include/asm-x86/cpufeature.h

   1 /*
   2  * Defines x86 CPU feature bits
   3  */
   4 #ifndef _ASM_X86_CPUFEATURE_H
   5 #define _ASM_X86_CPUFEATURE_H
   6
   7 #include <asm/required-features.h>
   8
   9 #define NCAPINTS        8       /* N 32-bit words worth of info */
  10
  11 /* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */
  12 #define X86_FEATURE_FPU         (0*32+ 0) /* Onboard FPU */
  13 #define X86_FEATURE_VME         (0*32+ 1) /* Virtual Mode Extensions */
  14 #define X86_FEATURE_DE          (0*32+ 2) /* Debugging Extensions */
  15 #define X86_FEATURE_PSE         (0*32+ 3) /* Page Size Extensions */
  16 #define X86_FEATURE_TSC         (0*32+ 4) /* Time Stamp Counter */
  17 #define X86_FEATURE_MSR         (0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */
  18 #define X86_FEATURE_PAE         (0*32+ 6) /* Physical Address Extensions */
  19 #define X86_FEATURE_MCE         (0*32+ 7) /* Machine Check Architecture */
  20 #define X86_FEATURE_CX8         (0*32+ 8) /* CMPXCHG8 instruction */
  21 #define X86_FEATURE_APIC        (0*32+ 9) /* Onboard APIC */
  22 #define X86_FEATURE_SEP         (0*32+11) /* SYSENTER/SYSEXIT */
  23 #define X86_FEATURE_MTRR        (0*32+12) /* Memory Type Range Registers */
  24 #define X86_FEATURE_PGE         (0*32+13) /* Page Global Enable */
  25 #define X86_FEATURE_MCA         (0*32+14) /* Machine Check Architecture */
  26 #define X86_FEATURE_CMOV        (0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */
  27 #define X86_FEATURE_PAT         (0*32+16) /* Page Attribute Table */
  28 #define X86_FEATURE_PSE36       (0*32+17) /* 36-bit PSEs */
  29 #define X86_FEATURE_PN          (0*32+18) /* Processor serial number */
  30 #define X86_FEATURE_CLFLSH      (0*32+19) /* Supports the CLFLUSH instruction */
  31 #define X86_FEATURE_DS          (0*32+21) /* Debug Store */
  32 #define X86_FEATURE_ACPI        (0*32+22) /* ACPI via MSR */
  33 #define X86_FEATURE_MMX         (0*32+23) /* Multimedia Extensions */
  34 #define X86_FEATURE_FXSR        (0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
  35                                           /* of FPU context), and CR4.OSFXSR available */
  36 #define X86_FEATURE_XMM         (0*32+25) /* Streaming SIMD Extensions */
  37 #define X86_FEATURE_XMM2        (0*32+26) /* Streaming SIMD Extensions-2 */
  38 #define X86_FEATURE_SELFSNOOP   (0*32+27) /* CPU self snoop */
  39 #define X86_FEATURE_HT          (0*32+28) /* Hyper-Threading */
  40 #define X86_FEATURE_ACC         (0*32+29) /* Automatic clock control */
  41 #define X86_FEATURE_IA64        (0*32+30) /* IA-64 processor */
  42
  43 /* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
  44 /* Don't duplicate feature flags which are redundant with Intel! */
  45 #define X86_FEATURE_SYSCALL     (1*32+11) /* SYSCALL/SYSRET */
  46 #define X86_FEATURE_MP          (1*32+19) /* MP Capable. */
  47 #define X86_FEATURE_NX          (1*32+20) /* Execute Disable */
  48 #define X86_FEATURE_MMXEXT      (1*32+22) /* AMD MMX extensions */
  49 #define X86_FEATURE_GBPAGES     (1*32+26) /* GB pages */
  50 #define X86_FEATURE_RDTSCP      (1*32+27) /* RDTSCP */
  51 #define X86_FEATURE_LM          (1*32+29) /* Long Mode (x86-64) */
  52 #define X86_FEATURE_3DNOWEXT    (1*32+30) /* AMD 3DNow! extensions */
  53 #define X86_FEATURE_3DNOW       (1*32+31) /* 3DNow! */
  54
  55 /* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
  56 #define X86_FEATURE_RECOVERY    (2*32+ 0) /* CPU in recovery mode */
  57 #define X86_FEATURE_LONGRUN     (2*32+ 1) /* Longrun power control */
  58 #define X86_FEATURE_LRTI        (2*32+ 3) /* LongRun table interface */
  59
  60 /* Other features, Linux-defined mapping, word 3 */
  61 /* This range is used for feature bits which conflict or are synthesized */
  62 #define X86_FEATURE_CXMMX       (3*32+ 0) /* Cyrix MMX extensions */
  63 #define X86_FEATURE_K6_MTRR     (3*32+ 1) /* AMD K6 nonstandard MTRRs */
  64 #define X86_FEATURE_CYRIX_ARR   (3*32+ 2) /* Cyrix ARRs (= MTRRs) */
  65 #define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */
  66 /* cpu types for specific tunings: */
  67 #define X86_FEATURE_K8          (3*32+ 4) /* Opteron, Athlon64 */
  68 #define X86_FEATURE_K7          (3*32+ 5) /* Athlon */
  69 #define X86_FEATURE_P3          (3*32+ 6) /* P3 */
  70 #define X86_FEATURE_P4          (3*32+ 7) /* P4 */
  71 #define X86_FEATURE_CONSTANT_TSC (3*32+ 8) /* TSC ticks at a constant rate */
  72 #define X86_FEATURE_UP          (3*32+ 9) /* smp kernel running on up */
  73 #define X86_FEATURE_FXSAVE_LEAK (3*32+10) /* FXSAVE leaks FOP/FIP/FOP */
  74 #define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */
  75 #define X86_FEATURE_PEBS        (3*32+12)  /* Precise-Event Based Sampling */
  76 #define X86_FEATURE_BTS         (3*32+13)  /* Branch Trace Store */
  77 /* 14 free */
  78 /* 15 free */
  79 #define X86_FEATURE_REP_GOOD    (3*32+16) /* rep microcode works well on this CPU */
  80 #define X86_FEATURE_MFENCE_RDTSC (3*32+17) /* Mfence synchronizes RDTSC */
  81 #define X86_FEATURE_LFENCE_RDTSC (3*32+18) /* Lfence synchronizes RDTSC */
  82
  83 /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
  84 #define X86_FEATURE_XMM3        (4*32+ 0) /* Streaming SIMD Extensions-3 */
  85 #define X86_FEATURE_MWAIT       (4*32+ 3) /* Monitor/Mwait support */
  86 #define X86_FEATURE_DSCPL       (4*32+ 4) /* CPL Qualified Debug Store */
  87 #define X86_FEATURE_EST         (4*32+ 7) /* Enhanced SpeedStep */
  88 #define X86_FEATURE_TM2         (4*32+ 8) /* Thermal Monitor 2 */
  89 #define X86_FEATURE_CID         (4*32+10) /* Context ID */
  90 #define X86_FEATURE_CX16        (4*32+13) /* CMPXCHG16B */
  91 #define X86_FEATURE_XTPR        (4*32+14) /* Send Task Priority Messages */
  92 #define X86_FEATURE_DCA         (4*32+18) /* Direct Cache Access */
  93
  94 /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
  95 #define X86_FEATURE_XSTORE      (5*32+ 2) /* on-CPU RNG present (xstore insn) */
  96 #define X86_FEATURE_XSTORE_EN   (5*32+ 3) /* on-CPU RNG enabled */
  97 #define X86_FEATURE_XCRYPT      (5*32+ 6) /* on-CPU crypto (xcrypt insn) */
  98 #define X86_FEATURE_XCRYPT_EN   (5*32+ 7) /* on-CPU crypto enabled */
  99 #define X86_FEATURE_ACE2        (5*32+ 8) /* Advanced Cryptography Engine v2 */
 100 #define X86_FEATURE_ACE2_EN     (5*32+ 9) /* ACE v2 enabled */
 101 #define X86_FEATURE_PHE         (5*32+ 10) /* PadLock Hash Engine */
 102 #define X86_FEATURE_PHE_EN      (5*32+ 11) /* PHE enabled */
 103 #define X86_FEATURE_PMM         (5*32+ 12) /* PadLock Montgomery Multiplier */
 104 #define X86_FEATURE_PMM_EN      (5*32+ 13) /* PMM enabled */
 105
 106 /* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
 107 #define X86_FEATURE_LAHF_LM     (6*32+ 0) /* LAHF/SAHF in long mode */
 108 #define X86_FEATURE_CMP_LEGACY  (6*32+ 1) /* If yes HyperThreading not valid */
 109
 110 /*
 111  * Auxiliary flags: Linux defined - For features scattered in various
 112  * CPUID levels like 0x6, 0xA etc
 113  */
 114 #define X86_FEATURE_IDA         (7*32+ 0) /* Intel Dynamic Acceleration */
 115
 116 #if defined(__KERNEL__) && !defined(__ASSEMBLY__)
 117
 118 #include <linux/bitops.h>
 119
 120 extern const char * const x86_cap_flags[NCAPINTS*32];
 121 extern const char * const x86_power_flags[32];
 122
 123 #define cpu_has(c, bit)                                                 \
 124         (__builtin_constant_p(bit) &&                                   \
 125          ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) ||     \
 126            (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) ||     \
 127            (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) ||     \
 128            (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) ||     \
 129            (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) ||     \
 130            (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) ||     \
 131            (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) ||     \
 132            (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) )      \
 133           ? 1 :                                                         \
 134          test_bit(bit, (unsigned long *)((c)->x86_capability)))
 135 #define boot_cpu_has(bit)       cpu_has(&boot_cpu_data, bit)
 136
 137 #define set_cpu_cap(c, bit)     set_bit(bit, (unsigned long *)((c)->x86_capability))
 138 #define clear_cpu_cap(c, bit)   clear_bit(bit, (unsigned long *)((c)->x86_capability))
 139 #define setup_clear_cpu_cap(bit) do { \
 140         clear_cpu_cap(&boot_cpu_data, bit);     \
 141         set_bit(bit, cleared_cpu_caps);         \
 142 } while (0)
 143 #define setup_force_cpu_cap(bit) do { \
 144         set_cpu_cap(&boot_cpu_data, bit);       \
 145         clear_bit(bit, cleared_cpu_caps);       \
 146 } while (0)
 147
 148 #define cpu_has_fpu             boot_cpu_has(X86_FEATURE_FPU)
 149 #define cpu_has_vme             boot_cpu_has(X86_FEATURE_VME)
 150 #define cpu_has_de              boot_cpu_has(X86_FEATURE_DE)
 151 #define cpu_has_pse             boot_cpu_has(X86_FEATURE_PSE)
 152 #define cpu_has_tsc             boot_cpu_has(X86_FEATURE_TSC)
 153 #define cpu_has_pae             boot_cpu_has(X86_FEATURE_PAE)
 154 #define cpu_has_pge             boot_cpu_has(X86_FEATURE_PGE)
 155 #define cpu_has_apic            boot_cpu_has(X86_FEATURE_APIC)
 156 #define cpu_has_sep             boot_cpu_has(X86_FEATURE_SEP)
 157 #define cpu_has_mtrr            boot_cpu_has(X86_FEATURE_MTRR)
 158 #define cpu_has_mmx             boot_cpu_has(X86_FEATURE_MMX)
 159 #define cpu_has_fxsr            boot_cpu_has(X86_FEATURE_FXSR)
 160 #define cpu_has_xmm             boot_cpu_has(X86_FEATURE_XMM)
 161 #define cpu_has_xmm2            boot_cpu_has(X86_FEATURE_XMM2)
 162 #define cpu_has_xmm3            boot_cpu_has(X86_FEATURE_XMM3)
 163 #define cpu_has_ht              boot_cpu_has(X86_FEATURE_HT)
 164 #define cpu_has_mp              boot_cpu_has(X86_FEATURE_MP)
 165 #define cpu_has_nx              boot_cpu_has(X86_FEATURE_NX)
 166 #define cpu_has_k6_mtrr         boot_cpu_has(X86_FEATURE_K6_MTRR)
 167 #define cpu_has_cyrix_arr       boot_cpu_has(X86_FEATURE_CYRIX_ARR)
 168 #define cpu_has_centaur_mcr     boot_cpu_has(X86_FEATURE_CENTAUR_MCR)
 169 #define cpu_has_xstore          boot_cpu_has(X86_FEATURE_XSTORE)
 170 #define cpu_has_xstore_enabled  boot_cpu_has(X86_FEATURE_XSTORE_EN)
 171 #define cpu_has_xcrypt          boot_cpu_has(X86_FEATURE_XCRYPT)
 172 #define cpu_has_xcrypt_enabled  boot_cpu_has(X86_FEATURE_XCRYPT_EN)
 173 #define cpu_has_ace2            boot_cpu_has(X86_FEATURE_ACE2)
 174 #define cpu_has_ace2_enabled    boot_cpu_has(X86_FEATURE_ACE2_EN)
 175 #define cpu_has_phe             boot_cpu_has(X86_FEATURE_PHE)
 176 #define cpu_has_phe_enabled     boot_cpu_has(X86_FEATURE_PHE_EN)
 177 #define cpu_has_pmm             boot_cpu_has(X86_FEATURE_PMM)
 178 #define cpu_has_pmm_enabled     boot_cpu_has(X86_FEATURE_PMM_EN)
 179 #define cpu_has_ds              boot_cpu_has(X86_FEATURE_DS)
 180 #define cpu_has_pebs            boot_cpu_has(X86_FEATURE_PEBS)
 181 #define cpu_has_clflush         boot_cpu_has(X86_FEATURE_CLFLSH)
 182 #define cpu_has_bts             boot_cpu_has(X86_FEATURE_BTS)
 183 #define cpu_has_gbpages         boot_cpu_has(X86_FEATURE_GBPAGES)
 184
 185 #if defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_64)
 186 # define cpu_has_invlpg         1
 187 #else
 188 # define cpu_has_invlpg         (boot_cpu_data.x86 > 3)
 189 #endif
 190
 191 #ifdef CONFIG_X86_64
 192
 193 #undef  cpu_has_vme
 194 #define cpu_has_vme             0
 195
 196 #undef  cpu_has_pae
 197 #define cpu_has_pae             ___BUG___
 198
 199 #undef  cpu_has_mp
 200 #define cpu_has_mp              1
 201
 202 #undef  cpu_has_k6_mtrr
 203 #define cpu_has_k6_mtrr         0
 204
 205 #undef  cpu_has_cyrix_arr
 206 #define cpu_has_cyrix_arr       0
 207
 208 #undef  cpu_has_centaur_mcr
 209 #define cpu_has_centaur_mcr     0
 210
 211 #endif /* CONFIG_X86_64 */
 212
 213 #endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
 214
 215 #endif /* _ASM_X86_CPUFEATURE_H */