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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * cpufeature.h
3 *
4 * Defines x86 CPU feature bits
5 */
6
7#ifndef __ASM_X8664_CPUFEATURE_H
8#define __ASM_X8664_CPUFEATURE_H
9
H. Peter Anvin5b7abc62005-05-01 08:58:49 -070010#define NCAPINTS 7 /* N 32-bit words worth of info */
Linus Torvalds1da177e2005-04-16 15:20:36 -070011
12/* Intel-defined CPU features, CPUID level 0x00000001, word 0 */
13#define X86_FEATURE_FPU (0*32+ 0) /* Onboard FPU */
14#define X86_FEATURE_VME (0*32+ 1) /* Virtual Mode Extensions */
15#define X86_FEATURE_DE (0*32+ 2) /* Debugging Extensions */
16#define X86_FEATURE_PSE (0*32+ 3) /* Page Size Extensions */
17#define X86_FEATURE_TSC (0*32+ 4) /* Time Stamp Counter */
18#define X86_FEATURE_MSR (0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */
19#define X86_FEATURE_PAE (0*32+ 6) /* Physical Address Extensions */
20#define X86_FEATURE_MCE (0*32+ 7) /* Machine Check Architecture */
21#define X86_FEATURE_CX8 (0*32+ 8) /* CMPXCHG8 instruction */
22#define X86_FEATURE_APIC (0*32+ 9) /* Onboard APIC */
23#define X86_FEATURE_SEP (0*32+11) /* SYSENTER/SYSEXIT */
24#define X86_FEATURE_MTRR (0*32+12) /* Memory Type Range Registers */
25#define X86_FEATURE_PGE (0*32+13) /* Page Global Enable */
26#define X86_FEATURE_MCA (0*32+14) /* Machine Check Architecture */
27#define X86_FEATURE_CMOV (0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */
28#define X86_FEATURE_PAT (0*32+16) /* Page Attribute Table */
29#define X86_FEATURE_PSE36 (0*32+17) /* 36-bit PSEs */
30#define X86_FEATURE_PN (0*32+18) /* Processor serial number */
31#define X86_FEATURE_CLFLSH (0*32+19) /* Supports the CLFLUSH instruction */
32#define X86_FEATURE_DTES (0*32+21) /* Debug Trace Store */
33#define X86_FEATURE_ACPI (0*32+22) /* ACPI via MSR */
34#define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */
35#define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
36 /* of FPU context), and CR4.OSFXSR available */
37#define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */
38#define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */
39#define X86_FEATURE_SELFSNOOP (0*32+27) /* CPU self snoop */
40#define X86_FEATURE_HT (0*32+28) /* Hyper-Threading */
41#define X86_FEATURE_ACC (0*32+29) /* Automatic clock control */
42#define X86_FEATURE_IA64 (0*32+30) /* IA-64 processor */
43
44/* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
45/* Don't duplicate feature flags which are redundant with Intel! */
46#define X86_FEATURE_SYSCALL (1*32+11) /* SYSCALL/SYSRET */
47#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */
48#define X86_FEATURE_FXSR_OPT (1*32+25) /* FXSR optimizations */
49#define X86_FEATURE_LM (1*32+29) /* Long Mode (x86-64) */
50#define X86_FEATURE_3DNOWEXT (1*32+30) /* AMD 3DNow! extensions */
51#define X86_FEATURE_3DNOW (1*32+31) /* 3DNow! */
52
53/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
54#define X86_FEATURE_RECOVERY (2*32+ 0) /* CPU in recovery mode */
55#define X86_FEATURE_LONGRUN (2*32+ 1) /* Longrun power control */
56#define X86_FEATURE_LRTI (2*32+ 3) /* LongRun table interface */
57
58/* Other features, Linux-defined mapping, word 3 */
59/* This range is used for feature bits which conflict or are synthesized */
60#define X86_FEATURE_CXMMX (3*32+ 0) /* Cyrix MMX extensions */
61#define X86_FEATURE_K6_MTRR (3*32+ 1) /* AMD K6 nonstandard MTRRs */
62#define X86_FEATURE_CYRIX_ARR (3*32+ 2) /* Cyrix ARRs (= MTRRs) */
63#define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */
64#define X86_FEATURE_K8_C (3*32+ 4) /* C stepping K8 */
Andi Kleenc29601e2005-04-16 15:25:05 -070065#define X86_FEATURE_CONSTANT_TSC (3*32+5) /* TSC runs at constant rate */
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
67/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
68#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
69#define X86_FEATURE_MWAIT (4*32+ 3) /* Monitor/Mwait support */
70#define X86_FEATURE_DSCPL (4*32+ 4) /* CPL Qualified Debug Store */
71#define X86_FEATURE_EST (4*32+ 7) /* Enhanced SpeedStep */
72#define X86_FEATURE_TM2 (4*32+ 8) /* Thermal Monitor 2 */
73#define X86_FEATURE_CID (4*32+10) /* Context ID */
74#define X86_FEATURE_CX16 (4*32+13) /* CMPXCHG16B */
75#define X86_FEATURE_XTPR (4*32+14) /* Send Task Priority Messages */
76
H. Peter Anvin5b7abc62005-05-01 08:58:49 -070077/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
78#define X86_FEATURE_XSTORE (5*32+ 2) /* on-CPU RNG present (xstore insn) */
79#define X86_FEATURE_XSTORE_EN (5*32+ 3) /* on-CPU RNG enabled */
80#define X86_FEATURE_XCRYPT (5*32+ 6) /* on-CPU crypto (xcrypt insn) */
81#define X86_FEATURE_XCRYPT_EN (5*32+ 7) /* on-CPU crypto enabled */
82
83/* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
84#define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */
85#define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
87#define cpu_has(c, bit) test_bit(bit, (c)->x86_capability)
88#define boot_cpu_has(bit) test_bit(bit, boot_cpu_data.x86_capability)
89
90#define cpu_has_fpu 1
91#define cpu_has_vme 0
92#define cpu_has_de 1
93#define cpu_has_pse 1
94#define cpu_has_tsc 1
95#define cpu_has_pae ___BUG___
96#define cpu_has_pge 1
97#define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC)
98#define cpu_has_mtrr 1
99#define cpu_has_mmx 1
100#define cpu_has_fxsr 1
101#define cpu_has_xmm 1
102#define cpu_has_xmm2 1
103#define cpu_has_xmm3 boot_cpu_has(X86_FEATURE_XMM3)
104#define cpu_has_ht boot_cpu_has(X86_FEATURE_HT)
105#define cpu_has_mp 1 /* XXX */
106#define cpu_has_k6_mtrr 0
107#define cpu_has_cyrix_arr 0
108#define cpu_has_centaur_mcr 0
109#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
110
111#endif /* __ASM_X8664_CPUFEATURE_H */