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 #include "amdgpu_ras.h" 41 42 /* topology_device_list - Master list of all topology devices */ 43 static struct list_head topology_device_list; 44 static struct kfd_system_properties sys_props; 45 46 static DECLARE_RWSEM(topology_lock); 47 static atomic_t topology_crat_proximity_domain; 48 49 struct kfd_topology_device *kfd_topology_device_by_proximity_domain( 50 uint32_t proximity_domain) 51 { 52 struct kfd_topology_device *top_dev; 53 struct kfd_topology_device *device = NULL; 54 55 down_read(&topology_lock); 56 57 list_for_each_entry(top_dev, &topology_device_list, list) 58 if (top_dev->proximity_domain == proximity_domain) { 59 device = top_dev; 60 break; 61 } 62 63 up_read(&topology_lock); 64 65 return device; 66 } 67 68 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id) 69 { 70 struct kfd_topology_device *top_dev = NULL; 71 struct kfd_topology_device *ret = NULL; 72 73 down_read(&topology_lock); 74 75 list_for_each_entry(top_dev, &topology_device_list, list) 76 if (top_dev->gpu_id == gpu_id) { 77 ret = top_dev; 78 break; 79 } 80 81 up_read(&topology_lock); 82 83 return ret; 84 } 85 86 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id) 87 { 88 struct kfd_topology_device *top_dev; 89 90 top_dev = kfd_topology_device_by_id(gpu_id); 91 if (!top_dev) 92 return NULL; 93 94 return top_dev->gpu; 95 } 96 97 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev) 98 { 99 struct kfd_topology_device *top_dev; 100 struct kfd_dev *device = NULL; 101 102 down_read(&topology_lock); 103 104 list_for_each_entry(top_dev, &topology_device_list, list) 105 if (top_dev->gpu && top_dev->gpu->pdev == pdev) { 106 device = top_dev->gpu; 107 break; 108 } 109 110 up_read(&topology_lock); 111 112 return device; 113 } 114 115 struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd) 116 { 117 struct kfd_topology_device *top_dev; 118 struct kfd_dev *device = NULL; 119 120 down_read(&topology_lock); 121 122 list_for_each_entry(top_dev, &topology_device_list, list) 123 if (top_dev->gpu && top_dev->gpu->kgd == kgd) { 124 device = top_dev->gpu; 125 break; 126 } 127 128 up_read(&topology_lock); 129 130 return device; 131 } 132 133 /* Called with write topology_lock acquired */ 134 static void kfd_release_topology_device(struct kfd_topology_device *dev) 135 { 136 struct kfd_mem_properties *mem; 137 struct kfd_cache_properties *cache; 138 struct kfd_iolink_properties *iolink; 139 struct kfd_perf_properties *perf; 140 141 list_del(&dev->list); 142 143 while (dev->mem_props.next != &dev->mem_props) { 144 mem = container_of(dev->mem_props.next, 145 struct kfd_mem_properties, list); 146 list_del(&mem->list); 147 kfree(mem); 148 } 149 150 while (dev->cache_props.next != &dev->cache_props) { 151 cache = container_of(dev->cache_props.next, 152 struct kfd_cache_properties, list); 153 list_del(&cache->list); 154 kfree(cache); 155 } 156 157 while (dev->io_link_props.next != &dev->io_link_props) { 158 iolink = container_of(dev->io_link_props.next, 159 struct kfd_iolink_properties, list); 160 list_del(&iolink->list); 161 kfree(iolink); 162 } 163 164 while (dev->perf_props.next != &dev->perf_props) { 165 perf = container_of(dev->perf_props.next, 166 struct kfd_perf_properties, list); 167 list_del(&perf->list); 168 kfree(perf); 169 } 170 171 kfree(dev); 172 } 173 174 void kfd_release_topology_device_list(struct list_head *device_list) 175 { 176 struct kfd_topology_device *dev; 177 178 while (!list_empty(device_list)) { 179 dev = list_first_entry(device_list, 180 struct kfd_topology_device, list); 181 kfd_release_topology_device(dev); 182 } 183 } 184 185 static void kfd_release_live_view(void) 186 { 187 kfd_release_topology_device_list(&topology_device_list); 188 memset(&sys_props, 0, sizeof(sys_props)); 189 } 190 191 struct kfd_topology_device *kfd_create_topology_device( 192 struct list_head *device_list) 193 { 194 struct kfd_topology_device *dev; 195 196 dev = kfd_alloc_struct(dev); 197 if (!dev) { 198 pr_err("No memory to allocate a topology device"); 199 return NULL; 200 } 201 202 INIT_LIST_HEAD(&dev->mem_props); 203 INIT_LIST_HEAD(&dev->cache_props); 204 INIT_LIST_HEAD(&dev->io_link_props); 205 INIT_LIST_HEAD(&dev->perf_props); 206 207 list_add_tail(&dev->list, device_list); 208 209 return dev; 210 } 211 212 213 #define sysfs_show_gen_prop(buffer, offs, fmt, ...) \ 214 (offs += snprintf(buffer+offs, PAGE_SIZE-offs, \ 215 fmt, __VA_ARGS__)) 216 #define sysfs_show_32bit_prop(buffer, offs, name, value) \ 217 sysfs_show_gen_prop(buffer, offs, "%s %u\n", name, value) 218 #define sysfs_show_64bit_prop(buffer, offs, name, value) \ 219 sysfs_show_gen_prop(buffer, offs, "%s %llu\n", name, value) 220 #define sysfs_show_32bit_val(buffer, offs, value) \ 221 sysfs_show_gen_prop(buffer, offs, "%u\n", value) 222 #define sysfs_show_str_val(buffer, offs, value) \ 223 sysfs_show_gen_prop(buffer, offs, "%s\n", value) 224 225 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr, 226 char *buffer) 227 { 228 int offs = 0; 229 230 /* Making sure that the buffer is an empty string */ 231 buffer[0] = 0; 232 233 if (attr == &sys_props.attr_genid) { 234 sysfs_show_32bit_val(buffer, offs, 235 sys_props.generation_count); 236 } else if (attr == &sys_props.attr_props) { 237 sysfs_show_64bit_prop(buffer, offs, "platform_oem", 238 sys_props.platform_oem); 239 sysfs_show_64bit_prop(buffer, offs, "platform_id", 240 sys_props.platform_id); 241 sysfs_show_64bit_prop(buffer, offs, "platform_rev", 242 sys_props.platform_rev); 243 } else { 244 offs = -EINVAL; 245 } 246 247 return offs; 248 } 249 250 static void kfd_topology_kobj_release(struct kobject *kobj) 251 { 252 kfree(kobj); 253 } 254 255 static const struct sysfs_ops sysprops_ops = { 256 .show = sysprops_show, 257 }; 258 259 static struct kobj_type sysprops_type = { 260 .release = kfd_topology_kobj_release, 261 .sysfs_ops = &sysprops_ops, 262 }; 263 264 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr, 265 char *buffer) 266 { 267 int offs = 0; 268 struct kfd_iolink_properties *iolink; 269 270 /* Making sure that the buffer is an empty string */ 271 buffer[0] = 0; 272 273 iolink = container_of(attr, struct kfd_iolink_properties, attr); 274 if (iolink->gpu && kfd_devcgroup_check_permission(iolink->gpu)) 275 return -EPERM; 276 sysfs_show_32bit_prop(buffer, offs, "type", iolink->iolink_type); 277 sysfs_show_32bit_prop(buffer, offs, "version_major", iolink->ver_maj); 278 sysfs_show_32bit_prop(buffer, offs, "version_minor", iolink->ver_min); 279 sysfs_show_32bit_prop(buffer, offs, "node_from", iolink->node_from); 280 sysfs_show_32bit_prop(buffer, offs, "node_to", iolink->node_to); 281 sysfs_show_32bit_prop(buffer, offs, "weight", iolink->weight); 282 sysfs_show_32bit_prop(buffer, offs, "min_latency", iolink->min_latency); 283 sysfs_show_32bit_prop(buffer, offs, "max_latency", iolink->max_latency); 284 sysfs_show_32bit_prop(buffer, offs, "min_bandwidth", 285 iolink->min_bandwidth); 286 sysfs_show_32bit_prop(buffer, offs, "max_bandwidth", 287 iolink->max_bandwidth); 288 sysfs_show_32bit_prop(buffer, offs, "recommended_transfer_size", 289 iolink->rec_transfer_size); 290 sysfs_show_32bit_prop(buffer, offs, "flags", iolink->flags); 291 292 return offs; 293 } 294 295 static const struct sysfs_ops iolink_ops = { 296 .show = iolink_show, 297 }; 298 299 static struct kobj_type iolink_type = { 300 .release = kfd_topology_kobj_release, 301 .sysfs_ops = &iolink_ops, 302 }; 303 304 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr, 305 char *buffer) 306 { 307 int offs = 0; 308 struct kfd_mem_properties *mem; 309 310 /* Making sure that the buffer is an empty string */ 311 buffer[0] = 0; 312 313 mem = container_of(attr, struct kfd_mem_properties, attr); 314 if (mem->gpu && kfd_devcgroup_check_permission(mem->gpu)) 315 return -EPERM; 316 sysfs_show_32bit_prop(buffer, offs, "heap_type", mem->heap_type); 317 sysfs_show_64bit_prop(buffer, offs, "size_in_bytes", 318 mem->size_in_bytes); 319 sysfs_show_32bit_prop(buffer, offs, "flags", mem->flags); 320 sysfs_show_32bit_prop(buffer, offs, "width", mem->width); 321 sysfs_show_32bit_prop(buffer, offs, "mem_clk_max", 322 mem->mem_clk_max); 323 324 return offs; 325 } 326 327 static const struct sysfs_ops mem_ops = { 328 .show = mem_show, 329 }; 330 331 static struct kobj_type mem_type = { 332 .release = kfd_topology_kobj_release, 333 .sysfs_ops = &mem_ops, 334 }; 335 336 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr, 337 char *buffer) 338 { 339 int offs = 0; 340 uint32_t i, j; 341 struct kfd_cache_properties *cache; 342 343 /* Making sure that the buffer is an empty string */ 344 buffer[0] = 0; 345 346 cache = container_of(attr, struct kfd_cache_properties, attr); 347 if (cache->gpu && kfd_devcgroup_check_permission(cache->gpu)) 348 return -EPERM; 349 sysfs_show_32bit_prop(buffer, offs, "processor_id_low", 350 cache->processor_id_low); 351 sysfs_show_32bit_prop(buffer, offs, "level", cache->cache_level); 352 sysfs_show_32bit_prop(buffer, offs, "size", cache->cache_size); 353 sysfs_show_32bit_prop(buffer, offs, "cache_line_size", 354 cache->cacheline_size); 355 sysfs_show_32bit_prop(buffer, offs, "cache_lines_per_tag", 356 cache->cachelines_per_tag); 357 sysfs_show_32bit_prop(buffer, offs, "association", cache->cache_assoc); 358 sysfs_show_32bit_prop(buffer, offs, "latency", cache->cache_latency); 359 sysfs_show_32bit_prop(buffer, offs, "type", cache->cache_type); 360 offs += snprintf(buffer+offs, PAGE_SIZE-offs, "sibling_map "); 361 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++) 362 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) 363 /* Check each bit */ 364 offs += snprintf(buffer+offs, PAGE_SIZE-offs, "%d,", 365 (cache->sibling_map[i] >> j) & 1); 366 367 /* Replace the last "," with end of line */ 368 buffer[offs-1] = '\n'; 369 return offs; 370 } 371 372 static const struct sysfs_ops cache_ops = { 373 .show = kfd_cache_show, 374 }; 375 376 static struct kobj_type cache_type = { 377 .release = kfd_topology_kobj_release, 378 .sysfs_ops = &cache_ops, 379 }; 380 381 /****** Sysfs of Performance Counters ******/ 382 383 struct kfd_perf_attr { 384 struct kobj_attribute attr; 385 uint32_t data; 386 }; 387 388 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs, 389 char *buf) 390 { 391 int offs = 0; 392 struct kfd_perf_attr *attr; 393 394 buf[0] = 0; 395 attr = container_of(attrs, struct kfd_perf_attr, attr); 396 if (!attr->data) /* invalid data for PMC */ 397 return 0; 398 else 399 return sysfs_show_32bit_val(buf, offs, attr->data); 400 } 401 402 #define KFD_PERF_DESC(_name, _data) \ 403 { \ 404 .attr = __ATTR(_name, 0444, perf_show, NULL), \ 405 .data = _data, \ 406 } 407 408 static struct kfd_perf_attr perf_attr_iommu[] = { 409 KFD_PERF_DESC(max_concurrent, 0), 410 KFD_PERF_DESC(num_counters, 0), 411 KFD_PERF_DESC(counter_ids, 0), 412 }; 413 /****************************************/ 414 415 static ssize_t node_show(struct kobject *kobj, struct attribute *attr, 416 char *buffer) 417 { 418 int offs = 0; 419 struct kfd_topology_device *dev; 420 uint32_t log_max_watch_addr; 421 422 /* Making sure that the buffer is an empty string */ 423 buffer[0] = 0; 424 425 if (strcmp(attr->name, "gpu_id") == 0) { 426 dev = container_of(attr, struct kfd_topology_device, 427 attr_gpuid); 428 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu)) 429 return -EPERM; 430 return sysfs_show_32bit_val(buffer, offs, dev->gpu_id); 431 } 432 433 if (strcmp(attr->name, "name") == 0) { 434 dev = container_of(attr, struct kfd_topology_device, 435 attr_name); 436 437 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu)) 438 return -EPERM; 439 return sysfs_show_str_val(buffer, offs, dev->node_props.name); 440 } 441 442 dev = container_of(attr, struct kfd_topology_device, 443 attr_props); 444 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu)) 445 return -EPERM; 446 sysfs_show_32bit_prop(buffer, offs, "cpu_cores_count", 447 dev->node_props.cpu_cores_count); 448 sysfs_show_32bit_prop(buffer, offs, "simd_count", 449 dev->gpu ? dev->node_props.simd_count : 0); 450 sysfs_show_32bit_prop(buffer, offs, "mem_banks_count", 451 dev->node_props.mem_banks_count); 452 sysfs_show_32bit_prop(buffer, offs, "caches_count", 453 dev->node_props.caches_count); 454 sysfs_show_32bit_prop(buffer, offs, "io_links_count", 455 dev->node_props.io_links_count); 456 sysfs_show_32bit_prop(buffer, offs, "cpu_core_id_base", 457 dev->node_props.cpu_core_id_base); 458 sysfs_show_32bit_prop(buffer, offs, "simd_id_base", 459 dev->node_props.simd_id_base); 460 sysfs_show_32bit_prop(buffer, offs, "max_waves_per_simd", 461 dev->node_props.max_waves_per_simd); 462 sysfs_show_32bit_prop(buffer, offs, "lds_size_in_kb", 463 dev->node_props.lds_size_in_kb); 464 sysfs_show_32bit_prop(buffer, offs, "gds_size_in_kb", 465 dev->node_props.gds_size_in_kb); 466 sysfs_show_32bit_prop(buffer, offs, "num_gws", 467 dev->node_props.num_gws); 468 sysfs_show_32bit_prop(buffer, offs, "wave_front_size", 469 dev->node_props.wave_front_size); 470 sysfs_show_32bit_prop(buffer, offs, "array_count", 471 dev->node_props.array_count); 472 sysfs_show_32bit_prop(buffer, offs, "simd_arrays_per_engine", 473 dev->node_props.simd_arrays_per_engine); 474 sysfs_show_32bit_prop(buffer, offs, "cu_per_simd_array", 475 dev->node_props.cu_per_simd_array); 476 sysfs_show_32bit_prop(buffer, offs, "simd_per_cu", 477 dev->node_props.simd_per_cu); 478 sysfs_show_32bit_prop(buffer, offs, "max_slots_scratch_cu", 479 dev->node_props.max_slots_scratch_cu); 480 sysfs_show_32bit_prop(buffer, offs, "vendor_id", 481 dev->node_props.vendor_id); 482 sysfs_show_32bit_prop(buffer, offs, "device_id", 483 dev->node_props.device_id); 484 sysfs_show_32bit_prop(buffer, offs, "location_id", 485 dev->node_props.location_id); 486 sysfs_show_32bit_prop(buffer, offs, "domain", 487 dev->node_props.domain); 488 sysfs_show_32bit_prop(buffer, offs, "drm_render_minor", 489 dev->node_props.drm_render_minor); 490 sysfs_show_64bit_prop(buffer, offs, "hive_id", 491 dev->node_props.hive_id); 492 sysfs_show_32bit_prop(buffer, offs, "num_sdma_engines", 493 dev->node_props.num_sdma_engines); 494 sysfs_show_32bit_prop(buffer, offs, "num_sdma_xgmi_engines", 495 dev->node_props.num_sdma_xgmi_engines); 496 sysfs_show_32bit_prop(buffer, offs, "num_sdma_queues_per_engine", 497 dev->node_props.num_sdma_queues_per_engine); 498 sysfs_show_32bit_prop(buffer, offs, "num_cp_queues", 499 dev->node_props.num_cp_queues); 500 501 if (dev->gpu) { 502 log_max_watch_addr = 503 __ilog2_u32(dev->gpu->device_info->num_of_watch_points); 504 505 if (log_max_watch_addr) { 506 dev->node_props.capability |= 507 HSA_CAP_WATCH_POINTS_SUPPORTED; 508 509 dev->node_props.capability |= 510 ((log_max_watch_addr << 511 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) & 512 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK); 513 } 514 515 if (dev->gpu->device_info->asic_family == CHIP_TONGA) 516 dev->node_props.capability |= 517 HSA_CAP_AQL_QUEUE_DOUBLE_MAP; 518 519 sysfs_show_32bit_prop(buffer, offs, "max_engine_clk_fcompute", 520 dev->node_props.max_engine_clk_fcompute); 521 522 sysfs_show_64bit_prop(buffer, offs, "local_mem_size", 0ULL); 523 524 sysfs_show_32bit_prop(buffer, offs, "fw_version", 525 dev->gpu->mec_fw_version); 526 sysfs_show_32bit_prop(buffer, offs, "capability", 527 dev->node_props.capability); 528 sysfs_show_32bit_prop(buffer, offs, "sdma_fw_version", 529 dev->gpu->sdma_fw_version); 530 sysfs_show_64bit_prop(buffer, offs, "unique_id", 531 amdgpu_amdkfd_get_unique_id(dev->gpu->kgd)); 532 533 } 534 535 return sysfs_show_32bit_prop(buffer, offs, "max_engine_clk_ccompute", 536 cpufreq_quick_get_max(0)/1000); 537 } 538 539 static const struct sysfs_ops node_ops = { 540 .show = node_show, 541 }; 542 543 static struct kobj_type node_type = { 544 .release = kfd_topology_kobj_release, 545 .sysfs_ops = &node_ops, 546 }; 547 548 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr) 549 { 550 sysfs_remove_file(kobj, attr); 551 kobject_del(kobj); 552 kobject_put(kobj); 553 } 554 555 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev) 556 { 557 struct kfd_iolink_properties *iolink; 558 struct kfd_cache_properties *cache; 559 struct kfd_mem_properties *mem; 560 struct kfd_perf_properties *perf; 561 562 if (dev->kobj_iolink) { 563 list_for_each_entry(iolink, &dev->io_link_props, list) 564 if (iolink->kobj) { 565 kfd_remove_sysfs_file(iolink->kobj, 566 &iolink->attr); 567 iolink->kobj = NULL; 568 } 569 kobject_del(dev->kobj_iolink); 570 kobject_put(dev->kobj_iolink); 571 dev->kobj_iolink = NULL; 572 } 573 574 if (dev->kobj_cache) { 575 list_for_each_entry(cache, &dev->cache_props, list) 576 if (cache->kobj) { 577 kfd_remove_sysfs_file(cache->kobj, 578 &cache->attr); 579 cache->kobj = NULL; 580 } 581 kobject_del(dev->kobj_cache); 582 kobject_put(dev->kobj_cache); 583 dev->kobj_cache = NULL; 584 } 585 586 if (dev->kobj_mem) { 587 list_for_each_entry(mem, &dev->mem_props, list) 588 if (mem->kobj) { 589 kfd_remove_sysfs_file(mem->kobj, &mem->attr); 590 mem->kobj = NULL; 591 } 592 kobject_del(dev->kobj_mem); 593 kobject_put(dev->kobj_mem); 594 dev->kobj_mem = NULL; 595 } 596 597 if (dev->kobj_perf) { 598 list_for_each_entry(perf, &dev->perf_props, list) { 599 kfree(perf->attr_group); 600 perf->attr_group = NULL; 601 } 602 kobject_del(dev->kobj_perf); 603 kobject_put(dev->kobj_perf); 604 dev->kobj_perf = NULL; 605 } 606 607 if (dev->kobj_node) { 608 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid); 609 sysfs_remove_file(dev->kobj_node, &dev->attr_name); 610 sysfs_remove_file(dev->kobj_node, &dev->attr_props); 611 kobject_del(dev->kobj_node); 612 kobject_put(dev->kobj_node); 613 dev->kobj_node = NULL; 614 } 615 } 616 617 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev, 618 uint32_t id) 619 { 620 struct kfd_iolink_properties *iolink; 621 struct kfd_cache_properties *cache; 622 struct kfd_mem_properties *mem; 623 struct kfd_perf_properties *perf; 624 int ret; 625 uint32_t i, num_attrs; 626 struct attribute **attrs; 627 628 if (WARN_ON(dev->kobj_node)) 629 return -EEXIST; 630 631 /* 632 * Creating the sysfs folders 633 */ 634 dev->kobj_node = kfd_alloc_struct(dev->kobj_node); 635 if (!dev->kobj_node) 636 return -ENOMEM; 637 638 ret = kobject_init_and_add(dev->kobj_node, &node_type, 639 sys_props.kobj_nodes, "%d", id); 640 if (ret < 0) { 641 kobject_put(dev->kobj_node); 642 return ret; 643 } 644 645 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node); 646 if (!dev->kobj_mem) 647 return -ENOMEM; 648 649 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node); 650 if (!dev->kobj_cache) 651 return -ENOMEM; 652 653 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node); 654 if (!dev->kobj_iolink) 655 return -ENOMEM; 656 657 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node); 658 if (!dev->kobj_perf) 659 return -ENOMEM; 660 661 /* 662 * Creating sysfs files for node properties 663 */ 664 dev->attr_gpuid.name = "gpu_id"; 665 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE; 666 sysfs_attr_init(&dev->attr_gpuid); 667 dev->attr_name.name = "name"; 668 dev->attr_name.mode = KFD_SYSFS_FILE_MODE; 669 sysfs_attr_init(&dev->attr_name); 670 dev->attr_props.name = "properties"; 671 dev->attr_props.mode = KFD_SYSFS_FILE_MODE; 672 sysfs_attr_init(&dev->attr_props); 673 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid); 674 if (ret < 0) 675 return ret; 676 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name); 677 if (ret < 0) 678 return ret; 679 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props); 680 if (ret < 0) 681 return ret; 682 683 i = 0; 684 list_for_each_entry(mem, &dev->mem_props, list) { 685 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 686 if (!mem->kobj) 687 return -ENOMEM; 688 ret = kobject_init_and_add(mem->kobj, &mem_type, 689 dev->kobj_mem, "%d", i); 690 if (ret < 0) { 691 kobject_put(mem->kobj); 692 return ret; 693 } 694 695 mem->attr.name = "properties"; 696 mem->attr.mode = KFD_SYSFS_FILE_MODE; 697 sysfs_attr_init(&mem->attr); 698 ret = sysfs_create_file(mem->kobj, &mem->attr); 699 if (ret < 0) 700 return ret; 701 i++; 702 } 703 704 i = 0; 705 list_for_each_entry(cache, &dev->cache_props, list) { 706 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 707 if (!cache->kobj) 708 return -ENOMEM; 709 ret = kobject_init_and_add(cache->kobj, &cache_type, 710 dev->kobj_cache, "%d", i); 711 if (ret < 0) { 712 kobject_put(cache->kobj); 713 return ret; 714 } 715 716 cache->attr.name = "properties"; 717 cache->attr.mode = KFD_SYSFS_FILE_MODE; 718 sysfs_attr_init(&cache->attr); 719 ret = sysfs_create_file(cache->kobj, &cache->attr); 720 if (ret < 0) 721 return ret; 722 i++; 723 } 724 725 i = 0; 726 list_for_each_entry(iolink, &dev->io_link_props, list) { 727 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 728 if (!iolink->kobj) 729 return -ENOMEM; 730 ret = kobject_init_and_add(iolink->kobj, &iolink_type, 731 dev->kobj_iolink, "%d", i); 732 if (ret < 0) { 733 kobject_put(iolink->kobj); 734 return ret; 735 } 736 737 iolink->attr.name = "properties"; 738 iolink->attr.mode = KFD_SYSFS_FILE_MODE; 739 sysfs_attr_init(&iolink->attr); 740 ret = sysfs_create_file(iolink->kobj, &iolink->attr); 741 if (ret < 0) 742 return ret; 743 i++; 744 } 745 746 /* All hardware blocks have the same number of attributes. */ 747 num_attrs = ARRAY_SIZE(perf_attr_iommu); 748 list_for_each_entry(perf, &dev->perf_props, list) { 749 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr) 750 * num_attrs + sizeof(struct attribute_group), 751 GFP_KERNEL); 752 if (!perf->attr_group) 753 return -ENOMEM; 754 755 attrs = (struct attribute **)(perf->attr_group + 1); 756 if (!strcmp(perf->block_name, "iommu")) { 757 /* Information of IOMMU's num_counters and counter_ids is shown 758 * under /sys/bus/event_source/devices/amd_iommu. We don't 759 * duplicate here. 760 */ 761 perf_attr_iommu[0].data = perf->max_concurrent; 762 for (i = 0; i < num_attrs; i++) 763 attrs[i] = &perf_attr_iommu[i].attr.attr; 764 } 765 perf->attr_group->name = perf->block_name; 766 perf->attr_group->attrs = attrs; 767 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group); 768 if (ret < 0) 769 return ret; 770 } 771 772 return 0; 773 } 774 775 /* Called with write topology lock acquired */ 776 static int kfd_build_sysfs_node_tree(void) 777 { 778 struct kfd_topology_device *dev; 779 int ret; 780 uint32_t i = 0; 781 782 list_for_each_entry(dev, &topology_device_list, list) { 783 ret = kfd_build_sysfs_node_entry(dev, i); 784 if (ret < 0) 785 return ret; 786 i++; 787 } 788 789 return 0; 790 } 791 792 /* Called with write topology lock acquired */ 793 static void kfd_remove_sysfs_node_tree(void) 794 { 795 struct kfd_topology_device *dev; 796 797 list_for_each_entry(dev, &topology_device_list, list) 798 kfd_remove_sysfs_node_entry(dev); 799 } 800 801 static int kfd_topology_update_sysfs(void) 802 { 803 int ret; 804 805 if (!sys_props.kobj_topology) { 806 sys_props.kobj_topology = 807 kfd_alloc_struct(sys_props.kobj_topology); 808 if (!sys_props.kobj_topology) 809 return -ENOMEM; 810 811 ret = kobject_init_and_add(sys_props.kobj_topology, 812 &sysprops_type, &kfd_device->kobj, 813 "topology"); 814 if (ret < 0) { 815 kobject_put(sys_props.kobj_topology); 816 return ret; 817 } 818 819 sys_props.kobj_nodes = kobject_create_and_add("nodes", 820 sys_props.kobj_topology); 821 if (!sys_props.kobj_nodes) 822 return -ENOMEM; 823 824 sys_props.attr_genid.name = "generation_id"; 825 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE; 826 sysfs_attr_init(&sys_props.attr_genid); 827 ret = sysfs_create_file(sys_props.kobj_topology, 828 &sys_props.attr_genid); 829 if (ret < 0) 830 return ret; 831 832 sys_props.attr_props.name = "system_properties"; 833 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE; 834 sysfs_attr_init(&sys_props.attr_props); 835 ret = sysfs_create_file(sys_props.kobj_topology, 836 &sys_props.attr_props); 837 if (ret < 0) 838 return ret; 839 } 840 841 kfd_remove_sysfs_node_tree(); 842 843 return kfd_build_sysfs_node_tree(); 844 } 845 846 static void kfd_topology_release_sysfs(void) 847 { 848 kfd_remove_sysfs_node_tree(); 849 if (sys_props.kobj_topology) { 850 sysfs_remove_file(sys_props.kobj_topology, 851 &sys_props.attr_genid); 852 sysfs_remove_file(sys_props.kobj_topology, 853 &sys_props.attr_props); 854 if (sys_props.kobj_nodes) { 855 kobject_del(sys_props.kobj_nodes); 856 kobject_put(sys_props.kobj_nodes); 857 sys_props.kobj_nodes = NULL; 858 } 859 kobject_del(sys_props.kobj_topology); 860 kobject_put(sys_props.kobj_topology); 861 sys_props.kobj_topology = NULL; 862 } 863 } 864 865 /* Called with write topology_lock acquired */ 866 static void kfd_topology_update_device_list(struct list_head *temp_list, 867 struct list_head *master_list) 868 { 869 while (!list_empty(temp_list)) { 870 list_move_tail(temp_list->next, master_list); 871 sys_props.num_devices++; 872 } 873 } 874 875 static void kfd_debug_print_topology(void) 876 { 877 struct kfd_topology_device *dev; 878 879 down_read(&topology_lock); 880 881 dev = list_last_entry(&topology_device_list, 882 struct kfd_topology_device, list); 883 if (dev) { 884 if (dev->node_props.cpu_cores_count && 885 dev->node_props.simd_count) { 886 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n", 887 dev->node_props.device_id, 888 dev->node_props.vendor_id); 889 } else if (dev->node_props.cpu_cores_count) 890 pr_info("Topology: Add CPU node\n"); 891 else if (dev->node_props.simd_count) 892 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n", 893 dev->node_props.device_id, 894 dev->node_props.vendor_id); 895 } 896 up_read(&topology_lock); 897 } 898 899 /* Helper function for intializing platform_xx members of 900 * kfd_system_properties. Uses OEM info from the last CPU/APU node. 901 */ 902 static void kfd_update_system_properties(void) 903 { 904 struct kfd_topology_device *dev; 905 906 down_read(&topology_lock); 907 dev = list_last_entry(&topology_device_list, 908 struct kfd_topology_device, list); 909 if (dev) { 910 sys_props.platform_id = 911 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK; 912 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id); 913 sys_props.platform_rev = dev->oem_revision; 914 } 915 up_read(&topology_lock); 916 } 917 918 static void find_system_memory(const struct dmi_header *dm, 919 void *private) 920 { 921 struct kfd_mem_properties *mem; 922 u16 mem_width, mem_clock; 923 struct kfd_topology_device *kdev = 924 (struct kfd_topology_device *)private; 925 const u8 *dmi_data = (const u8 *)(dm + 1); 926 927 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) { 928 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6)); 929 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11)); 930 list_for_each_entry(mem, &kdev->mem_props, list) { 931 if (mem_width != 0xFFFF && mem_width != 0) 932 mem->width = mem_width; 933 if (mem_clock != 0) 934 mem->mem_clk_max = mem_clock; 935 } 936 } 937 } 938 939 /* 940 * Performance counters information is not part of CRAT but we would like to 941 * put them in the sysfs under topology directory for Thunk to get the data. 942 * This function is called before updating the sysfs. 943 */ 944 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev) 945 { 946 /* These are the only counters supported so far */ 947 return kfd_iommu_add_perf_counters(kdev); 948 } 949 950 /* kfd_add_non_crat_information - Add information that is not currently 951 * defined in CRAT but is necessary for KFD topology 952 * @dev - topology device to which addition info is added 953 */ 954 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev) 955 { 956 /* Check if CPU only node. */ 957 if (!kdev->gpu) { 958 /* Add system memory information */ 959 dmi_walk(find_system_memory, kdev); 960 } 961 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */ 962 } 963 964 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices. 965 * Ignore CRAT for all other devices. AMD APU is identified if both CPU 966 * and GPU cores are present. 967 * @device_list - topology device list created by parsing ACPI CRAT table. 968 * @return - TRUE if invalid, FALSE is valid. 969 */ 970 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list) 971 { 972 struct kfd_topology_device *dev; 973 974 list_for_each_entry(dev, device_list, list) { 975 if (dev->node_props.cpu_cores_count && 976 dev->node_props.simd_count) 977 return false; 978 } 979 pr_info("Ignoring ACPI CRAT on non-APU system\n"); 980 return true; 981 } 982 983 int kfd_topology_init(void) 984 { 985 void *crat_image = NULL; 986 size_t image_size = 0; 987 int ret; 988 struct list_head temp_topology_device_list; 989 int cpu_only_node = 0; 990 struct kfd_topology_device *kdev; 991 int proximity_domain; 992 993 /* topology_device_list - Master list of all topology devices 994 * temp_topology_device_list - temporary list created while parsing CRAT 995 * or VCRAT. Once parsing is complete the contents of list is moved to 996 * topology_device_list 997 */ 998 999 /* Initialize the head for the both the lists */ 1000 INIT_LIST_HEAD(&topology_device_list); 1001 INIT_LIST_HEAD(&temp_topology_device_list); 1002 init_rwsem(&topology_lock); 1003 1004 memset(&sys_props, 0, sizeof(sys_props)); 1005 1006 /* Proximity domains in ACPI CRAT tables start counting at 1007 * 0. The same should be true for virtual CRAT tables created 1008 * at this stage. GPUs added later in kfd_topology_add_device 1009 * use a counter. 1010 */ 1011 proximity_domain = 0; 1012 1013 /* 1014 * Get the CRAT image from the ACPI. If ACPI doesn't have one 1015 * or if ACPI CRAT is invalid create a virtual CRAT. 1016 * NOTE: The current implementation expects all AMD APUs to have 1017 * CRAT. If no CRAT is available, it is assumed to be a CPU 1018 */ 1019 ret = kfd_create_crat_image_acpi(&crat_image, &image_size); 1020 if (!ret) { 1021 ret = kfd_parse_crat_table(crat_image, 1022 &temp_topology_device_list, 1023 proximity_domain); 1024 if (ret || 1025 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) { 1026 kfd_release_topology_device_list( 1027 &temp_topology_device_list); 1028 kfd_destroy_crat_image(crat_image); 1029 crat_image = NULL; 1030 } 1031 } 1032 1033 if (!crat_image) { 1034 ret = kfd_create_crat_image_virtual(&crat_image, &image_size, 1035 COMPUTE_UNIT_CPU, NULL, 1036 proximity_domain); 1037 cpu_only_node = 1; 1038 if (ret) { 1039 pr_err("Error creating VCRAT table for CPU\n"); 1040 return ret; 1041 } 1042 1043 ret = kfd_parse_crat_table(crat_image, 1044 &temp_topology_device_list, 1045 proximity_domain); 1046 if (ret) { 1047 pr_err("Error parsing VCRAT table for CPU\n"); 1048 goto err; 1049 } 1050 } 1051 1052 kdev = list_first_entry(&temp_topology_device_list, 1053 struct kfd_topology_device, list); 1054 kfd_add_perf_to_topology(kdev); 1055 1056 down_write(&topology_lock); 1057 kfd_topology_update_device_list(&temp_topology_device_list, 1058 &topology_device_list); 1059 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1); 1060 ret = kfd_topology_update_sysfs(); 1061 up_write(&topology_lock); 1062 1063 if (!ret) { 1064 sys_props.generation_count++; 1065 kfd_update_system_properties(); 1066 kfd_debug_print_topology(); 1067 } else 1068 pr_err("Failed to update topology in sysfs ret=%d\n", ret); 1069 1070 /* For nodes with GPU, this information gets added 1071 * when GPU is detected (kfd_topology_add_device). 1072 */ 1073 if (cpu_only_node) { 1074 /* Add additional information to CPU only node created above */ 1075 down_write(&topology_lock); 1076 kdev = list_first_entry(&topology_device_list, 1077 struct kfd_topology_device, list); 1078 up_write(&topology_lock); 1079 kfd_add_non_crat_information(kdev); 1080 } 1081 1082 err: 1083 kfd_destroy_crat_image(crat_image); 1084 return ret; 1085 } 1086 1087 void kfd_topology_shutdown(void) 1088 { 1089 down_write(&topology_lock); 1090 kfd_topology_release_sysfs(); 1091 kfd_release_live_view(); 1092 up_write(&topology_lock); 1093 } 1094 1095 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu) 1096 { 1097 uint32_t hashout; 1098 uint32_t buf[7]; 1099 uint64_t local_mem_size; 1100 int i; 1101 struct kfd_local_mem_info local_mem_info; 1102 1103 if (!gpu) 1104 return 0; 1105 1106 amdgpu_amdkfd_get_local_mem_info(gpu->kgd, &local_mem_info); 1107 1108 local_mem_size = local_mem_info.local_mem_size_private + 1109 local_mem_info.local_mem_size_public; 1110 1111 buf[0] = gpu->pdev->devfn; 1112 buf[1] = gpu->pdev->subsystem_vendor | 1113 (gpu->pdev->subsystem_device << 16); 1114 buf[2] = pci_domain_nr(gpu->pdev->bus); 1115 buf[3] = gpu->pdev->device; 1116 buf[4] = gpu->pdev->bus->number; 1117 buf[5] = lower_32_bits(local_mem_size); 1118 buf[6] = upper_32_bits(local_mem_size); 1119 1120 for (i = 0, hashout = 0; i < 7; i++) 1121 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH); 1122 1123 return hashout; 1124 } 1125 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If 1126 * the GPU device is not already present in the topology device 1127 * list then return NULL. This means a new topology device has to 1128 * be created for this GPU. 1129 */ 1130 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) 1131 { 1132 struct kfd_topology_device *dev; 1133 struct kfd_topology_device *out_dev = NULL; 1134 struct kfd_mem_properties *mem; 1135 struct kfd_cache_properties *cache; 1136 struct kfd_iolink_properties *iolink; 1137 1138 down_write(&topology_lock); 1139 list_for_each_entry(dev, &topology_device_list, list) { 1140 /* Discrete GPUs need their own topology device list 1141 * entries. Don't assign them to CPU/APU nodes. 1142 */ 1143 if (!gpu->use_iommu_v2 && 1144 dev->node_props.cpu_cores_count) 1145 continue; 1146 1147 if (!dev->gpu && (dev->node_props.simd_count > 0)) { 1148 dev->gpu = gpu; 1149 out_dev = dev; 1150 1151 list_for_each_entry(mem, &dev->mem_props, list) 1152 mem->gpu = dev->gpu; 1153 list_for_each_entry(cache, &dev->cache_props, list) 1154 cache->gpu = dev->gpu; 1155 list_for_each_entry(iolink, &dev->io_link_props, list) 1156 iolink->gpu = dev->gpu; 1157 break; 1158 } 1159 } 1160 up_write(&topology_lock); 1161 return out_dev; 1162 } 1163 1164 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival) 1165 { 1166 /* 1167 * TODO: Generate an event for thunk about the arrival/removal 1168 * of the GPU 1169 */ 1170 } 1171 1172 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info, 1173 * patch this after CRAT parsing. 1174 */ 1175 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev) 1176 { 1177 struct kfd_mem_properties *mem; 1178 struct kfd_local_mem_info local_mem_info; 1179 1180 if (!dev) 1181 return; 1182 1183 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with 1184 * single bank of VRAM local memory. 1185 * for dGPUs - VCRAT reports only one bank of Local Memory 1186 * for APUs - If CRAT from ACPI reports more than one bank, then 1187 * all the banks will report the same mem_clk_max information 1188 */ 1189 amdgpu_amdkfd_get_local_mem_info(dev->gpu->kgd, &local_mem_info); 1190 1191 list_for_each_entry(mem, &dev->mem_props, list) 1192 mem->mem_clk_max = local_mem_info.mem_clk_max; 1193 } 1194 1195 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev) 1196 { 1197 struct kfd_iolink_properties *link, *cpu_link; 1198 struct kfd_topology_device *cpu_dev; 1199 uint32_t cap; 1200 uint32_t cpu_flag = CRAT_IOLINK_FLAGS_ENABLED; 1201 uint32_t flag = CRAT_IOLINK_FLAGS_ENABLED; 1202 1203 if (!dev || !dev->gpu) 1204 return; 1205 1206 pcie_capability_read_dword(dev->gpu->pdev, 1207 PCI_EXP_DEVCAP2, &cap); 1208 1209 if (!(cap & (PCI_EXP_DEVCAP2_ATOMIC_COMP32 | 1210 PCI_EXP_DEVCAP2_ATOMIC_COMP64))) 1211 cpu_flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1212 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1213 1214 if (!dev->gpu->pci_atomic_requested || 1215 dev->gpu->device_info->asic_family == CHIP_HAWAII) 1216 flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1217 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1218 1219 /* GPU only creates direct links so apply flags setting to all */ 1220 list_for_each_entry(link, &dev->io_link_props, list) { 1221 link->flags = flag; 1222 cpu_dev = kfd_topology_device_by_proximity_domain( 1223 link->node_to); 1224 if (cpu_dev) { 1225 list_for_each_entry(cpu_link, 1226 &cpu_dev->io_link_props, list) 1227 if (cpu_link->node_to == link->node_from) 1228 cpu_link->flags = cpu_flag; 1229 } 1230 } 1231 } 1232 1233 int kfd_topology_add_device(struct kfd_dev *gpu) 1234 { 1235 uint32_t gpu_id; 1236 struct kfd_topology_device *dev; 1237 struct kfd_cu_info cu_info; 1238 int res = 0; 1239 struct list_head temp_topology_device_list; 1240 void *crat_image = NULL; 1241 size_t image_size = 0; 1242 int proximity_domain; 1243 struct amdgpu_device *adev; 1244 1245 INIT_LIST_HEAD(&temp_topology_device_list); 1246 1247 gpu_id = kfd_generate_gpu_id(gpu); 1248 1249 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id); 1250 1251 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain); 1252 1253 /* Check to see if this gpu device exists in the topology_device_list. 1254 * If so, assign the gpu to that device, 1255 * else create a Virtual CRAT for this gpu device and then parse that 1256 * CRAT to create a new topology device. Once created assign the gpu to 1257 * that topology device 1258 */ 1259 dev = kfd_assign_gpu(gpu); 1260 if (!dev) { 1261 res = kfd_create_crat_image_virtual(&crat_image, &image_size, 1262 COMPUTE_UNIT_GPU, gpu, 1263 proximity_domain); 1264 if (res) { 1265 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n", 1266 gpu_id); 1267 return res; 1268 } 1269 res = kfd_parse_crat_table(crat_image, 1270 &temp_topology_device_list, 1271 proximity_domain); 1272 if (res) { 1273 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n", 1274 gpu_id); 1275 goto err; 1276 } 1277 1278 down_write(&topology_lock); 1279 kfd_topology_update_device_list(&temp_topology_device_list, 1280 &topology_device_list); 1281 1282 /* Update the SYSFS tree, since we added another topology 1283 * device 1284 */ 1285 res = kfd_topology_update_sysfs(); 1286 up_write(&topology_lock); 1287 1288 if (!res) 1289 sys_props.generation_count++; 1290 else 1291 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n", 1292 gpu_id, res); 1293 dev = kfd_assign_gpu(gpu); 1294 if (WARN_ON(!dev)) { 1295 res = -ENODEV; 1296 goto err; 1297 } 1298 } 1299 1300 dev->gpu_id = gpu_id; 1301 gpu->id = gpu_id; 1302 1303 /* TODO: Move the following lines to function 1304 * kfd_add_non_crat_information 1305 */ 1306 1307 /* Fill-in additional information that is not available in CRAT but 1308 * needed for the topology 1309 */ 1310 1311 amdgpu_amdkfd_get_cu_info(dev->gpu->kgd, &cu_info); 1312 1313 strncpy(dev->node_props.name, gpu->device_info->asic_name, 1314 KFD_TOPOLOGY_PUBLIC_NAME_SIZE); 1315 1316 dev->node_props.simd_arrays_per_engine = 1317 cu_info.num_shader_arrays_per_engine; 1318 1319 dev->node_props.vendor_id = gpu->pdev->vendor; 1320 dev->node_props.device_id = gpu->pdev->device; 1321 dev->node_props.capability |= 1322 ((amdgpu_amdkfd_get_asic_rev_id(dev->gpu->kgd) << 1323 HSA_CAP_ASIC_REVISION_SHIFT) & 1324 HSA_CAP_ASIC_REVISION_MASK); 1325 dev->node_props.location_id = pci_dev_id(gpu->pdev); 1326 dev->node_props.domain = pci_domain_nr(gpu->pdev->bus); 1327 dev->node_props.max_engine_clk_fcompute = 1328 amdgpu_amdkfd_get_max_engine_clock_in_mhz(dev->gpu->kgd); 1329 dev->node_props.max_engine_clk_ccompute = 1330 cpufreq_quick_get_max(0) / 1000; 1331 dev->node_props.drm_render_minor = 1332 gpu->shared_resources.drm_render_minor; 1333 1334 dev->node_props.hive_id = gpu->hive_id; 1335 dev->node_props.num_sdma_engines = gpu->device_info->num_sdma_engines; 1336 dev->node_props.num_sdma_xgmi_engines = 1337 gpu->device_info->num_xgmi_sdma_engines; 1338 dev->node_props.num_sdma_queues_per_engine = 1339 gpu->device_info->num_sdma_queues_per_engine; 1340 dev->node_props.num_gws = (dev->gpu->gws && 1341 dev->gpu->dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) ? 1342 amdgpu_amdkfd_get_num_gws(dev->gpu->kgd) : 0; 1343 dev->node_props.num_cp_queues = get_cp_queues_num(dev->gpu->dqm); 1344 1345 kfd_fill_mem_clk_max_info(dev); 1346 kfd_fill_iolink_non_crat_info(dev); 1347 1348 switch (dev->gpu->device_info->asic_family) { 1349 case CHIP_KAVERI: 1350 case CHIP_HAWAII: 1351 case CHIP_TONGA: 1352 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 << 1353 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1354 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1355 break; 1356 case CHIP_CARRIZO: 1357 case CHIP_FIJI: 1358 case CHIP_POLARIS10: 1359 case CHIP_POLARIS11: 1360 case CHIP_POLARIS12: 1361 case CHIP_VEGAM: 1362 pr_debug("Adding doorbell packet type capability\n"); 1363 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 << 1364 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1365 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1366 break; 1367 case CHIP_VEGA10: 1368 case CHIP_VEGA12: 1369 case CHIP_VEGA20: 1370 case CHIP_RAVEN: 1371 case CHIP_RENOIR: 1372 case CHIP_ARCTURUS: 1373 case CHIP_NAVI10: 1374 case CHIP_NAVI12: 1375 case CHIP_NAVI14: 1376 case CHIP_SIENNA_CICHLID: 1377 case CHIP_NAVY_FLOUNDER: 1378 case CHIP_VANGOGH: 1379 case CHIP_DIMGREY_CAVEFISH: 1380 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 << 1381 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1382 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1383 break; 1384 default: 1385 WARN(1, "Unexpected ASIC family %u", 1386 dev->gpu->device_info->asic_family); 1387 } 1388 1389 /* 1390 * Overwrite ATS capability according to needs_iommu_device to fix 1391 * potential missing corresponding bit in CRAT of BIOS. 1392 */ 1393 if (dev->gpu->use_iommu_v2) 1394 dev->node_props.capability |= HSA_CAP_ATS_PRESENT; 1395 else 1396 dev->node_props.capability &= ~HSA_CAP_ATS_PRESENT; 1397 1398 /* Fix errors in CZ CRAT. 1399 * simd_count: Carrizo CRAT reports wrong simd_count, probably 1400 * because it doesn't consider masked out CUs 1401 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd 1402 */ 1403 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) { 1404 dev->node_props.simd_count = 1405 cu_info.simd_per_cu * cu_info.cu_active_number; 1406 dev->node_props.max_waves_per_simd = 10; 1407 } 1408 1409 adev = (struct amdgpu_device *)(dev->gpu->kgd); 1410 /* kfd only concerns sram ecc on GFX and HBM ecc on UMC */ 1411 dev->node_props.capability |= 1412 ((adev->ras_features & BIT(AMDGPU_RAS_BLOCK__GFX)) != 0) ? 1413 HSA_CAP_SRAM_EDCSUPPORTED : 0; 1414 dev->node_props.capability |= ((adev->ras_features & BIT(AMDGPU_RAS_BLOCK__UMC)) != 0) ? 1415 HSA_CAP_MEM_EDCSUPPORTED : 0; 1416 1417 if (adev->asic_type != CHIP_VEGA10) 1418 dev->node_props.capability |= (adev->ras_features != 0) ? 1419 HSA_CAP_RASEVENTNOTIFY : 0; 1420 1421 kfd_debug_print_topology(); 1422 1423 if (!res) 1424 kfd_notify_gpu_change(gpu_id, 1); 1425 err: 1426 kfd_destroy_crat_image(crat_image); 1427 return res; 1428 } 1429 1430 int kfd_topology_remove_device(struct kfd_dev *gpu) 1431 { 1432 struct kfd_topology_device *dev, *tmp; 1433 uint32_t gpu_id; 1434 int res = -ENODEV; 1435 1436 down_write(&topology_lock); 1437 1438 list_for_each_entry_safe(dev, tmp, &topology_device_list, list) 1439 if (dev->gpu == gpu) { 1440 gpu_id = dev->gpu_id; 1441 kfd_remove_sysfs_node_entry(dev); 1442 kfd_release_topology_device(dev); 1443 sys_props.num_devices--; 1444 res = 0; 1445 if (kfd_topology_update_sysfs() < 0) 1446 kfd_topology_release_sysfs(); 1447 break; 1448 } 1449 1450 up_write(&topology_lock); 1451 1452 if (!res) 1453 kfd_notify_gpu_change(gpu_id, 0); 1454 1455 return res; 1456 } 1457 1458 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD 1459 * topology. If GPU device is found @idx, then valid kfd_dev pointer is 1460 * returned through @kdev 1461 * Return - 0: On success (@kdev will be NULL for non GPU nodes) 1462 * -1: If end of list 1463 */ 1464 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev) 1465 { 1466 1467 struct kfd_topology_device *top_dev; 1468 uint8_t device_idx = 0; 1469 1470 *kdev = NULL; 1471 down_read(&topology_lock); 1472 1473 list_for_each_entry(top_dev, &topology_device_list, list) { 1474 if (device_idx == idx) { 1475 *kdev = top_dev->gpu; 1476 up_read(&topology_lock); 1477 return 0; 1478 } 1479 1480 device_idx++; 1481 } 1482 1483 up_read(&topology_lock); 1484 1485 return -1; 1486 1487 } 1488 1489 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask) 1490 { 1491 int first_cpu_of_numa_node; 1492 1493 if (!cpumask || cpumask == cpu_none_mask) 1494 return -1; 1495 first_cpu_of_numa_node = cpumask_first(cpumask); 1496 if (first_cpu_of_numa_node >= nr_cpu_ids) 1497 return -1; 1498 #ifdef CONFIG_X86_64 1499 return cpu_data(first_cpu_of_numa_node).apicid; 1500 #else 1501 return first_cpu_of_numa_node; 1502 #endif 1503 } 1504 1505 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor 1506 * of the given NUMA node (numa_node_id) 1507 * Return -1 on failure 1508 */ 1509 int kfd_numa_node_to_apic_id(int numa_node_id) 1510 { 1511 if (numa_node_id == -1) { 1512 pr_warn("Invalid NUMA Node. Use online CPU mask\n"); 1513 return kfd_cpumask_to_apic_id(cpu_online_mask); 1514 } 1515 return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id)); 1516 } 1517 1518 void kfd_double_confirm_iommu_support(struct kfd_dev *gpu) 1519 { 1520 struct kfd_topology_device *dev; 1521 1522 gpu->use_iommu_v2 = false; 1523 1524 if (!gpu->device_info->needs_iommu_device) 1525 return; 1526 1527 down_read(&topology_lock); 1528 1529 /* Only use IOMMUv2 if there is an APU topology node with no GPU 1530 * assigned yet. This GPU will be assigned to it. 1531 */ 1532 list_for_each_entry(dev, &topology_device_list, list) 1533 if (dev->node_props.cpu_cores_count && 1534 dev->node_props.simd_count && 1535 !dev->gpu) 1536 gpu->use_iommu_v2 = true; 1537 1538 up_read(&topology_lock); 1539 } 1540 1541 #if defined(CONFIG_DEBUG_FS) 1542 1543 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data) 1544 { 1545 struct kfd_topology_device *dev; 1546 unsigned int i = 0; 1547 int r = 0; 1548 1549 down_read(&topology_lock); 1550 1551 list_for_each_entry(dev, &topology_device_list, list) { 1552 if (!dev->gpu) { 1553 i++; 1554 continue; 1555 } 1556 1557 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1558 r = dqm_debugfs_hqds(m, dev->gpu->dqm); 1559 if (r) 1560 break; 1561 } 1562 1563 up_read(&topology_lock); 1564 1565 return r; 1566 } 1567 1568 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data) 1569 { 1570 struct kfd_topology_device *dev; 1571 unsigned int i = 0; 1572 int r = 0; 1573 1574 down_read(&topology_lock); 1575 1576 list_for_each_entry(dev, &topology_device_list, list) { 1577 if (!dev->gpu) { 1578 i++; 1579 continue; 1580 } 1581 1582 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1583 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets); 1584 if (r) 1585 break; 1586 } 1587 1588 up_read(&topology_lock); 1589 1590 return r; 1591 } 1592 1593 #endif 1594