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 40 /* topology_device_list - Master list of all topology devices */ 41 static struct list_head topology_device_list; 42 static struct kfd_system_properties sys_props; 43 44 static DECLARE_RWSEM(topology_lock); 45 static atomic_t topology_crat_proximity_domain; 46 47 struct kfd_topology_device *kfd_topology_device_by_proximity_domain( 48 uint32_t proximity_domain) 49 { 50 struct kfd_topology_device *top_dev; 51 struct kfd_topology_device *device = NULL; 52 53 down_read(&topology_lock); 54 55 list_for_each_entry(top_dev, &topology_device_list, list) 56 if (top_dev->proximity_domain == proximity_domain) { 57 device = top_dev; 58 break; 59 } 60 61 up_read(&topology_lock); 62 63 return device; 64 } 65 66 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id) 67 { 68 struct kfd_topology_device *top_dev = NULL; 69 struct kfd_topology_device *ret = NULL; 70 71 down_read(&topology_lock); 72 73 list_for_each_entry(top_dev, &topology_device_list, list) 74 if (top_dev->gpu_id == gpu_id) { 75 ret = top_dev; 76 break; 77 } 78 79 up_read(&topology_lock); 80 81 return ret; 82 } 83 84 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id) 85 { 86 struct kfd_topology_device *top_dev; 87 88 top_dev = kfd_topology_device_by_id(gpu_id); 89 if (!top_dev) 90 return NULL; 91 92 return top_dev->gpu; 93 } 94 95 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev) 96 { 97 struct kfd_topology_device *top_dev; 98 struct kfd_dev *device = NULL; 99 100 down_read(&topology_lock); 101 102 list_for_each_entry(top_dev, &topology_device_list, list) 103 if (top_dev->gpu->pdev == pdev) { 104 device = top_dev->gpu; 105 break; 106 } 107 108 up_read(&topology_lock); 109 110 return device; 111 } 112 113 /* Called with write topology_lock acquired */ 114 static void kfd_release_topology_device(struct kfd_topology_device *dev) 115 { 116 struct kfd_mem_properties *mem; 117 struct kfd_cache_properties *cache; 118 struct kfd_iolink_properties *iolink; 119 struct kfd_perf_properties *perf; 120 121 list_del(&dev->list); 122 123 while (dev->mem_props.next != &dev->mem_props) { 124 mem = container_of(dev->mem_props.next, 125 struct kfd_mem_properties, list); 126 list_del(&mem->list); 127 kfree(mem); 128 } 129 130 while (dev->cache_props.next != &dev->cache_props) { 131 cache = container_of(dev->cache_props.next, 132 struct kfd_cache_properties, list); 133 list_del(&cache->list); 134 kfree(cache); 135 } 136 137 while (dev->io_link_props.next != &dev->io_link_props) { 138 iolink = container_of(dev->io_link_props.next, 139 struct kfd_iolink_properties, list); 140 list_del(&iolink->list); 141 kfree(iolink); 142 } 143 144 while (dev->perf_props.next != &dev->perf_props) { 145 perf = container_of(dev->perf_props.next, 146 struct kfd_perf_properties, list); 147 list_del(&perf->list); 148 kfree(perf); 149 } 150 151 kfree(dev); 152 } 153 154 void kfd_release_topology_device_list(struct list_head *device_list) 155 { 156 struct kfd_topology_device *dev; 157 158 while (!list_empty(device_list)) { 159 dev = list_first_entry(device_list, 160 struct kfd_topology_device, list); 161 kfd_release_topology_device(dev); 162 } 163 } 164 165 static void kfd_release_live_view(void) 166 { 167 kfd_release_topology_device_list(&topology_device_list); 168 memset(&sys_props, 0, sizeof(sys_props)); 169 } 170 171 struct kfd_topology_device *kfd_create_topology_device( 172 struct list_head *device_list) 173 { 174 struct kfd_topology_device *dev; 175 176 dev = kfd_alloc_struct(dev); 177 if (!dev) { 178 pr_err("No memory to allocate a topology device"); 179 return NULL; 180 } 181 182 INIT_LIST_HEAD(&dev->mem_props); 183 INIT_LIST_HEAD(&dev->cache_props); 184 INIT_LIST_HEAD(&dev->io_link_props); 185 INIT_LIST_HEAD(&dev->perf_props); 186 187 list_add_tail(&dev->list, device_list); 188 189 return dev; 190 } 191 192 193 #define sysfs_show_gen_prop(buffer, fmt, ...) \ 194 snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__) 195 #define sysfs_show_32bit_prop(buffer, name, value) \ 196 sysfs_show_gen_prop(buffer, "%s %u\n", name, value) 197 #define sysfs_show_64bit_prop(buffer, name, value) \ 198 sysfs_show_gen_prop(buffer, "%s %llu\n", name, value) 199 #define sysfs_show_32bit_val(buffer, value) \ 200 sysfs_show_gen_prop(buffer, "%u\n", value) 201 #define sysfs_show_str_val(buffer, value) \ 202 sysfs_show_gen_prop(buffer, "%s\n", value) 203 204 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr, 205 char *buffer) 206 { 207 ssize_t ret; 208 209 /* Making sure that the buffer is an empty string */ 210 buffer[0] = 0; 211 212 if (attr == &sys_props.attr_genid) { 213 ret = sysfs_show_32bit_val(buffer, sys_props.generation_count); 214 } else if (attr == &sys_props.attr_props) { 215 sysfs_show_64bit_prop(buffer, "platform_oem", 216 sys_props.platform_oem); 217 sysfs_show_64bit_prop(buffer, "platform_id", 218 sys_props.platform_id); 219 ret = sysfs_show_64bit_prop(buffer, "platform_rev", 220 sys_props.platform_rev); 221 } else { 222 ret = -EINVAL; 223 } 224 225 return ret; 226 } 227 228 static void kfd_topology_kobj_release(struct kobject *kobj) 229 { 230 kfree(kobj); 231 } 232 233 static const struct sysfs_ops sysprops_ops = { 234 .show = sysprops_show, 235 }; 236 237 static struct kobj_type sysprops_type = { 238 .release = kfd_topology_kobj_release, 239 .sysfs_ops = &sysprops_ops, 240 }; 241 242 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr, 243 char *buffer) 244 { 245 ssize_t ret; 246 struct kfd_iolink_properties *iolink; 247 248 /* Making sure that the buffer is an empty string */ 249 buffer[0] = 0; 250 251 iolink = container_of(attr, struct kfd_iolink_properties, attr); 252 sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type); 253 sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj); 254 sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min); 255 sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from); 256 sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to); 257 sysfs_show_32bit_prop(buffer, "weight", iolink->weight); 258 sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency); 259 sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency); 260 sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth); 261 sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth); 262 sysfs_show_32bit_prop(buffer, "recommended_transfer_size", 263 iolink->rec_transfer_size); 264 ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags); 265 266 return ret; 267 } 268 269 static const struct sysfs_ops iolink_ops = { 270 .show = iolink_show, 271 }; 272 273 static struct kobj_type iolink_type = { 274 .release = kfd_topology_kobj_release, 275 .sysfs_ops = &iolink_ops, 276 }; 277 278 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr, 279 char *buffer) 280 { 281 ssize_t ret; 282 struct kfd_mem_properties *mem; 283 284 /* Making sure that the buffer is an empty string */ 285 buffer[0] = 0; 286 287 mem = container_of(attr, struct kfd_mem_properties, attr); 288 sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type); 289 sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes); 290 sysfs_show_32bit_prop(buffer, "flags", mem->flags); 291 sysfs_show_32bit_prop(buffer, "width", mem->width); 292 ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max); 293 294 return ret; 295 } 296 297 static const struct sysfs_ops mem_ops = { 298 .show = mem_show, 299 }; 300 301 static struct kobj_type mem_type = { 302 .release = kfd_topology_kobj_release, 303 .sysfs_ops = &mem_ops, 304 }; 305 306 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr, 307 char *buffer) 308 { 309 ssize_t ret; 310 uint32_t i, j; 311 struct kfd_cache_properties *cache; 312 313 /* Making sure that the buffer is an empty string */ 314 buffer[0] = 0; 315 316 cache = container_of(attr, struct kfd_cache_properties, attr); 317 sysfs_show_32bit_prop(buffer, "processor_id_low", 318 cache->processor_id_low); 319 sysfs_show_32bit_prop(buffer, "level", cache->cache_level); 320 sysfs_show_32bit_prop(buffer, "size", cache->cache_size); 321 sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size); 322 sysfs_show_32bit_prop(buffer, "cache_lines_per_tag", 323 cache->cachelines_per_tag); 324 sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc); 325 sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency); 326 sysfs_show_32bit_prop(buffer, "type", cache->cache_type); 327 snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer); 328 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++) 329 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) { 330 /* Check each bit */ 331 if (cache->sibling_map[i] & (1 << j)) 332 ret = snprintf(buffer, PAGE_SIZE, 333 "%s%d%s", buffer, 1, ","); 334 else 335 ret = snprintf(buffer, PAGE_SIZE, 336 "%s%d%s", buffer, 0, ","); 337 } 338 /* Replace the last "," with end of line */ 339 *(buffer + strlen(buffer) - 1) = 0xA; 340 return ret; 341 } 342 343 static const struct sysfs_ops cache_ops = { 344 .show = kfd_cache_show, 345 }; 346 347 static struct kobj_type cache_type = { 348 .release = kfd_topology_kobj_release, 349 .sysfs_ops = &cache_ops, 350 }; 351 352 /****** Sysfs of Performance Counters ******/ 353 354 struct kfd_perf_attr { 355 struct kobj_attribute attr; 356 uint32_t data; 357 }; 358 359 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs, 360 char *buf) 361 { 362 struct kfd_perf_attr *attr; 363 364 buf[0] = 0; 365 attr = container_of(attrs, struct kfd_perf_attr, attr); 366 if (!attr->data) /* invalid data for PMC */ 367 return 0; 368 else 369 return sysfs_show_32bit_val(buf, attr->data); 370 } 371 372 #define KFD_PERF_DESC(_name, _data) \ 373 { \ 374 .attr = __ATTR(_name, 0444, perf_show, NULL), \ 375 .data = _data, \ 376 } 377 378 static struct kfd_perf_attr perf_attr_iommu[] = { 379 KFD_PERF_DESC(max_concurrent, 0), 380 KFD_PERF_DESC(num_counters, 0), 381 KFD_PERF_DESC(counter_ids, 0), 382 }; 383 /****************************************/ 384 385 static ssize_t node_show(struct kobject *kobj, struct attribute *attr, 386 char *buffer) 387 { 388 struct kfd_topology_device *dev; 389 char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE]; 390 uint32_t i; 391 uint32_t log_max_watch_addr; 392 393 /* Making sure that the buffer is an empty string */ 394 buffer[0] = 0; 395 396 if (strcmp(attr->name, "gpu_id") == 0) { 397 dev = container_of(attr, struct kfd_topology_device, 398 attr_gpuid); 399 return sysfs_show_32bit_val(buffer, dev->gpu_id); 400 } 401 402 if (strcmp(attr->name, "name") == 0) { 403 dev = container_of(attr, struct kfd_topology_device, 404 attr_name); 405 for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) { 406 public_name[i] = 407 (char)dev->node_props.marketing_name[i]; 408 if (dev->node_props.marketing_name[i] == 0) 409 break; 410 } 411 public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0; 412 return sysfs_show_str_val(buffer, public_name); 413 } 414 415 dev = container_of(attr, struct kfd_topology_device, 416 attr_props); 417 sysfs_show_32bit_prop(buffer, "cpu_cores_count", 418 dev->node_props.cpu_cores_count); 419 sysfs_show_32bit_prop(buffer, "simd_count", 420 dev->node_props.simd_count); 421 sysfs_show_32bit_prop(buffer, "mem_banks_count", 422 dev->node_props.mem_banks_count); 423 sysfs_show_32bit_prop(buffer, "caches_count", 424 dev->node_props.caches_count); 425 sysfs_show_32bit_prop(buffer, "io_links_count", 426 dev->node_props.io_links_count); 427 sysfs_show_32bit_prop(buffer, "cpu_core_id_base", 428 dev->node_props.cpu_core_id_base); 429 sysfs_show_32bit_prop(buffer, "simd_id_base", 430 dev->node_props.simd_id_base); 431 sysfs_show_32bit_prop(buffer, "max_waves_per_simd", 432 dev->node_props.max_waves_per_simd); 433 sysfs_show_32bit_prop(buffer, "lds_size_in_kb", 434 dev->node_props.lds_size_in_kb); 435 sysfs_show_32bit_prop(buffer, "gds_size_in_kb", 436 dev->node_props.gds_size_in_kb); 437 sysfs_show_32bit_prop(buffer, "wave_front_size", 438 dev->node_props.wave_front_size); 439 sysfs_show_32bit_prop(buffer, "array_count", 440 dev->node_props.array_count); 441 sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine", 442 dev->node_props.simd_arrays_per_engine); 443 sysfs_show_32bit_prop(buffer, "cu_per_simd_array", 444 dev->node_props.cu_per_simd_array); 445 sysfs_show_32bit_prop(buffer, "simd_per_cu", 446 dev->node_props.simd_per_cu); 447 sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu", 448 dev->node_props.max_slots_scratch_cu); 449 sysfs_show_32bit_prop(buffer, "vendor_id", 450 dev->node_props.vendor_id); 451 sysfs_show_32bit_prop(buffer, "device_id", 452 dev->node_props.device_id); 453 sysfs_show_32bit_prop(buffer, "location_id", 454 dev->node_props.location_id); 455 sysfs_show_32bit_prop(buffer, "drm_render_minor", 456 dev->node_props.drm_render_minor); 457 458 if (dev->gpu) { 459 log_max_watch_addr = 460 __ilog2_u32(dev->gpu->device_info->num_of_watch_points); 461 462 if (log_max_watch_addr) { 463 dev->node_props.capability |= 464 HSA_CAP_WATCH_POINTS_SUPPORTED; 465 466 dev->node_props.capability |= 467 ((log_max_watch_addr << 468 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) & 469 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK); 470 } 471 472 if (dev->gpu->device_info->asic_family == CHIP_TONGA) 473 dev->node_props.capability |= 474 HSA_CAP_AQL_QUEUE_DOUBLE_MAP; 475 476 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute", 477 dev->node_props.max_engine_clk_fcompute); 478 479 sysfs_show_64bit_prop(buffer, "local_mem_size", 480 (unsigned long long int) 0); 481 482 sysfs_show_32bit_prop(buffer, "fw_version", 483 dev->gpu->kfd2kgd->get_fw_version( 484 dev->gpu->kgd, 485 KGD_ENGINE_MEC1)); 486 sysfs_show_32bit_prop(buffer, "capability", 487 dev->node_props.capability); 488 } 489 490 return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute", 491 cpufreq_quick_get_max(0)/1000); 492 } 493 494 static const struct sysfs_ops node_ops = { 495 .show = node_show, 496 }; 497 498 static struct kobj_type node_type = { 499 .release = kfd_topology_kobj_release, 500 .sysfs_ops = &node_ops, 501 }; 502 503 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr) 504 { 505 sysfs_remove_file(kobj, attr); 506 kobject_del(kobj); 507 kobject_put(kobj); 508 } 509 510 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev) 511 { 512 struct kfd_iolink_properties *iolink; 513 struct kfd_cache_properties *cache; 514 struct kfd_mem_properties *mem; 515 struct kfd_perf_properties *perf; 516 517 if (dev->kobj_iolink) { 518 list_for_each_entry(iolink, &dev->io_link_props, list) 519 if (iolink->kobj) { 520 kfd_remove_sysfs_file(iolink->kobj, 521 &iolink->attr); 522 iolink->kobj = NULL; 523 } 524 kobject_del(dev->kobj_iolink); 525 kobject_put(dev->kobj_iolink); 526 dev->kobj_iolink = NULL; 527 } 528 529 if (dev->kobj_cache) { 530 list_for_each_entry(cache, &dev->cache_props, list) 531 if (cache->kobj) { 532 kfd_remove_sysfs_file(cache->kobj, 533 &cache->attr); 534 cache->kobj = NULL; 535 } 536 kobject_del(dev->kobj_cache); 537 kobject_put(dev->kobj_cache); 538 dev->kobj_cache = NULL; 539 } 540 541 if (dev->kobj_mem) { 542 list_for_each_entry(mem, &dev->mem_props, list) 543 if (mem->kobj) { 544 kfd_remove_sysfs_file(mem->kobj, &mem->attr); 545 mem->kobj = NULL; 546 } 547 kobject_del(dev->kobj_mem); 548 kobject_put(dev->kobj_mem); 549 dev->kobj_mem = NULL; 550 } 551 552 if (dev->kobj_perf) { 553 list_for_each_entry(perf, &dev->perf_props, list) { 554 kfree(perf->attr_group); 555 perf->attr_group = NULL; 556 } 557 kobject_del(dev->kobj_perf); 558 kobject_put(dev->kobj_perf); 559 dev->kobj_perf = NULL; 560 } 561 562 if (dev->kobj_node) { 563 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid); 564 sysfs_remove_file(dev->kobj_node, &dev->attr_name); 565 sysfs_remove_file(dev->kobj_node, &dev->attr_props); 566 kobject_del(dev->kobj_node); 567 kobject_put(dev->kobj_node); 568 dev->kobj_node = NULL; 569 } 570 } 571 572 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev, 573 uint32_t id) 574 { 575 struct kfd_iolink_properties *iolink; 576 struct kfd_cache_properties *cache; 577 struct kfd_mem_properties *mem; 578 struct kfd_perf_properties *perf; 579 int ret; 580 uint32_t i, num_attrs; 581 struct attribute **attrs; 582 583 if (WARN_ON(dev->kobj_node)) 584 return -EEXIST; 585 586 /* 587 * Creating the sysfs folders 588 */ 589 dev->kobj_node = kfd_alloc_struct(dev->kobj_node); 590 if (!dev->kobj_node) 591 return -ENOMEM; 592 593 ret = kobject_init_and_add(dev->kobj_node, &node_type, 594 sys_props.kobj_nodes, "%d", id); 595 if (ret < 0) 596 return ret; 597 598 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node); 599 if (!dev->kobj_mem) 600 return -ENOMEM; 601 602 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node); 603 if (!dev->kobj_cache) 604 return -ENOMEM; 605 606 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node); 607 if (!dev->kobj_iolink) 608 return -ENOMEM; 609 610 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node); 611 if (!dev->kobj_perf) 612 return -ENOMEM; 613 614 /* 615 * Creating sysfs files for node properties 616 */ 617 dev->attr_gpuid.name = "gpu_id"; 618 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE; 619 sysfs_attr_init(&dev->attr_gpuid); 620 dev->attr_name.name = "name"; 621 dev->attr_name.mode = KFD_SYSFS_FILE_MODE; 622 sysfs_attr_init(&dev->attr_name); 623 dev->attr_props.name = "properties"; 624 dev->attr_props.mode = KFD_SYSFS_FILE_MODE; 625 sysfs_attr_init(&dev->attr_props); 626 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid); 627 if (ret < 0) 628 return ret; 629 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name); 630 if (ret < 0) 631 return ret; 632 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props); 633 if (ret < 0) 634 return ret; 635 636 i = 0; 637 list_for_each_entry(mem, &dev->mem_props, list) { 638 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 639 if (!mem->kobj) 640 return -ENOMEM; 641 ret = kobject_init_and_add(mem->kobj, &mem_type, 642 dev->kobj_mem, "%d", i); 643 if (ret < 0) 644 return ret; 645 646 mem->attr.name = "properties"; 647 mem->attr.mode = KFD_SYSFS_FILE_MODE; 648 sysfs_attr_init(&mem->attr); 649 ret = sysfs_create_file(mem->kobj, &mem->attr); 650 if (ret < 0) 651 return ret; 652 i++; 653 } 654 655 i = 0; 656 list_for_each_entry(cache, &dev->cache_props, list) { 657 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 658 if (!cache->kobj) 659 return -ENOMEM; 660 ret = kobject_init_and_add(cache->kobj, &cache_type, 661 dev->kobj_cache, "%d", i); 662 if (ret < 0) 663 return ret; 664 665 cache->attr.name = "properties"; 666 cache->attr.mode = KFD_SYSFS_FILE_MODE; 667 sysfs_attr_init(&cache->attr); 668 ret = sysfs_create_file(cache->kobj, &cache->attr); 669 if (ret < 0) 670 return ret; 671 i++; 672 } 673 674 i = 0; 675 list_for_each_entry(iolink, &dev->io_link_props, list) { 676 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 677 if (!iolink->kobj) 678 return -ENOMEM; 679 ret = kobject_init_and_add(iolink->kobj, &iolink_type, 680 dev->kobj_iolink, "%d", i); 681 if (ret < 0) 682 return ret; 683 684 iolink->attr.name = "properties"; 685 iolink->attr.mode = KFD_SYSFS_FILE_MODE; 686 sysfs_attr_init(&iolink->attr); 687 ret = sysfs_create_file(iolink->kobj, &iolink->attr); 688 if (ret < 0) 689 return ret; 690 i++; 691 } 692 693 /* All hardware blocks have the same number of attributes. */ 694 num_attrs = ARRAY_SIZE(perf_attr_iommu); 695 list_for_each_entry(perf, &dev->perf_props, list) { 696 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr) 697 * num_attrs + sizeof(struct attribute_group), 698 GFP_KERNEL); 699 if (!perf->attr_group) 700 return -ENOMEM; 701 702 attrs = (struct attribute **)(perf->attr_group + 1); 703 if (!strcmp(perf->block_name, "iommu")) { 704 /* Information of IOMMU's num_counters and counter_ids is shown 705 * under /sys/bus/event_source/devices/amd_iommu. We don't 706 * duplicate here. 707 */ 708 perf_attr_iommu[0].data = perf->max_concurrent; 709 for (i = 0; i < num_attrs; i++) 710 attrs[i] = &perf_attr_iommu[i].attr.attr; 711 } 712 perf->attr_group->name = perf->block_name; 713 perf->attr_group->attrs = attrs; 714 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group); 715 if (ret < 0) 716 return ret; 717 } 718 719 return 0; 720 } 721 722 /* Called with write topology lock acquired */ 723 static int kfd_build_sysfs_node_tree(void) 724 { 725 struct kfd_topology_device *dev; 726 int ret; 727 uint32_t i = 0; 728 729 list_for_each_entry(dev, &topology_device_list, list) { 730 ret = kfd_build_sysfs_node_entry(dev, i); 731 if (ret < 0) 732 return ret; 733 i++; 734 } 735 736 return 0; 737 } 738 739 /* Called with write topology lock acquired */ 740 static void kfd_remove_sysfs_node_tree(void) 741 { 742 struct kfd_topology_device *dev; 743 744 list_for_each_entry(dev, &topology_device_list, list) 745 kfd_remove_sysfs_node_entry(dev); 746 } 747 748 static int kfd_topology_update_sysfs(void) 749 { 750 int ret; 751 752 pr_info("Creating topology SYSFS entries\n"); 753 if (!sys_props.kobj_topology) { 754 sys_props.kobj_topology = 755 kfd_alloc_struct(sys_props.kobj_topology); 756 if (!sys_props.kobj_topology) 757 return -ENOMEM; 758 759 ret = kobject_init_and_add(sys_props.kobj_topology, 760 &sysprops_type, &kfd_device->kobj, 761 "topology"); 762 if (ret < 0) 763 return ret; 764 765 sys_props.kobj_nodes = kobject_create_and_add("nodes", 766 sys_props.kobj_topology); 767 if (!sys_props.kobj_nodes) 768 return -ENOMEM; 769 770 sys_props.attr_genid.name = "generation_id"; 771 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE; 772 sysfs_attr_init(&sys_props.attr_genid); 773 ret = sysfs_create_file(sys_props.kobj_topology, 774 &sys_props.attr_genid); 775 if (ret < 0) 776 return ret; 777 778 sys_props.attr_props.name = "system_properties"; 779 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE; 780 sysfs_attr_init(&sys_props.attr_props); 781 ret = sysfs_create_file(sys_props.kobj_topology, 782 &sys_props.attr_props); 783 if (ret < 0) 784 return ret; 785 } 786 787 kfd_remove_sysfs_node_tree(); 788 789 return kfd_build_sysfs_node_tree(); 790 } 791 792 static void kfd_topology_release_sysfs(void) 793 { 794 kfd_remove_sysfs_node_tree(); 795 if (sys_props.kobj_topology) { 796 sysfs_remove_file(sys_props.kobj_topology, 797 &sys_props.attr_genid); 798 sysfs_remove_file(sys_props.kobj_topology, 799 &sys_props.attr_props); 800 if (sys_props.kobj_nodes) { 801 kobject_del(sys_props.kobj_nodes); 802 kobject_put(sys_props.kobj_nodes); 803 sys_props.kobj_nodes = NULL; 804 } 805 kobject_del(sys_props.kobj_topology); 806 kobject_put(sys_props.kobj_topology); 807 sys_props.kobj_topology = NULL; 808 } 809 } 810 811 /* Called with write topology_lock acquired */ 812 static void kfd_topology_update_device_list(struct list_head *temp_list, 813 struct list_head *master_list) 814 { 815 while (!list_empty(temp_list)) { 816 list_move_tail(temp_list->next, master_list); 817 sys_props.num_devices++; 818 } 819 } 820 821 static void kfd_debug_print_topology(void) 822 { 823 struct kfd_topology_device *dev; 824 825 down_read(&topology_lock); 826 827 dev = list_last_entry(&topology_device_list, 828 struct kfd_topology_device, list); 829 if (dev) { 830 if (dev->node_props.cpu_cores_count && 831 dev->node_props.simd_count) { 832 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n", 833 dev->node_props.device_id, 834 dev->node_props.vendor_id); 835 } else if (dev->node_props.cpu_cores_count) 836 pr_info("Topology: Add CPU node\n"); 837 else if (dev->node_props.simd_count) 838 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n", 839 dev->node_props.device_id, 840 dev->node_props.vendor_id); 841 } 842 up_read(&topology_lock); 843 } 844 845 /* Helper function for intializing platform_xx members of 846 * kfd_system_properties. Uses OEM info from the last CPU/APU node. 847 */ 848 static void kfd_update_system_properties(void) 849 { 850 struct kfd_topology_device *dev; 851 852 down_read(&topology_lock); 853 dev = list_last_entry(&topology_device_list, 854 struct kfd_topology_device, list); 855 if (dev) { 856 sys_props.platform_id = 857 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK; 858 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id); 859 sys_props.platform_rev = dev->oem_revision; 860 } 861 up_read(&topology_lock); 862 } 863 864 static void find_system_memory(const struct dmi_header *dm, 865 void *private) 866 { 867 struct kfd_mem_properties *mem; 868 u16 mem_width, mem_clock; 869 struct kfd_topology_device *kdev = 870 (struct kfd_topology_device *)private; 871 const u8 *dmi_data = (const u8 *)(dm + 1); 872 873 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) { 874 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6)); 875 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11)); 876 list_for_each_entry(mem, &kdev->mem_props, list) { 877 if (mem_width != 0xFFFF && mem_width != 0) 878 mem->width = mem_width; 879 if (mem_clock != 0) 880 mem->mem_clk_max = mem_clock; 881 } 882 } 883 } 884 885 /* 886 * Performance counters information is not part of CRAT but we would like to 887 * put them in the sysfs under topology directory for Thunk to get the data. 888 * This function is called before updating the sysfs. 889 */ 890 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev) 891 { 892 /* These are the only counters supported so far */ 893 return kfd_iommu_add_perf_counters(kdev); 894 } 895 896 /* kfd_add_non_crat_information - Add information that is not currently 897 * defined in CRAT but is necessary for KFD topology 898 * @dev - topology device to which addition info is added 899 */ 900 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev) 901 { 902 /* Check if CPU only node. */ 903 if (!kdev->gpu) { 904 /* Add system memory information */ 905 dmi_walk(find_system_memory, kdev); 906 } 907 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */ 908 } 909 910 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices. 911 * Ignore CRAT for all other devices. AMD APU is identified if both CPU 912 * and GPU cores are present. 913 * @device_list - topology device list created by parsing ACPI CRAT table. 914 * @return - TRUE if invalid, FALSE is valid. 915 */ 916 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list) 917 { 918 struct kfd_topology_device *dev; 919 920 list_for_each_entry(dev, device_list, list) { 921 if (dev->node_props.cpu_cores_count && 922 dev->node_props.simd_count) 923 return false; 924 } 925 pr_info("Ignoring ACPI CRAT on non-APU system\n"); 926 return true; 927 } 928 929 int kfd_topology_init(void) 930 { 931 void *crat_image = NULL; 932 size_t image_size = 0; 933 int ret; 934 struct list_head temp_topology_device_list; 935 int cpu_only_node = 0; 936 struct kfd_topology_device *kdev; 937 int proximity_domain; 938 939 /* topology_device_list - Master list of all topology devices 940 * temp_topology_device_list - temporary list created while parsing CRAT 941 * or VCRAT. Once parsing is complete the contents of list is moved to 942 * topology_device_list 943 */ 944 945 /* Initialize the head for the both the lists */ 946 INIT_LIST_HEAD(&topology_device_list); 947 INIT_LIST_HEAD(&temp_topology_device_list); 948 init_rwsem(&topology_lock); 949 950 memset(&sys_props, 0, sizeof(sys_props)); 951 952 /* Proximity domains in ACPI CRAT tables start counting at 953 * 0. The same should be true for virtual CRAT tables created 954 * at this stage. GPUs added later in kfd_topology_add_device 955 * use a counter. 956 */ 957 proximity_domain = 0; 958 959 /* 960 * Get the CRAT image from the ACPI. If ACPI doesn't have one 961 * or if ACPI CRAT is invalid create a virtual CRAT. 962 * NOTE: The current implementation expects all AMD APUs to have 963 * CRAT. If no CRAT is available, it is assumed to be a CPU 964 */ 965 ret = kfd_create_crat_image_acpi(&crat_image, &image_size); 966 if (!ret) { 967 ret = kfd_parse_crat_table(crat_image, 968 &temp_topology_device_list, 969 proximity_domain); 970 if (ret || 971 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) { 972 kfd_release_topology_device_list( 973 &temp_topology_device_list); 974 kfd_destroy_crat_image(crat_image); 975 crat_image = NULL; 976 } 977 } 978 979 if (!crat_image) { 980 ret = kfd_create_crat_image_virtual(&crat_image, &image_size, 981 COMPUTE_UNIT_CPU, NULL, 982 proximity_domain); 983 cpu_only_node = 1; 984 if (ret) { 985 pr_err("Error creating VCRAT table for CPU\n"); 986 return ret; 987 } 988 989 ret = kfd_parse_crat_table(crat_image, 990 &temp_topology_device_list, 991 proximity_domain); 992 if (ret) { 993 pr_err("Error parsing VCRAT table for CPU\n"); 994 goto err; 995 } 996 } 997 998 kdev = list_first_entry(&temp_topology_device_list, 999 struct kfd_topology_device, list); 1000 kfd_add_perf_to_topology(kdev); 1001 1002 down_write(&topology_lock); 1003 kfd_topology_update_device_list(&temp_topology_device_list, 1004 &topology_device_list); 1005 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1); 1006 ret = kfd_topology_update_sysfs(); 1007 up_write(&topology_lock); 1008 1009 if (!ret) { 1010 sys_props.generation_count++; 1011 kfd_update_system_properties(); 1012 kfd_debug_print_topology(); 1013 pr_info("Finished initializing topology\n"); 1014 } else 1015 pr_err("Failed to update topology in sysfs ret=%d\n", ret); 1016 1017 /* For nodes with GPU, this information gets added 1018 * when GPU is detected (kfd_topology_add_device). 1019 */ 1020 if (cpu_only_node) { 1021 /* Add additional information to CPU only node created above */ 1022 down_write(&topology_lock); 1023 kdev = list_first_entry(&topology_device_list, 1024 struct kfd_topology_device, list); 1025 up_write(&topology_lock); 1026 kfd_add_non_crat_information(kdev); 1027 } 1028 1029 err: 1030 kfd_destroy_crat_image(crat_image); 1031 return ret; 1032 } 1033 1034 void kfd_topology_shutdown(void) 1035 { 1036 down_write(&topology_lock); 1037 kfd_topology_release_sysfs(); 1038 kfd_release_live_view(); 1039 up_write(&topology_lock); 1040 } 1041 1042 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu) 1043 { 1044 uint32_t hashout; 1045 uint32_t buf[7]; 1046 uint64_t local_mem_size; 1047 int i; 1048 struct kfd_local_mem_info local_mem_info; 1049 1050 if (!gpu) 1051 return 0; 1052 1053 gpu->kfd2kgd->get_local_mem_info(gpu->kgd, &local_mem_info); 1054 1055 local_mem_size = local_mem_info.local_mem_size_private + 1056 local_mem_info.local_mem_size_public; 1057 1058 buf[0] = gpu->pdev->devfn; 1059 buf[1] = gpu->pdev->subsystem_vendor; 1060 buf[2] = gpu->pdev->subsystem_device; 1061 buf[3] = gpu->pdev->device; 1062 buf[4] = gpu->pdev->bus->number; 1063 buf[5] = lower_32_bits(local_mem_size); 1064 buf[6] = upper_32_bits(local_mem_size); 1065 1066 for (i = 0, hashout = 0; i < 7; i++) 1067 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH); 1068 1069 return hashout; 1070 } 1071 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If 1072 * the GPU device is not already present in the topology device 1073 * list then return NULL. This means a new topology device has to 1074 * be created for this GPU. 1075 */ 1076 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) 1077 { 1078 struct kfd_topology_device *dev; 1079 struct kfd_topology_device *out_dev = NULL; 1080 1081 down_write(&topology_lock); 1082 list_for_each_entry(dev, &topology_device_list, list) { 1083 /* Discrete GPUs need their own topology device list 1084 * entries. Don't assign them to CPU/APU nodes. 1085 */ 1086 if (!gpu->device_info->needs_iommu_device && 1087 dev->node_props.cpu_cores_count) 1088 continue; 1089 1090 if (!dev->gpu && (dev->node_props.simd_count > 0)) { 1091 dev->gpu = gpu; 1092 out_dev = dev; 1093 break; 1094 } 1095 } 1096 up_write(&topology_lock); 1097 return out_dev; 1098 } 1099 1100 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival) 1101 { 1102 /* 1103 * TODO: Generate an event for thunk about the arrival/removal 1104 * of the GPU 1105 */ 1106 } 1107 1108 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info, 1109 * patch this after CRAT parsing. 1110 */ 1111 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev) 1112 { 1113 struct kfd_mem_properties *mem; 1114 struct kfd_local_mem_info local_mem_info; 1115 1116 if (!dev) 1117 return; 1118 1119 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with 1120 * single bank of VRAM local memory. 1121 * for dGPUs - VCRAT reports only one bank of Local Memory 1122 * for APUs - If CRAT from ACPI reports more than one bank, then 1123 * all the banks will report the same mem_clk_max information 1124 */ 1125 dev->gpu->kfd2kgd->get_local_mem_info(dev->gpu->kgd, 1126 &local_mem_info); 1127 1128 list_for_each_entry(mem, &dev->mem_props, list) 1129 mem->mem_clk_max = local_mem_info.mem_clk_max; 1130 } 1131 1132 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev) 1133 { 1134 struct kfd_iolink_properties *link; 1135 1136 if (!dev || !dev->gpu) 1137 return; 1138 1139 /* GPU only creates direck links so apply flags setting to all */ 1140 if (dev->gpu->device_info->asic_family == CHIP_HAWAII) 1141 list_for_each_entry(link, &dev->io_link_props, list) 1142 link->flags = CRAT_IOLINK_FLAGS_ENABLED | 1143 CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1144 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1145 } 1146 1147 int kfd_topology_add_device(struct kfd_dev *gpu) 1148 { 1149 uint32_t gpu_id; 1150 struct kfd_topology_device *dev; 1151 struct kfd_cu_info cu_info; 1152 int res = 0; 1153 struct list_head temp_topology_device_list; 1154 void *crat_image = NULL; 1155 size_t image_size = 0; 1156 int proximity_domain; 1157 1158 INIT_LIST_HEAD(&temp_topology_device_list); 1159 1160 gpu_id = kfd_generate_gpu_id(gpu); 1161 1162 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id); 1163 1164 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain); 1165 1166 /* Check to see if this gpu device exists in the topology_device_list. 1167 * If so, assign the gpu to that device, 1168 * else create a Virtual CRAT for this gpu device and then parse that 1169 * CRAT to create a new topology device. Once created assign the gpu to 1170 * that topology device 1171 */ 1172 dev = kfd_assign_gpu(gpu); 1173 if (!dev) { 1174 res = kfd_create_crat_image_virtual(&crat_image, &image_size, 1175 COMPUTE_UNIT_GPU, gpu, 1176 proximity_domain); 1177 if (res) { 1178 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n", 1179 gpu_id); 1180 return res; 1181 } 1182 res = kfd_parse_crat_table(crat_image, 1183 &temp_topology_device_list, 1184 proximity_domain); 1185 if (res) { 1186 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n", 1187 gpu_id); 1188 goto err; 1189 } 1190 1191 down_write(&topology_lock); 1192 kfd_topology_update_device_list(&temp_topology_device_list, 1193 &topology_device_list); 1194 1195 /* Update the SYSFS tree, since we added another topology 1196 * device 1197 */ 1198 res = kfd_topology_update_sysfs(); 1199 up_write(&topology_lock); 1200 1201 if (!res) 1202 sys_props.generation_count++; 1203 else 1204 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n", 1205 gpu_id, res); 1206 dev = kfd_assign_gpu(gpu); 1207 if (WARN_ON(!dev)) { 1208 res = -ENODEV; 1209 goto err; 1210 } 1211 } 1212 1213 dev->gpu_id = gpu_id; 1214 gpu->id = gpu_id; 1215 1216 /* TODO: Move the following lines to function 1217 * kfd_add_non_crat_information 1218 */ 1219 1220 /* Fill-in additional information that is not available in CRAT but 1221 * needed for the topology 1222 */ 1223 1224 dev->gpu->kfd2kgd->get_cu_info(dev->gpu->kgd, &cu_info); 1225 dev->node_props.simd_arrays_per_engine = 1226 cu_info.num_shader_arrays_per_engine; 1227 1228 dev->node_props.vendor_id = gpu->pdev->vendor; 1229 dev->node_props.device_id = gpu->pdev->device; 1230 dev->node_props.location_id = PCI_DEVID(gpu->pdev->bus->number, 1231 gpu->pdev->devfn); 1232 dev->node_props.max_engine_clk_fcompute = 1233 dev->gpu->kfd2kgd->get_max_engine_clock_in_mhz(dev->gpu->kgd); 1234 dev->node_props.max_engine_clk_ccompute = 1235 cpufreq_quick_get_max(0) / 1000; 1236 dev->node_props.drm_render_minor = 1237 gpu->shared_resources.drm_render_minor; 1238 1239 kfd_fill_mem_clk_max_info(dev); 1240 kfd_fill_iolink_non_crat_info(dev); 1241 1242 switch (dev->gpu->device_info->asic_family) { 1243 case CHIP_KAVERI: 1244 case CHIP_HAWAII: 1245 case CHIP_TONGA: 1246 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 << 1247 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1248 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1249 break; 1250 case CHIP_CARRIZO: 1251 case CHIP_FIJI: 1252 case CHIP_POLARIS10: 1253 case CHIP_POLARIS11: 1254 pr_debug("Adding doorbell packet type capability\n"); 1255 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 << 1256 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1257 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1258 break; 1259 case CHIP_VEGA10: 1260 case CHIP_RAVEN: 1261 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 << 1262 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1263 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1264 break; 1265 default: 1266 WARN(1, "Unexpected ASIC family %u", 1267 dev->gpu->device_info->asic_family); 1268 } 1269 1270 /* Fix errors in CZ CRAT. 1271 * simd_count: Carrizo CRAT reports wrong simd_count, probably 1272 * because it doesn't consider masked out CUs 1273 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd 1274 * capability flag: Carrizo CRAT doesn't report IOMMU flags 1275 */ 1276 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) { 1277 dev->node_props.simd_count = 1278 cu_info.simd_per_cu * cu_info.cu_active_number; 1279 dev->node_props.max_waves_per_simd = 10; 1280 dev->node_props.capability |= HSA_CAP_ATS_PRESENT; 1281 } 1282 1283 kfd_debug_print_topology(); 1284 1285 if (!res) 1286 kfd_notify_gpu_change(gpu_id, 1); 1287 err: 1288 kfd_destroy_crat_image(crat_image); 1289 return res; 1290 } 1291 1292 int kfd_topology_remove_device(struct kfd_dev *gpu) 1293 { 1294 struct kfd_topology_device *dev, *tmp; 1295 uint32_t gpu_id; 1296 int res = -ENODEV; 1297 1298 down_write(&topology_lock); 1299 1300 list_for_each_entry_safe(dev, tmp, &topology_device_list, list) 1301 if (dev->gpu == gpu) { 1302 gpu_id = dev->gpu_id; 1303 kfd_remove_sysfs_node_entry(dev); 1304 kfd_release_topology_device(dev); 1305 sys_props.num_devices--; 1306 res = 0; 1307 if (kfd_topology_update_sysfs() < 0) 1308 kfd_topology_release_sysfs(); 1309 break; 1310 } 1311 1312 up_write(&topology_lock); 1313 1314 if (!res) 1315 kfd_notify_gpu_change(gpu_id, 0); 1316 1317 return res; 1318 } 1319 1320 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD 1321 * topology. If GPU device is found @idx, then valid kfd_dev pointer is 1322 * returned through @kdev 1323 * Return - 0: On success (@kdev will be NULL for non GPU nodes) 1324 * -1: If end of list 1325 */ 1326 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev) 1327 { 1328 1329 struct kfd_topology_device *top_dev; 1330 uint8_t device_idx = 0; 1331 1332 *kdev = NULL; 1333 down_read(&topology_lock); 1334 1335 list_for_each_entry(top_dev, &topology_device_list, list) { 1336 if (device_idx == idx) { 1337 *kdev = top_dev->gpu; 1338 up_read(&topology_lock); 1339 return 0; 1340 } 1341 1342 device_idx++; 1343 } 1344 1345 up_read(&topology_lock); 1346 1347 return -1; 1348 1349 } 1350 1351 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask) 1352 { 1353 const struct cpuinfo_x86 *cpuinfo; 1354 int first_cpu_of_numa_node; 1355 1356 if (!cpumask || cpumask == cpu_none_mask) 1357 return -1; 1358 first_cpu_of_numa_node = cpumask_first(cpumask); 1359 if (first_cpu_of_numa_node >= nr_cpu_ids) 1360 return -1; 1361 cpuinfo = &cpu_data(first_cpu_of_numa_node); 1362 1363 return cpuinfo->apicid; 1364 } 1365 1366 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor 1367 * of the given NUMA node (numa_node_id) 1368 * Return -1 on failure 1369 */ 1370 int kfd_numa_node_to_apic_id(int numa_node_id) 1371 { 1372 if (numa_node_id == -1) { 1373 pr_warn("Invalid NUMA Node. Use online CPU mask\n"); 1374 return kfd_cpumask_to_apic_id(cpu_online_mask); 1375 } 1376 return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id)); 1377 } 1378 1379 #if defined(CONFIG_DEBUG_FS) 1380 1381 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data) 1382 { 1383 struct kfd_topology_device *dev; 1384 unsigned int i = 0; 1385 int r = 0; 1386 1387 down_read(&topology_lock); 1388 1389 list_for_each_entry(dev, &topology_device_list, list) { 1390 if (!dev->gpu) { 1391 i++; 1392 continue; 1393 } 1394 1395 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1396 r = dqm_debugfs_hqds(m, dev->gpu->dqm); 1397 if (r) 1398 break; 1399 } 1400 1401 up_read(&topology_lock); 1402 1403 return r; 1404 } 1405 1406 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data) 1407 { 1408 struct kfd_topology_device *dev; 1409 unsigned int i = 0; 1410 int r = 0; 1411 1412 down_read(&topology_lock); 1413 1414 list_for_each_entry(dev, &topology_device_list, list) { 1415 if (!dev->gpu) { 1416 i++; 1417 continue; 1418 } 1419 1420 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1421 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets); 1422 if (r) 1423 break; 1424 } 1425 1426 up_read(&topology_lock); 1427 1428 return r; 1429 } 1430 1431 #endif 1432