1 /* 2 * Copyright 2015-2017 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 */ 22 23 #include <linux/pci.h> 24 #include <linux/acpi.h> 25 #include "kfd_crat.h" 26 #include "kfd_priv.h" 27 #include "kfd_topology.h" 28 #include "kfd_iommu.h" 29 #include "amdgpu_amdkfd.h" 30 31 /* GPU Processor ID base for dGPUs for which VCRAT needs to be created. 32 * GPU processor ID are expressed with Bit[31]=1. 33 * The base is set to 0x8000_0000 + 0x1000 to avoid collision with GPU IDs 34 * used in the CRAT. 35 */ 36 static uint32_t gpu_processor_id_low = 0x80001000; 37 38 /* Return the next available gpu_processor_id and increment it for next GPU 39 * @total_cu_count - Total CUs present in the GPU including ones 40 * masked off 41 */ 42 static inline unsigned int get_and_inc_gpu_processor_id( 43 unsigned int total_cu_count) 44 { 45 int current_id = gpu_processor_id_low; 46 47 gpu_processor_id_low += total_cu_count; 48 return current_id; 49 } 50 51 /* Static table to describe GPU Cache information */ 52 struct kfd_gpu_cache_info { 53 uint32_t cache_size; 54 uint32_t cache_level; 55 uint32_t flags; 56 /* Indicates how many Compute Units share this cache 57 * Value = 1 indicates the cache is not shared 58 */ 59 uint32_t num_cu_shared; 60 }; 61 62 static struct kfd_gpu_cache_info kaveri_cache_info[] = { 63 { 64 /* TCP L1 Cache per CU */ 65 .cache_size = 16, 66 .cache_level = 1, 67 .flags = (CRAT_CACHE_FLAGS_ENABLED | 68 CRAT_CACHE_FLAGS_DATA_CACHE | 69 CRAT_CACHE_FLAGS_SIMD_CACHE), 70 .num_cu_shared = 1, 71 72 }, 73 { 74 /* Scalar L1 Instruction Cache (in SQC module) per bank */ 75 .cache_size = 16, 76 .cache_level = 1, 77 .flags = (CRAT_CACHE_FLAGS_ENABLED | 78 CRAT_CACHE_FLAGS_INST_CACHE | 79 CRAT_CACHE_FLAGS_SIMD_CACHE), 80 .num_cu_shared = 2, 81 }, 82 { 83 /* Scalar L1 Data Cache (in SQC module) per bank */ 84 .cache_size = 8, 85 .cache_level = 1, 86 .flags = (CRAT_CACHE_FLAGS_ENABLED | 87 CRAT_CACHE_FLAGS_DATA_CACHE | 88 CRAT_CACHE_FLAGS_SIMD_CACHE), 89 .num_cu_shared = 2, 90 }, 91 92 /* TODO: Add L2 Cache information */ 93 }; 94 95 96 static struct kfd_gpu_cache_info carrizo_cache_info[] = { 97 { 98 /* TCP L1 Cache per CU */ 99 .cache_size = 16, 100 .cache_level = 1, 101 .flags = (CRAT_CACHE_FLAGS_ENABLED | 102 CRAT_CACHE_FLAGS_DATA_CACHE | 103 CRAT_CACHE_FLAGS_SIMD_CACHE), 104 .num_cu_shared = 1, 105 }, 106 { 107 /* Scalar L1 Instruction Cache (in SQC module) per bank */ 108 .cache_size = 8, 109 .cache_level = 1, 110 .flags = (CRAT_CACHE_FLAGS_ENABLED | 111 CRAT_CACHE_FLAGS_INST_CACHE | 112 CRAT_CACHE_FLAGS_SIMD_CACHE), 113 .num_cu_shared = 4, 114 }, 115 { 116 /* Scalar L1 Data Cache (in SQC module) per bank. */ 117 .cache_size = 4, 118 .cache_level = 1, 119 .flags = (CRAT_CACHE_FLAGS_ENABLED | 120 CRAT_CACHE_FLAGS_DATA_CACHE | 121 CRAT_CACHE_FLAGS_SIMD_CACHE), 122 .num_cu_shared = 4, 123 }, 124 125 /* TODO: Add L2 Cache information */ 126 }; 127 128 /* NOTE: In future if more information is added to struct kfd_gpu_cache_info 129 * the following ASICs may need a separate table. 130 */ 131 #define hawaii_cache_info kaveri_cache_info 132 #define tonga_cache_info carrizo_cache_info 133 #define fiji_cache_info carrizo_cache_info 134 #define polaris10_cache_info carrizo_cache_info 135 #define polaris11_cache_info carrizo_cache_info 136 #define polaris12_cache_info carrizo_cache_info 137 #define vegam_cache_info carrizo_cache_info 138 /* TODO - check & update Vega10 cache details */ 139 #define vega10_cache_info carrizo_cache_info 140 #define raven_cache_info carrizo_cache_info 141 #define renoir_cache_info carrizo_cache_info 142 /* TODO - check & update Navi10 cache details */ 143 #define navi10_cache_info carrizo_cache_info 144 #define vangogh_cache_info carrizo_cache_info 145 146 static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev, 147 struct crat_subtype_computeunit *cu) 148 { 149 dev->node_props.cpu_cores_count = cu->num_cpu_cores; 150 dev->node_props.cpu_core_id_base = cu->processor_id_low; 151 if (cu->hsa_capability & CRAT_CU_FLAGS_IOMMU_PRESENT) 152 dev->node_props.capability |= HSA_CAP_ATS_PRESENT; 153 154 pr_debug("CU CPU: cores=%d id_base=%d\n", cu->num_cpu_cores, 155 cu->processor_id_low); 156 } 157 158 static void kfd_populated_cu_info_gpu(struct kfd_topology_device *dev, 159 struct crat_subtype_computeunit *cu) 160 { 161 dev->node_props.simd_id_base = cu->processor_id_low; 162 dev->node_props.simd_count = cu->num_simd_cores; 163 dev->node_props.lds_size_in_kb = cu->lds_size_in_kb; 164 dev->node_props.max_waves_per_simd = cu->max_waves_simd; 165 dev->node_props.wave_front_size = cu->wave_front_size; 166 dev->node_props.array_count = cu->array_count; 167 dev->node_props.cu_per_simd_array = cu->num_cu_per_array; 168 dev->node_props.simd_per_cu = cu->num_simd_per_cu; 169 dev->node_props.max_slots_scratch_cu = cu->max_slots_scatch_cu; 170 if (cu->hsa_capability & CRAT_CU_FLAGS_HOT_PLUGGABLE) 171 dev->node_props.capability |= HSA_CAP_HOT_PLUGGABLE; 172 pr_debug("CU GPU: id_base=%d\n", cu->processor_id_low); 173 } 174 175 /* kfd_parse_subtype_cu - parse compute unit subtypes and attach it to correct 176 * topology device present in the device_list 177 */ 178 static int kfd_parse_subtype_cu(struct crat_subtype_computeunit *cu, 179 struct list_head *device_list) 180 { 181 struct kfd_topology_device *dev; 182 183 pr_debug("Found CU entry in CRAT table with proximity_domain=%d caps=%x\n", 184 cu->proximity_domain, cu->hsa_capability); 185 list_for_each_entry(dev, device_list, list) { 186 if (cu->proximity_domain == dev->proximity_domain) { 187 if (cu->flags & CRAT_CU_FLAGS_CPU_PRESENT) 188 kfd_populated_cu_info_cpu(dev, cu); 189 190 if (cu->flags & CRAT_CU_FLAGS_GPU_PRESENT) 191 kfd_populated_cu_info_gpu(dev, cu); 192 break; 193 } 194 } 195 196 return 0; 197 } 198 199 static struct kfd_mem_properties * 200 find_subtype_mem(uint32_t heap_type, uint32_t flags, uint32_t width, 201 struct kfd_topology_device *dev) 202 { 203 struct kfd_mem_properties *props; 204 205 list_for_each_entry(props, &dev->mem_props, list) { 206 if (props->heap_type == heap_type 207 && props->flags == flags 208 && props->width == width) 209 return props; 210 } 211 212 return NULL; 213 } 214 /* kfd_parse_subtype_mem - parse memory subtypes and attach it to correct 215 * topology device present in the device_list 216 */ 217 static int kfd_parse_subtype_mem(struct crat_subtype_memory *mem, 218 struct list_head *device_list) 219 { 220 struct kfd_mem_properties *props; 221 struct kfd_topology_device *dev; 222 uint32_t heap_type; 223 uint64_t size_in_bytes; 224 uint32_t flags = 0; 225 uint32_t width; 226 227 pr_debug("Found memory entry in CRAT table with proximity_domain=%d\n", 228 mem->proximity_domain); 229 list_for_each_entry(dev, device_list, list) { 230 if (mem->proximity_domain == dev->proximity_domain) { 231 /* We're on GPU node */ 232 if (dev->node_props.cpu_cores_count == 0) { 233 /* APU */ 234 if (mem->visibility_type == 0) 235 heap_type = 236 HSA_MEM_HEAP_TYPE_FB_PRIVATE; 237 /* dGPU */ 238 else 239 heap_type = mem->visibility_type; 240 } else 241 heap_type = HSA_MEM_HEAP_TYPE_SYSTEM; 242 243 if (mem->flags & CRAT_MEM_FLAGS_HOT_PLUGGABLE) 244 flags |= HSA_MEM_FLAGS_HOT_PLUGGABLE; 245 if (mem->flags & CRAT_MEM_FLAGS_NON_VOLATILE) 246 flags |= HSA_MEM_FLAGS_NON_VOLATILE; 247 248 size_in_bytes = 249 ((uint64_t)mem->length_high << 32) + 250 mem->length_low; 251 width = mem->width; 252 253 /* Multiple banks of the same type are aggregated into 254 * one. User mode doesn't care about multiple physical 255 * memory segments. It's managed as a single virtual 256 * heap for user mode. 257 */ 258 props = find_subtype_mem(heap_type, flags, width, dev); 259 if (props) { 260 props->size_in_bytes += size_in_bytes; 261 break; 262 } 263 264 props = kfd_alloc_struct(props); 265 if (!props) 266 return -ENOMEM; 267 268 props->heap_type = heap_type; 269 props->flags = flags; 270 props->size_in_bytes = size_in_bytes; 271 props->width = width; 272 273 dev->node_props.mem_banks_count++; 274 list_add_tail(&props->list, &dev->mem_props); 275 276 break; 277 } 278 } 279 280 return 0; 281 } 282 283 /* kfd_parse_subtype_cache - parse cache subtypes and attach it to correct 284 * topology device present in the device_list 285 */ 286 static int kfd_parse_subtype_cache(struct crat_subtype_cache *cache, 287 struct list_head *device_list) 288 { 289 struct kfd_cache_properties *props; 290 struct kfd_topology_device *dev; 291 uint32_t id; 292 uint32_t total_num_of_cu; 293 294 id = cache->processor_id_low; 295 296 pr_debug("Found cache entry in CRAT table with processor_id=%d\n", id); 297 list_for_each_entry(dev, device_list, list) { 298 total_num_of_cu = (dev->node_props.array_count * 299 dev->node_props.cu_per_simd_array); 300 301 /* Cache infomration in CRAT doesn't have proximity_domain 302 * information as it is associated with a CPU core or GPU 303 * Compute Unit. So map the cache using CPU core Id or SIMD 304 * (GPU) ID. 305 * TODO: This works because currently we can safely assume that 306 * Compute Units are parsed before caches are parsed. In 307 * future, remove this dependency 308 */ 309 if ((id >= dev->node_props.cpu_core_id_base && 310 id <= dev->node_props.cpu_core_id_base + 311 dev->node_props.cpu_cores_count) || 312 (id >= dev->node_props.simd_id_base && 313 id < dev->node_props.simd_id_base + 314 total_num_of_cu)) { 315 props = kfd_alloc_struct(props); 316 if (!props) 317 return -ENOMEM; 318 319 props->processor_id_low = id; 320 props->cache_level = cache->cache_level; 321 props->cache_size = cache->cache_size; 322 props->cacheline_size = cache->cache_line_size; 323 props->cachelines_per_tag = cache->lines_per_tag; 324 props->cache_assoc = cache->associativity; 325 props->cache_latency = cache->cache_latency; 326 memcpy(props->sibling_map, cache->sibling_map, 327 sizeof(props->sibling_map)); 328 329 if (cache->flags & CRAT_CACHE_FLAGS_DATA_CACHE) 330 props->cache_type |= HSA_CACHE_TYPE_DATA; 331 if (cache->flags & CRAT_CACHE_FLAGS_INST_CACHE) 332 props->cache_type |= HSA_CACHE_TYPE_INSTRUCTION; 333 if (cache->flags & CRAT_CACHE_FLAGS_CPU_CACHE) 334 props->cache_type |= HSA_CACHE_TYPE_CPU; 335 if (cache->flags & CRAT_CACHE_FLAGS_SIMD_CACHE) 336 props->cache_type |= HSA_CACHE_TYPE_HSACU; 337 338 dev->cache_count++; 339 dev->node_props.caches_count++; 340 list_add_tail(&props->list, &dev->cache_props); 341 342 break; 343 } 344 } 345 346 return 0; 347 } 348 349 /* kfd_parse_subtype_iolink - parse iolink subtypes and attach it to correct 350 * topology device present in the device_list 351 */ 352 static int kfd_parse_subtype_iolink(struct crat_subtype_iolink *iolink, 353 struct list_head *device_list) 354 { 355 struct kfd_iolink_properties *props = NULL, *props2; 356 struct kfd_topology_device *dev, *to_dev; 357 uint32_t id_from; 358 uint32_t id_to; 359 360 id_from = iolink->proximity_domain_from; 361 id_to = iolink->proximity_domain_to; 362 363 pr_debug("Found IO link entry in CRAT table with id_from=%d, id_to %d\n", 364 id_from, id_to); 365 list_for_each_entry(dev, device_list, list) { 366 if (id_from == dev->proximity_domain) { 367 props = kfd_alloc_struct(props); 368 if (!props) 369 return -ENOMEM; 370 371 props->node_from = id_from; 372 props->node_to = id_to; 373 props->ver_maj = iolink->version_major; 374 props->ver_min = iolink->version_minor; 375 props->iolink_type = iolink->io_interface_type; 376 377 if (props->iolink_type == CRAT_IOLINK_TYPE_PCIEXPRESS) 378 props->weight = 20; 379 else if (props->iolink_type == CRAT_IOLINK_TYPE_XGMI) 380 props->weight = 15 * iolink->num_hops_xgmi; 381 else 382 props->weight = node_distance(id_from, id_to); 383 384 props->min_latency = iolink->minimum_latency; 385 props->max_latency = iolink->maximum_latency; 386 props->min_bandwidth = iolink->minimum_bandwidth_mbs; 387 props->max_bandwidth = iolink->maximum_bandwidth_mbs; 388 props->rec_transfer_size = 389 iolink->recommended_transfer_size; 390 391 dev->io_link_count++; 392 dev->node_props.io_links_count++; 393 list_add_tail(&props->list, &dev->io_link_props); 394 break; 395 } 396 } 397 398 /* CPU topology is created before GPUs are detected, so CPU->GPU 399 * links are not built at that time. If a PCIe type is discovered, it 400 * means a GPU is detected and we are adding GPU->CPU to the topology. 401 * At this time, also add the corresponded CPU->GPU link if GPU 402 * is large bar. 403 * For xGMI, we only added the link with one direction in the crat 404 * table, add corresponded reversed direction link now. 405 */ 406 if (props && (iolink->flags & CRAT_IOLINK_FLAGS_BI_DIRECTIONAL)) { 407 to_dev = kfd_topology_device_by_proximity_domain(id_to); 408 if (!to_dev) 409 return -ENODEV; 410 /* same everything but the other direction */ 411 props2 = kmemdup(props, sizeof(*props2), GFP_KERNEL); 412 props2->node_from = id_to; 413 props2->node_to = id_from; 414 props2->kobj = NULL; 415 to_dev->io_link_count++; 416 to_dev->node_props.io_links_count++; 417 list_add_tail(&props2->list, &to_dev->io_link_props); 418 } 419 420 return 0; 421 } 422 423 /* kfd_parse_subtype - parse subtypes and attach it to correct topology device 424 * present in the device_list 425 * @sub_type_hdr - subtype section of crat_image 426 * @device_list - list of topology devices present in this crat_image 427 */ 428 static int kfd_parse_subtype(struct crat_subtype_generic *sub_type_hdr, 429 struct list_head *device_list) 430 { 431 struct crat_subtype_computeunit *cu; 432 struct crat_subtype_memory *mem; 433 struct crat_subtype_cache *cache; 434 struct crat_subtype_iolink *iolink; 435 int ret = 0; 436 437 switch (sub_type_hdr->type) { 438 case CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY: 439 cu = (struct crat_subtype_computeunit *)sub_type_hdr; 440 ret = kfd_parse_subtype_cu(cu, device_list); 441 break; 442 case CRAT_SUBTYPE_MEMORY_AFFINITY: 443 mem = (struct crat_subtype_memory *)sub_type_hdr; 444 ret = kfd_parse_subtype_mem(mem, device_list); 445 break; 446 case CRAT_SUBTYPE_CACHE_AFFINITY: 447 cache = (struct crat_subtype_cache *)sub_type_hdr; 448 ret = kfd_parse_subtype_cache(cache, device_list); 449 break; 450 case CRAT_SUBTYPE_TLB_AFFINITY: 451 /* 452 * For now, nothing to do here 453 */ 454 pr_debug("Found TLB entry in CRAT table (not processing)\n"); 455 break; 456 case CRAT_SUBTYPE_CCOMPUTE_AFFINITY: 457 /* 458 * For now, nothing to do here 459 */ 460 pr_debug("Found CCOMPUTE entry in CRAT table (not processing)\n"); 461 break; 462 case CRAT_SUBTYPE_IOLINK_AFFINITY: 463 iolink = (struct crat_subtype_iolink *)sub_type_hdr; 464 ret = kfd_parse_subtype_iolink(iolink, device_list); 465 break; 466 default: 467 pr_warn("Unknown subtype %d in CRAT\n", 468 sub_type_hdr->type); 469 } 470 471 return ret; 472 } 473 474 /* kfd_parse_crat_table - parse CRAT table. For each node present in CRAT 475 * create a kfd_topology_device and add in to device_list. Also parse 476 * CRAT subtypes and attach it to appropriate kfd_topology_device 477 * @crat_image - input image containing CRAT 478 * @device_list - [OUT] list of kfd_topology_device generated after 479 * parsing crat_image 480 * @proximity_domain - Proximity domain of the first device in the table 481 * 482 * Return - 0 if successful else -ve value 483 */ 484 int kfd_parse_crat_table(void *crat_image, struct list_head *device_list, 485 uint32_t proximity_domain) 486 { 487 struct kfd_topology_device *top_dev = NULL; 488 struct crat_subtype_generic *sub_type_hdr; 489 uint16_t node_id; 490 int ret = 0; 491 struct crat_header *crat_table = (struct crat_header *)crat_image; 492 uint16_t num_nodes; 493 uint32_t image_len; 494 495 if (!crat_image) 496 return -EINVAL; 497 498 if (!list_empty(device_list)) { 499 pr_warn("Error device list should be empty\n"); 500 return -EINVAL; 501 } 502 503 num_nodes = crat_table->num_domains; 504 image_len = crat_table->length; 505 506 pr_debug("Parsing CRAT table with %d nodes\n", num_nodes); 507 508 for (node_id = 0; node_id < num_nodes; node_id++) { 509 top_dev = kfd_create_topology_device(device_list); 510 if (!top_dev) 511 break; 512 top_dev->proximity_domain = proximity_domain++; 513 } 514 515 if (!top_dev) { 516 ret = -ENOMEM; 517 goto err; 518 } 519 520 memcpy(top_dev->oem_id, crat_table->oem_id, CRAT_OEMID_LENGTH); 521 memcpy(top_dev->oem_table_id, crat_table->oem_table_id, 522 CRAT_OEMTABLEID_LENGTH); 523 top_dev->oem_revision = crat_table->oem_revision; 524 525 sub_type_hdr = (struct crat_subtype_generic *)(crat_table+1); 526 while ((char *)sub_type_hdr + sizeof(struct crat_subtype_generic) < 527 ((char *)crat_image) + image_len) { 528 if (sub_type_hdr->flags & CRAT_SUBTYPE_FLAGS_ENABLED) { 529 ret = kfd_parse_subtype(sub_type_hdr, device_list); 530 if (ret) 531 break; 532 } 533 534 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 535 sub_type_hdr->length); 536 } 537 538 err: 539 if (ret) 540 kfd_release_topology_device_list(device_list); 541 542 return ret; 543 } 544 545 /* Helper function. See kfd_fill_gpu_cache_info for parameter description */ 546 static int fill_in_pcache(struct crat_subtype_cache *pcache, 547 struct kfd_gpu_cache_info *pcache_info, 548 struct kfd_cu_info *cu_info, 549 int mem_available, 550 int cu_bitmask, 551 int cache_type, unsigned int cu_processor_id, 552 int cu_block) 553 { 554 unsigned int cu_sibling_map_mask; 555 int first_active_cu; 556 557 /* First check if enough memory is available */ 558 if (sizeof(struct crat_subtype_cache) > mem_available) 559 return -ENOMEM; 560 561 cu_sibling_map_mask = cu_bitmask; 562 cu_sibling_map_mask >>= cu_block; 563 cu_sibling_map_mask &= 564 ((1 << pcache_info[cache_type].num_cu_shared) - 1); 565 first_active_cu = ffs(cu_sibling_map_mask); 566 567 /* CU could be inactive. In case of shared cache find the first active 568 * CU. and incase of non-shared cache check if the CU is inactive. If 569 * inactive active skip it 570 */ 571 if (first_active_cu) { 572 memset(pcache, 0, sizeof(struct crat_subtype_cache)); 573 pcache->type = CRAT_SUBTYPE_CACHE_AFFINITY; 574 pcache->length = sizeof(struct crat_subtype_cache); 575 pcache->flags = pcache_info[cache_type].flags; 576 pcache->processor_id_low = cu_processor_id 577 + (first_active_cu - 1); 578 pcache->cache_level = pcache_info[cache_type].cache_level; 579 pcache->cache_size = pcache_info[cache_type].cache_size; 580 581 /* Sibling map is w.r.t processor_id_low, so shift out 582 * inactive CU 583 */ 584 cu_sibling_map_mask = 585 cu_sibling_map_mask >> (first_active_cu - 1); 586 587 pcache->sibling_map[0] = (uint8_t)(cu_sibling_map_mask & 0xFF); 588 pcache->sibling_map[1] = 589 (uint8_t)((cu_sibling_map_mask >> 8) & 0xFF); 590 pcache->sibling_map[2] = 591 (uint8_t)((cu_sibling_map_mask >> 16) & 0xFF); 592 pcache->sibling_map[3] = 593 (uint8_t)((cu_sibling_map_mask >> 24) & 0xFF); 594 return 0; 595 } 596 return 1; 597 } 598 599 /* kfd_fill_gpu_cache_info - Fill GPU cache info using kfd_gpu_cache_info 600 * tables 601 * 602 * @kdev - [IN] GPU device 603 * @gpu_processor_id - [IN] GPU processor ID to which these caches 604 * associate 605 * @available_size - [IN] Amount of memory available in pcache 606 * @cu_info - [IN] Compute Unit info obtained from KGD 607 * @pcache - [OUT] memory into which cache data is to be filled in. 608 * @size_filled - [OUT] amount of data used up in pcache. 609 * @num_of_entries - [OUT] number of caches added 610 */ 611 static int kfd_fill_gpu_cache_info(struct kfd_dev *kdev, 612 int gpu_processor_id, 613 int available_size, 614 struct kfd_cu_info *cu_info, 615 struct crat_subtype_cache *pcache, 616 int *size_filled, 617 int *num_of_entries) 618 { 619 struct kfd_gpu_cache_info *pcache_info; 620 int num_of_cache_types = 0; 621 int i, j, k; 622 int ct = 0; 623 int mem_available = available_size; 624 unsigned int cu_processor_id; 625 int ret; 626 627 switch (kdev->device_info->asic_family) { 628 case CHIP_KAVERI: 629 pcache_info = kaveri_cache_info; 630 num_of_cache_types = ARRAY_SIZE(kaveri_cache_info); 631 break; 632 case CHIP_HAWAII: 633 pcache_info = hawaii_cache_info; 634 num_of_cache_types = ARRAY_SIZE(hawaii_cache_info); 635 break; 636 case CHIP_CARRIZO: 637 pcache_info = carrizo_cache_info; 638 num_of_cache_types = ARRAY_SIZE(carrizo_cache_info); 639 break; 640 case CHIP_TONGA: 641 pcache_info = tonga_cache_info; 642 num_of_cache_types = ARRAY_SIZE(tonga_cache_info); 643 break; 644 case CHIP_FIJI: 645 pcache_info = fiji_cache_info; 646 num_of_cache_types = ARRAY_SIZE(fiji_cache_info); 647 break; 648 case CHIP_POLARIS10: 649 pcache_info = polaris10_cache_info; 650 num_of_cache_types = ARRAY_SIZE(polaris10_cache_info); 651 break; 652 case CHIP_POLARIS11: 653 pcache_info = polaris11_cache_info; 654 num_of_cache_types = ARRAY_SIZE(polaris11_cache_info); 655 break; 656 case CHIP_POLARIS12: 657 pcache_info = polaris12_cache_info; 658 num_of_cache_types = ARRAY_SIZE(polaris12_cache_info); 659 break; 660 case CHIP_VEGAM: 661 pcache_info = vegam_cache_info; 662 num_of_cache_types = ARRAY_SIZE(vegam_cache_info); 663 break; 664 case CHIP_VEGA10: 665 case CHIP_VEGA12: 666 case CHIP_VEGA20: 667 case CHIP_ARCTURUS: 668 pcache_info = vega10_cache_info; 669 num_of_cache_types = ARRAY_SIZE(vega10_cache_info); 670 break; 671 case CHIP_RAVEN: 672 pcache_info = raven_cache_info; 673 num_of_cache_types = ARRAY_SIZE(raven_cache_info); 674 break; 675 case CHIP_RENOIR: 676 pcache_info = renoir_cache_info; 677 num_of_cache_types = ARRAY_SIZE(renoir_cache_info); 678 break; 679 case CHIP_NAVI10: 680 case CHIP_NAVI12: 681 case CHIP_NAVI14: 682 case CHIP_SIENNA_CICHLID: 683 case CHIP_NAVY_FLOUNDER: 684 case CHIP_DIMGREY_CAVEFISH: 685 pcache_info = navi10_cache_info; 686 num_of_cache_types = ARRAY_SIZE(navi10_cache_info); 687 break; 688 case CHIP_VANGOGH: 689 pcache_info = vangogh_cache_info; 690 num_of_cache_types = ARRAY_SIZE(vangogh_cache_info); 691 break; 692 default: 693 return -EINVAL; 694 } 695 696 *size_filled = 0; 697 *num_of_entries = 0; 698 699 /* For each type of cache listed in the kfd_gpu_cache_info table, 700 * go through all available Compute Units. 701 * The [i,j,k] loop will 702 * if kfd_gpu_cache_info.num_cu_shared = 1 703 * will parse through all available CU 704 * If (kfd_gpu_cache_info.num_cu_shared != 1) 705 * then it will consider only one CU from 706 * the shared unit 707 */ 708 709 for (ct = 0; ct < num_of_cache_types; ct++) { 710 cu_processor_id = gpu_processor_id; 711 for (i = 0; i < cu_info->num_shader_engines; i++) { 712 for (j = 0; j < cu_info->num_shader_arrays_per_engine; 713 j++) { 714 for (k = 0; k < cu_info->num_cu_per_sh; 715 k += pcache_info[ct].num_cu_shared) { 716 717 ret = fill_in_pcache(pcache, 718 pcache_info, 719 cu_info, 720 mem_available, 721 cu_info->cu_bitmap[i % 4][j + i / 4], 722 ct, 723 cu_processor_id, 724 k); 725 726 if (ret < 0) 727 break; 728 729 if (!ret) { 730 pcache++; 731 (*num_of_entries)++; 732 mem_available -= 733 sizeof(*pcache); 734 (*size_filled) += 735 sizeof(*pcache); 736 } 737 738 /* Move to next CU block */ 739 cu_processor_id += 740 pcache_info[ct].num_cu_shared; 741 } 742 } 743 } 744 } 745 746 pr_debug("Added [%d] GPU cache entries\n", *num_of_entries); 747 748 return 0; 749 } 750 751 static bool kfd_ignore_crat(void) 752 { 753 bool ret; 754 755 if (ignore_crat) 756 return true; 757 758 #ifndef KFD_SUPPORT_IOMMU_V2 759 ret = true; 760 #else 761 ret = false; 762 #endif 763 764 return ret; 765 } 766 767 /* 768 * kfd_create_crat_image_acpi - Allocates memory for CRAT image and 769 * copies CRAT from ACPI (if available). 770 * NOTE: Call kfd_destroy_crat_image to free CRAT image memory 771 * 772 * @crat_image: CRAT read from ACPI. If no CRAT in ACPI then 773 * crat_image will be NULL 774 * @size: [OUT] size of crat_image 775 * 776 * Return 0 if successful else return error code 777 */ 778 int kfd_create_crat_image_acpi(void **crat_image, size_t *size) 779 { 780 struct acpi_table_header *crat_table; 781 acpi_status status; 782 void *pcrat_image; 783 int rc = 0; 784 785 if (!crat_image) 786 return -EINVAL; 787 788 *crat_image = NULL; 789 790 if (kfd_ignore_crat()) { 791 pr_info("CRAT table disabled by module option\n"); 792 return -ENODATA; 793 } 794 795 /* Fetch the CRAT table from ACPI */ 796 status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table); 797 if (status == AE_NOT_FOUND) { 798 pr_warn("CRAT table not found\n"); 799 return -ENODATA; 800 } else if (ACPI_FAILURE(status)) { 801 const char *err = acpi_format_exception(status); 802 803 pr_err("CRAT table error: %s\n", err); 804 return -EINVAL; 805 } 806 807 pcrat_image = kvmalloc(crat_table->length, GFP_KERNEL); 808 if (!pcrat_image) { 809 rc = -ENOMEM; 810 goto out; 811 } 812 813 memcpy(pcrat_image, crat_table, crat_table->length); 814 *crat_image = pcrat_image; 815 *size = crat_table->length; 816 out: 817 acpi_put_table(crat_table); 818 return rc; 819 } 820 821 /* Memory required to create Virtual CRAT. 822 * Since there is no easy way to predict the amount of memory required, the 823 * following amount is allocated for GPU Virtual CRAT. This is 824 * expected to cover all known conditions. But to be safe additional check 825 * is put in the code to ensure we don't overwrite. 826 */ 827 #define VCRAT_SIZE_FOR_GPU (4 * PAGE_SIZE) 828 829 /* kfd_fill_cu_for_cpu - Fill in Compute info for the given CPU NUMA node 830 * 831 * @numa_node_id: CPU NUMA node id 832 * @avail_size: Available size in the memory 833 * @sub_type_hdr: Memory into which compute info will be filled in 834 * 835 * Return 0 if successful else return -ve value 836 */ 837 static int kfd_fill_cu_for_cpu(int numa_node_id, int *avail_size, 838 int proximity_domain, 839 struct crat_subtype_computeunit *sub_type_hdr) 840 { 841 const struct cpumask *cpumask; 842 843 *avail_size -= sizeof(struct crat_subtype_computeunit); 844 if (*avail_size < 0) 845 return -ENOMEM; 846 847 memset(sub_type_hdr, 0, sizeof(struct crat_subtype_computeunit)); 848 849 /* Fill in subtype header data */ 850 sub_type_hdr->type = CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY; 851 sub_type_hdr->length = sizeof(struct crat_subtype_computeunit); 852 sub_type_hdr->flags = CRAT_SUBTYPE_FLAGS_ENABLED; 853 854 cpumask = cpumask_of_node(numa_node_id); 855 856 /* Fill in CU data */ 857 sub_type_hdr->flags |= CRAT_CU_FLAGS_CPU_PRESENT; 858 sub_type_hdr->proximity_domain = proximity_domain; 859 sub_type_hdr->processor_id_low = kfd_numa_node_to_apic_id(numa_node_id); 860 if (sub_type_hdr->processor_id_low == -1) 861 return -EINVAL; 862 863 sub_type_hdr->num_cpu_cores = cpumask_weight(cpumask); 864 865 return 0; 866 } 867 868 /* kfd_fill_mem_info_for_cpu - Fill in Memory info for the given CPU NUMA node 869 * 870 * @numa_node_id: CPU NUMA node id 871 * @avail_size: Available size in the memory 872 * @sub_type_hdr: Memory into which compute info will be filled in 873 * 874 * Return 0 if successful else return -ve value 875 */ 876 static int kfd_fill_mem_info_for_cpu(int numa_node_id, int *avail_size, 877 int proximity_domain, 878 struct crat_subtype_memory *sub_type_hdr) 879 { 880 uint64_t mem_in_bytes = 0; 881 pg_data_t *pgdat; 882 int zone_type; 883 884 *avail_size -= sizeof(struct crat_subtype_memory); 885 if (*avail_size < 0) 886 return -ENOMEM; 887 888 memset(sub_type_hdr, 0, sizeof(struct crat_subtype_memory)); 889 890 /* Fill in subtype header data */ 891 sub_type_hdr->type = CRAT_SUBTYPE_MEMORY_AFFINITY; 892 sub_type_hdr->length = sizeof(struct crat_subtype_memory); 893 sub_type_hdr->flags = CRAT_SUBTYPE_FLAGS_ENABLED; 894 895 /* Fill in Memory Subunit data */ 896 897 /* Unlike si_meminfo, si_meminfo_node is not exported. So 898 * the following lines are duplicated from si_meminfo_node 899 * function 900 */ 901 pgdat = NODE_DATA(numa_node_id); 902 for (zone_type = 0; zone_type < MAX_NR_ZONES; zone_type++) 903 mem_in_bytes += zone_managed_pages(&pgdat->node_zones[zone_type]); 904 mem_in_bytes <<= PAGE_SHIFT; 905 906 sub_type_hdr->length_low = lower_32_bits(mem_in_bytes); 907 sub_type_hdr->length_high = upper_32_bits(mem_in_bytes); 908 sub_type_hdr->proximity_domain = proximity_domain; 909 910 return 0; 911 } 912 913 #ifdef CONFIG_X86_64 914 static int kfd_fill_iolink_info_for_cpu(int numa_node_id, int *avail_size, 915 uint32_t *num_entries, 916 struct crat_subtype_iolink *sub_type_hdr) 917 { 918 int nid; 919 struct cpuinfo_x86 *c = &cpu_data(0); 920 uint8_t link_type; 921 922 if (c->x86_vendor == X86_VENDOR_AMD) 923 link_type = CRAT_IOLINK_TYPE_HYPERTRANSPORT; 924 else 925 link_type = CRAT_IOLINK_TYPE_QPI_1_1; 926 927 *num_entries = 0; 928 929 /* Create IO links from this node to other CPU nodes */ 930 for_each_online_node(nid) { 931 if (nid == numa_node_id) /* node itself */ 932 continue; 933 934 *avail_size -= sizeof(struct crat_subtype_iolink); 935 if (*avail_size < 0) 936 return -ENOMEM; 937 938 memset(sub_type_hdr, 0, sizeof(struct crat_subtype_iolink)); 939 940 /* Fill in subtype header data */ 941 sub_type_hdr->type = CRAT_SUBTYPE_IOLINK_AFFINITY; 942 sub_type_hdr->length = sizeof(struct crat_subtype_iolink); 943 sub_type_hdr->flags = CRAT_SUBTYPE_FLAGS_ENABLED; 944 945 /* Fill in IO link data */ 946 sub_type_hdr->proximity_domain_from = numa_node_id; 947 sub_type_hdr->proximity_domain_to = nid; 948 sub_type_hdr->io_interface_type = link_type; 949 950 (*num_entries)++; 951 sub_type_hdr++; 952 } 953 954 return 0; 955 } 956 #endif 957 958 /* kfd_create_vcrat_image_cpu - Create Virtual CRAT for CPU 959 * 960 * @pcrat_image: Fill in VCRAT for CPU 961 * @size: [IN] allocated size of crat_image. 962 * [OUT] actual size of data filled in crat_image 963 */ 964 static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size) 965 { 966 struct crat_header *crat_table = (struct crat_header *)pcrat_image; 967 struct acpi_table_header *acpi_table; 968 acpi_status status; 969 struct crat_subtype_generic *sub_type_hdr; 970 int avail_size = *size; 971 int numa_node_id; 972 #ifdef CONFIG_X86_64 973 uint32_t entries = 0; 974 #endif 975 int ret = 0; 976 977 if (!pcrat_image) 978 return -EINVAL; 979 980 /* Fill in CRAT Header. 981 * Modify length and total_entries as subunits are added. 982 */ 983 avail_size -= sizeof(struct crat_header); 984 if (avail_size < 0) 985 return -ENOMEM; 986 987 memset(crat_table, 0, sizeof(struct crat_header)); 988 memcpy(&crat_table->signature, CRAT_SIGNATURE, 989 sizeof(crat_table->signature)); 990 crat_table->length = sizeof(struct crat_header); 991 992 status = acpi_get_table("DSDT", 0, &acpi_table); 993 if (status != AE_OK) 994 pr_warn("DSDT table not found for OEM information\n"); 995 else { 996 crat_table->oem_revision = acpi_table->revision; 997 memcpy(crat_table->oem_id, acpi_table->oem_id, 998 CRAT_OEMID_LENGTH); 999 memcpy(crat_table->oem_table_id, acpi_table->oem_table_id, 1000 CRAT_OEMTABLEID_LENGTH); 1001 acpi_put_table(acpi_table); 1002 } 1003 crat_table->total_entries = 0; 1004 crat_table->num_domains = 0; 1005 1006 sub_type_hdr = (struct crat_subtype_generic *)(crat_table+1); 1007 1008 for_each_online_node(numa_node_id) { 1009 if (kfd_numa_node_to_apic_id(numa_node_id) == -1) 1010 continue; 1011 1012 /* Fill in Subtype: Compute Unit */ 1013 ret = kfd_fill_cu_for_cpu(numa_node_id, &avail_size, 1014 crat_table->num_domains, 1015 (struct crat_subtype_computeunit *)sub_type_hdr); 1016 if (ret < 0) 1017 return ret; 1018 crat_table->length += sub_type_hdr->length; 1019 crat_table->total_entries++; 1020 1021 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1022 sub_type_hdr->length); 1023 1024 /* Fill in Subtype: Memory */ 1025 ret = kfd_fill_mem_info_for_cpu(numa_node_id, &avail_size, 1026 crat_table->num_domains, 1027 (struct crat_subtype_memory *)sub_type_hdr); 1028 if (ret < 0) 1029 return ret; 1030 crat_table->length += sub_type_hdr->length; 1031 crat_table->total_entries++; 1032 1033 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1034 sub_type_hdr->length); 1035 1036 /* Fill in Subtype: IO Link */ 1037 #ifdef CONFIG_X86_64 1038 ret = kfd_fill_iolink_info_for_cpu(numa_node_id, &avail_size, 1039 &entries, 1040 (struct crat_subtype_iolink *)sub_type_hdr); 1041 if (ret < 0) 1042 return ret; 1043 1044 if (entries) { 1045 crat_table->length += (sub_type_hdr->length * entries); 1046 crat_table->total_entries += entries; 1047 1048 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1049 sub_type_hdr->length * entries); 1050 } 1051 #else 1052 pr_info("IO link not available for non x86 platforms\n"); 1053 #endif 1054 1055 crat_table->num_domains++; 1056 } 1057 1058 /* TODO: Add cache Subtype for CPU. 1059 * Currently, CPU cache information is available in function 1060 * detect_cache_attributes(cpu) defined in the file 1061 * ./arch/x86/kernel/cpu/intel_cacheinfo.c. This function is not 1062 * exported and to get the same information the code needs to be 1063 * duplicated. 1064 */ 1065 1066 *size = crat_table->length; 1067 pr_info("Virtual CRAT table created for CPU\n"); 1068 1069 return 0; 1070 } 1071 1072 static int kfd_fill_gpu_memory_affinity(int *avail_size, 1073 struct kfd_dev *kdev, uint8_t type, uint64_t size, 1074 struct crat_subtype_memory *sub_type_hdr, 1075 uint32_t proximity_domain, 1076 const struct kfd_local_mem_info *local_mem_info) 1077 { 1078 *avail_size -= sizeof(struct crat_subtype_memory); 1079 if (*avail_size < 0) 1080 return -ENOMEM; 1081 1082 memset((void *)sub_type_hdr, 0, sizeof(struct crat_subtype_memory)); 1083 sub_type_hdr->type = CRAT_SUBTYPE_MEMORY_AFFINITY; 1084 sub_type_hdr->length = sizeof(struct crat_subtype_memory); 1085 sub_type_hdr->flags |= CRAT_SUBTYPE_FLAGS_ENABLED; 1086 1087 sub_type_hdr->proximity_domain = proximity_domain; 1088 1089 pr_debug("Fill gpu memory affinity - type 0x%x size 0x%llx\n", 1090 type, size); 1091 1092 sub_type_hdr->length_low = lower_32_bits(size); 1093 sub_type_hdr->length_high = upper_32_bits(size); 1094 1095 sub_type_hdr->width = local_mem_info->vram_width; 1096 sub_type_hdr->visibility_type = type; 1097 1098 return 0; 1099 } 1100 1101 /* kfd_fill_gpu_direct_io_link - Fill in direct io link from GPU 1102 * to its NUMA node 1103 * @avail_size: Available size in the memory 1104 * @kdev - [IN] GPU device 1105 * @sub_type_hdr: Memory into which io link info will be filled in 1106 * @proximity_domain - proximity domain of the GPU node 1107 * 1108 * Return 0 if successful else return -ve value 1109 */ 1110 static int kfd_fill_gpu_direct_io_link_to_cpu(int *avail_size, 1111 struct kfd_dev *kdev, 1112 struct crat_subtype_iolink *sub_type_hdr, 1113 uint32_t proximity_domain) 1114 { 1115 *avail_size -= sizeof(struct crat_subtype_iolink); 1116 if (*avail_size < 0) 1117 return -ENOMEM; 1118 1119 memset((void *)sub_type_hdr, 0, sizeof(struct crat_subtype_iolink)); 1120 1121 /* Fill in subtype header data */ 1122 sub_type_hdr->type = CRAT_SUBTYPE_IOLINK_AFFINITY; 1123 sub_type_hdr->length = sizeof(struct crat_subtype_iolink); 1124 sub_type_hdr->flags |= CRAT_SUBTYPE_FLAGS_ENABLED; 1125 if (kfd_dev_is_large_bar(kdev)) 1126 sub_type_hdr->flags |= CRAT_IOLINK_FLAGS_BI_DIRECTIONAL; 1127 1128 /* Fill in IOLINK subtype. 1129 * TODO: Fill-in other fields of iolink subtype 1130 */ 1131 sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_PCIEXPRESS; 1132 sub_type_hdr->proximity_domain_from = proximity_domain; 1133 #ifdef CONFIG_NUMA 1134 if (kdev->pdev->dev.numa_node == NUMA_NO_NODE) 1135 sub_type_hdr->proximity_domain_to = 0; 1136 else 1137 sub_type_hdr->proximity_domain_to = kdev->pdev->dev.numa_node; 1138 #else 1139 sub_type_hdr->proximity_domain_to = 0; 1140 #endif 1141 return 0; 1142 } 1143 1144 static int kfd_fill_gpu_xgmi_link_to_gpu(int *avail_size, 1145 struct kfd_dev *kdev, 1146 struct kfd_dev *peer_kdev, 1147 struct crat_subtype_iolink *sub_type_hdr, 1148 uint32_t proximity_domain_from, 1149 uint32_t proximity_domain_to) 1150 { 1151 *avail_size -= sizeof(struct crat_subtype_iolink); 1152 if (*avail_size < 0) 1153 return -ENOMEM; 1154 1155 memset((void *)sub_type_hdr, 0, sizeof(struct crat_subtype_iolink)); 1156 1157 sub_type_hdr->type = CRAT_SUBTYPE_IOLINK_AFFINITY; 1158 sub_type_hdr->length = sizeof(struct crat_subtype_iolink); 1159 sub_type_hdr->flags |= CRAT_SUBTYPE_FLAGS_ENABLED | 1160 CRAT_IOLINK_FLAGS_BI_DIRECTIONAL; 1161 1162 sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_XGMI; 1163 sub_type_hdr->proximity_domain_from = proximity_domain_from; 1164 sub_type_hdr->proximity_domain_to = proximity_domain_to; 1165 sub_type_hdr->num_hops_xgmi = 1166 amdgpu_amdkfd_get_xgmi_hops_count(kdev->kgd, peer_kdev->kgd); 1167 return 0; 1168 } 1169 1170 /* kfd_create_vcrat_image_gpu - Create Virtual CRAT for CPU 1171 * 1172 * @pcrat_image: Fill in VCRAT for GPU 1173 * @size: [IN] allocated size of crat_image. 1174 * [OUT] actual size of data filled in crat_image 1175 */ 1176 static int kfd_create_vcrat_image_gpu(void *pcrat_image, 1177 size_t *size, struct kfd_dev *kdev, 1178 uint32_t proximity_domain) 1179 { 1180 struct crat_header *crat_table = (struct crat_header *)pcrat_image; 1181 struct crat_subtype_generic *sub_type_hdr; 1182 struct kfd_local_mem_info local_mem_info; 1183 struct kfd_topology_device *peer_dev; 1184 struct crat_subtype_computeunit *cu; 1185 struct kfd_cu_info cu_info; 1186 int avail_size = *size; 1187 uint32_t total_num_of_cu; 1188 int num_of_cache_entries = 0; 1189 int cache_mem_filled = 0; 1190 uint32_t nid = 0; 1191 int ret = 0; 1192 1193 if (!pcrat_image || avail_size < VCRAT_SIZE_FOR_GPU) 1194 return -EINVAL; 1195 1196 /* Fill the CRAT Header. 1197 * Modify length and total_entries as subunits are added. 1198 */ 1199 avail_size -= sizeof(struct crat_header); 1200 if (avail_size < 0) 1201 return -ENOMEM; 1202 1203 memset(crat_table, 0, sizeof(struct crat_header)); 1204 1205 memcpy(&crat_table->signature, CRAT_SIGNATURE, 1206 sizeof(crat_table->signature)); 1207 /* Change length as we add more subtypes*/ 1208 crat_table->length = sizeof(struct crat_header); 1209 crat_table->num_domains = 1; 1210 crat_table->total_entries = 0; 1211 1212 /* Fill in Subtype: Compute Unit 1213 * First fill in the sub type header and then sub type data 1214 */ 1215 avail_size -= sizeof(struct crat_subtype_computeunit); 1216 if (avail_size < 0) 1217 return -ENOMEM; 1218 1219 sub_type_hdr = (struct crat_subtype_generic *)(crat_table + 1); 1220 memset(sub_type_hdr, 0, sizeof(struct crat_subtype_computeunit)); 1221 1222 sub_type_hdr->type = CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY; 1223 sub_type_hdr->length = sizeof(struct crat_subtype_computeunit); 1224 sub_type_hdr->flags = CRAT_SUBTYPE_FLAGS_ENABLED; 1225 1226 /* Fill CU subtype data */ 1227 cu = (struct crat_subtype_computeunit *)sub_type_hdr; 1228 cu->flags |= CRAT_CU_FLAGS_GPU_PRESENT; 1229 cu->proximity_domain = proximity_domain; 1230 1231 amdgpu_amdkfd_get_cu_info(kdev->kgd, &cu_info); 1232 cu->num_simd_per_cu = cu_info.simd_per_cu; 1233 cu->num_simd_cores = cu_info.simd_per_cu * cu_info.cu_active_number; 1234 cu->max_waves_simd = cu_info.max_waves_per_simd; 1235 1236 cu->wave_front_size = cu_info.wave_front_size; 1237 cu->array_count = cu_info.num_shader_arrays_per_engine * 1238 cu_info.num_shader_engines; 1239 total_num_of_cu = (cu->array_count * cu_info.num_cu_per_sh); 1240 cu->processor_id_low = get_and_inc_gpu_processor_id(total_num_of_cu); 1241 cu->num_cu_per_array = cu_info.num_cu_per_sh; 1242 cu->max_slots_scatch_cu = cu_info.max_scratch_slots_per_cu; 1243 cu->num_banks = cu_info.num_shader_engines; 1244 cu->lds_size_in_kb = cu_info.lds_size; 1245 1246 cu->hsa_capability = 0; 1247 1248 /* Check if this node supports IOMMU. During parsing this flag will 1249 * translate to HSA_CAP_ATS_PRESENT 1250 */ 1251 if (!kfd_iommu_check_device(kdev)) 1252 cu->hsa_capability |= CRAT_CU_FLAGS_IOMMU_PRESENT; 1253 1254 crat_table->length += sub_type_hdr->length; 1255 crat_table->total_entries++; 1256 1257 /* Fill in Subtype: Memory. Only on systems with large BAR (no 1258 * private FB), report memory as public. On other systems 1259 * report the total FB size (public+private) as a single 1260 * private heap. 1261 */ 1262 amdgpu_amdkfd_get_local_mem_info(kdev->kgd, &local_mem_info); 1263 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1264 sub_type_hdr->length); 1265 1266 if (debug_largebar) 1267 local_mem_info.local_mem_size_private = 0; 1268 1269 if (local_mem_info.local_mem_size_private == 0) 1270 ret = kfd_fill_gpu_memory_affinity(&avail_size, 1271 kdev, HSA_MEM_HEAP_TYPE_FB_PUBLIC, 1272 local_mem_info.local_mem_size_public, 1273 (struct crat_subtype_memory *)sub_type_hdr, 1274 proximity_domain, 1275 &local_mem_info); 1276 else 1277 ret = kfd_fill_gpu_memory_affinity(&avail_size, 1278 kdev, HSA_MEM_HEAP_TYPE_FB_PRIVATE, 1279 local_mem_info.local_mem_size_public + 1280 local_mem_info.local_mem_size_private, 1281 (struct crat_subtype_memory *)sub_type_hdr, 1282 proximity_domain, 1283 &local_mem_info); 1284 if (ret < 0) 1285 return ret; 1286 1287 crat_table->length += sizeof(struct crat_subtype_memory); 1288 crat_table->total_entries++; 1289 1290 /* TODO: Fill in cache information. This information is NOT readily 1291 * available in KGD 1292 */ 1293 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1294 sub_type_hdr->length); 1295 ret = kfd_fill_gpu_cache_info(kdev, cu->processor_id_low, 1296 avail_size, 1297 &cu_info, 1298 (struct crat_subtype_cache *)sub_type_hdr, 1299 &cache_mem_filled, 1300 &num_of_cache_entries); 1301 1302 if (ret < 0) 1303 return ret; 1304 1305 crat_table->length += cache_mem_filled; 1306 crat_table->total_entries += num_of_cache_entries; 1307 avail_size -= cache_mem_filled; 1308 1309 /* Fill in Subtype: IO_LINKS 1310 * Only direct links are added here which is Link from GPU to 1311 * to its NUMA node. Indirect links are added by userspace. 1312 */ 1313 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1314 cache_mem_filled); 1315 ret = kfd_fill_gpu_direct_io_link_to_cpu(&avail_size, kdev, 1316 (struct crat_subtype_iolink *)sub_type_hdr, proximity_domain); 1317 1318 if (ret < 0) 1319 return ret; 1320 1321 crat_table->length += sub_type_hdr->length; 1322 crat_table->total_entries++; 1323 1324 1325 /* Fill in Subtype: IO_LINKS 1326 * Direct links from GPU to other GPUs through xGMI. 1327 * We will loop GPUs that already be processed (with lower value 1328 * of proximity_domain), add the link for the GPUs with same 1329 * hive id (from this GPU to other GPU) . The reversed iolink 1330 * (from other GPU to this GPU) will be added 1331 * in kfd_parse_subtype_iolink. 1332 */ 1333 if (kdev->hive_id) { 1334 for (nid = 0; nid < proximity_domain; ++nid) { 1335 peer_dev = kfd_topology_device_by_proximity_domain(nid); 1336 if (!peer_dev->gpu) 1337 continue; 1338 if (peer_dev->gpu->hive_id != kdev->hive_id) 1339 continue; 1340 sub_type_hdr = (typeof(sub_type_hdr))( 1341 (char *)sub_type_hdr + 1342 sizeof(struct crat_subtype_iolink)); 1343 ret = kfd_fill_gpu_xgmi_link_to_gpu( 1344 &avail_size, kdev, peer_dev->gpu, 1345 (struct crat_subtype_iolink *)sub_type_hdr, 1346 proximity_domain, nid); 1347 if (ret < 0) 1348 return ret; 1349 crat_table->length += sub_type_hdr->length; 1350 crat_table->total_entries++; 1351 } 1352 } 1353 *size = crat_table->length; 1354 pr_info("Virtual CRAT table created for GPU\n"); 1355 1356 return ret; 1357 } 1358 1359 /* kfd_create_crat_image_virtual - Allocates memory for CRAT image and 1360 * creates a Virtual CRAT (VCRAT) image 1361 * 1362 * NOTE: Call kfd_destroy_crat_image to free CRAT image memory 1363 * 1364 * @crat_image: VCRAT image created because ACPI does not have a 1365 * CRAT for this device 1366 * @size: [OUT] size of virtual crat_image 1367 * @flags: COMPUTE_UNIT_CPU - Create VCRAT for CPU device 1368 * COMPUTE_UNIT_GPU - Create VCRAT for GPU 1369 * (COMPUTE_UNIT_CPU | COMPUTE_UNIT_GPU) - Create VCRAT for APU 1370 * -- this option is not currently implemented. 1371 * The assumption is that all AMD APUs will have CRAT 1372 * @kdev: Valid kfd_device required if flags contain COMPUTE_UNIT_GPU 1373 * 1374 * Return 0 if successful else return -ve value 1375 */ 1376 int kfd_create_crat_image_virtual(void **crat_image, size_t *size, 1377 int flags, struct kfd_dev *kdev, 1378 uint32_t proximity_domain) 1379 { 1380 void *pcrat_image = NULL; 1381 int ret = 0, num_nodes; 1382 size_t dyn_size; 1383 1384 if (!crat_image) 1385 return -EINVAL; 1386 1387 *crat_image = NULL; 1388 1389 /* Allocate the CPU Virtual CRAT size based on the number of online 1390 * nodes. Allocate VCRAT_SIZE_FOR_GPU for GPU virtual CRAT image. 1391 * This should cover all the current conditions. A check is put not 1392 * to overwrite beyond allocated size for GPUs 1393 */ 1394 switch (flags) { 1395 case COMPUTE_UNIT_CPU: 1396 num_nodes = num_online_nodes(); 1397 dyn_size = sizeof(struct crat_header) + 1398 num_nodes * (sizeof(struct crat_subtype_computeunit) + 1399 sizeof(struct crat_subtype_memory) + 1400 (num_nodes - 1) * sizeof(struct crat_subtype_iolink)); 1401 pcrat_image = kvmalloc(dyn_size, GFP_KERNEL); 1402 if (!pcrat_image) 1403 return -ENOMEM; 1404 *size = dyn_size; 1405 pr_debug("CRAT size is %ld", dyn_size); 1406 ret = kfd_create_vcrat_image_cpu(pcrat_image, size); 1407 break; 1408 case COMPUTE_UNIT_GPU: 1409 if (!kdev) 1410 return -EINVAL; 1411 pcrat_image = kvmalloc(VCRAT_SIZE_FOR_GPU, GFP_KERNEL); 1412 if (!pcrat_image) 1413 return -ENOMEM; 1414 *size = VCRAT_SIZE_FOR_GPU; 1415 ret = kfd_create_vcrat_image_gpu(pcrat_image, size, kdev, 1416 proximity_domain); 1417 break; 1418 case (COMPUTE_UNIT_CPU | COMPUTE_UNIT_GPU): 1419 /* TODO: */ 1420 ret = -EINVAL; 1421 pr_err("VCRAT not implemented for APU\n"); 1422 break; 1423 default: 1424 ret = -EINVAL; 1425 } 1426 1427 if (!ret) 1428 *crat_image = pcrat_image; 1429 else 1430 kvfree(pcrat_image); 1431 1432 return ret; 1433 } 1434 1435 1436 /* kfd_destroy_crat_image 1437 * 1438 * @crat_image: [IN] - crat_image from kfd_create_crat_image_xxx(..) 1439 * 1440 */ 1441 void kfd_destroy_crat_image(void *crat_image) 1442 { 1443 kvfree(crat_image); 1444 } 1445