1 files changed, 0 insertions, 540 deletions

diff --git a/arch/x86_64/kernel/mce_amd.c b/arch/x86_64/kernel/mce_amd.c
deleted file mode 100644
index d3ad7d81266..00000000000
--- a/arch/x86_64/kernel/mce_amd.c
+++ /dev/null
@@ -1,540 +0,0 @@
-/*
- *  (c) 2005 Advanced Micro Devices, Inc.
- *  Your use of this code is subject to the terms and conditions of the
- *  GNU general public license version 2. See "COPYING" or
- *  http://www.gnu.org/licenses/gpl.html
- *
- *  Written by Jacob Shin - AMD, Inc.
- *
- *  Support : jacob.shin@amd.com
- *
- *  MC4_MISC0 DRAM ECC Error Threshold available under AMD K8 Rev F.
- *  MC4_MISC0 exists per physical processor.
- *
- */
-
-#include <linux/cpu.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/kobject.h>
-#include <linux/notifier.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/sysdev.h>
-#include <linux/sysfs.h>
-#include <asm/apic.h>
-#include <asm/mce.h>
-#include <asm/msr.h>
-#include <asm/percpu.h>
-#include <asm/idle.h>
-
-#define PFX "mce_threshold: "
-#define VERSION "version 1.00.9"
-#define NR_BANKS 5
-#define THRESHOLD_MAX 0xFFF
-#define INT_TYPE_APIC 0x00020000
-#define MASK_VALID_HI 0x80000000
-#define MASK_LVTOFF_HI 0x00F00000
-#define MASK_COUNT_EN_HI 0x00080000
-#define MASK_INT_TYPE_HI 0x00060000
-#define MASK_OVERFLOW_HI 0x00010000
-#define MASK_ERR_COUNT_HI 0x00000FFF
-#define MASK_OVERFLOW 0x0001000000000000L
-
-struct threshold_bank {
-	unsigned int cpu;
-	u8 bank;
-	u8 interrupt_enable;
-	u16 threshold_limit;
-	struct kobject kobj;
-};
-
-static struct threshold_bank threshold_defaults = {
-	.interrupt_enable = 0,
-	.threshold_limit = THRESHOLD_MAX,
-};
-
-#ifdef CONFIG_SMP
-static unsigned char shared_bank[NR_BANKS] = {
-	0, 0, 0, 0, 1
-};
-#endif
-
-static DEFINE_PER_CPU(unsigned char, bank_map);	/* see which banks are on */
-
-/*
- * CPU Initialization
- */
-
-/* must be called with correct cpu affinity */
-static void threshold_restart_bank(struct threshold_bank *b,
-				   int reset, u16 old_limit)
-{
-	u32 mci_misc_hi, mci_misc_lo;
-
-	rdmsr(MSR_IA32_MC0_MISC + b->bank * 4, mci_misc_lo, mci_misc_hi);
-
-	if (b->threshold_limit < (mci_misc_hi & THRESHOLD_MAX))
-		reset = 1;	/* limit cannot be lower than err count */
-
-	if (reset) {		/* reset err count and overflow bit */
-		mci_misc_hi =
-		    (mci_misc_hi & ~(MASK_ERR_COUNT_HI | MASK_OVERFLOW_HI)) |
-		    (THRESHOLD_MAX - b->threshold_limit);
-	} else if (old_limit) {	/* change limit w/o reset */
-		int new_count = (mci_misc_hi & THRESHOLD_MAX) +
-		    (old_limit - b->threshold_limit);
-		mci_misc_hi = (mci_misc_hi & ~MASK_ERR_COUNT_HI) |
-		    (new_count & THRESHOLD_MAX);
-	}
-
-	b->interrupt_enable ?
-	    (mci_misc_hi = (mci_misc_hi & ~MASK_INT_TYPE_HI) | INT_TYPE_APIC) :
-	    (mci_misc_hi &= ~MASK_INT_TYPE_HI);
-
-	mci_misc_hi |= MASK_COUNT_EN_HI;
-	wrmsr(MSR_IA32_MC0_MISC + b->bank * 4, mci_misc_lo, mci_misc_hi);
-}
-
-void __cpuinit mce_amd_feature_init(struct cpuinfo_x86 *c)
-{
-	int bank;
-	u32 mci_misc_lo, mci_misc_hi;
-	unsigned int cpu = smp_processor_id();
-
-	for (bank = 0; bank < NR_BANKS; ++bank) {
-		rdmsr(MSR_IA32_MC0_MISC + bank * 4, mci_misc_lo, mci_misc_hi);
-
-		/* !valid, !counter present, bios locked */
-		if (!(mci_misc_hi & MASK_VALID_HI) ||
-		    !(mci_misc_hi & MASK_VALID_HI >> 1) ||
-		    (mci_misc_hi & MASK_VALID_HI >> 2))
-			continue;
-
-		per_cpu(bank_map, cpu) |= (1 << bank);
-
-#ifdef CONFIG_SMP
-		if (shared_bank[bank] && cpu_core_id[cpu])
-			continue;
-#endif
-
-		setup_threshold_lvt((mci_misc_hi & MASK_LVTOFF_HI) >> 20);
-		threshold_defaults.cpu = cpu;
-		threshold_defaults.bank = bank;
-		threshold_restart_bank(&threshold_defaults, 0, 0);
-	}
-}
-
-/*
- * APIC Interrupt Handler
- */
-
-/*
- * threshold interrupt handler will service THRESHOLD_APIC_VECTOR.
- * the interrupt goes off when error_count reaches threshold_limit.
- * the handler will simply log mcelog w/ software defined bank number.
- */
-asmlinkage void mce_threshold_interrupt(void)
-{
-	int bank;
-	struct mce m;
-
-	ack_APIC_irq();
-	exit_idle();
-	irq_enter();
-
-	memset(&m, 0, sizeof(m));
-	rdtscll(m.tsc);
-	m.cpu = smp_processor_id();
-
-	/* assume first bank caused it */
-	for (bank = 0; bank < NR_BANKS; ++bank) {
-		m.bank = MCE_THRESHOLD_BASE + bank;
-		rdmsrl(MSR_IA32_MC0_MISC + bank * 4, m.misc);
-
-		if (m.misc & MASK_OVERFLOW) {
-			mce_log(&m);
-			goto out;
-		}
-	}
-      out:
-	irq_exit();
-}
-
-/*
- * Sysfs Interface
- */
-
-static struct sysdev_class threshold_sysclass = {
-	set_kset_name("threshold"),
-};
-
-static DEFINE_PER_CPU(struct sys_device, device_threshold);
-
-struct threshold_attr {
-        struct attribute attr;
-        ssize_t(*show) (struct threshold_bank *, char *);
-        ssize_t(*store) (struct threshold_bank *, const char *, size_t count);
-};
-
-static DEFINE_PER_CPU(struct threshold_bank *, threshold_banks[NR_BANKS]);
-
-static cpumask_t affinity_set(unsigned int cpu)
-{
-	cpumask_t oldmask = current->cpus_allowed;
-	cpumask_t newmask = CPU_MASK_NONE;
-	cpu_set(cpu, newmask);
-	set_cpus_allowed(current, newmask);
-	return oldmask;
-}
-
-static void affinity_restore(cpumask_t oldmask)
-{
-	set_cpus_allowed(current, oldmask);
-}
-
-#define SHOW_FIELDS(name) \
-        static ssize_t show_ ## name(struct threshold_bank * b, char *buf) \
-        { \
-                return sprintf(buf, "%lx\n", (unsigned long) b->name); \
-        }
-SHOW_FIELDS(interrupt_enable)
-SHOW_FIELDS(threshold_limit)
-
-static ssize_t store_interrupt_enable(struct threshold_bank *b,
-				      const char *buf, size_t count)
-{
-	char *end;
-	cpumask_t oldmask;
-	unsigned long new = simple_strtoul(buf, &end, 0);
-	if (end == buf)
-		return -EINVAL;
-	b->interrupt_enable = !!new;
-
-	oldmask = affinity_set(b->cpu);
-	threshold_restart_bank(b, 0, 0);
-	affinity_restore(oldmask);
-
-	return end - buf;
-}
-
-static ssize_t store_threshold_limit(struct threshold_bank *b,
-				     const char *buf, size_t count)
-{
-	char *end;
-	cpumask_t oldmask;
-	u16 old;
-	unsigned long new = simple_strtoul(buf, &end, 0);
-	if (end == buf)
-		return -EINVAL;
-	if (new > THRESHOLD_MAX)
-		new = THRESHOLD_MAX;
-	if (new < 1)
-		new = 1;
-	old = b->threshold_limit;
-	b->threshold_limit = new;
-
-	oldmask = affinity_set(b->cpu);
-	threshold_restart_bank(b, 0, old);
-	affinity_restore(oldmask);
-
-	return end - buf;
-}
-
-static ssize_t show_error_count(struct threshold_bank *b, char *buf)
-{
-	u32 high, low;
-	cpumask_t oldmask;
-	oldmask = affinity_set(b->cpu);
-	rdmsr(MSR_IA32_MC0_MISC + b->bank * 4, low, high); /* ignore low 32 */
-	affinity_restore(oldmask);
-	return sprintf(buf, "%x\n",
-		       (high & 0xFFF) - (THRESHOLD_MAX - b->threshold_limit));
-}
-
-static ssize_t store_error_count(struct threshold_bank *b,
-				 const char *buf, size_t count)
-{
-	cpumask_t oldmask;
-	oldmask = affinity_set(b->cpu);
-	threshold_restart_bank(b, 1, 0);
-	affinity_restore(oldmask);
-	return 1;
-}
-
-#define THRESHOLD_ATTR(_name,_mode,_show,_store) {            \
-        .attr = {.name = __stringify(_name), .mode = _mode }, \
-        .show = _show,                                        \
-        .store = _store,                                      \
-};
-
-#define ATTR_FIELDS(name) \
-        static struct threshold_attr name = \
-        THRESHOLD_ATTR(name, 0644, show_## name, store_## name)
-
-ATTR_FIELDS(interrupt_enable);
-ATTR_FIELDS(threshold_limit);
-ATTR_FIELDS(error_count);
-
-static struct attribute *default_attrs[] = {
-	&interrupt_enable.attr,
-	&threshold_limit.attr,
-	&error_count.attr,
-	NULL
-};
-
-#define to_bank(k) container_of(k,struct threshold_bank,kobj)
-#define to_attr(a) container_of(a,struct threshold_attr,attr)
-
-static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
-{
-	struct threshold_bank *b = to_bank(kobj);
-	struct threshold_attr *a = to_attr(attr);
-	ssize_t ret;
-	ret = a->show ? a->show(b, buf) : -EIO;
-	return ret;
-}
-
-static ssize_t store(struct kobject *kobj, struct attribute *attr,
-		     const char *buf, size_t count)
-{
-	struct threshold_bank *b = to_bank(kobj);
-	struct threshold_attr *a = to_attr(attr);
-	ssize_t ret;
-	ret = a->store ? a->store(b, buf, count) : -EIO;
-	return ret;
-}
-
-static struct sysfs_ops threshold_ops = {
-	.show = show,
-	.store = store,
-};
-
-static struct kobj_type threshold_ktype = {
-	.sysfs_ops = &threshold_ops,
-	.default_attrs = default_attrs,
-};
-
-/* symlinks sibling shared banks to first core.  first core owns dir/files. */
-static __cpuinit int threshold_create_bank(unsigned int cpu, int bank)
-{
-	int err = 0;
-	struct threshold_bank *b = NULL;
-
-#ifdef CONFIG_SMP
-	if (cpu_core_id[cpu] && shared_bank[bank]) {	/* symlink */
-		char name[16];
-		unsigned lcpu = first_cpu(cpu_core_map[cpu]);
-		if (cpu_core_id[lcpu])
-			goto out;	/* first core not up yet */
-
-		b = per_cpu(threshold_banks, lcpu)[bank];
-		if (!b)
-			goto out;
-		sprintf(name, "bank%i", bank);
-		err = sysfs_create_link(&per_cpu(device_threshold, cpu).kobj,
-					&b->kobj, name);
-		if (err)
-			goto out;
-		per_cpu(threshold_banks, cpu)[bank] = b;
-		goto out;
-	}
-#endif
-
-	b = kmalloc(sizeof(struct threshold_bank), GFP_KERNEL);
-	if (!b) {
-		err = -ENOMEM;
-		goto out;
-	}
-	memset(b, 0, sizeof(struct threshold_bank));
-
-	b->cpu = cpu;
-	b->bank = bank;
-	b->interrupt_enable = 0;
-	b->threshold_limit = THRESHOLD_MAX;
-	kobject_set_name(&b->kobj, "bank%i", bank);
-	b->kobj.parent = &per_cpu(device_threshold, cpu).kobj;
-	b->kobj.ktype = &threshold_ktype;
-
-	err = kobject_register(&b->kobj);
-	if (err) {
-		kfree(b);
-		goto out;
-	}
-	per_cpu(threshold_banks, cpu)[bank] = b;
-      out:
-	return err;
-}
-
-/* create dir/files for all valid threshold banks */
-static __cpuinit int threshold_create_device(unsigned int cpu)
-{
-	int bank;
-	int err = 0;
-
-	per_cpu(device_threshold, cpu).id = cpu;
-	per_cpu(device_threshold, cpu).cls = &threshold_sysclass;
-	err = sysdev_register(&per_cpu(device_threshold, cpu));
-	if (err)
-		goto out;
-
-	for (bank = 0; bank < NR_BANKS; ++bank) {
-		if (!(per_cpu(bank_map, cpu) & 1 << bank))
-			continue;
-		err = threshold_create_bank(cpu, bank);
-		if (err)
-			goto out;
-	}
-      out:
-	return err;
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-/*
- * let's be hotplug friendly.
- * in case of multiple core processors, the first core always takes ownership
- *   of shared sysfs dir/files, and rest of the cores will be symlinked to it.
- */
-
-/* cpu hotplug call removes all symlinks before first core dies */
-static __cpuinit void threshold_remove_bank(unsigned int cpu, int bank)
-{
-	struct threshold_bank *b;
-	char name[16];
-
-	b = per_cpu(threshold_banks, cpu)[bank];
-	if (!b)
-		return;
-	if (shared_bank[bank] && atomic_read(&b->kobj.kref.refcount) > 2) {
-		sprintf(name, "bank%i", bank);
-		sysfs_remove_link(&per_cpu(device_threshold, cpu).kobj, name);
-		per_cpu(threshold_banks, cpu)[bank] = NULL;
-	} else {
-		kobject_unregister(&b->kobj);
-		kfree(per_cpu(threshold_banks, cpu)[bank]);
-	}
-}
-
-static __cpuinit void threshold_remove_device(unsigned int cpu)
-{
-	int bank;
-
-	for (bank = 0; bank < NR_BANKS; ++bank) {
-		if (!(per_cpu(bank_map, cpu) & 1 << bank))
-			continue;
-		threshold_remove_bank(cpu, bank);
-	}
-	sysdev_unregister(&per_cpu(device_threshold, cpu));
-}
-
-/* link all existing siblings when first core comes up */
-static __cpuinit int threshold_create_symlinks(unsigned int cpu)
-{
-	int bank, err = 0;
-	unsigned int lcpu = 0;
-
-	if (cpu_core_id[cpu])
-		return 0;
-	for_each_cpu_mask(lcpu, cpu_core_map[cpu]) {
-		if (lcpu == cpu)
-			continue;
-		for (bank = 0; bank < NR_BANKS; ++bank) {
-			if (!(per_cpu(bank_map, cpu) & 1 << bank))
-				continue;
-			if (!shared_bank[bank])
-				continue;
-			err = threshold_create_bank(lcpu, bank);
-		}
-	}
-	return err;
-}
-
-/* remove all symlinks before first core dies. */
-static __cpuinit void threshold_remove_symlinks(unsigned int cpu)
-{
-	int bank;
-	unsigned int lcpu = 0;
-	if (cpu_core_id[cpu])
-		return;
-	for_each_cpu_mask(lcpu, cpu_core_map[cpu]) {
-		if (lcpu == cpu)
-			continue;
-		for (bank = 0; bank < NR_BANKS; ++bank) {
-			if (!(per_cpu(bank_map, cpu) & 1 << bank))
-				continue;
-			if (!shared_bank[bank])
-				continue;
-			threshold_remove_bank(lcpu, bank);
-		}
-	}
-}
-#else /* !CONFIG_HOTPLUG_CPU */
-static __cpuinit void threshold_create_symlinks(unsigned int cpu)
-{
-}
-static __cpuinit void threshold_remove_symlinks(unsigned int cpu)
-{
-}
-static void threshold_remove_device(unsigned int cpu)
-{
-}
-#endif
-
-/* get notified when a cpu comes on/off */
-static __cpuinit int threshold_cpu_callback(struct notifier_block *nfb,
-					    unsigned long action, void *hcpu)
-{
-	/* cpu was unsigned int to begin with */
-	unsigned int cpu = (unsigned long)hcpu;
-
-	if (cpu >= NR_CPUS)
-		goto out;
-
-	switch (action) {
-	case CPU_ONLINE:
-		threshold_create_device(cpu);
-		threshold_create_symlinks(cpu);
-		break;
-	case CPU_DOWN_PREPARE:
-		threshold_remove_symlinks(cpu);
-		break;
-	case CPU_DOWN_FAILED:
-		threshold_create_symlinks(cpu);
-		break;
-	case CPU_DEAD:
-		threshold_remove_device(cpu);
-		break;
-	default:
-		break;
-	}
-      out:
-	return NOTIFY_OK;
-}
-
-static struct notifier_block threshold_cpu_notifier = {
-	.notifier_call = threshold_cpu_callback,
-};
-
-static __init int threshold_init_device(void)
-{
-	int err;
-	int lcpu = 0;
-
-	err = sysdev_class_register(&threshold_sysclass);
-	if (err)
-		goto out;
-
-	/* to hit CPUs online before the notifier is up */
-	for_each_online_cpu(lcpu) {
-		err = threshold_create_device(lcpu);
-		if (err)
-			goto out;
-	}
-	register_cpu_notifier(&threshold_cpu_notifier);
-
-      out:
-	return err;
-}
-
-device_initcall(threshold_init_device);