Merge branch 'merge-fixes' into devel

1 files changed, 99 insertions, 81 deletions

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index a38aafaefc23..d999d7833bc2 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -62,9 +62,9 @@ __u32 cleared_cpu_caps[NCAPINTS] __cpuinitdata;
 static int cachesize_override __cpuinitdata = -1;
 static int disable_x86_serial_nr __cpuinitdata = 1;
 
-struct cpu_dev * cpu_devs[X86_VENDOR_NUM] = {};
+struct cpu_dev *cpu_devs[X86_VENDOR_NUM] = {};
 
-static void __cpuinit default_init(struct cpuinfo_x86 * c)
+static void __cpuinit default_init(struct cpuinfo_x86 *c)
 {
         /* Not much we can do here... */
         /* Check if at least it has cpuid */
@@ -81,11 +81,11 @@ static struct cpu_dev __cpuinitdata default_cpu = {
         .c_init = default_init,
         .c_vendor = "Unknown",
 };
-static struct cpu_dev * this_cpu __cpuinitdata = &default_cpu;
+static struct cpu_dev *this_cpu __cpuinitdata = &default_cpu;
 
 static int __init cachesize_setup(char *str)
 {
-        get_option (&str, &cachesize_override);
+        get_option(&str, &cachesize_override);
         return 1;
 }
 __setup("cachesize=", cachesize_setup);
@@ -107,12 +107,12 @@ int __cpuinit get_model_name(struct cpuinfo_x86 *c)
         /* Intel chips right-justify this string for some dumb reason;
            undo that brain damage */
         p = q = &c->x86_model_id[0];
-        while ( *p == ' ' )
+        while (*p == ' ')
              p++;
-        if ( p != q ) {
-             while ( *p )
+        if (p != q) {
+             while (*p)
                   *q++ = *p++;
-             while ( q <= &c->x86_model_id[48] )
+             while (q <= &c->x86_model_id[48])
                   *q++ = '\0';  /* Zero-pad the rest */
         }
 
@@ -130,7 +130,7 @@ void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c)
                 cpuid(0x80000005, &dummy, &dummy, &ecx, &edx);
                 printk(KERN_INFO "CPU: L1 I Cache: %dK (%d bytes/line), D cache %dK (%d bytes/line)\n",
                         edx>>24, edx&0xFF, ecx>>24, ecx&0xFF);
-                c->x86_cache_size=(ecx>>24)+(edx>>24);  
+                c->x86_cache_size = (ecx>>24)+(edx>>24);
         }
 
         if (n < 0x80000006)     /* Some chips just has a large L1. */
@@ -138,16 +138,16 @@ void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c)
 
         ecx = cpuid_ecx(0x80000006);
         l2size = ecx >> 16;
-        
+
         /* do processor-specific cache resizing */
         if (this_cpu->c_size_cache)
-                l2size = this_cpu->c_size_cache(c,l2size);
+                l2size = this_cpu->c_size_cache(c, l2size);
 
         /* Allow user to override all this if necessary. */
         if (cachesize_override != -1)
                 l2size = cachesize_override;
 
-        if ( l2size == 0 )
+        if (l2size == 0)
                 return;         /* Again, no L2 cache is possible */
 
         c->x86_cache_size = l2size;
@@ -156,16 +156,19 @@ void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c)
                l2size, ecx & 0xFF);
 }
 
-/* Naming convention should be: <Name> [(<Codename>)] */
-/* This table only is used unless init_<vendor>() below doesn't set it; */
-/* in particular, if CPUID levels 0x80000002..4 are supported, this isn't used */
+/*
+ * Naming convention should be: <Name> [(<Codename>)]
+ * This table only is used unless init_<vendor>() below doesn't set it;
+ * in particular, if CPUID levels 0x80000002..4 are supported, this isn't used
+ *
+ */
 
 /* Look up CPU names by table lookup. */
 static char __cpuinit *table_lookup_model(struct cpuinfo_x86 *c)
 {
         struct cpu_model_info *info;
 
-        if ( c->x86_model >= 16 )
+        if (c->x86_model >= 16)
                 return NULL;    /* Range check */
 
         if (!this_cpu)
@@ -190,9 +193,9 @@ static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c, int early)
 
         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]))) {
+                        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;
                                 if (!early)
                                         this_cpu = cpu_devs[i];
@@ -210,7 +213,7 @@ static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c, int early)
 }
 
 
-static int __init x86_fxsr_setup(char * s)
+static int __init x86_fxsr_setup(char *s)
 {
         setup_clear_cpu_cap(X86_FEATURE_FXSR);
         setup_clear_cpu_cap(X86_FEATURE_XMM);
@@ -219,7 +222,7 @@ static int __init x86_fxsr_setup(char * s)
 __setup("nofxsr", x86_fxsr_setup);
 
 
-static int __init x86_sep_setup(char * s)
+static int __init x86_sep_setup(char *s)
 {
         setup_clear_cpu_cap(X86_FEATURE_SEP);
         return 1;
@@ -306,14 +309,30 @@ static void __cpuinit early_get_cap(struct cpuinfo_x86 *c)
 
         }
 
-}
+        clear_cpu_cap(c, X86_FEATURE_PAT);
+
+        switch (c->x86_vendor) {
+        case X86_VENDOR_AMD:
+                if (c->x86 >= 0xf && c->x86 <= 0x11)
+                        set_cpu_cap(c, X86_FEATURE_PAT);
+                break;
+        case X86_VENDOR_INTEL:
+                if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15))
+                        set_cpu_cap(c, X86_FEATURE_PAT);
+                break;
+        }
 
-/* Do minimum CPU detection early.
-   Fields really needed: vendor, cpuid_level, family, model, mask, cache alignment.
-   The others are not touched to avoid unwanted side effects.
+}
 
-   WARNING: this function is only called on the BP.  Don't add code here
-   that is supposed to run on all CPUs. */
+/*
+ * Do minimum CPU detection early.
+ * Fields really needed: vendor, cpuid_level, family, model, mask,
+ * cache alignment.
+ * The others are not touched to avoid unwanted side effects.
+ *
+ * WARNING: this function is only called on the BP.  Don't add code here
+ * that is supposed to run on all CPUs.
+ */
 static void __init early_cpu_detect(void)
 {
         struct cpuinfo_x86 *c = &boot_cpu_data;
@@ -328,19 +347,14 @@ static void __init early_cpu_detect(void)
 
         get_cpu_vendor(c, 1);
 
-        switch (c->x86_vendor) {
-        case X86_VENDOR_AMD:
-                early_init_amd(c);
-                break;
-        case X86_VENDOR_INTEL:
-                early_init_intel(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);
 
         early_get_cap(c);
 }
 
-static void __cpuinit generic_identify(struct cpuinfo_x86 * c)
+static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
 {
         u32 tfms, xlvl;
         unsigned int ebx;
@@ -351,13 +365,12 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 * c)
                       (unsigned int *)&c->x86_vendor_id[0],
                       (unsigned int *)&c->x86_vendor_id[8],
                       (unsigned int *)&c->x86_vendor_id[4]);
-                
+
                 get_cpu_vendor(c, 0);
                 /* Initialize the standard set of capabilities */
                 /* Note that the vendor-specific code below might override */
-        
                 /* Intel-defined flags: level 0x00000001 */
-                if ( c->cpuid_level >= 0x00000001 ) {
+                if (c->cpuid_level >= 0x00000001) {
                         u32 capability, excap;
                         cpuid(0x00000001, &tfms, &ebx, &excap, &capability);
                         c->x86_capability[0] = capability;
@@ -369,12 +382,14 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 * c)
                         if (c->x86 >= 0x6)
                                 c->x86_model += ((tfms >> 16) & 0xF) << 4;
                         c->x86_mask = tfms & 15;
+                        c->initial_apicid = (ebx >> 24) & 0xFF;
 #ifdef CONFIG_X86_HT
-                        c->apicid = phys_pkg_id((ebx >> 24) & 0xFF, 0);
+                        c->apicid = phys_pkg_id(c->initial_apicid, 0);
+                        c->phys_proc_id = c->initial_apicid;
 #else
-                        c->apicid = (ebx >> 24) & 0xFF;
+                        c->apicid = c->initial_apicid;
 #endif
-                        if (c->x86_capability[0] & (1<<19))
+                        if (test_cpu_cap(c, X86_FEATURE_CLFLSH))
                                 c->x86_clflush_size = ((ebx >> 8) & 0xff) * 8;
                 } else {
                         /* Have CPUID level 0 only - unheard of */
@@ -383,33 +398,42 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 * c)
 
                 /* AMD-defined flags: level 0x80000001 */
                 xlvl = cpuid_eax(0x80000000);
-                if ( (xlvl & 0xffff0000) == 0x80000000 ) {
-                        if ( xlvl >= 0x80000001 ) {
+                if ((xlvl & 0xffff0000) == 0x80000000) {
+                        if (xlvl >= 0x80000001) {
                                 c->x86_capability[1] = cpuid_edx(0x80000001);
                                 c->x86_capability[6] = cpuid_ecx(0x80000001);
                         }
-                        if ( xlvl >= 0x80000004 )
+                        if (xlvl >= 0x80000004)
                                 get_model_name(c); /* Default name */
                 }
 
                 init_scattered_cpuid_features(c);
         }
 
-#ifdef CONFIG_X86_HT
-        c->phys_proc_id = (cpuid_ebx(1) >> 24) & 0xff;
-#endif
+        clear_cpu_cap(c, X86_FEATURE_PAT);
+
+        switch (c->x86_vendor) {
+        case X86_VENDOR_AMD:
+                if (c->x86 >= 0xf && c->x86 <= 0x11)
+                        set_cpu_cap(c, X86_FEATURE_PAT);
+                break;
+        case X86_VENDOR_INTEL:
+                if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15))
+                        set_cpu_cap(c, X86_FEATURE_PAT);
+                break;
+        }
 }
 
 static void __cpuinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c)
 {
-        if (cpu_has(c, X86_FEATURE_PN) && disable_x86_serial_nr ) {
+        if (cpu_has(c, X86_FEATURE_PN) && disable_x86_serial_nr) {
                 /* Disable processor serial number */
-                unsigned long lo,hi;
-                rdmsr(MSR_IA32_BBL_CR_CTL,lo,hi);
+                unsigned long lo, hi;
+                rdmsr(MSR_IA32_BBL_CR_CTL, lo, hi);
                 lo |= 0x200000;
-                wrmsr(MSR_IA32_BBL_CR_CTL,lo,hi);
+                wrmsr(MSR_IA32_BBL_CR_CTL, lo, hi);
                 printk(KERN_NOTICE "CPU serial number disabled.\n");
-                clear_bit(X86_FEATURE_PN, c->x86_capability);
+                clear_cpu_cap(c, X86_FEATURE_PN);
 
                 /* Disabling the serial number may affect the cpuid level */
                 c->cpuid_level = cpuid_eax(0);
@@ -444,9 +468,11 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
         memset(&c->x86_capability, 0, sizeof c->x86_capability);
 
         if (!have_cpuid_p()) {
-                /* First of all, decide if this is a 486 or higher */
-                /* It's a 486 if we can modify the AC flag */
-                if ( flag_is_changeable_p(X86_EFLAGS_AC) )
+                /*
+                 * First of all, decide if this is a 486 or higher
+                 * It's a 486 if we can modify the AC flag
+                 */
+                if (flag_is_changeable_p(X86_EFLAGS_AC))
                         c->x86 = 4;
                 else
                         c->x86 = 3;
@@ -479,10 +505,10 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
          */
 
         /* If the model name is still unset, do table lookup. */
-        if ( !c->x86_model_id[0] ) {
+        if (!c->x86_model_id[0]) {
                 char *p;
                 p = table_lookup_model(c);
-                if ( p )
+                if (p)
                         strcpy(c->x86_model_id, p);
                 else
                         /* Last resort... */
@@ -496,9 +522,9 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
          * common between the CPUs.  The first time this routine gets
          * executed, c == &boot_cpu_data.
          */
-        if ( c != &boot_cpu_data ) {
+        if (c != &boot_cpu_data) {
                 /* AND the already accumulated flags with these */
-                for ( i = 0 ; i < NCAPINTS ; i++ )
+                for (i = 0 ; i < NCAPINTS ; i++)
                         boot_cpu_data.x86_capability[i] &= c->x86_capability[i];
         }
 
@@ -542,7 +568,7 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 
         if (smp_num_siblings == 1) {
                 printk(KERN_INFO  "CPU: Hyper-Threading is disabled\n");
-        } else if (smp_num_siblings > 1 ) {
+        } else if (smp_num_siblings > 1) {
 
                 if (smp_num_siblings > NR_CPUS) {
                         printk(KERN_WARNING "CPU: Unsupported number of the "
@@ -552,7 +578,7 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
                 }
 
                 index_msb = get_count_order(smp_num_siblings);
-                c->phys_proc_id = phys_pkg_id((ebx >> 24) & 0xFF, index_msb);
+                c->phys_proc_id = phys_pkg_id(c->initial_apicid, index_msb);
 
                 printk(KERN_INFO  "CPU: Physical Processor ID: %d\n",
                        c->phys_proc_id);
@@ -563,7 +589,7 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 
                 core_bits = get_count_order(c->x86_max_cores);
 
-                c->cpu_core_id = phys_pkg_id((ebx >> 24) & 0xFF, index_msb) &
+                c->cpu_core_id = phys_pkg_id(c->initial_apicid, index_msb) &
                                                ((1 << core_bits) - 1);
 
                 if (c->x86_max_cores > 1)
@@ -597,7 +623,7 @@ void __cpuinit print_cpu_info(struct cpuinfo_x86 *c)
         else
                 printk("%s", c->x86_model_id);
 
-        if (c->x86_mask || c->cpuid_level >= 0) 
+        if (c->x86_mask || c->cpuid_level >= 0)
                 printk(" stepping %02x\n", c->x86_mask);
         else
                 printk("\n");
@@ -616,23 +642,15 @@ __setup("clearcpuid=", setup_disablecpuid);
 
 cpumask_t cpu_initialized __cpuinitdata = CPU_MASK_NONE;
 
-/* This is hacky. :)
- * We're emulating future behavior.
- * In the future, the cpu-specific init functions will be called implicitly
- * via the magic of initcalls.
- * They will insert themselves into the cpu_devs structure.
- * Then, when cpu_init() is called, we can just iterate over that array.
- */
 void __init early_cpu_init(void)
 {
-        intel_cpu_init();
-        cyrix_init_cpu();
-        nsc_init_cpu();
-        amd_init_cpu();
-        centaur_init_cpu();
-        transmeta_init_cpu();
-        nexgen_init_cpu();
-        umc_init_cpu();
+        struct cpu_vendor_dev *cvdev;
+
+        for (cvdev = __x86cpuvendor_start ;
+             cvdev < __x86cpuvendor_end   ;
+             cvdev++)
+                cpu_devs[cvdev->vendor] = cvdev->cpu_dev;
+
         early_cpu_detect();
 }
 
@@ -666,7 +684,7 @@ void __cpuinit cpu_init(void)
 {
         int cpu = smp_processor_id();
         struct task_struct *curr = current;
-        struct tss_struct * t = &per_cpu(init_tss, cpu);
+        struct tss_struct *t = &per_cpu(init_tss, cpu);
         struct thread_struct *thread = &curr->thread;
 
         if (cpu_test_and_set(cpu, cpu_initialized)) {
@@ -692,7 +710,7 @@ void __cpuinit cpu_init(void)
         enter_lazy_tlb(&init_mm, curr);
 
         load_sp0(t, thread);
-        set_tss_desc(cpu,t);
+        set_tss_desc(cpu, t);
         load_TR_desc();
         load_LDT(&init_mm.context);