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75 lines
2.1 KiB
75 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* ----------------------------------------------------------------------- * |
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* |
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* Copyright 2002-2004 H. Peter Anvin - All Rights Reserved |
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* |
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* ----------------------------------------------------------------------- */ |
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/* |
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* raid6/x86.h |
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* |
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* Definitions common to x86 and x86-64 RAID-6 code only |
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*/ |
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#ifndef LINUX_RAID_RAID6X86_H |
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#define LINUX_RAID_RAID6X86_H |
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#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__) |
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#ifdef __KERNEL__ /* Real code */ |
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#include <asm/fpu/api.h> |
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#else /* Dummy code for user space testing */ |
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static inline void kernel_fpu_begin(void) |
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{ |
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} |
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static inline void kernel_fpu_end(void) |
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{ |
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} |
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#define __aligned(x) __attribute__((aligned(x))) |
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#define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */ |
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#define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions |
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* (fast save and restore) */ |
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#define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */ |
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#define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */ |
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#define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */ |
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#define X86_FEATURE_SSSE3 (4*32+ 9) /* Supplemental SSE-3 */ |
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#define X86_FEATURE_AVX (4*32+28) /* Advanced Vector Extensions */ |
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#define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */ |
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#define X86_FEATURE_AVX512F (9*32+16) /* AVX-512 Foundation */ |
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#define X86_FEATURE_AVX512DQ (9*32+17) /* AVX-512 DQ (Double/Quad granular) |
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* Instructions |
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*/ |
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#define X86_FEATURE_AVX512BW (9*32+30) /* AVX-512 BW (Byte/Word granular) |
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* Instructions |
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*/ |
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#define X86_FEATURE_AVX512VL (9*32+31) /* AVX-512 VL (128/256 Vector Length) |
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* Extensions |
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*/ |
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#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */ |
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/* Should work well enough on modern CPUs for testing */ |
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static inline int boot_cpu_has(int flag) |
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{ |
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u32 eax, ebx, ecx, edx; |
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eax = (flag & 0x100) ? 7 : |
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(flag & 0x20) ? 0x80000001 : 1; |
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ecx = 0; |
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asm volatile("cpuid" |
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: "+a" (eax), "=b" (ebx), "=d" (edx), "+c" (ecx)); |
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return ((flag & 0x100 ? ebx : |
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(flag & 0x80) ? ecx : edx) >> (flag & 31)) & 1; |
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} |
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#endif /* ndef __KERNEL__ */ |
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#endif |
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#endif
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