space.
+	 */
+	err = __pci_mmap_make_offset_bus(pdev, vma, mmap_state);
+	if (err)
+		return err;
+
+	/* If this is a mapping on a host bridge, any address
+	 * is OK.
+	 */
+	if ((pdev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
+		return err;
+
+	/* Otherwise make sure it's in the range for one of the
+	 * device's resources.
+	 */
+	user_paddr = vma->vm_pgoff << PAGE_SHIFT;
+	user_size = vma->vm_end - vma->vm_start;
+
+	for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
+		struct resource *rp = &pdev->resource[i];
+		resource_size_t aligned_end;
+
+		/* Active? */
+		if (!rp->flags)
+			continue;
+
+		/* Same type? */
+		if (i == PCI_ROM_RESOURCE) {
+			if (mmap_state != pci_mmap_mem)
+				continue;
+		} else {
+			if ((mmap_state == pci_mmap_io &&
+			     (rp->flags & IORESOURCE_IO) == 0) ||
+			    (mmap_state == pci_mmap_mem &&
+			     (rp->flags & IORESOURCE_MEM) == 0))
+				continue;
+		}
+
+		/* Align the resource end to the next page address.
+		 * PAGE_SIZE intentionally added instead of (PAGE_SIZE - 1),
+		 * because actually we need the address of the next byte
+		 * after rp->end.
+		 */
+		aligned_end = (rp->end + PAGE_SIZE) & PAGE_MASK;
+
+		if ((rp->start <= user_paddr) &&
+		    (user_paddr + user_size) <= aligned_end)
+			break;
+	}
+
+	if (i > PCI_ROM_RESOURCE)
+		return -EINVAL;
+
+	return 0;
+}
+
+/* Set vm_flags of VMA, as appropriate for this architecture, for a pci device
+ * mapping.
+ */
+static void __pci_mmap_set_flags(struct pci_dev *dev, struct vm_area_struct *vma,
+					    enum pci_mmap_state mmap_state)
+{
+	vma->vm_flags |= (VM_IO | VM_RESERVED);
+}
+
+/* Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
+ * device mapping.
+ */
+static void __pci_mmap_set_pgprot(struct pci_dev *dev, struct vm_area_struct *vma,
+					     enum pci_mmap_state mmap_state)
+{
+	/* Our io_remap_pfn_range takes care of this, do nothing.  */
+}
+
+/* Perform the actual remap of the pages for a PCI device mapping, as appropriate
+ * for this architecture.  The region in the process to map is described by vm_start
+ * and vm_end members of VMA, the base physical address is found in vm_pgoff.
+ * The pci device structure is provided so that architectures may make mapping
+ * decisions on a per-device or per-bus basis.
+ *
+ * Returns a negative error code on failure, zero on success.
+ */
+int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+			enum pci_mmap_state mmap_state,
+			int write_combine)
+{
+	int ret;
+
+	ret = __pci_mmap_make_offset(dev, vma, mmap_state);
+	if (ret < 0)
+		return ret;
+
+	__pci_mmap_set_flags(dev, vma, mmap_state);
+	__pci_mmap_set_pgprot(dev, vma, mmap_state);
+
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+	ret = io_remap_pfn_range(vma, vma->vm_start,
+				 vma->vm_pgoff,
+				 vma->vm_end - vma->vm_start,
+				 vma->vm_page_prot);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+#ifdef CONFIG_NUMA
+int pcibus_to_node(struct pci_bus *pbus)
+{
+	struct pci_pbm_info *pbm = pbus->sysdata;
+
+	return pbm->numa_node;
+}
+EXPORT_SYMBOL(pcibus_to_node);
+#endif
+
+/* Return the domain number for this pci bus */
+
+int pci_domain_nr(struct pci_bus *pbus)
+{
+	struct pci_pbm_info *pbm = pbus->sysdata;
+	int ret;
+
+	if (!pbm) {
+		ret = -ENXIO;
+	} else {
+		ret = pbm->index;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(pci_domain_nr);
+
+#ifdef CONFIG_PCI_MSI
+int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
+{
+	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
+	unsigned int virt_irq;
+
+	if (!pbm->setup_msi_irq)
+		return -EINVAL;
+
+	return pbm->setup_msi_irq(&virt_irq, pdev, desc);
+}
+
+void arch_teardown_msi_irq(unsigned int virt_irq)
+{
+	struct msi_desc *entry = get_irq_msi(virt_irq);
+	struct pci_dev *pdev = entry->dev;
+	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
+
+	if (pbm->teardown_msi_irq)
+		pbm->teardown_msi_irq(virt_irq, pdev);
+}
+#endif /* !(CONFIG_PCI_MSI) */
+
+struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
+{
+	return pdev->dev.archdata.prom_node;
+}
+EXPORT_SYMBOL(pci_device_to_OF_node);
+
+static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit)
+{
+	struct pci_dev *ali_isa_bridge;
+	u8 val;
+
+	/* ALI sound chips generate 31-bits of DMA, a special register
+	 * determines what bit 31 is emitted as.
+	 */
+	ali_isa_bridge = pci_get_device(PCI_VENDOR_ID_AL,
+					 PCI_DEVICE_ID_AL_M1533,
+					 NULL);
+
+	pci_read_config_byte(ali_isa_bridge, 0x7e, &val);
+	if (set_bit)
+		val |= 0x01;
+	else
+		val &= ~0x01;
+	pci_write_config_byte(ali_isa_bridge, 0x7e, val);
+	pci_dev_put(ali_isa_bridge);
+}
+
+int pci_dma_supported(struct pci_dev *pdev, u64 device_mask)
+{
+	u64 dma_addr_mask;
+
+	if (pdev == NULL) {
+		dma_addr_mask = 0xffffffff;
+	} else {
+		struct iommu *iommu = pdev->dev.archdata.iommu;
+
+		dma_addr_mask = iommu->dma_addr_mask;
+
+		if (pdev->vendor == PCI_VENDOR_ID_AL &&
+		    pdev->device == PCI_DEVICE_ID_AL_M5451 &&
+		    device_mask == 0x7fffffff) {
+			ali_sound_dma_hack(pdev,
+					   (dma_addr_mask & 0x80000000) != 0);
+			return 1;
+		}
+	}
+
+	if (device_mask >= (1UL << 32UL))
+		return 0;
+
+	return (device_mask & dma_addr_mask) == dma_addr_mask;
+}
+
+void pci_resource_to_user(const struct pci_dev *pdev, int bar,
+			  const struct resource *rp, resource_size_t *start,
+			  resource_size_t *end)
+{
+	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
+	unsigned long offset;
+
+	if (rp->flags & IORESOURCE_IO)
+		offset = pbm->io_space.start;
+	else
+		offset = pbm->mem_space.start;
+
+	*start = rp->start - offset;
+	*end = rp->end - offset;
+}
diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c
new file mode 100644
index 000000000000..23b88082d0b2
--- /dev/null
+++ b/arch/sparc/kernel/pci_common.c
@@ -0,0 +1,545 @@
+/* pci_common.c: PCI controller common support.
+ *
+ * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/of_device.h>
+
+#include <asm/prom.h>
+#include <asm/oplib.h>
+
+#include "pci_impl.h"
+#include "pci_sun4v.h"
+
+static int config_out_of_range(struct pci_pbm_info *pbm,
+			       unsigned long bus,
+			       unsigned long devfn,
+			       unsigned long reg)
+{
+	if (bus < pbm->pci_first_busno ||
+	    bus > pbm->pci_last_busno)
+		return 1;
+	return 0;
+}
+
+static void *sun4u_config_mkaddr(struct pci_pbm_info *pbm,
+				 unsigned long bus,
+				 unsigned long devfn,
+				 unsigned long reg)
+{
+	unsigned long rbits = pbm->config_space_reg_bits;
+
+	if (config_out_of_range(pbm, bus, devfn, reg))
+		return NULL;
+
+	reg = (reg & ((1 << rbits) - 1));
+	devfn <<= rbits;
+	bus <<= rbits + 8;
+
+	return (void *)	(pbm->config_space | bus | devfn | reg);
+}
+
+/* At least on Sabre, it is necessary to access all PCI host controller
+ * registers at their natural size, otherwise zeros are returned.
+ * Strange but true, and I see no language in the UltraSPARC-IIi
+ * programmer's manual that mentions this even indirectly.
+ */
+static int sun4u_read_pci_cfg_host(struct pci_pbm_info *pbm,
+				   unsigned char bus, unsigned int devfn,
+				   int where, int size, u32 *value)
+{
+	u32 tmp32, *addr;
+	u16 tmp16;
+	u8 tmp8;
+
+	addr = sun4u_config_mkaddr(pbm, bus, devfn, where);
+	if (!addr)
+		return PCIBIOS_SUCCESSFUL;
+
+	switch (size) {
+	case 1:
+		if (where < 8) {
+			unsigned long align = (unsigned long) addr;
+
+			align &= ~1;
+			pci_config_read16((u16 *)align, &tmp16);
+			if (where & 1)
+				*value = tmp16 >> 8;
+			else
+				*value = tmp16 & 0xff;
+		} else {
+			pci_config_read8((u8 *)addr, &tmp8);
+			*value = (u32) tmp8;
+		}
+		break;
+
+	case 2:
+		if (where < 8) {
+			pci_config_read16((u16 *)addr, &tmp16);
+			*value = (u32) tmp16;
+		} else {
+			pci_config_read8((u8 *)addr, &tmp8);
+			*value = (u32) tmp8;
+			pci_config_read8(((u8 *)addr) + 1, &tmp8);
+			*value |= ((u32) tmp8) << 8;
+		}
+		break;
+
+	case 4:
+		tmp32 = 0xffffffff;
+		sun4u_read_pci_cfg_host(pbm, bus, devfn,
+					where, 2, &tmp32);
+		*value = tmp32;
+
+		tmp32 = 0xffffffff;
+		sun4u_read_pci_cfg_host(pbm, bus, devfn,
+					where + 2, 2, &tmp32);
+		*value |= tmp32 << 16;
+		break;
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int sun4u_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
+			      int where, int size, u32 *value)
+{
+	struct pci_pbm_info *pbm = bus_dev->sysdata;
+	unsigned char bus = bus_dev->number;
+	u32 *addr;
+	u16 tmp16;
+	u8 tmp8;
+
+	switch (size) {
+	case 1:
+		*value = 0xff;
+		break;
+	case 2:
+		*value = 0xffff;
+		break;
+	case 4:
+		*value = 0xffffffff;
+		break;
+	}
+
+	if (!bus_dev->number && !PCI_SLOT(devfn))
+		return sun4u_read_pci_cfg_host(pbm, bus, devfn, where,
+					       size, value);
+
+	addr = sun4u_config_mkaddr(pbm, bus, devfn, where);
+	if (!addr)
+		return PCIBIOS_SUCCESSFUL;
+
+	switch (size) {
+	case 1:
+		pci_config_read8((u8 *)addr, &tmp8);
+		*value = (u32) tmp8;
+		break;
+
+	case 2:
+		if (where & 0x01) {
+			printk("pci_read_config_word: misaligned reg [%x]\n",
+			       where);
+			return PCIBIOS_SUCCESSFUL;
+		}
+		pci_config_read16((u16 *)addr, &tmp16);
+		*value = (u32) tmp16;
+		break;
+
+	case 4:
+		if (where & 0x03) {
+			printk("pci_read_config_dword: misaligned reg [%x]\n",
+			       where);
+			return PCIBIOS_SUCCESSFUL;
+		}
+		pci_config_read32(addr, value);
+		break;
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int sun4u_write_pci_cfg_host(struct pci_pbm_info *pbm,
+				    unsigned char bus, unsigned int devfn,
+				    int where, int size, u32 value)
+{
+	u32 *addr;
+
+	addr = sun4u_config_mkaddr(pbm, bus, devfn, where);
+	if (!addr)
+		return PCIBIOS_SUCCESSFUL;
+
+	switch (size) {
+	case 1:
+		if (where < 8) {
+			unsigned long align = (unsigned long) addr;
+			u16 tmp16;
+
+			align &= ~1;
+			pci_config_read16((u16 *)align, &tmp16);
+			if (where & 1) {
+				tmp16 &= 0x00ff;
+				tmp16 |= value << 8;
+			} else {
+				tmp16 &= 0xff00;
+				tmp16 |= value;
+			}
+			pci_config_write16((u16 *)align, tmp16);
+		} else
+			pci_config_write8((u8 *)addr, value);
+		break;
+	case 2:
+		if (where < 8) {
+			pci_config_write16((u16 *)addr, value);
+		} else {
+			pci_config_write8((u8 *)addr, value & 0xff);
+			pci_config_write8(((u8 *)addr) + 1, value >> 8);
+		}
+		break;
+	case 4:
+		sun4u_write_pci_cfg_host(pbm, bus, devfn,
+					 where, 2, value & 0xffff);
+		sun4u_write_pci_cfg_host(pbm, bus, devfn,
+					 where + 2, 2, value >> 16);
+		break;
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int sun4u_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
+			       int where, int size, u32 value)
+{
+	struct pci_pbm_info *pbm = bus_dev->sysdata;
+	unsigned char bus = bus_dev->number;
+	u32 *addr;
+
+	if (!bus_dev->number && !PCI_SLOT(devfn))
+		return sun4u_write_pci_cfg_host(pbm, bus, devfn, where,
+						size, value);
+
+	addr = sun4u_config_mkaddr(pbm, bus, devfn, where);
+	if (!addr)
+		return PCIBIOS_SUCCESSFUL;
+
+	switch (size) {
+	case 1:
+		pci_config_write8((u8 *)addr, value);
+		break;
+
+	case 2:
+		if (where & 0x01) {
+			printk("pci_write_config_word: misaligned reg [%x]\n",
+			       where);
+			return PCIBIOS_SUCCESSFUL;
+		}
+		pci_config_write16((u16 *)addr, value);
+		break;
+
+	case 4:
+		if (where & 0x03) {
+			printk("pci_write_config_dword: misaligned reg [%x]\n",
+			       where);
+			return PCIBIOS_SUCCESSFUL;
+		}
+		pci_config_write32(addr, value);
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops sun4u_pci_ops = {
+	.read =		sun4u_read_pci_cfg,
+	.write =	sun4u_write_pci_cfg,
+};
+
+static int sun4v_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
+			      int where, int size, u32 *value)
+{
+	struct pci_pbm_info *pbm = bus_dev->sysdata;
+	u32 devhandle = pbm->devhandle;
+	unsigned int bus = bus_dev->number;
+	unsigned int device = PCI_SLOT(devfn);
+	unsigned int func = PCI_FUNC(devfn);
+	unsigned long ret;
+
+	if (config_out_of_range(pbm, bus, devfn, where)) {
+		ret = ~0UL;
+	} else {
+		ret = pci_sun4v_config_get(devhandle,
+				HV_PCI_DEVICE_BUILD(bus, device, func),
+				where, size);
+	}
+	switch (size) {
+	case 1:
+		*value = ret & 0xff;
+		break;
+	case 2:
+		*value = ret & 0xffff;
+		break;
+	case 4:
+		*value = ret & 0xffffffff;
+		break;
+	};
+
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int sun4v_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
+			       int where, int size, u32 value)
+{
+	struct pci_pbm_info *pbm = bus_dev->sysdata;
+	u32 devhandle = pbm->devhandle;
+	unsigned int bus = bus_dev->number;
+	unsigned int device = PCI_SLOT(devfn);
+	unsigned int func = PCI_FUNC(devfn);
+	unsigned long ret;
+
+	if (config_out_of_range(pbm, bus, devfn, where)) {
+		/* Do nothing. */
+	} else {
+		ret = pci_sun4v_config_put(devhandle,
+				HV_PCI_DEVICE_BUILD(bus, device, func),
+				where, size, value);
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops sun4v_pci_ops = {
+	.read =		sun4v_read_pci_cfg,
+	.write =	sun4v_write_pci_cfg,
+};
+
+void pci_get_pbm_props(struct pci_pbm_info *pbm)
+{
+	const u32 *val = of_get_property(pbm->op->node, "bus-range", NULL);
+
+	pbm->pci_first_busno = val[0];
+	pbm->pci_last_busno = val[1];
+
+	val = of_get_property(pbm->op->node, "ino-bitmap", NULL);
+	if (val) {
+		pbm->ino_bitmap = (((u64)val[1] << 32UL) |
+				   ((u64)val[0] <<  0UL));
+	}
+}
+
+static void pci_register_legacy_regions(struct resource *io_res,
+					struct resource *mem_res)
+{
+	struct resource *p;
+
+	/* VGA Video RAM. */
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
+	if (!p)
+		return;
+
+	p->name = "Video RAM area";
+	p->start = mem_res->start + 0xa0000UL;
+	p->end = p->start + 0x1ffffUL;
+	p->flags = IORESOURCE_BUSY;
+	request_resource(mem_res, p);
+
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
+	if (!p)
+		return;
+
+	p->name = "System ROM";
+	p->start = mem_res->start + 0xf0000UL;
+	p->end = p->start + 0xffffUL;
+	p->flags = IORESOURCE_BUSY;
+	request_resource(mem_res, p);
+
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
+	if (!p)
+		return;
+
+	p->name = "Video ROM";
+	p->start = mem_res->start + 0xc0000UL;
+	p->end = p->start + 0x7fffUL;
+	p->flags = IORESOURCE_BUSY;
+	request_resource(mem_res, p);
+}
+
+static void pci_register_iommu_region(struct pci_pbm_info *pbm)
+{
+	const u32 *vdma = of_get_property(pbm->op->node, "virtual-dma", NULL);
+
+	if (vdma) {
+		struct resource *rp = kmalloc(sizeof(*rp), GFP_KERNEL);
+
+		if (!rp) {
+			prom_printf("Cannot allocate IOMMU resource.\n");
+			prom_halt();
+		}
+		rp->name = "IOMMU";
+		rp->start = pbm->mem_space.start + (unsigned long) vdma[0];
+		rp->end = rp->start + (unsigned long) vdma[1] - 1UL;
+		rp->flags = IORESOURCE_BUSY;
+		request_resource(&pbm->mem_space, rp);
+	}
+}
+
+void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
+{
+	const struct linux_prom_pci_ranges *pbm_ranges;
+	int i, saw_mem, saw_io;
+	int num_pbm_ranges;
+
+	saw_mem = saw_io = 0;
+	pbm_ranges = of_get_property(pbm->op->node, "ranges", &i);
+	if (!pbm_ranges) {
+		prom_printf("PCI: Fatal error, missing PBM ranges property "
+			    " for %s\n",
+			    pbm->name);
+		prom_halt();
+	}
+
+	num_pbm_ranges = i / sizeof(*pbm_ranges);
+
+	for (i = 0; i < num_pbm_ranges; i++) {
+		const struct linux_prom_pci_ranges *pr = &pbm_ranges[i];
+		unsigned long a, size;
+		u32 parent_phys_hi, parent_phys_lo;
+		u32 size_hi, size_lo;
+		int type;
+
+		parent_phys_hi = pr->parent_phys_hi;
+		parent_phys_lo = pr->parent_phys_lo;
+		if (tlb_type == hypervisor)
+			parent_phys_hi &= 0x0fffffff;
+
+		size_hi = pr->size_hi;
+		size_lo = pr->size_lo;
+
+		type = (pr->child_phys_hi >> 24) & 0x3;
+		a = (((unsigned long)parent_phys_hi << 32UL) |
+		     ((unsigned long)parent_phys_lo  <<  0UL));
+		size = (((unsigned long)size_hi << 32UL) |
+			((unsigned long)size_lo  <<  0UL));
+
+		switch (type) {
+		case 0:
+			/* PCI config space, 16MB */
+			pbm->config_space = a;
+			break;
+
+		case 1:
+			/* 16-bit IO space, 16MB */
+			pbm->io_space.start = a;
+			pbm->io_space.end = a + size - 1UL;
+			pbm->io_space.flags = IORESOURCE_IO;
+			saw_io = 1;
+			break;
+
+		case 2:
+			/* 32-bit MEM space, 2GB */
+			pbm->mem_space.start = a;
+			pbm->mem_space.end = a + size - 1UL;
+			pbm->mem_space.flags = IORESOURCE_MEM;
+			saw_mem = 1;
+			break;
+
+		case 3:
+			/* XXX 64-bit MEM handling XXX */
+
+		default:
+			break;
+		};
+	}
+
+	if (!saw_io || !saw_mem) {
+		prom_printf("%s: Fatal error, missing %s PBM range.\n",
+			    pbm->name,
+			    (!saw_io ? "IO" : "MEM"));
+		prom_halt();
+	}
+
+	printk("%s: PCI IO[%lx] MEM[%lx]\n",
+	       pbm->name,
+	       pbm->io_space.start,
+	       pbm->mem_space.start);
+
+	pbm->io_space.name = pbm->mem_space.name = pbm->name;
+
+	request_resource(&ioport_resource, &pbm->io_space);
+	request_resource(&iomem_resource, &pbm->mem_space);
+
+	pci_register_legacy_regions(&pbm->io_space,
+				    &pbm->mem_space);
+	pci_register_iommu_region(pbm);
+}
+
+/* Generic helper routines for PCI error reporting. */
+void pci_scan_for_target_abort(struct pci_pbm_info *pbm,
+			       struct pci_bus *pbus)
+{
+	struct pci_dev *pdev;
+	struct pci_bus *bus;
+
+	list_for_each_entry(pdev, &pbus->devices, bus_list) {
+		u16 status, error_bits;
+
+		pci_read_config_word(pdev, PCI_STATUS, &status);
+		error_bits =
+			(status & (PCI_STATUS_SIG_TARGET_ABORT |
+				   PCI_STATUS_REC_TARGET_ABORT));
+		if (error_bits) {
+			pci_write_config_word(pdev, PCI_STATUS, error_bits);
+			printk("%s: Device %s saw Target Abort [%016x]\n",
+			       pbm->name, pci_name(pdev), status);
+		}
+	}
+
+	list_for_each_entry(bus, &pbus->children, node)
+		pci_scan_for_target_abort(pbm, bus);
+}
+
+void pci_scan_for_master_abort(struct pci_pbm_info *pbm,
+			       struct pci_bus *pbus)
+{
+	struct pci_dev *pdev;
+	struct pci_bus *bus;
+
+	list_for_each_entry(pdev, &pbus->devices, bus_list) {
+		u16 status, error_bits;
+
+		pci_read_config_word(pdev, PCI_STATUS, &status);
+		error_bits =
+			(status & (PCI_STATUS_REC_MASTER_ABORT));
+		if (error_bits) {
+			pci_write_config_word(pdev, PCI_STATUS, error_bits);
+			printk("%s: Device %s received Master Abort [%016x]\n",
+			       pbm->name, pci_name(pdev), status);
+		}
+	}
+
+	list_for_each_entry(bus, &pbus->children, node)
+		pci_scan_for_master_abort(pbm, bus);
+}
+
+void pci_scan_for_parity_error(struct pci_pbm_info *pbm,
+			       struct pci_bus *pbus)
+{
+	struct pci_dev *pdev;
+	struct pci_bus *bus;
+
+	list_for_each_entry(pdev, &pbus->devices, bus_list) {
+		u16 status, error_bits;
+
+		pci_read_config_word(pdev, PCI_STATUS, &status);
+		error_bits =
+			(status & (PCI_STATUS_PARITY |
+				   PCI_STATUS_DETECTED_PARITY));
+		if (error_bits) {
+			pci_write_config_word(pdev, PCI_STATUS, error_bits);
+			printk("%s: Device %s saw Parity Error [%016x]\n",
+			       pbm->name, pci_name(pdev), status);
+		}
+	}
+
+	list_for_each_entry(bus, &pbus->children, node)
+		pci_scan_for_parity_error(pbm, bus);
+}
diff --git a/arch/sparc/kernel/pci_fire.c b/arch/sparc/kernel/pci_fire.c
new file mode 100644
index 000000000000..9462b68f4894
--- /dev/null
+++ b/arch/sparc/kernel/pci_fire.c
@@ -0,0 +1,521 @@
+/* pci_fire.c: Sun4u platform PCI-E controller support.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/msi.h>
+#include <linux/irq.h>
+#include <linux/of_device.h>
+
+#include <asm/prom.h>
+#include <asm/irq.h>
+#include <asm/upa.h>
+
+#include "pci_impl.h"
+
+#define DRIVER_NAME	"fire"
+#define PFX		DRIVER_NAME ": "
+
+#define FIRE_IOMMU_CONTROL	0x40000UL
+#define FIRE_IOMMU_TSBBASE	0x40008UL
+#define FIRE_IOMMU_FLUSH	0x40100UL
+#define FIRE_IOMMU_FLUSHINV	0x40108UL
+
+static int pci_fire_pbm_iommu_init(struct pci_pbm_info *pbm)
+{
+	struct iommu *iommu = pbm->iommu;
+	u32 vdma[2], dma_mask;
+	u64 control;
+	int tsbsize, err;
+
+	/* No virtual-dma property on these guys, use largest size.  */
+	vdma[0] = 0xc0000000; /* base */
+	vdma[1] = 0x40000000; /* size */
+	dma_mask = 0xffffffff;
+	tsbsize = 128;
+
+	/* Register addresses. */
+	iommu->iommu_control  = pbm->pbm_regs + FIRE_IOMMU_CONTROL;
+	iommu->iommu_tsbbase  = pbm->pbm_regs + FIRE_IOMMU_TSBBASE;
+	iommu->iommu_flush    = pbm->pbm_regs + FIRE_IOMMU_FLUSH;
+	iommu->iommu_flushinv = pbm->pbm_regs + FIRE_IOMMU_FLUSHINV;
+
+	/* We use the main control/status register of FIRE as the write
+	 * completion register.
+	 */
+	iommu->write_complete_reg = pbm->controller_regs + 0x410000UL;
+
+	/*
+	 * Invalidate TLB Entries.
+	 */
+	upa_writeq(~(u64)0, iommu->iommu_flushinv);
+
+	err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask,
+			       pbm->numa_node);
+	if (err)
+		return err;
+
+	upa_writeq(__pa(iommu->page_table) | 0x7UL, iommu->iommu_tsbbase);
+
+	control = upa_readq(iommu->iommu_control);
+	control |= (0x00000400 /* TSB cache snoop enable */	|
+		    0x00000300 /* Cache mode */			|
+		    0x00000002 /* Bypass enable */		|
+		    0x00000001 /* Translation enable */);
+	upa_writeq(control, iommu->iommu_control);
+
+	return 0;
+}
+
+#ifdef CONFIG_PCI_MSI
+struct pci_msiq_entry {
+	u64		word0;
+#define MSIQ_WORD0_RESV			0x8000000000000000UL
+#define MSIQ_WORD0_FMT_TYPE		0x7f00000000000000UL
+#define MSIQ_WORD0_FMT_TYPE_SHIFT	56
+#define MSIQ_WORD0_LEN			0x00ffc00000000000UL
+#define MSIQ_WORD0_LEN_SHIFT		46
+#define MSIQ_WORD0_ADDR0		0x00003fff00000000UL
+#define MSIQ_WORD0_ADDR0_SHIFT		32
+#define MSIQ_WORD0_RID			0x00000000ffff0000UL
+#define MSIQ_WORD0_RID_SHIFT		16
+#define MSIQ_WORD0_DATA0		0x000000000000ffffUL
+#define MSIQ_WORD0_DATA0_SHIFT		0
+
+#define MSIQ_TYPE_MSG			0x6
+#define MSIQ_TYPE_MSI32			0xb
+#define MSIQ_TYPE_MSI64			0xf
+
+	u64		word1;
+#define MSIQ_WORD1_ADDR1		0xffffffffffff0000UL
+#define MSIQ_WORD1_ADDR1_SHIFT		16
+#define MSIQ_WORD1_DATA1		0x000000000000ffffUL
+#define MSIQ_WORD1_DATA1_SHIFT		0
+
+	u64		resv[6];
+};
+
+/* All MSI registers are offset from pbm->pbm_regs */
+#define EVENT_QUEUE_BASE_ADDR_REG	0x010000UL
+#define  EVENT_QUEUE_BASE_ADDR_ALL_ONES	0xfffc000000000000UL
+
+#define EVENT_QUEUE_CONTROL_SET(EQ)	(0x011000UL + (EQ) * 0x8UL)
+#define  EVENT_QUEUE_CONTROL_SET_OFLOW	0x0200000000000000UL
+#define  EVENT_QUEUE_CONTROL_SET_EN	0x0000100000000000UL
+
+#define EVENT_QUEUE_CONTROL_CLEAR(EQ)	(0x011200UL + (EQ) * 0x8UL)
+#define  EVENT_QUEUE_CONTROL_CLEAR_OF	0x0200000000000000UL
+#define  EVENT_QUEUE_CONTROL_CLEAR_E2I	0x0000800000000000UL
+#define  EVENT_QUEUE_CONTROL_CLEAR_DIS	0x0000100000000000UL
+
+#define EVENT_QUEUE_STATE(EQ)		(0x011400UL + (EQ) * 0x8UL)
+#define  EVENT_QUEUE_STATE_MASK		0x0000000000000007UL
+#define  EVENT_QUEUE_STATE_IDLE		0x0000000000000001UL
+#define  EVENT_QUEUE_STATE_ACTIVE	0x0000000000000002UL
+#define  EVENT_QUEUE_STATE_ERROR	0x0000000000000004UL
+
+#define EVENT_QUEUE_TAIL(EQ)		(0x011600UL + (EQ) * 0x8UL)
+#define  EVENT_QUEUE_TAIL_OFLOW		0x0200000000000000UL
+#define  EVENT_QUEUE_TAIL_VAL		0x000000000000007fUL
+
+#define EVENT_QUEUE_HEAD(EQ)		(0x011800UL + (EQ) * 0x8UL)
+#define  EVENT_QUEUE_HEAD_VAL		0x000000000000007fUL
+
+#define MSI_MAP(MSI)			(0x020000UL + (MSI) * 0x8UL)
+#define  MSI_MAP_VALID			0x8000000000000000UL
+#define  MSI_MAP_EQWR_N			0x4000000000000000UL
+#define  MSI_MAP_EQNUM			0x000000000000003fUL
+
+#define MSI_CLEAR(MSI)			(0x028000UL + (MSI) * 0x8UL)
+#define  MSI_CLEAR_EQWR_N		0x4000000000000000UL
+
+#define IMONDO_DATA0			0x02C000UL
+#define  IMONDO_DATA0_DATA		0xffffffffffffffc0UL
+
+#define IMONDO_DATA1			0x02C008UL
+#define  IMONDO_DATA1_DATA		0xffffffffffffffffUL
+
+#define MSI_32BIT_ADDR			0x034000UL
+#define  MSI_32BIT_ADDR_VAL		0x00000000ffff0000UL
+
+#define MSI_64BIT_ADDR			0x034008UL
+#define  MSI_64BIT_ADDR_VAL		0xffffffffffff0000UL
+
+static int pci_fire_get_head(struct pci_pbm_info *pbm, unsigned long msiqid,
+			     unsigned long *head)
+{
+	*head = upa_readq(pbm->pbm_regs + EVENT_QUEUE_HEAD(msiqid));
+	return 0;
+}
+
+static int pci_fire_dequeue_msi(struct pci_pbm_info *pbm, unsigned long msiqid,
+				unsigned long *head, unsigned long *msi)
+{
+	unsigned long type_fmt, type, msi_num;
+	struct pci_msiq_entry *base, *ep;
+
+	base = (pbm->msi_queues + ((msiqid - pbm->msiq_first) * 8192));
+	ep = &base[*head];
+
+	if ((ep->word0 & MSIQ_WORD0_FMT_TYPE) == 0)
+		return 0;
+
+	type_fmt = ((ep->word0 & MSIQ_WORD0_FMT_TYPE) >>
+		    MSIQ_WORD0_FMT_TYPE_SHIFT);
+	type = (type_fmt >> 3);
+	if (unlikely(type != MSIQ_TYPE_MSI32 &&
+		     type != MSIQ_TYPE_MSI64))
+		return -EINVAL;
+
+	*msi = msi_num = ((ep->word0 & MSIQ_WORD0_DATA0) >>
+			  MSIQ_WORD0_DATA0_SHIFT);
+
+	upa_writeq(MSI_CLEAR_EQWR_N, pbm->pbm_regs + MSI_CLEAR(msi_num));
+
+	/* Clear the entry.  */
+	ep->word0 &= ~MSIQ_WORD0_FMT_TYPE;
+
+	/* Go to next entry in ring.  */
+	(*head)++;
+	if (*head >= pbm->msiq_ent_count)
+		*head = 0;
+
+	return 1;
+}
+
+static int pci_fire_set_head(struct pci_pbm_info *pbm, unsigned long msiqid,
+			     unsigned long head)
+{
+	upa_writeq(head, pbm->pbm_regs + EVENT_QUEUE_HEAD(msiqid));
+	return 0;
+}
+
+static int pci_fire_msi_setup(struct pci_pbm_info *pbm, unsigned long msiqid,
+			      unsigned long msi, int is_msi64)
+{
+	u64 val;
+
+	val = upa_readq(pbm->pbm_regs + MSI_MAP(msi));
+	val &= ~(MSI_MAP_EQNUM);
+	val |= msiqid;
+	upa_writeq(val, pbm->pbm_regs + MSI_MAP(msi));
+
+	upa_writeq(MSI_CLEAR_EQWR_N, pbm->pbm_regs + MSI_CLEAR(msi));
+
+	val = upa_readq(pbm->pbm_regs + MSI_MAP(msi));
+	val |= MSI_MAP_VALID;
+	upa_writeq(val, pbm->pbm_regs + MSI_MAP(msi));
+
+	return 0;
+}
+
+static int pci_fire_msi_teardown(struct pci_pbm_info *pbm, unsigned long msi)
+{
+	unsigned long msiqid;
+	u64 val;
+
+	val = upa_readq(pbm->pbm_regs + MSI_MAP(msi));
+	msiqid = (val & MSI_MAP_EQNUM);
+
+	val &= ~MSI_MAP_VALID;
+
+	upa_writeq(val, pbm->pbm_regs + MSI_MAP(msi));
+
+	return 0;
+}
+
+static int pci_fire_msiq_alloc(struct pci_pbm_info *pbm)
+{
+	unsigned long pages, order, i;
+
+	order = get_order(512 * 1024);
+	pages = __get_free_pages(GFP_KERNEL | __GFP_COMP, order);
+	if (pages == 0UL) {
+		printk(KERN_ERR "MSI: Cannot allocate MSI queues (o=%lu).\n",
+		       order);
+		return -ENOMEM;
+	}
+	memset((char *)pages, 0, PAGE_SIZE << order);
+	pbm->msi_queues = (void *) pages;
+
+	upa_writeq((EVENT_QUEUE_BASE_ADDR_ALL_ONES |
+		    __pa(pbm->msi_queues)),
+		   pbm->pbm_regs + EVENT_QUEUE_BASE_ADDR_REG);
+
+	upa_writeq(pbm->portid << 6, pbm->pbm_regs + IMONDO_DATA0);
+	upa_writeq(0, pbm->pbm_regs + IMONDO_DATA1);
+
+	upa_writeq(pbm->msi32_start, pbm->pbm_regs + MSI_32BIT_ADDR);
+	upa_writeq(pbm->msi64_start, pbm->pbm_regs + MSI_64BIT_ADDR);
+
+	for (i = 0; i < pbm->msiq_num; i++) {
+		upa_writeq(0, pbm->pbm_regs + EVENT_QUEUE_HEAD(i));
+		upa_writeq(0, pbm->pbm_regs + EVENT_QUEUE_TAIL(i));
+	}
+
+	return 0;
+}
+
+static void pci_fire_msiq_free(struct pci_pbm_info *pbm)
+{
+	unsigned long pages, order;
+
+	order = get_order(512 * 1024);
+	pages = (unsigned long) pbm->msi_queues;
+
+	free_pages(pages, order);
+
+	pbm->msi_queues = NULL;
+}
+
+static int pci_fire_msiq_build_irq(struct pci_pbm_info *pbm,
+				   unsigned long msiqid,
+				   unsigned long devino)
+{
+	unsigned long cregs = (unsigned long) pbm->pbm_regs;
+	unsigned long imap_reg, iclr_reg, int_ctrlr;
+	unsigned int virt_irq;
+	int fixup;
+	u64 val;
+
+	imap_reg = cregs + (0x001000UL + (devino * 0x08UL));
+	iclr_reg = cregs + (0x001400UL + (devino * 0x08UL));
+
+	/* XXX iterate amongst the 4 IRQ controllers XXX */
+	int_ctrlr = (1UL << 6);
+
+	val = upa_readq(imap_reg);
+	val |= (1UL << 63) | int_ctrlr;
+	upa_writeq(val, imap_reg);
+
+	fixup = ((pbm->portid << 6) | devino) - int_ctrlr;
+
+	virt_irq = build_irq(fixup, iclr_reg, imap_reg);
+	if (!virt_irq)
+		return -ENOMEM;
+
+	upa_writeq(EVENT_QUEUE_CONTROL_SET_EN,
+		   pbm->pbm_regs + EVENT_QUEUE_CONTROL_SET(msiqid));
+
+	return virt_irq;
+}
+
+static const struct sparc64_msiq_ops pci_fire_msiq_ops = {
+	.get_head	=	pci_fire_get_head,
+	.dequeue_msi	=	pci_fire_dequeue_msi,
+	.set_head	=	pci_fire_set_head,
+	.msi_setup	=	pci_fire_msi_setup,
+	.msi_teardown	=	pci_fire_msi_teardown,
+	.msiq_alloc	=	pci_fire_msiq_alloc,
+	.msiq_free	=	pci_fire_msiq_free,
+	.msiq_build_irq	=	pci_fire_msiq_build_irq,
+};
+
+static void pci_fire_msi_init(struct pci_pbm_info *pbm)
+{
+	sparc64_pbm_msi_init(pbm, &pci_fire_msiq_ops);
+}
+#else /* CONFIG_PCI_MSI */
+static void pci_fire_msi_init(struct pci_pbm_info *pbm)
+{
+}
+#endif /* !(CONFIG_PCI_MSI) */
+
+/* Based at pbm->controller_regs */
+#define FIRE_PARITY_CONTROL	0x470010UL
+#define  FIRE_PARITY_ENAB	0x8000000000000000UL
+#define FIRE_FATAL_RESET_CTL	0x471028UL
+#define  FIRE_FATAL_RESET_SPARE	0x0000000004000000UL
+#define  FIRE_FATAL_RESET_MB	0x0000000002000000UL
+#define  FIRE_FATAL_RESET_CPE	0x0000000000008000UL
+#define  FIRE_FATAL_RESET_APE	0x0000000000004000UL
+#define  FIRE_FATAL_RESET_PIO	0x0000000000000040UL
+#define  FIRE_FATAL_RESET_JW	0x0000000000000004UL
+#define  FIRE_FATAL_RESET_JI	0x0000000000000002UL
+#define  FIRE_FATAL_RESET_JR	0x0000000000000001UL
+#define FIRE_CORE_INTR_ENABLE	0x471800UL
+
+/* Based at pbm->pbm_regs */
+#define FIRE_TLU_CTRL		0x80000UL
+#define  FIRE_TLU_CTRL_TIM	0x00000000da000000UL
+#define  FIRE_TLU_CTRL_QDET	0x0000000000000100UL
+#define  FIRE_TLU_CTRL_CFG	0x0000000000000001UL
+#define FIRE_TLU_DEV_CTRL	0x90008UL
+#define FIRE_TLU_LINK_CTRL	0x90020UL
+#define FIRE_TLU_LINK_CTRL_CLK	0x0000000000000040UL
+#define FIRE_LPU_RESET		0xe2008UL
+#define FIRE_LPU_LLCFG		0xe2200UL
+#define  FIRE_LPU_LLCFG_VC0	0x0000000000000100UL
+#define FIRE_LPU_FCTRL_UCTRL	0xe2240UL
+#define  FIRE_LPU_FCTRL_UCTRL_N	0x0000000000000002UL
+#define  FIRE_LPU_FCTRL_UCTRL_P	0x0000000000000001UL
+#define FIRE_LPU_TXL_FIFOP	0xe2430UL
+#define FIRE_LPU_LTSSM_CFG2	0xe2788UL
+#define FIRE_LPU_LTSSM_CFG3	0xe2790UL
+#define FIRE_LPU_LTSSM_CFG4	0xe2798UL
+#define FIRE_LPU_LTSSM_CFG5	0xe27a0UL
+#define FIRE_DMC_IENAB		0x31800UL
+#define FIRE_DMC_DBG_SEL_A	0x53000UL
+#define FIRE_DMC_DBG_SEL_B	0x53008UL
+#define FIRE_PEC_IENAB		0x51800UL
+
+static void pci_fire_hw_init(struct pci_pbm_info *pbm)
+{
+	u64 val;
+
+	upa_writeq(FIRE_PARITY_ENAB,
+		   pbm->controller_regs + FIRE_PARITY_CONTROL);
+
+	upa_writeq((FIRE_FATAL_RESET_SPARE |
+		    FIRE_FATAL_RESET_MB |
+		    FIRE_FATAL_RESET_CPE |
+		    FIRE_FATAL_RESET_APE |
+		    FIRE_FATAL_RESET_PIO |
+		    FIRE_FATAL_RESET_JW |
+		    FIRE_FATAL_RESET_JI |
+		    FIRE_FATAL_RESET_JR),
+		   pbm->controller_regs + FIRE_FATAL_RESET_CTL);
+
+	upa_writeq(~(u64)0, pbm->controller_regs + FIRE_CORE_INTR_ENABLE);
+
+	val = upa_readq(pbm->pbm_regs + FIRE_TLU_CTRL);
+	val |= (FIRE_TLU_CTRL_TIM |
+		FIRE_TLU_CTRL_QDET |
+		FIRE_TLU_CTRL_CFG);
+	upa_writeq(val, pbm->pbm_regs + FIRE_TLU_CTRL);
+	upa_writeq(0, pbm->pbm_regs + FIRE_TLU_DEV_CTRL);
+	upa_writeq(FIRE_TLU_LINK_CTRL_CLK,
+		   pbm->pbm_regs + FIRE_TLU_LINK_CTRL);
+
+	upa_writeq(0, pbm->pbm_regs + FIRE_LPU_RESET);
+	upa_writeq(FIRE_LPU_LLCFG_VC0, pbm->pbm_regs + FIRE_LPU_LLCFG);
+	upa_writeq((FIRE_LPU_FCTRL_UCTRL_N | FIRE_LPU_FCTRL_UCTRL_P),
+		   pbm->pbm_regs + FIRE_LPU_FCTRL_UCTRL);
+	upa_writeq(((0xffff << 16) | (0x0000 << 0)),
+		   pbm->pbm_regs + FIRE_LPU_TXL_FIFOP);
+	upa_writeq(3000000, pbm->pbm_regs + FIRE_LPU_LTSSM_CFG2);
+	upa_writeq(500000, pbm->pbm_regs + FIRE_LPU_LTSSM_CFG3);
+	upa_writeq((2 << 16) | (140 << 8),
+		   pbm->pbm_regs + FIRE_LPU_LTSSM_CFG4);
+	upa_writeq(0, pbm->pbm_regs + FIRE_LPU_LTSSM_CFG5);
+
+	upa_writeq(~(u64)0, pbm->pbm_regs + FIRE_DMC_IENAB);
+	upa_writeq(0, pbm->pbm_regs + FIRE_DMC_DBG_SEL_A);
+	upa_writeq(0, pbm->pbm_regs + FIRE_DMC_DBG_SEL_B);
+
+	upa_writeq(~(u64)0, pbm->pbm_regs + FIRE_PEC_IENAB);
+}
+
+static int __init pci_fire_pbm_init(struct pci_pbm_info *pbm,
+				    struct of_device *op, u32 portid)
+{
+	const struct linux_prom64_registers *regs;
+	struct device_node *dp = op->node;
+	int err;
+
+	pbm->numa_node = -1;
+
+	pbm->pci_ops = &sun4u_pci_ops;
+	pbm->config_space_reg_bits = 12;
+
+	pbm->index = pci_num_pbms++;
+
+	pbm->portid = portid;
+	pbm->op = op;
+	pbm->name = dp->full_name;
+
+	regs = of_get_property(dp, "reg", NULL);
+	pbm->pbm_regs = regs[0].phys_addr;
+	pbm->controller_regs = regs[1].phys_addr - 0x410000UL;
+
+	printk("%s: SUN4U PCIE Bus Module\n", pbm->name);
+
+	pci_determine_mem_io_space(pbm);
+
+	pci_get_pbm_props(pbm);
+
+	pci_fire_hw_init(pbm);
+
+	err = pci_fire_pbm_iommu_init(pbm);
+	if (err)
+		return err;
+
+	pci_fire_msi_init(pbm);
+
+	pbm->pci_bus = pci_scan_one_pbm(pbm, &op->dev);
+
+	/* XXX register error interrupt handlers XXX */
+
+	pbm->next = pci_pbm_root;
+	pci_pbm_root = pbm;
+
+	return 0;
+}
+
+static int __devinit fire_probe(struct of_device *op,
+				const struct of_device_id *match)
+{
+	struct device_node *dp = op->node;
+	struct pci_pbm_info *pbm;
+	struct iommu *iommu;
+	u32 portid;
+	int err;
+
+	portid = of_getintprop_default(dp, "portid", 0xff);
+
+	err = -ENOMEM;
+	pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
+	if (!pbm) {
+		printk(KERN_ERR PFX "Cannot allocate pci_pbminfo.\n");
+		goto out_err;
+	}
+
+	iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
+	if (!iommu) {
+		printk(KERN_ERR PFX "Cannot allocate PBM iommu.\n");
+		goto out_free_controller;
+	}
+
+	pbm->iommu = iommu;
+
+	err = pci_fire_pbm_init(pbm, op, portid);
+	if (err)
+		goto out_free_iommu;
+
+	dev_set_drvdata(&op->dev, pbm);
+
+	return 0;
+
+out_free_iommu:
+	kfree(pbm->iommu);
+			
+out_free_controller:
+	kfree(pbm);
+
+out_err:
+	return err;
+}
+
+static struct of_device_id __initdata fire_match[] = {
+	{
+		.name = "pci",
+		.compatible = "pciex108e,80f0",
+	},
+	{},
+};
+
+static struct of_platform_driver fire_driver = {
+	.name		= DRIVER_NAME,
+	.match_table	= fire_match,
+	.probe		= fire_probe,
+};
+
+static int __init fire_init(void)
+{
+	return of_register_driver(&fire_driver, &of_bus_type);
+}
+
+subsys_initcall(fire_init);
diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h
new file mode 100644
index 000000000000..03186824327e
--- /dev/null
+++ b/arch/sparc/kernel/pci_impl.h
@@ -0,0 +1,185 @@
+/* pci_impl.h: Helper definitions for PCI controller support.
+ *
+ * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#ifndef PCI_IMPL_H
+#define PCI_IMPL_H
+
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/pci.h>
+#include <linux/msi.h>
+#include <linux/of_device.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/iommu.h>
+
+/* The abstraction used here is that there are PCI controllers,
+ * each with one (Sabre) or two (PSYCHO/SCHIZO) PCI bus modules
+ * underneath.  Each PCI bus module uses an IOMMU (shared by both
+ * PBMs of a controller, or per-PBM), and if a streaming buffer
+ * is present, each PCI bus module has it's own. (ie. the IOMMU
+ * might be shared between PBMs, the STC is never shared)
+ * Furthermore, each PCI bus module controls it's own autonomous
+ * PCI bus.
+ */
+
+#define PCI_STC_FLUSHFLAG_INIT(STC) \
+	(*((STC)->strbuf_flushflag) = 0UL)
+#define PCI_STC_FLUSHFLAG_SET(STC) \
+	(*((STC)->strbuf_flushflag) != 0UL)
+
+#ifdef CONFIG_PCI_MSI
+struct pci_pbm_info;
+struct sparc64_msiq_ops {
+	int (*get_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
+			unsigned long *head);
+	int (*dequeue_msi)(struct pci_pbm_info *pbm, unsigned long msiqid,
+			   unsigned long *head, unsigned long *msi);
+	int (*set_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
+			unsigned long head);
+	int (*msi_setup)(struct pci_pbm_info *pbm, unsigned long msiqid,
+			 unsigned long msi, int is_msi64);
+	int (*msi_teardown)(struct pci_pbm_info *pbm, unsigned long msi);
+	int (*msiq_alloc)(struct pci_pbm_info *pbm);
+	void (*msiq_free)(struct pci_pbm_info *pbm);
+	int (*msiq_build_irq)(struct pci_pbm_info *pbm, unsigned long msiqid,
+			      unsigned long devino);
+};
+
+extern void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
+				 const struct sparc64_msiq_ops *ops);
+
+struct sparc64_msiq_cookie {
+	struct pci_pbm_info *pbm;
+	unsigned long msiqid;
+};
+#endif
+
+struct pci_pbm_info {
+	struct pci_pbm_info		*next;
+	struct pci_pbm_info		*sibling;
+	int				index;
+
+	/* Physical address base of controller registers. */
+	unsigned long			controller_regs;
+
+	/* Physical address base of PBM registers. */
+	unsigned long			pbm_regs;
+
+	/* Physical address of DMA sync register, if any.  */
+	unsigned long			sync_reg;
+
+	/* Opaque 32-bit system bus Port ID. */
+	u32				portid;
+
+	/* Opaque 32-bit handle used for hypervisor calls.  */
+	u32				devhandle;
+
+	/* Chipset version information. */
+	int				chip_type;
+#define PBM_CHIP_TYPE_SABRE		1
+#define PBM_CHIP_TYPE_PSYCHO		2
+#define PBM_CHIP_TYPE_SCHIZO		3
+#define PBM_CHIP_TYPE_SCHIZO_PLUS	4
+#define PBM_CHIP_TYPE_TOMATILLO		5
+	int				chip_version;
+	int				chip_revision;
+
+	/* Name used for top-level resources. */
+	char				*name;
+
+	/* OBP specific information. */
+	struct of_device		*op;
+	u64				ino_bitmap;
+
+	/* PBM I/O and Memory space resources. */
+	struct resource			io_space;
+	struct resource			mem_space;
+
+	/* Base of PCI Config space, can be per-PBM or shared. */
+	unsigned long			config_space;
+
+	/* This will be 12 on PCI-E controllers, 8 elsewhere.  */
+	unsigned long			config_space_reg_bits;
+
+	unsigned long			pci_afsr;
+	unsigned long			pci_afar;
+	unsigned long			pci_csr;
+
+	/* State of 66MHz capabilities on this PBM. */
+	int				is_66mhz_capable;
+	int				all_devs_66mhz;
+
+#ifdef CONFIG_PCI_MSI
+	/* MSI info.  */
+	u32				msiq_num;
+	u32				msiq_ent_count;
+	u32				msiq_first;
+	u32				msiq_first_devino;
+	u32				msiq_rotor;
+	struct sparc64_msiq_cookie	*msiq_irq_cookies;
+	u32				msi_num;
+	u32				msi_first;
+	u32				msi_data_mask;
+	u32				msix_data_width;
+	u64				msi32_start;
+	u64				msi64_start;
+	u32				msi32_len;
+	u32				msi64_len;
+	void				*msi_queues;
+	unsigned long			*msi_bitmap;
+	unsigned int			*msi_irq_table;
+	int (*setup_msi_irq)(unsigned int *virt_irq_p, struct pci_dev *pdev,
+			     struct msi_desc *entry);
+	void (*teardown_msi_irq)(unsigned int virt_irq, struct pci_dev *pdev);
+	const struct sparc64_msiq_ops	*msi_ops;
+#endif /* !(CONFIG_PCI_MSI) */
+
+	/* This PBM's streaming buffer. */
+	struct strbuf			stc;
+
+	/* IOMMU state, potentially shared by both PBM segments. */
+	struct iommu			*iommu;
+
+	/* Now things for the actual PCI bus probes. */
+	unsigned int			pci_first_busno;
+	unsigned int			pci_last_busno;
+	struct pci_bus			*pci_bus;
+	struct pci_ops			*pci_ops;
+
+	int				numa_node;
+};
+
+extern struct pci_pbm_info *pci_pbm_root;
+
+extern int pci_num_pbms;
+
+/* PCI bus scanning and fixup support. */
+extern void pci_get_pbm_props(struct pci_pbm_info *pbm);
+extern struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
+					struct device *parent);
+extern void pci_determine_mem_io_space(struct pci_pbm_info *pbm);
+
+/* Error reporting support. */
+extern void pci_scan_for_target_abort(struct pci_pbm_info *, struct pci_bus *);
+extern void pci_scan_for_master_abort(struct pci_pbm_info *, struct pci_bus *);
+extern void pci_scan_for_parity_error(struct pci_pbm_info *, struct pci_bus *);
+
+/* Configuration space access. */
+extern void pci_config_read8(u8 *addr, u8 *ret);
+extern void pci_config_read16(u16 *addr, u16 *ret);
+extern void pci_config_read32(u32 *addr, u32 *ret);
+extern void pci_config_write8(u8 *addr, u8 val);
+extern void pci_config_write16(u16 *addr, u16 val);
+extern void pci_config_write32(u32 *addr, u32 val);
+
+extern struct pci_ops sun4u_pci_ops;
+extern struct pci_ops sun4v_pci_ops;
+
+extern volatile int pci_poke_in_progress;
+extern volatile int pci_poke_cpu;
+extern volatile int pci_poke_faulted;
+
+#endif /* !(PCI_IMPL_H) */
diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c
new file mode 100644
index 000000000000..4ef282e81912
--- /dev/null
+++ b/arch/sparc/kernel/pci_msi.c
@@ -0,0 +1,447 @@
+/* pci_msi.c: Sparc64 MSI support common layer.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include "pci_impl.h"
+
+static irqreturn_t sparc64_msiq_interrupt(int irq, void *cookie)
+{
+	struct sparc64_msiq_cookie *msiq_cookie = cookie;
+	struct pci_pbm_info *pbm = msiq_cookie->pbm;
+	unsigned long msiqid = msiq_cookie->msiqid;
+	const struct sparc64_msiq_ops *ops;
+	unsigned long orig_head, head;
+	int err;
+
+	ops = pbm->msi_ops;
+
+	err = ops->get_head(pbm, msiqid, &head);
+	if (unlikely(err < 0))
+		goto err_get_head;
+
+	orig_head = head;
+	for (;;) {
+		unsigned long msi;
+
+		err = ops->dequeue_msi(pbm, msiqid, &head, &msi);
+		if (likely(err > 0)) {
+			struct irq_desc *desc;
+			unsigned int virt_irq;
+
+			virt_irq = pbm->msi_irq_table[msi - pbm->msi_first];
+			desc = irq_desc + virt_irq;
+
+			desc->handle_irq(virt_irq, desc);
+		}
+
+		if (unlikely(err < 0))
+			goto err_dequeue;
+
+		if (err == 0)
+			break;
+	}
+	if (likely(head != orig_head)) {
+		err = ops->set_head(pbm, msiqid, head);
+		if (unlikely(err < 0))
+			goto err_set_head;
+	}
+	return IRQ_HANDLED;
+
+err_get_head:
+	printk(KERN_EMERG "MSI: Get head on msiqid[%lu] gives error %d\n",
+	       msiqid, err);
+	goto err_out;
+
+err_dequeue:
+	printk(KERN_EMERG "MSI: Dequeue head[%lu] from msiqid[%lu] "
+	       "gives error %d\n",
+	       head, msiqid, err);
+	goto err_out;
+
+err_set_head:
+	printk(KERN_EMERG "MSI: Set head[%lu] on msiqid[%lu] "
+	       "gives error %d\n",
+	       head, msiqid, err);
+	goto err_out;
+
+err_out:
+	return IRQ_NONE;
+}
+
+static u32 pick_msiq(struct pci_pbm_info *pbm)
+{
+	static DEFINE_SPINLOCK(rotor_lock);
+	unsigned long flags;
+	u32 ret, rotor;
+
+	spin_lock_irqsave(&rotor_lock, flags);
+
+	rotor = pbm->msiq_rotor;
+	ret = pbm->msiq_first + rotor;
+
+	if (++rotor >= pbm->msiq_num)
+		rotor = 0;
+	pbm->msiq_rotor = rotor;
+
+	spin_unlock_irqrestore(&rotor_lock, flags);
+
+	return ret;
+}
+
+
+static int alloc_msi(struct pci_pbm_info *pbm)
+{
+	int i;
+
+	for (i = 0; i < pbm->msi_num; i++) {
+		if (!test_and_set_bit(i, pbm->msi_bitmap))
+			return i + pbm->msi_first;
+	}
+
+	return -ENOENT;
+}
+
+static void free_msi(struct pci_pbm_info *pbm, int msi_num)
+{
+	msi_num -= pbm->msi_first;
+	clear_bit(msi_num, pbm->msi_bitmap);
+}
+
+static struct irq_chip msi_irq = {
+	.typename	= "PCI-MSI",
+	.mask		= mask_msi_irq,
+	.unmask		= unmask_msi_irq,
+	.enable		= unmask_msi_irq,
+	.disable	= mask_msi_irq,
+	/* XXX affinity XXX */
+};
+
+static int sparc64_setup_msi_irq(unsigned int *virt_irq_p,
+				 struct pci_dev *pdev,
+				 struct msi_desc *entry)
+{
+	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
+	const struct sparc64_msiq_ops *ops = pbm->msi_ops;
+	struct msi_msg msg;
+	int msi, err;
+	u32 msiqid;
+
+	*virt_irq_p = virt_irq_alloc(0, 0);
+	err = -ENOMEM;
+	if (!*virt_irq_p)
+		goto out_err;
+
+	set_irq_chip_and_handler_name(*virt_irq_p, &msi_irq,
+				      handle_simple_irq, "MSI");
+
+	err = alloc_msi(pbm);
+	if (unlikely(err < 0))
+		goto out_virt_irq_free;
+
+	msi = err;
+
+	msiqid = pick_msiq(pbm);
+
+	err = ops->msi_setup(pbm, msiqid, msi,
+			     (entry->msi_attrib.is_64 ? 1 : 0));
+	if (err)
+		goto out_msi_free;
+
+	pbm->msi_irq_table[msi - pbm->msi_first] = *virt_irq_p;
+
+	if (entry->msi_attrib.is_64) {
+		msg.address_hi = pbm->msi64_start >> 32;
+		msg.address_lo = pbm->msi64_start & 0xffffffff;
+	} else {
+		msg.address_hi = 0;
+		msg.address_lo = pbm->msi32_start;
+	}
+	msg.data = msi;
+
+	set_irq_msi(*virt_irq_p, entry);
+	write_msi_msg(*virt_irq_p, &msg);
+
+	return 0;
+
+out_msi_free:
+	free_msi(pbm, msi);
+
+out_virt_irq_free:
+	set_irq_chip(*virt_irq_p, NULL);
+	virt_irq_free(*virt_irq_p);
+	*virt_irq_p = 0;
+
+out_err:
+	return err;
+}
+
+static void sparc64_teardown_msi_irq(unsigned int virt_irq,
+				     struct pci_dev *pdev)
+{
+	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
+	const struct sparc64_msiq_ops *ops = pbm->msi_ops;
+	unsigned int msi_num;
+	int i, err;
+
+	for (i = 0; i < pbm->msi_num; i++) {
+		if (pbm->msi_irq_table[i] == virt_irq)
+			break;
+	}
+	if (i >= pbm->msi_num) {
+		printk(KERN_ERR "%s: teardown: No MSI for irq %u\n",
+		       pbm->name, virt_irq);
+		return;
+	}
+
+	msi_num = pbm->msi_first + i;
+	pbm->msi_irq_table[i] = ~0U;
+
+	err = ops->msi_teardown(pbm, msi_num);
+	if (err) {
+		printk(KERN_ERR "%s: teardown: ops->teardown() on MSI %u, "
+		       "irq %u, gives error %d\n",
+		       pbm->name, msi_num, virt_irq, err);
+		return;
+	}
+
+	free_msi(pbm, msi_num);
+
+	set_irq_chip(virt_irq, NULL);
+	virt_irq_free(virt_irq);
+}
+
+static int msi_bitmap_alloc(struct pci_pbm_info *pbm)
+{
+	unsigned long size, bits_per_ulong;
+
+	bits_per_ulong = sizeof(unsigned long) * 8;
+	size = (pbm->msi_num + (bits_per_ulong - 1)) & ~(bits_per_ulong - 1);
+	size /= 8;
+	BUG_ON(size % sizeof(unsigned long));
+
+	pbm->msi_bitmap = kzalloc(size, GFP_KERNEL);
+	if (!pbm->msi_bitmap)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void msi_bitmap_free(struct pci_pbm_info *pbm)
+{
+	kfree(pbm->msi_bitmap);
+	pbm->msi_bitmap = NULL;
+}
+
+static int msi_table_alloc(struct pci_pbm_info *pbm)
+{
+	int size, i;
+
+	size = pbm->msiq_num * sizeof(struct sparc64_msiq_cookie);
+	pbm->msiq_irq_cookies = kzalloc(size, GFP_KERNEL);
+	if (!pbm->msiq_irq_cookies)
+		return -ENOMEM;
+
+	for (i = 0; i < pbm->msiq_num; i++) {
+		struct sparc64_msiq_cookie *p;
+
+		p = &pbm->msiq_irq_cookies[i];
+		p->pbm = pbm;
+		p->msiqid = pbm->msiq_first + i;
+	}
+
+	size = pbm->msi_num * sizeof(unsigned int);
+	pbm->msi_irq_table = kzalloc(size, GFP_KERNEL);
+	if (!pbm->msi_irq_table) {
+		kfree(pbm->msiq_irq_cookies);
+		pbm->msiq_irq_cookies = NULL;
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void msi_table_free(struct pci_pbm_info *pbm)
+{
+	kfree(pbm->msiq_irq_cookies);
+	pbm->msiq_irq_cookies = NULL;
+
+	kfree(pbm->msi_irq_table);
+	pbm->msi_irq_table = NULL;
+}
+
+static int bringup_one_msi_queue(struct pci_pbm_info *pbm,
+				 const struct sparc64_msiq_ops *ops,
+				 unsigned long msiqid,
+				 unsigned long devino)
+{
+	int irq = ops->msiq_build_irq(pbm, msiqid, devino);
+	int err, nid;
+
+	if (irq < 0)
+		return irq;
+
+	nid = pbm->numa_node;
+	if (nid != -1) {
+		cpumask_t numa_mask = *cpumask_of_node(nid);
+
+		irq_set_affinity(irq, &numa_mask);
+	}
+	err = request_irq(irq, sparc64_msiq_interrupt, 0,
+			  "MSIQ",
+			  &pbm->msiq_irq_cookies[msiqid - pbm->msiq_first]);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int sparc64_bringup_msi_queues(struct pci_pbm_info *pbm,
+				      const struct sparc64_msiq_ops *ops)
+{
+	int i;
+
+	for (i = 0; i < pbm->msiq_num; i++) {
+		unsigned long msiqid = i + pbm->msiq_first;
+		unsigned long devino = i + pbm->msiq_first_devino;
+		int err;
+
+		err = bringup_one_msi_queue(pbm, ops, msiqid, devino);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
+			  const struct sparc64_msiq_ops *ops)
+{
+	const u32 *val;
+	int len;
+
+	val = of_get_property(pbm->op->node, "#msi-eqs", &len);
+	if (!val || len != 4)
+		goto no_msi;
+	pbm->msiq_num = *val;
+	if (pbm->msiq_num) {
+		const struct msiq_prop {
+			u32 first_msiq;
+			u32 num_msiq;
+			u32 first_devino;
+		} *mqp;
+		const struct msi_range_prop {
+			u32 first_msi;
+			u32 num_msi;
+		} *mrng;
+		const struct addr_range_prop {
+			u32 msi32_high;
+			u32 msi32_low;
+			u32 msi32_len;
+			u32 msi64_high;
+			u32 msi64_low;
+			u32 msi64_len;
+		} *arng;
+
+		val = of_get_property(pbm->op->node, "msi-eq-size", &len);
+		if (!val || len != 4)
+			goto no_msi;
+
+		pbm->msiq_ent_count = *val;
+
+		mqp = of_get_property(pbm->op->node,
+				      "msi-eq-to-devino", &len);
+		if (!mqp)
+			mqp = of_get_property(pbm->op->node,
+					      "msi-eq-devino", &len);
+		if (!mqp || len != sizeof(struct msiq_prop))
+			goto no_msi;
+
+		pbm->msiq_first = mqp->first_msiq;
+		pbm->msiq_first_devino = mqp->first_devino;
+
+		val = of_get_property(pbm->op->node, "#msi", &len);
+		if (!val || len != 4)
+			goto no_msi;
+		pbm->msi_num = *val;
+
+		mrng = of_get_property(pbm->op->node, "msi-ranges", &len);
+		if (!mrng || len != sizeof(struct msi_range_prop))
+			goto no_msi;
+		pbm->msi_first = mrng->first_msi;
+
+		val = of_get_property(pbm->op->node, "msi-data-mask", &len);
+		if (!val || len != 4)
+			goto no_msi;
+		pbm->msi_data_mask = *val;
+
+		val = of_get_property(pbm->op->node, "msix-data-width", &len);
+		if (!val || len != 4)
+			goto no_msi;
+		pbm->msix_data_width = *val;
+
+		arng = of_get_property(pbm->op->node, "msi-address-ranges",
+				       &len);
+		if (!arng || len != sizeof(struct addr_range_prop))
+			goto no_msi;
+		pbm->msi32_start = ((u64)arng->msi32_high << 32) |
+			(u64) arng->msi32_low;
+		pbm->msi64_start = ((u64)arng->msi64_high << 32) |
+			(u64) arng->msi64_low;
+		pbm->msi32_len = arng->msi32_len;
+		pbm->msi64_len = arng->msi64_len;
+
+		if (msi_bitmap_alloc(pbm))
+			goto no_msi;
+
+		if (msi_table_alloc(pbm)) {
+			msi_bitmap_free(pbm);
+			goto no_msi;
+		}
+
+		if (ops->msiq_alloc(pbm)) {
+			msi_table_free(pbm);
+			msi_bitmap_free(pbm);
+			goto no_msi;
+		}
+
+		if (sparc64_bringup_msi_queues(pbm, ops)) {
+			ops->msiq_free(pbm);
+			msi_table_free(pbm);
+			msi_bitmap_free(pbm);
+			goto no_msi;
+		}
+
+		printk(KERN_INFO "%s: MSI Queue first[%u] num[%u] count[%u] "
+		       "devino[0x%x]\n",
+		       pbm->name,
+		       pbm->msiq_first, pbm->msiq_num,
+		       pbm->msiq_ent_count,
+		       pbm->msiq_first_devino);
+		printk(KERN_INFO "%s: MSI first[%u] num[%u] mask[0x%x] "
+		       "width[%u]\n",
+		       pbm->name,
+		       pbm->msi_first, pbm->msi_num, pbm->msi_data_mask,
+		       pbm->msix_data_width);
+		printk(KERN_INFO "%s: MSI addr32[0x%lx:0x%x] "
+		       "addr64[0x%lx:0x%x]\n",
+		       pbm->name,
+		       pbm->msi32_start, pbm->msi32_len,
+		       pbm->msi64_start, pbm->msi64_len);
+		printk(KERN_INFO "%s: MSI queues at RA [%016lx]\n",
+		       pbm->name,
+		       __pa(pbm->msi_queues));
+
+		pbm->msi_ops = ops;
+		pbm->setup_msi_irq = sparc64_setup_msi_irq;
+		pbm->teardown_msi_irq = sparc64_teardown_msi_irq;
+	}
+	return;
+
+no_msi:
+	pbm->msiq_num = 0;
+	printk(KERN_INFO "%s: No MSI support.\n", pbm->name);
+}
diff --git a/arch/sparc/kernel/pci_psycho.c b/arch/sparc/kernel/pci_psycho.c
new file mode 100644
index 000000000000..dfb3ec892987
--- /dev/null
+++ b/arch/sparc/kernel/pci_psycho.c
@@ -0,0 +1,618 @@
+/* pci_psycho.c: PSYCHO/U2P specific PCI controller support.
+ *
+ * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1998, 1999 Eddie C. Dost   (ecd@skynet.be)
+ * Copyright (C) 1999 Jakub Jelinek   (jakub@redhat.com)
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/of_device.h>
+
+#include <asm/iommu.h>
+#include <asm/irq.h>
+#include <asm/starfire.h>
+#include <asm/prom.h>
+#include <asm/upa.h>
+
+#include "pci_impl.h"
+#include "iommu_common.h"
+#include "psycho_common.h"
+
+#define DRIVER_NAME	"psycho"
+#define PFX		DRIVER_NAME ": "
+
+/* Misc. PSYCHO PCI controller register offsets and definitions. */
+#define PSYCHO_CONTROL		0x0010UL
+#define  PSYCHO_CONTROL_IMPL	 0xf000000000000000UL /* Implementation of this PSYCHO*/
+#define  PSYCHO_CONTROL_VER	 0x0f00000000000000UL /* Version of this PSYCHO       */
+#define  PSYCHO_CONTROL_MID	 0x00f8000000000000UL /* UPA Module ID of PSYCHO      */
+#define  PSYCHO_CONTROL_IGN	 0x0007c00000000000UL /* Interrupt Group Number       */
+#define  PSYCHO_CONTROL_RESV     0x00003ffffffffff0UL /* Reserved                     */
+#define  PSYCHO_CONTROL_APCKEN	 0x0000000000000008UL /* Address Parity Check Enable  */
+#define  PSYCHO_CONTROL_APERR	 0x0000000000000004UL /* Incoming System Addr Parerr  */
+#define  PSYCHO_CONTROL_IAP	 0x0000000000000002UL /* Invert UPA Parity            */
+#define  PSYCHO_CONTROL_MODE	 0x0000000000000001UL /* PSYCHO clock mode            */
+#define PSYCHO_PCIA_CTRL	0x2000UL
+#define PSYCHO_PCIB_CTRL	0x4000UL
+#define  PSYCHO_PCICTRL_RESV1	 0xfffffff000000000UL /* Reserved                     */
+#define  PSYCHO_PCICTRL_SBH_ERR	 0x0000000800000000UL /* Streaming byte hole error    */
+#define  PSYCHO_PCICTRL_SERR	 0x0000000400000000UL /* SERR signal asserted         */
+#define  PSYCHO_PCICTRL_SPEED	 0x0000000200000000UL /* PCI speed (1 is U2P clock)   */
+#define  PSYCHO_PCICTRL_RESV2	 0x00000001ffc00000UL /* Reserved                     */
+#define  PSYCHO_PCICTRL_ARB_PARK 0x0000000000200000UL /* PCI arbitration parking      */
+#define  PSYCHO_PCICTRL_RESV3	 0x00000000001ff800UL /* Reserved                     */
+#define  PSYCHO_PCICTRL_SBH_INT	 0x0000000000000400UL /* Streaming byte hole int enab */
+#define  PSYCHO_PCICTRL_WEN	 0x0000000000000200UL /* Power Mgmt Wake Enable       */
+#define  PSYCHO_PCICTRL_EEN	 0x0000000000000100UL /* PCI Error Interrupt Enable   */
+#define  PSYCHO_PCICTRL_RESV4	 0x00000000000000c0UL /* Reserved                     */
+#define  PSYCHO_PCICTRL_AEN	 0x000000000000003fUL /* PCI DVMA Arbitration Enable  */
+
+/* PSYCHO error handling support. */
+
+/* Helper function of IOMMU error checking, which checks out
+ * the state of the streaming buffers.  The IOMMU lock is
+ * held when this is called.
+ *
+ * For the PCI error case we know which PBM (and thus which
+ * streaming buffer) caused the error, but for the uncorrectable
+ * error case we do not.  So we always check both streaming caches.
+ */
+#define PSYCHO_STRBUF_CONTROL_A 0x2800UL
+#define PSYCHO_STRBUF_CONTROL_B 0x4800UL
+#define  PSYCHO_STRBUF_CTRL_LPTR    0x00000000000000f0UL /* LRU Lock Pointer */
+#define  PSYCHO_STRBUF_CTRL_LENAB   0x0000000000000008UL /* LRU Lock Enable */
+#define  PSYCHO_STRBUF_CTRL_RRDIS   0x0000000000000004UL /* Rerun Disable */
+#define  PSYCHO_STRBUF_CTRL_DENAB   0x0000000000000002UL /* Diagnostic Mode Enable */
+#define  PSYCHO_STRBUF_CTRL_ENAB    0x0000000000000001UL /* Streaming Buffer Enable */
+#define PSYCHO_STRBUF_FLUSH_A   0x2808UL
+#define PSYCHO_STRBUF_FLUSH_B   0x4808UL
+#define PSYCHO_STRBUF_FSYNC_A   0x2810UL
+#define PSYCHO_STRBUF_FSYNC_B   0x4810UL
+#define PSYCHO_STC_DATA_A	0xb000UL
+#define PSYCHO_STC_DATA_B	0xc000UL
+#define PSYCHO_STC_ERR_A	0xb400UL
+#define PSYCHO_STC_ERR_B	0xc400UL
+#define PSYCHO_STC_TAG_A	0xb800UL
+#define PSYCHO_STC_TAG_B	0xc800UL
+#define PSYCHO_STC_LINE_A	0xb900UL
+#define PSYCHO_STC_LINE_B	0xc900UL
+
+/* When an Uncorrectable Error or a PCI Error happens, we
+ * interrogate the IOMMU state to see if it is the cause.
+ */
+#define PSYCHO_IOMMU_CONTROL	0x0200UL
+#define  PSYCHO_IOMMU_CTRL_RESV     0xfffffffff9000000UL /* Reserved                      */
+#define  PSYCHO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status      */
+#define  PSYCHO_IOMMU_CTRL_XLTEERR  0x0000000001000000UL /* Translation Error encountered */
+#define  PSYCHO_IOMMU_CTRL_LCKEN    0x0000000000800000UL /* Enable translation locking    */
+#define  PSYCHO_IOMMU_CTRL_LCKPTR   0x0000000000780000UL /* Translation lock pointer      */
+#define  PSYCHO_IOMMU_CTRL_TSBSZ    0x0000000000070000UL /* TSB Size                      */
+#define  PSYCHO_IOMMU_TSBSZ_1K      0x0000000000000000UL /* TSB Table 1024 8-byte entries */
+#define  PSYCHO_IOMMU_TSBSZ_2K      0x0000000000010000UL /* TSB Table 2048 8-byte entries */
+#define  PSYCHO_IOMMU_TSBSZ_4K      0x0000000000020000UL /* TSB Table 4096 8-byte entries */
+#define  PSYCHO_IOMMU_TSBSZ_8K      0x0000000000030000UL /* TSB Table 8192 8-byte entries */
+#define  PSYCHO_IOMMU_TSBSZ_16K     0x0000000000040000UL /* TSB Table 16k 8-byte entries  */
+#define  PSYCHO_IOMMU_TSBSZ_32K     0x0000000000050000UL /* TSB Table 32k 8-byte entries  */
+#define  PSYCHO_IOMMU_TSBSZ_64K     0x0000000000060000UL /* TSB Table 64k 8-byte entries  */
+#define  PSYCHO_IOMMU_TSBSZ_128K    0x0000000000070000UL /* TSB Table 128k 8-byte entries */
+#define  PSYCHO_IOMMU_CTRL_RESV2    0x000000000000fff8UL /* Reserved                      */
+#define  PSYCHO_IOMMU_CTRL_TBWSZ    0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
+#define  PSYCHO_IOMMU_CTRL_DENAB    0x0000000000000002UL /* Diagnostic mode enable        */
+#define  PSYCHO_IOMMU_CTRL_ENAB     0x0000000000000001UL /* IOMMU Enable                  */
+#define PSYCHO_IOMMU_TSBBASE	0x0208UL
+#define PSYCHO_IOMMU_FLUSH	0x0210UL
+#define PSYCHO_IOMMU_TAG	0xa580UL
+#define PSYCHO_IOMMU_DATA	0xa600UL
+
+/* Uncorrectable Errors.  Cause of the error and the address are
+ * recorded in the UE_AFSR and UE_AFAR of PSYCHO.  They are errors
+ * relating to UPA interface transactions.
+ */
+#define PSYCHO_UE_AFSR	0x0030UL
+#define  PSYCHO_UEAFSR_PPIO	0x8000000000000000UL /* Primary PIO is cause         */
+#define  PSYCHO_UEAFSR_PDRD	0x4000000000000000UL /* Primary DVMA read is cause   */
+#define  PSYCHO_UEAFSR_PDWR	0x2000000000000000UL /* Primary DVMA write is cause  */
+#define  PSYCHO_UEAFSR_SPIO	0x1000000000000000UL /* Secondary PIO is cause       */
+#define  PSYCHO_UEAFSR_SDRD	0x0800000000000000UL /* Secondary DVMA read is cause */
+#define  PSYCHO_UEAFSR_SDWR	0x0400000000000000UL /* Secondary DVMA write is cause*/
+#define  PSYCHO_UEAFSR_RESV1	0x03ff000000000000UL /* Reserved                     */
+#define  PSYCHO_UEAFSR_BMSK	0x0000ffff00000000UL /* Bytemask of failed transfer  */
+#define  PSYCHO_UEAFSR_DOFF	0x00000000e0000000UL /* Doubleword Offset            */
+#define  PSYCHO_UEAFSR_MID	0x000000001f000000UL /* UPA MID causing the fault    */
+#define  PSYCHO_UEAFSR_BLK	0x0000000000800000UL /* Trans was block operation    */
+#define  PSYCHO_UEAFSR_RESV2	0x00000000007fffffUL /* Reserved                     */
+#define PSYCHO_UE_AFAR	0x0038UL
+
+static irqreturn_t psycho_ue_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	unsigned long afsr_reg = pbm->controller_regs + PSYCHO_UE_AFSR;
+	unsigned long afar_reg = pbm->controller_regs + PSYCHO_UE_AFAR;
+	unsigned long afsr, afar, error_bits;
+	int reported;
+
+	/* Latch uncorrectable error status. */
+	afar = upa_readq(afar_reg);
+	afsr = upa_readq(afsr_reg);
+
+	/* Clear the primary/secondary error status bits. */
+	error_bits = afsr &
+		(PSYCHO_UEAFSR_PPIO | PSYCHO_UEAFSR_PDRD | PSYCHO_UEAFSR_PDWR |
+		 PSYCHO_UEAFSR_SPIO | PSYCHO_UEAFSR_SDRD | PSYCHO_UEAFSR_SDWR);
+	if (!error_bits)
+		return IRQ_NONE;
+	upa_writeq(error_bits, afsr_reg);
+
+	/* Log the error. */
+	printk("%s: Uncorrectable Error, primary error type[%s]\n",
+	       pbm->name,
+	       (((error_bits & PSYCHO_UEAFSR_PPIO) ?
+		 "PIO" :
+		 ((error_bits & PSYCHO_UEAFSR_PDRD) ?
+		  "DMA Read" :
+		  ((error_bits & PSYCHO_UEAFSR_PDWR) ?
+		   "DMA Write" : "???")))));
+	printk("%s: bytemask[%04lx] dword_offset[%lx] UPA_MID[%02lx] was_block(%d)\n",
+	       pbm->name,
+	       (afsr & PSYCHO_UEAFSR_BMSK) >> 32UL,
+	       (afsr & PSYCHO_UEAFSR_DOFF) >> 29UL,
+	       (afsr & PSYCHO_UEAFSR_MID) >> 24UL,
+	       ((afsr & PSYCHO_UEAFSR_BLK) ? 1 : 0));
+	printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
+	printk("%s: UE Secondary errors [", pbm->name);
+	reported = 0;
+	if (afsr & PSYCHO_UEAFSR_SPIO) {
+		reported++;
+		printk("(PIO)");
+	}
+	if (afsr & PSYCHO_UEAFSR_SDRD) {
+		reported++;
+		printk("(DMA Read)");
+	}
+	if (afsr & PSYCHO_UEAFSR_SDWR) {
+		reported++;
+		printk("(DMA Write)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	/* Interrogate both IOMMUs for error status. */
+	psycho_check_iommu_error(pbm, afsr, afar, UE_ERR);
+	if (pbm->sibling)
+		psycho_check_iommu_error(pbm->sibling, afsr, afar, UE_ERR);
+
+	return IRQ_HANDLED;
+}
+
+/* Correctable Errors. */
+#define PSYCHO_CE_AFSR	0x0040UL
+#define  PSYCHO_CEAFSR_PPIO	0x8000000000000000UL /* Primary PIO is cause         */
+#define  PSYCHO_CEAFSR_PDRD	0x4000000000000000UL /* Primary DVMA read is cause   */
+#define  PSYCHO_CEAFSR_PDWR	0x2000000000000000UL /* Primary DVMA write is cause  */
+#define  PSYCHO_CEAFSR_SPIO	0x1000000000000000UL /* Secondary PIO is cause       */
+#define  PSYCHO_CEAFSR_SDRD	0x0800000000000000UL /* Secondary DVMA read is cause */
+#define  PSYCHO_CEAFSR_SDWR	0x0400000000000000UL /* Secondary DVMA write is cause*/
+#define  PSYCHO_CEAFSR_RESV1	0x0300000000000000UL /* Reserved                     */
+#define  PSYCHO_CEAFSR_ESYND	0x00ff000000000000UL /* Syndrome Bits                */
+#define  PSYCHO_CEAFSR_BMSK	0x0000ffff00000000UL /* Bytemask of failed transfer  */
+#define  PSYCHO_CEAFSR_DOFF	0x00000000e0000000UL /* Double Offset                */
+#define  PSYCHO_CEAFSR_MID	0x000000001f000000UL /* UPA MID causing the fault    */
+#define  PSYCHO_CEAFSR_BLK	0x0000000000800000UL /* Trans was block operation    */
+#define  PSYCHO_CEAFSR_RESV2	0x00000000007fffffUL /* Reserved                     */
+#define PSYCHO_CE_AFAR	0x0040UL
+
+static irqreturn_t psycho_ce_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	unsigned long afsr_reg = pbm->controller_regs + PSYCHO_CE_AFSR;
+	unsigned long afar_reg = pbm->controller_regs + PSYCHO_CE_AFAR;
+	unsigned long afsr, afar, error_bits;
+	int reported;
+
+	/* Latch error status. */
+	afar = upa_readq(afar_reg);
+	afsr = upa_readq(afsr_reg);
+
+	/* Clear primary/secondary error status bits. */
+	error_bits = afsr &
+		(PSYCHO_CEAFSR_PPIO | PSYCHO_CEAFSR_PDRD | PSYCHO_CEAFSR_PDWR |
+		 PSYCHO_CEAFSR_SPIO | PSYCHO_CEAFSR_SDRD | PSYCHO_CEAFSR_SDWR);
+	if (!error_bits)
+		return IRQ_NONE;
+	upa_writeq(error_bits, afsr_reg);
+
+	/* Log the error. */
+	printk("%s: Correctable Error, primary error type[%s]\n",
+	       pbm->name,
+	       (((error_bits & PSYCHO_CEAFSR_PPIO) ?
+		 "PIO" :
+		 ((error_bits & PSYCHO_CEAFSR_PDRD) ?
+		  "DMA Read" :
+		  ((error_bits & PSYCHO_CEAFSR_PDWR) ?
+		   "DMA Write" : "???")))));
+
+	/* XXX Use syndrome and afar to print out module string just like
+	 * XXX UDB CE trap handler does... -DaveM
+	 */
+	printk("%s: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] "
+	       "UPA_MID[%02lx] was_block(%d)\n",
+	       pbm->name,
+	       (afsr & PSYCHO_CEAFSR_ESYND) >> 48UL,
+	       (afsr & PSYCHO_CEAFSR_BMSK) >> 32UL,
+	       (afsr & PSYCHO_CEAFSR_DOFF) >> 29UL,
+	       (afsr & PSYCHO_CEAFSR_MID) >> 24UL,
+	       ((afsr & PSYCHO_CEAFSR_BLK) ? 1 : 0));
+	printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
+	printk("%s: CE Secondary errors [", pbm->name);
+	reported = 0;
+	if (afsr & PSYCHO_CEAFSR_SPIO) {
+		reported++;
+		printk("(PIO)");
+	}
+	if (afsr & PSYCHO_CEAFSR_SDRD) {
+		reported++;
+		printk("(DMA Read)");
+	}
+	if (afsr & PSYCHO_CEAFSR_SDWR) {
+		reported++;
+		printk("(DMA Write)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	return IRQ_HANDLED;
+}
+
+/* PCI Errors.  They are signalled by the PCI bus module since they
+ * are associated with a specific bus segment.
+ */
+#define PSYCHO_PCI_AFSR_A	0x2010UL
+#define PSYCHO_PCI_AFSR_B	0x4010UL
+#define PSYCHO_PCI_AFAR_A	0x2018UL
+#define PSYCHO_PCI_AFAR_B	0x4018UL
+
+/* XXX What about PowerFail/PowerManagement??? -DaveM */
+#define PSYCHO_ECC_CTRL		0x0020
+#define  PSYCHO_ECCCTRL_EE	 0x8000000000000000UL /* Enable ECC Checking */
+#define  PSYCHO_ECCCTRL_UE	 0x4000000000000000UL /* Enable UE Interrupts */
+#define  PSYCHO_ECCCTRL_CE	 0x2000000000000000UL /* Enable CE INterrupts */
+static void psycho_register_error_handlers(struct pci_pbm_info *pbm)
+{
+	struct of_device *op = of_find_device_by_node(pbm->op->node);
+	unsigned long base = pbm->controller_regs;
+	u64 tmp;
+	int err;
+
+	if (!op)
+		return;
+
+	/* Psycho interrupt property order is:
+	 * 0: PCIERR INO for this PBM
+	 * 1: UE ERR
+	 * 2: CE ERR
+	 * 3: POWER FAIL
+	 * 4: SPARE HARDWARE
+	 * 5: POWER MANAGEMENT
+	 */
+
+	if (op->num_irqs < 6)
+		return;
+
+	/* We really mean to ignore the return result here.  Two
+	 * PCI controller share the same interrupt numbers and
+	 * drive the same front-end hardware.  Whichever of the
+	 * two get in here first will register the IRQ handler
+	 * the second will just error out since we do not pass in
+	 * IRQF_SHARED.
+	 */
+	err = request_irq(op->irqs[1], psycho_ue_intr, IRQF_SHARED,
+			  "PSYCHO_UE", pbm);
+	err = request_irq(op->irqs[2], psycho_ce_intr, IRQF_SHARED,
+			  "PSYCHO_CE", pbm);
+
+	/* This one, however, ought not to fail.  We can just warn
+	 * about it since the system can still operate properly even
+	 * if this fails.
+	 */
+	err = request_irq(op->irqs[0], psycho_pcierr_intr, IRQF_SHARED,
+			  "PSYCHO_PCIERR", pbm);
+	if (err)
+		printk(KERN_WARNING "%s: Could not register PCIERR, "
+		       "err=%d\n", pbm->name, err);
+
+	/* Enable UE and CE interrupts for controller. */
+	upa_writeq((PSYCHO_ECCCTRL_EE |
+		    PSYCHO_ECCCTRL_UE |
+		    PSYCHO_ECCCTRL_CE), base + PSYCHO_ECC_CTRL);
+
+	/* Enable PCI Error interrupts and clear error
+	 * bits for each PBM.
+	 */
+	tmp = upa_readq(base + PSYCHO_PCIA_CTRL);
+	tmp |= (PSYCHO_PCICTRL_SERR |
+		PSYCHO_PCICTRL_SBH_ERR |
+		PSYCHO_PCICTRL_EEN);
+	tmp &= ~(PSYCHO_PCICTRL_SBH_INT);
+	upa_writeq(tmp, base + PSYCHO_PCIA_CTRL);
+		     
+	tmp = upa_readq(base + PSYCHO_PCIB_CTRL);
+	tmp |= (PSYCHO_PCICTRL_SERR |
+		PSYCHO_PCICTRL_SBH_ERR |
+		PSYCHO_PCICTRL_EEN);
+	tmp &= ~(PSYCHO_PCICTRL_SBH_INT);
+	upa_writeq(tmp, base + PSYCHO_PCIB_CTRL);
+}
+
+/* PSYCHO boot time probing and initialization. */
+static void pbm_config_busmastering(struct pci_pbm_info *pbm)
+{
+	u8 *addr;
+
+	/* Set cache-line size to 64 bytes, this is actually
+	 * a nop but I do it for completeness.
+	 */
+	addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
+					0, PCI_CACHE_LINE_SIZE);
+	pci_config_write8(addr, 64 / sizeof(u32));
+
+	/* Set PBM latency timer to 64 PCI clocks. */
+	addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
+					0, PCI_LATENCY_TIMER);
+	pci_config_write8(addr, 64);
+}
+
+static void __init psycho_scan_bus(struct pci_pbm_info *pbm,
+				   struct device *parent)
+{
+	pbm_config_busmastering(pbm);
+	pbm->is_66mhz_capable = 0;
+	pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
+
+	/* After the PCI bus scan is complete, we can register
+	 * the error interrupt handlers.
+	 */
+	psycho_register_error_handlers(pbm);
+}
+
+#define PSYCHO_IRQ_RETRY	0x1a00UL
+#define PSYCHO_PCIA_DIAG	0x2020UL
+#define PSYCHO_PCIB_DIAG	0x4020UL
+#define  PSYCHO_PCIDIAG_RESV	 0xffffffffffffff80UL /* Reserved                     */
+#define  PSYCHO_PCIDIAG_DRETRY	 0x0000000000000040UL /* Disable retry limit          */
+#define  PSYCHO_PCIDIAG_DISYNC	 0x0000000000000020UL /* Disable DMA wr / irq sync    */
+#define  PSYCHO_PCIDIAG_DDWSYNC	 0x0000000000000010UL /* Disable DMA wr / PIO rd sync */
+#define  PSYCHO_PCIDIAG_IDDPAR	 0x0000000000000008UL /* Invert DMA data parity       */
+#define  PSYCHO_PCIDIAG_IPDPAR	 0x0000000000000004UL /* Invert PIO data parity       */
+#define  PSYCHO_PCIDIAG_IPAPAR	 0x0000000000000002UL /* Invert PIO address parity    */
+#define  PSYCHO_PCIDIAG_LPBACK	 0x0000000000000001UL /* Enable loopback mode         */
+
+static void psycho_controller_hwinit(struct pci_pbm_info *pbm)
+{
+	u64 tmp;
+
+	upa_writeq(5, pbm->controller_regs + PSYCHO_IRQ_RETRY);
+
+	/* Enable arbiter for all PCI slots. */
+	tmp = upa_readq(pbm->controller_regs + PSYCHO_PCIA_CTRL);
+	tmp |= PSYCHO_PCICTRL_AEN;
+	upa_writeq(tmp, pbm->controller_regs + PSYCHO_PCIA_CTRL);
+
+	tmp = upa_readq(pbm->controller_regs + PSYCHO_PCIB_CTRL);
+	tmp |= PSYCHO_PCICTRL_AEN;
+	upa_writeq(tmp, pbm->controller_regs + PSYCHO_PCIB_CTRL);
+
+	/* Disable DMA write / PIO read synchronization on
+	 * both PCI bus segments.
+	 * [ U2P Erratum 1243770, STP2223BGA data sheet ]
+	 */
+	tmp = upa_readq(pbm->controller_regs + PSYCHO_PCIA_DIAG);
+	tmp |= PSYCHO_PCIDIAG_DDWSYNC;
+	upa_writeq(tmp, pbm->controller_regs + PSYCHO_PCIA_DIAG);
+
+	tmp = upa_readq(pbm->controller_regs + PSYCHO_PCIB_DIAG);
+	tmp |= PSYCHO_PCIDIAG_DDWSYNC;
+	upa_writeq(tmp, pbm->controller_regs + PSYCHO_PCIB_DIAG);
+}
+
+static void psycho_pbm_strbuf_init(struct pci_pbm_info *pbm,
+				   int is_pbm_a)
+{
+	unsigned long base = pbm->controller_regs;
+	u64 control;
+
+	if (is_pbm_a) {
+		pbm->stc.strbuf_control  = base + PSYCHO_STRBUF_CONTROL_A;
+		pbm->stc.strbuf_pflush   = base + PSYCHO_STRBUF_FLUSH_A;
+		pbm->stc.strbuf_fsync    = base + PSYCHO_STRBUF_FSYNC_A;
+		pbm->stc.strbuf_err_stat = base + PSYCHO_STC_ERR_A;
+		pbm->stc.strbuf_tag_diag = base + PSYCHO_STC_TAG_A;
+		pbm->stc.strbuf_line_diag= base + PSYCHO_STC_LINE_A;
+	} else {
+		pbm->stc.strbuf_control  = base + PSYCHO_STRBUF_CONTROL_B;
+		pbm->stc.strbuf_pflush   = base + PSYCHO_STRBUF_FLUSH_B;
+		pbm->stc.strbuf_fsync    = base + PSYCHO_STRBUF_FSYNC_B;
+		pbm->stc.strbuf_err_stat = base + PSYCHO_STC_ERR_B;
+		pbm->stc.strbuf_tag_diag = base + PSYCHO_STC_TAG_B;
+		pbm->stc.strbuf_line_diag= base + PSYCHO_STC_LINE_B;
+	}
+	/* PSYCHO's streaming buffer lacks ctx flushing. */
+	pbm->stc.strbuf_ctxflush      = 0;
+	pbm->stc.strbuf_ctxmatch_base = 0;
+
+	pbm->stc.strbuf_flushflag = (volatile unsigned long *)
+		((((unsigned long)&pbm->stc.__flushflag_buf[0])
+		  + 63UL)
+		 & ~63UL);
+	pbm->stc.strbuf_flushflag_pa = (unsigned long)
+		__pa(pbm->stc.strbuf_flushflag);
+
+	/* Enable the streaming buffer.  We have to be careful
+	 * just in case OBP left it with LRU locking enabled.
+	 *
+	 * It is possible to control if PBM will be rerun on
+	 * line misses.  Currently I just retain whatever setting
+	 * OBP left us with.  All checks so far show it having
+	 * a value of zero.
+	 */
+#undef PSYCHO_STRBUF_RERUN_ENABLE
+#undef PSYCHO_STRBUF_RERUN_DISABLE
+	control = upa_readq(pbm->stc.strbuf_control);
+	control |= PSYCHO_STRBUF_CTRL_ENAB;
+	control &= ~(PSYCHO_STRBUF_CTRL_LENAB | PSYCHO_STRBUF_CTRL_LPTR);
+#ifdef PSYCHO_STRBUF_RERUN_ENABLE
+	control &= ~(PSYCHO_STRBUF_CTRL_RRDIS);
+#else
+#ifdef PSYCHO_STRBUF_RERUN_DISABLE
+	control |= PSYCHO_STRBUF_CTRL_RRDIS;
+#endif
+#endif
+	upa_writeq(control, pbm->stc.strbuf_control);
+
+	pbm->stc.strbuf_enabled = 1;
+}
+
+#define PSYCHO_IOSPACE_A	0x002000000UL
+#define PSYCHO_IOSPACE_B	0x002010000UL
+#define PSYCHO_IOSPACE_SIZE	0x00000ffffUL
+#define PSYCHO_MEMSPACE_A	0x100000000UL
+#define PSYCHO_MEMSPACE_B	0x180000000UL
+#define PSYCHO_MEMSPACE_SIZE	0x07fffffffUL
+
+static void __init psycho_pbm_init(struct pci_pbm_info *pbm,
+				   struct of_device *op, int is_pbm_a)
+{
+	psycho_pbm_init_common(pbm, op, "PSYCHO", PBM_CHIP_TYPE_PSYCHO);
+	psycho_pbm_strbuf_init(pbm, is_pbm_a);
+	psycho_scan_bus(pbm, &op->dev);
+}
+
+static struct pci_pbm_info * __devinit psycho_find_sibling(u32 upa_portid)
+{
+	struct pci_pbm_info *pbm;
+
+	for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
+		if (pbm->portid == upa_portid)
+			return pbm;
+	}
+	return NULL;
+}
+
+#define PSYCHO_CONFIGSPACE	0x001000000UL
+
+static int __devinit psycho_probe(struct of_device *op,
+				  const struct of_device_id *match)
+{
+	const struct linux_prom64_registers *pr_regs;
+	struct device_node *dp = op->node;
+	struct pci_pbm_info *pbm;
+	struct iommu *iommu;
+	int is_pbm_a, err;
+	u32 upa_portid;
+
+	upa_portid = of_getintprop_default(dp, "upa-portid", 0xff);
+
+	err = -ENOMEM;
+	pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
+	if (!pbm) {
+		printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
+		goto out_err;
+	}
+
+	pbm->sibling = psycho_find_sibling(upa_portid);
+	if (pbm->sibling) {
+		iommu = pbm->sibling->iommu;
+	} else {
+		iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
+		if (!iommu) {
+			printk(KERN_ERR PFX "Cannot allocate PBM iommu.\n");
+			goto out_free_controller;
+		}
+	}
+
+	pbm->iommu = iommu;
+	pbm->portid = upa_portid;
+
+	pr_regs = of_get_property(dp, "reg", NULL);
+	err = -ENODEV;
+	if (!pr_regs) {
+		printk(KERN_ERR PFX "No reg property.\n");
+		goto out_free_iommu;
+	}
+
+	is_pbm_a = ((pr_regs[0].phys_addr & 0x6000) == 0x2000);
+
+	pbm->controller_regs = pr_regs[2].phys_addr;
+	pbm->config_space = (pr_regs[2].phys_addr + PSYCHO_CONFIGSPACE);
+
+	if (is_pbm_a) {
+		pbm->pci_afsr = pbm->controller_regs + PSYCHO_PCI_AFSR_A;
+		pbm->pci_afar = pbm->controller_regs + PSYCHO_PCI_AFAR_A;
+		pbm->pci_csr  = pbm->controller_regs + PSYCHO_PCIA_CTRL;
+	} else {
+		pbm->pci_afsr = pbm->controller_regs + PSYCHO_PCI_AFSR_B;
+		pbm->pci_afar = pbm->controller_regs + PSYCHO_PCI_AFAR_B;
+		pbm->pci_csr  = pbm->controller_regs + PSYCHO_PCIB_CTRL;
+	}
+
+	psycho_controller_hwinit(pbm);
+	if (!pbm->sibling) {
+		err = psycho_iommu_init(pbm, 128, 0xc0000000,
+					0xffffffff, PSYCHO_CONTROL);
+		if (err)
+			goto out_free_iommu;
+
+		/* If necessary, hook us up for starfire IRQ translations. */
+		if (this_is_starfire)
+			starfire_hookup(pbm->portid);
+	}
+
+	psycho_pbm_init(pbm, op, is_pbm_a);
+
+	pbm->next = pci_pbm_root;
+	pci_pbm_root = pbm;
+
+	if (pbm->sibling)
+		pbm->sibling->sibling = pbm;
+
+	dev_set_drvdata(&op->dev, pbm);
+
+	return 0;
+
+out_free_iommu:
+	if (!pbm->sibling)
+		kfree(pbm->iommu);
+
+out_free_controller:
+	kfree(pbm);
+
+out_err:
+	return err;
+}
+
+static struct of_device_id __initdata psycho_match[] = {
+	{
+		.name = "pci",
+		.compatible = "pci108e,8000",
+	},
+	{},
+};
+
+static struct of_platform_driver psycho_driver = {
+	.name		= DRIVER_NAME,
+	.match_table	= psycho_match,
+	.probe		= psycho_probe,
+};
+
+static int __init psycho_init(void)
+{
+	return of_register_driver(&psycho_driver, &of_bus_type);
+}
+
+subsys_initcall(psycho_init);
diff --git a/arch/sparc/kernel/pci_sabre.c b/arch/sparc/kernel/pci_sabre.c
new file mode 100644
index 000000000000..713257b6963c
--- /dev/null
+++ b/arch/sparc/kernel/pci_sabre.c
@@ -0,0 +1,609 @@
+/* pci_sabre.c: Sabre specific PCI controller support.
+ *
+ * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1998, 1999 Eddie C. Dost   (ecd@skynet.be)
+ * Copyright (C) 1999 Jakub Jelinek   (jakub@redhat.com)
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/of_device.h>
+
+#include <asm/apb.h>
+#include <asm/iommu.h>
+#include <asm/irq.h>
+#include <asm/prom.h>
+#include <asm/upa.h>
+
+#include "pci_impl.h"
+#include "iommu_common.h"
+#include "psycho_common.h"
+
+#define DRIVER_NAME	"sabre"
+#define PFX		DRIVER_NAME ": "
+
+/* SABRE PCI controller register offsets and definitions. */
+#define SABRE_UE_AFSR		0x0030UL
+#define  SABRE_UEAFSR_PDRD	 0x4000000000000000UL	/* Primary PCI DMA Read */
+#define  SABRE_UEAFSR_PDWR	 0x2000000000000000UL	/* Primary PCI DMA Write */
+#define  SABRE_UEAFSR_SDRD	 0x0800000000000000UL	/* Secondary PCI DMA Read */
+#define  SABRE_UEAFSR_SDWR	 0x0400000000000000UL	/* Secondary PCI DMA Write */
+#define  SABRE_UEAFSR_SDTE	 0x0200000000000000UL	/* Secondary DMA Translation Error */
+#define  SABRE_UEAFSR_PDTE	 0x0100000000000000UL	/* Primary DMA Translation Error */
+#define  SABRE_UEAFSR_BMSK	 0x0000ffff00000000UL	/* Bytemask */
+#define  SABRE_UEAFSR_OFF	 0x00000000e0000000UL	/* Offset (AFAR bits [5:3] */
+#define  SABRE_UEAFSR_BLK	 0x0000000000800000UL	/* Was block operation */
+#define SABRE_UECE_AFAR		0x0038UL
+#define SABRE_CE_AFSR		0x0040UL
+#define  SABRE_CEAFSR_PDRD	 0x4000000000000000UL	/* Primary PCI DMA Read */
+#define  SABRE_CEAFSR_PDWR	 0x2000000000000000UL	/* Primary PCI DMA Write */
+#define  SABRE_CEAFSR_SDRD	 0x0800000000000000UL	/* Secondary PCI DMA Read */
+#define  SABRE_CEAFSR_SDWR	 0x0400000000000000UL	/* Secondary PCI DMA Write */
+#define  SABRE_CEAFSR_ESYND	 0x00ff000000000000UL	/* ECC Syndrome */
+#define  SABRE_CEAFSR_BMSK	 0x0000ffff00000000UL	/* Bytemask */
+#define  SABRE_CEAFSR_OFF	 0x00000000e0000000UL	/* Offset */
+#define  SABRE_CEAFSR_BLK	 0x0000000000800000UL	/* Was block operation */
+#define SABRE_UECE_AFAR_ALIAS	0x0048UL	/* Aliases to 0x0038 */
+#define SABRE_IOMMU_CONTROL	0x0200UL
+#define  SABRE_IOMMUCTRL_ERRSTS	 0x0000000006000000UL	/* Error status bits */
+#define  SABRE_IOMMUCTRL_ERR	 0x0000000001000000UL	/* Error present in IOTLB */
+#define  SABRE_IOMMUCTRL_LCKEN	 0x0000000000800000UL	/* IOTLB lock enable */
+#define  SABRE_IOMMUCTRL_LCKPTR	 0x0000000000780000UL	/* IOTLB lock pointer */
+#define  SABRE_IOMMUCTRL_TSBSZ	 0x0000000000070000UL	/* TSB Size */
+#define  SABRE_IOMMU_TSBSZ_1K   0x0000000000000000
+#define  SABRE_IOMMU_TSBSZ_2K   0x0000000000010000
+#define  SABRE_IOMMU_TSBSZ_4K   0x0000000000020000
+#define  SABRE_IOMMU_TSBSZ_8K   0x0000000000030000
+#define  SABRE_IOMMU_TSBSZ_16K  0x0000000000040000
+#define  SABRE_IOMMU_TSBSZ_32K  0x0000000000050000
+#define  SABRE_IOMMU_TSBSZ_64K  0x0000000000060000
+#define  SABRE_IOMMU_TSBSZ_128K 0x0000000000070000
+#define  SABRE_IOMMUCTRL_TBWSZ	 0x0000000000000004UL	/* TSB assumed page size */
+#define  SABRE_IOMMUCTRL_DENAB	 0x0000000000000002UL	/* Diagnostic Mode Enable */
+#define  SABRE_IOMMUCTRL_ENAB	 0x0000000000000001UL	/* IOMMU Enable */
+#define SABRE_IOMMU_TSBBASE	0x0208UL
+#define SABRE_IOMMU_FLUSH	0x0210UL
+#define SABRE_IMAP_A_SLOT0	0x0c00UL
+#define SABRE_IMAP_B_SLOT0	0x0c20UL
+#define SABRE_IMAP_SCSI		0x1000UL
+#define SABRE_IMAP_ETH		0x1008UL
+#define SABRE_IMAP_BPP		0x1010UL
+#define SABRE_IMAP_AU_REC	0x1018UL
+#define SABRE_IMAP_AU_PLAY	0x1020UL
+#define SABRE_IMAP_PFAIL	0x1028UL
+#define SABRE_IMAP_KMS		0x1030UL
+#define SABRE_IMAP_FLPY		0x1038UL
+#define SABRE_IMAP_SHW		0x1040UL
+#define SABRE_IMAP_KBD		0x1048UL
+#define SABRE_IMAP_MS		0x1050UL
+#define SABRE_IMAP_SER		0x1058UL
+#define SABRE_IMAP_UE		0x1070UL
+#define SABRE_IMAP_CE		0x1078UL
+#define SABRE_IMAP_PCIERR	0x1080UL
+#define SABRE_IMAP_GFX		0x1098UL
+#define SABRE_IMAP_EUPA		0x10a0UL
+#define SABRE_ICLR_A_SLOT0	0x1400UL
+#define SABRE_ICLR_B_SLOT0	0x1480UL
+#define SABRE_ICLR_SCSI		0x1800UL
+#define SABRE_ICLR_ETH		0x1808UL
+#define SABRE_ICLR_BPP		0x1810UL
+#define SABRE_ICLR_AU_REC	0x1818UL
+#define SABRE_ICLR_AU_PLAY	0x1820UL
+#define SABRE_ICLR_PFAIL	0x1828UL
+#define SABRE_ICLR_KMS		0x1830UL
+#define SABRE_ICLR_FLPY		0x1838UL
+#define SABRE_ICLR_SHW		0x1840UL
+#define SABRE_ICLR_KBD		0x1848UL
+#define SABRE_ICLR_MS		0x1850UL
+#define SABRE_ICLR_SER		0x1858UL
+#define SABRE_ICLR_UE		0x1870UL
+#define SABRE_ICLR_CE		0x1878UL
+#define SABRE_ICLR_PCIERR	0x1880UL
+#define SABRE_WRSYNC		0x1c20UL
+#define SABRE_PCICTRL		0x2000UL
+#define  SABRE_PCICTRL_MRLEN	 0x0000001000000000UL	/* Use MemoryReadLine for block loads/stores */
+#define  SABRE_PCICTRL_SERR	 0x0000000400000000UL	/* Set when SERR asserted on PCI bus */
+#define  SABRE_PCICTRL_ARBPARK	 0x0000000000200000UL	/* Bus Parking 0=Ultra-IIi 1=prev-bus-owner */
+#define  SABRE_PCICTRL_CPUPRIO	 0x0000000000100000UL	/* Ultra-IIi granted every other bus cycle */
+#define  SABRE_PCICTRL_ARBPRIO	 0x00000000000f0000UL	/* Slot which is granted every other bus cycle */
+#define  SABRE_PCICTRL_ERREN	 0x0000000000000100UL	/* PCI Error Interrupt Enable */
+#define  SABRE_PCICTRL_RTRYWE	 0x0000000000000080UL	/* DMA Flow Control 0=wait-if-possible 1=retry */
+#define  SABRE_PCICTRL_AEN	 0x000000000000000fUL	/* Slot PCI arbitration enables */
+#define SABRE_PIOAFSR		0x2010UL
+#define  SABRE_PIOAFSR_PMA	 0x8000000000000000UL	/* Primary Master Abort */
+#define  SABRE_PIOAFSR_PTA	 0x4000000000000000UL	/* Primary Target Abort */
+#define  SABRE_PIOAFSR_PRTRY	 0x2000000000000000UL	/* Primary Excessive Retries */
+#define  SABRE_PIOAFSR_PPERR	 0x1000000000000000UL	/* Primary Parity Error */
+#define  SABRE_PIOAFSR_SMA	 0x0800000000000000UL	/* Secondary Master Abort */
+#define  SABRE_PIOAFSR_STA	 0x0400000000000000UL	/* Secondary Target Abort */
+#define  SABRE_PIOAFSR_SRTRY	 0x0200000000000000UL	/* Secondary Excessive Retries */
+#define  SABRE_PIOAFSR_SPERR	 0x0100000000000000UL	/* Secondary Parity Error */
+#define  SABRE_PIOAFSR_BMSK	 0x0000ffff00000000UL	/* Byte Mask */
+#define  SABRE_PIOAFSR_BLK	 0x0000000080000000UL	/* Was Block Operation */
+#define SABRE_PIOAFAR		0x2018UL
+#define SABRE_PCIDIAG		0x2020UL
+#define  SABRE_PCIDIAG_DRTRY	 0x0000000000000040UL	/* Disable PIO Retry Limit */
+#define  SABRE_PCIDIAG_IPAPAR	 0x0000000000000008UL	/* Invert PIO Address Parity */
+#define  SABRE_PCIDIAG_IPDPAR	 0x0000000000000004UL	/* Invert PIO Data Parity */
+#define  SABRE_PCIDIAG_IDDPAR	 0x0000000000000002UL	/* Invert DMA Data Parity */
+#define  SABRE_PCIDIAG_ELPBK	 0x0000000000000001UL	/* Loopback Enable - not supported */
+#define SABRE_PCITASR		0x2028UL
+#define  SABRE_PCITASR_EF	 0x0000000000000080UL	/* Respond to 0xe0000000-0xffffffff */
+#define  SABRE_PCITASR_CD	 0x0000000000000040UL	/* Respond to 0xc0000000-0xdfffffff */
+#define  SABRE_PCITASR_AB	 0x0000000000000020UL	/* Respond to 0xa0000000-0xbfffffff */
+#define  SABRE_PCITASR_89	 0x0000000000000010UL	/* Respond to 0x80000000-0x9fffffff */
+#define  SABRE_PCITASR_67	 0x0000000000000008UL	/* Respond to 0x60000000-0x7fffffff */
+#define  SABRE_PCITASR_45	 0x0000000000000004UL	/* Respond to 0x40000000-0x5fffffff */
+#define  SABRE_PCITASR_23	 0x0000000000000002UL	/* Respond to 0x20000000-0x3fffffff */
+#define  SABRE_PCITASR_01	 0x0000000000000001UL	/* Respond to 0x00000000-0x1fffffff */
+#define SABRE_PIOBUF_DIAG	0x5000UL
+#define SABRE_DMABUF_DIAGLO	0x5100UL
+#define SABRE_DMABUF_DIAGHI	0x51c0UL
+#define SABRE_IMAP_GFX_ALIAS	0x6000UL	/* Aliases to 0x1098 */
+#define SABRE_IMAP_EUPA_ALIAS	0x8000UL	/* Aliases to 0x10a0 */
+#define SABRE_IOMMU_VADIAG	0xa400UL
+#define SABRE_IOMMU_TCDIAG	0xa408UL
+#define SABRE_IOMMU_TAG		0xa580UL
+#define  SABRE_IOMMUTAG_ERRSTS	 0x0000000001800000UL	/* Error status bits */
+#define  SABRE_IOMMUTAG_ERR	 0x0000000000400000UL	/* Error present */
+#define  SABRE_IOMMUTAG_WRITE	 0x0000000000200000UL	/* Page is writable */
+#define  SABRE_IOMMUTAG_STREAM	 0x0000000000100000UL	/* Streamable bit - unused */
+#define  SABRE_IOMMUTAG_SIZE	 0x0000000000080000UL	/* 0=8k 1=16k */
+#define  SABRE_IOMMUTAG_VPN	 0x000000000007ffffUL	/* Virtual Page Number [31:13] */
+#define SABRE_IOMMU_DATA	0xa600UL
+#define SABRE_IOMMUDATA_VALID	 0x0000000040000000UL	/* Valid */
+#define SABRE_IOMMUDATA_USED	 0x0000000020000000UL	/* Used (for LRU algorithm) */
+#define SABRE_IOMMUDATA_CACHE	 0x0000000010000000UL	/* Cacheable */
+#define SABRE_IOMMUDATA_PPN	 0x00000000001fffffUL	/* Physical Page Number [33:13] */
+#define SABRE_PCI_IRQSTATE	0xa800UL
+#define SABRE_OBIO_IRQSTATE	0xa808UL
+#define SABRE_FFBCFG		0xf000UL
+#define  SABRE_FFBCFG_SPRQS	 0x000000000f000000	/* Slave P_RQST queue size */
+#define  SABRE_FFBCFG_ONEREAD	 0x0000000000004000	/* Slave supports one outstanding read */
+#define SABRE_MCCTRL0		0xf010UL
+#define  SABRE_MCCTRL0_RENAB	 0x0000000080000000	/* Refresh Enable */
+#define  SABRE_MCCTRL0_EENAB	 0x0000000010000000	/* Enable all ECC functions */
+#define  SABRE_MCCTRL0_11BIT	 0x0000000000001000	/* Enable 11-bit column addressing */
+#define  SABRE_MCCTRL0_DPP	 0x0000000000000f00	/* DIMM Pair Present Bits */
+#define  SABRE_MCCTRL0_RINTVL	 0x00000000000000ff	/* Refresh Interval */
+#define SABRE_MCCTRL1		0xf018UL
+#define  SABRE_MCCTRL1_AMDC	 0x0000000038000000	/* Advance Memdata Clock */
+#define  SABRE_MCCTRL1_ARDC	 0x0000000007000000	/* Advance DRAM Read Data Clock */
+#define  SABRE_MCCTRL1_CSR	 0x0000000000e00000	/* CAS to RAS delay for CBR refresh */
+#define  SABRE_MCCTRL1_CASRW	 0x00000000001c0000	/* CAS length for read/write */
+#define  SABRE_MCCTRL1_RCD	 0x0000000000038000	/* RAS to CAS delay */
+#define  SABRE_MCCTRL1_CP	 0x0000000000007000	/* CAS Precharge */
+#define  SABRE_MCCTRL1_RP	 0x0000000000000e00	/* RAS Precharge */
+#define  SABRE_MCCTRL1_RAS	 0x00000000000001c0	/* Length of RAS for refresh */
+#define  SABRE_MCCTRL1_CASRW2	 0x0000000000000038	/* Must be same as CASRW */
+#define  SABRE_MCCTRL1_RSC	 0x0000000000000007	/* RAS after CAS hold time */
+#define SABRE_RESETCTRL		0xf020UL
+
+#define SABRE_CONFIGSPACE	0x001000000UL
+#define SABRE_IOSPACE		0x002000000UL
+#define SABRE_IOSPACE_SIZE	0x000ffffffUL
+#define SABRE_MEMSPACE		0x100000000UL
+#define SABRE_MEMSPACE_SIZE	0x07fffffffUL
+
+static int hummingbird_p;
+static struct pci_bus *sabre_root_bus;
+
+static irqreturn_t sabre_ue_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	unsigned long afsr_reg = pbm->controller_regs + SABRE_UE_AFSR;
+	unsigned long afar_reg = pbm->controller_regs + SABRE_UECE_AFAR;
+	unsigned long afsr, afar, error_bits;
+	int reported;
+
+	/* Latch uncorrectable error status. */
+	afar = upa_readq(afar_reg);
+	afsr = upa_readq(afsr_reg);
+
+	/* Clear the primary/secondary error status bits. */
+	error_bits = afsr &
+		(SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR |
+		 SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR |
+		 SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE);
+	if (!error_bits)
+		return IRQ_NONE;
+	upa_writeq(error_bits, afsr_reg);
+
+	/* Log the error. */
+	printk("%s: Uncorrectable Error, primary error type[%s%s]\n",
+	       pbm->name,
+	       ((error_bits & SABRE_UEAFSR_PDRD) ?
+		"DMA Read" :
+		((error_bits & SABRE_UEAFSR_PDWR) ?
+		 "DMA Write" : "???")),
+	       ((error_bits & SABRE_UEAFSR_PDTE) ?
+		":Translation Error" : ""));
+	printk("%s: bytemask[%04lx] dword_offset[%lx] was_block(%d)\n",
+	       pbm->name,
+	       (afsr & SABRE_UEAFSR_BMSK) >> 32UL,
+	       (afsr & SABRE_UEAFSR_OFF) >> 29UL,
+	       ((afsr & SABRE_UEAFSR_BLK) ? 1 : 0));
+	printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
+	printk("%s: UE Secondary errors [", pbm->name);
+	reported = 0;
+	if (afsr & SABRE_UEAFSR_SDRD) {
+		reported++;
+		printk("(DMA Read)");
+	}
+	if (afsr & SABRE_UEAFSR_SDWR) {
+		reported++;
+		printk("(DMA Write)");
+	}
+	if (afsr & SABRE_UEAFSR_SDTE) {
+		reported++;
+		printk("(Translation Error)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	/* Interrogate IOMMU for error status. */
+	psycho_check_iommu_error(pbm, afsr, afar, UE_ERR);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t sabre_ce_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	unsigned long afsr_reg = pbm->controller_regs + SABRE_CE_AFSR;
+	unsigned long afar_reg = pbm->controller_regs + SABRE_UECE_AFAR;
+	unsigned long afsr, afar, error_bits;
+	int reported;
+
+	/* Latch error status. */
+	afar = upa_readq(afar_reg);
+	afsr = upa_readq(afsr_reg);
+
+	/* Clear primary/secondary error status bits. */
+	error_bits = afsr &
+		(SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR |
+		 SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR);
+	if (!error_bits)
+		return IRQ_NONE;
+	upa_writeq(error_bits, afsr_reg);
+
+	/* Log the error. */
+	printk("%s: Correctable Error, primary error type[%s]\n",
+	       pbm->name,
+	       ((error_bits & SABRE_CEAFSR_PDRD) ?
+		"DMA Read" :
+		((error_bits & SABRE_CEAFSR_PDWR) ?
+		 "DMA Write" : "???")));
+
+	/* XXX Use syndrome and afar to print out module string just like
+	 * XXX UDB CE trap handler does... -DaveM
+	 */
+	printk("%s: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] "
+	       "was_block(%d)\n",
+	       pbm->name,
+	       (afsr & SABRE_CEAFSR_ESYND) >> 48UL,
+	       (afsr & SABRE_CEAFSR_BMSK) >> 32UL,
+	       (afsr & SABRE_CEAFSR_OFF) >> 29UL,
+	       ((afsr & SABRE_CEAFSR_BLK) ? 1 : 0));
+	printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
+	printk("%s: CE Secondary errors [", pbm->name);
+	reported = 0;
+	if (afsr & SABRE_CEAFSR_SDRD) {
+		reported++;
+		printk("(DMA Read)");
+	}
+	if (afsr & SABRE_CEAFSR_SDWR) {
+		reported++;
+		printk("(DMA Write)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	return IRQ_HANDLED;
+}
+
+static void sabre_register_error_handlers(struct pci_pbm_info *pbm)
+{
+	struct device_node *dp = pbm->op->node;
+	struct of_device *op;
+	unsigned long base = pbm->controller_regs;
+	u64 tmp;
+	int err;
+
+	if (pbm->chip_type == PBM_CHIP_TYPE_SABRE)
+		dp = dp->parent;
+
+	op = of_find_device_by_node(dp);
+	if (!op)
+		return;
+
+	/* Sabre/Hummingbird IRQ property layout is:
+	 * 0: PCI ERR
+	 * 1: UE ERR
+	 * 2: CE ERR
+	 * 3: POWER FAIL
+	 */
+	if (op->num_irqs < 4)
+		return;
+
+	/* We clear the error bits in the appropriate AFSR before
+	 * registering the handler so that we don't get spurious
+	 * interrupts.
+	 */
+	upa_writeq((SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR |
+		    SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR |
+		    SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE),
+		   base + SABRE_UE_AFSR);
+
+	err = request_irq(op->irqs[1], sabre_ue_intr, 0, "SABRE_UE", pbm);
+	if (err)
+		printk(KERN_WARNING "%s: Couldn't register UE, err=%d.\n",
+		       pbm->name, err);
+
+	upa_writeq((SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR |
+		    SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR),
+		   base + SABRE_CE_AFSR);
+
+
+	err = request_irq(op->irqs[2], sabre_ce_intr, 0, "SABRE_CE", pbm);
+	if (err)
+		printk(KERN_WARNING "%s: Couldn't register CE, err=%d.\n",
+		       pbm->name, err);
+	err = request_irq(op->irqs[0], psycho_pcierr_intr, 0,
+			  "SABRE_PCIERR", pbm);
+	if (err)
+		printk(KERN_WARNING "%s: Couldn't register PCIERR, err=%d.\n",
+		       pbm->name, err);
+
+	tmp = upa_readq(base + SABRE_PCICTRL);
+	tmp |= SABRE_PCICTRL_ERREN;
+	upa_writeq(tmp, base + SABRE_PCICTRL);
+}
+
+static void apb_init(struct pci_bus *sabre_bus)
+{
+	struct pci_dev *pdev;
+
+	list_for_each_entry(pdev, &sabre_bus->devices, bus_list) {
+		if (pdev->vendor == PCI_VENDOR_ID_SUN &&
+		    pdev->device == PCI_DEVICE_ID_SUN_SIMBA) {
+			u16 word16;
+
+			pci_read_config_word(pdev, PCI_COMMAND, &word16);
+			word16 |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY |
+				PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY |
+				PCI_COMMAND_IO;
+			pci_write_config_word(pdev, PCI_COMMAND, word16);
+
+			/* Status register bits are "write 1 to clear". */
+			pci_write_config_word(pdev, PCI_STATUS, 0xffff);
+			pci_write_config_word(pdev, PCI_SEC_STATUS, 0xffff);
+
+			/* Use a primary/seconday latency timer value
+			 * of 64.
+			 */
+			pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 64);
+			pci_write_config_byte(pdev, PCI_SEC_LATENCY_TIMER, 64);
+
+			/* Enable reporting/forwarding of master aborts,
+			 * parity, and SERR.
+			 */
+			pci_write_config_byte(pdev, PCI_BRIDGE_CONTROL,
+					      (PCI_BRIDGE_CTL_PARITY |
+					       PCI_BRIDGE_CTL_SERR |
+					       PCI_BRIDGE_CTL_MASTER_ABORT));
+		}
+	}
+}
+
+static void __init sabre_scan_bus(struct pci_pbm_info *pbm,
+				  struct device *parent)
+{
+	static int once;
+
+	/* The APB bridge speaks to the Sabre host PCI bridge
+	 * at 66Mhz, but the front side of APB runs at 33Mhz
+	 * for both segments.
+	 *
+	 * Hummingbird systems do not use APB, so they run
+	 * at 66MHZ.
+	 */
+	if (hummingbird_p)
+		pbm->is_66mhz_capable = 1;
+	else
+		pbm->is_66mhz_capable = 0;
+
+	/* This driver has not been verified to handle
+	 * multiple SABREs yet, so trap this.
+	 *
+	 * Also note that the SABRE host bridge is hardwired
+	 * to live at bus 0.
+	 */
+	if (once != 0) {
+		printk(KERN_ERR PFX "Multiple controllers unsupported.\n");
+		return;
+	}
+	once++;
+
+	pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
+	if (!pbm->pci_bus)
+		return;
+
+	sabre_root_bus = pbm->pci_bus;
+
+	apb_init(pbm->pci_bus);
+
+	sabre_register_error_handlers(pbm);
+}
+
+static void __init sabre_pbm_init(struct pci_pbm_info *pbm,
+				  struct of_device *op)
+{
+	psycho_pbm_init_common(pbm, op, "SABRE", PBM_CHIP_TYPE_SABRE);
+	pbm->pci_afsr = pbm->controller_regs + SABRE_PIOAFSR;
+	pbm->pci_afar = pbm->controller_regs + SABRE_PIOAFAR;
+	pbm->pci_csr = pbm->controller_regs + SABRE_PCICTRL;
+	sabre_scan_bus(pbm, &op->dev);
+}
+
+static int __devinit sabre_probe(struct of_device *op,
+				 const struct of_device_id *match)
+{
+	const struct linux_prom64_registers *pr_regs;
+	struct device_node *dp = op->node;
+	struct pci_pbm_info *pbm;
+	u32 upa_portid, dma_mask;
+	struct iommu *iommu;
+	int tsbsize, err;
+	const u32 *vdma;
+	u64 clear_irq;
+
+	hummingbird_p = (match->data != NULL);
+	if (!hummingbird_p) {
+		struct device_node *cpu_dp;
+
+		/* Of course, Sun has to encode things a thousand
+		 * different ways, inconsistently.
+		 */
+		for_each_node_by_type(cpu_dp, "cpu") {
+			if (!strcmp(cpu_dp->name, "SUNW,UltraSPARC-IIe"))
+				hummingbird_p = 1;
+		}
+	}
+
+	err = -ENOMEM;
+	pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
+	if (!pbm) {
+		printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
+		goto out_err;
+	}
+
+	iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
+	if (!iommu) {
+		printk(KERN_ERR PFX "Cannot allocate PBM iommu.\n");
+		goto out_free_controller;
+	}
+
+	pbm->iommu = iommu;
+
+	upa_portid = of_getintprop_default(dp, "upa-portid", 0xff);
+
+	pbm->portid = upa_portid;
+
+	/*
+	 * Map in SABRE register set and report the presence of this SABRE.
+	 */
+	
+	pr_regs = of_get_property(dp, "reg", NULL);
+	err = -ENODEV;
+	if (!pr_regs) {
+		printk(KERN_ERR PFX "No reg property\n");
+		goto out_free_iommu;
+	}
+
+	/*
+	 * First REG in property is base of entire SABRE register space.
+	 */
+	pbm->controller_regs = pr_regs[0].phys_addr;
+
+	/* Clear interrupts */
+
+	/* PCI first */
+	for (clear_irq = SABRE_ICLR_A_SLOT0; clear_irq < SABRE_ICLR_B_SLOT0 + 0x80; clear_irq += 8)
+		upa_writeq(0x0UL, pbm->controller_regs + clear_irq);
+
+	/* Then OBIO */
+	for (clear_irq = SABRE_ICLR_SCSI; clear_irq < SABRE_ICLR_SCSI + 0x80; clear_irq += 8)
+		upa_writeq(0x0UL, pbm->controller_regs + clear_irq);
+
+	/* Error interrupts are enabled later after the bus scan. */
+	upa_writeq((SABRE_PCICTRL_MRLEN   | SABRE_PCICTRL_SERR |
+		    SABRE_PCICTRL_ARBPARK | SABRE_PCICTRL_AEN),
+		   pbm->controller_regs + SABRE_PCICTRL);
+
+	/* Now map in PCI config space for entire SABRE. */
+	pbm->config_space = pbm->controller_regs + SABRE_CONFIGSPACE;
+
+	vdma = of_get_property(dp, "virtual-dma", NULL);
+	if (!vdma) {
+		printk(KERN_ERR PFX "No virtual-dma property\n");
+		goto out_free_iommu;
+	}
+
+	dma_mask = vdma[0];
+	switch(vdma[1]) {
+		case 0x20000000:
+			dma_mask |= 0x1fffffff;
+			tsbsize = 64;
+			break;
+		case 0x40000000:
+			dma_mask |= 0x3fffffff;
+			tsbsize = 128;
+			break;
+
+		case 0x80000000:
+			dma_mask |= 0x7fffffff;
+			tsbsize = 128;
+			break;
+		default:
+			printk(KERN_ERR PFX "Strange virtual-dma size.\n");
+			goto out_free_iommu;
+	}
+
+	err = psycho_iommu_init(pbm, tsbsize, vdma[0], dma_mask, SABRE_WRSYNC);
+	if (err)
+		goto out_free_iommu;
+
+	/*
+	 * Look for APB underneath.
+	 */
+	sabre_pbm_init(pbm, op);
+
+	pbm->next = pci_pbm_root;
+	pci_pbm_root = pbm;
+
+	dev_set_drvdata(&op->dev, pbm);
+
+	return 0;
+
+out_free_iommu:
+	kfree(pbm->iommu);
+
+out_free_controller:
+	kfree(pbm);
+
+out_err:
+	return err;
+}
+
+static struct of_device_id __initdata sabre_match[] = {
+	{
+		.name = "pci",
+		.compatible = "pci108e,a001",
+		.data = (void *) 1,
+	},
+	{
+		.name = "pci",
+		.compatible = "pci108e,a000",
+	},
+	{},
+};
+
+static struct of_platform_driver sabre_driver = {
+	.name		= DRIVER_NAME,
+	.match_table	= sabre_match,
+	.probe		= sabre_probe,
+};
+
+static int __init sabre_init(void)
+{
+	return of_register_driver(&sabre_driver, &of_bus_type);
+}
+
+subsys_initcall(sabre_init);
diff --git a/arch/sparc/kernel/pci_schizo.c b/arch/sparc/kernel/pci_schizo.c
new file mode 100644
index 000000000000..45d9dba1ba11
--- /dev/null
+++ b/arch/sparc/kernel/pci_schizo.c
@@ -0,0 +1,1504 @@
+/* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
+ *
+ * Copyright (C) 2001, 2002, 2003, 2007, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/of_device.h>
+
+#include <asm/iommu.h>
+#include <asm/irq.h>
+#include <asm/pstate.h>
+#include <asm/prom.h>
+#include <asm/upa.h>
+
+#include "pci_impl.h"
+#include "iommu_common.h"
+
+#define DRIVER_NAME	"schizo"
+#define PFX		DRIVER_NAME ": "
+
+/* This is a convention that at least Excalibur and Merlin
+ * follow.  I suppose the SCHIZO used in Starcat and friends
+ * will do similar.
+ *
+ * The only way I could see this changing is if the newlink
+ * block requires more space in Schizo's address space than
+ * they predicted, thus requiring an address space reorg when
+ * the newer Schizo is taped out.
+ */
+
+/* Streaming buffer control register. */
+#define SCHIZO_STRBUF_CTRL_LPTR    0x00000000000000f0UL /* LRU Lock Pointer */
+#define SCHIZO_STRBUF_CTRL_LENAB   0x0000000000000008UL /* LRU Lock Enable */
+#define SCHIZO_STRBUF_CTRL_RRDIS   0x0000000000000004UL /* Rerun Disable */
+#define SCHIZO_STRBUF_CTRL_DENAB   0x0000000000000002UL /* Diagnostic Mode Enable */
+#define SCHIZO_STRBUF_CTRL_ENAB    0x0000000000000001UL /* Streaming Buffer Enable */
+
+/* IOMMU control register. */
+#define SCHIZO_IOMMU_CTRL_RESV     0xfffffffff9000000UL /* Reserved                      */
+#define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status      */
+#define SCHIZO_IOMMU_CTRL_XLTEERR  0x0000000001000000UL /* Translation Error encountered */
+#define SCHIZO_IOMMU_CTRL_LCKEN    0x0000000000800000UL /* Enable translation locking    */
+#define SCHIZO_IOMMU_CTRL_LCKPTR   0x0000000000780000UL /* Translation lock pointer      */
+#define SCHIZO_IOMMU_CTRL_TSBSZ    0x0000000000070000UL /* TSB Size                      */
+#define SCHIZO_IOMMU_TSBSZ_1K      0x0000000000000000UL /* TSB Table 1024 8-byte entries */
+#define SCHIZO_IOMMU_TSBSZ_2K      0x0000000000010000UL /* TSB Table 2048 8-byte entries */
+#define SCHIZO_IOMMU_TSBSZ_4K      0x0000000000020000UL /* TSB Table 4096 8-byte entries */
+#define SCHIZO_IOMMU_TSBSZ_8K      0x0000000000030000UL /* TSB Table 8192 8-byte entries */
+#define SCHIZO_IOMMU_TSBSZ_16K     0x0000000000040000UL /* TSB Table 16k 8-byte entries  */
+#define SCHIZO_IOMMU_TSBSZ_32K     0x0000000000050000UL /* TSB Table 32k 8-byte entries  */
+#define SCHIZO_IOMMU_TSBSZ_64K     0x0000000000060000UL /* TSB Table 64k 8-byte entries  */
+#define SCHIZO_IOMMU_TSBSZ_128K    0x0000000000070000UL /* TSB Table 128k 8-byte entries */
+#define SCHIZO_IOMMU_CTRL_RESV2    0x000000000000fff8UL /* Reserved                      */
+#define SCHIZO_IOMMU_CTRL_TBWSZ    0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
+#define SCHIZO_IOMMU_CTRL_DENAB    0x0000000000000002UL /* Diagnostic mode enable        */
+#define SCHIZO_IOMMU_CTRL_ENAB     0x0000000000000001UL /* IOMMU Enable                  */
+
+/* Schizo config space address format is nearly identical to
+ * that of PSYCHO:
+ *
+ *  32             24 23 16 15    11 10       8 7   2  1 0
+ * ---------------------------------------------------------
+ * |0 0 0 0 0 0 0 0 0| bus | device | function | reg | 0 0 |
+ * ---------------------------------------------------------
+ */
+#define SCHIZO_CONFIG_BASE(PBM)	((PBM)->config_space)
+#define SCHIZO_CONFIG_ENCODE(BUS, DEVFN, REG)	\
+	(((unsigned long)(BUS)   << 16) |	\
+	 ((unsigned long)(DEVFN) << 8)  |	\
+	 ((unsigned long)(REG)))
+
+static void *schizo_pci_config_mkaddr(struct pci_pbm_info *pbm,
+				      unsigned char bus,
+				      unsigned int devfn,
+				      int where)
+{
+	if (!pbm)
+		return NULL;
+	bus -= pbm->pci_first_busno;
+	return (void *)
+		(SCHIZO_CONFIG_BASE(pbm) |
+		 SCHIZO_CONFIG_ENCODE(bus, devfn, where));
+}
+
+/* SCHIZO error handling support. */
+enum schizo_error_type {
+	UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR
+};
+
+static DEFINE_SPINLOCK(stc_buf_lock);
+static unsigned long stc_error_buf[128];
+static unsigned long stc_tag_buf[16];
+static unsigned long stc_line_buf[16];
+
+#define SCHIZO_UE_INO		0x30 /* Uncorrectable ECC error */
+#define SCHIZO_CE_INO		0x31 /* Correctable ECC error */
+#define SCHIZO_PCIERR_A_INO	0x32 /* PBM A PCI bus error */
+#define SCHIZO_PCIERR_B_INO	0x33 /* PBM B PCI bus error */
+#define SCHIZO_SERR_INO		0x34 /* Safari interface error */
+
+#define SCHIZO_STC_ERR	0xb800UL /* --> 0xba00 */
+#define SCHIZO_STC_TAG	0xba00UL /* --> 0xba80 */
+#define SCHIZO_STC_LINE	0xbb00UL /* --> 0xbb80 */
+
+#define SCHIZO_STCERR_WRITE	0x2UL
+#define SCHIZO_STCERR_READ	0x1UL
+
+#define SCHIZO_STCTAG_PPN	0x3fffffff00000000UL
+#define SCHIZO_STCTAG_VPN	0x00000000ffffe000UL
+#define SCHIZO_STCTAG_VALID	0x8000000000000000UL
+#define SCHIZO_STCTAG_READ	0x4000000000000000UL
+
+#define SCHIZO_STCLINE_LINDX	0x0000000007800000UL
+#define SCHIZO_STCLINE_SPTR	0x000000000007e000UL
+#define SCHIZO_STCLINE_LADDR	0x0000000000001fc0UL
+#define SCHIZO_STCLINE_EPTR	0x000000000000003fUL
+#define SCHIZO_STCLINE_VALID	0x0000000000600000UL
+#define SCHIZO_STCLINE_FOFN	0x0000000000180000UL
+
+static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
+					 enum schizo_error_type type)
+{
+	struct strbuf *strbuf = &pbm->stc;
+	unsigned long regbase = pbm->pbm_regs;
+	unsigned long err_base, tag_base, line_base;
+	u64 control;
+	int i;
+
+	err_base = regbase + SCHIZO_STC_ERR;
+	tag_base = regbase + SCHIZO_STC_TAG;
+	line_base = regbase + SCHIZO_STC_LINE;
+
+	spin_lock(&stc_buf_lock);
+
+	/* This is __REALLY__ dangerous.  When we put the
+	 * streaming buffer into diagnostic mode to probe
+	 * it's tags and error status, we _must_ clear all
+	 * of the line tag valid bits before re-enabling
+	 * the streaming buffer.  If any dirty data lives
+	 * in the STC when we do this, we will end up
+	 * invalidating it before it has a chance to reach
+	 * main memory.
+	 */
+	control = upa_readq(strbuf->strbuf_control);
+	upa_writeq((control | SCHIZO_STRBUF_CTRL_DENAB),
+		   strbuf->strbuf_control);
+	for (i = 0; i < 128; i++) {
+		unsigned long val;
+
+		val = upa_readq(err_base + (i * 8UL));
+		upa_writeq(0UL, err_base + (i * 8UL));
+		stc_error_buf[i] = val;
+	}
+	for (i = 0; i < 16; i++) {
+		stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL));
+		stc_line_buf[i] = upa_readq(line_base + (i * 8UL));
+		upa_writeq(0UL, tag_base + (i * 8UL));
+		upa_writeq(0UL, line_base + (i * 8UL));
+	}
+
+	/* OK, state is logged, exit diagnostic mode. */
+	upa_writeq(control, strbuf->strbuf_control);
+
+	for (i = 0; i < 16; i++) {
+		int j, saw_error, first, last;
+
+		saw_error = 0;
+		first = i * 8;
+		last = first + 8;
+		for (j = first; j < last; j++) {
+			unsigned long errval = stc_error_buf[j];
+			if (errval != 0) {
+				saw_error++;
+				printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n",
+				       pbm->name,
+				       j,
+				       (errval & SCHIZO_STCERR_WRITE) ? 1 : 0,
+				       (errval & SCHIZO_STCERR_READ) ? 1 : 0);
+			}
+		}
+		if (saw_error != 0) {
+			unsigned long tagval = stc_tag_buf[i];
+			unsigned long lineval = stc_line_buf[i];
+			printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n",
+			       pbm->name,
+			       i,
+			       ((tagval & SCHIZO_STCTAG_PPN) >> 19UL),
+			       (tagval & SCHIZO_STCTAG_VPN),
+			       ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0),
+			       ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0));
+
+			/* XXX Should spit out per-bank error information... -DaveM */
+			printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
+			       "V(%d)FOFN(%d)]\n",
+			       pbm->name,
+			       i,
+			       ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL),
+			       ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL),
+			       ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL),
+			       ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL),
+			       ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0),
+			       ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0));
+		}
+	}
+
+	spin_unlock(&stc_buf_lock);
+}
+
+/* IOMMU is per-PBM in Schizo, so interrogate both for anonymous
+ * controller level errors.
+ */
+
+#define SCHIZO_IOMMU_TAG	0xa580UL
+#define SCHIZO_IOMMU_DATA	0xa600UL
+
+#define SCHIZO_IOMMU_TAG_CTXT	0x0000001ffe000000UL
+#define SCHIZO_IOMMU_TAG_ERRSTS	0x0000000001800000UL
+#define SCHIZO_IOMMU_TAG_ERR	0x0000000000400000UL
+#define SCHIZO_IOMMU_TAG_WRITE	0x0000000000200000UL
+#define SCHIZO_IOMMU_TAG_STREAM	0x0000000000100000UL
+#define SCHIZO_IOMMU_TAG_SIZE	0x0000000000080000UL
+#define SCHIZO_IOMMU_TAG_VPAGE	0x000000000007ffffUL
+
+#define SCHIZO_IOMMU_DATA_VALID	0x0000000100000000UL
+#define SCHIZO_IOMMU_DATA_CACHE	0x0000000040000000UL
+#define SCHIZO_IOMMU_DATA_PPAGE	0x000000003fffffffUL
+
+static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
+					 enum schizo_error_type type)
+{
+	struct iommu *iommu = pbm->iommu;
+	unsigned long iommu_tag[16];
+	unsigned long iommu_data[16];
+	unsigned long flags;
+	u64 control;
+	int i;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	control = upa_readq(iommu->iommu_control);
+	if (control & SCHIZO_IOMMU_CTRL_XLTEERR) {
+		unsigned long base;
+		char *type_string;
+
+		/* Clear the error encountered bit. */
+		control &= ~SCHIZO_IOMMU_CTRL_XLTEERR;
+		upa_writeq(control, iommu->iommu_control);
+
+		switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
+		case 0:
+			type_string = "Protection Error";
+			break;
+		case 1:
+			type_string = "Invalid Error";
+			break;
+		case 2:
+			type_string = "TimeOut Error";
+			break;
+		case 3:
+		default:
+			type_string = "ECC Error";
+			break;
+		};
+		printk("%s: IOMMU Error, type[%s]\n",
+		       pbm->name, type_string);
+
+		/* Put the IOMMU into diagnostic mode and probe
+		 * it's TLB for entries with error status.
+		 *
+		 * It is very possible for another DVMA to occur
+		 * while we do this probe, and corrupt the system
+		 * further.  But we are so screwed at this point
+		 * that we are likely to crash hard anyways, so
+		 * get as much diagnostic information to the
+		 * console as we can.
+		 */
+		upa_writeq(control | SCHIZO_IOMMU_CTRL_DENAB,
+			   iommu->iommu_control);
+
+		base = pbm->pbm_regs;
+
+		for (i = 0; i < 16; i++) {
+			iommu_tag[i] =
+				upa_readq(base + SCHIZO_IOMMU_TAG + (i * 8UL));
+			iommu_data[i] =
+				upa_readq(base + SCHIZO_IOMMU_DATA + (i * 8UL));
+
+			/* Now clear out the entry. */
+			upa_writeq(0, base + SCHIZO_IOMMU_TAG + (i * 8UL));
+			upa_writeq(0, base + SCHIZO_IOMMU_DATA + (i * 8UL));
+		}
+
+		/* Leave diagnostic mode. */
+		upa_writeq(control, iommu->iommu_control);
+
+		for (i = 0; i < 16; i++) {
+			unsigned long tag, data;
+
+			tag = iommu_tag[i];
+			if (!(tag & SCHIZO_IOMMU_TAG_ERR))
+				continue;
+
+			data = iommu_data[i];
+			switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) {
+			case 0:
+				type_string = "Protection Error";
+				break;
+			case 1:
+				type_string = "Invalid Error";
+				break;
+			case 2:
+				type_string = "TimeOut Error";
+				break;
+			case 3:
+			default:
+				type_string = "ECC Error";
+				break;
+			};
+			printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
+			       "sz(%dK) vpg(%08lx)]\n",
+			       pbm->name, i, type_string,
+			       (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL),
+			       ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0),
+			       ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0),
+			       ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8),
+			       (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
+			printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
+			       pbm->name, i,
+			       ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0),
+			       ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0),
+			       (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
+		}
+	}
+	if (pbm->stc.strbuf_enabled)
+		__schizo_check_stc_error_pbm(pbm, type);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+static void schizo_check_iommu_error(struct pci_pbm_info *pbm,
+				     enum schizo_error_type type)
+{
+	schizo_check_iommu_error_pbm(pbm, type);
+	if (pbm->sibling)
+		schizo_check_iommu_error_pbm(pbm->sibling, type);
+}
+
+/* Uncorrectable ECC error status gathering. */
+#define SCHIZO_UE_AFSR	0x10030UL
+#define SCHIZO_UE_AFAR	0x10038UL
+
+#define SCHIZO_UEAFSR_PPIO	0x8000000000000000UL /* Safari */
+#define SCHIZO_UEAFSR_PDRD	0x4000000000000000UL /* Safari/Tomatillo */
+#define SCHIZO_UEAFSR_PDWR	0x2000000000000000UL /* Safari */
+#define SCHIZO_UEAFSR_SPIO	0x1000000000000000UL /* Safari */
+#define SCHIZO_UEAFSR_SDMA	0x0800000000000000UL /* Safari/Tomatillo */
+#define SCHIZO_UEAFSR_ERRPNDG	0x0300000000000000UL /* Safari */
+#define SCHIZO_UEAFSR_BMSK	0x000003ff00000000UL /* Safari */
+#define SCHIZO_UEAFSR_QOFF	0x00000000c0000000UL /* Safari/Tomatillo */
+#define SCHIZO_UEAFSR_AID	0x000000001f000000UL /* Safari/Tomatillo */
+#define SCHIZO_UEAFSR_PARTIAL	0x0000000000800000UL /* Safari */
+#define SCHIZO_UEAFSR_OWNEDIN	0x0000000000400000UL /* Safari */
+#define SCHIZO_UEAFSR_MTAGSYND	0x00000000000f0000UL /* Safari */
+#define SCHIZO_UEAFSR_MTAG	0x000000000000e000UL /* Safari */
+#define SCHIZO_UEAFSR_ECCSYND	0x00000000000001ffUL /* Safari */
+
+static irqreturn_t schizo_ue_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR;
+	unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR;
+	unsigned long afsr, afar, error_bits;
+	int reported, limit;
+
+	/* Latch uncorrectable error status. */
+	afar = upa_readq(afar_reg);
+
+	/* If either of the error pending bits are set in the
+	 * AFSR, the error status is being actively updated by
+	 * the hardware and we must re-read to get a clean value.
+	 */
+	limit = 1000;
+	do {
+		afsr = upa_readq(afsr_reg);
+	} while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
+
+	/* Clear the primary/secondary error status bits. */
+	error_bits = afsr &
+		(SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR |
+		 SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA);
+	if (!error_bits)
+		return IRQ_NONE;
+	upa_writeq(error_bits, afsr_reg);
+
+	/* Log the error. */
+	printk("%s: Uncorrectable Error, primary error type[%s]\n",
+	       pbm->name,
+	       (((error_bits & SCHIZO_UEAFSR_PPIO) ?
+		 "PIO" :
+		 ((error_bits & SCHIZO_UEAFSR_PDRD) ?
+		  "DMA Read" :
+		  ((error_bits & SCHIZO_UEAFSR_PDWR) ?
+		   "DMA Write" : "???")))));
+	printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
+	       pbm->name,
+	       (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
+	       (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
+	       (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
+	printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
+	       pbm->name,
+	       (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
+	       (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
+	       (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
+	       (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
+	       (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
+	printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
+	printk("%s: UE Secondary errors [", pbm->name);
+	reported = 0;
+	if (afsr & SCHIZO_UEAFSR_SPIO) {
+		reported++;
+		printk("(PIO)");
+	}
+	if (afsr & SCHIZO_UEAFSR_SDMA) {
+		reported++;
+		printk("(DMA)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	/* Interrogate IOMMU for error status. */
+	schizo_check_iommu_error(pbm, UE_ERR);
+
+	return IRQ_HANDLED;
+}
+
+#define SCHIZO_CE_AFSR	0x10040UL
+#define SCHIZO_CE_AFAR	0x10048UL
+
+#define SCHIZO_CEAFSR_PPIO	0x8000000000000000UL
+#define SCHIZO_CEAFSR_PDRD	0x4000000000000000UL
+#define SCHIZO_CEAFSR_PDWR	0x2000000000000000UL
+#define SCHIZO_CEAFSR_SPIO	0x1000000000000000UL
+#define SCHIZO_CEAFSR_SDMA	0x0800000000000000UL
+#define SCHIZO_CEAFSR_ERRPNDG	0x0300000000000000UL
+#define SCHIZO_CEAFSR_BMSK	0x000003ff00000000UL
+#define SCHIZO_CEAFSR_QOFF	0x00000000c0000000UL
+#define SCHIZO_CEAFSR_AID	0x000000001f000000UL
+#define SCHIZO_CEAFSR_PARTIAL	0x0000000000800000UL
+#define SCHIZO_CEAFSR_OWNEDIN	0x0000000000400000UL
+#define SCHIZO_CEAFSR_MTAGSYND	0x00000000000f0000UL
+#define SCHIZO_CEAFSR_MTAG	0x000000000000e000UL
+#define SCHIZO_CEAFSR_ECCSYND	0x00000000000001ffUL
+
+static irqreturn_t schizo_ce_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	unsigned long afsr_reg = pbm->controller_regs + SCHIZO_CE_AFSR;
+	unsigned long afar_reg = pbm->controller_regs + SCHIZO_CE_AFAR;
+	unsigned long afsr, afar, error_bits;
+	int reported, limit;
+
+	/* Latch error status. */
+	afar = upa_readq(afar_reg);
+
+	/* If either of the error pending bits are set in the
+	 * AFSR, the error status is being actively updated by
+	 * the hardware and we must re-read to get a clean value.
+	 */
+	limit = 1000;
+	do {
+		afsr = upa_readq(afsr_reg);
+	} while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
+
+	/* Clear primary/secondary error status bits. */
+	error_bits = afsr &
+		(SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR |
+		 SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA);
+	if (!error_bits)
+		return IRQ_NONE;
+	upa_writeq(error_bits, afsr_reg);
+
+	/* Log the error. */
+	printk("%s: Correctable Error, primary error type[%s]\n",
+	       pbm->name,
+	       (((error_bits & SCHIZO_CEAFSR_PPIO) ?
+		 "PIO" :
+		 ((error_bits & SCHIZO_CEAFSR_PDRD) ?
+		  "DMA Read" :
+		  ((error_bits & SCHIZO_CEAFSR_PDWR) ?
+		   "DMA Write" : "???")))));
+
+	/* XXX Use syndrome and afar to print out module string just like
+	 * XXX UDB CE trap handler does... -DaveM
+	 */
+	printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
+	       pbm->name,
+	       (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
+	       (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
+	       (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
+	printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
+	       pbm->name,
+	       (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
+	       (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
+	       (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
+	       (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
+	       (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
+	printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
+	printk("%s: CE Secondary errors [", pbm->name);
+	reported = 0;
+	if (afsr & SCHIZO_CEAFSR_SPIO) {
+		reported++;
+		printk("(PIO)");
+	}
+	if (afsr & SCHIZO_CEAFSR_SDMA) {
+		reported++;
+		printk("(DMA)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	return IRQ_HANDLED;
+}
+
+#define SCHIZO_PCI_AFSR	0x2010UL
+#define SCHIZO_PCI_AFAR	0x2018UL
+
+#define SCHIZO_PCIAFSR_PMA	0x8000000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_PTA	0x4000000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_PRTRY	0x2000000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_PPERR	0x1000000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_PTTO	0x0800000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_PUNUS	0x0400000000000000UL /* Schizo */
+#define SCHIZO_PCIAFSR_SMA	0x0200000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_STA	0x0100000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_SRTRY	0x0080000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_SPERR	0x0040000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_STTO	0x0020000000000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_SUNUS	0x0010000000000000UL /* Schizo */
+#define SCHIZO_PCIAFSR_BMSK	0x000003ff00000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_BLK	0x0000000080000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_CFG	0x0000000040000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_MEM	0x0000000020000000UL /* Schizo/Tomatillo */
+#define SCHIZO_PCIAFSR_IO	0x0000000010000000UL /* Schizo/Tomatillo */
+
+#define SCHIZO_PCI_CTRL		(0x2000UL)
+#define SCHIZO_PCICTRL_BUS_UNUS	(1UL << 63UL) /* Safari */
+#define SCHIZO_PCICTRL_DTO_INT	(1UL << 61UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_ESLCK	(1UL << 51UL) /* Safari */
+#define SCHIZO_PCICTRL_ERRSLOT	(7UL << 48UL) /* Safari */
+#define SCHIZO_PCICTRL_TTO_ERR	(1UL << 38UL) /* Safari/Tomatillo */
+#define SCHIZO_PCICTRL_RTRY_ERR	(1UL << 37UL) /* Safari/Tomatillo */
+#define SCHIZO_PCICTRL_DTO_ERR	(1UL << 36UL) /* Safari/Tomatillo */
+#define SCHIZO_PCICTRL_SBH_ERR	(1UL << 35UL) /* Safari */
+#define SCHIZO_PCICTRL_SERR	(1UL << 34UL) /* Safari/Tomatillo */
+#define SCHIZO_PCICTRL_PCISPD	(1UL << 33UL) /* Safari */
+#define SCHIZO_PCICTRL_MRM_PREF	(1UL << 30UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_RDO_PREF	(1UL << 29UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_RDL_PREF	(1UL << 28UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_PTO	(3UL << 24UL) /* Safari/Tomatillo */
+#define SCHIZO_PCICTRL_PTO_SHIFT 24UL
+#define SCHIZO_PCICTRL_TRWSW	(7UL << 21UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_F_TGT_A	(1UL << 20UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */
+#define SCHIZO_PCICTRL_F_TGT_RT	(1UL << 19UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_SBH_INT	(1UL << 18UL) /* Safari */
+#define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */
+#define SCHIZO_PCICTRL_EEN	(1UL << 17UL) /* Safari/Tomatillo */
+#define SCHIZO_PCICTRL_PARK	(1UL << 16UL) /* Safari/Tomatillo */
+#define SCHIZO_PCICTRL_PCIRST	(1UL <<  8UL) /* Safari */
+#define SCHIZO_PCICTRL_ARB_S	(0x3fUL << 0UL) /* Safari */
+#define SCHIZO_PCICTRL_ARB_T	(0xffUL << 0UL) /* Tomatillo */
+
+static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
+{
+	unsigned long csr_reg, csr, csr_error_bits;
+	irqreturn_t ret = IRQ_NONE;
+	u16 stat;
+
+	csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL;
+	csr = upa_readq(csr_reg);
+	csr_error_bits =
+		csr & (SCHIZO_PCICTRL_BUS_UNUS |
+		       SCHIZO_PCICTRL_TTO_ERR |
+		       SCHIZO_PCICTRL_RTRY_ERR |
+		       SCHIZO_PCICTRL_DTO_ERR |
+		       SCHIZO_PCICTRL_SBH_ERR |
+		       SCHIZO_PCICTRL_SERR);
+	if (csr_error_bits) {
+		/* Clear the errors.  */
+		upa_writeq(csr, csr_reg);
+
+		/* Log 'em.  */
+		if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS)
+			printk("%s: Bus unusable error asserted.\n",
+			       pbm->name);
+		if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR)
+			printk("%s: PCI TRDY# timeout error asserted.\n",
+			       pbm->name);
+		if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR)
+			printk("%s: PCI excessive retry error asserted.\n",
+			       pbm->name);
+		if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR)
+			printk("%s: PCI discard timeout error asserted.\n",
+			       pbm->name);
+		if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR)
+			printk("%s: PCI streaming byte hole error asserted.\n",
+			       pbm->name);
+		if (csr_error_bits & SCHIZO_PCICTRL_SERR)
+			printk("%s: PCI SERR signal asserted.\n",
+			       pbm->name);
+		ret = IRQ_HANDLED;
+	}
+	pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
+	if (stat & (PCI_STATUS_PARITY |
+		    PCI_STATUS_SIG_TARGET_ABORT |
+		    PCI_STATUS_REC_TARGET_ABORT |
+		    PCI_STATUS_REC_MASTER_ABORT |
+		    PCI_STATUS_SIG_SYSTEM_ERROR)) {
+		printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
+		       pbm->name, stat);
+		pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
+		ret = IRQ_HANDLED;
+	}
+	return ret;
+}
+
+static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	unsigned long afsr_reg, afar_reg, base;
+	unsigned long afsr, afar, error_bits;
+	int reported;
+
+	base = pbm->pbm_regs;
+
+	afsr_reg = base + SCHIZO_PCI_AFSR;
+	afar_reg = base + SCHIZO_PCI_AFAR;
+
+	/* Latch error status. */
+	afar = upa_readq(afar_reg);
+	afsr = upa_readq(afsr_reg);
+
+	/* Clear primary/secondary error status bits. */
+	error_bits = afsr &
+		(SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
+		 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
+		 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
+		 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
+		 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
+		 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS);
+	if (!error_bits)
+		return schizo_pcierr_intr_other(pbm);
+	upa_writeq(error_bits, afsr_reg);
+
+	/* Log the error. */
+	printk("%s: PCI Error, primary error type[%s]\n",
+	       pbm->name,
+	       (((error_bits & SCHIZO_PCIAFSR_PMA) ?
+		 "Master Abort" :
+		 ((error_bits & SCHIZO_PCIAFSR_PTA) ?
+		  "Target Abort" :
+		  ((error_bits & SCHIZO_PCIAFSR_PRTRY) ?
+		   "Excessive Retries" :
+		   ((error_bits & SCHIZO_PCIAFSR_PPERR) ?
+		    "Parity Error" :
+		    ((error_bits & SCHIZO_PCIAFSR_PTTO) ?
+		     "Timeout" :
+		     ((error_bits & SCHIZO_PCIAFSR_PUNUS) ?
+		      "Bus Unusable" : "???"))))))));
+	printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n",
+	       pbm->name,
+	       (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL,
+	       (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0,
+	       ((afsr & SCHIZO_PCIAFSR_CFG) ?
+		"Config" :
+		((afsr & SCHIZO_PCIAFSR_MEM) ?
+		 "Memory" :
+		 ((afsr & SCHIZO_PCIAFSR_IO) ?
+		  "I/O" : "???"))));
+	printk("%s: PCI AFAR [%016lx]\n",
+	       pbm->name, afar);
+	printk("%s: PCI Secondary errors [",
+	       pbm->name);
+	reported = 0;
+	if (afsr & SCHIZO_PCIAFSR_SMA) {
+		reported++;
+		printk("(Master Abort)");
+	}
+	if (afsr & SCHIZO_PCIAFSR_STA) {
+		reported++;
+		printk("(Target Abort)");
+	}
+	if (afsr & SCHIZO_PCIAFSR_SRTRY) {
+		reported++;
+		printk("(Excessive Retries)");
+	}
+	if (afsr & SCHIZO_PCIAFSR_SPERR) {
+		reported++;
+		printk("(Parity Error)");
+	}
+	if (afsr & SCHIZO_PCIAFSR_STTO) {
+		reported++;
+		printk("(Timeout)");
+	}
+	if (afsr & SCHIZO_PCIAFSR_SUNUS) {
+		reported++;
+		printk("(Bus Unusable)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	/* For the error types shown, scan PBM's PCI bus for devices
+	 * which have logged that error type.
+	 */
+
+	/* If we see a Target Abort, this could be the result of an
+	 * IOMMU translation error of some sort.  It is extremely
+	 * useful to log this information as usually it indicates
+	 * a bug in the IOMMU support code or a PCI device driver.
+	 */
+	if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {
+		schizo_check_iommu_error(pbm, PCI_ERR);
+		pci_scan_for_target_abort(pbm, pbm->pci_bus);
+	}
+	if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))
+		pci_scan_for_master_abort(pbm, pbm->pci_bus);
+
+	/* For excessive retries, PSYCHO/PBM will abort the device
+	 * and there is no way to specifically check for excessive
+	 * retries in the config space status registers.  So what
+	 * we hope is that we'll catch it via the master/target
+	 * abort events.
+	 */
+
+	if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR))
+		pci_scan_for_parity_error(pbm, pbm->pci_bus);
+
+	return IRQ_HANDLED;
+}
+
+#define SCHIZO_SAFARI_ERRLOG	0x10018UL
+
+#define SAFARI_ERRLOG_ERROUT	0x8000000000000000UL
+
+#define BUS_ERROR_BADCMD	0x4000000000000000UL /* Schizo/Tomatillo */
+#define BUS_ERROR_SSMDIS	0x2000000000000000UL /* Safari */
+#define BUS_ERROR_BADMA		0x1000000000000000UL /* Safari */
+#define BUS_ERROR_BADMB		0x0800000000000000UL /* Safari */
+#define BUS_ERROR_BADMC		0x0400000000000000UL /* Safari */
+#define BUS_ERROR_SNOOP_GR	0x0000000000200000UL /* Tomatillo */
+#define BUS_ERROR_SNOOP_PCI	0x0000000000100000UL /* Tomatillo */
+#define BUS_ERROR_SNOOP_RD	0x0000000000080000UL /* Tomatillo */
+#define BUS_ERROR_SNOOP_RDS	0x0000000000020000UL /* Tomatillo */
+#define BUS_ERROR_SNOOP_RDSA	0x0000000000010000UL /* Tomatillo */
+#define BUS_ERROR_SNOOP_OWN	0x0000000000008000UL /* Tomatillo */
+#define BUS_ERROR_SNOOP_RDO	0x0000000000004000UL /* Tomatillo */
+#define BUS_ERROR_CPU1PS	0x0000000000002000UL /* Safari */
+#define BUS_ERROR_WDATA_PERR	0x0000000000002000UL /* Tomatillo */
+#define BUS_ERROR_CPU1PB	0x0000000000001000UL /* Safari */
+#define BUS_ERROR_CTRL_PERR	0x0000000000001000UL /* Tomatillo */
+#define BUS_ERROR_CPU0PS	0x0000000000000800UL /* Safari */
+#define BUS_ERROR_SNOOP_ERR	0x0000000000000800UL /* Tomatillo */
+#define BUS_ERROR_CPU0PB	0x0000000000000400UL /* Safari */
+#define BUS_ERROR_JBUS_ILL_B	0x0000000000000400UL /* Tomatillo */
+#define BUS_ERROR_CIQTO		0x0000000000000200UL /* Safari */
+#define BUS_ERROR_LPQTO		0x0000000000000100UL /* Safari */
+#define BUS_ERROR_JBUS_ILL_C	0x0000000000000100UL /* Tomatillo */
+#define BUS_ERROR_SFPQTO	0x0000000000000080UL /* Safari */
+#define BUS_ERROR_UFPQTO	0x0000000000000040UL /* Safari */
+#define BUS_ERROR_RD_PERR	0x0000000000000040UL /* Tomatillo */
+#define BUS_ERROR_APERR		0x0000000000000020UL /* Safari/Tomatillo */
+#define BUS_ERROR_UNMAP		0x0000000000000010UL /* Safari/Tomatillo */
+#define BUS_ERROR_BUSERR	0x0000000000000004UL /* Safari/Tomatillo */
+#define BUS_ERROR_TIMEOUT	0x0000000000000002UL /* Safari/Tomatillo */
+#define BUS_ERROR_ILL		0x0000000000000001UL /* Safari */
+
+/* We only expect UNMAP errors here.  The rest of the Safari errors
+ * are marked fatal and thus cause a system reset.
+ */
+static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	u64 errlog;
+
+	errlog = upa_readq(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
+	upa_writeq(errlog & ~(SAFARI_ERRLOG_ERROUT),
+		   pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
+
+	if (!(errlog & BUS_ERROR_UNMAP)) {
+		printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n",
+		       pbm->name, errlog);
+
+		return IRQ_HANDLED;
+	}
+
+	printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n",
+	       pbm->name);
+	schizo_check_iommu_error(pbm, SAFARI_ERR);
+
+	return IRQ_HANDLED;
+}
+
+/* Nearly identical to PSYCHO equivalents... */
+#define SCHIZO_ECC_CTRL		0x10020UL
+#define  SCHIZO_ECCCTRL_EE	 0x8000000000000000UL /* Enable ECC Checking */
+#define  SCHIZO_ECCCTRL_UE	 0x4000000000000000UL /* Enable UE Interrupts */
+#define  SCHIZO_ECCCTRL_CE	 0x2000000000000000UL /* Enable CE INterrupts */
+
+#define SCHIZO_SAFARI_ERRCTRL	0x10008UL
+#define  SCHIZO_SAFERRCTRL_EN	 0x8000000000000000UL
+#define SCHIZO_SAFARI_IRQCTRL	0x10010UL
+#define  SCHIZO_SAFIRQCTRL_EN	 0x8000000000000000UL
+
+static int pbm_routes_this_ino(struct pci_pbm_info *pbm, u32 ino)
+{
+	ino &= IMAP_INO;
+
+	if (pbm->ino_bitmap & (1UL << ino))
+		return 1;
+
+	return 0;
+}
+
+/* How the Tomatillo IRQs are routed around is pure guesswork here.
+ *
+ * All the Tomatillo devices I see in prtconf dumps seem to have only
+ * a single PCI bus unit attached to it.  It would seem they are separate
+ * devices because their PortID (ie. JBUS ID) values are all different
+ * and thus the registers are mapped to totally different locations.
+ *
+ * However, two Tomatillo's look "similar" in that the only difference
+ * in their PortID is the lowest bit.
+ *
+ * So if we were to ignore this lower bit, it certainly looks like two
+ * PCI bus units of the same Tomatillo.  I still have not really
+ * figured this out...
+ */
+static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)
+{
+	struct of_device *op = of_find_device_by_node(pbm->op->node);
+	u64 tmp, err_mask, err_no_mask;
+	int err;
+
+	/* Tomatillo IRQ property layout is:
+	 * 0: PCIERR
+	 * 1: UE ERR
+	 * 2: CE ERR
+	 * 3: SERR
+	 * 4: POWER FAIL?
+	 */
+
+	if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
+		err = request_irq(op->irqs[1], schizo_ue_intr, 0,
+				  "TOMATILLO_UE", pbm);
+		if (err)
+			printk(KERN_WARNING "%s: Could not register UE, "
+			       "err=%d\n", pbm->name, err);
+	}
+	if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
+		err = request_irq(op->irqs[2], schizo_ce_intr, 0,
+				  "TOMATILLO_CE", pbm);
+		if (err)
+			printk(KERN_WARNING "%s: Could not register CE, "
+			       "err=%d\n", pbm->name, err);
+	}
+	err = 0;
+	if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
+		err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
+				  "TOMATILLO_PCIERR", pbm);
+	} else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
+		err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
+				  "TOMATILLO_PCIERR", pbm);
+	}
+	if (err)
+		printk(KERN_WARNING "%s: Could not register PCIERR, "
+		       "err=%d\n", pbm->name, err);
+
+	if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
+		err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
+				  "TOMATILLO_SERR", pbm);
+		if (err)
+			printk(KERN_WARNING "%s: Could not register SERR, "
+			       "err=%d\n", pbm->name, err);
+	}
+
+	/* Enable UE and CE interrupts for controller. */
+	upa_writeq((SCHIZO_ECCCTRL_EE |
+		    SCHIZO_ECCCTRL_UE |
+		    SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);
+
+	/* Enable PCI Error interrupts and clear error
+	 * bits.
+	 */
+	err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
+		    SCHIZO_PCICTRL_TTO_ERR |
+		    SCHIZO_PCICTRL_RTRY_ERR |
+		    SCHIZO_PCICTRL_SERR |
+		    SCHIZO_PCICTRL_EEN);
+
+	err_no_mask = SCHIZO_PCICTRL_DTO_ERR;
+
+	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
+	tmp |= err_mask;
+	tmp &= ~err_no_mask;
+	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
+
+	err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
+		    SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
+		    SCHIZO_PCIAFSR_PTTO |
+		    SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
+		    SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
+		    SCHIZO_PCIAFSR_STTO);
+
+	upa_writeq(err_mask, pbm->pbm_regs + SCHIZO_PCI_AFSR);
+
+	err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR |
+		    BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD |
+		    BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA |
+		    BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO |
+		    BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR |
+		    BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B |
+		    BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR |
+		    BUS_ERROR_APERR | BUS_ERROR_UNMAP |
+		    BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT);
+
+	upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
+		   pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);
+
+	upa_writeq((SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)),
+		   pbm->controller_regs + SCHIZO_SAFARI_IRQCTRL);
+}
+
+static void schizo_register_error_handlers(struct pci_pbm_info *pbm)
+{
+	struct of_device *op = of_find_device_by_node(pbm->op->node);
+	u64 tmp, err_mask, err_no_mask;
+	int err;
+
+	/* Schizo IRQ property layout is:
+	 * 0: PCIERR
+	 * 1: UE ERR
+	 * 2: CE ERR
+	 * 3: SERR
+	 * 4: POWER FAIL?
+	 */
+
+	if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
+		err = request_irq(op->irqs[1], schizo_ue_intr, 0,
+				  "SCHIZO_UE", pbm);
+		if (err)
+			printk(KERN_WARNING "%s: Could not register UE, "
+			       "err=%d\n", pbm->name, err);
+	}
+	if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
+		err = request_irq(op->irqs[2], schizo_ce_intr, 0,
+				  "SCHIZO_CE", pbm);
+		if (err)
+			printk(KERN_WARNING "%s: Could not register CE, "
+			       "err=%d\n", pbm->name, err);
+	}
+	err = 0;
+	if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
+		err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
+				  "SCHIZO_PCIERR", pbm);
+	} else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
+		err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
+				  "SCHIZO_PCIERR", pbm);
+	}
+	if (err)
+		printk(KERN_WARNING "%s: Could not register PCIERR, "
+		       "err=%d\n", pbm->name, err);
+
+	if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
+		err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
+				  "SCHIZO_SERR", pbm);
+		if (err)
+			printk(KERN_WARNING "%s: Could not register SERR, "
+			       "err=%d\n", pbm->name, err);
+	}
+
+	/* Enable UE and CE interrupts for controller. */
+	upa_writeq((SCHIZO_ECCCTRL_EE |
+		    SCHIZO_ECCCTRL_UE |
+		    SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);
+
+	err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
+		    SCHIZO_PCICTRL_ESLCK |
+		    SCHIZO_PCICTRL_TTO_ERR |
+		    SCHIZO_PCICTRL_RTRY_ERR |
+		    SCHIZO_PCICTRL_SBH_ERR |
+		    SCHIZO_PCICTRL_SERR |
+		    SCHIZO_PCICTRL_EEN);
+
+	err_no_mask = (SCHIZO_PCICTRL_DTO_ERR |
+		       SCHIZO_PCICTRL_SBH_INT);
+
+	/* Enable PCI Error interrupts and clear error
+	 * bits for each PBM.
+	 */
+	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
+	tmp |= err_mask;
+	tmp &= ~err_no_mask;
+	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
+
+	upa_writeq((SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
+		    SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
+		    SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
+		    SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
+		    SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
+		    SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS),
+		   pbm->pbm_regs + SCHIZO_PCI_AFSR);
+
+	/* Make all Safari error conditions fatal except unmapped
+	 * errors which we make generate interrupts.
+	 */
+	err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS |
+		    BUS_ERROR_BADMA | BUS_ERROR_BADMB |
+		    BUS_ERROR_BADMC |
+		    BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
+		    BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB |
+		    BUS_ERROR_CIQTO |
+		    BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO |
+		    BUS_ERROR_UFPQTO | BUS_ERROR_APERR |
+		    BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT |
+		    BUS_ERROR_ILL);
+#if 1
+	/* XXX Something wrong with some Excalibur systems
+	 * XXX Sun is shipping.  The behavior on a 2-cpu
+	 * XXX machine is that both CPU1 parity error bits
+	 * XXX are set and are immediately set again when
+	 * XXX their error status bits are cleared.  Just
+	 * XXX ignore them for now.  -DaveM
+	 */
+	err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
+		      BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB);
+#endif
+
+	upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
+		   pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);
+}
+
+static void pbm_config_busmastering(struct pci_pbm_info *pbm)
+{
+	u8 *addr;
+
+	/* Set cache-line size to 64 bytes, this is actually
+	 * a nop but I do it for completeness.
+	 */
+	addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
+					0, PCI_CACHE_LINE_SIZE);
+	pci_config_write8(addr, 64 / sizeof(u32));
+
+	/* Set PBM latency timer to 64 PCI clocks. */
+	addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
+					0, PCI_LATENCY_TIMER);
+	pci_config_write8(addr, 64);
+}
+
+static void __devinit schizo_scan_bus(struct pci_pbm_info *pbm,
+				      struct device *parent)
+{
+	pbm_config_busmastering(pbm);
+	pbm->is_66mhz_capable =
+		(of_find_property(pbm->op->node, "66mhz-capable", NULL)
+		 != NULL);
+
+	pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
+
+	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
+		tomatillo_register_error_handlers(pbm);
+	else
+		schizo_register_error_handlers(pbm);
+}
+
+#define SCHIZO_STRBUF_CONTROL		(0x02800UL)
+#define SCHIZO_STRBUF_FLUSH		(0x02808UL)
+#define SCHIZO_STRBUF_FSYNC		(0x02810UL)
+#define SCHIZO_STRBUF_CTXFLUSH		(0x02818UL)
+#define SCHIZO_STRBUF_CTXMATCH		(0x10000UL)
+
+static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
+{
+	unsigned long base = pbm->pbm_regs;
+	u64 control;
+
+	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
+		/* TOMATILLO lacks streaming cache.  */
+		return;
+	}
+
+	/* SCHIZO has context flushing. */
+	pbm->stc.strbuf_control		= base + SCHIZO_STRBUF_CONTROL;
+	pbm->stc.strbuf_pflush		= base + SCHIZO_STRBUF_FLUSH;
+	pbm->stc.strbuf_fsync		= base + SCHIZO_STRBUF_FSYNC;
+	pbm->stc.strbuf_ctxflush	= base + SCHIZO_STRBUF_CTXFLUSH;
+	pbm->stc.strbuf_ctxmatch_base	= base + SCHIZO_STRBUF_CTXMATCH;
+
+	pbm->stc.strbuf_flushflag = (volatile unsigned long *)
+		((((unsigned long)&pbm->stc.__flushflag_buf[0])
+		  + 63UL)
+		 & ~63UL);
+	pbm->stc.strbuf_flushflag_pa = (unsigned long)
+		__pa(pbm->stc.strbuf_flushflag);
+
+	/* Turn off LRU locking and diag mode, enable the
+	 * streaming buffer and leave the rerun-disable
+	 * setting however OBP set it.
+	 */
+	control = upa_readq(pbm->stc.strbuf_control);
+	control &= ~(SCHIZO_STRBUF_CTRL_LPTR |
+		     SCHIZO_STRBUF_CTRL_LENAB |
+		     SCHIZO_STRBUF_CTRL_DENAB);
+	control |= SCHIZO_STRBUF_CTRL_ENAB;
+	upa_writeq(control, pbm->stc.strbuf_control);
+
+	pbm->stc.strbuf_enabled = 1;
+}
+
+#define SCHIZO_IOMMU_CONTROL		(0x00200UL)
+#define SCHIZO_IOMMU_TSBBASE		(0x00208UL)
+#define SCHIZO_IOMMU_FLUSH		(0x00210UL)
+#define SCHIZO_IOMMU_CTXFLUSH		(0x00218UL)
+
+static int schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
+{
+	static const u32 vdma_default[] = { 0xc0000000, 0x40000000 };
+	unsigned long i, tagbase, database;
+	struct iommu *iommu = pbm->iommu;
+	int tsbsize, err;
+	const u32 *vdma;
+	u32 dma_mask;
+	u64 control;
+
+	vdma = of_get_property(pbm->op->node, "virtual-dma", NULL);
+	if (!vdma)
+		vdma = vdma_default;
+
+	dma_mask = vdma[0];
+	switch (vdma[1]) {
+		case 0x20000000:
+			dma_mask |= 0x1fffffff;
+			tsbsize = 64;
+			break;
+
+		case 0x40000000:
+			dma_mask |= 0x3fffffff;
+			tsbsize = 128;
+			break;
+
+		case 0x80000000:
+			dma_mask |= 0x7fffffff;
+			tsbsize = 128;
+			break;
+
+		default:
+			printk(KERN_ERR PFX "Strange virtual-dma size.\n");
+			return -EINVAL;
+	}
+
+	/* Register addresses, SCHIZO has iommu ctx flushing. */
+	iommu->iommu_control  = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
+	iommu->iommu_tsbbase  = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
+	iommu->iommu_flush    = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH;
+	iommu->iommu_tags     = iommu->iommu_flush + (0xa580UL - 0x0210UL);
+	iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH;
+
+	/* We use the main control/status register of SCHIZO as the write
+	 * completion register.
+	 */
+	iommu->write_complete_reg = pbm->controller_regs + 0x10000UL;
+
+	/*
+	 * Invalidate TLB Entries.
+	 */
+	control = upa_readq(iommu->iommu_control);
+	control |= SCHIZO_IOMMU_CTRL_DENAB;
+	upa_writeq(control, iommu->iommu_control);
+
+	tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;
+
+	for (i = 0; i < 16; i++) {
+		upa_writeq(0, pbm->pbm_regs + tagbase + (i * 8UL));
+		upa_writeq(0, pbm->pbm_regs + database + (i * 8UL));
+	}
+
+	/* Leave diag mode enabled for full-flushing done
+	 * in pci_iommu.c
+	 */
+	err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask,
+			       pbm->numa_node);
+	if (err) {
+		printk(KERN_ERR PFX "iommu_table_init() fails with %d\n", err);
+		return err;
+	}
+
+	upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
+
+	control = upa_readq(iommu->iommu_control);
+	control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
+	switch (tsbsize) {
+	case 64:
+		control |= SCHIZO_IOMMU_TSBSZ_64K;
+		break;
+	case 128:
+		control |= SCHIZO_IOMMU_TSBSZ_128K;
+		break;
+	}
+
+	control |= SCHIZO_IOMMU_CTRL_ENAB;
+	upa_writeq(control, iommu->iommu_control);
+
+	return 0;
+}
+
+#define SCHIZO_PCI_IRQ_RETRY	(0x1a00UL)
+#define  SCHIZO_IRQ_RETRY_INF	 0xffUL
+
+#define SCHIZO_PCI_DIAG			(0x2020UL)
+#define  SCHIZO_PCIDIAG_D_BADECC	(1UL << 10UL) /* Disable BAD ECC errors (Schizo) */
+#define  SCHIZO_PCIDIAG_D_BYPASS	(1UL <<  9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */
+#define  SCHIZO_PCIDIAG_D_TTO		(1UL <<  8UL) /* Disable TTO errors (Schizo/Tomatillo) */
+#define  SCHIZO_PCIDIAG_D_RTRYARB	(1UL <<  7UL) /* Disable retry arbitration (Schizo) */
+#define  SCHIZO_PCIDIAG_D_RETRY		(1UL <<  6UL) /* Disable retry limit (Schizo/Tomatillo) */
+#define  SCHIZO_PCIDIAG_D_INTSYNC	(1UL <<  5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */
+#define  SCHIZO_PCIDIAG_I_DMA_PARITY	(1UL <<  3UL) /* Invert DMA parity (Schizo/Tomatillo) */
+#define  SCHIZO_PCIDIAG_I_PIOD_PARITY	(1UL <<  2UL) /* Invert PIO data parity (Schizo/Tomatillo) */
+#define  SCHIZO_PCIDIAG_I_PIOA_PARITY	(1UL <<  1UL) /* Invert PIO address parity (Schizo/Tomatillo) */
+
+#define TOMATILLO_PCI_IOC_CSR		(0x2248UL)
+#define TOMATILLO_IOC_PART_WPENAB	0x0000000000080000UL
+#define TOMATILLO_IOC_RDMULT_PENAB	0x0000000000040000UL
+#define TOMATILLO_IOC_RDONE_PENAB	0x0000000000020000UL
+#define TOMATILLO_IOC_RDLINE_PENAB	0x0000000000010000UL
+#define TOMATILLO_IOC_RDMULT_PLEN	0x000000000000c000UL
+#define TOMATILLO_IOC_RDMULT_PLEN_SHIFT	14UL
+#define TOMATILLO_IOC_RDONE_PLEN	0x0000000000003000UL
+#define TOMATILLO_IOC_RDONE_PLEN_SHIFT	12UL
+#define TOMATILLO_IOC_RDLINE_PLEN	0x0000000000000c00UL
+#define TOMATILLO_IOC_RDLINE_PLEN_SHIFT	10UL
+#define TOMATILLO_IOC_PREF_OFF		0x00000000000003f8UL
+#define TOMATILLO_IOC_PREF_OFF_SHIFT	3UL
+#define TOMATILLO_IOC_RDMULT_CPENAB	0x0000000000000004UL
+#define TOMATILLO_IOC_RDONE_CPENAB	0x0000000000000002UL
+#define TOMATILLO_IOC_RDLINE_CPENAB	0x0000000000000001UL
+
+#define TOMATILLO_PCI_IOC_TDIAG		(0x2250UL)
+#define TOMATILLO_PCI_IOC_DDIAG		(0x2290UL)
+
+static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
+{
+	u64 tmp;
+
+	upa_writeq(5, pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY);
+
+	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
+
+	/* Enable arbiter for all PCI slots.  */
+	tmp |= 0xff;
+
+	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
+	    pbm->chip_version >= 0x2)
+		tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
+
+	if (!of_find_property(pbm->op->node, "no-bus-parking", NULL))
+		tmp |= SCHIZO_PCICTRL_PARK;
+	else
+		tmp &= ~SCHIZO_PCICTRL_PARK;
+
+	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
+	    pbm->chip_version <= 0x1)
+		tmp |= SCHIZO_PCICTRL_DTO_INT;
+	else
+		tmp &= ~SCHIZO_PCICTRL_DTO_INT;
+
+	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
+		tmp |= (SCHIZO_PCICTRL_MRM_PREF |
+			SCHIZO_PCICTRL_RDO_PREF |
+			SCHIZO_PCICTRL_RDL_PREF);
+
+	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
+
+	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_DIAG);
+	tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB |
+		 SCHIZO_PCIDIAG_D_RETRY |
+		 SCHIZO_PCIDIAG_D_INTSYNC);
+	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_DIAG);
+
+	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
+		/* Clear prefetch lengths to workaround a bug in
+		 * Jalapeno...
+		 */
+		tmp = (TOMATILLO_IOC_PART_WPENAB |
+		       (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) |
+		       TOMATILLO_IOC_RDMULT_CPENAB |
+		       TOMATILLO_IOC_RDONE_CPENAB |
+		       TOMATILLO_IOC_RDLINE_CPENAB);
+
+		upa_writeq(tmp, pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR);
+	}
+}
+
+static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm,
+				     struct of_device *op, u32 portid,
+				     int chip_type)
+{
+	const struct linux_prom64_registers *regs;
+	struct device_node *dp = op->node;
+	const char *chipset_name;
+	int is_pbm_a, err;
+
+	switch (chip_type) {
+	case PBM_CHIP_TYPE_TOMATILLO:
+		chipset_name = "TOMATILLO";
+		break;
+
+	case PBM_CHIP_TYPE_SCHIZO_PLUS:
+		chipset_name = "SCHIZO+";
+		break;
+
+	case PBM_CHIP_TYPE_SCHIZO:
+	default:
+		chipset_name = "SCHIZO";
+		break;
+	};
+
+	/* For SCHIZO, three OBP regs:
+	 * 1) PBM controller regs
+	 * 2) Schizo front-end controller regs (same for both PBMs)
+	 * 3) PBM PCI config space
+	 *
+	 * For TOMATILLO, four OBP regs:
+	 * 1) PBM controller regs
+	 * 2) Tomatillo front-end controller regs
+	 * 3) PBM PCI config space
+	 * 4) Ichip regs
+	 */
+	regs = of_get_property(dp, "reg", NULL);
+
+	is_pbm_a = ((regs[0].phys_addr & 0x00700000) == 0x00600000);
+
+	pbm->next = pci_pbm_root;
+	pci_pbm_root = pbm;
+
+	pbm->numa_node = -1;
+
+	pbm->pci_ops = &sun4u_pci_ops;
+	pbm->config_space_reg_bits = 8;
+
+	pbm->index = pci_num_pbms++;
+
+	pbm->portid = portid;
+	pbm->op = op;
+
+	pbm->chip_type = chip_type;
+	pbm->chip_version = of_getintprop_default(dp, "version#", 0);
+	pbm->chip_revision = of_getintprop_default(dp, "module-version#", 0);
+
+	pbm->pbm_regs = regs[0].phys_addr;
+	pbm->controller_regs = regs[1].phys_addr - 0x10000UL;
+
+	if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
+		pbm->sync_reg = regs[3].phys_addr + 0x1a18UL;
+
+	pbm->name = dp->full_name;
+
+	printk("%s: %s PCI Bus Module ver[%x:%x]\n",
+	       pbm->name, chipset_name,
+	       pbm->chip_version, pbm->chip_revision);
+
+	schizo_pbm_hw_init(pbm);
+
+	pci_determine_mem_io_space(pbm);
+
+	pci_get_pbm_props(pbm);
+
+	err = schizo_pbm_iommu_init(pbm);
+	if (err)
+		return err;
+
+	schizo_pbm_strbuf_init(pbm);
+
+	schizo_scan_bus(pbm, &op->dev);
+
+	return 0;
+}
+
+static inline int portid_compare(u32 x, u32 y, int chip_type)
+{
+	if (chip_type == PBM_CHIP_TYPE_TOMATILLO) {
+		if (x == (y ^ 1))
+			return 1;
+		return 0;
+	}
+	return (x == y);
+}
+
+static struct pci_pbm_info * __devinit schizo_find_sibling(u32 portid,
+							   int chip_type)
+{
+	struct pci_pbm_info *pbm;
+
+	for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
+		if (portid_compare(pbm->portid, portid, chip_type))
+			return pbm;
+	}
+	return NULL;
+}
+
+static int __devinit __schizo_init(struct of_device *op, unsigned long chip_type)
+{
+	struct device_node *dp = op->node;
+	struct pci_pbm_info *pbm;
+	struct iommu *iommu;
+	u32 portid;
+	int err;
+
+	portid = of_getintprop_default(dp, "portid", 0xff);
+
+	err = -ENOMEM;
+	pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
+	if (!pbm) {
+		printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
+		goto out_err;
+	}
+
+	pbm->sibling = schizo_find_sibling(portid, chip_type);
+
+	iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
+	if (!iommu) {
+		printk(KERN_ERR PFX "Cannot allocate PBM A iommu.\n");
+		goto out_free_pbm;
+	}
+
+	pbm->iommu = iommu;
+
+	if (schizo_pbm_init(pbm, op, portid, chip_type))
+		goto out_free_iommu;
+
+	if (pbm->sibling)
+		pbm->sibling->sibling = pbm;
+
+	dev_set_drvdata(&op->dev, pbm);
+
+	return 0;
+
+out_free_iommu:
+	kfree(pbm->iommu);
+
+out_free_pbm:
+	kfree(pbm);
+
+out_err:
+	return err;
+}
+
+static int __devinit schizo_probe(struct of_device *op,
+				  const struct of_device_id *match)
+{
+	return __schizo_init(op, (unsigned long) match->data);
+}
+
+/* The ordering of this table is very important.  Some Tomatillo
+ * nodes announce that they are compatible with both pci108e,a801
+ * and pci108e,8001.  So list the chips in reverse chronological
+ * order.
+ */
+static struct of_device_id __initdata schizo_match[] = {
+	{
+		.name = "pci",
+		.compatible = "pci108e,a801",
+		.data = (void *) PBM_CHIP_TYPE_TOMATILLO,
+	},
+	{
+		.name = "pci",
+		.compatible = "pci108e,8002",
+		.data = (void *) PBM_CHIP_TYPE_SCHIZO_PLUS,
+	},
+	{
+		.name = "pci",
+		.compatible = "pci108e,8001",
+		.data = (void *) PBM_CHIP_TYPE_SCHIZO,
+	},
+	{},
+};
+
+static struct of_platform_driver schizo_driver = {
+	.name		= DRIVER_NAME,
+	.match_table	= schizo_match,
+	.probe		= schizo_probe,
+};
+
+static int __init schizo_init(void)
+{
+	return of_register_driver(&schizo_driver, &of_bus_type);
+}
+
+subsys_initcall(schizo_init);
diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c
new file mode 100644
index 000000000000..34a1fded3941
--- /dev/null
+++ b/arch/sparc/kernel/pci_sun4v.c
@@ -0,0 +1,1033 @@
+/* pci_sun4v.c: SUN4V specific PCI controller support.
+ *
+ * Copyright (C) 2006, 2007, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/percpu.h>
+#include <linux/irq.h>
+#include <linux/msi.h>
+#include <linux/log2.h>
+#include <linux/of_device.h>
+
+#include <asm/iommu.h>
+#include <asm/irq.h>
+#include <asm/hypervisor.h>
+#include <asm/prom.h>
+
+#include "pci_impl.h"
+#include "iommu_common.h"
+
+#include "pci_sun4v.h"
+
+#define DRIVER_NAME	"pci_sun4v"
+#define PFX		DRIVER_NAME ": "
+
+static unsigned long vpci_major = 1;
+static unsigned long vpci_minor = 1;
+
+#define PGLIST_NENTS	(PAGE_SIZE / sizeof(u64))
+
+struct iommu_batch {
+	struct device	*dev;		/* Device mapping is for.	*/
+	unsigned long	prot;		/* IOMMU page protections	*/
+	unsigned long	entry;		/* Index into IOTSB.		*/
+	u64		*pglist;	/* List of physical pages	*/
+	unsigned long	npages;		/* Number of pages in list.	*/
+};
+
+static DEFINE_PER_CPU(struct iommu_batch, iommu_batch);
+static int iommu_batch_initialized;
+
+/* Interrupts must be disabled.  */
+static inline void iommu_batch_start(struct device *dev, unsigned long prot, unsigned long entry)
+{
+	struct iommu_batch *p = &__get_cpu_var(iommu_batch);
+
+	p->dev		= dev;
+	p->prot		= prot;
+	p->entry	= entry;
+	p->npages	= 0;
+}
+
+/* Interrupts must be disabled.  */
+static long iommu_batch_flush(struct iommu_batch *p)
+{
+	struct pci_pbm_info *pbm = p->dev->archdata.host_controller;
+	unsigned long devhandle = pbm->devhandle;
+	unsigned long prot = p->prot;
+	unsigned long entry = p->entry;
+	u64 *pglist = p->pglist;
+	unsigned long npages = p->npages;
+
+	while (npages != 0) {
+		long num;
+
+		num = pci_sun4v_iommu_map(devhandle, HV_PCI_TSBID(0, entry),
+					  npages, prot, __pa(pglist));
+		if (unlikely(num < 0)) {
+			if (printk_ratelimit())
+				printk("iommu_batch_flush: IOMMU map of "
+				       "[%08lx:%08lx:%lx:%lx:%lx] failed with "
+				       "status %ld\n",
+				       devhandle, HV_PCI_TSBID(0, entry),
+				       npages, prot, __pa(pglist), num);
+			return -1;
+		}
+
+		entry += num;
+		npages -= num;
+		pglist += num;
+	}
+
+	p->entry = entry;
+	p->npages = 0;
+
+	return 0;
+}
+
+static inline void iommu_batch_new_entry(unsigned long entry)
+{
+	struct iommu_batch *p = &__get_cpu_var(iommu_batch);
+
+	if (p->entry + p->npages == entry)
+		return;
+	if (p->entry != ~0UL)
+		iommu_batch_flush(p);
+	p->entry = entry;
+}
+
+/* Interrupts must be disabled.  */
+static inline long iommu_batch_add(u64 phys_page)
+{
+	struct iommu_batch *p = &__get_cpu_var(iommu_batch);
+
+	BUG_ON(p->npages >= PGLIST_NENTS);
+
+	p->pglist[p->npages++] = phys_page;
+	if (p->npages == PGLIST_NENTS)
+		return iommu_batch_flush(p);
+
+	return 0;
+}
+
+/* Interrupts must be disabled.  */
+static inline long iommu_batch_end(void)
+{
+	struct iommu_batch *p = &__get_cpu_var(iommu_batch);
+
+	BUG_ON(p->npages >= PGLIST_NENTS);
+
+	return iommu_batch_flush(p);
+}
+
+static void *dma_4v_alloc_coherent(struct device *dev, size_t size,
+				   dma_addr_t *dma_addrp, gfp_t gfp)
+{
+	unsigned long flags, order, first_page, npages, n;
+	struct iommu *iommu;
+	struct page *page;
+	void *ret;
+	long entry;
+	int nid;
+
+	size = IO_PAGE_ALIGN(size);
+	order = get_order(size);
+	if (unlikely(order >= MAX_ORDER))
+		return NULL;
+
+	npages = size >> IO_PAGE_SHIFT;
+
+	nid = dev->archdata.numa_node;
+	page = alloc_pages_node(nid, gfp, order);
+	if (unlikely(!page))
+		return NULL;
+
+	first_page = (unsigned long) page_address(page);
+	memset((char *)first_page, 0, PAGE_SIZE << order);
+
+	iommu = dev->archdata.iommu;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	entry = iommu_range_alloc(dev, iommu, npages, NULL);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	if (unlikely(entry == DMA_ERROR_CODE))
+		goto range_alloc_fail;
+
+	*dma_addrp = (iommu->page_table_map_base +
+		      (entry << IO_PAGE_SHIFT));
+	ret = (void *) first_page;
+	first_page = __pa(first_page);
+
+	local_irq_save(flags);
+
+	iommu_batch_start(dev,
+			  (HV_PCI_MAP_ATTR_READ |
+			   HV_PCI_MAP_ATTR_WRITE),
+			  entry);
+
+	for (n = 0; n < npages; n++) {
+		long err = iommu_batch_add(first_page + (n * PAGE_SIZE));
+		if (unlikely(err < 0L))
+			goto iommu_map_fail;
+	}
+
+	if (unlikely(iommu_batch_end() < 0L))
+		goto iommu_map_fail;
+
+	local_irq_restore(flags);
+
+	return ret;
+
+iommu_map_fail:
+	/* Interrupts are disabled.  */
+	spin_lock(&iommu->lock);
+	iommu_range_free(iommu, *dma_addrp, npages);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+range_alloc_fail:
+	free_pages(first_page, order);
+	return NULL;
+}
+
+static void dma_4v_free_coherent(struct device *dev, size_t size, void *cpu,
+				 dma_addr_t dvma)
+{
+	struct pci_pbm_info *pbm;
+	struct iommu *iommu;
+	unsigned long flags, order, npages, entry;
+	u32 devhandle;
+
+	npages = IO_PAGE_ALIGN(size) >> IO_PAGE_SHIFT;
+	iommu = dev->archdata.iommu;
+	pbm = dev->archdata.host_controller;
+	devhandle = pbm->devhandle;
+	entry = ((dvma - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	iommu_range_free(iommu, dvma, npages);
+
+	do {
+		unsigned long num;
+
+		num = pci_sun4v_iommu_demap(devhandle, HV_PCI_TSBID(0, entry),
+					    npages);
+		entry += num;
+		npages -= num;
+	} while (npages != 0);
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	order = get_order(size);
+	if (order < 10)
+		free_pages((unsigned long)cpu, order);
+}
+
+static dma_addr_t dma_4v_map_single(struct device *dev, void *ptr, size_t sz,
+				    enum dma_data_direction direction)
+{
+	struct iommu *iommu;
+	unsigned long flags, npages, oaddr;
+	unsigned long i, base_paddr;
+	u32 bus_addr, ret;
+	unsigned long prot;
+	long entry;
+
+	iommu = dev->archdata.iommu;
+
+	if (unlikely(direction == DMA_NONE))
+		goto bad;
+
+	oaddr = (unsigned long)ptr;
+	npages = IO_PAGE_ALIGN(oaddr + sz) - (oaddr & IO_PAGE_MASK);
+	npages >>= IO_PAGE_SHIFT;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	entry = iommu_range_alloc(dev, iommu, npages, NULL);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	if (unlikely(entry == DMA_ERROR_CODE))
+		goto bad;
+
+	bus_addr = (iommu->page_table_map_base +
+		    (entry << IO_PAGE_SHIFT));
+	ret = bus_addr | (oaddr & ~IO_PAGE_MASK);
+	base_paddr = __pa(oaddr & IO_PAGE_MASK);
+	prot = HV_PCI_MAP_ATTR_READ;
+	if (direction != DMA_TO_DEVICE)
+		prot |= HV_PCI_MAP_ATTR_WRITE;
+
+	local_irq_save(flags);
+
+	iommu_batch_start(dev, prot, entry);
+
+	for (i = 0; i < npages; i++, base_paddr += IO_PAGE_SIZE) {
+		long err = iommu_batch_add(base_paddr);
+		if (unlikely(err < 0L))
+			goto iommu_map_fail;
+	}
+	if (unlikely(iommu_batch_end() < 0L))
+		goto iommu_map_fail;
+
+	local_irq_restore(flags);
+
+	return ret;
+
+bad:
+	if (printk_ratelimit())
+		WARN_ON(1);
+	return DMA_ERROR_CODE;
+
+iommu_map_fail:
+	/* Interrupts are disabled.  */
+	spin_lock(&iommu->lock);
+	iommu_range_free(iommu, bus_addr, npages);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	return DMA_ERROR_CODE;
+}
+
+static void dma_4v_unmap_single(struct device *dev, dma_addr_t bus_addr,
+				size_t sz, enum dma_data_direction direction)
+{
+	struct pci_pbm_info *pbm;
+	struct iommu *iommu;
+	unsigned long flags, npages;
+	long entry;
+	u32 devhandle;
+
+	if (unlikely(direction == DMA_NONE)) {
+		if (printk_ratelimit())
+			WARN_ON(1);
+		return;
+	}
+
+	iommu = dev->archdata.iommu;
+	pbm = dev->archdata.host_controller;
+	devhandle = pbm->devhandle;
+
+	npages = IO_PAGE_ALIGN(bus_addr + sz) - (bus_addr & IO_PAGE_MASK);
+	npages >>= IO_PAGE_SHIFT;
+	bus_addr &= IO_PAGE_MASK;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	iommu_range_free(iommu, bus_addr, npages);
+
+	entry = (bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT;
+	do {
+		unsigned long num;
+
+		num = pci_sun4v_iommu_demap(devhandle, HV_PCI_TSBID(0, entry),
+					    npages);
+		entry += num;
+		npages -= num;
+	} while (npages != 0);
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
+			 int nelems, enum dma_data_direction direction)
+{
+	struct scatterlist *s, *outs, *segstart;
+	unsigned long flags, handle, prot;
+	dma_addr_t dma_next = 0, dma_addr;
+	unsigned int max_seg_size;
+	unsigned long seg_boundary_size;
+	int outcount, incount, i;
+	struct iommu *iommu;
+	unsigned long base_shift;
+	long err;
+
+	BUG_ON(direction == DMA_NONE);
+
+	iommu = dev->archdata.iommu;
+	if (nelems == 0 || !iommu)
+		return 0;
+	
+	prot = HV_PCI_MAP_ATTR_READ;
+	if (direction != DMA_TO_DEVICE)
+		prot |= HV_PCI_MAP_ATTR_WRITE;
+
+	outs = s = segstart = &sglist[0];
+	outcount = 1;
+	incount = nelems;
+	handle = 0;
+
+	/* Init first segment length for backout at failure */
+	outs->dma_length = 0;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	iommu_batch_start(dev, prot, ~0UL);
+
+	max_seg_size = dma_get_max_seg_size(dev);
+	seg_boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
+				  IO_PAGE_SIZE) >> IO_PAGE_SHIFT;
+	base_shift = iommu->page_table_map_base >> IO_PAGE_SHIFT;
+	for_each_sg(sglist, s, nelems, i) {
+		unsigned long paddr, npages, entry, out_entry = 0, slen;
+
+		slen = s->length;
+		/* Sanity check */
+		if (slen == 0) {
+			dma_next = 0;
+			continue;
+		}
+		/* Allocate iommu entries for that segment */
+		paddr = (unsigned long) SG_ENT_PHYS_ADDRESS(s);
+		npages = iommu_num_pages(paddr, slen, IO_PAGE_SIZE);
+		entry = iommu_range_alloc(dev, iommu, npages, &handle);
+
+		/* Handle failure */
+		if (unlikely(entry == DMA_ERROR_CODE)) {
+			if (printk_ratelimit())
+				printk(KERN_INFO "iommu_alloc failed, iommu %p paddr %lx"
+				       " npages %lx\n", iommu, paddr, npages);
+			goto iommu_map_failed;
+		}
+
+		iommu_batch_new_entry(entry);
+
+		/* Convert entry to a dma_addr_t */
+		dma_addr = iommu->page_table_map_base +
+			(entry << IO_PAGE_SHIFT);
+		dma_addr |= (s->offset & ~IO_PAGE_MASK);
+
+		/* Insert into HW table */
+		paddr &= IO_PAGE_MASK;
+		while (npages--) {
+			err = iommu_batch_add(paddr);
+			if (unlikely(err < 0L))
+				goto iommu_map_failed;
+			paddr += IO_PAGE_SIZE;
+		}
+
+		/* If we are in an open segment, try merging */
+		if (segstart != s) {
+			/* We cannot merge if:
+			 * - allocated dma_addr isn't contiguous to previous allocation
+			 */
+			if ((dma_addr != dma_next) ||
+			    (outs->dma_length + s->length > max_seg_size) ||
+			    (is_span_boundary(out_entry, base_shift,
+					      seg_boundary_size, outs, s))) {
+				/* Can't merge: create a new segment */
+				segstart = s;
+				outcount++;
+				outs = sg_next(outs);
+			} else {
+				outs->dma_length += s->length;
+			}
+		}
+
+		if (segstart == s) {
+			/* This is a new segment, fill entries */
+			outs->dma_address = dma_addr;
+			outs->dma_length = slen;
+			out_entry = entry;
+		}
+
+		/* Calculate next page pointer for contiguous check */
+		dma_next = dma_addr + slen;
+	}
+
+	err = iommu_batch_end();
+
+	if (unlikely(err < 0L))
+		goto iommu_map_failed;
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	if (outcount < incount) {
+		outs = sg_next(outs);
+		outs->dma_address = DMA_ERROR_CODE;
+		outs->dma_length = 0;
+	}
+
+	return outcount;
+
+iommu_map_failed:
+	for_each_sg(sglist, s, nelems, i) {
+		if (s->dma_length != 0) {
+			unsigned long vaddr, npages;
+
+			vaddr = s->dma_address & IO_PAGE_MASK;
+			npages = iommu_num_pages(s->dma_address, s->dma_length,
+						 IO_PAGE_SIZE);
+			iommu_range_free(iommu, vaddr, npages);
+			/* XXX demap? XXX */
+			s->dma_address = DMA_ERROR_CODE;
+			s->dma_length = 0;
+		}
+		if (s == outs)
+			break;
+	}
+	spin_unlock_irqrestore(&iommu->lock, flags);
+
+	return 0;
+}
+
+static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist,
+			    int nelems, enum dma_data_direction direction)
+{
+	struct pci_pbm_info *pbm;
+	struct scatterlist *sg;
+	struct iommu *iommu;
+	unsigned long flags;
+	u32 devhandle;
+
+	BUG_ON(direction == DMA_NONE);
+
+	iommu = dev->archdata.iommu;
+	pbm = dev->archdata.host_controller;
+	devhandle = pbm->devhandle;
+	
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	sg = sglist;
+	while (nelems--) {
+		dma_addr_t dma_handle = sg->dma_address;
+		unsigned int len = sg->dma_length;
+		unsigned long npages, entry;
+
+		if (!len)
+			break;
+		npages = iommu_num_pages(dma_handle, len, IO_PAGE_SIZE);
+		iommu_range_free(iommu, dma_handle, npages);
+
+		entry = ((dma_handle - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
+		while (npages) {
+			unsigned long num;
+
+			num = pci_sun4v_iommu_demap(devhandle, HV_PCI_TSBID(0, entry),
+						    npages);
+			entry += num;
+			npages -= num;
+		}
+
+		sg = sg_next(sg);
+	}
+
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+static void dma_4v_sync_single_for_cpu(struct device *dev,
+				       dma_addr_t bus_addr, size_t sz,
+				       enum dma_data_direction direction)
+{
+	/* Nothing to do... */
+}
+
+static void dma_4v_sync_sg_for_cpu(struct device *dev,
+				   struct scatterlist *sglist, int nelems,
+				   enum dma_data_direction direction)
+{
+	/* Nothing to do... */
+}
+
+static const struct dma_ops sun4v_dma_ops = {
+	.alloc_coherent			= dma_4v_alloc_coherent,
+	.free_coherent			= dma_4v_free_coherent,
+	.map_single			= dma_4v_map_single,
+	.unmap_single			= dma_4v_unmap_single,
+	.map_sg				= dma_4v_map_sg,
+	.unmap_sg			= dma_4v_unmap_sg,
+	.sync_single_for_cpu		= dma_4v_sync_single_for_cpu,
+	.sync_sg_for_cpu		= dma_4v_sync_sg_for_cpu,
+};
+
+static void __init pci_sun4v_scan_bus(struct pci_pbm_info *pbm,
+				      struct device *parent)
+{
+	struct property *prop;
+	struct device_node *dp;
+
+	dp = pbm->op->node;
+	prop = of_find_property(dp, "66mhz-capable", NULL);
+	pbm->is_66mhz_capable = (prop != NULL);
+	pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
+
+	/* XXX register error interrupt handlers XXX */
+}
+
+static unsigned long __init probe_existing_entries(struct pci_pbm_info *pbm,
+						   struct iommu *iommu)
+{
+	struct iommu_arena *arena = &iommu->arena;
+	unsigned long i, cnt = 0;
+	u32 devhandle;
+
+	devhandle = pbm->devhandle;
+	for (i = 0; i < arena->limit; i++) {
+		unsigned long ret, io_attrs, ra;
+
+		ret = pci_sun4v_iommu_getmap(devhandle,
+					     HV_PCI_TSBID(0, i),
+					     &io_attrs, &ra);
+		if (ret == HV_EOK) {
+			if (page_in_phys_avail(ra)) {
+				pci_sun4v_iommu_demap(devhandle,
+						      HV_PCI_TSBID(0, i), 1);
+			} else {
+				cnt++;
+				__set_bit(i, arena->map);
+			}
+		}
+	}
+
+	return cnt;
+}
+
+static int __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
+{
+	static const u32 vdma_default[] = { 0x80000000, 0x80000000 };
+	struct iommu *iommu = pbm->iommu;
+	unsigned long num_tsb_entries, sz, tsbsize;
+	u32 dma_mask, dma_offset;
+	const u32 *vdma;
+
+	vdma = of_get_property(pbm->op->node, "virtual-dma", NULL);
+	if (!vdma)
+		vdma = vdma_default;
+
+	if ((vdma[0] | vdma[1]) & ~IO_PAGE_MASK) {
+		printk(KERN_ERR PFX "Strange virtual-dma[%08x:%08x].\n",
+		       vdma[0], vdma[1]);
+		return -EINVAL;
+	};
+
+	dma_mask = (roundup_pow_of_two(vdma[1]) - 1UL);
+	num_tsb_entries = vdma[1] / IO_PAGE_SIZE;
+	tsbsize = num_tsb_entries * sizeof(iopte_t);
+
+	dma_offset = vdma[0];
+
+	/* Setup initial software IOMMU state. */
+	spin_lock_init(&iommu->lock);
+	iommu->ctx_lowest_free = 1;
+	iommu->page_table_map_base = dma_offset;
+	iommu->dma_addr_mask = dma_mask;
+
+	/* Allocate and initialize the free area map.  */
+	sz = (num_tsb_entries + 7) / 8;
+	sz = (sz + 7UL) & ~7UL;
+	iommu->arena.map = kzalloc(sz, GFP_KERNEL);
+	if (!iommu->arena.map) {
+		printk(KERN_ERR PFX "Error, kmalloc(arena.map) failed.\n");
+		return -ENOMEM;
+	}
+	iommu->arena.limit = num_tsb_entries;
+
+	sz = probe_existing_entries(pbm, iommu);
+	if (sz)
+		printk("%s: Imported %lu TSB entries from OBP\n",
+		       pbm->name, sz);
+
+	return 0;
+}
+
+#ifdef CONFIG_PCI_MSI
+struct pci_sun4v_msiq_entry {
+	u64		version_type;
+#define MSIQ_VERSION_MASK		0xffffffff00000000UL
+#define MSIQ_VERSION_SHIFT		32
+#define MSIQ_TYPE_MASK			0x00000000000000ffUL
+#define MSIQ_TYPE_SHIFT			0
+#define MSIQ_TYPE_NONE			0x00
+#define MSIQ_TYPE_MSG			0x01
+#define MSIQ_TYPE_MSI32			0x02
+#define MSIQ_TYPE_MSI64			0x03
+#define MSIQ_TYPE_INTX			0x08
+#define MSIQ_TYPE_NONE2			0xff
+
+	u64		intx_sysino;
+	u64		reserved1;
+	u64		stick;
+	u64		req_id;  /* bus/device/func */
+#define MSIQ_REQID_BUS_MASK		0xff00UL
+#define MSIQ_REQID_BUS_SHIFT		8
+#define MSIQ_REQID_DEVICE_MASK		0x00f8UL
+#define MSIQ_REQID_DEVICE_SHIFT		3
+#define MSIQ_REQID_FUNC_MASK		0x0007UL
+#define MSIQ_REQID_FUNC_SHIFT		0
+
+	u64		msi_address;
+
+	/* The format of this value is message type dependent.
+	 * For MSI bits 15:0 are the data from the MSI packet.
+	 * For MSI-X bits 31:0 are the data from the MSI packet.
+	 * For MSG, the message code and message routing code where:
+	 * 	bits 39:32 is the bus/device/fn of the msg target-id
+	 *	bits 18:16 is the message routing code
+	 *	bits 7:0 is the message code
+	 * For INTx the low order 2-bits are:
+	 *	00 - INTA
+	 *	01 - INTB
+	 *	10 - INTC
+	 *	11 - INTD
+	 */
+	u64		msi_data;
+
+	u64		reserved2;
+};
+
+static int pci_sun4v_get_head(struct pci_pbm_info *pbm, unsigned long msiqid,
+			      unsigned long *head)
+{
+	unsigned long err, limit;
+
+	err = pci_sun4v_msiq_gethead(pbm->devhandle, msiqid, head);
+	if (unlikely(err))
+		return -ENXIO;
+
+	limit = pbm->msiq_ent_count * sizeof(struct pci_sun4v_msiq_entry);
+	if (unlikely(*head >= limit))
+		return -EFBIG;
+
+	return 0;
+}
+
+static int pci_sun4v_dequeue_msi(struct pci_pbm_info *pbm,
+				 unsigned long msiqid, unsigned long *head,
+				 unsigned long *msi)
+{
+	struct pci_sun4v_msiq_entry *ep;
+	unsigned long err, type;
+
+	/* Note: void pointer arithmetic, 'head' is a byte offset  */
+	ep = (pbm->msi_queues + ((msiqid - pbm->msiq_first) *
+				 (pbm->msiq_ent_count *
+				  sizeof(struct pci_sun4v_msiq_entry))) +
+	      *head);
+
+	if ((ep->version_type & MSIQ_TYPE_MASK) == 0)
+		return 0;
+
+	type = (ep->version_type & MSIQ_TYPE_MASK) >> MSIQ_TYPE_SHIFT;
+	if (unlikely(type != MSIQ_TYPE_MSI32 &&
+		     type != MSIQ_TYPE_MSI64))
+		return -EINVAL;
+
+	*msi = ep->msi_data;
+
+	err = pci_sun4v_msi_setstate(pbm->devhandle,
+				     ep->msi_data /* msi_num */,
+				     HV_MSISTATE_IDLE);
+	if (unlikely(err))
+		return -ENXIO;
+
+	/* Clear the entry.  */
+	ep->version_type &= ~MSIQ_TYPE_MASK;
+
+	(*head) += sizeof(struct pci_sun4v_msiq_entry);
+	if (*head >=
+	    (pbm->msiq_ent_count * sizeof(struct pci_sun4v_msiq_entry)))
+		*head = 0;
+
+	return 1;
+}
+
+static int pci_sun4v_set_head(struct pci_pbm_info *pbm, unsigned long msiqid,
+			      unsigned long head)
+{
+	unsigned long err;
+
+	err = pci_sun4v_msiq_sethead(pbm->devhandle, msiqid, head);
+	if (unlikely(err))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int pci_sun4v_msi_setup(struct pci_pbm_info *pbm, unsigned long msiqid,
+			       unsigned long msi, int is_msi64)
+{
+	if (pci_sun4v_msi_setmsiq(pbm->devhandle, msi, msiqid,
+				  (is_msi64 ?
+				   HV_MSITYPE_MSI64 : HV_MSITYPE_MSI32)))
+		return -ENXIO;
+	if (pci_sun4v_msi_setstate(pbm->devhandle, msi, HV_MSISTATE_IDLE))
+		return -ENXIO;
+	if (pci_sun4v_msi_setvalid(pbm->devhandle, msi, HV_MSIVALID_VALID))
+		return -ENXIO;
+	return 0;
+}
+
+static int pci_sun4v_msi_teardown(struct pci_pbm_info *pbm, unsigned long msi)
+{
+	unsigned long err, msiqid;
+
+	err = pci_sun4v_msi_getmsiq(pbm->devhandle, msi, &msiqid);
+	if (err)
+		return -ENXIO;
+
+	pci_sun4v_msi_setvalid(pbm->devhandle, msi, HV_MSIVALID_INVALID);
+
+	return 0;
+}
+
+static int pci_sun4v_msiq_alloc(struct pci_pbm_info *pbm)
+{
+	unsigned long q_size, alloc_size, pages, order;
+	int i;
+
+	q_size = pbm->msiq_ent_count * sizeof(struct pci_sun4v_msiq_entry);
+	alloc_size = (pbm->msiq_num * q_size);
+	order = get_order(alloc_size);
+	pages = __get_free_pages(GFP_KERNEL | __GFP_COMP, order);
+	if (pages == 0UL) {
+		printk(KERN_ERR "MSI: Cannot allocate MSI queues (o=%lu).\n",
+		       order);
+		return -ENOMEM;
+	}
+	memset((char *)pages, 0, PAGE_SIZE << order);
+	pbm->msi_queues = (void *) pages;
+
+	for (i = 0; i < pbm->msiq_num; i++) {
+		unsigned long err, base = __pa(pages + (i * q_size));
+		unsigned long ret1, ret2;
+
+		err = pci_sun4v_msiq_conf(pbm->devhandle,
+					  pbm->msiq_first + i,
+					  base, pbm->msiq_ent_count);
+		if (err) {
+			printk(KERN_ERR "MSI: msiq register fails (err=%lu)\n",
+			       err);
+			goto h_error;
+		}
+
+		err = pci_sun4v_msiq_info(pbm->devhandle,
+					  pbm->msiq_first + i,
+					  &ret1, &ret2);
+		if (err) {
+			printk(KERN_ERR "MSI: Cannot read msiq (err=%lu)\n",
+			       err);
+			goto h_error;
+		}
+		if (ret1 != base || ret2 != pbm->msiq_ent_count) {
+			printk(KERN_ERR "MSI: Bogus qconf "
+			       "expected[%lx:%x] got[%lx:%lx]\n",
+			       base, pbm->msiq_ent_count,
+			       ret1, ret2);
+			goto h_error;
+		}
+	}
+
+	return 0;
+
+h_error:
+	free_pages(pages, order);
+	return -EINVAL;
+}
+
+static void pci_sun4v_msiq_free(struct pci_pbm_info *pbm)
+{
+	unsigned long q_size, alloc_size, pages, order;
+	int i;
+
+	for (i = 0; i < pbm->msiq_num; i++) {
+		unsigned long msiqid = pbm->msiq_first + i;
+
+		(void) pci_sun4v_msiq_conf(pbm->devhandle, msiqid, 0UL, 0);
+	}
+
+	q_size = pbm->msiq_ent_count * sizeof(struct pci_sun4v_msiq_entry);
+	alloc_size = (pbm->msiq_num * q_size);
+	order = get_order(alloc_size);
+
+	pages = (unsigned long) pbm->msi_queues;
+
+	free_pages(pages, order);
+
+	pbm->msi_queues = NULL;
+}
+
+static int pci_sun4v_msiq_build_irq(struct pci_pbm_info *pbm,
+				    unsigned long msiqid,
+				    unsigned long devino)
+{
+	unsigned int virt_irq = sun4v_build_irq(pbm->devhandle, devino);
+
+	if (!virt_irq)
+		return -ENOMEM;
+
+	if (pci_sun4v_msiq_setstate(pbm->devhandle, msiqid, HV_MSIQSTATE_IDLE))
+		return -EINVAL;
+	if (pci_sun4v_msiq_setvalid(pbm->devhandle, msiqid, HV_MSIQ_VALID))
+		return -EINVAL;
+
+	return virt_irq;
+}
+
+static const struct sparc64_msiq_ops pci_sun4v_msiq_ops = {
+	.get_head	=	pci_sun4v_get_head,
+	.dequeue_msi	=	pci_sun4v_dequeue_msi,
+	.set_head	=	pci_sun4v_set_head,
+	.msi_setup	=	pci_sun4v_msi_setup,
+	.msi_teardown	=	pci_sun4v_msi_teardown,
+	.msiq_alloc	=	pci_sun4v_msiq_alloc,
+	.msiq_free	=	pci_sun4v_msiq_free,
+	.msiq_build_irq	=	pci_sun4v_msiq_build_irq,
+};
+
+static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
+{
+	sparc64_pbm_msi_init(pbm, &pci_sun4v_msiq_ops);
+}
+#else /* CONFIG_PCI_MSI */
+static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
+{
+}
+#endif /* !(CONFIG_PCI_MSI) */
+
+static int __init pci_sun4v_pbm_init(struct pci_pbm_info *pbm,
+				     struct of_device *op, u32 devhandle)
+{
+	struct device_node *dp = op->node;
+	int err;
+
+	pbm->numa_node = of_node_to_nid(dp);
+
+	pbm->pci_ops = &sun4v_pci_ops;
+	pbm->config_space_reg_bits = 12;
+
+	pbm->index = pci_num_pbms++;
+
+	pbm->op = op;
+
+	pbm->devhandle = devhandle;
+
+	pbm->name = dp->full_name;
+
+	printk("%s: SUN4V PCI Bus Module\n", pbm->name);
+	printk("%s: On NUMA node %d\n", pbm->name, pbm->numa_node);
+
+	pci_determine_mem_io_space(pbm);
+
+	pci_get_pbm_props(pbm);
+
+	err = pci_sun4v_iommu_init(pbm);
+	if (err)
+		return err;
+
+	pci_sun4v_msi_init(pbm);
+
+	pci_sun4v_scan_bus(pbm, &op->dev);
+
+	pbm->next = pci_pbm_root;
+	pci_pbm_root = pbm;
+
+	return 0;
+}
+
+static int __devinit pci_sun4v_probe(struct of_device *op,
+				     const struct of_device_id *match)
+{
+	const struct linux_prom64_registers *regs;
+	static int hvapi_negotiated = 0;
+	struct pci_pbm_info *pbm;
+	struct device_node *dp;
+	struct iommu *iommu;
+	u32 devhandle;
+	int i, err;
+
+	dp = op->node;
+
+	if (!hvapi_negotiated++) {
+		err = sun4v_hvapi_register(HV_GRP_PCI,
+					   vpci_major,
+					   &vpci_minor);
+
+		if (err) {
+			printk(KERN_ERR PFX "Could not register hvapi, "
+			       "err=%d\n", err);
+			return err;
+		}
+		printk(KERN_INFO PFX "Registered hvapi major[%lu] minor[%lu]\n",
+		       vpci_major, vpci_minor);
+
+		dma_ops = &sun4v_dma_ops;
+	}
+
+	regs = of_get_property(dp, "reg", NULL);
+	err = -ENODEV;
+	if (!regs) {
+		printk(KERN_ERR PFX "Could not find config registers\n");
+		goto out_err;
+	}
+	devhandle = (regs->phys_addr >> 32UL) & 0x0fffffff;
+
+	err = -ENOMEM;
+	if (!iommu_batch_initialized) {
+		for_each_possible_cpu(i) {
+			unsigned long page = get_zeroed_page(GFP_KERNEL);
+
+			if (!page)
+				goto out_err;
+
+			per_cpu(iommu_batch, i).pglist = (u64 *) page;
+		}
+		iommu_batch_initialized = 1;
+	}
+
+	pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
+	if (!pbm) {
+		printk(KERN_ERR PFX "Could not allocate pci_pbm_info\n");
+		goto out_err;
+	}
+
+	iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
+	if (!iommu) {
+		printk(KERN_ERR PFX "Could not allocate pbm iommu\n");
+		goto out_free_controller;
+	}
+
+	pbm->iommu = iommu;
+
+	err = pci_sun4v_pbm_init(pbm, op, devhandle);
+	if (err)
+		goto out_free_iommu;
+
+	dev_set_drvdata(&op->dev, pbm);
+
+	return 0;
+
+out_free_iommu:
+	kfree(pbm->iommu);
+
+out_free_controller:
+	kfree(pbm);
+
+out_err:
+	return err;
+}
+
+static struct of_device_id __initdata pci_sun4v_match[] = {
+	{
+		.name = "pci",
+		.compatible = "SUNW,sun4v-pci",
+	},
+	{},
+};
+
+static struct of_platform_driver pci_sun4v_driver = {
+	.name		= DRIVER_NAME,
+	.match_table	= pci_sun4v_match,
+	.probe		= pci_sun4v_probe,
+};
+
+static int __init pci_sun4v_init(void)
+{
+	return of_register_driver(&pci_sun4v_driver, &of_bus_type);
+}
+
+subsys_initcall(pci_sun4v_init);
diff --git a/arch/sparc/kernel/pci_sun4v.h b/arch/sparc/kernel/pci_sun4v.h
new file mode 100644
index 000000000000..8e9fc3a5b4f5
--- /dev/null
+++ b/arch/sparc/kernel/pci_sun4v.h
@@ -0,0 +1,92 @@
+/* pci_sun4v.h: SUN4V specific PCI controller support.
+ *
+ * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ */
+
+#ifndef _PCI_SUN4V_H
+#define _PCI_SUN4V_H
+
+extern long pci_sun4v_iommu_map(unsigned long devhandle,
+				unsigned long tsbid,
+				unsigned long num_ttes,
+				unsigned long io_attributes,
+				unsigned long io_page_list_pa);
+extern unsigned long pci_sun4v_iommu_demap(unsigned long devhandle,
+					   unsigned long tsbid,
+					   unsigned long num_ttes);
+extern unsigned long pci_sun4v_iommu_getmap(unsigned long devhandle,
+					    unsigned long tsbid,
+					    unsigned long *io_attributes,
+					    unsigned long *real_address);
+extern unsigned long pci_sun4v_config_get(unsigned long devhandle,
+					  unsigned long pci_device,
+					  unsigned long config_offset,
+					  unsigned long size);
+extern int pci_sun4v_config_put(unsigned long devhandle,
+				unsigned long pci_device,
+				unsigned long config_offset,
+				unsigned long size,
+				unsigned long data);
+
+extern unsigned long pci_sun4v_msiq_conf(unsigned long devhandle,
+					 unsigned long msiqid,
+					 unsigned long msiq_paddr,
+					 unsigned long num_entries);
+extern unsigned long pci_sun4v_msiq_info(unsigned long devhandle,
+					 unsigned long msiqid,
+					 unsigned long *msiq_paddr,
+					 unsigned long *num_entries);
+extern unsigned long pci_sun4v_msiq_getvalid(unsigned long devhandle,
+					     unsigned long msiqid,
+					     unsigned long *valid);
+extern unsigned long pci_sun4v_msiq_setvalid(unsigned long devhandle,
+					     unsigned long msiqid,
+					     unsigned long valid);
+extern unsigned long pci_sun4v_msiq_getstate(unsigned long devhandle,
+					     unsigned long msiqid,
+					     unsigned long *state);
+extern unsigned long pci_sun4v_msiq_setstate(unsigned long devhandle,
+					     unsigned long msiqid,
+					     unsigned long state);
+extern unsigned long pci_sun4v_msiq_gethead(unsigned long devhandle,
+					     unsigned long msiqid,
+					     unsigned long *head);
+extern unsigned long pci_sun4v_msiq_sethead(unsigned long devhandle,
+					     unsigned long msiqid,
+					     unsigned long head);
+extern unsigned long pci_sun4v_msiq_gettail(unsigned long devhandle,
+					     unsigned long msiqid,
+					     unsigned long *head);
+extern unsigned long pci_sun4v_msi_getvalid(unsigned long devhandle,
+					    unsigned long msinum,
+					    unsigned long *valid);
+extern unsigned long pci_sun4v_msi_setvalid(unsigned long devhandle,
+					    unsigned long msinum,
+					    unsigned long valid);
+extern unsigned long pci_sun4v_msi_getmsiq(unsigned long devhandle,
+					   unsigned long msinum,
+					   unsigned long *msiq);
+extern unsigned long pci_sun4v_msi_setmsiq(unsigned long devhandle,
+					   unsigned long msinum,
+					   unsigned long msiq,
+					   unsigned long msitype);
+extern unsigned long pci_sun4v_msi_getstate(unsigned long devhandle,
+					    unsigned long msinum,
+					    unsigned long *state);
+extern unsigned long pci_sun4v_msi_setstate(unsigned long devhandle,
+					    unsigned long msinum,
+					    unsigned long state);
+extern unsigned long pci_sun4v_msg_getmsiq(unsigned long devhandle,
+					   unsigned long msinum,
+					   unsigned long *msiq);
+extern unsigned long pci_sun4v_msg_setmsiq(unsigned long devhandle,
+					   unsigned long msinum,
+					   unsigned long msiq);
+extern unsigned long pci_sun4v_msg_getvalid(unsigned long devhandle,
+					    unsigned long msinum,
+					    unsigned long *valid);
+extern unsigned long pci_sun4v_msg_setvalid(unsigned long devhandle,
+					    unsigned long msinum,
+					    unsigned long valid);
+
+#endif /* !(_PCI_SUN4V_H) */
diff --git a/arch/sparc/kernel/pci_sun4v_asm.S b/arch/sparc/kernel/pci_sun4v_asm.S
new file mode 100644
index 000000000000..e606d46c6815
--- /dev/null
+++ b/arch/sparc/kernel/pci_sun4v_asm.S
@@ -0,0 +1,362 @@
+/* pci_sun4v_asm: Hypervisor calls for PCI support.
+ *
+ * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/linkage.h>
+#include <asm/hypervisor.h>
+
+	/* %o0: devhandle
+	 * %o1:	tsbid
+	 * %o2:	num ttes
+	 * %o3:	io_attributes
+	 * %o4:	io_page_list phys address
+	 *
+	 * returns %o0:	-status if status was non-zero, else
+	 *         %o0:	num pages mapped
+	 */
+ENTRY(pci_sun4v_iommu_map)
+	mov	%o5, %g1
+	mov	HV_FAST_PCI_IOMMU_MAP, %o5
+	ta	HV_FAST_TRAP
+	brnz,pn %o0, 1f
+	 sub	%g0, %o0, %o0
+	mov	%o1, %o0
+1:	retl
+	 nop
+ENDPROC(pci_sun4v_iommu_map)
+
+	/* %o0: devhandle
+	 * %o1:	tsbid
+	 * %o2:	num ttes
+	 *
+	 * returns %o0:	num ttes demapped
+	 */
+ENTRY(pci_sun4v_iommu_demap)
+	mov	HV_FAST_PCI_IOMMU_DEMAP, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o1, %o0
+ENDPROC(pci_sun4v_iommu_demap)
+
+	/* %o0: devhandle
+	 * %o1:	tsbid
+	 * %o2:	&io_attributes
+	 * %o3:	&real_address
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(pci_sun4v_iommu_getmap)
+	mov	%o2, %o4
+	mov	HV_FAST_PCI_IOMMU_GETMAP, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	stx	%o2, [%o3]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_iommu_getmap)
+
+	/* %o0: devhandle
+	 * %o1:	pci_device
+	 * %o2:	pci_config_offset
+	 * %o3:	size
+	 *
+	 * returns %o0:	data
+	 *
+	 * If there is an error, the data will be returned
+	 * as all 1's.
+	 */
+ENTRY(pci_sun4v_config_get)
+	mov	HV_FAST_PCI_CONFIG_GET, %o5
+	ta	HV_FAST_TRAP
+	brnz,a,pn %o1, 1f
+	 mov	-1, %o2
+1:	retl
+	 mov	%o2, %o0
+ENDPROC(pci_sun4v_config_get)
+
+	/* %o0: devhandle
+	 * %o1:	pci_device
+	 * %o2:	pci_config_offset
+	 * %o3:	size
+	 * %o4:	data
+	 *
+	 * returns %o0:	status
+	 *
+	 * status will be zero if the operation completed
+	 * successfully, else -1 if not
+	 */
+ENTRY(pci_sun4v_config_put)
+	mov	HV_FAST_PCI_CONFIG_PUT, %o5
+	ta	HV_FAST_TRAP
+	brnz,a,pn %o1, 1f
+	 mov	-1, %o1
+1:	retl
+	 mov	%o1, %o0
+ENDPROC(pci_sun4v_config_put)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2: msiq phys address
+	 * %o3: num entries
+	 *
+	 * returns %o0: status
+	 *
+	 * status will be zero if the operation completed
+	 * successfully, else -1 if not
+	 */
+ENTRY(pci_sun4v_msiq_conf)
+	mov	HV_FAST_PCI_MSIQ_CONF, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_conf)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&msiq_phys_addr
+	 * %o3:	&msiq_num_entries
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_info)
+	mov	%o2, %o4
+	mov	HV_FAST_PCI_MSIQ_INFO, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	stx	%o2, [%o3]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_info)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_getvalid)
+	mov	HV_FAST_PCI_MSIQ_GETVALID, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_getvalid)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_setvalid)
+	mov	HV_FAST_PCI_MSIQ_SETVALID, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_setvalid)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_getstate)
+	mov	HV_FAST_PCI_MSIQ_GETSTATE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_getstate)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_setstate)
+	mov	HV_FAST_PCI_MSIQ_SETSTATE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_setstate)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&head
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_gethead)
+	mov	HV_FAST_PCI_MSIQ_GETHEAD, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_gethead)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	head
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_sethead)
+	mov	HV_FAST_PCI_MSIQ_SETHEAD, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_sethead)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&tail
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_gettail)
+	mov	HV_FAST_PCI_MSIQ_GETTAIL, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_gettail)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_getvalid)
+	mov	HV_FAST_PCI_MSI_GETVALID, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_getvalid)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_setvalid)
+	mov	HV_FAST_PCI_MSI_SETVALID, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_setvalid)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&msiq
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_getmsiq)
+	mov	HV_FAST_PCI_MSI_GETMSIQ, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_getmsiq)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	msitype
+	 * %o3:	msiq
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_setmsiq)
+	mov	HV_FAST_PCI_MSI_SETMSIQ, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_setmsiq)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_getstate)
+	mov	HV_FAST_PCI_MSI_GETSTATE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_getstate)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_setstate)
+	mov	HV_FAST_PCI_MSI_SETSTATE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_setstate)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&msiq
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msg_getmsiq)
+	mov	HV_FAST_PCI_MSG_GETMSIQ, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msg_getmsiq)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	msiq
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msg_setmsiq)
+	mov	HV_FAST_PCI_MSG_SETMSIQ, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msg_setmsiq)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msg_getvalid)
+	mov	HV_FAST_PCI_MSG_GETVALID, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msg_getvalid)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msg_setvalid)
+	mov	HV_FAST_PCI_MSG_SETVALID, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msg_setvalid)
+
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index 462584e55fba..75ed98be3edf 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -436,7 +436,7 @@ int pcic_present(void)
 	return pcic0_up;
 }
 
-static int __init pdev_to_pnode(struct linux_pbm_info *pbm, 
+static int __devinit pdev_to_pnode(struct linux_pbm_info *pbm,
 				    struct pci_dev *pdev)
 {
 	struct linux_prom_pci_registers regs[PROMREG_MAX];
diff --git a/arch/sparc/kernel/pmc.c b/arch/sparc/kernel/pmc.c
index 2afcfab4f11c..5e4563d86f19 100644
--- a/arch/sparc/kernel/pmc.c
+++ b/arch/sparc/kernel/pmc.c
@@ -24,32 +24,32 @@
  */
 
 #define PMC_OBPNAME	"SUNW,pmc"
-#define PMC_DEVNAME "pmc"
+#define PMC_DEVNAME	"pmc"
 
 #define PMC_IDLE_REG	0x00
-#define PMC_IDLE_ON		0x01
+#define PMC_IDLE_ON	0x01
 
 static u8 __iomem *regs;
 
 #define pmc_readb(offs)		(sbus_readb(regs+offs))
-#define pmc_writeb(val, offs) 	(sbus_writeb(val, regs+offs))
+#define pmc_writeb(val, offs)	(sbus_writeb(val, regs+offs))
 
-/* 
+/*
  * CPU idle callback function
  * See .../arch/sparc/kernel/process.c
  */
-void pmc_swift_idle(void)
+static void pmc_swift_idle(void)
 {
 #ifdef PMC_DEBUG_LED
-	set_auxio(0x00, AUXIO_LED); 
+	set_auxio(0x00, AUXIO_LED);
 #endif
 
 	pmc_writeb(pmc_readb(PMC_IDLE_REG) | PMC_IDLE_ON, PMC_IDLE_REG);
 
 #ifdef PMC_DEBUG_LED
-	set_auxio(AUXIO_LED, 0x00); 
+	set_auxio(AUXIO_LED, 0x00);
 #endif
-} 
+}
 
 static int __devinit pmc_probe(struct of_device *op,
 			       const struct of_device_id *match)
@@ -63,7 +63,7 @@ static int __devinit pmc_probe(struct of_device *op,
 
 #ifndef PMC_NO_IDLE
 	/* Assign power management IDLE handler */
-	pm_idle = pmc_swift_idle;	
+	pm_idle = pmc_swift_idle;
 #endif
 
 	printk(KERN_INFO "%s: power management initialized\n", PMC_DEVNAME);
diff --git a/arch/sparc/kernel/power.c b/arch/sparc/kernel/power.c
new file mode 100644
index 000000000000..076cad7f9757
--- /dev/null
+++ b/arch/sparc/kernel/power.c
@@ -0,0 +1,75 @@
+/* power.c: Power management driver.
+ *
+ * Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/reboot.h>
+#include <linux/of_device.h>
+
+#include <asm/prom.h>
+#include <asm/io.h>
+
+static void __iomem *power_reg;
+
+static irqreturn_t power_handler(int irq, void *dev_id)
+{
+	orderly_poweroff(true);
+
+	/* FIXME: Check registers for status... */
+	return IRQ_HANDLED;
+}
+
+static int __init has_button_interrupt(unsigned int irq, struct device_node *dp)
+{
+	if (irq == 0xffffffff)
+		return 0;
+	if (!of_find_property(dp, "button", NULL))
+		return 0;
+
+	return 1;
+}
+
+static int __devinit power_probe(struct of_device *op, const struct of_device_id *match)
+{
+	struct resource *res = &op->resource[0];
+	unsigned int irq= op->irqs[0];
+
+	power_reg = of_ioremap(res, 0, 0x4, "power");
+
+	printk(KERN_INFO "%s: Control reg at %lx\n",
+	       op->node->name, res->start);
+
+	if (has_button_interrupt(irq, op->node)) {
+		if (request_irq(irq,
+				power_handler, 0, "power", NULL) < 0)
+			printk(KERN_ERR "power: Cannot setup IRQ handler.\n");
+	}
+
+	return 0;
+}
+
+static struct of_device_id __initdata power_match[] = {
+	{
+		.name = "power",
+	},
+	{},
+};
+
+static struct of_platform_driver power_driver = {
+	.match_table	= power_match,
+	.probe		= power_probe,
+	.driver		= {
+		.name	= "power",
+	},
+};
+
+static int __init power_init(void)
+{
+	return of_register_driver(&power_driver, &of_platform_bus_type);
+}
+
+device_initcall(power_init);
diff --git a/arch/sparc/kernel/process.c b/arch/sparc/kernel/process_32.c
index e8c43ffe317e..69d9315f4a93 100644
--- a/arch/sparc/kernel/process.c
+++ b/arch/sparc/kernel/process_32.c
@@ -168,11 +168,9 @@ void machine_restart(char * cmd)
 
 void machine_power_off(void)
 {
-#ifdef CONFIG_SUN_AUXIO
 	if (auxio_power_register &&
 	    (strcmp(of_console_device->type, "serial") || scons_pwroff))
 		*auxio_power_register |= AUXIO_POWER_OFF;
-#endif
 	machine_halt();
 }
 
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
new file mode 100644
index 000000000000..d5e2acef9877
--- /dev/null
+++ b/arch/sparc/kernel/process_64.c
@@ -0,0 +1,812 @@
+/*  arch/sparc64/kernel/process.c
+ *
+ *  Copyright (C) 1995, 1996, 2008 David S. Miller (davem@davemloft.net)
+ *  Copyright (C) 1996       Eddie C. Dost   (ecd@skynet.be)
+ *  Copyright (C) 1997, 1998 Jakub Jelinek   (jj@sunsite.mff.cuni.cz)
+ */
+
+/*
+ * This file handles the architecture-dependent parts of process handling..
+ */
+
+#include <stdarg.h>
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/smp.h>
+#include <linux/stddef.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/user.h>
+#include <linux/delay.h>
+#include <linux/compat.h>
+#include <linux/tick.h>
+#include <linux/init.h>
+#include <linux/cpu.h>
+#include <linux/elfcore.h>
+#include <linux/sysrq.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/page.h>
+#include <asm/pgalloc.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/pstate.h>
+#include <asm/elf.h>
+#include <asm/fpumacro.h>
+#include <asm/head.h>
+#include <asm/cpudata.h>
+#include <asm/mmu_context.h>
+#include <asm/unistd.h>
+#include <asm/hypervisor.h>
+#include <asm/syscalls.h>
+#include <asm/irq_regs.h>
+#include <asm/smp.h>
+
+#include "kstack.h"
+
+static void sparc64_yield(int cpu)
+{
+	if (tlb_type != hypervisor)
+		return;
+
+	clear_thread_flag(TIF_POLLING_NRFLAG);
+	smp_mb__after_clear_bit();
+
+	while (!need_resched() && !cpu_is_offline(cpu)) {
+		unsigned long pstate;
+
+		/* Disable interrupts. */
+		__asm__ __volatile__(
+			"rdpr %%pstate, %0\n\t"
+			"andn %0, %1, %0\n\t"
+			"wrpr %0, %%g0, %%pstate"
+			: "=&r" (pstate)
+			: "i" (PSTATE_IE));
+
+		if (!need_resched() && !cpu_is_offline(cpu))
+			sun4v_cpu_yield();
+
+		/* Re-enable interrupts. */
+		__asm__ __volatile__(
+			"rdpr %%pstate, %0\n\t"
+			"or %0, %1, %0\n\t"
+			"wrpr %0, %%g0, %%pstate"
+			: "=&r" (pstate)
+			: "i" (PSTATE_IE));
+	}
+
+	set_thread_flag(TIF_POLLING_NRFLAG);
+}
+
+/* The idle loop on sparc64. */
+void cpu_idle(void)
+{
+	int cpu = smp_processor_id();
+
+	set_thread_flag(TIF_POLLING_NRFLAG);
+
+	while(1) {
+		tick_nohz_stop_sched_tick(1);
+
+		while (!need_resched() && !cpu_is_offline(cpu))
+			sparc64_yield(cpu);
+
+		tick_nohz_restart_sched_tick();
+
+		preempt_enable_no_resched();
+
+#ifdef CONFIG_HOTPLUG_CPU
+		if (cpu_is_offline(cpu))
+			cpu_play_dead();
+#endif
+
+		schedule();
+		preempt_disable();
+	}
+}
+
+#ifdef CONFIG_COMPAT
+static void show_regwindow32(struct pt_regs *regs)
+{
+	struct reg_window32 __user *rw;
+	struct reg_window32 r_w;
+	mm_segment_t old_fs;
+	
+	__asm__ __volatile__ ("flushw");
+	rw = compat_ptr((unsigned)regs->u_regs[14]);
+	old_fs = get_fs();
+	set_fs (USER_DS);
+	if (copy_from_user (&r_w, rw, sizeof(r_w))) {
+		set_fs (old_fs);
+		return;
+	}
+
+	set_fs (old_fs);			
+	printk("l0: %08x l1: %08x l2: %08x l3: %08x "
+	       "l4: %08x l5: %08x l6: %08x l7: %08x\n",
+	       r_w.locals[0], r_w.locals[1], r_w.locals[2], r_w.locals[3],
+	       r_w.locals[4], r_w.locals[5], r_w.locals[6], r_w.locals[7]);
+	printk("i0: %08x i1: %08x i2: %08x i3: %08x "
+	       "i4: %08x i5: %08x i6: %08x i7: %08x\n",
+	       r_w.ins[0], r_w.ins[1], r_w.ins[2], r_w.ins[3],
+	       r_w.ins[4], r_w.ins[5], r_w.ins[6], r_w.ins[7]);
+}
+#else
+#define show_regwindow32(regs)	do { } while (0)
+#endif
+
+static void show_regwindow(struct pt_regs *regs)
+{
+	struct reg_window __user *rw;
+	struct reg_window *rwk;
+	struct reg_window r_w;
+	mm_segment_t old_fs;
+
+	if ((regs->tstate & TSTATE_PRIV) || !(test_thread_flag(TIF_32BIT))) {
+		__asm__ __volatile__ ("flushw");
+		rw = (struct reg_window __user *)
+			(regs->u_regs[14] + STACK_BIAS);
+		rwk = (struct reg_window *)
+			(regs->u_regs[14] + STACK_BIAS);
+		if (!(regs->tstate & TSTATE_PRIV)) {
+			old_fs = get_fs();
+			set_fs (USER_DS);
+			if (copy_from_user (&r_w, rw, sizeof(r_w))) {
+				set_fs (old_fs);
+				return;
+			}
+			rwk = &r_w;
+			set_fs (old_fs);			
+		}
+	} else {
+		show_regwindow32(regs);
+		return;
+	}
+	printk("l0: %016lx l1: %016lx l2: %016lx l3: %016lx\n",
+	       rwk->locals[0], rwk->locals[1], rwk->locals[2], rwk->locals[3]);
+	printk("l4: %016lx l5: %016lx l6: %016lx l7: %016lx\n",
+	       rwk->locals[4], rwk->locals[5], rwk->locals[6], rwk->locals[7]);
+	printk("i0: %016lx i1: %016lx i2: %016lx i3: %016lx\n",
+	       rwk->ins[0], rwk->ins[1], rwk->ins[2], rwk->ins[3]);
+	printk("i4: %016lx i5: %016lx i6: %016lx i7: %016lx\n",
+	       rwk->ins[4], rwk->ins[5], rwk->ins[6], rwk->ins[7]);
+	if (regs->tstate & TSTATE_PRIV)
+		printk("I7: <%pS>\n", (void *) rwk->ins[7]);
+}
+
+void show_regs(struct pt_regs *regs)
+{
+	printk("TSTATE: %016lx TPC: %016lx TNPC: %016lx Y: %08x    %s\n", regs->tstate,
+	       regs->tpc, regs->tnpc, regs->y, print_tainted());
+	printk("TPC: <%pS>\n", (void *) regs->tpc);
+	printk("g0: %016lx g1: %016lx g2: %016lx g3: %016lx\n",
+	       regs->u_regs[0], regs->u_regs[1], regs->u_regs[2],
+	       regs->u_regs[3]);
+	printk("g4: %016lx g5: %016lx g6: %016lx g7: %016lx\n",
+	       regs->u_regs[4], regs->u_regs[5], regs->u_regs[6],
+	       regs->u_regs[7]);
+	printk("o0: %016lx o1: %016lx o2: %016lx o3: %016lx\n",
+	       regs->u_regs[8], regs->u_regs[9], regs->u_regs[10],
+	       regs->u_regs[11]);
+	printk("o4: %016lx o5: %016lx sp: %016lx ret_pc: %016lx\n",
+	       regs->u_regs[12], regs->u_regs[13], regs->u_regs[14],
+	       regs->u_regs[15]);
+	printk("RPC: <%pS>\n", (void *) regs->u_regs[15]);
+	show_regwindow(regs);
+}
+
+struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
+static DEFINE_SPINLOCK(global_reg_snapshot_lock);
+
+static void __global_reg_self(struct thread_info *tp, struct pt_regs *regs,
+			      int this_cpu)
+{
+	flushw_all();
+
+	global_reg_snapshot[this_cpu].tstate = regs->tstate;
+	global_reg_snapshot[this_cpu].tpc = regs->tpc;
+	global_reg_snapshot[this_cpu].tnpc = regs->tnpc;
+	global_reg_snapshot[this_cpu].o7 = regs->u_regs[UREG_I7];
+
+	if (regs->tstate & TSTATE_PRIV) {
+		struct reg_window *rw;
+
+		rw = (struct reg_window *)
+			(regs->u_regs[UREG_FP] + STACK_BIAS);
+		if (kstack_valid(tp, (unsigned long) rw)) {
+			global_reg_snapshot[this_cpu].i7 = rw->ins[7];
+			rw = (struct reg_window *)
+				(rw->ins[6] + STACK_BIAS);
+			if (kstack_valid(tp, (unsigned long) rw))
+				global_reg_snapshot[this_cpu].rpc = rw->ins[7];
+		}
+	} else {
+		global_reg_snapshot[this_cpu].i7 = 0;
+		global_reg_snapshot[this_cpu].rpc = 0;
+	}
+	global_reg_snapshot[this_cpu].thread = tp;
+}
+
+/* In order to avoid hangs we do not try to synchronize with the
+ * global register dump client cpus.  The last store they make is to
+ * the thread pointer, so do a short poll waiting for that to become
+ * non-NULL.
+ */
+static void __global_reg_poll(struct global_reg_snapshot *gp)
+{
+	int limit = 0;
+
+	while (!gp->thread && ++limit < 100) {
+		barrier();
+		udelay(1);
+	}
+}
+
+void __trigger_all_cpu_backtrace(void)
+{
+	struct thread_info *tp = current_thread_info();
+	struct pt_regs *regs = get_irq_regs();
+	unsigned long flags;
+	int this_cpu, cpu;
+
+	if (!regs)
+		regs = tp->kregs;
+
+	spin_lock_irqsave(&global_reg_snapshot_lock, flags);
+
+	memset(global_reg_snapshot, 0, sizeof(global_reg_snapshot));
+
+	this_cpu = raw_smp_processor_id();
+
+	__global_reg_self(tp, regs, this_cpu);
+
+	smp_fetch_global_regs();
+
+	for_each_online_cpu(cpu) {
+		struct global_reg_snapshot *gp = &global_reg_snapshot[cpu];
+
+		__global_reg_poll(gp);
+
+		tp = gp->thread;
+		printk("%c CPU[%3d]: TSTATE[%016lx] TPC[%016lx] TNPC[%016lx] TASK[%s:%d]\n",
+		       (cpu == this_cpu ? '*' : ' '), cpu,
+		       gp->tstate, gp->tpc, gp->tnpc,
+		       ((tp && tp->task) ? tp->task->comm : "NULL"),
+		       ((tp && tp->task) ? tp->task->pid : -1));
+
+		if (gp->tstate & TSTATE_PRIV) {
+			printk("             TPC[%pS] O7[%pS] I7[%pS] RPC[%pS]\n",
+			       (void *) gp->tpc,
+			       (void *) gp->o7,
+			       (void *) gp->i7,
+			       (void *) gp->rpc);
+		} else {
+			printk("             TPC[%lx] O7[%lx] I7[%lx] RPC[%lx]\n",
+			       gp->tpc, gp->o7, gp->i7, gp->rpc);
+		}
+	}
+
+	memset(global_reg_snapshot, 0, sizeof(global_reg_snapshot));
+
+	spin_unlock_irqrestore(&global_reg_snapshot_lock, flags);
+}
+
+#ifdef CONFIG_MAGIC_SYSRQ
+
+static void sysrq_handle_globreg(int key, struct tty_struct *tty)
+{
+	__trigger_all_cpu_backtrace();
+}
+
+static struct sysrq_key_op sparc_globalreg_op = {
+	.handler	= sysrq_handle_globreg,
+	.help_msg	= "Globalregs",
+	.action_msg	= "Show Global CPU Regs",
+};
+
+static int __init sparc_globreg_init(void)
+{
+	return register_sysrq_key('y', &sparc_globalreg_op);
+}
+
+core_initcall(sparc_globreg_init);
+
+#endif
+
+unsigned long thread_saved_pc(struct task_struct *tsk)
+{
+	struct thread_info *ti = task_thread_info(tsk);
+	unsigned long ret = 0xdeadbeefUL;
+	
+	if (ti && ti->ksp) {
+		unsigned long *sp;
+		sp = (unsigned long *)(ti->ksp + STACK_BIAS);
+		if (((unsigned long)sp & (sizeof(long) - 1)) == 0UL &&
+		    sp[14]) {
+			unsigned long *fp;
+			fp = (unsigned long *)(sp[14] + STACK_BIAS);
+			if (((unsigned long)fp & (sizeof(long) - 1)) == 0UL)
+				ret = fp[15];
+		}
+	}
+	return ret;
+}
+
+/* Free current thread data structures etc.. */
+void exit_thread(void)
+{
+	struct thread_info *t = current_thread_info();
+
+	if (t->utraps) {
+		if (t->utraps[0] < 2)
+			kfree (t->utraps);
+		else
+			t->utraps[0]--;
+	}
+
+	if (test_and_clear_thread_flag(TIF_PERFCTR)) {
+		t->user_cntd0 = t->user_cntd1 = NULL;
+		t->pcr_reg = 0;
+		write_pcr(0);
+	}
+}
+
+void flush_thread(void)
+{
+	struct thread_info *t = current_thread_info();
+	struct mm_struct *mm;
+
+	if (test_ti_thread_flag(t, TIF_ABI_PENDING)) {
+		clear_ti_thread_flag(t, TIF_ABI_PENDING);
+		if (test_ti_thread_flag(t, TIF_32BIT))
+			clear_ti_thread_flag(t, TIF_32BIT);
+		else
+			set_ti_thread_flag(t, TIF_32BIT);
+	}
+
+	mm = t->task->mm;
+	if (mm)
+		tsb_context_switch(mm);
+
+	set_thread_wsaved(0);
+
+	/* Turn off performance counters if on. */
+	if (test_and_clear_thread_flag(TIF_PERFCTR)) {
+		t->user_cntd0 = t->user_cntd1 = NULL;
+		t->pcr_reg = 0;
+		write_pcr(0);
+	}
+
+	/* Clear FPU register state. */
+	t->fpsaved[0] = 0;
+	
+	if (get_thread_current_ds() != ASI_AIUS)
+		set_fs(USER_DS);
+}
+
+/* It's a bit more tricky when 64-bit tasks are involved... */
+static unsigned long clone_stackframe(unsigned long csp, unsigned long psp)
+{
+	unsigned long fp, distance, rval;
+
+	if (!(test_thread_flag(TIF_32BIT))) {
+		csp += STACK_BIAS;
+		psp += STACK_BIAS;
+		__get_user(fp, &(((struct reg_window __user *)psp)->ins[6]));
+		fp += STACK_BIAS;
+	} else
+		__get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6]));
+
+	/* Now 8-byte align the stack as this is mandatory in the
+	 * Sparc ABI due to how register windows work.  This hides
+	 * the restriction from thread libraries etc.  -DaveM
+	 */
+	csp &= ~7UL;
+
+	distance = fp - psp;
+	rval = (csp - distance);
+	if (copy_in_user((void __user *) rval, (void __user *) psp, distance))
+		rval = 0;
+	else if (test_thread_flag(TIF_32BIT)) {
+		if (put_user(((u32)csp),
+			     &(((struct reg_window32 __user *)rval)->ins[6])))
+			rval = 0;
+	} else {
+		if (put_user(((u64)csp - STACK_BIAS),
+			     &(((struct reg_window __user *)rval)->ins[6])))
+			rval = 0;
+		else
+			rval = rval - STACK_BIAS;
+	}
+
+	return rval;
+}
+
+/* Standard stuff. */
+static inline void shift_window_buffer(int first_win, int last_win,
+				       struct thread_info *t)
+{
+	int i;
+
+	for (i = first_win; i < last_win; i++) {
+		t->rwbuf_stkptrs[i] = t->rwbuf_stkptrs[i+1];
+		memcpy(&t->reg_window[i], &t->reg_window[i+1],
+		       sizeof(struct reg_window));
+	}
+}
+
+void synchronize_user_stack(void)
+{
+	struct thread_info *t = current_thread_info();
+	unsigned long window;
+
+	flush_user_windows();
+	if ((window = get_thread_wsaved()) != 0) {
+		int winsize = sizeof(struct reg_window);
+		int bias = 0;
+
+		if (test_thread_flag(TIF_32BIT))
+			winsize = sizeof(struct reg_window32);
+		else
+			bias = STACK_BIAS;
+
+		window -= 1;
+		do {
+			unsigned long sp = (t->rwbuf_stkptrs[window] + bias);
+			struct reg_window *rwin = &t->reg_window[window];
+
+			if (!copy_to_user((char __user *)sp, rwin, winsize)) {
+				shift_window_buffer(window, get_thread_wsaved() - 1, t);
+				set_thread_wsaved(get_thread_wsaved() - 1);
+			}
+		} while (window--);
+	}
+}
+
+static void stack_unaligned(unsigned long sp)
+{
+	siginfo_t info;
+
+	info.si_signo = SIGBUS;
+	info.si_errno = 0;
+	info.si_code = BUS_ADRALN;
+	info.si_addr = (void __user *) sp;
+	info.si_trapno = 0;
+	force_sig_info(SIGBUS, &info, current);
+}
+
+void fault_in_user_windows(void)
+{
+	struct thread_info *t = current_thread_info();
+	unsigned long window;
+	int winsize = sizeof(struct reg_window);
+	int bias = 0;
+
+	if (test_thread_flag(TIF_32BIT))
+		winsize = sizeof(struct reg_window32);
+	else
+		bias = STACK_BIAS;
+
+	flush_user_windows();
+	window = get_thread_wsaved();
+
+	if (likely(window != 0)) {
+		window -= 1;
+		do {
+			unsigned long sp = (t->rwbuf_stkptrs[window] + bias);
+			struct reg_window *rwin = &t->reg_window[window];
+
+			if (unlikely(sp & 0x7UL))
+				stack_unaligned(sp);
+
+			if (unlikely(copy_to_user((char __user *)sp,
+						  rwin, winsize)))
+				goto barf;
+		} while (window--);
+	}
+	set_thread_wsaved(0);
+	return;
+
+barf:
+	set_thread_wsaved(window + 1);
+	do_exit(SIGILL);
+}
+
+asmlinkage long sparc_do_fork(unsigned long clone_flags,
+			      unsigned long stack_start,
+			      struct pt_regs *regs,
+			      unsigned long stack_size)
+{
+	int __user *parent_tid_ptr, *child_tid_ptr;
+	unsigned long orig_i1 = regs->u_regs[UREG_I1];
+	long ret;
+
+#ifdef CONFIG_COMPAT
+	if (test_thread_flag(TIF_32BIT)) {
+		parent_tid_ptr = compat_ptr(regs->u_regs[UREG_I2]);
+		child_tid_ptr = compat_ptr(regs->u_regs[UREG_I4]);
+	} else
+#endif
+	{
+		parent_tid_ptr = (int __user *) regs->u_regs[UREG_I2];
+		child_tid_ptr = (int __user *) regs->u_regs[UREG_I4];
+	}
+
+	ret = do_fork(clone_flags, stack_start,
+		      regs, stack_size,
+		      parent_tid_ptr, child_tid_ptr);
+
+	/* If we get an error and potentially restart the system
+	 * call, we're screwed because copy_thread() clobbered
+	 * the parent's %o1.  So detect that case and restore it
+	 * here.
+	 */
+	if ((unsigned long)ret >= -ERESTART_RESTARTBLOCK)
+		regs->u_regs[UREG_I1] = orig_i1;
+
+	return ret;
+}
+
+/* Copy a Sparc thread.  The fork() return value conventions
+ * under SunOS are nothing short of bletcherous:
+ * Parent -->  %o0 == childs  pid, %o1 == 0
+ * Child  -->  %o0 == parents pid, %o1 == 1
+ */
+int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
+		unsigned long unused,
+		struct task_struct *p, struct pt_regs *regs)
+{
+	struct thread_info *t = task_thread_info(p);
+	struct sparc_stackf *parent_sf;
+	unsigned long child_stack_sz;
+	char *child_trap_frame;
+	int kernel_thread;
+
+	kernel_thread = (regs->tstate & TSTATE_PRIV) ? 1 : 0;
+	parent_sf = ((struct sparc_stackf *) regs) - 1;
+
+	/* Calculate offset to stack_frame & pt_regs */
+	child_stack_sz = ((STACKFRAME_SZ + TRACEREG_SZ) +
+			  (kernel_thread ? STACKFRAME_SZ : 0));
+	child_trap_frame = (task_stack_page(p) +
+			    (THREAD_SIZE - child_stack_sz));
+	memcpy(child_trap_frame, parent_sf, child_stack_sz);
+
+	t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) |
+				 (0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) |
+		(((regs->tstate + 1) & TSTATE_CWP) << TI_FLAG_CWP_SHIFT);
+	t->new_child = 1;
+	t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS;
+	t->kregs = (struct pt_regs *) (child_trap_frame +
+				       sizeof(struct sparc_stackf));
+	t->fpsaved[0] = 0;
+
+	if (kernel_thread) {
+		struct sparc_stackf *child_sf = (struct sparc_stackf *)
+			(child_trap_frame + (STACKFRAME_SZ + TRACEREG_SZ));
+
+		/* Zero terminate the stack backtrace.  */
+		child_sf->fp = NULL;
+		t->kregs->u_regs[UREG_FP] =
+		  ((unsigned long) child_sf) - STACK_BIAS;
+
+		/* Special case, if we are spawning a kernel thread from
+		 * a userspace task (usermode helper, NFS or similar), we
+		 * must disable performance counters in the child because
+		 * the address space and protection realm are changing.
+		 */
+		if (t->flags & _TIF_PERFCTR) {
+			t->user_cntd0 = t->user_cntd1 = NULL;
+			t->pcr_reg = 0;
+			t->flags &= ~_TIF_PERFCTR;
+		}
+		t->flags |= ((long)ASI_P << TI_FLAG_CURRENT_DS_SHIFT);
+		t->kregs->u_regs[UREG_G6] = (unsigned long) t;
+		t->kregs->u_regs[UREG_G4] = (unsigned long) t->task;
+	} else {
+		if (t->flags & _TIF_32BIT) {
+			sp &= 0x00000000ffffffffUL;
+			regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
+		}
+		t->kregs->u_regs[UREG_FP] = sp;
+		t->flags |= ((long)ASI_AIUS << TI_FLAG_CURRENT_DS_SHIFT);
+		if (sp != regs->u_regs[UREG_FP]) {
+			unsigned long csp;
+
+			csp = clone_stackframe(sp, regs->u_regs[UREG_FP]);
+			if (!csp)
+				return -EFAULT;
+			t->kregs->u_regs[UREG_FP] = csp;
+		}
+		if (t->utraps)
+			t->utraps[0]++;
+	}
+
+	/* Set the return value for the child. */
+	t->kregs->u_regs[UREG_I0] = current->pid;
+	t->kregs->u_regs[UREG_I1] = 1;
+
+	/* Set the second return value for the parent. */
+	regs->u_regs[UREG_I1] = 0;
+
+	if (clone_flags & CLONE_SETTLS)
+		t->kregs->u_regs[UREG_G7] = regs->u_regs[UREG_I3];
+
+	return 0;
+}
+
+/*
+ * This is the mechanism for creating a new kernel thread.
+ *
+ * NOTE! Only a kernel-only process(ie the swapper or direct descendants
+ * who haven't done an "execve()") should use this: it will work within
+ * a system call from a "real" process, but the process memory space will
+ * not be freed until both the parent and the child have exited.
+ */
+pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
+{
+	long retval;
+
+	/* If the parent runs before fn(arg) is called by the child,
+	 * the input registers of this function can be clobbered.
+	 * So we stash 'fn' and 'arg' into global registers which
+	 * will not be modified by the parent.
+	 */
+	__asm__ __volatile__("mov %4, %%g2\n\t"	   /* Save FN into global */
+			     "mov %5, %%g3\n\t"	   /* Save ARG into global */
+			     "mov %1, %%g1\n\t"	   /* Clone syscall nr. */
+			     "mov %2, %%o0\n\t"	   /* Clone flags. */
+			     "mov 0, %%o1\n\t"	   /* usp arg == 0 */
+			     "t 0x6d\n\t"	   /* Linux/Sparc clone(). */
+			     "brz,a,pn %%o1, 1f\n\t" /* Parent, just return. */
+			     " mov %%o0, %0\n\t"
+			     "jmpl %%g2, %%o7\n\t"   /* Call the function. */
+			     " mov %%g3, %%o0\n\t"   /* Set arg in delay. */
+			     "mov %3, %%g1\n\t"
+			     "t 0x6d\n\t"	   /* Linux/Sparc exit(). */
+			     /* Notreached by child. */
+			     "1:" :
+			     "=r" (retval) :
+			     "i" (__NR_clone), "r" (flags | CLONE_VM | CLONE_UNTRACED),
+			     "i" (__NR_exit),  "r" (fn), "r" (arg) :
+			     "g1", "g2", "g3", "o0", "o1", "memory", "cc");
+	return retval;
+}
+
+typedef struct {
+	union {
+		unsigned int	pr_regs[32];
+		unsigned long	pr_dregs[16];
+	} pr_fr;
+	unsigned int __unused;
+	unsigned int	pr_fsr;
+	unsigned char	pr_qcnt;
+	unsigned char	pr_q_entrysize;
+	unsigned char	pr_en;
+	unsigned int	pr_q[64];
+} elf_fpregset_t32;
+
+/*
+ * fill in the fpu structure for a core dump.
+ */
+int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs)
+{
+	unsigned long *kfpregs = current_thread_info()->fpregs;
+	unsigned long fprs = current_thread_info()->fpsaved[0];
+
+	if (test_thread_flag(TIF_32BIT)) {
+		elf_fpregset_t32 *fpregs32 = (elf_fpregset_t32 *)fpregs;
+
+		if (fprs & FPRS_DL)
+			memcpy(&fpregs32->pr_fr.pr_regs[0], kfpregs,
+			       sizeof(unsigned int) * 32);
+		else
+			memset(&fpregs32->pr_fr.pr_regs[0], 0,
+			       sizeof(unsigned int) * 32);
+		fpregs32->pr_qcnt = 0;
+		fpregs32->pr_q_entrysize = 8;
+		memset(&fpregs32->pr_q[0], 0,
+		       (sizeof(unsigned int) * 64));
+		if (fprs & FPRS_FEF) {
+			fpregs32->pr_fsr = (unsigned int) current_thread_info()->xfsr[0];
+			fpregs32->pr_en = 1;
+		} else {
+			fpregs32->pr_fsr = 0;
+			fpregs32->pr_en = 0;
+		}
+	} else {
+		if(fprs & FPRS_DL)
+			memcpy(&fpregs->pr_regs[0], kfpregs,
+			       sizeof(unsigned int) * 32);
+		else
+			memset(&fpregs->pr_regs[0], 0,
+			       sizeof(unsigned int) * 32);
+		if(fprs & FPRS_DU)
+			memcpy(&fpregs->pr_regs[16], kfpregs+16,
+			       sizeof(unsigned int) * 32);
+		else
+			memset(&fpregs->pr_regs[16], 0,
+			       sizeof(unsigned int) * 32);
+		if(fprs & FPRS_FEF) {
+			fpregs->pr_fsr = current_thread_info()->xfsr[0];
+			fpregs->pr_gsr = current_thread_info()->gsr[0];
+		} else {
+			fpregs->pr_fsr = fpregs->pr_gsr = 0;
+		}
+		fpregs->pr_fprs = fprs;
+	}
+	return 1;
+}
+
+/*
+ * sparc_execve() executes a new program after the asm stub has set
+ * things up for us.  This should basically do what I want it to.
+ */
+asmlinkage int sparc_execve(struct pt_regs *regs)
+{
+	int error, base = 0;
+	char *filename;
+
+	/* User register window flush is done by entry.S */
+
+	/* Check for indirect call. */
+	if (regs->u_regs[UREG_G1] == 0)
+		base = 1;
+
+	filename = getname((char __user *)regs->u_regs[base + UREG_I0]);
+	error = PTR_ERR(filename);
+	if (IS_ERR(filename))
+		goto out;
+	error = do_execve(filename,
+			  (char __user * __user *)
+			  regs->u_regs[base + UREG_I1],
+			  (char __user * __user *)
+			  regs->u_regs[base + UREG_I2], regs);
+	putname(filename);
+	if (!error) {
+		fprs_write(0);
+		current_thread_info()->xfsr[0] = 0;
+		current_thread_info()->fpsaved[0] = 0;
+		regs->tstate &= ~TSTATE_PEF;
+	}
+out:
+	return error;
+}
+
+unsigned long get_wchan(struct task_struct *task)
+{
+	unsigned long pc, fp, bias = 0;
+	struct thread_info *tp;
+	struct reg_window *rw;
+        unsigned long ret = 0;
+	int count = 0; 
+
+	if (!task || task == current ||
+            task->state == TASK_RUNNING)
+		goto out;
+
+	tp = task_thread_info(task);
+	bias = STACK_BIAS;
+	fp = task_thread_info(task)->ksp + bias;
+
+	do {
+		if (!kstack_valid(tp, fp))
+			break;
+		rw = (struct reg_window *) fp;
+		pc = rw->ins[7];
+		if (!in_sched_functions(pc)) {
+			ret = pc;
+			goto out;
+		}
+		fp = rw->ins[6] + bias;
+	} while (++count < 16);
+
+out:
+	return ret;
+}
diff --git a/arch/sparc/kernel/prom.h b/arch/sparc/kernel/prom.h
new file mode 100644
index 000000000000..bb0f0fda6cab
--- /dev/null
+++ b/arch/sparc/kernel/prom.h
@@ -0,0 +1,29 @@
+#ifndef __PROM_H
+#define __PROM_H
+
+#include <linux/spinlock.h>
+#include <asm/prom.h>
+
+extern struct device_node *allnodes;	/* temporary while merging */
+extern rwlock_t devtree_lock;	/* temporary while merging */
+
+extern void * prom_early_alloc(unsigned long size);
+extern void irq_trans_init(struct device_node *dp);
+
+extern unsigned int prom_unique_id;
+
+static inline int is_root_node(const struct device_node *dp)
+{
+	if (!dp)
+		return 0;
+
+	return (dp->parent == NULL);
+}
+
+extern char *build_path_component(struct device_node *dp);
+extern void of_console_init(void);
+extern void of_fill_in_cpu_data(void);
+
+extern unsigned int prom_early_allocated;
+
+#endif /* __PROM_H */
diff --git a/arch/sparc/kernel/prom.c b/arch/sparc/kernel/prom_32.c
index eee5efcfe50e..fe43e80772db 100644
--- a/arch/sparc/kernel/prom.c
+++ b/arch/sparc/kernel/prom_32.c
@@ -25,107 +25,9 @@
 #include <asm/prom.h>
 #include <asm/oplib.h>
 
-extern struct device_node *allnodes;	/* temporary while merging */
+#include "prom.h"
 
-extern rwlock_t devtree_lock;	/* temporary while merging */
-
-struct device_node *of_find_node_by_phandle(phandle handle)
-{
-	struct device_node *np;
-
-	for (np = allnodes; np != 0; np = np->allnext)
-		if (np->node == handle)
-			break;
-
-	return np;
-}
-EXPORT_SYMBOL(of_find_node_by_phandle);
-
-int of_getintprop_default(struct device_node *np, const char *name, int def)
-{
-	struct property *prop;
-	int len;
-
-	prop = of_find_property(np, name, &len);
-	if (!prop || len != 4)
-		return def;
-
-	return *(int *) prop->value;
-}
-EXPORT_SYMBOL(of_getintprop_default);
-
-DEFINE_MUTEX(of_set_property_mutex);
-EXPORT_SYMBOL(of_set_property_mutex);
-
-int of_set_property(struct device_node *dp, const char *name, void *val, int len)
-{
-	struct property **prevp;
-	void *new_val;
-	int err;
-
-	new_val = kmalloc(len, GFP_KERNEL);
-	if (!new_val)
-		return -ENOMEM;
-
-	memcpy(new_val, val, len);
-
-	err = -ENODEV;
-
-	write_lock(&devtree_lock);
-	prevp = &dp->properties;
-	while (*prevp) {
-		struct property *prop = *prevp;
-
-		if (!strcasecmp(prop->name, name)) {
-			void *old_val = prop->value;
-			int ret;
-
-			mutex_lock(&of_set_property_mutex);
-			ret = prom_setprop(dp->node, (char *) name, val, len);
-			mutex_unlock(&of_set_property_mutex);
-
-			err = -EINVAL;
-			if (ret >= 0) {
-				prop->value = new_val;
-				prop->length = len;
-
-				if (OF_IS_DYNAMIC(prop))
-					kfree(old_val);
-
-				OF_MARK_DYNAMIC(prop);
-
-				err = 0;
-			}
-			break;
-		}
-		prevp = &(*prevp)->next;
-	}
-	write_unlock(&devtree_lock);
-
-	/* XXX Upate procfs if necessary... */
-
-	return err;
-}
-EXPORT_SYMBOL(of_set_property);
-
-int of_find_in_proplist(const char *list, const char *match, int len)
-{
-	while (len > 0) {
-		int l;
-
-		if (!strcmp(list, match))
-			return 1;
-		l = strlen(list) + 1;
-		list += l;
-		len -= l;
-	}
-	return 0;
-}
-EXPORT_SYMBOL(of_find_in_proplist);
-
-static unsigned int prom_early_allocated;
-
-static void * __init prom_early_alloc(unsigned long size)
+void * __init prom_early_alloc(unsigned long size)
 {
 	void *ret;
 
@@ -138,14 +40,6 @@ static void * __init prom_early_alloc(unsigned long size)
 	return ret;
 }
 
-static int is_root_node(const struct device_node *dp)
-{
-	if (!dp)
-		return 0;
-
-	return (dp->parent == NULL);
-}
-
 /* The following routines deal with the black magic of fully naming a
  * node.
  *
@@ -257,7 +151,7 @@ static void __init __build_path_component(struct device_node *dp, char *tmp_buf)
 	return sparc32_path_component(dp, tmp_buf);
 }
 
-static char * __init build_path_component(struct device_node *dp)
+char * __init build_path_component(struct device_node *dp)
 {
 	char tmp_buf[64], *n;
 
@@ -272,164 +166,9 @@ static char * __init build_path_component(struct device_node *dp)
 	return n;
 }
 
-static char * __init build_full_name(struct device_node *dp)
-{
-	int len, ourlen, plen;
-	char *n;
-
-	plen = strlen(dp->parent->full_name);
-	ourlen = strlen(dp->path_component_name);
-	len = ourlen + plen + 2;
-
-	n = prom_early_alloc(len);
-	strcpy(n, dp->parent->full_name);
-	if (!is_root_node(dp->parent)) {
-		strcpy(n + plen, "/");
-		plen++;
-	}
-	strcpy(n + plen, dp->path_component_name);
-
-	return n;
-}
-
-static unsigned int unique_id;
-
-static struct property * __init build_one_prop(phandle node, char *prev, char *special_name, void *special_val, int special_len)
-{
-	static struct property *tmp = NULL;
-	struct property *p;
-	int len;
-	const char *name;
-
-	if (tmp) {
-		p = tmp;
-		memset(p, 0, sizeof(*p) + 32);
-		tmp = NULL;
-	} else {
-		p = prom_early_alloc(sizeof(struct property) + 32);
-		p->unique_id = unique_id++;
-	}
-
-	p->name = (char *) (p + 1);
-	if (special_name) {
-		strcpy(p->name, special_name);
-		p->length = special_len;
-		p->value = prom_early_alloc(special_len);
-		memcpy(p->value, special_val, special_len);
-	} else {
-		if (prev == NULL) {
-			name = prom_firstprop(node, NULL);
-		} else {
-			name = prom_nextprop(node, prev, NULL);
-		}
-		if (strlen(name) == 0) {
-			tmp = p;
-			return NULL;
-		}
-		strcpy(p->name, name);
-		p->length = prom_getproplen(node, p->name);
-		if (p->length <= 0) {
-			p->length = 0;
-		} else {
-			p->value = prom_early_alloc(p->length + 1);
-			len = prom_getproperty(node, p->name, p->value,
-					       p->length);
-			if (len <= 0)
-				p->length = 0;
-			((unsigned char *)p->value)[p->length] = '\0';
-		}
-	}
-	return p;
-}
-
-static struct property * __init build_prop_list(phandle node)
-{
-	struct property *head, *tail;
-
-	head = tail = build_one_prop(node, NULL,
-				     ".node", &node, sizeof(node));
-
-	tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
-	tail = tail->next;
-	while(tail) {
-		tail->next = build_one_prop(node, tail->name,
-					    NULL, NULL, 0);
-		tail = tail->next;
-	}
-
-	return head;
-}
-
-static char * __init get_one_property(phandle node, char *name)
-{
-	char *buf = "<NULL>";
-	int len;
-
-	len = prom_getproplen(node, name);
-	if (len > 0) {
-		buf = prom_early_alloc(len);
-		len = prom_getproperty(node, name, buf, len);
-	}
-
-	return buf;
-}
-
-static struct device_node * __init create_node(phandle node)
-{
-	struct device_node *dp;
-
-	if (!node)
-		return NULL;
-
-	dp = prom_early_alloc(sizeof(*dp));
-	dp->unique_id = unique_id++;
-
-	kref_init(&dp->kref);
-
-	dp->name = get_one_property(node, "name");
-	dp->type = get_one_property(node, "device_type");
-	dp->node = node;
-
-	/* Build interrupts later... */
-
-	dp->properties = build_prop_list(node);
-
-	return dp;
-}
-
-static struct device_node * __init build_tree(struct device_node *parent, phandle node, struct device_node ***nextp)
-{
-	struct device_node *dp;
-
-	dp = create_node(node);
-	if (dp) {
-		*(*nextp) = dp;
-		*nextp = &dp->allnext;
-
-		dp->parent = parent;
-		dp->path_component_name = build_path_component(dp);
-		dp->full_name = build_full_name(dp);
-
-		dp->child = build_tree(dp, prom_getchild(node), nextp);
-
-		dp->sibling = build_tree(parent, prom_getsibling(node), nextp);
-	}
-
-	return dp;
-}
-
-struct device_node *of_console_device;
-EXPORT_SYMBOL(of_console_device);
-
-char *of_console_path;
-EXPORT_SYMBOL(of_console_path);
-
-char *of_console_options;
-EXPORT_SYMBOL(of_console_options);
-
 extern void restore_current(void);
 
-static void __init of_console_init(void)
+void __init of_console_init(void)
 {
 	char *msg = "OF stdout device is: %s\n";
 	struct device_node *dp;
@@ -547,20 +286,10 @@ static void __init of_console_init(void)
 	printk(msg, of_console_path);
 }
 
-void __init prom_build_devicetree(void)
+void __init of_fill_in_cpu_data(void)
 {
-	struct device_node **nextp;
-
-	allnodes = create_node(prom_root_node);
-	allnodes->path_component_name = "";
-	allnodes->full_name = "/";
-
-	nextp = &allnodes->allnext;
-	allnodes->child = build_tree(allnodes,
-				     prom_getchild(allnodes->node),
-				     &nextp);
-	of_console_init();
+}
 
-	printk("PROM: Built device tree with %u bytes of memory.\n",
-	       prom_early_allocated);
+void __init irq_trans_init(struct device_node *dp)
+{
 }
diff --git a/arch/sparc/kernel/prom_64.c b/arch/sparc/kernel/prom_64.c
new file mode 100644
index 000000000000..edecca7b8116
--- /dev/null
+++ b/arch/sparc/kernel/prom_64.c
@@ -0,0 +1,571 @@
+/*
+ * Procedures for creating, accessing and interpreting the device tree.
+ *
+ * Paul Mackerras	August 1996.
+ * Copyright (C) 1996-2005 Paul Mackerras.
+ * 
+ *  Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
+ *    {engebret|bergner}@us.ibm.com 
+ *
+ *  Adapted for sparc64 by David S. Miller davem@davemloft.net
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/lmb.h>
+#include <linux/of_device.h>
+
+#include <asm/prom.h>
+#include <asm/oplib.h>
+#include <asm/irq.h>
+#include <asm/asi.h>
+#include <asm/upa.h>
+#include <asm/smp.h>
+
+#include "prom.h"
+
+void * __init prom_early_alloc(unsigned long size)
+{
+	unsigned long paddr = lmb_alloc(size, SMP_CACHE_BYTES);
+	void *ret;
+
+	if (!paddr) {
+		prom_printf("prom_early_alloc(%lu) failed\n");
+		prom_halt();
+	}
+
+	ret = __va(paddr);
+	memset(ret, 0, size);
+	prom_early_allocated += size;
+
+	return ret;
+}
+
+/* The following routines deal with the black magic of fully naming a
+ * node.
+ *
+ * Certain well known named nodes are just the simple name string.
+ *
+ * Actual devices have an address specifier appended to the base name
+ * string, like this "foo@addr".  The "addr" can be in any number of
+ * formats, and the platform plus the type of the node determine the
+ * format and how it is constructed.
+ *
+ * For children of the ROOT node, the naming convention is fixed and
+ * determined by whether this is a sun4u or sun4v system.
+ *
+ * For children of other nodes, it is bus type specific.  So
+ * we walk up the tree until we discover a "device_type" property
+ * we recognize and we go from there.
+ *
+ * As an example, the boot device on my workstation has a full path:
+ *
+ *	/pci@1e,600000/ide@d/disk@0,0:c
+ */
+static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct linux_prom64_registers *regs;
+	struct property *rprop;
+	u32 high_bits, low_bits, type;
+
+	rprop = of_find_property(dp, "reg", NULL);
+	if (!rprop)
+		return;
+
+	regs = rprop->value;
+	if (!is_root_node(dp->parent)) {
+		sprintf(tmp_buf, "%s@%x,%x",
+			dp->name,
+			(unsigned int) (regs->phys_addr >> 32UL),
+			(unsigned int) (regs->phys_addr & 0xffffffffUL));
+		return;
+	}
+
+	type = regs->phys_addr >> 60UL;
+	high_bits = (regs->phys_addr >> 32UL) & 0x0fffffffUL;
+	low_bits = (regs->phys_addr & 0xffffffffUL);
+
+	if (type == 0 || type == 8) {
+		const char *prefix = (type == 0) ? "m" : "i";
+
+		if (low_bits)
+			sprintf(tmp_buf, "%s@%s%x,%x",
+				dp->name, prefix,
+				high_bits, low_bits);
+		else
+			sprintf(tmp_buf, "%s@%s%x",
+				dp->name,
+				prefix,
+				high_bits);
+	} else if (type == 12) {
+		sprintf(tmp_buf, "%s@%x",
+			dp->name, high_bits);
+	}
+}
+
+static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct linux_prom64_registers *regs;
+	struct property *prop;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+	if (!is_root_node(dp->parent)) {
+		sprintf(tmp_buf, "%s@%x,%x",
+			dp->name,
+			(unsigned int) (regs->phys_addr >> 32UL),
+			(unsigned int) (regs->phys_addr & 0xffffffffUL));
+		return;
+	}
+
+	prop = of_find_property(dp, "upa-portid", NULL);
+	if (!prop)
+		prop = of_find_property(dp, "portid", NULL);
+	if (prop) {
+		unsigned long mask = 0xffffffffUL;
+
+		if (tlb_type >= cheetah)
+			mask = 0x7fffff;
+
+		sprintf(tmp_buf, "%s@%x,%x",
+			dp->name,
+			*(u32 *)prop->value,
+			(unsigned int) (regs->phys_addr & mask));
+	}
+}
+
+/* "name@slot,offset"  */
+static void __init sbus_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct linux_prom_registers *regs;
+	struct property *prop;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+	sprintf(tmp_buf, "%s@%x,%x",
+		dp->name,
+		regs->which_io,
+		regs->phys_addr);
+}
+
+/* "name@devnum[,func]" */
+static void __init pci_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct linux_prom_pci_registers *regs;
+	struct property *prop;
+	unsigned int devfn;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+	devfn = (regs->phys_hi >> 8) & 0xff;
+	if (devfn & 0x07) {
+		sprintf(tmp_buf, "%s@%x,%x",
+			dp->name,
+			devfn >> 3,
+			devfn & 0x07);
+	} else {
+		sprintf(tmp_buf, "%s@%x",
+			dp->name,
+			devfn >> 3);
+	}
+}
+
+/* "name@UPA_PORTID,offset" */
+static void __init upa_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct linux_prom64_registers *regs;
+	struct property *prop;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+
+	prop = of_find_property(dp, "upa-portid", NULL);
+	if (!prop)
+		return;
+
+	sprintf(tmp_buf, "%s@%x,%x",
+		dp->name,
+		*(u32 *) prop->value,
+		(unsigned int) (regs->phys_addr & 0xffffffffUL));
+}
+
+/* "name@reg" */
+static void __init vdev_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct property *prop;
+	u32 *regs;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+
+	sprintf(tmp_buf, "%s@%x", dp->name, *regs);
+}
+
+/* "name@addrhi,addrlo" */
+static void __init ebus_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct linux_prom64_registers *regs;
+	struct property *prop;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+
+	sprintf(tmp_buf, "%s@%x,%x",
+		dp->name,
+		(unsigned int) (regs->phys_addr >> 32UL),
+		(unsigned int) (regs->phys_addr & 0xffffffffUL));
+}
+
+/* "name@bus,addr" */
+static void __init i2c_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct property *prop;
+	u32 *regs;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+
+	/* This actually isn't right... should look at the #address-cells
+	 * property of the i2c bus node etc. etc.
+	 */
+	sprintf(tmp_buf, "%s@%x,%x",
+		dp->name, regs[0], regs[1]);
+}
+
+/* "name@reg0[,reg1]" */
+static void __init usb_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct property *prop;
+	u32 *regs;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+
+	if (prop->length == sizeof(u32) || regs[1] == 1) {
+		sprintf(tmp_buf, "%s@%x",
+			dp->name, regs[0]);
+	} else {
+		sprintf(tmp_buf, "%s@%x,%x",
+			dp->name, regs[0], regs[1]);
+	}
+}
+
+/* "name@reg0reg1[,reg2reg3]" */
+static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct property *prop;
+	u32 *regs;
+
+	prop = of_find_property(dp, "reg", NULL);
+	if (!prop)
+		return;
+
+	regs = prop->value;
+
+	if (regs[2] || regs[3]) {
+		sprintf(tmp_buf, "%s@%08x%08x,%04x%08x",
+			dp->name, regs[0], regs[1], regs[2], regs[3]);
+	} else {
+		sprintf(tmp_buf, "%s@%08x%08x",
+			dp->name, regs[0], regs[1]);
+	}
+}
+
+static void __init __build_path_component(struct device_node *dp, char *tmp_buf)
+{
+	struct device_node *parent = dp->parent;
+
+	if (parent != NULL) {
+		if (!strcmp(parent->type, "pci") ||
+		    !strcmp(parent->type, "pciex")) {
+			pci_path_component(dp, tmp_buf);
+			return;
+		}
+		if (!strcmp(parent->type, "sbus")) {
+			sbus_path_component(dp, tmp_buf);
+			return;
+		}
+		if (!strcmp(parent->type, "upa")) {
+			upa_path_component(dp, tmp_buf);
+			return;
+		}
+		if (!strcmp(parent->type, "ebus")) {
+			ebus_path_component(dp, tmp_buf);
+			return;
+		}
+		if (!strcmp(parent->name, "usb") ||
+		    !strcmp(parent->name, "hub")) {
+			usb_path_component(dp, tmp_buf);
+			return;
+		}
+		if (!strcmp(parent->type, "i2c")) {
+			i2c_path_component(dp, tmp_buf);
+			return;
+		}
+		if (!strcmp(parent->type, "firewire")) {
+			ieee1394_path_component(dp, tmp_buf);
+			return;
+		}
+		if (!strcmp(parent->type, "virtual-devices")) {
+			vdev_path_component(dp, tmp_buf);
+			return;
+		}
+		/* "isa" is handled with platform naming */
+	}
+
+	/* Use platform naming convention.  */
+	if (tlb_type == hypervisor) {
+		sun4v_path_component(dp, tmp_buf);
+		return;
+	} else {
+		sun4u_path_component(dp, tmp_buf);
+	}
+}
+
+char * __init build_path_component(struct device_node *dp)
+{
+	char tmp_buf[64], *n;
+
+	tmp_buf[0] = '\0';
+	__build_path_component(dp, tmp_buf);
+	if (tmp_buf[0] == '\0')
+		strcpy(tmp_buf, dp->name);
+
+	n = prom_early_alloc(strlen(tmp_buf) + 1);
+	strcpy(n, tmp_buf);
+
+	return n;
+}
+
+static const char *get_mid_prop(void)
+{
+	return (tlb_type == spitfire ? "upa-portid" : "portid");
+}
+
+struct device_node *of_find_node_by_cpuid(int cpuid)
+{
+	struct device_node *dp;
+	const char *mid_prop = get_mid_prop();
+
+	for_each_node_by_type(dp, "cpu") {
+		int id = of_getintprop_default(dp, mid_prop, -1);
+		const char *this_mid_prop = mid_prop;
+
+		if (id < 0) {
+			this_mid_prop = "cpuid";
+			id = of_getintprop_default(dp, this_mid_prop, -1);
+		}
+
+		if (id < 0) {
+			prom_printf("OF: Serious problem, cpu lacks "
+				    "%s property", this_mid_prop);
+			prom_halt();
+		}
+		if (cpuid == id)
+			return dp;
+	}
+	return NULL;
+}
+
+void __init of_fill_in_cpu_data(void)
+{
+	struct device_node *dp;
+	const char *mid_prop;
+
+	if (tlb_type == hypervisor)
+		return;
+
+	mid_prop = get_mid_prop();
+	ncpus_probed = 0;
+	for_each_node_by_type(dp, "cpu") {
+		int cpuid = of_getintprop_default(dp, mid_prop, -1);
+		const char *this_mid_prop = mid_prop;
+		struct device_node *portid_parent;
+		int portid = -1;
+
+		portid_parent = NULL;
+		if (cpuid < 0) {
+			this_mid_prop = "cpuid";
+			cpuid = of_getintprop_default(dp, this_mid_prop, -1);
+			if (cpuid >= 0) {
+				int limit = 2;
+
+				portid_parent = dp;
+				while (limit--) {
+					portid_parent = portid_parent->parent;
+					if (!portid_parent)
+						break;
+					portid = of_getintprop_default(portid_parent,
+								       "portid", -1);
+					if (portid >= 0)
+						break;
+				}
+			}
+		}
+
+		if (cpuid < 0) {
+			prom_printf("OF: Serious problem, cpu lacks "
+				    "%s property", this_mid_prop);
+			prom_halt();
+		}
+
+		ncpus_probed++;
+
+#ifdef CONFIG_SMP
+		if (cpuid >= NR_CPUS) {
+			printk(KERN_WARNING "Ignoring CPU %d which is "
+			       ">= NR_CPUS (%d)\n",
+			       cpuid, NR_CPUS);
+			continue;
+		}
+#else
+		/* On uniprocessor we only want the values for the
+		 * real physical cpu the kernel booted onto, however
+		 * cpu_data() only has one entry at index 0.
+		 */
+		if (cpuid != real_hard_smp_processor_id())
+			continue;
+		cpuid = 0;
+#endif
+
+		cpu_data(cpuid).clock_tick =
+			of_getintprop_default(dp, "clock-frequency", 0);
+
+		if (portid_parent) {
+			cpu_data(cpuid).dcache_size =
+				of_getintprop_default(dp, "l1-dcache-size",
+						      16 * 1024);
+			cpu_data(cpuid).dcache_line_size =
+				of_getintprop_default(dp, "l1-dcache-line-size",
+						      32);
+			cpu_data(cpuid).icache_size =
+				of_getintprop_default(dp, "l1-icache-size",
+						      8 * 1024);
+			cpu_data(cpuid).icache_line_size =
+				of_getintprop_default(dp, "l1-icache-line-size",
+						      32);
+			cpu_data(cpuid).ecache_size =
+				of_getintprop_default(dp, "l2-cache-size", 0);
+			cpu_data(cpuid).ecache_line_size =
+				of_getintprop_default(dp, "l2-cache-line-size", 0);
+			if (!cpu_data(cpuid).ecache_size ||
+			    !cpu_data(cpuid).ecache_line_size) {
+				cpu_data(cpuid).ecache_size =
+					of_getintprop_default(portid_parent,
+							      "l2-cache-size",
+							      (4 * 1024 * 1024));
+				cpu_data(cpuid).ecache_line_size =
+					of_getintprop_default(portid_parent,
+							      "l2-cache-line-size", 64);
+			}
+
+			cpu_data(cpuid).core_id = portid + 1;
+			cpu_data(cpuid).proc_id = portid;
+#ifdef CONFIG_SMP
+			sparc64_multi_core = 1;
+#endif
+		} else {
+			cpu_data(cpuid).dcache_size =
+				of_getintprop_default(dp, "dcache-size", 16 * 1024);
+			cpu_data(cpuid).dcache_line_size =
+				of_getintprop_default(dp, "dcache-line-size", 32);
+
+			cpu_data(cpuid).icache_size =
+				of_getintprop_default(dp, "icache-size", 16 * 1024);
+			cpu_data(cpuid).icache_line_size =
+				of_getintprop_default(dp, "icache-line-size", 32);
+
+			cpu_data(cpuid).ecache_size =
+				of_getintprop_default(dp, "ecache-size",
+						      (4 * 1024 * 1024));
+			cpu_data(cpuid).ecache_line_size =
+				of_getintprop_default(dp, "ecache-line-size", 64);
+
+			cpu_data(cpuid).core_id = 0;
+			cpu_data(cpuid).proc_id = -1;
+		}
+
+#ifdef CONFIG_SMP
+		cpu_set(cpuid, cpu_present_map);
+		cpu_set(cpuid, cpu_possible_map);
+#endif
+	}
+
+	smp_fill_in_sib_core_maps();
+}
+
+void __init of_console_init(void)
+{
+	char *msg = "OF stdout device is: %s\n";
+	struct device_node *dp;
+	const char *type;
+	phandle node;
+
+	of_console_path = prom_early_alloc(256);
+	if (prom_ihandle2path(prom_stdout, of_console_path, 256) < 0) {
+		prom_printf("Cannot obtain path of stdout.\n");
+		prom_halt();
+	}
+	of_console_options = strrchr(of_console_path, ':');
+	if (of_console_options) {
+		of_console_options++;
+		if (*of_console_options == '\0')
+			of_console_options = NULL;
+	}
+
+	node = prom_inst2pkg(prom_stdout);
+	if (!node) {
+		prom_printf("Cannot resolve stdout node from "
+			    "instance %08x.\n", prom_stdout);
+		prom_halt();
+	}
+
+	dp = of_find_node_by_phandle(node);
+	type = of_get_property(dp, "device_type", NULL);
+	if (!type) {
+		prom_printf("Console stdout lacks device_type property.\n");
+		prom_halt();
+	}
+
+	if (strcmp(type, "display") && strcmp(type, "serial")) {
+		prom_printf("Console device_type is neither display "
+			    "nor serial.\n");
+		prom_halt();
+	}
+
+	of_console_device = dp;
+
+	printk(msg, of_console_path);
+}
diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
new file mode 100644
index 000000000000..4e9af593db49
--- /dev/null
+++ b/arch/sparc/kernel/prom_common.c
@@ -0,0 +1,326 @@
+/* prom_common.c: OF device tree support common code.
+ *
+ * Paul Mackerras	August 1996.
+ * Copyright (C) 1996-2005 Paul Mackerras.
+ *
+ *  Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
+ *    {engebret|bergner}@us.ibm.com
+ *
+ *  Adapted for sparc by David S. Miller davem@davemloft.net
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <asm/prom.h>
+#include <asm/oplib.h>
+
+#include "prom.h"
+
+struct device_node *of_console_device;
+EXPORT_SYMBOL(of_console_device);
+
+char *of_console_path;
+EXPORT_SYMBOL(of_console_path);
+
+char *of_console_options;
+EXPORT_SYMBOL(of_console_options);
+
+struct device_node *of_find_node_by_phandle(phandle handle)
+{
+	struct device_node *np;
+
+	for (np = allnodes; np; np = np->allnext)
+		if (np->node == handle)
+			break;
+
+	return np;
+}
+EXPORT_SYMBOL(of_find_node_by_phandle);
+
+int of_getintprop_default(struct device_node *np, const char *name, int def)
+{
+	struct property *prop;
+	int len;
+
+	prop = of_find_property(np, name, &len);
+	if (!prop || len != 4)
+		return def;
+
+	return *(int *) prop->value;
+}
+EXPORT_SYMBOL(of_getintprop_default);
+
+DEFINE_MUTEX(of_set_property_mutex);
+EXPORT_SYMBOL(of_set_property_mutex);
+
+int of_set_property(struct device_node *dp, const char *name, void *val, int len)
+{
+	struct property **prevp;
+	void *new_val;
+	int err;
+
+	new_val = kmalloc(len, GFP_KERNEL);
+	if (!new_val)
+		return -ENOMEM;
+
+	memcpy(new_val, val, len);
+
+	err = -ENODEV;
+
+	write_lock(&devtree_lock);
+	prevp = &dp->properties;
+	while (*prevp) {
+		struct property *prop = *prevp;
+
+		if (!strcasecmp(prop->name, name)) {
+			void *old_val = prop->value;
+			int ret;
+
+			mutex_lock(&of_set_property_mutex);
+			ret = prom_setprop(dp->node, name, val, len);
+			mutex_unlock(&of_set_property_mutex);
+
+			err = -EINVAL;
+			if (ret >= 0) {
+				prop->value = new_val;
+				prop->length = len;
+
+				if (OF_IS_DYNAMIC(prop))
+					kfree(old_val);
+
+				OF_MARK_DYNAMIC(prop);
+
+				err = 0;
+			}
+			break;
+		}
+		prevp = &(*prevp)->next;
+	}
+	write_unlock(&devtree_lock);
+
+	/* XXX Upate procfs if necessary... */
+
+	return err;
+}
+EXPORT_SYMBOL(of_set_property);
+
+int of_find_in_proplist(const char *list, const char *match, int len)
+{
+	while (len > 0) {
+		int l;
+
+		if (!strcmp(list, match))
+			return 1;
+		l = strlen(list) + 1;
+		list += l;
+		len -= l;
+	}
+	return 0;
+}
+EXPORT_SYMBOL(of_find_in_proplist);
+
+unsigned int prom_unique_id;
+
+static struct property * __init build_one_prop(phandle node, char *prev,
+					       char *special_name,
+					       void *special_val,
+					       int special_len)
+{
+	static struct property *tmp = NULL;
+	struct property *p;
+	const char *name;
+
+	if (tmp) {
+		p = tmp;
+		memset(p, 0, sizeof(*p) + 32);
+		tmp = NULL;
+	} else {
+		p = prom_early_alloc(sizeof(struct property) + 32);
+		p->unique_id = prom_unique_id++;
+	}
+
+	p->name = (char *) (p + 1);
+	if (special_name) {
+		strcpy(p->name, special_name);
+		p->length = special_len;
+		p->value = prom_early_alloc(special_len);
+		memcpy(p->value, special_val, special_len);
+	} else {
+#ifdef CONFIG_SPARC32
+		if (prev == NULL) {
+			name = prom_firstprop(node, NULL);
+		} else {
+			name = prom_nextprop(node, prev, NULL);
+		}
+#else
+		if (prev == NULL) {
+			prom_firstprop(node, p->name);
+		} else {
+			prom_nextprop(node, prev, p->name);
+		}
+		name = p->name;
+#endif
+		if (strlen(name) == 0) {
+			tmp = p;
+			return NULL;
+		}
+#ifdef CONFIG_SPARC32
+		strcpy(p->name, name);
+#endif
+		p->length = prom_getproplen(node, p->name);
+		if (p->length <= 0) {
+			p->length = 0;
+		} else {
+			int len;
+
+			p->value = prom_early_alloc(p->length + 1);
+			len = prom_getproperty(node, p->name, p->value,
+					       p->length);
+			if (len <= 0)
+				p->length = 0;
+			((unsigned char *)p->value)[p->length] = '\0';
+		}
+	}
+	return p;
+}
+
+static struct property * __init build_prop_list(phandle node)
+{
+	struct property *head, *tail;
+
+	head = tail = build_one_prop(node, NULL,
+				     ".node", &node, sizeof(node));
+
+	tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
+	tail = tail->next;
+	while(tail) {
+		tail->next = build_one_prop(node, tail->name,
+					    NULL, NULL, 0);
+		tail = tail->next;
+	}
+
+	return head;
+}
+
+static char * __init get_one_property(phandle node, const char *name)
+{
+	char *buf = "<NULL>";
+	int len;
+
+	len = prom_getproplen(node, name);
+	if (len > 0) {
+		buf = prom_early_alloc(len);
+		len = prom_getproperty(node, name, buf, len);
+	}
+
+	return buf;
+}
+
+static struct device_node * __init prom_create_node(phandle node,
+						    struct device_node *parent)
+{
+	struct device_node *dp;
+
+	if (!node)
+		return NULL;
+
+	dp = prom_early_alloc(sizeof(*dp));
+	dp->unique_id = prom_unique_id++;
+	dp->parent = parent;
+
+	kref_init(&dp->kref);
+
+	dp->name = get_one_property(node, "name");
+	dp->type = get_one_property(node, "device_type");
+	dp->node = node;
+
+	dp->properties = build_prop_list(node);
+
+	irq_trans_init(dp);
+
+	return dp;
+}
+
+static char * __init build_full_name(struct device_node *dp)
+{
+	int len, ourlen, plen;
+	char *n;
+
+	plen = strlen(dp->parent->full_name);
+	ourlen = strlen(dp->path_component_name);
+	len = ourlen + plen + 2;
+
+	n = prom_early_alloc(len);
+	strcpy(n, dp->parent->full_name);
+	if (!is_root_node(dp->parent)) {
+		strcpy(n + plen, "/");
+		plen++;
+	}
+	strcpy(n + plen, dp->path_component_name);
+
+	return n;
+}
+
+static struct device_node * __init prom_build_tree(struct device_node *parent,
+						   phandle node,
+						   struct device_node ***nextp)
+{
+	struct device_node *ret = NULL, *prev_sibling = NULL;
+	struct device_node *dp;
+
+	while (1) {
+		dp = prom_create_node(node, parent);
+		if (!dp)
+			break;
+
+		if (prev_sibling)
+			prev_sibling->sibling = dp;
+
+		if (!ret)
+			ret = dp;
+		prev_sibling = dp;
+
+		*(*nextp) = dp;
+		*nextp = &dp->allnext;
+
+		dp->path_component_name = build_path_component(dp);
+		dp->full_name = build_full_name(dp);
+
+		dp->child = prom_build_tree(dp, prom_getchild(node), nextp);
+
+		node = prom_getsibling(node);
+	}
+
+	return ret;
+}
+
+unsigned int prom_early_allocated __initdata;
+
+void __init prom_build_devicetree(void)
+{
+	struct device_node **nextp;
+
+	allnodes = prom_create_node(prom_root_node, NULL);
+	allnodes->path_component_name = "";
+	allnodes->full_name = "/";
+
+	nextp = &allnodes->allnext;
+	allnodes->child = prom_build_tree(allnodes,
+					  prom_getchild(allnodes->node),
+					  &nextp);
+	of_console_init();
+
+	printk("PROM: Built device tree with %u bytes of memory.\n",
+	       prom_early_allocated);
+
+	of_fill_in_cpu_data();
+}
diff --git a/arch/sparc/kernel/prom_irqtrans.c b/arch/sparc/kernel/prom_irqtrans.c
new file mode 100644
index 000000000000..96958c4dce8e
--- /dev/null
+++ b/arch/sparc/kernel/prom_irqtrans.c
@@ -0,0 +1,842 @@
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
+#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/irq.h>
+#include <asm/upa.h>
+
+#include "prom.h"
+
+#ifdef CONFIG_PCI
+/* PSYCHO interrupt mapping support. */
+#define PSYCHO_IMAP_A_SLOT0	0x0c00UL
+#define PSYCHO_IMAP_B_SLOT0	0x0c20UL
+static unsigned long psycho_pcislot_imap_offset(unsigned long ino)
+{
+	unsigned int bus =  (ino & 0x10) >> 4;
+	unsigned int slot = (ino & 0x0c) >> 2;
+
+	if (bus == 0)
+		return PSYCHO_IMAP_A_SLOT0 + (slot * 8);
+	else
+		return PSYCHO_IMAP_B_SLOT0 + (slot * 8);
+}
+
+#define PSYCHO_OBIO_IMAP_BASE	0x1000UL
+
+#define PSYCHO_ONBOARD_IRQ_BASE		0x20
+#define psycho_onboard_imap_offset(__ino) \
+	(PSYCHO_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
+
+#define PSYCHO_ICLR_A_SLOT0	0x1400UL
+#define PSYCHO_ICLR_SCSI	0x1800UL
+
+#define psycho_iclr_offset(ino)					      \
+	((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) :  \
+			(PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
+
+static unsigned int psycho_irq_build(struct device_node *dp,
+				     unsigned int ino,
+				     void *_data)
+{
+	unsigned long controller_regs = (unsigned long) _data;
+	unsigned long imap, iclr;
+	unsigned long imap_off, iclr_off;
+	int inofixup = 0;
+
+	ino &= 0x3f;
+	if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
+		/* PCI slot */
+		imap_off = psycho_pcislot_imap_offset(ino);
+	} else {
+		/* Onboard device */
+		imap_off = psycho_onboard_imap_offset(ino);
+	}
+
+	/* Now build the IRQ bucket. */
+	imap = controller_regs + imap_off;
+
+	iclr_off = psycho_iclr_offset(ino);
+	iclr = controller_regs + iclr_off;
+
+	if ((ino & 0x20) == 0)
+		inofixup = ino & 0x03;
+
+	return build_irq(inofixup, iclr, imap);
+}
+
+static void __init psycho_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = psycho_irq_build;
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = (void *) regs[2].phys_addr;
+}
+
+#define sabre_read(__reg) \
+({	u64 __ret; \
+	__asm__ __volatile__("ldxa [%1] %2, %0" \
+			     : "=r" (__ret) \
+			     : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
+			     : "memory"); \
+	__ret; \
+})
+
+struct sabre_irq_data {
+	unsigned long controller_regs;
+	unsigned int pci_first_busno;
+};
+#define SABRE_CONFIGSPACE	0x001000000UL
+#define SABRE_WRSYNC		0x1c20UL
+
+#define SABRE_CONFIG_BASE(CONFIG_SPACE)	\
+	(CONFIG_SPACE | (1UL << 24))
+#define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG)	\
+	(((unsigned long)(BUS)   << 16) |	\
+	 ((unsigned long)(DEVFN) << 8)  |	\
+	 ((unsigned long)(REG)))
+
+/* When a device lives behind a bridge deeper in the PCI bus topology
+ * than APB, a special sequence must run to make sure all pending DMA
+ * transfers at the time of IRQ delivery are visible in the coherency
+ * domain by the cpu.  This sequence is to perform a read on the far
+ * side of the non-APB bridge, then perform a read of Sabre's DMA
+ * write-sync register.
+ */
+static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
+{
+	unsigned int phys_hi = (unsigned int) (unsigned long) _arg1;
+	struct sabre_irq_data *irq_data = _arg2;
+	unsigned long controller_regs = irq_data->controller_regs;
+	unsigned long sync_reg = controller_regs + SABRE_WRSYNC;
+	unsigned long config_space = controller_regs + SABRE_CONFIGSPACE;
+	unsigned int bus, devfn;
+	u16 _unused;
+
+	config_space = SABRE_CONFIG_BASE(config_space);
+
+	bus = (phys_hi >> 16) & 0xff;
+	devfn = (phys_hi >> 8) & 0xff;
+
+	config_space |= SABRE_CONFIG_ENCODE(bus, devfn, 0x00);
+
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "lduha [%1] %2, %0\n\t"
+			     "membar #Sync"
+			     : "=r" (_unused)
+			     : "r" ((u16 *) config_space),
+			       "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+
+	sabre_read(sync_reg);
+}
+
+#define SABRE_IMAP_A_SLOT0	0x0c00UL
+#define SABRE_IMAP_B_SLOT0	0x0c20UL
+#define SABRE_ICLR_A_SLOT0	0x1400UL
+#define SABRE_ICLR_B_SLOT0	0x1480UL
+#define SABRE_ICLR_SCSI		0x1800UL
+#define SABRE_ICLR_ETH		0x1808UL
+#define SABRE_ICLR_BPP		0x1810UL
+#define SABRE_ICLR_AU_REC	0x1818UL
+#define SABRE_ICLR_AU_PLAY	0x1820UL
+#define SABRE_ICLR_PFAIL	0x1828UL
+#define SABRE_ICLR_KMS		0x1830UL
+#define SABRE_ICLR_FLPY		0x1838UL
+#define SABRE_ICLR_SHW		0x1840UL
+#define SABRE_ICLR_KBD		0x1848UL
+#define SABRE_ICLR_MS		0x1850UL
+#define SABRE_ICLR_SER		0x1858UL
+#define SABRE_ICLR_UE		0x1870UL
+#define SABRE_ICLR_CE		0x1878UL
+#define SABRE_ICLR_PCIERR	0x1880UL
+
+static unsigned long sabre_pcislot_imap_offset(unsigned long ino)
+{
+	unsigned int bus =  (ino & 0x10) >> 4;
+	unsigned int slot = (ino & 0x0c) >> 2;
+
+	if (bus == 0)
+		return SABRE_IMAP_A_SLOT0 + (slot * 8);
+	else
+		return SABRE_IMAP_B_SLOT0 + (slot * 8);
+}
+
+#define SABRE_OBIO_IMAP_BASE	0x1000UL
+#define SABRE_ONBOARD_IRQ_BASE	0x20
+#define sabre_onboard_imap_offset(__ino) \
+	(SABRE_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
+
+#define sabre_iclr_offset(ino)					      \
+	((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) :  \
+			(SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
+
+static int sabre_device_needs_wsync(struct device_node *dp)
+{
+	struct device_node *parent = dp->parent;
+	const char *parent_model, *parent_compat;
+
+	/* This traversal up towards the root is meant to
+	 * handle two cases:
+	 *
+	 * 1) non-PCI bus sitting under PCI, such as 'ebus'
+	 * 2) the PCI controller interrupts themselves, which
+	 *    will use the sabre_irq_build but do not need
+	 *    the DMA synchronization handling
+	 */
+	while (parent) {
+		if (!strcmp(parent->type, "pci"))
+			break;
+		parent = parent->parent;
+	}
+
+	if (!parent)
+		return 0;
+
+	parent_model = of_get_property(parent,
+				       "model", NULL);
+	if (parent_model &&
+	    (!strcmp(parent_model, "SUNW,sabre") ||
+	     !strcmp(parent_model, "SUNW,simba")))
+		return 0;
+
+	parent_compat = of_get_property(parent,
+					"compatible", NULL);
+	if (parent_compat &&
+	    (!strcmp(parent_compat, "pci108e,a000") ||
+	     !strcmp(parent_compat, "pci108e,a001")))
+		return 0;
+
+	return 1;
+}
+
+static unsigned int sabre_irq_build(struct device_node *dp,
+				    unsigned int ino,
+				    void *_data)
+{
+	struct sabre_irq_data *irq_data = _data;
+	unsigned long controller_regs = irq_data->controller_regs;
+	const struct linux_prom_pci_registers *regs;
+	unsigned long imap, iclr;
+	unsigned long imap_off, iclr_off;
+	int inofixup = 0;
+	int virt_irq;
+
+	ino &= 0x3f;
+	if (ino < SABRE_ONBOARD_IRQ_BASE) {
+		/* PCI slot */
+		imap_off = sabre_pcislot_imap_offset(ino);
+	} else {
+		/* onboard device */
+		imap_off = sabre_onboard_imap_offset(ino);
+	}
+
+	/* Now build the IRQ bucket. */
+	imap = controller_regs + imap_off;
+
+	iclr_off = sabre_iclr_offset(ino);
+	iclr = controller_regs + iclr_off;
+
+	if ((ino & 0x20) == 0)
+		inofixup = ino & 0x03;
+
+	virt_irq = build_irq(inofixup, iclr, imap);
+
+	/* If the parent device is a PCI<->PCI bridge other than
+	 * APB, we have to install a pre-handler to ensure that
+	 * all pending DMA is drained before the interrupt handler
+	 * is run.
+	 */
+	regs = of_get_property(dp, "reg", NULL);
+	if (regs && sabre_device_needs_wsync(dp)) {
+		irq_install_pre_handler(virt_irq,
+					sabre_wsync_handler,
+					(void *) (long) regs->phys_hi,
+					(void *) irq_data);
+	}
+
+	return virt_irq;
+}
+
+static void __init sabre_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+	struct sabre_irq_data *irq_data;
+	const u32 *busrange;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = sabre_irq_build;
+
+	irq_data = prom_early_alloc(sizeof(struct sabre_irq_data));
+
+	regs = of_get_property(dp, "reg", NULL);
+	irq_data->controller_regs = regs[0].phys_addr;
+
+	busrange = of_get_property(dp, "bus-range", NULL);
+	irq_data->pci_first_busno = busrange[0];
+
+	dp->irq_trans->data = irq_data;
+}
+
+/* SCHIZO interrupt mapping support.  Unlike Psycho, for this controller the
+ * imap/iclr registers are per-PBM.
+ */
+#define SCHIZO_IMAP_BASE	0x1000UL
+#define SCHIZO_ICLR_BASE	0x1400UL
+
+static unsigned long schizo_imap_offset(unsigned long ino)
+{
+	return SCHIZO_IMAP_BASE + (ino * 8UL);
+}
+
+static unsigned long schizo_iclr_offset(unsigned long ino)
+{
+	return SCHIZO_ICLR_BASE + (ino * 8UL);
+}
+
+static unsigned long schizo_ino_to_iclr(unsigned long pbm_regs,
+					unsigned int ino)
+{
+
+	return pbm_regs + schizo_iclr_offset(ino);
+}
+
+static unsigned long schizo_ino_to_imap(unsigned long pbm_regs,
+					unsigned int ino)
+{
+	return pbm_regs + schizo_imap_offset(ino);
+}
+
+#define schizo_read(__reg) \
+({	u64 __ret; \
+	__asm__ __volatile__("ldxa [%1] %2, %0" \
+			     : "=r" (__ret) \
+			     : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
+			     : "memory"); \
+	__ret; \
+})
+#define schizo_write(__reg, __val) \
+	__asm__ __volatile__("stxa %0, [%1] %2" \
+			     : /* no outputs */ \
+			     : "r" (__val), "r" (__reg), \
+			       "i" (ASI_PHYS_BYPASS_EC_E) \
+			     : "memory")
+
+static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
+{
+	unsigned long sync_reg = (unsigned long) _arg2;
+	u64 mask = 1UL << (ino & IMAP_INO);
+	u64 val;
+	int limit;
+
+	schizo_write(sync_reg, mask);
+
+	limit = 100000;
+	val = 0;
+	while (--limit) {
+		val = schizo_read(sync_reg);
+		if (!(val & mask))
+			break;
+	}
+	if (limit <= 0) {
+		printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
+		       val, mask);
+	}
+
+	if (_arg1) {
+		static unsigned char cacheline[64]
+			__attribute__ ((aligned (64)));
+
+		__asm__ __volatile__("rd %%fprs, %0\n\t"
+				     "or %0, %4, %1\n\t"
+				     "wr %1, 0x0, %%fprs\n\t"
+				     "stda %%f0, [%5] %6\n\t"
+				     "wr %0, 0x0, %%fprs\n\t"
+				     "membar #Sync"
+				     : "=&r" (mask), "=&r" (val)
+				     : "0" (mask), "1" (val),
+				     "i" (FPRS_FEF), "r" (&cacheline[0]),
+				     "i" (ASI_BLK_COMMIT_P));
+	}
+}
+
+struct schizo_irq_data {
+	unsigned long pbm_regs;
+	unsigned long sync_reg;
+	u32 portid;
+	int chip_version;
+};
+
+static unsigned int schizo_irq_build(struct device_node *dp,
+				     unsigned int ino,
+				     void *_data)
+{
+	struct schizo_irq_data *irq_data = _data;
+	unsigned long pbm_regs = irq_data->pbm_regs;
+	unsigned long imap, iclr;
+	int ign_fixup;
+	int virt_irq;
+	int is_tomatillo;
+
+	ino &= 0x3f;
+
+	/* Now build the IRQ bucket. */
+	imap = schizo_ino_to_imap(pbm_regs, ino);
+	iclr = schizo_ino_to_iclr(pbm_regs, ino);
+
+	/* On Schizo, no inofixup occurs.  This is because each
+	 * INO has it's own IMAP register.  On Psycho and Sabre
+	 * there is only one IMAP register for each PCI slot even
+	 * though four different INOs can be generated by each
+	 * PCI slot.
+	 *
+	 * But, for JBUS variants (essentially, Tomatillo), we have
+	 * to fixup the lowest bit of the interrupt group number.
+	 */
+	ign_fixup = 0;
+
+	is_tomatillo = (irq_data->sync_reg != 0UL);
+
+	if (is_tomatillo) {
+		if (irq_data->portid & 1)
+			ign_fixup = (1 << 6);
+	}
+
+	virt_irq = build_irq(ign_fixup, iclr, imap);
+
+	if (is_tomatillo) {
+		irq_install_pre_handler(virt_irq,
+					tomatillo_wsync_handler,
+					((irq_data->chip_version <= 4) ?
+					 (void *) 1 : (void *) 0),
+					(void *) irq_data->sync_reg);
+	}
+
+	return virt_irq;
+}
+
+static void __init __schizo_irq_trans_init(struct device_node *dp,
+					   int is_tomatillo)
+{
+	const struct linux_prom64_registers *regs;
+	struct schizo_irq_data *irq_data;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = schizo_irq_build;
+
+	irq_data = prom_early_alloc(sizeof(struct schizo_irq_data));
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = irq_data;
+
+	irq_data->pbm_regs = regs[0].phys_addr;
+	if (is_tomatillo)
+		irq_data->sync_reg = regs[3].phys_addr + 0x1a18UL;
+	else
+		irq_data->sync_reg = 0UL;
+	irq_data->portid = of_getintprop_default(dp, "portid", 0);
+	irq_data->chip_version = of_getintprop_default(dp, "version#", 0);
+}
+
+static void __init schizo_irq_trans_init(struct device_node *dp)
+{
+	__schizo_irq_trans_init(dp, 0);
+}
+
+static void __init tomatillo_irq_trans_init(struct device_node *dp)
+{
+	__schizo_irq_trans_init(dp, 1);
+}
+
+static unsigned int pci_sun4v_irq_build(struct device_node *dp,
+					unsigned int devino,
+					void *_data)
+{
+	u32 devhandle = (u32) (unsigned long) _data;
+
+	return sun4v_build_irq(devhandle, devino);
+}
+
+static void __init pci_sun4v_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = pci_sun4v_irq_build;
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = (void *) (unsigned long)
+		((regs->phys_addr >> 32UL) & 0x0fffffff);
+}
+
+struct fire_irq_data {
+	unsigned long pbm_regs;
+	u32 portid;
+};
+
+#define FIRE_IMAP_BASE	0x001000
+#define FIRE_ICLR_BASE	0x001400
+
+static unsigned long fire_imap_offset(unsigned long ino)
+{
+	return FIRE_IMAP_BASE + (ino * 8UL);
+}
+
+static unsigned long fire_iclr_offset(unsigned long ino)
+{
+	return FIRE_ICLR_BASE + (ino * 8UL);
+}
+
+static unsigned long fire_ino_to_iclr(unsigned long pbm_regs,
+					    unsigned int ino)
+{
+	return pbm_regs + fire_iclr_offset(ino);
+}
+
+static unsigned long fire_ino_to_imap(unsigned long pbm_regs,
+					    unsigned int ino)
+{
+	return pbm_regs + fire_imap_offset(ino);
+}
+
+static unsigned int fire_irq_build(struct device_node *dp,
+					 unsigned int ino,
+					 void *_data)
+{
+	struct fire_irq_data *irq_data = _data;
+	unsigned long pbm_regs = irq_data->pbm_regs;
+	unsigned long imap, iclr;
+	unsigned long int_ctrlr;
+
+	ino &= 0x3f;
+
+	/* Now build the IRQ bucket. */
+	imap = fire_ino_to_imap(pbm_regs, ino);
+	iclr = fire_ino_to_iclr(pbm_regs, ino);
+
+	/* Set the interrupt controller number.  */
+	int_ctrlr = 1 << 6;
+	upa_writeq(int_ctrlr, imap);
+
+	/* The interrupt map registers do not have an INO field
+	 * like other chips do.  They return zero in the INO
+	 * field, and the interrupt controller number is controlled
+	 * in bits 6 to 9.  So in order for build_irq() to get
+	 * the INO right we pass it in as part of the fixup
+	 * which will get added to the map register zero value
+	 * read by build_irq().
+	 */
+	ino |= (irq_data->portid << 6);
+	ino -= int_ctrlr;
+	return build_irq(ino, iclr, imap);
+}
+
+static void __init fire_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+	struct fire_irq_data *irq_data;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = fire_irq_build;
+
+	irq_data = prom_early_alloc(sizeof(struct fire_irq_data));
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = irq_data;
+
+	irq_data->pbm_regs = regs[0].phys_addr;
+	irq_data->portid = of_getintprop_default(dp, "portid", 0);
+}
+#endif /* CONFIG_PCI */
+
+#ifdef CONFIG_SBUS
+/* INO number to IMAP register offset for SYSIO external IRQ's.
+ * This should conform to both Sunfire/Wildfire server and Fusion
+ * desktop designs.
+ */
+#define SYSIO_IMAP_SLOT0	0x2c00UL
+#define SYSIO_IMAP_SLOT1	0x2c08UL
+#define SYSIO_IMAP_SLOT2	0x2c10UL
+#define SYSIO_IMAP_SLOT3	0x2c18UL
+#define SYSIO_IMAP_SCSI		0x3000UL
+#define SYSIO_IMAP_ETH		0x3008UL
+#define SYSIO_IMAP_BPP		0x3010UL
+#define SYSIO_IMAP_AUDIO	0x3018UL
+#define SYSIO_IMAP_PFAIL	0x3020UL
+#define SYSIO_IMAP_KMS		0x3028UL
+#define SYSIO_IMAP_FLPY		0x3030UL
+#define SYSIO_IMAP_SHW		0x3038UL
+#define SYSIO_IMAP_KBD		0x3040UL
+#define SYSIO_IMAP_MS		0x3048UL
+#define SYSIO_IMAP_SER		0x3050UL
+#define SYSIO_IMAP_TIM0		0x3060UL
+#define SYSIO_IMAP_TIM1		0x3068UL
+#define SYSIO_IMAP_UE		0x3070UL
+#define SYSIO_IMAP_CE		0x3078UL
+#define SYSIO_IMAP_SBERR	0x3080UL
+#define SYSIO_IMAP_PMGMT	0x3088UL
+#define SYSIO_IMAP_GFX		0x3090UL
+#define SYSIO_IMAP_EUPA		0x3098UL
+
+#define bogon     ((unsigned long) -1)
+static unsigned long sysio_irq_offsets[] = {
+	/* SBUS Slot 0 --> 3, level 1 --> 7 */
+	SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
+	SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
+	SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
+	SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
+	SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
+	SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
+	SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
+	SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
+
+	/* Onboard devices (not relevant/used on SunFire). */
+	SYSIO_IMAP_SCSI,
+	SYSIO_IMAP_ETH,
+	SYSIO_IMAP_BPP,
+	bogon,
+	SYSIO_IMAP_AUDIO,
+	SYSIO_IMAP_PFAIL,
+	bogon,
+	bogon,
+	SYSIO_IMAP_KMS,
+	SYSIO_IMAP_FLPY,
+	SYSIO_IMAP_SHW,
+	SYSIO_IMAP_KBD,
+	SYSIO_IMAP_MS,
+	SYSIO_IMAP_SER,
+	bogon,
+	bogon,
+	SYSIO_IMAP_TIM0,
+	SYSIO_IMAP_TIM1,
+	bogon,
+	bogon,
+	SYSIO_IMAP_UE,
+	SYSIO_IMAP_CE,
+	SYSIO_IMAP_SBERR,
+	SYSIO_IMAP_PMGMT,
+	SYSIO_IMAP_GFX,
+	SYSIO_IMAP_EUPA,
+};
+
+#undef bogon
+
+#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
+
+/* Convert Interrupt Mapping register pointer to associated
+ * Interrupt Clear register pointer, SYSIO specific version.
+ */
+#define SYSIO_ICLR_UNUSED0	0x3400UL
+#define SYSIO_ICLR_SLOT0	0x3408UL
+#define SYSIO_ICLR_SLOT1	0x3448UL
+#define SYSIO_ICLR_SLOT2	0x3488UL
+#define SYSIO_ICLR_SLOT3	0x34c8UL
+static unsigned long sysio_imap_to_iclr(unsigned long imap)
+{
+	unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
+	return imap + diff;
+}
+
+static unsigned int sbus_of_build_irq(struct device_node *dp,
+				      unsigned int ino,
+				      void *_data)
+{
+	unsigned long reg_base = (unsigned long) _data;
+	const struct linux_prom_registers *regs;
+	unsigned long imap, iclr;
+	int sbus_slot = 0;
+	int sbus_level = 0;
+
+	ino &= 0x3f;
+
+	regs = of_get_property(dp, "reg", NULL);
+	if (regs)
+		sbus_slot = regs->which_io;
+
+	if (ino < 0x20)
+		ino += (sbus_slot * 8);
+
+	imap = sysio_irq_offsets[ino];
+	if (imap == ((unsigned long)-1)) {
+		prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
+			    ino);
+		prom_halt();
+	}
+	imap += reg_base;
+
+	/* SYSIO inconsistency.  For external SLOTS, we have to select
+	 * the right ICLR register based upon the lower SBUS irq level
+	 * bits.
+	 */
+	if (ino >= 0x20) {
+		iclr = sysio_imap_to_iclr(imap);
+	} else {
+		sbus_level = ino & 0x7;
+
+		switch(sbus_slot) {
+		case 0:
+			iclr = reg_base + SYSIO_ICLR_SLOT0;
+			break;
+		case 1:
+			iclr = reg_base + SYSIO_ICLR_SLOT1;
+			break;
+		case 2:
+			iclr = reg_base + SYSIO_ICLR_SLOT2;
+			break;
+		default:
+		case 3:
+			iclr = reg_base + SYSIO_ICLR_SLOT3;
+			break;
+		};
+
+		iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
+	}
+	return build_irq(sbus_level, iclr, imap);
+}
+
+static void __init sbus_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = sbus_of_build_irq;
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = (void *) (unsigned long) regs->phys_addr;
+}
+#endif /* CONFIG_SBUS */
+
+
+static unsigned int central_build_irq(struct device_node *dp,
+				      unsigned int ino,
+				      void *_data)
+{
+	struct device_node *central_dp = _data;
+	struct of_device *central_op = of_find_device_by_node(central_dp);
+	struct resource *res;
+	unsigned long imap, iclr;
+	u32 tmp;
+
+	if (!strcmp(dp->name, "eeprom")) {
+		res = &central_op->resource[5];
+	} else if (!strcmp(dp->name, "zs")) {
+		res = &central_op->resource[4];
+	} else if (!strcmp(dp->name, "clock-board")) {
+		res = &central_op->resource[3];
+	} else {
+		return ino;
+	}
+
+	imap = res->start + 0x00UL;
+	iclr = res->start + 0x10UL;
+
+	/* Set the INO state to idle, and disable.  */
+	upa_writel(0, iclr);
+	upa_readl(iclr);
+
+	tmp = upa_readl(imap);
+	tmp &= ~0x80000000;
+	upa_writel(tmp, imap);
+
+	return build_irq(0, iclr, imap);
+}
+
+static void __init central_irq_trans_init(struct device_node *dp)
+{
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = central_build_irq;
+
+	dp->irq_trans->data = dp;
+}
+
+struct irq_trans {
+	const char *name;
+	void (*init)(struct device_node *);
+};
+
+#ifdef CONFIG_PCI
+static struct irq_trans __initdata pci_irq_trans_table[] = {
+	{ "SUNW,sabre", sabre_irq_trans_init },
+	{ "pci108e,a000", sabre_irq_trans_init },
+	{ "pci108e,a001", sabre_irq_trans_init },
+	{ "SUNW,psycho", psycho_irq_trans_init },
+	{ "pci108e,8000", psycho_irq_trans_init },
+	{ "SUNW,schizo", schizo_irq_trans_init },
+	{ "pci108e,8001", schizo_irq_trans_init },
+	{ "SUNW,schizo+", schizo_irq_trans_init },
+	{ "pci108e,8002", schizo_irq_trans_init },
+	{ "SUNW,tomatillo", tomatillo_irq_trans_init },
+	{ "pci108e,a801", tomatillo_irq_trans_init },
+	{ "SUNW,sun4v-pci", pci_sun4v_irq_trans_init },
+	{ "pciex108e,80f0", fire_irq_trans_init },
+};
+#endif
+
+static unsigned int sun4v_vdev_irq_build(struct device_node *dp,
+					 unsigned int devino,
+					 void *_data)
+{
+	u32 devhandle = (u32) (unsigned long) _data;
+
+	return sun4v_build_irq(devhandle, devino);
+}
+
+static void __init sun4v_vdev_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = sun4v_vdev_irq_build;
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = (void *) (unsigned long)
+		((regs->phys_addr >> 32UL) & 0x0fffffff);
+}
+
+void __init irq_trans_init(struct device_node *dp)
+{
+#ifdef CONFIG_PCI
+	const char *model;
+	int i;
+#endif
+
+#ifdef CONFIG_PCI
+	model = of_get_property(dp, "model", NULL);
+	if (!model)
+		model = of_get_property(dp, "compatible", NULL);
+	if (model) {
+		for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
+			struct irq_trans *t = &pci_irq_trans_table[i];
+
+			if (!strcmp(model, t->name)) {
+				t->init(dp);
+				return;
+			}
+		}
+	}
+#endif
+#ifdef CONFIG_SBUS
+	if (!strcmp(dp->name, "sbus") ||
+	    !strcmp(dp->name, "sbi")) {
+		sbus_irq_trans_init(dp);
+		return;
+	}
+#endif
+	if (!strcmp(dp->name, "fhc") &&
+	    !strcmp(dp->parent->name, "central")) {
+		central_irq_trans_init(dp);
+		return;
+	}
+	if (!strcmp(dp->name, "virtual-devices") ||
+	    !strcmp(dp->name, "niu")) {
+		sun4v_vdev_irq_trans_init(dp);
+		return;
+	}
+}
diff --git a/arch/sparc/kernel/psycho_common.c b/arch/sparc/kernel/psycho_common.c
new file mode 100644
index 000000000000..790996428c14
--- /dev/null
+++ b/arch/sparc/kernel/psycho_common.c
@@ -0,0 +1,470 @@
+/* psycho_common.c: Code common to PSYCHO and derivative PCI controllers.
+ *
+ * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+
+#include <asm/upa.h>
+
+#include "pci_impl.h"
+#include "iommu_common.h"
+#include "psycho_common.h"
+
+#define  PSYCHO_STRBUF_CTRL_DENAB	0x0000000000000002UL
+#define  PSYCHO_STCERR_WRITE		0x0000000000000002UL
+#define  PSYCHO_STCERR_READ		0x0000000000000001UL
+#define  PSYCHO_STCTAG_PPN		0x0fffffff00000000UL
+#define  PSYCHO_STCTAG_VPN		0x00000000ffffe000UL
+#define  PSYCHO_STCTAG_VALID		0x0000000000000002UL
+#define  PSYCHO_STCTAG_WRITE		0x0000000000000001UL
+#define  PSYCHO_STCLINE_LINDX		0x0000000001e00000UL
+#define  PSYCHO_STCLINE_SPTR		0x00000000001f8000UL
+#define  PSYCHO_STCLINE_LADDR		0x0000000000007f00UL
+#define  PSYCHO_STCLINE_EPTR		0x00000000000000fcUL
+#define  PSYCHO_STCLINE_VALID		0x0000000000000002UL
+#define  PSYCHO_STCLINE_FOFN		0x0000000000000001UL
+
+static DEFINE_SPINLOCK(stc_buf_lock);
+static unsigned long stc_error_buf[128];
+static unsigned long stc_tag_buf[16];
+static unsigned long stc_line_buf[16];
+
+static void psycho_check_stc_error(struct pci_pbm_info *pbm)
+{
+	unsigned long err_base, tag_base, line_base;
+	struct strbuf *strbuf = &pbm->stc;
+	u64 control;
+	int i;
+
+	if (!strbuf->strbuf_control)
+		return;
+
+	err_base = strbuf->strbuf_err_stat;
+	tag_base = strbuf->strbuf_tag_diag;
+	line_base = strbuf->strbuf_line_diag;
+
+	spin_lock(&stc_buf_lock);
+
+	/* This is __REALLY__ dangerous.  When we put the streaming
+	 * buffer into diagnostic mode to probe it's tags and error
+	 * status, we _must_ clear all of the line tag valid bits
+	 * before re-enabling the streaming buffer.  If any dirty data
+	 * lives in the STC when we do this, we will end up
+	 * invalidating it before it has a chance to reach main
+	 * memory.
+	 */
+	control = upa_readq(strbuf->strbuf_control);
+	upa_writeq(control | PSYCHO_STRBUF_CTRL_DENAB, strbuf->strbuf_control);
+	for (i = 0; i < 128; i++) {
+		u64 val;
+
+		val = upa_readq(err_base + (i * 8UL));
+		upa_writeq(0UL, err_base + (i * 8UL));
+		stc_error_buf[i] = val;
+	}
+	for (i = 0; i < 16; i++) {
+		stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL));
+		stc_line_buf[i] = upa_readq(line_base + (i * 8UL));
+		upa_writeq(0UL, tag_base + (i * 8UL));
+		upa_writeq(0UL, line_base + (i * 8UL));
+	}
+
+	/* OK, state is logged, exit diagnostic mode. */
+	upa_writeq(control, strbuf->strbuf_control);
+
+	for (i = 0; i < 16; i++) {
+		int j, saw_error, first, last;
+
+		saw_error = 0;
+		first = i * 8;
+		last = first + 8;
+		for (j = first; j < last; j++) {
+			u64 errval = stc_error_buf[j];
+			if (errval != 0) {
+				saw_error++;
+				printk(KERN_ERR "%s: STC_ERR(%d)[wr(%d)"
+				       "rd(%d)]\n",
+				       pbm->name,
+				       j,
+				       (errval & PSYCHO_STCERR_WRITE) ? 1 : 0,
+				       (errval & PSYCHO_STCERR_READ) ? 1 : 0);
+			}
+		}
+		if (saw_error != 0) {
+			u64 tagval = stc_tag_buf[i];
+			u64 lineval = stc_line_buf[i];
+			printk(KERN_ERR "%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)"
+			       "V(%d)W(%d)]\n",
+			       pbm->name,
+			       i,
+			       ((tagval & PSYCHO_STCTAG_PPN) >> 19UL),
+			       (tagval & PSYCHO_STCTAG_VPN),
+			       ((tagval & PSYCHO_STCTAG_VALID) ? 1 : 0),
+			       ((tagval & PSYCHO_STCTAG_WRITE) ? 1 : 0));
+			printk(KERN_ERR "%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)"
+			       "LADDR(%lx)EP(%lx)V(%d)FOFN(%d)]\n",
+			       pbm->name,
+			       i,
+			       ((lineval & PSYCHO_STCLINE_LINDX) >> 21UL),
+			       ((lineval & PSYCHO_STCLINE_SPTR) >> 15UL),
+			       ((lineval & PSYCHO_STCLINE_LADDR) >> 8UL),
+			       ((lineval & PSYCHO_STCLINE_EPTR) >> 2UL),
+			       ((lineval & PSYCHO_STCLINE_VALID) ? 1 : 0),
+			       ((lineval & PSYCHO_STCLINE_FOFN) ? 1 : 0));
+		}
+	}
+
+	spin_unlock(&stc_buf_lock);
+}
+
+#define PSYCHO_IOMMU_TAG		0xa580UL
+#define PSYCHO_IOMMU_DATA		0xa600UL
+
+static void psycho_record_iommu_tags_and_data(struct pci_pbm_info *pbm,
+					      u64 *tag, u64 *data)
+{
+	int i;
+
+	for (i = 0; i < 16; i++) {
+		unsigned long base = pbm->controller_regs;
+		unsigned long off = i * 8UL;
+
+		tag[i] = upa_readq(base + PSYCHO_IOMMU_TAG+off);
+		data[i] = upa_readq(base + PSYCHO_IOMMU_DATA+off);
+
+		/* Now clear out the entry. */
+		upa_writeq(0, base + PSYCHO_IOMMU_TAG + off);
+		upa_writeq(0, base + PSYCHO_IOMMU_DATA + off);
+	}
+}
+
+#define  PSYCHO_IOMMU_TAG_ERRSTS (0x3UL << 23UL)
+#define  PSYCHO_IOMMU_TAG_ERR	 (0x1UL << 22UL)
+#define  PSYCHO_IOMMU_TAG_WRITE	 (0x1UL << 21UL)
+#define  PSYCHO_IOMMU_TAG_STREAM (0x1UL << 20UL)
+#define  PSYCHO_IOMMU_TAG_SIZE	 (0x1UL << 19UL)
+#define  PSYCHO_IOMMU_TAG_VPAGE	 0x7ffffUL
+#define  PSYCHO_IOMMU_DATA_VALID (1UL << 30UL)
+#define  PSYCHO_IOMMU_DATA_CACHE (1UL << 28UL)
+#define  PSYCHO_IOMMU_DATA_PPAGE 0xfffffffUL
+
+static void psycho_dump_iommu_tags_and_data(struct pci_pbm_info *pbm,
+					    u64 *tag, u64 *data)
+{
+	int i;
+
+	for (i = 0; i < 16; i++) {
+		u64 tag_val, data_val;
+		const char *type_str;
+		tag_val = tag[i];
+		if (!(tag_val & PSYCHO_IOMMU_TAG_ERR))
+			continue;
+
+		data_val = data[i];
+		switch((tag_val & PSYCHO_IOMMU_TAG_ERRSTS) >> 23UL) {
+		case 0:
+			type_str = "Protection Error";
+			break;
+		case 1:
+			type_str = "Invalid Error";
+			break;
+		case 2:
+			type_str = "TimeOut Error";
+			break;
+		case 3:
+		default:
+			type_str = "ECC Error";
+			break;
+		}
+
+		printk(KERN_ERR "%s: IOMMU TAG(%d)[error(%s) wr(%d) "
+		       "str(%d) sz(%dK) vpg(%08lx)]\n",
+		       pbm->name, i, type_str,
+		       ((tag_val & PSYCHO_IOMMU_TAG_WRITE) ? 1 : 0),
+		       ((tag_val & PSYCHO_IOMMU_TAG_STREAM) ? 1 : 0),
+		       ((tag_val & PSYCHO_IOMMU_TAG_SIZE) ? 64 : 8),
+		       (tag_val & PSYCHO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
+		printk(KERN_ERR "%s: IOMMU DATA(%d)[valid(%d) cache(%d) "
+		       "ppg(%016lx)]\n",
+		       pbm->name, i,
+		       ((data_val & PSYCHO_IOMMU_DATA_VALID) ? 1 : 0),
+		       ((data_val & PSYCHO_IOMMU_DATA_CACHE) ? 1 : 0),
+		       (data_val & PSYCHO_IOMMU_DATA_PPAGE)<<IOMMU_PAGE_SHIFT);
+	}
+}
+
+#define  PSYCHO_IOMMU_CTRL_XLTESTAT	0x0000000006000000UL
+#define  PSYCHO_IOMMU_CTRL_XLTEERR	0x0000000001000000UL
+
+void psycho_check_iommu_error(struct pci_pbm_info *pbm,
+			      unsigned long afsr,
+			      unsigned long afar,
+			      enum psycho_error_type type)
+{
+	u64 control, iommu_tag[16], iommu_data[16];
+	struct iommu *iommu = pbm->iommu;
+	unsigned long flags;
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	control = upa_readq(iommu->iommu_control);
+	if (control & PSYCHO_IOMMU_CTRL_XLTEERR) {
+		const char *type_str;
+
+		control &= ~PSYCHO_IOMMU_CTRL_XLTEERR;
+		upa_writeq(control, iommu->iommu_control);
+
+		switch ((control & PSYCHO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
+		case 0:
+			type_str = "Protection Error";
+			break;
+		case 1:
+			type_str = "Invalid Error";
+			break;
+		case 2:
+			type_str = "TimeOut Error";
+			break;
+		case 3:
+		default:
+			type_str = "ECC Error";
+			break;
+		};
+		printk(KERN_ERR "%s: IOMMU Error, type[%s]\n",
+		       pbm->name, type_str);
+
+		/* It is very possible for another DVMA to occur while
+		 * we do this probe, and corrupt the system further.
+		 * But we are so screwed at this point that we are
+		 * likely to crash hard anyways, so get as much
+		 * diagnostic information to the console as we can.
+		 */
+		psycho_record_iommu_tags_and_data(pbm, iommu_tag, iommu_data);
+		psycho_dump_iommu_tags_and_data(pbm, iommu_tag, iommu_data);
+	}
+	psycho_check_stc_error(pbm);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+#define  PSYCHO_PCICTRL_SBH_ERR	 0x0000000800000000UL
+#define  PSYCHO_PCICTRL_SERR	 0x0000000400000000UL
+
+static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm)
+{
+	irqreturn_t ret = IRQ_NONE;
+	u64 csr, csr_error_bits;
+	u16 stat, *addr;
+
+	csr = upa_readq(pbm->pci_csr);
+	csr_error_bits = csr & (PSYCHO_PCICTRL_SBH_ERR | PSYCHO_PCICTRL_SERR);
+	if (csr_error_bits) {
+		/* Clear the errors.  */
+		upa_writeq(csr, pbm->pci_csr);
+
+		/* Log 'em.  */
+		if (csr_error_bits & PSYCHO_PCICTRL_SBH_ERR)
+			printk(KERN_ERR "%s: PCI streaming byte hole "
+			       "error asserted.\n", pbm->name);
+		if (csr_error_bits & PSYCHO_PCICTRL_SERR)
+			printk(KERN_ERR "%s: PCI SERR signal asserted.\n",
+			       pbm->name);
+		ret = IRQ_HANDLED;
+	}
+	addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
+					0, PCI_STATUS);
+	pci_config_read16(addr, &stat);
+	if (stat & (PCI_STATUS_PARITY |
+		    PCI_STATUS_SIG_TARGET_ABORT |
+		    PCI_STATUS_REC_TARGET_ABORT |
+		    PCI_STATUS_REC_MASTER_ABORT |
+		    PCI_STATUS_SIG_SYSTEM_ERROR)) {
+		printk(KERN_ERR "%s: PCI bus error, PCI_STATUS[%04x]\n",
+		       pbm->name, stat);
+		pci_config_write16(addr, 0xffff);
+		ret = IRQ_HANDLED;
+	}
+	return ret;
+}
+
+#define  PSYCHO_PCIAFSR_PMA	0x8000000000000000UL
+#define  PSYCHO_PCIAFSR_PTA	0x4000000000000000UL
+#define  PSYCHO_PCIAFSR_PRTRY	0x2000000000000000UL
+#define  PSYCHO_PCIAFSR_PPERR	0x1000000000000000UL
+#define  PSYCHO_PCIAFSR_SMA	0x0800000000000000UL
+#define  PSYCHO_PCIAFSR_STA	0x0400000000000000UL
+#define  PSYCHO_PCIAFSR_SRTRY	0x0200000000000000UL
+#define  PSYCHO_PCIAFSR_SPERR	0x0100000000000000UL
+#define  PSYCHO_PCIAFSR_RESV1	0x00ff000000000000UL
+#define  PSYCHO_PCIAFSR_BMSK	0x0000ffff00000000UL
+#define  PSYCHO_PCIAFSR_BLK	0x0000000080000000UL
+#define  PSYCHO_PCIAFSR_RESV2	0x0000000040000000UL
+#define  PSYCHO_PCIAFSR_MID	0x000000003e000000UL
+#define  PSYCHO_PCIAFSR_RESV3	0x0000000001ffffffUL
+
+irqreturn_t psycho_pcierr_intr(int irq, void *dev_id)
+{
+	struct pci_pbm_info *pbm = dev_id;
+	u64 afsr, afar, error_bits;
+	int reported;
+
+	afsr = upa_readq(pbm->pci_afsr);
+	afar = upa_readq(pbm->pci_afar);
+	error_bits = afsr &
+		(PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_PTA |
+		 PSYCHO_PCIAFSR_PRTRY | PSYCHO_PCIAFSR_PPERR |
+		 PSYCHO_PCIAFSR_SMA | PSYCHO_PCIAFSR_STA |
+		 PSYCHO_PCIAFSR_SRTRY | PSYCHO_PCIAFSR_SPERR);
+	if (!error_bits)
+		return psycho_pcierr_intr_other(pbm);
+	upa_writeq(error_bits, pbm->pci_afsr);
+	printk(KERN_ERR "%s: PCI Error, primary error type[%s]\n",
+	       pbm->name,
+	       (((error_bits & PSYCHO_PCIAFSR_PMA) ?
+		 "Master Abort" :
+		 ((error_bits & PSYCHO_PCIAFSR_PTA) ?
+		  "Target Abort" :
+		  ((error_bits & PSYCHO_PCIAFSR_PRTRY) ?
+		   "Excessive Retries" :
+		   ((error_bits & PSYCHO_PCIAFSR_PPERR) ?
+		    "Parity Error" : "???"))))));
+	printk(KERN_ERR "%s: bytemask[%04lx] UPA_MID[%02lx] was_block(%d)\n",
+	       pbm->name,
+	       (afsr & PSYCHO_PCIAFSR_BMSK) >> 32UL,
+	       (afsr & PSYCHO_PCIAFSR_MID) >> 25UL,
+	       (afsr & PSYCHO_PCIAFSR_BLK) ? 1 : 0);
+	printk(KERN_ERR "%s: PCI AFAR [%016lx]\n", pbm->name, afar);
+	printk(KERN_ERR "%s: PCI Secondary errors [", pbm->name);
+	reported = 0;
+	if (afsr & PSYCHO_PCIAFSR_SMA) {
+		reported++;
+		printk("(Master Abort)");
+	}
+	if (afsr & PSYCHO_PCIAFSR_STA) {
+		reported++;
+		printk("(Target Abort)");
+	}
+	if (afsr & PSYCHO_PCIAFSR_SRTRY) {
+		reported++;
+		printk("(Excessive Retries)");
+	}
+	if (afsr & PSYCHO_PCIAFSR_SPERR) {
+		reported++;
+		printk("(Parity Error)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	if (error_bits & (PSYCHO_PCIAFSR_PTA | PSYCHO_PCIAFSR_STA)) {
+		psycho_check_iommu_error(pbm, afsr, afar, PCI_ERR);
+		pci_scan_for_target_abort(pbm, pbm->pci_bus);
+	}
+	if (error_bits & (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_SMA))
+		pci_scan_for_master_abort(pbm, pbm->pci_bus);
+
+	if (error_bits & (PSYCHO_PCIAFSR_PPERR | PSYCHO_PCIAFSR_SPERR))
+		pci_scan_for_parity_error(pbm, pbm->pci_bus);
+
+	return IRQ_HANDLED;
+}
+
+static void psycho_iommu_flush(struct pci_pbm_info *pbm)
+{
+	int i;
+
+	for (i = 0; i < 16; i++) {
+		unsigned long off = i * 8;
+
+		upa_writeq(0, pbm->controller_regs + PSYCHO_IOMMU_TAG + off);
+		upa_writeq(0, pbm->controller_regs + PSYCHO_IOMMU_DATA + off);
+	}
+}
+
+#define PSYCHO_IOMMU_CONTROL		0x0200UL
+#define  PSYCHO_IOMMU_CTRL_TSBSZ	0x0000000000070000UL
+#define  PSYCHO_IOMMU_TSBSZ_1K      	0x0000000000000000UL
+#define  PSYCHO_IOMMU_TSBSZ_2K      	0x0000000000010000UL
+#define  PSYCHO_IOMMU_TSBSZ_4K      	0x0000000000020000UL
+#define  PSYCHO_IOMMU_TSBSZ_8K      	0x0000000000030000UL
+#define  PSYCHO_IOMMU_TSBSZ_16K     	0x0000000000040000UL
+#define  PSYCHO_IOMMU_TSBSZ_32K     	0x0000000000050000UL
+#define  PSYCHO_IOMMU_TSBSZ_64K     	0x0000000000060000UL
+#define  PSYCHO_IOMMU_TSBSZ_128K    	0x0000000000070000UL
+#define  PSYCHO_IOMMU_CTRL_TBWSZ    	0x0000000000000004UL
+#define  PSYCHO_IOMMU_CTRL_DENAB    	0x0000000000000002UL
+#define  PSYCHO_IOMMU_CTRL_ENAB     	0x0000000000000001UL
+#define PSYCHO_IOMMU_FLUSH		0x0210UL
+#define PSYCHO_IOMMU_TSBBASE		0x0208UL
+
+int psycho_iommu_init(struct pci_pbm_info *pbm, int tsbsize,
+		      u32 dvma_offset, u32 dma_mask,
+		      unsigned long write_complete_offset)
+{
+	struct iommu *iommu = pbm->iommu;
+	u64 control;
+	int err;
+
+	iommu->iommu_control  = pbm->controller_regs + PSYCHO_IOMMU_CONTROL;
+	iommu->iommu_tsbbase  = pbm->controller_regs + PSYCHO_IOMMU_TSBBASE;
+	iommu->iommu_flush    = pbm->controller_regs + PSYCHO_IOMMU_FLUSH;
+	iommu->iommu_tags     = pbm->controller_regs + PSYCHO_IOMMU_TAG;
+	iommu->write_complete_reg = (pbm->controller_regs +
+				     write_complete_offset);
+
+	iommu->iommu_ctxflush = 0;
+
+	control = upa_readq(iommu->iommu_control);
+	control |= PSYCHO_IOMMU_CTRL_DENAB;
+	upa_writeq(control, iommu->iommu_control);
+
+	psycho_iommu_flush(pbm);
+
+	/* Leave diag mode enabled for full-flushing done in pci_iommu.c */
+	err = iommu_table_init(iommu, tsbsize * 1024 * 8,
+			       dvma_offset, dma_mask, pbm->numa_node);
+	if (err)
+		return err;
+
+	upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
+
+	control = upa_readq(iommu->iommu_control);
+	control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ);
+	control |= PSYCHO_IOMMU_CTRL_ENAB;
+
+	switch (tsbsize) {
+	case 64:
+		control |= PSYCHO_IOMMU_TSBSZ_64K;
+		break;
+	case 128:
+		control |= PSYCHO_IOMMU_TSBSZ_128K;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	upa_writeq(control, iommu->iommu_control);
+
+	return 0;
+
+}
+
+void psycho_pbm_init_common(struct pci_pbm_info *pbm, struct of_device *op,
+			    const char *chip_name, int chip_type)
+{
+	struct device_node *dp = op->node;
+
+	pbm->name = dp->full_name;
+	pbm->numa_node = -1;
+	pbm->chip_type = chip_type;
+	pbm->chip_version = of_getintprop_default(dp, "version#", 0);
+	pbm->chip_revision = of_getintprop_default(dp, "module-revision#", 0);
+	pbm->op = op;
+	pbm->pci_ops = &sun4u_pci_ops;
+	pbm->config_space_reg_bits = 8;
+	pbm->index = pci_num_pbms++;
+	pci_get_pbm_props(pbm);
+	pci_determine_mem_io_space(pbm);
+
+	printk(KERN_INFO "%s: %s PCI Bus Module ver[%x:%x]\n",
+	       pbm->name, chip_name,
+	       pbm->chip_version, pbm->chip_revision);
+}
diff --git a/arch/sparc/kernel/psycho_common.h b/arch/sparc/kernel/psycho_common.h
new file mode 100644
index 000000000000..092c278ef28d
--- /dev/null
+++ b/arch/sparc/kernel/psycho_common.h
@@ -0,0 +1,48 @@
+#ifndef _PSYCHO_COMMON_H
+#define _PSYCHO_COMMON_H
+
+/* U2P Programmer's Manual, page 13-55, configuration space
+ * address format:
+ * 
+ *  32             24 23 16 15    11 10       8 7   2  1 0
+ * ---------------------------------------------------------
+ * |0 0 0 0 0 0 0 0 1| bus | device | function | reg | 0 0 |
+ * ---------------------------------------------------------
+ */
+#define PSYCHO_CONFIG_BASE(PBM)	\
+	((PBM)->config_space | (1UL << 24))
+#define PSYCHO_CONFIG_ENCODE(BUS, DEVFN, REG)	\
+	(((unsigned long)(BUS)   << 16) |	\
+	 ((unsigned long)(DEVFN) << 8)  |	\
+	 ((unsigned long)(REG)))
+
+static inline void *psycho_pci_config_mkaddr(struct pci_pbm_info *pbm,
+					     unsigned char bus,
+					     unsigned int devfn,
+					     int where)
+{
+	return (void *)
+		(PSYCHO_CONFIG_BASE(pbm) |
+		 PSYCHO_CONFIG_ENCODE(bus, devfn, where));
+}
+
+enum psycho_error_type {
+	UE_ERR, CE_ERR, PCI_ERR
+};
+
+extern void psycho_check_iommu_error(struct pci_pbm_info *pbm,
+				     unsigned long afsr,
+				     unsigned long afar,
+				     enum psycho_error_type type);
+
+extern irqreturn_t psycho_pcierr_intr(int irq, void *dev_id);
+
+extern int psycho_iommu_init(struct pci_pbm_info *pbm, int tsbsize,
+			     u32 dvma_offset, u32 dma_mask,
+			     unsigned long write_complete_offset);
+
+extern void psycho_pbm_init_common(struct pci_pbm_info *pbm,
+				   struct of_device *op,
+				   const char *chip_name, int chip_type);
+
+#endif /* _PSYCHO_COMMON_H */
diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace_32.c
index 8ce6285a06d5..8ce6285a06d5 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace_32.c
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
new file mode 100644
index 000000000000..a941c610e7ce
--- /dev/null
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -0,0 +1,1090 @@
+/* ptrace.c: Sparc process tracing support.
+ *
+ * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ *
+ * Based upon code written by Ross Biro, Linus Torvalds, Bob Manson,
+ * and David Mosberger.
+ *
+ * Added Linux support -miguel (weird, eh?, the original code was meant
+ * to emulate SunOS).
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/security.h>
+#include <linux/seccomp.h>
+#include <linux/audit.h>
+#include <linux/signal.h>
+#include <linux/regset.h>
+#include <linux/tracehook.h>
+#include <linux/compat.h>
+#include <linux/elf.h>
+
+#include <asm/asi.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/psrcompat.h>
+#include <asm/visasm.h>
+#include <asm/spitfire.h>
+#include <asm/page.h>
+#include <asm/cpudata.h>
+#include <asm/cacheflush.h>
+
+#include "entry.h"
+
+/* #define ALLOW_INIT_TRACING */
+
+/*
+ * Called by kernel/ptrace.c when detaching..
+ *
+ * Make sure single step bits etc are not set.
+ */
+void ptrace_disable(struct task_struct *child)
+{
+	/* nothing to do */
+}
+
+/* To get the necessary page struct, access_process_vm() first calls
+ * get_user_pages().  This has done a flush_dcache_page() on the
+ * accessed page.  Then our caller (copy_{to,from}_user_page()) did
+ * to memcpy to read/write the data from that page.
+ *
+ * Now, the only thing we have to do is:
+ * 1) flush the D-cache if it's possible than an illegal alias
+ *    has been created
+ * 2) flush the I-cache if this is pre-cheetah and we did a write
+ */
+void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
+			 unsigned long uaddr, void *kaddr,
+			 unsigned long len, int write)
+{
+	BUG_ON(len > PAGE_SIZE);
+
+	if (tlb_type == hypervisor)
+		return;
+
+	preempt_disable();
+
+#ifdef DCACHE_ALIASING_POSSIBLE
+	/* If bit 13 of the kernel address we used to access the
+	 * user page is the same as the virtual address that page
+	 * is mapped to in the user's address space, we can skip the
+	 * D-cache flush.
+	 */
+	if ((uaddr ^ (unsigned long) kaddr) & (1UL << 13)) {
+		unsigned long start = __pa(kaddr);
+		unsigned long end = start + len;
+		unsigned long dcache_line_size;
+
+		dcache_line_size = local_cpu_data().dcache_line_size;
+
+		if (tlb_type == spitfire) {
+			for (; start < end; start += dcache_line_size)
+				spitfire_put_dcache_tag(start & 0x3fe0, 0x0);
+		} else {
+			start &= ~(dcache_line_size - 1);
+			for (; start < end; start += dcache_line_size)
+				__asm__ __volatile__(
+					"stxa %%g0, [%0] %1\n\t"
+					"membar #Sync"
+					: /* no outputs */
+					: "r" (start),
+					"i" (ASI_DCACHE_INVALIDATE));
+		}
+	}
+#endif
+	if (write && tlb_type == spitfire) {
+		unsigned long start = (unsigned long) kaddr;
+		unsigned long end = start + len;
+		unsigned long icache_line_size;
+
+		icache_line_size = local_cpu_data().icache_line_size;
+
+		for (; start < end; start += icache_line_size)
+			flushi(start);
+	}
+
+	preempt_enable();
+}
+
+static int get_from_target(struct task_struct *target, unsigned long uaddr,
+			   void *kbuf, int len)
+{
+	if (target == current) {
+		if (copy_from_user(kbuf, (void __user *) uaddr, len))
+			return -EFAULT;
+	} else {
+		int len2 = access_process_vm(target, uaddr, kbuf, len, 0);
+		if (len2 != len)
+			return -EFAULT;
+	}
+	return 0;
+}
+
+static int set_to_target(struct task_struct *target, unsigned long uaddr,
+			 void *kbuf, int len)
+{
+	if (target == current) {
+		if (copy_to_user((void __user *) uaddr, kbuf, len))
+			return -EFAULT;
+	} else {
+		int len2 = access_process_vm(target, uaddr, kbuf, len, 1);
+		if (len2 != len)
+			return -EFAULT;
+	}
+	return 0;
+}
+
+static int regwindow64_get(struct task_struct *target,
+			   const struct pt_regs *regs,
+			   struct reg_window *wbuf)
+{
+	unsigned long rw_addr = regs->u_regs[UREG_I6];
+
+	if (test_tsk_thread_flag(current, TIF_32BIT)) {
+		struct reg_window32 win32;
+		int i;
+
+		if (get_from_target(target, rw_addr, &win32, sizeof(win32)))
+			return -EFAULT;
+		for (i = 0; i < 8; i++)
+			wbuf->locals[i] = win32.locals[i];
+		for (i = 0; i < 8; i++)
+			wbuf->ins[i] = win32.ins[i];
+	} else {
+		rw_addr += STACK_BIAS;
+		if (get_from_target(target, rw_addr, wbuf, sizeof(*wbuf)))
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
+static int regwindow64_set(struct task_struct *target,
+			   const struct pt_regs *regs,
+			   struct reg_window *wbuf)
+{
+	unsigned long rw_addr = regs->u_regs[UREG_I6];
+
+	if (test_tsk_thread_flag(current, TIF_32BIT)) {
+		struct reg_window32 win32;
+		int i;
+
+		for (i = 0; i < 8; i++)
+			win32.locals[i] = wbuf->locals[i];
+		for (i = 0; i < 8; i++)
+			win32.ins[i] = wbuf->ins[i];
+
+		if (set_to_target(target, rw_addr, &win32, sizeof(win32)))
+			return -EFAULT;
+	} else {
+		rw_addr += STACK_BIAS;
+		if (set_to_target(target, rw_addr, wbuf, sizeof(*wbuf)))
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
+enum sparc_regset {
+	REGSET_GENERAL,
+	REGSET_FP,
+};
+
+static int genregs64_get(struct task_struct *target,
+			 const struct user_regset *regset,
+			 unsigned int pos, unsigned int count,
+			 void *kbuf, void __user *ubuf)
+{
+	const struct pt_regs *regs = task_pt_regs(target);
+	int ret;
+
+	if (target == current)
+		flushw_user();
+
+	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+				  regs->u_regs,
+				  0, 16 * sizeof(u64));
+	if (!ret && count && pos < (32 * sizeof(u64))) {
+		struct reg_window window;
+
+		if (regwindow64_get(target, regs, &window))
+			return -EFAULT;
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  &window,
+					  16 * sizeof(u64),
+					  32 * sizeof(u64));
+	}
+
+	if (!ret) {
+		/* TSTATE, TPC, TNPC */
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  &regs->tstate,
+					  32 * sizeof(u64),
+					  35 * sizeof(u64));
+	}
+
+	if (!ret) {
+		unsigned long y = regs->y;
+
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  &y,
+					  35 * sizeof(u64),
+					  36 * sizeof(u64));
+	}
+
+	if (!ret) {
+		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
+					       36 * sizeof(u64), -1);
+
+	}
+	return ret;
+}
+
+static int genregs64_set(struct task_struct *target,
+			 const struct user_regset *regset,
+			 unsigned int pos, unsigned int count,
+			 const void *kbuf, const void __user *ubuf)
+{
+	struct pt_regs *regs = task_pt_regs(target);
+	int ret;
+
+	if (target == current)
+		flushw_user();
+
+	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+				 regs->u_regs,
+				 0, 16 * sizeof(u64));
+	if (!ret && count && pos < (32 * sizeof(u64))) {
+		struct reg_window window;
+
+		if (regwindow64_get(target, regs, &window))
+			return -EFAULT;
+
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+					 &window,
+					 16 * sizeof(u64),
+					 32 * sizeof(u64));
+
+		if (!ret &&
+		    regwindow64_set(target, regs, &window))
+			return -EFAULT;
+	}
+
+	if (!ret && count > 0) {
+		unsigned long tstate;
+
+		/* TSTATE */
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+					 &tstate,
+					 32 * sizeof(u64),
+					 33 * sizeof(u64));
+		if (!ret) {
+			/* Only the condition codes and the "in syscall"
+			 * state can be modified in the %tstate register.
+			 */
+			tstate &= (TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
+			regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
+			regs->tstate |= tstate;
+		}
+	}
+
+	if (!ret) {
+		/* TPC, TNPC */
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+					 &regs->tpc,
+					 33 * sizeof(u64),
+					 35 * sizeof(u64));
+	}
+
+	if (!ret) {
+		unsigned long y;
+
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+					 &y,
+					 35 * sizeof(u64),
+					 36 * sizeof(u64));
+		if (!ret)
+			regs->y = y;
+	}
+
+	if (!ret)
+		ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+						36 * sizeof(u64), -1);
+
+	return ret;
+}
+
+static int fpregs64_get(struct task_struct *target,
+			const struct user_regset *regset,
+			unsigned int pos, unsigned int count,
+			void *kbuf, void __user *ubuf)
+{
+	const unsigned long *fpregs = task_thread_info(target)->fpregs;
+	unsigned long fprs, fsr, gsr;
+	int ret;
+
+	if (target == current)
+		save_and_clear_fpu();
+
+	fprs = task_thread_info(target)->fpsaved[0];
+
+	if (fprs & FPRS_DL)
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  fpregs,
+					  0, 16 * sizeof(u64));
+	else
+		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
+					       0,
+					       16 * sizeof(u64));
+
+	if (!ret) {
+		if (fprs & FPRS_DU)
+			ret = user_regset_copyout(&pos, &count,
+						  &kbuf, &ubuf,
+						  fpregs + 16,
+						  16 * sizeof(u64),
+						  32 * sizeof(u64));
+		else
+			ret = user_regset_copyout_zero(&pos, &count,
+						       &kbuf, &ubuf,
+						       16 * sizeof(u64),
+						       32 * sizeof(u64));
+	}
+
+	if (fprs & FPRS_FEF) {
+		fsr = task_thread_info(target)->xfsr[0];
+		gsr = task_thread_info(target)->gsr[0];
+	} else {
+		fsr = gsr = 0;
+	}
+
+	if (!ret)
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  &fsr,
+					  32 * sizeof(u64),
+					  33 * sizeof(u64));
+	if (!ret)
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  &gsr,
+					  33 * sizeof(u64),
+					  34 * sizeof(u64));
+	if (!ret)
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  &fprs,
+					  34 * sizeof(u64),
+					  35 * sizeof(u64));
+
+	if (!ret)
+		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
+					       35 * sizeof(u64), -1);
+
+	return ret;
+}
+
+static int fpregs64_set(struct task_struct *target,
+			const struct user_regset *regset,
+			unsigned int pos, unsigned int count,
+			const void *kbuf, const void __user *ubuf)
+{
+	unsigned long *fpregs = task_thread_info(target)->fpregs;
+	unsigned long fprs;
+	int ret;
+
+	if (target == current)
+		save_and_clear_fpu();
+
+	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+				 fpregs,
+				 0, 32 * sizeof(u64));
+	if (!ret)
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+					 task_thread_info(target)->xfsr,
+					 32 * sizeof(u64),
+					 33 * sizeof(u64));
+	if (!ret)
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+					 task_thread_info(target)->gsr,
+					 33 * sizeof(u64),
+					 34 * sizeof(u64));
+
+	fprs = task_thread_info(target)->fpsaved[0];
+	if (!ret && count > 0) {
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+					 &fprs,
+					 34 * sizeof(u64),
+					 35 * sizeof(u64));
+	}
+
+	fprs |= (FPRS_FEF | FPRS_DL | FPRS_DU);
+	task_thread_info(target)->fpsaved[0] = fprs;
+
+	if (!ret)
+		ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+						35 * sizeof(u64), -1);
+	return ret;
+}
+
+static const struct user_regset sparc64_regsets[] = {
+	/* Format is:
+	 * 	G0 --> G7
+	 *	O0 --> O7
+	 *	L0 --> L7
+	 *	I0 --> I7
+	 *	TSTATE, TPC, TNPC, Y
+	 */
+	[REGSET_GENERAL] = {
+		.core_note_type = NT_PRSTATUS,
+		.n = 36,
+		.size = sizeof(u64), .align = sizeof(u64),
+		.get = genregs64_get, .set = genregs64_set
+	},
+	/* Format is:
+	 *	F0 --> F63
+	 *	FSR
+	 *	GSR
+	 *	FPRS
+	 */
+	[REGSET_FP] = {
+		.core_note_type = NT_PRFPREG,
+		.n = 35,
+		.size = sizeof(u64), .align = sizeof(u64),
+		.get = fpregs64_get, .set = fpregs64_set
+	},
+};
+
+static const struct user_regset_view user_sparc64_view = {
+	.name = "sparc64", .e_machine = EM_SPARCV9,
+	.regsets = sparc64_regsets, .n = ARRAY_SIZE(sparc64_regsets)
+};
+
+#ifdef CONFIG_COMPAT
+static int genregs32_get(struct task_struct *target,
+			 const struct user_regset *regset,
+			 unsigned int pos, unsigned int count,
+			 void *kbuf, void __user *ubuf)
+{
+	const struct pt_regs *regs = task_pt_regs(target);
+	compat_ulong_t __user *reg_window;
+	compat_ulong_t *k = kbuf;
+	compat_ulong_t __user *u = ubuf;
+	compat_ulong_t reg;
+
+	if (target == current)
+		flushw_user();
+
+	pos /= sizeof(reg);
+	count /= sizeof(reg);
+
+	if (kbuf) {
+		for (; count > 0 && pos < 16; count--)
+			*k++ = regs->u_regs[pos++];
+
+		reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
+		if (target == current) {
+			for (; count > 0 && pos < 32; count--) {
+				if (get_user(*k++, &reg_window[pos++]))
+					return -EFAULT;
+			}
+		} else {
+			for (; count > 0 && pos < 32; count--) {
+				if (access_process_vm(target,
+						      (unsigned long)
+						      &reg_window[pos],
+						      k, sizeof(*k), 0)
+				    != sizeof(*k))
+					return -EFAULT;
+				k++;
+				pos++;
+			}
+		}
+	} else {
+		for (; count > 0 && pos < 16; count--) {
+			if (put_user((compat_ulong_t) regs->u_regs[pos++], u++))
+				return -EFAULT;
+		}
+
+		reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
+		if (target == current) {
+			for (; count > 0 && pos < 32; count--) {
+				if (get_user(reg, &reg_window[pos++]) ||
+				    put_user(reg, u++))
+					return -EFAULT;
+			}
+		} else {
+			for (; count > 0 && pos < 32; count--) {
+				if (access_process_vm(target,
+						      (unsigned long)
+						      &reg_window[pos],
+						      &reg, sizeof(reg), 0)
+				    != sizeof(reg))
+					return -EFAULT;
+				if (access_process_vm(target,
+						      (unsigned long) u,
+						      &reg, sizeof(reg), 1)
+				    != sizeof(reg))
+					return -EFAULT;
+				pos++;
+				u++;
+			}
+		}
+	}
+	while (count > 0) {
+		switch (pos) {
+		case 32: /* PSR */
+			reg = tstate_to_psr(regs->tstate);
+			break;
+		case 33: /* PC */
+			reg = regs->tpc;
+			break;
+		case 34: /* NPC */
+			reg = regs->tnpc;
+			break;
+		case 35: /* Y */
+			reg = regs->y;
+			break;
+		case 36: /* WIM */
+		case 37: /* TBR */
+			reg = 0;
+			break;
+		default:
+			goto finish;
+		}
+
+		if (kbuf)
+			*k++ = reg;
+		else if (put_user(reg, u++))
+			return -EFAULT;
+		pos++;
+		count--;
+	}
+finish:
+	pos *= sizeof(reg);
+	count *= sizeof(reg);
+
+	return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
+					38 * sizeof(reg), -1);
+}
+
+static int genregs32_set(struct task_struct *target,
+			 const struct user_regset *regset,
+			 unsigned int pos, unsigned int count,
+			 const void *kbuf, const void __user *ubuf)
+{
+	struct pt_regs *regs = task_pt_regs(target);
+	compat_ulong_t __user *reg_window;
+	const compat_ulong_t *k = kbuf;
+	const compat_ulong_t __user *u = ubuf;
+	compat_ulong_t reg;
+
+	if (target == current)
+		flushw_user();
+
+	pos /= sizeof(reg);
+	count /= sizeof(reg);
+
+	if (kbuf) {
+		for (; count > 0 && pos < 16; count--)
+			regs->u_regs[pos++] = *k++;
+
+		reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
+		if (target == current) {
+			for (; count > 0 && pos < 32; count--) {
+				if (put_user(*k++, &reg_window[pos++]))
+					return -EFAULT;
+			}
+		} else {
+			for (; count > 0 && pos < 32; count--) {
+				if (access_process_vm(target,
+						      (unsigned long)
+						      &reg_window[pos],
+						      (void *) k,
+						      sizeof(*k), 1)
+				    != sizeof(*k))
+					return -EFAULT;
+				k++;
+				pos++;
+			}
+		}
+	} else {
+		for (; count > 0 && pos < 16; count--) {
+			if (get_user(reg, u++))
+				return -EFAULT;
+			regs->u_regs[pos++] = reg;
+		}
+
+		reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
+		if (target == current) {
+			for (; count > 0 && pos < 32; count--) {
+				if (get_user(reg, u++) ||
+				    put_user(reg, &reg_window[pos++]))
+					return -EFAULT;
+			}
+		} else {
+			for (; count > 0 && pos < 32; count--) {
+				if (access_process_vm(target,
+						      (unsigned long)
+						      u,
+						      &reg, sizeof(reg), 0)
+				    != sizeof(reg))
+					return -EFAULT;
+				if (access_process_vm(target,
+						      (unsigned long)
+						      &reg_window[pos],
+						      &reg, sizeof(reg), 1)
+				    != sizeof(reg))
+					return -EFAULT;
+				pos++;
+				u++;
+			}
+		}
+	}
+	while (count > 0) {
+		unsigned long tstate;
+
+		if (kbuf)
+			reg = *k++;
+		else if (get_user(reg, u++))
+			return -EFAULT;
+
+		switch (pos) {
+		case 32: /* PSR */
+			tstate = regs->tstate;
+			tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
+			tstate |= psr_to_tstate_icc(reg);
+			if (reg & PSR_SYSCALL)
+				tstate |= TSTATE_SYSCALL;
+			regs->tstate = tstate;
+			break;
+		case 33: /* PC */
+			regs->tpc = reg;
+			break;
+		case 34: /* NPC */
+			regs->tnpc = reg;
+			break;
+		case 35: /* Y */
+			regs->y = reg;
+			break;
+		case 36: /* WIM */
+		case 37: /* TBR */
+			break;
+		default:
+			goto finish;
+		}
+
+		pos++;
+		count--;
+	}
+finish:
+	pos *= sizeof(reg);
+	count *= sizeof(reg);
+
+	return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+					 38 * sizeof(reg), -1);
+}
+
+static int fpregs32_get(struct task_struct *target,
+			const struct user_regset *regset,
+			unsigned int pos, unsigned int count,
+			void *kbuf, void __user *ubuf)
+{
+	const unsigned long *fpregs = task_thread_info(target)->fpregs;
+	compat_ulong_t enabled;
+	unsigned long fprs;
+	compat_ulong_t fsr;
+	int ret = 0;
+
+	if (target == current)
+		save_and_clear_fpu();
+
+	fprs = task_thread_info(target)->fpsaved[0];
+	if (fprs & FPRS_FEF) {
+		fsr = task_thread_info(target)->xfsr[0];
+		enabled = 1;
+	} else {
+		fsr = 0;
+		enabled = 0;
+	}
+
+	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+				  fpregs,
+				  0, 32 * sizeof(u32));
+
+	if (!ret)
+		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
+					       32 * sizeof(u32),
+					       33 * sizeof(u32));
+	if (!ret)
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  &fsr,
+					  33 * sizeof(u32),
+					  34 * sizeof(u32));
+
+	if (!ret) {
+		compat_ulong_t val;
+
+		val = (enabled << 8) | (8 << 16);
+		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
+					  &val,
+					  34 * sizeof(u32),
+					  35 * sizeof(u32));
+	}
+
+	if (!ret)
+		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
+					       35 * sizeof(u32), -1);
+
+	return ret;
+}
+
+static int fpregs32_set(struct task_struct *target,
+			const struct user_regset *regset,
+			unsigned int pos, unsigned int count,
+			const void *kbuf, const void __user *ubuf)
+{
+	unsigned long *fpregs = task_thread_info(target)->fpregs;
+	unsigned long fprs;
+	int ret;
+
+	if (target == current)
+		save_and_clear_fpu();
+
+	fprs = task_thread_info(target)->fpsaved[0];
+
+	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+				 fpregs,
+				 0, 32 * sizeof(u32));
+	if (!ret)
+		user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+					  32 * sizeof(u32),
+					  33 * sizeof(u32));
+	if (!ret && count > 0) {
+		compat_ulong_t fsr;
+		unsigned long val;
+
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+					 &fsr,
+					 33 * sizeof(u32),
+					 34 * sizeof(u32));
+		if (!ret) {
+			val = task_thread_info(target)->xfsr[0];
+			val &= 0xffffffff00000000UL;
+			val |= fsr;
+			task_thread_info(target)->xfsr[0] = val;
+		}
+	}
+
+	fprs |= (FPRS_FEF | FPRS_DL);
+	task_thread_info(target)->fpsaved[0] = fprs;
+
+	if (!ret)
+		ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+						34 * sizeof(u32), -1);
+	return ret;
+}
+
+static const struct user_regset sparc32_regsets[] = {
+	/* Format is:
+	 * 	G0 --> G7
+	 *	O0 --> O7
+	 *	L0 --> L7
+	 *	I0 --> I7
+	 *	PSR, PC, nPC, Y, WIM, TBR
+	 */
+	[REGSET_GENERAL] = {
+		.core_note_type = NT_PRSTATUS,
+		.n = 38,
+		.size = sizeof(u32), .align = sizeof(u32),
+		.get = genregs32_get, .set = genregs32_set
+	},
+	/* Format is:
+	 *	F0 --> F31
+	 *	empty 32-bit word
+	 *	FSR (32--bit word)
+	 *	FPU QUEUE COUNT (8-bit char)
+	 *	FPU QUEUE ENTRYSIZE (8-bit char)
+	 *	FPU ENABLED (8-bit char)
+	 *	empty 8-bit char
+	 *	FPU QUEUE (64 32-bit ints)
+	 */
+	[REGSET_FP] = {
+		.core_note_type = NT_PRFPREG,
+		.n = 99,
+		.size = sizeof(u32), .align = sizeof(u32),
+		.get = fpregs32_get, .set = fpregs32_set
+	},
+};
+
+static const struct user_regset_view user_sparc32_view = {
+	.name = "sparc", .e_machine = EM_SPARC,
+	.regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
+};
+#endif /* CONFIG_COMPAT */
+
+const struct user_regset_view *task_user_regset_view(struct task_struct *task)
+{
+#ifdef CONFIG_COMPAT
+	if (test_tsk_thread_flag(task, TIF_32BIT))
+		return &user_sparc32_view;
+#endif
+	return &user_sparc64_view;
+}
+
+#ifdef CONFIG_COMPAT
+struct compat_fps {
+	unsigned int regs[32];
+	unsigned int fsr;
+	unsigned int flags;
+	unsigned int extra;
+	unsigned int fpqd;
+	struct compat_fq {
+		unsigned int insnaddr;
+		unsigned int insn;
+	} fpq[16];
+};
+
+long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+			compat_ulong_t caddr, compat_ulong_t cdata)
+{
+	const struct user_regset_view *view = task_user_regset_view(current);
+	compat_ulong_t caddr2 = task_pt_regs(current)->u_regs[UREG_I4];
+	struct pt_regs32 __user *pregs;
+	struct compat_fps __user *fps;
+	unsigned long addr2 = caddr2;
+	unsigned long addr = caddr;
+	unsigned long data = cdata;
+	int ret;
+
+	pregs = (struct pt_regs32 __user *) addr;
+	fps = (struct compat_fps __user *) addr;
+
+	switch (request) {
+	case PTRACE_PEEKUSR:
+		ret = (addr != 0) ? -EIO : 0;
+		break;
+
+	case PTRACE_GETREGS:
+		ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+					  32 * sizeof(u32),
+					  4 * sizeof(u32),
+					  &pregs->psr);
+		if (!ret)
+			ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+						  1 * sizeof(u32),
+						  15 * sizeof(u32),
+						  &pregs->u_regs[0]);
+		break;
+
+	case PTRACE_SETREGS:
+		ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+					    32 * sizeof(u32),
+					    4 * sizeof(u32),
+					    &pregs->psr);
+		if (!ret)
+			ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+						    1 * sizeof(u32),
+						    15 * sizeof(u32),
+						    &pregs->u_regs[0]);
+		break;
+
+	case PTRACE_GETFPREGS:
+		ret = copy_regset_to_user(child, view, REGSET_FP,
+					  0 * sizeof(u32),
+					  32 * sizeof(u32),
+					  &fps->regs[0]);
+		if (!ret)
+			ret = copy_regset_to_user(child, view, REGSET_FP,
+						  33 * sizeof(u32),
+						  1 * sizeof(u32),
+						  &fps->fsr);
+		if (!ret) {
+			if (__put_user(0, &fps->flags) ||
+			    __put_user(0, &fps->extra) ||
+			    __put_user(0, &fps->fpqd) ||
+			    clear_user(&fps->fpq[0], 32 * sizeof(unsigned int)))
+				ret = -EFAULT;
+		}
+		break;
+
+	case PTRACE_SETFPREGS:
+		ret = copy_regset_from_user(child, view, REGSET_FP,
+					    0 * sizeof(u32),
+					    32 * sizeof(u32),
+					    &fps->regs[0]);
+		if (!ret)
+			ret = copy_regset_from_user(child, view, REGSET_FP,
+						    33 * sizeof(u32),
+						    1 * sizeof(u32),
+						    &fps->fsr);
+		break;
+
+	case PTRACE_READTEXT:
+	case PTRACE_READDATA:
+		ret = ptrace_readdata(child, addr,
+				      (char __user *)addr2, data);
+		if (ret == data)
+			ret = 0;
+		else if (ret >= 0)
+			ret = -EIO;
+		break;
+
+	case PTRACE_WRITETEXT:
+	case PTRACE_WRITEDATA:
+		ret = ptrace_writedata(child, (char __user *) addr2,
+				       addr, data);
+		if (ret == data)
+			ret = 0;
+		else if (ret >= 0)
+			ret = -EIO;
+		break;
+
+	default:
+		if (request == PTRACE_SPARC_DETACH)
+			request = PTRACE_DETACH;
+		ret = compat_ptrace_request(child, request, addr, data);
+		break;
+	}
+
+	return ret;
+}
+#endif /* CONFIG_COMPAT */
+
+struct fps {
+	unsigned int regs[64];
+	unsigned long fsr;
+};
+
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+{
+	const struct user_regset_view *view = task_user_regset_view(current);
+	unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
+	struct pt_regs __user *pregs;
+	struct fps __user *fps;
+	int ret;
+
+	pregs = (struct pt_regs __user *) (unsigned long) addr;
+	fps = (struct fps __user *) (unsigned long) addr;
+
+	switch (request) {
+	case PTRACE_PEEKUSR:
+		ret = (addr != 0) ? -EIO : 0;
+		break;
+
+	case PTRACE_GETREGS64:
+		ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+					  1 * sizeof(u64),
+					  15 * sizeof(u64),
+					  &pregs->u_regs[0]);
+		if (!ret) {
+			/* XXX doesn't handle 'y' register correctly XXX */
+			ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+						  32 * sizeof(u64),
+						  4 * sizeof(u64),
+						  &pregs->tstate);
+		}
+		break;
+
+	case PTRACE_SETREGS64:
+		ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+					    1 * sizeof(u64),
+					    15 * sizeof(u64),
+					    &pregs->u_regs[0]);
+		if (!ret) {
+			/* XXX doesn't handle 'y' register correctly XXX */
+			ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+						    32 * sizeof(u64),
+						    4 * sizeof(u64),
+						    &pregs->tstate);
+		}
+		break;
+
+	case PTRACE_GETFPREGS64:
+		ret = copy_regset_to_user(child, view, REGSET_FP,
+					  0 * sizeof(u64),
+					  33 * sizeof(u64),
+					  fps);
+		break;
+
+	case PTRACE_SETFPREGS64:
+		ret = copy_regset_from_user(child, view, REGSET_FP,
+					  0 * sizeof(u64),
+					  33 * sizeof(u64),
+					  fps);
+		break;
+
+	case PTRACE_READTEXT:
+	case PTRACE_READDATA:
+		ret = ptrace_readdata(child, addr,
+				      (char __user *)addr2, data);
+		if (ret == data)
+			ret = 0;
+		else if (ret >= 0)
+			ret = -EIO;
+		break;
+
+	case PTRACE_WRITETEXT:
+	case PTRACE_WRITEDATA:
+		ret = ptrace_writedata(child, (char __user *) addr2,
+				       addr, data);
+		if (ret == data)
+			ret = 0;
+		else if (ret >= 0)
+			ret = -EIO;
+		break;
+
+	default:
+		if (request == PTRACE_SPARC_DETACH)
+			request = PTRACE_DETACH;
+		ret = ptrace_request(child, request, addr, data);
+		break;
+	}
+
+	return ret;
+}
+
+asmlinkage int syscall_trace_enter(struct pt_regs *regs)
+{
+	int ret = 0;
+
+	/* do the secure computing check first */
+	secure_computing(regs->u_regs[UREG_G1]);
+
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
+		ret = tracehook_report_syscall_entry(regs);
+
+	if (unlikely(current->audit_context) && !ret)
+		audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
+				     AUDIT_ARCH_SPARC :
+				     AUDIT_ARCH_SPARC64),
+				    regs->u_regs[UREG_G1],
+				    regs->u_regs[UREG_I0],
+				    regs->u_regs[UREG_I1],
+				    regs->u_regs[UREG_I2],
+				    regs->u_regs[UREG_I3]);
+
+	return ret;
+}
+
+asmlinkage void syscall_trace_leave(struct pt_regs *regs)
+{
+	if (unlikely(current->audit_context)) {
+		unsigned long tstate = regs->tstate;
+		int result = AUDITSC_SUCCESS;
+
+		if (unlikely(tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
+			result = AUDITSC_FAILURE;
+
+		audit_syscall_exit(result, regs->u_regs[UREG_I0]);
+	}
+
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
+		tracehook_report_syscall_exit(regs, 0);
+}
diff --git a/arch/sparc/kernel/reboot.c b/arch/sparc/kernel/reboot.c
new file mode 100644
index 000000000000..ef89d3d69748
--- /dev/null
+++ b/arch/sparc/kernel/reboot.c
@@ -0,0 +1,53 @@
+/* reboot.c: reboot/shutdown/halt/poweroff handling
+ *
+ * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+
+#include <asm/system.h>
+#include <asm/oplib.h>
+#include <asm/prom.h>
+
+/* sysctl - toggle power-off restriction for serial console
+ * systems in machine_power_off()
+ */
+int scons_pwroff = 1;
+
+/* This isn't actually used, it exists merely to satisfy the
+ * reference in kernel/sys.c
+ */
+void (*pm_power_off)(void) = machine_power_off;
+EXPORT_SYMBOL(pm_power_off);
+
+void machine_power_off(void)
+{
+	if (strcmp(of_console_device->type, "serial") || scons_pwroff)
+		prom_halt_power_off();
+
+	prom_halt();
+}
+
+void machine_halt(void)
+{
+	prom_halt();
+	panic("Halt failed!");
+}
+
+void machine_restart(char *cmd)
+{
+	char *p;
+
+	p = strchr(reboot_command, '\n');
+	if (p)
+		*p = 0;
+	if (cmd)
+		prom_reboot(cmd);
+	if (*reboot_command)
+		prom_reboot(reboot_command);
+	prom_reboot("");
+	panic("Reboot failed!");
+}
+
diff --git a/arch/sparc/kernel/rtrap.S b/arch/sparc/kernel/rtrap_32.S
index 4da2e1f66290..4da2e1f66290 100644
--- a/arch/sparc/kernel/rtrap.S
+++ b/arch/sparc/kernel/rtrap_32.S
diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
new file mode 100644
index 000000000000..fd3cee4d117c
--- /dev/null
+++ b/arch/sparc/kernel/rtrap_64.S
@@ -0,0 +1,450 @@
+/*
+ * rtrap.S: Preparing for return from trap on Sparc V9.
+ *
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+
+#include <asm/asi.h>
+#include <asm/pstate.h>
+#include <asm/ptrace.h>
+#include <asm/spitfire.h>
+#include <asm/head.h>
+#include <asm/visasm.h>
+#include <asm/processor.h>
+
+#define		RTRAP_PSTATE		(PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE)
+#define		RTRAP_PSTATE_IRQOFF	(PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV)
+#define		RTRAP_PSTATE_AG_IRQOFF	(PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG)
+
+		.text
+		.align			32
+__handle_softirq:
+		call			do_softirq
+		 nop
+		ba,a,pt			%xcc, __handle_softirq_continue
+		 nop
+__handle_preemption:
+		call			schedule
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		ba,pt			%xcc, __handle_preemption_continue
+		 wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+
+__handle_user_windows:
+		call			fault_in_user_windows
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		/* Redo sched+sig checks */
+		ldx			[%g6 + TI_FLAGS], %l0
+		andcc			%l0, _TIF_NEED_RESCHED, %g0
+
+		be,pt			%xcc, 1f
+		 nop
+		call			schedule
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		ldx			[%g6 + TI_FLAGS], %l0
+
+1:		andcc			%l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
+		be,pt			%xcc, __handle_user_windows_continue
+		 nop
+		mov			%l5, %o1
+		add			%sp, PTREGS_OFF, %o0
+		mov			%l0, %o2
+
+		call			do_notify_resume
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		/* Signal delivery can modify pt_regs tstate, so we must
+		 * reload it.
+		 */
+		ldx			[%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
+		sethi			%hi(0xf << 20), %l4
+		and			%l1, %l4, %l4
+		ba,pt			%xcc, __handle_user_windows_continue
+
+		 andn			%l1, %l4, %l1
+__handle_perfctrs:
+		call			update_perfctrs
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		ldub			[%g6 + TI_WSAVED], %o2
+		brz,pt			%o2, 1f
+		 nop
+		/* Redo userwin+sched+sig checks */
+		call			fault_in_user_windows
+
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		ldx			[%g6 + TI_FLAGS], %l0
+		andcc			%l0, _TIF_NEED_RESCHED, %g0
+		be,pt			%xcc, 1f
+
+		 nop
+		call			schedule
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		ldx			[%g6 + TI_FLAGS], %l0
+1:		andcc			%l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
+
+		be,pt			%xcc, __handle_perfctrs_continue
+		 sethi			%hi(TSTATE_PEF), %o0
+		mov			%l5, %o1
+		add			%sp, PTREGS_OFF, %o0
+		mov			%l0, %o2
+		call			do_notify_resume
+
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		/* Signal delivery can modify pt_regs tstate, so we must
+		 * reload it.
+		 */
+		ldx			[%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
+		sethi			%hi(0xf << 20), %l4
+		and			%l1, %l4, %l4
+		andn			%l1, %l4, %l1
+		ba,pt			%xcc, __handle_perfctrs_continue
+
+		 sethi			%hi(TSTATE_PEF), %o0
+__handle_userfpu:
+		rd			%fprs, %l5
+		andcc			%l5, FPRS_FEF, %g0
+		sethi			%hi(TSTATE_PEF), %o0
+		be,a,pn			%icc, __handle_userfpu_continue
+		 andn			%l1, %o0, %l1
+		ba,a,pt			%xcc, __handle_userfpu_continue
+
+__handle_signal:
+		mov			%l5, %o1
+		add			%sp, PTREGS_OFF, %o0
+		mov			%l0, %o2
+		call			do_notify_resume
+		 wrpr			%g0, RTRAP_PSTATE, %pstate
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+
+		/* Signal delivery can modify pt_regs tstate, so we must
+		 * reload it.
+		 */
+		ldx			[%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
+		sethi			%hi(0xf << 20), %l4
+		and			%l1, %l4, %l4
+		ba,pt			%xcc, __handle_signal_continue
+		 andn			%l1, %l4, %l1
+
+		/* When returning from a NMI (%pil==15) interrupt we want to
+		 * avoid running softirqs, doing IRQ tracing, preempting, etc.
+		 */
+		.globl			rtrap_nmi
+rtrap_nmi:	ldx			[%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
+		sethi			%hi(0xf << 20), %l4
+		and			%l1, %l4, %l4
+		andn			%l1, %l4, %l1
+		srl			%l4, 20, %l4
+		ba,pt			%xcc, rtrap_no_irq_enable
+		 wrpr			%l4, %pil
+
+		.align			64
+		.globl			rtrap_irq, rtrap, irqsz_patchme, rtrap_xcall
+rtrap_irq:
+rtrap:
+#ifndef CONFIG_SMP
+		sethi			%hi(per_cpu____cpu_data), %l0
+		lduw			[%l0 + %lo(per_cpu____cpu_data)], %l1
+#else
+		sethi			%hi(per_cpu____cpu_data), %l0
+		or			%l0, %lo(per_cpu____cpu_data), %l0
+		lduw			[%l0 + %g5], %l1
+#endif
+		cmp			%l1, 0
+
+		/* mm/ultra.S:xcall_report_regs KNOWS about this load. */
+		bne,pn			%icc, __handle_softirq
+		 ldx			[%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
+__handle_softirq_continue:
+rtrap_xcall:
+		sethi			%hi(0xf << 20), %l4
+		and			%l1, %l4, %l4
+		andn			%l1, %l4, %l1
+		srl			%l4, 20, %l4
+#ifdef CONFIG_TRACE_IRQFLAGS
+		brnz,pn			%l4, rtrap_no_irq_enable
+		 nop
+		call			trace_hardirqs_on
+		 nop
+		wrpr			%l4, %pil
+#endif
+rtrap_no_irq_enable:
+		andcc			%l1, TSTATE_PRIV, %l3
+		bne,pn			%icc, to_kernel
+		 nop
+
+		/* We must hold IRQs off and atomically test schedule+signal
+		 * state, then hold them off all the way back to userspace.
+		 * If we are returning to kernel, none of this matters.  Note
+		 * that we are disabling interrupts via PSTATE_IE, not using
+		 * %pil.
+		 *
+		 * If we do not do this, there is a window where we would do
+		 * the tests, later the signal/resched event arrives but we do
+		 * not process it since we are still in kernel mode.  It would
+		 * take until the next local IRQ before the signal/resched
+		 * event would be handled.
+		 *
+		 * This also means that if we have to deal with performance
+		 * counters or user windows, we have to redo all of these
+		 * sched+signal checks with IRQs disabled.
+		 */
+to_user:	wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		wrpr			0, %pil
+__handle_preemption_continue:
+		ldx			[%g6 + TI_FLAGS], %l0
+		sethi			%hi(_TIF_USER_WORK_MASK), %o0
+		or			%o0, %lo(_TIF_USER_WORK_MASK), %o0
+		andcc			%l0, %o0, %g0
+		sethi			%hi(TSTATE_PEF), %o0
+		be,pt			%xcc, user_nowork
+		 andcc			%l1, %o0, %g0
+		andcc			%l0, _TIF_NEED_RESCHED, %g0
+		bne,pn			%xcc, __handle_preemption
+		 andcc			%l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
+		bne,pn			%xcc, __handle_signal
+__handle_signal_continue:
+		 ldub			[%g6 + TI_WSAVED], %o2
+		brnz,pn			%o2, __handle_user_windows
+		 nop
+__handle_user_windows_continue:
+		ldx			[%g6 + TI_FLAGS], %l5
+		andcc			%l5, _TIF_PERFCTR, %g0
+		sethi			%hi(TSTATE_PEF), %o0
+		bne,pn			%xcc, __handle_perfctrs
+__handle_perfctrs_continue:
+		 andcc			%l1, %o0, %g0
+
+		/* This fpdepth clear is necessary for non-syscall rtraps only */
+user_nowork:
+		bne,pn			%xcc, __handle_userfpu
+		 stb			%g0, [%g6 + TI_FPDEPTH]
+__handle_userfpu_continue:
+
+rt_continue:	ldx			[%sp + PTREGS_OFF + PT_V9_G1], %g1
+		ldx			[%sp + PTREGS_OFF + PT_V9_G2], %g2
+
+		ldx			[%sp + PTREGS_OFF + PT_V9_G3], %g3
+		ldx			[%sp + PTREGS_OFF + PT_V9_G4], %g4
+		ldx			[%sp + PTREGS_OFF + PT_V9_G5], %g5
+		brz,pt			%l3, 1f
+		mov			%g6, %l2
+
+		/* Must do this before thread reg is clobbered below.  */
+		LOAD_PER_CPU_BASE(%g5, %g6, %i0, %i1, %i2)
+1:
+		ldx			[%sp + PTREGS_OFF + PT_V9_G6], %g6
+		ldx			[%sp + PTREGS_OFF + PT_V9_G7], %g7
+
+		/* Normal globals are restored, go to trap globals.  */
+661:		wrpr			%g0, RTRAP_PSTATE_AG_IRQOFF, %pstate
+		nop
+		.section		.sun4v_2insn_patch, "ax"
+		.word			661b
+		wrpr			%g0, RTRAP_PSTATE_IRQOFF, %pstate
+		SET_GL(1)
+		.previous
+
+		mov			%l2, %g6
+
+		ldx			[%sp + PTREGS_OFF + PT_V9_I0], %i0
+		ldx			[%sp + PTREGS_OFF + PT_V9_I1], %i1
+
+		ldx			[%sp + PTREGS_OFF + PT_V9_I2], %i2
+		ldx			[%sp + PTREGS_OFF + PT_V9_I3], %i3
+		ldx			[%sp + PTREGS_OFF + PT_V9_I4], %i4
+		ldx			[%sp + PTREGS_OFF + PT_V9_I5], %i5
+		ldx			[%sp + PTREGS_OFF + PT_V9_I6], %i6
+		ldx			[%sp + PTREGS_OFF + PT_V9_I7], %i7
+		ldx			[%sp + PTREGS_OFF + PT_V9_TPC], %l2
+		ldx			[%sp + PTREGS_OFF + PT_V9_TNPC], %o2
+
+		ld			[%sp + PTREGS_OFF + PT_V9_Y], %o3
+		wr			%o3, %g0, %y
+		wrpr			%l4, 0x0, %pil
+		wrpr			%g0, 0x1, %tl
+		andn			%l1, TSTATE_SYSCALL, %l1
+		wrpr			%l1, %g0, %tstate
+		wrpr			%l2, %g0, %tpc
+		wrpr			%o2, %g0, %tnpc
+
+		brnz,pn			%l3, kern_rtt
+		 mov			PRIMARY_CONTEXT, %l7
+
+661:		ldxa			[%l7 + %l7] ASI_DMMU, %l0
+		.section		.sun4v_1insn_patch, "ax"
+		.word			661b
+		ldxa			[%l7 + %l7] ASI_MMU, %l0
+		.previous
+
+		sethi			%hi(sparc64_kern_pri_nuc_bits), %l1
+		ldx			[%l1 + %lo(sparc64_kern_pri_nuc_bits)], %l1
+		or			%l0, %l1, %l0
+
+661:		stxa			%l0, [%l7] ASI_DMMU
+		.section		.sun4v_1insn_patch, "ax"
+		.word			661b
+		stxa			%l0, [%l7] ASI_MMU
+		.previous
+
+		sethi			%hi(KERNBASE), %l7
+		flush			%l7
+		rdpr			%wstate, %l1
+		rdpr			%otherwin, %l2
+		srl			%l1, 3, %l1
+
+		wrpr			%l2, %g0, %canrestore
+		wrpr			%l1, %g0, %wstate
+		brnz,pt			%l2, user_rtt_restore
+		 wrpr			%g0, %g0, %otherwin
+
+		ldx			[%g6 + TI_FLAGS], %g3
+		wr			%g0, ASI_AIUP, %asi
+		rdpr			%cwp, %g1
+		andcc			%g3, _TIF_32BIT, %g0
+		sub			%g1, 1, %g1
+		bne,pt			%xcc, user_rtt_fill_32bit
+		 wrpr			%g1, %cwp
+		ba,a,pt			%xcc, user_rtt_fill_64bit
+
+user_rtt_fill_fixup:
+		rdpr	%cwp, %g1
+		add	%g1, 1, %g1
+		wrpr	%g1, 0x0, %cwp
+
+		rdpr	%wstate, %g2
+		sll	%g2, 3, %g2
+		wrpr	%g2, 0x0, %wstate
+
+		/* We know %canrestore and %otherwin are both zero.  */
+
+		sethi	%hi(sparc64_kern_pri_context), %g2
+		ldx	[%g2 + %lo(sparc64_kern_pri_context)], %g2
+		mov	PRIMARY_CONTEXT, %g1
+
+661:		stxa	%g2, [%g1] ASI_DMMU
+		.section .sun4v_1insn_patch, "ax"
+		.word	661b
+		stxa	%g2, [%g1] ASI_MMU
+		.previous
+
+		sethi	%hi(KERNBASE), %g1
+		flush	%g1
+
+		or	%g4, FAULT_CODE_WINFIXUP, %g4
+		stb	%g4, [%g6 + TI_FAULT_CODE]
+		stx	%g5, [%g6 + TI_FAULT_ADDR]
+
+		mov	%g6, %l1
+		wrpr	%g0, 0x0, %tl
+
+661:		nop
+		.section		.sun4v_1insn_patch, "ax"
+		.word			661b
+		SET_GL(0)
+		.previous
+
+		wrpr	%g0, RTRAP_PSTATE, %pstate
+
+		mov	%l1, %g6
+		ldx	[%g6 + TI_TASK], %g4
+		LOAD_PER_CPU_BASE(%g5, %g6, %g1, %g2, %g3)
+		call	do_sparc64_fault
+		 add	%sp, PTREGS_OFF, %o0
+		ba,pt	%xcc, rtrap
+		 nop
+
+user_rtt_pre_restore:
+		add			%g1, 1, %g1
+		wrpr			%g1, 0x0, %cwp
+
+user_rtt_restore:
+		restore
+		rdpr			%canrestore, %g1
+		wrpr			%g1, 0x0, %cleanwin
+		retry
+		nop
+
+kern_rtt:	rdpr			%canrestore, %g1
+		brz,pn			%g1, kern_rtt_fill
+		 nop
+kern_rtt_restore:
+		stw			%g0, [%sp + PTREGS_OFF + PT_V9_MAGIC]
+		restore
+		retry
+
+to_kernel:
+#ifdef CONFIG_PREEMPT
+		ldsw			[%g6 + TI_PRE_COUNT], %l5
+		brnz			%l5, kern_fpucheck
+		 ldx			[%g6 + TI_FLAGS], %l5
+		andcc			%l5, _TIF_NEED_RESCHED, %g0
+		be,pt			%xcc, kern_fpucheck
+		 nop
+		cmp			%l4, 0
+		bne,pn			%xcc, kern_fpucheck
+		 sethi			%hi(PREEMPT_ACTIVE), %l6
+		stw			%l6, [%g6 + TI_PRE_COUNT]
+		call			schedule
+		 nop
+		ba,pt			%xcc, rtrap
+		 stw			%g0, [%g6 + TI_PRE_COUNT]
+#endif
+kern_fpucheck:	ldub			[%g6 + TI_FPDEPTH], %l5
+		brz,pt			%l5, rt_continue
+		 srl			%l5, 1, %o0
+		add			%g6, TI_FPSAVED, %l6
+		ldub			[%l6 + %o0], %l2
+		sub			%l5, 2, %l5
+
+		add			%g6, TI_GSR, %o1
+		andcc			%l2, (FPRS_FEF|FPRS_DU), %g0
+		be,pt			%icc, 2f
+		 and			%l2, FPRS_DL, %l6
+		andcc			%l2, FPRS_FEF, %g0
+		be,pn			%icc, 5f
+		 sll			%o0, 3, %o5
+		rd			%fprs, %g1
+
+		wr			%g1, FPRS_FEF, %fprs
+		ldx			[%o1 + %o5], %g1
+		add			%g6, TI_XFSR, %o1
+		sll			%o0, 8, %o2
+		add			%g6, TI_FPREGS, %o3
+		brz,pn			%l6, 1f
+		 add			%g6, TI_FPREGS+0x40, %o4
+
+		membar			#Sync
+		ldda			[%o3 + %o2] ASI_BLK_P, %f0
+		ldda			[%o4 + %o2] ASI_BLK_P, %f16
+		membar			#Sync
+1:		andcc			%l2, FPRS_DU, %g0
+		be,pn			%icc, 1f
+		 wr			%g1, 0, %gsr
+		add			%o2, 0x80, %o2
+		membar			#Sync
+		ldda			[%o3 + %o2] ASI_BLK_P, %f32
+		ldda			[%o4 + %o2] ASI_BLK_P, %f48
+1:		membar			#Sync
+		ldx			[%o1 + %o5], %fsr
+2:		stb			%l5, [%g6 + TI_FPDEPTH]
+		ba,pt			%xcc, rt_continue
+		 nop
+5:		wr			%g0, FPRS_FEF, %fprs
+		sll			%o0, 8, %o2
+
+		add			%g6, TI_FPREGS+0x80, %o3
+		add			%g6, TI_FPREGS+0xc0, %o4
+		membar			#Sync
+		ldda			[%o3 + %o2] ASI_BLK_P, %f32
+		ldda			[%o4 + %o2] ASI_BLK_P, %f48
+		membar			#Sync
+		wr			%g0, FPRS_DU, %fprs
+		ba,pt			%xcc, rt_continue
+		 stb			%l5, [%g6 + TI_FPDEPTH]
diff --git a/arch/sparc/kernel/sbus.c b/arch/sparc/kernel/sbus.c
new file mode 100644
index 000000000000..2ead310066d1
--- /dev/null
+++ b/arch/sparc/kernel/sbus.c
@@ -0,0 +1,674 @@
+/*
+ * sbus.c: UltraSparc SBUS controller support.
+ *
+ * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include <asm/page.h>
+#include <asm/io.h>
+#include <asm/upa.h>
+#include <asm/cache.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+#include <asm/prom.h>
+#include <asm/oplib.h>
+#include <asm/starfire.h>
+
+#include "iommu_common.h"
+
+#define MAP_BASE	((u32)0xc0000000)
+
+/* Offsets from iommu_regs */
+#define SYSIO_IOMMUREG_BASE	0x2400UL
+#define IOMMU_CONTROL	(0x2400UL - 0x2400UL)	/* IOMMU control register */
+#define IOMMU_TSBBASE	(0x2408UL - 0x2400UL)	/* TSB base address register */
+#define IOMMU_FLUSH	(0x2410UL - 0x2400UL)	/* IOMMU flush register */
+#define IOMMU_VADIAG	(0x4400UL - 0x2400UL)	/* SBUS virtual address diagnostic */
+#define IOMMU_TAGCMP	(0x4408UL - 0x2400UL)	/* TLB tag compare diagnostics */
+#define IOMMU_LRUDIAG	(0x4500UL - 0x2400UL)	/* IOMMU LRU queue diagnostics */
+#define IOMMU_TAGDIAG	(0x4580UL - 0x2400UL)	/* TLB tag diagnostics */
+#define IOMMU_DRAMDIAG	(0x4600UL - 0x2400UL)	/* TLB data RAM diagnostics */
+
+#define IOMMU_DRAM_VALID	(1UL << 30UL)
+
+/* Offsets from strbuf_regs */
+#define SYSIO_STRBUFREG_BASE	0x2800UL
+#define STRBUF_CONTROL	(0x2800UL - 0x2800UL)	/* Control */
+#define STRBUF_PFLUSH	(0x2808UL - 0x2800UL)	/* Page flush/invalidate */
+#define STRBUF_FSYNC	(0x2810UL - 0x2800UL)	/* Flush synchronization */
+#define STRBUF_DRAMDIAG	(0x5000UL - 0x2800UL)	/* data RAM diagnostic */
+#define STRBUF_ERRDIAG	(0x5400UL - 0x2800UL)	/* error status diagnostics */
+#define STRBUF_PTAGDIAG	(0x5800UL - 0x2800UL)	/* Page tag diagnostics */
+#define STRBUF_LTAGDIAG	(0x5900UL - 0x2800UL)	/* Line tag diagnostics */
+
+#define STRBUF_TAG_VALID	0x02UL
+
+/* Enable 64-bit DVMA mode for the given device. */
+void sbus_set_sbus64(struct device *dev, int bursts)
+{
+	struct iommu *iommu = dev->archdata.iommu;
+	struct of_device *op = to_of_device(dev);
+	const struct linux_prom_registers *regs;
+	unsigned long cfg_reg;
+	int slot;
+	u64 val;
+
+	regs = of_get_property(op->node, "reg", NULL);
+	if (!regs) {
+		printk(KERN_ERR "sbus_set_sbus64: Cannot find regs for %s\n",
+		       op->node->full_name);
+		return;
+	}
+	slot = regs->which_io;
+
+	cfg_reg = iommu->write_complete_reg;
+	switch (slot) {
+	case 0:
+		cfg_reg += 0x20UL;
+		break;
+	case 1:
+		cfg_reg += 0x28UL;
+		break;
+	case 2:
+		cfg_reg += 0x30UL;
+		break;
+	case 3:
+		cfg_reg += 0x38UL;
+		break;
+	case 13:
+		cfg_reg += 0x40UL;
+		break;
+	case 14:
+		cfg_reg += 0x48UL;
+		break;
+	case 15:
+		cfg_reg += 0x50UL;
+		break;
+
+	default:
+		return;
+	};
+
+	val = upa_readq(cfg_reg);
+	if (val & (1UL << 14UL)) {
+		/* Extended transfer mode already enabled. */
+		return;
+	}
+
+	val |= (1UL << 14UL);
+
+	if (bursts & DMA_BURST8)
+		val |= (1UL << 1UL);
+	if (bursts & DMA_BURST16)
+		val |= (1UL << 2UL);
+	if (bursts & DMA_BURST32)
+		val |= (1UL << 3UL);
+	if (bursts & DMA_BURST64)
+		val |= (1UL << 4UL);
+	upa_writeq(val, cfg_reg);
+}
+
+/* INO number to IMAP register offset for SYSIO external IRQ's.
+ * This should conform to both Sunfire/Wildfire server and Fusion
+ * desktop designs.
+ */
+#define SYSIO_IMAP_SLOT0	0x2c00UL
+#define SYSIO_IMAP_SLOT1	0x2c08UL
+#define SYSIO_IMAP_SLOT2	0x2c10UL
+#define SYSIO_IMAP_SLOT3	0x2c18UL
+#define SYSIO_IMAP_SCSI		0x3000UL
+#define SYSIO_IMAP_ETH		0x3008UL
+#define SYSIO_IMAP_BPP		0x3010UL
+#define SYSIO_IMAP_AUDIO	0x3018UL
+#define SYSIO_IMAP_PFAIL	0x3020UL
+#define SYSIO_IMAP_KMS		0x3028UL
+#define SYSIO_IMAP_FLPY		0x3030UL
+#define SYSIO_IMAP_SHW		0x3038UL
+#define SYSIO_IMAP_KBD		0x3040UL
+#define SYSIO_IMAP_MS		0x3048UL
+#define SYSIO_IMAP_SER		0x3050UL
+#define SYSIO_IMAP_TIM0		0x3060UL
+#define SYSIO_IMAP_TIM1		0x3068UL
+#define SYSIO_IMAP_UE		0x3070UL
+#define SYSIO_IMAP_CE		0x3078UL
+#define SYSIO_IMAP_SBERR	0x3080UL
+#define SYSIO_IMAP_PMGMT	0x3088UL
+#define SYSIO_IMAP_GFX		0x3090UL
+#define SYSIO_IMAP_EUPA		0x3098UL
+
+#define bogon     ((unsigned long) -1)
+static unsigned long sysio_irq_offsets[] = {
+	/* SBUS Slot 0 --> 3, level 1 --> 7 */
+	SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
+	SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
+	SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
+	SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
+	SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
+	SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
+	SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
+	SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
+
+	/* Onboard devices (not relevant/used on SunFire). */
+	SYSIO_IMAP_SCSI,
+	SYSIO_IMAP_ETH,
+	SYSIO_IMAP_BPP,
+	bogon,
+	SYSIO_IMAP_AUDIO,
+	SYSIO_IMAP_PFAIL,
+	bogon,
+	bogon,
+	SYSIO_IMAP_KMS,
+	SYSIO_IMAP_FLPY,
+	SYSIO_IMAP_SHW,
+	SYSIO_IMAP_KBD,
+	SYSIO_IMAP_MS,
+	SYSIO_IMAP_SER,
+	bogon,
+	bogon,
+	SYSIO_IMAP_TIM0,
+	SYSIO_IMAP_TIM1,
+	bogon,
+	bogon,
+	SYSIO_IMAP_UE,
+	SYSIO_IMAP_CE,
+	SYSIO_IMAP_SBERR,
+	SYSIO_IMAP_PMGMT,
+};
+
+#undef bogon
+
+#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
+
+/* Convert Interrupt Mapping register pointer to associated
+ * Interrupt Clear register pointer, SYSIO specific version.
+ */
+#define SYSIO_ICLR_UNUSED0	0x3400UL
+#define SYSIO_ICLR_SLOT0	0x3408UL
+#define SYSIO_ICLR_SLOT1	0x3448UL
+#define SYSIO_ICLR_SLOT2	0x3488UL
+#define SYSIO_ICLR_SLOT3	0x34c8UL
+static unsigned long sysio_imap_to_iclr(unsigned long imap)
+{
+	unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
+	return imap + diff;
+}
+
+static unsigned int sbus_build_irq(struct of_device *op, unsigned int ino)
+{
+	struct iommu *iommu = op->dev.archdata.iommu;
+	unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
+	unsigned long imap, iclr;
+	int sbus_level = 0;
+
+	imap = sysio_irq_offsets[ino];
+	if (imap == ((unsigned long)-1)) {
+		prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
+			    ino);
+		prom_halt();
+	}
+	imap += reg_base;
+
+	/* SYSIO inconsistency.  For external SLOTS, we have to select
+	 * the right ICLR register based upon the lower SBUS irq level
+	 * bits.
+	 */
+	if (ino >= 0x20) {
+		iclr = sysio_imap_to_iclr(imap);
+	} else {
+		int sbus_slot = (ino & 0x18)>>3;
+		
+		sbus_level = ino & 0x7;
+
+		switch(sbus_slot) {
+		case 0:
+			iclr = reg_base + SYSIO_ICLR_SLOT0;
+			break;
+		case 1:
+			iclr = reg_base + SYSIO_ICLR_SLOT1;
+			break;
+		case 2:
+			iclr = reg_base + SYSIO_ICLR_SLOT2;
+			break;
+		default:
+		case 3:
+			iclr = reg_base + SYSIO_ICLR_SLOT3;
+			break;
+		};
+
+		iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
+	}
+	return build_irq(sbus_level, iclr, imap);
+}
+
+/* Error interrupt handling. */
+#define SYSIO_UE_AFSR	0x0030UL
+#define SYSIO_UE_AFAR	0x0038UL
+#define  SYSIO_UEAFSR_PPIO  0x8000000000000000UL /* Primary PIO cause         */
+#define  SYSIO_UEAFSR_PDRD  0x4000000000000000UL /* Primary DVMA read cause   */
+#define  SYSIO_UEAFSR_PDWR  0x2000000000000000UL /* Primary DVMA write cause  */
+#define  SYSIO_UEAFSR_SPIO  0x1000000000000000UL /* Secondary PIO is cause    */
+#define  SYSIO_UEAFSR_SDRD  0x0800000000000000UL /* Secondary DVMA read cause */
+#define  SYSIO_UEAFSR_SDWR  0x0400000000000000UL /* Secondary DVMA write cause*/
+#define  SYSIO_UEAFSR_RESV1 0x03ff000000000000UL /* Reserved                  */
+#define  SYSIO_UEAFSR_DOFF  0x0000e00000000000UL /* Doubleword Offset         */
+#define  SYSIO_UEAFSR_SIZE  0x00001c0000000000UL /* Bad transfer size 2^SIZE  */
+#define  SYSIO_UEAFSR_MID   0x000003e000000000UL /* UPA MID causing the fault */
+#define  SYSIO_UEAFSR_RESV2 0x0000001fffffffffUL /* Reserved                  */
+static irqreturn_t sysio_ue_handler(int irq, void *dev_id)
+{
+	struct of_device *op = dev_id;
+	struct iommu *iommu = op->dev.archdata.iommu;
+	unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
+	unsigned long afsr_reg, afar_reg;
+	unsigned long afsr, afar, error_bits;
+	int reported, portid;
+
+	afsr_reg = reg_base + SYSIO_UE_AFSR;
+	afar_reg = reg_base + SYSIO_UE_AFAR;
+
+	/* Latch error status. */
+	afsr = upa_readq(afsr_reg);
+	afar = upa_readq(afar_reg);
+
+	/* Clear primary/secondary error status bits. */
+	error_bits = afsr &
+		(SYSIO_UEAFSR_PPIO | SYSIO_UEAFSR_PDRD | SYSIO_UEAFSR_PDWR |
+		 SYSIO_UEAFSR_SPIO | SYSIO_UEAFSR_SDRD | SYSIO_UEAFSR_SDWR);
+	upa_writeq(error_bits, afsr_reg);
+
+	portid = of_getintprop_default(op->node, "portid", -1);
+
+	/* Log the error. */
+	printk("SYSIO[%x]: Uncorrectable ECC Error, primary error type[%s]\n",
+	       portid,
+	       (((error_bits & SYSIO_UEAFSR_PPIO) ?
+		 "PIO" :
+		 ((error_bits & SYSIO_UEAFSR_PDRD) ?
+		  "DVMA Read" :
+		  ((error_bits & SYSIO_UEAFSR_PDWR) ?
+		   "DVMA Write" : "???")))));
+	printk("SYSIO[%x]: DOFF[%lx] SIZE[%lx] MID[%lx]\n",
+	       portid,
+	       (afsr & SYSIO_UEAFSR_DOFF) >> 45UL,
+	       (afsr & SYSIO_UEAFSR_SIZE) >> 42UL,
+	       (afsr & SYSIO_UEAFSR_MID) >> 37UL);
+	printk("SYSIO[%x]: AFAR[%016lx]\n", portid, afar);
+	printk("SYSIO[%x]: Secondary UE errors [", portid);
+	reported = 0;
+	if (afsr & SYSIO_UEAFSR_SPIO) {
+		reported++;
+		printk("(PIO)");
+	}
+	if (afsr & SYSIO_UEAFSR_SDRD) {
+		reported++;
+		printk("(DVMA Read)");
+	}
+	if (afsr & SYSIO_UEAFSR_SDWR) {
+		reported++;
+		printk("(DVMA Write)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	return IRQ_HANDLED;
+}
+
+#define SYSIO_CE_AFSR	0x0040UL
+#define SYSIO_CE_AFAR	0x0048UL
+#define  SYSIO_CEAFSR_PPIO  0x8000000000000000UL /* Primary PIO cause         */
+#define  SYSIO_CEAFSR_PDRD  0x4000000000000000UL /* Primary DVMA read cause   */
+#define  SYSIO_CEAFSR_PDWR  0x2000000000000000UL /* Primary DVMA write cause  */
+#define  SYSIO_CEAFSR_SPIO  0x1000000000000000UL /* Secondary PIO cause       */
+#define  SYSIO_CEAFSR_SDRD  0x0800000000000000UL /* Secondary DVMA read cause */
+#define  SYSIO_CEAFSR_SDWR  0x0400000000000000UL /* Secondary DVMA write cause*/
+#define  SYSIO_CEAFSR_RESV1 0x0300000000000000UL /* Reserved                  */
+#define  SYSIO_CEAFSR_ESYND 0x00ff000000000000UL /* Syndrome Bits             */
+#define  SYSIO_CEAFSR_DOFF  0x0000e00000000000UL /* Double Offset             */
+#define  SYSIO_CEAFSR_SIZE  0x00001c0000000000UL /* Bad transfer size 2^SIZE  */
+#define  SYSIO_CEAFSR_MID   0x000003e000000000UL /* UPA MID causing the fault */
+#define  SYSIO_CEAFSR_RESV2 0x0000001fffffffffUL /* Reserved                  */
+static irqreturn_t sysio_ce_handler(int irq, void *dev_id)
+{
+	struct of_device *op = dev_id;
+	struct iommu *iommu = op->dev.archdata.iommu;
+	unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
+	unsigned long afsr_reg, afar_reg;
+	unsigned long afsr, afar, error_bits;
+	int reported, portid;
+
+	afsr_reg = reg_base + SYSIO_CE_AFSR;
+	afar_reg = reg_base + SYSIO_CE_AFAR;
+
+	/* Latch error status. */
+	afsr = upa_readq(afsr_reg);
+	afar = upa_readq(afar_reg);
+
+	/* Clear primary/secondary error status bits. */
+	error_bits = afsr &
+		(SYSIO_CEAFSR_PPIO | SYSIO_CEAFSR_PDRD | SYSIO_CEAFSR_PDWR |
+		 SYSIO_CEAFSR_SPIO | SYSIO_CEAFSR_SDRD | SYSIO_CEAFSR_SDWR);
+	upa_writeq(error_bits, afsr_reg);
+
+	portid = of_getintprop_default(op->node, "portid", -1);
+
+	printk("SYSIO[%x]: Correctable ECC Error, primary error type[%s]\n",
+	       portid,
+	       (((error_bits & SYSIO_CEAFSR_PPIO) ?
+		 "PIO" :
+		 ((error_bits & SYSIO_CEAFSR_PDRD) ?
+		  "DVMA Read" :
+		  ((error_bits & SYSIO_CEAFSR_PDWR) ?
+		   "DVMA Write" : "???")))));
+
+	/* XXX Use syndrome and afar to print out module string just like
+	 * XXX UDB CE trap handler does... -DaveM
+	 */
+	printk("SYSIO[%x]: DOFF[%lx] ECC Syndrome[%lx] Size[%lx] MID[%lx]\n",
+	       portid,
+	       (afsr & SYSIO_CEAFSR_DOFF) >> 45UL,
+	       (afsr & SYSIO_CEAFSR_ESYND) >> 48UL,
+	       (afsr & SYSIO_CEAFSR_SIZE) >> 42UL,
+	       (afsr & SYSIO_CEAFSR_MID) >> 37UL);
+	printk("SYSIO[%x]: AFAR[%016lx]\n", portid, afar);
+
+	printk("SYSIO[%x]: Secondary CE errors [", portid);
+	reported = 0;
+	if (afsr & SYSIO_CEAFSR_SPIO) {
+		reported++;
+		printk("(PIO)");
+	}
+	if (afsr & SYSIO_CEAFSR_SDRD) {
+		reported++;
+		printk("(DVMA Read)");
+	}
+	if (afsr & SYSIO_CEAFSR_SDWR) {
+		reported++;
+		printk("(DVMA Write)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	return IRQ_HANDLED;
+}
+
+#define SYSIO_SBUS_AFSR		0x2010UL
+#define SYSIO_SBUS_AFAR		0x2018UL
+#define  SYSIO_SBAFSR_PLE   0x8000000000000000UL /* Primary Late PIO Error    */
+#define  SYSIO_SBAFSR_PTO   0x4000000000000000UL /* Primary SBUS Timeout      */
+#define  SYSIO_SBAFSR_PBERR 0x2000000000000000UL /* Primary SBUS Error ACK    */
+#define  SYSIO_SBAFSR_SLE   0x1000000000000000UL /* Secondary Late PIO Error  */
+#define  SYSIO_SBAFSR_STO   0x0800000000000000UL /* Secondary SBUS Timeout    */
+#define  SYSIO_SBAFSR_SBERR 0x0400000000000000UL /* Secondary SBUS Error ACK  */
+#define  SYSIO_SBAFSR_RESV1 0x03ff000000000000UL /* Reserved                  */
+#define  SYSIO_SBAFSR_RD    0x0000800000000000UL /* Primary was late PIO read */
+#define  SYSIO_SBAFSR_RESV2 0x0000600000000000UL /* Reserved                  */
+#define  SYSIO_SBAFSR_SIZE  0x00001c0000000000UL /* Size of transfer          */
+#define  SYSIO_SBAFSR_MID   0x000003e000000000UL /* MID causing the error     */
+#define  SYSIO_SBAFSR_RESV3 0x0000001fffffffffUL /* Reserved                  */
+static irqreturn_t sysio_sbus_error_handler(int irq, void *dev_id)
+{
+	struct of_device *op = dev_id;
+	struct iommu *iommu = op->dev.archdata.iommu;
+	unsigned long afsr_reg, afar_reg, reg_base;
+	unsigned long afsr, afar, error_bits;
+	int reported, portid;
+
+	reg_base = iommu->write_complete_reg - 0x2000UL;
+	afsr_reg = reg_base + SYSIO_SBUS_AFSR;
+	afar_reg = reg_base + SYSIO_SBUS_AFAR;
+
+	afsr = upa_readq(afsr_reg);
+	afar = upa_readq(afar_reg);
+
+	/* Clear primary/secondary error status bits. */
+	error_bits = afsr &
+		(SYSIO_SBAFSR_PLE | SYSIO_SBAFSR_PTO | SYSIO_SBAFSR_PBERR |
+		 SYSIO_SBAFSR_SLE | SYSIO_SBAFSR_STO | SYSIO_SBAFSR_SBERR);
+	upa_writeq(error_bits, afsr_reg);
+
+	portid = of_getintprop_default(op->node, "portid", -1);
+
+	/* Log the error. */
+	printk("SYSIO[%x]: SBUS Error, primary error type[%s] read(%d)\n",
+	       portid,
+	       (((error_bits & SYSIO_SBAFSR_PLE) ?
+		 "Late PIO Error" :
+		 ((error_bits & SYSIO_SBAFSR_PTO) ?
+		  "Time Out" :
+		  ((error_bits & SYSIO_SBAFSR_PBERR) ?
+		   "Error Ack" : "???")))),
+	       (afsr & SYSIO_SBAFSR_RD) ? 1 : 0);
+	printk("SYSIO[%x]: size[%lx] MID[%lx]\n",
+	       portid,
+	       (afsr & SYSIO_SBAFSR_SIZE) >> 42UL,
+	       (afsr & SYSIO_SBAFSR_MID) >> 37UL);
+	printk("SYSIO[%x]: AFAR[%016lx]\n", portid, afar);
+	printk("SYSIO[%x]: Secondary SBUS errors [", portid);
+	reported = 0;
+	if (afsr & SYSIO_SBAFSR_SLE) {
+		reported++;
+		printk("(Late PIO Error)");
+	}
+	if (afsr & SYSIO_SBAFSR_STO) {
+		reported++;
+		printk("(Time Out)");
+	}
+	if (afsr & SYSIO_SBAFSR_SBERR) {
+		reported++;
+		printk("(Error Ack)");
+	}
+	if (!reported)
+		printk("(none)");
+	printk("]\n");
+
+	/* XXX check iommu/strbuf for further error status XXX */
+
+	return IRQ_HANDLED;
+}
+
+#define ECC_CONTROL	0x0020UL
+#define  SYSIO_ECNTRL_ECCEN	0x8000000000000000UL /* Enable ECC Checking   */
+#define  SYSIO_ECNTRL_UEEN	0x4000000000000000UL /* Enable UE Interrupts  */
+#define  SYSIO_ECNTRL_CEEN	0x2000000000000000UL /* Enable CE Interrupts  */
+
+#define SYSIO_UE_INO		0x34
+#define SYSIO_CE_INO		0x35
+#define SYSIO_SBUSERR_INO	0x36
+
+static void __init sysio_register_error_handlers(struct of_device *op)
+{
+	struct iommu *iommu = op->dev.archdata.iommu;
+	unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
+	unsigned int irq;
+	u64 control;
+	int portid;
+
+	portid = of_getintprop_default(op->node, "portid", -1);
+
+	irq = sbus_build_irq(op, SYSIO_UE_INO);
+	if (request_irq(irq, sysio_ue_handler, 0,
+			"SYSIO_UE", op) < 0) {
+		prom_printf("SYSIO[%x]: Cannot register UE interrupt.\n",
+			    portid);
+		prom_halt();
+	}
+
+	irq = sbus_build_irq(op, SYSIO_CE_INO);
+	if (request_irq(irq, sysio_ce_handler, 0,
+			"SYSIO_CE", op) < 0) {
+		prom_printf("SYSIO[%x]: Cannot register CE interrupt.\n",
+			    portid);
+		prom_halt();
+	}
+
+	irq = sbus_build_irq(op, SYSIO_SBUSERR_INO);
+	if (request_irq(irq, sysio_sbus_error_handler, 0,
+			"SYSIO_SBERR", op) < 0) {
+		prom_printf("SYSIO[%x]: Cannot register SBUS Error interrupt.\n",
+			    portid);
+		prom_halt();
+	}
+
+	/* Now turn the error interrupts on and also enable ECC checking. */
+	upa_writeq((SYSIO_ECNTRL_ECCEN |
+		    SYSIO_ECNTRL_UEEN  |
+		    SYSIO_ECNTRL_CEEN),
+		   reg_base + ECC_CONTROL);
+
+	control = upa_readq(iommu->write_complete_reg);
+	control |= 0x100UL; /* SBUS Error Interrupt Enable */
+	upa_writeq(control, iommu->write_complete_reg);
+}
+
+/* Boot time initialization. */
+static void __init sbus_iommu_init(struct of_device *op)
+{
+	const struct linux_prom64_registers *pr;
+	struct device_node *dp = op->node;
+	struct iommu *iommu;
+	struct strbuf *strbuf;
+	unsigned long regs, reg_base;
+	int i, portid;
+	u64 control;
+
+	pr = of_get_property(dp, "reg", NULL);
+	if (!pr) {
+		prom_printf("sbus_iommu_init: Cannot map SYSIO "
+			    "control registers.\n");
+		prom_halt();
+	}
+	regs = pr->phys_addr;
+
+	iommu = kzalloc(sizeof(*iommu), GFP_ATOMIC);
+	if (!iommu)
+		goto fatal_memory_error;
+	strbuf = kzalloc(sizeof(*strbuf), GFP_ATOMIC);
+	if (!strbuf)
+		goto fatal_memory_error;
+
+	op->dev.archdata.iommu = iommu;
+	op->dev.archdata.stc = strbuf;
+	op->dev.archdata.numa_node = -1;
+
+	reg_base = regs + SYSIO_IOMMUREG_BASE;
+	iommu->iommu_control = reg_base + IOMMU_CONTROL;
+	iommu->iommu_tsbbase = reg_base + IOMMU_TSBBASE;
+	iommu->iommu_flush = reg_base + IOMMU_FLUSH;
+	iommu->iommu_tags = iommu->iommu_control +
+		(IOMMU_TAGDIAG - IOMMU_CONTROL);
+
+	reg_base = regs + SYSIO_STRBUFREG_BASE;
+	strbuf->strbuf_control = reg_base + STRBUF_CONTROL;
+	strbuf->strbuf_pflush = reg_base + STRBUF_PFLUSH;
+	strbuf->strbuf_fsync = reg_base + STRBUF_FSYNC;
+
+	strbuf->strbuf_enabled = 1;
+
+	strbuf->strbuf_flushflag = (volatile unsigned long *)
+		((((unsigned long)&strbuf->__flushflag_buf[0])
+		  + 63UL)
+		 & ~63UL);
+	strbuf->strbuf_flushflag_pa = (unsigned long)
+		__pa(strbuf->strbuf_flushflag);
+
+	/* The SYSIO SBUS control register is used for dummy reads
+	 * in order to ensure write completion.
+	 */
+	iommu->write_complete_reg = regs + 0x2000UL;
+
+	portid = of_getintprop_default(op->node, "portid", -1);
+	printk(KERN_INFO "SYSIO: UPA portID %x, at %016lx\n",
+	       portid, regs);
+
+	/* Setup for TSB_SIZE=7, TBW_SIZE=0, MMU_DE=1, MMU_EN=1 */
+	if (iommu_table_init(iommu, IO_TSB_SIZE, MAP_BASE, 0xffffffff, -1))
+		goto fatal_memory_error;
+
+	control = upa_readq(iommu->iommu_control);
+	control = ((7UL << 16UL)	|
+		   (0UL << 2UL)		|
+		   (1UL << 1UL)		|
+		   (1UL << 0UL));
+	upa_writeq(control, iommu->iommu_control);
+
+	/* Clean out any cruft in the IOMMU using
+	 * diagnostic accesses.
+	 */
+	for (i = 0; i < 16; i++) {
+		unsigned long dram, tag;
+
+		dram = iommu->iommu_control + (IOMMU_DRAMDIAG - IOMMU_CONTROL);
+		tag = iommu->iommu_control + (IOMMU_TAGDIAG - IOMMU_CONTROL);
+
+		dram += (unsigned long)i * 8UL;
+		tag += (unsigned long)i * 8UL;
+		upa_writeq(0, dram);
+		upa_writeq(0, tag);
+	}
+	upa_readq(iommu->write_complete_reg);
+
+	/* Give the TSB to SYSIO. */
+	upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
+
+	/* Setup streaming buffer, DE=1 SB_EN=1 */
+	control = (1UL << 1UL) | (1UL << 0UL);
+	upa_writeq(control, strbuf->strbuf_control);
+
+	/* Clear out the tags using diagnostics. */
+	for (i = 0; i < 16; i++) {
+		unsigned long ptag, ltag;
+
+		ptag = strbuf->strbuf_control +
+			(STRBUF_PTAGDIAG - STRBUF_CONTROL);
+		ltag = strbuf->strbuf_control +
+			(STRBUF_LTAGDIAG - STRBUF_CONTROL);
+		ptag += (unsigned long)i * 8UL;
+		ltag += (unsigned long)i * 8UL;
+
+		upa_writeq(0UL, ptag);
+		upa_writeq(0UL, ltag);
+	}
+
+	/* Enable DVMA arbitration for all devices/slots. */
+	control = upa_readq(iommu->write_complete_reg);
+	control |= 0x3fUL;
+	upa_writeq(control, iommu->write_complete_reg);
+
+	/* Now some Xfire specific grot... */
+	if (this_is_starfire)
+		starfire_hookup(portid);
+
+	sysio_register_error_handlers(op);
+	return;
+
+fatal_memory_error:
+	prom_printf("sbus_iommu_init: Fatal memory allocation error.\n");
+}
+
+static int __init sbus_init(void)
+{
+	struct device_node *dp;
+
+	for_each_node_by_name(dp, "sbus") {
+		struct of_device *op = of_find_device_by_node(dp);
+
+		sbus_iommu_init(op);
+		of_propagate_archdata(op);
+	}
+
+	return 0;
+}
+
+subsys_initcall(sbus_init);
diff --git a/arch/sparc/kernel/setup.c b/arch/sparc/kernel/setup_32.c
index 24fe3078bd4b..c96c65d1b58b 100644
--- a/arch/sparc/kernel/setup.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -46,6 +46,8 @@
 #include <asm/cpudata.h>
 #include <asm/setup.h>
 
+#include "kernel.h"
+
 struct screen_info screen_info = {
 	0, 0,			/* orig-x, orig-y */
 	0,			/* unused */
@@ -308,9 +310,6 @@ void __init setup_arch(char **cmdline_p)
 	smp_setup_cpu_possible_map();
 }
 
-extern char *sparc_cpu_type;
-extern char *sparc_fpu_type;
-
 static int ncpus_probed;
 
 static int show_cpuinfo(struct seq_file *m, void *__unused)
@@ -328,8 +327,8 @@ static int show_cpuinfo(struct seq_file *m, void *__unused)
 		   "CPU0ClkTck\t: %ld\n"
 #endif
 		   ,
-		   sparc_cpu_type ? sparc_cpu_type : "undetermined",
-		   sparc_fpu_type ? sparc_fpu_type : "undetermined",
+		   sparc_cpu_type,
+		   sparc_fpu_type ,
 		   romvec->pv_romvers,
 		   prom_rev,
 		   romvec->pv_printrev >> 16,
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
new file mode 100644
index 000000000000..555db7452ebe
--- /dev/null
+++ b/arch/sparc/kernel/setup_64.c
@@ -0,0 +1,429 @@
+/*
+ *  linux/arch/sparc64/kernel/setup.c
+ *
+ *  Copyright (C) 1995,1996  David S. Miller (davem@caip.rutgers.edu)
+ *  Copyright (C) 1997       Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <asm/smp.h>
+#include <linux/user.h>
+#include <linux/screen_info.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/seq_file.h>
+#include <linux/syscalls.h>
+#include <linux/kdev_t.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/inet.h>
+#include <linux/console.h>
+#include <linux/root_dev.h>
+#include <linux/interrupt.h>
+#include <linux/cpu.h>
+#include <linux/initrd.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/oplib.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/idprom.h>
+#include <asm/head.h>
+#include <asm/starfire.h>
+#include <asm/mmu_context.h>
+#include <asm/timer.h>
+#include <asm/sections.h>
+#include <asm/setup.h>
+#include <asm/mmu.h>
+#include <asm/ns87303.h>
+
+#ifdef CONFIG_IP_PNP
+#include <net/ipconfig.h>
+#endif
+
+#include "entry.h"
+#include "kernel.h"
+
+/* Used to synchronize accesses to NatSemi SUPER I/O chip configure
+ * operations in asm/ns87303.h
+ */
+DEFINE_SPINLOCK(ns87303_lock);
+
+struct screen_info screen_info = {
+	0, 0,			/* orig-x, orig-y */
+	0,			/* unused */
+	0,			/* orig-video-page */
+	0,			/* orig-video-mode */
+	128,			/* orig-video-cols */
+	0, 0, 0,		/* unused, ega_bx, unused */
+	54,			/* orig-video-lines */
+	0,                      /* orig-video-isVGA */
+	16                      /* orig-video-points */
+};
+
+static void
+prom_console_write(struct console *con, const char *s, unsigned n)
+{
+	prom_write(s, n);
+}
+
+/* Exported for mm/init.c:paging_init. */
+unsigned long cmdline_memory_size = 0;
+
+static struct console prom_early_console = {
+	.name =		"earlyprom",
+	.write =	prom_console_write,
+	.flags =	CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
+	.index =	-1,
+};
+
+/* 
+ * Process kernel command line switches that are specific to the
+ * SPARC or that require special low-level processing.
+ */
+static void __init process_switch(char c)
+{
+	switch (c) {
+	case 'd':
+	case 's':
+		break;
+	case 'h':
+		prom_printf("boot_flags_init: Halt!\n");
+		prom_halt();
+		break;
+	case 'p':
+		/* Just ignore, this behavior is now the default.  */
+		break;
+	case 'P':
+		/* Force UltraSPARC-III P-Cache on. */
+		if (tlb_type != cheetah) {
+			printk("BOOT: Ignoring P-Cache force option.\n");
+			break;
+		}
+		cheetah_pcache_forced_on = 1;
+		add_taint(TAINT_MACHINE_CHECK);
+		cheetah_enable_pcache();
+		break;
+
+	default:
+		printk("Unknown boot switch (-%c)\n", c);
+		break;
+	}
+}
+
+static void __init boot_flags_init(char *commands)
+{
+	while (*commands) {
+		/* Move to the start of the next "argument". */
+		while (*commands && *commands == ' ')
+			commands++;
+
+		/* Process any command switches, otherwise skip it. */
+		if (*commands == '\0')
+			break;
+		if (*commands == '-') {
+			commands++;
+			while (*commands && *commands != ' ')
+				process_switch(*commands++);
+			continue;
+		}
+		if (!strncmp(commands, "mem=", 4)) {
+			/*
+			 * "mem=XXX[kKmM]" overrides the PROM-reported
+			 * memory size.
+			 */
+			cmdline_memory_size = simple_strtoul(commands + 4,
+							     &commands, 0);
+			if (*commands == 'K' || *commands == 'k') {
+				cmdline_memory_size <<= 10;
+				commands++;
+			} else if (*commands=='M' || *commands=='m') {
+				cmdline_memory_size <<= 20;
+				commands++;
+			}
+		}
+		while (*commands && *commands != ' ')
+			commands++;
+	}
+}
+
+extern unsigned short root_flags;
+extern unsigned short root_dev;
+extern unsigned short ram_flags;
+#define RAMDISK_IMAGE_START_MASK	0x07FF
+#define RAMDISK_PROMPT_FLAG		0x8000
+#define RAMDISK_LOAD_FLAG		0x4000
+
+extern int root_mountflags;
+
+char reboot_command[COMMAND_LINE_SIZE];
+
+static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
+
+void __init per_cpu_patch(void)
+{
+	struct cpuid_patch_entry *p;
+	unsigned long ver;
+	int is_jbus;
+
+	if (tlb_type == spitfire && !this_is_starfire)
+		return;
+
+	is_jbus = 0;
+	if (tlb_type != hypervisor) {
+		__asm__ ("rdpr %%ver, %0" : "=r" (ver));
+		is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
+			   (ver >> 32UL) == __SERRANO_ID);
+	}
+
+	p = &__cpuid_patch;
+	while (p < &__cpuid_patch_end) {
+		unsigned long addr = p->addr;
+		unsigned int *insns;
+
+		switch (tlb_type) {
+		case spitfire:
+			insns = &p->starfire[0];
+			break;
+		case cheetah:
+		case cheetah_plus:
+			if (is_jbus)
+				insns = &p->cheetah_jbus[0];
+			else
+				insns = &p->cheetah_safari[0];
+			break;
+		case hypervisor:
+			insns = &p->sun4v[0];
+			break;
+		default:
+			prom_printf("Unknown cpu type, halting.\n");
+			prom_halt();
+		};
+
+		*(unsigned int *) (addr +  0) = insns[0];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));
+
+		*(unsigned int *) (addr +  4) = insns[1];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  4));
+
+		*(unsigned int *) (addr +  8) = insns[2];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  8));
+
+		*(unsigned int *) (addr + 12) = insns[3];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr + 12));
+
+		p++;
+	}
+}
+
+void __init sun4v_patch(void)
+{
+	extern void sun4v_hvapi_init(void);
+	struct sun4v_1insn_patch_entry *p1;
+	struct sun4v_2insn_patch_entry *p2;
+
+	if (tlb_type != hypervisor)
+		return;
+
+	p1 = &__sun4v_1insn_patch;
+	while (p1 < &__sun4v_1insn_patch_end) {
+		unsigned long addr = p1->addr;
+
+		*(unsigned int *) (addr +  0) = p1->insn;
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));
+
+		p1++;
+	}
+
+	p2 = &__sun4v_2insn_patch;
+	while (p2 < &__sun4v_2insn_patch_end) {
+		unsigned long addr = p2->addr;
+
+		*(unsigned int *) (addr +  0) = p2->insns[0];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));
+
+		*(unsigned int *) (addr +  4) = p2->insns[1];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  4));
+
+		p2++;
+	}
+
+	sun4v_hvapi_init();
+}
+
+#ifdef CONFIG_SMP
+void __init boot_cpu_id_too_large(int cpu)
+{
+	prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
+		    cpu, NR_CPUS);
+	prom_halt();
+}
+#endif
+
+void __init setup_arch(char **cmdline_p)
+{
+	/* Initialize PROM console and command line. */
+	*cmdline_p = prom_getbootargs();
+	strcpy(boot_command_line, *cmdline_p);
+	parse_early_param();
+
+	boot_flags_init(*cmdline_p);
+	register_console(&prom_early_console);
+
+	if (tlb_type == hypervisor)
+		printk("ARCH: SUN4V\n");
+	else
+		printk("ARCH: SUN4U\n");
+
+#ifdef CONFIG_DUMMY_CONSOLE
+	conswitchp = &dummy_con;
+#elif defined(CONFIG_PROM_CONSOLE)
+	conswitchp = &prom_con;
+#endif
+
+	idprom_init();
+
+	if (!root_flags)
+		root_mountflags &= ~MS_RDONLY;
+	ROOT_DEV = old_decode_dev(root_dev);
+#ifdef CONFIG_BLK_DEV_RAM
+	rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
+	rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
+	rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);	
+#endif
+
+	task_thread_info(&init_task)->kregs = &fake_swapper_regs;
+
+#ifdef CONFIG_IP_PNP
+	if (!ic_set_manually) {
+		int chosen = prom_finddevice ("/chosen");
+		u32 cl, sv, gw;
+		
+		cl = prom_getintdefault (chosen, "client-ip", 0);
+		sv = prom_getintdefault (chosen, "server-ip", 0);
+		gw = prom_getintdefault (chosen, "gateway-ip", 0);
+		if (cl && sv) {
+			ic_myaddr = cl;
+			ic_servaddr = sv;
+			if (gw)
+				ic_gateway = gw;
+#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
+			ic_proto_enabled = 0;
+#endif
+		}
+	}
+#endif
+
+	/* Get boot processor trap_block[] setup.  */
+	init_cur_cpu_trap(current_thread_info());
+
+	paging_init();
+}
+
+/* BUFFER is PAGE_SIZE bytes long. */
+
+extern void smp_info(struct seq_file *);
+extern void smp_bogo(struct seq_file *);
+extern void mmu_info(struct seq_file *);
+
+unsigned int dcache_parity_tl1_occurred;
+unsigned int icache_parity_tl1_occurred;
+
+int ncpus_probed;
+
+static int show_cpuinfo(struct seq_file *m, void *__unused)
+{
+	seq_printf(m, 
+		   "cpu\t\t: %s\n"
+		   "fpu\t\t: %s\n"
+		   "prom\t\t: %s\n"
+		   "type\t\t: %s\n"
+		   "ncpus probed\t: %d\n"
+		   "ncpus active\t: %d\n"
+		   "D$ parity tl1\t: %u\n"
+		   "I$ parity tl1\t: %u\n"
+#ifndef CONFIG_SMP
+		   "Cpu0ClkTck\t: %016lx\n"
+#endif
+		   ,
+		   sparc_cpu_type,
+		   sparc_fpu_type,
+		   prom_version,
+		   ((tlb_type == hypervisor) ?
+		    "sun4v" :
+		    "sun4u"),
+		   ncpus_probed,
+		   num_online_cpus(),
+		   dcache_parity_tl1_occurred,
+		   icache_parity_tl1_occurred
+#ifndef CONFIG_SMP
+		   , cpu_data(0).clock_tick
+#endif
+		);
+#ifdef CONFIG_SMP
+	smp_bogo(m);
+#endif
+	mmu_info(m);
+#ifdef CONFIG_SMP
+	smp_info(m);
+#endif
+	return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+	/* The pointer we are returning is arbitrary,
+	 * it just has to be non-NULL and not IS_ERR
+	 * in the success case.
+	 */
+	return *pos == 0 ? &c_start : NULL;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	++*pos;
+	return c_start(m, pos);
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+
+const struct seq_operations cpuinfo_op = {
+	.start =c_start,
+	.next =	c_next,
+	.stop =	c_stop,
+	.show =	show_cpuinfo,
+};
+
+extern int stop_a_enabled;
+
+void sun_do_break(void)
+{
+	if (!stop_a_enabled)
+		return;
+
+	prom_printf("\n");
+	flush_user_windows();
+
+	prom_cmdline();
+}
+
+int stop_a_enabled = 1;
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c
new file mode 100644
index 000000000000..ba5b09ad6666
--- /dev/null
+++ b/arch/sparc/kernel/signal32.c
@@ -0,0 +1,899 @@
+/*  arch/sparc64/kernel/signal32.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *  Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ *  Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *  Copyright (C) 1997 Eddie C. Dost   (ecd@skynet.be)
+ *  Copyright (C) 1997,1998 Jakub Jelinek   (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/binfmts.h>
+#include <linux/compat.h>
+#include <linux/bitops.h>
+#include <linux/tracehook.h>
+
+#include <asm/uaccess.h>
+#include <asm/ptrace.h>
+#include <asm/pgtable.h>
+#include <asm/psrcompat.h>
+#include <asm/fpumacro.h>
+#include <asm/visasm.h>
+#include <asm/compat_signal.h>
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+/* This magic should be in g_upper[0] for all upper parts
+ * to be valid.
+ */
+#define SIGINFO_EXTRA_V8PLUS_MAGIC	0x130e269
+typedef struct {
+	unsigned int g_upper[8];
+	unsigned int o_upper[8];
+	unsigned int asi;
+} siginfo_extra_v8plus_t;
+
+struct signal_frame32 {
+	struct sparc_stackf32	ss;
+	__siginfo32_t		info;
+	/* __siginfo_fpu32_t * */ u32 fpu_save;
+	unsigned int		insns[2];
+	unsigned int		extramask[_COMPAT_NSIG_WORDS - 1];
+	unsigned int		extra_size; /* Should be sizeof(siginfo_extra_v8plus_t) */
+	/* Only valid if (info.si_regs.psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS */
+	siginfo_extra_v8plus_t	v8plus;
+	__siginfo_fpu_t		fpu_state;
+};
+
+typedef struct compat_siginfo{
+	int si_signo;
+	int si_errno;
+	int si_code;
+
+	union {
+		int _pad[SI_PAD_SIZE32];
+
+		/* kill() */
+		struct {
+			compat_pid_t _pid;		/* sender's pid */
+			unsigned int _uid;		/* sender's uid */
+		} _kill;
+
+		/* POSIX.1b timers */
+		struct {
+			compat_timer_t _tid;			/* timer id */
+			int _overrun;			/* overrun count */
+			compat_sigval_t _sigval;		/* same as below */
+			int _sys_private;		/* not to be passed to user */
+		} _timer;
+
+		/* POSIX.1b signals */
+		struct {
+			compat_pid_t _pid;		/* sender's pid */
+			unsigned int _uid;		/* sender's uid */
+			compat_sigval_t _sigval;
+		} _rt;
+
+		/* SIGCHLD */
+		struct {
+			compat_pid_t _pid;		/* which child */
+			unsigned int _uid;		/* sender's uid */
+			int _status;			/* exit code */
+			compat_clock_t _utime;
+			compat_clock_t _stime;
+		} _sigchld;
+
+		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
+		struct {
+			u32 _addr; /* faulting insn/memory ref. */
+			int _trapno;
+		} _sigfault;
+
+		/* SIGPOLL */
+		struct {
+			int _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
+			int _fd;
+		} _sigpoll;
+	} _sifields;
+}compat_siginfo_t;
+
+struct rt_signal_frame32 {
+	struct sparc_stackf32	ss;
+	compat_siginfo_t	info;
+	struct pt_regs32	regs;
+	compat_sigset_t		mask;
+	/* __siginfo_fpu32_t * */ u32 fpu_save;
+	unsigned int		insns[2];
+	stack_t32		stack;
+	unsigned int		extra_size; /* Should be sizeof(siginfo_extra_v8plus_t) */
+	/* Only valid if (regs.psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS */
+	siginfo_extra_v8plus_t	v8plus;
+	__siginfo_fpu_t		fpu_state;
+};
+
+/* Align macros */
+#define SF_ALIGNEDSZ  (((sizeof(struct signal_frame32) + 7) & (~7)))
+#define RT_ALIGNEDSZ  (((sizeof(struct rt_signal_frame32) + 7) & (~7)))
+
+int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
+{
+	int err;
+
+	if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
+		return -EFAULT;
+
+	/* If you change siginfo_t structure, please be sure
+	   this code is fixed accordingly.
+	   It should never copy any pad contained in the structure
+	   to avoid security leaks, but must copy the generic
+	   3 ints plus the relevant union member.
+	   This routine must convert siginfo from 64bit to 32bit as well
+	   at the same time.  */
+	err = __put_user(from->si_signo, &to->si_signo);
+	err |= __put_user(from->si_errno, &to->si_errno);
+	err |= __put_user((short)from->si_code, &to->si_code);
+	if (from->si_code < 0)
+		err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
+	else {
+		switch (from->si_code >> 16) {
+		case __SI_TIMER >> 16:
+			err |= __put_user(from->si_tid, &to->si_tid);
+			err |= __put_user(from->si_overrun, &to->si_overrun);
+			err |= __put_user(from->si_int, &to->si_int);
+			break;
+		case __SI_CHLD >> 16:
+			err |= __put_user(from->si_utime, &to->si_utime);
+			err |= __put_user(from->si_stime, &to->si_stime);
+			err |= __put_user(from->si_status, &to->si_status);
+		default:
+			err |= __put_user(from->si_pid, &to->si_pid);
+			err |= __put_user(from->si_uid, &to->si_uid);
+			break;
+		case __SI_FAULT >> 16:
+			err |= __put_user(from->si_trapno, &to->si_trapno);
+			err |= __put_user((unsigned long)from->si_addr, &to->si_addr);
+			break;
+		case __SI_POLL >> 16:
+			err |= __put_user(from->si_band, &to->si_band);
+			err |= __put_user(from->si_fd, &to->si_fd);
+			break;
+		case __SI_RT >> 16: /* This is not generated by the kernel as of now.  */
+		case __SI_MESGQ >> 16:
+			err |= __put_user(from->si_pid, &to->si_pid);
+			err |= __put_user(from->si_uid, &to->si_uid);
+			err |= __put_user(from->si_int, &to->si_int);
+			break;
+		}
+	}
+	return err;
+}
+
+/* CAUTION: This is just a very minimalist implementation for the
+ *          sake of compat_sys_rt_sigqueueinfo()
+ */
+int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
+{
+	if (!access_ok(VERIFY_WRITE, from, sizeof(compat_siginfo_t)))
+		return -EFAULT;
+
+	if (copy_from_user(to, from, 3*sizeof(int)) ||
+	    copy_from_user(to->_sifields._pad, from->_sifields._pad,
+			   SI_PAD_SIZE))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int restore_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+	unsigned long *fpregs = current_thread_info()->fpregs;
+	unsigned long fprs;
+	int err;
+	
+	err = __get_user(fprs, &fpu->si_fprs);
+	fprs_write(0);
+	regs->tstate &= ~TSTATE_PEF;
+	if (fprs & FPRS_DL)
+		err |= copy_from_user(fpregs, &fpu->si_float_regs[0], (sizeof(unsigned int) * 32));
+	if (fprs & FPRS_DU)
+		err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32], (sizeof(unsigned int) * 32));
+	err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
+	err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
+	current_thread_info()->fpsaved[0] |= fprs;
+	return err;
+}
+
+void do_sigreturn32(struct pt_regs *regs)
+{
+	struct signal_frame32 __user *sf;
+	unsigned int psr;
+	unsigned pc, npc, fpu_save;
+	sigset_t set;
+	unsigned seta[_COMPAT_NSIG_WORDS];
+	int err, i;
+	
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+	synchronize_user_stack();
+
+	regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
+	sf = (struct signal_frame32 __user *) regs->u_regs[UREG_FP];
+
+	/* 1. Make sure we are not getting garbage from the user */
+	if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
+	    (((unsigned long) sf) & 3))
+		goto segv;
+
+	get_user(pc, &sf->info.si_regs.pc);
+	__get_user(npc, &sf->info.si_regs.npc);
+
+	if ((pc | npc) & 3)
+		goto segv;
+
+	if (test_thread_flag(TIF_32BIT)) {
+		pc &= 0xffffffff;
+		npc &= 0xffffffff;
+	}
+	regs->tpc = pc;
+	regs->tnpc = npc;
+
+	/* 2. Restore the state */
+	err = __get_user(regs->y, &sf->info.si_regs.y);
+	err |= __get_user(psr, &sf->info.si_regs.psr);
+
+	for (i = UREG_G1; i <= UREG_I7; i++)
+		err |= __get_user(regs->u_regs[i], &sf->info.si_regs.u_regs[i]);
+	if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) {
+		err |= __get_user(i, &sf->v8plus.g_upper[0]);
+		if (i == SIGINFO_EXTRA_V8PLUS_MAGIC) {
+			unsigned long asi;
+
+			for (i = UREG_G1; i <= UREG_I7; i++)
+				err |= __get_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]);
+			err |= __get_user(asi, &sf->v8plus.asi);
+			regs->tstate &= ~TSTATE_ASI;
+			regs->tstate |= ((asi & 0xffUL) << 24UL);
+		}
+	}
+
+	/* User can only change condition codes in %tstate. */
+	regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
+	regs->tstate |= psr_to_tstate_icc(psr);
+
+	/* Prevent syscall restart.  */
+	pt_regs_clear_syscall(regs);
+
+	err |= __get_user(fpu_save, &sf->fpu_save);
+	if (fpu_save)
+		err |= restore_fpu_state32(regs, &sf->fpu_state);
+	err |= __get_user(seta[0], &sf->info.si_mask);
+	err |= copy_from_user(seta+1, &sf->extramask,
+			      (_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
+	if (err)
+	    	goto segv;
+	switch (_NSIG_WORDS) {
+		case 4: set.sig[3] = seta[6] + (((long)seta[7]) << 32);
+		case 3: set.sig[2] = seta[4] + (((long)seta[5]) << 32);
+		case 2: set.sig[1] = seta[2] + (((long)seta[3]) << 32);
+		case 1: set.sig[0] = seta[0] + (((long)seta[1]) << 32);
+	}
+	sigdelsetmask(&set, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+	current->blocked = set;
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+	return;
+
+segv:
+	force_sig(SIGSEGV, current);
+}
+
+asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
+{
+	struct rt_signal_frame32 __user *sf;
+	unsigned int psr, pc, npc, fpu_save, u_ss_sp;
+	mm_segment_t old_fs;
+	sigset_t set;
+	compat_sigset_t seta;
+	stack_t st;
+	int err, i;
+	
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+	synchronize_user_stack();
+	regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
+	sf = (struct rt_signal_frame32 __user *) regs->u_regs[UREG_FP];
+
+	/* 1. Make sure we are not getting garbage from the user */
+	if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
+	    (((unsigned long) sf) & 3))
+		goto segv;
+
+	get_user(pc, &sf->regs.pc);
+	__get_user(npc, &sf->regs.npc);
+
+	if ((pc | npc) & 3)
+		goto segv;
+
+	if (test_thread_flag(TIF_32BIT)) {
+		pc &= 0xffffffff;
+		npc &= 0xffffffff;
+	}
+	regs->tpc = pc;
+	regs->tnpc = npc;
+
+	/* 2. Restore the state */
+	err = __get_user(regs->y, &sf->regs.y);
+	err |= __get_user(psr, &sf->regs.psr);
+	
+	for (i = UREG_G1; i <= UREG_I7; i++)
+		err |= __get_user(regs->u_regs[i], &sf->regs.u_regs[i]);
+	if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) {
+		err |= __get_user(i, &sf->v8plus.g_upper[0]);
+		if (i == SIGINFO_EXTRA_V8PLUS_MAGIC) {
+			unsigned long asi;
+
+			for (i = UREG_G1; i <= UREG_I7; i++)
+				err |= __get_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]);
+			err |= __get_user(asi, &sf->v8plus.asi);
+			regs->tstate &= ~TSTATE_ASI;
+			regs->tstate |= ((asi & 0xffUL) << 24UL);
+		}
+	}
+
+	/* User can only change condition codes in %tstate. */
+	regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
+	regs->tstate |= psr_to_tstate_icc(psr);
+
+	/* Prevent syscall restart.  */
+	pt_regs_clear_syscall(regs);
+
+	err |= __get_user(fpu_save, &sf->fpu_save);
+	if (fpu_save)
+		err |= restore_fpu_state32(regs, &sf->fpu_state);
+	err |= copy_from_user(&seta, &sf->mask, sizeof(compat_sigset_t));
+	err |= __get_user(u_ss_sp, &sf->stack.ss_sp);
+	st.ss_sp = compat_ptr(u_ss_sp);
+	err |= __get_user(st.ss_flags, &sf->stack.ss_flags);
+	err |= __get_user(st.ss_size, &sf->stack.ss_size);
+	if (err)
+		goto segv;
+		
+	/* It is more difficult to avoid calling this function than to
+	   call it and ignore errors.  */
+	old_fs = get_fs();
+	set_fs(KERNEL_DS);
+	do_sigaltstack((stack_t __user *) &st, NULL, (unsigned long)sf);
+	set_fs(old_fs);
+	
+	switch (_NSIG_WORDS) {
+		case 4: set.sig[3] = seta.sig[6] + (((long)seta.sig[7]) << 32);
+		case 3: set.sig[2] = seta.sig[4] + (((long)seta.sig[5]) << 32);
+		case 2: set.sig[1] = seta.sig[2] + (((long)seta.sig[3]) << 32);
+		case 1: set.sig[0] = seta.sig[0] + (((long)seta.sig[1]) << 32);
+	}
+	sigdelsetmask(&set, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+	current->blocked = set;
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+	return;
+segv:
+	force_sig(SIGSEGV, current);
+}
+
+/* Checks if the fp is valid */
+static int invalid_frame_pointer(void __user *fp, int fplen)
+{
+	if ((((unsigned long) fp) & 7) || ((unsigned long)fp) > 0x100000000ULL - fplen)
+		return 1;
+	return 0;
+}
+
+static void __user *get_sigframe(struct sigaction *sa, struct pt_regs *regs, unsigned long framesize)
+{
+	unsigned long sp;
+	
+	regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
+	sp = regs->u_regs[UREG_FP];
+	
+	/*
+	 * If we are on the alternate signal stack and would overflow it, don't.
+	 * Return an always-bogus address instead so we will die with SIGSEGV.
+	 */
+	if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize)))
+		return (void __user *) -1L;
+
+	/* This is the X/Open sanctioned signal stack switching.  */
+	if (sa->sa_flags & SA_ONSTACK) {
+		if (sas_ss_flags(sp) == 0)
+			sp = current->sas_ss_sp + current->sas_ss_size;
+	}
+
+	/* Always align the stack frame.  This handles two cases.  First,
+	 * sigaltstack need not be mindful of platform specific stack
+	 * alignment.  Second, if we took this signal because the stack
+	 * is not aligned properly, we'd like to take the signal cleanly
+	 * and report that.
+	 */
+	sp &= ~7UL;
+
+	return (void __user *)(sp - framesize);
+}
+
+static int save_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+	unsigned long *fpregs = current_thread_info()->fpregs;
+	unsigned long fprs;
+	int err = 0;
+	
+	fprs = current_thread_info()->fpsaved[0];
+	if (fprs & FPRS_DL)
+		err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
+				    (sizeof(unsigned int) * 32));
+	if (fprs & FPRS_DU)
+		err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
+				    (sizeof(unsigned int) * 32));
+	err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
+	err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
+	err |= __put_user(fprs, &fpu->si_fprs);
+
+	return err;
+}
+
+static void setup_frame32(struct k_sigaction *ka, struct pt_regs *regs,
+			  int signo, sigset_t *oldset)
+{
+	struct signal_frame32 __user *sf;
+	int sigframe_size;
+	u32 psr;
+	int i, err;
+	unsigned int seta[_COMPAT_NSIG_WORDS];
+
+	/* 1. Make sure everything is clean */
+	synchronize_user_stack();
+	save_and_clear_fpu();
+	
+	sigframe_size = SF_ALIGNEDSZ;
+	if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
+		sigframe_size -= sizeof(__siginfo_fpu_t);
+
+	sf = (struct signal_frame32 __user *)
+		get_sigframe(&ka->sa, regs, sigframe_size);
+	
+	if (invalid_frame_pointer(sf, sigframe_size))
+		goto sigill;
+
+	if (get_thread_wsaved() != 0)
+		goto sigill;
+
+	/* 2. Save the current process state */
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	err  = put_user(regs->tpc, &sf->info.si_regs.pc);
+	err |= __put_user(regs->tnpc, &sf->info.si_regs.npc);
+	err |= __put_user(regs->y, &sf->info.si_regs.y);
+	psr = tstate_to_psr(regs->tstate);
+	if (current_thread_info()->fpsaved[0] & FPRS_FEF)
+		psr |= PSR_EF;
+	err |= __put_user(psr, &sf->info.si_regs.psr);
+	for (i = 0; i < 16; i++)
+		err |= __put_user(regs->u_regs[i], &sf->info.si_regs.u_regs[i]);
+	err |= __put_user(sizeof(siginfo_extra_v8plus_t), &sf->extra_size);
+	err |= __put_user(SIGINFO_EXTRA_V8PLUS_MAGIC, &sf->v8plus.g_upper[0]);
+	for (i = 1; i < 16; i++)
+		err |= __put_user(((u32 *)regs->u_regs)[2*i],
+				  &sf->v8plus.g_upper[i]);
+	err |= __put_user((regs->tstate & TSTATE_ASI) >> 24UL,
+			  &sf->v8plus.asi);
+
+	if (psr & PSR_EF) {
+		err |= save_fpu_state32(regs, &sf->fpu_state);
+		err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
+	} else {
+		err |= __put_user(0, &sf->fpu_save);
+	}
+
+	switch (_NSIG_WORDS) {
+	case 4: seta[7] = (oldset->sig[3] >> 32);
+	        seta[6] = oldset->sig[3];
+	case 3: seta[5] = (oldset->sig[2] >> 32);
+	        seta[4] = oldset->sig[2];
+	case 2: seta[3] = (oldset->sig[1] >> 32);
+	        seta[2] = oldset->sig[1];
+	case 1: seta[1] = (oldset->sig[0] >> 32);
+	        seta[0] = oldset->sig[0];
+	}
+	err |= __put_user(seta[0], &sf->info.si_mask);
+	err |= __copy_to_user(sf->extramask, seta + 1,
+			      (_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
+
+	err |= copy_in_user((u32 __user *)sf,
+			    (u32 __user *)(regs->u_regs[UREG_FP]),
+			    sizeof(struct reg_window32));
+	
+	if (err)
+		goto sigsegv;
+
+	/* 3. signal handler back-trampoline and parameters */
+	regs->u_regs[UREG_FP] = (unsigned long) sf;
+	regs->u_regs[UREG_I0] = signo;
+	regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
+	regs->u_regs[UREG_I2] = (unsigned long) &sf->info;
+
+	/* 4. signal handler */
+	regs->tpc = (unsigned long) ka->sa.sa_handler;
+	regs->tnpc = (regs->tpc + 4);
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+
+	/* 5. return to kernel instructions */
+	if (ka->ka_restorer) {
+		regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
+	} else {
+		/* Flush instruction space. */
+		unsigned long address = ((unsigned long)&(sf->insns[0]));
+		pgd_t *pgdp = pgd_offset(current->mm, address);
+		pud_t *pudp = pud_offset(pgdp, address);
+		pmd_t *pmdp = pmd_offset(pudp, address);
+		pte_t *ptep;
+		pte_t pte;
+
+		regs->u_regs[UREG_I7] = (unsigned long) (&(sf->insns[0]) - 2);
+	
+		err  = __put_user(0x821020d8, &sf->insns[0]); /*mov __NR_sigreturn, %g1*/
+		err |= __put_user(0x91d02010, &sf->insns[1]); /*t 0x10*/
+		if (err)
+			goto sigsegv;
+
+		preempt_disable();
+		ptep = pte_offset_map(pmdp, address);
+		pte = *ptep;
+		if (pte_present(pte)) {
+			unsigned long page = (unsigned long)
+				page_address(pte_page(pte));
+
+			wmb();
+			__asm__ __volatile__("flush	%0 + %1"
+					     : /* no outputs */
+					     : "r" (page),
+					       "r" (address & (PAGE_SIZE - 1))
+					     : "memory");
+		}
+		pte_unmap(ptep);
+		preempt_enable();
+	}
+	return;
+
+sigill:
+	do_exit(SIGILL);
+sigsegv:
+	force_sigsegv(signo, current);
+}
+
+static void setup_rt_frame32(struct k_sigaction *ka, struct pt_regs *regs,
+			     unsigned long signr, sigset_t *oldset,
+			     siginfo_t *info)
+{
+	struct rt_signal_frame32 __user *sf;
+	int sigframe_size;
+	u32 psr;
+	int i, err;
+	compat_sigset_t seta;
+
+	/* 1. Make sure everything is clean */
+	synchronize_user_stack();
+	save_and_clear_fpu();
+	
+	sigframe_size = RT_ALIGNEDSZ;
+	if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
+		sigframe_size -= sizeof(__siginfo_fpu_t);
+
+	sf = (struct rt_signal_frame32 __user *)
+		get_sigframe(&ka->sa, regs, sigframe_size);
+	
+	if (invalid_frame_pointer(sf, sigframe_size))
+		goto sigill;
+
+	if (get_thread_wsaved() != 0)
+		goto sigill;
+
+	/* 2. Save the current process state */
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	err  = put_user(regs->tpc, &sf->regs.pc);
+	err |= __put_user(regs->tnpc, &sf->regs.npc);
+	err |= __put_user(regs->y, &sf->regs.y);
+	psr = tstate_to_psr(regs->tstate);
+	if (current_thread_info()->fpsaved[0] & FPRS_FEF)
+		psr |= PSR_EF;
+	err |= __put_user(psr, &sf->regs.psr);
+	for (i = 0; i < 16; i++)
+		err |= __put_user(regs->u_regs[i], &sf->regs.u_regs[i]);
+	err |= __put_user(sizeof(siginfo_extra_v8plus_t), &sf->extra_size);
+	err |= __put_user(SIGINFO_EXTRA_V8PLUS_MAGIC, &sf->v8plus.g_upper[0]);
+	for (i = 1; i < 16; i++)
+		err |= __put_user(((u32 *)regs->u_regs)[2*i],
+				  &sf->v8plus.g_upper[i]);
+	err |= __put_user((regs->tstate & TSTATE_ASI) >> 24UL,
+			  &sf->v8plus.asi);
+
+	if (psr & PSR_EF) {
+		err |= save_fpu_state32(regs, &sf->fpu_state);
+		err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
+	} else {
+		err |= __put_user(0, &sf->fpu_save);
+	}
+
+	/* Update the siginfo structure.  */
+	err |= copy_siginfo_to_user32(&sf->info, info);
+	
+	/* Setup sigaltstack */
+	err |= __put_user(current->sas_ss_sp, &sf->stack.ss_sp);
+	err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &sf->stack.ss_flags);
+	err |= __put_user(current->sas_ss_size, &sf->stack.ss_size);
+
+	switch (_NSIG_WORDS) {
+	case 4: seta.sig[7] = (oldset->sig[3] >> 32);
+		seta.sig[6] = oldset->sig[3];
+	case 3: seta.sig[5] = (oldset->sig[2] >> 32);
+		seta.sig[4] = oldset->sig[2];
+	case 2: seta.sig[3] = (oldset->sig[1] >> 32);
+		seta.sig[2] = oldset->sig[1];
+	case 1: seta.sig[1] = (oldset->sig[0] >> 32);
+		seta.sig[0] = oldset->sig[0];
+	}
+	err |= __copy_to_user(&sf->mask, &seta, sizeof(compat_sigset_t));
+
+	err |= copy_in_user((u32 __user *)sf,
+			    (u32 __user *)(regs->u_regs[UREG_FP]),
+			    sizeof(struct reg_window32));
+	if (err)
+		goto sigsegv;
+	
+	/* 3. signal handler back-trampoline and parameters */
+	regs->u_regs[UREG_FP] = (unsigned long) sf;
+	regs->u_regs[UREG_I0] = signr;
+	regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
+	regs->u_regs[UREG_I2] = (unsigned long) &sf->regs;
+
+	/* 4. signal handler */
+	regs->tpc = (unsigned long) ka->sa.sa_handler;
+	regs->tnpc = (regs->tpc + 4);
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+
+	/* 5. return to kernel instructions */
+	if (ka->ka_restorer)
+		regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
+	else {
+		/* Flush instruction space. */
+		unsigned long address = ((unsigned long)&(sf->insns[0]));
+		pgd_t *pgdp = pgd_offset(current->mm, address);
+		pud_t *pudp = pud_offset(pgdp, address);
+		pmd_t *pmdp = pmd_offset(pudp, address);
+		pte_t *ptep;
+
+		regs->u_regs[UREG_I7] = (unsigned long) (&(sf->insns[0]) - 2);
+	
+		/* mov __NR_rt_sigreturn, %g1 */
+		err |= __put_user(0x82102065, &sf->insns[0]);
+
+		/* t 0x10 */
+		err |= __put_user(0x91d02010, &sf->insns[1]);
+		if (err)
+			goto sigsegv;
+
+		preempt_disable();
+		ptep = pte_offset_map(pmdp, address);
+		if (pte_present(*ptep)) {
+			unsigned long page = (unsigned long)
+				page_address(pte_page(*ptep));
+
+			wmb();
+			__asm__ __volatile__("flush	%0 + %1"
+					     : /* no outputs */
+					     : "r" (page),
+					       "r" (address & (PAGE_SIZE - 1))
+					     : "memory");
+		}
+		pte_unmap(ptep);
+		preempt_enable();
+	}
+	return;
+
+sigill:
+	do_exit(SIGILL);
+sigsegv:
+	force_sigsegv(signr, current);
+}
+
+static inline void handle_signal32(unsigned long signr, struct k_sigaction *ka,
+				   siginfo_t *info,
+				   sigset_t *oldset, struct pt_regs *regs)
+{
+	if (ka->sa.sa_flags & SA_SIGINFO)
+		setup_rt_frame32(ka, regs, signr, oldset, info);
+	else
+		setup_frame32(ka, regs, signr, oldset);
+
+	spin_lock_irq(&current->sighand->siglock);
+	sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+	if (!(ka->sa.sa_flags & SA_NOMASK))
+		sigaddset(&current->blocked,signr);
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+}
+
+static inline void syscall_restart32(unsigned long orig_i0, struct pt_regs *regs,
+				     struct sigaction *sa)
+{
+	switch (regs->u_regs[UREG_I0]) {
+	case ERESTART_RESTARTBLOCK:
+	case ERESTARTNOHAND:
+	no_system_call_restart:
+		regs->u_regs[UREG_I0] = EINTR;
+		regs->tstate |= TSTATE_ICARRY;
+		break;
+	case ERESTARTSYS:
+		if (!(sa->sa_flags & SA_RESTART))
+			goto no_system_call_restart;
+		/* fallthrough */
+	case ERESTARTNOINTR:
+		regs->u_regs[UREG_I0] = orig_i0;
+		regs->tpc -= 4;
+		regs->tnpc -= 4;
+	}
+}
+
+/* Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ */
+void do_signal32(sigset_t *oldset, struct pt_regs * regs,
+		 int restart_syscall, unsigned long orig_i0)
+{
+	struct k_sigaction ka;
+	siginfo_t info;
+	int signr;
+	
+	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+
+	/* If the debugger messes with the program counter, it clears
+	 * the "in syscall" bit, directing us to not perform a syscall
+	 * restart.
+	 */
+	if (restart_syscall && !pt_regs_is_syscall(regs))
+		restart_syscall = 0;
+
+	if (signr > 0) {
+		if (restart_syscall)
+			syscall_restart32(orig_i0, regs, &ka.sa);
+		handle_signal32(signr, &ka, &info, oldset, regs);
+
+		/* A signal was successfully delivered; the saved
+		 * sigmask will have been stored in the signal frame,
+		 * and will be restored by sigreturn, so we can simply
+		 * clear the TS_RESTORE_SIGMASK flag.
+		 */
+		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+
+		tracehook_signal_handler(signr, &info, &ka, regs, 0);
+		return;
+	}
+	if (restart_syscall &&
+	    (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
+	     regs->u_regs[UREG_I0] == ERESTARTSYS ||
+	     regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
+		/* replay the system call when we are done */
+		regs->u_regs[UREG_I0] = orig_i0;
+		regs->tpc -= 4;
+		regs->tnpc -= 4;
+	}
+	if (restart_syscall &&
+	    regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
+		regs->u_regs[UREG_G1] = __NR_restart_syscall;
+		regs->tpc -= 4;
+		regs->tnpc -= 4;
+	}
+
+	/* If there's no signal to deliver, we just put the saved sigmask
+	 * back
+	 */
+	if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
+		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+	}
+}
+
+struct sigstack32 {
+	u32 the_stack;
+	int cur_status;
+};
+
+asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp)
+{
+	struct sigstack32 __user *ssptr =
+		(struct sigstack32 __user *)((unsigned long)(u_ssptr));
+	struct sigstack32 __user *ossptr =
+		(struct sigstack32 __user *)((unsigned long)(u_ossptr));
+	int ret = -EFAULT;
+
+	/* First see if old state is wanted. */
+	if (ossptr) {
+		if (put_user(current->sas_ss_sp + current->sas_ss_size,
+			     &ossptr->the_stack) ||
+		    __put_user(on_sig_stack(sp), &ossptr->cur_status))
+			goto out;
+	}
+	
+	/* Now see if we want to update the new state. */
+	if (ssptr) {
+		u32 ss_sp;
+
+		if (get_user(ss_sp, &ssptr->the_stack))
+			goto out;
+
+		/* If the current stack was set with sigaltstack, don't
+		 * swap stacks while we are on it.
+		 */
+		ret = -EPERM;
+		if (current->sas_ss_sp && on_sig_stack(sp))
+			goto out;
+			
+		/* Since we don't know the extent of the stack, and we don't
+		 * track onstack-ness, but rather calculate it, we must
+		 * presume a size.  Ho hum this interface is lossy.
+		 */
+		current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
+		current->sas_ss_size = SIGSTKSZ;
+	}
+	
+	ret = 0;
+out:
+	return ret;
+}
+
+asmlinkage long do_sys32_sigaltstack(u32 ussa, u32 uossa, unsigned long sp)
+{
+	stack_t uss, uoss;
+	u32 u_ss_sp = 0;
+	int ret;
+	mm_segment_t old_fs;
+	stack_t32 __user *uss32 = compat_ptr(ussa);
+	stack_t32 __user *uoss32 = compat_ptr(uossa);
+	
+	if (ussa && (get_user(u_ss_sp, &uss32->ss_sp) ||
+		    __get_user(uss.ss_flags, &uss32->ss_flags) ||
+		    __get_user(uss.ss_size, &uss32->ss_size)))
+		return -EFAULT;
+	uss.ss_sp = compat_ptr(u_ss_sp);
+	old_fs = get_fs();
+	set_fs(KERNEL_DS);
+	ret = do_sigaltstack(ussa ? (stack_t __user *) &uss : NULL,
+			     uossa ? (stack_t __user *) &uoss : NULL, sp);
+	set_fs(old_fs);
+	if (!ret && uossa && (put_user(ptr_to_compat(uoss.ss_sp), &uoss32->ss_sp) ||
+		    __put_user(uoss.ss_flags, &uoss32->ss_flags) ||
+		    __put_user(uoss.ss_size, &uoss32->ss_size)))
+		return -EFAULT;
+	return ret;
+}
diff --git a/arch/sparc/kernel/signal.c b/arch/sparc/kernel/signal_32.c
index c94f91c8b6e0..c94f91c8b6e0 100644
--- a/arch/sparc/kernel/signal.c
+++ b/arch/sparc/kernel/signal_32.c
diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
new file mode 100644
index 000000000000..ec82d76dc6f2
--- /dev/null
+++ b/arch/sparc/kernel/signal_64.c
@@ -0,0 +1,617 @@
+/*
+ *  arch/sparc64/kernel/signal.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *  Copyright (C) 1995, 2008 David S. Miller (davem@davemloft.net)
+ *  Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *  Copyright (C) 1997 Eddie C. Dost   (ecd@skynet.be)
+ *  Copyright (C) 1997,1998 Jakub Jelinek   (jj@sunsite.mff.cuni.cz)
+ */
+
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>	/* for compat_old_sigset_t */
+#endif
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/tracehook.h>
+#include <linux/unistd.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/binfmts.h>
+#include <linux/bitops.h>
+
+#include <asm/uaccess.h>
+#include <asm/ptrace.h>
+#include <asm/pgtable.h>
+#include <asm/fpumacro.h>
+#include <asm/uctx.h>
+#include <asm/siginfo.h>
+#include <asm/visasm.h>
+
+#include "entry.h"
+#include "systbls.h"
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+/* {set, get}context() needed for 64-bit SparcLinux userland. */
+asmlinkage void sparc64_set_context(struct pt_regs *regs)
+{
+	struct ucontext __user *ucp = (struct ucontext __user *)
+		regs->u_regs[UREG_I0];
+	mc_gregset_t __user *grp;
+	unsigned long pc, npc, tstate;
+	unsigned long fp, i7;
+	unsigned char fenab;
+	int err;
+
+	flush_user_windows();
+	if (get_thread_wsaved()					||
+	    (((unsigned long)ucp) & (sizeof(unsigned long)-1))	||
+	    (!__access_ok(ucp, sizeof(*ucp))))
+		goto do_sigsegv;
+	grp  = &ucp->uc_mcontext.mc_gregs;
+	err  = __get_user(pc, &((*grp)[MC_PC]));
+	err |= __get_user(npc, &((*grp)[MC_NPC]));
+	if (err || ((pc | npc) & 3))
+		goto do_sigsegv;
+	if (regs->u_regs[UREG_I1]) {
+		sigset_t set;
+
+		if (_NSIG_WORDS == 1) {
+			if (__get_user(set.sig[0], &ucp->uc_sigmask.sig[0]))
+				goto do_sigsegv;
+		} else {
+			if (__copy_from_user(&set, &ucp->uc_sigmask, sizeof(sigset_t)))
+				goto do_sigsegv;
+		}
+		sigdelsetmask(&set, ~_BLOCKABLE);
+		spin_lock_irq(&current->sighand->siglock);
+		current->blocked = set;
+		recalc_sigpending();
+		spin_unlock_irq(&current->sighand->siglock);
+	}
+	if (test_thread_flag(TIF_32BIT)) {
+		pc &= 0xffffffff;
+		npc &= 0xffffffff;
+	}
+	regs->tpc = pc;
+	regs->tnpc = npc;
+	err |= __get_user(regs->y, &((*grp)[MC_Y]));
+	err |= __get_user(tstate, &((*grp)[MC_TSTATE]));
+	regs->tstate &= ~(TSTATE_ASI | TSTATE_ICC | TSTATE_XCC);
+	regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
+	err |= __get_user(regs->u_regs[UREG_G1], (&(*grp)[MC_G1]));
+	err |= __get_user(regs->u_regs[UREG_G2], (&(*grp)[MC_G2]));
+	err |= __get_user(regs->u_regs[UREG_G3], (&(*grp)[MC_G3]));
+	err |= __get_user(regs->u_regs[UREG_G4], (&(*grp)[MC_G4]));
+	err |= __get_user(regs->u_regs[UREG_G5], (&(*grp)[MC_G5]));
+	err |= __get_user(regs->u_regs[UREG_G6], (&(*grp)[MC_G6]));
+
+	/* Skip %g7 as that's the thread register in userspace.  */
+
+	err |= __get_user(regs->u_regs[UREG_I0], (&(*grp)[MC_O0]));
+	err |= __get_user(regs->u_regs[UREG_I1], (&(*grp)[MC_O1]));
+	err |= __get_user(regs->u_regs[UREG_I2], (&(*grp)[MC_O2]));
+	err |= __get_user(regs->u_regs[UREG_I3], (&(*grp)[MC_O3]));
+	err |= __get_user(regs->u_regs[UREG_I4], (&(*grp)[MC_O4]));
+	err |= __get_user(regs->u_regs[UREG_I5], (&(*grp)[MC_O5]));
+	err |= __get_user(regs->u_regs[UREG_I6], (&(*grp)[MC_O6]));
+	err |= __get_user(regs->u_regs[UREG_I7], (&(*grp)[MC_O7]));
+
+	err |= __get_user(fp, &(ucp->uc_mcontext.mc_fp));
+	err |= __get_user(i7, &(ucp->uc_mcontext.mc_i7));
+	err |= __put_user(fp,
+	      (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[6])));
+	err |= __put_user(i7,
+	      (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[7])));
+
+	err |= __get_user(fenab, &(ucp->uc_mcontext.mc_fpregs.mcfpu_enab));
+	if (fenab) {
+		unsigned long *fpregs = current_thread_info()->fpregs;
+		unsigned long fprs;
+		
+		fprs_write(0);
+		err |= __get_user(fprs, &(ucp->uc_mcontext.mc_fpregs.mcfpu_fprs));
+		if (fprs & FPRS_DL)
+			err |= copy_from_user(fpregs,
+					      &(ucp->uc_mcontext.mc_fpregs.mcfpu_fregs),
+					      (sizeof(unsigned int) * 32));
+		if (fprs & FPRS_DU)
+			err |= copy_from_user(fpregs+16,
+			 ((unsigned long __user *)&(ucp->uc_mcontext.mc_fpregs.mcfpu_fregs))+16,
+			 (sizeof(unsigned int) * 32));
+		err |= __get_user(current_thread_info()->xfsr[0],
+				  &(ucp->uc_mcontext.mc_fpregs.mcfpu_fsr));
+		err |= __get_user(current_thread_info()->gsr[0],
+				  &(ucp->uc_mcontext.mc_fpregs.mcfpu_gsr));
+		regs->tstate &= ~TSTATE_PEF;
+	}
+	if (err)
+		goto do_sigsegv;
+
+	return;
+do_sigsegv:
+	force_sig(SIGSEGV, current);
+}
+
+asmlinkage void sparc64_get_context(struct pt_regs *regs)
+{
+	struct ucontext __user *ucp = (struct ucontext __user *)
+		regs->u_regs[UREG_I0];
+	mc_gregset_t __user *grp;
+	mcontext_t __user *mcp;
+	unsigned long fp, i7;
+	unsigned char fenab;
+	int err;
+
+	synchronize_user_stack();
+	if (get_thread_wsaved() || clear_user(ucp, sizeof(*ucp)))
+		goto do_sigsegv;
+
+#if 1
+	fenab = 0; /* IMO get_context is like any other system call, thus modifies FPU state -jj */
+#else
+	fenab = (current_thread_info()->fpsaved[0] & FPRS_FEF);
+#endif
+		
+	mcp = &ucp->uc_mcontext;
+	grp = &mcp->mc_gregs;
+
+	/* Skip over the trap instruction, first. */
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc   = (regs->tnpc & 0xffffffff);
+		regs->tnpc  = (regs->tnpc + 4) & 0xffffffff;
+	} else {
+		regs->tpc   = regs->tnpc;
+		regs->tnpc += 4;
+	}
+	err = 0;
+	if (_NSIG_WORDS == 1)
+		err |= __put_user(current->blocked.sig[0],
+				  (unsigned long __user *)&ucp->uc_sigmask);
+	else
+		err |= __copy_to_user(&ucp->uc_sigmask, &current->blocked,
+				      sizeof(sigset_t));
+
+	err |= __put_user(regs->tstate, &((*grp)[MC_TSTATE]));
+	err |= __put_user(regs->tpc, &((*grp)[MC_PC]));
+	err |= __put_user(regs->tnpc, &((*grp)[MC_NPC]));
+	err |= __put_user(regs->y, &((*grp)[MC_Y]));
+	err |= __put_user(regs->u_regs[UREG_G1], &((*grp)[MC_G1]));
+	err |= __put_user(regs->u_regs[UREG_G2], &((*grp)[MC_G2]));
+	err |= __put_user(regs->u_regs[UREG_G3], &((*grp)[MC_G3]));
+	err |= __put_user(regs->u_regs[UREG_G4], &((*grp)[MC_G4]));
+	err |= __put_user(regs->u_regs[UREG_G5], &((*grp)[MC_G5]));
+	err |= __put_user(regs->u_regs[UREG_G6], &((*grp)[MC_G6]));
+	err |= __put_user(regs->u_regs[UREG_G7], &((*grp)[MC_G7]));
+	err |= __put_user(regs->u_regs[UREG_I0], &((*grp)[MC_O0]));
+	err |= __put_user(regs->u_regs[UREG_I1], &((*grp)[MC_O1]));
+	err |= __put_user(regs->u_regs[UREG_I2], &((*grp)[MC_O2]));
+	err |= __put_user(regs->u_regs[UREG_I3], &((*grp)[MC_O3]));
+	err |= __put_user(regs->u_regs[UREG_I4], &((*grp)[MC_O4]));
+	err |= __put_user(regs->u_regs[UREG_I5], &((*grp)[MC_O5]));
+	err |= __put_user(regs->u_regs[UREG_I6], &((*grp)[MC_O6]));
+	err |= __put_user(regs->u_regs[UREG_I7], &((*grp)[MC_O7]));
+
+	err |= __get_user(fp,
+		 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[6])));
+	err |= __get_user(i7,
+		 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[7])));
+	err |= __put_user(fp, &(mcp->mc_fp));
+	err |= __put_user(i7, &(mcp->mc_i7));
+
+	err |= __put_user(fenab, &(mcp->mc_fpregs.mcfpu_enab));
+	if (fenab) {
+		unsigned long *fpregs = current_thread_info()->fpregs;
+		unsigned long fprs;
+		
+		fprs = current_thread_info()->fpsaved[0];
+		if (fprs & FPRS_DL)
+			err |= copy_to_user(&(mcp->mc_fpregs.mcfpu_fregs), fpregs,
+					    (sizeof(unsigned int) * 32));
+		if (fprs & FPRS_DU)
+			err |= copy_to_user(
+                          ((unsigned long __user *)&(mcp->mc_fpregs.mcfpu_fregs))+16, fpregs+16,
+			  (sizeof(unsigned int) * 32));
+		err |= __put_user(current_thread_info()->xfsr[0], &(mcp->mc_fpregs.mcfpu_fsr));
+		err |= __put_user(current_thread_info()->gsr[0], &(mcp->mc_fpregs.mcfpu_gsr));
+		err |= __put_user(fprs, &(mcp->mc_fpregs.mcfpu_fprs));
+	}
+	if (err)
+		goto do_sigsegv;
+
+	return;
+do_sigsegv:
+	force_sig(SIGSEGV, current);
+}
+
+struct rt_signal_frame {
+	struct sparc_stackf	ss;
+	siginfo_t		info;
+	struct pt_regs		regs;
+	__siginfo_fpu_t __user	*fpu_save;
+	stack_t			stack;
+	sigset_t		mask;
+	__siginfo_fpu_t		fpu_state;
+};
+
+static long _sigpause_common(old_sigset_t set)
+{
+	set &= _BLOCKABLE;
+	spin_lock_irq(&current->sighand->siglock);
+	current->saved_sigmask = current->blocked;
+	siginitset(&current->blocked, set);
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+
+	set_restore_sigmask();
+
+	return -ERESTARTNOHAND;
+}
+
+asmlinkage long sys_sigpause(unsigned int set)
+{
+	return _sigpause_common(set);
+}
+
+asmlinkage long sys_sigsuspend(old_sigset_t set)
+{
+	return _sigpause_common(set);
+}
+
+static inline int
+restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+	unsigned long *fpregs = current_thread_info()->fpregs;
+	unsigned long fprs;
+	int err;
+
+	err = __get_user(fprs, &fpu->si_fprs);
+	fprs_write(0);
+	regs->tstate &= ~TSTATE_PEF;
+	if (fprs & FPRS_DL)
+		err |= copy_from_user(fpregs, &fpu->si_float_regs[0],
+		       	       (sizeof(unsigned int) * 32));
+	if (fprs & FPRS_DU)
+		err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32],
+		       	       (sizeof(unsigned int) * 32));
+	err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
+	err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
+	current_thread_info()->fpsaved[0] |= fprs;
+	return err;
+}
+
+void do_rt_sigreturn(struct pt_regs *regs)
+{
+	struct rt_signal_frame __user *sf;
+	unsigned long tpc, tnpc, tstate;
+	__siginfo_fpu_t __user *fpu_save;
+	sigset_t set;
+	int err;
+
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+	synchronize_user_stack ();
+	sf = (struct rt_signal_frame __user *)
+		(regs->u_regs [UREG_FP] + STACK_BIAS);
+
+	/* 1. Make sure we are not getting garbage from the user */
+	if (((unsigned long) sf) & 3)
+		goto segv;
+
+	err = get_user(tpc, &sf->regs.tpc);
+	err |= __get_user(tnpc, &sf->regs.tnpc);
+	if (test_thread_flag(TIF_32BIT)) {
+		tpc &= 0xffffffff;
+		tnpc &= 0xffffffff;
+	}
+	err |= ((tpc | tnpc) & 3);
+
+	/* 2. Restore the state */
+	err |= __get_user(regs->y, &sf->regs.y);
+	err |= __get_user(tstate, &sf->regs.tstate);
+	err |= copy_from_user(regs->u_regs, sf->regs.u_regs, sizeof(regs->u_regs));
+
+	/* User can only change condition codes and %asi in %tstate. */
+	regs->tstate &= ~(TSTATE_ASI | TSTATE_ICC | TSTATE_XCC);
+	regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
+
+	err |= __get_user(fpu_save, &sf->fpu_save);
+	if (fpu_save)
+		err |= restore_fpu_state(regs, &sf->fpu_state);
+
+	err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
+	err |= do_sigaltstack(&sf->stack, NULL, (unsigned long)sf);
+
+	if (err)
+		goto segv;
+
+	regs->tpc = tpc;
+	regs->tnpc = tnpc;
+
+	/* Prevent syscall restart.  */
+	pt_regs_clear_syscall(regs);
+
+	sigdelsetmask(&set, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+	current->blocked = set;
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+	return;
+segv:
+	force_sig(SIGSEGV, current);
+}
+
+/* Checks if the fp is valid */
+static int invalid_frame_pointer(void __user *fp, int fplen)
+{
+	if (((unsigned long) fp) & 7)
+		return 1;
+	return 0;
+}
+
+static inline int
+save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+	unsigned long *fpregs = current_thread_info()->fpregs;
+	unsigned long fprs;
+	int err = 0;
+	
+	fprs = current_thread_info()->fpsaved[0];
+	if (fprs & FPRS_DL)
+		err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
+				    (sizeof(unsigned int) * 32));
+	if (fprs & FPRS_DU)
+		err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
+				    (sizeof(unsigned int) * 32));
+	err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
+	err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
+	err |= __put_user(fprs, &fpu->si_fprs);
+
+	return err;
+}
+
+static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, unsigned long framesize)
+{
+	unsigned long sp = regs->u_regs[UREG_FP] + STACK_BIAS;
+
+	/*
+	 * If we are on the alternate signal stack and would overflow it, don't.
+	 * Return an always-bogus address instead so we will die with SIGSEGV.
+	 */
+	if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize)))
+		return (void __user *) -1L;
+
+	/* This is the X/Open sanctioned signal stack switching.  */
+	if (ka->sa.sa_flags & SA_ONSTACK) {
+		if (sas_ss_flags(sp) == 0)
+			sp = current->sas_ss_sp + current->sas_ss_size;
+	}
+
+	/* Always align the stack frame.  This handles two cases.  First,
+	 * sigaltstack need not be mindful of platform specific stack
+	 * alignment.  Second, if we took this signal because the stack
+	 * is not aligned properly, we'd like to take the signal cleanly
+	 * and report that.
+	 */
+	sp &= ~7UL;
+
+	return (void __user *)(sp - framesize);
+}
+
+static inline void
+setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
+	       int signo, sigset_t *oldset, siginfo_t *info)
+{
+	struct rt_signal_frame __user *sf;
+	int sigframe_size, err;
+
+	/* 1. Make sure everything is clean */
+	synchronize_user_stack();
+	save_and_clear_fpu();
+	
+	sigframe_size = sizeof(struct rt_signal_frame);
+	if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
+		sigframe_size -= sizeof(__siginfo_fpu_t);
+
+	sf = (struct rt_signal_frame __user *)
+		get_sigframe(ka, regs, sigframe_size);
+	
+	if (invalid_frame_pointer (sf, sigframe_size))
+		goto sigill;
+
+	if (get_thread_wsaved() != 0)
+		goto sigill;
+
+	/* 2. Save the current process state */
+	err = copy_to_user(&sf->regs, regs, sizeof (*regs));
+
+	if (current_thread_info()->fpsaved[0] & FPRS_FEF) {
+		err |= save_fpu_state(regs, &sf->fpu_state);
+		err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
+	} else {
+		err |= __put_user(0, &sf->fpu_save);
+	}
+	
+	/* Setup sigaltstack */
+	err |= __put_user(current->sas_ss_sp, &sf->stack.ss_sp);
+	err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &sf->stack.ss_flags);
+	err |= __put_user(current->sas_ss_size, &sf->stack.ss_size);
+
+	err |= copy_to_user(&sf->mask, oldset, sizeof(sigset_t));
+
+	err |= copy_in_user((u64 __user *)sf,
+			    (u64 __user *)(regs->u_regs[UREG_FP]+STACK_BIAS),
+			    sizeof(struct reg_window));
+
+	if (info)
+		err |= copy_siginfo_to_user(&sf->info, info);
+	else {
+		err |= __put_user(signo, &sf->info.si_signo);
+		err |= __put_user(SI_NOINFO, &sf->info.si_code);
+	}
+	if (err)
+		goto sigsegv;
+	
+	/* 3. signal handler back-trampoline and parameters */
+	regs->u_regs[UREG_FP] = ((unsigned long) sf) - STACK_BIAS;
+	regs->u_regs[UREG_I0] = signo;
+	regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
+
+	/* The sigcontext is passed in this way because of how it
+	 * is defined in GLIBC's /usr/include/bits/sigcontext.h
+	 * for sparc64.  It includes the 128 bytes of siginfo_t.
+	 */
+	regs->u_regs[UREG_I2] = (unsigned long) &sf->info;
+
+	/* 5. signal handler */
+	regs->tpc = (unsigned long) ka->sa.sa_handler;
+	regs->tnpc = (regs->tpc + 4);
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	/* 4. return to kernel instructions */
+	regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
+	return;
+
+sigill:
+	do_exit(SIGILL);
+sigsegv:
+	force_sigsegv(signo, current);
+}
+
+static inline void handle_signal(unsigned long signr, struct k_sigaction *ka,
+				 siginfo_t *info,
+				 sigset_t *oldset, struct pt_regs *regs)
+{
+	setup_rt_frame(ka, regs, signr, oldset,
+		       (ka->sa.sa_flags & SA_SIGINFO) ? info : NULL);
+	spin_lock_irq(&current->sighand->siglock);
+	sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+	if (!(ka->sa.sa_flags & SA_NOMASK))
+		sigaddset(&current->blocked,signr);
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+}
+
+static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
+				   struct sigaction *sa)
+{
+	switch (regs->u_regs[UREG_I0]) {
+	case ERESTART_RESTARTBLOCK:
+	case ERESTARTNOHAND:
+	no_system_call_restart:
+		regs->u_regs[UREG_I0] = EINTR;
+		regs->tstate |= (TSTATE_ICARRY|TSTATE_XCARRY);
+		break;
+	case ERESTARTSYS:
+		if (!(sa->sa_flags & SA_RESTART))
+			goto no_system_call_restart;
+		/* fallthrough */
+	case ERESTARTNOINTR:
+		regs->u_regs[UREG_I0] = orig_i0;
+		regs->tpc -= 4;
+		regs->tnpc -= 4;
+	}
+}
+
+/* Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ */
+static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
+{
+	struct k_sigaction ka;
+	int restart_syscall;
+	sigset_t *oldset;
+	siginfo_t info;
+	int signr;
+	
+	if (pt_regs_is_syscall(regs) &&
+	    (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY))) {
+		restart_syscall = 1;
+	} else
+		restart_syscall = 0;
+
+	if (current_thread_info()->status & TS_RESTORE_SIGMASK)
+		oldset = &current->saved_sigmask;
+	else
+		oldset = &current->blocked;
+
+#ifdef CONFIG_COMPAT
+	if (test_thread_flag(TIF_32BIT)) {
+		extern void do_signal32(sigset_t *, struct pt_regs *,
+					int restart_syscall,
+					unsigned long orig_i0);
+		do_signal32(oldset, regs, restart_syscall, orig_i0);
+		return;
+	}
+#endif	
+
+	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+
+	/* If the debugger messes with the program counter, it clears
+	 * the software "in syscall" bit, directing us to not perform
+	 * a syscall restart.
+	 */
+	if (restart_syscall && !pt_regs_is_syscall(regs))
+		restart_syscall = 0;
+
+	if (signr > 0) {
+		if (restart_syscall)
+			syscall_restart(orig_i0, regs, &ka.sa);
+		handle_signal(signr, &ka, &info, oldset, regs);
+
+		/* A signal was successfully delivered; the saved
+		 * sigmask will have been stored in the signal frame,
+		 * and will be restored by sigreturn, so we can simply
+		 * clear the TS_RESTORE_SIGMASK flag.
+		 */
+		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+
+		tracehook_signal_handler(signr, &info, &ka, regs, 0);
+		return;
+	}
+	if (restart_syscall &&
+	    (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
+	     regs->u_regs[UREG_I0] == ERESTARTSYS ||
+	     regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
+		/* replay the system call when we are done */
+		regs->u_regs[UREG_I0] = orig_i0;
+		regs->tpc -= 4;
+		regs->tnpc -= 4;
+	}
+	if (restart_syscall &&
+	    regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
+		regs->u_regs[UREG_G1] = __NR_restart_syscall;
+		regs->tpc -= 4;
+		regs->tnpc -= 4;
+	}
+
+	/* If there's no signal to deliver, we just put the saved sigmask
+	 * back
+	 */
+	if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
+		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+	}
+}
+
+void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long thread_info_flags)
+{
+	if (thread_info_flags & _TIF_SIGPENDING)
+		do_signal(regs, orig_i0);
+	if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+		clear_thread_flag(TIF_NOTIFY_RESUME);
+		tracehook_notify_resume(regs);
+	}
+}
diff --git a/arch/sparc/kernel/smp.c b/arch/sparc/kernel/smp_32.c
index 1e5ac4e282e1..1e5ac4e282e1 100644
--- a/arch/sparc/kernel/smp.c
+++ b/arch/sparc/kernel/smp_32.c
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
new file mode 100644
index 000000000000..46329799f346
--- /dev/null
+++ b/arch/sparc/kernel/smp_64.c
@@ -0,0 +1,1408 @@
+/* smp.c: Sparc64 SMP support.
+ *
+ * Copyright (C) 1997, 2007, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
+#include <linux/threads.h>
+#include <linux/smp.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/fs.h>
+#include <linux/seq_file.h>
+#include <linux/cache.h>
+#include <linux/jiffies.h>
+#include <linux/profile.h>
+#include <linux/lmb.h>
+#include <linux/cpu.h>
+
+#include <asm/head.h>
+#include <asm/ptrace.h>
+#include <asm/atomic.h>
+#include <asm/tlbflush.h>
+#include <asm/mmu_context.h>
+#include <asm/cpudata.h>
+#include <asm/hvtramp.h>
+#include <asm/io.h>
+#include <asm/timer.h>
+
+#include <asm/irq.h>
+#include <asm/irq_regs.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/oplib.h>
+#include <asm/uaccess.h>
+#include <asm/starfire.h>
+#include <asm/tlb.h>
+#include <asm/sections.h>
+#include <asm/prom.h>
+#include <asm/mdesc.h>
+#include <asm/ldc.h>
+#include <asm/hypervisor.h>
+
+int sparc64_multi_core __read_mostly;
+
+DEFINE_PER_CPU(cpumask_t, cpu_sibling_map) = CPU_MASK_NONE;
+cpumask_t cpu_core_map[NR_CPUS] __read_mostly =
+	{ [0 ... NR_CPUS-1] = CPU_MASK_NONE };
+
+EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
+EXPORT_SYMBOL(cpu_core_map);
+
+static cpumask_t smp_commenced_mask;
+
+void smp_info(struct seq_file *m)
+{
+	int i;
+	
+	seq_printf(m, "State:\n");
+	for_each_online_cpu(i)
+		seq_printf(m, "CPU%d:\t\tonline\n", i);
+}
+
+void smp_bogo(struct seq_file *m)
+{
+	int i;
+	
+	for_each_online_cpu(i)
+		seq_printf(m,
+			   "Cpu%dClkTck\t: %016lx\n",
+			   i, cpu_data(i).clock_tick);
+}
+
+extern void setup_sparc64_timer(void);
+
+static volatile unsigned long callin_flag = 0;
+
+void __cpuinit smp_callin(void)
+{
+	int cpuid = hard_smp_processor_id();
+
+	__local_per_cpu_offset = __per_cpu_offset(cpuid);
+
+	if (tlb_type == hypervisor)
+		sun4v_ktsb_register();
+
+	__flush_tlb_all();
+
+	setup_sparc64_timer();
+
+	if (cheetah_pcache_forced_on)
+		cheetah_enable_pcache();
+
+	local_irq_enable();
+
+	callin_flag = 1;
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "flush  %%g6" : : : "memory");
+
+	/* Clear this or we will die instantly when we
+	 * schedule back to this idler...
+	 */
+	current_thread_info()->new_child = 0;
+
+	/* Attach to the address space of init_task. */
+	atomic_inc(&init_mm.mm_count);
+	current->active_mm = &init_mm;
+
+	/* inform the notifiers about the new cpu */
+	notify_cpu_starting(cpuid);
+
+	while (!cpu_isset(cpuid, smp_commenced_mask))
+		rmb();
+
+	ipi_call_lock();
+	cpu_set(cpuid, cpu_online_map);
+	ipi_call_unlock();
+
+	/* idle thread is expected to have preempt disabled */
+	preempt_disable();
+}
+
+void cpu_panic(void)
+{
+	printk("CPU[%d]: Returns from cpu_idle!\n", smp_processor_id());
+	panic("SMP bolixed\n");
+}
+
+/* This tick register synchronization scheme is taken entirely from
+ * the ia64 port, see arch/ia64/kernel/smpboot.c for details and credit.
+ *
+ * The only change I've made is to rework it so that the master
+ * initiates the synchonization instead of the slave. -DaveM
+ */
+
+#define MASTER	0
+#define SLAVE	(SMP_CACHE_BYTES/sizeof(unsigned long))
+
+#define NUM_ROUNDS	64	/* magic value */
+#define NUM_ITERS	5	/* likewise */
+
+static DEFINE_SPINLOCK(itc_sync_lock);
+static unsigned long go[SLAVE + 1];
+
+#define DEBUG_TICK_SYNC	0
+
+static inline long get_delta (long *rt, long *master)
+{
+	unsigned long best_t0 = 0, best_t1 = ~0UL, best_tm = 0;
+	unsigned long tcenter, t0, t1, tm;
+	unsigned long i;
+
+	for (i = 0; i < NUM_ITERS; i++) {
+		t0 = tick_ops->get_tick();
+		go[MASTER] = 1;
+		membar_safe("#StoreLoad");
+		while (!(tm = go[SLAVE]))
+			rmb();
+		go[SLAVE] = 0;
+		wmb();
+		t1 = tick_ops->get_tick();
+
+		if (t1 - t0 < best_t1 - best_t0)
+			best_t0 = t0, best_t1 = t1, best_tm = tm;
+	}
+
+	*rt = best_t1 - best_t0;
+	*master = best_tm - best_t0;
+
+	/* average best_t0 and best_t1 without overflow: */
+	tcenter = (best_t0/2 + best_t1/2);
+	if (best_t0 % 2 + best_t1 % 2 == 2)
+		tcenter++;
+	return tcenter - best_tm;
+}
+
+void smp_synchronize_tick_client(void)
+{
+	long i, delta, adj, adjust_latency = 0, done = 0;
+	unsigned long flags, rt, master_time_stamp, bound;
+#if DEBUG_TICK_SYNC
+	struct {
+		long rt;	/* roundtrip time */
+		long master;	/* master's timestamp */
+		long diff;	/* difference between midpoint and master's timestamp */
+		long lat;	/* estimate of itc adjustment latency */
+	} t[NUM_ROUNDS];
+#endif
+
+	go[MASTER] = 1;
+
+	while (go[MASTER])
+		rmb();
+
+	local_irq_save(flags);
+	{
+		for (i = 0; i < NUM_ROUNDS; i++) {
+			delta = get_delta(&rt, &master_time_stamp);
+			if (delta == 0) {
+				done = 1;	/* let's lock on to this... */
+				bound = rt;
+			}
+
+			if (!done) {
+				if (i > 0) {
+					adjust_latency += -delta;
+					adj = -delta + adjust_latency/4;
+				} else
+					adj = -delta;
+
+				tick_ops->add_tick(adj);
+			}
+#if DEBUG_TICK_SYNC
+			t[i].rt = rt;
+			t[i].master = master_time_stamp;
+			t[i].diff = delta;
+			t[i].lat = adjust_latency/4;
+#endif
+		}
+	}
+	local_irq_restore(flags);
+
+#if DEBUG_TICK_SYNC
+	for (i = 0; i < NUM_ROUNDS; i++)
+		printk("rt=%5ld master=%5ld diff=%5ld adjlat=%5ld\n",
+		       t[i].rt, t[i].master, t[i].diff, t[i].lat);
+#endif
+
+	printk(KERN_INFO "CPU %d: synchronized TICK with master CPU "
+	       "(last diff %ld cycles, maxerr %lu cycles)\n",
+	       smp_processor_id(), delta, rt);
+}
+
+static void smp_start_sync_tick_client(int cpu);
+
+static void smp_synchronize_one_tick(int cpu)
+{
+	unsigned long flags, i;
+
+	go[MASTER] = 0;
+
+	smp_start_sync_tick_client(cpu);
+
+	/* wait for client to be ready */
+	while (!go[MASTER])
+		rmb();
+
+	/* now let the client proceed into his loop */
+	go[MASTER] = 0;
+	membar_safe("#StoreLoad");
+
+	spin_lock_irqsave(&itc_sync_lock, flags);
+	{
+		for (i = 0; i < NUM_ROUNDS*NUM_ITERS; i++) {
+			while (!go[MASTER])
+				rmb();
+			go[MASTER] = 0;
+			wmb();
+			go[SLAVE] = tick_ops->get_tick();
+			membar_safe("#StoreLoad");
+		}
+	}
+	spin_unlock_irqrestore(&itc_sync_lock, flags);
+}
+
+#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
+/* XXX Put this in some common place. XXX */
+static unsigned long kimage_addr_to_ra(void *p)
+{
+	unsigned long val = (unsigned long) p;
+
+	return kern_base + (val - KERNBASE);
+}
+
+static void __cpuinit ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg)
+{
+	extern unsigned long sparc64_ttable_tl0;
+	extern unsigned long kern_locked_tte_data;
+	struct hvtramp_descr *hdesc;
+	unsigned long trampoline_ra;
+	struct trap_per_cpu *tb;
+	u64 tte_vaddr, tte_data;
+	unsigned long hv_err;
+	int i;
+
+	hdesc = kzalloc(sizeof(*hdesc) +
+			(sizeof(struct hvtramp_mapping) *
+			 num_kernel_image_mappings - 1),
+			GFP_KERNEL);
+	if (!hdesc) {
+		printk(KERN_ERR "ldom_startcpu_cpuid: Cannot allocate "
+		       "hvtramp_descr.\n");
+		return;
+	}
+
+	hdesc->cpu = cpu;
+	hdesc->num_mappings = num_kernel_image_mappings;
+
+	tb = &trap_block[cpu];
+	tb->hdesc = hdesc;
+
+	hdesc->fault_info_va = (unsigned long) &tb->fault_info;
+	hdesc->fault_info_pa = kimage_addr_to_ra(&tb->fault_info);
+
+	hdesc->thread_reg = thread_reg;
+
+	tte_vaddr = (unsigned long) KERNBASE;
+	tte_data = kern_locked_tte_data;
+
+	for (i = 0; i < hdesc->num_mappings; i++) {
+		hdesc->maps[i].vaddr = tte_vaddr;
+		hdesc->maps[i].tte   = tte_data;
+		tte_vaddr += 0x400000;
+		tte_data  += 0x400000;
+	}
+
+	trampoline_ra = kimage_addr_to_ra(hv_cpu_startup);
+
+	hv_err = sun4v_cpu_start(cpu, trampoline_ra,
+				 kimage_addr_to_ra(&sparc64_ttable_tl0),
+				 __pa(hdesc));
+	if (hv_err)
+		printk(KERN_ERR "ldom_startcpu_cpuid: sun4v_cpu_start() "
+		       "gives error %lu\n", hv_err);
+}
+#endif
+
+extern unsigned long sparc64_cpu_startup;
+
+/* The OBP cpu startup callback truncates the 3rd arg cookie to
+ * 32-bits (I think) so to be safe we have it read the pointer
+ * contained here so we work on >4GB machines. -DaveM
+ */
+static struct thread_info *cpu_new_thread = NULL;
+
+static int __cpuinit smp_boot_one_cpu(unsigned int cpu)
+{
+	struct trap_per_cpu *tb = &trap_block[cpu];
+	unsigned long entry =
+		(unsigned long)(&sparc64_cpu_startup);
+	unsigned long cookie =
+		(unsigned long)(&cpu_new_thread);
+	struct task_struct *p;
+	int timeout, ret;
+
+	p = fork_idle(cpu);
+	if (IS_ERR(p))
+		return PTR_ERR(p);
+	callin_flag = 0;
+	cpu_new_thread = task_thread_info(p);
+
+	if (tlb_type == hypervisor) {
+#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
+		if (ldom_domaining_enabled)
+			ldom_startcpu_cpuid(cpu,
+					    (unsigned long) cpu_new_thread);
+		else
+#endif
+			prom_startcpu_cpuid(cpu, entry, cookie);
+	} else {
+		struct device_node *dp = of_find_node_by_cpuid(cpu);
+
+		prom_startcpu(dp->node, entry, cookie);
+	}
+
+	for (timeout = 0; timeout < 50000; timeout++) {
+		if (callin_flag)
+			break;
+		udelay(100);
+	}
+
+	if (callin_flag) {
+		ret = 0;
+	} else {
+		printk("Processor %d is stuck.\n", cpu);
+		ret = -ENODEV;
+	}
+	cpu_new_thread = NULL;
+
+	if (tb->hdesc) {
+		kfree(tb->hdesc);
+		tb->hdesc = NULL;
+	}
+
+	return ret;
+}
+
+static void spitfire_xcall_helper(u64 data0, u64 data1, u64 data2, u64 pstate, unsigned long cpu)
+{
+	u64 result, target;
+	int stuck, tmp;
+
+	if (this_is_starfire) {
+		/* map to real upaid */
+		cpu = (((cpu & 0x3c) << 1) |
+			((cpu & 0x40) >> 4) |
+			(cpu & 0x3));
+	}
+
+	target = (cpu << 14) | 0x70;
+again:
+	/* Ok, this is the real Spitfire Errata #54.
+	 * One must read back from a UDB internal register
+	 * after writes to the UDB interrupt dispatch, but
+	 * before the membar Sync for that write.
+	 * So we use the high UDB control register (ASI 0x7f,
+	 * ADDR 0x20) for the dummy read. -DaveM
+	 */
+	tmp = 0x40;
+	__asm__ __volatile__(
+	"wrpr	%1, %2, %%pstate\n\t"
+	"stxa	%4, [%0] %3\n\t"
+	"stxa	%5, [%0+%8] %3\n\t"
+	"add	%0, %8, %0\n\t"
+	"stxa	%6, [%0+%8] %3\n\t"
+	"membar	#Sync\n\t"
+	"stxa	%%g0, [%7] %3\n\t"
+	"membar	#Sync\n\t"
+	"mov	0x20, %%g1\n\t"
+	"ldxa	[%%g1] 0x7f, %%g0\n\t"
+	"membar	#Sync"
+	: "=r" (tmp)
+	: "r" (pstate), "i" (PSTATE_IE), "i" (ASI_INTR_W),
+	  "r" (data0), "r" (data1), "r" (data2), "r" (target),
+	  "r" (0x10), "0" (tmp)
+        : "g1");
+
+	/* NOTE: PSTATE_IE is still clear. */
+	stuck = 100000;
+	do {
+		__asm__ __volatile__("ldxa [%%g0] %1, %0"
+			: "=r" (result)
+			: "i" (ASI_INTR_DISPATCH_STAT));
+		if (result == 0) {
+			__asm__ __volatile__("wrpr %0, 0x0, %%pstate"
+					     : : "r" (pstate));
+			return;
+		}
+		stuck -= 1;
+		if (stuck == 0)
+			break;
+	} while (result & 0x1);
+	__asm__ __volatile__("wrpr %0, 0x0, %%pstate"
+			     : : "r" (pstate));
+	if (stuck == 0) {
+		printk("CPU[%d]: mondo stuckage result[%016lx]\n",
+		       smp_processor_id(), result);
+	} else {
+		udelay(2);
+		goto again;
+	}
+}
+
+static void spitfire_xcall_deliver(struct trap_per_cpu *tb, int cnt)
+{
+	u64 *mondo, data0, data1, data2;
+	u16 *cpu_list;
+	u64 pstate;
+	int i;
+
+	__asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
+	cpu_list = __va(tb->cpu_list_pa);
+	mondo = __va(tb->cpu_mondo_block_pa);
+	data0 = mondo[0];
+	data1 = mondo[1];
+	data2 = mondo[2];
+	for (i = 0; i < cnt; i++)
+		spitfire_xcall_helper(data0, data1, data2, pstate, cpu_list[i]);
+}
+
+/* Cheetah now allows to send the whole 64-bytes of data in the interrupt
+ * packet, but we have no use for that.  However we do take advantage of
+ * the new pipelining feature (ie. dispatch to multiple cpus simultaneously).
+ */
+static void cheetah_xcall_deliver(struct trap_per_cpu *tb, int cnt)
+{
+	int nack_busy_id, is_jbus, need_more;
+	u64 *mondo, pstate, ver, busy_mask;
+	u16 *cpu_list;
+
+	cpu_list = __va(tb->cpu_list_pa);
+	mondo = __va(tb->cpu_mondo_block_pa);
+
+	/* Unfortunately, someone at Sun had the brilliant idea to make the
+	 * busy/nack fields hard-coded by ITID number for this Ultra-III
+	 * derivative processor.
+	 */
+	__asm__ ("rdpr %%ver, %0" : "=r" (ver));
+	is_jbus = ((ver >> 32) == __JALAPENO_ID ||
+		   (ver >> 32) == __SERRANO_ID);
+
+	__asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
+
+retry:
+	need_more = 0;
+	__asm__ __volatile__("wrpr %0, %1, %%pstate\n\t"
+			     : : "r" (pstate), "i" (PSTATE_IE));
+
+	/* Setup the dispatch data registers. */
+	__asm__ __volatile__("stxa	%0, [%3] %6\n\t"
+			     "stxa	%1, [%4] %6\n\t"
+			     "stxa	%2, [%5] %6\n\t"
+			     "membar	#Sync\n\t"
+			     : /* no outputs */
+			     : "r" (mondo[0]), "r" (mondo[1]), "r" (mondo[2]),
+			       "r" (0x40), "r" (0x50), "r" (0x60),
+			       "i" (ASI_INTR_W));
+
+	nack_busy_id = 0;
+	busy_mask = 0;
+	{
+		int i;
+
+		for (i = 0; i < cnt; i++) {
+			u64 target, nr;
+
+			nr = cpu_list[i];
+			if (nr == 0xffff)
+				continue;
+
+			target = (nr << 14) | 0x70;
+			if (is_jbus) {
+				busy_mask |= (0x1UL << (nr * 2));
+			} else {
+				target |= (nack_busy_id << 24);
+				busy_mask |= (0x1UL <<
+					      (nack_busy_id * 2));
+			}
+			__asm__ __volatile__(
+				"stxa	%%g0, [%0] %1\n\t"
+				"membar	#Sync\n\t"
+				: /* no outputs */
+				: "r" (target), "i" (ASI_INTR_W));
+			nack_busy_id++;
+			if (nack_busy_id == 32) {
+				need_more = 1;
+				break;
+			}
+		}
+	}
+
+	/* Now, poll for completion. */
+	{
+		u64 dispatch_stat, nack_mask;
+		long stuck;
+
+		stuck = 100000 * nack_busy_id;
+		nack_mask = busy_mask << 1;
+		do {
+			__asm__ __volatile__("ldxa	[%%g0] %1, %0"
+					     : "=r" (dispatch_stat)
+					     : "i" (ASI_INTR_DISPATCH_STAT));
+			if (!(dispatch_stat & (busy_mask | nack_mask))) {
+				__asm__ __volatile__("wrpr %0, 0x0, %%pstate"
+						     : : "r" (pstate));
+				if (unlikely(need_more)) {
+					int i, this_cnt = 0;
+					for (i = 0; i < cnt; i++) {
+						if (cpu_list[i] == 0xffff)
+							continue;
+						cpu_list[i] = 0xffff;
+						this_cnt++;
+						if (this_cnt == 32)
+							break;
+					}
+					goto retry;
+				}
+				return;
+			}
+			if (!--stuck)
+				break;
+		} while (dispatch_stat & busy_mask);
+
+		__asm__ __volatile__("wrpr %0, 0x0, %%pstate"
+				     : : "r" (pstate));
+
+		if (dispatch_stat & busy_mask) {
+			/* Busy bits will not clear, continue instead
+			 * of freezing up on this cpu.
+			 */
+			printk("CPU[%d]: mondo stuckage result[%016lx]\n",
+			       smp_processor_id(), dispatch_stat);
+		} else {
+			int i, this_busy_nack = 0;
+
+			/* Delay some random time with interrupts enabled
+			 * to prevent deadlock.
+			 */
+			udelay(2 * nack_busy_id);
+
+			/* Clear out the mask bits for cpus which did not
+			 * NACK us.
+			 */
+			for (i = 0; i < cnt; i++) {
+				u64 check_mask, nr;
+
+				nr = cpu_list[i];
+				if (nr == 0xffff)
+					continue;
+
+				if (is_jbus)
+					check_mask = (0x2UL << (2*nr));
+				else
+					check_mask = (0x2UL <<
+						      this_busy_nack);
+				if ((dispatch_stat & check_mask) == 0)
+					cpu_list[i] = 0xffff;
+				this_busy_nack += 2;
+				if (this_busy_nack == 64)
+					break;
+			}
+
+			goto retry;
+		}
+	}
+}
+
+/* Multi-cpu list version.  */
+static void hypervisor_xcall_deliver(struct trap_per_cpu *tb, int cnt)
+{
+	int retries, this_cpu, prev_sent, i, saw_cpu_error;
+	unsigned long status;
+	u16 *cpu_list;
+
+	this_cpu = smp_processor_id();
+
+	cpu_list = __va(tb->cpu_list_pa);
+
+	saw_cpu_error = 0;
+	retries = 0;
+	prev_sent = 0;
+	do {
+		int forward_progress, n_sent;
+
+		status = sun4v_cpu_mondo_send(cnt,
+					      tb->cpu_list_pa,
+					      tb->cpu_mondo_block_pa);
+
+		/* HV_EOK means all cpus received the xcall, we're done.  */
+		if (likely(status == HV_EOK))
+			break;
+
+		/* First, see if we made any forward progress.
+		 *
+		 * The hypervisor indicates successful sends by setting
+		 * cpu list entries to the value 0xffff.
+		 */
+		n_sent = 0;
+		for (i = 0; i < cnt; i++) {
+			if (likely(cpu_list[i] == 0xffff))
+				n_sent++;
+		}
+
+		forward_progress = 0;
+		if (n_sent > prev_sent)
+			forward_progress = 1;
+
+		prev_sent = n_sent;
+
+		/* If we get a HV_ECPUERROR, then one or more of the cpus
+		 * in the list are in error state.  Use the cpu_state()
+		 * hypervisor call to find out which cpus are in error state.
+		 */
+		if (unlikely(status == HV_ECPUERROR)) {
+			for (i = 0; i < cnt; i++) {
+				long err;
+				u16 cpu;
+
+				cpu = cpu_list[i];
+				if (cpu == 0xffff)
+					continue;
+
+				err = sun4v_cpu_state(cpu);
+				if (err == HV_CPU_STATE_ERROR) {
+					saw_cpu_error = (cpu + 1);
+					cpu_list[i] = 0xffff;
+				}
+			}
+		} else if (unlikely(status != HV_EWOULDBLOCK))
+			goto fatal_mondo_error;
+
+		/* Don't bother rewriting the CPU list, just leave the
+		 * 0xffff and non-0xffff entries in there and the
+		 * hypervisor will do the right thing.
+		 *
+		 * Only advance timeout state if we didn't make any
+		 * forward progress.
+		 */
+		if (unlikely(!forward_progress)) {
+			if (unlikely(++retries > 10000))
+				goto fatal_mondo_timeout;
+
+			/* Delay a little bit to let other cpus catch up
+			 * on their cpu mondo queue work.
+			 */
+			udelay(2 * cnt);
+		}
+	} while (1);
+
+	if (unlikely(saw_cpu_error))
+		goto fatal_mondo_cpu_error;
+
+	return;
+
+fatal_mondo_cpu_error:
+	printk(KERN_CRIT "CPU[%d]: SUN4V mondo cpu error, some target cpus "
+	       "(including %d) were in error state\n",
+	       this_cpu, saw_cpu_error - 1);
+	return;
+
+fatal_mondo_timeout:
+	printk(KERN_CRIT "CPU[%d]: SUN4V mondo timeout, no forward "
+	       " progress after %d retries.\n",
+	       this_cpu, retries);
+	goto dump_cpu_list_and_out;
+
+fatal_mondo_error:
+	printk(KERN_CRIT "CPU[%d]: Unexpected SUN4V mondo error %lu\n",
+	       this_cpu, status);
+	printk(KERN_CRIT "CPU[%d]: Args were cnt(%d) cpulist_pa(%lx) "
+	       "mondo_block_pa(%lx)\n",
+	       this_cpu, cnt, tb->cpu_list_pa, tb->cpu_mondo_block_pa);
+
+dump_cpu_list_and_out:
+	printk(KERN_CRIT "CPU[%d]: CPU list [ ", this_cpu);
+	for (i = 0; i < cnt; i++)
+		printk("%u ", cpu_list[i]);
+	printk("]\n");
+}
+
+static void (*xcall_deliver_impl)(struct trap_per_cpu *, int);
+
+static void xcall_deliver(u64 data0, u64 data1, u64 data2, const cpumask_t *mask)
+{
+	struct trap_per_cpu *tb;
+	int this_cpu, i, cnt;
+	unsigned long flags;
+	u16 *cpu_list;
+	u64 *mondo;
+
+	/* We have to do this whole thing with interrupts fully disabled.
+	 * Otherwise if we send an xcall from interrupt context it will
+	 * corrupt both our mondo block and cpu list state.
+	 *
+	 * One consequence of this is that we cannot use timeout mechanisms
+	 * that depend upon interrupts being delivered locally.  So, for
+	 * example, we cannot sample jiffies and expect it to advance.
+	 *
+	 * Fortunately, udelay() uses %stick/%tick so we can use that.
+	 */
+	local_irq_save(flags);
+
+	this_cpu = smp_processor_id();
+	tb = &trap_block[this_cpu];
+
+	mondo = __va(tb->cpu_mondo_block_pa);
+	mondo[0] = data0;
+	mondo[1] = data1;
+	mondo[2] = data2;
+	wmb();
+
+	cpu_list = __va(tb->cpu_list_pa);
+
+	/* Setup the initial cpu list.  */
+	cnt = 0;
+	for_each_cpu(i, mask) {
+		if (i == this_cpu || !cpu_online(i))
+			continue;
+		cpu_list[cnt++] = i;
+	}
+
+	if (cnt)
+		xcall_deliver_impl(tb, cnt);
+
+	local_irq_restore(flags);
+}
+
+/* Send cross call to all processors mentioned in MASK_P
+ * except self.  Really, there are only two cases currently,
+ * "&cpu_online_map" and "&mm->cpu_vm_mask".
+ */
+static void smp_cross_call_masked(unsigned long *func, u32 ctx, u64 data1, u64 data2, const cpumask_t *mask)
+{
+	u64 data0 = (((u64)ctx)<<32 | (((u64)func) & 0xffffffff));
+
+	xcall_deliver(data0, data1, data2, mask);
+}
+
+/* Send cross call to all processors except self. */
+static void smp_cross_call(unsigned long *func, u32 ctx, u64 data1, u64 data2)
+{
+	smp_cross_call_masked(func, ctx, data1, data2, &cpu_online_map);
+}
+
+extern unsigned long xcall_sync_tick;
+
+static void smp_start_sync_tick_client(int cpu)
+{
+	xcall_deliver((u64) &xcall_sync_tick, 0, 0,
+		      &cpumask_of_cpu(cpu));
+}
+
+extern unsigned long xcall_call_function;
+
+void arch_send_call_function_ipi(cpumask_t mask)
+{
+	xcall_deliver((u64) &xcall_call_function, 0, 0, &mask);
+}
+
+extern unsigned long xcall_call_function_single;
+
+void arch_send_call_function_single_ipi(int cpu)
+{
+	xcall_deliver((u64) &xcall_call_function_single, 0, 0,
+		      &cpumask_of_cpu(cpu));
+}
+
+void smp_call_function_client(int irq, struct pt_regs *regs)
+{
+	clear_softint(1 << irq);
+	generic_smp_call_function_interrupt();
+}
+
+void smp_call_function_single_client(int irq, struct pt_regs *regs)
+{
+	clear_softint(1 << irq);
+	generic_smp_call_function_single_interrupt();
+}
+
+static void tsb_sync(void *info)
+{
+	struct trap_per_cpu *tp = &trap_block[raw_smp_processor_id()];
+	struct mm_struct *mm = info;
+
+	/* It is not valid to test "currrent->active_mm == mm" here.
+	 *
+	 * The value of "current" is not changed atomically with
+	 * switch_mm().  But that's OK, we just need to check the
+	 * current cpu's trap block PGD physical address.
+	 */
+	if (tp->pgd_paddr == __pa(mm->pgd))
+		tsb_context_switch(mm);
+}
+
+void smp_tsb_sync(struct mm_struct *mm)
+{
+	smp_call_function_mask(mm->cpu_vm_mask, tsb_sync, mm, 1);
+}
+
+extern unsigned long xcall_flush_tlb_mm;
+extern unsigned long xcall_flush_tlb_pending;
+extern unsigned long xcall_flush_tlb_kernel_range;
+extern unsigned long xcall_fetch_glob_regs;
+extern unsigned long xcall_receive_signal;
+extern unsigned long xcall_new_mmu_context_version;
+#ifdef CONFIG_KGDB
+extern unsigned long xcall_kgdb_capture;
+#endif
+
+#ifdef DCACHE_ALIASING_POSSIBLE
+extern unsigned long xcall_flush_dcache_page_cheetah;
+#endif
+extern unsigned long xcall_flush_dcache_page_spitfire;
+
+#ifdef CONFIG_DEBUG_DCFLUSH
+extern atomic_t dcpage_flushes;
+extern atomic_t dcpage_flushes_xcall;
+#endif
+
+static inline void __local_flush_dcache_page(struct page *page)
+{
+#ifdef DCACHE_ALIASING_POSSIBLE
+	__flush_dcache_page(page_address(page),
+			    ((tlb_type == spitfire) &&
+			     page_mapping(page) != NULL));
+#else
+	if (page_mapping(page) != NULL &&
+	    tlb_type == spitfire)
+		__flush_icache_page(__pa(page_address(page)));
+#endif
+}
+
+void smp_flush_dcache_page_impl(struct page *page, int cpu)
+{
+	int this_cpu;
+
+	if (tlb_type == hypervisor)
+		return;
+
+#ifdef CONFIG_DEBUG_DCFLUSH
+	atomic_inc(&dcpage_flushes);
+#endif
+
+	this_cpu = get_cpu();
+
+	if (cpu == this_cpu) {
+		__local_flush_dcache_page(page);
+	} else if (cpu_online(cpu)) {
+		void *pg_addr = page_address(page);
+		u64 data0 = 0;
+
+		if (tlb_type == spitfire) {
+			data0 = ((u64)&xcall_flush_dcache_page_spitfire);
+			if (page_mapping(page) != NULL)
+				data0 |= ((u64)1 << 32);
+		} else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
+#ifdef DCACHE_ALIASING_POSSIBLE
+			data0 =	((u64)&xcall_flush_dcache_page_cheetah);
+#endif
+		}
+		if (data0) {
+			xcall_deliver(data0, __pa(pg_addr),
+				      (u64) pg_addr, &cpumask_of_cpu(cpu));
+#ifdef CONFIG_DEBUG_DCFLUSH
+			atomic_inc(&dcpage_flushes_xcall);
+#endif
+		}
+	}
+
+	put_cpu();
+}
+
+void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
+{
+	void *pg_addr;
+	int this_cpu;
+	u64 data0;
+
+	if (tlb_type == hypervisor)
+		return;
+
+	this_cpu = get_cpu();
+
+#ifdef CONFIG_DEBUG_DCFLUSH
+	atomic_inc(&dcpage_flushes);
+#endif
+	data0 = 0;
+	pg_addr = page_address(page);
+	if (tlb_type == spitfire) {
+		data0 = ((u64)&xcall_flush_dcache_page_spitfire);
+		if (page_mapping(page) != NULL)
+			data0 |= ((u64)1 << 32);
+	} else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
+#ifdef DCACHE_ALIASING_POSSIBLE
+		data0 = ((u64)&xcall_flush_dcache_page_cheetah);
+#endif
+	}
+	if (data0) {
+		xcall_deliver(data0, __pa(pg_addr),
+			      (u64) pg_addr, &cpu_online_map);
+#ifdef CONFIG_DEBUG_DCFLUSH
+		atomic_inc(&dcpage_flushes_xcall);
+#endif
+	}
+	__local_flush_dcache_page(page);
+
+	put_cpu();
+}
+
+void smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)
+{
+	struct mm_struct *mm;
+	unsigned long flags;
+
+	clear_softint(1 << irq);
+
+	/* See if we need to allocate a new TLB context because
+	 * the version of the one we are using is now out of date.
+	 */
+	mm = current->active_mm;
+	if (unlikely(!mm || (mm == &init_mm)))
+		return;
+
+	spin_lock_irqsave(&mm->context.lock, flags);
+
+	if (unlikely(!CTX_VALID(mm->context)))
+		get_new_mmu_context(mm);
+
+	spin_unlock_irqrestore(&mm->context.lock, flags);
+
+	load_secondary_context(mm);
+	__flush_tlb_mm(CTX_HWBITS(mm->context),
+		       SECONDARY_CONTEXT);
+}
+
+void smp_new_mmu_context_version(void)
+{
+	smp_cross_call(&xcall_new_mmu_context_version, 0, 0, 0);
+}
+
+#ifdef CONFIG_KGDB
+void kgdb_roundup_cpus(unsigned long flags)
+{
+	smp_cross_call(&xcall_kgdb_capture, 0, 0, 0);
+}
+#endif
+
+void smp_fetch_global_regs(void)
+{
+	smp_cross_call(&xcall_fetch_glob_regs, 0, 0, 0);
+}
+
+/* We know that the window frames of the user have been flushed
+ * to the stack before we get here because all callers of us
+ * are flush_tlb_*() routines, and these run after flush_cache_*()
+ * which performs the flushw.
+ *
+ * The SMP TLB coherency scheme we use works as follows:
+ *
+ * 1) mm->cpu_vm_mask is a bit mask of which cpus an address
+ *    space has (potentially) executed on, this is the heuristic
+ *    we use to avoid doing cross calls.
+ *
+ *    Also, for flushing from kswapd and also for clones, we
+ *    use cpu_vm_mask as the list of cpus to make run the TLB.
+ *
+ * 2) TLB context numbers are shared globally across all processors
+ *    in the system, this allows us to play several games to avoid
+ *    cross calls.
+ *
+ *    One invariant is that when a cpu switches to a process, and
+ *    that processes tsk->active_mm->cpu_vm_mask does not have the
+ *    current cpu's bit set, that tlb context is flushed locally.
+ *
+ *    If the address space is non-shared (ie. mm->count == 1) we avoid
+ *    cross calls when we want to flush the currently running process's
+ *    tlb state.  This is done by clearing all cpu bits except the current
+ *    processor's in current->active_mm->cpu_vm_mask and performing the
+ *    flush locally only.  This will force any subsequent cpus which run
+ *    this task to flush the context from the local tlb if the process
+ *    migrates to another cpu (again).
+ *
+ * 3) For shared address spaces (threads) and swapping we bite the
+ *    bullet for most cases and perform the cross call (but only to
+ *    the cpus listed in cpu_vm_mask).
+ *
+ *    The performance gain from "optimizing" away the cross call for threads is
+ *    questionable (in theory the big win for threads is the massive sharing of
+ *    address space state across processors).
+ */
+
+/* This currently is only used by the hugetlb arch pre-fault
+ * hook on UltraSPARC-III+ and later when changing the pagesize
+ * bits of the context register for an address space.
+ */
+void smp_flush_tlb_mm(struct mm_struct *mm)
+{
+	u32 ctx = CTX_HWBITS(mm->context);
+	int cpu = get_cpu();
+
+	if (atomic_read(&mm->mm_users) == 1) {
+		mm->cpu_vm_mask = cpumask_of_cpu(cpu);
+		goto local_flush_and_out;
+	}
+
+	smp_cross_call_masked(&xcall_flush_tlb_mm,
+			      ctx, 0, 0,
+			      &mm->cpu_vm_mask);
+
+local_flush_and_out:
+	__flush_tlb_mm(ctx, SECONDARY_CONTEXT);
+
+	put_cpu();
+}
+
+void smp_flush_tlb_pending(struct mm_struct *mm, unsigned long nr, unsigned long *vaddrs)
+{
+	u32 ctx = CTX_HWBITS(mm->context);
+	int cpu = get_cpu();
+
+	if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1)
+		mm->cpu_vm_mask = cpumask_of_cpu(cpu);
+	else
+		smp_cross_call_masked(&xcall_flush_tlb_pending,
+				      ctx, nr, (unsigned long) vaddrs,
+				      &mm->cpu_vm_mask);
+
+	__flush_tlb_pending(ctx, nr, vaddrs);
+
+	put_cpu();
+}
+
+void smp_flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+	start &= PAGE_MASK;
+	end    = PAGE_ALIGN(end);
+	if (start != end) {
+		smp_cross_call(&xcall_flush_tlb_kernel_range,
+			       0, start, end);
+
+		__flush_tlb_kernel_range(start, end);
+	}
+}
+
+/* CPU capture. */
+/* #define CAPTURE_DEBUG */
+extern unsigned long xcall_capture;
+
+static atomic_t smp_capture_depth = ATOMIC_INIT(0);
+static atomic_t smp_capture_registry = ATOMIC_INIT(0);
+static unsigned long penguins_are_doing_time;
+
+void smp_capture(void)
+{
+	int result = atomic_add_ret(1, &smp_capture_depth);
+
+	if (result == 1) {
+		int ncpus = num_online_cpus();
+
+#ifdef CAPTURE_DEBUG
+		printk("CPU[%d]: Sending penguins to jail...",
+		       smp_processor_id());
+#endif
+		penguins_are_doing_time = 1;
+		atomic_inc(&smp_capture_registry);
+		smp_cross_call(&xcall_capture, 0, 0, 0);
+		while (atomic_read(&smp_capture_registry) != ncpus)
+			rmb();
+#ifdef CAPTURE_DEBUG
+		printk("done\n");
+#endif
+	}
+}
+
+void smp_release(void)
+{
+	if (atomic_dec_and_test(&smp_capture_depth)) {
+#ifdef CAPTURE_DEBUG
+		printk("CPU[%d]: Giving pardon to "
+		       "imprisoned penguins\n",
+		       smp_processor_id());
+#endif
+		penguins_are_doing_time = 0;
+		membar_safe("#StoreLoad");
+		atomic_dec(&smp_capture_registry);
+	}
+}
+
+/* Imprisoned penguins run with %pil == PIL_NORMAL_MAX, but PSTATE_IE
+ * set, so they can service tlb flush xcalls...
+ */
+extern void prom_world(int);
+
+void smp_penguin_jailcell(int irq, struct pt_regs *regs)
+{
+	clear_softint(1 << irq);
+
+	preempt_disable();
+
+	__asm__ __volatile__("flushw");
+	prom_world(1);
+	atomic_inc(&smp_capture_registry);
+	membar_safe("#StoreLoad");
+	while (penguins_are_doing_time)
+		rmb();
+	atomic_dec(&smp_capture_registry);
+	prom_world(0);
+
+	preempt_enable();
+}
+
+/* /proc/profile writes can call this, don't __init it please. */
+int setup_profiling_timer(unsigned int multiplier)
+{
+	return -EINVAL;
+}
+
+void __init smp_prepare_cpus(unsigned int max_cpus)
+{
+}
+
+void __devinit smp_prepare_boot_cpu(void)
+{
+}
+
+void __init smp_setup_processor_id(void)
+{
+	if (tlb_type == spitfire)
+		xcall_deliver_impl = spitfire_xcall_deliver;
+	else if (tlb_type == cheetah || tlb_type == cheetah_plus)
+		xcall_deliver_impl = cheetah_xcall_deliver;
+	else
+		xcall_deliver_impl = hypervisor_xcall_deliver;
+}
+
+void __devinit smp_fill_in_sib_core_maps(void)
+{
+	unsigned int i;
+
+	for_each_present_cpu(i) {
+		unsigned int j;
+
+		cpus_clear(cpu_core_map[i]);
+		if (cpu_data(i).core_id == 0) {
+			cpu_set(i, cpu_core_map[i]);
+			continue;
+		}
+
+		for_each_present_cpu(j) {
+			if (cpu_data(i).core_id ==
+			    cpu_data(j).core_id)
+				cpu_set(j, cpu_core_map[i]);
+		}
+	}
+
+	for_each_present_cpu(i) {
+		unsigned int j;
+
+		cpus_clear(per_cpu(cpu_sibling_map, i));
+		if (cpu_data(i).proc_id == -1) {
+			cpu_set(i, per_cpu(cpu_sibling_map, i));
+			continue;
+		}
+
+		for_each_present_cpu(j) {
+			if (cpu_data(i).proc_id ==
+			    cpu_data(j).proc_id)
+				cpu_set(j, per_cpu(cpu_sibling_map, i));
+		}
+	}
+}
+
+int __cpuinit __cpu_up(unsigned int cpu)
+{
+	int ret = smp_boot_one_cpu(cpu);
+
+	if (!ret) {
+		cpu_set(cpu, smp_commenced_mask);
+		while (!cpu_isset(cpu, cpu_online_map))
+			mb();
+		if (!cpu_isset(cpu, cpu_online_map)) {
+			ret = -ENODEV;
+		} else {
+			/* On SUN4V, writes to %tick and %stick are
+			 * not allowed.
+			 */
+			if (tlb_type != hypervisor)
+				smp_synchronize_one_tick(cpu);
+		}
+	}
+	return ret;
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+void cpu_play_dead(void)
+{
+	int cpu = smp_processor_id();
+	unsigned long pstate;
+
+	idle_task_exit();
+
+	if (tlb_type == hypervisor) {
+		struct trap_per_cpu *tb = &trap_block[cpu];
+
+		sun4v_cpu_qconf(HV_CPU_QUEUE_CPU_MONDO,
+				tb->cpu_mondo_pa, 0);
+		sun4v_cpu_qconf(HV_CPU_QUEUE_DEVICE_MONDO,
+				tb->dev_mondo_pa, 0);
+		sun4v_cpu_qconf(HV_CPU_QUEUE_RES_ERROR,
+				tb->resum_mondo_pa, 0);
+		sun4v_cpu_qconf(HV_CPU_QUEUE_NONRES_ERROR,
+				tb->nonresum_mondo_pa, 0);
+	}
+
+	cpu_clear(cpu, smp_commenced_mask);
+	membar_safe("#Sync");
+
+	local_irq_disable();
+
+	__asm__ __volatile__(
+		"rdpr	%%pstate, %0\n\t"
+		"wrpr	%0, %1, %%pstate"
+		: "=r" (pstate)
+		: "i" (PSTATE_IE));
+
+	while (1)
+		barrier();
+}
+
+int __cpu_disable(void)
+{
+	int cpu = smp_processor_id();
+	cpuinfo_sparc *c;
+	int i;
+
+	for_each_cpu_mask(i, cpu_core_map[cpu])
+		cpu_clear(cpu, cpu_core_map[i]);
+	cpus_clear(cpu_core_map[cpu]);
+
+	for_each_cpu_mask(i, per_cpu(cpu_sibling_map, cpu))
+		cpu_clear(cpu, per_cpu(cpu_sibling_map, i));
+	cpus_clear(per_cpu(cpu_sibling_map, cpu));
+
+	c = &cpu_data(cpu);
+
+	c->core_id = 0;
+	c->proc_id = -1;
+
+	smp_wmb();
+
+	/* Make sure no interrupts point to this cpu.  */
+	fixup_irqs();
+
+	local_irq_enable();
+	mdelay(1);
+	local_irq_disable();
+
+	ipi_call_lock();
+	cpu_clear(cpu, cpu_online_map);
+	ipi_call_unlock();
+
+	return 0;
+}
+
+void __cpu_die(unsigned int cpu)
+{
+	int i;
+
+	for (i = 0; i < 100; i++) {
+		smp_rmb();
+		if (!cpu_isset(cpu, smp_commenced_mask))
+			break;
+		msleep(100);
+	}
+	if (cpu_isset(cpu, smp_commenced_mask)) {
+		printk(KERN_ERR "CPU %u didn't die...\n", cpu);
+	} else {
+#if defined(CONFIG_SUN_LDOMS)
+		unsigned long hv_err;
+		int limit = 100;
+
+		do {
+			hv_err = sun4v_cpu_stop(cpu);
+			if (hv_err == HV_EOK) {
+				cpu_clear(cpu, cpu_present_map);
+				break;
+			}
+		} while (--limit > 0);
+		if (limit <= 0) {
+			printk(KERN_ERR "sun4v_cpu_stop() fails err=%lu\n",
+			       hv_err);
+		}
+#endif
+	}
+}
+#endif
+
+void __init smp_cpus_done(unsigned int max_cpus)
+{
+}
+
+void smp_send_reschedule(int cpu)
+{
+	xcall_deliver((u64) &xcall_receive_signal, 0, 0,
+		      &cpumask_of_cpu(cpu));
+}
+
+void smp_receive_signal_client(int irq, struct pt_regs *regs)
+{
+	clear_softint(1 << irq);
+}
+
+/* This is a nop because we capture all other cpus
+ * anyways when making the PROM active.
+ */
+void smp_send_stop(void)
+{
+}
+
+unsigned long __per_cpu_base __read_mostly;
+unsigned long __per_cpu_shift __read_mostly;
+
+EXPORT_SYMBOL(__per_cpu_base);
+EXPORT_SYMBOL(__per_cpu_shift);
+
+void __init real_setup_per_cpu_areas(void)
+{
+	unsigned long paddr, goal, size, i;
+	char *ptr;
+
+	/* Copy section for each CPU (we discard the original) */
+	goal = PERCPU_ENOUGH_ROOM;
+
+	__per_cpu_shift = PAGE_SHIFT;
+	for (size = PAGE_SIZE; size < goal; size <<= 1UL)
+		__per_cpu_shift++;
+
+	paddr = lmb_alloc(size * NR_CPUS, PAGE_SIZE);
+	if (!paddr) {
+		prom_printf("Cannot allocate per-cpu memory.\n");
+		prom_halt();
+	}
+
+	ptr = __va(paddr);
+	__per_cpu_base = ptr - __per_cpu_start;
+
+	for (i = 0; i < NR_CPUS; i++, ptr += size)
+		memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
+
+	/* Setup %g5 for the boot cpu.  */
+	__local_per_cpu_offset = __per_cpu_offset(smp_processor_id());
+}
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms_32.c
index 32d11a5fe3a8..e1e97639231b 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms_32.c
@@ -61,7 +61,6 @@ extern void (*bzero_1page)(void *);
 extern void *__bzero(void *, size_t);
 extern void *__memscan_zero(void *, size_t);
 extern void *__memscan_generic(void *, int, size_t);
-extern int __memcmp(const void *, const void *, __kernel_size_t);
 extern int __strncmp(const char *, const char *, __kernel_size_t);
 
 extern int __ashrdi3(int, int);
@@ -118,10 +117,8 @@ EXPORT_SYMBOL(synchronize_irq);
 EXPORT_SYMBOL(__udelay);
 EXPORT_SYMBOL(__ndelay);
 EXPORT_SYMBOL(rtc_lock);
-#ifdef CONFIG_SUN_AUXIO
 EXPORT_SYMBOL(set_auxio);
 EXPORT_SYMBOL(get_auxio);
-#endif
 EXPORT_SYMBOL(io_remap_pfn_range);
 
 #ifndef CONFIG_SMP
@@ -209,7 +206,6 @@ EXPORT_SYMBOL(bzero_1page);
 EXPORT_SYMBOL(__bzero);
 EXPORT_SYMBOL(__memscan_zero);
 EXPORT_SYMBOL(__memscan_generic);
-EXPORT_SYMBOL(__memcmp);
 EXPORT_SYMBOL(__strncmp);
 EXPORT_SYMBOL(__memmove);
 
diff --git a/arch/sparc/kernel/sparc_ksyms_64.c b/arch/sparc/kernel/sparc_ksyms_64.c
new file mode 100644
index 000000000000..0133211ab634
--- /dev/null
+++ b/arch/sparc/kernel/sparc_ksyms_64.c
@@ -0,0 +1,284 @@
+/* arch/sparc64/kernel/sparc64_ksyms.c: Sparc64 specific ksyms support.
+ *
+ * Copyright (C) 1996, 2007 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
+ * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+/* Tell string.h we don't want memcpy etc. as cpp defines */
+#define EXPORT_SYMTAB_STROPS
+#define PROMLIB_INTERNAL
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/sched.h>
+#include <linux/in6.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/fs_struct.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/syscalls.h>
+#include <linux/percpu.h>
+#include <linux/init.h>
+#include <linux/rwsem.h>
+#include <net/compat.h>
+
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <asm/auxio.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/idprom.h>
+#include <asm/elf.h>
+#include <asm/head.h>
+#include <asm/smp.h>
+#include <asm/ptrace.h>
+#include <asm/uaccess.h>
+#include <asm/checksum.h>
+#include <asm/fpumacro.h>
+#include <asm/pgalloc.h>
+#include <asm/cacheflush.h>
+#ifdef CONFIG_SBUS
+#include <asm/dma.h>
+#endif
+#include <asm/ns87303.h>
+#include <asm/timer.h>
+#include <asm/cpudata.h>
+#include <asm/ftrace.h>
+#include <asm/hypervisor.h>
+
+struct poll {
+	int fd;
+	short events;
+	short revents;
+};
+
+extern void die_if_kernel(char *str, struct pt_regs *regs);
+extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+extern void *__bzero(void *, size_t);
+extern void *__memscan_zero(void *, size_t);
+extern void *__memscan_generic(void *, int, size_t);
+extern __kernel_size_t strlen(const char *);
+extern void sys_sigsuspend(void);
+extern int compat_sys_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
+extern int (*handle_mathemu)(struct pt_regs *, struct fpustate *);
+extern long sparc32_open(const char __user * filename, int flags, int mode);
+extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
+	unsigned long pfn, unsigned long size, pgprot_t prot);
+
+extern int __ashrdi3(int, int);
+
+extern int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs);
+
+extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
+extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
+		      unsigned long *);
+extern void xor_vis_4(unsigned long, unsigned long *, unsigned long *,
+		      unsigned long *, unsigned long *);
+extern void xor_vis_5(unsigned long, unsigned long *, unsigned long *,
+		      unsigned long *, unsigned long *, unsigned long *);
+
+extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
+extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
+			  unsigned long *);
+extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
+			  unsigned long *, unsigned long *);
+extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
+			  unsigned long *, unsigned long *, unsigned long *);
+
+/* Per-CPU information table */
+EXPORT_PER_CPU_SYMBOL(__cpu_data);
+
+/* used by various drivers */
+#ifdef CONFIG_SMP
+/* Out of line rw-locking implementation. */
+EXPORT_SYMBOL(__read_lock);
+EXPORT_SYMBOL(__read_unlock);
+EXPORT_SYMBOL(__write_lock);
+EXPORT_SYMBOL(__write_unlock);
+EXPORT_SYMBOL(__write_trylock);
+#endif /* CONFIG_SMP */
+
+#ifdef CONFIG_MCOUNT
+EXPORT_SYMBOL(_mcount);
+#endif
+
+EXPORT_SYMBOL(sparc64_get_clock_tick);
+
+/* RW semaphores */
+EXPORT_SYMBOL(__down_read);
+EXPORT_SYMBOL(__down_read_trylock);
+EXPORT_SYMBOL(__down_write);
+EXPORT_SYMBOL(__down_write_trylock);
+EXPORT_SYMBOL(__up_read);
+EXPORT_SYMBOL(__up_write);
+EXPORT_SYMBOL(__downgrade_write);
+
+/* Atomic counter implementation. */
+EXPORT_SYMBOL(atomic_add);
+EXPORT_SYMBOL(atomic_add_ret);
+EXPORT_SYMBOL(atomic_sub);
+EXPORT_SYMBOL(atomic_sub_ret);
+EXPORT_SYMBOL(atomic64_add);
+EXPORT_SYMBOL(atomic64_add_ret);
+EXPORT_SYMBOL(atomic64_sub);
+EXPORT_SYMBOL(atomic64_sub_ret);
+
+/* Atomic bit operations. */
+EXPORT_SYMBOL(test_and_set_bit);
+EXPORT_SYMBOL(test_and_clear_bit);
+EXPORT_SYMBOL(test_and_change_bit);
+EXPORT_SYMBOL(set_bit);
+EXPORT_SYMBOL(clear_bit);
+EXPORT_SYMBOL(change_bit);
+
+EXPORT_SYMBOL(__flushw_user);
+
+EXPORT_SYMBOL(tlb_type);
+EXPORT_SYMBOL(sun4v_chip_type);
+EXPORT_SYMBOL(get_fb_unmapped_area);
+EXPORT_SYMBOL(flush_icache_range);
+
+EXPORT_SYMBOL(flush_dcache_page);
+#ifdef DCACHE_ALIASING_POSSIBLE
+EXPORT_SYMBOL(__flush_dcache_range);
+#endif
+
+EXPORT_SYMBOL(sun4v_niagara_getperf);
+EXPORT_SYMBOL(sun4v_niagara_setperf);
+EXPORT_SYMBOL(sun4v_niagara2_getperf);
+EXPORT_SYMBOL(sun4v_niagara2_setperf);
+
+EXPORT_SYMBOL(auxio_set_led);
+EXPORT_SYMBOL(auxio_set_lte);
+#ifdef CONFIG_SBUS
+EXPORT_SYMBOL(sbus_set_sbus64);
+#endif
+EXPORT_SYMBOL(outsb);
+EXPORT_SYMBOL(outsw);
+EXPORT_SYMBOL(outsl);
+EXPORT_SYMBOL(insb);
+EXPORT_SYMBOL(insw);
+EXPORT_SYMBOL(insl);
+#ifdef CONFIG_PCI
+EXPORT_SYMBOL(pci_alloc_consistent);
+EXPORT_SYMBOL(pci_free_consistent);
+EXPORT_SYMBOL(pci_map_single);
+EXPORT_SYMBOL(pci_unmap_single);
+EXPORT_SYMBOL(pci_map_sg);
+EXPORT_SYMBOL(pci_unmap_sg);
+EXPORT_SYMBOL(pci_dma_sync_single_for_cpu);
+EXPORT_SYMBOL(pci_dma_sync_sg_for_cpu);
+EXPORT_SYMBOL(pci_dma_supported);
+#endif
+
+/* I/O device mmaping on Sparc64. */
+EXPORT_SYMBOL(io_remap_pfn_range);
+
+EXPORT_SYMBOL(dump_fpu);
+
+/* math-emu wants this */
+EXPORT_SYMBOL(die_if_kernel);
+
+/* Kernel thread creation. */
+EXPORT_SYMBOL(kernel_thread);
+
+/* prom symbols */
+EXPORT_SYMBOL(idprom);
+EXPORT_SYMBOL(prom_root_node);
+EXPORT_SYMBOL(prom_getchild);
+EXPORT_SYMBOL(prom_getsibling);
+EXPORT_SYMBOL(prom_searchsiblings);
+EXPORT_SYMBOL(prom_firstprop);
+EXPORT_SYMBOL(prom_nextprop);
+EXPORT_SYMBOL(prom_getproplen);
+EXPORT_SYMBOL(prom_getproperty);
+EXPORT_SYMBOL(prom_node_has_property);
+EXPORT_SYMBOL(prom_setprop);
+EXPORT_SYMBOL(saved_command_line);
+EXPORT_SYMBOL(prom_finddevice);
+EXPORT_SYMBOL(prom_feval);
+EXPORT_SYMBOL(prom_getbool);
+EXPORT_SYMBOL(prom_getstring);
+EXPORT_SYMBOL(prom_getint);
+EXPORT_SYMBOL(prom_getintdefault);
+EXPORT_SYMBOL(__prom_getchild);
+EXPORT_SYMBOL(__prom_getsibling);
+
+/* sparc library symbols */
+EXPORT_SYMBOL(strlen);
+EXPORT_SYMBOL(__strlen_user);
+EXPORT_SYMBOL(__strnlen_user);
+
+/* Special internal versions of library functions. */
+EXPORT_SYMBOL(_clear_page);
+EXPORT_SYMBOL(clear_user_page);
+EXPORT_SYMBOL(copy_user_page);
+EXPORT_SYMBOL(__bzero);
+EXPORT_SYMBOL(__memscan_zero);
+EXPORT_SYMBOL(__memscan_generic);
+EXPORT_SYMBOL(__memset);
+
+EXPORT_SYMBOL(csum_partial);
+EXPORT_SYMBOL(csum_partial_copy_nocheck);
+EXPORT_SYMBOL(__csum_partial_copy_from_user);
+EXPORT_SYMBOL(__csum_partial_copy_to_user);
+EXPORT_SYMBOL(ip_fast_csum);
+
+/* Moving data to/from/in userspace. */
+EXPORT_SYMBOL(___copy_to_user);
+EXPORT_SYMBOL(___copy_from_user);
+EXPORT_SYMBOL(___copy_in_user);
+EXPORT_SYMBOL(copy_to_user_fixup);
+EXPORT_SYMBOL(copy_from_user_fixup);
+EXPORT_SYMBOL(copy_in_user_fixup);
+EXPORT_SYMBOL(__strncpy_from_user);
+EXPORT_SYMBOL(__clear_user);
+
+/* Various address conversion macros use this. */
+EXPORT_SYMBOL(sparc64_valid_addr_bitmap);
+
+/* No version information on this, heavily used in inline asm,
+ * and will always be 'void __ret_efault(void)'.
+ */
+EXPORT_SYMBOL(__ret_efault);
+
+/* No version information on these, as gcc produces such symbols. */
+EXPORT_SYMBOL(memcmp);
+EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(memset);
+EXPORT_SYMBOL(memmove);
+EXPORT_SYMBOL(strncmp);
+
+void VISenter(void);
+/* RAID code needs this */
+EXPORT_SYMBOL(VISenter);
+
+/* for input/keybdev */
+EXPORT_SYMBOL(sun_do_break);
+EXPORT_SYMBOL(stop_a_enabled);
+
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+EXPORT_SYMBOL(do_BUG);
+#endif
+
+/* for ns8703 */
+EXPORT_SYMBOL(ns87303_lock);
+
+EXPORT_SYMBOL(tick_ops);
+
+EXPORT_SYMBOL(xor_vis_2);
+EXPORT_SYMBOL(xor_vis_3);
+EXPORT_SYMBOL(xor_vis_4);
+EXPORT_SYMBOL(xor_vis_5);
+
+EXPORT_SYMBOL(xor_niagara_2);
+EXPORT_SYMBOL(xor_niagara_3);
+EXPORT_SYMBOL(xor_niagara_4);
+EXPORT_SYMBOL(xor_niagara_5);
+
+EXPORT_SYMBOL_GPL(real_hard_smp_processor_id);
diff --git a/arch/sparc/kernel/spiterrs.S b/arch/sparc/kernel/spiterrs.S
new file mode 100644
index 000000000000..c357e40ffd01
--- /dev/null
+++ b/arch/sparc/kernel/spiterrs.S
@@ -0,0 +1,245 @@
+	/* We need to carefully read the error status, ACK the errors,
+	 * prevent recursive traps, and pass the information on to C
+	 * code for logging.
+	 *
+	 * We pass the AFAR in as-is, and we encode the status
+	 * information as described in asm-sparc64/sfafsr.h
+	 */
+	.type		__spitfire_access_error,#function
+__spitfire_access_error:
+	/* Disable ESTATE error reporting so that we do not take
+	 * recursive traps and RED state the processor.
+	 */
+	stxa		%g0, [%g0] ASI_ESTATE_ERROR_EN
+	membar		#Sync
+
+	mov		UDBE_UE, %g1
+	ldxa		[%g0] ASI_AFSR, %g4	! Get AFSR
+
+	/* __spitfire_cee_trap branches here with AFSR in %g4 and
+	 * UDBE_CE in %g1.  It only clears ESTATE_ERR_CE in the ESTATE
+	 * Error Enable register.
+	 */
+__spitfire_cee_trap_continue:
+	ldxa		[%g0] ASI_AFAR, %g5	! Get AFAR
+
+	rdpr		%tt, %g3
+	and		%g3, 0x1ff, %g3		! Paranoia
+	sllx		%g3, SFSTAT_TRAP_TYPE_SHIFT, %g3
+	or		%g4, %g3, %g4
+	rdpr		%tl, %g3
+	cmp		%g3, 1
+	mov		1, %g3
+	bleu		%xcc, 1f
+	 sllx		%g3, SFSTAT_TL_GT_ONE_SHIFT, %g3
+
+	or		%g4, %g3, %g4
+
+	/* Read in the UDB error register state, clearing the sticky
+	 * error bits as-needed.  We only clear them if the UE bit is
+	 * set.  Likewise, __spitfire_cee_trap below will only do so
+	 * if the CE bit is set.
+	 *
+	 * NOTE: UltraSparc-I/II have high and low UDB error
+	 *       registers, corresponding to the two UDB units
+	 *       present on those chips.  UltraSparc-IIi only
+	 *       has a single UDB, called "SDB" in the manual.
+	 *       For IIi the upper UDB register always reads
+	 *       as zero so for our purposes things will just
+	 *       work with the checks below.
+	 */
+1:	ldxa		[%g0] ASI_UDBH_ERROR_R, %g3
+	and		%g3, 0x3ff, %g7		! Paranoia
+	sllx		%g7, SFSTAT_UDBH_SHIFT, %g7
+	or		%g4, %g7, %g4
+	andcc		%g3, %g1, %g3		! UDBE_UE or UDBE_CE
+	be,pn		%xcc, 1f
+	 nop
+	stxa		%g3, [%g0] ASI_UDB_ERROR_W
+	membar		#Sync
+
+1:	mov		0x18, %g3
+	ldxa		[%g3] ASI_UDBL_ERROR_R, %g3
+	and		%g3, 0x3ff, %g7		! Paranoia
+	sllx		%g7, SFSTAT_UDBL_SHIFT, %g7
+	or		%g4, %g7, %g4
+	andcc		%g3, %g1, %g3		! UDBE_UE or UDBE_CE
+	be,pn		%xcc, 1f
+	 nop
+	mov		0x18, %g7
+	stxa		%g3, [%g7] ASI_UDB_ERROR_W
+	membar		#Sync
+
+1:	/* Ok, now that we've latched the error state, clear the
+	 * sticky bits in the AFSR.
+	 */
+	stxa		%g4, [%g0] ASI_AFSR
+	membar		#Sync
+
+	rdpr		%tl, %g2
+	cmp		%g2, 1
+	rdpr		%pil, %g2
+	bleu,pt		%xcc, 1f
+	 wrpr		%g0, PIL_NORMAL_MAX, %pil
+
+	ba,pt		%xcc, etraptl1
+	 rd		%pc, %g7
+
+	ba,pt		%xcc, 2f
+	 nop
+
+1:	ba,pt		%xcc, etrap_irq
+	 rd		%pc, %g7
+
+2:
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call	trace_hardirqs_off
+	 nop
+#endif
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		spitfire_access_error
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		__spitfire_access_error,.-__spitfire_access_error
+
+	/* This is the trap handler entry point for ECC correctable
+	 * errors.  They are corrected, but we listen for the trap so
+	 * that the event can be logged.
+	 *
+	 * Disrupting errors are either:
+	 * 1) single-bit ECC errors during UDB reads to system
+	 *    memory
+	 * 2) data parity errors during write-back events
+	 *
+	 * As far as I can make out from the manual, the CEE trap is
+	 * only for correctable errors during memory read accesses by
+	 * the front-end of the processor.
+	 *
+	 * The code below is only for trap level 1 CEE events, as it
+	 * is the only situation where we can safely record and log.
+	 * For trap level >1 we just clear the CE bit in the AFSR and
+	 * return.
+	 *
+	 * This is just like __spiftire_access_error above, but it
+	 * specifically handles correctable errors.  If an
+	 * uncorrectable error is indicated in the AFSR we will branch
+	 * directly above to __spitfire_access_error to handle it
+	 * instead.  Uncorrectable therefore takes priority over
+	 * correctable, and the error logging C code will notice this
+	 * case by inspecting the trap type.
+	 */
+	.type		__spitfire_cee_trap,#function
+__spitfire_cee_trap:
+	ldxa		[%g0] ASI_AFSR, %g4	! Get AFSR
+	mov		1, %g3
+	sllx		%g3, SFAFSR_UE_SHIFT, %g3
+	andcc		%g4, %g3, %g0		! Check for UE
+	bne,pn		%xcc, __spitfire_access_error
+	 nop
+
+	/* Ok, in this case we only have a correctable error.
+	 * Indicate we only wish to capture that state in register
+	 * %g1, and we only disable CE error reporting unlike UE
+	 * handling which disables all errors.
+	 */
+	ldxa		[%g0] ASI_ESTATE_ERROR_EN, %g3
+	andn		%g3, ESTATE_ERR_CE, %g3
+	stxa		%g3, [%g0] ASI_ESTATE_ERROR_EN
+	membar		#Sync
+
+	/* Preserve AFSR in %g4, indicate UDB state to capture in %g1 */
+	ba,pt		%xcc, __spitfire_cee_trap_continue
+	 mov		UDBE_CE, %g1
+	.size		__spitfire_cee_trap,.-__spitfire_cee_trap
+
+	.type		__spitfire_data_access_exception_tl1,#function
+__spitfire_data_access_exception_tl1:
+	rdpr		%pstate, %g4
+	wrpr		%g4, PSTATE_MG|PSTATE_AG, %pstate
+	mov		TLB_SFSR, %g3
+	mov		DMMU_SFAR, %g5
+	ldxa		[%g3] ASI_DMMU, %g4	! Get SFSR
+	ldxa		[%g5] ASI_DMMU, %g5	! Get SFAR
+	stxa		%g0, [%g3] ASI_DMMU	! Clear SFSR.FaultValid bit
+	membar		#Sync
+	rdpr		%tt, %g3
+	cmp		%g3, 0x80		! first win spill/fill trap
+	blu,pn		%xcc, 1f
+	 cmp		%g3, 0xff		! last win spill/fill trap
+	bgu,pn		%xcc, 1f
+	 nop
+	ba,pt		%xcc, winfix_dax
+	 rdpr		%tpc, %g3
+1:	sethi		%hi(109f), %g7
+	ba,pt		%xcc, etraptl1
+109:	 or		%g7, %lo(109b), %g7
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		spitfire_data_access_exception_tl1
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		__spitfire_data_access_exception_tl1,.-__spitfire_data_access_exception_tl1
+
+	.type		__spitfire_data_access_exception,#function
+__spitfire_data_access_exception:
+	rdpr		%pstate, %g4
+	wrpr		%g4, PSTATE_MG|PSTATE_AG, %pstate
+	mov		TLB_SFSR, %g3
+	mov		DMMU_SFAR, %g5
+	ldxa		[%g3] ASI_DMMU, %g4	! Get SFSR
+	ldxa		[%g5] ASI_DMMU, %g5	! Get SFAR
+	stxa		%g0, [%g3] ASI_DMMU	! Clear SFSR.FaultValid bit
+	membar		#Sync
+	sethi		%hi(109f), %g7
+	ba,pt		%xcc, etrap
+109:	 or		%g7, %lo(109b), %g7
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		spitfire_data_access_exception
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		__spitfire_data_access_exception,.-__spitfire_data_access_exception
+
+	.type		__spitfire_insn_access_exception_tl1,#function
+__spitfire_insn_access_exception_tl1:
+	rdpr		%pstate, %g4
+	wrpr		%g4, PSTATE_MG|PSTATE_AG, %pstate
+	mov		TLB_SFSR, %g3
+	ldxa		[%g3] ASI_IMMU, %g4	! Get SFSR
+	rdpr		%tpc, %g5		! IMMU has no SFAR, use TPC
+	stxa		%g0, [%g3] ASI_IMMU	! Clear FaultValid bit
+	membar		#Sync
+	sethi		%hi(109f), %g7
+	ba,pt		%xcc, etraptl1
+109:	 or		%g7, %lo(109b), %g7
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		spitfire_insn_access_exception_tl1
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		__spitfire_insn_access_exception_tl1,.-__spitfire_insn_access_exception_tl1
+
+	.type		__spitfire_insn_access_exception,#function
+__spitfire_insn_access_exception:
+	rdpr		%pstate, %g4
+	wrpr		%g4, PSTATE_MG|PSTATE_AG, %pstate
+	mov		TLB_SFSR, %g3
+	ldxa		[%g3] ASI_IMMU, %g4	! Get SFSR
+	rdpr		%tpc, %g5		! IMMU has no SFAR, use TPC
+	stxa		%g0, [%g3] ASI_IMMU	! Clear FaultValid bit
+	membar		#Sync
+	sethi		%hi(109f), %g7
+	ba,pt		%xcc, etrap
+109:	 or		%g7, %lo(109b), %g7
+	mov		%l4, %o1
+	mov		%l5, %o2
+	call		spitfire_insn_access_exception
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+	.size		__spitfire_insn_access_exception,.-__spitfire_insn_access_exception
diff --git a/arch/sparc/kernel/sstate.c b/arch/sparc/kernel/sstate.c
new file mode 100644
index 000000000000..8cdbe5946b43
--- /dev/null
+++ b/arch/sparc/kernel/sstate.c
@@ -0,0 +1,127 @@
+/* sstate.c: System soft state support.
+ *
+ * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/init.h>
+
+#include <asm/hypervisor.h>
+#include <asm/spitfire.h>
+#include <asm/oplib.h>
+#include <asm/head.h>
+#include <asm/io.h>
+
+static int hv_supports_soft_state;
+
+static unsigned long kimage_addr_to_ra(const char *p)
+{
+	unsigned long val = (unsigned long) p;
+
+	return kern_base + (val - KERNBASE);
+}
+
+static void do_set_sstate(unsigned long state, const char *msg)
+{
+	unsigned long err;
+
+	if (!hv_supports_soft_state)
+		return;
+
+	err = sun4v_mach_set_soft_state(state, kimage_addr_to_ra(msg));
+	if (err) {
+		printk(KERN_WARNING "SSTATE: Failed to set soft-state to "
+		       "state[%lx] msg[%s], err=%lu\n",
+		       state, msg, err);
+	}
+}
+
+static const char booting_msg[32] __attribute__((aligned(32))) =
+	"Linux booting";
+static const char running_msg[32] __attribute__((aligned(32))) =
+	"Linux running";
+static const char halting_msg[32] __attribute__((aligned(32))) =
+	"Linux halting";
+static const char poweroff_msg[32] __attribute__((aligned(32))) =
+	"Linux powering off";
+static const char rebooting_msg[32] __attribute__((aligned(32))) =
+	"Linux rebooting";
+static const char panicing_msg[32] __attribute__((aligned(32))) =
+	"Linux panicing";
+
+static int sstate_reboot_call(struct notifier_block *np, unsigned long type, void *_unused)
+{
+	const char *msg;
+
+	switch (type) {
+	case SYS_DOWN:
+	default:
+		msg = rebooting_msg;
+		break;
+
+	case SYS_HALT:
+		msg = halting_msg;
+		break;
+
+	case SYS_POWER_OFF:
+		msg = poweroff_msg;
+		break;
+	}
+
+	do_set_sstate(HV_SOFT_STATE_TRANSITION, msg);
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block sstate_reboot_notifier = {
+	.notifier_call = sstate_reboot_call,
+};
+
+static int sstate_panic_event(struct notifier_block *n, unsigned long event, void *ptr)
+{
+	do_set_sstate(HV_SOFT_STATE_TRANSITION, panicing_msg);
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block sstate_panic_block = {
+	.notifier_call	=	sstate_panic_event,
+	.priority	=	INT_MAX,
+};
+
+static int __init sstate_init(void)
+{
+	unsigned long major, minor;
+
+	if (tlb_type != hypervisor)
+		return 0;
+
+	major = 1;
+	minor = 0;
+	if (sun4v_hvapi_register(HV_GRP_SOFT_STATE, major, &minor))
+		return 0;
+
+	hv_supports_soft_state = 1;
+
+	prom_sun4v_guest_soft_state();
+
+	do_set_sstate(HV_SOFT_STATE_TRANSITION, booting_msg);
+
+	atomic_notifier_chain_register(&panic_notifier_list,
+				       &sstate_panic_block);
+	register_reboot_notifier(&sstate_reboot_notifier);
+
+	return 0;
+}
+
+core_initcall(sstate_init);
+
+static int __init sstate_running(void)
+{
+	do_set_sstate(HV_SOFT_STATE_NORMAL, running_msg);
+	return 0;
+}
+
+late_initcall(sstate_running);
diff --git a/arch/sparc/kernel/stacktrace.c b/arch/sparc/kernel/stacktrace.c
new file mode 100644
index 000000000000..acb12f673757
--- /dev/null
+++ b/arch/sparc/kernel/stacktrace.c
@@ -0,0 +1,64 @@
+#include <linux/sched.h>
+#include <linux/stacktrace.h>
+#include <linux/thread_info.h>
+#include <linux/module.h>
+#include <asm/ptrace.h>
+#include <asm/stacktrace.h>
+
+#include "kstack.h"
+
+static void __save_stack_trace(struct thread_info *tp,
+			       struct stack_trace *trace,
+			       bool skip_sched)
+{
+	unsigned long ksp, fp;
+
+	if (tp == current_thread_info()) {
+		stack_trace_flush();
+		__asm__ __volatile__("mov %%fp, %0" : "=r" (ksp));
+	} else {
+		ksp = tp->ksp;
+	}
+
+	fp = ksp + STACK_BIAS;
+	do {
+		struct sparc_stackf *sf;
+		struct pt_regs *regs;
+		unsigned long pc;
+
+		if (!kstack_valid(tp, fp))
+			break;
+
+		sf = (struct sparc_stackf *) fp;
+		regs = (struct pt_regs *) (sf + 1);
+
+		if (kstack_is_trap_frame(tp, regs)) {
+			if (!(regs->tstate & TSTATE_PRIV))
+				break;
+			pc = regs->tpc;
+			fp = regs->u_regs[UREG_I6] + STACK_BIAS;
+		} else {
+			pc = sf->callers_pc;
+			fp = (unsigned long)sf->fp + STACK_BIAS;
+		}
+
+		if (trace->skip > 0)
+			trace->skip--;
+		else if (!skip_sched || !in_sched_functions(pc))
+			trace->entries[trace->nr_entries++] = pc;
+	} while (trace->nr_entries < trace->max_entries);
+}
+
+void save_stack_trace(struct stack_trace *trace)
+{
+	__save_stack_trace(current_thread_info(), trace, false);
+}
+EXPORT_SYMBOL_GPL(save_stack_trace);
+
+void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
+{
+	struct thread_info *tp = task_thread_info(tsk);
+
+	__save_stack_trace(tp, trace, true);
+}
+EXPORT_SYMBOL_GPL(save_stack_trace_tsk);
diff --git a/arch/sparc/kernel/starfire.c b/arch/sparc/kernel/starfire.c
new file mode 100644
index 000000000000..060d0f3a6151
--- /dev/null
+++ b/arch/sparc/kernel/starfire.c
@@ -0,0 +1,116 @@
+/*
+ * starfire.c: Starfire/E10000 support.
+ *
+ * Copyright (C) 1998 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2000 Anton Blanchard (anton@samba.org)
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include <asm/page.h>
+#include <asm/oplib.h>
+#include <asm/smp.h>
+#include <asm/upa.h>
+#include <asm/starfire.h>
+
+/*
+ * A few places around the kernel check this to see if
+ * they need to call us to do things in a Starfire specific
+ * way.
+ */
+int this_is_starfire = 0;
+
+void check_if_starfire(void)
+{
+	int ssnode = prom_finddevice("/ssp-serial");
+	if (ssnode != 0 && ssnode != -1)
+		this_is_starfire = 1;
+}
+
+int starfire_hard_smp_processor_id(void)
+{
+	return upa_readl(0x1fff40000d0UL);
+}
+
+/*
+ * Each Starfire board has 32 registers which perform translation
+ * and delivery of traditional interrupt packets into the extended
+ * Starfire hardware format.  Essentially UPAID's now have 2 more
+ * bits than in all previous Sun5 systems.
+ */
+struct starfire_irqinfo {
+	unsigned long imap_slots[32];
+	unsigned long tregs[32];
+	struct starfire_irqinfo *next;
+	int upaid, hwmid;
+};
+
+static struct starfire_irqinfo *sflist = NULL;
+
+/* Beam me up Scott(McNeil)y... */
+void starfire_hookup(int upaid)
+{
+	struct starfire_irqinfo *p;
+	unsigned long treg_base, hwmid, i;
+
+	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	if (!p) {
+		prom_printf("starfire_hookup: No memory, this is insane.\n");
+		prom_halt();
+	}
+	treg_base = 0x100fc000000UL;
+	hwmid = ((upaid & 0x3c) << 1) |
+		((upaid & 0x40) >> 4) |
+		(upaid & 0x3);
+	p->hwmid = hwmid;
+	treg_base += (hwmid << 33UL);
+	treg_base += 0x200UL;
+	for (i = 0; i < 32; i++) {
+		p->imap_slots[i] = 0UL;
+		p->tregs[i] = treg_base + (i * 0x10UL);
+		/* Lets play it safe and not overwrite existing mappings */
+		if (upa_readl(p->tregs[i]) != 0)
+			p->imap_slots[i] = 0xdeadbeaf;
+	}
+	p->upaid = upaid;
+	p->next = sflist;
+	sflist = p;
+}
+
+unsigned int starfire_translate(unsigned long imap,
+				unsigned int upaid)
+{
+	struct starfire_irqinfo *p;
+	unsigned int bus_hwmid;
+	unsigned int i;
+
+	bus_hwmid = (((unsigned long)imap) >> 33) & 0x7f;
+	for (p = sflist; p != NULL; p = p->next)
+		if (p->hwmid == bus_hwmid)
+			break;
+	if (p == NULL) {
+		prom_printf("XFIRE: Cannot find irqinfo for imap %016lx\n",
+			    ((unsigned long)imap));
+		prom_halt();
+	}
+	for (i = 0; i < 32; i++) {
+		if (p->imap_slots[i] == imap ||
+		    p->imap_slots[i] == 0UL)
+			break;
+	}
+	if (i == 32) {
+		printk("starfire_translate: Are you kidding me?\n");
+		panic("Lucy in the sky....");
+	}
+	p->imap_slots[i] = imap;
+
+	/* map to real upaid */
+	upaid = (((upaid & 0x3c) << 1) |
+		 ((upaid & 0x40) >> 4) |
+		 (upaid & 0x3));
+
+	upa_writel(upaid, p->tregs[i]);
+
+	return i;
+}
diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c
index 5dc8a5769489..bc3adbf79c6a 100644
--- a/arch/sparc/kernel/sun4c_irq.c
+++ b/arch/sparc/kernel/sun4c_irq.c
@@ -160,6 +160,7 @@ static void __init sun4c_init_timers(irq_handler_t counter_fn)
 	sun4c_timers = (void __iomem *) (unsigned long) addr[0];
 
 	irq = of_get_property(dp, "intr", NULL);
+	of_node_put(dp);
 	if (!irq) {
 		prom_printf("sun4c_init_timers: No intr property\n");
 		prom_halt();
@@ -200,6 +201,7 @@ void __init sun4c_init_IRQ(void)
 	}
 
 	addr = of_get_property(dp, "address", NULL);
+	of_node_put(dp);
 	if (!addr) {
 		prom_printf("sun4c_init_IRQ: No address property\n");
 		prom_halt();
diff --git a/arch/sparc/kernel/sun4d_irq.c b/arch/sparc/kernel/sun4d_irq.c
index d3cb76ce418b..3369fef5b4b3 100644
--- a/arch/sparc/kernel/sun4d_irq.c
+++ b/arch/sparc/kernel/sun4d_irq.c
@@ -40,6 +40,7 @@
 #include <asm/cacheflush.h>
 #include <asm/irq_regs.h>
 
+#include "kernel.h"
 #include "irq.h"
 
 /* If you trust current SCSI layer to handle different SCSI IRQs, enable this. I don't trust it... -jj */
@@ -58,7 +59,6 @@ static struct sun4d_timer_regs __iomem *sun4d_timers;
 #define TIMER_IRQ	10
 
 #define MAX_STATIC_ALLOC	4
-extern struct irqaction static_irqaction[MAX_STATIC_ALLOC];
 extern int static_irq_count;
 static unsigned char sbus_tid[32];
 
@@ -508,6 +508,7 @@ static void __init sun4d_init_timers(irq_handler_t counter_fn)
 	 * bootbus.
 	 */
 	reg = of_get_property(dp, "reg", NULL);
+	of_node_put(dp);
 	if (!reg) {
 		prom_printf("sun4d_init_timers: No reg property\n");
 		prom_halt();
diff --git a/arch/sparc/kernel/sun4m_irq.c b/arch/sparc/kernel/sun4m_irq.c
index f10317179ee6..301892e2d718 100644
--- a/arch/sparc/kernel/sun4m_irq.c
+++ b/arch/sparc/kernel/sun4m_irq.c
@@ -374,6 +374,7 @@ static void __init sun4m_init_timers(irq_handler_t counter_fn)
 	}
 
 	addr = of_get_property(dp, "address", &len);
+	of_node_put(dp);
 	if (!addr) {
 		printk(KERN_ERR "sun4m_init_timers: No 'address' prop.\n");
 		return;
@@ -437,6 +438,7 @@ void __init sun4m_init_IRQ(void)
 	}
 
 	addr = of_get_property(dp, "address", &len);
+	of_node_put(dp);
 	if (!addr) {
 		printk(KERN_ERR "sun4m_init_IRQ: No 'address' prop.\n");
 		return;
diff --git a/arch/sparc/kernel/sun4v_ivec.S b/arch/sparc/kernel/sun4v_ivec.S
new file mode 100644
index 000000000000..559bc5e9c199
--- /dev/null
+++ b/arch/sparc/kernel/sun4v_ivec.S
@@ -0,0 +1,341 @@
+/* sun4v_ivec.S: Sun4v interrupt vector handling.
+ *
+ * Copyright (C) 2006 <davem@davemloft.net>
+ */
+
+#include <asm/cpudata.h>
+#include <asm/intr_queue.h>
+#include <asm/pil.h>
+
+	.text
+	.align	32
+
+sun4v_cpu_mondo:
+	/* Head offset in %g2, tail offset in %g4.
+	 * If they are the same, no work.
+	 */
+	mov	INTRQ_CPU_MONDO_HEAD, %g2
+	ldxa	[%g2] ASI_QUEUE, %g2
+	mov	INTRQ_CPU_MONDO_TAIL, %g4
+	ldxa	[%g4] ASI_QUEUE, %g4
+	cmp	%g2, %g4
+	be,pn	%xcc, sun4v_cpu_mondo_queue_empty
+	 nop
+
+	/* Get &trap_block[smp_processor_id()] into %g4.  */
+	ldxa	[%g0] ASI_SCRATCHPAD, %g4
+	sub	%g4, TRAP_PER_CPU_FAULT_INFO, %g4
+
+	/* Get CPU mondo queue base phys address into %g7.  */
+	ldx	[%g4 + TRAP_PER_CPU_CPU_MONDO_PA], %g7
+
+	/* Now get the cross-call arguments and handler PC, same
+	 * layout as sun4u:
+	 *
+	 * 1st 64-bit word: low half is 32-bit PC, put into %g3 and jmpl to it
+	 *                  high half is context arg to MMU flushes, into %g5
+	 * 2nd 64-bit word: 64-bit arg, load into %g1
+	 * 3rd 64-bit word: 64-bit arg, load into %g7
+	 */
+	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g3
+	add	%g2, 0x8, %g2
+	srlx	%g3, 32, %g5
+	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g1
+	add	%g2, 0x8, %g2
+	srl	%g3, 0, %g3
+	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g7
+	add	%g2, 0x40 - 0x8 - 0x8, %g2
+
+	/* Update queue head pointer.  */
+	lduw	[%g4 + TRAP_PER_CPU_CPU_MONDO_QMASK], %g4
+	and	%g2, %g4, %g2
+
+	mov	INTRQ_CPU_MONDO_HEAD, %g4
+	stxa	%g2, [%g4] ASI_QUEUE
+	membar	#Sync
+
+	jmpl	%g3, %g0
+	 nop
+
+sun4v_cpu_mondo_queue_empty:
+	retry
+
+sun4v_dev_mondo:
+	/* Head offset in %g2, tail offset in %g4.  */
+	mov	INTRQ_DEVICE_MONDO_HEAD, %g2
+	ldxa	[%g2] ASI_QUEUE, %g2
+	mov	INTRQ_DEVICE_MONDO_TAIL, %g4
+	ldxa	[%g4] ASI_QUEUE, %g4
+	cmp	%g2, %g4
+	be,pn	%xcc, sun4v_dev_mondo_queue_empty
+	 nop
+
+	/* Get &trap_block[smp_processor_id()] into %g4.  */
+	ldxa	[%g0] ASI_SCRATCHPAD, %g4
+	sub	%g4, TRAP_PER_CPU_FAULT_INFO, %g4
+
+	/* Get DEV mondo queue base phys address into %g5.  */
+	ldx	[%g4 + TRAP_PER_CPU_DEV_MONDO_PA], %g5
+
+	/* Load IVEC into %g3.  */
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	add	%g2, 0x40, %g2
+
+	/* XXX There can be a full 64-byte block of data here.
+	 * XXX This is how we can get at MSI vector data.
+	 * XXX Current we do not capture this, but when we do we'll
+	 * XXX need to add a 64-byte storage area in the struct ino_bucket
+	 * XXX or the struct irq_desc.
+	 */
+
+	/* Update queue head pointer, this frees up some registers.  */
+	lduw	[%g4 + TRAP_PER_CPU_DEV_MONDO_QMASK], %g4
+	and	%g2, %g4, %g2
+
+	mov	INTRQ_DEVICE_MONDO_HEAD, %g4
+	stxa	%g2, [%g4] ASI_QUEUE
+	membar	#Sync
+
+	TRAP_LOAD_IRQ_WORK_PA(%g1, %g4)
+
+	/* For VIRQs, cookie is encoded as ~bucket_phys_addr  */
+	brlz,pt %g3, 1f
+	 xnor	%g3, %g0, %g4
+
+	/* Get __pa(&ivector_table[IVEC]) into %g4.  */
+	sethi	%hi(ivector_table_pa), %g4
+	ldx	[%g4 + %lo(ivector_table_pa)], %g4
+	sllx	%g3, 4, %g3
+	add	%g4, %g3, %g4
+
+1:	ldx	[%g1], %g2
+	stxa	%g2, [%g4] ASI_PHYS_USE_EC
+	stx	%g4, [%g1]
+
+	/* Signal the interrupt by setting (1 << pil) in %softint.  */
+	wr	%g0, 1 << PIL_DEVICE_IRQ, %set_softint
+
+sun4v_dev_mondo_queue_empty:
+	retry
+
+sun4v_res_mondo:
+	/* Head offset in %g2, tail offset in %g4.  */
+	mov	INTRQ_RESUM_MONDO_HEAD, %g2
+	ldxa	[%g2] ASI_QUEUE, %g2
+	mov	INTRQ_RESUM_MONDO_TAIL, %g4
+	ldxa	[%g4] ASI_QUEUE, %g4
+	cmp	%g2, %g4
+	be,pn	%xcc, sun4v_res_mondo_queue_empty
+	 nop
+
+	/* Get &trap_block[smp_processor_id()] into %g3.  */
+	ldxa	[%g0] ASI_SCRATCHPAD, %g3
+	sub	%g3, TRAP_PER_CPU_FAULT_INFO, %g3
+
+	/* Get RES mondo queue base phys address into %g5.  */
+	ldx	[%g3 + TRAP_PER_CPU_RESUM_MONDO_PA], %g5
+
+	/* Get RES kernel buffer base phys address into %g7.  */
+	ldx	[%g3 + TRAP_PER_CPU_RESUM_KBUF_PA], %g7
+
+	/* If the first word is non-zero, queue is full.  */
+	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g1
+	brnz,pn	%g1, sun4v_res_mondo_queue_full
+	 nop
+
+	lduw	[%g3 + TRAP_PER_CPU_RESUM_QMASK], %g4
+
+	/* Remember this entry's offset in %g1.  */
+	mov	%g2, %g1
+
+	/* Copy 64-byte queue entry into kernel buffer.  */
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+
+	/* Update queue head pointer.  */
+	and	%g2, %g4, %g2
+
+	mov	INTRQ_RESUM_MONDO_HEAD, %g4
+	stxa	%g2, [%g4] ASI_QUEUE
+	membar	#Sync
+
+	/* Disable interrupts and save register state so we can call
+	 * C code.  The etrap handling will leave %g4 in %l4 for us
+	 * when it's done.
+	 */
+	rdpr	%pil, %g2
+	wrpr	%g0, PIL_NORMAL_MAX, %pil
+	mov	%g1, %g4
+	ba,pt	%xcc, etrap_irq
+	 rd	%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	/* Log the event.  */
+	add	%sp, PTREGS_OFF, %o0
+	call	sun4v_resum_error
+	 mov	%l4, %o1
+
+	/* Return from trap.  */
+	ba,pt	%xcc, rtrap_irq
+	 nop
+
+sun4v_res_mondo_queue_empty:
+	retry
+
+sun4v_res_mondo_queue_full:
+	/* The queue is full, consolidate our damage by setting
+	 * the head equal to the tail.  We'll just trap again otherwise.
+	 * Call C code to log the event.
+	 */
+	mov	INTRQ_RESUM_MONDO_HEAD, %g2
+	stxa	%g4, [%g2] ASI_QUEUE
+	membar	#Sync
+
+	rdpr	%pil, %g2
+	wrpr	%g0, PIL_NORMAL_MAX, %pil
+	ba,pt	%xcc, etrap_irq
+	 rd	%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	call	sun4v_resum_overflow
+	 add	%sp, PTREGS_OFF, %o0
+
+	ba,pt	%xcc, rtrap_irq
+	 nop
+
+sun4v_nonres_mondo:
+	/* Head offset in %g2, tail offset in %g4.  */
+	mov	INTRQ_NONRESUM_MONDO_HEAD, %g2
+	ldxa	[%g2] ASI_QUEUE, %g2
+	mov	INTRQ_NONRESUM_MONDO_TAIL, %g4
+	ldxa	[%g4] ASI_QUEUE, %g4
+	cmp	%g2, %g4
+	be,pn	%xcc, sun4v_nonres_mondo_queue_empty
+	 nop
+
+	/* Get &trap_block[smp_processor_id()] into %g3.  */
+	ldxa	[%g0] ASI_SCRATCHPAD, %g3
+	sub	%g3, TRAP_PER_CPU_FAULT_INFO, %g3
+
+	/* Get RES mondo queue base phys address into %g5.  */
+	ldx	[%g3 + TRAP_PER_CPU_NONRESUM_MONDO_PA], %g5
+
+	/* Get RES kernel buffer base phys address into %g7.  */
+	ldx	[%g3 + TRAP_PER_CPU_NONRESUM_KBUF_PA], %g7
+
+	/* If the first word is non-zero, queue is full.  */
+	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g1
+	brnz,pn	%g1, sun4v_nonres_mondo_queue_full
+	 nop
+
+	lduw	[%g3 + TRAP_PER_CPU_NONRESUM_QMASK], %g4
+
+	/* Remember this entry's offset in %g1.  */
+	mov	%g2, %g1
+
+	/* Copy 64-byte queue entry into kernel buffer.  */
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
+	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
+	add	%g2, 0x08, %g2
+
+	/* Update queue head pointer.  */
+	and	%g2, %g4, %g2
+
+	mov	INTRQ_NONRESUM_MONDO_HEAD, %g4
+	stxa	%g2, [%g4] ASI_QUEUE
+	membar	#Sync
+
+	/* Disable interrupts and save register state so we can call
+	 * C code.  The etrap handling will leave %g4 in %l4 for us
+	 * when it's done.
+	 */
+	rdpr	%pil, %g2
+	wrpr	%g0, PIL_NORMAL_MAX, %pil
+	mov	%g1, %g4
+	ba,pt	%xcc, etrap_irq
+	 rd	%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	/* Log the event.  */
+	add	%sp, PTREGS_OFF, %o0
+	call	sun4v_nonresum_error
+	 mov	%l4, %o1
+
+	/* Return from trap.  */
+	ba,pt	%xcc, rtrap_irq
+	 nop
+
+sun4v_nonres_mondo_queue_empty:
+	retry
+
+sun4v_nonres_mondo_queue_full:
+	/* The queue is full, consolidate our damage by setting
+	 * the head equal to the tail.  We'll just trap again otherwise.
+	 * Call C code to log the event.
+	 */
+	mov	INTRQ_NONRESUM_MONDO_HEAD, %g2
+	stxa	%g4, [%g2] ASI_QUEUE
+	membar	#Sync
+
+	rdpr	%pil, %g2
+	wrpr	%g0, PIL_NORMAL_MAX, %pil
+	ba,pt	%xcc, etrap_irq
+	 rd	%pc, %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+	call		trace_hardirqs_off
+	 nop
+#endif
+	call	sun4v_nonresum_overflow
+	 add	%sp, PTREGS_OFF, %o0
+
+	ba,pt	%xcc, rtrap_irq
+	 nop
diff --git a/arch/sparc/kernel/sun4v_tlb_miss.S b/arch/sparc/kernel/sun4v_tlb_miss.S
new file mode 100644
index 000000000000..e1fbf8c75787
--- /dev/null
+++ b/arch/sparc/kernel/sun4v_tlb_miss.S
@@ -0,0 +1,428 @@
+/* sun4v_tlb_miss.S: Sun4v TLB miss handlers.
+ *
+ * Copyright (C) 2006 <davem@davemloft.net>
+ */
+
+	.text
+	.align	32
+
+	/* Load ITLB fault information into VADDR and CTX, using BASE.  */
+#define LOAD_ITLB_INFO(BASE, VADDR, CTX) \
+	ldx	[BASE + HV_FAULT_I_ADDR_OFFSET], VADDR; \
+	ldx	[BASE + HV_FAULT_I_CTX_OFFSET], CTX;
+
+	/* Load DTLB fault information into VADDR and CTX, using BASE.  */
+#define LOAD_DTLB_INFO(BASE, VADDR, CTX) \
+	ldx	[BASE + HV_FAULT_D_ADDR_OFFSET], VADDR; \
+	ldx	[BASE + HV_FAULT_D_CTX_OFFSET], CTX;
+
+	/* DEST = (VADDR >> 22)
+	 *
+	 * Branch to ZERO_CTX_LABEL if context is zero.
+	 */
+#define	COMPUTE_TAG_TARGET(DEST, VADDR, CTX, ZERO_CTX_LABEL) \
+	srlx	VADDR, 22, DEST; \
+	brz,pn	CTX, ZERO_CTX_LABEL; \
+	 nop;
+
+	/* Create TSB pointer.  This is something like:
+	 *
+	 * index_mask = (512 << (tsb_reg & 0x7UL)) - 1UL;
+	 * tsb_base = tsb_reg & ~0x7UL;
+	 * tsb_index = ((vaddr >> HASH_SHIFT) & tsb_mask);
+	 * tsb_ptr = tsb_base + (tsb_index * 16);
+	 */
+#define COMPUTE_TSB_PTR(TSB_PTR, VADDR, HASH_SHIFT, TMP1, TMP2) \
+	and	TSB_PTR, 0x7, TMP1;			\
+	mov	512, TMP2;				\
+	andn	TSB_PTR, 0x7, TSB_PTR;			\
+	sllx	TMP2, TMP1, TMP2;			\
+	srlx	VADDR, HASH_SHIFT, TMP1;		\
+	sub	TMP2, 1, TMP2;				\
+	and	TMP1, TMP2, TMP1;			\
+	sllx	TMP1, 4, TMP1;				\
+	add	TSB_PTR, TMP1, TSB_PTR;
+
+sun4v_itlb_miss:
+	/* Load MMU Miss base into %g2.  */
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	
+	/* Load UTSB reg into %g1.  */
+	mov	SCRATCHPAD_UTSBREG1, %g1
+	ldxa	[%g1] ASI_SCRATCHPAD, %g1
+
+	LOAD_ITLB_INFO(%g2, %g4, %g5)
+	COMPUTE_TAG_TARGET(%g6, %g4, %g5, kvmap_itlb_4v)
+	COMPUTE_TSB_PTR(%g1, %g4, PAGE_SHIFT, %g3, %g7)
+
+	/* Load TSB tag/pte into %g2/%g3 and compare the tag.  */
+	ldda	[%g1] ASI_QUAD_LDD_PHYS_4V, %g2
+	cmp	%g2, %g6
+	bne,a,pn %xcc, tsb_miss_page_table_walk
+	 mov	FAULT_CODE_ITLB, %g3
+	andcc	%g3, _PAGE_EXEC_4V, %g0
+	be,a,pn	%xcc, tsb_do_fault
+	 mov	FAULT_CODE_ITLB, %g3
+
+	/* We have a valid entry, make hypervisor call to load
+	 * I-TLB and return from trap.
+	 *
+	 * %g3:	PTE
+	 * %g4:	vaddr
+	 */
+sun4v_itlb_load:
+	ldxa	[%g0] ASI_SCRATCHPAD, %g6
+	mov	%o0, %g1		! save %o0
+	mov	%o1, %g2		! save %o1
+	mov	%o2, %g5		! save %o2
+	mov	%o3, %g7		! save %o3
+	mov	%g4, %o0		! vaddr
+	ldx	[%g6 + HV_FAULT_I_CTX_OFFSET], %o1	! ctx
+	mov	%g3, %o2		! PTE
+	mov	HV_MMU_IMMU, %o3	! flags
+	ta	HV_MMU_MAP_ADDR_TRAP
+	brnz,pn	%o0, sun4v_itlb_error
+	 mov	%g2, %o1		! restore %o1
+	mov	%g1, %o0		! restore %o0
+	mov	%g5, %o2		! restore %o2
+	mov	%g7, %o3		! restore %o3
+
+	retry
+
+sun4v_dtlb_miss:
+	/* Load MMU Miss base into %g2.  */
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	
+	/* Load UTSB reg into %g1.  */
+	mov	SCRATCHPAD_UTSBREG1, %g1
+	ldxa	[%g1] ASI_SCRATCHPAD, %g1
+
+	LOAD_DTLB_INFO(%g2, %g4, %g5)
+	COMPUTE_TAG_TARGET(%g6, %g4, %g5, kvmap_dtlb_4v)
+	COMPUTE_TSB_PTR(%g1, %g4, PAGE_SHIFT, %g3, %g7)
+
+	/* Load TSB tag/pte into %g2/%g3 and compare the tag.  */
+	ldda	[%g1] ASI_QUAD_LDD_PHYS_4V, %g2
+	cmp	%g2, %g6
+	bne,a,pn %xcc, tsb_miss_page_table_walk
+	 mov	FAULT_CODE_DTLB, %g3
+
+	/* We have a valid entry, make hypervisor call to load
+	 * D-TLB and return from trap.
+	 *
+	 * %g3:	PTE
+	 * %g4:	vaddr
+	 */
+sun4v_dtlb_load:
+	ldxa	[%g0] ASI_SCRATCHPAD, %g6
+	mov	%o0, %g1		! save %o0
+	mov	%o1, %g2		! save %o1
+	mov	%o2, %g5		! save %o2
+	mov	%o3, %g7		! save %o3
+	mov	%g4, %o0		! vaddr
+	ldx	[%g6 + HV_FAULT_D_CTX_OFFSET], %o1	! ctx
+	mov	%g3, %o2		! PTE
+	mov	HV_MMU_DMMU, %o3	! flags
+	ta	HV_MMU_MAP_ADDR_TRAP
+	brnz,pn	%o0, sun4v_dtlb_error
+	 mov	%g2, %o1		! restore %o1
+	mov	%g1, %o0		! restore %o0
+	mov	%g5, %o2		! restore %o2
+	mov	%g7, %o3		! restore %o3
+
+	retry
+
+sun4v_dtlb_prot:
+	SET_GL(1)
+
+	/* Load MMU Miss base into %g5.  */
+	ldxa	[%g0] ASI_SCRATCHPAD, %g5
+	
+	ldx	[%g5 + HV_FAULT_D_ADDR_OFFSET], %g5
+	rdpr	%tl, %g1
+	cmp	%g1, 1
+	bgu,pn	%xcc, winfix_trampoline
+	 mov	FAULT_CODE_DTLB | FAULT_CODE_WRITE, %g4
+	ba,pt	%xcc, sparc64_realfault_common
+	 nop
+
+	/* Called from trap table:
+	 * %g4:	vaddr
+	 * %g5:	context
+	 * %g6: TAG TARGET
+	 */
+sun4v_itsb_miss:
+	mov	SCRATCHPAD_UTSBREG1, %g1
+	ldxa	[%g1] ASI_SCRATCHPAD, %g1
+	brz,pn	%g5, kvmap_itlb_4v
+	 mov	FAULT_CODE_ITLB, %g3
+	ba,a,pt	%xcc, sun4v_tsb_miss_common
+
+	/* Called from trap table:
+	 * %g4:	vaddr
+	 * %g5:	context
+	 * %g6: TAG TARGET
+	 */
+sun4v_dtsb_miss:
+	mov	SCRATCHPAD_UTSBREG1, %g1
+	ldxa	[%g1] ASI_SCRATCHPAD, %g1
+	brz,pn	%g5, kvmap_dtlb_4v
+	 mov	FAULT_CODE_DTLB, %g3
+
+	/* fallthrough */
+
+sun4v_tsb_miss_common:
+	COMPUTE_TSB_PTR(%g1, %g4, PAGE_SHIFT, %g5, %g7)
+
+	sub	%g2, TRAP_PER_CPU_FAULT_INFO, %g2
+
+#ifdef CONFIG_HUGETLB_PAGE
+	mov	SCRATCHPAD_UTSBREG2, %g5
+	ldxa	[%g5] ASI_SCRATCHPAD, %g5
+	cmp	%g5, -1
+	be,pt	%xcc, 80f
+	 nop
+	COMPUTE_TSB_PTR(%g5, %g4, HPAGE_SHIFT, %g2, %g7)
+
+	/* That clobbered %g2, reload it.  */
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	sub	%g2, TRAP_PER_CPU_FAULT_INFO, %g2
+
+80:	stx	%g5, [%g2 + TRAP_PER_CPU_TSB_HUGE_TEMP]
+#endif
+
+	ba,pt	%xcc, tsb_miss_page_table_walk_sun4v_fastpath
+	 ldx	[%g2 + TRAP_PER_CPU_PGD_PADDR], %g7
+
+sun4v_itlb_error:
+	sethi	%hi(sun4v_err_itlb_vaddr), %g1
+	stx	%g4, [%g1 + %lo(sun4v_err_itlb_vaddr)]
+	sethi	%hi(sun4v_err_itlb_ctx), %g1
+	ldxa	[%g0] ASI_SCRATCHPAD, %g6
+	ldx	[%g6 + HV_FAULT_I_CTX_OFFSET], %o1
+	stx	%o1, [%g1 + %lo(sun4v_err_itlb_ctx)]
+	sethi	%hi(sun4v_err_itlb_pte), %g1
+	stx	%g3, [%g1 + %lo(sun4v_err_itlb_pte)]
+	sethi	%hi(sun4v_err_itlb_error), %g1
+	stx	%o0, [%g1 + %lo(sun4v_err_itlb_error)]
+
+	rdpr	%tl, %g4
+	cmp	%g4, 1
+	ble,pt	%icc, 1f
+	 sethi	%hi(2f), %g7
+	ba,pt	%xcc, etraptl1
+	 or	%g7, %lo(2f), %g7
+
+1:	ba,pt	%xcc, etrap
+2:	 or	%g7, %lo(2b), %g7
+	mov	%l4, %o1
+	call	sun4v_itlb_error_report
+	 add	%sp, PTREGS_OFF, %o0
+
+	/* NOTREACHED */
+
+sun4v_dtlb_error:
+	sethi	%hi(sun4v_err_dtlb_vaddr), %g1
+	stx	%g4, [%g1 + %lo(sun4v_err_dtlb_vaddr)]
+	sethi	%hi(sun4v_err_dtlb_ctx), %g1
+	ldxa	[%g0] ASI_SCRATCHPAD, %g6
+	ldx	[%g6 + HV_FAULT_D_CTX_OFFSET], %o1
+	stx	%o1, [%g1 + %lo(sun4v_err_dtlb_ctx)]
+	sethi	%hi(sun4v_err_dtlb_pte), %g1
+	stx	%g3, [%g1 + %lo(sun4v_err_dtlb_pte)]
+	sethi	%hi(sun4v_err_dtlb_error), %g1
+	stx	%o0, [%g1 + %lo(sun4v_err_dtlb_error)]
+
+	rdpr	%tl, %g4
+	cmp	%g4, 1
+	ble,pt	%icc, 1f
+	 sethi	%hi(2f), %g7
+	ba,pt	%xcc, etraptl1
+	 or	%g7, %lo(2f), %g7
+
+1:	ba,pt	%xcc, etrap
+2:	 or	%g7, %lo(2b), %g7
+	mov	%l4, %o1
+	call	sun4v_dtlb_error_report
+	 add	%sp, PTREGS_OFF, %o0
+
+	/* NOTREACHED */
+
+	/* Instruction Access Exception, tl0. */
+sun4v_iacc:
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	ldx	[%g2 + HV_FAULT_I_TYPE_OFFSET], %g3
+	ldx	[%g2 + HV_FAULT_I_ADDR_OFFSET], %g4
+	ldx	[%g2 + HV_FAULT_I_CTX_OFFSET], %g5
+	sllx	%g3, 16, %g3
+	or	%g5, %g3, %g5
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	mov	%l4, %o1
+	mov	%l5, %o2
+	call	sun4v_insn_access_exception
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+	/* Instruction Access Exception, tl1. */
+sun4v_iacc_tl1:
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	ldx	[%g2 + HV_FAULT_I_TYPE_OFFSET], %g3
+	ldx	[%g2 + HV_FAULT_I_ADDR_OFFSET], %g4
+	ldx	[%g2 + HV_FAULT_I_CTX_OFFSET], %g5
+	sllx	%g3, 16, %g3
+	or	%g5, %g3, %g5
+	ba,pt	%xcc, etraptl1
+	 rd	%pc, %g7
+	mov	%l4, %o1
+	mov	%l5, %o2
+	call	sun4v_insn_access_exception_tl1
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+	/* Data Access Exception, tl0. */
+sun4v_dacc:
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	ldx	[%g2 + HV_FAULT_D_TYPE_OFFSET], %g3
+	ldx	[%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
+	ldx	[%g2 + HV_FAULT_D_CTX_OFFSET], %g5
+	sllx	%g3, 16, %g3
+	or	%g5, %g3, %g5
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	mov	%l4, %o1
+	mov	%l5, %o2
+	call	sun4v_data_access_exception
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+	/* Data Access Exception, tl1. */
+sun4v_dacc_tl1:
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	ldx	[%g2 + HV_FAULT_D_TYPE_OFFSET], %g3
+	ldx	[%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
+	ldx	[%g2 + HV_FAULT_D_CTX_OFFSET], %g5
+	sllx	%g3, 16, %g3
+	or	%g5, %g3, %g5
+	ba,pt	%xcc, etraptl1
+	 rd	%pc, %g7
+	mov	%l4, %o1
+	mov	%l5, %o2
+	call	sun4v_data_access_exception_tl1
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+	/* Memory Address Unaligned.  */
+sun4v_mna:
+	/* Window fixup? */
+	rdpr	%tl, %g2
+	cmp	%g2, 1
+	ble,pt	%icc, 1f
+	 nop
+
+	SET_GL(1)
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	ldx	[%g2 + HV_FAULT_D_ADDR_OFFSET], %g5
+	mov	HV_FAULT_TYPE_UNALIGNED, %g3
+	ldx	[%g2 + HV_FAULT_D_CTX_OFFSET], %g4
+	sllx	%g3, 16, %g3
+	or	%g4, %g3, %g4
+	ba,pt	%xcc, winfix_mna
+	 rdpr	%tpc, %g3
+	/* not reached */
+
+1:	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	mov	HV_FAULT_TYPE_UNALIGNED, %g3
+	ldx	[%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
+	ldx	[%g2 + HV_FAULT_D_CTX_OFFSET], %g5
+	sllx	%g3, 16, %g3
+	or	%g5, %g3, %g5
+
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	mov	%l4, %o1
+	mov	%l5, %o2
+	call	sun4v_do_mna
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+	/* Privileged Action.  */
+sun4v_privact:
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	call	do_privact
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+	/* Unaligned ldd float, tl0. */
+sun4v_lddfmna:
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	ldx	[%g2 + HV_FAULT_D_TYPE_OFFSET], %g3
+	ldx	[%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
+	ldx	[%g2 + HV_FAULT_D_CTX_OFFSET], %g5
+	sllx	%g3, 16, %g3
+	or	%g5, %g3, %g5
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	mov	%l4, %o1
+	mov	%l5, %o2
+	call	handle_lddfmna
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+	/* Unaligned std float, tl0. */
+sun4v_stdfmna:
+	ldxa	[%g0] ASI_SCRATCHPAD, %g2
+	ldx	[%g2 + HV_FAULT_D_TYPE_OFFSET], %g3
+	ldx	[%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
+	ldx	[%g2 + HV_FAULT_D_CTX_OFFSET], %g5
+	sllx	%g3, 16, %g3
+	or	%g5, %g3, %g5
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	mov	%l4, %o1
+	mov	%l5, %o2
+	call	handle_stdfmna
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define SUN4V_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	sun4v_patch_tlb_handlers
+	.type	sun4v_patch_tlb_handlers,#function
+sun4v_patch_tlb_handlers:
+	SUN4V_DO_PATCH(tl0_iamiss, sun4v_itlb_miss)
+	SUN4V_DO_PATCH(tl1_iamiss, sun4v_itlb_miss)
+	SUN4V_DO_PATCH(tl0_damiss, sun4v_dtlb_miss)
+	SUN4V_DO_PATCH(tl1_damiss, sun4v_dtlb_miss)
+	SUN4V_DO_PATCH(tl0_daprot, sun4v_dtlb_prot)
+	SUN4V_DO_PATCH(tl1_daprot, sun4v_dtlb_prot)
+	SUN4V_DO_PATCH(tl0_iax, sun4v_iacc)
+	SUN4V_DO_PATCH(tl1_iax, sun4v_iacc_tl1)
+	SUN4V_DO_PATCH(tl0_dax, sun4v_dacc)
+	SUN4V_DO_PATCH(tl1_dax, sun4v_dacc_tl1)
+	SUN4V_DO_PATCH(tl0_mna, sun4v_mna)
+	SUN4V_DO_PATCH(tl1_mna, sun4v_mna)
+	SUN4V_DO_PATCH(tl0_lddfmna, sun4v_lddfmna)
+	SUN4V_DO_PATCH(tl0_stdfmna, sun4v_stdfmna)
+	SUN4V_DO_PATCH(tl0_privact, sun4v_privact)
+	retl
+	 nop
+	.size	sun4v_patch_tlb_handlers,.-sun4v_patch_tlb_handlers
diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S
new file mode 100644
index 000000000000..f061c4dda9ef
--- /dev/null
+++ b/arch/sparc/kernel/sys32.S
@@ -0,0 +1,367 @@
+/*
+ * sys32.S: I-cache tricks for 32-bit compatibility layer simple
+ *          conversions.
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Jakub Jelinek   (jj@ultra.linux.cz)
+ */
+
+#include <asm/errno.h>
+
+/* NOTE: call as jump breaks return stack, we have to avoid that */
+
+	.text
+
+#define SIGN1(STUB,SYSCALL,REG1) \
+	.align	32; \
+	.globl	STUB; \
+STUB:	sethi	%hi(SYSCALL), %g1; \
+	jmpl	%g1 + %lo(SYSCALL), %g0; \
+	sra	REG1, 0, REG1
+
+#define SIGN2(STUB,SYSCALL,REG1,REG2) \
+	.align	32; \
+	.globl	STUB; \
+STUB:	sethi	%hi(SYSCALL), %g1; \
+	sra	REG1, 0, REG1; \
+	jmpl	%g1 + %lo(SYSCALL), %g0; \
+	sra	REG2, 0, REG2
+
+#define SIGN3(STUB,SYSCALL,REG1,REG2,REG3) \
+	.align	32; \
+	.globl	STUB; \
+STUB:	sra	REG1, 0, REG1; \
+	sethi	%hi(SYSCALL), %g1; \
+	sra	REG2, 0, REG2; \
+	jmpl	%g1 + %lo(SYSCALL), %g0; \
+	sra	REG3, 0, REG3
+
+#define SIGN4(STUB,SYSCALL,REG1,REG2,REG3,REG4) \
+	.align	32; \
+	.globl	STUB; \
+STUB:	sra	REG1, 0, REG1; \
+	sethi	%hi(SYSCALL), %g1; \
+	sra	REG2, 0, REG2; \
+	sra	REG3, 0, REG3; \
+	jmpl	%g1 + %lo(SYSCALL), %g0; \
+	sra	REG4, 0, REG4
+
+SIGN1(sys32_exit, sparc_exit, %o0)
+SIGN1(sys32_exit_group, sys_exit_group, %o0)
+SIGN1(sys32_wait4, compat_sys_wait4, %o2)
+SIGN1(sys32_creat, sys_creat, %o1)
+SIGN1(sys32_mknod, sys_mknod, %o1)
+SIGN1(sys32_perfctr, sys_perfctr, %o0)
+SIGN1(sys32_umount, sys_umount, %o1)
+SIGN1(sys32_signal, sys_signal, %o0)
+SIGN1(sys32_access, sys_access, %o1)
+SIGN1(sys32_msync, sys_msync, %o2)
+SIGN2(sys32_reboot, sys_reboot, %o0, %o1)
+SIGN1(sys32_setitimer, compat_sys_setitimer, %o0)
+SIGN1(sys32_getitimer, compat_sys_getitimer, %o0)
+SIGN1(sys32_sethostname, sys_sethostname, %o1)
+SIGN1(sys32_swapon, sys_swapon, %o1)
+SIGN1(sys32_sigaction, compat_sys_sigaction, %o0)
+SIGN1(sys32_rt_sigaction, compat_sys_rt_sigaction, %o0)
+SIGN1(sys32_sigprocmask, compat_sys_sigprocmask, %o0)
+SIGN1(sys32_rt_sigprocmask, compat_sys_rt_sigprocmask, %o0)
+SIGN2(sys32_rt_sigqueueinfo, compat_sys_rt_sigqueueinfo, %o0, %o1)
+SIGN1(sys32_getrusage, compat_sys_getrusage, %o0)
+SIGN1(sys32_setxattr, sys_setxattr, %o4)
+SIGN1(sys32_lsetxattr, sys_lsetxattr, %o4)
+SIGN1(sys32_fsetxattr, sys_fsetxattr, %o4)
+SIGN1(sys32_fgetxattr, sys_fgetxattr, %o0)
+SIGN1(sys32_flistxattr, sys_flistxattr, %o0)
+SIGN1(sys32_fremovexattr, sys_fremovexattr, %o0)
+SIGN2(sys32_tkill, sys_tkill, %o0, %o1)
+SIGN1(sys32_epoll_create, sys_epoll_create, %o0)
+SIGN3(sys32_epoll_ctl, sys_epoll_ctl, %o0, %o1, %o2)
+SIGN3(sys32_epoll_wait, sys_epoll_wait, %o0, %o2, %o3)
+SIGN1(sys32_readahead, compat_sys_readahead, %o0)
+SIGN2(sys32_fadvise64, compat_sys_fadvise64, %o0, %o4)
+SIGN2(sys32_fadvise64_64, compat_sys_fadvise64_64, %o0, %o5)
+SIGN2(sys32_bdflush, sys_bdflush, %o0, %o1)
+SIGN1(sys32_mlockall, sys_mlockall, %o0)
+SIGN1(sys32_nfsservctl, compat_sys_nfsservctl, %o0)
+SIGN1(sys32_clock_nanosleep, compat_sys_clock_nanosleep, %o1)
+SIGN1(sys32_timer_settime, compat_sys_timer_settime, %o1)
+SIGN1(sys32_io_submit, compat_sys_io_submit, %o1)
+SIGN1(sys32_mq_open, compat_sys_mq_open, %o1)
+SIGN1(sys32_select, compat_sys_select, %o0)
+SIGN1(sys32_mkdir, sys_mkdir, %o1)
+SIGN3(sys32_futex, compat_sys_futex, %o1, %o2, %o5)
+SIGN1(sys32_sysfs, compat_sys_sysfs, %o0)
+SIGN2(sys32_sendfile, compat_sys_sendfile, %o0, %o1)
+SIGN2(sys32_sendfile64, compat_sys_sendfile64, %o0, %o1)
+SIGN1(sys32_prctl, sys_prctl, %o0)
+SIGN1(sys32_sched_rr_get_interval, compat_sys_sched_rr_get_interval, %o0)
+SIGN2(sys32_waitpid, sys_waitpid, %o0, %o2)
+SIGN1(sys32_getgroups, sys_getgroups, %o0)
+SIGN1(sys32_getpgid, sys_getpgid, %o0)
+SIGN2(sys32_getpriority, sys_getpriority, %o0, %o1)
+SIGN1(sys32_getsid, sys_getsid, %o0)
+SIGN2(sys32_kill, sys_kill, %o0, %o1)
+SIGN1(sys32_nice, sys_nice, %o0)
+SIGN1(sys32_lseek, sys_lseek, %o1)
+SIGN2(sys32_open, sparc32_open, %o1, %o2)
+SIGN1(sys32_readlink, sys_readlink, %o2)
+SIGN1(sys32_sched_get_priority_max, sys_sched_get_priority_max, %o0)
+SIGN1(sys32_sched_get_priority_min, sys_sched_get_priority_min, %o0)
+SIGN1(sys32_sched_getparam, sys_sched_getparam, %o0)
+SIGN1(sys32_sched_getscheduler, sys_sched_getscheduler, %o0)
+SIGN1(sys32_sched_setparam, sys_sched_setparam, %o0)
+SIGN2(sys32_sched_setscheduler, sys_sched_setscheduler, %o0, %o1)
+SIGN1(sys32_getdomainname, sys_getdomainname, %o1)
+SIGN1(sys32_setdomainname, sys_setdomainname, %o1)
+SIGN1(sys32_setgroups, sys_setgroups, %o0)
+SIGN2(sys32_setpgid, sys_setpgid, %o0, %o1)
+SIGN3(sys32_setpriority, sys_setpriority, %o0, %o1, %o2)
+SIGN1(sys32_ssetmask, sys_ssetmask, %o0)
+SIGN2(sys32_syslog, sys_syslog, %o0, %o2)
+SIGN1(sys32_umask, sys_umask, %o0)
+SIGN3(sys32_tgkill, sys_tgkill, %o0, %o1, %o2)
+SIGN1(sys32_sendto, sys_sendto, %o0)
+SIGN1(sys32_recvfrom, sys_recvfrom, %o0)
+SIGN3(sys32_socket, sys_socket, %o0, %o1, %o2)
+SIGN2(sys32_connect, sys_connect, %o0, %o2)
+SIGN2(sys32_bind, sys_bind, %o0, %o2)
+SIGN2(sys32_listen, sys_listen, %o0, %o1)
+SIGN1(sys32_recvmsg, compat_sys_recvmsg, %o0)
+SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0)
+SIGN2(sys32_shutdown, sys_shutdown, %o0, %o1)
+SIGN3(sys32_socketpair, sys_socketpair, %o0, %o1, %o2)
+SIGN1(sys32_getpeername, sys_getpeername, %o0)
+SIGN1(sys32_getsockname, sys_getsockname, %o0)
+SIGN2(sys32_ioprio_get, sys_ioprio_get, %o0, %o1)
+SIGN3(sys32_ioprio_set, sys_ioprio_set, %o0, %o1, %o2)
+SIGN2(sys32_splice, sys_splice, %o0, %o1)
+SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5)
+SIGN2(sys32_tee, sys_tee, %o0, %o1)
+SIGN1(sys32_vmsplice, compat_sys_vmsplice, %o0)
+
+	.globl		sys32_mmap2
+sys32_mmap2:
+	sethi		%hi(sys_mmap), %g1
+	jmpl		%g1 + %lo(sys_mmap), %g0
+	 sllx		%o5, 12, %o5
+
+	.align		32
+	.globl		sys32_socketcall
+sys32_socketcall:	/* %o0=call, %o1=args */
+	cmp		%o0, 1
+	bl,pn		%xcc, do_einval
+	 cmp		%o0, 18
+	bg,pn		%xcc, do_einval
+	 sub		%o0, 1, %o0
+	sllx		%o0, 5, %o0
+	sethi		%hi(__socketcall_table_begin), %g2
+	or		%g2, %lo(__socketcall_table_begin), %g2
+	jmpl		%g2 + %o0, %g0
+	 nop
+do_einval:
+	retl
+	 mov		-EINVAL, %o0
+
+	.align		32
+__socketcall_table_begin:
+
+	/* Each entry is exactly 32 bytes. */
+do_sys_socket: /* sys_socket(int, int, int) */
+1:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_socket), %g1
+2:	ldswa		[%o1 + 0x8] %asi, %o2
+	jmpl		%g1 + %lo(sys_socket), %g0
+3:	 ldswa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+do_sys_bind: /* sys_bind(int fd, struct sockaddr *, int) */
+4:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_bind), %g1
+5:	ldswa		[%o1 + 0x8] %asi, %o2
+	jmpl		%g1 + %lo(sys_bind), %g0
+6:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+do_sys_connect: /* sys_connect(int, struct sockaddr *, int) */
+7:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_connect), %g1
+8:	ldswa		[%o1 + 0x8] %asi, %o2
+	jmpl		%g1 + %lo(sys_connect), %g0
+9:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+do_sys_listen: /* sys_listen(int, int) */
+10:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_listen), %g1
+	jmpl		%g1 + %lo(sys_listen), %g0
+11:	 ldswa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+	nop
+do_sys_accept: /* sys_accept(int, struct sockaddr *, int *) */
+12:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_accept), %g1
+13:	lduwa		[%o1 + 0x8] %asi, %o2
+	jmpl		%g1 + %lo(sys_accept), %g0
+14:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+do_sys_getsockname: /* sys_getsockname(int, struct sockaddr *, int *) */
+15:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_getsockname), %g1
+16:	lduwa		[%o1 + 0x8] %asi, %o2
+	jmpl		%g1 + %lo(sys_getsockname), %g0
+17:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+do_sys_getpeername: /* sys_getpeername(int, struct sockaddr *, int *) */
+18:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_getpeername), %g1
+19:	lduwa		[%o1 + 0x8] %asi, %o2
+	jmpl		%g1 + %lo(sys_getpeername), %g0
+20:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+do_sys_socketpair: /* sys_socketpair(int, int, int, int *) */
+21:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_socketpair), %g1
+22:	ldswa		[%o1 + 0x8] %asi, %o2
+23:	lduwa		[%o1 + 0xc] %asi, %o3
+	jmpl		%g1 + %lo(sys_socketpair), %g0
+24:	 ldswa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+do_sys_send: /* sys_send(int, void *, size_t, unsigned int) */
+25:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_send), %g1
+26:	lduwa		[%o1 + 0x8] %asi, %o2
+27:	lduwa		[%o1 + 0xc] %asi, %o3
+	jmpl		%g1 + %lo(sys_send), %g0
+28:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+do_sys_recv: /* sys_recv(int, void *, size_t, unsigned int) */
+29:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_recv), %g1
+30:	lduwa		[%o1 + 0x8] %asi, %o2
+31:	lduwa		[%o1 + 0xc] %asi, %o3
+	jmpl		%g1 + %lo(sys_recv), %g0
+32:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+do_sys_sendto: /* sys_sendto(int, u32, compat_size_t, unsigned int, u32, int) */
+33:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_sendto), %g1
+34:	lduwa		[%o1 + 0x8] %asi, %o2
+35:	lduwa		[%o1 + 0xc] %asi, %o3
+36:	lduwa		[%o1 + 0x10] %asi, %o4
+37:	ldswa		[%o1 + 0x14] %asi, %o5
+	jmpl		%g1 + %lo(sys_sendto), %g0
+38:	 lduwa		[%o1 + 0x4] %asi, %o1
+do_sys_recvfrom: /* sys_recvfrom(int, u32, compat_size_t, unsigned int, u32, u32) */
+39:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_recvfrom), %g1
+40:	lduwa		[%o1 + 0x8] %asi, %o2
+41:	lduwa		[%o1 + 0xc] %asi, %o3
+42:	lduwa		[%o1 + 0x10] %asi, %o4
+43:	lduwa		[%o1 + 0x14] %asi, %o5
+	jmpl		%g1 + %lo(sys_recvfrom), %g0
+44:	 lduwa		[%o1 + 0x4] %asi, %o1
+do_sys_shutdown: /* sys_shutdown(int, int) */
+45:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_shutdown), %g1
+	jmpl		%g1 + %lo(sys_shutdown), %g0
+46:	 ldswa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+	nop
+do_sys_setsockopt: /* compat_sys_setsockopt(int, int, int, char *, int) */
+47:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(compat_sys_setsockopt), %g1
+48:	ldswa		[%o1 + 0x8] %asi, %o2
+49:	lduwa		[%o1 + 0xc] %asi, %o3
+50:	ldswa		[%o1 + 0x10] %asi, %o4
+	jmpl		%g1 + %lo(compat_sys_setsockopt), %g0
+51:	 ldswa		[%o1 + 0x4] %asi, %o1
+	nop
+do_sys_getsockopt: /* compat_sys_getsockopt(int, int, int, u32, u32) */
+52:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(compat_sys_getsockopt), %g1
+53:	ldswa		[%o1 + 0x8] %asi, %o2
+54:	lduwa		[%o1 + 0xc] %asi, %o3
+55:	lduwa		[%o1 + 0x10] %asi, %o4
+	jmpl		%g1 + %lo(compat_sys_getsockopt), %g0
+56:	 ldswa		[%o1 + 0x4] %asi, %o1
+	nop
+do_sys_sendmsg: /* compat_sys_sendmsg(int, struct compat_msghdr *, unsigned int) */
+57:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(compat_sys_sendmsg), %g1
+58:	lduwa		[%o1 + 0x8] %asi, %o2
+	jmpl		%g1 + %lo(compat_sys_sendmsg), %g0
+59:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int) */
+60:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(compat_sys_recvmsg), %g1
+61:	lduwa		[%o1 + 0x8] %asi, %o2
+	jmpl		%g1 + %lo(compat_sys_recvmsg), %g0
+62:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+	nop
+do_sys_accept4: /* sys_accept4(int, struct sockaddr *, int *, int) */
+63:	ldswa		[%o1 + 0x0] %asi, %o0
+	sethi		%hi(sys_accept4), %g1
+64:	lduwa		[%o1 + 0x8] %asi, %o2
+65:	ldswa		[%o1 + 0xc] %asi, %o3
+	jmpl		%g1 + %lo(sys_accept4), %g0
+66:	 lduwa		[%o1 + 0x4] %asi, %o1
+	nop
+	nop
+
+	.section	__ex_table,"a"
+	.align		4
+	.word		1b, __retl_efault, 2b, __retl_efault
+	.word		3b, __retl_efault, 4b, __retl_efault
+	.word		5b, __retl_efault, 6b, __retl_efault
+	.word		7b, __retl_efault, 8b, __retl_efault
+	.word		9b, __retl_efault, 10b, __retl_efault
+	.word		11b, __retl_efault, 12b, __retl_efault
+	.word		13b, __retl_efault, 14b, __retl_efault
+	.word		15b, __retl_efault, 16b, __retl_efault
+	.word		17b, __retl_efault, 18b, __retl_efault
+	.word		19b, __retl_efault, 20b, __retl_efault
+	.word		21b, __retl_efault, 22b, __retl_efault
+	.word		23b, __retl_efault, 24b, __retl_efault
+	.word		25b, __retl_efault, 26b, __retl_efault
+	.word		27b, __retl_efault, 28b, __retl_efault
+	.word		29b, __retl_efault, 30b, __retl_efault
+	.word		31b, __retl_efault, 32b, __retl_efault
+	.word		33b, __retl_efault, 34b, __retl_efault
+	.word		35b, __retl_efault, 36b, __retl_efault
+	.word		37b, __retl_efault, 38b, __retl_efault
+	.word		39b, __retl_efault, 40b, __retl_efault
+	.word		41b, __retl_efault, 42b, __retl_efault
+	.word		43b, __retl_efault, 44b, __retl_efault
+	.word		45b, __retl_efault, 46b, __retl_efault
+	.word		47b, __retl_efault, 48b, __retl_efault
+	.word		49b, __retl_efault, 50b, __retl_efault
+	.word		51b, __retl_efault, 52b, __retl_efault
+	.word		53b, __retl_efault, 54b, __retl_efault
+	.word		55b, __retl_efault, 56b, __retl_efault
+	.word		57b, __retl_efault, 58b, __retl_efault
+	.word		59b, __retl_efault, 60b, __retl_efault
+	.word		61b, __retl_efault, 62b, __retl_efault
+	.word		63b, __retl_efault, 64b, __retl_efault
+	.word		65b, __retl_efault, 66b, __retl_efault
+	.previous
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c
new file mode 100644
index 000000000000..e800503879e4
--- /dev/null
+++ b/arch/sparc/kernel/sys_sparc32.c
@@ -0,0 +1,682 @@
+/* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
+ *
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
+ *
+ * These routines maintain argument size conversion between 32bit and 64bit
+ * environment.
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/capability.h>
+#include <linux/fs.h> 
+#include <linux/mm.h> 
+#include <linux/file.h> 
+#include <linux/signal.h>
+#include <linux/resource.h>
+#include <linux/times.h>
+#include <linux/utsname.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/slab.h>
+#include <linux/uio.h>
+#include <linux/nfs_fs.h>
+#include <linux/quota.h>
+#include <linux/module.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/cache.h>
+#include <linux/nfsd/xdr.h>
+#include <linux/nfsd/syscall.h>
+#include <linux/poll.h>
+#include <linux/personality.h>
+#include <linux/stat.h>
+#include <linux/filter.h>
+#include <linux/highmem.h>
+#include <linux/highuid.h>
+#include <linux/mman.h>
+#include <linux/ipv6.h>
+#include <linux/in.h>
+#include <linux/icmpv6.h>
+#include <linux/syscalls.h>
+#include <linux/sysctl.h>
+#include <linux/binfmts.h>
+#include <linux/dnotify.h>
+#include <linux/security.h>
+#include <linux/compat.h>
+#include <linux/vfs.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/ptrace.h>
+
+#include <asm/types.h>
+#include <asm/uaccess.h>
+#include <asm/fpumacro.h>
+#include <asm/mmu_context.h>
+#include <asm/compat_signal.h>
+
+#ifdef CONFIG_SYSVIPC                                                        
+asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
+{
+	int version;
+
+	version = call >> 16; /* hack for backward compatibility */
+	call &= 0xffff;
+
+	switch (call) {
+	case SEMTIMEDOP:
+		if (fifth)
+			/* sign extend semid */
+			return compat_sys_semtimedop((int)first,
+						     compat_ptr(ptr), second,
+						     compat_ptr(fifth));
+		/* else fall through for normal semop() */
+	case SEMOP:
+		/* struct sembuf is the same on 32 and 64bit :)) */
+		/* sign extend semid */
+		return sys_semtimedop((int)first, compat_ptr(ptr), second,
+				      NULL);
+	case SEMGET:
+		/* sign extend key, nsems */
+		return sys_semget((int)first, (int)second, third);
+	case SEMCTL:
+		/* sign extend semid, semnum */
+		return compat_sys_semctl((int)first, (int)second, third,
+					 compat_ptr(ptr));
+
+	case MSGSND:
+		/* sign extend msqid */
+		return compat_sys_msgsnd((int)first, (int)second, third,
+					 compat_ptr(ptr));
+	case MSGRCV:
+		/* sign extend msqid, msgtyp */
+		return compat_sys_msgrcv((int)first, second, (int)fifth,
+					 third, version, compat_ptr(ptr));
+	case MSGGET:
+		/* sign extend key */
+		return sys_msgget((int)first, second);
+	case MSGCTL:
+		/* sign extend msqid */
+		return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
+
+	case SHMAT:
+		/* sign extend shmid */
+		return compat_sys_shmat((int)first, second, third, version,
+					compat_ptr(ptr));
+	case SHMDT:
+		return sys_shmdt(compat_ptr(ptr));
+	case SHMGET:
+		/* sign extend key_t */
+		return sys_shmget((int)first, second, third);
+	case SHMCTL:
+		/* sign extend shmid */
+		return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
+
+	default:
+		return -ENOSYS;
+	};
+
+	return -ENOSYS;
+}
+#endif
+
+asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
+{
+	if ((int)high < 0)
+		return -EINVAL;
+	else
+		return sys_truncate(path, (high << 32) | low);
+}
+
+asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
+{
+	if ((int)high < 0)
+		return -EINVAL;
+	else
+		return sys_ftruncate(fd, (high << 32) | low);
+}
+
+static int cp_compat_stat64(struct kstat *stat,
+			    struct compat_stat64 __user *statbuf)
+{
+	int err;
+
+	err  = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
+	err |= put_user(stat->ino, &statbuf->st_ino);
+	err |= put_user(stat->mode, &statbuf->st_mode);
+	err |= put_user(stat->nlink, &statbuf->st_nlink);
+	err |= put_user(stat->uid, &statbuf->st_uid);
+	err |= put_user(stat->gid, &statbuf->st_gid);
+	err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
+	err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
+	err |= put_user(stat->size, &statbuf->st_size);
+	err |= put_user(stat->blksize, &statbuf->st_blksize);
+	err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
+	err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
+	err |= put_user(stat->blocks, &statbuf->st_blocks);
+	err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
+	err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
+	err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
+	err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
+	err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
+	err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
+	err |= put_user(0, &statbuf->__unused4);
+	err |= put_user(0, &statbuf->__unused5);
+
+	return err;
+}
+
+asmlinkage long compat_sys_stat64(char __user * filename,
+		struct compat_stat64 __user *statbuf)
+{
+	struct kstat stat;
+	int error = vfs_stat(filename, &stat);
+
+	if (!error)
+		error = cp_compat_stat64(&stat, statbuf);
+	return error;
+}
+
+asmlinkage long compat_sys_lstat64(char __user * filename,
+		struct compat_stat64 __user *statbuf)
+{
+	struct kstat stat;
+	int error = vfs_lstat(filename, &stat);
+
+	if (!error)
+		error = cp_compat_stat64(&stat, statbuf);
+	return error;
+}
+
+asmlinkage long compat_sys_fstat64(unsigned int fd,
+		struct compat_stat64 __user * statbuf)
+{
+	struct kstat stat;
+	int error = vfs_fstat(fd, &stat);
+
+	if (!error)
+		error = cp_compat_stat64(&stat, statbuf);
+	return error;
+}
+
+asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
+		struct compat_stat64 __user * statbuf, int flag)
+{
+	struct kstat stat;
+	int error = -EINVAL;
+
+	if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+		goto out;
+
+	if (flag & AT_SYMLINK_NOFOLLOW)
+		error = vfs_lstat_fd(dfd, filename, &stat);
+	else
+		error = vfs_stat_fd(dfd, filename, &stat);
+
+	if (!error)
+		error = cp_compat_stat64(&stat, statbuf);
+
+out:
+	return error;
+}
+
+asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
+{
+	return sys_sysfs(option, arg1, arg2);
+}
+
+asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
+{
+	struct timespec t;
+	int ret;
+	mm_segment_t old_fs = get_fs ();
+	
+	set_fs (KERNEL_DS);
+	ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
+	set_fs (old_fs);
+	if (put_compat_timespec(&t, interval))
+		return -EFAULT;
+	return ret;
+}
+
+asmlinkage long compat_sys_rt_sigprocmask(int how,
+					  compat_sigset_t __user *set,
+					  compat_sigset_t __user *oset,
+					  compat_size_t sigsetsize)
+{
+	sigset_t s;
+	compat_sigset_t s32;
+	int ret;
+	mm_segment_t old_fs = get_fs();
+	
+	if (set) {
+		if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
+			return -EFAULT;
+		switch (_NSIG_WORDS) {
+		case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
+		case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
+		case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
+		case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
+		}
+	}
+	set_fs (KERNEL_DS);
+	ret = sys_rt_sigprocmask(how,
+				 set ? (sigset_t __user *) &s : NULL,
+				 oset ? (sigset_t __user *) &s : NULL,
+				 sigsetsize);
+	set_fs (old_fs);
+	if (ret) return ret;
+	if (oset) {
+		switch (_NSIG_WORDS) {
+		case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
+		case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
+		case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
+		case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
+		}
+		if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
+			return -EFAULT;
+	}
+	return 0;
+}
+
+asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
+				    compat_size_t sigsetsize)
+{
+	sigset_t s;
+	compat_sigset_t s32;
+	int ret;
+	mm_segment_t old_fs = get_fs();
+		
+	set_fs (KERNEL_DS);
+	ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
+	set_fs (old_fs);
+	if (!ret) {
+		switch (_NSIG_WORDS) {
+		case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
+		case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
+		case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
+		case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
+		}
+		if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
+			return -EFAULT;
+	}
+	return ret;
+}
+
+asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
+					   struct compat_siginfo __user *uinfo)
+{
+	siginfo_t info;
+	int ret;
+	mm_segment_t old_fs = get_fs();
+	
+	if (copy_siginfo_from_user32(&info, uinfo))
+		return -EFAULT;
+
+	set_fs (KERNEL_DS);
+	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
+	set_fs (old_fs);
+	return ret;
+}
+
+asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
+				     struct old_sigaction32 __user *oact)
+{
+        struct k_sigaction new_ka, old_ka;
+        int ret;
+
+	WARN_ON_ONCE(sig >= 0);
+	sig = -sig;
+
+        if (act) {
+		compat_old_sigset_t mask;
+		u32 u_handler, u_restorer;
+		
+		ret = get_user(u_handler, &act->sa_handler);
+		new_ka.sa.sa_handler =  compat_ptr(u_handler);
+		ret |= __get_user(u_restorer, &act->sa_restorer);
+		new_ka.sa.sa_restorer = compat_ptr(u_restorer);
+		ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+		ret |= __get_user(mask, &act->sa_mask);
+		if (ret)
+			return ret;
+		new_ka.ka_restorer = NULL;
+		siginitset(&new_ka.sa.sa_mask, mask);
+        }
+
+        ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
+		ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
+		ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+		ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+        }
+
+	return ret;
+}
+
+asmlinkage long compat_sys_rt_sigaction(int sig,
+					struct sigaction32 __user *act,
+					struct sigaction32 __user *oact,
+					void __user *restorer,
+					compat_size_t sigsetsize)
+{
+        struct k_sigaction new_ka, old_ka;
+        int ret;
+	compat_sigset_t set32;
+
+        /* XXX: Don't preclude handling different sized sigset_t's.  */
+        if (sigsetsize != sizeof(compat_sigset_t))
+                return -EINVAL;
+
+        if (act) {
+		u32 u_handler, u_restorer;
+
+		new_ka.ka_restorer = restorer;
+		ret = get_user(u_handler, &act->sa_handler);
+		new_ka.sa.sa_handler =  compat_ptr(u_handler);
+		ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
+		switch (_NSIG_WORDS) {
+		case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
+		case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
+		case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
+		case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
+		}
+		ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+		ret |= __get_user(u_restorer, &act->sa_restorer);
+		new_ka.sa.sa_restorer = compat_ptr(u_restorer);
+                if (ret)
+                	return -EFAULT;
+	}
+
+	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		switch (_NSIG_WORDS) {
+		case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
+		case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
+		case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
+		case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
+		}
+		ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
+		ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
+		ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+		ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
+		if (ret)
+			ret = -EFAULT;
+        }
+
+        return ret;
+}
+
+/*
+ * sparc32_execve() executes a new program after the asm stub has set
+ * things up for us.  This should basically do what I want it to.
+ */
+asmlinkage long sparc32_execve(struct pt_regs *regs)
+{
+	int error, base = 0;
+	char *filename;
+
+	/* User register window flush is done by entry.S */
+
+	/* Check for indirect call. */
+	if ((u32)regs->u_regs[UREG_G1] == 0)
+		base = 1;
+
+	filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
+	error = PTR_ERR(filename);
+	if (IS_ERR(filename))
+		goto out;
+
+	error = compat_do_execve(filename,
+				 compat_ptr(regs->u_regs[base + UREG_I1]),
+				 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
+
+	putname(filename);
+
+	if (!error) {
+		fprs_write(0);
+		current_thread_info()->xfsr[0] = 0;
+		current_thread_info()->fpsaved[0] = 0;
+		regs->tstate &= ~TSTATE_PEF;
+	}
+out:
+	return error;
+}
+
+#ifdef CONFIG_MODULES
+
+asmlinkage long sys32_init_module(void __user *umod, u32 len,
+				  const char __user *uargs)
+{
+	return sys_init_module(umod, len, uargs);
+}
+
+asmlinkage long sys32_delete_module(const char __user *name_user,
+				    unsigned int flags)
+{
+	return sys_delete_module(name_user, flags);
+}
+
+#else /* CONFIG_MODULES */
+
+asmlinkage long sys32_init_module(const char __user *name_user,
+				  struct module __user *mod_user)
+{
+	return -ENOSYS;
+}
+
+asmlinkage long sys32_delete_module(const char __user *name_user)
+{
+	return -ENOSYS;
+}
+
+#endif  /* CONFIG_MODULES */
+
+asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
+					char __user *ubuf,
+					compat_size_t count,
+					unsigned long poshi,
+					unsigned long poslo)
+{
+	return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
+}
+
+asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
+					 char __user *ubuf,
+					 compat_size_t count,
+					 unsigned long poshi,
+					 unsigned long poslo)
+{
+	return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
+}
+
+asmlinkage long compat_sys_readahead(int fd,
+				     unsigned long offhi,
+				     unsigned long offlo,
+				     compat_size_t count)
+{
+	return sys_readahead(fd, (offhi << 32) | offlo, count);
+}
+
+long compat_sys_fadvise64(int fd,
+			  unsigned long offhi,
+			  unsigned long offlo,
+			  compat_size_t len, int advice)
+{
+	return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
+}
+
+long compat_sys_fadvise64_64(int fd,
+			     unsigned long offhi, unsigned long offlo,
+			     unsigned long lenhi, unsigned long lenlo,
+			     int advice)
+{
+	return sys_fadvise64_64(fd,
+				(offhi << 32) | offlo,
+				(lenhi << 32) | lenlo,
+				advice);
+}
+
+asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
+				    compat_off_t __user *offset,
+				    compat_size_t count)
+{
+	mm_segment_t old_fs = get_fs();
+	int ret;
+	off_t of;
+	
+	if (offset && get_user(of, offset))
+		return -EFAULT;
+		
+	set_fs(KERNEL_DS);
+	ret = sys_sendfile(out_fd, in_fd,
+			   offset ? (off_t __user *) &of : NULL,
+			   count);
+	set_fs(old_fs);
+	
+	if (offset && put_user(of, offset))
+		return -EFAULT;
+		
+	return ret;
+}
+
+asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
+				      compat_loff_t __user *offset,
+				      compat_size_t count)
+{
+	mm_segment_t old_fs = get_fs();
+	int ret;
+	loff_t lof;
+	
+	if (offset && get_user(lof, offset))
+		return -EFAULT;
+		
+	set_fs(KERNEL_DS);
+	ret = sys_sendfile64(out_fd, in_fd,
+			     offset ? (loff_t __user *) &lof : NULL,
+			     count);
+	set_fs(old_fs);
+	
+	if (offset && put_user(lof, offset))
+		return -EFAULT;
+		
+	return ret;
+}
+
+/* This is just a version for 32-bit applications which does
+ * not force O_LARGEFILE on.
+ */
+
+asmlinkage long sparc32_open(const char __user *filename,
+			     int flags, int mode)
+{
+	return do_sys_open(AT_FDCWD, filename, flags, mode);
+}
+
+extern unsigned long do_mremap(unsigned long addr,
+	unsigned long old_len, unsigned long new_len,
+	unsigned long flags, unsigned long new_addr);
+                
+asmlinkage unsigned long sys32_mremap(unsigned long addr,
+	unsigned long old_len, unsigned long new_len,
+	unsigned long flags, u32 __new_addr)
+{
+	unsigned long ret = -EINVAL;
+	unsigned long new_addr = __new_addr;
+
+	if (unlikely(sparc_mmap_check(addr, old_len)))
+		goto out;
+	if (unlikely(sparc_mmap_check(new_addr, new_len)))
+		goto out;
+	down_write(&current->mm->mmap_sem);
+	ret = do_mremap(addr, old_len, new_len, flags, new_addr);
+	up_write(&current->mm->mmap_sem);
+out:
+	return ret;       
+}
+
+struct __sysctl_args32 {
+	u32 name;
+	int nlen;
+	u32 oldval;
+	u32 oldlenp;
+	u32 newval;
+	u32 newlen;
+	u32 __unused[4];
+};
+
+asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
+{
+#ifndef CONFIG_SYSCTL_SYSCALL
+	return -ENOSYS;
+#else
+	struct __sysctl_args32 tmp;
+	int error;
+	size_t oldlen, __user *oldlenp = NULL;
+	unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
+
+	if (copy_from_user(&tmp, args, sizeof(tmp)))
+		return -EFAULT;
+
+	if (tmp.oldval && tmp.oldlenp) {
+		/* Duh, this is ugly and might not work if sysctl_args
+		   is in read-only memory, but do_sysctl does indirectly
+		   a lot of uaccess in both directions and we'd have to
+		   basically copy the whole sysctl.c here, and
+		   glibc's __sysctl uses rw memory for the structure
+		   anyway.  */
+		if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
+		    put_user(oldlen, (size_t __user *)addr))
+			return -EFAULT;
+		oldlenp = (size_t __user *)addr;
+	}
+
+	lock_kernel();
+	error = do_sysctl((int __user *)(unsigned long) tmp.name,
+			  tmp.nlen,
+			  (void __user *)(unsigned long) tmp.oldval,
+			  oldlenp,
+			  (void __user *)(unsigned long) tmp.newval,
+			  tmp.newlen);
+	unlock_kernel();
+	if (oldlenp) {
+		if (!error) {
+			if (get_user(oldlen, (size_t __user *)addr) ||
+			    put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
+				error = -EFAULT;
+		}
+		if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
+			error = -EFAULT;
+	}
+	return error;
+#endif
+}
+
+long sys32_lookup_dcookie(unsigned long cookie_high,
+			  unsigned long cookie_low,
+			  char __user *buf, size_t len)
+{
+	return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
+				  buf, len);
+}
+
+long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
+{
+	return sys_sync_file_range(fd,
+				   (off_high << 32) | off_low,
+				   (nb_high << 32) | nb_low,
+				   flags);
+}
+
+asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
+				     u32 lenhi, u32 lenlo)
+{
+	return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
+			     ((loff_t)lenhi << 32) | lenlo);
+}
diff --git a/arch/sparc/kernel/sys_sparc.c b/arch/sparc/kernel/sys_sparc_32.c
index 03035c852a43..03035c852a43 100644
--- a/arch/sparc/kernel/sys_sparc.c
+++ b/arch/sparc/kernel/sys_sparc_32.c
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
new file mode 100644
index 000000000000..39749e32dc7e
--- /dev/null
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -0,0 +1,914 @@
+/* linux/arch/sparc64/kernel/sys_sparc.c
+ *
+ * This file contains various random system calls that
+ * have a non-standard calling sequence on the Linux/sparc
+ * platform.
+ */
+
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/mm.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/utsname.h>
+#include <linux/smp.h>
+#include <linux/slab.h>
+#include <linux/syscalls.h>
+#include <linux/ipc.h>
+#include <linux/personality.h>
+#include <linux/random.h>
+
+#include <asm/uaccess.h>
+#include <asm/utrap.h>
+#include <asm/perfctr.h>
+#include <asm/unistd.h>
+
+#include "entry.h"
+#include "systbls.h"
+
+/* #define DEBUG_UNIMP_SYSCALL */
+
+asmlinkage unsigned long sys_getpagesize(void)
+{
+	return PAGE_SIZE;
+}
+
+#define VA_EXCLUDE_START (0x0000080000000000UL - (1UL << 32UL))
+#define VA_EXCLUDE_END   (0xfffff80000000000UL + (1UL << 32UL))
+
+/* Does addr --> addr+len fall within 4GB of the VA-space hole or
+ * overflow past the end of the 64-bit address space?
+ */
+static inline int invalid_64bit_range(unsigned long addr, unsigned long len)
+{
+	unsigned long va_exclude_start, va_exclude_end;
+
+	va_exclude_start = VA_EXCLUDE_START;
+	va_exclude_end   = VA_EXCLUDE_END;
+
+	if (unlikely(len >= va_exclude_start))
+		return 1;
+
+	if (unlikely((addr + len) < addr))
+		return 1;
+
+	if (unlikely((addr >= va_exclude_start && addr < va_exclude_end) ||
+		     ((addr + len) >= va_exclude_start &&
+		      (addr + len) < va_exclude_end)))
+		return 1;
+
+	return 0;
+}
+
+/* Does start,end straddle the VA-space hole?  */
+static inline int straddles_64bit_va_hole(unsigned long start, unsigned long end)
+{
+	unsigned long va_exclude_start, va_exclude_end;
+
+	va_exclude_start = VA_EXCLUDE_START;
+	va_exclude_end   = VA_EXCLUDE_END;
+
+	if (likely(start < va_exclude_start && end < va_exclude_start))
+		return 0;
+
+	if (likely(start >= va_exclude_end && end >= va_exclude_end))
+		return 0;
+
+	return 1;
+}
+
+/* These functions differ from the default implementations in
+ * mm/mmap.c in two ways:
+ *
+ * 1) For file backed MAP_SHARED mmap()'s we D-cache color align,
+ *    for fixed such mappings we just validate what the user gave us.
+ * 2) For 64-bit tasks we avoid mapping anything within 4GB of
+ *    the spitfire/niagara VA-hole.
+ */
+
+static inline unsigned long COLOUR_ALIGN(unsigned long addr,
+					 unsigned long pgoff)
+{
+	unsigned long base = (addr+SHMLBA-1)&~(SHMLBA-1);
+	unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1);
+
+	return base + off;
+}
+
+static inline unsigned long COLOUR_ALIGN_DOWN(unsigned long addr,
+					      unsigned long pgoff)
+{
+	unsigned long base = addr & ~(SHMLBA-1);
+	unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1);
+
+	if (base + off <= addr)
+		return base + off;
+	return base - off;
+}
+
+unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+	struct mm_struct *mm = current->mm;
+	struct vm_area_struct * vma;
+	unsigned long task_size = TASK_SIZE;
+	unsigned long start_addr;
+	int do_color_align;
+
+	if (flags & MAP_FIXED) {
+		/* We do not accept a shared mapping if it would violate
+		 * cache aliasing constraints.
+		 */
+		if ((flags & MAP_SHARED) &&
+		    ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
+			return -EINVAL;
+		return addr;
+	}
+
+	if (test_thread_flag(TIF_32BIT))
+		task_size = STACK_TOP32;
+	if (unlikely(len > task_size || len >= VA_EXCLUDE_START))
+		return -ENOMEM;
+
+	do_color_align = 0;
+	if (filp || (flags & MAP_SHARED))
+		do_color_align = 1;
+
+	if (addr) {
+		if (do_color_align)
+			addr = COLOUR_ALIGN(addr, pgoff);
+		else
+			addr = PAGE_ALIGN(addr);
+
+		vma = find_vma(mm, addr);
+		if (task_size - len >= addr &&
+		    (!vma || addr + len <= vma->vm_start))
+			return addr;
+	}
+
+	if (len > mm->cached_hole_size) {
+	        start_addr = addr = mm->free_area_cache;
+	} else {
+	        start_addr = addr = TASK_UNMAPPED_BASE;
+	        mm->cached_hole_size = 0;
+	}
+
+	task_size -= len;
+
+full_search:
+	if (do_color_align)
+		addr = COLOUR_ALIGN(addr, pgoff);
+	else
+		addr = PAGE_ALIGN(addr);
+
+	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
+		/* At this point:  (!vma || addr < vma->vm_end). */
+		if (addr < VA_EXCLUDE_START &&
+		    (addr + len) >= VA_EXCLUDE_START) {
+			addr = VA_EXCLUDE_END;
+			vma = find_vma(mm, VA_EXCLUDE_END);
+		}
+		if (unlikely(task_size < addr)) {
+			if (start_addr != TASK_UNMAPPED_BASE) {
+				start_addr = addr = TASK_UNMAPPED_BASE;
+				mm->cached_hole_size = 0;
+				goto full_search;
+			}
+			return -ENOMEM;
+		}
+		if (likely(!vma || addr + len <= vma->vm_start)) {
+			/*
+			 * Remember the place where we stopped the search:
+			 */
+			mm->free_area_cache = addr + len;
+			return addr;
+		}
+		if (addr + mm->cached_hole_size < vma->vm_start)
+		        mm->cached_hole_size = vma->vm_start - addr;
+
+		addr = vma->vm_end;
+		if (do_color_align)
+			addr = COLOUR_ALIGN(addr, pgoff);
+	}
+}
+
+unsigned long
+arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
+			  const unsigned long len, const unsigned long pgoff,
+			  const unsigned long flags)
+{
+	struct vm_area_struct *vma;
+	struct mm_struct *mm = current->mm;
+	unsigned long task_size = STACK_TOP32;
+	unsigned long addr = addr0;
+	int do_color_align;
+
+	/* This should only ever run for 32-bit processes.  */
+	BUG_ON(!test_thread_flag(TIF_32BIT));
+
+	if (flags & MAP_FIXED) {
+		/* We do not accept a shared mapping if it would violate
+		 * cache aliasing constraints.
+		 */
+		if ((flags & MAP_SHARED) &&
+		    ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
+			return -EINVAL;
+		return addr;
+	}
+
+	if (unlikely(len > task_size))
+		return -ENOMEM;
+
+	do_color_align = 0;
+	if (filp || (flags & MAP_SHARED))
+		do_color_align = 1;
+
+	/* requesting a specific address */
+	if (addr) {
+		if (do_color_align)
+			addr = COLOUR_ALIGN(addr, pgoff);
+		else
+			addr = PAGE_ALIGN(addr);
+
+		vma = find_vma(mm, addr);
+		if (task_size - len >= addr &&
+		    (!vma || addr + len <= vma->vm_start))
+			return addr;
+	}
+
+	/* check if free_area_cache is useful for us */
+	if (len <= mm->cached_hole_size) {
+ 	        mm->cached_hole_size = 0;
+ 		mm->free_area_cache = mm->mmap_base;
+ 	}
+
+	/* either no address requested or can't fit in requested address hole */
+	addr = mm->free_area_cache;
+	if (do_color_align) {
+		unsigned long base = COLOUR_ALIGN_DOWN(addr-len, pgoff);
+
+		addr = base + len;
+	}
+
+	/* make sure it can fit in the remaining address space */
+	if (likely(addr > len)) {
+		vma = find_vma(mm, addr-len);
+		if (!vma || addr <= vma->vm_start) {
+			/* remember the address as a hint for next time */
+			return (mm->free_area_cache = addr-len);
+		}
+	}
+
+	if (unlikely(mm->mmap_base < len))
+		goto bottomup;
+
+	addr = mm->mmap_base-len;
+	if (do_color_align)
+		addr = COLOUR_ALIGN_DOWN(addr, pgoff);
+
+	do {
+		/*
+		 * Lookup failure means no vma is above this address,
+		 * else if new region fits below vma->vm_start,
+		 * return with success:
+		 */
+		vma = find_vma(mm, addr);
+		if (likely(!vma || addr+len <= vma->vm_start)) {
+			/* remember the address as a hint for next time */
+			return (mm->free_area_cache = addr);
+		}
+
+ 		/* remember the largest hole we saw so far */
+ 		if (addr + mm->cached_hole_size < vma->vm_start)
+ 		        mm->cached_hole_size = vma->vm_start - addr;
+
+		/* try just below the current vma->vm_start */
+		addr = vma->vm_start-len;
+		if (do_color_align)
+			addr = COLOUR_ALIGN_DOWN(addr, pgoff);
+	} while (likely(len < vma->vm_start));
+
+bottomup:
+	/*
+	 * A failed mmap() very likely causes application failure,
+	 * so fall back to the bottom-up function here. This scenario
+	 * can happen with large stack limits and large mmap()
+	 * allocations.
+	 */
+	mm->cached_hole_size = ~0UL;
+  	mm->free_area_cache = TASK_UNMAPPED_BASE;
+	addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
+	/*
+	 * Restore the topdown base:
+	 */
+	mm->free_area_cache = mm->mmap_base;
+	mm->cached_hole_size = ~0UL;
+
+	return addr;
+}
+
+/* Try to align mapping such that we align it as much as possible. */
+unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+	unsigned long align_goal, addr = -ENOMEM;
+
+	if (flags & MAP_FIXED) {
+		/* Ok, don't mess with it. */
+		return get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+	}
+	flags &= ~MAP_SHARED;
+
+	align_goal = PAGE_SIZE;
+	if (len >= (4UL * 1024 * 1024))
+		align_goal = (4UL * 1024 * 1024);
+	else if (len >= (512UL * 1024))
+		align_goal = (512UL * 1024);
+	else if (len >= (64UL * 1024))
+		align_goal = (64UL * 1024);
+
+	do {
+		addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
+		if (!(addr & ~PAGE_MASK)) {
+			addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
+			break;
+		}
+
+		if (align_goal == (4UL * 1024 * 1024))
+			align_goal = (512UL * 1024);
+		else if (align_goal == (512UL * 1024))
+			align_goal = (64UL * 1024);
+		else
+			align_goal = PAGE_SIZE;
+	} while ((addr & ~PAGE_MASK) && align_goal > PAGE_SIZE);
+
+	/* Mapping is smaller than 64K or larger areas could not
+	 * be obtained.
+	 */
+	if (addr & ~PAGE_MASK)
+		addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+
+	return addr;
+}
+
+/* Essentially the same as PowerPC... */
+void arch_pick_mmap_layout(struct mm_struct *mm)
+{
+	unsigned long random_factor = 0UL;
+
+	if (current->flags & PF_RANDOMIZE) {
+		random_factor = get_random_int();
+		if (test_thread_flag(TIF_32BIT))
+			random_factor &= ((1 * 1024 * 1024) - 1);
+		else
+			random_factor = ((random_factor << PAGE_SHIFT) &
+					 0xffffffffUL);
+	}
+
+	/*
+	 * Fall back to the standard layout if the personality
+	 * bit is set, or if the expected stack growth is unlimited:
+	 */
+	if (!test_thread_flag(TIF_32BIT) ||
+	    (current->personality & ADDR_COMPAT_LAYOUT) ||
+	    current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY ||
+	    sysctl_legacy_va_layout) {
+		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
+		mm->get_unmapped_area = arch_get_unmapped_area;
+		mm->unmap_area = arch_unmap_area;
+	} else {
+		/* We know it's 32-bit */
+		unsigned long task_size = STACK_TOP32;
+		unsigned long gap;
+
+		gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
+		if (gap < 128 * 1024 * 1024)
+			gap = 128 * 1024 * 1024;
+		if (gap > (task_size / 6 * 5))
+			gap = (task_size / 6 * 5);
+
+		mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor);
+		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
+		mm->unmap_area = arch_unmap_area_topdown;
+	}
+}
+
+asmlinkage unsigned long sparc_brk(unsigned long brk)
+{
+	/* People could try to be nasty and use ta 0x6d in 32bit programs */
+	if (test_thread_flag(TIF_32BIT) && brk >= STACK_TOP32)
+		return current->mm->brk;
+
+	if (unlikely(straddles_64bit_va_hole(current->mm->brk, brk)))
+		return current->mm->brk;
+
+	return sys_brk(brk);
+}
+                                                                
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way unix traditionally does this, though.
+ */
+asmlinkage long sparc_pipe(struct pt_regs *regs)
+{
+	int fd[2];
+	int error;
+
+	error = do_pipe_flags(fd, 0);
+	if (error)
+		goto out;
+	regs->u_regs[UREG_I1] = fd[1];
+	error = fd[0];
+out:
+	return error;
+}
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+
+asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
+			unsigned long third, void __user *ptr, long fifth)
+{
+	long err;
+
+	/* No need for backward compatibility. We can start fresh... */
+	if (call <= SEMCTL) {
+		switch (call) {
+		case SEMOP:
+			err = sys_semtimedop(first, ptr,
+					     (unsigned)second, NULL);
+			goto out;
+		case SEMTIMEDOP:
+			err = sys_semtimedop(first, ptr, (unsigned)second,
+				(const struct timespec __user *)
+					     (unsigned long) fifth);
+			goto out;
+		case SEMGET:
+			err = sys_semget(first, (int)second, (int)third);
+			goto out;
+		case SEMCTL: {
+			err = sys_semctl(first, second,
+					 (int)third | IPC_64,
+					 (union semun) ptr);
+			goto out;
+		}
+		default:
+			err = -ENOSYS;
+			goto out;
+		};
+	}
+	if (call <= MSGCTL) {
+		switch (call) {
+		case MSGSND:
+			err = sys_msgsnd(first, ptr, (size_t)second,
+					 (int)third);
+			goto out;
+		case MSGRCV:
+			err = sys_msgrcv(first, ptr, (size_t)second, fifth,
+					 (int)third);
+			goto out;
+		case MSGGET:
+			err = sys_msgget((key_t)first, (int)second);
+			goto out;
+		case MSGCTL:
+			err = sys_msgctl(first, (int)second | IPC_64, ptr);
+			goto out;
+		default:
+			err = -ENOSYS;
+			goto out;
+		};
+	}
+	if (call <= SHMCTL) {
+		switch (call) {
+		case SHMAT: {
+			ulong raddr;
+			err = do_shmat(first, ptr, (int)second, &raddr);
+			if (!err) {
+				if (put_user(raddr,
+					     (ulong __user *) third))
+					err = -EFAULT;
+			}
+			goto out;
+		}
+		case SHMDT:
+			err = sys_shmdt(ptr);
+			goto out;
+		case SHMGET:
+			err = sys_shmget(first, (size_t)second, (int)third);
+			goto out;
+		case SHMCTL:
+			err = sys_shmctl(first, (int)second | IPC_64, ptr);
+			goto out;
+		default:
+			err = -ENOSYS;
+			goto out;
+		};
+	} else {
+		err = -ENOSYS;
+	}
+out:
+	return err;
+}
+
+asmlinkage long sparc64_newuname(struct new_utsname __user *name)
+{
+	int ret = sys_newuname(name);
+	
+	if (current->personality == PER_LINUX32 && !ret) {
+		ret = (copy_to_user(name->machine, "sparc\0\0", 8)
+		       ? -EFAULT : 0);
+	}
+	return ret;
+}
+
+asmlinkage long sparc64_personality(unsigned long personality)
+{
+	int ret;
+
+	if (current->personality == PER_LINUX32 &&
+	    personality == PER_LINUX)
+		personality = PER_LINUX32;
+	ret = sys_personality(personality);
+	if (ret == PER_LINUX32)
+		ret = PER_LINUX;
+
+	return ret;
+}
+
+int sparc_mmap_check(unsigned long addr, unsigned long len)
+{
+	if (test_thread_flag(TIF_32BIT)) {
+		if (len >= STACK_TOP32)
+			return -EINVAL;
+
+		if (addr > STACK_TOP32 - len)
+			return -EINVAL;
+	} else {
+		if (len >= VA_EXCLUDE_START)
+			return -EINVAL;
+
+		if (invalid_64bit_range(addr, len))
+			return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Linux version of mmap */
+asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
+	unsigned long prot, unsigned long flags, unsigned long fd,
+	unsigned long off)
+{
+	struct file * file = NULL;
+	unsigned long retval = -EBADF;
+
+	if (!(flags & MAP_ANONYMOUS)) {
+		file = fget(fd);
+		if (!file)
+			goto out;
+	}
+	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+	len = PAGE_ALIGN(len);
+
+	down_write(&current->mm->mmap_sem);
+	retval = do_mmap(file, addr, len, prot, flags, off);
+	up_write(&current->mm->mmap_sem);
+
+	if (file)
+		fput(file);
+out:
+	return retval;
+}
+
+asmlinkage long sys64_munmap(unsigned long addr, size_t len)
+{
+	long ret;
+
+	if (invalid_64bit_range(addr, len))
+		return -EINVAL;
+
+	down_write(&current->mm->mmap_sem);
+	ret = do_munmap(current->mm, addr, len);
+	up_write(&current->mm->mmap_sem);
+	return ret;
+}
+
+extern unsigned long do_mremap(unsigned long addr,
+	unsigned long old_len, unsigned long new_len,
+	unsigned long flags, unsigned long new_addr);
+                
+asmlinkage unsigned long sys64_mremap(unsigned long addr,
+	unsigned long old_len, unsigned long new_len,
+	unsigned long flags, unsigned long new_addr)
+{
+	unsigned long ret = -EINVAL;
+
+	if (test_thread_flag(TIF_32BIT))
+		goto out;
+	if (unlikely(new_len >= VA_EXCLUDE_START))
+		goto out;
+	if (unlikely(sparc_mmap_check(addr, old_len)))
+		goto out;
+	if (unlikely(sparc_mmap_check(new_addr, new_len)))
+		goto out;
+
+	down_write(&current->mm->mmap_sem);
+	ret = do_mremap(addr, old_len, new_len, flags, new_addr);
+	up_write(&current->mm->mmap_sem);
+out:
+	return ret;       
+}
+
+/* we come to here via sys_nis_syscall so it can setup the regs argument */
+asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs)
+{
+	static int count;
+	
+	/* Don't make the system unusable, if someone goes stuck */
+	if (count++ > 5)
+		return -ENOSYS;
+
+	printk ("Unimplemented SPARC system call %ld\n",regs->u_regs[1]);
+#ifdef DEBUG_UNIMP_SYSCALL	
+	show_regs (regs);
+#endif
+
+	return -ENOSYS;
+}
+
+/* #define DEBUG_SPARC_BREAKPOINT */
+
+asmlinkage void sparc_breakpoint(struct pt_regs *regs)
+{
+	siginfo_t info;
+
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+#ifdef DEBUG_SPARC_BREAKPOINT
+        printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc);
+#endif
+	info.si_signo = SIGTRAP;
+	info.si_errno = 0;
+	info.si_code = TRAP_BRKPT;
+	info.si_addr = (void __user *)regs->tpc;
+	info.si_trapno = 0;
+	force_sig_info(SIGTRAP, &info, current);
+#ifdef DEBUG_SPARC_BREAKPOINT
+	printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
+#endif
+}
+
+extern void check_pending(int signum);
+
+asmlinkage long sys_getdomainname(char __user *name, int len)
+{
+        int nlen, err;
+
+	if (len < 0)
+		return -EINVAL;
+
+ 	down_read(&uts_sem);
+ 	
+	nlen = strlen(utsname()->domainname) + 1;
+	err = -EINVAL;
+	if (nlen > len)
+		goto out;
+
+	err = -EFAULT;
+	if (!copy_to_user(name, utsname()->domainname, nlen))
+		err = 0;
+
+out:
+	up_read(&uts_sem);
+	return err;
+}
+
+asmlinkage long sys_utrap_install(utrap_entry_t type,
+				  utrap_handler_t new_p,
+				  utrap_handler_t new_d,
+				  utrap_handler_t __user *old_p,
+				  utrap_handler_t __user *old_d)
+{
+	if (type < UT_INSTRUCTION_EXCEPTION || type > UT_TRAP_INSTRUCTION_31)
+		return -EINVAL;
+	if (new_p == (utrap_handler_t)(long)UTH_NOCHANGE) {
+		if (old_p) {
+			if (!current_thread_info()->utraps) {
+				if (put_user(NULL, old_p))
+					return -EFAULT;
+			} else {
+				if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
+					return -EFAULT;
+			}
+		}
+		if (old_d) {
+			if (put_user(NULL, old_d))
+				return -EFAULT;
+		}
+		return 0;
+	}
+	if (!current_thread_info()->utraps) {
+		current_thread_info()->utraps =
+			kzalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL);
+		if (!current_thread_info()->utraps)
+			return -ENOMEM;
+		current_thread_info()->utraps[0] = 1;
+	} else {
+		if ((utrap_handler_t)current_thread_info()->utraps[type] != new_p &&
+		    current_thread_info()->utraps[0] > 1) {
+			unsigned long *p = current_thread_info()->utraps;
+
+			current_thread_info()->utraps =
+				kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long),
+					GFP_KERNEL);
+			if (!current_thread_info()->utraps) {
+				current_thread_info()->utraps = p;
+				return -ENOMEM;
+			}
+			p[0]--;
+			current_thread_info()->utraps[0] = 1;
+			memcpy(current_thread_info()->utraps+1, p+1,
+			       UT_TRAP_INSTRUCTION_31*sizeof(long));
+		}
+	}
+	if (old_p) {
+		if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
+			return -EFAULT;
+	}
+	if (old_d) {
+		if (put_user(NULL, old_d))
+			return -EFAULT;
+	}
+	current_thread_info()->utraps[type] = (long)new_p;
+
+	return 0;
+}
+
+asmlinkage long sparc_memory_ordering(unsigned long model,
+				      struct pt_regs *regs)
+{
+	if (model >= 3)
+		return -EINVAL;
+	regs->tstate = (regs->tstate & ~TSTATE_MM) | (model << 14);
+	return 0;
+}
+
+asmlinkage long sys_rt_sigaction(int sig,
+				 const struct sigaction __user *act,
+				 struct sigaction __user *oact,
+				 void __user *restorer,
+				 size_t sigsetsize)
+{
+	struct k_sigaction new_ka, old_ka;
+	int ret;
+
+	/* XXX: Don't preclude handling different sized sigset_t's.  */
+	if (sigsetsize != sizeof(sigset_t))
+		return -EINVAL;
+
+	if (act) {
+		new_ka.ka_restorer = restorer;
+		if (copy_from_user(&new_ka.sa, act, sizeof(*act)))
+			return -EFAULT;
+	}
+
+	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		if (copy_to_user(oact, &old_ka.sa, sizeof(*oact)))
+			return -EFAULT;
+	}
+
+	return ret;
+}
+
+/* Invoked by rtrap code to update performance counters in
+ * user space.
+ */
+asmlinkage void update_perfctrs(void)
+{
+	unsigned long pic, tmp;
+
+	read_pic(pic);
+	tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
+	__put_user(tmp, current_thread_info()->user_cntd0);
+	tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
+	__put_user(tmp, current_thread_info()->user_cntd1);
+	reset_pic();
+}
+
+asmlinkage long sys_perfctr(int opcode, unsigned long arg0, unsigned long arg1, unsigned long arg2)
+{
+	int err = 0;
+
+	switch(opcode) {
+	case PERFCTR_ON:
+		current_thread_info()->pcr_reg = arg2;
+		current_thread_info()->user_cntd0 = (u64 __user *) arg0;
+		current_thread_info()->user_cntd1 = (u64 __user *) arg1;
+		current_thread_info()->kernel_cntd0 =
+			current_thread_info()->kernel_cntd1 = 0;
+		write_pcr(arg2);
+		reset_pic();
+		set_thread_flag(TIF_PERFCTR);
+		break;
+
+	case PERFCTR_OFF:
+		err = -EINVAL;
+		if (test_thread_flag(TIF_PERFCTR)) {
+			current_thread_info()->user_cntd0 =
+				current_thread_info()->user_cntd1 = NULL;
+			current_thread_info()->pcr_reg = 0;
+			write_pcr(0);
+			clear_thread_flag(TIF_PERFCTR);
+			err = 0;
+		}
+		break;
+
+	case PERFCTR_READ: {
+		unsigned long pic, tmp;
+
+		if (!test_thread_flag(TIF_PERFCTR)) {
+			err = -EINVAL;
+			break;
+		}
+		read_pic(pic);
+		tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
+		err |= __put_user(tmp, current_thread_info()->user_cntd0);
+		tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
+		err |= __put_user(tmp, current_thread_info()->user_cntd1);
+		reset_pic();
+		break;
+	}
+
+	case PERFCTR_CLRPIC:
+		if (!test_thread_flag(TIF_PERFCTR)) {
+			err = -EINVAL;
+			break;
+		}
+		current_thread_info()->kernel_cntd0 =
+			current_thread_info()->kernel_cntd1 = 0;
+		reset_pic();
+		break;
+
+	case PERFCTR_SETPCR: {
+		u64 __user *user_pcr = (u64 __user *)arg0;
+
+		if (!test_thread_flag(TIF_PERFCTR)) {
+			err = -EINVAL;
+			break;
+		}
+		err |= __get_user(current_thread_info()->pcr_reg, user_pcr);
+		write_pcr(current_thread_info()->pcr_reg);
+		current_thread_info()->kernel_cntd0 =
+			current_thread_info()->kernel_cntd1 = 0;
+		reset_pic();
+		break;
+	}
+
+	case PERFCTR_GETPCR: {
+		u64 __user *user_pcr = (u64 __user *)arg0;
+
+		if (!test_thread_flag(TIF_PERFCTR)) {
+			err = -EINVAL;
+			break;
+		}
+		err |= __put_user(current_thread_info()->pcr_reg, user_pcr);
+		break;
+	}
+
+	default:
+		err = -EINVAL;
+		break;
+	};
+	return err;
+}
+
+/*
+ * Do a system call from kernel instead of calling sys_execve so we
+ * end up with proper pt_regs.
+ */
+int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+{
+	long __res;
+	register long __g1 __asm__ ("g1") = __NR_execve;
+	register long __o0 __asm__ ("o0") = (long)(filename);
+	register long __o1 __asm__ ("o1") = (long)(argv);
+	register long __o2 __asm__ ("o2") = (long)(envp);
+	asm volatile ("t 0x6d\n\t"
+		      "sub %%g0, %%o0, %0\n\t"
+		      "movcc %%xcc, %%o0, %0\n\t"
+		      : "=r" (__res), "=&r" (__o0)
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1)
+		      : "cc");
+	return __res;
+}
diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
new file mode 100644
index 000000000000..7a6786a71363
--- /dev/null
+++ b/arch/sparc/kernel/syscalls.S
@@ -0,0 +1,279 @@
+	/* SunOS's execv() call only specifies the argv argument, the
+	 * environment settings are the same as the calling processes.
+	 */
+sys_execve:
+	sethi	%hi(sparc_execve), %g1
+	ba,pt	%xcc, execve_merge
+	 or	%g1, %lo(sparc_execve), %g1
+
+#ifdef CONFIG_COMPAT
+sunos_execv:
+	stx	%g0, [%sp + PTREGS_OFF + PT_V9_I2]
+sys32_execve:
+	sethi	%hi(sparc32_execve), %g1
+	or	%g1, %lo(sparc32_execve), %g1
+#endif
+
+execve_merge:
+	flushw
+	jmpl	%g1, %g0
+	 add	%sp, PTREGS_OFF, %o0
+
+	.align	32
+sys_pipe:
+	ba,pt	%xcc, sparc_pipe
+	 add	%sp, PTREGS_OFF, %o0
+sys_nis_syscall:
+	ba,pt	%xcc, c_sys_nis_syscall
+	 add	%sp, PTREGS_OFF, %o0
+sys_memory_ordering:
+	ba,pt	%xcc, sparc_memory_ordering
+	 add	%sp, PTREGS_OFF, %o1
+sys_sigaltstack:
+	ba,pt	%xcc, do_sigaltstack
+	 add	%i6, STACK_BIAS, %o2
+#ifdef CONFIG_COMPAT
+sys32_sigstack:
+	ba,pt	%xcc, do_sys32_sigstack
+	 mov	%i6, %o2
+sys32_sigaltstack:
+	ba,pt	%xcc, do_sys32_sigaltstack
+	 mov	%i6, %o2
+#endif
+	.align	32
+#ifdef CONFIG_COMPAT
+sys32_sigreturn:
+	add	%sp, PTREGS_OFF, %o0
+	call	do_sigreturn32
+	 add	%o7, 1f-.-4, %o7
+	nop
+#endif
+sys_rt_sigreturn:
+	add	%sp, PTREGS_OFF, %o0
+	call	do_rt_sigreturn
+	 add	%o7, 1f-.-4, %o7
+	nop
+#ifdef CONFIG_COMPAT
+sys32_rt_sigreturn:
+	add	%sp, PTREGS_OFF, %o0
+	call	do_rt_sigreturn32
+	 add	%o7, 1f-.-4, %o7
+	nop
+#endif
+	.align	32
+1:	ldx	[%g6 + TI_FLAGS], %l5
+	andcc	%l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
+	be,pt	%icc, rtrap
+	 nop
+	call	syscall_trace_leave
+	 add	%sp, PTREGS_OFF, %o0
+	ba,pt	%xcc, rtrap
+	 nop
+
+	/* This is how fork() was meant to be done, 8 instruction entry.
+	 *
+	 * I questioned the following code briefly, let me clear things
+	 * up so you must not reason on it like I did.
+	 *
+	 * Know the fork_kpsr etc. we use in the sparc32 port?  We don't
+	 * need it here because the only piece of window state we copy to
+	 * the child is the CWP register.  Even if the parent sleeps,
+	 * we are safe because we stuck it into pt_regs of the parent
+	 * so it will not change.
+	 *
+	 * XXX This raises the question, whether we can do the same on
+	 * XXX sparc32 to get rid of fork_kpsr _and_ fork_kwim.  The
+	 * XXX answer is yes.  We stick fork_kpsr in UREG_G0 and
+	 * XXX fork_kwim in UREG_G1 (global registers are considered
+	 * XXX volatile across a system call in the sparc ABI I think
+	 * XXX if it isn't we can use regs->y instead, anyone who depends
+	 * XXX upon the Y register being preserved across a fork deserves
+	 * XXX to lose).
+	 *
+	 * In fact we should take advantage of that fact for other things
+	 * during system calls...
+	 */
+	.align	32
+sys_vfork: /* Under Linux, vfork and fork are just special cases of clone. */
+	sethi	%hi(0x4000 | 0x0100 | SIGCHLD), %o0
+	or	%o0, %lo(0x4000 | 0x0100 | SIGCHLD), %o0
+	ba,pt	%xcc, sys_clone
+sys_fork:
+	 clr	%o1
+	mov	SIGCHLD, %o0
+sys_clone:
+	flushw
+	movrz	%o1, %fp, %o1
+	mov	0, %o3
+	ba,pt	%xcc, sparc_do_fork
+	 add	%sp, PTREGS_OFF, %o2
+
+	.globl	ret_from_syscall
+ret_from_syscall:
+	/* Clear current_thread_info()->new_child, and
+	 * check performance counter stuff too.
+	 */
+	stb	%g0, [%g6 + TI_NEW_CHILD]
+	ldx	[%g6 + TI_FLAGS], %l0
+	call	schedule_tail
+	 mov	%g7, %o0
+	andcc	%l0, _TIF_PERFCTR, %g0
+	be,pt	%icc, 1f
+	 nop
+	ldx	[%g6 + TI_PCR], %o7
+	wr	%g0, %o7, %pcr
+
+	/* Blackbird errata workaround.  See commentary in
+	 * smp.c:smp_percpu_timer_interrupt() for more
+	 * information.
+	 */
+	ba,pt	%xcc, 99f
+	 nop
+
+	.align	64
+99:	wr	%g0, %g0, %pic
+	rd	%pic, %g0
+
+1:	ba,pt	%xcc, ret_sys_call
+	 ldx	[%sp + PTREGS_OFF + PT_V9_I0], %o0
+
+	.globl	sparc_exit
+	.type	sparc_exit,#function
+sparc_exit:
+	rdpr	%pstate, %g2
+	wrpr	%g2, PSTATE_IE, %pstate
+	rdpr	%otherwin, %g1
+	rdpr	%cansave, %g3
+	add	%g3, %g1, %g3
+	wrpr	%g3, 0x0, %cansave
+	wrpr	%g0, 0x0, %otherwin
+	wrpr	%g2, 0x0, %pstate
+	ba,pt	%xcc, sys_exit
+	 stb	%g0, [%g6 + TI_WSAVED]
+	.size	sparc_exit,.-sparc_exit
+
+linux_sparc_ni_syscall:
+	sethi	%hi(sys_ni_syscall), %l7
+	ba,pt	%xcc, 4f
+	 or	%l7, %lo(sys_ni_syscall), %l7
+
+linux_syscall_trace32:
+	call	syscall_trace_enter
+	 add	%sp, PTREGS_OFF, %o0
+	brnz,pn	%o0, 3f
+	 mov	-ENOSYS, %o0
+	srl	%i0, 0, %o0
+	srl	%i4, 0, %o4
+	srl	%i1, 0, %o1
+	srl	%i2, 0, %o2
+	ba,pt	%xcc, 2f
+	 srl	%i3, 0, %o3
+
+linux_syscall_trace:
+	call	syscall_trace_enter
+	 add	%sp, PTREGS_OFF, %o0
+	brnz,pn	%o0, 3f
+	 mov	-ENOSYS, %o0
+	mov	%i0, %o0
+	mov	%i1, %o1
+	mov	%i2, %o2
+	mov	%i3, %o3
+	b,pt	%xcc, 2f
+	 mov	%i4, %o4
+
+
+	/* Linux 32-bit system calls enter here... */
+	.align	32
+	.globl	linux_sparc_syscall32
+linux_sparc_syscall32:
+	/* Direct access to user regs, much faster. */
+	cmp	%g1, NR_SYSCALLS			! IEU1	Group
+	bgeu,pn	%xcc, linux_sparc_ni_syscall		! CTI
+	 srl	%i0, 0, %o0				! IEU0
+	sll	%g1, 2, %l4				! IEU0	Group
+	srl	%i4, 0, %o4				! IEU1
+	lduw	[%l7 + %l4], %l7			! Load
+	srl	%i1, 0, %o1				! IEU0	Group
+	ldx	[%g6 + TI_FLAGS], %l0		! Load
+
+	srl	%i5, 0, %o5				! IEU1
+	srl	%i2, 0, %o2				! IEU0	Group
+	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
+	bne,pn	%icc, linux_syscall_trace32		! CTI
+	 mov	%i0, %l5				! IEU1
+	call	%l7					! CTI	Group brk forced
+	 srl	%i3, 0, %o3				! IEU0
+	ba,a,pt	%xcc, 3f
+
+	/* Linux native system calls enter here... */
+	.align	32
+	.globl	linux_sparc_syscall
+linux_sparc_syscall:
+	/* Direct access to user regs, much faster. */
+	cmp	%g1, NR_SYSCALLS			! IEU1	Group
+	bgeu,pn	%xcc, linux_sparc_ni_syscall		! CTI
+	 mov	%i0, %o0				! IEU0
+	sll	%g1, 2, %l4				! IEU0	Group
+	mov	%i1, %o1				! IEU1
+	lduw	[%l7 + %l4], %l7			! Load
+4:	mov	%i2, %o2				! IEU0	Group
+	ldx	[%g6 + TI_FLAGS], %l0		! Load
+
+	mov	%i3, %o3				! IEU1
+	mov	%i4, %o4				! IEU0	Group
+	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
+	bne,pn	%icc, linux_syscall_trace		! CTI	Group
+	 mov	%i0, %l5				! IEU0
+2:	call	%l7					! CTI	Group brk forced
+	 mov	%i5, %o5				! IEU0
+	nop
+
+3:	stx	%o0, [%sp + PTREGS_OFF + PT_V9_I0]
+ret_sys_call:
+	ldx	[%sp + PTREGS_OFF + PT_V9_TSTATE], %g3
+	ldx	[%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
+	sra	%o0, 0, %o0
+	mov	%ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2
+	sllx	%g2, 32, %g2
+
+	/* Check if force_successful_syscall_return()
+	 * was invoked.
+	 */
+	ldub	[%g6 + TI_SYS_NOERROR], %l2
+	brnz,a,pn %l2, 80f
+	 stb	%g0, [%g6 + TI_SYS_NOERROR]
+
+	cmp	%o0, -ERESTART_RESTARTBLOCK
+	bgeu,pn	%xcc, 1f
+	 andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
+80:
+	/* System call success, clear Carry condition code. */
+	andn	%g3, %g2, %g3
+	stx	%g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]	
+	bne,pn	%icc, linux_syscall_trace2
+	 add	%l1, 0x4, %l2			! npc = npc+4
+	stx	%l1, [%sp + PTREGS_OFF + PT_V9_TPC]
+	ba,pt	%xcc, rtrap
+	 stx	%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
+
+1:
+	/* System call failure, set Carry condition code.
+	 * Also, get abs(errno) to return to the process.
+	 */
+	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6	
+	sub	%g0, %o0, %o0
+	or	%g3, %g2, %g3
+	stx	%o0, [%sp + PTREGS_OFF + PT_V9_I0]
+	stx	%g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
+	bne,pn	%icc, linux_syscall_trace2
+	 add	%l1, 0x4, %l2			! npc = npc+4
+	stx	%l1, [%sp + PTREGS_OFF + PT_V9_TPC]
+
+	b,pt	%xcc, rtrap
+	 stx	%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
+linux_syscall_trace2:
+	call	syscall_trace_leave
+	 add	%sp, PTREGS_OFF, %o0
+	stx	%l1, [%sp + PTREGS_OFF + PT_V9_TPC]
+	ba,pt	%xcc, rtrap
+	 stx	%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
diff --git a/arch/sparc/kernel/sysfs.c b/arch/sparc/kernel/sysfs.c
new file mode 100644
index 000000000000..d28f496f4669
--- /dev/null
+++ b/arch/sparc/kernel/sysfs.c
@@ -0,0 +1,314 @@
+/* sysfs.c: Toplogy sysfs support code for sparc64.
+ *
+ * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/sysdev.h>
+#include <linux/cpu.h>
+#include <linux/smp.h>
+#include <linux/percpu.h>
+#include <linux/init.h>
+
+#include <asm/cpudata.h>
+#include <asm/hypervisor.h>
+#include <asm/spitfire.h>
+
+static DEFINE_PER_CPU(struct hv_mmu_statistics, mmu_stats) __attribute__((aligned(64)));
+
+#define SHOW_MMUSTAT_ULONG(NAME) \
+static ssize_t show_##NAME(struct sys_device *dev, \
+			struct sysdev_attribute *attr, char *buf) \
+{ \
+	struct hv_mmu_statistics *p = &per_cpu(mmu_stats, dev->id); \
+	return sprintf(buf, "%lu\n", p->NAME); \
+} \
+static SYSDEV_ATTR(NAME, 0444, show_##NAME, NULL)
+
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_8k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_8k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_64k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_64k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_4mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_4mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_256mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_256mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_8k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_8k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_64k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_64k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_4mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_4mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_256mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_256mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_8k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_8k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_64k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_64k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_4mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_4mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_256mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_256mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_8k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_8k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_64k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_64k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_4mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_4mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_256mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_256mb_tte);
+
+static struct attribute *mmu_stat_attrs[] = {
+	&attr_immu_tsb_hits_ctx0_8k_tte.attr,
+	&attr_immu_tsb_ticks_ctx0_8k_tte.attr,
+	&attr_immu_tsb_hits_ctx0_64k_tte.attr,
+	&attr_immu_tsb_ticks_ctx0_64k_tte.attr,
+	&attr_immu_tsb_hits_ctx0_4mb_tte.attr,
+	&attr_immu_tsb_ticks_ctx0_4mb_tte.attr,
+	&attr_immu_tsb_hits_ctx0_256mb_tte.attr,
+	&attr_immu_tsb_ticks_ctx0_256mb_tte.attr,
+	&attr_immu_tsb_hits_ctxnon0_8k_tte.attr,
+	&attr_immu_tsb_ticks_ctxnon0_8k_tte.attr,
+	&attr_immu_tsb_hits_ctxnon0_64k_tte.attr,
+	&attr_immu_tsb_ticks_ctxnon0_64k_tte.attr,
+	&attr_immu_tsb_hits_ctxnon0_4mb_tte.attr,
+	&attr_immu_tsb_ticks_ctxnon0_4mb_tte.attr,
+	&attr_immu_tsb_hits_ctxnon0_256mb_tte.attr,
+	&attr_immu_tsb_ticks_ctxnon0_256mb_tte.attr,
+	&attr_dmmu_tsb_hits_ctx0_8k_tte.attr,
+	&attr_dmmu_tsb_ticks_ctx0_8k_tte.attr,
+	&attr_dmmu_tsb_hits_ctx0_64k_tte.attr,
+	&attr_dmmu_tsb_ticks_ctx0_64k_tte.attr,
+	&attr_dmmu_tsb_hits_ctx0_4mb_tte.attr,
+	&attr_dmmu_tsb_ticks_ctx0_4mb_tte.attr,
+	&attr_dmmu_tsb_hits_ctx0_256mb_tte.attr,
+	&attr_dmmu_tsb_ticks_ctx0_256mb_tte.attr,
+	&attr_dmmu_tsb_hits_ctxnon0_8k_tte.attr,
+	&attr_dmmu_tsb_ticks_ctxnon0_8k_tte.attr,
+	&attr_dmmu_tsb_hits_ctxnon0_64k_tte.attr,
+	&attr_dmmu_tsb_ticks_ctxnon0_64k_tte.attr,
+	&attr_dmmu_tsb_hits_ctxnon0_4mb_tte.attr,
+	&attr_dmmu_tsb_ticks_ctxnon0_4mb_tte.attr,
+	&attr_dmmu_tsb_hits_ctxnon0_256mb_tte.attr,
+	&attr_dmmu_tsb_ticks_ctxnon0_256mb_tte.attr,
+	NULL,
+};
+
+static struct attribute_group mmu_stat_group = {
+	.attrs = mmu_stat_attrs,
+	.name = "mmu_stats",
+};
+
+/* XXX convert to rusty's on_one_cpu */
+static unsigned long run_on_cpu(unsigned long cpu,
+			        unsigned long (*func)(unsigned long),
+				unsigned long arg)
+{
+	cpumask_t old_affinity = current->cpus_allowed;
+	unsigned long ret;
+
+	/* should return -EINVAL to userspace */
+	if (set_cpus_allowed(current, cpumask_of_cpu(cpu)))
+		return 0;
+
+	ret = func(arg);
+
+	set_cpus_allowed(current, old_affinity);
+
+	return ret;
+}
+
+static unsigned long read_mmustat_enable(unsigned long junk)
+{
+	unsigned long ra = 0;
+
+	sun4v_mmustat_info(&ra);
+
+	return ra != 0;
+}
+
+static unsigned long write_mmustat_enable(unsigned long val)
+{
+	unsigned long ra, orig_ra;
+
+	if (val)
+		ra = __pa(&per_cpu(mmu_stats, smp_processor_id()));
+	else
+		ra = 0UL;
+
+	return sun4v_mmustat_conf(ra, &orig_ra);
+}
+
+static ssize_t show_mmustat_enable(struct sys_device *s,
+				struct sysdev_attribute *attr, char *buf)
+{
+	unsigned long val = run_on_cpu(s->id, read_mmustat_enable, 0);
+	return sprintf(buf, "%lx\n", val);
+}
+
+static ssize_t store_mmustat_enable(struct sys_device *s,
+			struct sysdev_attribute *attr, const char *buf,
+			size_t count)
+{
+	unsigned long val, err;
+	int ret = sscanf(buf, "%ld", &val);
+
+	if (ret != 1)
+		return -EINVAL;
+
+	err = run_on_cpu(s->id, write_mmustat_enable, val);
+	if (err)
+		return -EIO;
+
+	return count;
+}
+
+static SYSDEV_ATTR(mmustat_enable, 0644, show_mmustat_enable, store_mmustat_enable);
+
+static int mmu_stats_supported;
+
+static int register_mmu_stats(struct sys_device *s)
+{
+	if (!mmu_stats_supported)
+		return 0;
+	sysdev_create_file(s, &attr_mmustat_enable);
+	return sysfs_create_group(&s->kobj, &mmu_stat_group);
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+static void unregister_mmu_stats(struct sys_device *s)
+{
+	if (!mmu_stats_supported)
+		return;
+	sysfs_remove_group(&s->kobj, &mmu_stat_group);
+	sysdev_remove_file(s, &attr_mmustat_enable);
+}
+#endif
+
+#define SHOW_CPUDATA_ULONG_NAME(NAME, MEMBER) \
+static ssize_t show_##NAME(struct sys_device *dev, \
+		struct sysdev_attribute *attr, char *buf) \
+{ \
+	cpuinfo_sparc *c = &cpu_data(dev->id); \
+	return sprintf(buf, "%lu\n", c->MEMBER); \
+}
+
+#define SHOW_CPUDATA_UINT_NAME(NAME, MEMBER) \
+static ssize_t show_##NAME(struct sys_device *dev, \
+		struct sysdev_attribute *attr, char *buf) \
+{ \
+	cpuinfo_sparc *c = &cpu_data(dev->id); \
+	return sprintf(buf, "%u\n", c->MEMBER); \
+}
+
+SHOW_CPUDATA_ULONG_NAME(clock_tick, clock_tick);
+SHOW_CPUDATA_UINT_NAME(l1_dcache_size, dcache_size);
+SHOW_CPUDATA_UINT_NAME(l1_dcache_line_size, dcache_line_size);
+SHOW_CPUDATA_UINT_NAME(l1_icache_size, icache_size);
+SHOW_CPUDATA_UINT_NAME(l1_icache_line_size, icache_line_size);
+SHOW_CPUDATA_UINT_NAME(l2_cache_size, ecache_size);
+SHOW_CPUDATA_UINT_NAME(l2_cache_line_size, ecache_line_size);
+
+static struct sysdev_attribute cpu_core_attrs[] = {
+	_SYSDEV_ATTR(clock_tick,          0444, show_clock_tick, NULL),
+	_SYSDEV_ATTR(l1_dcache_size,      0444, show_l1_dcache_size, NULL),
+	_SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL),
+	_SYSDEV_ATTR(l1_icache_size,      0444, show_l1_icache_size, NULL),
+	_SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL),
+	_SYSDEV_ATTR(l2_cache_size,       0444, show_l2_cache_size, NULL),
+	_SYSDEV_ATTR(l2_cache_line_size,  0444, show_l2_cache_line_size, NULL),
+};
+
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static void register_cpu_online(unsigned int cpu)
+{
+	struct cpu *c = &per_cpu(cpu_devices, cpu);
+	struct sys_device *s = &c->sysdev;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
+		sysdev_create_file(s, &cpu_core_attrs[i]);
+
+	register_mmu_stats(s);
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+static void unregister_cpu_online(unsigned int cpu)
+{
+	struct cpu *c = &per_cpu(cpu_devices, cpu);
+	struct sys_device *s = &c->sysdev;
+	int i;
+
+	unregister_mmu_stats(s);
+	for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
+		sysdev_remove_file(s, &cpu_core_attrs[i]);
+}
+#endif
+
+static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
+				      unsigned long action, void *hcpu)
+{
+	unsigned int cpu = (unsigned int)(long)hcpu;
+
+	switch (action) {
+	case CPU_ONLINE:
+	case CPU_ONLINE_FROZEN:
+		register_cpu_online(cpu);
+		break;
+#ifdef CONFIG_HOTPLUG_CPU
+	case CPU_DEAD:
+	case CPU_DEAD_FROZEN:
+		unregister_cpu_online(cpu);
+		break;
+#endif
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
+	.notifier_call	= sysfs_cpu_notify,
+};
+
+static void __init check_mmu_stats(void)
+{
+	unsigned long dummy1, err;
+
+	if (tlb_type != hypervisor)
+		return;
+
+	err = sun4v_mmustat_info(&dummy1);
+	if (!err)
+		mmu_stats_supported = 1;
+}
+
+static void register_nodes(void)
+{
+#ifdef CONFIG_NUMA
+	int i;
+
+	for (i = 0; i < MAX_NUMNODES; i++)
+		register_one_node(i);
+#endif
+}
+
+static int __init topology_init(void)
+{
+	int cpu;
+
+	register_nodes();
+
+	check_mmu_stats();
+
+	register_cpu_notifier(&sysfs_cpu_nb);
+
+	for_each_possible_cpu(cpu) {
+		struct cpu *c = &per_cpu(cpu_devices, cpu);
+
+		register_cpu(c, cpu);
+		if (cpu_online(cpu))
+			register_cpu_online(cpu);
+	}
+
+	return 0;
+}
+
+subsys_initcall(topology_init);
diff --git a/arch/sparc/kernel/systbls.h b/arch/sparc/kernel/systbls.h
new file mode 100644
index 000000000000..bc9f5dac4069
--- /dev/null
+++ b/arch/sparc/kernel/systbls.h
@@ -0,0 +1,51 @@
+#ifndef _SYSTBLS_H
+#define _SYSTBLS_H
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/utsname.h>
+#include <asm/utrap.h>
+#include <asm/signal.h>
+
+extern asmlinkage unsigned long sys_getpagesize(void);
+extern asmlinkage unsigned long sparc_brk(unsigned long brk);
+extern asmlinkage long sparc_pipe(struct pt_regs *regs);
+extern asmlinkage long sys_ipc(unsigned int call, int first,
+			       unsigned long second,
+			       unsigned long third,
+			       void __user *ptr, long fifth);
+extern asmlinkage long sparc64_newuname(struct new_utsname __user *name);
+extern asmlinkage long sparc64_personality(unsigned long personality);
+extern asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
+					 unsigned long prot, unsigned long flags,
+					 unsigned long fd, unsigned long off);
+extern asmlinkage long sys64_munmap(unsigned long addr, size_t len);
+extern asmlinkage unsigned long sys64_mremap(unsigned long addr,
+					     unsigned long old_len,
+					     unsigned long new_len,
+					     unsigned long flags,
+					     unsigned long new_addr);
+extern asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs);
+extern asmlinkage long sys_getdomainname(char __user *name, int len);
+extern asmlinkage long sys_utrap_install(utrap_entry_t type,
+					 utrap_handler_t new_p,
+					 utrap_handler_t new_d,
+					 utrap_handler_t __user *old_p,
+					 utrap_handler_t __user *old_d);
+extern asmlinkage long sparc_memory_ordering(unsigned long model,
+					     struct pt_regs *regs);
+extern asmlinkage long sys_rt_sigaction(int sig,
+					const struct sigaction __user *act,
+					struct sigaction __user *oact,
+					void __user *restorer,
+					size_t sigsetsize);
+extern asmlinkage long sys_perfctr(int opcode, unsigned long arg0,
+				   unsigned long arg1, unsigned long arg2);
+
+extern asmlinkage void sparc64_set_context(struct pt_regs *regs);
+extern asmlinkage void sparc64_get_context(struct pt_regs *regs);
+extern asmlinkage long sys_sigpause(unsigned int set);
+extern asmlinkage long sys_sigsuspend(old_sigset_t set);
+extern void do_rt_sigreturn(struct pt_regs *regs);
+
+#endif /* _SYSTBLS_H */
diff --git a/arch/sparc/kernel/systbls.S b/arch/sparc/kernel/systbls_32.S
index 7d0807586442..7d0807586442 100644
--- a/arch/sparc/kernel/systbls.S
+++ b/arch/sparc/kernel/systbls_32.S
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
new file mode 100644
index 000000000000..9fc78cf354bd
--- /dev/null
+++ b/arch/sparc/kernel/systbls_64.S
@@ -0,0 +1,159 @@
+/* systbls.S: System call entry point tables for OS compatibility.
+ *            The native Linux system call table lives here also.
+ *
+ * Copyright (C) 1995, 1996, 2007 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ *
+ * Based upon preliminary work which is:
+ *
+ * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
+ */
+
+
+	.text
+	.align	4
+
+#ifdef CONFIG_COMPAT
+	/* First, the 32-bit Linux native syscall table. */
+
+	.globl sys_call_table32
+sys_call_table32:
+/*0*/	.word sys_restart_syscall, sys32_exit, sys_fork, sys_read, sys_write
+/*5*/	.word sys32_open, sys_close, sys32_wait4, sys32_creat, sys_link
+/*10*/  .word sys_unlink, sunos_execv, sys_chdir, sys_chown16, sys32_mknod
+/*15*/	.word sys_chmod, sys_lchown16, sparc_brk, sys32_perfctr, sys32_lseek
+/*20*/	.word sys_getpid, sys_capget, sys_capset, sys_setuid16, sys_getuid16
+/*25*/	.word sys32_vmsplice, compat_sys_ptrace, sys_alarm, sys32_sigaltstack, sys_pause
+/*30*/	.word compat_sys_utime, sys_lchown, sys_fchown, sys32_access, sys32_nice
+	.word sys_chown, sys_sync, sys32_kill, compat_sys_newstat, sys32_sendfile
+/*40*/	.word compat_sys_newlstat, sys_dup, sys_pipe, compat_sys_times, sys_getuid
+	.word sys32_umount, sys_setgid16, sys_getgid16, sys32_signal, sys_geteuid16
+/*50*/	.word sys_getegid16, sys_acct, sys_nis_syscall, sys_getgid, compat_sys_ioctl
+	.word sys32_reboot, sys32_mmap2, sys_symlink, sys32_readlink, sys32_execve
+/*60*/	.word sys32_umask, sys_chroot, compat_sys_newfstat, compat_sys_fstat64, sys_getpagesize
+	.word sys32_msync, sys_vfork, sys32_pread64, sys32_pwrite64, sys_geteuid
+/*70*/	.word sys_getegid, sys_mmap, sys_setreuid, sys_munmap, sys_mprotect
+	.word sys_madvise, sys_vhangup, sys32_truncate64, sys_mincore, sys_getgroups16
+/*80*/	.word sys_setgroups16, sys_getpgrp, sys32_setgroups, sys32_setitimer, sys32_ftruncate64
+	.word sys32_swapon, sys32_getitimer, sys_setuid, sys32_sethostname, sys_setgid
+/*90*/	.word sys_dup2, sys_setfsuid, compat_sys_fcntl, sys32_select, sys_setfsgid
+	.word sys_fsync, sys32_setpriority, sys_nis_syscall, sys_nis_syscall, sys_nis_syscall
+/*100*/ .word sys32_getpriority, sys32_rt_sigreturn, sys32_rt_sigaction, sys32_rt_sigprocmask, sys32_rt_sigpending
+	.word compat_sys_rt_sigtimedwait, sys32_rt_sigqueueinfo, compat_sys_rt_sigsuspend, sys_setresuid, sys_getresuid
+/*110*/	.word sys_setresgid, sys_getresgid, sys_setregid, sys_nis_syscall, sys_nis_syscall
+	.word sys32_getgroups, compat_sys_gettimeofday, sys32_getrusage, sys_nis_syscall, sys_getcwd
+/*120*/	.word compat_sys_readv, compat_sys_writev, compat_sys_settimeofday, sys_fchown16, sys_fchmod
+	.word sys_nis_syscall, sys_setreuid16, sys_setregid16, sys_rename, sys_truncate
+/*130*/	.word sys_ftruncate, sys_flock, compat_sys_lstat64, sys_nis_syscall, sys_nis_syscall
+	.word sys_nis_syscall, sys32_mkdir, sys_rmdir, compat_sys_utimes, compat_sys_stat64
+/*140*/	.word sys32_sendfile64, sys_nis_syscall, sys32_futex, sys_gettid, compat_sys_getrlimit
+	.word compat_sys_setrlimit, sys_pivot_root, sys32_prctl, sys_pciconfig_read, sys_pciconfig_write
+/*150*/	.word sys_nis_syscall, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
+	.word compat_sys_fcntl64, sys_inotify_rm_watch, compat_sys_statfs, compat_sys_fstatfs, sys_oldumount
+/*160*/	.word compat_sys_sched_setaffinity, compat_sys_sched_getaffinity, sys32_getdomainname, sys32_setdomainname, sys_nis_syscall
+	.word sys_quotactl, sys_set_tid_address, compat_sys_mount, sys_ustat, sys32_setxattr
+/*170*/	.word sys32_lsetxattr, sys32_fsetxattr, sys_getxattr, sys_lgetxattr, compat_sys_getdents
+	.word sys_setsid, sys_fchdir, sys32_fgetxattr, sys_listxattr, sys_llistxattr
+/*180*/	.word sys32_flistxattr, sys_removexattr, sys_lremovexattr, compat_sys_sigpending, sys_ni_syscall
+	.word sys32_setpgid, sys32_fremovexattr, sys32_tkill, sys32_exit_group, sparc64_newuname
+/*190*/	.word sys32_init_module, sparc64_personality, sys_remap_file_pages, sys32_epoll_create, sys32_epoll_ctl
+	.word sys32_epoll_wait, sys32_ioprio_set, sys_getppid, sys32_sigaction, sys_sgetmask
+/*200*/	.word sys32_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, compat_sys_old_readdir
+	.word sys32_readahead, sys32_socketcall, sys32_syslog, sys32_lookup_dcookie, sys32_fadvise64
+/*210*/	.word sys32_fadvise64_64, sys32_tgkill, sys32_waitpid, sys_swapoff, compat_sys_sysinfo
+	.word compat_sys_ipc, sys32_sigreturn, sys_clone, sys32_ioprio_get, compat_sys_adjtimex
+/*220*/	.word sys32_sigprocmask, sys_ni_syscall, sys32_delete_module, sys_ni_syscall, sys32_getpgid
+	.word sys32_bdflush, sys32_sysfs, sys_nis_syscall, sys_setfsuid16, sys_setfsgid16
+/*230*/	.word sys32_select, compat_sys_time, sys32_splice, compat_sys_stime, compat_sys_statfs64
+	.word compat_sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys32_mlockall
+/*240*/	.word sys_munlockall, sys32_sched_setparam, sys32_sched_getparam, sys32_sched_setscheduler, sys32_sched_getscheduler
+	.word sys_sched_yield, sys32_sched_get_priority_max, sys32_sched_get_priority_min, sys32_sched_rr_get_interval, compat_sys_nanosleep
+/*250*/	.word sys32_mremap, sys32_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl
+	.word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
+/*260*/	.word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun
+	.word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
+/*270*/	.word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink
+	.word compat_sys_mq_timedsend, compat_sys_mq_timedreceive, compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid
+/*280*/	.word sys32_tee, sys_add_key, sys_request_key, sys_keyctl, compat_sys_openat
+	.word sys_mkdirat, sys_mknodat, sys_fchownat, compat_sys_futimesat, compat_sys_fstatat64
+/*290*/	.word sys_unlinkat, sys_renameat, sys_linkat, sys_symlinkat, sys_readlinkat
+	.word sys_fchmodat, sys_faccessat, compat_sys_pselect6, compat_sys_ppoll, sys_unshare
+/*300*/	.word compat_sys_set_robust_list, compat_sys_get_robust_list, compat_sys_migrate_pages, compat_sys_mbind, compat_sys_get_mempolicy
+	.word compat_sys_set_mempolicy, compat_sys_kexec_load, compat_sys_move_pages, sys_getcpu, compat_sys_epoll_pwait
+/*310*/	.word compat_sys_utimensat, compat_sys_signalfd, sys_timerfd_create, sys_eventfd, compat_sys_fallocate
+	.word compat_sys_timerfd_settime, compat_sys_timerfd_gettime, compat_sys_signalfd4, sys_eventfd2, sys_epoll_create1
+/*320*/	.word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4
+
+#endif /* CONFIG_COMPAT */
+
+	/* Now the 64-bit native Linux syscall table. */
+
+	.align	4
+	.globl sys_call_table64, sys_call_table
+sys_call_table64:
+sys_call_table:
+/*0*/	.word sys_restart_syscall, sparc_exit, sys_fork, sys_read, sys_write
+/*5*/	.word sys_open, sys_close, sys_wait4, sys_creat, sys_link
+/*10*/  .word sys_unlink, sys_nis_syscall, sys_chdir, sys_chown, sys_mknod
+/*15*/	.word sys_chmod, sys_lchown, sparc_brk, sys_perfctr, sys_lseek
+/*20*/	.word sys_getpid, sys_capget, sys_capset, sys_setuid, sys_getuid
+/*25*/	.word sys_vmsplice, sys_ptrace, sys_alarm, sys_sigaltstack, sys_nis_syscall
+/*30*/	.word sys_utime, sys_nis_syscall, sys_nis_syscall, sys_access, sys_nice
+	.word sys_nis_syscall, sys_sync, sys_kill, sys_newstat, sys_sendfile64
+/*40*/	.word sys_newlstat, sys_dup, sys_pipe, sys_times, sys_nis_syscall
+	.word sys_umount, sys_setgid, sys_getgid, sys_signal, sys_geteuid
+/*50*/	.word sys_getegid, sys_acct, sys_memory_ordering, sys_nis_syscall, sys_ioctl
+	.word sys_reboot, sys_nis_syscall, sys_symlink, sys_readlink, sys_execve
+/*60*/	.word sys_umask, sys_chroot, sys_newfstat, sys_fstat64, sys_getpagesize
+	.word sys_msync, sys_vfork, sys_pread64, sys_pwrite64, sys_nis_syscall
+/*70*/	.word sys_nis_syscall, sys_mmap, sys_nis_syscall, sys64_munmap, sys_mprotect
+	.word sys_madvise, sys_vhangup, sys_nis_syscall, sys_mincore, sys_getgroups
+/*80*/	.word sys_setgroups, sys_getpgrp, sys_nis_syscall, sys_setitimer, sys_nis_syscall
+	.word sys_swapon, sys_getitimer, sys_nis_syscall, sys_sethostname, sys_nis_syscall
+/*90*/	.word sys_dup2, sys_nis_syscall, sys_fcntl, sys_select, sys_nis_syscall
+	.word sys_fsync, sys_setpriority, sys_socket, sys_connect, sys_accept
+/*100*/	.word sys_getpriority, sys_rt_sigreturn, sys_rt_sigaction, sys_rt_sigprocmask, sys_rt_sigpending
+	.word sys_rt_sigtimedwait, sys_rt_sigqueueinfo, sys_rt_sigsuspend, sys_setresuid, sys_getresuid
+/*110*/	.word sys_setresgid, sys_getresgid, sys_nis_syscall, sys_recvmsg, sys_sendmsg
+	.word sys_nis_syscall, sys_gettimeofday, sys_getrusage, sys_getsockopt, sys_getcwd
+/*120*/	.word sys_readv, sys_writev, sys_settimeofday, sys_fchown, sys_fchmod
+	.word sys_recvfrom, sys_setreuid, sys_setregid, sys_rename, sys_truncate
+/*130*/	.word sys_ftruncate, sys_flock, sys_lstat64, sys_sendto, sys_shutdown
+	.word sys_socketpair, sys_mkdir, sys_rmdir, sys_utimes, sys_stat64
+/*140*/	.word sys_sendfile64, sys_getpeername, sys_futex, sys_gettid, sys_getrlimit
+	.word sys_setrlimit, sys_pivot_root, sys_prctl, sys_pciconfig_read, sys_pciconfig_write
+/*150*/	.word sys_getsockname, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
+	.word sys_nis_syscall, sys_inotify_rm_watch, sys_statfs, sys_fstatfs, sys_oldumount
+/*160*/	.word sys_sched_setaffinity, sys_sched_getaffinity, sys_getdomainname, sys_setdomainname, sys_utrap_install
+	.word sys_quotactl, sys_set_tid_address, sys_mount, sys_ustat, sys_setxattr
+/*170*/	.word sys_lsetxattr, sys_fsetxattr, sys_getxattr, sys_lgetxattr, sys_getdents
+	.word sys_setsid, sys_fchdir, sys_fgetxattr, sys_listxattr, sys_llistxattr
+/*180*/	.word sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_nis_syscall, sys_ni_syscall
+	.word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sparc64_newuname
+/*190*/	.word sys_init_module, sparc64_personality, sys_remap_file_pages, sys_epoll_create, sys_epoll_ctl
+	.word sys_epoll_wait, sys_ioprio_set, sys_getppid, sys_nis_syscall, sys_sgetmask
+/*200*/	.word sys_ssetmask, sys_nis_syscall, sys_newlstat, sys_uselib, sys_nis_syscall
+	.word sys_readahead, sys_socketcall, sys_syslog, sys_lookup_dcookie, sys_fadvise64
+/*210*/	.word sys_fadvise64_64, sys_tgkill, sys_waitpid, sys_swapoff, sys_sysinfo
+	.word sys_ipc, sys_nis_syscall, sys_clone, sys_ioprio_get, sys_adjtimex
+/*220*/	.word sys_nis_syscall, sys_ni_syscall, sys_delete_module, sys_ni_syscall, sys_getpgid
+	.word sys_bdflush, sys_sysfs, sys_nis_syscall, sys_setfsuid, sys_setfsgid
+/*230*/	.word sys_select, sys_nis_syscall, sys_splice, sys_stime, sys_statfs64
+	.word sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys_mlockall
+/*240*/	.word sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
+	.word sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep
+/*250*/	.word sys64_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl
+	.word sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
+/*260*/	.word sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
+	.word sys_timer_delete, sys_timer_create, sys_ni_syscall, sys_io_setup, sys_io_destroy
+/*270*/	.word sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
+	.word sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
+/*280*/	.word sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
+	.word sys_mkdirat, sys_mknodat, sys_fchownat, sys_futimesat, sys_fstatat64
+/*290*/	.word sys_unlinkat, sys_renameat, sys_linkat, sys_symlinkat, sys_readlinkat
+	.word sys_fchmodat, sys_faccessat, sys_pselect6, sys_ppoll, sys_unshare
+/*300*/	.word sys_set_robust_list, sys_get_robust_list, sys_migrate_pages, sys_mbind, sys_get_mempolicy
+	.word sys_set_mempolicy, sys_kexec_load, sys_move_pages, sys_getcpu, sys_epoll_pwait
+/*310*/	.word sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate
+	.word sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1
+/*320*/	.word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4
diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time_32.c
index 00f7383c7657..00f7383c7657 100644
--- a/arch/sparc/kernel/time.c
+++ b/arch/sparc/kernel/time_32.c
diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
new file mode 100644
index 000000000000..9df8f095a8b1
--- /dev/null
+++ b/arch/sparc/kernel/time_64.c
@@ -0,0 +1,862 @@
+/* time.c: UltraSparc timer and TOD clock support.
+ *
+ * Copyright (C) 1997, 2008 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1998 Eddie C. Dost   (ecd@skynet.be)
+ *
+ * Based largely on code which is:
+ *
+ * Copyright (C) 1996 Thomas K. Dyas (tdyas@eden.rutgers.edu)
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+#include <linux/timex.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/mc146818rtc.h>
+#include <linux/delay.h>
+#include <linux/profile.h>
+#include <linux/bcd.h>
+#include <linux/jiffies.h>
+#include <linux/cpufreq.h>
+#include <linux/percpu.h>
+#include <linux/miscdevice.h>
+#include <linux/rtc.h>
+#include <linux/rtc/m48t59.h>
+#include <linux/kernel_stat.h>
+#include <linux/clockchips.h>
+#include <linux/clocksource.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include <asm/oplib.h>
+#include <asm/timer.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/starfire.h>
+#include <asm/smp.h>
+#include <asm/sections.h>
+#include <asm/cpudata.h>
+#include <asm/uaccess.h>
+#include <asm/irq_regs.h>
+
+#include "entry.h"
+
+DEFINE_SPINLOCK(rtc_lock);
+
+#define TICK_PRIV_BIT	(1UL << 63)
+#define TICKCMP_IRQ_BIT	(1UL << 63)
+
+#ifdef CONFIG_SMP
+unsigned long profile_pc(struct pt_regs *regs)
+{
+	unsigned long pc = instruction_pointer(regs);
+
+	if (in_lock_functions(pc))
+		return regs->u_regs[UREG_RETPC];
+	return pc;
+}
+EXPORT_SYMBOL(profile_pc);
+#endif
+
+static void tick_disable_protection(void)
+{
+	/* Set things up so user can access tick register for profiling
+	 * purposes.  Also workaround BB_ERRATA_1 by doing a dummy
+	 * read back of %tick after writing it.
+	 */
+	__asm__ __volatile__(
+	"	ba,pt	%%xcc, 1f\n"
+	"	 nop\n"
+	"	.align	64\n"
+	"1:	rd	%%tick, %%g2\n"
+	"	add	%%g2, 6, %%g2\n"
+	"	andn	%%g2, %0, %%g2\n"
+	"	wrpr	%%g2, 0, %%tick\n"
+	"	rdpr	%%tick, %%g0"
+	: /* no outputs */
+	: "r" (TICK_PRIV_BIT)
+	: "g2");
+}
+
+static void tick_disable_irq(void)
+{
+	__asm__ __volatile__(
+	"	ba,pt	%%xcc, 1f\n"
+	"	 nop\n"
+	"	.align	64\n"
+	"1:	wr	%0, 0x0, %%tick_cmpr\n"
+	"	rd	%%tick_cmpr, %%g0"
+	: /* no outputs */
+	: "r" (TICKCMP_IRQ_BIT));
+}
+
+static void tick_init_tick(void)
+{
+	tick_disable_protection();
+	tick_disable_irq();
+}
+
+static unsigned long tick_get_tick(void)
+{
+	unsigned long ret;
+
+	__asm__ __volatile__("rd	%%tick, %0\n\t"
+			     "mov	%0, %0"
+			     : "=r" (ret));
+
+	return ret & ~TICK_PRIV_BIT;
+}
+
+static int tick_add_compare(unsigned long adj)
+{
+	unsigned long orig_tick, new_tick, new_compare;
+
+	__asm__ __volatile__("rd	%%tick, %0"
+			     : "=r" (orig_tick));
+
+	orig_tick &= ~TICKCMP_IRQ_BIT;
+
+	/* Workaround for Spitfire Errata (#54 I think??), I discovered
+	 * this via Sun BugID 4008234, mentioned in Solaris-2.5.1 patch
+	 * number 103640.
+	 *
+	 * On Blackbird writes to %tick_cmpr can fail, the
+	 * workaround seems to be to execute the wr instruction
+	 * at the start of an I-cache line, and perform a dummy
+	 * read back from %tick_cmpr right after writing to it. -DaveM
+	 */
+	__asm__ __volatile__("ba,pt	%%xcc, 1f\n\t"
+			     " add	%1, %2, %0\n\t"
+			     ".align	64\n"
+			     "1:\n\t"
+			     "wr	%0, 0, %%tick_cmpr\n\t"
+			     "rd	%%tick_cmpr, %%g0\n\t"
+			     : "=r" (new_compare)
+			     : "r" (orig_tick), "r" (adj));
+
+	__asm__ __volatile__("rd	%%tick, %0"
+			     : "=r" (new_tick));
+	new_tick &= ~TICKCMP_IRQ_BIT;
+
+	return ((long)(new_tick - (orig_tick+adj))) > 0L;
+}
+
+static unsigned long tick_add_tick(unsigned long adj)
+{
+	unsigned long new_tick;
+
+	/* Also need to handle Blackbird bug here too. */
+	__asm__ __volatile__("rd	%%tick, %0\n\t"
+			     "add	%0, %1, %0\n\t"
+			     "wrpr	%0, 0, %%tick\n\t"
+			     : "=&r" (new_tick)
+			     : "r" (adj));
+
+	return new_tick;
+}
+
+static struct sparc64_tick_ops tick_operations __read_mostly = {
+	.name		=	"tick",
+	.init_tick	=	tick_init_tick,
+	.disable_irq	=	tick_disable_irq,
+	.get_tick	=	tick_get_tick,
+	.add_tick	=	tick_add_tick,
+	.add_compare	=	tick_add_compare,
+	.softint_mask	=	1UL << 0,
+};
+
+struct sparc64_tick_ops *tick_ops __read_mostly = &tick_operations;
+
+static void stick_disable_irq(void)
+{
+	__asm__ __volatile__(
+	"wr	%0, 0x0, %%asr25"
+	: /* no outputs */
+	: "r" (TICKCMP_IRQ_BIT));
+}
+
+static void stick_init_tick(void)
+{
+	/* Writes to the %tick and %stick register are not
+	 * allowed on sun4v.  The Hypervisor controls that
+	 * bit, per-strand.
+	 */
+	if (tlb_type != hypervisor) {
+		tick_disable_protection();
+		tick_disable_irq();
+
+		/* Let the user get at STICK too. */
+		__asm__ __volatile__(
+		"	rd	%%asr24, %%g2\n"
+		"	andn	%%g2, %0, %%g2\n"
+		"	wr	%%g2, 0, %%asr24"
+		: /* no outputs */
+		: "r" (TICK_PRIV_BIT)
+		: "g1", "g2");
+	}
+
+	stick_disable_irq();
+}
+
+static unsigned long stick_get_tick(void)
+{
+	unsigned long ret;
+
+	__asm__ __volatile__("rd	%%asr24, %0"
+			     : "=r" (ret));
+
+	return ret & ~TICK_PRIV_BIT;
+}
+
+static unsigned long stick_add_tick(unsigned long adj)
+{
+	unsigned long new_tick;
+
+	__asm__ __volatile__("rd	%%asr24, %0\n\t"
+			     "add	%0, %1, %0\n\t"
+			     "wr	%0, 0, %%asr24\n\t"
+			     : "=&r" (new_tick)
+			     : "r" (adj));
+
+	return new_tick;
+}
+
+static int stick_add_compare(unsigned long adj)
+{
+	unsigned long orig_tick, new_tick;
+
+	__asm__ __volatile__("rd	%%asr24, %0"
+			     : "=r" (orig_tick));
+	orig_tick &= ~TICKCMP_IRQ_BIT;
+
+	__asm__ __volatile__("wr	%0, 0, %%asr25"
+			     : /* no outputs */
+			     : "r" (orig_tick + adj));
+
+	__asm__ __volatile__("rd	%%asr24, %0"
+			     : "=r" (new_tick));
+	new_tick &= ~TICKCMP_IRQ_BIT;
+
+	return ((long)(new_tick - (orig_tick+adj))) > 0L;
+}
+
+static struct sparc64_tick_ops stick_operations __read_mostly = {
+	.name		=	"stick",
+	.init_tick	=	stick_init_tick,
+	.disable_irq	=	stick_disable_irq,
+	.get_tick	=	stick_get_tick,
+	.add_tick	=	stick_add_tick,
+	.add_compare	=	stick_add_compare,
+	.softint_mask	=	1UL << 16,
+};
+
+/* On Hummingbird the STICK/STICK_CMPR register is implemented
+ * in I/O space.  There are two 64-bit registers each, the
+ * first holds the low 32-bits of the value and the second holds
+ * the high 32-bits.
+ *
+ * Since STICK is constantly updating, we have to access it carefully.
+ *
+ * The sequence we use to read is:
+ * 1) read high
+ * 2) read low
+ * 3) read high again, if it rolled re-read both low and high again.
+ *
+ * Writing STICK safely is also tricky:
+ * 1) write low to zero
+ * 2) write high
+ * 3) write low
+ */
+#define HBIRD_STICKCMP_ADDR	0x1fe0000f060UL
+#define HBIRD_STICK_ADDR	0x1fe0000f070UL
+
+static unsigned long __hbird_read_stick(void)
+{
+	unsigned long ret, tmp1, tmp2, tmp3;
+	unsigned long addr = HBIRD_STICK_ADDR+8;
+
+	__asm__ __volatile__("ldxa	[%1] %5, %2\n"
+			     "1:\n\t"
+			     "sub	%1, 0x8, %1\n\t"
+			     "ldxa	[%1] %5, %3\n\t"
+			     "add	%1, 0x8, %1\n\t"
+			     "ldxa	[%1] %5, %4\n\t"
+			     "cmp	%4, %2\n\t"
+			     "bne,a,pn	%%xcc, 1b\n\t"
+			     " mov	%4, %2\n\t"
+			     "sllx	%4, 32, %4\n\t"
+			     "or	%3, %4, %0\n\t"
+			     : "=&r" (ret), "=&r" (addr),
+			       "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3)
+			     : "i" (ASI_PHYS_BYPASS_EC_E), "1" (addr));
+
+	return ret;
+}
+
+static void __hbird_write_stick(unsigned long val)
+{
+	unsigned long low = (val & 0xffffffffUL);
+	unsigned long high = (val >> 32UL);
+	unsigned long addr = HBIRD_STICK_ADDR;
+
+	__asm__ __volatile__("stxa	%%g0, [%0] %4\n\t"
+			     "add	%0, 0x8, %0\n\t"
+			     "stxa	%3, [%0] %4\n\t"
+			     "sub	%0, 0x8, %0\n\t"
+			     "stxa	%2, [%0] %4"
+			     : "=&r" (addr)
+			     : "0" (addr), "r" (low), "r" (high),
+			       "i" (ASI_PHYS_BYPASS_EC_E));
+}
+
+static void __hbird_write_compare(unsigned long val)
+{
+	unsigned long low = (val & 0xffffffffUL);
+	unsigned long high = (val >> 32UL);
+	unsigned long addr = HBIRD_STICKCMP_ADDR + 0x8UL;
+
+	__asm__ __volatile__("stxa	%3, [%0] %4\n\t"
+			     "sub	%0, 0x8, %0\n\t"
+			     "stxa	%2, [%0] %4"
+			     : "=&r" (addr)
+			     : "0" (addr), "r" (low), "r" (high),
+			       "i" (ASI_PHYS_BYPASS_EC_E));
+}
+
+static void hbtick_disable_irq(void)
+{
+	__hbird_write_compare(TICKCMP_IRQ_BIT);
+}
+
+static void hbtick_init_tick(void)
+{
+	tick_disable_protection();
+
+	/* XXX This seems to be necessary to 'jumpstart' Hummingbird
+	 * XXX into actually sending STICK interrupts.  I think because
+	 * XXX of how we store %tick_cmpr in head.S this somehow resets the
+	 * XXX {TICK + STICK} interrupt mux.  -DaveM
+	 */
+	__hbird_write_stick(__hbird_read_stick());
+
+	hbtick_disable_irq();
+}
+
+static unsigned long hbtick_get_tick(void)
+{
+	return __hbird_read_stick() & ~TICK_PRIV_BIT;
+}
+
+static unsigned long hbtick_add_tick(unsigned long adj)
+{
+	unsigned long val;
+
+	val = __hbird_read_stick() + adj;
+	__hbird_write_stick(val);
+
+	return val;
+}
+
+static int hbtick_add_compare(unsigned long adj)
+{
+	unsigned long val = __hbird_read_stick();
+	unsigned long val2;
+
+	val &= ~TICKCMP_IRQ_BIT;
+	val += adj;
+	__hbird_write_compare(val);
+
+	val2 = __hbird_read_stick() & ~TICKCMP_IRQ_BIT;
+
+	return ((long)(val2 - val)) > 0L;
+}
+
+static struct sparc64_tick_ops hbtick_operations __read_mostly = {
+	.name		=	"hbtick",
+	.init_tick	=	hbtick_init_tick,
+	.disable_irq	=	hbtick_disable_irq,
+	.get_tick	=	hbtick_get_tick,
+	.add_tick	=	hbtick_add_tick,
+	.add_compare	=	hbtick_add_compare,
+	.softint_mask	=	1UL << 0,
+};
+
+static unsigned long timer_ticks_per_nsec_quotient __read_mostly;
+
+int update_persistent_clock(struct timespec now)
+{
+	struct rtc_device *rtc = rtc_class_open("rtc0");
+	int err = -1;
+
+	if (rtc) {
+		err = rtc_set_mmss(rtc, now.tv_sec);
+		rtc_class_close(rtc);
+	}
+
+	return err;
+}
+
+unsigned long cmos_regs;
+EXPORT_SYMBOL(cmos_regs);
+
+static struct resource rtc_cmos_resource;
+
+static struct platform_device rtc_cmos_device = {
+	.name		= "rtc_cmos",
+	.id		= -1,
+	.resource	= &rtc_cmos_resource,
+	.num_resources	= 1,
+};
+
+static int __devinit rtc_probe(struct of_device *op, const struct of_device_id *match)
+{
+	struct resource *r;
+
+	printk(KERN_INFO "%s: RTC regs at 0x%lx\n",
+	       op->node->full_name, op->resource[0].start);
+
+	/* The CMOS RTC driver only accepts IORESOURCE_IO, so cons
+	 * up a fake resource so that the probe works for all cases.
+	 * When the RTC is behind an ISA bus it will have IORESOURCE_IO
+	 * already, whereas when it's behind EBUS is will be IORESOURCE_MEM.
+	 */
+
+	r = &rtc_cmos_resource;
+	r->flags = IORESOURCE_IO;
+	r->name = op->resource[0].name;
+	r->start = op->resource[0].start;
+	r->end = op->resource[0].end;
+
+	cmos_regs = op->resource[0].start;
+	return platform_device_register(&rtc_cmos_device);
+}
+
+static struct of_device_id __initdata rtc_match[] = {
+	{
+		.name = "rtc",
+		.compatible = "m5819",
+	},
+	{
+		.name = "rtc",
+		.compatible = "isa-m5819p",
+	},
+	{
+		.name = "rtc",
+		.compatible = "isa-m5823p",
+	},
+	{
+		.name = "rtc",
+		.compatible = "ds1287",
+	},
+	{},
+};
+
+static struct of_platform_driver rtc_driver = {
+	.match_table	= rtc_match,
+	.probe		= rtc_probe,
+	.driver		= {
+		.name	= "rtc",
+	},
+};
+
+static struct platform_device rtc_bq4802_device = {
+	.name		= "rtc-bq4802",
+	.id		= -1,
+	.num_resources	= 1,
+};
+
+static int __devinit bq4802_probe(struct of_device *op, const struct of_device_id *match)
+{
+
+	printk(KERN_INFO "%s: BQ4802 regs at 0x%lx\n",
+	       op->node->full_name, op->resource[0].start);
+
+	rtc_bq4802_device.resource = &op->resource[0];
+	return platform_device_register(&rtc_bq4802_device);
+}
+
+static struct of_device_id __initdata bq4802_match[] = {
+	{
+		.name = "rtc",
+		.compatible = "bq4802",
+	},
+	{},
+};
+
+static struct of_platform_driver bq4802_driver = {
+	.match_table	= bq4802_match,
+	.probe		= bq4802_probe,
+	.driver		= {
+		.name	= "bq4802",
+	},
+};
+
+static unsigned char mostek_read_byte(struct device *dev, u32 ofs)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	void __iomem *regs = (void __iomem *) pdev->resource[0].start;
+
+	return readb(regs + ofs);
+}
+
+static void mostek_write_byte(struct device *dev, u32 ofs, u8 val)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	void __iomem *regs = (void __iomem *) pdev->resource[0].start;
+
+	writeb(val, regs + ofs);
+}
+
+static struct m48t59_plat_data m48t59_data = {
+	.read_byte	= mostek_read_byte,
+	.write_byte	= mostek_write_byte,
+};
+
+static struct platform_device m48t59_rtc = {
+	.name		= "rtc-m48t59",
+	.id		= 0,
+	.num_resources	= 1,
+	.dev	= {
+		.platform_data = &m48t59_data,
+	},
+};
+
+static int __devinit mostek_probe(struct of_device *op, const struct of_device_id *match)
+{
+	struct device_node *dp = op->node;
+
+	/* On an Enterprise system there can be multiple mostek clocks.
+	 * We should only match the one that is on the central FHC bus.
+	 */
+	if (!strcmp(dp->parent->name, "fhc") &&
+	    strcmp(dp->parent->parent->name, "central") != 0)
+		return -ENODEV;
+
+	printk(KERN_INFO "%s: Mostek regs at 0x%lx\n",
+	       dp->full_name, op->resource[0].start);
+
+	m48t59_rtc.resource = &op->resource[0];
+	return platform_device_register(&m48t59_rtc);
+}
+
+static struct of_device_id __initdata mostek_match[] = {
+	{
+		.name = "eeprom",
+	},
+	{},
+};
+
+static struct of_platform_driver mostek_driver = {
+	.match_table	= mostek_match,
+	.probe		= mostek_probe,
+	.driver		= {
+		.name	= "mostek",
+	},
+};
+
+static struct platform_device rtc_sun4v_device = {
+	.name		= "rtc-sun4v",
+	.id		= -1,
+};
+
+static struct platform_device rtc_starfire_device = {
+	.name		= "rtc-starfire",
+	.id		= -1,
+};
+
+static int __init clock_init(void)
+{
+	if (this_is_starfire)
+		return platform_device_register(&rtc_starfire_device);
+
+	if (tlb_type == hypervisor)
+		return platform_device_register(&rtc_sun4v_device);
+
+	(void) of_register_driver(&rtc_driver, &of_platform_bus_type);
+	(void) of_register_driver(&mostek_driver, &of_platform_bus_type);
+	(void) of_register_driver(&bq4802_driver, &of_platform_bus_type);
+
+	return 0;
+}
+
+/* Must be after subsys_initcall() so that busses are probed.  Must
+ * be before device_initcall() because things like the RTC driver
+ * need to see the clock registers.
+ */
+fs_initcall(clock_init);
+
+/* This is gets the master TICK_INT timer going. */
+static unsigned long sparc64_init_timers(void)
+{
+	struct device_node *dp;
+	unsigned long freq;
+
+	dp = of_find_node_by_path("/");
+	if (tlb_type == spitfire) {
+		unsigned long ver, manuf, impl;
+
+		__asm__ __volatile__ ("rdpr %%ver, %0"
+				      : "=&r" (ver));
+		manuf = ((ver >> 48) & 0xffff);
+		impl = ((ver >> 32) & 0xffff);
+		if (manuf == 0x17 && impl == 0x13) {
+			/* Hummingbird, aka Ultra-IIe */
+			tick_ops = &hbtick_operations;
+			freq = of_getintprop_default(dp, "stick-frequency", 0);
+		} else {
+			tick_ops = &tick_operations;
+			freq = local_cpu_data().clock_tick;
+		}
+	} else {
+		tick_ops = &stick_operations;
+		freq = of_getintprop_default(dp, "stick-frequency", 0);
+	}
+
+	return freq;
+}
+
+struct freq_table {
+	unsigned long clock_tick_ref;
+	unsigned int ref_freq;
+};
+static DEFINE_PER_CPU(struct freq_table, sparc64_freq_table) = { 0, 0 };
+
+unsigned long sparc64_get_clock_tick(unsigned int cpu)
+{
+	struct freq_table *ft = &per_cpu(sparc64_freq_table, cpu);
+
+	if (ft->clock_tick_ref)
+		return ft->clock_tick_ref;
+	return cpu_data(cpu).clock_tick;
+}
+
+#ifdef CONFIG_CPU_FREQ
+
+static int sparc64_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
+				    void *data)
+{
+	struct cpufreq_freqs *freq = data;
+	unsigned int cpu = freq->cpu;
+	struct freq_table *ft = &per_cpu(sparc64_freq_table, cpu);
+
+	if (!ft->ref_freq) {
+		ft->ref_freq = freq->old;
+		ft->clock_tick_ref = cpu_data(cpu).clock_tick;
+	}
+	if ((val == CPUFREQ_PRECHANGE  && freq->old < freq->new) ||
+	    (val == CPUFREQ_POSTCHANGE && freq->old > freq->new) ||
+	    (val == CPUFREQ_RESUMECHANGE)) {
+		cpu_data(cpu).clock_tick =
+			cpufreq_scale(ft->clock_tick_ref,
+				      ft->ref_freq,
+				      freq->new);
+	}
+
+	return 0;
+}
+
+static struct notifier_block sparc64_cpufreq_notifier_block = {
+	.notifier_call	= sparc64_cpufreq_notifier
+};
+
+static int __init register_sparc64_cpufreq_notifier(void)
+{
+
+	cpufreq_register_notifier(&sparc64_cpufreq_notifier_block,
+				  CPUFREQ_TRANSITION_NOTIFIER);
+	return 0;
+}
+
+core_initcall(register_sparc64_cpufreq_notifier);
+
+#endif /* CONFIG_CPU_FREQ */
+
+static int sparc64_next_event(unsigned long delta,
+			      struct clock_event_device *evt)
+{
+	return tick_ops->add_compare(delta) ? -ETIME : 0;
+}
+
+static void sparc64_timer_setup(enum clock_event_mode mode,
+				struct clock_event_device *evt)
+{
+	switch (mode) {
+	case CLOCK_EVT_MODE_ONESHOT:
+	case CLOCK_EVT_MODE_RESUME:
+		break;
+
+	case CLOCK_EVT_MODE_SHUTDOWN:
+		tick_ops->disable_irq();
+		break;
+
+	case CLOCK_EVT_MODE_PERIODIC:
+	case CLOCK_EVT_MODE_UNUSED:
+		WARN_ON(1);
+		break;
+	};
+}
+
+static struct clock_event_device sparc64_clockevent = {
+	.features	= CLOCK_EVT_FEAT_ONESHOT,
+	.set_mode	= sparc64_timer_setup,
+	.set_next_event	= sparc64_next_event,
+	.rating		= 100,
+	.shift		= 30,
+	.irq		= -1,
+};
+static DEFINE_PER_CPU(struct clock_event_device, sparc64_events);
+
+void timer_interrupt(int irq, struct pt_regs *regs)
+{
+	struct pt_regs *old_regs = set_irq_regs(regs);
+	unsigned long tick_mask = tick_ops->softint_mask;
+	int cpu = smp_processor_id();
+	struct clock_event_device *evt = &per_cpu(sparc64_events, cpu);
+
+	clear_softint(tick_mask);
+
+	irq_enter();
+
+	kstat_this_cpu.irqs[0]++;
+
+	if (unlikely(!evt->event_handler)) {
+		printk(KERN_WARNING
+		       "Spurious SPARC64 timer interrupt on cpu %d\n", cpu);
+	} else
+		evt->event_handler(evt);
+
+	irq_exit();
+
+	set_irq_regs(old_regs);
+}
+
+void __devinit setup_sparc64_timer(void)
+{
+	struct clock_event_device *sevt;
+	unsigned long pstate;
+
+	/* Guarantee that the following sequences execute
+	 * uninterrupted.
+	 */
+	__asm__ __volatile__("rdpr	%%pstate, %0\n\t"
+			     "wrpr	%0, %1, %%pstate"
+			     : "=r" (pstate)
+			     : "i" (PSTATE_IE));
+
+	tick_ops->init_tick();
+
+	/* Restore PSTATE_IE. */
+	__asm__ __volatile__("wrpr	%0, 0x0, %%pstate"
+			     : /* no outputs */
+			     : "r" (pstate));
+
+	sevt = &__get_cpu_var(sparc64_events);
+
+	memcpy(sevt, &sparc64_clockevent, sizeof(*sevt));
+	sevt->cpumask = cpumask_of(smp_processor_id());
+
+	clockevents_register_device(sevt);
+}
+
+#define SPARC64_NSEC_PER_CYC_SHIFT	10UL
+
+static struct clocksource clocksource_tick = {
+	.rating		= 100,
+	.mask		= CLOCKSOURCE_MASK(64),
+	.shift		= 16,
+	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+static void __init setup_clockevent_multiplier(unsigned long hz)
+{
+	unsigned long mult, shift = 32;
+
+	while (1) {
+		mult = div_sc(hz, NSEC_PER_SEC, shift);
+		if (mult && (mult >> 32UL) == 0UL)
+			break;
+
+		shift--;
+	}
+
+	sparc64_clockevent.shift = shift;
+	sparc64_clockevent.mult = mult;
+}
+
+static unsigned long tb_ticks_per_usec __read_mostly;
+
+void __delay(unsigned long loops)
+{
+	unsigned long bclock, now;
+
+	bclock = tick_ops->get_tick();
+	do {
+		now = tick_ops->get_tick();
+	} while ((now-bclock) < loops);
+}
+EXPORT_SYMBOL(__delay);
+
+void udelay(unsigned long usecs)
+{
+	__delay(tb_ticks_per_usec * usecs);
+}
+EXPORT_SYMBOL(udelay);
+
+void __init time_init(void)
+{
+	unsigned long freq = sparc64_init_timers();
+
+	tb_ticks_per_usec = freq / USEC_PER_SEC;
+
+	timer_ticks_per_nsec_quotient =
+		clocksource_hz2mult(freq, SPARC64_NSEC_PER_CYC_SHIFT);
+
+	clocksource_tick.name = tick_ops->name;
+	clocksource_tick.mult =
+		clocksource_hz2mult(freq,
+				    clocksource_tick.shift);
+	clocksource_tick.read = tick_ops->get_tick;
+
+	printk("clocksource: mult[%x] shift[%d]\n",
+	       clocksource_tick.mult, clocksource_tick.shift);
+
+	clocksource_register(&clocksource_tick);
+
+	sparc64_clockevent.name = tick_ops->name;
+
+	setup_clockevent_multiplier(freq);
+
+	sparc64_clockevent.max_delta_ns =
+		clockevent_delta2ns(0x7fffffffffffffffUL, &sparc64_clockevent);
+	sparc64_clockevent.min_delta_ns =
+		clockevent_delta2ns(0xF, &sparc64_clockevent);
+
+	printk("clockevent: mult[%lx] shift[%d]\n",
+	       sparc64_clockevent.mult, sparc64_clockevent.shift);
+
+	setup_sparc64_timer();
+}
+
+unsigned long long sched_clock(void)
+{
+	unsigned long ticks = tick_ops->get_tick();
+
+	return (ticks * timer_ticks_per_nsec_quotient)
+		>> SPARC64_NSEC_PER_CYC_SHIFT;
+}
+
+int __devinit read_current_timer(unsigned long *timer_val)
+{
+	*timer_val = tick_ops->get_tick();
+	return 0;
+}
diff --git a/arch/sparc/kernel/trampoline.S b/arch/sparc/kernel/trampoline_32.S
index 5e235c52d667..5e235c52d667 100644
--- a/arch/sparc/kernel/trampoline.S
+++ b/arch/sparc/kernel/trampoline_32.S
diff --git a/arch/sparc/kernel/trampoline_64.S b/arch/sparc/kernel/trampoline_64.S
new file mode 100644
index 000000000000..da1b781b5e65
--- /dev/null
+++ b/arch/sparc/kernel/trampoline_64.S
@@ -0,0 +1,417 @@
+/*
+ * trampoline.S: Jump start slave processors on sparc64.
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/init.h>
+
+#include <asm/head.h>
+#include <asm/asi.h>
+#include <asm/lsu.h>
+#include <asm/dcr.h>
+#include <asm/dcu.h>
+#include <asm/pstate.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/spitfire.h>
+#include <asm/processor.h>
+#include <asm/thread_info.h>
+#include <asm/mmu.h>
+#include <asm/hypervisor.h>
+#include <asm/cpudata.h>
+
+	.data
+	.align	8
+call_method:
+	.asciz	"call-method"
+	.align	8
+itlb_load:
+	.asciz	"SUNW,itlb-load"
+	.align	8
+dtlb_load:
+	.asciz	"SUNW,dtlb-load"
+
+	/* XXX __cpuinit this thing XXX */
+#define TRAMP_STACK_SIZE	1024
+	.align	16
+tramp_stack:
+	.skip	TRAMP_STACK_SIZE
+
+	__CPUINIT
+	.align		8
+	.globl		sparc64_cpu_startup, sparc64_cpu_startup_end
+sparc64_cpu_startup:
+	BRANCH_IF_SUN4V(g1, niagara_startup)
+	BRANCH_IF_CHEETAH_BASE(g1, g5, cheetah_startup)
+	BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1, g5, cheetah_plus_startup)
+
+	ba,pt	%xcc, spitfire_startup
+	 nop
+
+cheetah_plus_startup:
+	/* Preserve OBP chosen DCU and DCR register settings.  */
+	ba,pt	%xcc, cheetah_generic_startup
+	 nop
+
+cheetah_startup:
+	mov	DCR_BPE | DCR_RPE | DCR_SI | DCR_IFPOE | DCR_MS, %g1
+	wr	%g1, %asr18
+
+	sethi	%uhi(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g5
+	or	%g5, %ulo(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g5
+	sllx	%g5, 32, %g5
+	or	%g5, DCU_DM | DCU_IM | DCU_DC | DCU_IC, %g5
+	stxa	%g5, [%g0] ASI_DCU_CONTROL_REG
+	membar	#Sync
+	/* fallthru */
+
+cheetah_generic_startup:
+	mov	TSB_EXTENSION_P, %g3
+	stxa	%g0, [%g3] ASI_DMMU
+	stxa	%g0, [%g3] ASI_IMMU
+	membar	#Sync
+
+	mov	TSB_EXTENSION_S, %g3
+	stxa	%g0, [%g3] ASI_DMMU
+	membar	#Sync
+
+	mov	TSB_EXTENSION_N, %g3
+	stxa	%g0, [%g3] ASI_DMMU
+	stxa	%g0, [%g3] ASI_IMMU
+	membar	#Sync
+	/* fallthru */
+
+niagara_startup:
+	/* Disable STICK_INT interrupts. */
+	sethi		%hi(0x80000000), %g5
+	sllx		%g5, 32, %g5
+	wr		%g5, %asr25
+
+	ba,pt		%xcc, startup_continue
+	 nop
+
+spitfire_startup:
+	mov		(LSU_CONTROL_IC | LSU_CONTROL_DC | LSU_CONTROL_IM | LSU_CONTROL_DM), %g1
+	stxa		%g1, [%g0] ASI_LSU_CONTROL
+	membar		#Sync
+
+startup_continue:
+	mov		%o0, %l0
+	BRANCH_IF_SUN4V(g1, niagara_lock_tlb)
+
+	sethi		%hi(0x80000000), %g2
+	sllx		%g2, 32, %g2
+	wr		%g2, 0, %tick_cmpr
+
+	/* Call OBP by hand to lock KERNBASE into i/d tlbs.
+	 * We lock 'num_kernel_image_mappings' consequetive entries.
+	 */
+	sethi		%hi(prom_entry_lock), %g2
+1:	ldstub		[%g2 + %lo(prom_entry_lock)], %g1
+	brnz,pn		%g1, 1b
+	 nop
+
+	sethi		%hi(p1275buf), %g2
+	or		%g2, %lo(p1275buf), %g2
+	ldx		[%g2 + 0x10], %l2
+	add		%l2, -(192 + 128), %sp
+	flushw
+
+	/* Setup the loop variables:
+	 * %l3: VADDR base
+	 * %l4: TTE base
+	 * %l5: Loop iterator, iterates from 0 to 'num_kernel_image_mappings'
+	 * %l6: Number of TTE entries to map
+	 * %l7: Highest TTE entry number, we count down
+	 */
+	sethi		%hi(KERNBASE), %l3
+	sethi		%hi(kern_locked_tte_data), %l4
+	ldx		[%l4 + %lo(kern_locked_tte_data)], %l4
+	clr		%l5
+	sethi		%hi(num_kernel_image_mappings), %l6
+	lduw		[%l6 + %lo(num_kernel_image_mappings)], %l6
+	add		%l6, 1, %l6
+
+	mov		15, %l7
+	BRANCH_IF_ANY_CHEETAH(g1,g5,2f)
+
+	mov		63, %l7
+2:
+
+3:
+	/* Lock into I-MMU */
+	sethi		%hi(call_method), %g2
+	or		%g2, %lo(call_method), %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x00]
+	mov		5, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x08]
+	mov		1, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x10]
+	sethi		%hi(itlb_load), %g2
+	or		%g2, %lo(itlb_load), %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x18]
+	sethi		%hi(prom_mmu_ihandle_cache), %g2
+	lduw		[%g2 + %lo(prom_mmu_ihandle_cache)], %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x20]
+
+	/* Each TTE maps 4MB, convert index to offset.  */
+	sllx		%l5, 22, %g1
+
+	add		%l3, %g1, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x28]	! VADDR
+	add		%l4, %g1, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x30]	! TTE
+
+	/* TTE index is highest minus loop index.  */
+	sub		%l7, %l5, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x38]
+
+	sethi		%hi(p1275buf), %g2
+	or		%g2, %lo(p1275buf), %g2
+	ldx		[%g2 + 0x08], %o1
+	call		%o1
+	 add		%sp, (2047 + 128), %o0
+
+	/* Lock into D-MMU */
+	sethi		%hi(call_method), %g2
+	or		%g2, %lo(call_method), %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x00]
+	mov		5, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x08]
+	mov		1, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x10]
+	sethi		%hi(dtlb_load), %g2
+	or		%g2, %lo(dtlb_load), %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x18]
+	sethi		%hi(prom_mmu_ihandle_cache), %g2
+	lduw		[%g2 + %lo(prom_mmu_ihandle_cache)], %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x20]
+
+	/* Each TTE maps 4MB, convert index to offset.  */
+	sllx		%l5, 22, %g1
+
+	add		%l3, %g1, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x28]	! VADDR
+	add		%l4, %g1, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x30]	! TTE
+
+	/* TTE index is highest minus loop index.  */
+	sub		%l7, %l5, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x38]
+
+	sethi		%hi(p1275buf), %g2
+	or		%g2, %lo(p1275buf), %g2
+	ldx		[%g2 + 0x08], %o1
+	call		%o1
+	 add		%sp, (2047 + 128), %o0
+
+	add		%l5, 1, %l5
+	cmp		%l5, %l6
+	bne,pt		%xcc, 3b
+	 nop
+
+	sethi		%hi(prom_entry_lock), %g2
+	stb		%g0, [%g2 + %lo(prom_entry_lock)]
+
+	ba,pt		%xcc, after_lock_tlb
+	 nop
+
+niagara_lock_tlb:
+	sethi		%hi(KERNBASE), %l3
+	sethi		%hi(kern_locked_tte_data), %l4
+	ldx		[%l4 + %lo(kern_locked_tte_data)], %l4
+	clr		%l5
+	sethi		%hi(num_kernel_image_mappings), %l6
+	lduw		[%l6 + %lo(num_kernel_image_mappings)], %l6
+	add		%l6, 1, %l6
+
+1:
+	mov		HV_FAST_MMU_MAP_PERM_ADDR, %o5
+	sllx		%l5, 22, %g2
+	add		%l3, %g2, %o0
+	clr		%o1
+	add		%l4, %g2, %o2
+	mov		HV_MMU_IMMU, %o3
+	ta		HV_FAST_TRAP
+
+	mov		HV_FAST_MMU_MAP_PERM_ADDR, %o5
+	sllx		%l5, 22, %g2
+	add		%l3, %g2, %o0
+	clr		%o1
+	add		%l4, %g2, %o2
+	mov		HV_MMU_DMMU, %o3
+	ta		HV_FAST_TRAP
+
+	add		%l5, 1, %l5
+	cmp		%l5, %l6
+	bne,pt		%xcc, 1b
+	 nop
+
+after_lock_tlb:
+	wrpr		%g0, (PSTATE_PRIV | PSTATE_PEF), %pstate
+	wr		%g0, 0, %fprs
+
+	wr		%g0, ASI_P, %asi
+
+	mov		PRIMARY_CONTEXT, %g7
+
+661:	stxa		%g0, [%g7] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g0, [%g7] ASI_MMU
+	.previous
+
+	membar		#Sync
+	mov		SECONDARY_CONTEXT, %g7
+
+661:	stxa		%g0, [%g7] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g0, [%g7] ASI_MMU
+	.previous
+
+	membar		#Sync
+
+	/* Everything we do here, until we properly take over the
+	 * trap table, must be done with extreme care.  We cannot
+	 * make any references to %g6 (current thread pointer),
+	 * %g4 (current task pointer), or %g5 (base of current cpu's
+	 * per-cpu area) until we properly take over the trap table
+	 * from the firmware and hypervisor.
+	 *
+	 * Get onto temporary stack which is in the locked kernel image.
+	 */
+	sethi		%hi(tramp_stack), %g1
+	or		%g1, %lo(tramp_stack), %g1
+	add		%g1, TRAMP_STACK_SIZE, %g1
+	sub		%g1, STACKFRAME_SZ + STACK_BIAS + 256, %sp
+	mov		0, %fp
+
+	/* Put garbage in these registers to trap any access to them.  */
+	set		0xdeadbeef, %g4
+	set		0xdeadbeef, %g5
+	set		0xdeadbeef, %g6
+
+	call		init_irqwork_curcpu
+	 nop
+
+	sethi		%hi(tlb_type), %g3
+	lduw		[%g3 + %lo(tlb_type)], %g2
+	cmp		%g2, 3
+	bne,pt		%icc, 1f
+	 nop
+
+	call		hard_smp_processor_id
+	 nop
+	
+	call		sun4v_register_mondo_queues
+	 nop
+
+1:	call		init_cur_cpu_trap
+	 ldx		[%l0], %o0
+
+	/* Start using proper page size encodings in ctx register.  */
+	sethi		%hi(sparc64_kern_pri_context), %g3
+	ldx		[%g3 + %lo(sparc64_kern_pri_context)], %g2
+	mov		PRIMARY_CONTEXT, %g1
+
+661:	stxa		%g2, [%g1] ASI_DMMU
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	stxa		%g2, [%g1] ASI_MMU
+	.previous
+
+	membar		#Sync
+
+	wrpr		%g0, 0, %wstate
+
+	sethi		%hi(prom_entry_lock), %g2
+1:	ldstub		[%g2 + %lo(prom_entry_lock)], %g1
+	brnz,pn		%g1, 1b
+	 nop
+
+	/* As a hack, put &init_thread_union into %g6.
+	 * prom_world() loads from here to restore the %asi
+	 * register.
+	 */
+	sethi		%hi(init_thread_union), %g6
+	or		%g6, %lo(init_thread_union), %g6
+
+	sethi		%hi(is_sun4v), %o0
+	lduw		[%o0 + %lo(is_sun4v)], %o0
+	brz,pt		%o0, 2f
+	 nop
+
+	TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
+	add		%g2, TRAP_PER_CPU_FAULT_INFO, %g2
+	stxa		%g2, [%g0] ASI_SCRATCHPAD
+
+	/* Compute physical address:
+	 *
+	 * paddr = kern_base + (mmfsa_vaddr - KERNBASE)
+	 */
+	sethi		%hi(KERNBASE), %g3
+	sub		%g2, %g3, %g2
+	sethi		%hi(kern_base), %g3
+	ldx		[%g3 + %lo(kern_base)], %g3
+	add		%g2, %g3, %o1
+	sethi		%hi(sparc64_ttable_tl0), %o0
+
+	set		prom_set_trap_table_name, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x00]
+	mov		2, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x08]
+	mov		0, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x10]
+	stx		%o0, [%sp + 2047 + 128 + 0x18]
+	stx		%o1, [%sp + 2047 + 128 + 0x20]
+	sethi		%hi(p1275buf), %g2
+	or		%g2, %lo(p1275buf), %g2
+	ldx		[%g2 + 0x08], %o1
+	call		%o1
+	 add		%sp, (2047 + 128), %o0
+
+	ba,pt		%xcc, 3f
+	 nop
+
+2:	sethi		%hi(sparc64_ttable_tl0), %o0
+	set		prom_set_trap_table_name, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x00]
+	mov		1, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x08]
+	mov		0, %g2
+	stx		%g2, [%sp + 2047 + 128 + 0x10]
+	stx		%o0, [%sp + 2047 + 128 + 0x18]
+	sethi		%hi(p1275buf), %g2
+	or		%g2, %lo(p1275buf), %g2
+	ldx		[%g2 + 0x08], %o1
+	call		%o1
+	 add		%sp, (2047 + 128), %o0
+
+3:	sethi		%hi(prom_entry_lock), %g2
+	stb		%g0, [%g2 + %lo(prom_entry_lock)]
+
+	ldx		[%l0], %g6
+	ldx		[%g6 + TI_TASK], %g4
+
+	mov		1, %g5
+	sllx		%g5, THREAD_SHIFT, %g5
+	sub		%g5, (STACKFRAME_SZ + STACK_BIAS), %g5
+	add		%g6, %g5, %sp
+	mov		0, %fp
+
+	rdpr		%pstate, %o1
+	or		%o1, PSTATE_IE, %o1
+	wrpr		%o1, 0, %pstate
+
+	call		smp_callin
+	 nop
+	call		cpu_idle
+	 mov		0, %o0
+	call		cpu_panic
+	 nop
+1:	b,a,pt		%xcc, 1b
+
+	.align		8
+sparc64_cpu_startup_end:
diff --git a/arch/sparc/kernel/traps.c b/arch/sparc/kernel/traps_32.c
index 2b7d50659036..716f3946c494 100644
--- a/arch/sparc/kernel/traps.c
+++ b/arch/sparc/kernel/traps_32.c
@@ -25,31 +25,10 @@
 #include <asm/unistd.h>
 #include <asm/traps.h>
 
-/* #define TRAP_DEBUG */
-
-struct trap_trace_entry {
-	unsigned long pc;
-	unsigned long type;
-};
-
-void syscall_trace_entry(struct pt_regs *regs)
-{
-	printk("%s[%d]: ", current->comm, task_pid_nr(current));
-	printk("scall<%d> (could be %d)\n", (int) regs->u_regs[UREG_G1],
-	       (int) regs->u_regs[UREG_I0]);
-}
-
-void syscall_trace_exit(struct pt_regs *regs)
-{
-}
+#include "entry.h"
+#include "kernel.h"
 
-void sun4d_nmi(struct pt_regs *regs)
-{
-	printk("Aieee: sun4d NMI received!\n");
-	printk("you lose buddy boy...\n");
-	show_regs(regs);
-	prom_halt();
-}
+/* #define TRAP_DEBUG */
 
 static void instruction_dump(unsigned long *pc)
 {
@@ -134,7 +113,6 @@ void do_hw_interrupt(struct pt_regs *regs, unsigned long type)
 void do_illegal_instruction(struct pt_regs *regs, unsigned long pc, unsigned long npc,
 			    unsigned long psr)
 {
-	extern int do_user_muldiv (struct pt_regs *, unsigned long);
 	siginfo_t info;
 
 	if(psr & PSR_PS)
@@ -195,10 +173,6 @@ void do_memaccess_unaligned(struct pt_regs *regs, unsigned long pc, unsigned lon
 	send_sig_info(SIGBUS, &info, current);
 }
 
-extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
-		   void *fpqueue, unsigned long *fpqdepth);
-extern void fpload(unsigned long *fpregs, unsigned long *fsr);
-
 static unsigned long init_fsr = 0x0UL;
 static unsigned long init_fregs[32] __attribute__ ((aligned (8))) =
                 { ~0UL, ~0UL, ~0UL, ~0UL, ~0UL, ~0UL, ~0UL, ~0UL,
@@ -456,8 +430,6 @@ void do_BUG(const char *file, int line)
  * up here so that timer interrupts work during initialization.
  */
 
-extern void sparc_cpu_startup(void);
-
 void trap_init(void)
 {
 	extern void thread_info_offsets_are_bolixed_pete(void);
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
new file mode 100644
index 000000000000..4638af2f55a0
--- /dev/null
+++ b/arch/sparc/kernel/traps_64.c
@@ -0,0 +1,2600 @@
+/* arch/sparc64/kernel/traps.c
+ *
+ * Copyright (C) 1995,1997,2008 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1997,1999,2000 Jakub Jelinek (jakub@redhat.com)
+ */
+
+/*
+ * I like traps on v9, :))))
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/linkage.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/smp.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/kdebug.h>
+
+#include <asm/smp.h>
+#include <asm/delay.h>
+#include <asm/system.h>
+#include <asm/ptrace.h>
+#include <asm/oplib.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/unistd.h>
+#include <asm/uaccess.h>
+#include <asm/fpumacro.h>
+#include <asm/lsu.h>
+#include <asm/dcu.h>
+#include <asm/estate.h>
+#include <asm/chafsr.h>
+#include <asm/sfafsr.h>
+#include <asm/psrcompat.h>
+#include <asm/processor.h>
+#include <asm/timer.h>
+#include <asm/head.h>
+#include <asm/prom.h>
+#include <asm/memctrl.h>
+
+#include "entry.h"
+#include "kstack.h"
+
+/* When an irrecoverable trap occurs at tl > 0, the trap entry
+ * code logs the trap state registers at every level in the trap
+ * stack.  It is found at (pt_regs + sizeof(pt_regs)) and the layout
+ * is as follows:
+ */
+struct tl1_traplog {
+	struct {
+		unsigned long tstate;
+		unsigned long tpc;
+		unsigned long tnpc;
+		unsigned long tt;
+	} trapstack[4];
+	unsigned long tl;
+};
+
+static void dump_tl1_traplog(struct tl1_traplog *p)
+{
+	int i, limit;
+
+	printk(KERN_EMERG "TRAPLOG: Error at trap level 0x%lx, "
+	       "dumping track stack.\n", p->tl);
+
+	limit = (tlb_type == hypervisor) ? 2 : 4;
+	for (i = 0; i < limit; i++) {
+		printk(KERN_EMERG
+		       "TRAPLOG: Trap level %d TSTATE[%016lx] TPC[%016lx] "
+		       "TNPC[%016lx] TT[%lx]\n",
+		       i + 1,
+		       p->trapstack[i].tstate, p->trapstack[i].tpc,
+		       p->trapstack[i].tnpc, p->trapstack[i].tt);
+		printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc);
+	}
+}
+
+void bad_trap(struct pt_regs *regs, long lvl)
+{
+	char buffer[32];
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "bad trap", regs,
+		       0, lvl, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	if (lvl < 0x100) {
+		sprintf(buffer, "Bad hw trap %lx at tl0\n", lvl);
+		die_if_kernel(buffer, regs);
+	}
+
+	lvl -= 0x100;
+	if (regs->tstate & TSTATE_PRIV) {
+		sprintf(buffer, "Kernel bad sw trap %lx", lvl);
+		die_if_kernel(buffer, regs);
+	}
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	info.si_signo = SIGILL;
+	info.si_errno = 0;
+	info.si_code = ILL_ILLTRP;
+	info.si_addr = (void __user *)regs->tpc;
+	info.si_trapno = lvl;
+	force_sig_info(SIGILL, &info, current);
+}
+
+void bad_trap_tl1(struct pt_regs *regs, long lvl)
+{
+	char buffer[32];
+	
+	if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs,
+		       0, lvl, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+
+	sprintf (buffer, "Bad trap %lx at tl>0", lvl);
+	die_if_kernel (buffer, regs);
+}
+
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+void do_BUG(const char *file, int line)
+{
+	bust_spinlocks(1);
+	printk("kernel BUG at %s:%d!\n", file, line);
+}
+#endif
+
+static DEFINE_SPINLOCK(dimm_handler_lock);
+static dimm_printer_t dimm_handler;
+
+static int sprintf_dimm(int synd_code, unsigned long paddr, char *buf, int buflen)
+{
+	unsigned long flags;
+	int ret = -ENODEV;
+
+	spin_lock_irqsave(&dimm_handler_lock, flags);
+	if (dimm_handler) {
+		ret = dimm_handler(synd_code, paddr, buf, buflen);
+	} else if (tlb_type == spitfire) {
+		if (prom_getunumber(synd_code, paddr, buf, buflen) == -1)
+			ret = -EINVAL;
+		else
+			ret = 0;
+	} else
+		ret = -ENODEV;
+	spin_unlock_irqrestore(&dimm_handler_lock, flags);
+
+	return ret;
+}
+
+int register_dimm_printer(dimm_printer_t func)
+{
+	unsigned long flags;
+	int ret = 0;
+
+	spin_lock_irqsave(&dimm_handler_lock, flags);
+	if (!dimm_handler)
+		dimm_handler = func;
+	else
+		ret = -EEXIST;
+	spin_unlock_irqrestore(&dimm_handler_lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(register_dimm_printer);
+
+void unregister_dimm_printer(dimm_printer_t func)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dimm_handler_lock, flags);
+	if (dimm_handler == func)
+		dimm_handler = NULL;
+	spin_unlock_irqrestore(&dimm_handler_lock, flags);
+}
+EXPORT_SYMBOL_GPL(unregister_dimm_printer);
+
+void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "instruction access exception", regs,
+		       0, 0x8, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	if (regs->tstate & TSTATE_PRIV) {
+		printk("spitfire_insn_access_exception: SFSR[%016lx] "
+		       "SFAR[%016lx], going.\n", sfsr, sfar);
+		die_if_kernel("Iax", regs);
+	}
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	info.si_signo = SIGSEGV;
+	info.si_errno = 0;
+	info.si_code = SEGV_MAPERR;
+	info.si_addr = (void __user *)regs->tpc;
+	info.si_trapno = 0;
+	force_sig_info(SIGSEGV, &info, current);
+}
+
+void spitfire_insn_access_exception_tl1(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
+{
+	if (notify_die(DIE_TRAP_TL1, "instruction access exception tl1", regs,
+		       0, 0x8, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	spitfire_insn_access_exception(regs, sfsr, sfar);
+}
+
+void sun4v_insn_access_exception(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
+{
+	unsigned short type = (type_ctx >> 16);
+	unsigned short ctx  = (type_ctx & 0xffff);
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "instruction access exception", regs,
+		       0, 0x8, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	if (regs->tstate & TSTATE_PRIV) {
+		printk("sun4v_insn_access_exception: ADDR[%016lx] "
+		       "CTX[%04x] TYPE[%04x], going.\n",
+		       addr, ctx, type);
+		die_if_kernel("Iax", regs);
+	}
+
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	info.si_signo = SIGSEGV;
+	info.si_errno = 0;
+	info.si_code = SEGV_MAPERR;
+	info.si_addr = (void __user *) addr;
+	info.si_trapno = 0;
+	force_sig_info(SIGSEGV, &info, current);
+}
+
+void sun4v_insn_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
+{
+	if (notify_die(DIE_TRAP_TL1, "instruction access exception tl1", regs,
+		       0, 0x8, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	sun4v_insn_access_exception(regs, addr, type_ctx);
+}
+
+void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "data access exception", regs,
+		       0, 0x30, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	if (regs->tstate & TSTATE_PRIV) {
+		/* Test if this comes from uaccess places. */
+		const struct exception_table_entry *entry;
+
+		entry = search_exception_tables(regs->tpc);
+		if (entry) {
+			/* Ouch, somebody is trying VM hole tricks on us... */
+#ifdef DEBUG_EXCEPTIONS
+			printk("Exception: PC<%016lx> faddr<UNKNOWN>\n", regs->tpc);
+			printk("EX_TABLE: insn<%016lx> fixup<%016lx>\n",
+			       regs->tpc, entry->fixup);
+#endif
+			regs->tpc = entry->fixup;
+			regs->tnpc = regs->tpc + 4;
+			return;
+		}
+		/* Shit... */
+		printk("spitfire_data_access_exception: SFSR[%016lx] "
+		       "SFAR[%016lx], going.\n", sfsr, sfar);
+		die_if_kernel("Dax", regs);
+	}
+
+	info.si_signo = SIGSEGV;
+	info.si_errno = 0;
+	info.si_code = SEGV_MAPERR;
+	info.si_addr = (void __user *)sfar;
+	info.si_trapno = 0;
+	force_sig_info(SIGSEGV, &info, current);
+}
+
+void spitfire_data_access_exception_tl1(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
+{
+	if (notify_die(DIE_TRAP_TL1, "data access exception tl1", regs,
+		       0, 0x30, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	spitfire_data_access_exception(regs, sfsr, sfar);
+}
+
+void sun4v_data_access_exception(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
+{
+	unsigned short type = (type_ctx >> 16);
+	unsigned short ctx  = (type_ctx & 0xffff);
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "data access exception", regs,
+		       0, 0x8, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	if (regs->tstate & TSTATE_PRIV) {
+		printk("sun4v_data_access_exception: ADDR[%016lx] "
+		       "CTX[%04x] TYPE[%04x], going.\n",
+		       addr, ctx, type);
+		die_if_kernel("Dax", regs);
+	}
+
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	info.si_signo = SIGSEGV;
+	info.si_errno = 0;
+	info.si_code = SEGV_MAPERR;
+	info.si_addr = (void __user *) addr;
+	info.si_trapno = 0;
+	force_sig_info(SIGSEGV, &info, current);
+}
+
+void sun4v_data_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
+{
+	if (notify_die(DIE_TRAP_TL1, "data access exception tl1", regs,
+		       0, 0x8, SIGTRAP) == NOTIFY_STOP)
+		return;
+
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	sun4v_data_access_exception(regs, addr, type_ctx);
+}
+
+#ifdef CONFIG_PCI
+#include "pci_impl.h"
+#endif
+
+/* When access exceptions happen, we must do this. */
+static void spitfire_clean_and_reenable_l1_caches(void)
+{
+	unsigned long va;
+
+	if (tlb_type != spitfire)
+		BUG();
+
+	/* Clean 'em. */
+	for (va =  0; va < (PAGE_SIZE << 1); va += 32) {
+		spitfire_put_icache_tag(va, 0x0);
+		spitfire_put_dcache_tag(va, 0x0);
+	}
+
+	/* Re-enable in LSU. */
+	__asm__ __volatile__("flush %%g6\n\t"
+			     "membar #Sync\n\t"
+			     "stxa %0, [%%g0] %1\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (LSU_CONTROL_IC | LSU_CONTROL_DC |
+				    LSU_CONTROL_IM | LSU_CONTROL_DM),
+			     "i" (ASI_LSU_CONTROL)
+			     : "memory");
+}
+
+static void spitfire_enable_estate_errors(void)
+{
+	__asm__ __volatile__("stxa	%0, [%%g0] %1\n\t"
+			     "membar	#Sync"
+			     : /* no outputs */
+			     : "r" (ESTATE_ERR_ALL),
+			       "i" (ASI_ESTATE_ERROR_EN));
+}
+
+static char ecc_syndrome_table[] = {
+	0x4c, 0x40, 0x41, 0x48, 0x42, 0x48, 0x48, 0x49,
+	0x43, 0x48, 0x48, 0x49, 0x48, 0x49, 0x49, 0x4a,
+	0x44, 0x48, 0x48, 0x20, 0x48, 0x39, 0x4b, 0x48,
+	0x48, 0x25, 0x31, 0x48, 0x28, 0x48, 0x48, 0x2c,
+	0x45, 0x48, 0x48, 0x21, 0x48, 0x3d, 0x04, 0x48,
+	0x48, 0x4b, 0x35, 0x48, 0x2d, 0x48, 0x48, 0x29,
+	0x48, 0x00, 0x01, 0x48, 0x0a, 0x48, 0x48, 0x4b,
+	0x0f, 0x48, 0x48, 0x4b, 0x48, 0x49, 0x49, 0x48,
+	0x46, 0x48, 0x48, 0x2a, 0x48, 0x3b, 0x27, 0x48,
+	0x48, 0x4b, 0x33, 0x48, 0x22, 0x48, 0x48, 0x2e,
+	0x48, 0x19, 0x1d, 0x48, 0x1b, 0x4a, 0x48, 0x4b,
+	0x1f, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48,
+	0x48, 0x4b, 0x24, 0x48, 0x07, 0x48, 0x48, 0x36,
+	0x4b, 0x48, 0x48, 0x3e, 0x48, 0x30, 0x38, 0x48,
+	0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x16, 0x48,
+	0x48, 0x12, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b,
+	0x47, 0x48, 0x48, 0x2f, 0x48, 0x3f, 0x4b, 0x48,
+	0x48, 0x06, 0x37, 0x48, 0x23, 0x48, 0x48, 0x2b,
+	0x48, 0x05, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x32,
+	0x26, 0x48, 0x48, 0x3a, 0x48, 0x34, 0x3c, 0x48,
+	0x48, 0x11, 0x15, 0x48, 0x13, 0x4a, 0x48, 0x4b,
+	0x17, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48,
+	0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x1e, 0x48,
+	0x48, 0x1a, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b,
+	0x48, 0x08, 0x0d, 0x48, 0x02, 0x48, 0x48, 0x49,
+	0x03, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x4b, 0x48,
+	0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x10, 0x48,
+	0x48, 0x14, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b,
+	0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x18, 0x48,
+	0x48, 0x1c, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b,
+	0x4a, 0x0c, 0x09, 0x48, 0x0e, 0x48, 0x48, 0x4b,
+	0x0b, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x4b, 0x4a
+};
+
+static char *syndrome_unknown = "<Unknown>";
+
+static void spitfire_log_udb_syndrome(unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long bit)
+{
+	unsigned short scode;
+	char memmod_str[64], *p;
+
+	if (udbl & bit) {
+		scode = ecc_syndrome_table[udbl & 0xff];
+		if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0)
+			p = syndrome_unknown;
+		else
+			p = memmod_str;
+		printk(KERN_WARNING "CPU[%d]: UDBL Syndrome[%x] "
+		       "Memory Module \"%s\"\n",
+		       smp_processor_id(), scode, p);
+	}
+
+	if (udbh & bit) {
+		scode = ecc_syndrome_table[udbh & 0xff];
+		if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0)
+			p = syndrome_unknown;
+		else
+			p = memmod_str;
+		printk(KERN_WARNING "CPU[%d]: UDBH Syndrome[%x] "
+		       "Memory Module \"%s\"\n",
+		       smp_processor_id(), scode, p);
+	}
+
+}
+
+static void spitfire_cee_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, int tl1, struct pt_regs *regs)
+{
+
+	printk(KERN_WARNING "CPU[%d]: Correctable ECC Error "
+	       "AFSR[%lx] AFAR[%016lx] UDBL[%lx] UDBH[%lx] TL>1[%d]\n",
+	       smp_processor_id(), afsr, afar, udbl, udbh, tl1);
+
+	spitfire_log_udb_syndrome(afar, udbh, udbl, UDBE_CE);
+
+	/* We always log it, even if someone is listening for this
+	 * trap.
+	 */
+	notify_die(DIE_TRAP, "Correctable ECC Error", regs,
+		   0, TRAP_TYPE_CEE, SIGTRAP);
+
+	/* The Correctable ECC Error trap does not disable I/D caches.  So
+	 * we only have to restore the ESTATE Error Enable register.
+	 */
+	spitfire_enable_estate_errors();
+}
+
+static void spitfire_ue_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long tt, int tl1, struct pt_regs *regs)
+{
+	siginfo_t info;
+
+	printk(KERN_WARNING "CPU[%d]: Uncorrectable Error AFSR[%lx] "
+	       "AFAR[%lx] UDBL[%lx] UDBH[%ld] TT[%lx] TL>1[%d]\n",
+	       smp_processor_id(), afsr, afar, udbl, udbh, tt, tl1);
+
+	/* XXX add more human friendly logging of the error status
+	 * XXX as is implemented for cheetah
+	 */
+
+	spitfire_log_udb_syndrome(afar, udbh, udbl, UDBE_UE);
+
+	/* We always log it, even if someone is listening for this
+	 * trap.
+	 */
+	notify_die(DIE_TRAP, "Uncorrectable Error", regs,
+		   0, tt, SIGTRAP);
+
+	if (regs->tstate & TSTATE_PRIV) {
+		if (tl1)
+			dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+		die_if_kernel("UE", regs);
+	}
+
+	/* XXX need more intelligent processing here, such as is implemented
+	 * XXX for cheetah errors, in fact if the E-cache still holds the
+	 * XXX line with bad parity this will loop
+	 */
+
+	spitfire_clean_and_reenable_l1_caches();
+	spitfire_enable_estate_errors();
+
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	info.si_signo = SIGBUS;
+	info.si_errno = 0;
+	info.si_code = BUS_OBJERR;
+	info.si_addr = (void *)0;
+	info.si_trapno = 0;
+	force_sig_info(SIGBUS, &info, current);
+}
+
+void spitfire_access_error(struct pt_regs *regs, unsigned long status_encoded, unsigned long afar)
+{
+	unsigned long afsr, tt, udbh, udbl;
+	int tl1;
+
+	afsr = (status_encoded & SFSTAT_AFSR_MASK) >> SFSTAT_AFSR_SHIFT;
+	tt = (status_encoded & SFSTAT_TRAP_TYPE) >> SFSTAT_TRAP_TYPE_SHIFT;
+	tl1 = (status_encoded & SFSTAT_TL_GT_ONE) ? 1 : 0;
+	udbl = (status_encoded & SFSTAT_UDBL_MASK) >> SFSTAT_UDBL_SHIFT;
+	udbh = (status_encoded & SFSTAT_UDBH_MASK) >> SFSTAT_UDBH_SHIFT;
+
+#ifdef CONFIG_PCI
+	if (tt == TRAP_TYPE_DAE &&
+	    pci_poke_in_progress && pci_poke_cpu == smp_processor_id()) {
+		spitfire_clean_and_reenable_l1_caches();
+		spitfire_enable_estate_errors();
+
+		pci_poke_faulted = 1;
+		regs->tnpc = regs->tpc + 4;
+		return;
+	}
+#endif
+
+	if (afsr & SFAFSR_UE)
+		spitfire_ue_log(afsr, afar, udbh, udbl, tt, tl1, regs);
+
+	if (tt == TRAP_TYPE_CEE) {
+		/* Handle the case where we took a CEE trap, but ACK'd
+		 * only the UE state in the UDB error registers.
+		 */
+		if (afsr & SFAFSR_UE) {
+			if (udbh & UDBE_CE) {
+				__asm__ __volatile__(
+					"stxa	%0, [%1] %2\n\t"
+					"membar	#Sync"
+					: /* no outputs */
+					: "r" (udbh & UDBE_CE),
+					  "r" (0x0), "i" (ASI_UDB_ERROR_W));
+			}
+			if (udbl & UDBE_CE) {
+				__asm__ __volatile__(
+					"stxa	%0, [%1] %2\n\t"
+					"membar	#Sync"
+					: /* no outputs */
+					: "r" (udbl & UDBE_CE),
+					  "r" (0x18), "i" (ASI_UDB_ERROR_W));
+			}
+		}
+
+		spitfire_cee_log(afsr, afar, udbh, udbl, tl1, regs);
+	}
+}
+
+int cheetah_pcache_forced_on;
+
+void cheetah_enable_pcache(void)
+{
+	unsigned long dcr;
+
+	printk("CHEETAH: Enabling P-Cache on cpu %d.\n",
+	       smp_processor_id());
+
+	__asm__ __volatile__("ldxa [%%g0] %1, %0"
+			     : "=r" (dcr)
+			     : "i" (ASI_DCU_CONTROL_REG));
+	dcr |= (DCU_PE | DCU_HPE | DCU_SPE | DCU_SL);
+	__asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (dcr), "i" (ASI_DCU_CONTROL_REG));
+}
+
+/* Cheetah error trap handling. */
+static unsigned long ecache_flush_physbase;
+static unsigned long ecache_flush_linesize;
+static unsigned long ecache_flush_size;
+
+/* This table is ordered in priority of errors and matches the
+ * AFAR overwrite policy as well.
+ */
+
+struct afsr_error_table {
+	unsigned long mask;
+	const char *name;
+};
+
+static const char CHAFSR_PERR_msg[] =
+	"System interface protocol error";
+static const char CHAFSR_IERR_msg[] =
+	"Internal processor error";
+static const char CHAFSR_ISAP_msg[] =
+	"System request parity error on incoming addresss";
+static const char CHAFSR_UCU_msg[] =
+	"Uncorrectable E-cache ECC error for ifetch/data";
+static const char CHAFSR_UCC_msg[] =
+	"SW Correctable E-cache ECC error for ifetch/data";
+static const char CHAFSR_UE_msg[] =
+	"Uncorrectable system bus data ECC error for read";
+static const char CHAFSR_EDU_msg[] =
+	"Uncorrectable E-cache ECC error for stmerge/blkld";
+static const char CHAFSR_EMU_msg[] =
+	"Uncorrectable system bus MTAG error";
+static const char CHAFSR_WDU_msg[] =
+	"Uncorrectable E-cache ECC error for writeback";
+static const char CHAFSR_CPU_msg[] =
+	"Uncorrectable ECC error for copyout";
+static const char CHAFSR_CE_msg[] =
+	"HW corrected system bus data ECC error for read";
+static const char CHAFSR_EDC_msg[] =
+	"HW corrected E-cache ECC error for stmerge/blkld";
+static const char CHAFSR_EMC_msg[] =
+	"HW corrected system bus MTAG ECC error";
+static const char CHAFSR_WDC_msg[] =
+	"HW corrected E-cache ECC error for writeback";
+static const char CHAFSR_CPC_msg[] =
+	"HW corrected ECC error for copyout";
+static const char CHAFSR_TO_msg[] =
+	"Unmapped error from system bus";
+static const char CHAFSR_BERR_msg[] =
+	"Bus error response from system bus";
+static const char CHAFSR_IVC_msg[] =
+	"HW corrected system bus data ECC error for ivec read";
+static const char CHAFSR_IVU_msg[] =
+	"Uncorrectable system bus data ECC error for ivec read";
+static struct afsr_error_table __cheetah_error_table[] = {
+	{	CHAFSR_PERR,	CHAFSR_PERR_msg		},
+	{	CHAFSR_IERR,	CHAFSR_IERR_msg		},
+	{	CHAFSR_ISAP,	CHAFSR_ISAP_msg		},
+	{	CHAFSR_UCU,	CHAFSR_UCU_msg		},
+	{	CHAFSR_UCC,	CHAFSR_UCC_msg		},
+	{	CHAFSR_UE,	CHAFSR_UE_msg		},
+	{	CHAFSR_EDU,	CHAFSR_EDU_msg		},
+	{	CHAFSR_EMU,	CHAFSR_EMU_msg		},
+	{	CHAFSR_WDU,	CHAFSR_WDU_msg		},
+	{	CHAFSR_CPU,	CHAFSR_CPU_msg		},
+	{	CHAFSR_CE,	CHAFSR_CE_msg		},
+	{	CHAFSR_EDC,	CHAFSR_EDC_msg		},
+	{	CHAFSR_EMC,	CHAFSR_EMC_msg		},
+	{	CHAFSR_WDC,	CHAFSR_WDC_msg		},
+	{	CHAFSR_CPC,	CHAFSR_CPC_msg		},
+	{	CHAFSR_TO,	CHAFSR_TO_msg		},
+	{	CHAFSR_BERR,	CHAFSR_BERR_msg		},
+	/* These two do not update the AFAR. */
+	{	CHAFSR_IVC,	CHAFSR_IVC_msg		},
+	{	CHAFSR_IVU,	CHAFSR_IVU_msg		},
+	{	0,		NULL			},
+};
+static const char CHPAFSR_DTO_msg[] =
+	"System bus unmapped error for prefetch/storequeue-read";
+static const char CHPAFSR_DBERR_msg[] =
+	"System bus error for prefetch/storequeue-read";
+static const char CHPAFSR_THCE_msg[] =
+	"Hardware corrected E-cache Tag ECC error";
+static const char CHPAFSR_TSCE_msg[] =
+	"SW handled correctable E-cache Tag ECC error";
+static const char CHPAFSR_TUE_msg[] =
+	"Uncorrectable E-cache Tag ECC error";
+static const char CHPAFSR_DUE_msg[] =
+	"System bus uncorrectable data ECC error due to prefetch/store-fill";
+static struct afsr_error_table __cheetah_plus_error_table[] = {
+	{	CHAFSR_PERR,	CHAFSR_PERR_msg		},
+	{	CHAFSR_IERR,	CHAFSR_IERR_msg		},
+	{	CHAFSR_ISAP,	CHAFSR_ISAP_msg		},
+	{	CHAFSR_UCU,	CHAFSR_UCU_msg		},
+	{	CHAFSR_UCC,	CHAFSR_UCC_msg		},
+	{	CHAFSR_UE,	CHAFSR_UE_msg		},
+	{	CHAFSR_EDU,	CHAFSR_EDU_msg		},
+	{	CHAFSR_EMU,	CHAFSR_EMU_msg		},
+	{	CHAFSR_WDU,	CHAFSR_WDU_msg		},
+	{	CHAFSR_CPU,	CHAFSR_CPU_msg		},
+	{	CHAFSR_CE,	CHAFSR_CE_msg		},
+	{	CHAFSR_EDC,	CHAFSR_EDC_msg		},
+	{	CHAFSR_EMC,	CHAFSR_EMC_msg		},
+	{	CHAFSR_WDC,	CHAFSR_WDC_msg		},
+	{	CHAFSR_CPC,	CHAFSR_CPC_msg		},
+	{	CHAFSR_TO,	CHAFSR_TO_msg		},
+	{	CHAFSR_BERR,	CHAFSR_BERR_msg		},
+	{	CHPAFSR_DTO,	CHPAFSR_DTO_msg		},
+	{	CHPAFSR_DBERR,	CHPAFSR_DBERR_msg	},
+	{	CHPAFSR_THCE,	CHPAFSR_THCE_msg	},
+	{	CHPAFSR_TSCE,	CHPAFSR_TSCE_msg	},
+	{	CHPAFSR_TUE,	CHPAFSR_TUE_msg		},
+	{	CHPAFSR_DUE,	CHPAFSR_DUE_msg		},
+	/* These two do not update the AFAR. */
+	{	CHAFSR_IVC,	CHAFSR_IVC_msg		},
+	{	CHAFSR_IVU,	CHAFSR_IVU_msg		},
+	{	0,		NULL			},
+};
+static const char JPAFSR_JETO_msg[] =
+	"System interface protocol error, hw timeout caused";
+static const char JPAFSR_SCE_msg[] =
+	"Parity error on system snoop results";
+static const char JPAFSR_JEIC_msg[] =
+	"System interface protocol error, illegal command detected";
+static const char JPAFSR_JEIT_msg[] =
+	"System interface protocol error, illegal ADTYPE detected";
+static const char JPAFSR_OM_msg[] =
+	"Out of range memory error has occurred";
+static const char JPAFSR_ETP_msg[] =
+	"Parity error on L2 cache tag SRAM";
+static const char JPAFSR_UMS_msg[] =
+	"Error due to unsupported store";
+static const char JPAFSR_RUE_msg[] =
+	"Uncorrectable ECC error from remote cache/memory";
+static const char JPAFSR_RCE_msg[] =
+	"Correctable ECC error from remote cache/memory";
+static const char JPAFSR_BP_msg[] =
+	"JBUS parity error on returned read data";
+static const char JPAFSR_WBP_msg[] =
+	"JBUS parity error on data for writeback or block store";
+static const char JPAFSR_FRC_msg[] =
+	"Foreign read to DRAM incurring correctable ECC error";
+static const char JPAFSR_FRU_msg[] =
+	"Foreign read to DRAM incurring uncorrectable ECC error";
+static struct afsr_error_table __jalapeno_error_table[] = {
+	{	JPAFSR_JETO,	JPAFSR_JETO_msg		},
+	{	JPAFSR_SCE,	JPAFSR_SCE_msg		},
+	{	JPAFSR_JEIC,	JPAFSR_JEIC_msg		},
+	{	JPAFSR_JEIT,	JPAFSR_JEIT_msg		},
+	{	CHAFSR_PERR,	CHAFSR_PERR_msg		},
+	{	CHAFSR_IERR,	CHAFSR_IERR_msg		},
+	{	CHAFSR_ISAP,	CHAFSR_ISAP_msg		},
+	{	CHAFSR_UCU,	CHAFSR_UCU_msg		},
+	{	CHAFSR_UCC,	CHAFSR_UCC_msg		},
+	{	CHAFSR_UE,	CHAFSR_UE_msg		},
+	{	CHAFSR_EDU,	CHAFSR_EDU_msg		},
+	{	JPAFSR_OM,	JPAFSR_OM_msg		},
+	{	CHAFSR_WDU,	CHAFSR_WDU_msg		},
+	{	CHAFSR_CPU,	CHAFSR_CPU_msg		},
+	{	CHAFSR_CE,	CHAFSR_CE_msg		},
+	{	CHAFSR_EDC,	CHAFSR_EDC_msg		},
+	{	JPAFSR_ETP,	JPAFSR_ETP_msg		},
+	{	CHAFSR_WDC,	CHAFSR_WDC_msg		},
+	{	CHAFSR_CPC,	CHAFSR_CPC_msg		},
+	{	CHAFSR_TO,	CHAFSR_TO_msg		},
+	{	CHAFSR_BERR,	CHAFSR_BERR_msg		},
+	{	JPAFSR_UMS,	JPAFSR_UMS_msg		},
+	{	JPAFSR_RUE,	JPAFSR_RUE_msg		},
+	{	JPAFSR_RCE,	JPAFSR_RCE_msg		},
+	{	JPAFSR_BP,	JPAFSR_BP_msg		},
+	{	JPAFSR_WBP,	JPAFSR_WBP_msg		},
+	{	JPAFSR_FRC,	JPAFSR_FRC_msg		},
+	{	JPAFSR_FRU,	JPAFSR_FRU_msg		},
+	/* These two do not update the AFAR. */
+	{	CHAFSR_IVU,	CHAFSR_IVU_msg		},
+	{	0,		NULL			},
+};
+static struct afsr_error_table *cheetah_error_table;
+static unsigned long cheetah_afsr_errors;
+
+struct cheetah_err_info *cheetah_error_log;
+
+static inline struct cheetah_err_info *cheetah_get_error_log(unsigned long afsr)
+{
+	struct cheetah_err_info *p;
+	int cpu = smp_processor_id();
+
+	if (!cheetah_error_log)
+		return NULL;
+
+	p = cheetah_error_log + (cpu * 2);
+	if ((afsr & CHAFSR_TL1) != 0UL)
+		p++;
+
+	return p;
+}
+
+extern unsigned int tl0_icpe[], tl1_icpe[];
+extern unsigned int tl0_dcpe[], tl1_dcpe[];
+extern unsigned int tl0_fecc[], tl1_fecc[];
+extern unsigned int tl0_cee[], tl1_cee[];
+extern unsigned int tl0_iae[], tl1_iae[];
+extern unsigned int tl0_dae[], tl1_dae[];
+extern unsigned int cheetah_plus_icpe_trap_vector[], cheetah_plus_icpe_trap_vector_tl1[];
+extern unsigned int cheetah_plus_dcpe_trap_vector[], cheetah_plus_dcpe_trap_vector_tl1[];
+extern unsigned int cheetah_fecc_trap_vector[], cheetah_fecc_trap_vector_tl1[];
+extern unsigned int cheetah_cee_trap_vector[], cheetah_cee_trap_vector_tl1[];
+extern unsigned int cheetah_deferred_trap_vector[], cheetah_deferred_trap_vector_tl1[];
+
+void __init cheetah_ecache_flush_init(void)
+{
+	unsigned long largest_size, smallest_linesize, order, ver;
+	int i, sz;
+
+	/* Scan all cpu device tree nodes, note two values:
+	 * 1) largest E-cache size
+	 * 2) smallest E-cache line size
+	 */
+	largest_size = 0UL;
+	smallest_linesize = ~0UL;
+
+	for (i = 0; i < NR_CPUS; i++) {
+		unsigned long val;
+
+		val = cpu_data(i).ecache_size;
+		if (!val)
+			continue;
+
+		if (val > largest_size)
+			largest_size = val;
+
+		val = cpu_data(i).ecache_line_size;
+		if (val < smallest_linesize)
+			smallest_linesize = val;
+
+	}
+
+	if (largest_size == 0UL || smallest_linesize == ~0UL) {
+		prom_printf("cheetah_ecache_flush_init: Cannot probe cpu E-cache "
+			    "parameters.\n");
+		prom_halt();
+	}
+
+	ecache_flush_size = (2 * largest_size);
+	ecache_flush_linesize = smallest_linesize;
+
+	ecache_flush_physbase = find_ecache_flush_span(ecache_flush_size);
+
+	if (ecache_flush_physbase == ~0UL) {
+		prom_printf("cheetah_ecache_flush_init: Cannot find %d byte "
+			    "contiguous physical memory.\n",
+			    ecache_flush_size);
+		prom_halt();
+	}
+
+	/* Now allocate error trap reporting scoreboard. */
+	sz = NR_CPUS * (2 * sizeof(struct cheetah_err_info));
+	for (order = 0; order < MAX_ORDER; order++) {
+		if ((PAGE_SIZE << order) >= sz)
+			break;
+	}
+	cheetah_error_log = (struct cheetah_err_info *)
+		__get_free_pages(GFP_KERNEL, order);
+	if (!cheetah_error_log) {
+		prom_printf("cheetah_ecache_flush_init: Failed to allocate "
+			    "error logging scoreboard (%d bytes).\n", sz);
+		prom_halt();
+	}
+	memset(cheetah_error_log, 0, PAGE_SIZE << order);
+
+	/* Mark all AFSRs as invalid so that the trap handler will
+	 * log new new information there.
+	 */
+	for (i = 0; i < 2 * NR_CPUS; i++)
+		cheetah_error_log[i].afsr = CHAFSR_INVALID;
+
+	__asm__ ("rdpr %%ver, %0" : "=r" (ver));
+	if ((ver >> 32) == __JALAPENO_ID ||
+	    (ver >> 32) == __SERRANO_ID) {
+		cheetah_error_table = &__jalapeno_error_table[0];
+		cheetah_afsr_errors = JPAFSR_ERRORS;
+	} else if ((ver >> 32) == 0x003e0015) {
+		cheetah_error_table = &__cheetah_plus_error_table[0];
+		cheetah_afsr_errors = CHPAFSR_ERRORS;
+	} else {
+		cheetah_error_table = &__cheetah_error_table[0];
+		cheetah_afsr_errors = CHAFSR_ERRORS;
+	}
+
+	/* Now patch trap tables. */
+	memcpy(tl0_fecc, cheetah_fecc_trap_vector, (8 * 4));
+	memcpy(tl1_fecc, cheetah_fecc_trap_vector_tl1, (8 * 4));
+	memcpy(tl0_cee, cheetah_cee_trap_vector, (8 * 4));
+	memcpy(tl1_cee, cheetah_cee_trap_vector_tl1, (8 * 4));
+	memcpy(tl0_iae, cheetah_deferred_trap_vector, (8 * 4));
+	memcpy(tl1_iae, cheetah_deferred_trap_vector_tl1, (8 * 4));
+	memcpy(tl0_dae, cheetah_deferred_trap_vector, (8 * 4));
+	memcpy(tl1_dae, cheetah_deferred_trap_vector_tl1, (8 * 4));
+	if (tlb_type == cheetah_plus) {
+		memcpy(tl0_dcpe, cheetah_plus_dcpe_trap_vector, (8 * 4));
+		memcpy(tl1_dcpe, cheetah_plus_dcpe_trap_vector_tl1, (8 * 4));
+		memcpy(tl0_icpe, cheetah_plus_icpe_trap_vector, (8 * 4));
+		memcpy(tl1_icpe, cheetah_plus_icpe_trap_vector_tl1, (8 * 4));
+	}
+	flushi(PAGE_OFFSET);
+}
+
+static void cheetah_flush_ecache(void)
+{
+	unsigned long flush_base = ecache_flush_physbase;
+	unsigned long flush_linesize = ecache_flush_linesize;
+	unsigned long flush_size = ecache_flush_size;
+
+	__asm__ __volatile__("1: subcc	%0, %4, %0\n\t"
+			     "   bne,pt	%%xcc, 1b\n\t"
+			     "    ldxa	[%2 + %0] %3, %%g0\n\t"
+			     : "=&r" (flush_size)
+			     : "0" (flush_size), "r" (flush_base),
+			       "i" (ASI_PHYS_USE_EC), "r" (flush_linesize));
+}
+
+static void cheetah_flush_ecache_line(unsigned long physaddr)
+{
+	unsigned long alias;
+
+	physaddr &= ~(8UL - 1UL);
+	physaddr = (ecache_flush_physbase +
+		    (physaddr & ((ecache_flush_size>>1UL) - 1UL)));
+	alias = physaddr + (ecache_flush_size >> 1UL);
+	__asm__ __volatile__("ldxa [%0] %2, %%g0\n\t"
+			     "ldxa [%1] %2, %%g0\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (physaddr), "r" (alias),
+			       "i" (ASI_PHYS_USE_EC));
+}
+
+/* Unfortunately, the diagnostic access to the I-cache tags we need to
+ * use to clear the thing interferes with I-cache coherency transactions.
+ *
+ * So we must only flush the I-cache when it is disabled.
+ */
+static void __cheetah_flush_icache(void)
+{
+	unsigned int icache_size, icache_line_size;
+	unsigned long addr;
+
+	icache_size = local_cpu_data().icache_size;
+	icache_line_size = local_cpu_data().icache_line_size;
+
+	/* Clear the valid bits in all the tags. */
+	for (addr = 0; addr < icache_size; addr += icache_line_size) {
+		__asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
+				     "membar #Sync"
+				     : /* no outputs */
+				     : "r" (addr | (2 << 3)),
+				       "i" (ASI_IC_TAG));
+	}
+}
+
+static void cheetah_flush_icache(void)
+{
+	unsigned long dcu_save;
+
+	/* Save current DCU, disable I-cache. */
+	__asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
+			     "or %0, %2, %%g1\n\t"
+			     "stxa %%g1, [%%g0] %1\n\t"
+			     "membar #Sync"
+			     : "=r" (dcu_save)
+			     : "i" (ASI_DCU_CONTROL_REG), "i" (DCU_IC)
+			     : "g1");
+
+	__cheetah_flush_icache();
+
+	/* Restore DCU register */
+	__asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "r" (dcu_save), "i" (ASI_DCU_CONTROL_REG));
+}
+
+static void cheetah_flush_dcache(void)
+{
+	unsigned int dcache_size, dcache_line_size;
+	unsigned long addr;
+
+	dcache_size = local_cpu_data().dcache_size;
+	dcache_line_size = local_cpu_data().dcache_line_size;
+
+	for (addr = 0; addr < dcache_size; addr += dcache_line_size) {
+		__asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
+				     "membar #Sync"
+				     : /* no outputs */
+				     : "r" (addr), "i" (ASI_DCACHE_TAG));
+	}
+}
+
+/* In order to make the even parity correct we must do two things.
+ * First, we clear DC_data_parity and set DC_utag to an appropriate value.
+ * Next, we clear out all 32-bytes of data for that line.  Data of
+ * all-zero + tag parity value of zero == correct parity.
+ */
+static void cheetah_plus_zap_dcache_parity(void)
+{
+	unsigned int dcache_size, dcache_line_size;
+	unsigned long addr;
+
+	dcache_size = local_cpu_data().dcache_size;
+	dcache_line_size = local_cpu_data().dcache_line_size;
+
+	for (addr = 0; addr < dcache_size; addr += dcache_line_size) {
+		unsigned long tag = (addr >> 14);
+		unsigned long line;
+
+		__asm__ __volatile__("membar	#Sync\n\t"
+				     "stxa	%0, [%1] %2\n\t"
+				     "membar	#Sync"
+				     : /* no outputs */
+				     : "r" (tag), "r" (addr),
+				       "i" (ASI_DCACHE_UTAG));
+		for (line = addr; line < addr + dcache_line_size; line += 8)
+			__asm__ __volatile__("membar	#Sync\n\t"
+					     "stxa	%%g0, [%0] %1\n\t"
+					     "membar	#Sync"
+					     : /* no outputs */
+					     : "r" (line),
+					       "i" (ASI_DCACHE_DATA));
+	}
+}
+
+/* Conversion tables used to frob Cheetah AFSR syndrome values into
+ * something palatable to the memory controller driver get_unumber
+ * routine.
+ */
+#define MT0	137
+#define MT1	138
+#define MT2	139
+#define NONE	254
+#define MTC0	140
+#define MTC1	141
+#define MTC2	142
+#define MTC3	143
+#define C0	128
+#define C1	129
+#define C2	130
+#define C3	131
+#define C4	132
+#define C5	133
+#define C6	134
+#define C7	135
+#define C8	136
+#define M2	144
+#define M3	145
+#define M4	146
+#define M	147
+static unsigned char cheetah_ecc_syntab[] = {
+/*00*/NONE, C0, C1, M2, C2, M2, M3, 47, C3, M2, M2, 53, M2, 41, 29, M,
+/*01*/C4, M, M, 50, M2, 38, 25, M2, M2, 33, 24, M2, 11, M, M2, 16,
+/*02*/C5, M, M, 46, M2, 37, 19, M2, M, 31, 32, M, 7, M2, M2, 10,
+/*03*/M2, 40, 13, M2, 59, M, M2, 66, M, M2, M2, 0, M2, 67, 71, M,
+/*04*/C6, M, M, 43, M, 36, 18, M, M2, 49, 15, M, 63, M2, M2, 6,
+/*05*/M2, 44, 28, M2, M, M2, M2, 52, 68, M2, M2, 62, M2, M3, M3, M4,
+/*06*/M2, 26, 106, M2, 64, M, M2, 2, 120, M, M2, M3, M, M3, M3, M4,
+/*07*/116, M2, M2, M3, M2, M3, M, M4, M2, 58, 54, M2, M, M4, M4, M3,
+/*08*/C7, M2, M, 42, M, 35, 17, M2, M, 45, 14, M2, 21, M2, M2, 5,
+/*09*/M, 27, M, M, 99, M, M, 3, 114, M2, M2, 20, M2, M3, M3, M,
+/*0a*/M2, 23, 113, M2, 112, M2, M, 51, 95, M, M2, M3, M2, M3, M3, M2,
+/*0b*/103, M, M2, M3, M2, M3, M3, M4, M2, 48, M, M, 73, M2, M, M3,
+/*0c*/M2, 22, 110, M2, 109, M2, M, 9, 108, M2, M, M3, M2, M3, M3, M,
+/*0d*/102, M2, M, M, M2, M3, M3, M, M2, M3, M3, M2, M, M4, M, M3,
+/*0e*/98, M, M2, M3, M2, M, M3, M4, M2, M3, M3, M4, M3, M, M, M,
+/*0f*/M2, M3, M3, M, M3, M, M, M, 56, M4, M, M3, M4, M, M, M,
+/*10*/C8, M, M2, 39, M, 34, 105, M2, M, 30, 104, M, 101, M, M, 4,
+/*11*/M, M, 100, M, 83, M, M2, 12, 87, M, M, 57, M2, M, M3, M,
+/*12*/M2, 97, 82, M2, 78, M2, M2, 1, 96, M, M, M, M, M, M3, M2,
+/*13*/94, M, M2, M3, M2, M, M3, M, M2, M, 79, M, 69, M, M4, M,
+/*14*/M2, 93, 92, M, 91, M, M2, 8, 90, M2, M2, M, M, M, M, M4,
+/*15*/89, M, M, M3, M2, M3, M3, M, M, M, M3, M2, M3, M2, M, M3,
+/*16*/86, M, M2, M3, M2, M, M3, M, M2, M, M3, M, M3, M, M, M3,
+/*17*/M, M, M3, M2, M3, M2, M4, M, 60, M, M2, M3, M4, M, M, M2,
+/*18*/M2, 88, 85, M2, 84, M, M2, 55, 81, M2, M2, M3, M2, M3, M3, M4,
+/*19*/77, M, M, M, M2, M3, M, M, M2, M3, M3, M4, M3, M2, M, M,
+/*1a*/74, M, M2, M3, M, M, M3, M, M, M, M3, M, M3, M, M4, M3,
+/*1b*/M2, 70, 107, M4, 65, M2, M2, M, 127, M, M, M, M2, M3, M3, M,
+/*1c*/80, M2, M2, 72, M, 119, 118, M, M2, 126, 76, M, 125, M, M4, M3,
+/*1d*/M2, 115, 124, M, 75, M, M, M3, 61, M, M4, M, M4, M, M, M,
+/*1e*/M, 123, 122, M4, 121, M4, M, M3, 117, M2, M2, M3, M4, M3, M, M,
+/*1f*/111, M, M, M, M4, M3, M3, M, M, M, M3, M, M3, M2, M, M
+};
+static unsigned char cheetah_mtag_syntab[] = {
+       NONE, MTC0,
+       MTC1, NONE,
+       MTC2, NONE,
+       NONE, MT0,
+       MTC3, NONE,
+       NONE, MT1,
+       NONE, MT2,
+       NONE, NONE
+};
+
+/* Return the highest priority error conditon mentioned. */
+static inline unsigned long cheetah_get_hipri(unsigned long afsr)
+{
+	unsigned long tmp = 0;
+	int i;
+
+	for (i = 0; cheetah_error_table[i].mask; i++) {
+		if ((tmp = (afsr & cheetah_error_table[i].mask)) != 0UL)
+			return tmp;
+	}
+	return tmp;
+}
+
+static const char *cheetah_get_string(unsigned long bit)
+{
+	int i;
+
+	for (i = 0; cheetah_error_table[i].mask; i++) {
+		if ((bit & cheetah_error_table[i].mask) != 0UL)
+			return cheetah_error_table[i].name;
+	}
+	return "???";
+}
+
+static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *info,
+			       unsigned long afsr, unsigned long afar, int recoverable)
+{
+	unsigned long hipri;
+	char unum[256];
+
+	printk("%s" "ERROR(%d): Cheetah error trap taken afsr[%016lx] afar[%016lx] TL1(%d)\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       afsr, afar,
+	       (afsr & CHAFSR_TL1) ? 1 : 0);
+	printk("%s" "ERROR(%d): TPC[%lx] TNPC[%lx] O7[%lx] TSTATE[%lx]\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate);
+	printk("%s" "ERROR(%d): ",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id());
+	printk("TPC<%pS>\n", (void *) regs->tpc);
+	printk("%s" "ERROR(%d): M_SYND(%lx),  E_SYND(%lx)%s%s\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT,
+	       (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT,
+	       (afsr & CHAFSR_ME) ? ", Multiple Errors" : "",
+	       (afsr & CHAFSR_PRIV) ? ", Privileged" : "");
+	hipri = cheetah_get_hipri(afsr);
+	printk("%s" "ERROR(%d): Highest priority error (%016lx) \"%s\"\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       hipri, cheetah_get_string(hipri));
+
+	/* Try to get unumber if relevant. */
+#define ESYND_ERRORS	(CHAFSR_IVC | CHAFSR_IVU | \
+			 CHAFSR_CPC | CHAFSR_CPU | \
+			 CHAFSR_UE  | CHAFSR_CE  | \
+			 CHAFSR_EDC | CHAFSR_EDU  | \
+			 CHAFSR_UCC | CHAFSR_UCU  | \
+			 CHAFSR_WDU | CHAFSR_WDC)
+#define MSYND_ERRORS	(CHAFSR_EMC | CHAFSR_EMU)
+	if (afsr & ESYND_ERRORS) {
+		int syndrome;
+		int ret;
+
+		syndrome = (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT;
+		syndrome = cheetah_ecc_syntab[syndrome];
+		ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum));
+		if (ret != -1)
+			printk("%s" "ERROR(%d): AFAR E-syndrome [%s]\n",
+			       (recoverable ? KERN_WARNING : KERN_CRIT),
+			       smp_processor_id(), unum);
+	} else if (afsr & MSYND_ERRORS) {
+		int syndrome;
+		int ret;
+
+		syndrome = (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT;
+		syndrome = cheetah_mtag_syntab[syndrome];
+		ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum));
+		if (ret != -1)
+			printk("%s" "ERROR(%d): AFAR M-syndrome [%s]\n",
+			       (recoverable ? KERN_WARNING : KERN_CRIT),
+			       smp_processor_id(), unum);
+	}
+
+	/* Now dump the cache snapshots. */
+	printk("%s" "ERROR(%d): D-cache idx[%x] tag[%016lx] utag[%016lx] stag[%016lx]\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       (int) info->dcache_index,
+	       info->dcache_tag,
+	       info->dcache_utag,
+	       info->dcache_stag);
+	printk("%s" "ERROR(%d): D-cache data0[%016lx] data1[%016lx] data2[%016lx] data3[%016lx]\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       info->dcache_data[0],
+	       info->dcache_data[1],
+	       info->dcache_data[2],
+	       info->dcache_data[3]);
+	printk("%s" "ERROR(%d): I-cache idx[%x] tag[%016lx] utag[%016lx] stag[%016lx] "
+	       "u[%016lx] l[%016lx]\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       (int) info->icache_index,
+	       info->icache_tag,
+	       info->icache_utag,
+	       info->icache_stag,
+	       info->icache_upper,
+	       info->icache_lower);
+	printk("%s" "ERROR(%d): I-cache INSN0[%016lx] INSN1[%016lx] INSN2[%016lx] INSN3[%016lx]\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       info->icache_data[0],
+	       info->icache_data[1],
+	       info->icache_data[2],
+	       info->icache_data[3]);
+	printk("%s" "ERROR(%d): I-cache INSN4[%016lx] INSN5[%016lx] INSN6[%016lx] INSN7[%016lx]\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       info->icache_data[4],
+	       info->icache_data[5],
+	       info->icache_data[6],
+	       info->icache_data[7]);
+	printk("%s" "ERROR(%d): E-cache idx[%x] tag[%016lx]\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       (int) info->ecache_index, info->ecache_tag);
+	printk("%s" "ERROR(%d): E-cache data0[%016lx] data1[%016lx] data2[%016lx] data3[%016lx]\n",
+	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
+	       info->ecache_data[0],
+	       info->ecache_data[1],
+	       info->ecache_data[2],
+	       info->ecache_data[3]);
+
+	afsr = (afsr & ~hipri) & cheetah_afsr_errors;
+	while (afsr != 0UL) {
+		unsigned long bit = cheetah_get_hipri(afsr);
+
+		printk("%s" "ERROR: Multiple-error (%016lx) \"%s\"\n",
+		       (recoverable ? KERN_WARNING : KERN_CRIT),
+		       bit, cheetah_get_string(bit));
+
+		afsr &= ~bit;
+	}
+
+	if (!recoverable)
+		printk(KERN_CRIT "ERROR: This condition is not recoverable.\n");
+}
+
+static int cheetah_recheck_errors(struct cheetah_err_info *logp)
+{
+	unsigned long afsr, afar;
+	int ret = 0;
+
+	__asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
+			     : "=r" (afsr)
+			     : "i" (ASI_AFSR));
+	if ((afsr & cheetah_afsr_errors) != 0) {
+		if (logp != NULL) {
+			__asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
+					     : "=r" (afar)
+					     : "i" (ASI_AFAR));
+			logp->afsr = afsr;
+			logp->afar = afar;
+		}
+		ret = 1;
+	}
+	__asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
+			     "membar #Sync\n\t"
+			     : : "r" (afsr), "i" (ASI_AFSR));
+
+	return ret;
+}
+
+void cheetah_fecc_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
+{
+	struct cheetah_err_info local_snapshot, *p;
+	int recoverable;
+
+	/* Flush E-cache */
+	cheetah_flush_ecache();
+
+	p = cheetah_get_error_log(afsr);
+	if (!p) {
+		prom_printf("ERROR: Early Fast-ECC error afsr[%016lx] afar[%016lx]\n",
+			    afsr, afar);
+		prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
+			    smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
+		prom_halt();
+	}
+
+	/* Grab snapshot of logged error. */
+	memcpy(&local_snapshot, p, sizeof(local_snapshot));
+
+	/* If the current trap snapshot does not match what the
+	 * trap handler passed along into our args, big trouble.
+	 * In such a case, mark the local copy as invalid.
+	 *
+	 * Else, it matches and we mark the afsr in the non-local
+	 * copy as invalid so we may log new error traps there.
+	 */
+	if (p->afsr != afsr || p->afar != afar)
+		local_snapshot.afsr = CHAFSR_INVALID;
+	else
+		p->afsr = CHAFSR_INVALID;
+
+	cheetah_flush_icache();
+	cheetah_flush_dcache();
+
+	/* Re-enable I-cache/D-cache */
+	__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+			     "or %%g1, %1, %%g1\n\t"
+			     "stxa %%g1, [%%g0] %0\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "i" (ASI_DCU_CONTROL_REG),
+			       "i" (DCU_DC | DCU_IC)
+			     : "g1");
+
+	/* Re-enable error reporting */
+	__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+			     "or %%g1, %1, %%g1\n\t"
+			     "stxa %%g1, [%%g0] %0\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "i" (ASI_ESTATE_ERROR_EN),
+			       "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
+			     : "g1");
+
+	/* Decide if we can continue after handling this trap and
+	 * logging the error.
+	 */
+	recoverable = 1;
+	if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
+		recoverable = 0;
+
+	/* Re-check AFSR/AFAR.  What we are looking for here is whether a new
+	 * error was logged while we had error reporting traps disabled.
+	 */
+	if (cheetah_recheck_errors(&local_snapshot)) {
+		unsigned long new_afsr = local_snapshot.afsr;
+
+		/* If we got a new asynchronous error, die... */
+		if (new_afsr & (CHAFSR_EMU | CHAFSR_EDU |
+				CHAFSR_WDU | CHAFSR_CPU |
+				CHAFSR_IVU | CHAFSR_UE |
+				CHAFSR_BERR | CHAFSR_TO))
+			recoverable = 0;
+	}
+
+	/* Log errors. */
+	cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
+
+	if (!recoverable)
+		panic("Irrecoverable Fast-ECC error trap.\n");
+
+	/* Flush E-cache to kick the error trap handlers out. */
+	cheetah_flush_ecache();
+}
+
+/* Try to fix a correctable error by pushing the line out from
+ * the E-cache.  Recheck error reporting registers to see if the
+ * problem is intermittent.
+ */
+static int cheetah_fix_ce(unsigned long physaddr)
+{
+	unsigned long orig_estate;
+	unsigned long alias1, alias2;
+	int ret;
+
+	/* Make sure correctable error traps are disabled. */
+	__asm__ __volatile__("ldxa	[%%g0] %2, %0\n\t"
+			     "andn	%0, %1, %%g1\n\t"
+			     "stxa	%%g1, [%%g0] %2\n\t"
+			     "membar	#Sync"
+			     : "=&r" (orig_estate)
+			     : "i" (ESTATE_ERROR_CEEN),
+			       "i" (ASI_ESTATE_ERROR_EN)
+			     : "g1");
+
+	/* We calculate alias addresses that will force the
+	 * cache line in question out of the E-cache.  Then
+	 * we bring it back in with an atomic instruction so
+	 * that we get it in some modified/exclusive state,
+	 * then we displace it again to try and get proper ECC
+	 * pushed back into the system.
+	 */
+	physaddr &= ~(8UL - 1UL);
+	alias1 = (ecache_flush_physbase +
+		  (physaddr & ((ecache_flush_size >> 1) - 1)));
+	alias2 = alias1 + (ecache_flush_size >> 1);
+	__asm__ __volatile__("ldxa	[%0] %3, %%g0\n\t"
+			     "ldxa	[%1] %3, %%g0\n\t"
+			     "casxa	[%2] %3, %%g0, %%g0\n\t"
+			     "ldxa	[%0] %3, %%g0\n\t"
+			     "ldxa	[%1] %3, %%g0\n\t"
+			     "membar	#Sync"
+			     : /* no outputs */
+			     : "r" (alias1), "r" (alias2),
+			       "r" (physaddr), "i" (ASI_PHYS_USE_EC));
+
+	/* Did that trigger another error? */
+	if (cheetah_recheck_errors(NULL)) {
+		/* Try one more time. */
+		__asm__ __volatile__("ldxa [%0] %1, %%g0\n\t"
+				     "membar #Sync"
+				     : : "r" (physaddr), "i" (ASI_PHYS_USE_EC));
+		if (cheetah_recheck_errors(NULL))
+			ret = 2;
+		else
+			ret = 1;
+	} else {
+		/* No new error, intermittent problem. */
+		ret = 0;
+	}
+
+	/* Restore error enables. */
+	__asm__ __volatile__("stxa	%0, [%%g0] %1\n\t"
+			     "membar	#Sync"
+			     : : "r" (orig_estate), "i" (ASI_ESTATE_ERROR_EN));
+
+	return ret;
+}
+
+/* Return non-zero if PADDR is a valid physical memory address. */
+static int cheetah_check_main_memory(unsigned long paddr)
+{
+	unsigned long vaddr = PAGE_OFFSET + paddr;
+
+	if (vaddr > (unsigned long) high_memory)
+		return 0;
+
+	return kern_addr_valid(vaddr);
+}
+
+void cheetah_cee_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
+{
+	struct cheetah_err_info local_snapshot, *p;
+	int recoverable, is_memory;
+
+	p = cheetah_get_error_log(afsr);
+	if (!p) {
+		prom_printf("ERROR: Early CEE error afsr[%016lx] afar[%016lx]\n",
+			    afsr, afar);
+		prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
+			    smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
+		prom_halt();
+	}
+
+	/* Grab snapshot of logged error. */
+	memcpy(&local_snapshot, p, sizeof(local_snapshot));
+
+	/* If the current trap snapshot does not match what the
+	 * trap handler passed along into our args, big trouble.
+	 * In such a case, mark the local copy as invalid.
+	 *
+	 * Else, it matches and we mark the afsr in the non-local
+	 * copy as invalid so we may log new error traps there.
+	 */
+	if (p->afsr != afsr || p->afar != afar)
+		local_snapshot.afsr = CHAFSR_INVALID;
+	else
+		p->afsr = CHAFSR_INVALID;
+
+	is_memory = cheetah_check_main_memory(afar);
+
+	if (is_memory && (afsr & CHAFSR_CE) != 0UL) {
+		/* XXX Might want to log the results of this operation
+		 * XXX somewhere... -DaveM
+		 */
+		cheetah_fix_ce(afar);
+	}
+
+	{
+		int flush_all, flush_line;
+
+		flush_all = flush_line = 0;
+		if ((afsr & CHAFSR_EDC) != 0UL) {
+			if ((afsr & cheetah_afsr_errors) == CHAFSR_EDC)
+				flush_line = 1;
+			else
+				flush_all = 1;
+		} else if ((afsr & CHAFSR_CPC) != 0UL) {
+			if ((afsr & cheetah_afsr_errors) == CHAFSR_CPC)
+				flush_line = 1;
+			else
+				flush_all = 1;
+		}
+
+		/* Trap handler only disabled I-cache, flush it. */
+		cheetah_flush_icache();
+
+		/* Re-enable I-cache */
+		__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+				     "or %%g1, %1, %%g1\n\t"
+				     "stxa %%g1, [%%g0] %0\n\t"
+				     "membar #Sync"
+				     : /* no outputs */
+				     : "i" (ASI_DCU_CONTROL_REG),
+				     "i" (DCU_IC)
+				     : "g1");
+
+		if (flush_all)
+			cheetah_flush_ecache();
+		else if (flush_line)
+			cheetah_flush_ecache_line(afar);
+	}
+
+	/* Re-enable error reporting */
+	__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+			     "or %%g1, %1, %%g1\n\t"
+			     "stxa %%g1, [%%g0] %0\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "i" (ASI_ESTATE_ERROR_EN),
+			       "i" (ESTATE_ERROR_CEEN)
+			     : "g1");
+
+	/* Decide if we can continue after handling this trap and
+	 * logging the error.
+	 */
+	recoverable = 1;
+	if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
+		recoverable = 0;
+
+	/* Re-check AFSR/AFAR */
+	(void) cheetah_recheck_errors(&local_snapshot);
+
+	/* Log errors. */
+	cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
+
+	if (!recoverable)
+		panic("Irrecoverable Correctable-ECC error trap.\n");
+}
+
+void cheetah_deferred_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
+{
+	struct cheetah_err_info local_snapshot, *p;
+	int recoverable, is_memory;
+
+#ifdef CONFIG_PCI
+	/* Check for the special PCI poke sequence. */
+	if (pci_poke_in_progress && pci_poke_cpu == smp_processor_id()) {
+		cheetah_flush_icache();
+		cheetah_flush_dcache();
+
+		/* Re-enable I-cache/D-cache */
+		__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+				     "or %%g1, %1, %%g1\n\t"
+				     "stxa %%g1, [%%g0] %0\n\t"
+				     "membar #Sync"
+				     : /* no outputs */
+				     : "i" (ASI_DCU_CONTROL_REG),
+				       "i" (DCU_DC | DCU_IC)
+				     : "g1");
+
+		/* Re-enable error reporting */
+		__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+				     "or %%g1, %1, %%g1\n\t"
+				     "stxa %%g1, [%%g0] %0\n\t"
+				     "membar #Sync"
+				     : /* no outputs */
+				     : "i" (ASI_ESTATE_ERROR_EN),
+				       "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
+				     : "g1");
+
+		(void) cheetah_recheck_errors(NULL);
+
+		pci_poke_faulted = 1;
+		regs->tpc += 4;
+		regs->tnpc = regs->tpc + 4;
+		return;
+	}
+#endif
+
+	p = cheetah_get_error_log(afsr);
+	if (!p) {
+		prom_printf("ERROR: Early deferred error afsr[%016lx] afar[%016lx]\n",
+			    afsr, afar);
+		prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
+			    smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
+		prom_halt();
+	}
+
+	/* Grab snapshot of logged error. */
+	memcpy(&local_snapshot, p, sizeof(local_snapshot));
+
+	/* If the current trap snapshot does not match what the
+	 * trap handler passed along into our args, big trouble.
+	 * In such a case, mark the local copy as invalid.
+	 *
+	 * Else, it matches and we mark the afsr in the non-local
+	 * copy as invalid so we may log new error traps there.
+	 */
+	if (p->afsr != afsr || p->afar != afar)
+		local_snapshot.afsr = CHAFSR_INVALID;
+	else
+		p->afsr = CHAFSR_INVALID;
+
+	is_memory = cheetah_check_main_memory(afar);
+
+	{
+		int flush_all, flush_line;
+
+		flush_all = flush_line = 0;
+		if ((afsr & CHAFSR_EDU) != 0UL) {
+			if ((afsr & cheetah_afsr_errors) == CHAFSR_EDU)
+				flush_line = 1;
+			else
+				flush_all = 1;
+		} else if ((afsr & CHAFSR_BERR) != 0UL) {
+			if ((afsr & cheetah_afsr_errors) == CHAFSR_BERR)
+				flush_line = 1;
+			else
+				flush_all = 1;
+		}
+
+		cheetah_flush_icache();
+		cheetah_flush_dcache();
+
+		/* Re-enable I/D caches */
+		__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+				     "or %%g1, %1, %%g1\n\t"
+				     "stxa %%g1, [%%g0] %0\n\t"
+				     "membar #Sync"
+				     : /* no outputs */
+				     : "i" (ASI_DCU_CONTROL_REG),
+				     "i" (DCU_IC | DCU_DC)
+				     : "g1");
+
+		if (flush_all)
+			cheetah_flush_ecache();
+		else if (flush_line)
+			cheetah_flush_ecache_line(afar);
+	}
+
+	/* Re-enable error reporting */
+	__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+			     "or %%g1, %1, %%g1\n\t"
+			     "stxa %%g1, [%%g0] %0\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "i" (ASI_ESTATE_ERROR_EN),
+			     "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
+			     : "g1");
+
+	/* Decide if we can continue after handling this trap and
+	 * logging the error.
+	 */
+	recoverable = 1;
+	if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
+		recoverable = 0;
+
+	/* Re-check AFSR/AFAR.  What we are looking for here is whether a new
+	 * error was logged while we had error reporting traps disabled.
+	 */
+	if (cheetah_recheck_errors(&local_snapshot)) {
+		unsigned long new_afsr = local_snapshot.afsr;
+
+		/* If we got a new asynchronous error, die... */
+		if (new_afsr & (CHAFSR_EMU | CHAFSR_EDU |
+				CHAFSR_WDU | CHAFSR_CPU |
+				CHAFSR_IVU | CHAFSR_UE |
+				CHAFSR_BERR | CHAFSR_TO))
+			recoverable = 0;
+	}
+
+	/* Log errors. */
+	cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
+
+	/* "Recoverable" here means we try to yank the page from ever
+	 * being newly used again.  This depends upon a few things:
+	 * 1) Must be main memory, and AFAR must be valid.
+	 * 2) If we trapped from user, OK.
+	 * 3) Else, if we trapped from kernel we must find exception
+	 *    table entry (ie. we have to have been accessing user
+	 *    space).
+	 *
+	 * If AFAR is not in main memory, or we trapped from kernel
+	 * and cannot find an exception table entry, it is unacceptable
+	 * to try and continue.
+	 */
+	if (recoverable && is_memory) {
+		if ((regs->tstate & TSTATE_PRIV) == 0UL) {
+			/* OK, usermode access. */
+			recoverable = 1;
+		} else {
+			const struct exception_table_entry *entry;
+
+			entry = search_exception_tables(regs->tpc);
+			if (entry) {
+				/* OK, kernel access to userspace. */
+				recoverable = 1;
+
+			} else {
+				/* BAD, privileged state is corrupted. */
+				recoverable = 0;
+			}
+
+			if (recoverable) {
+				if (pfn_valid(afar >> PAGE_SHIFT))
+					get_page(pfn_to_page(afar >> PAGE_SHIFT));
+				else
+					recoverable = 0;
+
+				/* Only perform fixup if we still have a
+				 * recoverable condition.
+				 */
+				if (recoverable) {
+					regs->tpc = entry->fixup;
+					regs->tnpc = regs->tpc + 4;
+				}
+			}
+		}
+	} else {
+		recoverable = 0;
+	}
+
+	if (!recoverable)
+		panic("Irrecoverable deferred error trap.\n");
+}
+
+/* Handle a D/I cache parity error trap.  TYPE is encoded as:
+ *
+ * Bit0:	0=dcache,1=icache
+ * Bit1:	0=recoverable,1=unrecoverable
+ *
+ * The hardware has disabled both the I-cache and D-cache in
+ * the %dcr register.  
+ */
+void cheetah_plus_parity_error(int type, struct pt_regs *regs)
+{
+	if (type & 0x1)
+		__cheetah_flush_icache();
+	else
+		cheetah_plus_zap_dcache_parity();
+	cheetah_flush_dcache();
+
+	/* Re-enable I-cache/D-cache */
+	__asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
+			     "or %%g1, %1, %%g1\n\t"
+			     "stxa %%g1, [%%g0] %0\n\t"
+			     "membar #Sync"
+			     : /* no outputs */
+			     : "i" (ASI_DCU_CONTROL_REG),
+			       "i" (DCU_DC | DCU_IC)
+			     : "g1");
+
+	if (type & 0x2) {
+		printk(KERN_EMERG "CPU[%d]: Cheetah+ %c-cache parity error at TPC[%016lx]\n",
+		       smp_processor_id(),
+		       (type & 0x1) ? 'I' : 'D',
+		       regs->tpc);
+		printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc);
+		panic("Irrecoverable Cheetah+ parity error.");
+	}
+
+	printk(KERN_WARNING "CPU[%d]: Cheetah+ %c-cache parity error at TPC[%016lx]\n",
+	       smp_processor_id(),
+	       (type & 0x1) ? 'I' : 'D',
+	       regs->tpc);
+	printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc);
+}
+
+struct sun4v_error_entry {
+	u64		err_handle;
+	u64		err_stick;
+
+	u32		err_type;
+#define SUN4V_ERR_TYPE_UNDEFINED	0
+#define SUN4V_ERR_TYPE_UNCORRECTED_RES	1
+#define SUN4V_ERR_TYPE_PRECISE_NONRES	2
+#define SUN4V_ERR_TYPE_DEFERRED_NONRES	3
+#define SUN4V_ERR_TYPE_WARNING_RES	4
+
+	u32		err_attrs;
+#define SUN4V_ERR_ATTRS_PROCESSOR	0x00000001
+#define SUN4V_ERR_ATTRS_MEMORY		0x00000002
+#define SUN4V_ERR_ATTRS_PIO		0x00000004
+#define SUN4V_ERR_ATTRS_INT_REGISTERS	0x00000008
+#define SUN4V_ERR_ATTRS_FPU_REGISTERS	0x00000010
+#define SUN4V_ERR_ATTRS_USER_MODE	0x01000000
+#define SUN4V_ERR_ATTRS_PRIV_MODE	0x02000000
+#define SUN4V_ERR_ATTRS_RES_QUEUE_FULL	0x80000000
+
+	u64		err_raddr;
+	u32		err_size;
+	u16		err_cpu;
+	u16		err_pad;
+};
+
+static atomic_t sun4v_resum_oflow_cnt = ATOMIC_INIT(0);
+static atomic_t sun4v_nonresum_oflow_cnt = ATOMIC_INIT(0);
+
+static const char *sun4v_err_type_to_str(u32 type)
+{
+	switch (type) {
+	case SUN4V_ERR_TYPE_UNDEFINED:
+		return "undefined";
+	case SUN4V_ERR_TYPE_UNCORRECTED_RES:
+		return "uncorrected resumable";
+	case SUN4V_ERR_TYPE_PRECISE_NONRES:
+		return "precise nonresumable";
+	case SUN4V_ERR_TYPE_DEFERRED_NONRES:
+		return "deferred nonresumable";
+	case SUN4V_ERR_TYPE_WARNING_RES:
+		return "warning resumable";
+	default:
+		return "unknown";
+	};
+}
+
+static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent, int cpu, const char *pfx, atomic_t *ocnt)
+{
+	int cnt;
+
+	printk("%s: Reporting on cpu %d\n", pfx, cpu);
+	printk("%s: err_handle[%lx] err_stick[%lx] err_type[%08x:%s]\n",
+	       pfx,
+	       ent->err_handle, ent->err_stick,
+	       ent->err_type,
+	       sun4v_err_type_to_str(ent->err_type));
+	printk("%s: err_attrs[%08x:%s %s %s %s %s %s %s %s]\n",
+	       pfx,
+	       ent->err_attrs,
+	       ((ent->err_attrs & SUN4V_ERR_ATTRS_PROCESSOR) ?
+		"processor" : ""),
+	       ((ent->err_attrs & SUN4V_ERR_ATTRS_MEMORY) ?
+		"memory" : ""),
+	       ((ent->err_attrs & SUN4V_ERR_ATTRS_PIO) ?
+		"pio" : ""),
+	       ((ent->err_attrs & SUN4V_ERR_ATTRS_INT_REGISTERS) ?
+		"integer-regs" : ""),
+	       ((ent->err_attrs & SUN4V_ERR_ATTRS_FPU_REGISTERS) ?
+		"fpu-regs" : ""),
+	       ((ent->err_attrs & SUN4V_ERR_ATTRS_USER_MODE) ?
+		"user" : ""),
+	       ((ent->err_attrs & SUN4V_ERR_ATTRS_PRIV_MODE) ?
+		"privileged" : ""),
+	       ((ent->err_attrs & SUN4V_ERR_ATTRS_RES_QUEUE_FULL) ?
+		"queue-full" : ""));
+	printk("%s: err_raddr[%016lx] err_size[%u] err_cpu[%u]\n",
+	       pfx,
+	       ent->err_raddr, ent->err_size, ent->err_cpu);
+
+	show_regs(regs);
+
+	if ((cnt = atomic_read(ocnt)) != 0) {
+		atomic_set(ocnt, 0);
+		wmb();
+		printk("%s: Queue overflowed %d times.\n",
+		       pfx, cnt);
+	}
+}
+
+/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
+ * Log the event and clear the first word of the entry.
+ */
+void sun4v_resum_error(struct pt_regs *regs, unsigned long offset)
+{
+	struct sun4v_error_entry *ent, local_copy;
+	struct trap_per_cpu *tb;
+	unsigned long paddr;
+	int cpu;
+
+	cpu = get_cpu();
+
+	tb = &trap_block[cpu];
+	paddr = tb->resum_kernel_buf_pa + offset;
+	ent = __va(paddr);
+
+	memcpy(&local_copy, ent, sizeof(struct sun4v_error_entry));
+
+	/* We have a local copy now, so release the entry.  */
+	ent->err_handle = 0;
+	wmb();
+
+	put_cpu();
+
+	if (ent->err_type == SUN4V_ERR_TYPE_WARNING_RES) {
+		/* If err_type is 0x4, it's a powerdown request.  Do
+		 * not do the usual resumable error log because that
+		 * makes it look like some abnormal error.
+		 */
+		printk(KERN_INFO "Power down request...\n");
+		kill_cad_pid(SIGINT, 1);
+		return;
+	}
+
+	sun4v_log_error(regs, &local_copy, cpu,
+			KERN_ERR "RESUMABLE ERROR",
+			&sun4v_resum_oflow_cnt);
+}
+
+/* If we try to printk() we'll probably make matters worse, by trying
+ * to retake locks this cpu already holds or causing more errors. So
+ * just bump a counter, and we'll report these counter bumps above.
+ */
+void sun4v_resum_overflow(struct pt_regs *regs)
+{
+	atomic_inc(&sun4v_resum_oflow_cnt);
+}
+
+/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
+ * Log the event, clear the first word of the entry, and die.
+ */
+void sun4v_nonresum_error(struct pt_regs *regs, unsigned long offset)
+{
+	struct sun4v_error_entry *ent, local_copy;
+	struct trap_per_cpu *tb;
+	unsigned long paddr;
+	int cpu;
+
+	cpu = get_cpu();
+
+	tb = &trap_block[cpu];
+	paddr = tb->nonresum_kernel_buf_pa + offset;
+	ent = __va(paddr);
+
+	memcpy(&local_copy, ent, sizeof(struct sun4v_error_entry));
+
+	/* We have a local copy now, so release the entry.  */
+	ent->err_handle = 0;
+	wmb();
+
+	put_cpu();
+
+#ifdef CONFIG_PCI
+	/* Check for the special PCI poke sequence. */
+	if (pci_poke_in_progress && pci_poke_cpu == cpu) {
+		pci_poke_faulted = 1;
+		regs->tpc += 4;
+		regs->tnpc = regs->tpc + 4;
+		return;
+	}
+#endif
+
+	sun4v_log_error(regs, &local_copy, cpu,
+			KERN_EMERG "NON-RESUMABLE ERROR",
+			&sun4v_nonresum_oflow_cnt);
+
+	panic("Non-resumable error.");
+}
+
+/* If we try to printk() we'll probably make matters worse, by trying
+ * to retake locks this cpu already holds or causing more errors. So
+ * just bump a counter, and we'll report these counter bumps above.
+ */
+void sun4v_nonresum_overflow(struct pt_regs *regs)
+{
+	/* XXX Actually even this can make not that much sense.  Perhaps
+	 * XXX we should just pull the plug and panic directly from here?
+	 */
+	atomic_inc(&sun4v_nonresum_oflow_cnt);
+}
+
+unsigned long sun4v_err_itlb_vaddr;
+unsigned long sun4v_err_itlb_ctx;
+unsigned long sun4v_err_itlb_pte;
+unsigned long sun4v_err_itlb_error;
+
+void sun4v_itlb_error_report(struct pt_regs *regs, int tl)
+{
+	if (tl > 1)
+		dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+
+	printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n",
+	       regs->tpc, tl);
+	printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc);
+	printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
+	printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n",
+	       (void *) regs->u_regs[UREG_I7]);
+	printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] "
+	       "pte[%lx] error[%lx]\n",
+	       sun4v_err_itlb_vaddr, sun4v_err_itlb_ctx,
+	       sun4v_err_itlb_pte, sun4v_err_itlb_error);
+
+	prom_halt();
+}
+
+unsigned long sun4v_err_dtlb_vaddr;
+unsigned long sun4v_err_dtlb_ctx;
+unsigned long sun4v_err_dtlb_pte;
+unsigned long sun4v_err_dtlb_error;
+
+void sun4v_dtlb_error_report(struct pt_regs *regs, int tl)
+{
+	if (tl > 1)
+		dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+
+	printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n",
+	       regs->tpc, tl);
+	printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc);
+	printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
+	printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n",
+	       (void *) regs->u_regs[UREG_I7]);
+	printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] "
+	       "pte[%lx] error[%lx]\n",
+	       sun4v_err_dtlb_vaddr, sun4v_err_dtlb_ctx,
+	       sun4v_err_dtlb_pte, sun4v_err_dtlb_error);
+
+	prom_halt();
+}
+
+void hypervisor_tlbop_error(unsigned long err, unsigned long op)
+{
+	printk(KERN_CRIT "SUN4V: TLB hv call error %lu for op %lu\n",
+	       err, op);
+}
+
+void hypervisor_tlbop_error_xcall(unsigned long err, unsigned long op)
+{
+	printk(KERN_CRIT "SUN4V: XCALL TLB hv call error %lu for op %lu\n",
+	       err, op);
+}
+
+void do_fpe_common(struct pt_regs *regs)
+{
+	if (regs->tstate & TSTATE_PRIV) {
+		regs->tpc = regs->tnpc;
+		regs->tnpc += 4;
+	} else {
+		unsigned long fsr = current_thread_info()->xfsr[0];
+		siginfo_t info;
+
+		if (test_thread_flag(TIF_32BIT)) {
+			regs->tpc &= 0xffffffff;
+			regs->tnpc &= 0xffffffff;
+		}
+		info.si_signo = SIGFPE;
+		info.si_errno = 0;
+		info.si_addr = (void __user *)regs->tpc;
+		info.si_trapno = 0;
+		info.si_code = __SI_FAULT;
+		if ((fsr & 0x1c000) == (1 << 14)) {
+			if (fsr & 0x10)
+				info.si_code = FPE_FLTINV;
+			else if (fsr & 0x08)
+				info.si_code = FPE_FLTOVF;
+			else if (fsr & 0x04)
+				info.si_code = FPE_FLTUND;
+			else if (fsr & 0x02)
+				info.si_code = FPE_FLTDIV;
+			else if (fsr & 0x01)
+				info.si_code = FPE_FLTRES;
+		}
+		force_sig_info(SIGFPE, &info, current);
+	}
+}
+
+void do_fpieee(struct pt_regs *regs)
+{
+	if (notify_die(DIE_TRAP, "fpu exception ieee", regs,
+		       0, 0x24, SIGFPE) == NOTIFY_STOP)
+		return;
+
+	do_fpe_common(regs);
+}
+
+extern int do_mathemu(struct pt_regs *, struct fpustate *);
+
+void do_fpother(struct pt_regs *regs)
+{
+	struct fpustate *f = FPUSTATE;
+	int ret = 0;
+
+	if (notify_die(DIE_TRAP, "fpu exception other", regs,
+		       0, 0x25, SIGFPE) == NOTIFY_STOP)
+		return;
+
+	switch ((current_thread_info()->xfsr[0] & 0x1c000)) {
+	case (2 << 14): /* unfinished_FPop */
+	case (3 << 14): /* unimplemented_FPop */
+		ret = do_mathemu(regs, f);
+		break;
+	}
+	if (ret)
+		return;
+	do_fpe_common(regs);
+}
+
+void do_tof(struct pt_regs *regs)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "tagged arithmetic overflow", regs,
+		       0, 0x26, SIGEMT) == NOTIFY_STOP)
+		return;
+
+	if (regs->tstate & TSTATE_PRIV)
+		die_if_kernel("Penguin overflow trap from kernel mode", regs);
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	info.si_signo = SIGEMT;
+	info.si_errno = 0;
+	info.si_code = EMT_TAGOVF;
+	info.si_addr = (void __user *)regs->tpc;
+	info.si_trapno = 0;
+	force_sig_info(SIGEMT, &info, current);
+}
+
+void do_div0(struct pt_regs *regs)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "integer division by zero", regs,
+		       0, 0x28, SIGFPE) == NOTIFY_STOP)
+		return;
+
+	if (regs->tstate & TSTATE_PRIV)
+		die_if_kernel("TL0: Kernel divide by zero.", regs);
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	info.si_signo = SIGFPE;
+	info.si_errno = 0;
+	info.si_code = FPE_INTDIV;
+	info.si_addr = (void __user *)regs->tpc;
+	info.si_trapno = 0;
+	force_sig_info(SIGFPE, &info, current);
+}
+
+static void instruction_dump(unsigned int *pc)
+{
+	int i;
+
+	if ((((unsigned long) pc) & 3))
+		return;
+
+	printk("Instruction DUMP:");
+	for (i = -3; i < 6; i++)
+		printk("%c%08x%c",i?' ':'<',pc[i],i?' ':'>');
+	printk("\n");
+}
+
+static void user_instruction_dump(unsigned int __user *pc)
+{
+	int i;
+	unsigned int buf[9];
+	
+	if ((((unsigned long) pc) & 3))
+		return;
+		
+	if (copy_from_user(buf, pc - 3, sizeof(buf)))
+		return;
+
+	printk("Instruction DUMP:");
+	for (i = 0; i < 9; i++)
+		printk("%c%08x%c",i==3?' ':'<',buf[i],i==3?' ':'>');
+	printk("\n");
+}
+
+void show_stack(struct task_struct *tsk, unsigned long *_ksp)
+{
+	unsigned long fp, thread_base, ksp;
+	struct thread_info *tp;
+	int count = 0;
+
+	ksp = (unsigned long) _ksp;
+	if (!tsk)
+		tsk = current;
+	tp = task_thread_info(tsk);
+	if (ksp == 0UL) {
+		if (tsk == current)
+			asm("mov %%fp, %0" : "=r" (ksp));
+		else
+			ksp = tp->ksp;
+	}
+	if (tp == current_thread_info())
+		flushw_all();
+
+	fp = ksp + STACK_BIAS;
+	thread_base = (unsigned long) tp;
+
+	printk("Call Trace:\n");
+	do {
+		struct sparc_stackf *sf;
+		struct pt_regs *regs;
+		unsigned long pc;
+
+		if (!kstack_valid(tp, fp))
+			break;
+		sf = (struct sparc_stackf *) fp;
+		regs = (struct pt_regs *) (sf + 1);
+
+		if (kstack_is_trap_frame(tp, regs)) {
+			if (!(regs->tstate & TSTATE_PRIV))
+				break;
+			pc = regs->tpc;
+			fp = regs->u_regs[UREG_I6] + STACK_BIAS;
+		} else {
+			pc = sf->callers_pc;
+			fp = (unsigned long)sf->fp + STACK_BIAS;
+		}
+
+		printk(" [%016lx] %pS\n", pc, (void *) pc);
+	} while (++count < 16);
+}
+
+void dump_stack(void)
+{
+	show_stack(current, NULL);
+}
+
+EXPORT_SYMBOL(dump_stack);
+
+static inline int is_kernel_stack(struct task_struct *task,
+				  struct reg_window *rw)
+{
+	unsigned long rw_addr = (unsigned long) rw;
+	unsigned long thread_base, thread_end;
+
+	if (rw_addr < PAGE_OFFSET) {
+		if (task != &init_task)
+			return 0;
+	}
+
+	thread_base = (unsigned long) task_stack_page(task);
+	thread_end = thread_base + sizeof(union thread_union);
+	if (rw_addr >= thread_base &&
+	    rw_addr < thread_end &&
+	    !(rw_addr & 0x7UL))
+		return 1;
+
+	return 0;
+}
+
+static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
+{
+	unsigned long fp = rw->ins[6];
+
+	if (!fp)
+		return NULL;
+
+	return (struct reg_window *) (fp + STACK_BIAS);
+}
+
+void die_if_kernel(char *str, struct pt_regs *regs)
+{
+	static int die_counter;
+	int count = 0;
+	
+	/* Amuse the user. */
+	printk(
+"              \\|/ ____ \\|/\n"
+"              \"@'/ .. \\`@\"\n"
+"              /_| \\__/ |_\\\n"
+"                 \\__U_/\n");
+
+	printk("%s(%d): %s [#%d]\n", current->comm, task_pid_nr(current), str, ++die_counter);
+	notify_die(DIE_OOPS, str, regs, 0, 255, SIGSEGV);
+	__asm__ __volatile__("flushw");
+	show_regs(regs);
+	add_taint(TAINT_DIE);
+	if (regs->tstate & TSTATE_PRIV) {
+		struct reg_window *rw = (struct reg_window *)
+			(regs->u_regs[UREG_FP] + STACK_BIAS);
+
+		/* Stop the back trace when we hit userland or we
+		 * find some badly aligned kernel stack.
+		 */
+		while (rw &&
+		       count++ < 30&&
+		       is_kernel_stack(current, rw)) {
+			printk("Caller[%016lx]: %pS\n", rw->ins[7],
+			       (void *) rw->ins[7]);
+
+			rw = kernel_stack_up(rw);
+		}
+		instruction_dump ((unsigned int *) regs->tpc);
+	} else {
+		if (test_thread_flag(TIF_32BIT)) {
+			regs->tpc &= 0xffffffff;
+			regs->tnpc &= 0xffffffff;
+		}
+		user_instruction_dump ((unsigned int __user *) regs->tpc);
+	}
+	if (regs->tstate & TSTATE_PRIV)
+		do_exit(SIGKILL);
+	do_exit(SIGSEGV);
+}
+
+#define VIS_OPCODE_MASK	((0x3 << 30) | (0x3f << 19))
+#define VIS_OPCODE_VAL	((0x2 << 30) | (0x36 << 19))
+
+extern int handle_popc(u32 insn, struct pt_regs *regs);
+extern int handle_ldf_stq(u32 insn, struct pt_regs *regs);
+
+void do_illegal_instruction(struct pt_regs *regs)
+{
+	unsigned long pc = regs->tpc;
+	unsigned long tstate = regs->tstate;
+	u32 insn;
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "illegal instruction", regs,
+		       0, 0x10, SIGILL) == NOTIFY_STOP)
+		return;
+
+	if (tstate & TSTATE_PRIV)
+		die_if_kernel("Kernel illegal instruction", regs);
+	if (test_thread_flag(TIF_32BIT))
+		pc = (u32)pc;
+	if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
+		if ((insn & 0xc1ffc000) == 0x81700000) /* POPC */ {
+			if (handle_popc(insn, regs))
+				return;
+		} else if ((insn & 0xc1580000) == 0xc1100000) /* LDQ/STQ */ {
+			if (handle_ldf_stq(insn, regs))
+				return;
+		} else if (tlb_type == hypervisor) {
+			if ((insn & VIS_OPCODE_MASK) == VIS_OPCODE_VAL) {
+				if (!vis_emul(regs, insn))
+					return;
+			} else {
+				struct fpustate *f = FPUSTATE;
+
+				/* XXX maybe verify XFSR bits like
+				 * XXX do_fpother() does?
+				 */
+				if (do_mathemu(regs, f))
+					return;
+			}
+		}
+	}
+	info.si_signo = SIGILL;
+	info.si_errno = 0;
+	info.si_code = ILL_ILLOPC;
+	info.si_addr = (void __user *)pc;
+	info.si_trapno = 0;
+	force_sig_info(SIGILL, &info, current);
+}
+
+extern void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn);
+
+void mem_address_unaligned(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "memory address unaligned", regs,
+		       0, 0x34, SIGSEGV) == NOTIFY_STOP)
+		return;
+
+	if (regs->tstate & TSTATE_PRIV) {
+		kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc));
+		return;
+	}
+	info.si_signo = SIGBUS;
+	info.si_errno = 0;
+	info.si_code = BUS_ADRALN;
+	info.si_addr = (void __user *)sfar;
+	info.si_trapno = 0;
+	force_sig_info(SIGBUS, &info, current);
+}
+
+void sun4v_do_mna(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "memory address unaligned", regs,
+		       0, 0x34, SIGSEGV) == NOTIFY_STOP)
+		return;
+
+	if (regs->tstate & TSTATE_PRIV) {
+		kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc));
+		return;
+	}
+	info.si_signo = SIGBUS;
+	info.si_errno = 0;
+	info.si_code = BUS_ADRALN;
+	info.si_addr = (void __user *) addr;
+	info.si_trapno = 0;
+	force_sig_info(SIGBUS, &info, current);
+}
+
+void do_privop(struct pt_regs *regs)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, "privileged operation", regs,
+		       0, 0x11, SIGILL) == NOTIFY_STOP)
+		return;
+
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+	info.si_signo = SIGILL;
+	info.si_errno = 0;
+	info.si_code = ILL_PRVOPC;
+	info.si_addr = (void __user *)regs->tpc;
+	info.si_trapno = 0;
+	force_sig_info(SIGILL, &info, current);
+}
+
+void do_privact(struct pt_regs *regs)
+{
+	do_privop(regs);
+}
+
+/* Trap level 1 stuff or other traps we should never see... */
+void do_cee(struct pt_regs *regs)
+{
+	die_if_kernel("TL0: Cache Error Exception", regs);
+}
+
+void do_cee_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: Cache Error Exception", regs);
+}
+
+void do_dae_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: Data Access Exception", regs);
+}
+
+void do_iae_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: Instruction Access Exception", regs);
+}
+
+void do_div0_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: DIV0 Exception", regs);
+}
+
+void do_fpdis_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: FPU Disabled", regs);
+}
+
+void do_fpieee_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: FPU IEEE Exception", regs);
+}
+
+void do_fpother_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: FPU Other Exception", regs);
+}
+
+void do_ill_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: Illegal Instruction Exception", regs);
+}
+
+void do_irq_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: IRQ Exception", regs);
+}
+
+void do_lddfmna_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: LDDF Exception", regs);
+}
+
+void do_stdfmna_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: STDF Exception", regs);
+}
+
+void do_paw(struct pt_regs *regs)
+{
+	die_if_kernel("TL0: Phys Watchpoint Exception", regs);
+}
+
+void do_paw_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: Phys Watchpoint Exception", regs);
+}
+
+void do_vaw(struct pt_regs *regs)
+{
+	die_if_kernel("TL0: Virt Watchpoint Exception", regs);
+}
+
+void do_vaw_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: Virt Watchpoint Exception", regs);
+}
+
+void do_tof_tl1(struct pt_regs *regs)
+{
+	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
+	die_if_kernel("TL1: Tag Overflow Exception", regs);
+}
+
+void do_getpsr(struct pt_regs *regs)
+{
+	regs->u_regs[UREG_I0] = tstate_to_psr(regs->tstate);
+	regs->tpc   = regs->tnpc;
+	regs->tnpc += 4;
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+}
+
+struct trap_per_cpu trap_block[NR_CPUS];
+
+/* This can get invoked before sched_init() so play it super safe
+ * and use hard_smp_processor_id().
+ */
+void notrace init_cur_cpu_trap(struct thread_info *t)
+{
+	int cpu = hard_smp_processor_id();
+	struct trap_per_cpu *p = &trap_block[cpu];
+
+	p->thread = t;
+	p->pgd_paddr = 0;
+}
+
+extern void thread_info_offsets_are_bolixed_dave(void);
+extern void trap_per_cpu_offsets_are_bolixed_dave(void);
+extern void tsb_config_offsets_are_bolixed_dave(void);
+
+/* Only invoked on boot processor. */
+void __init trap_init(void)
+{
+	/* Compile time sanity check. */
+	if (TI_TASK != offsetof(struct thread_info, task) ||
+	    TI_FLAGS != offsetof(struct thread_info, flags) ||
+	    TI_CPU != offsetof(struct thread_info, cpu) ||
+	    TI_FPSAVED != offsetof(struct thread_info, fpsaved) ||
+	    TI_KSP != offsetof(struct thread_info, ksp) ||
+	    TI_FAULT_ADDR != offsetof(struct thread_info, fault_address) ||
+	    TI_KREGS != offsetof(struct thread_info, kregs) ||
+	    TI_UTRAPS != offsetof(struct thread_info, utraps) ||
+	    TI_EXEC_DOMAIN != offsetof(struct thread_info, exec_domain) ||
+	    TI_REG_WINDOW != offsetof(struct thread_info, reg_window) ||
+	    TI_RWIN_SPTRS != offsetof(struct thread_info, rwbuf_stkptrs) ||
+	    TI_GSR != offsetof(struct thread_info, gsr) ||
+	    TI_XFSR != offsetof(struct thread_info, xfsr) ||
+	    TI_USER_CNTD0 != offsetof(struct thread_info, user_cntd0) ||
+	    TI_USER_CNTD1 != offsetof(struct thread_info, user_cntd1) ||
+	    TI_KERN_CNTD0 != offsetof(struct thread_info, kernel_cntd0) ||
+	    TI_KERN_CNTD1 != offsetof(struct thread_info, kernel_cntd1) ||
+	    TI_PCR != offsetof(struct thread_info, pcr_reg) ||
+	    TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) ||
+	    TI_NEW_CHILD != offsetof(struct thread_info, new_child) ||
+	    TI_SYS_NOERROR != offsetof(struct thread_info, syscall_noerror) ||
+	    TI_RESTART_BLOCK != offsetof(struct thread_info, restart_block) ||
+	    TI_KUNA_REGS != offsetof(struct thread_info, kern_una_regs) ||
+	    TI_KUNA_INSN != offsetof(struct thread_info, kern_una_insn) ||
+	    TI_FPREGS != offsetof(struct thread_info, fpregs) ||
+	    (TI_FPREGS & (64 - 1)))
+		thread_info_offsets_are_bolixed_dave();
+
+	if (TRAP_PER_CPU_THREAD != offsetof(struct trap_per_cpu, thread) ||
+	    (TRAP_PER_CPU_PGD_PADDR !=
+	     offsetof(struct trap_per_cpu, pgd_paddr)) ||
+	    (TRAP_PER_CPU_CPU_MONDO_PA !=
+	     offsetof(struct trap_per_cpu, cpu_mondo_pa)) ||
+	    (TRAP_PER_CPU_DEV_MONDO_PA !=
+	     offsetof(struct trap_per_cpu, dev_mondo_pa)) ||
+	    (TRAP_PER_CPU_RESUM_MONDO_PA !=
+	     offsetof(struct trap_per_cpu, resum_mondo_pa)) ||
+	    (TRAP_PER_CPU_RESUM_KBUF_PA !=
+	     offsetof(struct trap_per_cpu, resum_kernel_buf_pa)) ||
+	    (TRAP_PER_CPU_NONRESUM_MONDO_PA !=
+	     offsetof(struct trap_per_cpu, nonresum_mondo_pa)) ||
+	    (TRAP_PER_CPU_NONRESUM_KBUF_PA !=
+	     offsetof(struct trap_per_cpu, nonresum_kernel_buf_pa)) ||
+	    (TRAP_PER_CPU_FAULT_INFO !=
+	     offsetof(struct trap_per_cpu, fault_info)) ||
+	    (TRAP_PER_CPU_CPU_MONDO_BLOCK_PA !=
+	     offsetof(struct trap_per_cpu, cpu_mondo_block_pa)) ||
+	    (TRAP_PER_CPU_CPU_LIST_PA !=
+	     offsetof(struct trap_per_cpu, cpu_list_pa)) ||
+	    (TRAP_PER_CPU_TSB_HUGE !=
+	     offsetof(struct trap_per_cpu, tsb_huge)) ||
+	    (TRAP_PER_CPU_TSB_HUGE_TEMP !=
+	     offsetof(struct trap_per_cpu, tsb_huge_temp)) ||
+	    (TRAP_PER_CPU_IRQ_WORKLIST_PA !=
+	     offsetof(struct trap_per_cpu, irq_worklist_pa)) ||
+	    (TRAP_PER_CPU_CPU_MONDO_QMASK !=
+	     offsetof(struct trap_per_cpu, cpu_mondo_qmask)) ||
+	    (TRAP_PER_CPU_DEV_MONDO_QMASK !=
+	     offsetof(struct trap_per_cpu, dev_mondo_qmask)) ||
+	    (TRAP_PER_CPU_RESUM_QMASK !=
+	     offsetof(struct trap_per_cpu, resum_qmask)) ||
+	    (TRAP_PER_CPU_NONRESUM_QMASK !=
+	     offsetof(struct trap_per_cpu, nonresum_qmask)))
+		trap_per_cpu_offsets_are_bolixed_dave();
+
+	if ((TSB_CONFIG_TSB !=
+	     offsetof(struct tsb_config, tsb)) ||
+	    (TSB_CONFIG_RSS_LIMIT !=
+	     offsetof(struct tsb_config, tsb_rss_limit)) ||
+	    (TSB_CONFIG_NENTRIES !=
+	     offsetof(struct tsb_config, tsb_nentries)) ||
+	    (TSB_CONFIG_REG_VAL !=
+	     offsetof(struct tsb_config, tsb_reg_val)) ||
+	    (TSB_CONFIG_MAP_VADDR !=
+	     offsetof(struct tsb_config, tsb_map_vaddr)) ||
+	    (TSB_CONFIG_MAP_PTE !=
+	     offsetof(struct tsb_config, tsb_map_pte)))
+		tsb_config_offsets_are_bolixed_dave();
+
+	/* Attach to the address space of init_task.  On SMP we
+	 * do this in smp.c:smp_callin for other cpus.
+	 */
+	atomic_inc(&init_mm.mm_count);
+	current->active_mm = &init_mm;
+}
diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S
new file mode 100644
index 000000000000..8c91d9b29a2f
--- /dev/null
+++ b/arch/sparc/kernel/tsb.S
@@ -0,0 +1,552 @@
+/* tsb.S: Sparc64 TSB table handling.
+ *
+ * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
+ */
+
+
+#include <asm/tsb.h>
+#include <asm/hypervisor.h>
+#include <asm/page.h>
+#include <asm/cpudata.h>
+#include <asm/mmu.h>
+
+	.text
+	.align	32
+
+	/* Invoked from TLB miss handler, we are in the
+	 * MMU global registers and they are setup like
+	 * this:
+	 *
+	 * %g1: TSB entry pointer
+	 * %g2:	available temporary
+	 * %g3:	FAULT_CODE_{D,I}TLB
+	 * %g4:	available temporary
+	 * %g5:	available temporary
+	 * %g6: TAG TARGET
+	 * %g7:	available temporary, will be loaded by us with
+	 *      the physical address base of the linux page
+	 *      tables for the current address space
+	 */
+tsb_miss_dtlb:
+	mov		TLB_TAG_ACCESS, %g4
+	ba,pt		%xcc, tsb_miss_page_table_walk
+	 ldxa		[%g4] ASI_DMMU, %g4
+
+tsb_miss_itlb:
+	mov		TLB_TAG_ACCESS, %g4
+	ba,pt		%xcc, tsb_miss_page_table_walk
+	 ldxa		[%g4] ASI_IMMU, %g4
+
+	/* At this point we have:
+	 * %g1 --	PAGE_SIZE TSB entry address
+	 * %g3 --	FAULT_CODE_{D,I}TLB
+	 * %g4 --	missing virtual address
+	 * %g6 --	TAG TARGET (vaddr >> 22)
+	 */
+tsb_miss_page_table_walk:
+	TRAP_LOAD_TRAP_BLOCK(%g7, %g5)
+
+	/* Before committing to a full page table walk,
+	 * check the huge page TSB.
+	 */
+#ifdef CONFIG_HUGETLB_PAGE
+
+661:	ldx		[%g7 + TRAP_PER_CPU_TSB_HUGE], %g5
+	nop
+	.section	.sun4v_2insn_patch, "ax"
+	.word		661b
+	mov		SCRATCHPAD_UTSBREG2, %g5
+	ldxa		[%g5] ASI_SCRATCHPAD, %g5
+	.previous
+
+	cmp		%g5, -1
+	be,pt		%xcc, 80f
+	 nop
+
+	/* We need an aligned pair of registers containing 2 values
+	 * which can be easily rematerialized.  %g6 and %g7 foot the
+	 * bill just nicely.  We'll save %g6 away into %g2 for the
+	 * huge page TSB TAG comparison.
+	 *
+	 * Perform a huge page TSB lookup.
+	 */
+	mov		%g6, %g2
+	and		%g5, 0x7, %g6
+	mov		512, %g7
+	andn		%g5, 0x7, %g5
+	sllx		%g7, %g6, %g7
+	srlx		%g4, HPAGE_SHIFT, %g6
+	sub		%g7, 1, %g7
+	and		%g6, %g7, %g6
+	sllx		%g6, 4, %g6
+	add		%g5, %g6, %g5
+
+	TSB_LOAD_QUAD(%g5, %g6)
+	cmp		%g6, %g2
+	be,a,pt		%xcc, tsb_tlb_reload
+	 mov		%g7, %g5
+
+	/* No match, remember the huge page TSB entry address,
+	 * and restore %g6 and %g7.
+	 */
+	TRAP_LOAD_TRAP_BLOCK(%g7, %g6)
+	srlx		%g4, 22, %g6
+80:	stx		%g5, [%g7 + TRAP_PER_CPU_TSB_HUGE_TEMP]
+
+#endif
+
+	ldx		[%g7 + TRAP_PER_CPU_PGD_PADDR], %g7
+
+	/* At this point we have:
+	 * %g1 --	TSB entry address
+	 * %g3 --	FAULT_CODE_{D,I}TLB
+	 * %g4 --	missing virtual address
+	 * %g6 --	TAG TARGET (vaddr >> 22)
+	 * %g7 --	page table physical address
+	 *
+	 * We know that both the base PAGE_SIZE TSB and the HPAGE_SIZE
+	 * TSB both lack a matching entry.
+	 */
+tsb_miss_page_table_walk_sun4v_fastpath:
+	USER_PGTABLE_WALK_TL1(%g4, %g7, %g5, %g2, tsb_do_fault)
+
+	/* Load and check PTE.  */
+	ldxa		[%g5] ASI_PHYS_USE_EC, %g5
+	brgez,pn	%g5, tsb_do_fault
+	 nop
+
+#ifdef CONFIG_HUGETLB_PAGE
+661:	sethi		%uhi(_PAGE_SZALL_4U), %g7
+	sllx		%g7, 32, %g7
+	.section	.sun4v_2insn_patch, "ax"
+	.word		661b
+	mov		_PAGE_SZALL_4V, %g7
+	nop
+	.previous
+
+	and		%g5, %g7, %g2
+
+661:	sethi		%uhi(_PAGE_SZHUGE_4U), %g7
+	sllx		%g7, 32, %g7
+	.section	.sun4v_2insn_patch, "ax"
+	.word		661b
+	mov		_PAGE_SZHUGE_4V, %g7
+	nop
+	.previous
+
+	cmp		%g2, %g7
+	bne,pt		%xcc, 60f
+	 nop
+
+	/* It is a huge page, use huge page TSB entry address we
+	 * calculated above.
+	 */
+	TRAP_LOAD_TRAP_BLOCK(%g7, %g2)
+	ldx		[%g7 + TRAP_PER_CPU_TSB_HUGE_TEMP], %g2
+	cmp		%g2, -1
+	movne		%xcc, %g2, %g1
+60:
+#endif
+
+	/* At this point we have:
+	 * %g1 --	TSB entry address
+	 * %g3 --	FAULT_CODE_{D,I}TLB
+	 * %g5 --	valid PTE
+	 * %g6 --	TAG TARGET (vaddr >> 22)
+	 */
+tsb_reload:
+	TSB_LOCK_TAG(%g1, %g2, %g7)
+	TSB_WRITE(%g1, %g5, %g6)
+
+	/* Finally, load TLB and return from trap.  */
+tsb_tlb_reload:
+	cmp		%g3, FAULT_CODE_DTLB
+	bne,pn		%xcc, tsb_itlb_load
+	 nop
+
+tsb_dtlb_load:
+
+661:	stxa		%g5, [%g0] ASI_DTLB_DATA_IN
+	retry
+	.section	.sun4v_2insn_patch, "ax"
+	.word		661b
+	nop
+	nop
+	.previous
+
+	/* For sun4v the ASI_DTLB_DATA_IN store and the retry
+	 * instruction get nop'd out and we get here to branch
+	 * to the sun4v tlb load code.  The registers are setup
+	 * as follows:
+	 *
+	 * %g4: vaddr
+	 * %g5: PTE
+	 * %g6:	TAG
+	 *
+	 * The sun4v TLB load wants the PTE in %g3 so we fix that
+	 * up here.
+	 */
+	ba,pt		%xcc, sun4v_dtlb_load
+	 mov		%g5, %g3
+
+tsb_itlb_load:
+	/* Executable bit must be set.  */
+661:	andcc		%g5, _PAGE_EXEC_4U, %g0
+	.section	.sun4v_1insn_patch, "ax"
+	.word		661b
+	andcc		%g5, _PAGE_EXEC_4V, %g0
+	.previous
+
+	be,pn		%xcc, tsb_do_fault
+	 nop
+
+661:	stxa		%g5, [%g0] ASI_ITLB_DATA_IN
+	retry
+	.section	.sun4v_2insn_patch, "ax"
+	.word		661b
+	nop
+	nop
+	.previous
+
+	/* For sun4v the ASI_ITLB_DATA_IN store and the retry
+	 * instruction get nop'd out and we get here to branch
+	 * to the sun4v tlb load code.  The registers are setup
+	 * as follows:
+	 *
+	 * %g4: vaddr
+	 * %g5: PTE
+	 * %g6:	TAG
+	 *
+	 * The sun4v TLB load wants the PTE in %g3 so we fix that
+	 * up here.
+	 */
+	ba,pt		%xcc, sun4v_itlb_load
+	 mov		%g5, %g3
+
+	/* No valid entry in the page tables, do full fault
+	 * processing.
+	 */
+
+	.globl		tsb_do_fault
+tsb_do_fault:
+	cmp		%g3, FAULT_CODE_DTLB
+
+661:	rdpr		%pstate, %g5
+	wrpr		%g5, PSTATE_AG | PSTATE_MG, %pstate
+	.section	.sun4v_2insn_patch, "ax"
+	.word		661b
+	SET_GL(1)
+	ldxa		[%g0] ASI_SCRATCHPAD, %g4
+	.previous
+
+	bne,pn		%xcc, tsb_do_itlb_fault
+	 nop
+
+tsb_do_dtlb_fault:
+	rdpr	%tl, %g3
+	cmp	%g3, 1
+
+661:	mov	TLB_TAG_ACCESS, %g4
+	ldxa	[%g4] ASI_DMMU, %g5
+	.section .sun4v_2insn_patch, "ax"
+	.word	661b
+	ldx	[%g4 + HV_FAULT_D_ADDR_OFFSET], %g5
+	nop
+	.previous
+
+	be,pt	%xcc, sparc64_realfault_common
+	 mov	FAULT_CODE_DTLB, %g4
+	ba,pt	%xcc, winfix_trampoline
+	 nop
+
+tsb_do_itlb_fault:
+	rdpr	%tpc, %g5
+	ba,pt	%xcc, sparc64_realfault_common
+	 mov	FAULT_CODE_ITLB, %g4
+
+	.globl	sparc64_realfault_common
+sparc64_realfault_common:
+	/* fault code in %g4, fault address in %g5, etrap will
+	 * preserve these two values in %l4 and %l5 respectively
+	 */
+	ba,pt	%xcc, etrap			! Save trap state
+1:	 rd	%pc, %g7			! ...
+	stb	%l4, [%g6 + TI_FAULT_CODE]	! Save fault code
+	stx	%l5, [%g6 + TI_FAULT_ADDR]	! Save fault address
+	call	do_sparc64_fault		! Call fault handler
+	 add	%sp, PTREGS_OFF, %o0		! Compute pt_regs arg
+	ba,pt	%xcc, rtrap			! Restore cpu state
+	 nop					! Delay slot (fill me)
+
+winfix_trampoline:
+	rdpr	%tpc, %g3			! Prepare winfixup TNPC
+	or	%g3, 0x7c, %g3			! Compute branch offset
+	wrpr	%g3, %tnpc			! Write it into TNPC
+	done					! Trap return
+
+	/* Insert an entry into the TSB.
+	 *
+	 * %o0: TSB entry pointer (virt or phys address)
+	 * %o1: tag
+	 * %o2:	pte
+	 */
+	.align	32
+	.globl	__tsb_insert
+__tsb_insert:
+	rdpr	%pstate, %o5
+	wrpr	%o5, PSTATE_IE, %pstate
+	TSB_LOCK_TAG(%o0, %g2, %g3)
+	TSB_WRITE(%o0, %o2, %o1)
+	wrpr	%o5, %pstate
+	retl
+	 nop
+	.size	__tsb_insert, .-__tsb_insert
+
+	/* Flush the given TSB entry if it has the matching
+	 * tag.
+	 *
+	 * %o0: TSB entry pointer (virt or phys address)
+	 * %o1:	tag
+	 */
+	.align	32
+	.globl	tsb_flush
+	.type	tsb_flush,#function
+tsb_flush:
+	sethi	%hi(TSB_TAG_LOCK_HIGH), %g2
+1:	TSB_LOAD_TAG(%o0, %g1)
+	srlx	%g1, 32, %o3
+	andcc	%o3, %g2, %g0
+	bne,pn	%icc, 1b
+	 nop
+	cmp	%g1, %o1
+	mov	1, %o3
+	bne,pt	%xcc, 2f
+	 sllx	%o3, TSB_TAG_INVALID_BIT, %o3
+	TSB_CAS_TAG(%o0, %g1, %o3)
+	cmp	%g1, %o3
+	bne,pn	%xcc, 1b
+	 nop
+2:	retl
+	 nop
+	.size	tsb_flush, .-tsb_flush
+
+	/* Reload MMU related context switch state at
+	 * schedule() time.
+	 *
+	 * %o0: page table physical address
+	 * %o1:	TSB base config pointer
+	 * %o2:	TSB huge config pointer, or NULL if none
+	 * %o3:	Hypervisor TSB descriptor physical address
+	 *
+	 * We have to run this whole thing with interrupts
+	 * disabled so that the current cpu doesn't change
+	 * due to preemption.
+	 */
+	.align	32
+	.globl	__tsb_context_switch
+	.type	__tsb_context_switch,#function
+__tsb_context_switch:
+	rdpr	%pstate, %g1
+	wrpr	%g1, PSTATE_IE, %pstate
+
+	TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
+
+	stx	%o0, [%g2 + TRAP_PER_CPU_PGD_PADDR]
+
+	ldx	[%o1 + TSB_CONFIG_REG_VAL], %o0
+	brz,pt	%o2, 1f
+	 mov	-1, %g3
+
+	ldx	[%o2 + TSB_CONFIG_REG_VAL], %g3
+
+1:	stx	%g3, [%g2 + TRAP_PER_CPU_TSB_HUGE]
+
+	sethi	%hi(tlb_type), %g2
+	lduw	[%g2 + %lo(tlb_type)], %g2
+	cmp	%g2, 3
+	bne,pt	%icc, 50f
+	 nop
+
+	/* Hypervisor TSB switch. */
+	mov	SCRATCHPAD_UTSBREG1, %o5
+	stxa	%o0, [%o5] ASI_SCRATCHPAD
+	mov	SCRATCHPAD_UTSBREG2, %o5
+	stxa	%g3, [%o5] ASI_SCRATCHPAD
+
+	mov	2, %o0
+	cmp	%g3, -1
+	move	%xcc, 1, %o0
+
+	mov	HV_FAST_MMU_TSB_CTXNON0, %o5
+	mov	%o3, %o1
+	ta	HV_FAST_TRAP
+
+	/* Finish up.  */
+	ba,pt	%xcc, 9f
+	 nop
+
+	/* SUN4U TSB switch.  */
+50:	mov	TSB_REG, %o5
+	stxa	%o0, [%o5] ASI_DMMU
+	membar	#Sync
+	stxa	%o0, [%o5] ASI_IMMU
+	membar	#Sync
+
+2:	ldx	[%o1 + TSB_CONFIG_MAP_VADDR], %o4
+	brz	%o4, 9f
+	 ldx	[%o1 + TSB_CONFIG_MAP_PTE], %o5
+
+	sethi	%hi(sparc64_highest_unlocked_tlb_ent), %g2
+	mov	TLB_TAG_ACCESS, %g3
+	lduw	[%g2 + %lo(sparc64_highest_unlocked_tlb_ent)], %g2
+	stxa	%o4, [%g3] ASI_DMMU
+	membar	#Sync
+	sllx	%g2, 3, %g2
+	stxa	%o5, [%g2] ASI_DTLB_DATA_ACCESS
+	membar	#Sync
+
+	brz,pt	%o2, 9f
+	 nop
+
+	ldx	[%o2 + TSB_CONFIG_MAP_VADDR], %o4
+	ldx	[%o2 + TSB_CONFIG_MAP_PTE], %o5
+	mov	TLB_TAG_ACCESS, %g3
+	stxa	%o4, [%g3] ASI_DMMU
+	membar	#Sync
+	sub	%g2, (1 << 3), %g2
+	stxa	%o5, [%g2] ASI_DTLB_DATA_ACCESS
+	membar	#Sync
+
+9:
+	wrpr	%g1, %pstate
+
+	retl
+	 nop
+	.size	__tsb_context_switch, .-__tsb_context_switch
+
+#define TSB_PASS_BITS	((1 << TSB_TAG_LOCK_BIT) | \
+			 (1 << TSB_TAG_INVALID_BIT))
+
+	.align	32
+	.globl	copy_tsb
+	.type	copy_tsb,#function
+copy_tsb:		/* %o0=old_tsb_base, %o1=old_tsb_size
+			 * %o2=new_tsb_base, %o3=new_tsb_size
+			 */
+	sethi		%uhi(TSB_PASS_BITS), %g7
+	srlx		%o3, 4, %o3
+	add		%o0, %o1, %g1	/* end of old tsb */
+	sllx		%g7, 32, %g7
+	sub		%o3, 1, %o3	/* %o3 == new tsb hash mask */
+
+661:	prefetcha	[%o0] ASI_N, #one_read
+	.section	.tsb_phys_patch, "ax"
+	.word		661b
+	prefetcha	[%o0] ASI_PHYS_USE_EC, #one_read
+	.previous
+
+90:	andcc		%o0, (64 - 1), %g0
+	bne		1f
+	 add		%o0, 64, %o5
+
+661:	prefetcha	[%o5] ASI_N, #one_read
+	.section	.tsb_phys_patch, "ax"
+	.word		661b
+	prefetcha	[%o5] ASI_PHYS_USE_EC, #one_read
+	.previous
+
+1:	TSB_LOAD_QUAD(%o0, %g2)		/* %g2/%g3 == TSB entry */
+	andcc		%g2, %g7, %g0	/* LOCK or INVALID set? */
+	bne,pn		%xcc, 80f	/* Skip it */
+	 sllx		%g2, 22, %o4	/* TAG --> VADDR */
+
+	/* This can definitely be computed faster... */
+	srlx		%o0, 4, %o5	/* Build index */
+	and		%o5, 511, %o5	/* Mask index */
+	sllx		%o5, PAGE_SHIFT, %o5 /* Put into vaddr position */
+	or		%o4, %o5, %o4	/* Full VADDR. */
+	srlx		%o4, PAGE_SHIFT, %o4 /* Shift down to create index */
+	and		%o4, %o3, %o4	/* Mask with new_tsb_nents-1 */
+	sllx		%o4, 4, %o4	/* Shift back up into tsb ent offset */
+	TSB_STORE(%o2 + %o4, %g2)	/* Store TAG */
+	add		%o4, 0x8, %o4	/* Advance to TTE */
+	TSB_STORE(%o2 + %o4, %g3)	/* Store TTE */
+
+80:	add		%o0, 16, %o0
+	cmp		%o0, %g1
+	bne,pt		%xcc, 90b
+	 nop
+
+	retl
+	 nop
+	.size		copy_tsb, .-copy_tsb
+
+	/* Set the invalid bit in all TSB entries.  */
+	.align		32
+	.globl		tsb_init
+	.type		tsb_init,#function
+tsb_init:		/* %o0 = TSB vaddr, %o1 = size in bytes */
+	prefetch	[%o0 + 0x000], #n_writes
+	mov		1, %g1
+	prefetch	[%o0 + 0x040], #n_writes
+	sllx		%g1, TSB_TAG_INVALID_BIT, %g1
+	prefetch	[%o0 + 0x080], #n_writes
+1:	prefetch	[%o0 + 0x0c0], #n_writes
+	stx		%g1, [%o0 + 0x00]
+	stx		%g1, [%o0 + 0x10]
+	stx		%g1, [%o0 + 0x20]
+	stx		%g1, [%o0 + 0x30]
+	prefetch	[%o0 + 0x100], #n_writes
+	stx		%g1, [%o0 + 0x40]
+	stx		%g1, [%o0 + 0x50]
+	stx		%g1, [%o0 + 0x60]
+	stx		%g1, [%o0 + 0x70]
+	prefetch	[%o0 + 0x140], #n_writes
+	stx		%g1, [%o0 + 0x80]
+	stx		%g1, [%o0 + 0x90]
+	stx		%g1, [%o0 + 0xa0]
+	stx		%g1, [%o0 + 0xb0]
+	prefetch	[%o0 + 0x180], #n_writes
+	stx		%g1, [%o0 + 0xc0]
+	stx		%g1, [%o0 + 0xd0]
+	stx		%g1, [%o0 + 0xe0]
+	stx		%g1, [%o0 + 0xf0]
+	subcc		%o1, 0x100, %o1
+	bne,pt		%xcc, 1b
+	 add		%o0, 0x100, %o0
+	retl
+	 nop
+	nop
+	nop
+	.size		tsb_init, .-tsb_init
+
+	.globl		NGtsb_init
+	.type		NGtsb_init,#function
+NGtsb_init:
+	rd		%asi, %g2
+	mov		1, %g1
+	wr		%g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
+	sllx		%g1, TSB_TAG_INVALID_BIT, %g1
+1:	stxa		%g1, [%o0 + 0x00] %asi
+	stxa		%g1, [%o0 + 0x10] %asi
+	stxa		%g1, [%o0 + 0x20] %asi
+	stxa		%g1, [%o0 + 0x30] %asi
+	stxa		%g1, [%o0 + 0x40] %asi
+	stxa		%g1, [%o0 + 0x50] %asi
+	stxa		%g1, [%o0 + 0x60] %asi
+	stxa		%g1, [%o0 + 0x70] %asi
+	stxa		%g1, [%o0 + 0x80] %asi
+	stxa		%g1, [%o0 + 0x90] %asi
+	stxa		%g1, [%o0 + 0xa0] %asi
+	stxa		%g1, [%o0 + 0xb0] %asi
+	stxa		%g1, [%o0 + 0xc0] %asi
+	stxa		%g1, [%o0 + 0xd0] %asi
+	stxa		%g1, [%o0 + 0xe0] %asi
+	stxa		%g1, [%o0 + 0xf0] %asi
+	subcc		%o1, 0x100, %o1
+	bne,pt		%xcc, 1b
+	 add		%o0, 0x100, %o0
+	membar		#Sync
+	retl
+	 wr		%g2, 0x0, %asi
+	.size		NGtsb_init, .-NGtsb_init
diff --git a/arch/sparc/kernel/ttable.S b/arch/sparc/kernel/ttable.S
new file mode 100644
index 000000000000..ea925503b42e
--- /dev/null
+++ b/arch/sparc/kernel/ttable.S
@@ -0,0 +1,266 @@
+/* ttable.S: Sparc V9 Trap Table(s) with SpitFire/Cheetah/SUN4V extensions.
+ *
+ * Copyright (C) 1996, 2001, 2006 David S. Miller (davem@davemloft.net)
+ */
+
+
+	.globl	sparc64_ttable_tl0, sparc64_ttable_tl1
+	.globl	tl0_icpe, tl1_icpe
+	.globl	tl0_dcpe, tl1_dcpe
+	.globl	tl0_fecc, tl1_fecc
+	.globl	tl0_cee, tl1_cee
+	.globl	tl0_iae, tl1_iae
+	.globl	tl0_dae, tl1_dae
+
+sparc64_ttable_tl0:
+tl0_resv000:	BOOT_KERNEL BTRAP(0x1) BTRAP(0x2) BTRAP(0x3)
+tl0_resv004:	BTRAP(0x4)  BTRAP(0x5) BTRAP(0x6) BTRAP(0x7)
+tl0_iax:	membar #Sync
+		TRAP_NOSAVE_7INSNS(__spitfire_insn_access_exception)
+tl0_itsb_4v:	SUN4V_ITSB_MISS
+tl0_iae:	membar #Sync
+		TRAP_NOSAVE_7INSNS(__spitfire_access_error)
+tl0_resv00b:	BTRAP(0xb) BTRAP(0xc) BTRAP(0xd) BTRAP(0xe) BTRAP(0xf)
+tl0_ill:	membar #Sync
+		TRAP_7INSNS(do_illegal_instruction)
+tl0_privop:	TRAP(do_privop)
+tl0_resv012:	BTRAP(0x12) BTRAP(0x13) BTRAP(0x14) BTRAP(0x15) BTRAP(0x16) BTRAP(0x17)
+tl0_resv018:	BTRAP(0x18) BTRAP(0x19) BTRAP(0x1a) BTRAP(0x1b) BTRAP(0x1c) BTRAP(0x1d)
+tl0_resv01e:	BTRAP(0x1e) BTRAP(0x1f)
+tl0_fpdis:	TRAP_NOSAVE(do_fpdis)
+tl0_fpieee:	TRAP_SAVEFPU(do_fpieee)
+tl0_fpother:	TRAP_NOSAVE(do_fpother_check_fitos)
+tl0_tof:	TRAP(do_tof)
+tl0_cwin:	CLEAN_WINDOW
+tl0_div0:	TRAP(do_div0)
+tl0_resv029:	BTRAP(0x29) BTRAP(0x2a) BTRAP(0x2b) BTRAP(0x2c) BTRAP(0x2d) BTRAP(0x2e)
+tl0_resv02f:	BTRAP(0x2f)
+tl0_dax:	TRAP_NOSAVE(__spitfire_data_access_exception)
+tl0_dtsb_4v:	SUN4V_DTSB_MISS
+tl0_dae:	membar #Sync
+		TRAP_NOSAVE_7INSNS(__spitfire_access_error)
+tl0_resv033:	BTRAP(0x33)
+tl0_mna:	TRAP_NOSAVE(do_mna)
+tl0_lddfmna:	TRAP_NOSAVE(do_lddfmna)
+tl0_stdfmna:	TRAP_NOSAVE(do_stdfmna)
+tl0_privact:	TRAP_NOSAVE(__do_privact)
+tl0_resv038:	BTRAP(0x38) BTRAP(0x39) BTRAP(0x3a) BTRAP(0x3b) BTRAP(0x3c) BTRAP(0x3d)
+tl0_resv03e:	BTRAP(0x3e) BTRAP(0x3f) BTRAP(0x40)
+#ifdef CONFIG_SMP
+tl0_irq1:	TRAP_IRQ(smp_call_function_client, 1)
+tl0_irq2:	TRAP_IRQ(smp_receive_signal_client, 2)
+tl0_irq3:	TRAP_IRQ(smp_penguin_jailcell, 3)
+tl0_irq4:	TRAP_IRQ(smp_new_mmu_context_version_client, 4)
+#else
+tl0_irq1:	BTRAP(0x41)
+tl0_irq2:	BTRAP(0x42)
+tl0_irq3:	BTRAP(0x43)
+tl0_irq4:	BTRAP(0x44)
+#endif
+tl0_irq5:	TRAP_IRQ(handler_irq, 5)
+#ifdef CONFIG_SMP
+tl0_irq6:	TRAP_IRQ(smp_call_function_single_client, 6)
+#else
+tl0_irq6:	BTRAP(0x46)
+#endif
+tl0_irq7:	BTRAP(0x47) BTRAP(0x48) BTRAP(0x49)
+tl0_irq10:	BTRAP(0x4a) BTRAP(0x4b) BTRAP(0x4c) BTRAP(0x4d)
+tl0_irq14:	TRAP_IRQ(timer_interrupt, 14)
+tl0_irq15:	TRAP_NMI_IRQ(perfctr_irq, 15)
+tl0_resv050:	BTRAP(0x50) BTRAP(0x51) BTRAP(0x52) BTRAP(0x53) BTRAP(0x54) BTRAP(0x55)
+tl0_resv056:	BTRAP(0x56) BTRAP(0x57) BTRAP(0x58) BTRAP(0x59) BTRAP(0x5a) BTRAP(0x5b)
+tl0_resv05c:	BTRAP(0x5c) BTRAP(0x5d) BTRAP(0x5e) BTRAP(0x5f)
+tl0_ivec:	TRAP_IVEC
+tl0_paw:	TRAP(do_paw)
+tl0_vaw:	TRAP(do_vaw)
+tl0_cee:	membar #Sync
+		TRAP_NOSAVE_7INSNS(__spitfire_cee_trap)
+tl0_iamiss:
+#include	"itlb_miss.S"
+tl0_damiss:
+#include	"dtlb_miss.S"
+tl0_daprot:
+#include	"dtlb_prot.S"
+tl0_fecc:	BTRAP(0x70)	/* Fast-ECC on Cheetah */
+tl0_dcpe:	BTRAP(0x71)	/* D-cache Parity Error on Cheetah+ */
+tl0_icpe:	BTRAP(0x72)	/* I-cache Parity Error on Cheetah+ */
+tl0_resv073:	BTRAP(0x73) BTRAP(0x74) BTRAP(0x75)
+tl0_resv076:	BTRAP(0x76) BTRAP(0x77) BTRAP(0x78) BTRAP(0x79) BTRAP(0x7a) BTRAP(0x7b)
+tl0_cpu_mondo:	TRAP_NOSAVE(sun4v_cpu_mondo)
+tl0_dev_mondo:	TRAP_NOSAVE(sun4v_dev_mondo)
+tl0_res_mondo:	TRAP_NOSAVE(sun4v_res_mondo)
+tl0_nres_mondo:	TRAP_NOSAVE(sun4v_nonres_mondo)
+tl0_s0n:	SPILL_0_NORMAL
+tl0_s1n:	SPILL_1_NORMAL
+tl0_s2n:	SPILL_2_NORMAL
+tl0_s3n:	SPILL_0_NORMAL_ETRAP
+tl0_s4n:	SPILL_1_GENERIC_ETRAP
+tl0_s5n:	SPILL_1_GENERIC_ETRAP_FIXUP
+tl0_s6n:	SPILL_2_GENERIC_ETRAP
+tl0_s7n:	SPILL_2_GENERIC_ETRAP_FIXUP
+tl0_s0o:	SPILL_0_OTHER
+tl0_s1o:	SPILL_1_OTHER
+tl0_s2o:	SPILL_2_OTHER
+tl0_s3o:	SPILL_3_OTHER
+tl0_s4o:	SPILL_4_OTHER
+tl0_s5o:	SPILL_5_OTHER
+tl0_s6o:	SPILL_6_OTHER
+tl0_s7o:	SPILL_7_OTHER
+tl0_f0n:	FILL_0_NORMAL
+tl0_f1n:	FILL_1_NORMAL
+tl0_f2n:	FILL_2_NORMAL
+tl0_f3n:	FILL_3_NORMAL
+tl0_f4n:	FILL_4_NORMAL
+tl0_f5n:	FILL_0_NORMAL_RTRAP
+tl0_f6n:	FILL_1_GENERIC_RTRAP
+tl0_f7n:	FILL_2_GENERIC_RTRAP
+tl0_f0o:	FILL_0_OTHER
+tl0_f1o:	FILL_1_OTHER
+tl0_f2o:	FILL_2_OTHER
+tl0_f3o:	FILL_3_OTHER
+tl0_f4o:	FILL_4_OTHER
+tl0_f5o:	FILL_5_OTHER
+tl0_f6o:	FILL_6_OTHER
+tl0_f7o:	FILL_7_OTHER
+tl0_resv100:	BTRAP(0x100)
+tl0_bkpt:	BREAKPOINT_TRAP
+tl0_divz:	TRAP(do_div0)
+tl0_flushw:	FLUSH_WINDOW_TRAP
+tl0_resv104:	BTRAP(0x104) BTRAP(0x105) BTRAP(0x106) BTRAP(0x107) BTRAP(0x108)
+tl0_resv109:	BTRAP(0x109) BTRAP(0x10a) BTRAP(0x10b) BTRAP(0x10c) BTRAP(0x10d)
+tl0_resv10e:	BTRAP(0x10e) BTRAP(0x10f)
+tl0_linux32:	LINUX_32BIT_SYSCALL_TRAP
+tl0_oldlinux64:	LINUX_64BIT_SYSCALL_TRAP
+tl0_resv112:	TRAP_UTRAP(UT_TRAP_INSTRUCTION_18,0x112) TRAP_UTRAP(UT_TRAP_INSTRUCTION_19,0x113)
+tl0_resv114:	TRAP_UTRAP(UT_TRAP_INSTRUCTION_20,0x114) TRAP_UTRAP(UT_TRAP_INSTRUCTION_21,0x115)
+tl0_resv116:	TRAP_UTRAP(UT_TRAP_INSTRUCTION_22,0x116) TRAP_UTRAP(UT_TRAP_INSTRUCTION_23,0x117)
+tl0_resv118:	TRAP_UTRAP(UT_TRAP_INSTRUCTION_24,0x118) TRAP_UTRAP(UT_TRAP_INSTRUCTION_25,0x119)
+tl0_resv11a:	TRAP_UTRAP(UT_TRAP_INSTRUCTION_26,0x11a) TRAP_UTRAP(UT_TRAP_INSTRUCTION_27,0x11b)
+tl0_resv11c:	TRAP_UTRAP(UT_TRAP_INSTRUCTION_28,0x11c) TRAP_UTRAP(UT_TRAP_INSTRUCTION_29,0x11d)
+tl0_resv11e:	TRAP_UTRAP(UT_TRAP_INSTRUCTION_30,0x11e) TRAP_UTRAP(UT_TRAP_INSTRUCTION_31,0x11f)
+tl0_getcc:	GETCC_TRAP
+tl0_setcc:	SETCC_TRAP
+tl0_getpsr:	TRAP(do_getpsr)
+tl0_resv123:	BTRAP(0x123) BTRAP(0x124) BTRAP(0x125) BTRAP(0x126) BTRAP(0x127)
+tl0_resv128:	BTRAP(0x128) BTRAP(0x129) BTRAP(0x12a) BTRAP(0x12b) BTRAP(0x12c)
+tl0_resv12d:	BTRAP(0x12d) BTRAP(0x12e) BTRAP(0x12f) BTRAP(0x130) BTRAP(0x131)
+tl0_resv132:	BTRAP(0x132) BTRAP(0x133) BTRAP(0x134) BTRAP(0x135) BTRAP(0x136)
+tl0_resv137:	BTRAP(0x137) BTRAP(0x138) BTRAP(0x139) BTRAP(0x13a) BTRAP(0x13b)
+tl0_resv13c:	BTRAP(0x13c) BTRAP(0x13d) BTRAP(0x13e) BTRAP(0x13f) BTRAP(0x140)
+tl0_resv141:	BTRAP(0x141) BTRAP(0x142) BTRAP(0x143) BTRAP(0x144) BTRAP(0x145)
+tl0_resv146:	BTRAP(0x146) BTRAP(0x147) BTRAP(0x148) BTRAP(0x149) BTRAP(0x14a)
+tl0_resv14b:	BTRAP(0x14b) BTRAP(0x14c) BTRAP(0x14d) BTRAP(0x14e) BTRAP(0x14f)
+tl0_resv150:	BTRAP(0x150) BTRAP(0x151) BTRAP(0x152) BTRAP(0x153) BTRAP(0x154)
+tl0_resv155:	BTRAP(0x155) BTRAP(0x156) BTRAP(0x157) BTRAP(0x158) BTRAP(0x159)
+tl0_resv15a:	BTRAP(0x15a) BTRAP(0x15b) BTRAP(0x15c) BTRAP(0x15d) BTRAP(0x15e)
+tl0_resv15f:	BTRAP(0x15f) BTRAP(0x160) BTRAP(0x161) BTRAP(0x162) BTRAP(0x163)
+tl0_resv164:	BTRAP(0x164) BTRAP(0x165) BTRAP(0x166) BTRAP(0x167) BTRAP(0x168)
+tl0_resv169:	BTRAP(0x169) BTRAP(0x16a) BTRAP(0x16b) BTRAP(0x16c)
+tl0_linux64:	LINUX_64BIT_SYSCALL_TRAP
+tl0_gsctx:	TRAP(sparc64_get_context) TRAP(sparc64_set_context)
+tl0_resv170:	KPROBES_TRAP(0x170) KPROBES_TRAP(0x171) KGDB_TRAP(0x172)
+tl0_resv173:	BTRAP(0x173) BTRAP(0x174) BTRAP(0x175) BTRAP(0x176) BTRAP(0x177)
+tl0_resv178:	BTRAP(0x178) BTRAP(0x179) BTRAP(0x17a) BTRAP(0x17b) BTRAP(0x17c)
+tl0_resv17d:	BTRAP(0x17d) BTRAP(0x17e) BTRAP(0x17f)
+#define BTRAPS(x) BTRAP(x) BTRAP(x+1) BTRAP(x+2) BTRAP(x+3) BTRAP(x+4) BTRAP(x+5) BTRAP(x+6) BTRAP(x+7)
+tl0_resv180:	BTRAPS(0x180) BTRAPS(0x188)
+tl0_resv190:	BTRAPS(0x190) BTRAPS(0x198)
+tl0_resv1a0:	BTRAPS(0x1a0) BTRAPS(0x1a8)
+tl0_resv1b0:	BTRAPS(0x1b0) BTRAPS(0x1b8)
+tl0_resv1c0:	BTRAPS(0x1c0) BTRAPS(0x1c8)
+tl0_resv1d0:	BTRAPS(0x1d0) BTRAPS(0x1d8)
+tl0_resv1e0:	BTRAPS(0x1e0) BTRAPS(0x1e8)
+tl0_resv1f0:	BTRAPS(0x1f0) BTRAPS(0x1f8)
+
+sparc64_ttable_tl1:
+tl1_resv000:	BOOT_KERNEL    BTRAPTL1(0x1) BTRAPTL1(0x2) BTRAPTL1(0x3)
+tl1_resv004:	BTRAPTL1(0x4)  BTRAPTL1(0x5) BTRAPTL1(0x6) BTRAPTL1(0x7)
+tl1_iax:	TRAP_NOSAVE(__spitfire_insn_access_exception_tl1)
+tl1_itsb_4v:	SUN4V_ITSB_MISS
+tl1_iae:	membar #Sync
+		TRAP_NOSAVE_7INSNS(__spitfire_access_error)
+tl1_resv00b:	BTRAPTL1(0xb) BTRAPTL1(0xc) BTRAPTL1(0xd) BTRAPTL1(0xe) BTRAPTL1(0xf)
+tl1_ill:	TRAPTL1(do_ill_tl1)
+tl1_privop:	BTRAPTL1(0x11)
+tl1_resv012:	BTRAPTL1(0x12) BTRAPTL1(0x13) BTRAPTL1(0x14) BTRAPTL1(0x15)
+tl1_resv016:	BTRAPTL1(0x16) BTRAPTL1(0x17) BTRAPTL1(0x18) BTRAPTL1(0x19)
+tl1_resv01a:	BTRAPTL1(0x1a) BTRAPTL1(0x1b) BTRAPTL1(0x1c) BTRAPTL1(0x1d)
+tl1_resv01e:	BTRAPTL1(0x1e) BTRAPTL1(0x1f)
+tl1_fpdis:	TRAP_NOSAVE(do_fpdis)
+tl1_fpieee:	TRAPTL1(do_fpieee_tl1)
+tl1_fpother:	TRAPTL1(do_fpother_tl1)
+tl1_tof:	TRAPTL1(do_tof_tl1)
+tl1_cwin:	CLEAN_WINDOW
+tl1_div0:	TRAPTL1(do_div0_tl1)
+tl1_resv029:	BTRAPTL1(0x29) BTRAPTL1(0x2a) BTRAPTL1(0x2b) BTRAPTL1(0x2c)
+tl1_resv02d:	BTRAPTL1(0x2d) BTRAPTL1(0x2e) BTRAPTL1(0x2f)
+tl1_dax:	TRAP_NOSAVE(__spitfire_data_access_exception_tl1)
+tl1_dtsb_4v:	SUN4V_DTSB_MISS
+tl1_dae:	membar #Sync
+		TRAP_NOSAVE_7INSNS(__spitfire_access_error)
+tl1_resv033:	BTRAPTL1(0x33)
+tl1_mna:	TRAP_NOSAVE(do_mna)
+tl1_lddfmna:	TRAPTL1(do_lddfmna_tl1)
+tl1_stdfmna:	TRAPTL1(do_stdfmna_tl1)
+tl1_privact:	BTRAPTL1(0x37)
+tl1_resv038:	BTRAPTL1(0x38) BTRAPTL1(0x39) BTRAPTL1(0x3a) BTRAPTL1(0x3b)
+tl1_resv03c:	BTRAPTL1(0x3c) BTRAPTL1(0x3d) BTRAPTL1(0x3e) BTRAPTL1(0x3f)
+tl1_resv040:	BTRAPTL1(0x40)
+tl1_irq1:	TRAP_IRQ(do_irq_tl1, 1)  TRAP_IRQ(do_irq_tl1, 2)  TRAP_IRQ(do_irq_tl1, 3)
+tl1_irq4:	TRAP_IRQ(do_irq_tl1, 4)  TRAP_IRQ(do_irq_tl1, 5)  TRAP_IRQ(do_irq_tl1, 6)
+tl1_irq7:	TRAP_IRQ(do_irq_tl1, 7)  TRAP_IRQ(do_irq_tl1, 8)  TRAP_IRQ(do_irq_tl1, 9)
+tl1_irq10:	TRAP_IRQ(do_irq_tl1, 10) TRAP_IRQ(do_irq_tl1, 11)
+tl1_irq12:	TRAP_IRQ(do_irq_tl1, 12) TRAP_IRQ(do_irq_tl1, 13)
+tl1_irq14:	TRAP_IRQ(do_irq_tl1, 14) TRAP_IRQ(do_irq_tl1, 15)
+tl1_resv050:	BTRAPTL1(0x50) BTRAPTL1(0x51) BTRAPTL1(0x52) BTRAPTL1(0x53)
+tl1_resv054:	BTRAPTL1(0x54) BTRAPTL1(0x55) BTRAPTL1(0x56) BTRAPTL1(0x57)
+tl1_resv058:	BTRAPTL1(0x58) BTRAPTL1(0x59) BTRAPTL1(0x5a) BTRAPTL1(0x5b)
+tl1_resv05c:	BTRAPTL1(0x5c) BTRAPTL1(0x5d) BTRAPTL1(0x5e) BTRAPTL1(0x5f)
+tl1_ivec:	TRAP_IVEC
+tl1_paw:	TRAPTL1(do_paw_tl1)
+tl1_vaw:	TRAPTL1(do_vaw_tl1)
+tl1_cee:	BTRAPTL1(0x63)
+tl1_iamiss:	BTRAPTL1(0x64) BTRAPTL1(0x65) BTRAPTL1(0x66) BTRAPTL1(0x67)
+tl1_damiss:
+#include	"dtlb_miss.S"
+tl1_daprot:
+#include	"dtlb_prot.S"
+tl1_fecc:	BTRAPTL1(0x70)	/* Fast-ECC on Cheetah */
+tl1_dcpe:	BTRAPTL1(0x71)	/* D-cache Parity Error on Cheetah+ */
+tl1_icpe:	BTRAPTL1(0x72)	/* I-cache Parity Error on Cheetah+ */
+tl1_resv073:	BTRAPTL1(0x73)
+tl1_resv074:	BTRAPTL1(0x74) BTRAPTL1(0x75) BTRAPTL1(0x76) BTRAPTL1(0x77)
+tl1_resv078:	BTRAPTL1(0x78) BTRAPTL1(0x79) BTRAPTL1(0x7a) BTRAPTL1(0x7b)
+tl1_resv07c:	BTRAPTL1(0x7c) BTRAPTL1(0x7d) BTRAPTL1(0x7e) BTRAPTL1(0x7f)
+tl1_s0n:	SPILL_0_NORMAL
+tl1_s1n:	SPILL_1_NORMAL
+tl1_s2n:	SPILL_2_NORMAL
+tl1_s3n:	SPILL_3_NORMAL
+tl1_s4n:	SPILL_4_NORMAL
+tl1_s5n:	SPILL_5_NORMAL
+tl1_s6n:	SPILL_6_NORMAL
+tl1_s7n:	SPILL_7_NORMAL
+tl1_s0o:	SPILL_0_OTHER
+tl1_s1o:	SPILL_1_OTHER
+tl1_s2o:	SPILL_2_OTHER
+tl1_s3o:	SPILL_3_OTHER
+tl1_s4o:	SPILL_4_OTHER
+tl1_s5o:	SPILL_5_OTHER
+tl1_s6o:	SPILL_6_OTHER
+tl1_s7o:	SPILL_7_OTHER
+tl1_f0n:	FILL_0_NORMAL
+tl1_f1n:	FILL_1_NORMAL
+tl1_f2n:	FILL_2_NORMAL
+tl1_f3n:	FILL_3_NORMAL
+tl1_f4n:	FILL_4_NORMAL
+tl1_f5n:	FILL_5_NORMAL
+tl1_f6n:	FILL_6_NORMAL
+tl1_f7n:	FILL_7_NORMAL
+tl1_f0o:	FILL_0_OTHER
+tl1_f1o:	FILL_1_OTHER
+tl1_f2o:	FILL_2_OTHER
+tl1_f3o:	FILL_3_OTHER
+tl1_f4o:	FILL_4_OTHER
+tl1_f5o:	FILL_5_OTHER
+tl1_f6o:	FILL_6_OTHER
+tl1_f7o:	FILL_7_OTHER
diff --git a/arch/sparc/kernel/una_asm.S b/arch/sparc/kernel/una_asm_32.S
index 8cc03458eb7e..8cc03458eb7e 100644
--- a/arch/sparc/kernel/una_asm.S
+++ b/arch/sparc/kernel/una_asm_32.S
diff --git a/arch/sparc/kernel/una_asm_64.S b/arch/sparc/kernel/una_asm_64.S
new file mode 100644
index 000000000000..be183fe41443
--- /dev/null
+++ b/arch/sparc/kernel/una_asm_64.S
@@ -0,0 +1,146 @@
+/* una_asm.S: Kernel unaligned trap assembler helpers.
+ *
+ * Copyright (C) 1996,2005 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+	.text
+
+	.globl	__do_int_store
+__do_int_store:
+	rd	%asi, %o4
+	wr	%o3, 0, %asi
+	mov	%o2, %g3
+	cmp	%o1, 2
+	be,pn	%icc, 2f
+	 cmp	%o1, 4
+	be,pt	%icc, 1f
+	 srlx	%g3, 24, %g2
+	srlx	%g3, 56, %g1
+	srlx	%g3, 48, %g7
+4:	stba	%g1, [%o0] %asi
+	srlx	%g3, 40, %g1
+5:	stba	%g7, [%o0 + 1] %asi
+	srlx	%g3, 32, %g7
+6:	stba	%g1, [%o0 + 2] %asi
+7:	stba	%g7, [%o0 + 3] %asi
+	srlx	%g3, 16, %g1
+8:	stba	%g2, [%o0 + 4] %asi
+	srlx	%g3, 8, %g7
+9:	stba	%g1, [%o0 + 5] %asi
+10:	stba	%g7, [%o0 + 6] %asi
+	ba,pt	%xcc, 0f
+11:	 stba	%g3, [%o0 + 7] %asi
+1:	srl	%g3, 16, %g7
+12:	stba	%g2, [%o0] %asi
+	srl	%g3, 8, %g2
+13:	stba	%g7, [%o0 + 1] %asi
+14:	stba	%g2, [%o0 + 2] %asi
+	ba,pt	%xcc, 0f
+15:	 stba	%g3, [%o0 + 3] %asi
+2:	srl	%g3, 8, %g2
+16:	stba	%g2, [%o0] %asi
+17:	stba	%g3, [%o0 + 1] %asi
+0:
+	wr	%o4, 0x0, %asi
+	retl
+	 mov	0, %o0
+	.size	__do_int_store, .-__do_int_store
+
+	.section	__ex_table,"a"
+	.word		4b, __retl_efault
+	.word		5b, __retl_efault
+	.word		6b, __retl_efault
+	.word		7b, __retl_efault
+	.word		8b, __retl_efault
+	.word		9b, __retl_efault
+	.word		10b, __retl_efault
+	.word		11b, __retl_efault
+	.word		12b, __retl_efault
+	.word		13b, __retl_efault
+	.word		14b, __retl_efault
+	.word		15b, __retl_efault
+	.word		16b, __retl_efault
+	.word		17b, __retl_efault
+	.previous
+
+	.globl	do_int_load
+do_int_load:
+	rd	%asi, %o5
+	wr	%o4, 0, %asi
+	cmp	%o1, 8
+	bge,pn	%icc, 9f
+	 cmp	%o1, 4
+	be,pt	%icc, 6f
+4:	 lduba	[%o2] %asi, %g2
+5:	lduba	[%o2 + 1] %asi, %g3
+	sll	%g2, 8, %g2
+	brz,pt	%o3, 3f
+	 add	%g2, %g3, %g2
+	sllx	%g2, 48, %g2
+	srax	%g2, 48, %g2
+3:	ba,pt	%xcc, 0f
+	 stx	%g2, [%o0]
+6:	lduba	[%o2 + 1] %asi, %g3
+	sll	%g2, 24, %g2
+7:	lduba	[%o2 + 2] %asi, %g7
+	sll	%g3, 16, %g3
+8:	lduba	[%o2 + 3] %asi, %g1
+	sll	%g7, 8, %g7
+	or	%g2, %g3, %g2
+	or	%g7, %g1, %g7
+	or	%g2, %g7, %g2
+	brnz,a,pt %o3, 3f
+	 sra	%g2, 0, %g2
+3:	ba,pt	%xcc, 0f
+	 stx	%g2, [%o0]
+9:	lduba	[%o2] %asi, %g2
+10:	lduba	[%o2 + 1] %asi, %g3
+	sllx	%g2, 56, %g2
+11:	lduba	[%o2 + 2] %asi, %g7
+	sllx	%g3, 48, %g3
+12:	lduba	[%o2 + 3] %asi, %g1
+	sllx	%g7, 40, %g7
+	sllx	%g1, 32, %g1
+	or	%g2, %g3, %g2
+	or	%g7, %g1, %g7
+13:	lduba	[%o2 + 4] %asi, %g3
+	or	%g2, %g7, %g7
+14:	lduba	[%o2 + 5] %asi, %g1
+	sllx	%g3, 24, %g3
+15:	lduba	[%o2 + 6] %asi, %g2
+	sllx	%g1, 16, %g1
+	or	%g7, %g3, %g7
+16:	lduba	[%o2 + 7] %asi, %g3
+	sllx	%g2, 8, %g2
+	or	%g7, %g1, %g7
+	or	%g2, %g3, %g2
+	or	%g7, %g2, %g7
+	cmp	%o1, 8
+	be,a,pt %icc, 0f
+	 stx	%g7, [%o0]
+	srlx	%g7, 32, %g2
+	sra	%g7, 0, %g7
+	stx	%g2, [%o0]
+	stx	%g7, [%o0 + 8]
+0:
+	wr	%o5, 0x0, %asi
+	retl
+	 mov	0, %o0
+	.size	__do_int_load, .-__do_int_load
+
+	.section	__ex_table,"a"
+	.word		4b, __retl_efault
+	.word		5b, __retl_efault
+	.word		6b, __retl_efault
+	.word		7b, __retl_efault
+	.word		8b, __retl_efault
+	.word		9b, __retl_efault
+	.word		10b, __retl_efault
+	.word		11b, __retl_efault
+	.word		12b, __retl_efault
+	.word		13b, __retl_efault
+	.word		14b, __retl_efault
+	.word		15b, __retl_efault
+	.word		16b, __retl_efault
+	.previous
diff --git a/arch/sparc/kernel/unaligned.c b/arch/sparc/kernel/unaligned_32.c
index c2a28c5ad650..c2a28c5ad650 100644
--- a/arch/sparc/kernel/unaligned.c
+++ b/arch/sparc/kernel/unaligned_32.c
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
new file mode 100644
index 000000000000..203ddfad9f27
--- /dev/null
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -0,0 +1,690 @@
+/*
+ * unaligned.c: Unaligned load/store trap handling with special
+ *              cases for the kernel to do them more quickly.
+ *
+ * Copyright (C) 1996,2008 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <asm/asi.h>
+#include <asm/ptrace.h>
+#include <asm/pstate.h>
+#include <asm/processor.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <linux/smp.h>
+#include <linux/bitops.h>
+#include <asm/fpumacro.h>
+
+/* #define DEBUG_MNA */
+
+enum direction {
+	load,    /* ld, ldd, ldh, ldsh */
+	store,   /* st, std, sth, stsh */
+	both,    /* Swap, ldstub, cas, ... */
+	fpld,
+	fpst,
+	invalid,
+};
+
+#ifdef DEBUG_MNA
+static char *dirstrings[] = {
+  "load", "store", "both", "fpload", "fpstore", "invalid"
+};
+#endif
+
+static inline enum direction decode_direction(unsigned int insn)
+{
+	unsigned long tmp = (insn >> 21) & 1;
+
+	if (!tmp)
+		return load;
+	else {
+		switch ((insn>>19)&0xf) {
+		case 15: /* swap* */
+			return both;
+		default:
+			return store;
+		}
+	}
+}
+
+/* 16 = double-word, 8 = extra-word, 4 = word, 2 = half-word */
+static inline int decode_access_size(unsigned int insn)
+{
+	unsigned int tmp;
+
+	tmp = ((insn >> 19) & 0xf);
+	if (tmp == 11 || tmp == 14) /* ldx/stx */
+		return 8;
+	tmp &= 3;
+	if (!tmp)
+		return 4;
+	else if (tmp == 3)
+		return 16;	/* ldd/std - Although it is actually 8 */
+	else if (tmp == 2)
+		return 2;
+	else {
+		printk("Impossible unaligned trap. insn=%08x\n", insn);
+		die_if_kernel("Byte sized unaligned access?!?!", current_thread_info()->kregs);
+
+		/* GCC should never warn that control reaches the end
+		 * of this function without returning a value because
+		 * die_if_kernel() is marked with attribute 'noreturn'.
+		 * Alas, some versions do...
+		 */
+
+		return 0;
+	}
+}
+
+static inline int decode_asi(unsigned int insn, struct pt_regs *regs)
+{
+	if (insn & 0x800000) {
+		if (insn & 0x2000)
+			return (unsigned char)(regs->tstate >> 24);	/* %asi */
+		else
+			return (unsigned char)(insn >> 5);		/* imm_asi */
+	} else
+		return ASI_P;
+}
+
+/* 0x400000 = signed, 0 = unsigned */
+static inline int decode_signedness(unsigned int insn)
+{
+	return (insn & 0x400000);
+}
+
+static inline void maybe_flush_windows(unsigned int rs1, unsigned int rs2,
+				       unsigned int rd, int from_kernel)
+{
+	if (rs2 >= 16 || rs1 >= 16 || rd >= 16) {
+		if (from_kernel != 0)
+			__asm__ __volatile__("flushw");
+		else
+			flushw_user();
+	}
+}
+
+static inline long sign_extend_imm13(long imm)
+{
+	return imm << 51 >> 51;
+}
+
+static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
+{
+	unsigned long value;
+	
+	if (reg < 16)
+		return (!reg ? 0 : regs->u_regs[reg]);
+	if (regs->tstate & TSTATE_PRIV) {
+		struct reg_window *win;
+		win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS);
+		value = win->locals[reg - 16];
+	} else if (test_thread_flag(TIF_32BIT)) {
+		struct reg_window32 __user *win32;
+		win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
+		get_user(value, &win32->locals[reg - 16]);
+	} else {
+		struct reg_window __user *win;
+		win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
+		get_user(value, &win->locals[reg - 16]);
+	}
+	return value;
+}
+
+static unsigned long *fetch_reg_addr(unsigned int reg, struct pt_regs *regs)
+{
+	if (reg < 16)
+		return &regs->u_regs[reg];
+	if (regs->tstate & TSTATE_PRIV) {
+		struct reg_window *win;
+		win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS);
+		return &win->locals[reg - 16];
+	} else if (test_thread_flag(TIF_32BIT)) {
+		struct reg_window32 *win32;
+		win32 = (struct reg_window32 *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
+		return (unsigned long *)&win32->locals[reg - 16];
+	} else {
+		struct reg_window *win;
+		win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS);
+		return &win->locals[reg - 16];
+	}
+}
+
+unsigned long compute_effective_address(struct pt_regs *regs,
+					unsigned int insn, unsigned int rd)
+{
+	unsigned int rs1 = (insn >> 14) & 0x1f;
+	unsigned int rs2 = insn & 0x1f;
+	int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
+
+	if (insn & 0x2000) {
+		maybe_flush_windows(rs1, 0, rd, from_kernel);
+		return (fetch_reg(rs1, regs) + sign_extend_imm13(insn));
+	} else {
+		maybe_flush_windows(rs1, rs2, rd, from_kernel);
+		return (fetch_reg(rs1, regs) + fetch_reg(rs2, regs));
+	}
+}
+
+/* This is just to make gcc think die_if_kernel does return... */
+static void __used unaligned_panic(char *str, struct pt_regs *regs)
+{
+	die_if_kernel(str, regs);
+}
+
+extern int do_int_load(unsigned long *dest_reg, int size,
+		       unsigned long *saddr, int is_signed, int asi);
+	
+extern int __do_int_store(unsigned long *dst_addr, int size,
+			  unsigned long src_val, int asi);
+
+static inline int do_int_store(int reg_num, int size, unsigned long *dst_addr,
+			       struct pt_regs *regs, int asi, int orig_asi)
+{
+	unsigned long zero = 0;
+	unsigned long *src_val_p = &zero;
+	unsigned long src_val;
+
+	if (size == 16) {
+		size = 8;
+		zero = (((long)(reg_num ?
+		        (unsigned)fetch_reg(reg_num, regs) : 0)) << 32) |
+			(unsigned)fetch_reg(reg_num + 1, regs);
+	} else if (reg_num) {
+		src_val_p = fetch_reg_addr(reg_num, regs);
+	}
+	src_val = *src_val_p;
+	if (unlikely(asi != orig_asi)) {
+		switch (size) {
+		case 2:
+			src_val = swab16(src_val);
+			break;
+		case 4:
+			src_val = swab32(src_val);
+			break;
+		case 8:
+			src_val = swab64(src_val);
+			break;
+		case 16:
+		default:
+			BUG();
+			break;
+		};
+	}
+	return __do_int_store(dst_addr, size, src_val, asi);
+}
+
+static inline void advance(struct pt_regs *regs)
+{
+	regs->tpc   = regs->tnpc;
+	regs->tnpc += 4;
+	if (test_thread_flag(TIF_32BIT)) {
+		regs->tpc &= 0xffffffff;
+		regs->tnpc &= 0xffffffff;
+	}
+}
+
+static inline int floating_point_load_or_store_p(unsigned int insn)
+{
+	return (insn >> 24) & 1;
+}
+
+static inline int ok_for_kernel(unsigned int insn)
+{
+	return !floating_point_load_or_store_p(insn);
+}
+
+static void kernel_mna_trap_fault(int fixup_tstate_asi)
+{
+	struct pt_regs *regs = current_thread_info()->kern_una_regs;
+	unsigned int insn = current_thread_info()->kern_una_insn;
+	const struct exception_table_entry *entry;
+
+	entry = search_exception_tables(regs->tpc);
+	if (!entry) {
+		unsigned long address;
+
+		address = compute_effective_address(regs, insn,
+						    ((insn >> 25) & 0x1f));
+        	if (address < PAGE_SIZE) {
+                	printk(KERN_ALERT "Unable to handle kernel NULL "
+			       "pointer dereference in mna handler");
+        	} else
+                	printk(KERN_ALERT "Unable to handle kernel paging "
+			       "request in mna handler");
+	        printk(KERN_ALERT " at virtual address %016lx\n",address);
+		printk(KERN_ALERT "current->{active_,}mm->context = %016lx\n",
+			(current->mm ? CTX_HWBITS(current->mm->context) :
+			CTX_HWBITS(current->active_mm->context)));
+		printk(KERN_ALERT "current->{active_,}mm->pgd = %016lx\n",
+			(current->mm ? (unsigned long) current->mm->pgd :
+			(unsigned long) current->active_mm->pgd));
+	        die_if_kernel("Oops", regs);
+		/* Not reached */
+	}
+	regs->tpc = entry->fixup;
+	regs->tnpc = regs->tpc + 4;
+
+	if (fixup_tstate_asi) {
+		regs->tstate &= ~TSTATE_ASI;
+		regs->tstate |= (ASI_AIUS << 24UL);
+	}
+}
+
+static void log_unaligned(struct pt_regs *regs)
+{
+	static unsigned long count, last_time;
+
+	if (time_after(jiffies, last_time + 5 * HZ))
+		count = 0;
+	if (count < 5) {
+		last_time = jiffies;
+		count++;
+		printk("Kernel unaligned access at TPC[%lx] %pS\n",
+		       regs->tpc, (void *) regs->tpc);
+	}
+}
+
+asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
+{
+	enum direction dir = decode_direction(insn);
+	int size = decode_access_size(insn);
+	int orig_asi, asi;
+
+	current_thread_info()->kern_una_regs = regs;
+	current_thread_info()->kern_una_insn = insn;
+
+	orig_asi = asi = decode_asi(insn, regs);
+
+	/* If this is a {get,put}_user() on an unaligned userspace pointer,
+	 * just signal a fault and do not log the event.
+	 */
+	if (asi == ASI_AIUS) {
+		kernel_mna_trap_fault(0);
+		return;
+	}
+
+	log_unaligned(regs);
+
+	if (!ok_for_kernel(insn) || dir == both) {
+		printk("Unsupported unaligned load/store trap for kernel "
+		       "at <%016lx>.\n", regs->tpc);
+		unaligned_panic("Kernel does fpu/atomic "
+				"unaligned load/store.", regs);
+
+		kernel_mna_trap_fault(0);
+	} else {
+		unsigned long addr, *reg_addr;
+		int err;
+
+		addr = compute_effective_address(regs, insn,
+						 ((insn >> 25) & 0x1f));
+#ifdef DEBUG_MNA
+		printk("KMNA: pc=%016lx [dir=%s addr=%016lx size=%d] "
+		       "retpc[%016lx]\n",
+		       regs->tpc, dirstrings[dir], addr, size,
+		       regs->u_regs[UREG_RETPC]);
+#endif
+		switch (asi) {
+		case ASI_NL:
+		case ASI_AIUPL:
+		case ASI_AIUSL:
+		case ASI_PL:
+		case ASI_SL:
+		case ASI_PNFL:
+		case ASI_SNFL:
+			asi &= ~0x08;
+			break;
+		};
+		switch (dir) {
+		case load:
+			reg_addr = fetch_reg_addr(((insn>>25)&0x1f), regs);
+			err = do_int_load(reg_addr, size,
+					  (unsigned long *) addr,
+					  decode_signedness(insn), asi);
+			if (likely(!err) && unlikely(asi != orig_asi)) {
+				unsigned long val_in = *reg_addr;
+				switch (size) {
+				case 2:
+					val_in = swab16(val_in);
+					break;
+				case 4:
+					val_in = swab32(val_in);
+					break;
+				case 8:
+					val_in = swab64(val_in);
+					break;
+				case 16:
+				default:
+					BUG();
+					break;
+				};
+				*reg_addr = val_in;
+			}
+			break;
+
+		case store:
+			err = do_int_store(((insn>>25)&0x1f), size,
+					   (unsigned long *) addr, regs,
+					   asi, orig_asi);
+			break;
+
+		default:
+			panic("Impossible kernel unaligned trap.");
+			/* Not reached... */
+		}
+		if (unlikely(err))
+			kernel_mna_trap_fault(1);
+		else
+			advance(regs);
+	}
+}
+
+static char popc_helper[] = {
+0, 1, 1, 2, 1, 2, 2, 3,
+1, 2, 2, 3, 2, 3, 3, 4, 
+};
+
+int handle_popc(u32 insn, struct pt_regs *regs)
+{
+	u64 value;
+	int ret, i, rd = ((insn >> 25) & 0x1f);
+	int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
+	                        
+	if (insn & 0x2000) {
+		maybe_flush_windows(0, 0, rd, from_kernel);
+		value = sign_extend_imm13(insn);
+	} else {
+		maybe_flush_windows(0, insn & 0x1f, rd, from_kernel);
+		value = fetch_reg(insn & 0x1f, regs);
+	}
+	for (ret = 0, i = 0; i < 16; i++) {
+		ret += popc_helper[value & 0xf];
+		value >>= 4;
+	}
+	if (rd < 16) {
+		if (rd)
+			regs->u_regs[rd] = ret;
+	} else {
+		if (test_thread_flag(TIF_32BIT)) {
+			struct reg_window32 __user *win32;
+			win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
+			put_user(ret, &win32->locals[rd - 16]);
+		} else {
+			struct reg_window __user *win;
+			win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
+			put_user(ret, &win->locals[rd - 16]);
+		}
+	}
+	advance(regs);
+	return 1;
+}
+
+extern void do_fpother(struct pt_regs *regs);
+extern void do_privact(struct pt_regs *regs);
+extern void spitfire_data_access_exception(struct pt_regs *regs,
+					   unsigned long sfsr,
+					   unsigned long sfar);
+extern void sun4v_data_access_exception(struct pt_regs *regs,
+					unsigned long addr,
+					unsigned long type_ctx);
+
+int handle_ldf_stq(u32 insn, struct pt_regs *regs)
+{
+	unsigned long addr = compute_effective_address(regs, insn, 0);
+	int freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20);
+	struct fpustate *f = FPUSTATE;
+	int asi = decode_asi(insn, regs);
+	int flag = (freg < 32) ? FPRS_DL : FPRS_DU;
+
+	save_and_clear_fpu();
+	current_thread_info()->xfsr[0] &= ~0x1c000;
+	if (freg & 3) {
+		current_thread_info()->xfsr[0] |= (6 << 14) /* invalid_fp_register */;
+		do_fpother(regs);
+		return 0;
+	}
+	if (insn & 0x200000) {
+		/* STQ */
+		u64 first = 0, second = 0;
+		
+		if (current_thread_info()->fpsaved[0] & flag) {
+			first = *(u64 *)&f->regs[freg];
+			second = *(u64 *)&f->regs[freg+2];
+		}
+		if (asi < 0x80) {
+			do_privact(regs);
+			return 1;
+		}
+		switch (asi) {
+		case ASI_P:
+		case ASI_S: break;
+		case ASI_PL:
+		case ASI_SL: 
+			{
+				/* Need to convert endians */
+				u64 tmp = __swab64p(&first);
+				
+				first = __swab64p(&second);
+				second = tmp;
+				break;
+			}
+		default:
+			if (tlb_type == hypervisor)
+				sun4v_data_access_exception(regs, addr, 0);
+			else
+				spitfire_data_access_exception(regs, 0, addr);
+			return 1;
+		}
+		if (put_user (first >> 32, (u32 __user *)addr) ||
+		    __put_user ((u32)first, (u32 __user *)(addr + 4)) ||
+		    __put_user (second >> 32, (u32 __user *)(addr + 8)) ||
+		    __put_user ((u32)second, (u32 __user *)(addr + 12))) {
+			if (tlb_type == hypervisor)
+				sun4v_data_access_exception(regs, addr, 0);
+			else
+				spitfire_data_access_exception(regs, 0, addr);
+		    	return 1;
+		}
+	} else {
+		/* LDF, LDDF, LDQF */
+		u32 data[4] __attribute__ ((aligned(8)));
+		int size, i;
+		int err;
+
+		if (asi < 0x80) {
+			do_privact(regs);
+			return 1;
+		} else if (asi > ASI_SNFL) {
+			if (tlb_type == hypervisor)
+				sun4v_data_access_exception(regs, addr, 0);
+			else
+				spitfire_data_access_exception(regs, 0, addr);
+			return 1;
+		}
+		switch (insn & 0x180000) {
+		case 0x000000: size = 1; break;
+		case 0x100000: size = 4; break;
+		default: size = 2; break;
+		}
+		for (i = 0; i < size; i++)
+			data[i] = 0;
+		
+		err = get_user (data[0], (u32 __user *) addr);
+		if (!err) {
+			for (i = 1; i < size; i++)
+				err |= __get_user (data[i], (u32 __user *)(addr + 4*i));
+		}
+		if (err && !(asi & 0x2 /* NF */)) {
+			if (tlb_type == hypervisor)
+				sun4v_data_access_exception(regs, addr, 0);
+			else
+				spitfire_data_access_exception(regs, 0, addr);
+			return 1;
+		}
+		if (asi & 0x8) /* Little */ {
+			u64 tmp;
+
+			switch (size) {
+			case 1: data[0] = le32_to_cpup(data + 0); break;
+			default:*(u64 *)(data + 0) = le64_to_cpup((u64 *)(data + 0));
+				break;
+			case 4: tmp = le64_to_cpup((u64 *)(data + 0));
+				*(u64 *)(data + 0) = le64_to_cpup((u64 *)(data + 2));
+				*(u64 *)(data + 2) = tmp;
+				break;
+			}
+		}
+		if (!(current_thread_info()->fpsaved[0] & FPRS_FEF)) {
+			current_thread_info()->fpsaved[0] = FPRS_FEF;
+			current_thread_info()->gsr[0] = 0;
+		}
+		if (!(current_thread_info()->fpsaved[0] & flag)) {
+			if (freg < 32)
+				memset(f->regs, 0, 32*sizeof(u32));
+			else
+				memset(f->regs+32, 0, 32*sizeof(u32));
+		}
+		memcpy(f->regs + freg, data, size * 4);
+		current_thread_info()->fpsaved[0] |= flag;
+	}
+	advance(regs);
+	return 1;
+}
+
+void handle_ld_nf(u32 insn, struct pt_regs *regs)
+{
+	int rd = ((insn >> 25) & 0x1f);
+	int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
+	unsigned long *reg;
+	                        
+	maybe_flush_windows(0, 0, rd, from_kernel);
+	reg = fetch_reg_addr(rd, regs);
+	if (from_kernel || rd < 16) {
+		reg[0] = 0;
+		if ((insn & 0x780000) == 0x180000)
+			reg[1] = 0;
+	} else if (test_thread_flag(TIF_32BIT)) {
+		put_user(0, (int __user *) reg);
+		if ((insn & 0x780000) == 0x180000)
+			put_user(0, ((int __user *) reg) + 1);
+	} else {
+		put_user(0, (unsigned long __user *) reg);
+		if ((insn & 0x780000) == 0x180000)
+			put_user(0, (unsigned long __user *) reg + 1);
+	}
+	advance(regs);
+}
+
+void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr)
+{
+	unsigned long pc = regs->tpc;
+	unsigned long tstate = regs->tstate;
+	u32 insn;
+	u32 first, second;
+	u64 value;
+	u8 freg;
+	int flag;
+	struct fpustate *f = FPUSTATE;
+
+	if (tstate & TSTATE_PRIV)
+		die_if_kernel("lddfmna from kernel", regs);
+	if (test_thread_flag(TIF_32BIT))
+		pc = (u32)pc;
+	if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
+		int asi = decode_asi(insn, regs);
+		if ((asi > ASI_SNFL) ||
+		    (asi < ASI_P))
+			goto daex;
+		if (get_user(first, (u32 __user *)sfar) ||
+		     get_user(second, (u32 __user *)(sfar + 4))) {
+			if (asi & 0x2) /* NF */ {
+				first = 0; second = 0;
+			} else
+				goto daex;
+		}
+		save_and_clear_fpu();
+		freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20);
+		value = (((u64)first) << 32) | second;
+		if (asi & 0x8) /* Little */
+			value = __swab64p(&value);
+		flag = (freg < 32) ? FPRS_DL : FPRS_DU;
+		if (!(current_thread_info()->fpsaved[0] & FPRS_FEF)) {
+			current_thread_info()->fpsaved[0] = FPRS_FEF;
+			current_thread_info()->gsr[0] = 0;
+		}
+		if (!(current_thread_info()->fpsaved[0] & flag)) {
+			if (freg < 32)
+				memset(f->regs, 0, 32*sizeof(u32));
+			else
+				memset(f->regs+32, 0, 32*sizeof(u32));
+		}
+		*(u64 *)(f->regs + freg) = value;
+		current_thread_info()->fpsaved[0] |= flag;
+	} else {
+daex:
+		if (tlb_type == hypervisor)
+			sun4v_data_access_exception(regs, sfar, sfsr);
+		else
+			spitfire_data_access_exception(regs, sfsr, sfar);
+		return;
+	}
+	advance(regs);
+	return;
+}
+
+void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr)
+{
+	unsigned long pc = regs->tpc;
+	unsigned long tstate = regs->tstate;
+	u32 insn;
+	u64 value;
+	u8 freg;
+	int flag;
+	struct fpustate *f = FPUSTATE;
+
+	if (tstate & TSTATE_PRIV)
+		die_if_kernel("stdfmna from kernel", regs);
+	if (test_thread_flag(TIF_32BIT))
+		pc = (u32)pc;
+	if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
+		int asi = decode_asi(insn, regs);
+		freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20);
+		value = 0;
+		flag = (freg < 32) ? FPRS_DL : FPRS_DU;
+		if ((asi > ASI_SNFL) ||
+		    (asi < ASI_P))
+			goto daex;
+		save_and_clear_fpu();
+		if (current_thread_info()->fpsaved[0] & flag)
+			value = *(u64 *)&f->regs[freg];
+		switch (asi) {
+		case ASI_P:
+		case ASI_S: break;
+		case ASI_PL:
+		case ASI_SL: 
+			value = __swab64p(&value); break;
+		default: goto daex;
+		}
+		if (put_user (value >> 32, (u32 __user *) sfar) ||
+		    __put_user ((u32)value, (u32 __user *)(sfar + 4)))
+			goto daex;
+	} else {
+daex:
+		if (tlb_type == hypervisor)
+			sun4v_data_access_exception(regs, sfar, sfsr);
+		else
+			spitfire_data_access_exception(regs, sfsr, sfar);
+		return;
+	}
+	advance(regs);
+	return;
+}
diff --git a/arch/sparc/kernel/us2e_cpufreq.c b/arch/sparc/kernel/us2e_cpufreq.c
new file mode 100644
index 000000000000..791c15138f3a
--- /dev/null
+++ b/arch/sparc/kernel/us2e_cpufreq.c
@@ -0,0 +1,413 @@
+/* us2e_cpufreq.c: UltraSPARC-IIe cpu frequency support
+ *
+ * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ *
+ * Many thanks to Dominik Brodowski for fixing up the cpufreq
+ * infrastructure in order to make this driver easier to implement.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/cpufreq.h>
+#include <linux/threads.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+
+#include <asm/asi.h>
+#include <asm/timer.h>
+
+static struct cpufreq_driver *cpufreq_us2e_driver;
+
+struct us2e_freq_percpu_info {
+	struct cpufreq_frequency_table table[6];
+};
+
+/* Indexed by cpu number. */
+static struct us2e_freq_percpu_info *us2e_freq_table;
+
+#define HBIRD_MEM_CNTL0_ADDR	0x1fe0000f010UL
+#define HBIRD_ESTAR_MODE_ADDR	0x1fe0000f080UL
+
+/* UltraSPARC-IIe has five dividers: 1, 2, 4, 6, and 8.  These are controlled
+ * in the ESTAR mode control register.
+ */
+#define ESTAR_MODE_DIV_1	0x0000000000000000UL
+#define ESTAR_MODE_DIV_2	0x0000000000000001UL
+#define ESTAR_MODE_DIV_4	0x0000000000000003UL
+#define ESTAR_MODE_DIV_6	0x0000000000000002UL
+#define ESTAR_MODE_DIV_8	0x0000000000000004UL
+#define ESTAR_MODE_DIV_MASK	0x0000000000000007UL
+
+#define MCTRL0_SREFRESH_ENAB	0x0000000000010000UL
+#define MCTRL0_REFR_COUNT_MASK	0x0000000000007f00UL
+#define MCTRL0_REFR_COUNT_SHIFT	8
+#define MCTRL0_REFR_INTERVAL	7800
+#define MCTRL0_REFR_CLKS_P_CNT	64
+
+static unsigned long read_hbreg(unsigned long addr)
+{
+	unsigned long ret;
+
+	__asm__ __volatile__("ldxa	[%1] %2, %0"
+			     : "=&r" (ret)
+			     : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+	return ret;
+}
+
+static void write_hbreg(unsigned long addr, unsigned long val)
+{
+	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
+			     "membar	#Sync"
+			     : /* no outputs */
+			     : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+			     : "memory");
+	if (addr == HBIRD_ESTAR_MODE_ADDR) {
+		/* Need to wait 16 clock cycles for the PLL to lock.  */
+		udelay(1);
+	}
+}
+
+static void self_refresh_ctl(int enable)
+{
+	unsigned long mctrl = read_hbreg(HBIRD_MEM_CNTL0_ADDR);
+
+	if (enable)
+		mctrl |= MCTRL0_SREFRESH_ENAB;
+	else
+		mctrl &= ~MCTRL0_SREFRESH_ENAB;
+	write_hbreg(HBIRD_MEM_CNTL0_ADDR, mctrl);
+	(void) read_hbreg(HBIRD_MEM_CNTL0_ADDR);
+}
+
+static void frob_mem_refresh(int cpu_slowing_down,
+			     unsigned long clock_tick,
+			     unsigned long old_divisor, unsigned long divisor)
+{
+	unsigned long old_refr_count, refr_count, mctrl;
+
+	refr_count  = (clock_tick * MCTRL0_REFR_INTERVAL);
+	refr_count /= (MCTRL0_REFR_CLKS_P_CNT * divisor * 1000000000UL);
+
+	mctrl = read_hbreg(HBIRD_MEM_CNTL0_ADDR);
+	old_refr_count = (mctrl & MCTRL0_REFR_COUNT_MASK)
+		>> MCTRL0_REFR_COUNT_SHIFT;
+
+	mctrl &= ~MCTRL0_REFR_COUNT_MASK;
+	mctrl |= refr_count << MCTRL0_REFR_COUNT_SHIFT;
+	write_hbreg(HBIRD_MEM_CNTL0_ADDR, mctrl);
+	mctrl = read_hbreg(HBIRD_MEM_CNTL0_ADDR);
+
+	if (cpu_slowing_down && !(mctrl & MCTRL0_SREFRESH_ENAB)) {
+		unsigned long usecs;
+
+		/* We have to wait for both refresh counts (old
+		 * and new) to go to zero.
+		 */
+		usecs = (MCTRL0_REFR_CLKS_P_CNT *
+			 (refr_count + old_refr_count) *
+			 1000000UL *
+			 old_divisor) / clock_tick;
+		udelay(usecs + 1UL);
+	}
+}
+
+static void us2e_transition(unsigned long estar, unsigned long new_bits,
+			    unsigned long clock_tick,
+			    unsigned long old_divisor, unsigned long divisor)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	estar &= ~ESTAR_MODE_DIV_MASK;
+
+	/* This is based upon the state transition diagram in the IIe manual.  */
+	if (old_divisor == 2 && divisor == 1) {
+		self_refresh_ctl(0);
+		write_hbreg(HBIRD_ESTAR_MODE_ADDR, estar | new_bits);
+		frob_mem_refresh(0, clock_tick, old_divisor, divisor);
+	} else if (old_divisor == 1 && divisor == 2) {
+		frob_mem_refresh(1, clock_tick, old_divisor, divisor);
+		write_hbreg(HBIRD_ESTAR_MODE_ADDR, estar | new_bits);
+		self_refresh_ctl(1);
+	} else if (old_divisor == 1 && divisor > 2) {
+		us2e_transition(estar, ESTAR_MODE_DIV_2, clock_tick,
+				1, 2);
+		us2e_transition(estar, new_bits, clock_tick,
+				2, divisor);
+	} else if (old_divisor > 2 && divisor == 1) {
+		us2e_transition(estar, ESTAR_MODE_DIV_2, clock_tick,
+				old_divisor, 2);
+		us2e_transition(estar, new_bits, clock_tick,
+				2, divisor);
+	} else if (old_divisor < divisor) {
+		frob_mem_refresh(0, clock_tick, old_divisor, divisor);
+		write_hbreg(HBIRD_ESTAR_MODE_ADDR, estar | new_bits);
+	} else if (old_divisor > divisor) {
+		write_hbreg(HBIRD_ESTAR_MODE_ADDR, estar | new_bits);
+		frob_mem_refresh(1, clock_tick, old_divisor, divisor);
+	} else {
+		BUG();
+	}
+
+	local_irq_restore(flags);
+}
+
+static unsigned long index_to_estar_mode(unsigned int index)
+{
+	switch (index) {
+	case 0:
+		return ESTAR_MODE_DIV_1;
+
+	case 1:
+		return ESTAR_MODE_DIV_2;
+
+	case 2:
+		return ESTAR_MODE_DIV_4;
+
+	case 3:
+		return ESTAR_MODE_DIV_6;
+
+	case 4:
+		return ESTAR_MODE_DIV_8;
+
+	default:
+		BUG();
+	};
+}
+
+static unsigned long index_to_divisor(unsigned int index)
+{
+	switch (index) {
+	case 0:
+		return 1;
+
+	case 1:
+		return 2;
+
+	case 2:
+		return 4;
+
+	case 3:
+		return 6;
+
+	case 4:
+		return 8;
+
+	default:
+		BUG();
+	};
+}
+
+static unsigned long estar_to_divisor(unsigned long estar)
+{
+	unsigned long ret;
+
+	switch (estar & ESTAR_MODE_DIV_MASK) {
+	case ESTAR_MODE_DIV_1:
+		ret = 1;
+		break;
+	case ESTAR_MODE_DIV_2:
+		ret = 2;
+		break;
+	case ESTAR_MODE_DIV_4:
+		ret = 4;
+		break;
+	case ESTAR_MODE_DIV_6:
+		ret = 6;
+		break;
+	case ESTAR_MODE_DIV_8:
+		ret = 8;
+		break;
+	default:
+		BUG();
+	};
+
+	return ret;
+}
+
+static unsigned int us2e_freq_get(unsigned int cpu)
+{
+	cpumask_t cpus_allowed;
+	unsigned long clock_tick, estar;
+
+	if (!cpu_online(cpu))
+		return 0;
+
+	cpus_allowed = current->cpus_allowed;
+	set_cpus_allowed(current, cpumask_of_cpu(cpu));
+
+	clock_tick = sparc64_get_clock_tick(cpu) / 1000;
+	estar = read_hbreg(HBIRD_ESTAR_MODE_ADDR);
+
+	set_cpus_allowed(current, cpus_allowed);
+
+	return clock_tick / estar_to_divisor(estar);
+}
+
+static void us2e_set_cpu_divider_index(unsigned int cpu, unsigned int index)
+{
+	unsigned long new_bits, new_freq;
+	unsigned long clock_tick, divisor, old_divisor, estar;
+	cpumask_t cpus_allowed;
+	struct cpufreq_freqs freqs;
+
+	if (!cpu_online(cpu))
+		return;
+
+	cpus_allowed = current->cpus_allowed;
+	set_cpus_allowed(current, cpumask_of_cpu(cpu));
+
+	new_freq = clock_tick = sparc64_get_clock_tick(cpu) / 1000;
+	new_bits = index_to_estar_mode(index);
+	divisor = index_to_divisor(index);
+	new_freq /= divisor;
+
+	estar = read_hbreg(HBIRD_ESTAR_MODE_ADDR);
+
+	old_divisor = estar_to_divisor(estar);
+
+	freqs.old = clock_tick / old_divisor;
+	freqs.new = new_freq;
+	freqs.cpu = cpu;
+	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+
+	if (old_divisor != divisor)
+		us2e_transition(estar, new_bits, clock_tick * 1000,
+				old_divisor, divisor);
+
+	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+
+	set_cpus_allowed(current, cpus_allowed);
+}
+
+static int us2e_freq_target(struct cpufreq_policy *policy,
+			  unsigned int target_freq,
+			  unsigned int relation)
+{
+	unsigned int new_index = 0;
+
+	if (cpufreq_frequency_table_target(policy,
+					   &us2e_freq_table[policy->cpu].table[0],
+					   target_freq, relation, &new_index))
+		return -EINVAL;
+
+	us2e_set_cpu_divider_index(policy->cpu, new_index);
+
+	return 0;
+}
+
+static int us2e_freq_verify(struct cpufreq_policy *policy)
+{
+	return cpufreq_frequency_table_verify(policy,
+					      &us2e_freq_table[policy->cpu].table[0]);
+}
+
+static int __init us2e_freq_cpu_init(struct cpufreq_policy *policy)
+{
+	unsigned int cpu = policy->cpu;
+	unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
+	struct cpufreq_frequency_table *table =
+		&us2e_freq_table[cpu].table[0];
+
+	table[0].index = 0;
+	table[0].frequency = clock_tick / 1;
+	table[1].index = 1;
+	table[1].frequency = clock_tick / 2;
+	table[2].index = 2;
+	table[2].frequency = clock_tick / 4;
+	table[2].index = 3;
+	table[2].frequency = clock_tick / 6;
+	table[2].index = 4;
+	table[2].frequency = clock_tick / 8;
+	table[2].index = 5;
+	table[3].frequency = CPUFREQ_TABLE_END;
+
+	policy->cpuinfo.transition_latency = 0;
+	policy->cur = clock_tick;
+
+	return cpufreq_frequency_table_cpuinfo(policy, table);
+}
+
+static int us2e_freq_cpu_exit(struct cpufreq_policy *policy)
+{
+	if (cpufreq_us2e_driver)
+		us2e_set_cpu_divider_index(policy->cpu, 0);
+
+	return 0;
+}
+
+static int __init us2e_freq_init(void)
+{
+	unsigned long manuf, impl, ver;
+	int ret;
+
+	if (tlb_type != spitfire)
+		return -ENODEV;
+
+	__asm__("rdpr %%ver, %0" : "=r" (ver));
+	manuf = ((ver >> 48) & 0xffff);
+	impl  = ((ver >> 32) & 0xffff);
+
+	if (manuf == 0x17 && impl == 0x13) {
+		struct cpufreq_driver *driver;
+
+		ret = -ENOMEM;
+		driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
+		if (!driver)
+			goto err_out;
+
+		us2e_freq_table = kzalloc(
+			(NR_CPUS * sizeof(struct us2e_freq_percpu_info)),
+			GFP_KERNEL);
+		if (!us2e_freq_table)
+			goto err_out;
+
+		driver->init = us2e_freq_cpu_init;
+		driver->verify = us2e_freq_verify;
+		driver->target = us2e_freq_target;
+		driver->get = us2e_freq_get;
+		driver->exit = us2e_freq_cpu_exit;
+		driver->owner = THIS_MODULE,
+		strcpy(driver->name, "UltraSPARC-IIe");
+
+		cpufreq_us2e_driver = driver;
+		ret = cpufreq_register_driver(driver);
+		if (ret)
+			goto err_out;
+
+		return 0;
+
+err_out:
+		if (driver) {
+			kfree(driver);
+			cpufreq_us2e_driver = NULL;
+		}
+		kfree(us2e_freq_table);
+		us2e_freq_table = NULL;
+		return ret;
+	}
+
+	return -ENODEV;
+}
+
+static void __exit us2e_freq_exit(void)
+{
+	if (cpufreq_us2e_driver) {
+		cpufreq_unregister_driver(cpufreq_us2e_driver);
+		kfree(cpufreq_us2e_driver);
+		cpufreq_us2e_driver = NULL;
+		kfree(us2e_freq_table);
+		us2e_freq_table = NULL;
+	}
+}
+
+MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_DESCRIPTION("cpufreq driver for UltraSPARC-IIe");
+MODULE_LICENSE("GPL");
+
+module_init(us2e_freq_init);
+module_exit(us2e_freq_exit);
diff --git a/arch/sparc/kernel/us3_cpufreq.c b/arch/sparc/kernel/us3_cpufreq.c
new file mode 100644
index 000000000000..365b6464e2ce
--- /dev/null
+++ b/arch/sparc/kernel/us3_cpufreq.c
@@ -0,0 +1,274 @@
+/* us3_cpufreq.c: UltraSPARC-III cpu frequency support
+ *
+ * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ *
+ * Many thanks to Dominik Brodowski for fixing up the cpufreq
+ * infrastructure in order to make this driver easier to implement.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/cpufreq.h>
+#include <linux/threads.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+
+#include <asm/head.h>
+#include <asm/timer.h>
+
+static struct cpufreq_driver *cpufreq_us3_driver;
+
+struct us3_freq_percpu_info {
+	struct cpufreq_frequency_table table[4];
+};
+
+/* Indexed by cpu number. */
+static struct us3_freq_percpu_info *us3_freq_table;
+
+/* UltraSPARC-III has three dividers: 1, 2, and 32.  These are controlled
+ * in the Safari config register.
+ */
+#define SAFARI_CFG_DIV_1	0x0000000000000000UL
+#define SAFARI_CFG_DIV_2	0x0000000040000000UL
+#define SAFARI_CFG_DIV_32	0x0000000080000000UL
+#define SAFARI_CFG_DIV_MASK	0x00000000C0000000UL
+
+static unsigned long read_safari_cfg(void)
+{
+	unsigned long ret;
+
+	__asm__ __volatile__("ldxa	[%%g0] %1, %0"
+			     : "=&r" (ret)
+			     : "i" (ASI_SAFARI_CONFIG));
+	return ret;
+}
+
+static void write_safari_cfg(unsigned long val)
+{
+	__asm__ __volatile__("stxa	%0, [%%g0] %1\n\t"
+			     "membar	#Sync"
+			     : /* no outputs */
+			     : "r" (val), "i" (ASI_SAFARI_CONFIG)
+			     : "memory");
+}
+
+static unsigned long get_current_freq(unsigned int cpu, unsigned long safari_cfg)
+{
+	unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
+	unsigned long ret;
+
+	switch (safari_cfg & SAFARI_CFG_DIV_MASK) {
+	case SAFARI_CFG_DIV_1:
+		ret = clock_tick / 1;
+		break;
+	case SAFARI_CFG_DIV_2:
+		ret = clock_tick / 2;
+		break;
+	case SAFARI_CFG_DIV_32:
+		ret = clock_tick / 32;
+		break;
+	default:
+		BUG();
+	};
+
+	return ret;
+}
+
+static unsigned int us3_freq_get(unsigned int cpu)
+{
+	cpumask_t cpus_allowed;
+	unsigned long reg;
+	unsigned int ret;
+
+	if (!cpu_online(cpu))
+		return 0;
+
+	cpus_allowed = current->cpus_allowed;
+	set_cpus_allowed(current, cpumask_of_cpu(cpu));
+
+	reg = read_safari_cfg();
+	ret = get_current_freq(cpu, reg);
+
+	set_cpus_allowed(current, cpus_allowed);
+
+	return ret;
+}
+
+static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index)
+{
+	unsigned long new_bits, new_freq, reg;
+	cpumask_t cpus_allowed;
+	struct cpufreq_freqs freqs;
+
+	if (!cpu_online(cpu))
+		return;
+
+	cpus_allowed = current->cpus_allowed;
+	set_cpus_allowed(current, cpumask_of_cpu(cpu));
+
+	new_freq = sparc64_get_clock_tick(cpu) / 1000;
+	switch (index) {
+	case 0:
+		new_bits = SAFARI_CFG_DIV_1;
+		new_freq /= 1;
+		break;
+	case 1:
+		new_bits = SAFARI_CFG_DIV_2;
+		new_freq /= 2;
+		break;
+	case 2:
+		new_bits = SAFARI_CFG_DIV_32;
+		new_freq /= 32;
+		break;
+
+	default:
+		BUG();
+	};
+
+	reg = read_safari_cfg();
+
+	freqs.old = get_current_freq(cpu, reg);
+	freqs.new = new_freq;
+	freqs.cpu = cpu;
+	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+
+	reg &= ~SAFARI_CFG_DIV_MASK;
+	reg |= new_bits;
+	write_safari_cfg(reg);
+
+	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+
+	set_cpus_allowed(current, cpus_allowed);
+}
+
+static int us3_freq_target(struct cpufreq_policy *policy,
+			  unsigned int target_freq,
+			  unsigned int relation)
+{
+	unsigned int new_index = 0;
+
+	if (cpufreq_frequency_table_target(policy,
+					   &us3_freq_table[policy->cpu].table[0],
+					   target_freq,
+					   relation,
+					   &new_index))
+		return -EINVAL;
+
+	us3_set_cpu_divider_index(policy->cpu, new_index);
+
+	return 0;
+}
+
+static int us3_freq_verify(struct cpufreq_policy *policy)
+{
+	return cpufreq_frequency_table_verify(policy,
+					      &us3_freq_table[policy->cpu].table[0]);
+}
+
+static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
+{
+	unsigned int cpu = policy->cpu;
+	unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
+	struct cpufreq_frequency_table *table =
+		&us3_freq_table[cpu].table[0];
+
+	table[0].index = 0;
+	table[0].frequency = clock_tick / 1;
+	table[1].index = 1;
+	table[1].frequency = clock_tick / 2;
+	table[2].index = 2;
+	table[2].frequency = clock_tick / 32;
+	table[3].index = 0;
+	table[3].frequency = CPUFREQ_TABLE_END;
+
+	policy->cpuinfo.transition_latency = 0;
+	policy->cur = clock_tick;
+
+	return cpufreq_frequency_table_cpuinfo(policy, table);
+}
+
+static int us3_freq_cpu_exit(struct cpufreq_policy *policy)
+{
+	if (cpufreq_us3_driver)
+		us3_set_cpu_divider_index(policy->cpu, 0);
+
+	return 0;
+}
+
+static int __init us3_freq_init(void)
+{
+	unsigned long manuf, impl, ver;
+	int ret;
+
+	if (tlb_type != cheetah && tlb_type != cheetah_plus)
+		return -ENODEV;
+
+	__asm__("rdpr %%ver, %0" : "=r" (ver));
+	manuf = ((ver >> 48) & 0xffff);
+	impl  = ((ver >> 32) & 0xffff);
+
+	if (manuf == CHEETAH_MANUF &&
+	    (impl == CHEETAH_IMPL ||
+	     impl == CHEETAH_PLUS_IMPL ||
+	     impl == JAGUAR_IMPL ||
+	     impl == PANTHER_IMPL)) {
+		struct cpufreq_driver *driver;
+
+		ret = -ENOMEM;
+		driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
+		if (!driver)
+			goto err_out;
+
+		us3_freq_table = kzalloc(
+			(NR_CPUS * sizeof(struct us3_freq_percpu_info)),
+			GFP_KERNEL);
+		if (!us3_freq_table)
+			goto err_out;
+
+		driver->init = us3_freq_cpu_init;
+		driver->verify = us3_freq_verify;
+		driver->target = us3_freq_target;
+		driver->get = us3_freq_get;
+		driver->exit = us3_freq_cpu_exit;
+		driver->owner = THIS_MODULE,
+		strcpy(driver->name, "UltraSPARC-III");
+
+		cpufreq_us3_driver = driver;
+		ret = cpufreq_register_driver(driver);
+		if (ret)
+			goto err_out;
+
+		return 0;
+
+err_out:
+		if (driver) {
+			kfree(driver);
+			cpufreq_us3_driver = NULL;
+		}
+		kfree(us3_freq_table);
+		us3_freq_table = NULL;
+		return ret;
+	}
+
+	return -ENODEV;
+}
+
+static void __exit us3_freq_exit(void)
+{
+	if (cpufreq_us3_driver) {
+		cpufreq_unregister_driver(cpufreq_us3_driver);
+		kfree(cpufreq_us3_driver);
+		cpufreq_us3_driver = NULL;
+		kfree(us3_freq_table);
+		us3_freq_table = NULL;
+	}
+}
+
+MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_DESCRIPTION("cpufreq driver for UltraSPARC-III");
+MODULE_LICENSE("GPL");
+
+module_init(us3_freq_init);
+module_exit(us3_freq_exit);
diff --git a/arch/sparc/kernel/utrap.S b/arch/sparc/kernel/utrap.S
new file mode 100644
index 000000000000..b7f0f3f3a909
--- /dev/null
+++ b/arch/sparc/kernel/utrap.S
@@ -0,0 +1,29 @@
+	.globl		utrap_trap
+	.type		utrap_trap,#function
+utrap_trap:		/* %g3=handler,%g4=level */
+	TRAP_LOAD_THREAD_REG(%g6, %g1)
+	ldx		[%g6 + TI_UTRAPS], %g1
+	brnz,pt		%g1, invoke_utrap
+	 nop
+
+	ba,pt		%xcc, etrap
+	 rd		%pc, %g7
+	mov		%l4, %o1
+        call		bad_trap
+	 add		%sp, PTREGS_OFF, %o0
+	ba,pt		%xcc, rtrap
+	 nop
+
+invoke_utrap:
+	sllx		%g3, 3, %g3
+	ldx		[%g1 + %g3], %g1
+	save		%sp, -128, %sp
+	rdpr		%tstate, %l6
+	rdpr		%cwp, %l7
+	andn		%l6, TSTATE_CWP, %l6
+	wrpr		%l6, %l7, %tstate
+	rdpr		%tpc, %l6
+	rdpr		%tnpc, %l7
+	wrpr		%g1, 0, %tnpc
+	done
+	.size		utrap_trap,.-utrap_trap
diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
new file mode 100644
index 000000000000..92b1f8ec01de
--- /dev/null
+++ b/arch/sparc/kernel/vio.c
@@ -0,0 +1,451 @@
+/* vio.c: Virtual I/O channel devices probing infrastructure.
+ *
+ *    Copyright (c) 2003-2005 IBM Corp.
+ *     Dave Engebretsen engebret@us.ibm.com
+ *     Santiago Leon santil@us.ibm.com
+ *     Hollis Blanchard <hollisb@us.ibm.com>
+ *     Stephen Rothwell
+ *
+ * Adapted to sparc64 by David S. Miller davem@davemloft.net
+ */
+
+#include <linux/kernel.h>
+#include <linux/irq.h>
+#include <linux/init.h>
+
+#include <asm/mdesc.h>
+#include <asm/vio.h>
+
+static const struct vio_device_id *vio_match_device(
+	const struct vio_device_id *matches,
+	const struct vio_dev *dev)
+{
+	const char *type, *compat;
+	int len;
+
+	type = dev->type;
+	compat = dev->compat;
+	len = dev->compat_len;
+
+	while (matches->type[0] || matches->compat[0]) {
+		int match = 1;
+		if (matches->type[0])
+			match &= !strcmp(matches->type, type);
+
+		if (matches->compat[0]) {
+			match &= len &&
+				of_find_in_proplist(compat, matches->compat, len);
+		}
+		if (match)
+			return matches;
+		matches++;
+	}
+	return NULL;
+}
+
+static int vio_bus_match(struct device *dev, struct device_driver *drv)
+{
+	struct vio_dev *vio_dev = to_vio_dev(dev);
+	struct vio_driver *vio_drv = to_vio_driver(drv);
+	const struct vio_device_id *matches = vio_drv->id_table;
+
+	if (!matches)
+		return 0;
+
+	return vio_match_device(matches, vio_dev) != NULL;
+}
+
+static int vio_device_probe(struct device *dev)
+{
+	struct vio_dev *vdev = to_vio_dev(dev);
+	struct vio_driver *drv = to_vio_driver(dev->driver);
+	const struct vio_device_id *id;
+	int error = -ENODEV;
+
+	if (drv->probe) {
+		id = vio_match_device(drv->id_table, vdev);
+		if (id)
+			error = drv->probe(vdev, id);
+	}
+
+	return error;
+}
+
+static int vio_device_remove(struct device *dev)
+{
+	struct vio_dev *vdev = to_vio_dev(dev);
+	struct vio_driver *drv = to_vio_driver(dev->driver);
+
+	if (drv->remove)
+		return drv->remove(vdev);
+
+	return 1;
+}
+
+static ssize_t devspec_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct vio_dev *vdev = to_vio_dev(dev);
+	const char *str = "none";
+
+	if (!strcmp(vdev->type, "vnet-port"))
+		str = "vnet";
+	else if (!strcmp(vdev->type, "vdc-port"))
+		str = "vdisk";
+
+	return sprintf(buf, "%s\n", str);
+}
+
+static ssize_t type_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct vio_dev *vdev = to_vio_dev(dev);
+	return sprintf(buf, "%s\n", vdev->type);
+}
+
+static struct device_attribute vio_dev_attrs[] = {
+	__ATTR_RO(devspec),
+	__ATTR_RO(type),
+	__ATTR_NULL
+};
+
+static struct bus_type vio_bus_type = {
+	.name		= "vio",
+	.dev_attrs	= vio_dev_attrs,
+	.match		= vio_bus_match,
+	.probe		= vio_device_probe,
+	.remove		= vio_device_remove,
+};
+
+int vio_register_driver(struct vio_driver *viodrv)
+{
+	viodrv->driver.bus = &vio_bus_type;
+
+	return driver_register(&viodrv->driver);
+}
+EXPORT_SYMBOL(vio_register_driver);
+
+void vio_unregister_driver(struct vio_driver *viodrv)
+{
+	driver_unregister(&viodrv->driver);
+}
+EXPORT_SYMBOL(vio_unregister_driver);
+
+static void vio_dev_release(struct device *dev)
+{
+	kfree(to_vio_dev(dev));
+}
+
+static ssize_t
+show_pciobppath_attr(struct device *dev, struct device_attribute *attr,
+		     char *buf)
+{
+	struct vio_dev *vdev;
+	struct device_node *dp;
+
+	vdev = to_vio_dev(dev);
+	dp = vdev->dp;
+
+	return snprintf (buf, PAGE_SIZE, "%s\n", dp->full_name);
+}
+
+static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH,
+		   show_pciobppath_attr, NULL);
+
+static struct device_node *cdev_node;
+
+static struct vio_dev *root_vdev;
+static u64 cdev_cfg_handle;
+
+static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp,
+				  struct vio_dev *vdev)
+{
+	u64 a;
+
+	mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
+		const u64 *chan_id;
+		const u64 *irq;
+		u64 target;
+
+		target = mdesc_arc_target(hp, a);
+
+		irq = mdesc_get_property(hp, target, "tx-ino", NULL);
+		if (irq)
+			vdev->tx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
+
+		irq = mdesc_get_property(hp, target, "rx-ino", NULL);
+		if (irq)
+			vdev->rx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
+
+		chan_id = mdesc_get_property(hp, target, "id", NULL);
+		if (chan_id)
+			vdev->channel_id = *chan_id;
+	}
+}
+
+static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
+				      struct device *parent)
+{
+	const char *type, *compat, *bus_id_name;
+	struct device_node *dp;
+	struct vio_dev *vdev;
+	int err, tlen, clen;
+	const u64 *id, *cfg_handle;
+	u64 a;
+
+	type = mdesc_get_property(hp, mp, "device-type", &tlen);
+	if (!type) {
+		type = mdesc_get_property(hp, mp, "name", &tlen);
+		if (!type) {
+			type = mdesc_node_name(hp, mp);
+			tlen = strlen(type) + 1;
+		}
+	}
+	if (tlen > VIO_MAX_TYPE_LEN) {
+		printk(KERN_ERR "VIO: Type string [%s] is too long.\n",
+		       type);
+		return NULL;
+	}
+
+	id = mdesc_get_property(hp, mp, "id", NULL);
+
+	cfg_handle = NULL;
+	mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
+		u64 target;
+
+		target = mdesc_arc_target(hp, a);
+		cfg_handle = mdesc_get_property(hp, target,
+						"cfg-handle", NULL);
+		if (cfg_handle)
+			break;
+	}
+
+	bus_id_name = type;
+	if (!strcmp(type, "domain-services-port"))
+		bus_id_name = "ds";
+
+	if (strlen(bus_id_name) >= BUS_ID_SIZE - 4) {
+		printk(KERN_ERR "VIO: bus_id_name [%s] is too long.\n",
+		       bus_id_name);
+		return NULL;
+	}
+
+	compat = mdesc_get_property(hp, mp, "device-type", &clen);
+	if (!compat) {
+		clen = 0;
+	} else if (clen > VIO_MAX_COMPAT_LEN) {
+		printk(KERN_ERR "VIO: Compat len %d for [%s] is too long.\n",
+		       clen, type);
+		return NULL;
+	}
+
+	vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
+	if (!vdev) {
+		printk(KERN_ERR "VIO: Could not allocate vio_dev\n");
+		return NULL;
+	}
+
+	vdev->mp = mp;
+	memcpy(vdev->type, type, tlen);
+	if (compat)
+		memcpy(vdev->compat, compat, clen);
+	else
+		memset(vdev->compat, 0, sizeof(vdev->compat));
+	vdev->compat_len = clen;
+
+	vdev->channel_id = ~0UL;
+	vdev->tx_irq = ~0;
+	vdev->rx_irq = ~0;
+
+	vio_fill_channel_info(hp, mp, vdev);
+
+	if (!id) {
+		dev_set_name(&vdev->dev, "%s", bus_id_name);
+		vdev->dev_no = ~(u64)0;
+	} else if (!cfg_handle) {
+		dev_set_name(&vdev->dev, "%s-%lu", bus_id_name, *id);
+		vdev->dev_no = *id;
+	} else {
+		dev_set_name(&vdev->dev, "%s-%lu-%lu", bus_id_name,
+			     *cfg_handle, *id);
+		vdev->dev_no = *cfg_handle;
+	}
+
+	vdev->dev.parent = parent;
+	vdev->dev.bus = &vio_bus_type;
+	vdev->dev.release = vio_dev_release;
+
+	if (parent == NULL) {
+		dp = cdev_node;
+	} else if (to_vio_dev(parent) == root_vdev) {
+		dp = of_get_next_child(cdev_node, NULL);
+		while (dp) {
+			if (!strcmp(dp->type, type))
+				break;
+
+			dp = of_get_next_child(cdev_node, dp);
+		}
+	} else {
+		dp = to_vio_dev(parent)->dp;
+	}
+	vdev->dp = dp;
+
+	printk(KERN_INFO "VIO: Adding device %s\n", dev_name(&vdev->dev));
+
+	err = device_register(&vdev->dev);
+	if (err) {
+		printk(KERN_ERR "VIO: Could not register device %s, err=%d\n",
+		       dev_name(&vdev->dev), err);
+		kfree(vdev);
+		return NULL;
+	}
+	if (vdev->dp)
+		err = sysfs_create_file(&vdev->dev.kobj,
+					&dev_attr_obppath.attr);
+
+	return vdev;
+}
+
+static void vio_add(struct mdesc_handle *hp, u64 node)
+{
+	(void) vio_create_one(hp, node, &root_vdev->dev);
+}
+
+static int vio_md_node_match(struct device *dev, void *arg)
+{
+	struct vio_dev *vdev = to_vio_dev(dev);
+
+	if (vdev->mp == (u64) arg)
+		return 1;
+
+	return 0;
+}
+
+static void vio_remove(struct mdesc_handle *hp, u64 node)
+{
+	struct device *dev;
+
+	dev = device_find_child(&root_vdev->dev, (void *) node,
+				vio_md_node_match);
+	if (dev) {
+		printk(KERN_INFO "VIO: Removing device %s\n", dev_name(dev));
+
+		device_unregister(dev);
+	}
+}
+
+static struct mdesc_notifier_client vio_device_notifier = {
+	.add		= vio_add,
+	.remove		= vio_remove,
+	.node_name	= "virtual-device-port",
+};
+
+/* We are only interested in domain service ports under the
+ * "domain-services" node.  On control nodes there is another port
+ * under "openboot" that we should not mess with as aparently that is
+ * reserved exclusively for OBP use.
+ */
+static void vio_add_ds(struct mdesc_handle *hp, u64 node)
+{
+	int found;
+	u64 a;
+
+	found = 0;
+	mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) {
+		u64 target = mdesc_arc_target(hp, a);
+		const char *name = mdesc_node_name(hp, target);
+
+		if (!strcmp(name, "domain-services")) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (found)
+		(void) vio_create_one(hp, node, &root_vdev->dev);
+}
+
+static struct mdesc_notifier_client vio_ds_notifier = {
+	.add		= vio_add_ds,
+	.remove		= vio_remove,
+	.node_name	= "domain-services-port",
+};
+
+static const char *channel_devices_node = "channel-devices";
+static const char *channel_devices_compat = "SUNW,sun4v-channel-devices";
+static const char *cfg_handle_prop = "cfg-handle";
+
+static int __init vio_init(void)
+{
+	struct mdesc_handle *hp;
+	const char *compat;
+	const u64 *cfg_handle;
+	int err, len;
+	u64 root;
+
+	err = bus_register(&vio_bus_type);
+	if (err) {
+		printk(KERN_ERR "VIO: Could not register bus type err=%d\n",
+		       err);
+		return err;
+	}
+
+	hp = mdesc_grab();
+	if (!hp)
+		return 0;
+
+	root = mdesc_node_by_name(hp, MDESC_NODE_NULL, channel_devices_node);
+	if (root == MDESC_NODE_NULL) {
+		printk(KERN_INFO "VIO: No channel-devices MDESC node.\n");
+		mdesc_release(hp);
+		return 0;
+	}
+
+	cdev_node = of_find_node_by_name(NULL, "channel-devices");
+	err = -ENODEV;
+	if (!cdev_node) {
+		printk(KERN_INFO "VIO: No channel-devices OBP node.\n");
+		goto out_release;
+	}
+
+	compat = mdesc_get_property(hp, root, "compatible", &len);
+	if (!compat) {
+		printk(KERN_ERR "VIO: Channel devices lacks compatible "
+		       "property\n");
+		goto out_release;
+	}
+	if (!of_find_in_proplist(compat, channel_devices_compat, len)) {
+		printk(KERN_ERR "VIO: Channel devices node lacks (%s) "
+		       "compat entry.\n", channel_devices_compat);
+		goto out_release;
+	}
+
+	cfg_handle = mdesc_get_property(hp, root, cfg_handle_prop, NULL);
+	if (!cfg_handle) {
+		printk(KERN_ERR "VIO: Channel devices lacks %s property\n",
+		       cfg_handle_prop);
+		goto out_release;
+	}
+
+	cdev_cfg_handle = *cfg_handle;
+
+	root_vdev = vio_create_one(hp, root, NULL);
+	err = -ENODEV;
+	if (!root_vdev) {
+		printk(KERN_ERR "VIO: Coult not create root device.\n");
+		goto out_release;
+	}
+
+	mdesc_register_notifier(&vio_device_notifier);
+	mdesc_register_notifier(&vio_ds_notifier);
+
+	mdesc_release(hp);
+
+	return err;
+
+out_release:
+	mdesc_release(hp);
+	return err;
+}
+
+postcore_initcall(vio_init);
diff --git a/arch/sparc/kernel/viohs.c b/arch/sparc/kernel/viohs.c
new file mode 100644
index 000000000000..708fa1705fbe
--- /dev/null
+++ b/arch/sparc/kernel/viohs.c
@@ -0,0 +1,822 @@
+/* viohs.c: LDOM Virtual I/O handshake helper layer.
+ *
+ * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+#include <asm/ldc.h>
+#include <asm/vio.h>
+
+int vio_ldc_send(struct vio_driver_state *vio, void *data, int len)
+{
+	int err, limit = 1000;
+
+	err = -EINVAL;
+	while (limit-- > 0) {
+		err = ldc_write(vio->lp, data, len);
+		if (!err || (err != -EAGAIN))
+			break;
+		udelay(1);
+	}
+
+	return err;
+}
+EXPORT_SYMBOL(vio_ldc_send);
+
+static int send_ctrl(struct vio_driver_state *vio,
+		     struct vio_msg_tag *tag, int len)
+{
+	tag->sid = vio_send_sid(vio);
+	return vio_ldc_send(vio, tag, len);
+}
+
+static void init_tag(struct vio_msg_tag *tag, u8 type, u8 stype, u16 stype_env)
+{
+	tag->type = type;
+	tag->stype = stype;
+	tag->stype_env = stype_env;
+}
+
+static int send_version(struct vio_driver_state *vio, u16 major, u16 minor)
+{
+	struct vio_ver_info pkt;
+
+	vio->_local_sid = (u32) sched_clock();
+
+	memset(&pkt, 0, sizeof(pkt));
+	init_tag(&pkt.tag, VIO_TYPE_CTRL, VIO_SUBTYPE_INFO, VIO_VER_INFO);
+	pkt.major = major;
+	pkt.minor = minor;
+	pkt.dev_class = vio->dev_class;
+
+	viodbg(HS, "SEND VERSION INFO maj[%u] min[%u] devclass[%u]\n",
+	       major, minor, vio->dev_class);
+
+	return send_ctrl(vio, &pkt.tag, sizeof(pkt));
+}
+
+static int start_handshake(struct vio_driver_state *vio)
+{
+	int err;
+
+	viodbg(HS, "START HANDSHAKE\n");
+
+	vio->hs_state = VIO_HS_INVALID;
+
+	err = send_version(vio,
+			   vio->ver_table[0].major,
+			   vio->ver_table[0].minor);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static void flush_rx_dring(struct vio_driver_state *vio)
+{
+	struct vio_dring_state *dr;
+	u64 ident;
+
+	BUG_ON(!(vio->dr_state & VIO_DR_STATE_RXREG));
+
+	dr = &vio->drings[VIO_DRIVER_RX_RING];
+	ident = dr->ident;
+
+	BUG_ON(!vio->desc_buf);
+	kfree(vio->desc_buf);
+	vio->desc_buf = NULL;
+
+	memset(dr, 0, sizeof(*dr));
+	dr->ident = ident;
+}
+
+void vio_link_state_change(struct vio_driver_state *vio, int event)
+{
+	if (event == LDC_EVENT_UP) {
+		vio->hs_state = VIO_HS_INVALID;
+
+		switch (vio->dev_class) {
+		case VDEV_NETWORK:
+		case VDEV_NETWORK_SWITCH:
+			vio->dr_state = (VIO_DR_STATE_TXREQ |
+					 VIO_DR_STATE_RXREQ);
+			break;
+
+		case VDEV_DISK:
+			vio->dr_state = VIO_DR_STATE_TXREQ;
+			break;
+		case VDEV_DISK_SERVER:
+			vio->dr_state = VIO_DR_STATE_RXREQ;
+			break;
+		}
+		start_handshake(vio);
+	} else if (event == LDC_EVENT_RESET) {
+		vio->hs_state = VIO_HS_INVALID;
+
+		if (vio->dr_state & VIO_DR_STATE_RXREG)
+			flush_rx_dring(vio);
+
+		vio->dr_state = 0x00;
+		memset(&vio->ver, 0, sizeof(vio->ver));
+
+		ldc_disconnect(vio->lp);
+	}
+}
+EXPORT_SYMBOL(vio_link_state_change);
+
+static int handshake_failure(struct vio_driver_state *vio)
+{
+	struct vio_dring_state *dr;
+
+	/* XXX Put policy here...  Perhaps start a timer to fire
+	 * XXX in 100 ms, which will bring the link up and retry
+	 * XXX the handshake.
+	 */
+
+	viodbg(HS, "HANDSHAKE FAILURE\n");
+
+	vio->dr_state &= ~(VIO_DR_STATE_TXREG |
+			   VIO_DR_STATE_RXREG);
+
+	dr = &vio->drings[VIO_DRIVER_RX_RING];
+	memset(dr, 0, sizeof(*dr));
+
+	kfree(vio->desc_buf);
+	vio->desc_buf = NULL;
+	vio->desc_buf_len = 0;
+
+	vio->hs_state = VIO_HS_INVALID;
+
+	return -ECONNRESET;
+}
+
+static int process_unknown(struct vio_driver_state *vio, void *arg)
+{
+	struct vio_msg_tag *pkt = arg;
+
+	viodbg(HS, "UNKNOWN CONTROL [%02x:%02x:%04x:%08x]\n",
+	       pkt->type, pkt->stype, pkt->stype_env, pkt->sid);
+
+	printk(KERN_ERR "vio: ID[%lu] Resetting connection.\n",
+	       vio->vdev->channel_id);
+
+	ldc_disconnect(vio->lp);
+
+	return -ECONNRESET;
+}
+
+static int send_dreg(struct vio_driver_state *vio)
+{
+	struct vio_dring_state *dr = &vio->drings[VIO_DRIVER_TX_RING];
+	union {
+		struct vio_dring_register pkt;
+		char all[sizeof(struct vio_dring_register) +
+			 (sizeof(struct ldc_trans_cookie) *
+			  dr->ncookies)];
+	} u;
+	int i;
+
+	memset(&u, 0, sizeof(u));
+	init_tag(&u.pkt.tag, VIO_TYPE_CTRL, VIO_SUBTYPE_INFO, VIO_DRING_REG);
+	u.pkt.dring_ident = 0;
+	u.pkt.num_descr = dr->num_entries;
+	u.pkt.descr_size = dr->entry_size;
+	u.pkt.options = VIO_TX_DRING;
+	u.pkt.num_cookies = dr->ncookies;
+
+	viodbg(HS, "SEND DRING_REG INFO ndesc[%u] dsz[%u] opt[0x%x] "
+	       "ncookies[%u]\n",
+	       u.pkt.num_descr, u.pkt.descr_size, u.pkt.options,
+	       u.pkt.num_cookies);
+
+	for (i = 0; i < dr->ncookies; i++) {
+		u.pkt.cookies[i] = dr->cookies[i];
+
+		viodbg(HS, "DRING COOKIE(%d) [%016llx:%016llx]\n",
+		       i,
+		       (unsigned long long) u.pkt.cookies[i].cookie_addr,
+		       (unsigned long long) u.pkt.cookies[i].cookie_size);
+	}
+
+	return send_ctrl(vio, &u.pkt.tag, sizeof(u));
+}
+
+static int send_rdx(struct vio_driver_state *vio)
+{
+	struct vio_rdx pkt;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	init_tag(&pkt.tag, VIO_TYPE_CTRL, VIO_SUBTYPE_INFO, VIO_RDX);
+
+	viodbg(HS, "SEND RDX INFO\n");
+
+	return send_ctrl(vio, &pkt.tag, sizeof(pkt));
+}
+
+static int send_attr(struct vio_driver_state *vio)
+{
+	return vio->ops->send_attr(vio);
+}
+
+static struct vio_version *find_by_major(struct vio_driver_state *vio,
+					 u16 major)
+{
+	struct vio_version *ret = NULL;
+	int i;
+
+	for (i = 0; i < vio->ver_table_entries; i++) {
+		struct vio_version *v = &vio->ver_table[i];
+		if (v->major <= major) {
+			ret = v;
+			break;
+		}
+	}
+	return ret;
+}
+
+static int process_ver_info(struct vio_driver_state *vio,
+			    struct vio_ver_info *pkt)
+{
+	struct vio_version *vap;
+	int err;
+
+	viodbg(HS, "GOT VERSION INFO maj[%u] min[%u] devclass[%u]\n",
+	       pkt->major, pkt->minor, pkt->dev_class);
+
+	if (vio->hs_state != VIO_HS_INVALID) {
+		/* XXX Perhaps invoke start_handshake? XXX */
+		memset(&vio->ver, 0, sizeof(vio->ver));
+		vio->hs_state = VIO_HS_INVALID;
+	}
+
+	vap = find_by_major(vio, pkt->major);
+
+	vio->_peer_sid = pkt->tag.sid;
+
+	if (!vap) {
+		pkt->tag.stype = VIO_SUBTYPE_NACK;
+		pkt->major = 0;
+		pkt->minor = 0;
+		viodbg(HS, "SEND VERSION NACK maj[0] min[0]\n");
+		err = send_ctrl(vio, &pkt->tag, sizeof(*pkt));
+	} else if (vap->major != pkt->major) {
+		pkt->tag.stype = VIO_SUBTYPE_NACK;
+		pkt->major = vap->major;
+		pkt->minor = vap->minor;
+		viodbg(HS, "SEND VERSION NACK maj[%u] min[%u]\n",
+		       pkt->major, pkt->minor);
+		err = send_ctrl(vio, &pkt->tag, sizeof(*pkt));
+	} else {
+		struct vio_version ver = {
+			.major = pkt->major,
+			.minor = pkt->minor,
+		};
+		if (ver.minor > vap->minor)
+			ver.minor = vap->minor;
+		pkt->minor = ver.minor;
+		pkt->tag.stype = VIO_SUBTYPE_ACK;
+		viodbg(HS, "SEND VERSION ACK maj[%u] min[%u]\n",
+		       pkt->major, pkt->minor);
+		err = send_ctrl(vio, &pkt->tag, sizeof(*pkt));
+		if (err > 0) {
+			vio->ver = ver;
+			vio->hs_state = VIO_HS_GOTVERS;
+		}
+	}
+	if (err < 0)
+		return handshake_failure(vio);
+
+	return 0;
+}
+
+static int process_ver_ack(struct vio_driver_state *vio,
+			   struct vio_ver_info *pkt)
+{
+	viodbg(HS, "GOT VERSION ACK maj[%u] min[%u] devclass[%u]\n",
+	       pkt->major, pkt->minor, pkt->dev_class);
+
+	if (vio->hs_state & VIO_HS_GOTVERS) {
+		if (vio->ver.major != pkt->major ||
+		    vio->ver.minor != pkt->minor) {
+			pkt->tag.stype = VIO_SUBTYPE_NACK;
+			(void) send_ctrl(vio, &pkt->tag, sizeof(*pkt));
+			return handshake_failure(vio);
+		}
+	} else {
+		vio->ver.major = pkt->major;
+		vio->ver.minor = pkt->minor;
+		vio->hs_state = VIO_HS_GOTVERS;
+	}
+
+	switch (vio->dev_class) {
+	case VDEV_NETWORK:
+	case VDEV_DISK:
+		if (send_attr(vio) < 0)
+			return handshake_failure(vio);
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int process_ver_nack(struct vio_driver_state *vio,
+			    struct vio_ver_info *pkt)
+{
+	struct vio_version *nver;
+
+	viodbg(HS, "GOT VERSION NACK maj[%u] min[%u] devclass[%u]\n",
+	       pkt->major, pkt->minor, pkt->dev_class);
+
+	if ((pkt->major == 0 && pkt->minor == 0) ||
+	    !(nver = find_by_major(vio, pkt->major)))
+		return handshake_failure(vio);
+
+	if (send_version(vio, nver->major, nver->minor) < 0)
+		return handshake_failure(vio);
+
+	return 0;
+}
+
+static int process_ver(struct vio_driver_state *vio, struct vio_ver_info *pkt)
+{
+	switch (pkt->tag.stype) {
+	case VIO_SUBTYPE_INFO:
+		return process_ver_info(vio, pkt);
+
+	case VIO_SUBTYPE_ACK:
+		return process_ver_ack(vio, pkt);
+
+	case VIO_SUBTYPE_NACK:
+		return process_ver_nack(vio, pkt);
+
+	default:
+		return handshake_failure(vio);
+	};
+}
+
+static int process_attr(struct vio_driver_state *vio, void *pkt)
+{
+	int err;
+
+	if (!(vio->hs_state & VIO_HS_GOTVERS))
+		return handshake_failure(vio);
+
+	err = vio->ops->handle_attr(vio, pkt);
+	if (err < 0) {
+		return handshake_failure(vio);
+	} else {
+		vio->hs_state |= VIO_HS_GOT_ATTR;
+
+		if ((vio->dr_state & VIO_DR_STATE_TXREQ) &&
+		    !(vio->hs_state & VIO_HS_SENT_DREG)) {
+			if (send_dreg(vio) < 0)
+				return handshake_failure(vio);
+
+			vio->hs_state |= VIO_HS_SENT_DREG;
+		}
+	}
+	return 0;
+}
+
+static int all_drings_registered(struct vio_driver_state *vio)
+{
+	int need_rx, need_tx;
+
+	need_rx = (vio->dr_state & VIO_DR_STATE_RXREQ);
+	need_tx = (vio->dr_state & VIO_DR_STATE_TXREQ);
+
+	if (need_rx &&
+	    !(vio->dr_state & VIO_DR_STATE_RXREG))
+		return 0;
+
+	if (need_tx &&
+	    !(vio->dr_state & VIO_DR_STATE_TXREG))
+		return 0;
+
+	return 1;
+}
+
+static int process_dreg_info(struct vio_driver_state *vio,
+			     struct vio_dring_register *pkt)
+{
+	struct vio_dring_state *dr;
+	int i, len;
+
+	viodbg(HS, "GOT DRING_REG INFO ident[%llx] "
+	       "ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
+	       (unsigned long long) pkt->dring_ident,
+	       pkt->num_descr, pkt->descr_size, pkt->options,
+	       pkt->num_cookies);
+
+	if (!(vio->dr_state & VIO_DR_STATE_RXREQ))
+		goto send_nack;
+
+	if (vio->dr_state & VIO_DR_STATE_RXREG)
+		goto send_nack;
+
+	BUG_ON(vio->desc_buf);
+
+	vio->desc_buf = kzalloc(pkt->descr_size, GFP_ATOMIC);
+	if (!vio->desc_buf)
+		goto send_nack;
+
+	vio->desc_buf_len = pkt->descr_size;
+
+	dr = &vio->drings[VIO_DRIVER_RX_RING];
+
+	dr->num_entries = pkt->num_descr;
+	dr->entry_size = pkt->descr_size;
+	dr->ncookies = pkt->num_cookies;
+	for (i = 0; i < dr->ncookies; i++) {
+		dr->cookies[i] = pkt->cookies[i];
+
+		viodbg(HS, "DRING COOKIE(%d) [%016llx:%016llx]\n",
+		       i,
+		       (unsigned long long)
+		       pkt->cookies[i].cookie_addr,
+		       (unsigned long long)
+		       pkt->cookies[i].cookie_size);
+	}
+
+	pkt->tag.stype = VIO_SUBTYPE_ACK;
+	pkt->dring_ident = ++dr->ident;
+
+	viodbg(HS, "SEND DRING_REG ACK ident[%llx]\n",
+	       (unsigned long long) pkt->dring_ident);
+
+	len = (sizeof(*pkt) +
+	       (dr->ncookies * sizeof(struct ldc_trans_cookie)));
+	if (send_ctrl(vio, &pkt->tag, len) < 0)
+		goto send_nack;
+
+	vio->dr_state |= VIO_DR_STATE_RXREG;
+
+	return 0;
+
+send_nack:
+	pkt->tag.stype = VIO_SUBTYPE_NACK;
+	viodbg(HS, "SEND DRING_REG NACK\n");
+	(void) send_ctrl(vio, &pkt->tag, sizeof(*pkt));
+
+	return handshake_failure(vio);
+}
+
+static int process_dreg_ack(struct vio_driver_state *vio,
+			    struct vio_dring_register *pkt)
+{
+	struct vio_dring_state *dr;
+
+	viodbg(HS, "GOT DRING_REG ACK ident[%llx] "
+	       "ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
+	       (unsigned long long) pkt->dring_ident,
+	       pkt->num_descr, pkt->descr_size, pkt->options,
+	       pkt->num_cookies);
+
+	dr = &vio->drings[VIO_DRIVER_TX_RING];
+
+	if (!(vio->dr_state & VIO_DR_STATE_TXREQ))
+		return handshake_failure(vio);
+
+	dr->ident = pkt->dring_ident;
+	vio->dr_state |= VIO_DR_STATE_TXREG;
+
+	if (all_drings_registered(vio)) {
+		if (send_rdx(vio) < 0)
+			return handshake_failure(vio);
+		vio->hs_state = VIO_HS_SENT_RDX;
+	}
+	return 0;
+}
+
+static int process_dreg_nack(struct vio_driver_state *vio,
+			     struct vio_dring_register *pkt)
+{
+	viodbg(HS, "GOT DRING_REG NACK ident[%llx] "
+	       "ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
+	       (unsigned long long) pkt->dring_ident,
+	       pkt->num_descr, pkt->descr_size, pkt->options,
+	       pkt->num_cookies);
+
+	return handshake_failure(vio);
+}
+
+static int process_dreg(struct vio_driver_state *vio,
+			struct vio_dring_register *pkt)
+{
+	if (!(vio->hs_state & VIO_HS_GOTVERS))
+		return handshake_failure(vio);
+
+	switch (pkt->tag.stype) {
+	case VIO_SUBTYPE_INFO:
+		return process_dreg_info(vio, pkt);
+
+	case VIO_SUBTYPE_ACK:
+		return process_dreg_ack(vio, pkt);
+
+	case VIO_SUBTYPE_NACK:
+		return process_dreg_nack(vio, pkt);
+
+	default:
+		return handshake_failure(vio);
+	}
+}
+
+static int process_dunreg(struct vio_driver_state *vio,
+			  struct vio_dring_unregister *pkt)
+{
+	struct vio_dring_state *dr = &vio->drings[VIO_DRIVER_RX_RING];
+
+	viodbg(HS, "GOT DRING_UNREG\n");
+
+	if (pkt->dring_ident != dr->ident)
+		return 0;
+
+	vio->dr_state &= ~VIO_DR_STATE_RXREG;
+
+	memset(dr, 0, sizeof(*dr));
+
+	kfree(vio->desc_buf);
+	vio->desc_buf = NULL;
+	vio->desc_buf_len = 0;
+
+	return 0;
+}
+
+static int process_rdx_info(struct vio_driver_state *vio, struct vio_rdx *pkt)
+{
+	viodbg(HS, "GOT RDX INFO\n");
+
+	pkt->tag.stype = VIO_SUBTYPE_ACK;
+	viodbg(HS, "SEND RDX ACK\n");
+	if (send_ctrl(vio, &pkt->tag, sizeof(*pkt)) < 0)
+		return handshake_failure(vio);
+
+	vio->hs_state |= VIO_HS_SENT_RDX_ACK;
+	return 0;
+}
+
+static int process_rdx_ack(struct vio_driver_state *vio, struct vio_rdx *pkt)
+{
+	viodbg(HS, "GOT RDX ACK\n");
+
+	if (!(vio->hs_state & VIO_HS_SENT_RDX))
+		return handshake_failure(vio);
+
+	vio->hs_state |= VIO_HS_GOT_RDX_ACK;
+	return 0;
+}
+
+static int process_rdx_nack(struct vio_driver_state *vio, struct vio_rdx *pkt)
+{
+	viodbg(HS, "GOT RDX NACK\n");
+
+	return handshake_failure(vio);
+}
+
+static int process_rdx(struct vio_driver_state *vio, struct vio_rdx *pkt)
+{
+	if (!all_drings_registered(vio))
+		handshake_failure(vio);
+
+	switch (pkt->tag.stype) {
+	case VIO_SUBTYPE_INFO:
+		return process_rdx_info(vio, pkt);
+
+	case VIO_SUBTYPE_ACK:
+		return process_rdx_ack(vio, pkt);
+
+	case VIO_SUBTYPE_NACK:
+		return process_rdx_nack(vio, pkt);
+
+	default:
+		return handshake_failure(vio);
+	}
+}
+
+int vio_control_pkt_engine(struct vio_driver_state *vio, void *pkt)
+{
+	struct vio_msg_tag *tag = pkt;
+	u8 prev_state = vio->hs_state;
+	int err;
+
+	switch (tag->stype_env) {
+	case VIO_VER_INFO:
+		err = process_ver(vio, pkt);
+		break;
+
+	case VIO_ATTR_INFO:
+		err = process_attr(vio, pkt);
+		break;
+
+	case VIO_DRING_REG:
+		err = process_dreg(vio, pkt);
+		break;
+
+	case VIO_DRING_UNREG:
+		err = process_dunreg(vio, pkt);
+		break;
+
+	case VIO_RDX:
+		err = process_rdx(vio, pkt);
+		break;
+
+	default:
+		err = process_unknown(vio, pkt);
+		break;
+	}
+	if (!err &&
+	    vio->hs_state != prev_state &&
+	    (vio->hs_state & VIO_HS_COMPLETE))
+		vio->ops->handshake_complete(vio);
+
+	return err;
+}
+EXPORT_SYMBOL(vio_control_pkt_engine);
+
+void vio_conn_reset(struct vio_driver_state *vio)
+{
+}
+EXPORT_SYMBOL(vio_conn_reset);
+
+/* The issue is that the Solaris virtual disk server just mirrors the
+ * SID values it gets from the client peer.  So we work around that
+ * here in vio_{validate,send}_sid() so that the drivers don't need
+ * to be aware of this crap.
+ */
+int vio_validate_sid(struct vio_driver_state *vio, struct vio_msg_tag *tp)
+{
+	u32 sid;
+
+	/* Always let VERSION+INFO packets through unchecked, they
+	 * define the new SID.
+	 */
+	if (tp->type == VIO_TYPE_CTRL &&
+	    tp->stype == VIO_SUBTYPE_INFO &&
+	    tp->stype_env == VIO_VER_INFO)
+		return 0;
+
+	/* Ok, now figure out which SID to use.  */
+	switch (vio->dev_class) {
+	case VDEV_NETWORK:
+	case VDEV_NETWORK_SWITCH:
+	case VDEV_DISK_SERVER:
+	default:
+		sid = vio->_peer_sid;
+		break;
+
+	case VDEV_DISK:
+		sid = vio->_local_sid;
+		break;
+	}
+
+	if (sid == tp->sid)
+		return 0;
+	viodbg(DATA, "BAD SID tag->sid[%08x] peer_sid[%08x] local_sid[%08x]\n",
+	       tp->sid, vio->_peer_sid, vio->_local_sid);
+	return -EINVAL;
+}
+EXPORT_SYMBOL(vio_validate_sid);
+
+u32 vio_send_sid(struct vio_driver_state *vio)
+{
+	switch (vio->dev_class) {
+	case VDEV_NETWORK:
+	case VDEV_NETWORK_SWITCH:
+	case VDEV_DISK:
+	default:
+		return vio->_local_sid;
+
+	case VDEV_DISK_SERVER:
+		return vio->_peer_sid;
+	}
+}
+EXPORT_SYMBOL(vio_send_sid);
+
+int vio_ldc_alloc(struct vio_driver_state *vio,
+			 struct ldc_channel_config *base_cfg,
+			 void *event_arg)
+{
+	struct ldc_channel_config cfg = *base_cfg;
+	struct ldc_channel *lp;
+
+	cfg.tx_irq = vio->vdev->tx_irq;
+	cfg.rx_irq = vio->vdev->rx_irq;
+
+	lp = ldc_alloc(vio->vdev->channel_id, &cfg, event_arg);
+	if (IS_ERR(lp))
+		return PTR_ERR(lp);
+
+	vio->lp = lp;
+
+	return 0;
+}
+EXPORT_SYMBOL(vio_ldc_alloc);
+
+void vio_ldc_free(struct vio_driver_state *vio)
+{
+	ldc_free(vio->lp);
+	vio->lp = NULL;
+
+	kfree(vio->desc_buf);
+	vio->desc_buf = NULL;
+	vio->desc_buf_len = 0;
+}
+EXPORT_SYMBOL(vio_ldc_free);
+
+void vio_port_up(struct vio_driver_state *vio)
+{
+	unsigned long flags;
+	int err, state;
+
+	spin_lock_irqsave(&vio->lock, flags);
+
+	state = ldc_state(vio->lp);
+
+	err = 0;
+	if (state == LDC_STATE_INIT) {
+		err = ldc_bind(vio->lp, vio->name);
+		if (err)
+			printk(KERN_WARNING "%s: Port %lu bind failed, "
+			       "err=%d\n",
+			       vio->name, vio->vdev->channel_id, err);
+	}
+
+	if (!err) {
+		err = ldc_connect(vio->lp);
+		if (err)
+			printk(KERN_WARNING "%s: Port %lu connect failed, "
+			       "err=%d\n",
+			       vio->name, vio->vdev->channel_id, err);
+	}
+	if (err) {
+		unsigned long expires = jiffies + HZ;
+
+		expires = round_jiffies(expires);
+		mod_timer(&vio->timer, expires);
+	}
+
+	spin_unlock_irqrestore(&vio->lock, flags);
+}
+EXPORT_SYMBOL(vio_port_up);
+
+static void vio_port_timer(unsigned long _arg)
+{
+	struct vio_driver_state *vio = (struct vio_driver_state *) _arg;
+
+	vio_port_up(vio);
+}
+
+int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
+		    u8 dev_class, struct vio_version *ver_table,
+		    int ver_table_size, struct vio_driver_ops *ops,
+		    char *name)
+{
+	switch (dev_class) {
+	case VDEV_NETWORK:
+	case VDEV_NETWORK_SWITCH:
+	case VDEV_DISK:
+	case VDEV_DISK_SERVER:
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if (!ops->send_attr ||
+	    !ops->handle_attr ||
+	    !ops->handshake_complete)
+		return -EINVAL;
+
+	if (!ver_table || ver_table_size < 0)
+		return -EINVAL;
+
+	if (!name)
+		return -EINVAL;
+
+	spin_lock_init(&vio->lock);
+
+	vio->name = name;
+
+	vio->dev_class = dev_class;
+	vio->vdev = vdev;
+
+	vio->ver_table = ver_table;
+	vio->ver_table_entries = ver_table_size;
+
+	vio->ops = ops;
+
+	setup_timer(&vio->timer, vio_port_timer, (unsigned long) vio);
+
+	return 0;
+}
+EXPORT_SYMBOL(vio_driver_init);
diff --git a/arch/sparc/kernel/visemul.c b/arch/sparc/kernel/visemul.c
new file mode 100644
index 000000000000..b956fd71c131
--- /dev/null
+++ b/arch/sparc/kernel/visemul.c
@@ -0,0 +1,890 @@
+/* visemul.c: Emulation of VIS instructions.
+ *
+ * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ */
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/thread_info.h>
+
+#include <asm/ptrace.h>
+#include <asm/pstate.h>
+#include <asm/system.h>
+#include <asm/fpumacro.h>
+#include <asm/uaccess.h>
+
+/* OPF field of various VIS instructions.  */
+
+/* 000111011 - four 16-bit packs  */
+#define FPACK16_OPF	0x03b
+
+/* 000111010 - two 32-bit packs  */
+#define FPACK32_OPF	0x03a
+
+/* 000111101 - four 16-bit packs  */
+#define FPACKFIX_OPF	0x03d
+
+/* 001001101 - four 16-bit expands  */
+#define FEXPAND_OPF	0x04d
+
+/* 001001011 - two 32-bit merges */
+#define FPMERGE_OPF	0x04b
+
+/* 000110001 - 8-by-16-bit partitoned product  */
+#define FMUL8x16_OPF	0x031
+
+/* 000110011 - 8-by-16-bit upper alpha partitioned product  */
+#define FMUL8x16AU_OPF	0x033
+
+/* 000110101 - 8-by-16-bit lower alpha partitioned product  */
+#define FMUL8x16AL_OPF	0x035
+
+/* 000110110 - upper 8-by-16-bit partitioned product  */
+#define FMUL8SUx16_OPF	0x036
+
+/* 000110111 - lower 8-by-16-bit partitioned product  */
+#define FMUL8ULx16_OPF	0x037
+
+/* 000111000 - upper 8-by-16-bit partitioned product  */
+#define FMULD8SUx16_OPF	0x038
+
+/* 000111001 - lower unsigned 8-by-16-bit partitioned product  */
+#define FMULD8ULx16_OPF	0x039
+
+/* 000101000 - four 16-bit compare; set rd if src1 > src2  */
+#define FCMPGT16_OPF	0x028
+
+/* 000101100 - two 32-bit compare; set rd if src1 > src2  */
+#define FCMPGT32_OPF	0x02c
+
+/* 000100000 - four 16-bit compare; set rd if src1 <= src2  */
+#define FCMPLE16_OPF	0x020
+
+/* 000100100 - two 32-bit compare; set rd if src1 <= src2  */
+#define FCMPLE32_OPF	0x024
+
+/* 000100010 - four 16-bit compare; set rd if src1 != src2  */
+#define FCMPNE16_OPF	0x022
+
+/* 000100110 - two 32-bit compare; set rd if src1 != src2  */
+#define FCMPNE32_OPF	0x026
+
+/* 000101010 - four 16-bit compare; set rd if src1 == src2  */
+#define FCMPEQ16_OPF	0x02a
+
+/* 000101110 - two 32-bit compare; set rd if src1 == src2  */
+#define FCMPEQ32_OPF	0x02e
+
+/* 000000000 - Eight 8-bit edge boundary processing  */
+#define EDGE8_OPF	0x000
+
+/* 000000001 - Eight 8-bit edge boundary processing, no CC */
+#define EDGE8N_OPF	0x001
+
+/* 000000010 - Eight 8-bit edge boundary processing, little-endian  */
+#define EDGE8L_OPF	0x002
+
+/* 000000011 - Eight 8-bit edge boundary processing, little-endian, no CC  */
+#define EDGE8LN_OPF	0x003
+
+/* 000000100 - Four 16-bit edge boundary processing  */
+#define EDGE16_OPF	0x004
+
+/* 000000101 - Four 16-bit edge boundary processing, no CC  */
+#define EDGE16N_OPF	0x005
+
+/* 000000110 - Four 16-bit edge boundary processing, little-endian  */
+#define EDGE16L_OPF	0x006
+
+/* 000000111 - Four 16-bit edge boundary processing, little-endian, no CC  */
+#define EDGE16LN_OPF	0x007
+
+/* 000001000 - Two 32-bit edge boundary processing  */
+#define EDGE32_OPF	0x008
+
+/* 000001001 - Two 32-bit edge boundary processing, no CC  */
+#define EDGE32N_OPF	0x009
+
+/* 000001010 - Two 32-bit edge boundary processing, little-endian  */
+#define EDGE32L_OPF	0x00a
+
+/* 000001011 - Two 32-bit edge boundary processing, little-endian, no CC  */
+#define EDGE32LN_OPF	0x00b
+
+/* 000111110 - distance between 8 8-bit components  */
+#define PDIST_OPF	0x03e
+
+/* 000010000 - convert 8-bit 3-D address to blocked byte address  */
+#define ARRAY8_OPF	0x010
+
+/* 000010010 - convert 16-bit 3-D address to blocked byte address  */
+#define ARRAY16_OPF	0x012
+
+/* 000010100 - convert 32-bit 3-D address to blocked byte address  */
+#define ARRAY32_OPF	0x014
+
+/* 000011001 - Set the GSR.MASK field in preparation for a BSHUFFLE  */
+#define BMASK_OPF	0x019
+
+/* 001001100 - Permute bytes as specified by GSR.MASK  */
+#define BSHUFFLE_OPF	0x04c
+
+#define VIS_OPF_SHIFT	5
+#define VIS_OPF_MASK	(0x1ff << VIS_OPF_SHIFT)
+
+#define RS1(INSN)	(((INSN) >> 14) & 0x1f)
+#define RS2(INSN)	(((INSN) >>  0) & 0x1f)
+#define RD(INSN)	(((INSN) >> 25) & 0x1f)
+
+static inline void maybe_flush_windows(unsigned int rs1, unsigned int rs2,
+				       unsigned int rd, int from_kernel)
+{
+	if (rs2 >= 16 || rs1 >= 16 || rd >= 16) {
+		if (from_kernel != 0)
+			__asm__ __volatile__("flushw");
+		else
+			flushw_user();
+	}
+}
+
+static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
+{
+	unsigned long value;
+	
+	if (reg < 16)
+		return (!reg ? 0 : regs->u_regs[reg]);
+	if (regs->tstate & TSTATE_PRIV) {
+		struct reg_window *win;
+		win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS);
+		value = win->locals[reg - 16];
+	} else if (test_thread_flag(TIF_32BIT)) {
+		struct reg_window32 __user *win32;
+		win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
+		get_user(value, &win32->locals[reg - 16]);
+	} else {
+		struct reg_window __user *win;
+		win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
+		get_user(value, &win->locals[reg - 16]);
+	}
+	return value;
+}
+
+static inline unsigned long __user *__fetch_reg_addr_user(unsigned int reg,
+							  struct pt_regs *regs)
+{
+	BUG_ON(reg < 16);
+	BUG_ON(regs->tstate & TSTATE_PRIV);
+
+	if (test_thread_flag(TIF_32BIT)) {
+		struct reg_window32 __user *win32;
+		win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
+		return (unsigned long __user *)&win32->locals[reg - 16];
+	} else {
+		struct reg_window __user *win;
+		win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
+		return &win->locals[reg - 16];
+	}
+}
+
+static inline unsigned long *__fetch_reg_addr_kern(unsigned int reg,
+						   struct pt_regs *regs)
+{
+	BUG_ON(reg >= 16);
+	BUG_ON(regs->tstate & TSTATE_PRIV);
+
+	return &regs->u_regs[reg];
+}
+
+static void store_reg(struct pt_regs *regs, unsigned long val, unsigned long rd)
+{
+	if (rd < 16) {
+		unsigned long *rd_kern = __fetch_reg_addr_kern(rd, regs);
+
+		*rd_kern = val;
+	} else {
+		unsigned long __user *rd_user = __fetch_reg_addr_user(rd, regs);
+
+		if (test_thread_flag(TIF_32BIT))
+			__put_user((u32)val, (u32 __user *)rd_user);
+		else
+			__put_user(val, rd_user);
+	}
+}
+
+static inline unsigned long fpd_regval(struct fpustate *f,
+				       unsigned int insn_regnum)
+{
+	insn_regnum = (((insn_regnum & 1) << 5) |
+		       (insn_regnum & 0x1e));
+
+	return *(unsigned long *) &f->regs[insn_regnum];
+}
+
+static inline unsigned long *fpd_regaddr(struct fpustate *f,
+					 unsigned int insn_regnum)
+{
+	insn_regnum = (((insn_regnum & 1) << 5) |
+		       (insn_regnum & 0x1e));
+
+	return (unsigned long *) &f->regs[insn_regnum];
+}
+
+static inline unsigned int fps_regval(struct fpustate *f,
+				      unsigned int insn_regnum)
+{
+	return f->regs[insn_regnum];
+}
+
+static inline unsigned int *fps_regaddr(struct fpustate *f,
+					unsigned int insn_regnum)
+{
+	return &f->regs[insn_regnum];
+}
+
+struct edge_tab {
+	u16 left, right;
+};
+static struct edge_tab edge8_tab[8] = {
+	{ 0xff, 0x80 },
+	{ 0x7f, 0xc0 },
+	{ 0x3f, 0xe0 },
+	{ 0x1f, 0xf0 },
+	{ 0x0f, 0xf8 },
+	{ 0x07, 0xfc },
+	{ 0x03, 0xfe },
+	{ 0x01, 0xff },
+};
+static struct edge_tab edge8_tab_l[8] = {
+	{ 0xff, 0x01 },
+	{ 0xfe, 0x03 },
+	{ 0xfc, 0x07 },
+	{ 0xf8, 0x0f },
+	{ 0xf0, 0x1f },
+	{ 0xe0, 0x3f },
+	{ 0xc0, 0x7f },
+	{ 0x80, 0xff },
+};
+static struct edge_tab edge16_tab[4] = {
+	{ 0xf, 0x8 },
+	{ 0x7, 0xc },
+	{ 0x3, 0xe },
+	{ 0x1, 0xf },
+};
+static struct edge_tab edge16_tab_l[4] = {
+	{ 0xf, 0x1 },
+	{ 0xe, 0x3 },
+	{ 0xc, 0x7 },
+	{ 0x8, 0xf },
+};
+static struct edge_tab edge32_tab[2] = {
+	{ 0x3, 0x2 },
+	{ 0x1, 0x3 },
+};
+static struct edge_tab edge32_tab_l[2] = {
+	{ 0x3, 0x1 },
+	{ 0x2, 0x3 },
+};
+
+static void edge(struct pt_regs *regs, unsigned int insn, unsigned int opf)
+{
+	unsigned long orig_rs1, rs1, orig_rs2, rs2, rd_val;
+	u16 left, right;
+
+	maybe_flush_windows(RS1(insn), RS2(insn), RD(insn), 0);
+	orig_rs1 = rs1 = fetch_reg(RS1(insn), regs);
+	orig_rs2 = rs2 = fetch_reg(RS2(insn), regs);
+
+	if (test_thread_flag(TIF_32BIT)) {
+		rs1 = rs1 & 0xffffffff;
+		rs2 = rs2 & 0xffffffff;
+	}
+	switch (opf) {
+	default:
+	case EDGE8_OPF:
+	case EDGE8N_OPF:
+		left = edge8_tab[rs1 & 0x7].left;
+		right = edge8_tab[rs2 & 0x7].right;
+		break;
+	case EDGE8L_OPF:
+	case EDGE8LN_OPF:
+		left = edge8_tab_l[rs1 & 0x7].left;
+		right = edge8_tab_l[rs2 & 0x7].right;
+		break;
+
+	case EDGE16_OPF:
+	case EDGE16N_OPF:
+		left = edge16_tab[(rs1 >> 1) & 0x3].left;
+		right = edge16_tab[(rs2 >> 1) & 0x3].right;
+		break;
+
+	case EDGE16L_OPF:
+	case EDGE16LN_OPF:
+		left = edge16_tab_l[(rs1 >> 1) & 0x3].left;
+		right = edge16_tab_l[(rs2 >> 1) & 0x3].right;
+		break;
+
+	case EDGE32_OPF:
+	case EDGE32N_OPF:
+		left = edge32_tab[(rs1 >> 2) & 0x1].left;
+		right = edge32_tab[(rs2 >> 2) & 0x1].right;
+		break;
+
+	case EDGE32L_OPF:
+	case EDGE32LN_OPF:
+		left = edge32_tab_l[(rs1 >> 2) & 0x1].left;
+		right = edge32_tab_l[(rs2 >> 2) & 0x1].right;
+		break;
+	};
+
+	if ((rs1 & ~0x7UL) == (rs2 & ~0x7UL))
+		rd_val = right & left;
+	else
+		rd_val = left;
+
+	store_reg(regs, rd_val, RD(insn));
+
+	switch (opf) {
+	case EDGE8_OPF:
+	case EDGE8L_OPF:
+	case EDGE16_OPF:
+	case EDGE16L_OPF:
+	case EDGE32_OPF:
+	case EDGE32L_OPF: {
+		unsigned long ccr, tstate;
+
+		__asm__ __volatile__("subcc	%1, %2, %%g0\n\t"
+				     "rd	%%ccr, %0"
+				     : "=r" (ccr)
+				     : "r" (orig_rs1), "r" (orig_rs2)
+				     : "cc");
+		tstate = regs->tstate & ~(TSTATE_XCC | TSTATE_ICC);
+		regs->tstate = tstate | (ccr << 32UL);
+	}
+	};
+}
+
+static void array(struct pt_regs *regs, unsigned int insn, unsigned int opf)
+{
+	unsigned long rs1, rs2, rd_val;
+	unsigned int bits, bits_mask;
+
+	maybe_flush_windows(RS1(insn), RS2(insn), RD(insn), 0);
+	rs1 = fetch_reg(RS1(insn), regs);
+	rs2 = fetch_reg(RS2(insn), regs);
+
+	bits = (rs2 > 5 ? 5 : rs2);
+	bits_mask = (1UL << bits) - 1UL;
+
+	rd_val = ((((rs1 >> 11) & 0x3) <<  0) |
+		  (((rs1 >> 33) & 0x3) <<  2) |
+		  (((rs1 >> 55) & 0x1) <<  4) |
+		  (((rs1 >> 13) & 0xf) <<  5) |
+		  (((rs1 >> 35) & 0xf) <<  9) |
+		  (((rs1 >> 56) & 0xf) << 13) |
+		  (((rs1 >> 17) & bits_mask) << 17) |
+		  (((rs1 >> 39) & bits_mask) << (17 + bits)) |
+		  (((rs1 >> 60) & 0xf)       << (17 + (2*bits))));
+
+	switch (opf) {
+	case ARRAY16_OPF:
+		rd_val <<= 1;
+		break;
+
+	case ARRAY32_OPF:
+		rd_val <<= 2;
+	};
+
+	store_reg(regs, rd_val, RD(insn));
+}
+
+static void bmask(struct pt_regs *regs, unsigned int insn)
+{
+	unsigned long rs1, rs2, rd_val, gsr;
+
+	maybe_flush_windows(RS1(insn), RS2(insn), RD(insn), 0);
+	rs1 = fetch_reg(RS1(insn), regs);
+	rs2 = fetch_reg(RS2(insn), regs);
+	rd_val = rs1 + rs2;
+
+	store_reg(regs, rd_val, RD(insn));
+
+	gsr = current_thread_info()->gsr[0] & 0xffffffff;
+	gsr |= rd_val << 32UL;
+	current_thread_info()->gsr[0] = gsr;
+}
+
+static void bshuffle(struct pt_regs *regs, unsigned int insn)
+{
+	struct fpustate *f = FPUSTATE;
+	unsigned long rs1, rs2, rd_val;
+	unsigned long bmask, i;
+
+	bmask = current_thread_info()->gsr[0] >> 32UL;
+
+	rs1 = fpd_regval(f, RS1(insn));
+	rs2 = fpd_regval(f, RS2(insn));
+
+	rd_val = 0UL;
+	for (i = 0; i < 8; i++) {
+		unsigned long which = (bmask >> (i * 4)) & 0xf;
+		unsigned long byte;
+
+		if (which < 8)
+			byte = (rs1 >> (which * 8)) & 0xff;
+		else
+			byte = (rs2 >> ((which-8)*8)) & 0xff;
+		rd_val |= (byte << (i * 8));
+	}
+
+	*fpd_regaddr(f, RD(insn)) = rd_val;
+}
+
+static void pdist(struct pt_regs *regs, unsigned int insn)
+{
+	struct fpustate *f = FPUSTATE;
+	unsigned long rs1, rs2, *rd, rd_val;
+	unsigned long i;
+
+	rs1 = fpd_regval(f, RS1(insn));
+	rs2 = fpd_regval(f, RS2(insn));
+	rd = fpd_regaddr(f, RD(insn));
+
+	rd_val = *rd;
+
+	for (i = 0; i < 8; i++) {
+		s16 s1, s2;
+
+		s1 = (rs1 >> (56 - (i * 8))) & 0xff;
+		s2 = (rs2 >> (56 - (i * 8))) & 0xff;
+
+		/* Absolute value of difference. */
+		s1 -= s2;
+		if (s1 < 0)
+			s1 = ~s1 + 1;
+
+		rd_val += s1;
+	}
+
+	*rd = rd_val;
+}
+
+static void pformat(struct pt_regs *regs, unsigned int insn, unsigned int opf)
+{
+	struct fpustate *f = FPUSTATE;
+	unsigned long rs1, rs2, gsr, scale, rd_val;
+
+	gsr = current_thread_info()->gsr[0];
+	scale = (gsr >> 3) & (opf == FPACK16_OPF ? 0xf : 0x1f);
+	switch (opf) {
+	case FPACK16_OPF: {
+		unsigned long byte;
+
+		rs2 = fpd_regval(f, RS2(insn));
+		rd_val = 0;
+		for (byte = 0; byte < 4; byte++) {
+			unsigned int val;
+			s16 src = (rs2 >> (byte * 16UL)) & 0xffffUL;
+			int scaled = src << scale;
+			int from_fixed = scaled >> 7;
+
+			val = ((from_fixed < 0) ?
+			       0 :
+			       (from_fixed > 255) ?
+			       255 : from_fixed);
+
+			rd_val |= (val << (8 * byte));
+		}
+		*fps_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+
+	case FPACK32_OPF: {
+		unsigned long word;
+
+		rs1 = fpd_regval(f, RS1(insn));
+		rs2 = fpd_regval(f, RS2(insn));
+		rd_val = (rs1 << 8) & ~(0x000000ff000000ffUL);
+		for (word = 0; word < 2; word++) {
+			unsigned long val;
+			s32 src = (rs2 >> (word * 32UL));
+			s64 scaled = src << scale;
+			s64 from_fixed = scaled >> 23;
+
+			val = ((from_fixed < 0) ?
+			       0 :
+			       (from_fixed > 255) ?
+			       255 : from_fixed);
+
+			rd_val |= (val << (32 * word));
+		}
+		*fpd_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+
+	case FPACKFIX_OPF: {
+		unsigned long word;
+
+		rs2 = fpd_regval(f, RS2(insn));
+
+		rd_val = 0;
+		for (word = 0; word < 2; word++) {
+			long val;
+			s32 src = (rs2 >> (word * 32UL));
+			s64 scaled = src << scale;
+			s64 from_fixed = scaled >> 16;
+
+			val = ((from_fixed < -32768) ?
+			       -32768 :
+			       (from_fixed > 32767) ?
+			       32767 : from_fixed);
+
+			rd_val |= ((val & 0xffff) << (word * 16));
+		}
+		*fps_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+
+	case FEXPAND_OPF: {
+		unsigned long byte;
+
+		rs2 = fps_regval(f, RS2(insn));
+
+		rd_val = 0;
+		for (byte = 0; byte < 4; byte++) {
+			unsigned long val;
+			u8 src = (rs2 >> (byte * 8)) & 0xff;
+
+			val = src << 4;
+
+			rd_val |= (val << (byte * 16));
+		}
+		*fpd_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+
+	case FPMERGE_OPF: {
+		rs1 = fps_regval(f, RS1(insn));
+		rs2 = fps_regval(f, RS2(insn));
+
+		rd_val = (((rs2 & 0x000000ff) <<  0) |
+			  ((rs1 & 0x000000ff) <<  8) |
+			  ((rs2 & 0x0000ff00) <<  8) |
+			  ((rs1 & 0x0000ff00) << 16) |
+			  ((rs2 & 0x00ff0000) << 16) |
+			  ((rs1 & 0x00ff0000) << 24) |
+			  ((rs2 & 0xff000000) << 24) |
+			  ((rs1 & 0xff000000) << 32));
+		*fpd_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+	};
+}
+
+static void pmul(struct pt_regs *regs, unsigned int insn, unsigned int opf)
+{
+	struct fpustate *f = FPUSTATE;
+	unsigned long rs1, rs2, rd_val;
+
+	switch (opf) {
+	case FMUL8x16_OPF: {
+		unsigned long byte;
+
+		rs1 = fps_regval(f, RS1(insn));
+		rs2 = fpd_regval(f, RS2(insn));
+
+		rd_val = 0;
+		for (byte = 0; byte < 4; byte++) {
+			u16 src1 = (rs1 >> (byte *  8)) & 0x00ff;
+			s16 src2 = (rs2 >> (byte * 16)) & 0xffff;
+			u32 prod = src1 * src2;
+			u16 scaled = ((prod & 0x00ffff00) >> 8);
+
+			/* Round up.  */
+			if (prod & 0x80)
+				scaled++;
+			rd_val |= ((scaled & 0xffffUL) << (byte * 16UL));
+		}
+
+		*fpd_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+
+	case FMUL8x16AU_OPF:
+	case FMUL8x16AL_OPF: {
+		unsigned long byte;
+		s16 src2;
+
+		rs1 = fps_regval(f, RS1(insn));
+		rs2 = fps_regval(f, RS2(insn));
+
+		rd_val = 0;
+		src2 = (rs2 >> (opf == FMUL8x16AU_OPF) ? 16 : 0);
+		for (byte = 0; byte < 4; byte++) {
+			u16 src1 = (rs1 >> (byte * 8)) & 0x00ff;
+			u32 prod = src1 * src2;
+			u16 scaled = ((prod & 0x00ffff00) >> 8);
+
+			/* Round up.  */
+			if (prod & 0x80)
+				scaled++;
+			rd_val |= ((scaled & 0xffffUL) << (byte * 16UL));
+		}
+
+		*fpd_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+
+	case FMUL8SUx16_OPF:
+	case FMUL8ULx16_OPF: {
+		unsigned long byte, ushift;
+
+		rs1 = fpd_regval(f, RS1(insn));
+		rs2 = fpd_regval(f, RS2(insn));
+
+		rd_val = 0;
+		ushift = (opf == FMUL8SUx16_OPF) ? 8 : 0;
+		for (byte = 0; byte < 4; byte++) {
+			u16 src1;
+			s16 src2;
+			u32 prod;
+			u16 scaled;
+
+			src1 = ((rs1 >> ((16 * byte) + ushift)) & 0x00ff);
+			src2 = ((rs2 >> (16 * byte)) & 0xffff);
+			prod = src1 * src2;
+			scaled = ((prod & 0x00ffff00) >> 8);
+
+			/* Round up.  */
+			if (prod & 0x80)
+				scaled++;
+			rd_val |= ((scaled & 0xffffUL) << (byte * 16UL));
+		}
+
+		*fpd_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+
+	case FMULD8SUx16_OPF:
+	case FMULD8ULx16_OPF: {
+		unsigned long byte, ushift;
+
+		rs1 = fps_regval(f, RS1(insn));
+		rs2 = fps_regval(f, RS2(insn));
+
+		rd_val = 0;
+		ushift = (opf == FMULD8SUx16_OPF) ? 8 : 0;
+		for (byte = 0; byte < 2; byte++) {
+			u16 src1;
+			s16 src2;
+			u32 prod;
+			u16 scaled;
+
+			src1 = ((rs1 >> ((16 * byte) + ushift)) & 0x00ff);
+			src2 = ((rs2 >> (16 * byte)) & 0xffff);
+			prod = src1 * src2;
+			scaled = ((prod & 0x00ffff00) >> 8);
+
+			/* Round up.  */
+			if (prod & 0x80)
+				scaled++;
+			rd_val |= ((scaled & 0xffffUL) <<
+				   ((byte * 32UL) + 7UL));
+		}
+		*fpd_regaddr(f, RD(insn)) = rd_val;
+		break;
+	}
+	};
+}
+
+static void pcmp(struct pt_regs *regs, unsigned int insn, unsigned int opf)
+{
+	struct fpustate *f = FPUSTATE;
+	unsigned long rs1, rs2, rd_val, i;
+
+	rs1 = fpd_regval(f, RS1(insn));
+	rs2 = fpd_regval(f, RS2(insn));
+
+	rd_val = 0;
+
+	switch (opf) {
+	case FCMPGT16_OPF:
+		for (i = 0; i < 4; i++) {
+			s16 a = (rs1 >> (i * 16)) & 0xffff;
+			s16 b = (rs2 >> (i * 16)) & 0xffff;
+
+			if (a > b)
+				rd_val |= 1 << i;
+		}
+		break;
+
+	case FCMPGT32_OPF:
+		for (i = 0; i < 2; i++) {
+			s32 a = (rs1 >> (i * 32)) & 0xffff;
+			s32 b = (rs2 >> (i * 32)) & 0xffff;
+
+			if (a > b)
+				rd_val |= 1 << i;
+		}
+		break;
+
+	case FCMPLE16_OPF:
+		for (i = 0; i < 4; i++) {
+			s16 a = (rs1 >> (i * 16)) & 0xffff;
+			s16 b = (rs2 >> (i * 16)) & 0xffff;
+
+			if (a <= b)
+				rd_val |= 1 << i;
+		}
+		break;
+
+	case FCMPLE32_OPF:
+		for (i = 0; i < 2; i++) {
+			s32 a = (rs1 >> (i * 32)) & 0xffff;
+			s32 b = (rs2 >> (i * 32)) & 0xffff;
+
+			if (a <= b)
+				rd_val |= 1 << i;
+		}
+		break;
+
+	case FCMPNE16_OPF:
+		for (i = 0; i < 4; i++) {
+			s16 a = (rs1 >> (i * 16)) & 0xffff;
+			s16 b = (rs2 >> (i * 16)) & 0xffff;
+
+			if (a != b)
+				rd_val |= 1 << i;
+		}
+		break;
+
+	case FCMPNE32_OPF:
+		for (i = 0; i < 2; i++) {
+			s32 a = (rs1 >> (i * 32)) & 0xffff;
+			s32 b = (rs2 >> (i * 32)) & 0xffff;
+
+			if (a != b)
+				rd_val |= 1 << i;
+		}
+		break;
+
+	case FCMPEQ16_OPF:
+		for (i = 0; i < 4; i++) {
+			s16 a = (rs1 >> (i * 16)) & 0xffff;
+			s16 b = (rs2 >> (i * 16)) & 0xffff;
+
+			if (a == b)
+				rd_val |= 1 << i;
+		}
+		break;
+
+	case FCMPEQ32_OPF:
+		for (i = 0; i < 2; i++) {
+			s32 a = (rs1 >> (i * 32)) & 0xffff;
+			s32 b = (rs2 >> (i * 32)) & 0xffff;
+
+			if (a == b)
+				rd_val |= 1 << i;
+		}
+		break;
+	};
+
+	maybe_flush_windows(0, 0, RD(insn), 0);
+	store_reg(regs, rd_val, RD(insn));
+}
+
+/* Emulate the VIS instructions which are not implemented in
+ * hardware on Niagara.
+ */
+int vis_emul(struct pt_regs *regs, unsigned int insn)
+{
+	unsigned long pc = regs->tpc;
+	unsigned int opf;
+
+	BUG_ON(regs->tstate & TSTATE_PRIV);
+
+	if (test_thread_flag(TIF_32BIT))
+		pc = (u32)pc;
+
+	if (get_user(insn, (u32 __user *) pc))
+		return -EFAULT;
+
+	save_and_clear_fpu();
+
+	opf = (insn & VIS_OPF_MASK) >> VIS_OPF_SHIFT;
+	switch (opf) {
+	default:
+		return -EINVAL;
+
+	/* Pixel Formatting Instructions.  */
+	case FPACK16_OPF:
+	case FPACK32_OPF:
+	case FPACKFIX_OPF:
+	case FEXPAND_OPF:
+	case FPMERGE_OPF:
+		pformat(regs, insn, opf);
+		break;
+
+	/* Partitioned Multiply Instructions  */
+	case FMUL8x16_OPF:
+	case FMUL8x16AU_OPF:
+	case FMUL8x16AL_OPF:
+	case FMUL8SUx16_OPF:
+	case FMUL8ULx16_OPF:
+	case FMULD8SUx16_OPF:
+	case FMULD8ULx16_OPF:
+		pmul(regs, insn, opf);
+		break;
+
+	/* Pixel Compare Instructions  */
+	case FCMPGT16_OPF:
+	case FCMPGT32_OPF:
+	case FCMPLE16_OPF:
+	case FCMPLE32_OPF:
+	case FCMPNE16_OPF:
+	case FCMPNE32_OPF:
+	case FCMPEQ16_OPF:
+	case FCMPEQ32_OPF:
+		pcmp(regs, insn, opf);
+		break;
+
+	/* Edge Handling Instructions  */
+	case EDGE8_OPF:
+	case EDGE8N_OPF:
+	case EDGE8L_OPF:
+	case EDGE8LN_OPF:
+	case EDGE16_OPF:
+	case EDGE16N_OPF:
+	case EDGE16L_OPF:
+	case EDGE16LN_OPF:
+	case EDGE32_OPF:
+	case EDGE32N_OPF:
+	case EDGE32L_OPF:
+	case EDGE32LN_OPF:
+		edge(regs, insn, opf);
+		break;
+
+	/* Pixel Component Distance  */
+	case PDIST_OPF:
+		pdist(regs, insn);
+		break;
+
+	/* Three-Dimensional Array Addressing Instructions  */
+	case ARRAY8_OPF:
+	case ARRAY16_OPF:
+	case ARRAY32_OPF:
+		array(regs, insn, opf);
+		break;
+
+	/* Byte Mask and Shuffle Instructions  */
+	case BMASK_OPF:
+		bmask(regs, insn);
+		break;
+
+	case BSHUFFLE_OPF:
+		bshuffle(regs, insn);
+		break;
+	};
+
+	regs->tpc = regs->tnpc;
+	regs->tnpc += 4;
+	return 0;
+}
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 5b7e69a8c32f..76267085b13b 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -1,27 +1,56 @@
-/* ld script to make SparcLinux kernel */
+/* ld script for sparc32/sparc64 kernel */
 
 #include <asm-generic/vmlinux.lds.h>
+
 #include <asm/page.h>
+#include <asm/thread_info.h>
+
+#ifdef CONFIG_SPARC32
+#define INITIAL_ADDRESS  0x10000 + SIZEOF_HEADERS
+#define TEXTSTART	0xf0004000
+
+#define SMP_CACHE_BYTES_SHIFT 5
+
+#else
+#define SMP_CACHE_BYTES_SHIFT 6
+#define INITIAL_ADDRESS 0x4000
+#define TEXTSTART      0x0000000000404000
+
+#endif
+
+#define SMP_CACHE_BYTES (1 << SMP_CACHE_BYTES_SHIFT)
 
+#ifdef CONFIG_SPARC32
 OUTPUT_FORMAT("elf32-sparc", "elf32-sparc", "elf32-sparc")
 OUTPUT_ARCH(sparc)
 ENTRY(_start)
 jiffies = jiffies_64 + 4;
+#else
+/* sparc64 */
+OUTPUT_FORMAT("elf64-sparc", "elf64-sparc", "elf64-sparc")
+OUTPUT_ARCH(sparc:v9a)
+ENTRY(_start)
+jiffies = jiffies_64;
+#endif
+
 SECTIONS
 {
-	. = 0x10000 + SIZEOF_HEADERS;
-	.text 0xf0004000 :
+	/* swapper_low_pmd_dir is sparc64 only */
+	swapper_low_pmd_dir = 0x0000000000402000;
+	. = INITIAL_ADDRESS;
+	.text TEXTSTART :
 	{
 		_text = .;
 		*(.text.head)
 		TEXT_TEXT
 		SCHED_TEXT
 		LOCK_TEXT
+		KPROBES_TEXT
 		*(.gnu.warning)
 	} = 0
 	_etext = .;
-	PROVIDE (etext = .);
-	RODATA
+
+	RO_DATA(PAGE_SIZE)
 	.data :	{
 		DATA_DATA
 		CONSTRUCTORS
@@ -29,25 +58,38 @@ SECTIONS
 	.data1 : {
 		*(.data1)
 	}
+	. = ALIGN(SMP_CACHE_BYTES);
+	.data.cacheline_aligned : {
+		*(.data.cacheline_aligned)
+	}
+	. = ALIGN(SMP_CACHE_BYTES);
+	.data.read_mostly : {
+		*(.data.read_mostly)
+	}
+	/* End of data section */
 	_edata = .;
-	PROVIDE (edata = .);
 
+	/* init_task */
+	. = ALIGN(THREAD_SIZE);
+	.data.init_task : {
+		*(.data.init_task)
+	}
 	.fixup : {
 		__start___fixup = .;
 		*(.fixup)
 		__stop___fixup = .;
 	}
+	. = ALIGN(16);
 	__ex_table : {
 		__start___ex_table = .;
 		*(__ex_table)
 		__stop___ex_table = .;
 	}
-
 	NOTES
 
 	. = ALIGN(PAGE_SIZE);
-	__init_begin = .;
 	.init.text : {
+		__init_begin = .;
 		_sinittext = .;
 		INIT_TEXT
 		_einittext = .;
@@ -65,7 +107,7 @@ SECTIONS
 	.initcall.init : {
 		__initcall_start = .;
 		INITCALLS
-	__initcall_end = .;
+		__initcall_end = .;
 	}
 	.con_initcall.init : {
 		__con_initcall_start = .;
@@ -74,38 +116,61 @@ SECTIONS
 	}
 	SECURITY_INIT
 
+	. = ALIGN(4);
+	.tsb_ldquad_phys_patch : {
+		__tsb_ldquad_phys_patch = .;
+		*(.tsb_ldquad_phys_patch)
+		__tsb_ldquad_phys_patch_end = .;
+	}
+
+	.tsb_phys_patch : {
+		__tsb_phys_patch = .;
+		*(.tsb_phys_patch)
+		__tsb_phys_patch_end = .;
+	}
+
+	.cpuid_patch : {
+		__cpuid_patch = .;
+		*(.cpuid_patch)
+		__cpuid_patch_end = .;
+	}
+
+	.sun4v_1insn_patch : {
+		__sun4v_1insn_patch = .;
+		*(.sun4v_1insn_patch)
+		__sun4v_1insn_patch_end = .;
+	}
+	.sun4v_2insn_patch : {
+		__sun4v_2insn_patch = .;
+		*(.sun4v_2insn_patch)
+		__sun4v_2insn_patch_end = .;
+	}
+
 #ifdef CONFIG_BLK_DEV_INITRD
 	. = ALIGN(PAGE_SIZE);
 	.init.ramfs : {
-	__initramfs_start = .;
+		__initramfs_start = .;
 		*(.init.ramfs)
-	__initramfs_end = .;
+		__initramfs_end = .;
 	}
 #endif
 
 	PERCPU(PAGE_SIZE)
+
 	. = ALIGN(PAGE_SIZE);
 	__init_end = .;
-	. = ALIGN(32);
-	.data.cacheline_aligned : {
-		*(.data.cacheline_aligned)
-	}
-	. = ALIGN(32);
-	.data.read_mostly : {
-		*(.data.read_mostly)
-	}
-
 	__bss_start = .;
 	.sbss : {
 		*(.sbss)
-		*(.scommon) }
+		*(.scommon)
+	}
 	.bss : {
 		*(.dynbss)
 		*(.bss)
 		*(COMMON)
 	}
 	_end = . ;
-	PROVIDE (end = .);
+
 	/DISCARD/ : {
 		EXIT_TEXT
 		EXIT_DATA
diff --git a/arch/sparc/kernel/winfixup.S b/arch/sparc/kernel/winfixup.S
new file mode 100644
index 000000000000..a6b0863c27df
--- /dev/null
+++ b/arch/sparc/kernel/winfixup.S
@@ -0,0 +1,156 @@
+/* winfixup.S: Handle cases where user stack pointer is found to be bogus.
+ *
+ * Copyright (C) 1997, 2006 David S. Miller (davem@davemloft.net)
+ */
+
+#include <asm/asi.h>
+#include <asm/head.h>
+#include <asm/page.h>
+#include <asm/ptrace.h>
+#include <asm/processor.h>
+#include <asm/spitfire.h>
+#include <asm/thread_info.h>
+
+	.text
+
+	/* It used to be the case that these register window fault
+	 * handlers could run via the save and restore instructions
+	 * done by the trap entry and exit code.  They now do the
+	 * window spill/fill by hand, so that case no longer can occur.
+	 */
+
+	.align	32
+fill_fixup:
+	TRAP_LOAD_THREAD_REG(%g6, %g1)
+	rdpr	%tstate, %g1
+	and	%g1, TSTATE_CWP, %g1
+	or	%g4, FAULT_CODE_WINFIXUP, %g4
+	stb	%g4, [%g6 + TI_FAULT_CODE]
+	stx	%g5, [%g6 + TI_FAULT_ADDR]
+	wrpr	%g1, %cwp
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	call	do_sparc64_fault
+	 add	%sp, PTREGS_OFF, %o0
+	ba,pt	%xcc, rtrap
+	 nop
+
+	/* Be very careful about usage of the trap globals here.
+	 * You cannot touch %g5 as that has the fault information.
+	 */
+spill_fixup:
+spill_fixup_mna:
+spill_fixup_dax:
+	TRAP_LOAD_THREAD_REG(%g6, %g1)
+	ldx	[%g6 + TI_FLAGS], %g1
+	andcc	%g1, _TIF_32BIT, %g0
+	ldub	[%g6 + TI_WSAVED], %g1
+	sll	%g1, 3, %g3
+	add	%g6, %g3, %g3
+	stx	%sp, [%g3 + TI_RWIN_SPTRS]
+	sll	%g1, 7, %g3
+	bne,pt	%xcc, 1f
+	 add	%g6, %g3, %g3
+	stx	%l0, [%g3 + TI_REG_WINDOW + 0x00]
+	stx	%l1, [%g3 + TI_REG_WINDOW + 0x08]
+	stx	%l2, [%g3 + TI_REG_WINDOW + 0x10]
+	stx	%l3, [%g3 + TI_REG_WINDOW + 0x18]
+	stx	%l4, [%g3 + TI_REG_WINDOW + 0x20]
+	stx	%l5, [%g3 + TI_REG_WINDOW + 0x28]
+	stx	%l6, [%g3 + TI_REG_WINDOW + 0x30]
+	stx	%l7, [%g3 + TI_REG_WINDOW + 0x38]
+	stx	%i0, [%g3 + TI_REG_WINDOW + 0x40]
+	stx	%i1, [%g3 + TI_REG_WINDOW + 0x48]
+	stx	%i2, [%g3 + TI_REG_WINDOW + 0x50]
+	stx	%i3, [%g3 + TI_REG_WINDOW + 0x58]
+	stx	%i4, [%g3 + TI_REG_WINDOW + 0x60]
+	stx	%i5, [%g3 + TI_REG_WINDOW + 0x68]
+	stx	%i6, [%g3 + TI_REG_WINDOW + 0x70]
+	ba,pt	%xcc, 2f
+	 stx	%i7, [%g3 + TI_REG_WINDOW + 0x78]
+1:	stw	%l0, [%g3 + TI_REG_WINDOW + 0x00]
+	stw	%l1, [%g3 + TI_REG_WINDOW + 0x04]
+	stw	%l2, [%g3 + TI_REG_WINDOW + 0x08]
+	stw	%l3, [%g3 + TI_REG_WINDOW + 0x0c]
+	stw	%l4, [%g3 + TI_REG_WINDOW + 0x10]
+	stw	%l5, [%g3 + TI_REG_WINDOW + 0x14]
+	stw	%l6, [%g3 + TI_REG_WINDOW + 0x18]
+	stw	%l7, [%g3 + TI_REG_WINDOW + 0x1c]
+	stw	%i0, [%g3 + TI_REG_WINDOW + 0x20]
+	stw	%i1, [%g3 + TI_REG_WINDOW + 0x24]
+	stw	%i2, [%g3 + TI_REG_WINDOW + 0x28]
+	stw	%i3, [%g3 + TI_REG_WINDOW + 0x2c]
+	stw	%i4, [%g3 + TI_REG_WINDOW + 0x30]
+	stw	%i5, [%g3 + TI_REG_WINDOW + 0x34]
+	stw	%i6, [%g3 + TI_REG_WINDOW + 0x38]
+	stw	%i7, [%g3 + TI_REG_WINDOW + 0x3c]
+2:	add	%g1, 1, %g1
+	stb	%g1, [%g6 + TI_WSAVED]
+	rdpr	%tstate, %g1
+	andcc	%g1, TSTATE_PRIV, %g0
+	saved
+	be,pn	%xcc, 1f
+	 and	%g1, TSTATE_CWP, %g1
+	retry
+1:	mov	FAULT_CODE_WRITE | FAULT_CODE_DTLB | FAULT_CODE_WINFIXUP, %g4
+	stb	%g4, [%g6 + TI_FAULT_CODE]
+	stx	%g5, [%g6 + TI_FAULT_ADDR]
+	wrpr	%g1, %cwp
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	call	do_sparc64_fault
+	 add	%sp, PTREGS_OFF, %o0
+	ba,a,pt	%xcc, rtrap
+
+winfix_mna:
+	andn	%g3, 0x7f, %g3
+	add	%g3, 0x78, %g3
+	wrpr	%g3, %tnpc
+	done
+
+fill_fixup_mna:
+	rdpr	%tstate, %g1
+	and	%g1, TSTATE_CWP, %g1
+	wrpr	%g1, %cwp
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	sethi	%hi(tlb_type), %g1
+	lduw	[%g1 + %lo(tlb_type)], %g1
+	cmp	%g1, 3
+	bne,pt	%icc, 1f
+	 add	%sp, PTREGS_OFF, %o0
+	mov	%l4, %o2
+	call	sun4v_do_mna
+	 mov	%l5, %o1
+	ba,a,pt	%xcc, rtrap
+1:	mov	%l4, %o1
+	mov	%l5, %o2
+	call	mem_address_unaligned
+	 nop
+	ba,a,pt	%xcc, rtrap
+
+winfix_dax:
+	andn	%g3, 0x7f, %g3
+	add	%g3, 0x74, %g3
+	wrpr	%g3, %tnpc
+	done
+
+fill_fixup_dax:
+	rdpr	%tstate, %g1
+	and	%g1, TSTATE_CWP, %g1
+	wrpr	%g1, %cwp
+	ba,pt	%xcc, etrap
+	 rd	%pc, %g7
+	sethi	%hi(tlb_type), %g1
+	mov	%l4, %o1
+	lduw	[%g1 + %lo(tlb_type)], %g1
+	mov	%l5, %o2
+	cmp	%g1, 3
+	bne,pt	%icc, 1f
+	 add	%sp, PTREGS_OFF, %o0
+	call	sun4v_data_access_exception
+	 nop
+	ba,a,pt	%xcc, rtrap
+1:	call	spitfire_data_access_exception
+	 nop
+	ba,a,pt	%xcc, rtrap