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-rw-r--r--arch/ia64/kernel/acpi.c53
-rw-r--r--arch/ia64/kernel/entry.S4
-rw-r--r--arch/ia64/kernel/ia64_ksyms.c15
-rw-r--r--arch/ia64/kernel/setup.c4
-rw-r--r--arch/ia64/kernel/smpboot.c5
-rw-r--r--arch/ia64/kernel/time.c39
-rw-r--r--arch/ia64/kernel/traps.c8
-rw-r--r--arch/ia64/sn/kernel/io_init.c97
-rw-r--r--arch/ia64/sn/kernel/setup.c4
-rw-r--r--arch/ia64/sn/kernel/sn2/prominfo_proc.c25
-rw-r--r--arch/ia64/sn/kernel/sn2/sn2_smp.c35
-rw-r--r--arch/ia64/sn/kernel/sn2/sn_proc_fs.c22
-rw-r--r--arch/ia64/sn/kernel/sn2/timer.c19
-rw-r--r--arch/ia64/sn/kernel/sn2/timer_interrupt.c7
-rw-r--r--arch/ia64/sn/kernel/tiocx.c4
-rw-r--r--arch/ia64/sn/kernel/xpc_channel.c8
-rw-r--r--arch/ia64/sn/kernel/xpc_main.c20
-rw-r--r--arch/ia64/sn/pci/pci_dma.c16
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_ate.c29
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_dma.c14
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_provider.c9
21 files changed, 235 insertions, 202 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index d2702c419cf8..ecd44bdc8394 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -761,6 +761,59 @@ int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
return (0);
}
+int additional_cpus __initdata = -1;
+
+static __init int setup_additional_cpus(char *s)
+{
+ if (s)
+ additional_cpus = simple_strtol(s, NULL, 0);
+
+ return 0;
+}
+
+early_param("additional_cpus", setup_additional_cpus);
+
+/*
+ * cpu_possible_map should be static, it cannot change as cpu's
+ * are onlined, or offlined. The reason is per-cpu data-structures
+ * are allocated by some modules at init time, and dont expect to
+ * do this dynamically on cpu arrival/departure.
+ * cpu_present_map on the other hand can change dynamically.
+ * In case when cpu_hotplug is not compiled, then we resort to current
+ * behaviour, which is cpu_possible == cpu_present.
+ * - Ashok Raj
+ *
+ * Three ways to find out the number of additional hotplug CPUs:
+ * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
+ * - The user can overwrite it with additional_cpus=NUM
+ * - Otherwise don't reserve additional CPUs.
+ */
+__init void prefill_possible_map(void)
+{
+ int i;
+ int possible, disabled_cpus;
+
+ disabled_cpus = total_cpus - available_cpus;
+
+ if (additional_cpus == -1) {
+ if (disabled_cpus > 0)
+ additional_cpus = disabled_cpus;
+ else
+ additional_cpus = 0;
+ }
+
+ possible = available_cpus + additional_cpus;
+
+ if (possible > NR_CPUS)
+ possible = NR_CPUS;
+
+ printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
+ possible, max((possible - available_cpus), 0));
+
+ for (i = 0; i < possible; i++)
+ cpu_set(i, cpu_possible_map);
+}
+
int acpi_map_lsapic(acpi_handle handle, int *pcpu)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 27b222c277e4..930fdfca6ddb 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -569,7 +569,9 @@ GLOBAL_ENTRY(ia64_trace_syscall)
.mem.offset 0,0; st8.spill [r2]=r8 // store return value in slot for r8
.mem.offset 8,0; st8.spill [r3]=r10 // clear error indication in slot for r10
br.call.sptk.many rp=syscall_trace_leave // give parent a chance to catch return value
-.ret3: br.cond.sptk .work_pending_syscall_end
+.ret3:
+(pUStk) cmp.eq.unc p6,p0=r0,r0 // p6 <- pUStk
+ br.cond.sptk .work_pending_syscall_end
strace_error:
ld8 r3=[r2] // load pt_regs.r8
diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
index e72de580ebbf..bbcfd08378a6 100644
--- a/arch/ia64/kernel/ia64_ksyms.c
+++ b/arch/ia64/kernel/ia64_ksyms.c
@@ -10,23 +10,8 @@
#include <linux/string.h>
EXPORT_SYMBOL(memset);
-EXPORT_SYMBOL(memchr);
-EXPORT_SYMBOL(memcmp);
EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(memmove);
-EXPORT_SYMBOL(memscan);
-EXPORT_SYMBOL(strcat);
-EXPORT_SYMBOL(strchr);
-EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strcpy);
EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(strncat);
-EXPORT_SYMBOL(strncmp);
-EXPORT_SYMBOL(strncpy);
-EXPORT_SYMBOL(strnlen);
-EXPORT_SYMBOL(strrchr);
-EXPORT_SYMBOL(strstr);
-EXPORT_SYMBOL(strpbrk);
#include <asm/checksum.h>
EXPORT_SYMBOL(ip_fast_csum); /* hand-coded assembly */
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 35f7835294a3..3258e09278d0 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -430,6 +430,7 @@ setup_arch (char **cmdline_p)
if (early_console_setup(*cmdline_p) == 0)
mark_bsp_online();
+ parse_early_param();
#ifdef CONFIG_ACPI
/* Initialize the ACPI boot-time table parser */
acpi_table_init();
@@ -688,6 +689,9 @@ void
setup_per_cpu_areas (void)
{
/* start_kernel() requires this... */
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+ prefill_possible_map();
+#endif
}
/*
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 8f44e7d2df66..b681ef34a86e 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -129,7 +129,7 @@ DEFINE_PER_CPU(int, cpu_state);
/* Bitmasks of currently online, and possible CPUs */
cpumask_t cpu_online_map;
EXPORT_SYMBOL(cpu_online_map);
-cpumask_t cpu_possible_map;
+cpumask_t cpu_possible_map = CPU_MASK_NONE;
EXPORT_SYMBOL(cpu_possible_map);
cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
@@ -506,9 +506,6 @@ smp_build_cpu_map (void)
for (cpu = 0; cpu < NR_CPUS; cpu++) {
ia64_cpu_to_sapicid[cpu] = -1;
-#ifdef CONFIG_HOTPLUG_CPU
- cpu_set(cpu, cpu_possible_map);
-#endif
}
ia64_cpu_to_sapicid[0] = boot_cpu_id;
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index a094ec49ccfa..307d01e15b2e 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -250,32 +250,27 @@ time_init (void)
set_normalized_timespec(&wall_to_monotonic, -xtime.tv_sec, -xtime.tv_nsec);
}
-#define SMALLUSECS 100
-
-void
-udelay (unsigned long usecs)
+/*
+ * Generic udelay assumes that if preemption is allowed and the thread
+ * migrates to another CPU, that the ITC values are synchronized across
+ * all CPUs.
+ */
+static void
+ia64_itc_udelay (unsigned long usecs)
{
- unsigned long start;
- unsigned long cycles;
- unsigned long smallusecs;
+ unsigned long start = ia64_get_itc();
+ unsigned long end = start + usecs*local_cpu_data->cyc_per_usec;
- /*
- * Execute the non-preemptible delay loop (because the ITC might
- * not be synchronized between CPUS) in relatively short time
- * chunks, allowing preemption between the chunks.
- */
- while (usecs > 0) {
- smallusecs = (usecs > SMALLUSECS) ? SMALLUSECS : usecs;
- preempt_disable();
- cycles = smallusecs*local_cpu_data->cyc_per_usec;
- start = ia64_get_itc();
+ while (time_before(ia64_get_itc(), end))
+ cpu_relax();
+}
- while (ia64_get_itc() - start < cycles)
- cpu_relax();
+void (*ia64_udelay)(unsigned long usecs) = &ia64_itc_udelay;
- preempt_enable();
- usecs -= smallusecs;
- }
+void
+udelay (unsigned long usecs)
+{
+ (*ia64_udelay)(usecs);
}
EXPORT_SYMBOL(udelay);
diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c
index 55391901b013..dabd6c32641e 100644
--- a/arch/ia64/kernel/traps.c
+++ b/arch/ia64/kernel/traps.c
@@ -16,6 +16,7 @@
#include <linux/module.h> /* for EXPORT_SYMBOL */
#include <linux/hardirq.h>
#include <linux/kprobes.h>
+#include <linux/delay.h> /* for ssleep() */
#include <asm/fpswa.h>
#include <asm/ia32.h>
@@ -116,6 +117,13 @@ die (const char *str, struct pt_regs *regs, long err)
bust_spinlocks(0);
die.lock_owner = -1;
spin_unlock_irq(&die.lock);
+
+ if (panic_on_oops) {
+ printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
+ ssleep(5);
+ panic("Fatal exception");
+ }
+
do_exit(SIGSEGV);
}
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 3437c2390429..3edef0d32f86 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -23,6 +23,10 @@
#include "xtalk/hubdev.h"
#include "xtalk/xwidgetdev.h"
+
+extern void sn_init_cpei_timer(void);
+extern void register_sn_procfs(void);
+
static struct list_head sn_sysdata_list;
/* sysdata list struct */
@@ -40,12 +44,12 @@ struct brick {
struct slab_info slab_info[MAX_SLABS + 1];
};
-int sn_ioif_inited = 0; /* SN I/O infrastructure initialized? */
+int sn_ioif_inited; /* SN I/O infrastructure initialized? */
struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
-static int max_segment_number = 0; /* Default highest segment number */
-static int max_pcibus_number = 255; /* Default highest pci bus number */
+static int max_segment_number; /* Default highest segment number */
+static int max_pcibus_number = 255; /* Default highest pci bus number */
/*
* Hooks and struct for unsupported pci providers
@@ -84,7 +88,6 @@ static inline u64
sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
u64 address)
{
-
struct ia64_sal_retval ret_stuff;
ret_stuff.status = 0;
ret_stuff.v0 = 0;
@@ -94,7 +97,6 @@ sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
(u64) nasid, (u64) widget_num,
(u64) device_num, (u64) address, 0, 0, 0);
return ret_stuff.status;
-
}
/*
@@ -102,7 +104,6 @@ sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
*/
static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
{
-
struct ia64_sal_retval ret_stuff;
ret_stuff.status = 0;
ret_stuff.v0 = 0;
@@ -118,7 +119,6 @@ static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
*/
static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
{
-
struct ia64_sal_retval ret_stuff;
ret_stuff.status = 0;
ret_stuff.v0 = 0;
@@ -215,7 +215,7 @@ static void __init sn_fixup_ionodes(void)
struct hubdev_info *hubdev;
u64 status;
u64 nasid;
- int i, widget, device;
+ int i, widget, device, size;
/*
* Get SGI Specific HUB chipset information.
@@ -251,48 +251,37 @@ static void __init sn_fixup_ionodes(void)
if (!hubdev->hdi_flush_nasid_list.widget_p)
continue;
+ size = (HUB_WIDGET_ID_MAX + 1) *
+ sizeof(struct sn_flush_device_kernel *);
hubdev->hdi_flush_nasid_list.widget_p =
- kmalloc((HUB_WIDGET_ID_MAX + 1) *
- sizeof(struct sn_flush_device_kernel *),
- GFP_KERNEL);
- memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
- (HUB_WIDGET_ID_MAX + 1) *
- sizeof(struct sn_flush_device_kernel *));
+ kzalloc(size, GFP_KERNEL);
+ if (!hubdev->hdi_flush_nasid_list.widget_p)
+ BUG();
for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
- sn_flush_device_kernel = kmalloc(DEV_PER_WIDGET *
- sizeof(struct
- sn_flush_device_kernel),
- GFP_KERNEL);
+ size = DEV_PER_WIDGET *
+ sizeof(struct sn_flush_device_kernel);
+ sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);
if (!sn_flush_device_kernel)
BUG();
- memset(sn_flush_device_kernel, 0x0,
- DEV_PER_WIDGET *
- sizeof(struct sn_flush_device_kernel));
dev_entry = sn_flush_device_kernel;
for (device = 0; device < DEV_PER_WIDGET;
device++,dev_entry++) {
- dev_entry->common = kmalloc(sizeof(struct
- sn_flush_device_common),
- GFP_KERNEL);
+ size = sizeof(struct sn_flush_device_common);
+ dev_entry->common = kzalloc(size, GFP_KERNEL);
if (!dev_entry->common)
BUG();
- memset(dev_entry->common, 0x0, sizeof(struct
- sn_flush_device_common));
if (sn_prom_feature_available(
PRF_DEVICE_FLUSH_LIST))
status = sal_get_device_dmaflush_list(
- nasid,
- widget,
- device,
- (u64)(dev_entry->common));
+ nasid, widget, device,
+ (u64)(dev_entry->common));
else
status = sn_device_fixup_war(nasid,
- widget,
- device,
- dev_entry->common);
+ widget, device,
+ dev_entry->common);
if (status != SALRET_OK)
panic("SAL call failed: %s\n",
ia64_sal_strerror(status));
@@ -383,13 +372,12 @@ void sn_pci_fixup_slot(struct pci_dev *dev)
pci_dev_get(dev); /* for the sysdata pointer */
pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
- if (pcidev_info <= 0)
+ if (!pcidev_info)
BUG(); /* Cannot afford to run out of memory */
- sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
- if (sn_irq_info <= 0)
+ sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
+ if (!sn_irq_info)
BUG(); /* Cannot afford to run out of memory */
- memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
/* Call to retrieve pci device information needed by kernel. */
status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
@@ -482,13 +470,13 @@ void sn_pci_fixup_slot(struct pci_dev *dev)
*/
void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
{
- int status = 0;
+ int status;
int nasid, cnode;
struct pci_controller *controller;
struct sn_pci_controller *sn_controller;
struct pcibus_bussoft *prom_bussoft_ptr;
struct hubdev_info *hubdev_info;
- void *provider_soft = NULL;
+ void *provider_soft;
struct sn_pcibus_provider *provider;
status = sal_get_pcibus_info((u64) segment, (u64) busnum,
@@ -535,6 +523,8 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
bus->sysdata = controller;
if (provider->bus_fixup)
provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
+ else
+ provider_soft = NULL;
if (provider_soft == NULL) {
/* fixup failed or not applicable */
@@ -638,13 +628,8 @@ void sn_bus_free_sysdata(void)
static int __init sn_pci_init(void)
{
- int i = 0;
- int j = 0;
+ int i, j;
struct pci_dev *pci_dev = NULL;
- extern void sn_init_cpei_timer(void);
-#ifdef CONFIG_PROC_FS
- extern void register_sn_procfs(void);
-#endif
if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
return 0;
@@ -700,32 +685,29 @@ static int __init sn_pci_init(void)
*/
void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
{
-
struct hubdev_info *hubdev_info;
+ int size;
+ pg_data_t *pg;
+
+ size = sizeof(struct hubdev_info);
if (node >= num_online_nodes()) /* Headless/memless IO nodes */
- hubdev_info =
- (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
- sizeof(struct
- hubdev_info));
+ pg = NODE_DATA(0);
else
- hubdev_info =
- (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
- sizeof(struct
- hubdev_info));
- npda->pdinfo = (void *)hubdev_info;
+ pg = NODE_DATA(node);
+ hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);
+
+ npda->pdinfo = (void *)hubdev_info;
}
geoid_t
cnodeid_get_geoid(cnodeid_t cnode)
{
-
struct hubdev_info *hubdev;
hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
return hubdev->hdi_geoid;
-
}
subsys_initcall(sn_pci_init);
@@ -734,3 +716,4 @@ EXPORT_SYMBOL(sn_pci_unfixup_slot);
EXPORT_SYMBOL(sn_pci_controller_fixup);
EXPORT_SYMBOL(sn_bus_store_sysdata);
EXPORT_SYMBOL(sn_bus_free_sysdata);
+EXPORT_SYMBOL(sn_pcidev_info_get);
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 48645ac120fc..5b84836c2171 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -75,7 +75,7 @@ EXPORT_SYMBOL(sn_rtc_cycles_per_second);
DEFINE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
EXPORT_PER_CPU_SYMBOL(__sn_hub_info);
-DEFINE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
+DEFINE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_COMPACT_NODES]);
EXPORT_PER_CPU_SYMBOL(__sn_cnodeid_to_nasid);
DEFINE_PER_CPU(struct nodepda_s *, __sn_nodepda);
@@ -317,6 +317,7 @@ struct pcdp_vga_device {
#define PCDP_PCI_TRANS_IOPORT 0x02
#define PCDP_PCI_TRANS_MMIO 0x01
+#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
static void
sn_scan_pcdp(void)
{
@@ -358,6 +359,7 @@ sn_scan_pcdp(void)
break; /* once we find the primary, we're done */
}
}
+#endif
static unsigned long sn2_rtc_initial;
diff --git a/arch/ia64/sn/kernel/sn2/prominfo_proc.c b/arch/ia64/sn/kernel/sn2/prominfo_proc.c
index 81c63b2f8ae9..6ae276d5d50c 100644
--- a/arch/ia64/sn/kernel/sn2/prominfo_proc.c
+++ b/arch/ia64/sn/kernel/sn2/prominfo_proc.c
@@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 1999,2001-2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (C) 1999,2001-2004, 2006 Silicon Graphics, Inc. All Rights Reserved.
*
* Module to export the system's Firmware Interface Tables, including
* PROM revision numbers and banners, in /proc
@@ -190,7 +190,7 @@ static int
read_version_entry(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
- int len = 0;
+ int len;
/* data holds the NASID of the node */
len = dump_version(page, (unsigned long)data);
@@ -202,7 +202,7 @@ static int
read_fit_entry(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
- int len = 0;
+ int len;
/* data holds the NASID of the node */
len = dump_fit(page, (unsigned long)data);
@@ -229,13 +229,16 @@ int __init prominfo_init(void)
struct proc_dir_entry *p;
cnodeid_t cnodeid;
unsigned long nasid;
+ int size;
char name[NODE_NAME_LEN];
if (!ia64_platform_is("sn2"))
return 0;
- proc_entries = kmalloc(num_online_nodes() * sizeof(struct proc_dir_entry *),
- GFP_KERNEL);
+ size = num_online_nodes() * sizeof(struct proc_dir_entry *);
+ proc_entries = kzalloc(size, GFP_KERNEL);
+ if (!proc_entries)
+ return -ENOMEM;
sgi_prominfo_entry = proc_mkdir("sgi_prominfo", NULL);
@@ -244,14 +247,12 @@ int __init prominfo_init(void)
sprintf(name, "node%d", cnodeid);
*entp = proc_mkdir(name, sgi_prominfo_entry);
nasid = cnodeid_to_nasid(cnodeid);
- p = create_proc_read_entry(
- "fit", 0, *entp, read_fit_entry,
- (void *)nasid);
+ p = create_proc_read_entry("fit", 0, *entp, read_fit_entry,
+ (void *)nasid);
if (p)
p->owner = THIS_MODULE;
- p = create_proc_read_entry(
- "version", 0, *entp, read_version_entry,
- (void *)nasid);
+ p = create_proc_read_entry("version", 0, *entp,
+ read_version_entry, (void *)nasid);
if (p)
p->owner = THIS_MODULE;
entp++;
@@ -263,7 +264,7 @@ int __init prominfo_init(void)
void __exit prominfo_exit(void)
{
struct proc_dir_entry **entp;
- unsigned cnodeid;
+ unsigned int cnodeid;
char name[NODE_NAME_LEN];
entp = proc_entries;
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index f153a4c35c70..24eefb2fc55f 100644
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -46,8 +46,14 @@ DECLARE_PER_CPU(struct ptc_stats, ptcstats);
static __cacheline_aligned DEFINE_SPINLOCK(sn2_global_ptc_lock);
-void sn2_ptc_deadlock_recovery(short *, short, short, int, volatile unsigned long *, unsigned long,
- volatile unsigned long *, unsigned long);
+extern unsigned long
+sn2_ptc_deadlock_recovery_core(volatile unsigned long *, unsigned long,
+ volatile unsigned long *, unsigned long,
+ volatile unsigned long *, unsigned long);
+void
+sn2_ptc_deadlock_recovery(short *, short, short, int,
+ volatile unsigned long *, unsigned long,
+ volatile unsigned long *, unsigned long);
/*
* Note: some is the following is captured here to make degugging easier
@@ -59,16 +65,6 @@ void sn2_ptc_deadlock_recovery(short *, short, short, int, volatile unsigned lon
#define reset_max_active_on_deadlock() 1
#define PTC_LOCK(sh1) ((sh1) ? &sn2_global_ptc_lock : &sn_nodepda->ptc_lock)
-static inline void ptc_lock(int sh1, unsigned long *flagp)
-{
- spin_lock_irqsave(PTC_LOCK(sh1), *flagp);
-}
-
-static inline void ptc_unlock(int sh1, unsigned long flags)
-{
- spin_unlock_irqrestore(PTC_LOCK(sh1), flags);
-}
-
struct ptc_stats {
unsigned long ptc_l;
unsigned long change_rid;
@@ -82,6 +78,8 @@ struct ptc_stats {
unsigned long shub_ptc_flushes_not_my_mm;
};
+#define sn2_ptctest 0
+
static inline unsigned long wait_piowc(void)
{
volatile unsigned long *piows;
@@ -200,7 +198,7 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
max_active = max_active_pio(shub1);
itc = ia64_get_itc();
- ptc_lock(shub1, &flags);
+ spin_lock_irqsave(PTC_LOCK(shub1), flags);
itc2 = ia64_get_itc();
__get_cpu_var(ptcstats).lock_itc_clocks += itc2 - itc;
@@ -258,7 +256,7 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
ia64_srlz_d();
}
- ptc_unlock(shub1, flags);
+ spin_unlock_irqrestore(PTC_LOCK(shub1), flags);
preempt_enable();
}
@@ -270,11 +268,12 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
* TLB flush transaction. The recovery sequence is somewhat tricky & is
* coded in assembly language.
*/
-void sn2_ptc_deadlock_recovery(short *nasids, short ib, short ie, int mynasid, volatile unsigned long *ptc0, unsigned long data0,
- volatile unsigned long *ptc1, unsigned long data1)
+
+void
+sn2_ptc_deadlock_recovery(short *nasids, short ib, short ie, int mynasid,
+ volatile unsigned long *ptc0, unsigned long data0,
+ volatile unsigned long *ptc1, unsigned long data1)
{
- extern unsigned long sn2_ptc_deadlock_recovery_core(volatile unsigned long *, unsigned long,
- volatile unsigned long *, unsigned long, volatile unsigned long *, unsigned long);
short nasid, i;
unsigned long *piows, zeroval, n;
diff --git a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
index a06719d752a0..c686d9c12f7b 100644
--- a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
+++ b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
@@ -6,11 +6,11 @@
* Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/config.h>
-#include <asm/uaccess.h>
#ifdef CONFIG_PROC_FS
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <asm/uaccess.h>
#include <asm/sn/sn_sal.h>
static int partition_id_show(struct seq_file *s, void *p)
@@ -90,10 +90,10 @@ static int coherence_id_open(struct inode *inode, struct file *file)
return single_open(file, coherence_id_show, NULL);
}
-static struct proc_dir_entry *sn_procfs_create_entry(
- const char *name, struct proc_dir_entry *parent,
- int (*openfunc)(struct inode *, struct file *),
- int (*releasefunc)(struct inode *, struct file *))
+static struct proc_dir_entry
+*sn_procfs_create_entry(const char *name, struct proc_dir_entry *parent,
+ int (*openfunc)(struct inode *, struct file *),
+ int (*releasefunc)(struct inode *, struct file *))
{
struct proc_dir_entry *e = create_proc_entry(name, 0444, parent);
@@ -126,24 +126,24 @@ void register_sn_procfs(void)
return;
sn_procfs_create_entry("partition_id", sgi_proc_dir,
- partition_id_open, single_release);
+ partition_id_open, single_release);
sn_procfs_create_entry("system_serial_number", sgi_proc_dir,
- system_serial_number_open, single_release);
+ system_serial_number_open, single_release);
sn_procfs_create_entry("licenseID", sgi_proc_dir,
- licenseID_open, single_release);
+ licenseID_open, single_release);
e = sn_procfs_create_entry("sn_force_interrupt", sgi_proc_dir,
- sn_force_interrupt_open, single_release);
+ sn_force_interrupt_open, single_release);
if (e)
e->proc_fops->write = sn_force_interrupt_write_proc;
sn_procfs_create_entry("coherence_id", sgi_proc_dir,
- coherence_id_open, single_release);
+ coherence_id_open, single_release);
sn_procfs_create_entry("sn_topology", sgi_proc_dir,
- sn_topology_open, sn_topology_release);
+ sn_topology_open, sn_topology_release);
}
#endif /* CONFIG_PROC_FS */
diff --git a/arch/ia64/sn/kernel/sn2/timer.c b/arch/ia64/sn/kernel/sn2/timer.c
index deb9baf4d473..56a88b6df4b4 100644
--- a/arch/ia64/sn/kernel/sn2/timer.c
+++ b/arch/ia64/sn/kernel/sn2/timer.c
@@ -14,6 +14,7 @@
#include <asm/hw_irq.h>
#include <asm/system.h>
+#include <asm/timex.h>
#include <asm/sn/leds.h>
#include <asm/sn/shub_mmr.h>
@@ -28,9 +29,27 @@ static struct time_interpolator sn2_interpolator = {
.source = TIME_SOURCE_MMIO64
};
+/*
+ * sn udelay uses the RTC instead of the ITC because the ITC is not
+ * synchronized across all CPUs, and the thread may migrate to another CPU
+ * if preemption is enabled.
+ */
+static void
+ia64_sn_udelay (unsigned long usecs)
+{
+ unsigned long start = rtc_time();
+ unsigned long end = start +
+ usecs * sn_rtc_cycles_per_second / 1000000;
+
+ while (time_before((unsigned long)rtc_time(), end))
+ cpu_relax();
+}
+
void __init sn_timer_init(void)
{
sn2_interpolator.frequency = sn_rtc_cycles_per_second;
sn2_interpolator.addr = RTC_COUNTER_ADDR;
register_time_interpolator(&sn2_interpolator);
+
+ ia64_udelay = &ia64_sn_udelay;
}
diff --git a/arch/ia64/sn/kernel/sn2/timer_interrupt.c b/arch/ia64/sn/kernel/sn2/timer_interrupt.c
index adf5db2e2afe..fa7f69945917 100644
--- a/arch/ia64/sn/kernel/sn2/timer_interrupt.c
+++ b/arch/ia64/sn/kernel/sn2/timer_interrupt.c
@@ -1,7 +1,7 @@
/*
*
*
- * Copyright (c) 2005 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2005, 2006 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
@@ -22,11 +22,6 @@
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan
diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index d263d3e8fbb9..8a56f8b5ffa2 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -284,12 +284,10 @@ struct sn_irq_info *tiocx_irq_alloc(nasid_t nasid, int widget, int irq,
if ((nasid & 1) == 0)
return NULL;
- sn_irq_info = kmalloc(sn_irq_size, GFP_KERNEL);
+ sn_irq_info = kzalloc(sn_irq_size, GFP_KERNEL);
if (sn_irq_info == NULL)
return NULL;
- memset(sn_irq_info, 0x0, sn_irq_size);
-
status = tiocx_intr_alloc(nasid, widget, __pa(sn_irq_info), irq,
req_nasid, slice);
if (status) {
diff --git a/arch/ia64/sn/kernel/xpc_channel.c b/arch/ia64/sn/kernel/xpc_channel.c
index 36e5437a0fb6..cdf6856ce089 100644
--- a/arch/ia64/sn/kernel/xpc_channel.c
+++ b/arch/ia64/sn/kernel/xpc_channel.c
@@ -738,7 +738,9 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags)
/* make sure all activity has settled down first */
- if (atomic_read(&ch->references) > 0) {
+ if (atomic_read(&ch->references) > 0 ||
+ ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) &&
+ !(ch->flags & XPC_C_DISCONNECTINGCALLOUT_MADE))) {
return;
}
DBUG_ON(atomic_read(&ch->kthreads_assigned) != 0);
@@ -775,7 +777,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags)
/* both sides are disconnected now */
- if (ch->flags & XPC_C_CONNECTCALLOUT) {
+ if (ch->flags & XPC_C_DISCONNECTINGCALLOUT_MADE) {
spin_unlock_irqrestore(&ch->lock, *irq_flags);
xpc_disconnect_callout(ch, xpcDisconnected);
spin_lock_irqsave(&ch->lock, *irq_flags);
@@ -1300,7 +1302,7 @@ xpc_process_msg_IPI(struct xpc_partition *part, int ch_number)
"delivered=%d, partid=%d, channel=%d\n",
nmsgs_sent, ch->partid, ch->number);
- if (ch->flags & XPC_C_CONNECTCALLOUT) {
+ if (ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) {
xpc_activate_kthreads(ch, nmsgs_sent);
}
}
diff --git a/arch/ia64/sn/kernel/xpc_main.c b/arch/ia64/sn/kernel/xpc_main.c
index 9cd460dfe27e..8cbf16432570 100644
--- a/arch/ia64/sn/kernel/xpc_main.c
+++ b/arch/ia64/sn/kernel/xpc_main.c
@@ -750,12 +750,16 @@ xpc_daemonize_kthread(void *args)
/* let registerer know that connection has been established */
spin_lock_irqsave(&ch->lock, irq_flags);
- if (!(ch->flags & XPC_C_CONNECTCALLOUT)) {
- ch->flags |= XPC_C_CONNECTCALLOUT;
+ if (!(ch->flags & XPC_C_CONNECTEDCALLOUT)) {
+ ch->flags |= XPC_C_CONNECTEDCALLOUT;
spin_unlock_irqrestore(&ch->lock, irq_flags);
xpc_connected_callout(ch);
+ spin_lock_irqsave(&ch->lock, irq_flags);
+ ch->flags |= XPC_C_CONNECTEDCALLOUT_MADE;
+ spin_unlock_irqrestore(&ch->lock, irq_flags);
+
/*
* It is possible that while the callout was being
* made that the remote partition sent some messages.
@@ -777,15 +781,17 @@ xpc_daemonize_kthread(void *args)
if (atomic_dec_return(&ch->kthreads_assigned) == 0) {
spin_lock_irqsave(&ch->lock, irq_flags);
- if ((ch->flags & XPC_C_CONNECTCALLOUT) &&
- !(ch->flags & XPC_C_DISCONNECTCALLOUT)) {
- ch->flags |= XPC_C_DISCONNECTCALLOUT;
+ if ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) &&
+ !(ch->flags & XPC_C_DISCONNECTINGCALLOUT)) {
+ ch->flags |= XPC_C_DISCONNECTINGCALLOUT;
spin_unlock_irqrestore(&ch->lock, irq_flags);
xpc_disconnect_callout(ch, xpcDisconnecting);
- } else {
- spin_unlock_irqrestore(&ch->lock, irq_flags);
+
+ spin_lock_irqsave(&ch->lock, irq_flags);
+ ch->flags |= XPC_C_DISCONNECTINGCALLOUT_MADE;
}
+ spin_unlock_irqrestore(&ch->lock, irq_flags);
if (atomic_dec_return(&part->nchannels_engaged) == 0) {
xpc_mark_partition_disengaged(part);
xpc_IPI_send_disengage(part);
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c
index 5a36292388eb..b4b84c269210 100644
--- a/arch/ia64/sn/pci/pci_dma.c
+++ b/arch/ia64/sn/pci/pci_dma.c
@@ -335,10 +335,10 @@ int sn_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size)
*/
SAL_CALL(isrv, SN_SAL_IOIF_PCI_SAFE,
- pci_domain_nr(bus), bus->number,
- 0, /* io */
- 0, /* read */
- port, size, __pa(val));
+ pci_domain_nr(bus), bus->number,
+ 0, /* io */
+ 0, /* read */
+ port, size, __pa(val));
if (isrv.status == 0)
return size;
@@ -381,10 +381,10 @@ int sn_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size)
*/
SAL_CALL(isrv, SN_SAL_IOIF_PCI_SAFE,
- pci_domain_nr(bus), bus->number,
- 0, /* io */
- 1, /* write */
- port, size, __pa(&val));
+ pci_domain_nr(bus), bus->number,
+ 0, /* io */
+ 1, /* write */
+ port, size, __pa(&val));
if (isrv.status == 0)
return size;
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_ate.c b/arch/ia64/sn/pci/pcibr/pcibr_ate.c
index aa3fa5152a32..1f0253bfe0a0 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_ate.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_ate.c
@@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2001-2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2001-2006 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/types.h>
@@ -12,7 +12,7 @@
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
-int pcibr_invalidate_ate = 0; /* by default don't invalidate ATE on free */
+int pcibr_invalidate_ate; /* by default don't invalidate ATE on free */
/*
* mark_ate: Mark the ate as either free or inuse.
@@ -20,14 +20,12 @@ int pcibr_invalidate_ate = 0; /* by default don't invalidate ATE on free */
static void mark_ate(struct ate_resource *ate_resource, int start, int number,
u64 value)
{
-
u64 *ate = ate_resource->ate;
int index;
int length = 0;
for (index = start; length < number; index++, length++)
ate[index] = value;
-
}
/*
@@ -37,7 +35,6 @@ static void mark_ate(struct ate_resource *ate_resource, int start, int number,
static int find_free_ate(struct ate_resource *ate_resource, int start,
int count)
{
-
u64 *ate = ate_resource->ate;
int index;
int start_free;
@@ -70,12 +67,10 @@ static int find_free_ate(struct ate_resource *ate_resource, int start,
static inline void free_ate_resource(struct ate_resource *ate_resource,
int start)
{
-
mark_ate(ate_resource, start, ate_resource->ate[start], 0);
if ((ate_resource->lowest_free_index > start) ||
(ate_resource->lowest_free_index < 0))
ate_resource->lowest_free_index = start;
-
}
/*
@@ -84,7 +79,6 @@ static inline void free_ate_resource(struct ate_resource *ate_resource,
static inline int alloc_ate_resource(struct ate_resource *ate_resource,
int ate_needed)
{
-
int start_index;
/*
@@ -118,19 +112,12 @@ static inline int alloc_ate_resource(struct ate_resource *ate_resource,
*/
int pcibr_ate_alloc(struct pcibus_info *pcibus_info, int count)
{
- int status = 0;
- u64 flag;
+ int status;
+ unsigned long flags;
- flag = pcibr_lock(pcibus_info);
+ spin_lock_irqsave(&pcibus_info->pbi_lock, flags);
status = alloc_ate_resource(&pcibus_info->pbi_int_ate_resource, count);
-
- if (status < 0) {
- /* Failed to allocate */
- pcibr_unlock(pcibus_info, flag);
- return -1;
- }
-
- pcibr_unlock(pcibus_info, flag);
+ spin_unlock_irqrestore(&pcibus_info->pbi_lock, flags);
return status;
}
@@ -182,7 +169,7 @@ void pcibr_ate_free(struct pcibus_info *pcibus_info, int index)
ate_write(pcibus_info, index, count, (ate & ~PCI32_ATE_V));
}
- flags = pcibr_lock(pcibus_info);
+ spin_lock_irqsave(&pcibus_info->pbi_lock, flags);
free_ate_resource(&pcibus_info->pbi_int_ate_resource, index);
- pcibr_unlock(pcibus_info, flags);
+ spin_unlock_irqrestore(&pcibus_info->pbi_lock, flags);
}
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_dma.c b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
index 54ce5b7ceed2..9f86bb6519aa 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
@@ -137,14 +137,12 @@ pcibr_dmatrans_direct64(struct pcidev_info * info, u64 paddr,
pci_addr |= PCI64_ATTR_VIRTUAL;
return pci_addr;
-
}
static dma_addr_t
pcibr_dmatrans_direct32(struct pcidev_info * info,
u64 paddr, size_t req_size, u64 flags)
{
-
struct pcidev_info *pcidev_info = info->pdi_host_pcidev_info;
struct pcibus_info *pcibus_info = (struct pcibus_info *)pcidev_info->
pdi_pcibus_info;
@@ -171,7 +169,6 @@ pcibr_dmatrans_direct32(struct pcidev_info * info,
}
return PCI32_DIRECT_BASE | offset;
-
}
/*
@@ -218,9 +215,8 @@ void sn_dma_flush(u64 addr)
u64 flags;
u64 itte;
struct hubdev_info *hubinfo;
- volatile struct sn_flush_device_kernel *p;
- volatile struct sn_flush_device_common *common;
-
+ struct sn_flush_device_kernel *p;
+ struct sn_flush_device_common *common;
struct sn_flush_nasid_entry *flush_nasid_list;
if (!sn_ioif_inited)
@@ -310,8 +306,7 @@ void sn_dma_flush(u64 addr)
(common->sfdl_slot - 1));
}
} else {
- spin_lock_irqsave((spinlock_t *)&p->sfdl_flush_lock,
- flags);
+ spin_lock_irqsave(&p->sfdl_flush_lock, flags);
*common->sfdl_flush_addr = 0;
/* force an interrupt. */
@@ -322,8 +317,7 @@ void sn_dma_flush(u64 addr)
cpu_relax();
/* okay, everything is synched up. */
- spin_unlock_irqrestore((spinlock_t *)&p->sfdl_flush_lock,
- flags);
+ spin_unlock_irqrestore(&p->sfdl_flush_lock, flags);
}
return;
}
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
index 2fac27049bf6..98f716bd92f0 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
@@ -163,9 +163,12 @@ pcibr_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont
/* Setup the PMU ATE map */
soft->pbi_int_ate_resource.lowest_free_index = 0;
soft->pbi_int_ate_resource.ate =
- kmalloc(soft->pbi_int_ate_size * sizeof(u64), GFP_KERNEL);
- memset(soft->pbi_int_ate_resource.ate, 0,
- (soft->pbi_int_ate_size * sizeof(u64)));
+ kzalloc(soft->pbi_int_ate_size * sizeof(u64), GFP_KERNEL);
+
+ if (!soft->pbi_int_ate_resource.ate) {
+ kfree(soft);
+ return NULL;
+ }
if (prom_bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCP) {
/* TIO PCI Bridge: find nearest node with CPUs */
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