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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/* ----------------------------------------------------------------------- *3 *4 * Copyright 2002-2004 H. Peter Anvin - All Rights Reserved5 *6 * ----------------------------------------------------------------------- */7 8/*9 * raid6/x86.h10 *11 * Definitions common to x86 and x86-64 RAID-6 code only12 */13 14#ifndef LINUX_RAID_RAID6X86_H15#define LINUX_RAID_RAID6X86_H16 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 25static inline void kernel_fpu_begin(void)26{27}28 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 instructions37 * (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 * Instructions47 */48#define X86_FEATURE_AVX512BW (9*32+30) /* AVX-512 BW (Byte/Word granular)49 * Instructions50 */51#define X86_FEATURE_AVX512VL (9*32+31) /* AVX-512 VL (128/256 Vector Length)52 * Extensions53 */54#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */55 56/* Should work well enough on modern CPUs for testing */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#endif75#endif76