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-rw-r--r--arch/x86/kernel/Makefile1
-rw-r--r--arch/x86/kernel/apic_32.c5
-rw-r--r--arch/x86/kernel/apic_64.c26
-rw-r--r--arch/x86/kernel/cpu/Makefile4
-rw-r--r--arch/x86/kernel/cpu/amd.c42
-rw-r--r--arch/x86/kernel/cpu/amd_64.c211
-rw-r--r--arch/x86/kernel/cpu/bugs_64.c (renamed from arch/x86/kernel/bugs_64.c)0
-rw-r--r--arch/x86/kernel/cpu/centaur_64.c43
-rw-r--r--arch/x86/kernel/cpu/cpu.h5
-rw-r--r--arch/x86/kernel/cpu/intel_64.c103
-rw-r--r--arch/x86/kernel/mmconf-fam10h_64.c1
-rw-r--r--arch/x86/kernel/process.c190
-rw-r--r--arch/x86/kernel/process_32.c61
-rw-r--r--arch/x86/kernel/process_64.c35
-rw-r--r--arch/x86/kernel/setup_64.c450
-rw-r--r--arch/x86/kernel/vmlinux_64.lds.S1
-rw-r--r--arch/x86/pci/Makefile_321
-rw-r--r--arch/x86/pci/Makefile_642
-rw-r--r--arch/x86/pci/amd_bus.c (renamed from arch/x86/pci/k8-bus_64.c)32
-rw-r--r--arch/x86/pci/direct.c25
-rw-r--r--arch/x86/pci/pci.h1
21 files changed, 666 insertions, 573 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 77807d4..3a2a54c 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -25,7 +25,6 @@ obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o
obj-y += bootflag.o e820_$(BITS).o
obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o
-obj-$(CONFIG_X86_64) += bugs_64.o
obj-y += tsc_$(BITS).o io_delay.o rtc.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index 4b99b1b..c44206e 100644
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -64,9 +64,8 @@ static int enable_local_apic __initdata;
/* Local APIC timer verification ok */
static int local_apic_timer_verify_ok;
-/* Disable local APIC timer from the kernel commandline or via dmi quirk
- or using CPU MSR check */
-int local_apic_timer_disabled;
+/* Disable local APIC timer from the kernel commandline or via dmi quirk */
+static int local_apic_timer_disabled;
/* Local APIC timer works in C2 */
int local_apic_timer_c2_ok;
EXPORT_SYMBOL_GPL(local_apic_timer_c2_ok);
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 0633cfd..a5cc844 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -43,7 +43,7 @@
#include <mach_ipi.h>
#include <mach_apic.h>
-int disable_apic_timer __cpuinitdata;
+static int disable_apic_timer __cpuinitdata;
static int apic_calibrate_pmtmr __initdata;
int disable_apic;
@@ -422,32 +422,8 @@ void __init setup_boot_APIC_clock(void)
setup_APIC_timer();
}
-/*
- * AMD C1E enabled CPUs have a real nasty problem: Some BIOSes set the
- * C1E flag only in the secondary CPU, so when we detect the wreckage
- * we already have enabled the boot CPU local apic timer. Check, if
- * disable_apic_timer is set and the DUMMY flag is cleared. If yes,
- * set the DUMMY flag again and force the broadcast mode in the
- * clockevents layer.
- */
-static void __cpuinit check_boot_apic_timer_broadcast(void)
-{
- if (!disable_apic_timer ||
- (lapic_clockevent.features & CLOCK_EVT_FEAT_DUMMY))
- return;
-
- printk(KERN_INFO "AMD C1E detected late. Force timer broadcast.\n");
- lapic_clockevent.features |= CLOCK_EVT_FEAT_DUMMY;
-
- local_irq_enable();
- clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_FORCE,
- &boot_cpu_physical_apicid);
- local_irq_disable();
-}
-
void __cpuinit setup_secondary_APIC_clock(void)
{
- check_boot_apic_timer_broadcast();
setup_APIC_timer();
}
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index a0c6f81..65b1be5 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -6,11 +6,15 @@ obj-y := intel_cacheinfo.o addon_cpuid_features.o
obj-y += proc.o feature_names.o
obj-$(CONFIG_X86_32) += common.o bugs.o
+obj-$(CONFIG_X86_64) += bugs_64.o
obj-$(CONFIG_X86_32) += amd.o
+obj-$(CONFIG_X86_64) += amd_64.o
obj-$(CONFIG_X86_32) += cyrix.o
obj-$(CONFIG_X86_32) += centaur.o
+obj-$(CONFIG_X86_64) += centaur_64.o
obj-$(CONFIG_X86_32) += transmeta.o
obj-$(CONFIG_X86_32) += intel.o
+obj-$(CONFIG_X86_64) += intel_64.o
obj-$(CONFIG_X86_32) += umc.o
obj-$(CONFIG_X86_MCE) += mcheck/
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 2458668..81a07ca 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -24,43 +24,6 @@
extern void vide(void);
__asm__(".align 4\nvide: ret");
-#ifdef CONFIG_X86_LOCAL_APIC
-#define ENABLE_C1E_MASK 0x18000000
-#define CPUID_PROCESSOR_SIGNATURE 1
-#define CPUID_XFAM 0x0ff00000
-#define CPUID_XFAM_K8 0x00000000
-#define CPUID_XFAM_10H 0x00100000
-#define CPUID_XFAM_11H 0x00200000
-#define CPUID_XMOD 0x000f0000
-#define CPUID_XMOD_REV_F 0x00040000
-
-/* AMD systems with C1E don't have a working lAPIC timer. Check for that. */
-static __cpuinit int amd_apic_timer_broken(void)
-{
- u32 lo, hi;
- u32 eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE);
- switch (eax & CPUID_XFAM) {
- case CPUID_XFAM_K8:
- if ((eax & CPUID_XMOD) < CPUID_XMOD_REV_F)
- break;
- case CPUID_XFAM_10H:
- case CPUID_XFAM_11H:
- rdmsr(MSR_K8_ENABLE_C1E, lo, hi);
- if (lo & ENABLE_C1E_MASK) {
- if (smp_processor_id() != boot_cpu_physical_apicid)
- printk(KERN_INFO "AMD C1E detected late. "
- " Force timer broadcast.\n");
- return 1;
- }
- break;
- default:
- /* err on the side of caution */
- return 1;
- }
- return 0;
-}
-#endif
-
int force_mwait __cpuinitdata;
static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
@@ -297,11 +260,6 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
num_cache_leaves = 3;
}
-#ifdef CONFIG_X86_LOCAL_APIC
- if (amd_apic_timer_broken())
- local_apic_timer_disabled = 1;
-#endif
-
/* K6s reports MCEs but don't actually have all the MSRs */
if (c->x86 < 6)
clear_cpu_cap(c, X86_FEATURE_MCE);
diff --git a/arch/x86/kernel/cpu/amd_64.c b/arch/x86/kernel/cpu/amd_64.c
new file mode 100644
index 0000000..30b7557
--- /dev/null
+++ b/arch/x86/kernel/cpu/amd_64.c
@@ -0,0 +1,211 @@
+#include <linux/init.h>
+#include <linux/mm.h>
+
+#include <asm/numa_64.h>
+#include <asm/mmconfig.h>
+#include <asm/cacheflush.h>
+
+#include <mach_apic.h>
+
+#include "cpu.h"
+
+int force_mwait __cpuinitdata;
+
+#ifdef CONFIG_NUMA
+static int __cpuinit nearby_node(int apicid)
+{
+ int i, node;
+
+ for (i = apicid - 1; i >= 0; i--) {
+ node = apicid_to_node[i];
+ if (node != NUMA_NO_NODE && node_online(node))
+ return node;
+ }
+ for (i = apicid + 1; i < MAX_LOCAL_APIC; i++) {
+ node = apicid_to_node[i];
+ if (node != NUMA_NO_NODE && node_online(node))
+ return node;
+ }
+ return first_node(node_online_map); /* Shouldn't happen */
+}
+#endif
+
+/*
+ * On a AMD dual core setup the lower bits of the APIC id distingush the cores.
+ * Assumes number of cores is a power of two.
+ */
+static void __cpuinit amd_detect_cmp(struct cpuinfo_x86 *c)
+{
+#ifdef CONFIG_SMP
+ unsigned bits;
+#ifdef CONFIG_NUMA
+ int cpu = smp_processor_id();
+ int node = 0;
+ unsigned apicid = hard_smp_processor_id();
+#endif
+ bits = c->x86_coreid_bits;
+
+ /* Low order bits define the core id (index of core in socket) */
+ c->cpu_core_id = c->initial_apicid & ((1 << bits)-1);
+ /* Convert the initial APIC ID into the socket ID */
+ c->phys_proc_id = c->initial_apicid >> bits;
+
+#ifdef CONFIG_NUMA
+ node = c->phys_proc_id;
+ if (apicid_to_node[apicid] != NUMA_NO_NODE)
+ node = apicid_to_node[apicid];
+ if (!node_online(node)) {
+ /* Two possibilities here:
+ - The CPU is missing memory and no node was created.
+ In that case try picking one from a nearby CPU
+ - The APIC IDs differ from the HyperTransport node IDs
+ which the K8 northbridge parsing fills in.
+ Assume they are all increased by a constant offset,
+ but in the same order as the HT nodeids.
+ If that doesn't result in a usable node fall back to the
+ path for the previous case. */
+
+ int ht_nodeid = c->initial_apicid;
+
+ if (ht_nodeid >= 0 &&
+ apicid_to_node[ht_nodeid] != NUMA_NO_NODE)
+ node = apicid_to_node[ht_nodeid];
+ /* Pick a nearby node */
+ if (!node_online(node))
+ node = nearby_node(apicid);
+ }
+ numa_set_node(cpu, node);
+
+ printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node);
+#endif
+#endif
+}
+
+static void __cpuinit early_init_amd_mc(struct cpuinfo_x86 *c)
+{
+#ifdef CONFIG_SMP
+ unsigned bits, ecx;
+
+ /* Multi core CPU? */
+ if (c->extended_cpuid_level < 0x80000008)
+ return;
+
+ ecx = cpuid_ecx(0x80000008);
+
+ c->x86_max_cores = (ecx & 0xff) + 1;
+
+ /* CPU telling us the core id bits shift? */
+ bits = (ecx >> 12) & 0xF;
+
+ /* Otherwise recompute */
+ if (bits == 0) {
+ while ((1 << bits) < c->x86_max_cores)
+ bits++;
+ }
+
+ c->x86_coreid_bits = bits;
+
+#endif
+}
+
+static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
+{
+ early_init_amd_mc(c);
+
+ /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */
+ if (c->x86_power & (1<<8))
+ set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+}
+
+static void __cpuinit init_amd(struct cpuinfo_x86 *c)
+{
+ unsigned level;
+
+#ifdef CONFIG_SMP
+ unsigned long value;
+
+ /*
+ * Disable TLB flush filter by setting HWCR.FFDIS on K8
+ * bit 6 of msr C001_0015
+ *
+ * Errata 63 for SH-B3 steppings
+ * Errata 122 for all steppings (F+ have it disabled by default)
+ */
+ if (c->x86 == 15) {
+ rdmsrl(MSR_K8_HWCR, value);
+ value |= 1 << 6;
+ wrmsrl(MSR_K8_HWCR, value);
+ }
+#endif
+
+ /* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
+ 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */
+ clear_cpu_cap(c, 0*32+31);
+
+ /* On C+ stepping K8 rep microcode works well for copy/memset */
+ level = cpuid_eax(1);
+ if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) ||
+ level >= 0x0f58))
+ set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+ if (c->x86 == 0x10 || c->x86 == 0x11)
+ set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+
+ /* Enable workaround for FXSAVE leak */
+ if (c->x86 >= 6)
+ set_cpu_cap(c, X86_FEATURE_FXSAVE_LEAK);
+
+ level = get_model_name(c);
+ if (!level) {
+ switch (c->x86) {
+ case 15:
+ /* Should distinguish Models here, but this is only
+ a fallback anyways. */
+ strcpy(c->x86_model_id, "Hammer");
+ break;
+ }
+ }
+ display_cacheinfo(c);
+
+ /* Multi core CPU? */
+ if (c->extended_cpuid_level >= 0x80000008)
+ amd_detect_cmp(c);
+
+ if (c->extended_cpuid_level >= 0x80000006 &&
+ (cpuid_edx(0x80000006) & 0xf000))
+ num_cache_leaves = 4;
+ else
+ num_cache_leaves = 3;
+
+ if (c->x86 == 0xf || c->x86 == 0x10 || c->x86 == 0x11)
+ set_cpu_cap(c, X86_FEATURE_K8);
+
+ /* MFENCE stops RDTSC speculation */
+ set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC);
+
+ if (c->x86 == 0x10)
+ fam10h_check_enable_mmcfg();
+
+ if (c == &boot_cpu_data && c->x86 >= 0xf && c->x86 <= 0x11) {
+ unsigned long long tseg;
+
+ /*
+ * Split up direct mapping around the TSEG SMM area.
+ * Don't do it for gbpages because there seems very little
+ * benefit in doing so.
+ */
+ if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg) &&
+ (tseg >> PMD_SHIFT) <
+ (max_pfn_mapped >> (PMD_SHIFT-PAGE_SHIFT)))
+ set_memory_4k((unsigned long)__va(tseg), 1);
+ }
+}
+
+static struct cpu_dev amd_cpu_dev __cpuinitdata = {
+ .c_vendor = "AMD",
+ .c_ident = { "AuthenticAMD" },
+ .c_early_init = early_init_amd,
+ .c_init = init_amd,
+};
+
+cpu_vendor_dev_register(X86_VENDOR_AMD, &amd_cpu_dev);
+
diff --git a/arch/x86/kernel/bugs_64.c b/arch/x86/kernel/cpu/bugs_64.c
index 9a3ed06..9a3ed06 100644
--- a/arch/x86/kernel/bugs_64.c
+++ b/arch/x86/kernel/cpu/bugs_64.c
diff --git a/arch/x86/kernel/cpu/centaur_64.c b/arch/x86/kernel/cpu/centaur_64.c
new file mode 100644
index 0000000..13526fd
--- /dev/null
+++ b/arch/x86/kernel/cpu/centaur_64.c
@@ -0,0 +1,43 @@
+#include <linux/init.h>
+#include <linux/smp.h>
+
+#include <asm/cpufeature.h>
+#include <asm/processor.h>
+
+#include "cpu.h"
+
+static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
+{
+ if (c->x86 == 0x6 && c->x86_model >= 0xf)
+ set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+}
+
+static void __cpuinit init_centaur(struct cpuinfo_x86 *c)
+{
+ /* Cache sizes */
+ unsigned n;
+
+ n = c->extended_cpuid_level;
+ if (n >= 0x80000008) {
+ unsigned eax = cpuid_eax(0x80000008);
+ c->x86_virt_bits = (eax >> 8) & 0xff;
+ c->x86_phys_bits = eax & 0xff;
+ }
+
+ if (c->x86 == 0x6 && c->x86_model >= 0xf) {
+ c->x86_cache_alignment = c->x86_clflush_size * 2;
+ set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+ set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+ }
+ set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
+}
+
+static struct cpu_dev centaur_cpu_dev __cpuinitdata = {
+ .c_vendor = "Centaur",
+ .c_ident = { "CentaurHauls" },
+ .c_early_init = early_init_centaur,
+ .c_init = init_centaur,
+};
+
+cpu_vendor_dev_register(X86_VENDOR_CENTAUR, &centaur_cpu_dev);
+
diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h
index 783691b..4d894e8 100644
--- a/arch/x86/kernel/cpu/cpu.h
+++ b/arch/x86/kernel/cpu/cpu.h
@@ -1,3 +1,6 @@
+#ifndef ARCH_X86_CPU_H
+
+#define ARCH_X86_CPU_H
struct cpu_model_info {
int vendor;
@@ -36,3 +39,5 @@ extern struct cpu_vendor_dev __x86cpuvendor_start[], __x86cpuvendor_end[];
extern int get_model_name(struct cpuinfo_x86 *c);
extern void display_cacheinfo(struct cpuinfo_x86 *c);
+
+#endif
diff --git a/arch/x86/kernel/cpu/intel_64.c b/arch/x86/kernel/cpu/intel_64.c
new file mode 100644
index 0000000..fcb1cc9
--- /dev/null
+++ b/arch/x86/kernel/cpu/intel_64.c
@@ -0,0 +1,103 @@
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <asm/processor.h>
+#include <asm/ptrace.h>
+#include <asm/topology.h>
+#include <asm/numa_64.h>
+
+#include "cpu.h"
+
+static void __cpuinit early_init_intel(struct cpuinfo_x86 *c)
+{
+ if ((c->x86 == 0xf && c->x86_model >= 0x03) ||
+ (c->x86 == 0x6 && c->x86_model >= 0x0e))
+ set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+}
+
+/*
+ * find out the number of processor cores on the die
+ */
+static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c)
+{
+ unsigned int eax, t;
+
+ if (c->cpuid_level < 4)
+ return 1;
+
+ cpuid_count(4, 0, &eax, &t, &t, &t);
+
+ if (eax & 0x1f)
+ return ((eax >> 26) + 1);
+ else
+ return 1;
+}
+
+static void __cpuinit srat_detect_node(void)
+{
+#ifdef CONFIG_NUMA
+ unsigned node;
+ int cpu = smp_processor_id();
+ int apicid = hard_smp_processor_id();
+
+ /* Don't do the funky fallback heuristics the AMD version employs
+ for now. */
+ node = apicid_to_node[apicid];
+ if (node == NUMA_NO_NODE || !node_online(node))
+ node = first_node(node_online_map);
+ numa_set_node(cpu, node);
+
+ printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node);
+#endif
+}
+
+static void __cpuinit init_intel(struct cpuinfo_x86 *c)
+{
+ /* Cache sizes */
+ unsigned n;
+
+ init_intel_cacheinfo(c);
+ if (c->cpuid_level > 9) {
+ unsigned eax = cpuid_eax(10);
+ /* Check for version and the number of counters */
+ if ((eax & 0xff) && (((eax>>8) & 0xff) > 1))
+ set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON);
+ }
+
+ if (cpu_has_ds) {
+ unsigned int l1, l2;
+ rdmsr(MSR_IA32_MISC_ENABLE, l1, l2);
+ if (!(l1 & (1<<11)))
+ set_cpu_cap(c, X86_FEATURE_BTS);
+ if (!(l1 & (1<<12)))
+ set_cpu_cap(c, X86_FEATURE_PEBS);
+ }
+
+
+ if (cpu_has_bts)
+ ds_init_intel(c);
+
+ n = c->extended_cpuid_level;
+ if (n >= 0x80000008) {
+ unsigned eax = cpuid_eax(0x80000008);
+ c->x86_virt_bits = (eax >> 8) & 0xff;
+ c->x86_phys_bits = eax & 0xff;
+ }
+
+ if (c->x86 == 15)
+ c->x86_cache_alignment = c->x86_clflush_size * 2;
+ if (c->x86 == 6)
+ set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+ set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
+ c->x86_max_cores = intel_num_cpu_cores(c);
+
+ srat_detect_node();
+}
+
+static struct cpu_dev intel_cpu_dev __cpuinitdata = {
+ .c_vendor = "Intel",
+ .c_ident = { "GenuineIntel" },
+ .c_early_init = early_init_intel,
+ .c_init = init_intel,
+};
+cpu_vendor_dev_register(X86_VENDOR_INTEL, &intel_cpu_dev);
+
diff --git a/arch/x86/kernel/mmconf-fam10h_64.c b/arch/x86/kernel/mmconf-fam10h_64.c
index edc5fbf..fdfdc55 100644
--- a/arch/x86/kernel/mmconf-fam10h_64.c
+++ b/arch/x86/kernel/mmconf-fam10h_64.c
@@ -12,6 +12,7 @@
#include <asm/io.h>
#include <asm/msr.h>
#include <asm/acpi.h>
+#include <asm/mmconfig.h>
#include "../pci/pci.h"
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index ba370dc..4061d63 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -6,6 +6,7 @@
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/pm.h>
+#include <linux/clockchips.h>
struct kmem_cache *task_xstate_cachep;
@@ -45,6 +46,76 @@ void arch_task_cache_init(void)
SLAB_PANIC, NULL);
}
+/*
+ * Idle related variables and functions
+ */
+unsigned long boot_option_idle_override = 0;
+EXPORT_SYMBOL(boot_option_idle_override);
+
+/*
+ * Powermanagement idle function, if any..
+ */
+void (*pm_idle)(void);
+EXPORT_SYMBOL(pm_idle);
+
+#ifdef CONFIG_X86_32
+/*
+ * This halt magic was a workaround for ancient floppy DMA
+ * wreckage. It should be safe to remove.
+ */
+static int hlt_counter;
+void disable_hlt(void)
+{
+ hlt_counter++;
+}
+EXPORT_SYMBOL(disable_hlt);
+
+void enable_hlt(void)
+{
+ hlt_counter--;
+}
+EXPORT_SYMBOL(enable_hlt);
+
+static inline int hlt_use_halt(void)
+{
+ return (!hlt_counter && boot_cpu_data.hlt_works_ok);
+}
+#else
+static inline int hlt_use_halt(void)
+{
+ return 1;
+}
+#endif
+
+/*
+ * We use this if we don't have any better
+ * idle routine..
+ */
+void default_idle(void)
+{
+ if (hlt_use_halt()) {
+ current_thread_info()->status &= ~TS_POLLING;
+ /*
+ * TS_POLLING-cleared state must be visible before we
+ * test NEED_RESCHED:
+ */
+ smp_mb();
+
+ if (!need_resched())
+ safe_halt(); /* enables interrupts racelessly */
+ else
+ local_irq_enable();
+ current_thread_info()->status |= TS_POLLING;
+ } else {
+ local_irq_enable();
+ /* loop is done by the caller */
+ cpu_relax();
+ }
+}
+#ifdef CONFIG_APM_MODULE
+EXPORT_SYMBOL(default_idle);
+#endif
+
static void do_nothing(void *unused)
{
}
@@ -122,44 +193,129 @@ static void poll_idle(void)
*
* idle=mwait overrides this decision and forces the usage of mwait.
*/
+
+#define MWAIT_INFO 0x05
+#define MWAIT_ECX_EXTENDED_INFO 0x01
+#define MWAIT_EDX_C1 0xf0
+
static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
{
+ u32 eax, ebx, ecx, edx;
+
if (force_mwait)
return 1;
- if (c->x86_vendor == X86_VENDOR_AMD) {
- switch(c->x86) {
- case 0x10:
- case 0x11:
- return 0;
- }
- }
+ if (c->cpuid_level < MWAIT_INFO)
+ return 0;
+
+ cpuid(MWAIT_INFO, &eax, &ebx, &ecx, &edx);
+ /* Check, whether EDX has extended info about MWAIT */
+ if (!(ecx & MWAIT_ECX_EXTENDED_INFO))
+ return 1;
+
+ /*
+ * edx enumeratios MONITOR/MWAIT extensions. Check, whether
+ * C1 supports MWAIT
+ */
+ return (edx & MWAIT_EDX_C1);
+}
+
+/*
+ * Check for AMD CPUs, which have potentially C1E support
+ */
+static int __cpuinit check_c1e_idle(const struct cpuinfo_x86 *c)
+{
+ if (c->x86_vendor != X86_VENDOR_AMD)
+ return 0;
+
+ if (c->x86 < 0x0F)
+ return 0;
+
+ /* Family 0x0f models < rev F do not have C1E */
+ if (c->x86 == 0x0f && c->x86_model < 0x40)
+ return 0;
+
return 1;
}
-void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
+/*
+ * C1E aware idle routine. We check for C1E active in the interrupt
+ * pending message MSR. If we detect C1E, then we handle it the same
+ * way as C3 power states (local apic timer and TSC stop)
+ */
+static void c1e_idle(void)
{
- static int selected;
+ static cpumask_t c1e_mask = CPU_MASK_NONE;
+ static int c1e_detected;
- if (selected)
+ if (need_resched())
return;
+
+ if (!c1e_detected) {
+ u32 lo, hi;
+
+ rdmsr(MSR_K8_INT_PENDING_MSG, lo, hi);
+ if (lo & K8_INTP_C1E_ACTIVE_MASK) {
+ c1e_detected = 1;
+ mark_tsc_unstable("TSC halt in C1E");
+ printk(KERN_INFO "System has C1E enabled\n");
+ }
+ }
+
+ if (c1e_detected) {
+ int cpu = smp_processor_id();
+
+ if (!cpu_isset(cpu, c1e_mask)) {
+ cpu_set(cpu, c1e_mask);
+ /*
+ * Force broadcast so ACPI can not interfere. Needs
+ * to run with interrupts enabled as it uses
+ * smp_function_call.
+ */
+ local_irq_enable();
+ clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_FORCE,
+ &cpu);
+ printk(KERN_INFO "Switch to broadcast mode on CPU%d\n",
+ cpu);
+ local_irq_disable();
+ }
+ clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &cpu);
+
+ default_idle();
+
+ /*
+ * The switch back from broadcast mode needs to be
+ * called with interrupts disabled.
+ */
+ local_irq_disable();
+ clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &cpu);
+ local_irq_enable();
+ } else
+ default_idle();
+}
+
+void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
+{
#ifdef CONFIG_X86_SMP
if (pm_idle == poll_idle && smp_num_siblings > 1) {
printk(KERN_WARNING "WARNING: polling idle and HT enabled,"
" performance may degrade.\n");
}
#endif
+ if (pm_idle)
+ return;
+
if (cpu_has(c, X86_FEATURE_MWAIT) && mwait_usable(c)) {
/*
- * Skip, if setup has overridden idle.
* One CPU supports mwait => All CPUs supports mwait
*/
- if (!pm_idle) {
- printk(KERN_INFO "using mwait in idle threads.\n");
- pm_idle = mwait_idle;
- }
- }
- selected = 1;
+ printk(KERN_INFO "using mwait in idle threads.\n");
+ pm_idle = mwait_idle;
+ } else if (check_c1e_idle(c)) {
+ printk(KERN_INFO "using C1E aware idle routine\n");
+ pm_idle = c1e_idle;
+ } else
+ pm_idle = default_idle;
}
static int __init idle_setup(char *str)
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index e2db9ac..c2a11d7 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -58,11 +58,6 @@
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
-static int hlt_counter;
-
-unsigned long boot_option_idle_override = 0;
-EXPORT_SYMBOL(boot_option_idle_override);
-
DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task;
EXPORT_PER_CPU_SYMBOL(current_task);
@@ -77,55 +72,6 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return ((unsigned long *)tsk->thread.sp)[3];
}
-/*
- * Powermanagement idle function, if any..
- */
-void (*pm_idle)(void);
-EXPORT_SYMBOL(pm_idle);
-
-void disable_hlt(void)
-{
- hlt_counter++;
-}
-
-EXPORT_SYMBOL(disable_hlt);
-
-void enable_hlt(void)
-{
- hlt_counter--;
-}
-
-EXPORT_SYMBOL(enable_hlt);
-
-/*
- * We use this if we don't have any better
- * idle routine..
- */
-void default_idle(void)
-{
- if (!hlt_counter && boot_cpu_data.hlt_works_ok) {
- current_thread_info()->status &= ~TS_POLLING;
- /*
- * TS_POLLING-cleared state must be visible before we
- * test NEED_RESCHED:
- */
- smp_mb();
-
- if (!need_resched())
- safe_halt(); /* enables interrupts racelessly */
- else
- local_irq_enable();
- current_thread_info()->status |= TS_POLLING;
- } else {
- local_irq_enable();
- /* loop is done by the caller */
- cpu_relax();
- }
-}
-#ifdef CONFIG_APM_MODULE
-EXPORT_SYMBOL(default_idle);
-#endif
-
#ifdef CONFIG_HOTPLUG_CPU
#include <asm/nmi.h>
/* We don't actually take CPU down, just spin without interrupts. */
@@ -168,24 +114,19 @@ void cpu_idle(void)
while (1) {
tick_nohz_stop_sched_tick();
while (!need_resched()) {
- void (*idle)(void);
check_pgt_cache();
rmb();
- idle = pm_idle;
if (rcu_pending(cpu))
rcu_check_callbacks(cpu, 0);
- if (!idle)
- idle = default_idle;
-
if (cpu_is_offline(cpu))
play_dead();
local_irq_disable();
__get_cpu_var(irq_stat).idle_timestamp = jiffies;
- idle();
+ pm_idle();
}
tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index c6eb5c9..290183e 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -56,15 +56,6 @@ asmlinkage extern void ret_from_fork(void);
unsigned long kernel_thread_flags = CLONE_VM | CLONE_UNTRACED;
-unsigned long boot_option_idle_override = 0;
-EXPORT_SYMBOL(boot_option_idle_override);
-
-/*
- * Powermanagement idle function, if any..
- */
-void (*pm_idle)(void);
-EXPORT_SYMBOL(pm_idle);
-
static ATOMIC_NOTIFIER_HEAD(idle_notifier);
void idle_notifier_register(struct notifier_block *n)
@@ -94,25 +85,6 @@ void exit_idle(void)
__exit_idle();
}
-/*
- * We use this if we don't have any better
- * idle routine..
- */
-void default_idle(void)
-{
- current_thread_info()->status &= ~TS_POLLING;
- /*
- * TS_POLLING-cleared state must be visible before we
- * test NEED_RESCHED:
- */
- smp_mb();
- if (!need_resched())
- safe_halt(); /* enables interrupts racelessly */
- else
- local_irq_enable();
- current_thread_info()->status |= TS_POLLING;
-}
-
#ifdef CONFIG_HOTPLUG_CPU
DECLARE_PER_CPU(int, cpu_state);
@@ -150,12 +122,9 @@ void cpu_idle(void)
while (1) {
tick_nohz_stop_sched_tick();
while (!need_resched()) {
- void (*idle)(void);
rmb();
- idle = pm_idle;
- if (!idle)
- idle = default_idle;
+
if (cpu_is_offline(smp_processor_id()))
play_dead();
/*
@@ -165,7 +134,7 @@ void cpu_idle(void)
*/
local_irq_disable();
enter_idle();
- idle();
+ pm_idle();
/* In many cases the interrupt that ended idle
has already called exit_idle. But some idle
loops can be woken up without interrupt. */
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 6dff128..b789ec5 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -71,6 +71,7 @@
#include <asm/topology.h>
#include <asm/trampoline.h>
#include <asm/pat.h>
+#include <asm/mmconfig.h>
#include <mach_apic.h>
#ifdef CONFIG_PARAVIRT
@@ -79,6 +80,8 @@
#define ARCH_SETUP
#endif
+#include "cpu/cpu.h"
+
/*
* Machine setup..
*/
@@ -95,8 +98,6 @@ int bootloader_type;
unsigned long saved_video_mode;
-int force_mwait __cpuinitdata;
-
/*
* Early DMI memory
*/
@@ -164,6 +165,7 @@ static struct resource bss_resource = {
.flags = IORESOURCE_RAM,
};
+static void __init early_cpu_init(void);
static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c);
#ifdef CONFIG_PROC_VMCORE
@@ -293,18 +295,6 @@ static void __init parse_setup_data(void)
}
}
-#ifdef CONFIG_PCI_MMCONFIG
-extern void __cpuinit fam10h_check_enable_mmcfg(void);
-extern void __init check_enable_amd_mmconf_dmi(void);
-#else
-void __cpuinit fam10h_check_enable_mmcfg(void)
-{
-}
-void __init check_enable_amd_mmconf_dmi(void)
-{
-}
-#endif
-
/*
* setup_arch - architecture-specific boot-time initializations
*
@@ -352,6 +342,7 @@ void __init setup_arch(char **cmdline_p)
bss_resource.start = virt_to_phys(&__bss_start);
bss_resource.end = virt_to_phys(&__bss_stop)-1;
+ early_cpu_init();
early_identify_cpu(&boot_cpu_data);
strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
@@ -537,7 +528,20 @@ void __init setup_arch(char **cmdline_p)
check_enable_amd_mmconf_dmi();
}
-static int __cpuinit get_model_name(struct cpuinfo_x86 *c)
+struct cpu_dev *cpu_devs[X86_VENDOR_NUM] = {};
+
+static void __cpuinit default_init(struct cpuinfo_x86 *c)
+{
+ display_cacheinfo(c);
+}
+
+static struct cpu_dev __cpuinitdata default_cpu = {
+ .c_init = default_init,
+ .c_vendor = "Unknown",
+};
+static struct cpu_dev *this_cpu __cpuinitdata = &default_cpu;
+
+int __cpuinit get_model_name(struct cpuinfo_x86 *c)
{
unsigned int *v;
@@ -553,7 +557,7 @@ static int __cpuinit get_model_name(struct cpuinfo_x86 *c)
}
-static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c)
+void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c)
{
unsigned int n, dummy, eax, ebx, ecx, edx;
@@ -585,228 +589,6 @@ static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c)
}
}
-#ifdef CONFIG_NUMA
-static int __cpuinit nearby_node(int apicid)
-{
- int i, node;
-
- for (i = apicid - 1; i >= 0; i--) {
- node = apicid_to_node[i];
- if (node != NUMA_NO_NODE && node_online(node))
- return node;
- }
- for (i = apicid + 1; i < MAX_LOCAL_APIC; i++) {
- node = apicid_to_node[i];
- if (node != NUMA_NO_NODE && node_online(node))
- return node;
- }
- return first_node(node_online_map); /* Shouldn't happen */
-}
-#endif
-
-/*
- * On a AMD dual core setup the lower bits of the APIC id distingush the cores.
- * Assumes number of cores is a power of two.
- */
-static void __cpuinit amd_detect_cmp(struct cpuinfo_x86 *c)
-{
-#ifdef CONFIG_SMP
- unsigned bits;
-#ifdef CONFIG_NUMA
- int cpu = smp_processor_id();
- int node = 0;
- unsigned apicid = hard_smp_processor_id();
-#endif
- bits = c->x86_coreid_bits;
-
- /* Low order bits define the core id (index of core in socket) */
- c->cpu_core_id = c->initial_apicid & ((1 << bits)-1);
- /* Convert the initial APIC ID into the socket ID */
- c->phys_proc_id = c->initial_apicid >> bits;
-
-#ifdef CONFIG_NUMA
- node = c->phys_proc_id;
- if (apicid_to_node[apicid] != NUMA_NO_NODE)
- node = apicid_to_node[apicid];
- if (!node_online(node)) {
- /* Two possibilities here:
- - The CPU is missing memory and no node was created.
- In that case try picking one from a nearby CPU
- - The APIC IDs differ from the HyperTransport node IDs
- which the K8 northbridge parsing fills in.
- Assume they are all increased by a constant offset,
- but in the same order as the HT nodeids.
- If that doesn't result in a usable node fall back to the
- path for the previous case. */
-
- int ht_nodeid = c->initial_apicid;
-
- if (ht_nodeid >= 0 &&
- apicid_to_node[ht_nodeid] != NUMA_NO_NODE)
- node = apicid_to_node[ht_nodeid];
- /* Pick a nearby node */
- if (!node_online(node))
- node = nearby_node(apicid);
- }
- numa_set_node(cpu, node);
-
- printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node);
-#endif
-#endif
-}
-
-static void __cpuinit early_init_amd_mc(struct cpuinfo_x86 *c)
-{
-#ifdef CONFIG_SMP
- unsigned bits, ecx;
-
- /* Multi core CPU? */
- if (c->extended_cpuid_level < 0x80000008)
- return;
-
- ecx = cpuid_ecx(0x80000008);
-
- c->x86_max_cores = (ecx & 0xff) + 1;
-
- /* CPU telling us the core id bits shift? */
- bits = (ecx >> 12) & 0xF;
-
- /* Otherwise recompute */
- if (bits == 0) {
- while ((1 << bits) < c->x86_max_cores)
- bits++;
- }
-
- c->x86_coreid_bits = bits;
-
-#endif
-}
-
-#define ENABLE_C1E_MASK 0x18000000
-#define CPUID_PROCESSOR_SIGNATURE 1
-#define CPUID_XFAM 0x0ff00000
-#define CPUID_XFAM_K8 0x00000000
-#define CPUID_XFAM_10H 0x00100000
-#define CPUID_XFAM_11H 0x00200000
-#define CPUID_XMOD 0x000f0000
-#define CPUID_XMOD_REV_F 0x00040000
-
-/* AMD systems with C1E don't have a working lAPIC timer. Check for that. */
-static __cpuinit int amd_apic_timer_broken(void)
-{
- u32 lo, hi, eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE);
-
- switch (eax & CPUID_XFAM) {
- case CPUID_XFAM_K8:
- if ((eax & CPUID_XMOD) < CPUID_XMOD_REV_F)
- break;
- case CPUID_XFAM_10H:
- case CPUID_XFAM_11H:
- rdmsr(MSR_K8_ENABLE_C1E, lo, hi);
- if (lo & ENABLE_C1E_MASK)
- return 1;
- break;
- default:
- /* err on the side of caution */
- return 1;
- }
- return 0;
-}
-
-static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
-{
- early_init_amd_mc(c);
-
- /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */
- if (c->x86_power & (1<<8))
- set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
-}
-
-static void __cpuinit init_amd(struct cpuinfo_x86 *c)
-{
- unsigned level;
-
-#ifdef CONFIG_SMP
- unsigned long value;
-
- /*
- * Disable TLB flush filter by setting HWCR.FFDIS on K8
- * bit 6 of msr C001_0015
- *
- * Errata 63 for SH-B3 steppings
- * Errata 122 for all steppings (F+ have it disabled by default)
- */
- if (c->x86 == 15) {
- rdmsrl(MSR_K8_HWCR, value);
- value |= 1 << 6;
- wrmsrl(MSR_K8_HWCR, value);
- }
-#endif
-
- /* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
- 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */
- clear_cpu_cap(c, 0*32+31);
-
- /* On C+ stepping K8 rep microcode works well for copy/memset */
- level = cpuid_eax(1);
- if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) ||
- level >= 0x0f58))
- set_cpu_cap(c, X86_FEATURE_REP_GOOD);
- if (c->x86 == 0x10 || c->x86 == 0x11)
- set_cpu_cap(c, X86_FEATURE_REP_GOOD);
-
- /* Enable workaround for FXSAVE leak */
- if (c->x86 >= 6)
- set_cpu_cap(c, X86_FEATURE_FXSAVE_LEAK);
-
- level = get_model_name(c);
- if (!level) {
- switch (c->x86) {
- case 15:
- /* Should distinguish Models here, but this is only
- a fallback anyways. */
- strcpy(c->x86_model_id, "Hammer");
- break;
- }
- }
- display_cacheinfo(c);
-
- /* Multi core CPU? */
- if (c->extended_cpuid_level >= 0x80000008)
- amd_detect_cmp(c);
-
- if (c->extended_cpuid_level >= 0x80000006 &&
- (cpuid_edx(0x80000006) & 0xf000))
- num_cache_leaves = 4;
- else
- num_cache_leaves = 3;
-
- if (c->x86 == 0xf || c->x86 == 0x10 || c->x86 == 0x11)
- set_cpu_cap(c, X86_FEATURE_K8);
-
- /* MFENCE stops RDTSC speculation */
- set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC);
-
- if (c->x86 == 0x10)
- fam10h_check_enable_mmcfg();
-
- if (amd_apic_timer_broken())
- disable_apic_timer = 1;
-
- if (c == &boot_cpu_data && c->x86 >= 0xf && c->x86 <= 0x11) {
- unsigned long long tseg;
-
- /*
- * Split up direct mapping around the TSEG SMM area.
- * Don't do it for gbpages because there seems very little
- * benefit in doing so.
- */
- if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg) &&
- (tseg >> PMD_SHIFT) < (max_pfn_mapped >> (PMD_SHIFT-PAGE_SHIFT)))
- set_memory_4k((unsigned long)__va(tseg), 1);
- }
-}
-
void __cpuinit detect_ht(struct cpuinfo_x86 *c)
{
#ifdef CONFIG_SMP
@@ -857,135 +639,59 @@ out:
#endif
}
-/*
- * find out the number of processor cores on the die
- */
-static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c)
-{
- unsigned int eax, t;
-
- if (c->cpuid_level < 4)
- return 1;
-
- cpuid_count(4, 0, &eax, &t, &t, &t);
-
- if (eax & 0x1f)
- return ((eax >> 26) + 1);
- else
- return 1;
-}
-
-static void __cpuinit srat_detect_node(void)
-{
-#ifdef CONFIG_NUMA
- unsigned node;
- int cpu = smp_processor_id();
- int apicid = hard_smp_processor_id();
-
- /* Don't do the funky fallback heuristics the AMD version employs
- for now. */
- node = apicid_to_node[apicid];
- if (node == NUMA_NO_NODE || !node_online(node))
- node = first_node(node_online_map);
- numa_set_node(cpu, node);
-
- printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node);
-#endif
-}
-
-static void __cpuinit early_init_intel(struct cpuinfo_x86 *c)
-{
- if ((c->x86 == 0xf && c->x86_model >= 0x03) ||
- (c->x86 == 0x6 && c->x86_model >= 0x0e))
- set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
-}
-
-static void __cpuinit init_intel(struct cpuinfo_x86 *c)
+static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c)
{
- /* Cache sizes */
- unsigned n;
-
- init_intel_cacheinfo(c);
- if (c->cpuid_level > 9) {
- unsigned eax = cpuid_eax(10);
- /* Check for version and the number of counters */
- if ((eax & 0xff) && (((eax>>8) & 0xff) > 1))
- set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON);
+ char *v = c->x86_vendor_id;
+ int i;
+ static int printed;
+
+ for (i = 0; i < X86_VENDOR_NUM; i++) {
+ if (cpu_devs[i]) {
+ if (!strcmp(v, cpu_devs[i]->c_ident[0]) ||
+ (cpu_devs[i]->c_ident[1] &&
+ !strcmp(v, cpu_devs[i]->c_ident[1]))) {
+ c->x86_vendor = i;
+ this_cpu = cpu_devs[i];
+ return;
+ }
+ }
}
-
- if (cpu_has_ds) {
- unsigned int l1, l2;
- rdmsr(MSR_IA32_MISC_ENABLE, l1, l2);
- if (!(l1 & (1<<11)))
- set_cpu_cap(c, X86_FEATURE_BTS);
- if (!(l1 & (1<<12)))
- set_cpu_cap(c, X86_FEATURE_PEBS);
+ if (!printed) {
+ printed++;
+ printk(KERN_ERR "CPU: Vendor unknown, using generic init.\n");
+ printk(KERN_ERR "CPU: Your system may be unstable.\n");
}
-
-
- if (cpu_has_bts)
- ds_init_intel(c);
-
- n = c->extended_cpuid_level;
- if (n >= 0x80000008) {
- unsigned eax = cpuid_eax(0x80000008);
- c->x86_virt_bits = (eax >> 8) & 0xff;
- c->x86_phys_bits = eax & 0xff;
- /* CPUID workaround for Intel 0F34 CPU */
- if (c->x86_vendor == X86_VENDOR_INTEL &&
- c->x86 == 0xF && c->x86_model == 0x3 &&
- c->x86_mask == 0x4)
- c->x86_phys_bits = 36;
- }
-
- if (c->x86 == 15)
- c->x86_cache_alignment = c->x86_clflush_size * 2;
- if (c->x86 == 6)
- set_cpu_cap(c, X86_FEATURE_REP_GOOD);
- set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
- c->x86_max_cores = intel_num_cpu_cores(c);
-
- srat_detect_node();
-}
-
-static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
-{
- if (c->x86 == 0x6 && c->x86_model >= 0xf)
- set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+ c->x86_vendor = X86_VENDOR_UNKNOWN;
}
-static void __cpuinit init_centaur(struct cpuinfo_x86 *c)
+static void __init early_cpu_support_print(void)
{
- /* Cache sizes */
- unsigned n;
+ int i,j;
+ struct cpu_dev *cpu_devx;
- n = c->extended_cpuid_level;
- if (n >= 0x80000008) {
- unsigned eax = cpuid_eax(0x80000008);
- c->x86_virt_bits = (eax >> 8) & 0xff;
- c->x86_phys_bits = eax & 0xff;
- }
-
- if (c->x86 == 0x6 && c->x86_model >= 0xf) {
- c->x86_cache_alignment = c->x86_clflush_size * 2;
- set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
- set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+ printk("KERNEL supported cpus:\n");
+ for (i = 0; i < X86_VENDOR_NUM; i++) {
+ cpu_devx = cpu_devs[i];
+ if (!cpu_devx)
+ continue;
+ for (j = 0; j < 2; j++) {
+ if (!cpu_devx->c_ident[j])
+ continue;
+ printk(" %s %s\n", cpu_devx->c_vendor,
+ cpu_devx->c_ident[j]);
+ }
}
- set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
}
-static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c)
+static void __init early_cpu_init(void)
{
- char *v = c->x86_vendor_id;
+ struct cpu_vendor_dev *cvdev;
- if (!strcmp(v, "AuthenticAMD"))
- c->x86_vendor = X86_VENDOR_AMD;
- else if (!strcmp(v, "GenuineIntel"))
- c->x86_vendor = X86_VENDOR_INTEL;
- else if (!strcmp(v, "CentaurHauls"))
- c->x86_vendor = X86_VENDOR_CENTAUR;
- else
- c->x86_vendor = X86_VENDOR_UNKNOWN;
+ for (cvdev = __x86cpuvendor_start ;
+ cvdev < __x86cpuvendor_end ;
+ cvdev++)
+ cpu_devs[cvdev->vendor] = cvdev->cpu_dev;
+ early_cpu_support_print();
}
/* Do some early cpuid on the boot CPU to get some parameter that are
@@ -1066,17 +772,9 @@ static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c)
if (c->extended_cpuid_level >= 0x80000007)
c->x86_power = cpuid_edx(0x80000007);
- switch (c->x86_vendor) {
- case X86_VENDOR_AMD:
- early_init_amd(c);
- break;
- case X86_VENDOR_INTEL:
- early_init_intel(c);
- break;
- case X86_VENDOR_CENTAUR:
- early_init_centaur(c);
- break;
- }
+ if (c->x86_vendor != X86_VENDOR_UNKNOWN &&
+ cpu_devs[c->x86_vendor]->c_early_init)
+ cpu_devs[c->x86_vendor]->c_early_init(c);
validate_pat_support(c);
}
@@ -1104,24 +802,8 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
* At the end of this section, c->x86_capability better
* indicate the features this CPU genuinely supports!
*/
- switch (c->x86_vendor) {
- case X86_VENDOR_AMD:
- init_amd(c);
- break;
-
- case X86_VENDOR_INTEL:
- init_intel(c);
- break;
-
- case X86_VENDOR_CENTAUR:
- init_centaur(c);
- break;
-
- case X86_VENDOR_UNKNOWN:
- default:
- display_cacheinfo(c);
- break;
- }
+ if (this_cpu->c_init)
+ this_cpu->c_init(c);
detect_ht(c);
diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S
index fad3674..b29f63b 100644
--- a/arch/x86/kernel/vmlinux_64.lds.S
+++ b/arch/x86/kernel/vmlinux_64.lds.S
@@ -177,6 +177,7 @@ SECTIONS
*(.con_initcall.init)
}
__con_initcall_end = .;
+ . = ALIGN(16);
__x86cpuvendor_start = .;
.x86cpuvendor.init : AT(ADDR(.x86cpuvendor.init) - LOAD_OFFSET) {
*(.x86cpuvendor.init)
diff --git a/arch/x86/pci/Makefile_32 b/arch/x86/pci/Makefile_32
index 89ec35d..f647e7e 100644
--- a/arch/x86/pci/Makefile_32
+++ b/arch/x86/pci/Makefile_32
@@ -22,3 +22,4 @@ pci-$(CONFIG_X86_NUMAQ) := numa.o irq.o
pci-$(CONFIG_NUMA) += mp_bus_to_node.o
obj-y += $(pci-y) common.o early.o
+obj-y += amd_bus.o
diff --git a/arch/x86/pci/Makefile_64 b/arch/x86/pci/Makefile_64
index 8fbd198..fd47068 100644
--- a/arch/x86/pci/Makefile_64
+++ b/arch/x86/pci/Makefile_64
@@ -13,5 +13,5 @@ obj-y += legacy.o irq.o common.o early.o
# mmconfig has a 64bit special
obj-$(CONFIG_PCI_MMCONFIG) += mmconfig_64.o direct.o mmconfig-shared.o
-obj-y += k8-bus_64.o
+obj-y += amd_bus.o
diff --git a/arch/x86/pci/k8-bus_64.c b/arch/x86/pci/amd_bus.c
index 5c2799c..15f505d 100644
--- a/arch/x86/pci/k8-bus_64.c
+++ b/arch/x86/pci/amd_bus.c
@@ -1,5 +1,9 @@
#include <linux/init.h>
#include <linux/pci.h>
+#include "pci.h"
+
+#ifdef CONFIG_X86_64
+
#include <asm/pci-direct.h>
#include <asm/mpspec.h>
#include <linux/cpumask.h>
@@ -526,3 +530,31 @@ static int __init early_fill_mp_bus_info(void)
}
postcore_initcall(early_fill_mp_bus_info);
+
+#endif
+
+/* common 32/64 bit code */
+
+#define ENABLE_CF8_EXT_CFG (1ULL << 46)
+
+static void enable_pci_io_ecs_per_cpu(void *unused)
+{
+ u64 reg;
+ rdmsrl(MSR_AMD64_NB_CFG, reg);
+ if (!(reg & ENABLE_CF8_EXT_CFG)) {
+ reg |= ENABLE_CF8_EXT_CFG;
+ wrmsrl(MSR_AMD64_NB_CFG, reg);
+ }
+}
+
+static int __init enable_pci_io_ecs(void)
+{
+ /* assume all cpus from fam10h have IO ECS */
+ if (boot_cpu_data.x86 < 0x10)
+ return 0;
+ on_each_cpu(enable_pci_io_ecs_per_cpu, NULL, 1, 1);
+ pci_probe |= PCI_HAS_IO_ECS;
+ return 0;
+}
+
+postcore_initcall(enable_pci_io_ecs);
diff --git a/arch/x86/pci/direct.c b/arch/x86/pci/direct.c
index 21d1e0e..9915293 100644
--- a/arch/x86/pci/direct.c
+++ b/arch/x86/pci/direct.c
@@ -8,18 +8,21 @@
#include "pci.h"
/*
- * Functions for accessing PCI configuration space with type 1 accesses
+ * Functions for accessing PCI base (first 256 bytes) and extended
+ * (4096 bytes per PCI function) configuration space with type 1
+ * accesses.
*/
#define PCI_CONF1_ADDRESS(bus, devfn, reg) \
- (0x80000000 | (bus << 16) | (devfn << 8) | (reg & ~3))
+ (0x80000000 | ((reg & 0xF00) << 16) | (bus << 16) \
+ | (devfn << 8) | (reg & 0xFC))
static int pci_conf1_read(unsigned int seg, unsigned int bus,
unsigned int devfn, int reg, int len, u32 *value)
{
unsigned long flags;
- if ((bus > 255) || (devfn > 255) || (reg > 255)) {
+ if ((bus > 255) || (devfn > 255) || (reg > 4095)) {
*value = -1;
return -EINVAL;
}
@@ -50,7 +53,7 @@ static int pci_conf1_write(unsigned int seg, unsigned int bus,
{
unsigned long flags;
- if ((bus > 255) || (devfn > 255) || (reg > 255))
+ if ((bus > 255) || (devfn > 255) || (reg > 4095))
return -EINVAL;
spin_lock_irqsave(&pci_config_lock, flags);
@@ -260,10 +263,18 @@ void __init pci_direct_init(int type)
return;
printk(KERN_INFO "PCI: Using configuration type %d for base access\n",
type);
- if (type == 1)
+ if (type == 1) {
raw_pci_ops = &pci_direct_conf1;
- else
- raw_pci_ops = &pci_direct_conf2;
+ if (raw_pci_ext_ops)
+ return;
+ if (!(pci_probe & PCI_HAS_IO_ECS))
+ return;
+ printk(KERN_INFO "PCI: Using configuration type 1 "
+ "for extended access\n");
+ raw_pci_ext_ops = &pci_direct_conf1;
+ return;
+ }
+ raw_pci_ops = &pci_direct_conf2;
}
int __init pci_direct_probe(void)
diff --git a/arch/x86/pci/pci.h b/arch/x86/pci/pci.h
index 720c4c5..ba263e6 100644
--- a/arch/x86/pci/pci.h
+++ b/arch/x86/pci/pci.h
@@ -27,6 +27,7 @@
#define PCI_CAN_SKIP_ISA_ALIGN 0x8000
#define PCI_USE__CRS 0x10000
#define PCI_CHECK_ENABLE_AMD_MMCONF 0x20000
+#define PCI_HAS_IO_ECS 0x40000
extern unsigned int pci_probe;
extern unsigned long pirq_table_addr;
generated by cgit v1.1 at 2024-07-06 07:14:00 +0000