117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2013 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
* Authors:
|
|
* Chris Wilson <chris@chris-wilson.co.uk>
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "sna.h"
|
|
#include "sna_cpuid.h"
|
|
|
|
#define xgetbv(index,eax,edx) \
|
|
__asm__ ("xgetbv" : "=a"(eax), "=d"(edx) : "c" (index))
|
|
|
|
#define has_YMM 0x1
|
|
|
|
unsigned sna_cpu_detect(void)
|
|
{
|
|
unsigned max = __get_cpuid_max(BASIC_CPUID, NULL);
|
|
unsigned int eax, ebx, ecx, edx;
|
|
unsigned features = 0;
|
|
unsigned extra = 0;
|
|
|
|
if (max >= 1) {
|
|
__cpuid(1, eax, ebx, ecx, edx);
|
|
if (ecx & bit_SSE3)
|
|
features |= SSE3;
|
|
|
|
if (ecx & bit_SSSE3)
|
|
features |= SSSE3;
|
|
|
|
if (ecx & bit_SSE4_1)
|
|
features |= SSE4_1;
|
|
|
|
if (ecx & bit_SSE4_2)
|
|
features |= SSE4_2;
|
|
|
|
if (ecx & bit_OSXSAVE) {
|
|
unsigned int bv_eax, bv_ecx;
|
|
xgetbv(0, bv_eax, bv_ecx);
|
|
if ((bv_eax & 6) == 6)
|
|
extra |= has_YMM;
|
|
}
|
|
|
|
if ((extra & has_YMM) && (ecx & bit_AVX))
|
|
features |= AVX;
|
|
|
|
if (edx & bit_MMX)
|
|
features |= MMX;
|
|
|
|
if (edx & bit_SSE)
|
|
features |= SSE;
|
|
|
|
if (edx & bit_SSE2)
|
|
features |= SSE2;
|
|
}
|
|
|
|
if (max >= 7) {
|
|
__cpuid_count(7, 0, eax, ebx, ecx, edx);
|
|
if ((extra & has_YMM) && (ebx & bit_AVX2))
|
|
features |= AVX2;
|
|
}
|
|
|
|
return features;
|
|
}
|
|
|
|
char *sna_cpu_features_to_string(unsigned features, char *line)
|
|
{
|
|
char *ret = line;
|
|
|
|
#ifdef __x86_64__
|
|
line += sprintf (line, "x86-64");
|
|
#else
|
|
line += sprintf (line, "x86");
|
|
#endif
|
|
|
|
if (features & SSE2)
|
|
line += sprintf (line, ", sse2");
|
|
if (features & SSE3)
|
|
line += sprintf (line, ", sse3");
|
|
if (features & SSSE3)
|
|
line += sprintf (line, ", ssse3");
|
|
if (features & SSE4_1)
|
|
line += sprintf (line, ", sse4.1");
|
|
if (features & SSE4_2)
|
|
line += sprintf (line, ", sse4.2");
|
|
if (features & AVX)
|
|
line += sprintf (line, ", avx");
|
|
if (features & AVX2)
|
|
line += sprintf (line, ", avx2");
|
|
|
|
return ret;
|
|
}
|