include/asm-i386/cpufeature.h

   1 /*
   2  * cpufeature.h
   3  *
   4  * Defines x86 CPU feature bits
   5  */
   6
   7 #ifndef __ASM_I386_CPUFEATURE_H
   8 #define __ASM_I386_CPUFEATURE_H
   9
  10 /* Sample usage: CPU_FEATURE_P(cpu.x86_capability, FPU) */
  11 #define CPU_FEATURE_P(CAP, FEATURE) test_bit(CAP, X86_FEATURE_##FEATURE ##_BIT)
  12
  13 #define NCAPINTS        4       /* Currently we have 4 32-bit words worth of info */
  14
  15 /* Intel-defined CPU features, CPUID level 0x00000001, word 0 */
  16 #define X86_FEATURE_FPU         (0*32+ 0) /* Onboard FPU */
  17 #define X86_FEATURE_VME         (0*32+ 1) /* Virtual Mode Extensions */
  18 #define X86_FEATURE_DE          (0*32+ 2) /* Debugging Extensions */
  19 #define X86_FEATURE_PSE         (0*32+ 3) /* Page Size Extensions */
  20 #define X86_FEATURE_TSC         (0*32+ 4) /* Time Stamp Counter */
  21 #define X86_FEATURE_MSR         (0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */
  22 #define X86_FEATURE_PAE         (0*32+ 6) /* Physical Address Extensions */
  23 #define X86_FEATURE_MCE         (0*32+ 7) /* Machine Check Architecture */
  24 #define X86_FEATURE_CX8         (0*32+ 8) /* CMPXCHG8 instruction */
  25 #define X86_FEATURE_APIC        (0*32+ 9) /* Onboard APIC */
  26 #define X86_FEATURE_SEP         (0*32+11) /* SYSENTER/SYSEXIT */
  27 #define X86_FEATURE_MTRR        (0*32+12) /* Memory Type Range Registers */
  28 #define X86_FEATURE_PGE         (0*32+13) /* Page Global Enable */
  29 #define X86_FEATURE_MCA         (0*32+14) /* Machine Check Architecture */
  30 #define X86_FEATURE_CMOV        (0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */
  31 #define X86_FEATURE_PAT         (0*32+16) /* Page Attribute Table */
  32 #define X86_FEATURE_PSE36       (0*32+17) /* 36-bit PSEs */
  33 #define X86_FEATURE_PN          (0*32+18) /* Processor serial number */
  34 #define X86_FEATURE_CLFLSH      (0*32+19) /* Supports the CLFLUSH instruction */
  35 #define X86_FEATURE_DTES        (0*32+21) /* Debug Trace Store */
  36 #define X86_FEATURE_ACPI        (0*32+22) /* ACPI via MSR */
  37 #define X86_FEATURE_MMX         (0*32+23) /* Multimedia Extensions */
  38 #define X86_FEATURE_FXSR        (0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
  39                                           /* of FPU context), and CR4.OSFXSR available */
  40 #define X86_FEATURE_XMM         (0*32+25) /* Streaming SIMD Extensions */
  41 #define X86_FEATURE_XMM2        (0*32+26) /* Streaming SIMD Extensions-2 */
  42 #define X86_FEATURE_SELFSNOOP   (0*32+27) /* CPU self snoop */
  43 #define X86_FEATURE_ACC         (0*32+29) /* Automatic clock control */
  44 #define X86_FEATURE_IA64        (0*32+30) /* IA-64 processor */
  45
  46 /* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
  47 /* Don't duplicate feature flags which are redundant with Intel! */
  48 #define X86_FEATURE_SYSCALL     (1*32+11) /* SYSCALL/SYSRET */
  49 #define X86_FEATURE_MMXEXT      (1*32+22) /* AMD MMX extensions */
  50 #define X86_FEATURE_LM          (1*32+29) /* Long Mode (x86-64) */
  51 #define X86_FEATURE_3DNOWEXT    (1*32+30) /* AMD 3DNow! extensions */
  52 #define X86_FEATURE_3DNOW       (1*32+31) /* 3DNow! */
  53
  54 /* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
  55 #define X86_FEATURE_RECOVERY    (2*32+ 0) /* CPU in recovery mode */
  56 #define X86_FEATURE_LONGRUN     (2*32+ 1) /* Longrun power control */
  57 #define X86_FEATURE_LRTI        (2*32+ 3) /* LongRun table interface */
  58
  59 /* Other features, Linux-defined mapping, word 3 */
  60 /* This range is used for feature bits which conflict or are synthesized */
  61 #define X86_FEATURE_CXMMX       (3*32+ 0) /* Cyrix MMX extensions */
  62 #define X86_FEATURE_K6_MTRR     (3*32+ 1) /* AMD K6 nonstandard MTRRs */
  63 #define X86_FEATURE_CYRIX_ARR   (3*32+ 2) /* Cyrix ARRs (= MTRRs) */
  64 #define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */
  65
  66 #endif /* __ASM_I386_CPUFEATURE_H */
  67
  68 /*
  69  * Local Variables:
  70  * mode:c
  71  * comment-column:42
  72  * End:
  73  */