diff options
| -rw-r--r-- | configure.ac | 19 | ||||
| -rw-r--r-- | lib/Makefile.sources | 2 | ||||
| -rw-r--r-- | lib/igt_x86.c | 169 | ||||
| -rw-r--r-- | lib/igt_x86.h | 46 |
4 files changed, 236 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index c852d55d..f05bcb0e 100644 --- a/configure.ac +++ b/configure.ac @@ -80,6 +80,25 @@ AC_CHECK_FUNCS(timer_create, [], [ ]) AC_SUBST(TIMER_LIBS) +dnl Check for CPUID +cpuid="yes" +AC_TRY_LINK([ + #include <cpuid.h> + #include <stddef.h> + ], + [ + int eax, ebx, ecx, edx; + if (__get_cpuid_max(0, NULL) < 4) + return 0; + __cpuid_count(4, 0, eax, ebx, ecx, edx); + ], + [cpuid="yes"], + [cpuid="no"] +) +if test "x$cpuid" = "xyes"; then + AC_DEFINE(HAVE_CPUID_H, 1, [Found a useable cpuid.h]) +fi + # Initialize libtool AC_DISABLE_STATIC AC_PROG_LIBTOOL diff --git a/lib/Makefile.sources b/lib/Makefile.sources index 21adb307..4a5e3d88 100644 --- a/lib/Makefile.sources +++ b/lib/Makefile.sources @@ -22,6 +22,8 @@ libintel_tools_la_SOURCES = \ igt_stats.h \ igt_sysfs.c \ igt_sysfs.h \ + igt_x86.h \ + igt_x86.c \ igt_vgem.c \ igt_vgem.h \ instdone.c \ diff --git a/lib/igt_x86.c b/lib/igt_x86.c new file mode 100644 index 00000000..f40b9a2f --- /dev/null +++ b/lib/igt_x86.c @@ -0,0 +1,169 @@ +/* + * 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 + +#ifdef HAVE_CPUID_H +#include <cpuid.h> +#else +#define __get_cpuid_max(x, y) 0 +#define __cpuid(level, a, b, c, d) a = b = c = d = 0 +#define __cpuid_count(level, count, a, b, c, d) a = b = c = d = 0 +#endif + +#include "igt_x86.h" +#include <stdio.h> + +#define BASIC_CPUID 0x0 +#define EXTENDED_CPUID 0x80000000 + +#ifndef bit_MMX +#define bit_MMX (1 << 23) +#endif + +#ifndef bit_SSE +#define bit_SSE (1 << 25) +#endif + +#ifndef bit_SSE2 +#define bit_SSE2 (1 << 26) +#endif + +#ifndef bit_SSE3 +#define bit_SSE3 (1 << 0) +#endif + +#ifndef bit_SSSE3 +#define bit_SSSE3 (1 << 9) +#endif + +#ifndef bit_SSE4_1 +#define bit_SSE4_1 (1 << 19) +#endif + +#ifndef bit_SSE4_2 +#define bit_SSE4_2 (1 << 20) +#endif + +#ifndef bit_OSXSAVE +#define bit_OSXSAVE (1 << 27) +#endif + +#ifndef bit_AVX +#define bit_AVX (1 << 28) +#endif + +#ifndef bit_AVX2 +#define bit_AVX2 (1<<5) +#endif + +#define xgetbv(index,eax,edx) \ + __asm__ ("xgetbv" : "=a"(eax), "=d"(edx) : "c" (index)) + +#define has_YMM 0x1 + +unsigned igt_x86_features(void) +{ + unsigned max = __get_cpuid_max(BASIC_CPUID, 0); + unsigned 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 *igt_x86_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; +} diff --git a/lib/igt_x86.h b/lib/igt_x86.h new file mode 100644 index 00000000..589d224b --- /dev/null +++ b/lib/igt_x86.h @@ -0,0 +1,46 @@ +/* + * 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> + * + */ + +/* Small wrapper around compiler specific implementation details of cpuid */ + +#ifndef IGT_X86_H +#define IGT_X86_H + +#define MMX 0x1 +#define SSE 0x2 +#define SSE2 0x4 +#define SSE3 0x8 +#define SSSE3 0x10 +#define SSE4_1 0x20 +#define SSE4_2 0x40 +#define AVX 0x80 +#define AVX2 0x100 + +unsigned igt_x86_features(void); +char *igt_x86_features_to_string(unsigned features, char *line); + +#endif /* IGT_X86_H */ |