/* ----------------------------------------------------------------------- * * * Copyright 2002-2004 H. Peter Anvin - All Rights Reserved * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, Inc., 53 Temple Place Ste 330, * Bostom MA 02111-1307, USA; either version 2 of the License, or * (at your option) any later version; incorporated herein by reference. * * ----------------------------------------------------------------------- */ /* * raid6x86.h * * Definitions common to x86 and x86-64 RAID-6 code only */ #ifndef LINUX_RAID_RAID6X86_H #define LINUX_RAID_RAID6X86_H #if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__) #ifdef __KERNEL__ /* Real code */ #include <asm/i387.h> #else /* Dummy code for user space testing */ static inline void kernel_fpu_begin(void) { } static inline void kernel_fpu_end(void) { } #define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */ #define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions * (fast save and restore) */ #define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */ #define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */ #define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */ /* Should work well enough on modern CPUs for testing */ static inline int boot_cpu_has(int flag) { u32 eax = (flag >> 5) ? 0x80000001 : 1; u32 edx; asm volatile("cpuid" : "+a" (eax), "=d" (edx) : : "ecx", "ebx"); return (edx >> (flag & 31)) & 1; } #endif /* ndef __KERNEL__ */ #endif #endif