1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* ----------------------------------------------------------------------- * 3 * 4 * Copyright 2002-2004 H. Peter Anvin - All Rights Reserved 5 * 6 * ----------------------------------------------------------------------- */ 7 8 /* 9 * raid6/x86.h 10 * 11 * Definitions common to x86 and x86-64 RAID-6 code only 12 */ 13 14 #ifndef LINUX_RAID_RAID6X86_H 15 #define LINUX_RAID_RAID6X86_H 16 17 #if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__) 18 19 #ifdef __KERNEL__ /* Real code */ 20 21 #include <asm/fpu/api.h> 22 23 #else /* Dummy code for user space testing */ 24 kernel_fpu_begin(void)25static inline void kernel_fpu_begin(void) 26 { 27 } 28 kernel_fpu_end(void)29static inline void kernel_fpu_end(void) 30 { 31 } 32 33 #define __aligned(x) __attribute__((aligned(x))) 34 35 #define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */ 36 #define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions 37 * (fast save and restore) */ 38 #define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */ 39 #define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */ 40 #define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */ 41 #define X86_FEATURE_SSSE3 (4*32+ 9) /* Supplemental SSE-3 */ 42 #define X86_FEATURE_AVX (4*32+28) /* Advanced Vector Extensions */ 43 #define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */ 44 #define X86_FEATURE_AVX512F (9*32+16) /* AVX-512 Foundation */ 45 #define X86_FEATURE_AVX512DQ (9*32+17) /* AVX-512 DQ (Double/Quad granular) 46 * Instructions 47 */ 48 #define X86_FEATURE_AVX512BW (9*32+30) /* AVX-512 BW (Byte/Word granular) 49 * Instructions 50 */ 51 #define X86_FEATURE_AVX512VL (9*32+31) /* AVX-512 VL (128/256 Vector Length) 52 * Extensions 53 */ 54 #define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */ 55 56 /* Should work well enough on modern CPUs for testing */ boot_cpu_has(int flag)57static inline int boot_cpu_has(int flag) 58 { 59 u32 eax, ebx, ecx, edx; 60 61 eax = (flag & 0x100) ? 7 : 62 (flag & 0x20) ? 0x80000001 : 1; 63 ecx = 0; 64 65 asm volatile("cpuid" 66 : "+a" (eax), "=b" (ebx), "=d" (edx), "+c" (ecx)); 67 68 return ((flag & 0x100 ? ebx : 69 (flag & 0x80) ? ecx : edx) >> (flag & 31)) & 1; 70 } 71 72 #endif /* ndef __KERNEL__ */ 73 74 #endif 75 #endif 76