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 "kfd_svm.h" 40 #include "amdgpu_amdkfd.h" 41 #include "amdgpu_ras.h" 42 43 /* topology_device_list - Master list of all topology devices */ 44 static struct list_head topology_device_list; 45 static struct kfd_system_properties sys_props; 46 47 static DECLARE_RWSEM(topology_lock); 48 static atomic_t topology_crat_proximity_domain; 49 50 struct kfd_topology_device *kfd_topology_device_by_proximity_domain( 51 uint32_t proximity_domain) 52 { 53 struct kfd_topology_device *top_dev; 54 struct kfd_topology_device *device = NULL; 55 56 down_read(&topology_lock); 57 58 list_for_each_entry(top_dev, &topology_device_list, list) 59 if (top_dev->proximity_domain == proximity_domain) { 60 device = top_dev; 61 break; 62 } 63 64 up_read(&topology_lock); 65 66 return device; 67 } 68 69 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id) 70 { 71 struct kfd_topology_device *top_dev = NULL; 72 struct kfd_topology_device *ret = NULL; 73 74 down_read(&topology_lock); 75 76 list_for_each_entry(top_dev, &topology_device_list, list) 77 if (top_dev->gpu_id == gpu_id) { 78 ret = top_dev; 79 break; 80 } 81 82 up_read(&topology_lock); 83 84 return ret; 85 } 86 87 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id) 88 { 89 struct kfd_topology_device *top_dev; 90 91 top_dev = kfd_topology_device_by_id(gpu_id); 92 if (!top_dev) 93 return NULL; 94 95 return top_dev->gpu; 96 } 97 98 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev) 99 { 100 struct kfd_topology_device *top_dev; 101 struct kfd_dev *device = NULL; 102 103 down_read(&topology_lock); 104 105 list_for_each_entry(top_dev, &topology_device_list, list) 106 if (top_dev->gpu && top_dev->gpu->pdev == pdev) { 107 device = top_dev->gpu; 108 break; 109 } 110 111 up_read(&topology_lock); 112 113 return device; 114 } 115 116 struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd) 117 { 118 struct kfd_topology_device *top_dev; 119 struct kfd_dev *device = NULL; 120 121 down_read(&topology_lock); 122 123 list_for_each_entry(top_dev, &topology_device_list, list) 124 if (top_dev->gpu && top_dev->gpu->kgd == kgd) { 125 device = top_dev->gpu; 126 break; 127 } 128 129 up_read(&topology_lock); 130 131 return device; 132 } 133 134 /* Called with write topology_lock acquired */ 135 static void kfd_release_topology_device(struct kfd_topology_device *dev) 136 { 137 struct kfd_mem_properties *mem; 138 struct kfd_cache_properties *cache; 139 struct kfd_iolink_properties *iolink; 140 struct kfd_perf_properties *perf; 141 142 list_del(&dev->list); 143 144 while (dev->mem_props.next != &dev->mem_props) { 145 mem = container_of(dev->mem_props.next, 146 struct kfd_mem_properties, list); 147 list_del(&mem->list); 148 kfree(mem); 149 } 150 151 while (dev->cache_props.next != &dev->cache_props) { 152 cache = container_of(dev->cache_props.next, 153 struct kfd_cache_properties, list); 154 list_del(&cache->list); 155 kfree(cache); 156 } 157 158 while (dev->io_link_props.next != &dev->io_link_props) { 159 iolink = container_of(dev->io_link_props.next, 160 struct kfd_iolink_properties, list); 161 list_del(&iolink->list); 162 kfree(iolink); 163 } 164 165 while (dev->perf_props.next != &dev->perf_props) { 166 perf = container_of(dev->perf_props.next, 167 struct kfd_perf_properties, list); 168 list_del(&perf->list); 169 kfree(perf); 170 } 171 172 kfree(dev); 173 } 174 175 void kfd_release_topology_device_list(struct list_head *device_list) 176 { 177 struct kfd_topology_device *dev; 178 179 while (!list_empty(device_list)) { 180 dev = list_first_entry(device_list, 181 struct kfd_topology_device, list); 182 kfd_release_topology_device(dev); 183 } 184 } 185 186 static void kfd_release_live_view(void) 187 { 188 kfd_release_topology_device_list(&topology_device_list); 189 memset(&sys_props, 0, sizeof(sys_props)); 190 } 191 192 struct kfd_topology_device *kfd_create_topology_device( 193 struct list_head *device_list) 194 { 195 struct kfd_topology_device *dev; 196 197 dev = kfd_alloc_struct(dev); 198 if (!dev) { 199 pr_err("No memory to allocate a topology device"); 200 return NULL; 201 } 202 203 INIT_LIST_HEAD(&dev->mem_props); 204 INIT_LIST_HEAD(&dev->cache_props); 205 INIT_LIST_HEAD(&dev->io_link_props); 206 INIT_LIST_HEAD(&dev->perf_props); 207 208 list_add_tail(&dev->list, device_list); 209 210 return dev; 211 } 212 213 214 #define sysfs_show_gen_prop(buffer, offs, fmt, ...) \ 215 (offs += snprintf(buffer+offs, PAGE_SIZE-offs, \ 216 fmt, __VA_ARGS__)) 217 #define sysfs_show_32bit_prop(buffer, offs, name, value) \ 218 sysfs_show_gen_prop(buffer, offs, "%s %u\n", name, value) 219 #define sysfs_show_64bit_prop(buffer, offs, name, value) \ 220 sysfs_show_gen_prop(buffer, offs, "%s %llu\n", name, value) 221 #define sysfs_show_32bit_val(buffer, offs, value) \ 222 sysfs_show_gen_prop(buffer, offs, "%u\n", value) 223 #define sysfs_show_str_val(buffer, offs, value) \ 224 sysfs_show_gen_prop(buffer, offs, "%s\n", value) 225 226 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr, 227 char *buffer) 228 { 229 int offs = 0; 230 231 /* Making sure that the buffer is an empty string */ 232 buffer[0] = 0; 233 234 if (attr == &sys_props.attr_genid) { 235 sysfs_show_32bit_val(buffer, offs, 236 sys_props.generation_count); 237 } else if (attr == &sys_props.attr_props) { 238 sysfs_show_64bit_prop(buffer, offs, "platform_oem", 239 sys_props.platform_oem); 240 sysfs_show_64bit_prop(buffer, offs, "platform_id", 241 sys_props.platform_id); 242 sysfs_show_64bit_prop(buffer, offs, "platform_rev", 243 sys_props.platform_rev); 244 } else { 245 offs = -EINVAL; 246 } 247 248 return offs; 249 } 250 251 static void kfd_topology_kobj_release(struct kobject *kobj) 252 { 253 kfree(kobj); 254 } 255 256 static const struct sysfs_ops sysprops_ops = { 257 .show = sysprops_show, 258 }; 259 260 static struct kobj_type sysprops_type = { 261 .release = kfd_topology_kobj_release, 262 .sysfs_ops = &sysprops_ops, 263 }; 264 265 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr, 266 char *buffer) 267 { 268 int offs = 0; 269 struct kfd_iolink_properties *iolink; 270 271 /* Making sure that the buffer is an empty string */ 272 buffer[0] = 0; 273 274 iolink = container_of(attr, struct kfd_iolink_properties, attr); 275 if (iolink->gpu && kfd_devcgroup_check_permission(iolink->gpu)) 276 return -EPERM; 277 sysfs_show_32bit_prop(buffer, offs, "type", iolink->iolink_type); 278 sysfs_show_32bit_prop(buffer, offs, "version_major", iolink->ver_maj); 279 sysfs_show_32bit_prop(buffer, offs, "version_minor", iolink->ver_min); 280 sysfs_show_32bit_prop(buffer, offs, "node_from", iolink->node_from); 281 sysfs_show_32bit_prop(buffer, offs, "node_to", iolink->node_to); 282 sysfs_show_32bit_prop(buffer, offs, "weight", iolink->weight); 283 sysfs_show_32bit_prop(buffer, offs, "min_latency", iolink->min_latency); 284 sysfs_show_32bit_prop(buffer, offs, "max_latency", iolink->max_latency); 285 sysfs_show_32bit_prop(buffer, offs, "min_bandwidth", 286 iolink->min_bandwidth); 287 sysfs_show_32bit_prop(buffer, offs, "max_bandwidth", 288 iolink->max_bandwidth); 289 sysfs_show_32bit_prop(buffer, offs, "recommended_transfer_size", 290 iolink->rec_transfer_size); 291 sysfs_show_32bit_prop(buffer, offs, "flags", iolink->flags); 292 293 return offs; 294 } 295 296 static const struct sysfs_ops iolink_ops = { 297 .show = iolink_show, 298 }; 299 300 static struct kobj_type iolink_type = { 301 .release = kfd_topology_kobj_release, 302 .sysfs_ops = &iolink_ops, 303 }; 304 305 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr, 306 char *buffer) 307 { 308 int offs = 0; 309 struct kfd_mem_properties *mem; 310 311 /* Making sure that the buffer is an empty string */ 312 buffer[0] = 0; 313 314 mem = container_of(attr, struct kfd_mem_properties, attr); 315 if (mem->gpu && kfd_devcgroup_check_permission(mem->gpu)) 316 return -EPERM; 317 sysfs_show_32bit_prop(buffer, offs, "heap_type", mem->heap_type); 318 sysfs_show_64bit_prop(buffer, offs, "size_in_bytes", 319 mem->size_in_bytes); 320 sysfs_show_32bit_prop(buffer, offs, "flags", mem->flags); 321 sysfs_show_32bit_prop(buffer, offs, "width", mem->width); 322 sysfs_show_32bit_prop(buffer, offs, "mem_clk_max", 323 mem->mem_clk_max); 324 325 return offs; 326 } 327 328 static const struct sysfs_ops mem_ops = { 329 .show = mem_show, 330 }; 331 332 static struct kobj_type mem_type = { 333 .release = kfd_topology_kobj_release, 334 .sysfs_ops = &mem_ops, 335 }; 336 337 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr, 338 char *buffer) 339 { 340 int offs = 0; 341 uint32_t i, j; 342 struct kfd_cache_properties *cache; 343 344 /* Making sure that the buffer is an empty string */ 345 buffer[0] = 0; 346 347 cache = container_of(attr, struct kfd_cache_properties, attr); 348 if (cache->gpu && kfd_devcgroup_check_permission(cache->gpu)) 349 return -EPERM; 350 sysfs_show_32bit_prop(buffer, offs, "processor_id_low", 351 cache->processor_id_low); 352 sysfs_show_32bit_prop(buffer, offs, "level", cache->cache_level); 353 sysfs_show_32bit_prop(buffer, offs, "size", cache->cache_size); 354 sysfs_show_32bit_prop(buffer, offs, "cache_line_size", 355 cache->cacheline_size); 356 sysfs_show_32bit_prop(buffer, offs, "cache_lines_per_tag", 357 cache->cachelines_per_tag); 358 sysfs_show_32bit_prop(buffer, offs, "association", cache->cache_assoc); 359 sysfs_show_32bit_prop(buffer, offs, "latency", cache->cache_latency); 360 sysfs_show_32bit_prop(buffer, offs, "type", cache->cache_type); 361 offs += snprintf(buffer+offs, PAGE_SIZE-offs, "sibling_map "); 362 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++) 363 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) 364 /* Check each bit */ 365 offs += snprintf(buffer+offs, PAGE_SIZE-offs, "%d,", 366 (cache->sibling_map[i] >> j) & 1); 367 368 /* Replace the last "," with end of line */ 369 buffer[offs-1] = '\n'; 370 return offs; 371 } 372 373 static const struct sysfs_ops cache_ops = { 374 .show = kfd_cache_show, 375 }; 376 377 static struct kobj_type cache_type = { 378 .release = kfd_topology_kobj_release, 379 .sysfs_ops = &cache_ops, 380 }; 381 382 /****** Sysfs of Performance Counters ******/ 383 384 struct kfd_perf_attr { 385 struct kobj_attribute attr; 386 uint32_t data; 387 }; 388 389 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs, 390 char *buf) 391 { 392 int offs = 0; 393 struct kfd_perf_attr *attr; 394 395 buf[0] = 0; 396 attr = container_of(attrs, struct kfd_perf_attr, attr); 397 if (!attr->data) /* invalid data for PMC */ 398 return 0; 399 else 400 return sysfs_show_32bit_val(buf, offs, attr->data); 401 } 402 403 #define KFD_PERF_DESC(_name, _data) \ 404 { \ 405 .attr = __ATTR(_name, 0444, perf_show, NULL), \ 406 .data = _data, \ 407 } 408 409 static struct kfd_perf_attr perf_attr_iommu[] = { 410 KFD_PERF_DESC(max_concurrent, 0), 411 KFD_PERF_DESC(num_counters, 0), 412 KFD_PERF_DESC(counter_ids, 0), 413 }; 414 /****************************************/ 415 416 static ssize_t node_show(struct kobject *kobj, struct attribute *attr, 417 char *buffer) 418 { 419 int offs = 0; 420 struct kfd_topology_device *dev; 421 uint32_t log_max_watch_addr; 422 423 /* Making sure that the buffer is an empty string */ 424 buffer[0] = 0; 425 426 if (strcmp(attr->name, "gpu_id") == 0) { 427 dev = container_of(attr, struct kfd_topology_device, 428 attr_gpuid); 429 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu)) 430 return -EPERM; 431 return sysfs_show_32bit_val(buffer, offs, dev->gpu_id); 432 } 433 434 if (strcmp(attr->name, "name") == 0) { 435 dev = container_of(attr, struct kfd_topology_device, 436 attr_name); 437 438 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu)) 439 return -EPERM; 440 return sysfs_show_str_val(buffer, offs, dev->node_props.name); 441 } 442 443 dev = container_of(attr, struct kfd_topology_device, 444 attr_props); 445 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu)) 446 return -EPERM; 447 sysfs_show_32bit_prop(buffer, offs, "cpu_cores_count", 448 dev->node_props.cpu_cores_count); 449 sysfs_show_32bit_prop(buffer, offs, "simd_count", 450 dev->gpu ? dev->node_props.simd_count : 0); 451 sysfs_show_32bit_prop(buffer, offs, "mem_banks_count", 452 dev->node_props.mem_banks_count); 453 sysfs_show_32bit_prop(buffer, offs, "caches_count", 454 dev->node_props.caches_count); 455 sysfs_show_32bit_prop(buffer, offs, "io_links_count", 456 dev->node_props.io_links_count); 457 sysfs_show_32bit_prop(buffer, offs, "cpu_core_id_base", 458 dev->node_props.cpu_core_id_base); 459 sysfs_show_32bit_prop(buffer, offs, "simd_id_base", 460 dev->node_props.simd_id_base); 461 sysfs_show_32bit_prop(buffer, offs, "max_waves_per_simd", 462 dev->node_props.max_waves_per_simd); 463 sysfs_show_32bit_prop(buffer, offs, "lds_size_in_kb", 464 dev->node_props.lds_size_in_kb); 465 sysfs_show_32bit_prop(buffer, offs, "gds_size_in_kb", 466 dev->node_props.gds_size_in_kb); 467 sysfs_show_32bit_prop(buffer, offs, "num_gws", 468 dev->node_props.num_gws); 469 sysfs_show_32bit_prop(buffer, offs, "wave_front_size", 470 dev->node_props.wave_front_size); 471 sysfs_show_32bit_prop(buffer, offs, "array_count", 472 dev->node_props.array_count); 473 sysfs_show_32bit_prop(buffer, offs, "simd_arrays_per_engine", 474 dev->node_props.simd_arrays_per_engine); 475 sysfs_show_32bit_prop(buffer, offs, "cu_per_simd_array", 476 dev->node_props.cu_per_simd_array); 477 sysfs_show_32bit_prop(buffer, offs, "simd_per_cu", 478 dev->node_props.simd_per_cu); 479 sysfs_show_32bit_prop(buffer, offs, "max_slots_scratch_cu", 480 dev->node_props.max_slots_scratch_cu); 481 sysfs_show_32bit_prop(buffer, offs, "gfx_target_version", 482 dev->node_props.gfx_target_version); 483 sysfs_show_32bit_prop(buffer, offs, "vendor_id", 484 dev->node_props.vendor_id); 485 sysfs_show_32bit_prop(buffer, offs, "device_id", 486 dev->node_props.device_id); 487 sysfs_show_32bit_prop(buffer, offs, "location_id", 488 dev->node_props.location_id); 489 sysfs_show_32bit_prop(buffer, offs, "domain", 490 dev->node_props.domain); 491 sysfs_show_32bit_prop(buffer, offs, "drm_render_minor", 492 dev->node_props.drm_render_minor); 493 sysfs_show_64bit_prop(buffer, offs, "hive_id", 494 dev->node_props.hive_id); 495 sysfs_show_32bit_prop(buffer, offs, "num_sdma_engines", 496 dev->node_props.num_sdma_engines); 497 sysfs_show_32bit_prop(buffer, offs, "num_sdma_xgmi_engines", 498 dev->node_props.num_sdma_xgmi_engines); 499 sysfs_show_32bit_prop(buffer, offs, "num_sdma_queues_per_engine", 500 dev->node_props.num_sdma_queues_per_engine); 501 sysfs_show_32bit_prop(buffer, offs, "num_cp_queues", 502 dev->node_props.num_cp_queues); 503 504 if (dev->gpu) { 505 log_max_watch_addr = 506 __ilog2_u32(dev->gpu->device_info->num_of_watch_points); 507 508 if (log_max_watch_addr) { 509 dev->node_props.capability |= 510 HSA_CAP_WATCH_POINTS_SUPPORTED; 511 512 dev->node_props.capability |= 513 ((log_max_watch_addr << 514 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) & 515 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK); 516 } 517 518 if (dev->gpu->device_info->asic_family == CHIP_TONGA) 519 dev->node_props.capability |= 520 HSA_CAP_AQL_QUEUE_DOUBLE_MAP; 521 522 sysfs_show_32bit_prop(buffer, offs, "max_engine_clk_fcompute", 523 dev->node_props.max_engine_clk_fcompute); 524 525 sysfs_show_64bit_prop(buffer, offs, "local_mem_size", 0ULL); 526 527 sysfs_show_32bit_prop(buffer, offs, "fw_version", 528 dev->gpu->mec_fw_version); 529 sysfs_show_32bit_prop(buffer, offs, "capability", 530 dev->node_props.capability); 531 sysfs_show_32bit_prop(buffer, offs, "sdma_fw_version", 532 dev->gpu->sdma_fw_version); 533 sysfs_show_64bit_prop(buffer, offs, "unique_id", 534 amdgpu_amdkfd_get_unique_id(dev->gpu->kgd)); 535 536 } 537 538 return sysfs_show_32bit_prop(buffer, offs, "max_engine_clk_ccompute", 539 cpufreq_quick_get_max(0)/1000); 540 } 541 542 static const struct sysfs_ops node_ops = { 543 .show = node_show, 544 }; 545 546 static struct kobj_type node_type = { 547 .release = kfd_topology_kobj_release, 548 .sysfs_ops = &node_ops, 549 }; 550 551 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr) 552 { 553 sysfs_remove_file(kobj, attr); 554 kobject_del(kobj); 555 kobject_put(kobj); 556 } 557 558 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev) 559 { 560 struct kfd_iolink_properties *iolink; 561 struct kfd_cache_properties *cache; 562 struct kfd_mem_properties *mem; 563 struct kfd_perf_properties *perf; 564 565 if (dev->kobj_iolink) { 566 list_for_each_entry(iolink, &dev->io_link_props, list) 567 if (iolink->kobj) { 568 kfd_remove_sysfs_file(iolink->kobj, 569 &iolink->attr); 570 iolink->kobj = NULL; 571 } 572 kobject_del(dev->kobj_iolink); 573 kobject_put(dev->kobj_iolink); 574 dev->kobj_iolink = NULL; 575 } 576 577 if (dev->kobj_cache) { 578 list_for_each_entry(cache, &dev->cache_props, list) 579 if (cache->kobj) { 580 kfd_remove_sysfs_file(cache->kobj, 581 &cache->attr); 582 cache->kobj = NULL; 583 } 584 kobject_del(dev->kobj_cache); 585 kobject_put(dev->kobj_cache); 586 dev->kobj_cache = NULL; 587 } 588 589 if (dev->kobj_mem) { 590 list_for_each_entry(mem, &dev->mem_props, list) 591 if (mem->kobj) { 592 kfd_remove_sysfs_file(mem->kobj, &mem->attr); 593 mem->kobj = NULL; 594 } 595 kobject_del(dev->kobj_mem); 596 kobject_put(dev->kobj_mem); 597 dev->kobj_mem = NULL; 598 } 599 600 if (dev->kobj_perf) { 601 list_for_each_entry(perf, &dev->perf_props, list) { 602 kfree(perf->attr_group); 603 perf->attr_group = NULL; 604 } 605 kobject_del(dev->kobj_perf); 606 kobject_put(dev->kobj_perf); 607 dev->kobj_perf = NULL; 608 } 609 610 if (dev->kobj_node) { 611 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid); 612 sysfs_remove_file(dev->kobj_node, &dev->attr_name); 613 sysfs_remove_file(dev->kobj_node, &dev->attr_props); 614 kobject_del(dev->kobj_node); 615 kobject_put(dev->kobj_node); 616 dev->kobj_node = NULL; 617 } 618 } 619 620 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev, 621 uint32_t id) 622 { 623 struct kfd_iolink_properties *iolink; 624 struct kfd_cache_properties *cache; 625 struct kfd_mem_properties *mem; 626 struct kfd_perf_properties *perf; 627 int ret; 628 uint32_t i, num_attrs; 629 struct attribute **attrs; 630 631 if (WARN_ON(dev->kobj_node)) 632 return -EEXIST; 633 634 /* 635 * Creating the sysfs folders 636 */ 637 dev->kobj_node = kfd_alloc_struct(dev->kobj_node); 638 if (!dev->kobj_node) 639 return -ENOMEM; 640 641 ret = kobject_init_and_add(dev->kobj_node, &node_type, 642 sys_props.kobj_nodes, "%d", id); 643 if (ret < 0) { 644 kobject_put(dev->kobj_node); 645 return ret; 646 } 647 648 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node); 649 if (!dev->kobj_mem) 650 return -ENOMEM; 651 652 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node); 653 if (!dev->kobj_cache) 654 return -ENOMEM; 655 656 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node); 657 if (!dev->kobj_iolink) 658 return -ENOMEM; 659 660 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node); 661 if (!dev->kobj_perf) 662 return -ENOMEM; 663 664 /* 665 * Creating sysfs files for node properties 666 */ 667 dev->attr_gpuid.name = "gpu_id"; 668 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE; 669 sysfs_attr_init(&dev->attr_gpuid); 670 dev->attr_name.name = "name"; 671 dev->attr_name.mode = KFD_SYSFS_FILE_MODE; 672 sysfs_attr_init(&dev->attr_name); 673 dev->attr_props.name = "properties"; 674 dev->attr_props.mode = KFD_SYSFS_FILE_MODE; 675 sysfs_attr_init(&dev->attr_props); 676 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid); 677 if (ret < 0) 678 return ret; 679 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name); 680 if (ret < 0) 681 return ret; 682 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props); 683 if (ret < 0) 684 return ret; 685 686 i = 0; 687 list_for_each_entry(mem, &dev->mem_props, list) { 688 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 689 if (!mem->kobj) 690 return -ENOMEM; 691 ret = kobject_init_and_add(mem->kobj, &mem_type, 692 dev->kobj_mem, "%d", i); 693 if (ret < 0) { 694 kobject_put(mem->kobj); 695 return ret; 696 } 697 698 mem->attr.name = "properties"; 699 mem->attr.mode = KFD_SYSFS_FILE_MODE; 700 sysfs_attr_init(&mem->attr); 701 ret = sysfs_create_file(mem->kobj, &mem->attr); 702 if (ret < 0) 703 return ret; 704 i++; 705 } 706 707 i = 0; 708 list_for_each_entry(cache, &dev->cache_props, list) { 709 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 710 if (!cache->kobj) 711 return -ENOMEM; 712 ret = kobject_init_and_add(cache->kobj, &cache_type, 713 dev->kobj_cache, "%d", i); 714 if (ret < 0) { 715 kobject_put(cache->kobj); 716 return ret; 717 } 718 719 cache->attr.name = "properties"; 720 cache->attr.mode = KFD_SYSFS_FILE_MODE; 721 sysfs_attr_init(&cache->attr); 722 ret = sysfs_create_file(cache->kobj, &cache->attr); 723 if (ret < 0) 724 return ret; 725 i++; 726 } 727 728 i = 0; 729 list_for_each_entry(iolink, &dev->io_link_props, list) { 730 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 731 if (!iolink->kobj) 732 return -ENOMEM; 733 ret = kobject_init_and_add(iolink->kobj, &iolink_type, 734 dev->kobj_iolink, "%d", i); 735 if (ret < 0) { 736 kobject_put(iolink->kobj); 737 return ret; 738 } 739 740 iolink->attr.name = "properties"; 741 iolink->attr.mode = KFD_SYSFS_FILE_MODE; 742 sysfs_attr_init(&iolink->attr); 743 ret = sysfs_create_file(iolink->kobj, &iolink->attr); 744 if (ret < 0) 745 return ret; 746 i++; 747 } 748 749 /* All hardware blocks have the same number of attributes. */ 750 num_attrs = ARRAY_SIZE(perf_attr_iommu); 751 list_for_each_entry(perf, &dev->perf_props, list) { 752 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr) 753 * num_attrs + sizeof(struct attribute_group), 754 GFP_KERNEL); 755 if (!perf->attr_group) 756 return -ENOMEM; 757 758 attrs = (struct attribute **)(perf->attr_group + 1); 759 if (!strcmp(perf->block_name, "iommu")) { 760 /* Information of IOMMU's num_counters and counter_ids is shown 761 * under /sys/bus/event_source/devices/amd_iommu. We don't 762 * duplicate here. 763 */ 764 perf_attr_iommu[0].data = perf->max_concurrent; 765 for (i = 0; i < num_attrs; i++) 766 attrs[i] = &perf_attr_iommu[i].attr.attr; 767 } 768 perf->attr_group->name = perf->block_name; 769 perf->attr_group->attrs = attrs; 770 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group); 771 if (ret < 0) 772 return ret; 773 } 774 775 return 0; 776 } 777 778 /* Called with write topology lock acquired */ 779 static int kfd_build_sysfs_node_tree(void) 780 { 781 struct kfd_topology_device *dev; 782 int ret; 783 uint32_t i = 0; 784 785 list_for_each_entry(dev, &topology_device_list, list) { 786 ret = kfd_build_sysfs_node_entry(dev, i); 787 if (ret < 0) 788 return ret; 789 i++; 790 } 791 792 return 0; 793 } 794 795 /* Called with write topology lock acquired */ 796 static void kfd_remove_sysfs_node_tree(void) 797 { 798 struct kfd_topology_device *dev; 799 800 list_for_each_entry(dev, &topology_device_list, list) 801 kfd_remove_sysfs_node_entry(dev); 802 } 803 804 static int kfd_topology_update_sysfs(void) 805 { 806 int ret; 807 808 if (!sys_props.kobj_topology) { 809 sys_props.kobj_topology = 810 kfd_alloc_struct(sys_props.kobj_topology); 811 if (!sys_props.kobj_topology) 812 return -ENOMEM; 813 814 ret = kobject_init_and_add(sys_props.kobj_topology, 815 &sysprops_type, &kfd_device->kobj, 816 "topology"); 817 if (ret < 0) { 818 kobject_put(sys_props.kobj_topology); 819 return ret; 820 } 821 822 sys_props.kobj_nodes = kobject_create_and_add("nodes", 823 sys_props.kobj_topology); 824 if (!sys_props.kobj_nodes) 825 return -ENOMEM; 826 827 sys_props.attr_genid.name = "generation_id"; 828 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE; 829 sysfs_attr_init(&sys_props.attr_genid); 830 ret = sysfs_create_file(sys_props.kobj_topology, 831 &sys_props.attr_genid); 832 if (ret < 0) 833 return ret; 834 835 sys_props.attr_props.name = "system_properties"; 836 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE; 837 sysfs_attr_init(&sys_props.attr_props); 838 ret = sysfs_create_file(sys_props.kobj_topology, 839 &sys_props.attr_props); 840 if (ret < 0) 841 return ret; 842 } 843 844 kfd_remove_sysfs_node_tree(); 845 846 return kfd_build_sysfs_node_tree(); 847 } 848 849 static void kfd_topology_release_sysfs(void) 850 { 851 kfd_remove_sysfs_node_tree(); 852 if (sys_props.kobj_topology) { 853 sysfs_remove_file(sys_props.kobj_topology, 854 &sys_props.attr_genid); 855 sysfs_remove_file(sys_props.kobj_topology, 856 &sys_props.attr_props); 857 if (sys_props.kobj_nodes) { 858 kobject_del(sys_props.kobj_nodes); 859 kobject_put(sys_props.kobj_nodes); 860 sys_props.kobj_nodes = NULL; 861 } 862 kobject_del(sys_props.kobj_topology); 863 kobject_put(sys_props.kobj_topology); 864 sys_props.kobj_topology = NULL; 865 } 866 } 867 868 /* Called with write topology_lock acquired */ 869 static void kfd_topology_update_device_list(struct list_head *temp_list, 870 struct list_head *master_list) 871 { 872 while (!list_empty(temp_list)) { 873 list_move_tail(temp_list->next, master_list); 874 sys_props.num_devices++; 875 } 876 } 877 878 static void kfd_debug_print_topology(void) 879 { 880 struct kfd_topology_device *dev; 881 882 down_read(&topology_lock); 883 884 dev = list_last_entry(&topology_device_list, 885 struct kfd_topology_device, list); 886 if (dev) { 887 if (dev->node_props.cpu_cores_count && 888 dev->node_props.simd_count) { 889 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n", 890 dev->node_props.device_id, 891 dev->node_props.vendor_id); 892 } else if (dev->node_props.cpu_cores_count) 893 pr_info("Topology: Add CPU node\n"); 894 else if (dev->node_props.simd_count) 895 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n", 896 dev->node_props.device_id, 897 dev->node_props.vendor_id); 898 } 899 up_read(&topology_lock); 900 } 901 902 /* Helper function for intializing platform_xx members of 903 * kfd_system_properties. Uses OEM info from the last CPU/APU node. 904 */ 905 static void kfd_update_system_properties(void) 906 { 907 struct kfd_topology_device *dev; 908 909 down_read(&topology_lock); 910 dev = list_last_entry(&topology_device_list, 911 struct kfd_topology_device, list); 912 if (dev) { 913 sys_props.platform_id = 914 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK; 915 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id); 916 sys_props.platform_rev = dev->oem_revision; 917 } 918 up_read(&topology_lock); 919 } 920 921 static void find_system_memory(const struct dmi_header *dm, 922 void *private) 923 { 924 struct kfd_mem_properties *mem; 925 u16 mem_width, mem_clock; 926 struct kfd_topology_device *kdev = 927 (struct kfd_topology_device *)private; 928 const u8 *dmi_data = (const u8 *)(dm + 1); 929 930 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) { 931 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6)); 932 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11)); 933 list_for_each_entry(mem, &kdev->mem_props, list) { 934 if (mem_width != 0xFFFF && mem_width != 0) 935 mem->width = mem_width; 936 if (mem_clock != 0) 937 mem->mem_clk_max = mem_clock; 938 } 939 } 940 } 941 942 /* 943 * Performance counters information is not part of CRAT but we would like to 944 * put them in the sysfs under topology directory for Thunk to get the data. 945 * This function is called before updating the sysfs. 946 */ 947 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev) 948 { 949 /* These are the only counters supported so far */ 950 return kfd_iommu_add_perf_counters(kdev); 951 } 952 953 /* kfd_add_non_crat_information - Add information that is not currently 954 * defined in CRAT but is necessary for KFD topology 955 * @dev - topology device to which addition info is added 956 */ 957 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev) 958 { 959 /* Check if CPU only node. */ 960 if (!kdev->gpu) { 961 /* Add system memory information */ 962 dmi_walk(find_system_memory, kdev); 963 } 964 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */ 965 } 966 967 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices. 968 * Ignore CRAT for all other devices. AMD APU is identified if both CPU 969 * and GPU cores are present. 970 * @device_list - topology device list created by parsing ACPI CRAT table. 971 * @return - TRUE if invalid, FALSE is valid. 972 */ 973 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list) 974 { 975 struct kfd_topology_device *dev; 976 977 list_for_each_entry(dev, device_list, list) { 978 if (dev->node_props.cpu_cores_count && 979 dev->node_props.simd_count) 980 return false; 981 } 982 pr_info("Ignoring ACPI CRAT on non-APU system\n"); 983 return true; 984 } 985 986 int kfd_topology_init(void) 987 { 988 void *crat_image = NULL; 989 size_t image_size = 0; 990 int ret; 991 struct list_head temp_topology_device_list; 992 int cpu_only_node = 0; 993 struct kfd_topology_device *kdev; 994 int proximity_domain; 995 996 /* topology_device_list - Master list of all topology devices 997 * temp_topology_device_list - temporary list created while parsing CRAT 998 * or VCRAT. Once parsing is complete the contents of list is moved to 999 * topology_device_list 1000 */ 1001 1002 /* Initialize the head for the both the lists */ 1003 INIT_LIST_HEAD(&topology_device_list); 1004 INIT_LIST_HEAD(&temp_topology_device_list); 1005 init_rwsem(&topology_lock); 1006 1007 memset(&sys_props, 0, sizeof(sys_props)); 1008 1009 /* Proximity domains in ACPI CRAT tables start counting at 1010 * 0. The same should be true for virtual CRAT tables created 1011 * at this stage. GPUs added later in kfd_topology_add_device 1012 * use a counter. 1013 */ 1014 proximity_domain = 0; 1015 1016 /* 1017 * Get the CRAT image from the ACPI. If ACPI doesn't have one 1018 * or if ACPI CRAT is invalid create a virtual CRAT. 1019 * NOTE: The current implementation expects all AMD APUs to have 1020 * CRAT. If no CRAT is available, it is assumed to be a CPU 1021 */ 1022 ret = kfd_create_crat_image_acpi(&crat_image, &image_size); 1023 if (!ret) { 1024 ret = kfd_parse_crat_table(crat_image, 1025 &temp_topology_device_list, 1026 proximity_domain); 1027 if (ret || 1028 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) { 1029 kfd_release_topology_device_list( 1030 &temp_topology_device_list); 1031 kfd_destroy_crat_image(crat_image); 1032 crat_image = NULL; 1033 } 1034 } 1035 1036 if (!crat_image) { 1037 ret = kfd_create_crat_image_virtual(&crat_image, &image_size, 1038 COMPUTE_UNIT_CPU, NULL, 1039 proximity_domain); 1040 cpu_only_node = 1; 1041 if (ret) { 1042 pr_err("Error creating VCRAT table for CPU\n"); 1043 return ret; 1044 } 1045 1046 ret = kfd_parse_crat_table(crat_image, 1047 &temp_topology_device_list, 1048 proximity_domain); 1049 if (ret) { 1050 pr_err("Error parsing VCRAT table for CPU\n"); 1051 goto err; 1052 } 1053 } 1054 1055 kdev = list_first_entry(&temp_topology_device_list, 1056 struct kfd_topology_device, list); 1057 kfd_add_perf_to_topology(kdev); 1058 1059 down_write(&topology_lock); 1060 kfd_topology_update_device_list(&temp_topology_device_list, 1061 &topology_device_list); 1062 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1); 1063 ret = kfd_topology_update_sysfs(); 1064 up_write(&topology_lock); 1065 1066 if (!ret) { 1067 sys_props.generation_count++; 1068 kfd_update_system_properties(); 1069 kfd_debug_print_topology(); 1070 } else 1071 pr_err("Failed to update topology in sysfs ret=%d\n", ret); 1072 1073 /* For nodes with GPU, this information gets added 1074 * when GPU is detected (kfd_topology_add_device). 1075 */ 1076 if (cpu_only_node) { 1077 /* Add additional information to CPU only node created above */ 1078 down_write(&topology_lock); 1079 kdev = list_first_entry(&topology_device_list, 1080 struct kfd_topology_device, list); 1081 up_write(&topology_lock); 1082 kfd_add_non_crat_information(kdev); 1083 } 1084 1085 err: 1086 kfd_destroy_crat_image(crat_image); 1087 return ret; 1088 } 1089 1090 void kfd_topology_shutdown(void) 1091 { 1092 down_write(&topology_lock); 1093 kfd_topology_release_sysfs(); 1094 kfd_release_live_view(); 1095 up_write(&topology_lock); 1096 } 1097 1098 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu) 1099 { 1100 uint32_t hashout; 1101 uint32_t buf[7]; 1102 uint64_t local_mem_size; 1103 int i; 1104 struct kfd_local_mem_info local_mem_info; 1105 1106 if (!gpu) 1107 return 0; 1108 1109 amdgpu_amdkfd_get_local_mem_info(gpu->kgd, &local_mem_info); 1110 1111 local_mem_size = local_mem_info.local_mem_size_private + 1112 local_mem_info.local_mem_size_public; 1113 1114 buf[0] = gpu->pdev->devfn; 1115 buf[1] = gpu->pdev->subsystem_vendor | 1116 (gpu->pdev->subsystem_device << 16); 1117 buf[2] = pci_domain_nr(gpu->pdev->bus); 1118 buf[3] = gpu->pdev->device; 1119 buf[4] = gpu->pdev->bus->number; 1120 buf[5] = lower_32_bits(local_mem_size); 1121 buf[6] = upper_32_bits(local_mem_size); 1122 1123 for (i = 0, hashout = 0; i < 7; i++) 1124 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH); 1125 1126 return hashout; 1127 } 1128 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If 1129 * the GPU device is not already present in the topology device 1130 * list then return NULL. This means a new topology device has to 1131 * be created for this GPU. 1132 */ 1133 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) 1134 { 1135 struct kfd_topology_device *dev; 1136 struct kfd_topology_device *out_dev = NULL; 1137 struct kfd_mem_properties *mem; 1138 struct kfd_cache_properties *cache; 1139 struct kfd_iolink_properties *iolink; 1140 1141 down_write(&topology_lock); 1142 list_for_each_entry(dev, &topology_device_list, list) { 1143 /* Discrete GPUs need their own topology device list 1144 * entries. Don't assign them to CPU/APU nodes. 1145 */ 1146 if (!gpu->use_iommu_v2 && 1147 dev->node_props.cpu_cores_count) 1148 continue; 1149 1150 if (!dev->gpu && (dev->node_props.simd_count > 0)) { 1151 dev->gpu = gpu; 1152 out_dev = dev; 1153 1154 list_for_each_entry(mem, &dev->mem_props, list) 1155 mem->gpu = dev->gpu; 1156 list_for_each_entry(cache, &dev->cache_props, list) 1157 cache->gpu = dev->gpu; 1158 list_for_each_entry(iolink, &dev->io_link_props, list) 1159 iolink->gpu = dev->gpu; 1160 break; 1161 } 1162 } 1163 up_write(&topology_lock); 1164 return out_dev; 1165 } 1166 1167 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival) 1168 { 1169 /* 1170 * TODO: Generate an event for thunk about the arrival/removal 1171 * of the GPU 1172 */ 1173 } 1174 1175 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info, 1176 * patch this after CRAT parsing. 1177 */ 1178 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev) 1179 { 1180 struct kfd_mem_properties *mem; 1181 struct kfd_local_mem_info local_mem_info; 1182 1183 if (!dev) 1184 return; 1185 1186 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with 1187 * single bank of VRAM local memory. 1188 * for dGPUs - VCRAT reports only one bank of Local Memory 1189 * for APUs - If CRAT from ACPI reports more than one bank, then 1190 * all the banks will report the same mem_clk_max information 1191 */ 1192 amdgpu_amdkfd_get_local_mem_info(dev->gpu->kgd, &local_mem_info); 1193 1194 list_for_each_entry(mem, &dev->mem_props, list) 1195 mem->mem_clk_max = local_mem_info.mem_clk_max; 1196 } 1197 1198 static void kfd_set_iolink_no_atomics(struct kfd_topology_device *dev, 1199 struct kfd_topology_device *target_gpu_dev, 1200 struct kfd_iolink_properties *link) 1201 { 1202 /* xgmi always supports atomics between links. */ 1203 if (link->iolink_type == CRAT_IOLINK_TYPE_XGMI) 1204 return; 1205 1206 /* check pcie support to set cpu(dev) flags for target_gpu_dev link. */ 1207 if (target_gpu_dev) { 1208 uint32_t cap; 1209 1210 pcie_capability_read_dword(target_gpu_dev->gpu->pdev, 1211 PCI_EXP_DEVCAP2, &cap); 1212 1213 if (!(cap & (PCI_EXP_DEVCAP2_ATOMIC_COMP32 | 1214 PCI_EXP_DEVCAP2_ATOMIC_COMP64))) 1215 link->flags |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1216 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1217 /* set gpu (dev) flags. */ 1218 } else { 1219 if (!dev->gpu->pci_atomic_requested || 1220 dev->gpu->device_info->asic_family == 1221 CHIP_HAWAII) 1222 link->flags |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1223 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1224 } 1225 } 1226 1227 static void kfd_set_iolink_non_coherent(struct kfd_topology_device *to_dev, 1228 struct kfd_iolink_properties *outbound_link, 1229 struct kfd_iolink_properties *inbound_link) 1230 { 1231 /* CPU -> GPU with PCIe */ 1232 if (!to_dev->gpu && 1233 inbound_link->iolink_type == CRAT_IOLINK_TYPE_PCIEXPRESS) 1234 inbound_link->flags |= CRAT_IOLINK_FLAGS_NON_COHERENT; 1235 1236 if (to_dev->gpu) { 1237 /* GPU <-> GPU with PCIe and 1238 * Vega20 with XGMI 1239 */ 1240 if (inbound_link->iolink_type == CRAT_IOLINK_TYPE_PCIEXPRESS || 1241 (inbound_link->iolink_type == CRAT_IOLINK_TYPE_XGMI && 1242 to_dev->gpu->device_info->asic_family == CHIP_VEGA20)) { 1243 outbound_link->flags |= CRAT_IOLINK_FLAGS_NON_COHERENT; 1244 inbound_link->flags |= CRAT_IOLINK_FLAGS_NON_COHERENT; 1245 } 1246 } 1247 } 1248 1249 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev) 1250 { 1251 struct kfd_iolink_properties *link, *inbound_link; 1252 struct kfd_topology_device *peer_dev; 1253 1254 if (!dev || !dev->gpu) 1255 return; 1256 1257 /* GPU only creates direct links so apply flags setting to all */ 1258 list_for_each_entry(link, &dev->io_link_props, list) { 1259 link->flags = CRAT_IOLINK_FLAGS_ENABLED; 1260 kfd_set_iolink_no_atomics(dev, NULL, link); 1261 peer_dev = kfd_topology_device_by_proximity_domain( 1262 link->node_to); 1263 1264 if (!peer_dev) 1265 continue; 1266 1267 list_for_each_entry(inbound_link, &peer_dev->io_link_props, 1268 list) { 1269 if (inbound_link->node_to != link->node_from) 1270 continue; 1271 1272 inbound_link->flags = CRAT_IOLINK_FLAGS_ENABLED; 1273 kfd_set_iolink_no_atomics(peer_dev, dev, inbound_link); 1274 kfd_set_iolink_non_coherent(peer_dev, link, inbound_link); 1275 } 1276 } 1277 } 1278 1279 int kfd_topology_add_device(struct kfd_dev *gpu) 1280 { 1281 uint32_t gpu_id; 1282 struct kfd_topology_device *dev; 1283 struct kfd_cu_info cu_info; 1284 int res = 0; 1285 struct list_head temp_topology_device_list; 1286 void *crat_image = NULL; 1287 size_t image_size = 0; 1288 int proximity_domain; 1289 struct amdgpu_device *adev; 1290 1291 INIT_LIST_HEAD(&temp_topology_device_list); 1292 1293 gpu_id = kfd_generate_gpu_id(gpu); 1294 1295 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id); 1296 1297 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain); 1298 1299 adev = (struct amdgpu_device *)(gpu->kgd); 1300 1301 /* Include the CPU in xGMI hive if xGMI connected by assigning it the hive ID. */ 1302 if (gpu->hive_id && adev->gmc.xgmi.connected_to_cpu) { 1303 struct kfd_topology_device *top_dev; 1304 1305 down_read(&topology_lock); 1306 1307 list_for_each_entry(top_dev, &topology_device_list, list) { 1308 if (top_dev->gpu) 1309 break; 1310 1311 top_dev->node_props.hive_id = gpu->hive_id; 1312 } 1313 1314 up_read(&topology_lock); 1315 } 1316 1317 /* Check to see if this gpu device exists in the topology_device_list. 1318 * If so, assign the gpu to that device, 1319 * else create a Virtual CRAT for this gpu device and then parse that 1320 * CRAT to create a new topology device. Once created assign the gpu to 1321 * that topology device 1322 */ 1323 dev = kfd_assign_gpu(gpu); 1324 if (!dev) { 1325 res = kfd_create_crat_image_virtual(&crat_image, &image_size, 1326 COMPUTE_UNIT_GPU, gpu, 1327 proximity_domain); 1328 if (res) { 1329 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n", 1330 gpu_id); 1331 return res; 1332 } 1333 res = kfd_parse_crat_table(crat_image, 1334 &temp_topology_device_list, 1335 proximity_domain); 1336 if (res) { 1337 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n", 1338 gpu_id); 1339 goto err; 1340 } 1341 1342 down_write(&topology_lock); 1343 kfd_topology_update_device_list(&temp_topology_device_list, 1344 &topology_device_list); 1345 1346 /* Update the SYSFS tree, since we added another topology 1347 * device 1348 */ 1349 res = kfd_topology_update_sysfs(); 1350 up_write(&topology_lock); 1351 1352 if (!res) 1353 sys_props.generation_count++; 1354 else 1355 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n", 1356 gpu_id, res); 1357 dev = kfd_assign_gpu(gpu); 1358 if (WARN_ON(!dev)) { 1359 res = -ENODEV; 1360 goto err; 1361 } 1362 } 1363 1364 dev->gpu_id = gpu_id; 1365 gpu->id = gpu_id; 1366 1367 /* TODO: Move the following lines to function 1368 * kfd_add_non_crat_information 1369 */ 1370 1371 /* Fill-in additional information that is not available in CRAT but 1372 * needed for the topology 1373 */ 1374 1375 amdgpu_amdkfd_get_cu_info(dev->gpu->kgd, &cu_info); 1376 1377 strncpy(dev->node_props.name, gpu->device_info->asic_name, 1378 KFD_TOPOLOGY_PUBLIC_NAME_SIZE); 1379 1380 dev->node_props.simd_arrays_per_engine = 1381 cu_info.num_shader_arrays_per_engine; 1382 1383 dev->node_props.gfx_target_version = gpu->device_info->gfx_target_version; 1384 dev->node_props.vendor_id = gpu->pdev->vendor; 1385 dev->node_props.device_id = gpu->pdev->device; 1386 dev->node_props.capability |= 1387 ((amdgpu_amdkfd_get_asic_rev_id(dev->gpu->kgd) << 1388 HSA_CAP_ASIC_REVISION_SHIFT) & 1389 HSA_CAP_ASIC_REVISION_MASK); 1390 dev->node_props.location_id = pci_dev_id(gpu->pdev); 1391 dev->node_props.domain = pci_domain_nr(gpu->pdev->bus); 1392 dev->node_props.max_engine_clk_fcompute = 1393 amdgpu_amdkfd_get_max_engine_clock_in_mhz(dev->gpu->kgd); 1394 dev->node_props.max_engine_clk_ccompute = 1395 cpufreq_quick_get_max(0) / 1000; 1396 dev->node_props.drm_render_minor = 1397 gpu->shared_resources.drm_render_minor; 1398 1399 dev->node_props.hive_id = gpu->hive_id; 1400 dev->node_props.num_sdma_engines = gpu->device_info->num_sdma_engines; 1401 dev->node_props.num_sdma_xgmi_engines = 1402 gpu->device_info->num_xgmi_sdma_engines; 1403 dev->node_props.num_sdma_queues_per_engine = 1404 gpu->device_info->num_sdma_queues_per_engine; 1405 dev->node_props.num_gws = (dev->gpu->gws && 1406 dev->gpu->dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) ? 1407 amdgpu_amdkfd_get_num_gws(dev->gpu->kgd) : 0; 1408 dev->node_props.num_cp_queues = get_cp_queues_num(dev->gpu->dqm); 1409 1410 kfd_fill_mem_clk_max_info(dev); 1411 kfd_fill_iolink_non_crat_info(dev); 1412 1413 switch (dev->gpu->device_info->asic_family) { 1414 case CHIP_KAVERI: 1415 case CHIP_HAWAII: 1416 case CHIP_TONGA: 1417 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 << 1418 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1419 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1420 break; 1421 case CHIP_CARRIZO: 1422 case CHIP_FIJI: 1423 case CHIP_POLARIS10: 1424 case CHIP_POLARIS11: 1425 case CHIP_POLARIS12: 1426 case CHIP_VEGAM: 1427 pr_debug("Adding doorbell packet type capability\n"); 1428 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 << 1429 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1430 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1431 break; 1432 case CHIP_VEGA10: 1433 case CHIP_VEGA12: 1434 case CHIP_VEGA20: 1435 case CHIP_RAVEN: 1436 case CHIP_RENOIR: 1437 case CHIP_ARCTURUS: 1438 case CHIP_ALDEBARAN: 1439 case CHIP_NAVI10: 1440 case CHIP_NAVI12: 1441 case CHIP_NAVI14: 1442 case CHIP_SIENNA_CICHLID: 1443 case CHIP_NAVY_FLOUNDER: 1444 case CHIP_VANGOGH: 1445 case CHIP_DIMGREY_CAVEFISH: 1446 case CHIP_BEIGE_GOBY: 1447 case CHIP_YELLOW_CARP: 1448 case CHIP_CYAN_SKILLFISH: 1449 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 << 1450 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1451 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1452 break; 1453 default: 1454 WARN(1, "Unexpected ASIC family %u", 1455 dev->gpu->device_info->asic_family); 1456 } 1457 1458 /* 1459 * Overwrite ATS capability according to needs_iommu_device to fix 1460 * potential missing corresponding bit in CRAT of BIOS. 1461 */ 1462 if (dev->gpu->use_iommu_v2) 1463 dev->node_props.capability |= HSA_CAP_ATS_PRESENT; 1464 else 1465 dev->node_props.capability &= ~HSA_CAP_ATS_PRESENT; 1466 1467 /* Fix errors in CZ CRAT. 1468 * simd_count: Carrizo CRAT reports wrong simd_count, probably 1469 * because it doesn't consider masked out CUs 1470 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd 1471 */ 1472 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) { 1473 dev->node_props.simd_count = 1474 cu_info.simd_per_cu * cu_info.cu_active_number; 1475 dev->node_props.max_waves_per_simd = 10; 1476 } 1477 1478 /* kfd only concerns sram ecc on GFX and HBM ecc on UMC */ 1479 dev->node_props.capability |= 1480 ((adev->ras_enabled & BIT(AMDGPU_RAS_BLOCK__GFX)) != 0) ? 1481 HSA_CAP_SRAM_EDCSUPPORTED : 0; 1482 dev->node_props.capability |= ((adev->ras_enabled & BIT(AMDGPU_RAS_BLOCK__UMC)) != 0) ? 1483 HSA_CAP_MEM_EDCSUPPORTED : 0; 1484 1485 if (adev->asic_type != CHIP_VEGA10) 1486 dev->node_props.capability |= (adev->ras_enabled != 0) ? 1487 HSA_CAP_RASEVENTNOTIFY : 0; 1488 1489 if (KFD_IS_SVM_API_SUPPORTED(adev->kfd.dev)) 1490 dev->node_props.capability |= HSA_CAP_SVMAPI_SUPPORTED; 1491 1492 kfd_debug_print_topology(); 1493 1494 if (!res) 1495 kfd_notify_gpu_change(gpu_id, 1); 1496 err: 1497 kfd_destroy_crat_image(crat_image); 1498 return res; 1499 } 1500 1501 int kfd_topology_remove_device(struct kfd_dev *gpu) 1502 { 1503 struct kfd_topology_device *dev, *tmp; 1504 uint32_t gpu_id; 1505 int res = -ENODEV; 1506 1507 down_write(&topology_lock); 1508 1509 list_for_each_entry_safe(dev, tmp, &topology_device_list, list) 1510 if (dev->gpu == gpu) { 1511 gpu_id = dev->gpu_id; 1512 kfd_remove_sysfs_node_entry(dev); 1513 kfd_release_topology_device(dev); 1514 sys_props.num_devices--; 1515 res = 0; 1516 if (kfd_topology_update_sysfs() < 0) 1517 kfd_topology_release_sysfs(); 1518 break; 1519 } 1520 1521 up_write(&topology_lock); 1522 1523 if (!res) 1524 kfd_notify_gpu_change(gpu_id, 0); 1525 1526 return res; 1527 } 1528 1529 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD 1530 * topology. If GPU device is found @idx, then valid kfd_dev pointer is 1531 * returned through @kdev 1532 * Return - 0: On success (@kdev will be NULL for non GPU nodes) 1533 * -1: If end of list 1534 */ 1535 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev) 1536 { 1537 1538 struct kfd_topology_device *top_dev; 1539 uint8_t device_idx = 0; 1540 1541 *kdev = NULL; 1542 down_read(&topology_lock); 1543 1544 list_for_each_entry(top_dev, &topology_device_list, list) { 1545 if (device_idx == idx) { 1546 *kdev = top_dev->gpu; 1547 up_read(&topology_lock); 1548 return 0; 1549 } 1550 1551 device_idx++; 1552 } 1553 1554 up_read(&topology_lock); 1555 1556 return -1; 1557 1558 } 1559 1560 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask) 1561 { 1562 int first_cpu_of_numa_node; 1563 1564 if (!cpumask || cpumask == cpu_none_mask) 1565 return -1; 1566 first_cpu_of_numa_node = cpumask_first(cpumask); 1567 if (first_cpu_of_numa_node >= nr_cpu_ids) 1568 return -1; 1569 #ifdef CONFIG_X86_64 1570 return cpu_data(first_cpu_of_numa_node).apicid; 1571 #else 1572 return first_cpu_of_numa_node; 1573 #endif 1574 } 1575 1576 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor 1577 * of the given NUMA node (numa_node_id) 1578 * Return -1 on failure 1579 */ 1580 int kfd_numa_node_to_apic_id(int numa_node_id) 1581 { 1582 if (numa_node_id == -1) { 1583 pr_warn("Invalid NUMA Node. Use online CPU mask\n"); 1584 return kfd_cpumask_to_apic_id(cpu_online_mask); 1585 } 1586 return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id)); 1587 } 1588 1589 void kfd_double_confirm_iommu_support(struct kfd_dev *gpu) 1590 { 1591 struct kfd_topology_device *dev; 1592 1593 gpu->use_iommu_v2 = false; 1594 1595 if (!gpu->device_info->needs_iommu_device) 1596 return; 1597 1598 down_read(&topology_lock); 1599 1600 /* Only use IOMMUv2 if there is an APU topology node with no GPU 1601 * assigned yet. This GPU will be assigned to it. 1602 */ 1603 list_for_each_entry(dev, &topology_device_list, list) 1604 if (dev->node_props.cpu_cores_count && 1605 dev->node_props.simd_count && 1606 !dev->gpu) 1607 gpu->use_iommu_v2 = true; 1608 1609 up_read(&topology_lock); 1610 } 1611 1612 #if defined(CONFIG_DEBUG_FS) 1613 1614 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data) 1615 { 1616 struct kfd_topology_device *dev; 1617 unsigned int i = 0; 1618 int r = 0; 1619 1620 down_read(&topology_lock); 1621 1622 list_for_each_entry(dev, &topology_device_list, list) { 1623 if (!dev->gpu) { 1624 i++; 1625 continue; 1626 } 1627 1628 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1629 r = dqm_debugfs_hqds(m, dev->gpu->dqm); 1630 if (r) 1631 break; 1632 } 1633 1634 up_read(&topology_lock); 1635 1636 return r; 1637 } 1638 1639 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data) 1640 { 1641 struct kfd_topology_device *dev; 1642 unsigned int i = 0; 1643 int r = 0; 1644 1645 down_read(&topology_lock); 1646 1647 list_for_each_entry(dev, &topology_device_list, list) { 1648 if (!dev->gpu) { 1649 i++; 1650 continue; 1651 } 1652 1653 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1654 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packet_mgr); 1655 if (r) 1656 break; 1657 } 1658 1659 up_read(&topology_lock); 1660 1661 return r; 1662 } 1663 1664 #endif 1665