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/i387.h>
27
28#else /* Dummy code for user space testing */
29
30static inline void kernel_fpu_begin(void)
31{
32}
33
34static 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_MMXEXT	(1*32+22) /* AMD MMX extensions */
49
50/* Should work well enough on modern CPUs for testing */
51static inline int boot_cpu_has(int flag)
52{
53	u32 eax = (flag & 0x20) ? 0x80000001 : 1;
54	u32 ecx, edx;
 
 
 
55
56	asm volatile("cpuid"
57		     : "+a" (eax), "=d" (edx), "=c" (ecx)
58		     : : "ebx");
59
60	return ((flag & 0x80 ? ecx : edx) >> (flag & 31)) & 1;
 
61}
62
63#endif /* ndef __KERNEL__ */
64
65#endif
66#endif

 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
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 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 */
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