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1da177e4 LT |
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, | |
93ed05e2 | 8 | * Boston MA 02111-1307, USA; either version 2 of the License, or |
1da177e4 LT |
9 | * (at your option) any later version; incorporated herein by reference. |
10 | * | |
11 | * ----------------------------------------------------------------------- */ | |
12 | ||
13 | /* | |
a8e026c7 | 14 | * raid6/x86.h |
1da177e4 LT |
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 | ||
ca5cd877 | 22 | #if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__) |
1da177e4 | 23 | |
1da177e4 LT |
24 | #ifdef __KERNEL__ /* Real code */ |
25 | ||
df6b35f4 | 26 | #include <asm/fpu/api.h> |
1da177e4 LT |
27 | |
28 | #else /* Dummy code for user space testing */ | |
29 | ||
a723406c | 30 | static inline void kernel_fpu_begin(void) |
1da177e4 | 31 | { |
1da177e4 LT |
32 | } |
33 | ||
a723406c | 34 | static inline void kernel_fpu_end(void) |
1da177e4 | 35 | { |
1da177e4 LT |
36 | } |
37 | ||
2dbf7084 JK |
38 | #define __aligned(x) __attribute__((aligned(x))) |
39 | ||
a723406c PA |
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 */ | |
2dbf7084 JK |
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 */ | |
7056741f | 48 | #define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */ |
a723406c | 49 | #define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */ |
1da177e4 | 50 | |
a723406c PA |
51 | /* Should work well enough on modern CPUs for testing */ |
52 | static inline int boot_cpu_has(int flag) | |
1da177e4 | 53 | { |
7056741f JK |
54 | u32 eax, ebx, ecx, edx; |
55 | ||
56 | eax = (flag & 0x100) ? 7 : | |
57 | (flag & 0x20) ? 0x80000001 : 1; | |
58 | ecx = 0; | |
1da177e4 | 59 | |
a723406c | 60 | asm volatile("cpuid" |
7056741f | 61 | : "+a" (eax), "=b" (ebx), "=d" (edx), "+c" (ecx)); |
1da177e4 | 62 | |
7056741f JK |
63 | return ((flag & 0x100 ? ebx : |
64 | (flag & 0x80) ? ecx : edx) >> (flag & 31)) & 1; | |
1da177e4 LT |
65 | } |
66 | ||
1da177e4 LT |
67 | #endif /* ndef __KERNEL__ */ |
68 | ||
69 | #endif | |
70 | #endif |