160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
/**************************************************************************
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*
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* Copyright 2008 Dennis Smit
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* AUTHORS, COPYRIGHT HOLDERS, AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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***************************************************************************/
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/**
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* @file
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* CPU feature detection.
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*
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* @author Dennis Smit
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* @author Based on the work of Eric Anholt <anholt@FreeBSD.org>
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*/
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#ifndef _UTIL_CPU_DETECT_H
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#define _UTIL_CPU_DETECT_H
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#include <stdbool.h>
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#include "pipe/p_config.h"
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#include "util/u_thread.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum cpu_family {
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CPU_UNKNOWN,
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CPU_AMD_ZEN1_ZEN2,
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CPU_AMD_ZEN_HYGON,
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CPU_AMD_ZEN3,
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CPU_AMD_ZEN_NEXT,
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CPU_AMD_LAST,
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};
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typedef uint32_t util_affinity_mask[UTIL_MAX_CPUS / 32];
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struct util_cpu_caps_t {
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/**
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* Number of CPUs available to the process.
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*
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* This will be less than or equal to \c max_cpus. This is the number of
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* CPUs that are online and available to the process.
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*/
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int16_t nr_cpus;
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/**
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* Maximum number of CPUs that can be online in the system.
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*
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* This will be greater than or equal to \c nr_cpus. This is the number of
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* CPUs installed in the system. \c nr_cpus will be less if some CPUs are
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* offline.
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*/
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int16_t max_cpus;
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enum cpu_family family;
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/* Feature flags */
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int x86_cpu_type;
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unsigned cacheline;
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unsigned has_intel:1;
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unsigned has_tsc:1;
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unsigned has_mmx:1;
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unsigned has_mmx2:1;
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unsigned has_sse:1;
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unsigned has_sse2:1;
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unsigned has_sse3:1;
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unsigned has_ssse3:1;
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unsigned has_sse4_1:1;
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unsigned has_sse4_2:1;
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unsigned has_popcnt:1;
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unsigned has_avx:1;
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unsigned has_avx2:1;
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unsigned has_f16c:1;
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unsigned has_fma:1;
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unsigned has_3dnow:1;
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unsigned has_3dnow_ext:1;
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unsigned has_xop:1;
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unsigned has_altivec:1;
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unsigned has_vsx:1;
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unsigned has_daz:1;
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unsigned has_neon:1;
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unsigned has_msa:1;
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unsigned has_avx512f:1;
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unsigned has_avx512dq:1;
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unsigned has_avx512ifma:1;
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unsigned has_avx512pf:1;
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unsigned has_avx512er:1;
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unsigned has_avx512cd:1;
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unsigned has_avx512bw:1;
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unsigned has_avx512vl:1;
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unsigned has_avx512vbmi:1;
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unsigned num_L3_caches;
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unsigned num_cpu_mask_bits;
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uint16_t cpu_to_L3[UTIL_MAX_CPUS];
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/* Affinity masks for each L3 cache. */
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util_affinity_mask *L3_affinity_mask;
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};
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#define U_CPU_INVALID_L3 0xffff
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static inline const struct util_cpu_caps_t *
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util_get_cpu_caps(void)
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{
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extern struct util_cpu_caps_t util_cpu_caps;
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/* If you hit this assert, it means that something is using the
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* cpu-caps without having first called util_cpu_detect()
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*/
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assert(util_cpu_caps.nr_cpus >= 1);
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return &util_cpu_caps;
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}
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void util_cpu_detect(void);
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static inline bool
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util_cpu_caps_has_zarch(void)
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{
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#if defined(PIPE_ARCH_S390)
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return true;
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#else
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return false;
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#endif
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _UTIL_CPU_DETECT_H */
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