1 /* 2 * Copyright 2014 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/types.h> 24 #include <linux/kernel.h> 25 #include <linux/pci.h> 26 #include <linux/errno.h> 27 #include <linux/acpi.h> 28 #include <linux/hash.h> 29 #include <linux/cpufreq.h> 30 #include <linux/log2.h> 31 #include <linux/dmi.h> 32 #include <linux/atomic.h> 33 34 #include "kfd_priv.h" 35 #include "kfd_crat.h" 36 #include "kfd_topology.h" 37 #include "kfd_device_queue_manager.h" 38 #include "kfd_iommu.h" 39 #include "amdgpu_amdkfd.h" 40 41 /* topology_device_list - Master list of all topology devices */ 42 static struct list_head topology_device_list; 43 static struct kfd_system_properties sys_props; 44 45 static DECLARE_RWSEM(topology_lock); 46 static atomic_t topology_crat_proximity_domain; 47 48 struct kfd_topology_device *kfd_topology_device_by_proximity_domain( 49 uint32_t proximity_domain) 50 { 51 struct kfd_topology_device *top_dev; 52 struct kfd_topology_device *device = NULL; 53 54 down_read(&topology_lock); 55 56 list_for_each_entry(top_dev, &topology_device_list, list) 57 if (top_dev->proximity_domain == proximity_domain) { 58 device = top_dev; 59 break; 60 } 61 62 up_read(&topology_lock); 63 64 return device; 65 } 66 67 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id) 68 { 69 struct kfd_topology_device *top_dev = NULL; 70 struct kfd_topology_device *ret = NULL; 71 72 down_read(&topology_lock); 73 74 list_for_each_entry(top_dev, &topology_device_list, list) 75 if (top_dev->gpu_id == gpu_id) { 76 ret = top_dev; 77 break; 78 } 79 80 up_read(&topology_lock); 81 82 return ret; 83 } 84 85 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id) 86 { 87 struct kfd_topology_device *top_dev; 88 89 top_dev = kfd_topology_device_by_id(gpu_id); 90 if (!top_dev) 91 return NULL; 92 93 return top_dev->gpu; 94 } 95 96 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev) 97 { 98 struct kfd_topology_device *top_dev; 99 struct kfd_dev *device = NULL; 100 101 down_read(&topology_lock); 102 103 list_for_each_entry(top_dev, &topology_device_list, list) 104 if (top_dev->gpu && top_dev->gpu->pdev == pdev) { 105 device = top_dev->gpu; 106 break; 107 } 108 109 up_read(&topology_lock); 110 111 return device; 112 } 113 114 struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd) 115 { 116 struct kfd_topology_device *top_dev; 117 struct kfd_dev *device = NULL; 118 119 down_read(&topology_lock); 120 121 list_for_each_entry(top_dev, &topology_device_list, list) 122 if (top_dev->gpu && top_dev->gpu->kgd == kgd) { 123 device = top_dev->gpu; 124 break; 125 } 126 127 up_read(&topology_lock); 128 129 return device; 130 } 131 132 /* Called with write topology_lock acquired */ 133 static void kfd_release_topology_device(struct kfd_topology_device *dev) 134 { 135 struct kfd_mem_properties *mem; 136 struct kfd_cache_properties *cache; 137 struct kfd_iolink_properties *iolink; 138 struct kfd_perf_properties *perf; 139 140 list_del(&dev->list); 141 142 while (dev->mem_props.next != &dev->mem_props) { 143 mem = container_of(dev->mem_props.next, 144 struct kfd_mem_properties, list); 145 list_del(&mem->list); 146 kfree(mem); 147 } 148 149 while (dev->cache_props.next != &dev->cache_props) { 150 cache = container_of(dev->cache_props.next, 151 struct kfd_cache_properties, list); 152 list_del(&cache->list); 153 kfree(cache); 154 } 155 156 while (dev->io_link_props.next != &dev->io_link_props) { 157 iolink = container_of(dev->io_link_props.next, 158 struct kfd_iolink_properties, list); 159 list_del(&iolink->list); 160 kfree(iolink); 161 } 162 163 while (dev->perf_props.next != &dev->perf_props) { 164 perf = container_of(dev->perf_props.next, 165 struct kfd_perf_properties, list); 166 list_del(&perf->list); 167 kfree(perf); 168 } 169 170 kfree(dev); 171 } 172 173 void kfd_release_topology_device_list(struct list_head *device_list) 174 { 175 struct kfd_topology_device *dev; 176 177 while (!list_empty(device_list)) { 178 dev = list_first_entry(device_list, 179 struct kfd_topology_device, list); 180 kfd_release_topology_device(dev); 181 } 182 } 183 184 static void kfd_release_live_view(void) 185 { 186 kfd_release_topology_device_list(&topology_device_list); 187 memset(&sys_props, 0, sizeof(sys_props)); 188 } 189 190 struct kfd_topology_device *kfd_create_topology_device( 191 struct list_head *device_list) 192 { 193 struct kfd_topology_device *dev; 194 195 dev = kfd_alloc_struct(dev); 196 if (!dev) { 197 pr_err("No memory to allocate a topology device"); 198 return NULL; 199 } 200 201 INIT_LIST_HEAD(&dev->mem_props); 202 INIT_LIST_HEAD(&dev->cache_props); 203 INIT_LIST_HEAD(&dev->io_link_props); 204 INIT_LIST_HEAD(&dev->perf_props); 205 206 list_add_tail(&dev->list, device_list); 207 208 return dev; 209 } 210 211 212 #define sysfs_show_gen_prop(buffer, fmt, ...) \ 213 snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__) 214 #define sysfs_show_32bit_prop(buffer, name, value) \ 215 sysfs_show_gen_prop(buffer, "%s %u\n", name, value) 216 #define sysfs_show_64bit_prop(buffer, name, value) \ 217 sysfs_show_gen_prop(buffer, "%s %llu\n", name, value) 218 #define sysfs_show_32bit_val(buffer, value) \ 219 sysfs_show_gen_prop(buffer, "%u\n", value) 220 #define sysfs_show_str_val(buffer, value) \ 221 sysfs_show_gen_prop(buffer, "%s\n", value) 222 223 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr, 224 char *buffer) 225 { 226 ssize_t ret; 227 228 /* Making sure that the buffer is an empty string */ 229 buffer[0] = 0; 230 231 if (attr == &sys_props.attr_genid) { 232 ret = sysfs_show_32bit_val(buffer, sys_props.generation_count); 233 } else if (attr == &sys_props.attr_props) { 234 sysfs_show_64bit_prop(buffer, "platform_oem", 235 sys_props.platform_oem); 236 sysfs_show_64bit_prop(buffer, "platform_id", 237 sys_props.platform_id); 238 ret = sysfs_show_64bit_prop(buffer, "platform_rev", 239 sys_props.platform_rev); 240 } else { 241 ret = -EINVAL; 242 } 243 244 return ret; 245 } 246 247 static void kfd_topology_kobj_release(struct kobject *kobj) 248 { 249 kfree(kobj); 250 } 251 252 static const struct sysfs_ops sysprops_ops = { 253 .show = sysprops_show, 254 }; 255 256 static struct kobj_type sysprops_type = { 257 .release = kfd_topology_kobj_release, 258 .sysfs_ops = &sysprops_ops, 259 }; 260 261 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr, 262 char *buffer) 263 { 264 ssize_t ret; 265 struct kfd_iolink_properties *iolink; 266 267 /* Making sure that the buffer is an empty string */ 268 buffer[0] = 0; 269 270 iolink = container_of(attr, struct kfd_iolink_properties, attr); 271 sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type); 272 sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj); 273 sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min); 274 sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from); 275 sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to); 276 sysfs_show_32bit_prop(buffer, "weight", iolink->weight); 277 sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency); 278 sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency); 279 sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth); 280 sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth); 281 sysfs_show_32bit_prop(buffer, "recommended_transfer_size", 282 iolink->rec_transfer_size); 283 ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags); 284 285 return ret; 286 } 287 288 static const struct sysfs_ops iolink_ops = { 289 .show = iolink_show, 290 }; 291 292 static struct kobj_type iolink_type = { 293 .release = kfd_topology_kobj_release, 294 .sysfs_ops = &iolink_ops, 295 }; 296 297 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr, 298 char *buffer) 299 { 300 ssize_t ret; 301 struct kfd_mem_properties *mem; 302 303 /* Making sure that the buffer is an empty string */ 304 buffer[0] = 0; 305 306 mem = container_of(attr, struct kfd_mem_properties, attr); 307 sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type); 308 sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes); 309 sysfs_show_32bit_prop(buffer, "flags", mem->flags); 310 sysfs_show_32bit_prop(buffer, "width", mem->width); 311 ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max); 312 313 return ret; 314 } 315 316 static const struct sysfs_ops mem_ops = { 317 .show = mem_show, 318 }; 319 320 static struct kobj_type mem_type = { 321 .release = kfd_topology_kobj_release, 322 .sysfs_ops = &mem_ops, 323 }; 324 325 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr, 326 char *buffer) 327 { 328 ssize_t ret; 329 uint32_t i, j; 330 struct kfd_cache_properties *cache; 331 332 /* Making sure that the buffer is an empty string */ 333 buffer[0] = 0; 334 335 cache = container_of(attr, struct kfd_cache_properties, attr); 336 sysfs_show_32bit_prop(buffer, "processor_id_low", 337 cache->processor_id_low); 338 sysfs_show_32bit_prop(buffer, "level", cache->cache_level); 339 sysfs_show_32bit_prop(buffer, "size", cache->cache_size); 340 sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size); 341 sysfs_show_32bit_prop(buffer, "cache_lines_per_tag", 342 cache->cachelines_per_tag); 343 sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc); 344 sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency); 345 sysfs_show_32bit_prop(buffer, "type", cache->cache_type); 346 snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer); 347 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++) 348 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) { 349 /* Check each bit */ 350 if (cache->sibling_map[i] & (1 << j)) 351 ret = snprintf(buffer, PAGE_SIZE, 352 "%s%d%s", buffer, 1, ","); 353 else 354 ret = snprintf(buffer, PAGE_SIZE, 355 "%s%d%s", buffer, 0, ","); 356 } 357 /* Replace the last "," with end of line */ 358 *(buffer + strlen(buffer) - 1) = 0xA; 359 return ret; 360 } 361 362 static const struct sysfs_ops cache_ops = { 363 .show = kfd_cache_show, 364 }; 365 366 static struct kobj_type cache_type = { 367 .release = kfd_topology_kobj_release, 368 .sysfs_ops = &cache_ops, 369 }; 370 371 /****** Sysfs of Performance Counters ******/ 372 373 struct kfd_perf_attr { 374 struct kobj_attribute attr; 375 uint32_t data; 376 }; 377 378 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs, 379 char *buf) 380 { 381 struct kfd_perf_attr *attr; 382 383 buf[0] = 0; 384 attr = container_of(attrs, struct kfd_perf_attr, attr); 385 if (!attr->data) /* invalid data for PMC */ 386 return 0; 387 else 388 return sysfs_show_32bit_val(buf, attr->data); 389 } 390 391 #define KFD_PERF_DESC(_name, _data) \ 392 { \ 393 .attr = __ATTR(_name, 0444, perf_show, NULL), \ 394 .data = _data, \ 395 } 396 397 static struct kfd_perf_attr perf_attr_iommu[] = { 398 KFD_PERF_DESC(max_concurrent, 0), 399 KFD_PERF_DESC(num_counters, 0), 400 KFD_PERF_DESC(counter_ids, 0), 401 }; 402 /****************************************/ 403 404 static ssize_t node_show(struct kobject *kobj, struct attribute *attr, 405 char *buffer) 406 { 407 struct kfd_topology_device *dev; 408 char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE]; 409 uint32_t i; 410 uint32_t log_max_watch_addr; 411 412 /* Making sure that the buffer is an empty string */ 413 buffer[0] = 0; 414 415 if (strcmp(attr->name, "gpu_id") == 0) { 416 dev = container_of(attr, struct kfd_topology_device, 417 attr_gpuid); 418 return sysfs_show_32bit_val(buffer, dev->gpu_id); 419 } 420 421 if (strcmp(attr->name, "name") == 0) { 422 dev = container_of(attr, struct kfd_topology_device, 423 attr_name); 424 for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) { 425 public_name[i] = 426 (char)dev->node_props.marketing_name[i]; 427 if (dev->node_props.marketing_name[i] == 0) 428 break; 429 } 430 public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0; 431 return sysfs_show_str_val(buffer, public_name); 432 } 433 434 dev = container_of(attr, struct kfd_topology_device, 435 attr_props); 436 sysfs_show_32bit_prop(buffer, "cpu_cores_count", 437 dev->node_props.cpu_cores_count); 438 sysfs_show_32bit_prop(buffer, "simd_count", 439 dev->node_props.simd_count); 440 sysfs_show_32bit_prop(buffer, "mem_banks_count", 441 dev->node_props.mem_banks_count); 442 sysfs_show_32bit_prop(buffer, "caches_count", 443 dev->node_props.caches_count); 444 sysfs_show_32bit_prop(buffer, "io_links_count", 445 dev->node_props.io_links_count); 446 sysfs_show_32bit_prop(buffer, "cpu_core_id_base", 447 dev->node_props.cpu_core_id_base); 448 sysfs_show_32bit_prop(buffer, "simd_id_base", 449 dev->node_props.simd_id_base); 450 sysfs_show_32bit_prop(buffer, "max_waves_per_simd", 451 dev->node_props.max_waves_per_simd); 452 sysfs_show_32bit_prop(buffer, "lds_size_in_kb", 453 dev->node_props.lds_size_in_kb); 454 sysfs_show_32bit_prop(buffer, "gds_size_in_kb", 455 dev->node_props.gds_size_in_kb); 456 sysfs_show_32bit_prop(buffer, "wave_front_size", 457 dev->node_props.wave_front_size); 458 sysfs_show_32bit_prop(buffer, "array_count", 459 dev->node_props.array_count); 460 sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine", 461 dev->node_props.simd_arrays_per_engine); 462 sysfs_show_32bit_prop(buffer, "cu_per_simd_array", 463 dev->node_props.cu_per_simd_array); 464 sysfs_show_32bit_prop(buffer, "simd_per_cu", 465 dev->node_props.simd_per_cu); 466 sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu", 467 dev->node_props.max_slots_scratch_cu); 468 sysfs_show_32bit_prop(buffer, "vendor_id", 469 dev->node_props.vendor_id); 470 sysfs_show_32bit_prop(buffer, "device_id", 471 dev->node_props.device_id); 472 sysfs_show_32bit_prop(buffer, "location_id", 473 dev->node_props.location_id); 474 sysfs_show_32bit_prop(buffer, "drm_render_minor", 475 dev->node_props.drm_render_minor); 476 sysfs_show_64bit_prop(buffer, "hive_id", 477 dev->node_props.hive_id); 478 479 if (dev->gpu) { 480 log_max_watch_addr = 481 __ilog2_u32(dev->gpu->device_info->num_of_watch_points); 482 483 if (log_max_watch_addr) { 484 dev->node_props.capability |= 485 HSA_CAP_WATCH_POINTS_SUPPORTED; 486 487 dev->node_props.capability |= 488 ((log_max_watch_addr << 489 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) & 490 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK); 491 } 492 493 if (dev->gpu->device_info->asic_family == CHIP_TONGA) 494 dev->node_props.capability |= 495 HSA_CAP_AQL_QUEUE_DOUBLE_MAP; 496 497 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute", 498 dev->node_props.max_engine_clk_fcompute); 499 500 sysfs_show_64bit_prop(buffer, "local_mem_size", 501 (unsigned long long int) 0); 502 503 sysfs_show_32bit_prop(buffer, "fw_version", 504 dev->gpu->mec_fw_version); 505 sysfs_show_32bit_prop(buffer, "capability", 506 dev->node_props.capability); 507 sysfs_show_32bit_prop(buffer, "sdma_fw_version", 508 dev->gpu->sdma_fw_version); 509 } 510 511 return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute", 512 cpufreq_quick_get_max(0)/1000); 513 } 514 515 static const struct sysfs_ops node_ops = { 516 .show = node_show, 517 }; 518 519 static struct kobj_type node_type = { 520 .release = kfd_topology_kobj_release, 521 .sysfs_ops = &node_ops, 522 }; 523 524 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr) 525 { 526 sysfs_remove_file(kobj, attr); 527 kobject_del(kobj); 528 kobject_put(kobj); 529 } 530 531 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev) 532 { 533 struct kfd_iolink_properties *iolink; 534 struct kfd_cache_properties *cache; 535 struct kfd_mem_properties *mem; 536 struct kfd_perf_properties *perf; 537 538 if (dev->kobj_iolink) { 539 list_for_each_entry(iolink, &dev->io_link_props, list) 540 if (iolink->kobj) { 541 kfd_remove_sysfs_file(iolink->kobj, 542 &iolink->attr); 543 iolink->kobj = NULL; 544 } 545 kobject_del(dev->kobj_iolink); 546 kobject_put(dev->kobj_iolink); 547 dev->kobj_iolink = NULL; 548 } 549 550 if (dev->kobj_cache) { 551 list_for_each_entry(cache, &dev->cache_props, list) 552 if (cache->kobj) { 553 kfd_remove_sysfs_file(cache->kobj, 554 &cache->attr); 555 cache->kobj = NULL; 556 } 557 kobject_del(dev->kobj_cache); 558 kobject_put(dev->kobj_cache); 559 dev->kobj_cache = NULL; 560 } 561 562 if (dev->kobj_mem) { 563 list_for_each_entry(mem, &dev->mem_props, list) 564 if (mem->kobj) { 565 kfd_remove_sysfs_file(mem->kobj, &mem->attr); 566 mem->kobj = NULL; 567 } 568 kobject_del(dev->kobj_mem); 569 kobject_put(dev->kobj_mem); 570 dev->kobj_mem = NULL; 571 } 572 573 if (dev->kobj_perf) { 574 list_for_each_entry(perf, &dev->perf_props, list) { 575 kfree(perf->attr_group); 576 perf->attr_group = NULL; 577 } 578 kobject_del(dev->kobj_perf); 579 kobject_put(dev->kobj_perf); 580 dev->kobj_perf = NULL; 581 } 582 583 if (dev->kobj_node) { 584 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid); 585 sysfs_remove_file(dev->kobj_node, &dev->attr_name); 586 sysfs_remove_file(dev->kobj_node, &dev->attr_props); 587 kobject_del(dev->kobj_node); 588 kobject_put(dev->kobj_node); 589 dev->kobj_node = NULL; 590 } 591 } 592 593 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev, 594 uint32_t id) 595 { 596 struct kfd_iolink_properties *iolink; 597 struct kfd_cache_properties *cache; 598 struct kfd_mem_properties *mem; 599 struct kfd_perf_properties *perf; 600 int ret; 601 uint32_t i, num_attrs; 602 struct attribute **attrs; 603 604 if (WARN_ON(dev->kobj_node)) 605 return -EEXIST; 606 607 /* 608 * Creating the sysfs folders 609 */ 610 dev->kobj_node = kfd_alloc_struct(dev->kobj_node); 611 if (!dev->kobj_node) 612 return -ENOMEM; 613 614 ret = kobject_init_and_add(dev->kobj_node, &node_type, 615 sys_props.kobj_nodes, "%d", id); 616 if (ret < 0) 617 return ret; 618 619 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node); 620 if (!dev->kobj_mem) 621 return -ENOMEM; 622 623 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node); 624 if (!dev->kobj_cache) 625 return -ENOMEM; 626 627 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node); 628 if (!dev->kobj_iolink) 629 return -ENOMEM; 630 631 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node); 632 if (!dev->kobj_perf) 633 return -ENOMEM; 634 635 /* 636 * Creating sysfs files for node properties 637 */ 638 dev->attr_gpuid.name = "gpu_id"; 639 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE; 640 sysfs_attr_init(&dev->attr_gpuid); 641 dev->attr_name.name = "name"; 642 dev->attr_name.mode = KFD_SYSFS_FILE_MODE; 643 sysfs_attr_init(&dev->attr_name); 644 dev->attr_props.name = "properties"; 645 dev->attr_props.mode = KFD_SYSFS_FILE_MODE; 646 sysfs_attr_init(&dev->attr_props); 647 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid); 648 if (ret < 0) 649 return ret; 650 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name); 651 if (ret < 0) 652 return ret; 653 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props); 654 if (ret < 0) 655 return ret; 656 657 i = 0; 658 list_for_each_entry(mem, &dev->mem_props, list) { 659 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 660 if (!mem->kobj) 661 return -ENOMEM; 662 ret = kobject_init_and_add(mem->kobj, &mem_type, 663 dev->kobj_mem, "%d", i); 664 if (ret < 0) 665 return ret; 666 667 mem->attr.name = "properties"; 668 mem->attr.mode = KFD_SYSFS_FILE_MODE; 669 sysfs_attr_init(&mem->attr); 670 ret = sysfs_create_file(mem->kobj, &mem->attr); 671 if (ret < 0) 672 return ret; 673 i++; 674 } 675 676 i = 0; 677 list_for_each_entry(cache, &dev->cache_props, list) { 678 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 679 if (!cache->kobj) 680 return -ENOMEM; 681 ret = kobject_init_and_add(cache->kobj, &cache_type, 682 dev->kobj_cache, "%d", i); 683 if (ret < 0) 684 return ret; 685 686 cache->attr.name = "properties"; 687 cache->attr.mode = KFD_SYSFS_FILE_MODE; 688 sysfs_attr_init(&cache->attr); 689 ret = sysfs_create_file(cache->kobj, &cache->attr); 690 if (ret < 0) 691 return ret; 692 i++; 693 } 694 695 i = 0; 696 list_for_each_entry(iolink, &dev->io_link_props, list) { 697 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 698 if (!iolink->kobj) 699 return -ENOMEM; 700 ret = kobject_init_and_add(iolink->kobj, &iolink_type, 701 dev->kobj_iolink, "%d", i); 702 if (ret < 0) 703 return ret; 704 705 iolink->attr.name = "properties"; 706 iolink->attr.mode = KFD_SYSFS_FILE_MODE; 707 sysfs_attr_init(&iolink->attr); 708 ret = sysfs_create_file(iolink->kobj, &iolink->attr); 709 if (ret < 0) 710 return ret; 711 i++; 712 } 713 714 /* All hardware blocks have the same number of attributes. */ 715 num_attrs = ARRAY_SIZE(perf_attr_iommu); 716 list_for_each_entry(perf, &dev->perf_props, list) { 717 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr) 718 * num_attrs + sizeof(struct attribute_group), 719 GFP_KERNEL); 720 if (!perf->attr_group) 721 return -ENOMEM; 722 723 attrs = (struct attribute **)(perf->attr_group + 1); 724 if (!strcmp(perf->block_name, "iommu")) { 725 /* Information of IOMMU's num_counters and counter_ids is shown 726 * under /sys/bus/event_source/devices/amd_iommu. We don't 727 * duplicate here. 728 */ 729 perf_attr_iommu[0].data = perf->max_concurrent; 730 for (i = 0; i < num_attrs; i++) 731 attrs[i] = &perf_attr_iommu[i].attr.attr; 732 } 733 perf->attr_group->name = perf->block_name; 734 perf->attr_group->attrs = attrs; 735 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group); 736 if (ret < 0) 737 return ret; 738 } 739 740 return 0; 741 } 742 743 /* Called with write topology lock acquired */ 744 static int kfd_build_sysfs_node_tree(void) 745 { 746 struct kfd_topology_device *dev; 747 int ret; 748 uint32_t i = 0; 749 750 list_for_each_entry(dev, &topology_device_list, list) { 751 ret = kfd_build_sysfs_node_entry(dev, i); 752 if (ret < 0) 753 return ret; 754 i++; 755 } 756 757 return 0; 758 } 759 760 /* Called with write topology lock acquired */ 761 static void kfd_remove_sysfs_node_tree(void) 762 { 763 struct kfd_topology_device *dev; 764 765 list_for_each_entry(dev, &topology_device_list, list) 766 kfd_remove_sysfs_node_entry(dev); 767 } 768 769 static int kfd_topology_update_sysfs(void) 770 { 771 int ret; 772 773 pr_info("Creating topology SYSFS entries\n"); 774 if (!sys_props.kobj_topology) { 775 sys_props.kobj_topology = 776 kfd_alloc_struct(sys_props.kobj_topology); 777 if (!sys_props.kobj_topology) 778 return -ENOMEM; 779 780 ret = kobject_init_and_add(sys_props.kobj_topology, 781 &sysprops_type, &kfd_device->kobj, 782 "topology"); 783 if (ret < 0) 784 return ret; 785 786 sys_props.kobj_nodes = kobject_create_and_add("nodes", 787 sys_props.kobj_topology); 788 if (!sys_props.kobj_nodes) 789 return -ENOMEM; 790 791 sys_props.attr_genid.name = "generation_id"; 792 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE; 793 sysfs_attr_init(&sys_props.attr_genid); 794 ret = sysfs_create_file(sys_props.kobj_topology, 795 &sys_props.attr_genid); 796 if (ret < 0) 797 return ret; 798 799 sys_props.attr_props.name = "system_properties"; 800 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE; 801 sysfs_attr_init(&sys_props.attr_props); 802 ret = sysfs_create_file(sys_props.kobj_topology, 803 &sys_props.attr_props); 804 if (ret < 0) 805 return ret; 806 } 807 808 kfd_remove_sysfs_node_tree(); 809 810 return kfd_build_sysfs_node_tree(); 811 } 812 813 static void kfd_topology_release_sysfs(void) 814 { 815 kfd_remove_sysfs_node_tree(); 816 if (sys_props.kobj_topology) { 817 sysfs_remove_file(sys_props.kobj_topology, 818 &sys_props.attr_genid); 819 sysfs_remove_file(sys_props.kobj_topology, 820 &sys_props.attr_props); 821 if (sys_props.kobj_nodes) { 822 kobject_del(sys_props.kobj_nodes); 823 kobject_put(sys_props.kobj_nodes); 824 sys_props.kobj_nodes = NULL; 825 } 826 kobject_del(sys_props.kobj_topology); 827 kobject_put(sys_props.kobj_topology); 828 sys_props.kobj_topology = NULL; 829 } 830 } 831 832 /* Called with write topology_lock acquired */ 833 static void kfd_topology_update_device_list(struct list_head *temp_list, 834 struct list_head *master_list) 835 { 836 while (!list_empty(temp_list)) { 837 list_move_tail(temp_list->next, master_list); 838 sys_props.num_devices++; 839 } 840 } 841 842 static void kfd_debug_print_topology(void) 843 { 844 struct kfd_topology_device *dev; 845 846 down_read(&topology_lock); 847 848 dev = list_last_entry(&topology_device_list, 849 struct kfd_topology_device, list); 850 if (dev) { 851 if (dev->node_props.cpu_cores_count && 852 dev->node_props.simd_count) { 853 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n", 854 dev->node_props.device_id, 855 dev->node_props.vendor_id); 856 } else if (dev->node_props.cpu_cores_count) 857 pr_info("Topology: Add CPU node\n"); 858 else if (dev->node_props.simd_count) 859 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n", 860 dev->node_props.device_id, 861 dev->node_props.vendor_id); 862 } 863 up_read(&topology_lock); 864 } 865 866 /* Helper function for intializing platform_xx members of 867 * kfd_system_properties. Uses OEM info from the last CPU/APU node. 868 */ 869 static void kfd_update_system_properties(void) 870 { 871 struct kfd_topology_device *dev; 872 873 down_read(&topology_lock); 874 dev = list_last_entry(&topology_device_list, 875 struct kfd_topology_device, list); 876 if (dev) { 877 sys_props.platform_id = 878 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK; 879 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id); 880 sys_props.platform_rev = dev->oem_revision; 881 } 882 up_read(&topology_lock); 883 } 884 885 static void find_system_memory(const struct dmi_header *dm, 886 void *private) 887 { 888 struct kfd_mem_properties *mem; 889 u16 mem_width, mem_clock; 890 struct kfd_topology_device *kdev = 891 (struct kfd_topology_device *)private; 892 const u8 *dmi_data = (const u8 *)(dm + 1); 893 894 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) { 895 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6)); 896 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11)); 897 list_for_each_entry(mem, &kdev->mem_props, list) { 898 if (mem_width != 0xFFFF && mem_width != 0) 899 mem->width = mem_width; 900 if (mem_clock != 0) 901 mem->mem_clk_max = mem_clock; 902 } 903 } 904 } 905 906 /* 907 * Performance counters information is not part of CRAT but we would like to 908 * put them in the sysfs under topology directory for Thunk to get the data. 909 * This function is called before updating the sysfs. 910 */ 911 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev) 912 { 913 /* These are the only counters supported so far */ 914 return kfd_iommu_add_perf_counters(kdev); 915 } 916 917 /* kfd_add_non_crat_information - Add information that is not currently 918 * defined in CRAT but is necessary for KFD topology 919 * @dev - topology device to which addition info is added 920 */ 921 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev) 922 { 923 /* Check if CPU only node. */ 924 if (!kdev->gpu) { 925 /* Add system memory information */ 926 dmi_walk(find_system_memory, kdev); 927 } 928 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */ 929 } 930 931 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices. 932 * Ignore CRAT for all other devices. AMD APU is identified if both CPU 933 * and GPU cores are present. 934 * @device_list - topology device list created by parsing ACPI CRAT table. 935 * @return - TRUE if invalid, FALSE is valid. 936 */ 937 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list) 938 { 939 struct kfd_topology_device *dev; 940 941 list_for_each_entry(dev, device_list, list) { 942 if (dev->node_props.cpu_cores_count && 943 dev->node_props.simd_count) 944 return false; 945 } 946 pr_info("Ignoring ACPI CRAT on non-APU system\n"); 947 return true; 948 } 949 950 int kfd_topology_init(void) 951 { 952 void *crat_image = NULL; 953 size_t image_size = 0; 954 int ret; 955 struct list_head temp_topology_device_list; 956 int cpu_only_node = 0; 957 struct kfd_topology_device *kdev; 958 int proximity_domain; 959 960 /* topology_device_list - Master list of all topology devices 961 * temp_topology_device_list - temporary list created while parsing CRAT 962 * or VCRAT. Once parsing is complete the contents of list is moved to 963 * topology_device_list 964 */ 965 966 /* Initialize the head for the both the lists */ 967 INIT_LIST_HEAD(&topology_device_list); 968 INIT_LIST_HEAD(&temp_topology_device_list); 969 init_rwsem(&topology_lock); 970 971 memset(&sys_props, 0, sizeof(sys_props)); 972 973 /* Proximity domains in ACPI CRAT tables start counting at 974 * 0. The same should be true for virtual CRAT tables created 975 * at this stage. GPUs added later in kfd_topology_add_device 976 * use a counter. 977 */ 978 proximity_domain = 0; 979 980 /* 981 * Get the CRAT image from the ACPI. If ACPI doesn't have one 982 * or if ACPI CRAT is invalid create a virtual CRAT. 983 * NOTE: The current implementation expects all AMD APUs to have 984 * CRAT. If no CRAT is available, it is assumed to be a CPU 985 */ 986 ret = kfd_create_crat_image_acpi(&crat_image, &image_size); 987 if (!ret) { 988 ret = kfd_parse_crat_table(crat_image, 989 &temp_topology_device_list, 990 proximity_domain); 991 if (ret || 992 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) { 993 kfd_release_topology_device_list( 994 &temp_topology_device_list); 995 kfd_destroy_crat_image(crat_image); 996 crat_image = NULL; 997 } 998 } 999 1000 if (!crat_image) { 1001 ret = kfd_create_crat_image_virtual(&crat_image, &image_size, 1002 COMPUTE_UNIT_CPU, NULL, 1003 proximity_domain); 1004 cpu_only_node = 1; 1005 if (ret) { 1006 pr_err("Error creating VCRAT table for CPU\n"); 1007 return ret; 1008 } 1009 1010 ret = kfd_parse_crat_table(crat_image, 1011 &temp_topology_device_list, 1012 proximity_domain); 1013 if (ret) { 1014 pr_err("Error parsing VCRAT table for CPU\n"); 1015 goto err; 1016 } 1017 } 1018 1019 kdev = list_first_entry(&temp_topology_device_list, 1020 struct kfd_topology_device, list); 1021 kfd_add_perf_to_topology(kdev); 1022 1023 down_write(&topology_lock); 1024 kfd_topology_update_device_list(&temp_topology_device_list, 1025 &topology_device_list); 1026 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1); 1027 ret = kfd_topology_update_sysfs(); 1028 up_write(&topology_lock); 1029 1030 if (!ret) { 1031 sys_props.generation_count++; 1032 kfd_update_system_properties(); 1033 kfd_debug_print_topology(); 1034 pr_info("Finished initializing topology\n"); 1035 } else 1036 pr_err("Failed to update topology in sysfs ret=%d\n", ret); 1037 1038 /* For nodes with GPU, this information gets added 1039 * when GPU is detected (kfd_topology_add_device). 1040 */ 1041 if (cpu_only_node) { 1042 /* Add additional information to CPU only node created above */ 1043 down_write(&topology_lock); 1044 kdev = list_first_entry(&topology_device_list, 1045 struct kfd_topology_device, list); 1046 up_write(&topology_lock); 1047 kfd_add_non_crat_information(kdev); 1048 } 1049 1050 err: 1051 kfd_destroy_crat_image(crat_image); 1052 return ret; 1053 } 1054 1055 void kfd_topology_shutdown(void) 1056 { 1057 down_write(&topology_lock); 1058 kfd_topology_release_sysfs(); 1059 kfd_release_live_view(); 1060 up_write(&topology_lock); 1061 } 1062 1063 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu) 1064 { 1065 uint32_t hashout; 1066 uint32_t buf[7]; 1067 uint64_t local_mem_size; 1068 int i; 1069 struct kfd_local_mem_info local_mem_info; 1070 1071 if (!gpu) 1072 return 0; 1073 1074 amdgpu_amdkfd_get_local_mem_info(gpu->kgd, &local_mem_info); 1075 1076 local_mem_size = local_mem_info.local_mem_size_private + 1077 local_mem_info.local_mem_size_public; 1078 1079 buf[0] = gpu->pdev->devfn; 1080 buf[1] = gpu->pdev->subsystem_vendor; 1081 buf[2] = gpu->pdev->subsystem_device; 1082 buf[3] = gpu->pdev->device; 1083 buf[4] = gpu->pdev->bus->number; 1084 buf[5] = lower_32_bits(local_mem_size); 1085 buf[6] = upper_32_bits(local_mem_size); 1086 1087 for (i = 0, hashout = 0; i < 7; i++) 1088 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH); 1089 1090 return hashout; 1091 } 1092 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If 1093 * the GPU device is not already present in the topology device 1094 * list then return NULL. This means a new topology device has to 1095 * be created for this GPU. 1096 * TODO: Rather than assiging @gpu to first topology device withtout 1097 * gpu attached, it will better to have more stringent check. 1098 */ 1099 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) 1100 { 1101 struct kfd_topology_device *dev; 1102 struct kfd_topology_device *out_dev = NULL; 1103 1104 down_write(&topology_lock); 1105 list_for_each_entry(dev, &topology_device_list, list) 1106 if (!dev->gpu && (dev->node_props.simd_count > 0)) { 1107 dev->gpu = gpu; 1108 out_dev = dev; 1109 break; 1110 } 1111 up_write(&topology_lock); 1112 return out_dev; 1113 } 1114 1115 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival) 1116 { 1117 /* 1118 * TODO: Generate an event for thunk about the arrival/removal 1119 * of the GPU 1120 */ 1121 } 1122 1123 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info, 1124 * patch this after CRAT parsing. 1125 */ 1126 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev) 1127 { 1128 struct kfd_mem_properties *mem; 1129 struct kfd_local_mem_info local_mem_info; 1130 1131 if (!dev) 1132 return; 1133 1134 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with 1135 * single bank of VRAM local memory. 1136 * for dGPUs - VCRAT reports only one bank of Local Memory 1137 * for APUs - If CRAT from ACPI reports more than one bank, then 1138 * all the banks will report the same mem_clk_max information 1139 */ 1140 amdgpu_amdkfd_get_local_mem_info(dev->gpu->kgd, &local_mem_info); 1141 1142 list_for_each_entry(mem, &dev->mem_props, list) 1143 mem->mem_clk_max = local_mem_info.mem_clk_max; 1144 } 1145 1146 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev) 1147 { 1148 struct kfd_iolink_properties *link, *cpu_link; 1149 struct kfd_topology_device *cpu_dev; 1150 uint32_t cap; 1151 uint32_t cpu_flag = CRAT_IOLINK_FLAGS_ENABLED; 1152 uint32_t flag = CRAT_IOLINK_FLAGS_ENABLED; 1153 1154 if (!dev || !dev->gpu) 1155 return; 1156 1157 pcie_capability_read_dword(dev->gpu->pdev, 1158 PCI_EXP_DEVCAP2, &cap); 1159 1160 if (!(cap & (PCI_EXP_DEVCAP2_ATOMIC_COMP32 | 1161 PCI_EXP_DEVCAP2_ATOMIC_COMP64))) 1162 cpu_flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1163 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1164 1165 if (!dev->gpu->pci_atomic_requested || 1166 dev->gpu->device_info->asic_family == CHIP_HAWAII) 1167 flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1168 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1169 1170 /* GPU only creates direct links so apply flags setting to all */ 1171 list_for_each_entry(link, &dev->io_link_props, list) { 1172 link->flags = flag; 1173 cpu_dev = kfd_topology_device_by_proximity_domain( 1174 link->node_to); 1175 if (cpu_dev) { 1176 list_for_each_entry(cpu_link, 1177 &cpu_dev->io_link_props, list) 1178 if (cpu_link->node_to == link->node_from) 1179 cpu_link->flags = cpu_flag; 1180 } 1181 } 1182 } 1183 1184 int kfd_topology_add_device(struct kfd_dev *gpu) 1185 { 1186 uint32_t gpu_id; 1187 struct kfd_topology_device *dev; 1188 struct kfd_cu_info cu_info; 1189 int res = 0; 1190 struct list_head temp_topology_device_list; 1191 void *crat_image = NULL; 1192 size_t image_size = 0; 1193 int proximity_domain; 1194 1195 INIT_LIST_HEAD(&temp_topology_device_list); 1196 1197 gpu_id = kfd_generate_gpu_id(gpu); 1198 1199 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id); 1200 1201 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain); 1202 1203 /* Check to see if this gpu device exists in the topology_device_list. 1204 * If so, assign the gpu to that device, 1205 * else create a Virtual CRAT for this gpu device and then parse that 1206 * CRAT to create a new topology device. Once created assign the gpu to 1207 * that topology device 1208 */ 1209 dev = kfd_assign_gpu(gpu); 1210 if (!dev) { 1211 res = kfd_create_crat_image_virtual(&crat_image, &image_size, 1212 COMPUTE_UNIT_GPU, gpu, 1213 proximity_domain); 1214 if (res) { 1215 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n", 1216 gpu_id); 1217 return res; 1218 } 1219 res = kfd_parse_crat_table(crat_image, 1220 &temp_topology_device_list, 1221 proximity_domain); 1222 if (res) { 1223 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n", 1224 gpu_id); 1225 goto err; 1226 } 1227 1228 down_write(&topology_lock); 1229 kfd_topology_update_device_list(&temp_topology_device_list, 1230 &topology_device_list); 1231 1232 /* Update the SYSFS tree, since we added another topology 1233 * device 1234 */ 1235 res = kfd_topology_update_sysfs(); 1236 up_write(&topology_lock); 1237 1238 if (!res) 1239 sys_props.generation_count++; 1240 else 1241 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n", 1242 gpu_id, res); 1243 dev = kfd_assign_gpu(gpu); 1244 if (WARN_ON(!dev)) { 1245 res = -ENODEV; 1246 goto err; 1247 } 1248 } 1249 1250 dev->gpu_id = gpu_id; 1251 gpu->id = gpu_id; 1252 1253 /* TODO: Move the following lines to function 1254 * kfd_add_non_crat_information 1255 */ 1256 1257 /* Fill-in additional information that is not available in CRAT but 1258 * needed for the topology 1259 */ 1260 1261 amdgpu_amdkfd_get_cu_info(dev->gpu->kgd, &cu_info); 1262 dev->node_props.simd_arrays_per_engine = 1263 cu_info.num_shader_arrays_per_engine; 1264 1265 dev->node_props.vendor_id = gpu->pdev->vendor; 1266 dev->node_props.device_id = gpu->pdev->device; 1267 dev->node_props.location_id = PCI_DEVID(gpu->pdev->bus->number, 1268 gpu->pdev->devfn); 1269 dev->node_props.max_engine_clk_fcompute = 1270 amdgpu_amdkfd_get_max_engine_clock_in_mhz(dev->gpu->kgd); 1271 dev->node_props.max_engine_clk_ccompute = 1272 cpufreq_quick_get_max(0) / 1000; 1273 dev->node_props.drm_render_minor = 1274 gpu->shared_resources.drm_render_minor; 1275 1276 dev->node_props.hive_id = gpu->hive_id; 1277 1278 kfd_fill_mem_clk_max_info(dev); 1279 kfd_fill_iolink_non_crat_info(dev); 1280 1281 switch (dev->gpu->device_info->asic_family) { 1282 case CHIP_KAVERI: 1283 case CHIP_HAWAII: 1284 case CHIP_TONGA: 1285 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 << 1286 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1287 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1288 break; 1289 case CHIP_CARRIZO: 1290 case CHIP_FIJI: 1291 case CHIP_POLARIS10: 1292 case CHIP_POLARIS11: 1293 case CHIP_POLARIS12: 1294 pr_debug("Adding doorbell packet type capability\n"); 1295 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 << 1296 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1297 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1298 break; 1299 case CHIP_VEGA10: 1300 case CHIP_VEGA12: 1301 case CHIP_VEGA20: 1302 case CHIP_RAVEN: 1303 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 << 1304 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1305 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1306 break; 1307 default: 1308 WARN(1, "Unexpected ASIC family %u", 1309 dev->gpu->device_info->asic_family); 1310 } 1311 1312 /* Fix errors in CZ CRAT. 1313 * simd_count: Carrizo CRAT reports wrong simd_count, probably 1314 * because it doesn't consider masked out CUs 1315 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd 1316 * capability flag: Carrizo CRAT doesn't report IOMMU flags 1317 */ 1318 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) { 1319 dev->node_props.simd_count = 1320 cu_info.simd_per_cu * cu_info.cu_active_number; 1321 dev->node_props.max_waves_per_simd = 10; 1322 dev->node_props.capability |= HSA_CAP_ATS_PRESENT; 1323 } 1324 1325 kfd_debug_print_topology(); 1326 1327 if (!res) 1328 kfd_notify_gpu_change(gpu_id, 1); 1329 err: 1330 kfd_destroy_crat_image(crat_image); 1331 return res; 1332 } 1333 1334 int kfd_topology_remove_device(struct kfd_dev *gpu) 1335 { 1336 struct kfd_topology_device *dev, *tmp; 1337 uint32_t gpu_id; 1338 int res = -ENODEV; 1339 1340 down_write(&topology_lock); 1341 1342 list_for_each_entry_safe(dev, tmp, &topology_device_list, list) 1343 if (dev->gpu == gpu) { 1344 gpu_id = dev->gpu_id; 1345 kfd_remove_sysfs_node_entry(dev); 1346 kfd_release_topology_device(dev); 1347 sys_props.num_devices--; 1348 res = 0; 1349 if (kfd_topology_update_sysfs() < 0) 1350 kfd_topology_release_sysfs(); 1351 break; 1352 } 1353 1354 up_write(&topology_lock); 1355 1356 if (!res) 1357 kfd_notify_gpu_change(gpu_id, 0); 1358 1359 return res; 1360 } 1361 1362 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD 1363 * topology. If GPU device is found @idx, then valid kfd_dev pointer is 1364 * returned through @kdev 1365 * Return - 0: On success (@kdev will be NULL for non GPU nodes) 1366 * -1: If end of list 1367 */ 1368 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev) 1369 { 1370 1371 struct kfd_topology_device *top_dev; 1372 uint8_t device_idx = 0; 1373 1374 *kdev = NULL; 1375 down_read(&topology_lock); 1376 1377 list_for_each_entry(top_dev, &topology_device_list, list) { 1378 if (device_idx == idx) { 1379 *kdev = top_dev->gpu; 1380 up_read(&topology_lock); 1381 return 0; 1382 } 1383 1384 device_idx++; 1385 } 1386 1387 up_read(&topology_lock); 1388 1389 return -1; 1390 1391 } 1392 1393 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask) 1394 { 1395 const struct cpuinfo_x86 *cpuinfo; 1396 int first_cpu_of_numa_node; 1397 1398 if (!cpumask || cpumask == cpu_none_mask) 1399 return -1; 1400 first_cpu_of_numa_node = cpumask_first(cpumask); 1401 if (first_cpu_of_numa_node >= nr_cpu_ids) 1402 return -1; 1403 cpuinfo = &cpu_data(first_cpu_of_numa_node); 1404 1405 return cpuinfo->apicid; 1406 } 1407 1408 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor 1409 * of the given NUMA node (numa_node_id) 1410 * Return -1 on failure 1411 */ 1412 int kfd_numa_node_to_apic_id(int numa_node_id) 1413 { 1414 if (numa_node_id == -1) { 1415 pr_warn("Invalid NUMA Node. Use online CPU mask\n"); 1416 return kfd_cpumask_to_apic_id(cpu_online_mask); 1417 } 1418 return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id)); 1419 } 1420 1421 #if defined(CONFIG_DEBUG_FS) 1422 1423 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data) 1424 { 1425 struct kfd_topology_device *dev; 1426 unsigned int i = 0; 1427 int r = 0; 1428 1429 down_read(&topology_lock); 1430 1431 list_for_each_entry(dev, &topology_device_list, list) { 1432 if (!dev->gpu) { 1433 i++; 1434 continue; 1435 } 1436 1437 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1438 r = dqm_debugfs_hqds(m, dev->gpu->dqm); 1439 if (r) 1440 break; 1441 } 1442 1443 up_read(&topology_lock); 1444 1445 return r; 1446 } 1447 1448 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data) 1449 { 1450 struct kfd_topology_device *dev; 1451 unsigned int i = 0; 1452 int r = 0; 1453 1454 down_read(&topology_lock); 1455 1456 list_for_each_entry(dev, &topology_device_list, list) { 1457 if (!dev->gpu) { 1458 i++; 1459 continue; 1460 } 1461 1462 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1463 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets); 1464 if (r) 1465 break; 1466 } 1467 1468 up_read(&topology_lock); 1469 1470 return r; 1471 } 1472 1473 #endif 1474