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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 11:17:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 11:17:05 -0700
commit79c4581262e225a7c96d88b632b05ab3b5e9a52c (patch)
tree8ef030c74ab7e0d0df27cf86195f915efd2832f7 /arch/powerpc/platforms
parent59534f7298c5e28aaa64e6ed550e247f64ee72ae (diff)
parent99ec28f183daa450faa7bdad6f932364ae325648 (diff)
downloadblackbird-op-linux-79c4581262e225a7c96d88b632b05ab3b5e9a52c.tar.gz
blackbird-op-linux-79c4581262e225a7c96d88b632b05ab3b5e9a52c.zip
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (92 commits) powerpc: Remove unused 'protect4gb' boot parameter powerpc: Build-in e1000e for pseries & ppc64_defconfig powerpc/pseries: Make request_ras_irqs() available to other pseries code powerpc/numa: Use ibm,architecture-vec-5 to detect form 1 affinity powerpc/numa: Set a smaller value for RECLAIM_DISTANCE to enable zone reclaim powerpc: Use smt_snooze_delay=-1 to always busy loop powerpc: Remove check of ibm,smt-snooze-delay OF property powerpc/kdump: Fix race in kdump shutdown powerpc/kexec: Fix race in kexec shutdown powerpc/kexec: Speedup kexec hash PTE tear down powerpc/pseries: Add hcall to read 4 ptes at a time in real mode powerpc: Use more accurate limit for first segment memory allocations powerpc/kdump: Use chip->shutdown to disable IRQs powerpc/kdump: CPUs assume the context of the oopsing CPU powerpc/crashdump: Do not fail on NULL pointer dereferencing powerpc/eeh: Fix oops when probing in early boot powerpc/pci: Check devices status property when scanning OF tree powerpc/vio: Switch VIO Bus PM to use generic helpers powerpc: Avoid bad relocations in iSeries code powerpc: Use common cpu_die (fixes SMP+SUSPEND build) ...
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/44x/Kconfig20
-rw-r--r--arch/powerpc/platforms/44x/Makefile1
-rw-r--r--arch/powerpc/platforms/44x/iss4xx.c167
-rw-r--r--arch/powerpc/platforms/83xx/mpc831x_rdb.c1
-rw-r--r--arch/powerpc/platforms/83xx/mpc837x_rdb.c1
-rw-r--r--arch/powerpc/platforms/86xx/mpc8610_hpcd.c3
-rw-r--r--arch/powerpc/platforms/Kconfig.cputype5
-rw-r--r--arch/powerpc/platforms/cell/cbe_cpufreq.c2
-rw-r--r--arch/powerpc/platforms/iseries/exception.S4
-rw-r--r--arch/powerpc/platforms/iseries/pci.c10
-rw-r--r--arch/powerpc/platforms/iseries/smp.c2
-rw-r--r--arch/powerpc/platforms/pasemi/cpufreq.c2
-rw-r--r--arch/powerpc/platforms/powermac/cpufreq_64.c2
-rw-r--r--arch/powerpc/platforms/powermac/low_i2c.c7
-rw-r--r--arch/powerpc/platforms/powermac/pmac.h2
-rw-r--r--arch/powerpc/platforms/powermac/setup.c13
-rw-r--r--arch/powerpc/platforms/powermac/smp.c9
-rw-r--r--arch/powerpc/platforms/pseries/Makefile2
-rw-r--r--arch/powerpc/platforms/pseries/dlpar.c8
-rw-r--r--arch/powerpc/platforms/pseries/eeh.c2
-rw-r--r--arch/powerpc/platforms/pseries/event_sources.c79
-rw-r--r--arch/powerpc/platforms/pseries/hotplug-cpu.c67
-rw-r--r--arch/powerpc/platforms/pseries/hvCall.S38
-rw-r--r--arch/powerpc/platforms/pseries/lpar.c33
-rw-r--r--arch/powerpc/platforms/pseries/plpar_wrappers.h26
-rw-r--r--arch/powerpc/platforms/pseries/pseries.h7
-rw-r--r--arch/powerpc/platforms/pseries/ras.c62
-rw-r--r--arch/powerpc/platforms/pseries/setup.c10
-rw-r--r--arch/powerpc/platforms/pseries/smp.c42
-rw-r--r--arch/powerpc/platforms/pseries/xics.c38
30 files changed, 489 insertions, 176 deletions
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 7486bffd3ebb..eeba0a70e466 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -1,3 +1,12 @@
+config PPC_47x
+ bool "Support for 47x variant"
+ depends on 44x
+ default n
+ select MPIC
+ help
+ This option enables support for the 47x family of processors and is
+ not currently compatible with other 44x or 46x varients
+
config BAMBOO
bool "Bamboo"
depends on 44x
@@ -151,6 +160,17 @@ config YOSEMITE
help
This option enables support for the AMCC PPC440EP evaluation board.
+config ISS4xx
+ bool "ISS 4xx Simulator"
+ depends on (44x || 40x)
+ default n
+ select 405GP if 40x
+ select 440GP if 44x && !PPC_47x
+ select PPC_FPU
+ select OF_RTC
+ help
+ This option enables support for the IBM ISS simulation environment
+
#config LUAN
# bool "Luan"
# depends on 44x
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
index ee6185aeaa3b..82ff326e0795 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_SAM440EP) += sam440ep.o
obj-$(CONFIG_WARP) += warp.o
obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o
obj-$(CONFIG_XILINX_ML510) += virtex_ml510.o
+obj-$(CONFIG_ISS4xx) += iss4xx.o
diff --git a/arch/powerpc/platforms/44x/iss4xx.c b/arch/powerpc/platforms/44x/iss4xx.c
new file mode 100644
index 000000000000..aa46e9d1e771
--- /dev/null
+++ b/arch/powerpc/platforms/44x/iss4xx.c
@@ -0,0 +1,167 @@
+/*
+ * PPC476 board specific routines
+ *
+ * Copyright 2010 Torez Smith, IBM Corporation.
+ *
+ * Based on earlier code:
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ *
+ * 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/init.h>
+#include <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+#include <asm/mpic.h>
+#include <asm/mmu.h>
+
+static __initdata struct of_device_id iss4xx_of_bus[] = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,plb6", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ {},
+};
+
+static int __init iss4xx_device_probe(void)
+{
+ of_platform_bus_probe(NULL, iss4xx_of_bus, NULL);
+ of_instantiate_rtc();
+
+ return 0;
+}
+machine_device_initcall(iss4xx, iss4xx_device_probe);
+
+/* We can have either UICs or MPICs */
+static void __init iss4xx_init_irq(void)
+{
+ struct device_node *np;
+
+ /* Find top level interrupt controller */
+ for_each_node_with_property(np, "interrupt-controller") {
+ if (of_get_property(np, "interrupts", NULL) == NULL)
+ break;
+ }
+ if (np == NULL)
+ panic("Can't find top level interrupt controller");
+
+ /* Check type and do appropriate initialization */
+ if (of_device_is_compatible(np, "ibm,uic")) {
+ uic_init_tree();
+ ppc_md.get_irq = uic_get_irq;
+#ifdef CONFIG_MPIC
+ } else if (of_device_is_compatible(np, "chrp,open-pic")) {
+ /* The MPIC driver will get everything it needs from the
+ * device-tree, just pass 0 to all arguments
+ */
+ struct mpic *mpic = mpic_alloc(np, 0, MPIC_PRIMARY, 0, 0,
+ " MPIC ");
+ BUG_ON(mpic == NULL);
+ mpic_init(mpic);
+ ppc_md.get_irq = mpic_get_irq;
+#endif
+ } else
+ panic("Unrecognized top level interrupt controller");
+}
+
+#ifdef CONFIG_SMP
+static void __cpuinit smp_iss4xx_setup_cpu(int cpu)
+{
+ mpic_setup_this_cpu();
+}
+
+static void __cpuinit smp_iss4xx_kick_cpu(int cpu)
+{
+ struct device_node *cpunode = of_get_cpu_node(cpu, NULL);
+ const u64 *spin_table_addr_prop;
+ u32 *spin_table;
+ extern void start_secondary_47x(void);
+
+ BUG_ON(cpunode == NULL);
+
+ /* Assume spin table. We could test for the enable-method in
+ * the device-tree but currently there's little point as it's
+ * our only supported method
+ */
+ spin_table_addr_prop = of_get_property(cpunode, "cpu-release-addr",
+ NULL);
+ if (spin_table_addr_prop == NULL) {
+ pr_err("CPU%d: Can't start, missing cpu-release-addr !\n", cpu);
+ return;
+ }
+
+ /* Assume it's mapped as part of the linear mapping. This is a bit
+ * fishy but will work fine for now
+ */
+ spin_table = (u32 *)__va(*spin_table_addr_prop);
+ pr_debug("CPU%d: Spin table mapped at %p\n", cpu, spin_table);
+
+ spin_table[3] = cpu;
+ smp_wmb();
+ spin_table[1] = __pa(start_secondary_47x);
+ mb();
+}
+
+static struct smp_ops_t iss_smp_ops = {
+ .probe = smp_mpic_probe,
+ .message_pass = smp_mpic_message_pass,
+ .setup_cpu = smp_iss4xx_setup_cpu,
+ .kick_cpu = smp_iss4xx_kick_cpu,
+ .give_timebase = smp_generic_give_timebase,
+ .take_timebase = smp_generic_take_timebase,
+};
+
+static void __init iss4xx_smp_init(void)
+{
+ if (mmu_has_feature(MMU_FTR_TYPE_47x))
+ smp_ops = &iss_smp_ops;
+}
+
+#else /* CONFIG_SMP */
+static void __init iss4xx_smp_init(void) { }
+#endif /* CONFIG_SMP */
+
+static void __init iss4xx_setup_arch(void)
+{
+ iss4xx_smp_init();
+}
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init iss4xx_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+
+ if (!of_flat_dt_is_compatible(root, "ibm,iss-4xx"))
+ return 0;
+
+ return 1;
+}
+
+define_machine(iss4xx) {
+ .name = "ISS-4xx",
+ .probe = iss4xx_probe,
+ .progress = udbg_progress,
+ .init_IRQ = iss4xx_init_irq,
+ .setup_arch = iss4xx_setup_arch,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/83xx/mpc831x_rdb.c b/arch/powerpc/platforms/83xx/mpc831x_rdb.c
index 0b4f883b20eb..ae525e4745d2 100644
--- a/arch/powerpc/platforms/83xx/mpc831x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc831x_rdb.c
@@ -74,6 +74,7 @@ static int __init mpc831x_rdb_probe(void)
static struct of_device_id __initdata of_bus_ids[] = {
{ .compatible = "simple-bus" },
{ .compatible = "gianfar" },
+ { .compatible = "gpio-leds", },
{},
};
diff --git a/arch/powerpc/platforms/83xx/mpc837x_rdb.c b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
index a1908d261240..e00801c42540 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
@@ -72,6 +72,7 @@ static struct of_device_id mpc837x_ids[] = {
{ .compatible = "soc", },
{ .compatible = "simple-bus", },
{ .compatible = "gianfar", },
+ { .compatible = "gpio-leds", },
{},
};
diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
index 5abe137f6309..018cc67be426 100644
--- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
+++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
@@ -83,7 +83,8 @@ static struct of_device_id __initdata mpc8610_ids[] = {
{ .compatible = "fsl,mpc8610-immr", },
{ .compatible = "fsl,mpc8610-guts", },
{ .compatible = "simple-bus", },
- { .compatible = "gianfar", },
+ /* So that the DMA channel nodes can be probed individually: */
+ { .compatible = "fsl,eloplus-dma", },
{}
};
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index a8aae0b54579..d361f8119b1e 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -43,7 +43,7 @@ config 40x
select PPC_PCI_CHOICE
config 44x
- bool "AMCC 44x"
+ bool "AMCC 44x, 46x or 47x"
select PPC_DCR_NATIVE
select PPC_UDBG_16550
select 4xx_SOC
@@ -294,7 +294,7 @@ config PPC_PERF_CTRS
This enables the powerpc-specific perf_event back-end.
config SMP
- depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE
+ depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
bool "Symmetric multi-processing support"
---help---
This enables support for systems with more than one CPU. If you have
@@ -322,6 +322,7 @@ config NR_CPUS
config NOT_COHERENT_CACHE
bool
depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
+ default n if PPC_47x
default y
config CHECK_CACHE_COHERENCY
diff --git a/arch/powerpc/platforms/cell/cbe_cpufreq.c b/arch/powerpc/platforms/cell/cbe_cpufreq.c
index e6506cd0ff94..bfa2c0cb3d1e 100644
--- a/arch/powerpc/platforms/cell/cbe_cpufreq.c
+++ b/arch/powerpc/platforms/cell/cbe_cpufreq.c
@@ -118,7 +118,7 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy)
policy->cur = cbe_freqs[cur_pmode].frequency;
#ifdef CONFIG_SMP
- cpumask_copy(policy->cpus, &per_cpu(cpu_sibling_map, policy->cpu));
+ cpumask_copy(policy->cpus, cpu_sibling_mask(policy->cpu));
#endif
cpufreq_frequency_table_get_attr(cbe_freqs, policy->cpu);
diff --git a/arch/powerpc/platforms/iseries/exception.S b/arch/powerpc/platforms/iseries/exception.S
index fba5bf915073..32a56c6dfa72 100644
--- a/arch/powerpc/platforms/iseries/exception.S
+++ b/arch/powerpc/platforms/iseries/exception.S
@@ -252,8 +252,8 @@ decrementer_iSeries_masked:
li r11,1
ld r12,PACALPPACAPTR(r13)
stb r11,LPPACADECRINT(r12)
- LOAD_REG_IMMEDIATE(r12, tb_ticks_per_jiffy)
- lwz r12,0(r12)
+ li r12,-1
+ clrldi r12,r12,33 /* set DEC to 0x7fffffff */
mtspr SPRN_DEC,r12
/* fall through */
diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c
index b841c9a9db87..3fc2e6494b8b 100644
--- a/arch/powerpc/platforms/iseries/pci.c
+++ b/arch/powerpc/platforms/iseries/pci.c
@@ -32,6 +32,7 @@
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/of.h>
+#include <linux/ratelimit.h>
#include <asm/types.h>
#include <asm/io.h>
@@ -584,14 +585,9 @@ static inline struct device_node *xlate_iomm_address(
orig_addr = (unsigned long __force)addr;
if ((orig_addr < BASE_IO_MEMORY) || (orig_addr >= max_io_memory)) {
- static unsigned long last_jiffies;
- static int num_printed;
+ static DEFINE_RATELIMIT_STATE(ratelimit, 60 * HZ, 10);
- if (time_after(jiffies, last_jiffies + 60 * HZ)) {
- last_jiffies = jiffies;
- num_printed = 0;
- }
- if (num_printed++ < 10)
+ if (__ratelimit(&ratelimit))
printk(KERN_ERR
"iSeries_%s: invalid access at IO address %p\n",
func, addr);
diff --git a/arch/powerpc/platforms/iseries/smp.c b/arch/powerpc/platforms/iseries/smp.c
index 722335e32fd4..6590850045af 100644
--- a/arch/powerpc/platforms/iseries/smp.c
+++ b/arch/powerpc/platforms/iseries/smp.c
@@ -83,7 +83,7 @@ static void smp_iSeries_message_pass(int target, int msg)
static int smp_iSeries_probe(void)
{
- return cpus_weight(cpu_possible_map);
+ return cpumask_weight(cpu_possible_mask);
}
static void smp_iSeries_kick_cpu(int nr)
diff --git a/arch/powerpc/platforms/pasemi/cpufreq.c b/arch/powerpc/platforms/pasemi/cpufreq.c
index d35e0520abf0..c16537bc0c6e 100644
--- a/arch/powerpc/platforms/pasemi/cpufreq.c
+++ b/arch/powerpc/platforms/pasemi/cpufreq.c
@@ -213,7 +213,7 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
pr_debug("current astate is at %d\n",cur_astate);
policy->cur = pas_freqs[cur_astate].frequency;
- cpumask_copy(policy->cpus, &cpu_online_map);
+ cpumask_copy(policy->cpus, cpu_online_mask);
ppc_proc_freq = policy->cur * 1000ul;
diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c
index 3ca09d3ccce3..9650c6029c82 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_64.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_64.c
@@ -362,7 +362,7 @@ static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy)
/* secondary CPUs are tied to the primary one by the
* cpufreq core if in the secondary policy we tell it that
* it actually must be one policy together with all others. */
- cpumask_copy(policy->cpus, &cpu_online_map);
+ cpumask_copy(policy->cpus, cpu_online_mask);
cpufreq_frequency_table_get_attr(g5_cpu_freqs, policy->cpu);
return cpufreq_frequency_table_cpuinfo(policy,
diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c
index f45331ab97cb..06a137c5b8bb 100644
--- a/arch/powerpc/platforms/powermac/low_i2c.c
+++ b/arch/powerpc/platforms/powermac/low_i2c.c
@@ -592,7 +592,7 @@ static void __init kw_i2c_probe(void)
/* Probe keywest-i2c busses */
for_each_compatible_node(np, "i2c","keywest-i2c") {
struct pmac_i2c_host_kw *host;
- int multibus, chans, i;
+ int multibus;
/* Found one, init a host structure */
host = kw_i2c_host_init(np);
@@ -614,6 +614,8 @@ static void __init kw_i2c_probe(void)
* parent type
*/
if (multibus) {
+ int chans, i;
+
parent = of_get_parent(np);
if (parent == NULL)
continue;
@@ -1258,8 +1260,7 @@ static void pmac_i2c_do_end(struct pmf_function *func, void *instdata)
if (inst == NULL)
return;
pmac_i2c_close(inst->bus);
- if (inst)
- kfree(inst);
+ kfree(inst);
}
static int pmac_i2c_do_read(PMF_STD_ARGS, u32 len)
diff --git a/arch/powerpc/platforms/powermac/pmac.h b/arch/powerpc/platforms/powermac/pmac.h
index 3362e781b6a7..f0bc08f6c1f0 100644
--- a/arch/powerpc/platforms/powermac/pmac.h
+++ b/arch/powerpc/platforms/powermac/pmac.h
@@ -33,6 +33,8 @@ extern void pmac_setup_pci_dma(void);
extern void pmac_check_ht_link(void);
extern void pmac_setup_smp(void);
+extern void pmac32_cpu_die(void);
+extern void low_cpu_die(void) __attribute__((noreturn));
extern int pmac_nvram_init(void);
extern void pmac_pic_init(void);
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 15c2241f9c72..f1d0132ebcc7 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -480,7 +480,7 @@ static void __init pmac_init_early(void)
#endif
/* SMP Init has to be done early as we need to patch up
- * cpu_possible_map before interrupt stacks are allocated
+ * cpu_possible_mask before interrupt stacks are allocated
* or kaboom...
*/
#ifdef CONFIG_SMP
@@ -646,7 +646,7 @@ static int pmac_pci_probe_mode(struct pci_bus *bus)
/* access per cpu vars from generic smp.c */
DECLARE_PER_CPU(int, cpu_state);
-static void pmac_cpu_die(void)
+static void pmac64_cpu_die(void)
{
/*
* turn off as much as possible, we'll be
@@ -717,8 +717,13 @@ define_machine(powermac) {
.pcibios_after_init = pmac_pcibios_after_init,
.phys_mem_access_prot = pci_phys_mem_access_prot,
#endif
-#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
- .cpu_die = pmac_cpu_die,
+#ifdef CONFIG_HOTPLUG_CPU
+#ifdef CONFIG_PPC64
+ .cpu_die = pmac64_cpu_die,
+#endif
+#ifdef CONFIG_PPC32
+ .cpu_die = pmac32_cpu_die,
+#endif
#endif
#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC32)
.cpu_die = generic_mach_cpu_die,
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index 6898e8241cd0..c95215f4f8b6 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -53,6 +53,8 @@
#include <asm/pmac_low_i2c.h>
#include <asm/pmac_pfunc.h>
+#include "pmac.h"
+
#undef DEBUG
#ifdef DEBUG
@@ -315,7 +317,7 @@ static int __init smp_psurge_probe(void)
/* This is necessary because OF doesn't know about the
* secondary cpu(s), and thus there aren't nodes in the
* device tree for them, and smp_setup_cpu_maps hasn't
- * set their bits in cpu_present_map.
+ * set their bits in cpu_present_mask.
*/
if (ncpus > NR_CPUS)
ncpus = NR_CPUS;
@@ -878,10 +880,9 @@ int smp_core99_cpu_disable(void)
return 0;
}
-extern void low_cpu_die(void) __attribute__((noreturn)); /* in sleep.S */
static int cpu_dead[NR_CPUS];
-void cpu_die(void)
+void pmac32_cpu_die(void)
{
local_irq_disable();
cpu_dead[smp_processor_id()] = 1;
@@ -944,7 +945,7 @@ void __init pmac_setup_smp(void)
}
#ifdef CONFIG_PPC32
else {
- /* We have to set bits in cpu_possible_map here since the
+ /* We have to set bits in cpu_possible_mask here since the
* secondary CPU(s) aren't in the device tree. Various
* things won't be initialized for CPUs not in the possible
* map, so we really need to fix it up here.
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index 0ff5174ae4f5..3dbef309bc8d 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -7,7 +7,7 @@ EXTRA_CFLAGS += -DDEBUG
endif
obj-y := lpar.o hvCall.o nvram.o reconfig.o \
- setup.o iommu.o ras.o \
+ setup.o iommu.o event_sources.o ras.o \
firmware.o power.o dlpar.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_XICS) += xics.o
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index e1682bc168a3..d71e58584086 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -79,13 +79,12 @@ static struct device_node *dlpar_parse_cc_node(struct cc_workarea *ccwa)
* prepend this to the full_name.
*/
name = (char *)ccwa + ccwa->name_offset;
- dn->full_name = kmalloc(strlen(name) + 2, GFP_KERNEL);
+ dn->full_name = kasprintf(GFP_KERNEL, "/%s", name);
if (!dn->full_name) {
kfree(dn);
return NULL;
}
- sprintf(dn->full_name, "/%s", name);
return dn;
}
@@ -410,15 +409,13 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count)
* directory of the device tree. CPUs actually live in the
* cpus directory so we need to fixup the full_name.
*/
- cpu_name = kzalloc(strlen(dn->full_name) + strlen("/cpus") + 1,
- GFP_KERNEL);
+ cpu_name = kasprintf(GFP_KERNEL, "/cpus%s", dn->full_name);
if (!cpu_name) {
dlpar_free_cc_nodes(dn);
rc = -ENOMEM;
goto out;
}
- sprintf(cpu_name, "/cpus%s", dn->full_name);
kfree(dn->full_name);
dn->full_name = cpu_name;
@@ -433,6 +430,7 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count)
if (rc) {
dlpar_release_drc(drc_index);
dlpar_free_cc_nodes(dn);
+ goto out;
}
rc = dlpar_online_cpu(dn);
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 7df7fbb7cacb..34b7dc12e731 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -749,7 +749,7 @@ static void __rtas_set_slot_reset(struct pci_dn *pdn)
/* Determine type of EEH reset required by device,
* default hot reset or fundamental reset
*/
- if (dev->needs_freset)
+ if (dev && dev->needs_freset)
rtas_pci_slot_reset(pdn, 3);
else
rtas_pci_slot_reset(pdn, 1);
diff --git a/arch/powerpc/platforms/pseries/event_sources.c b/arch/powerpc/platforms/pseries/event_sources.c
new file mode 100644
index 000000000000..e889c9d9586a
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/event_sources.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2001 Dave Engebretsen IBM Corporation
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <asm/prom.h>
+
+#include "pseries.h"
+
+void request_event_sources_irqs(struct device_node *np,
+ irq_handler_t handler,
+ const char *name)
+{
+ int i, index, count = 0;
+ struct of_irq oirq;
+ const u32 *opicprop;
+ unsigned int opicplen;
+ unsigned int virqs[16];
+
+ /* Check for obsolete "open-pic-interrupt" property. If present, then
+ * map those interrupts using the default interrupt host and default
+ * trigger
+ */
+ opicprop = of_get_property(np, "open-pic-interrupt", &opicplen);
+ if (opicprop) {
+ opicplen /= sizeof(u32);
+ for (i = 0; i < opicplen; i++) {
+ if (count > 15)
+ break;
+ virqs[count] = irq_create_mapping(NULL, *(opicprop++));
+ if (virqs[count] == NO_IRQ)
+ printk(KERN_ERR "Unable to allocate interrupt "
+ "number for %s\n", np->full_name);
+ else
+ count++;
+
+ }
+ }
+ /* Else use normal interrupt tree parsing */
+ else {
+ /* First try to do a proper OF tree parsing */
+ for (index = 0; of_irq_map_one(np, index, &oirq) == 0;
+ index++) {
+ if (count > 15)
+ break;
+ virqs[count] = irq_create_of_mapping(oirq.controller,
+ oirq.specifier,
+ oirq.size);
+ if (virqs[count] == NO_IRQ)
+ printk(KERN_ERR "Unable to allocate interrupt "
+ "number for %s\n", np->full_name);
+ else
+ count++;
+ }
+ }
+
+ /* Now request them */
+ for (i = 0; i < count; i++) {
+ if (request_irq(virqs[i], handler, 0, name, NULL)) {
+ printk(KERN_ERR "Unable to request interrupt %d for "
+ "%s\n", virqs[i], np->full_name);
+ return;
+ }
+ }
+}
+
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index a8e1d5d17a28..8f85f399ab9f 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -154,30 +154,6 @@ static void pseries_mach_cpu_die(void)
for(;;);
}
-static int qcss_tok; /* query-cpu-stopped-state token */
-
-/* Get state of physical CPU.
- * Return codes:
- * 0 - The processor is in the RTAS stopped state
- * 1 - stop-self is in progress
- * 2 - The processor is not in the RTAS stopped state
- * -1 - Hardware Error
- * -2 - Hardware Busy, Try again later.
- */
-static int query_cpu_stopped(unsigned int pcpu)
-{
- int cpu_status, status;
-
- status = rtas_call(qcss_tok, 1, 2, &cpu_status, pcpu);
- if (status != 0) {
- printk(KERN_ERR
- "RTAS query-cpu-stopped-state failed: %i\n", status);
- return status;
- }
-
- return cpu_status;
-}
-
static int pseries_cpu_disable(void)
{
int cpu = smp_processor_id();
@@ -187,7 +163,7 @@ static int pseries_cpu_disable(void)
/*fix boot_cpuid here*/
if (cpu == boot_cpuid)
- boot_cpuid = any_online_cpu(cpu_online_map);
+ boot_cpuid = cpumask_any(cpu_online_mask);
/* FIXME: abstract this to not be platform specific later on */
xics_migrate_irqs_away();
@@ -224,8 +200,9 @@ static void pseries_cpu_die(unsigned int cpu)
} else if (get_preferred_offline_state(cpu) == CPU_STATE_OFFLINE) {
for (tries = 0; tries < 25; tries++) {
- cpu_status = query_cpu_stopped(pcpu);
- if (cpu_status == 0 || cpu_status == -1)
+ cpu_status = smp_query_cpu_stopped(pcpu);
+ if (cpu_status == QCSS_STOPPED ||
+ cpu_status == QCSS_HARDWARE_ERROR)
break;
cpu_relax();
}
@@ -245,7 +222,7 @@ static void pseries_cpu_die(unsigned int cpu)
}
/*
- * Update cpu_present_map and paca(s) for a new cpu node. The wrinkle
+ * Update cpu_present_mask and paca(s) for a new cpu node. The wrinkle
* here is that a cpu device node may represent up to two logical cpus
* in the SMT case. We must honor the assumption in other code that
* the logical ids for sibling SMT threads x and y are adjacent, such
@@ -254,7 +231,7 @@ static void pseries_cpu_die(unsigned int cpu)
static int pseries_add_processor(struct device_node *np)
{
unsigned int cpu;
- cpumask_t candidate_map, tmp = CPU_MASK_NONE;
+ cpumask_var_t candidate_mask, tmp;
int err = -ENOSPC, len, nthreads, i;
const u32 *intserv;
@@ -262,48 +239,53 @@ static int pseries_add_processor(struct device_node *np)
if (!intserv)
return 0;
+ zalloc_cpumask_var(&candidate_mask, GFP_KERNEL);
+ zalloc_cpumask_var(&tmp, GFP_KERNEL);
+
nthreads = len / sizeof(u32);
for (i = 0; i < nthreads; i++)
- cpu_set(i, tmp);
+ cpumask_set_cpu(i, tmp);
cpu_maps_update_begin();
- BUG_ON(!cpus_subset(cpu_present_map, cpu_possible_map));
+ BUG_ON(!cpumask_subset(cpu_present_mask, cpu_possible_mask));
/* Get a bitmap of unoccupied slots. */
- cpus_xor(candidate_map, cpu_possible_map, cpu_present_map);
- if (cpus_empty(candidate_map)) {
+ cpumask_xor(candidate_mask, cpu_possible_mask, cpu_present_mask);
+ if (cpumask_empty(candidate_mask)) {
/* If we get here, it most likely means that NR_CPUS is
* less than the partition's max processors setting.
*/
printk(KERN_ERR "Cannot add cpu %s; this system configuration"
" supports %d logical cpus.\n", np->full_name,
- cpus_weight(cpu_possible_map));
+ cpumask_weight(cpu_possible_mask));
goto out_unlock;
}
- while (!cpus_empty(tmp))
- if (cpus_subset(tmp, candidate_map))
+ while (!cpumask_empty(tmp))
+ if (cpumask_subset(tmp, candidate_mask))
/* Found a range where we can insert the new cpu(s) */
break;
else
- cpus_shift_left(tmp, tmp, nthreads);
+ cpumask_shift_left(tmp, tmp, nthreads);
- if (cpus_empty(tmp)) {
- printk(KERN_ERR "Unable to find space in cpu_present_map for"
+ if (cpumask_empty(tmp)) {
+ printk(KERN_ERR "Unable to find space in cpu_present_mask for"
" processor %s with %d thread(s)\n", np->name,
nthreads);
goto out_unlock;
}
- for_each_cpu_mask(cpu, tmp) {
- BUG_ON(cpu_isset(cpu, cpu_present_map));
+ for_each_cpu(cpu, tmp) {
+ BUG_ON(cpumask_test_cpu(cpu, cpu_present_mask));
set_cpu_present(cpu, true);
set_hard_smp_processor_id(cpu, *intserv++);
}
err = 0;
out_unlock:
cpu_maps_update_done();
+ free_cpumask_var(candidate_mask);
+ free_cpumask_var(tmp);
return err;
}
@@ -334,7 +316,7 @@ static void pseries_remove_processor(struct device_node *np)
set_hard_smp_processor_id(cpu, -1);
break;
}
- if (cpu == NR_CPUS)
+ if (cpu >= nr_cpu_ids)
printk(KERN_WARNING "Could not find cpu to remove "
"with physical id 0x%x\n", intserv[i]);
}
@@ -388,6 +370,7 @@ static int __init pseries_cpu_hotplug_init(void)
struct device_node *np;
const char *typep;
int cpu;
+ int qcss_tok;
for_each_node_by_name(np, "interrupt-controller") {
typep = of_get_property(np, "compatible", NULL);
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index 383a5d0e9818..48d20573e4de 100644
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -228,3 +228,41 @@ _GLOBAL(plpar_hcall9)
mtcrf 0xff,r0
blr /* return r3 = status */
+
+/* See plpar_hcall_raw to see why this is needed */
+_GLOBAL(plpar_hcall9_raw)
+ HMT_MEDIUM
+
+ mfcr r0
+ stw r0,8(r1)
+
+ std r4,STK_PARM(r4)(r1) /* Save ret buffer */
+
+ mr r4,r5
+ mr r5,r6
+ mr r6,r7
+ mr r7,r8
+ mr r8,r9
+ mr r9,r10
+ ld r10,STK_PARM(r11)(r1) /* put arg7 in R10 */
+ ld r11,STK_PARM(r12)(r1) /* put arg8 in R11 */
+ ld r12,STK_PARM(r13)(r1) /* put arg9 in R12 */
+
+ HVSC /* invoke the hypervisor */
+
+ mr r0,r12
+ ld r12,STK_PARM(r4)(r1)
+ std r4, 0(r12)
+ std r5, 8(r12)
+ std r6, 16(r12)
+ std r7, 24(r12)
+ std r8, 32(r12)
+ std r9, 40(r12)
+ std r10,48(r12)
+ std r11,56(r12)
+ std r0, 64(r12)
+
+ lwz r0,8(r1)
+ mtcrf 0xff,r0
+
+ blr /* return r3 = status */
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 0707653612ba..cf79b46d8f88 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -367,21 +367,28 @@ static void pSeries_lpar_hptab_clear(void)
{
unsigned long size_bytes = 1UL << ppc64_pft_size;
unsigned long hpte_count = size_bytes >> 4;
- unsigned long dummy1, dummy2, dword0;
+ struct {
+ unsigned long pteh;
+ unsigned long ptel;
+ } ptes[4];
long lpar_rc;
- int i;
+ int i, j;
- /* TODO: Use bulk call */
- for (i = 0; i < hpte_count; i++) {
- /* dont remove HPTEs with VRMA mappings */
- lpar_rc = plpar_pte_remove_raw(H_ANDCOND, i, HPTE_V_1TB_SEG,
- &dummy1, &dummy2);
- if (lpar_rc == H_NOT_FOUND) {
- lpar_rc = plpar_pte_read_raw(0, i, &dword0, &dummy1);
- if (!lpar_rc && ((dword0 & HPTE_V_VRMA_MASK)
- != HPTE_V_VRMA_MASK))
- /* Can be hpte for 1TB Seg. So remove it */
- plpar_pte_remove_raw(0, i, 0, &dummy1, &dummy2);
+ /* Read in batches of 4,
+ * invalidate only valid entries not in the VRMA
+ * hpte_count will be a multiple of 4
+ */
+ for (i = 0; i < hpte_count; i += 4) {
+ lpar_rc = plpar_pte_read_4_raw(0, i, (void *)ptes);
+ if (lpar_rc != H_SUCCESS)
+ continue;
+ for (j = 0; j < 4; j++){
+ if ((ptes[j].pteh & HPTE_V_VRMA_MASK) ==
+ HPTE_V_VRMA_MASK)
+ continue;
+ if (ptes[j].pteh & HPTE_V_VALID)
+ plpar_pte_remove_raw(0, i + j, 0,
+ &(ptes[j].pteh), &(ptes[j].ptel));
}
}
}
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index a05f8d427856..d9801117124b 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -4,6 +4,14 @@
#include <asm/hvcall.h>
#include <asm/page.h>
+/* Get state of physical CPU from query_cpu_stopped */
+int smp_query_cpu_stopped(unsigned int pcpu);
+#define QCSS_STOPPED 0
+#define QCSS_STOPPING 1
+#define QCSS_NOT_STOPPED 2
+#define QCSS_HARDWARE_ERROR -1
+#define QCSS_HARDWARE_BUSY -2
+
static inline long poll_pending(void)
{
return plpar_hcall_norets(H_POLL_PENDING);
@@ -183,6 +191,24 @@ static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex,
return rc;
}
+/*
+ * plpar_pte_read_4_raw can be called in real mode.
+ * ptes must be 8*sizeof(unsigned long)
+ */
+static inline long plpar_pte_read_4_raw(unsigned long flags, unsigned long ptex,
+ unsigned long *ptes)
+
+{
+ long rc;
+ unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
+
+ rc = plpar_hcall9_raw(H_READ, retbuf, flags | H_READ_4, ptex);
+
+ memcpy(ptes, retbuf, 8*sizeof(unsigned long));
+
+ return rc;
+}
+
static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
unsigned long avpn)
{
diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h
index 9e17c0d2a0c8..40c93cad91d2 100644
--- a/arch/powerpc/platforms/pseries/pseries.h
+++ b/arch/powerpc/platforms/pseries/pseries.h
@@ -10,6 +10,13 @@
#ifndef _PSERIES_PSERIES_H
#define _PSERIES_PSERIES_H
+#include <linux/interrupt.h>
+
+struct device_node;
+
+extern void request_event_sources_irqs(struct device_node *np,
+ irq_handler_t handler, const char *name);
+
extern void __init fw_feature_init(const char *hypertas, unsigned long len);
struct pt_regs;
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index db940d2c39a0..41a3e9a039ed 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c
@@ -67,63 +67,6 @@ static irqreturn_t ras_epow_interrupt(int irq, void *dev_id);
static irqreturn_t ras_error_interrupt(int irq, void *dev_id);
-static void request_ras_irqs(struct device_node *np,
- irq_handler_t handler,
- const char *name)
-{
- int i, index, count = 0;
- struct of_irq oirq;
- const u32 *opicprop;
- unsigned int opicplen;
- unsigned int virqs[16];
-
- /* Check for obsolete "open-pic-interrupt" property. If present, then
- * map those interrupts using the default interrupt host and default
- * trigger
- */
- opicprop = of_get_property(np, "open-pic-interrupt", &opicplen);
- if (opicprop) {
- opicplen /= sizeof(u32);
- for (i = 0; i < opicplen; i++) {
- if (count > 15)
- break;
- virqs[count] = irq_create_mapping(NULL, *(opicprop++));
- if (virqs[count] == NO_IRQ)
- printk(KERN_ERR "Unable to allocate interrupt "
- "number for %s\n", np->full_name);
- else
- count++;
-
- }
- }
- /* Else use normal interrupt tree parsing */
- else {
- /* First try to do a proper OF tree parsing */
- for (index = 0; of_irq_map_one(np, index, &oirq) == 0;
- index++) {
- if (count > 15)
- break;
- virqs[count] = irq_create_of_mapping(oirq.controller,
- oirq.specifier,
- oirq.size);
- if (virqs[count] == NO_IRQ)
- printk(KERN_ERR "Unable to allocate interrupt "
- "number for %s\n", np->full_name);
- else
- count++;
- }
- }
-
- /* Now request them */
- for (i = 0; i < count; i++) {
- if (request_irq(virqs[i], handler, 0, name, NULL)) {
- printk(KERN_ERR "Unable to request interrupt %d for "
- "%s\n", virqs[i], np->full_name);
- return;
- }
- }
-}
-
/*
* Initialize handlers for the set of interrupts caused by hardware errors
* and power system events.
@@ -138,14 +81,15 @@ static int __init init_ras_IRQ(void)
/* Internal Errors */
np = of_find_node_by_path("/event-sources/internal-errors");
if (np != NULL) {
- request_ras_irqs(np, ras_error_interrupt, "RAS_ERROR");
+ request_event_sources_irqs(np, ras_error_interrupt,
+ "RAS_ERROR");
of_node_put(np);
}
/* EPOW Events */
np = of_find_node_by_path("/event-sources/epow-events");
if (np != NULL) {
- request_ras_irqs(np, ras_epow_interrupt, "RAS_EPOW");
+ request_event_sources_irqs(np, ras_epow_interrupt, "RAS_EPOW");
of_node_put(np);
}
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 6710761bf60f..a6d19e3a505e 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -496,13 +496,14 @@ static int __init pSeries_probe(void)
}
-DECLARE_PER_CPU(unsigned long, smt_snooze_delay);
+DECLARE_PER_CPU(long, smt_snooze_delay);
static void pseries_dedicated_idle_sleep(void)
{
unsigned int cpu = smp_processor_id();
unsigned long start_snooze;
unsigned long in_purr, out_purr;
+ long snooze = __get_cpu_var(smt_snooze_delay);
/*
* Indicate to the HV that we are idle. Now would be
@@ -517,13 +518,12 @@ static void pseries_dedicated_idle_sleep(void)
* has been checked recently. If we should poll for a little
* while, do so.
*/
- if (__get_cpu_var(smt_snooze_delay)) {
- start_snooze = get_tb() +
- __get_cpu_var(smt_snooze_delay) * tb_ticks_per_usec;
+ if (snooze) {
+ start_snooze = get_tb() + snooze * tb_ticks_per_usec;
local_irq_enable();
set_thread_flag(TIF_POLLING_NRFLAG);
- while (get_tb() < start_snooze) {
+ while ((snooze < 0) || (get_tb() < start_snooze)) {
if (need_resched() || cpu_is_offline(cpu))
goto out;
ppc64_runlatch_off();
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 4e7f89a84561..3b1bf61c45be 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -55,7 +55,29 @@
* The Primary thread of each non-boot processor was started from the OF client
* interface by prom_hold_cpus and is spinning on secondary_hold_spinloop.
*/
-static cpumask_t of_spin_map;
+static cpumask_var_t of_spin_mask;
+
+/* Query where a cpu is now. Return codes #defined in plpar_wrappers.h */
+int smp_query_cpu_stopped(unsigned int pcpu)
+{
+ int cpu_status, status;
+ int qcss_tok = rtas_token("query-cpu-stopped-state");
+
+ if (qcss_tok == RTAS_UNKNOWN_SERVICE) {
+ printk(KERN_INFO "Firmware doesn't support "
+ "query-cpu-stopped-state\n");
+ return QCSS_HARDWARE_ERROR;
+ }
+
+ status = rtas_call(qcss_tok, 1, 2, &cpu_status, pcpu);
+ if (status != 0) {
+ printk(KERN_ERR
+ "RTAS query-cpu-stopped-state failed: %i\n", status);
+ return status;
+ }
+
+ return cpu_status;
+}
/**
* smp_startup_cpu() - start the given cpu
@@ -76,12 +98,18 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
unsigned int pcpu;
int start_cpu;
- if (cpu_isset(lcpu, of_spin_map))
+ if (cpumask_test_cpu(lcpu, of_spin_mask))
/* Already started by OF and sitting in spin loop */
return 1;
pcpu = get_hard_smp_processor_id(lcpu);
+ /* Check to see if the CPU out of FW already for kexec */
+ if (smp_query_cpu_stopped(pcpu) == QCSS_NOT_STOPPED){
+ cpumask_set_cpu(lcpu, of_spin_mask);
+ return 1;
+ }
+
/* Fixup atomic count: it exited inside IRQ handler. */
task_thread_info(paca[lcpu].__current)->preempt_count = 0;
@@ -115,7 +143,7 @@ static void __devinit smp_xics_setup_cpu(int cpu)
if (firmware_has_feature(FW_FEATURE_SPLPAR))
vpa_init(cpu);
- cpu_clear(cpu, of_spin_map);
+ cpumask_clear_cpu(cpu, of_spin_mask);
set_cpu_current_state(cpu, CPU_STATE_ONLINE);
set_default_offline_state(cpu);
@@ -186,17 +214,19 @@ static void __init smp_init_pseries(void)
pr_debug(" -> smp_init_pSeries()\n");
+ alloc_bootmem_cpumask_var(&of_spin_mask);
+
/* Mark threads which are still spinning in hold loops. */
if (cpu_has_feature(CPU_FTR_SMT)) {
for_each_present_cpu(i) {
if (cpu_thread_in_core(i) == 0)
- cpu_set(i, of_spin_map);
+ cpumask_set_cpu(i, of_spin_mask);
}
} else {
- of_spin_map = cpu_present_map;
+ cpumask_copy(of_spin_mask, cpu_present_mask);
}
- cpu_clear(boot_cpuid, of_spin_map);
+ cpumask_clear_cpu(boot_cpuid, of_spin_mask);
/* Non-lpar has additional take/give timebase */
if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) {
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 1bcedd8b4616..f19d19468393 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -163,29 +163,37 @@ static inline void lpar_qirr_info(int n_cpu , u8 value)
/* Interface to generic irq subsystem */
#ifdef CONFIG_SMP
-static int get_irq_server(unsigned int virq, cpumask_t cpumask,
+/*
+ * For the moment we only implement delivery to all cpus or one cpu.
+ *
+ * If the requested affinity is cpu_all_mask, we set global affinity.
+ * If not we set it to the first cpu in the mask, even if multiple cpus
+ * are set. This is so things like irqbalance (which set core and package
+ * wide affinities) do the right thing.
+ */
+static int get_irq_server(unsigned int virq, const struct cpumask *cpumask,
unsigned int strict_check)
{
- int server;
- /* For the moment only implement delivery to all cpus or one cpu */
- cpumask_t tmp = CPU_MASK_NONE;
if (!distribute_irqs)
return default_server;
- if (!cpus_equal(cpumask, CPU_MASK_ALL)) {
- cpus_and(tmp, cpu_online_map, cpumask);
-
- server = first_cpu(tmp);
+ if (!cpumask_equal(cpumask, cpu_all_mask)) {
+ int server = cpumask_first_and(cpu_online_mask, cpumask);
- if (server < NR_CPUS)
+ if (server < nr_cpu_ids)
return get_hard_smp_processor_id(server);
if (strict_check)
return -1;
}
- if (cpus_equal(cpu_online_map, cpu_present_map))
+ /*
+ * Workaround issue with some versions of JS20 firmware that
+ * deliver interrupts to cpus which haven't been started. This
+ * happens when using the maxcpus= boot option.
+ */
+ if (cpumask_equal(cpu_online_mask, cpu_present_mask))
return default_distrib_server;
return default_server;
@@ -207,7 +215,7 @@ static void xics_unmask_irq(unsigned int virq)
if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
return;
- server = get_irq_server(virq, *(irq_to_desc(virq)->affinity), 0);
+ server = get_irq_server(virq, irq_to_desc(virq)->affinity, 0);
call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server,
DEFAULT_PRIORITY);
@@ -398,11 +406,7 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
return -1;
}
- /*
- * For the moment only implement delivery to all cpus or one cpu.
- * Get current irq_server for the given irq
- */
- irq_server = get_irq_server(virq, *cpumask, 1);
+ irq_server = get_irq_server(virq, cpumask, 1);
if (irq_server == -1) {
char cpulist[128];
cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
@@ -611,7 +615,7 @@ int __init smp_xics_probe(void)
{
xics_request_ipi();
- return cpus_weight(cpu_possible_map);
+ return cpumask_weight(cpu_possible_mask);
}
#endif /* CONFIG_SMP */
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