1 // Copyright 2017 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef CPU_FEATURES_INCLUDE_CPUINFO_COMMON_H_ 16 #define CPU_FEATURES_INCLUDE_CPUINFO_COMMON_H_ 17 18 #include "cpu_features_macros.h" 19 20 CPU_FEATURES_START_CPP_NAMESPACE 21 22 typedef enum { 23 CPU_FEATURE_CACHE_NULL = 0, 24 CPU_FEATURE_CACHE_DATA = 1, 25 CPU_FEATURE_CACHE_INSTRUCTION = 2, 26 CPU_FEATURE_CACHE_UNIFIED = 3, 27 CPU_FEATURE_CACHE_TLB = 4, 28 CPU_FEATURE_CACHE_DTLB = 5, 29 CPU_FEATURE_CACHE_STLB = 6, 30 CPU_FEATURE_CACHE_PREFETCH = 7 31 } CacheType; 32 33 typedef struct { 34 int level; 35 CacheType cache_type; 36 int cache_size; // Cache size in bytes 37 int ways; // Associativity, 0 undefined, 0xFF fully associative 38 int line_size; // Cache line size in bytes 39 int tlb_entries; // number of entries for TLB 40 int partitioning; // number of lines per sector 41 } CacheLevelInfo; 42 43 // Increase this value if more cache levels are needed. 44 #ifndef CPU_FEATURES_MAX_CACHE_LEVEL 45 #define CPU_FEATURES_MAX_CACHE_LEVEL 10 46 #endif 47 typedef struct { 48 int size; 49 CacheLevelInfo levels[CPU_FEATURES_MAX_CACHE_LEVEL]; 50 } CacheInfo; 51 52 CPU_FEATURES_END_CPP_NAMESPACE 53 54 #endif // CPU_FEATURES_INCLUDE_CPUINFO_COMMON_H_ 55