kfd_crat.h revision 1.1.1.2
1 /* $NetBSD: kfd_crat.h,v 1.1.1.2 2021/12/18 20:11:15 riastradh Exp $ */ 2 3 /* 4 * Copyright 2014 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifndef KFD_CRAT_H_INCLUDED 26 #define KFD_CRAT_H_INCLUDED 27 28 #include <linux/types.h> 29 30 #pragma pack(1) 31 32 /* 33 * 4CC signature values for the CRAT and CDIT ACPI tables 34 */ 35 36 #define CRAT_SIGNATURE "CRAT" 37 #define CDIT_SIGNATURE "CDIT" 38 39 /* 40 * Component Resource Association Table (CRAT) 41 */ 42 43 #define CRAT_OEMID_LENGTH 6 44 #define CRAT_OEMTABLEID_LENGTH 8 45 #define CRAT_RESERVED_LENGTH 6 46 47 #define CRAT_OEMID_64BIT_MASK ((1ULL << (CRAT_OEMID_LENGTH * 8)) - 1) 48 49 /* Compute Unit flags */ 50 #define COMPUTE_UNIT_CPU (1 << 0) /* Create Virtual CRAT for CPU */ 51 #define COMPUTE_UNIT_GPU (1 << 1) /* Create Virtual CRAT for GPU */ 52 53 struct crat_header { 54 uint32_t signature; 55 uint32_t length; 56 uint8_t revision; 57 uint8_t checksum; 58 uint8_t oem_id[CRAT_OEMID_LENGTH]; 59 uint8_t oem_table_id[CRAT_OEMTABLEID_LENGTH]; 60 uint32_t oem_revision; 61 uint32_t creator_id; 62 uint32_t creator_revision; 63 uint32_t total_entries; 64 uint16_t num_domains; 65 uint8_t reserved[CRAT_RESERVED_LENGTH]; 66 }; 67 68 /* 69 * The header structure is immediately followed by total_entries of the 70 * data definitions 71 */ 72 73 /* 74 * The currently defined subtype entries in the CRAT 75 */ 76 #define CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY 0 77 #define CRAT_SUBTYPE_MEMORY_AFFINITY 1 78 #define CRAT_SUBTYPE_CACHE_AFFINITY 2 79 #define CRAT_SUBTYPE_TLB_AFFINITY 3 80 #define CRAT_SUBTYPE_CCOMPUTE_AFFINITY 4 81 #define CRAT_SUBTYPE_IOLINK_AFFINITY 5 82 #define CRAT_SUBTYPE_MAX 6 83 84 #define CRAT_SIBLINGMAP_SIZE 32 85 86 /* 87 * ComputeUnit Affinity structure and definitions 88 */ 89 #define CRAT_CU_FLAGS_ENABLED 0x00000001 90 #define CRAT_CU_FLAGS_HOT_PLUGGABLE 0x00000002 91 #define CRAT_CU_FLAGS_CPU_PRESENT 0x00000004 92 #define CRAT_CU_FLAGS_GPU_PRESENT 0x00000008 93 #define CRAT_CU_FLAGS_IOMMU_PRESENT 0x00000010 94 #define CRAT_CU_FLAGS_RESERVED 0xffffffe0 95 96 #define CRAT_COMPUTEUNIT_RESERVED_LENGTH 4 97 98 struct crat_subtype_computeunit { 99 uint8_t type; 100 uint8_t length; 101 uint16_t reserved; 102 uint32_t flags; 103 uint32_t proximity_domain; 104 uint32_t processor_id_low; 105 uint16_t num_cpu_cores; 106 uint16_t num_simd_cores; 107 uint16_t max_waves_simd; 108 uint16_t io_count; 109 uint16_t hsa_capability; 110 uint16_t lds_size_in_kb; 111 uint8_t wave_front_size; 112 uint8_t num_banks; 113 uint16_t micro_engine_id; 114 uint8_t array_count; 115 uint8_t num_cu_per_array; 116 uint8_t num_simd_per_cu; 117 uint8_t max_slots_scatch_cu; 118 uint8_t reserved2[CRAT_COMPUTEUNIT_RESERVED_LENGTH]; 119 }; 120 121 /* 122 * HSA Memory Affinity structure and definitions 123 */ 124 #define CRAT_MEM_FLAGS_ENABLED 0x00000001 125 #define CRAT_MEM_FLAGS_HOT_PLUGGABLE 0x00000002 126 #define CRAT_MEM_FLAGS_NON_VOLATILE 0x00000004 127 #define CRAT_MEM_FLAGS_RESERVED 0xfffffff8 128 129 #define CRAT_MEMORY_RESERVED_LENGTH 8 130 131 struct crat_subtype_memory { 132 uint8_t type; 133 uint8_t length; 134 uint16_t reserved; 135 uint32_t flags; 136 uint32_t proximity_domain; 137 uint32_t base_addr_low; 138 uint32_t base_addr_high; 139 uint32_t length_low; 140 uint32_t length_high; 141 uint32_t width; 142 uint8_t visibility_type; /* for virtual (dGPU) CRAT */ 143 uint8_t reserved2[CRAT_MEMORY_RESERVED_LENGTH - 1]; 144 }; 145 146 /* 147 * HSA Cache Affinity structure and definitions 148 */ 149 #define CRAT_CACHE_FLAGS_ENABLED 0x00000001 150 #define CRAT_CACHE_FLAGS_DATA_CACHE 0x00000002 151 #define CRAT_CACHE_FLAGS_INST_CACHE 0x00000004 152 #define CRAT_CACHE_FLAGS_CPU_CACHE 0x00000008 153 #define CRAT_CACHE_FLAGS_SIMD_CACHE 0x00000010 154 #define CRAT_CACHE_FLAGS_RESERVED 0xffffffe0 155 156 #define CRAT_CACHE_RESERVED_LENGTH 8 157 158 struct crat_subtype_cache { 159 uint8_t type; 160 uint8_t length; 161 uint16_t reserved; 162 uint32_t flags; 163 uint32_t processor_id_low; 164 uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE]; 165 uint32_t cache_size; 166 uint8_t cache_level; 167 uint8_t lines_per_tag; 168 uint16_t cache_line_size; 169 uint8_t associativity; 170 uint8_t cache_properties; 171 uint16_t cache_latency; 172 uint8_t reserved2[CRAT_CACHE_RESERVED_LENGTH]; 173 }; 174 175 /* 176 * HSA TLB Affinity structure and definitions 177 */ 178 #define CRAT_TLB_FLAGS_ENABLED 0x00000001 179 #define CRAT_TLB_FLAGS_DATA_TLB 0x00000002 180 #define CRAT_TLB_FLAGS_INST_TLB 0x00000004 181 #define CRAT_TLB_FLAGS_CPU_TLB 0x00000008 182 #define CRAT_TLB_FLAGS_SIMD_TLB 0x00000010 183 #define CRAT_TLB_FLAGS_RESERVED 0xffffffe0 184 185 #define CRAT_TLB_RESERVED_LENGTH 4 186 187 struct crat_subtype_tlb { 188 uint8_t type; 189 uint8_t length; 190 uint16_t reserved; 191 uint32_t flags; 192 uint32_t processor_id_low; 193 uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE]; 194 uint32_t tlb_level; 195 uint8_t data_tlb_associativity_2mb; 196 uint8_t data_tlb_size_2mb; 197 uint8_t instruction_tlb_associativity_2mb; 198 uint8_t instruction_tlb_size_2mb; 199 uint8_t data_tlb_associativity_4k; 200 uint8_t data_tlb_size_4k; 201 uint8_t instruction_tlb_associativity_4k; 202 uint8_t instruction_tlb_size_4k; 203 uint8_t data_tlb_associativity_1gb; 204 uint8_t data_tlb_size_1gb; 205 uint8_t instruction_tlb_associativity_1gb; 206 uint8_t instruction_tlb_size_1gb; 207 uint8_t reserved2[CRAT_TLB_RESERVED_LENGTH]; 208 }; 209 210 /* 211 * HSA CCompute/APU Affinity structure and definitions 212 */ 213 #define CRAT_CCOMPUTE_FLAGS_ENABLED 0x00000001 214 #define CRAT_CCOMPUTE_FLAGS_RESERVED 0xfffffffe 215 216 #define CRAT_CCOMPUTE_RESERVED_LENGTH 16 217 218 struct crat_subtype_ccompute { 219 uint8_t type; 220 uint8_t length; 221 uint16_t reserved; 222 uint32_t flags; 223 uint32_t processor_id_low; 224 uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE]; 225 uint32_t apu_size; 226 uint8_t reserved2[CRAT_CCOMPUTE_RESERVED_LENGTH]; 227 }; 228 229 /* 230 * HSA IO Link Affinity structure and definitions 231 */ 232 #define CRAT_IOLINK_FLAGS_ENABLED (1 << 0) 233 #define CRAT_IOLINK_FLAGS_NON_COHERENT (1 << 1) 234 #define CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT (1 << 2) 235 #define CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT (1 << 3) 236 #define CRAT_IOLINK_FLAGS_NO_PEER_TO_PEER_DMA (1 << 4) 237 #define CRAT_IOLINK_FLAGS_BI_DIRECTIONAL (1 << 31) 238 #define CRAT_IOLINK_FLAGS_RESERVED_MASK 0x7fffffe0 239 240 /* 241 * IO interface types 242 */ 243 #define CRAT_IOLINK_TYPE_UNDEFINED 0 244 #define CRAT_IOLINK_TYPE_HYPERTRANSPORT 1 245 #define CRAT_IOLINK_TYPE_PCIEXPRESS 2 246 #define CRAT_IOLINK_TYPE_AMBA 3 247 #define CRAT_IOLINK_TYPE_MIPI 4 248 #define CRAT_IOLINK_TYPE_QPI_1_1 5 249 #define CRAT_IOLINK_TYPE_RESERVED1 6 250 #define CRAT_IOLINK_TYPE_RESERVED2 7 251 #define CRAT_IOLINK_TYPE_RAPID_IO 8 252 #define CRAT_IOLINK_TYPE_INFINIBAND 9 253 #define CRAT_IOLINK_TYPE_RESERVED3 10 254 #define CRAT_IOLINK_TYPE_XGMI 11 255 #define CRAT_IOLINK_TYPE_XGOP 12 256 #define CRAT_IOLINK_TYPE_GZ 13 257 #define CRAT_IOLINK_TYPE_ETHERNET_RDMA 14 258 #define CRAT_IOLINK_TYPE_RDMA_OTHER 15 259 #define CRAT_IOLINK_TYPE_OTHER 16 260 #define CRAT_IOLINK_TYPE_MAX 255 261 262 #define CRAT_IOLINK_RESERVED_LENGTH 24 263 264 struct crat_subtype_iolink { 265 uint8_t type; 266 uint8_t length; 267 uint16_t reserved; 268 uint32_t flags; 269 uint32_t proximity_domain_from; 270 uint32_t proximity_domain_to; 271 uint8_t io_interface_type; 272 uint8_t version_major; 273 uint16_t version_minor; 274 uint32_t minimum_latency; 275 uint32_t maximum_latency; 276 uint32_t minimum_bandwidth_mbs; 277 uint32_t maximum_bandwidth_mbs; 278 uint32_t recommended_transfer_size; 279 uint8_t reserved2[CRAT_IOLINK_RESERVED_LENGTH - 1]; 280 uint8_t num_hops_xgmi; 281 }; 282 283 /* 284 * HSA generic sub-type header 285 */ 286 287 #define CRAT_SUBTYPE_FLAGS_ENABLED 0x00000001 288 289 struct crat_subtype_generic { 290 uint8_t type; 291 uint8_t length; 292 uint16_t reserved; 293 uint32_t flags; 294 }; 295 296 /* 297 * Component Locality Distance Information Table (CDIT) 298 */ 299 #define CDIT_OEMID_LENGTH 6 300 #define CDIT_OEMTABLEID_LENGTH 8 301 302 struct cdit_header { 303 uint32_t signature; 304 uint32_t length; 305 uint8_t revision; 306 uint8_t checksum; 307 uint8_t oem_id[CDIT_OEMID_LENGTH]; 308 uint8_t oem_table_id[CDIT_OEMTABLEID_LENGTH]; 309 uint32_t oem_revision; 310 uint32_t creator_id; 311 uint32_t creator_revision; 312 uint32_t total_entries; 313 uint16_t num_domains; 314 uint8_t entry[1]; 315 }; 316 317 #pragma pack() 318 319 struct kfd_dev; 320 321 int kfd_create_crat_image_acpi(void **crat_image, size_t *size); 322 void kfd_destroy_crat_image(void *crat_image); 323 int kfd_parse_crat_table(void *crat_image, struct list_head *device_list, 324 uint32_t proximity_domain); 325 int kfd_create_crat_image_virtual(void **crat_image, size_t *size, 326 int flags, struct kfd_dev *kdev, 327 uint32_t proximity_domain); 328 329 #endif /* KFD_CRAT_H_INCLUDED */ 330
Indexes created Mon Oct 27 20:09:55 GMT 2025