| 1 | /* ----------------------------------------------------------------------- * |
| 2 | * |
| 3 | * Copyright 2002-2004 H. Peter Anvin - All Rights Reserved |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, Inc., 53 Temple Place Ste 330, |
| 8 | * Boston MA 02111-1307, USA; either version 2 of the License, or |
| 9 | * (at your option) any later version; incorporated herein by reference. |
| 10 | * |
| 11 | * ----------------------------------------------------------------------- */ |
| 12 | |
| 13 | /* |
| 14 | * raid6/x86.h |
| 15 | * |
| 16 | * Definitions common to x86 and x86-64 RAID-6 code only |
| 17 | */ |
| 18 | |
| 19 | #ifndef LINUX_RAID_RAID6X86_H |
| 20 | #define LINUX_RAID_RAID6X86_H |
| 21 | |
| 22 | #if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__) |
| 23 | |
| 24 | #ifdef __KERNEL__ /* Real code */ |
| 25 | |
| 26 | #include <asm/fpu/api.h> |
| 27 | |
| 28 | #else /* Dummy code for user space testing */ |
| 29 | |
| 30 | static inline void kernel_fpu_begin(void) |
| 31 | { |
| 32 | } |
| 33 | |
| 34 | static inline void kernel_fpu_end(void) |
| 35 | { |
| 36 | } |
| 37 | |
| 38 | #define __aligned(x) __attribute__((aligned(x))) |
| 39 | |
| 40 | #define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */ |
| 41 | #define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions |
| 42 | * (fast save and restore) */ |
| 43 | #define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */ |
| 44 | #define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */ |
| 45 | #define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */ |
| 46 | #define X86_FEATURE_SSSE3 (4*32+ 9) /* Supplemental SSE-3 */ |
| 47 | #define X86_FEATURE_AVX (4*32+28) /* Advanced Vector Extensions */ |
| 48 | #define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */ |
| 49 | #define X86_FEATURE_AVX512F (9*32+16) /* AVX-512 Foundation */ |
| 50 | #define X86_FEATURE_AVX512DQ (9*32+17) /* AVX-512 DQ (Double/Quad granular) |
| 51 | * Instructions |
| 52 | */ |
| 53 | #define X86_FEATURE_AVX512BW (9*32+30) /* AVX-512 BW (Byte/Word granular) |
| 54 | * Instructions |
| 55 | */ |
| 56 | #define X86_FEATURE_AVX512VL (9*32+31) /* AVX-512 VL (128/256 Vector Length) |
| 57 | * Extensions |
| 58 | */ |
| 59 | #define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */ |
| 60 | |
| 61 | /* Should work well enough on modern CPUs for testing */ |
| 62 | static inline int boot_cpu_has(int flag) |
| 63 | { |
| 64 | u32 eax, ebx, ecx, edx; |
| 65 | |
| 66 | eax = (flag & 0x100) ? 7 : |
| 67 | (flag & 0x20) ? 0x80000001 : 1; |
| 68 | ecx = 0; |
| 69 | |
| 70 | asm volatile("cpuid" |
| 71 | : "+a" (eax), "=b" (ebx), "=d" (edx), "+c" (ecx)); |
| 72 | |
| 73 | return ((flag & 0x100 ? ebx : |
| 74 | (flag & 0x80) ? ecx : edx) >> (flag & 31)) & 1; |
| 75 | } |
| 76 | |
| 77 | #endif /* ndef __KERNEL__ */ |
| 78 | |
| 79 | #endif |
| 80 | #endif |