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 #ifndef __ASSEMBLY__ 11 #include <linux/bitops.h> 12 #endif 13 #include <asm/required-features.h> 14 15 #define NCAPINTS 8 /* N 32-bit words worth of info */ 16 17 /* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */ 18 #define X86_FEATURE_FPU (0*32+ 0) /* Onboard FPU */ 19 #define X86_FEATURE_VME (0*32+ 1) /* Virtual Mode Extensions */ 20 #define X86_FEATURE_DE (0*32+ 2) /* Debugging Extensions */ 21 #define X86_FEATURE_PSE (0*32+ 3) /* Page Size Extensions */ 22 #define X86_FEATURE_TSC (0*32+ 4) /* Time Stamp Counter */ 23 #define X86_FEATURE_MSR (0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */ 24 #define X86_FEATURE_PAE (0*32+ 6) /* Physical Address Extensions */ 25 #define X86_FEATURE_MCE (0*32+ 7) /* Machine Check Architecture */ 26 #define X86_FEATURE_CX8 (0*32+ 8) /* CMPXCHG8 instruction */ 27 #define X86_FEATURE_APIC (0*32+ 9) /* Onboard APIC */ 28 #define X86_FEATURE_SEP (0*32+11) /* SYSENTER/SYSEXIT */ 29 #define X86_FEATURE_MTRR (0*32+12) /* Memory Type Range Registers */ 30 #define X86_FEATURE_PGE (0*32+13) /* Page Global Enable */ 31 #define X86_FEATURE_MCA (0*32+14) /* Machine Check Architecture */ 32 #define X86_FEATURE_CMOV (0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */ 33 #define X86_FEATURE_PAT (0*32+16) /* Page Attribute Table */ 34 #define X86_FEATURE_PSE36 (0*32+17) /* 36-bit PSEs */ 35 #define X86_FEATURE_PN (0*32+18) /* Processor serial number */ 36 #define X86_FEATURE_CLFLSH (0*32+19) /* Supports the CLFLUSH instruction */ 37 #define X86_FEATURE_DS (0*32+21) /* Debug Store */ 38 #define X86_FEATURE_ACPI (0*32+22) /* ACPI via MSR */ 39 #define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */ 40 #define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */ 41 /* of FPU context), and CR4.OSFXSR available */ 42 #define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */ 43 #define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */ 44 #define X86_FEATURE_SELFSNOOP (0*32+27) /* CPU self snoop */ 45 #define X86_FEATURE_HT (0*32+28) /* Hyper-Threading */ 46 #define X86_FEATURE_ACC (0*32+29) /* Automatic clock control */ 47 #define X86_FEATURE_IA64 (0*32+30) /* IA-64 processor */ 48 49 /* AMD-defined CPU features, CPUID level 0x80000001, word 1 */ 50 /* Don't duplicate feature flags which are redundant with Intel! */ 51 #define X86_FEATURE_SYSCALL (1*32+11) /* SYSCALL/SYSRET */ 52 #define X86_FEATURE_MP (1*32+19) /* MP Capable. */ 53 #define X86_FEATURE_NX (1*32+20) /* Execute Disable */ 54 #define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */ 55 #define X86_FEATURE_RDTSCP (1*32+27) /* RDTSCP */ 56 #define X86_FEATURE_LM (1*32+29) /* Long Mode (x86-64) */ 57 #define X86_FEATURE_3DNOWEXT (1*32+30) /* AMD 3DNow! extensions */ 58 #define X86_FEATURE_3DNOW (1*32+31) /* 3DNow! */ 59 60 /* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */ 61 #define X86_FEATURE_RECOVERY (2*32+ 0) /* CPU in recovery mode */ 62 #define X86_FEATURE_LONGRUN (2*32+ 1) /* Longrun power control */ 63 #define X86_FEATURE_LRTI (2*32+ 3) /* LongRun table interface */ 64 65 /* Other features, Linux-defined mapping, word 3 */ 66 /* This range is used for feature bits which conflict or are synthesized */ 67 #define X86_FEATURE_CXMMX (3*32+ 0) /* Cyrix MMX extensions */ 68 #define X86_FEATURE_K6_MTRR (3*32+ 1) /* AMD K6 nonstandard MTRRs */ 69 #define X86_FEATURE_CYRIX_ARR (3*32+ 2) /* Cyrix ARRs (= MTRRs) */ 70 #define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */ 71 /* cpu types for specific tunings: */ 72 #define X86_FEATURE_K8 (3*32+ 4) /* Opteron, Athlon64 */ 73 #define X86_FEATURE_K7 (3*32+ 5) /* Athlon */ 74 #define X86_FEATURE_P3 (3*32+ 6) /* P3 */ 75 #define X86_FEATURE_P4 (3*32+ 7) /* P4 */ 76 #define X86_FEATURE_CONSTANT_TSC (3*32+ 8) /* TSC ticks at a constant rate */ 77 #define X86_FEATURE_UP (3*32+ 9) /* smp kernel running on up */ 78 #define X86_FEATURE_FXSAVE_LEAK (3*32+10) /* FXSAVE leaks FOP/FIP/FOP */ 79 #define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */ 80 #define X86_FEATURE_PEBS (3*32+12) /* Precise-Event Based Sampling */ 81 #define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */ 82 /* 14 free */ 83 #define X86_FEATURE_SYNC_RDTSC (3*32+15) /* RDTSC synchronizes the CPU */ 84 #define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well on this CPU */ 85 86 /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ 87 #define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */ 88 #define X86_FEATURE_MWAIT (4*32+ 3) /* Monitor/Mwait support */ 89 #define X86_FEATURE_DSCPL (4*32+ 4) /* CPL Qualified Debug Store */ 90 #define X86_FEATURE_EST (4*32+ 7) /* Enhanced SpeedStep */ 91 #define X86_FEATURE_TM2 (4*32+ 8) /* Thermal Monitor 2 */ 92 #define X86_FEATURE_CID (4*32+10) /* Context ID */ 93 #define X86_FEATURE_CX16 (4*32+13) /* CMPXCHG16B */ 94 #define X86_FEATURE_XTPR (4*32+14) /* Send Task Priority Messages */ 95 #define X86_FEATURE_DCA (4*32+18) /* Direct Cache Access */ 96 97 /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */ 98 #define X86_FEATURE_XSTORE (5*32+ 2) /* on-CPU RNG present (xstore insn) */ 99 #define X86_FEATURE_XSTORE_EN (5*32+ 3) /* on-CPU RNG enabled */ 100 #define X86_FEATURE_XCRYPT (5*32+ 6) /* on-CPU crypto (xcrypt insn) */ 101 #define X86_FEATURE_XCRYPT_EN (5*32+ 7) /* on-CPU crypto enabled */ 102 #define X86_FEATURE_ACE2 (5*32+ 8) /* Advanced Cryptography Engine v2 */ 103 #define X86_FEATURE_ACE2_EN (5*32+ 9) /* ACE v2 enabled */ 104 #define X86_FEATURE_PHE (5*32+ 10) /* PadLock Hash Engine */ 105 #define X86_FEATURE_PHE_EN (5*32+ 11) /* PHE enabled */ 106 #define X86_FEATURE_PMM (5*32+ 12) /* PadLock Montgomery Multiplier */ 107 #define X86_FEATURE_PMM_EN (5*32+ 13) /* PMM enabled */ 108 109 /* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */ 110 #define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */ 111 #define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */ 112 113 /* 114 * Auxiliary flags: Linux defined - For features scattered in various 115 * CPUID levels like 0x6, 0xA etc 116 */ 117 #define X86_FEATURE_IDA (7*32+ 0) /* Intel Dynamic Acceleration */ 118 119 #define cpu_has(c, bit) \ 120 (__builtin_constant_p(bit) && \ 121 ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) || \ 122 (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) || \ 123 (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) || \ 124 (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) || \ 125 (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) || \ 126 (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) || \ 127 (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) || \ 128 (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) ) \ 129 ? 1 : \ 130 test_bit(bit, (c)->x86_capability)) 131 #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) 132 133 #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU) 134 #define cpu_has_vme boot_cpu_has(X86_FEATURE_VME) 135 #define cpu_has_de boot_cpu_has(X86_FEATURE_DE) 136 #define cpu_has_pse boot_cpu_has(X86_FEATURE_PSE) 137 #define cpu_has_tsc boot_cpu_has(X86_FEATURE_TSC) 138 #define cpu_has_pae boot_cpu_has(X86_FEATURE_PAE) 139 #define cpu_has_pge boot_cpu_has(X86_FEATURE_PGE) 140 #define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC) 141 #define cpu_has_sep boot_cpu_has(X86_FEATURE_SEP) 142 #define cpu_has_mtrr boot_cpu_has(X86_FEATURE_MTRR) 143 #define cpu_has_mmx boot_cpu_has(X86_FEATURE_MMX) 144 #define cpu_has_fxsr boot_cpu_has(X86_FEATURE_FXSR) 145 #define cpu_has_xmm boot_cpu_has(X86_FEATURE_XMM) 146 #define cpu_has_xmm2 boot_cpu_has(X86_FEATURE_XMM2) 147 #define cpu_has_xmm3 boot_cpu_has(X86_FEATURE_XMM3) 148 #define cpu_has_ht boot_cpu_has(X86_FEATURE_HT) 149 #define cpu_has_mp boot_cpu_has(X86_FEATURE_MP) 150 #define cpu_has_nx boot_cpu_has(X86_FEATURE_NX) 151 #define cpu_has_k6_mtrr boot_cpu_has(X86_FEATURE_K6_MTRR) 152 #define cpu_has_cyrix_arr boot_cpu_has(X86_FEATURE_CYRIX_ARR) 153 #define cpu_has_centaur_mcr boot_cpu_has(X86_FEATURE_CENTAUR_MCR) 154 #define cpu_has_xstore boot_cpu_has(X86_FEATURE_XSTORE) 155 #define cpu_has_xstore_enabled boot_cpu_has(X86_FEATURE_XSTORE_EN) 156 #define cpu_has_xcrypt boot_cpu_has(X86_FEATURE_XCRYPT) 157 #define cpu_has_xcrypt_enabled boot_cpu_has(X86_FEATURE_XCRYPT_EN) 158 #define cpu_has_ace2 boot_cpu_has(X86_FEATURE_ACE2) 159 #define cpu_has_ace2_enabled boot_cpu_has(X86_FEATURE_ACE2_EN) 160 #define cpu_has_phe boot_cpu_has(X86_FEATURE_PHE) 161 #define cpu_has_phe_enabled boot_cpu_has(X86_FEATURE_PHE_EN) 162 #define cpu_has_pmm boot_cpu_has(X86_FEATURE_PMM) 163 #define cpu_has_pmm_enabled boot_cpu_has(X86_FEATURE_PMM_EN) 164 #define cpu_has_ds boot_cpu_has(X86_FEATURE_DS) 165 #define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS) 166 #define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH) 167 #define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS) 168 169 #endif /* __ASM_I386_CPUFEATURE_H */ 170 171 /* 172 * Local Variables: 173 * mode:c 174 * comment-column:42 175 * End: 176 */ 177