1 /* $NetBSD: kfd_topology.c,v 1.3 2021/12/18 23:44:59 riastradh Exp $ */ 2 3 /* 4 * Copyright 2014 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #include <sys/cdefs.h> 26 __KERNEL_RCSID(0, "$NetBSD: kfd_topology.c,v 1.3 2021/12/18 23:44:59 riastradh Exp $"); 27 28 #include <linux/types.h> 29 #include <linux/kernel.h> 30 #include <linux/pci.h> 31 #include <linux/errno.h> 32 #include <linux/acpi.h> 33 #include <linux/hash.h> 34 #include <linux/cpufreq.h> 35 #include <linux/log2.h> 36 #include <linux/dmi.h> 37 #include <linux/atomic.h> 38 39 #include "kfd_priv.h" 40 #include "kfd_crat.h" 41 #include "kfd_topology.h" 42 #include "kfd_device_queue_manager.h" 43 #include "kfd_iommu.h" 44 #include "amdgpu_amdkfd.h" 45 #include "amdgpu_ras.h" 46 47 /* topology_device_list - Master list of all topology devices */ 48 static struct list_head topology_device_list; 49 static struct kfd_system_properties sys_props; 50 51 static DECLARE_RWSEM(topology_lock); 52 static atomic_t topology_crat_proximity_domain; 53 54 struct kfd_topology_device *kfd_topology_device_by_proximity_domain( 55 uint32_t proximity_domain) 56 { 57 struct kfd_topology_device *top_dev; 58 struct kfd_topology_device *device = NULL; 59 60 down_read(&topology_lock); 61 62 list_for_each_entry(top_dev, &topology_device_list, list) 63 if (top_dev->proximity_domain == proximity_domain) { 64 device = top_dev; 65 break; 66 } 67 68 up_read(&topology_lock); 69 70 return device; 71 } 72 73 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id) 74 { 75 struct kfd_topology_device *top_dev = NULL; 76 struct kfd_topology_device *ret = NULL; 77 78 down_read(&topology_lock); 79 80 list_for_each_entry(top_dev, &topology_device_list, list) 81 if (top_dev->gpu_id == gpu_id) { 82 ret = top_dev; 83 break; 84 } 85 86 up_read(&topology_lock); 87 88 return ret; 89 } 90 91 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id) 92 { 93 struct kfd_topology_device *top_dev; 94 95 top_dev = kfd_topology_device_by_id(gpu_id); 96 if (!top_dev) 97 return NULL; 98 99 return top_dev->gpu; 100 } 101 102 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev) 103 { 104 struct kfd_topology_device *top_dev; 105 struct kfd_dev *device = NULL; 106 107 down_read(&topology_lock); 108 109 list_for_each_entry(top_dev, &topology_device_list, list) 110 if (top_dev->gpu && top_dev->gpu->pdev == pdev) { 111 device = top_dev->gpu; 112 break; 113 } 114 115 up_read(&topology_lock); 116 117 return device; 118 } 119 120 struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd) 121 { 122 struct kfd_topology_device *top_dev; 123 struct kfd_dev *device = NULL; 124 125 down_read(&topology_lock); 126 127 list_for_each_entry(top_dev, &topology_device_list, list) 128 if (top_dev->gpu && top_dev->gpu->kgd == kgd) { 129 device = top_dev->gpu; 130 break; 131 } 132 133 up_read(&topology_lock); 134 135 return device; 136 } 137 138 /* Called with write topology_lock acquired */ 139 static void kfd_release_topology_device(struct kfd_topology_device *dev) 140 { 141 struct kfd_mem_properties *mem; 142 struct kfd_cache_properties *cache; 143 struct kfd_iolink_properties *iolink; 144 struct kfd_perf_properties *perf; 145 146 list_del(&dev->list); 147 148 while (dev->mem_props.next != &dev->mem_props) { 149 mem = container_of(dev->mem_props.next, 150 struct kfd_mem_properties, list); 151 list_del(&mem->list); 152 kfree(mem); 153 } 154 155 while (dev->cache_props.next != &dev->cache_props) { 156 cache = container_of(dev->cache_props.next, 157 struct kfd_cache_properties, list); 158 list_del(&cache->list); 159 kfree(cache); 160 } 161 162 while (dev->io_link_props.next != &dev->io_link_props) { 163 iolink = container_of(dev->io_link_props.next, 164 struct kfd_iolink_properties, list); 165 list_del(&iolink->list); 166 kfree(iolink); 167 } 168 169 while (dev->perf_props.next != &dev->perf_props) { 170 perf = container_of(dev->perf_props.next, 171 struct kfd_perf_properties, list); 172 list_del(&perf->list); 173 kfree(perf); 174 } 175 176 kfree(dev); 177 } 178 179 void kfd_release_topology_device_list(struct list_head *device_list) 180 { 181 struct kfd_topology_device *dev; 182 183 while (!list_empty(device_list)) { 184 dev = list_first_entry(device_list, 185 struct kfd_topology_device, list); 186 kfd_release_topology_device(dev); 187 } 188 } 189 190 static void kfd_release_live_view(void) 191 { 192 kfd_release_topology_device_list(&topology_device_list); 193 memset(&sys_props, 0, sizeof(sys_props)); 194 } 195 196 struct kfd_topology_device *kfd_create_topology_device( 197 struct list_head *device_list) 198 { 199 struct kfd_topology_device *dev; 200 201 dev = kfd_alloc_struct(dev); 202 if (!dev) { 203 pr_err("No memory to allocate a topology device"); 204 return NULL; 205 } 206 207 INIT_LIST_HEAD(&dev->mem_props); 208 INIT_LIST_HEAD(&dev->cache_props); 209 INIT_LIST_HEAD(&dev->io_link_props); 210 INIT_LIST_HEAD(&dev->perf_props); 211 212 list_add_tail(&dev->list, device_list); 213 214 return dev; 215 } 216 217 218 #define sysfs_show_gen_prop(buffer, fmt, ...) \ 219 snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__) 220 #define sysfs_show_32bit_prop(buffer, name, value) \ 221 sysfs_show_gen_prop(buffer, "%s %u\n", name, value) 222 #define sysfs_show_64bit_prop(buffer, name, value) \ 223 sysfs_show_gen_prop(buffer, "%s %llu\n", name, value) 224 #define sysfs_show_32bit_val(buffer, value) \ 225 sysfs_show_gen_prop(buffer, "%u\n", value) 226 #define sysfs_show_str_val(buffer, value) \ 227 sysfs_show_gen_prop(buffer, "%s\n", value) 228 229 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr, 230 char *buffer) 231 { 232 ssize_t ret; 233 234 /* Making sure that the buffer is an empty string */ 235 buffer[0] = 0; 236 237 if (attr == &sys_props.attr_genid) { 238 ret = sysfs_show_32bit_val(buffer, sys_props.generation_count); 239 } else if (attr == &sys_props.attr_props) { 240 sysfs_show_64bit_prop(buffer, "platform_oem", 241 sys_props.platform_oem); 242 sysfs_show_64bit_prop(buffer, "platform_id", 243 sys_props.platform_id); 244 ret = sysfs_show_64bit_prop(buffer, "platform_rev", 245 sys_props.platform_rev); 246 } else { 247 ret = -EINVAL; 248 } 249 250 return ret; 251 } 252 253 static void kfd_topology_kobj_release(struct kobject *kobj) 254 { 255 kfree(kobj); 256 } 257 258 static const struct sysfs_ops sysprops_ops = { 259 .show = sysprops_show, 260 }; 261 262 static struct kobj_type sysprops_type = { 263 .release = kfd_topology_kobj_release, 264 .sysfs_ops = &sysprops_ops, 265 }; 266 267 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr, 268 char *buffer) 269 { 270 ssize_t ret; 271 struct kfd_iolink_properties *iolink; 272 273 /* Making sure that the buffer is an empty string */ 274 buffer[0] = 0; 275 276 iolink = container_of(attr, struct kfd_iolink_properties, attr); 277 if (iolink->gpu && kfd_devcgroup_check_permission(iolink->gpu)) 278 return -EPERM; 279 sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type); 280 sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj); 281 sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min); 282 sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from); 283 sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to); 284 sysfs_show_32bit_prop(buffer, "weight", iolink->weight); 285 sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency); 286 sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency); 287 sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth); 288 sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth); 289 sysfs_show_32bit_prop(buffer, "recommended_transfer_size", 290 iolink->rec_transfer_size); 291 ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags); 292 293 return ret; 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 ssize_t ret; 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, "heap_type", mem->heap_type); 318 sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes); 319 sysfs_show_32bit_prop(buffer, "flags", mem->flags); 320 sysfs_show_32bit_prop(buffer, "width", mem->width); 321 ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max); 322 323 return ret; 324 } 325 326 static const struct sysfs_ops mem_ops = { 327 .show = mem_show, 328 }; 329 330 static struct kobj_type mem_type = { 331 .release = kfd_topology_kobj_release, 332 .sysfs_ops = &mem_ops, 333 }; 334 335 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr, 336 char *buffer) 337 { 338 ssize_t ret; 339 uint32_t i, j; 340 struct kfd_cache_properties *cache; 341 342 /* Making sure that the buffer is an empty string */ 343 buffer[0] = 0; 344 345 cache = container_of(attr, struct kfd_cache_properties, attr); 346 if (cache->gpu && kfd_devcgroup_check_permission(cache->gpu)) 347 return -EPERM; 348 sysfs_show_32bit_prop(buffer, "processor_id_low", 349 cache->processor_id_low); 350 sysfs_show_32bit_prop(buffer, "level", cache->cache_level); 351 sysfs_show_32bit_prop(buffer, "size", cache->cache_size); 352 sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size); 353 sysfs_show_32bit_prop(buffer, "cache_lines_per_tag", 354 cache->cachelines_per_tag); 355 sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc); 356 sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency); 357 sysfs_show_32bit_prop(buffer, "type", cache->cache_type); 358 snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer); 359 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++) 360 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) { 361 /* Check each bit */ 362 if (cache->sibling_map[i] & (1 << j)) 363 ret = snprintf(buffer, PAGE_SIZE, 364 "%s%d%s", buffer, 1, ","); 365 else 366 ret = snprintf(buffer, PAGE_SIZE, 367 "%s%d%s", buffer, 0, ","); 368 } 369 /* Replace the last "," with end of line */ 370 *(buffer + strlen(buffer) - 1) = 0xA; 371 return ret; 372 } 373 374 static const struct sysfs_ops cache_ops = { 375 .show = kfd_cache_show, 376 }; 377 378 static struct kobj_type cache_type = { 379 .release = kfd_topology_kobj_release, 380 .sysfs_ops = &cache_ops, 381 }; 382 383 /****** Sysfs of Performance Counters ******/ 384 385 struct kfd_perf_attr { 386 struct kobj_attribute attr; 387 uint32_t data; 388 }; 389 390 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs, 391 char *buf) 392 { 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, 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 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, 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, 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, "cpu_cores_count", 447 dev->node_props.cpu_cores_count); 448 sysfs_show_32bit_prop(buffer, "simd_count", 449 dev->node_props.simd_count); 450 sysfs_show_32bit_prop(buffer, "mem_banks_count", 451 dev->node_props.mem_banks_count); 452 sysfs_show_32bit_prop(buffer, "caches_count", 453 dev->node_props.caches_count); 454 sysfs_show_32bit_prop(buffer, "io_links_count", 455 dev->node_props.io_links_count); 456 sysfs_show_32bit_prop(buffer, "cpu_core_id_base", 457 dev->node_props.cpu_core_id_base); 458 sysfs_show_32bit_prop(buffer, "simd_id_base", 459 dev->node_props.simd_id_base); 460 sysfs_show_32bit_prop(buffer, "max_waves_per_simd", 461 dev->node_props.max_waves_per_simd); 462 sysfs_show_32bit_prop(buffer, "lds_size_in_kb", 463 dev->node_props.lds_size_in_kb); 464 sysfs_show_32bit_prop(buffer, "gds_size_in_kb", 465 dev->node_props.gds_size_in_kb); 466 sysfs_show_32bit_prop(buffer, "num_gws", 467 dev->node_props.num_gws); 468 sysfs_show_32bit_prop(buffer, "wave_front_size", 469 dev->node_props.wave_front_size); 470 sysfs_show_32bit_prop(buffer, "array_count", 471 dev->node_props.array_count); 472 sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine", 473 dev->node_props.simd_arrays_per_engine); 474 sysfs_show_32bit_prop(buffer, "cu_per_simd_array", 475 dev->node_props.cu_per_simd_array); 476 sysfs_show_32bit_prop(buffer, "simd_per_cu", 477 dev->node_props.simd_per_cu); 478 sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu", 479 dev->node_props.max_slots_scratch_cu); 480 sysfs_show_32bit_prop(buffer, "vendor_id", 481 dev->node_props.vendor_id); 482 sysfs_show_32bit_prop(buffer, "device_id", 483 dev->node_props.device_id); 484 sysfs_show_32bit_prop(buffer, "location_id", 485 dev->node_props.location_id); 486 sysfs_show_32bit_prop(buffer, "drm_render_minor", 487 dev->node_props.drm_render_minor); 488 sysfs_show_64bit_prop(buffer, "hive_id", 489 dev->node_props.hive_id); 490 sysfs_show_32bit_prop(buffer, "num_sdma_engines", 491 dev->node_props.num_sdma_engines); 492 sysfs_show_32bit_prop(buffer, "num_sdma_xgmi_engines", 493 dev->node_props.num_sdma_xgmi_engines); 494 sysfs_show_32bit_prop(buffer, "num_sdma_queues_per_engine", 495 dev->node_props.num_sdma_queues_per_engine); 496 sysfs_show_32bit_prop(buffer, "num_cp_queues", 497 dev->node_props.num_cp_queues); 498 499 if (dev->gpu) { 500 log_max_watch_addr = 501 __ilog2_u32(dev->gpu->device_info->num_of_watch_points); 502 503 if (log_max_watch_addr) { 504 dev->node_props.capability |= 505 HSA_CAP_WATCH_POINTS_SUPPORTED; 506 507 dev->node_props.capability |= 508 ((log_max_watch_addr << 509 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) & 510 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK); 511 } 512 513 if (dev->gpu->device_info->asic_family == CHIP_TONGA) 514 dev->node_props.capability |= 515 HSA_CAP_AQL_QUEUE_DOUBLE_MAP; 516 517 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute", 518 dev->node_props.max_engine_clk_fcompute); 519 520 sysfs_show_64bit_prop(buffer, "local_mem_size", 521 (unsigned long long int) 0); 522 523 sysfs_show_32bit_prop(buffer, "fw_version", 524 dev->gpu->mec_fw_version); 525 sysfs_show_32bit_prop(buffer, "capability", 526 dev->node_props.capability); 527 sysfs_show_32bit_prop(buffer, "sdma_fw_version", 528 dev->gpu->sdma_fw_version); 529 } 530 531 return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute", 532 cpufreq_quick_get_max(0)/1000); 533 } 534 535 static const struct sysfs_ops node_ops = { 536 .show = node_show, 537 }; 538 539 static struct kobj_type node_type = { 540 .release = kfd_topology_kobj_release, 541 .sysfs_ops = &node_ops, 542 }; 543 544 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr) 545 { 546 sysfs_remove_file(kobj, attr); 547 kobject_del(kobj); 548 kobject_put(kobj); 549 } 550 551 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev) 552 { 553 struct kfd_iolink_properties *iolink; 554 struct kfd_cache_properties *cache; 555 struct kfd_mem_properties *mem; 556 struct kfd_perf_properties *perf; 557 558 if (dev->kobj_iolink) { 559 list_for_each_entry(iolink, &dev->io_link_props, list) 560 if (iolink->kobj) { 561 kfd_remove_sysfs_file(iolink->kobj, 562 &iolink->attr); 563 iolink->kobj = NULL; 564 } 565 kobject_del(dev->kobj_iolink); 566 kobject_put(dev->kobj_iolink); 567 dev->kobj_iolink = NULL; 568 } 569 570 if (dev->kobj_cache) { 571 list_for_each_entry(cache, &dev->cache_props, list) 572 if (cache->kobj) { 573 kfd_remove_sysfs_file(cache->kobj, 574 &cache->attr); 575 cache->kobj = NULL; 576 } 577 kobject_del(dev->kobj_cache); 578 kobject_put(dev->kobj_cache); 579 dev->kobj_cache = NULL; 580 } 581 582 if (dev->kobj_mem) { 583 list_for_each_entry(mem, &dev->mem_props, list) 584 if (mem->kobj) { 585 kfd_remove_sysfs_file(mem->kobj, &mem->attr); 586 mem->kobj = NULL; 587 } 588 kobject_del(dev->kobj_mem); 589 kobject_put(dev->kobj_mem); 590 dev->kobj_mem = NULL; 591 } 592 593 if (dev->kobj_perf) { 594 list_for_each_entry(perf, &dev->perf_props, list) { 595 kfree(perf->attr_group); 596 perf->attr_group = NULL; 597 } 598 kobject_del(dev->kobj_perf); 599 kobject_put(dev->kobj_perf); 600 dev->kobj_perf = NULL; 601 } 602 603 if (dev->kobj_node) { 604 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid); 605 sysfs_remove_file(dev->kobj_node, &dev->attr_name); 606 sysfs_remove_file(dev->kobj_node, &dev->attr_props); 607 kobject_del(dev->kobj_node); 608 kobject_put(dev->kobj_node); 609 dev->kobj_node = NULL; 610 } 611 } 612 613 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev, 614 uint32_t id) 615 { 616 struct kfd_iolink_properties *iolink; 617 struct kfd_cache_properties *cache; 618 struct kfd_mem_properties *mem; 619 struct kfd_perf_properties *perf; 620 int ret; 621 uint32_t i, num_attrs; 622 struct attribute **attrs; 623 624 if (WARN_ON(dev->kobj_node)) 625 return -EEXIST; 626 627 /* 628 * Creating the sysfs folders 629 */ 630 dev->kobj_node = kfd_alloc_struct(dev->kobj_node); 631 if (!dev->kobj_node) 632 return -ENOMEM; 633 634 ret = kobject_init_and_add(dev->kobj_node, &node_type, 635 sys_props.kobj_nodes, "%d", id); 636 if (ret < 0) 637 return ret; 638 639 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node); 640 if (!dev->kobj_mem) 641 return -ENOMEM; 642 643 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node); 644 if (!dev->kobj_cache) 645 return -ENOMEM; 646 647 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node); 648 if (!dev->kobj_iolink) 649 return -ENOMEM; 650 651 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node); 652 if (!dev->kobj_perf) 653 return -ENOMEM; 654 655 /* 656 * Creating sysfs files for node properties 657 */ 658 dev->attr_gpuid.name = "gpu_id"; 659 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE; 660 sysfs_attr_init(&dev->attr_gpuid); 661 dev->attr_name.name = "name"; 662 dev->attr_name.mode = KFD_SYSFS_FILE_MODE; 663 sysfs_attr_init(&dev->attr_name); 664 dev->attr_props.name = "properties"; 665 dev->attr_props.mode = KFD_SYSFS_FILE_MODE; 666 sysfs_attr_init(&dev->attr_props); 667 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid); 668 if (ret < 0) 669 return ret; 670 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name); 671 if (ret < 0) 672 return ret; 673 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props); 674 if (ret < 0) 675 return ret; 676 677 i = 0; 678 list_for_each_entry(mem, &dev->mem_props, list) { 679 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 680 if (!mem->kobj) 681 return -ENOMEM; 682 ret = kobject_init_and_add(mem->kobj, &mem_type, 683 dev->kobj_mem, "%d", i); 684 if (ret < 0) 685 return ret; 686 687 mem->attr.name = "properties"; 688 mem->attr.mode = KFD_SYSFS_FILE_MODE; 689 sysfs_attr_init(&mem->attr); 690 ret = sysfs_create_file(mem->kobj, &mem->attr); 691 if (ret < 0) 692 return ret; 693 i++; 694 } 695 696 i = 0; 697 list_for_each_entry(cache, &dev->cache_props, list) { 698 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 699 if (!cache->kobj) 700 return -ENOMEM; 701 ret = kobject_init_and_add(cache->kobj, &cache_type, 702 dev->kobj_cache, "%d", i); 703 if (ret < 0) 704 return ret; 705 706 cache->attr.name = "properties"; 707 cache->attr.mode = KFD_SYSFS_FILE_MODE; 708 sysfs_attr_init(&cache->attr); 709 ret = sysfs_create_file(cache->kobj, &cache->attr); 710 if (ret < 0) 711 return ret; 712 i++; 713 } 714 715 i = 0; 716 list_for_each_entry(iolink, &dev->io_link_props, list) { 717 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); 718 if (!iolink->kobj) 719 return -ENOMEM; 720 ret = kobject_init_and_add(iolink->kobj, &iolink_type, 721 dev->kobj_iolink, "%d", i); 722 if (ret < 0) 723 return ret; 724 725 iolink->attr.name = "properties"; 726 iolink->attr.mode = KFD_SYSFS_FILE_MODE; 727 sysfs_attr_init(&iolink->attr); 728 ret = sysfs_create_file(iolink->kobj, &iolink->attr); 729 if (ret < 0) 730 return ret; 731 i++; 732 } 733 734 /* All hardware blocks have the same number of attributes. */ 735 num_attrs = ARRAY_SIZE(perf_attr_iommu); 736 list_for_each_entry(perf, &dev->perf_props, list) { 737 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr) 738 * num_attrs + sizeof(struct attribute_group), 739 GFP_KERNEL); 740 if (!perf->attr_group) 741 return -ENOMEM; 742 743 attrs = (struct attribute **)(perf->attr_group + 1); 744 if (!strcmp(perf->block_name, "iommu")) { 745 /* Information of IOMMU's num_counters and counter_ids is shown 746 * under /sys/bus/event_source/devices/amd_iommu. We don't 747 * duplicate here. 748 */ 749 perf_attr_iommu[0].data = perf->max_concurrent; 750 for (i = 0; i < num_attrs; i++) 751 attrs[i] = &perf_attr_iommu[i].attr.attr; 752 } 753 perf->attr_group->name = perf->block_name; 754 perf->attr_group->attrs = attrs; 755 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group); 756 if (ret < 0) 757 return ret; 758 } 759 760 return 0; 761 } 762 763 /* Called with write topology lock acquired */ 764 static int kfd_build_sysfs_node_tree(void) 765 { 766 struct kfd_topology_device *dev; 767 int ret; 768 uint32_t i = 0; 769 770 list_for_each_entry(dev, &topology_device_list, list) { 771 ret = kfd_build_sysfs_node_entry(dev, i); 772 if (ret < 0) 773 return ret; 774 i++; 775 } 776 777 return 0; 778 } 779 780 /* Called with write topology lock acquired */ 781 static void kfd_remove_sysfs_node_tree(void) 782 { 783 struct kfd_topology_device *dev; 784 785 list_for_each_entry(dev, &topology_device_list, list) 786 kfd_remove_sysfs_node_entry(dev); 787 } 788 789 static int kfd_topology_update_sysfs(void) 790 { 791 int ret; 792 793 pr_info("Creating topology SYSFS entries\n"); 794 if (!sys_props.kobj_topology) { 795 sys_props.kobj_topology = 796 kfd_alloc_struct(sys_props.kobj_topology); 797 if (!sys_props.kobj_topology) 798 return -ENOMEM; 799 800 ret = kobject_init_and_add(sys_props.kobj_topology, 801 &sysprops_type, &kfd_device->kobj, 802 "topology"); 803 if (ret < 0) 804 return ret; 805 806 sys_props.kobj_nodes = kobject_create_and_add("nodes", 807 sys_props.kobj_topology); 808 if (!sys_props.kobj_nodes) 809 return -ENOMEM; 810 811 sys_props.attr_genid.name = "generation_id"; 812 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE; 813 sysfs_attr_init(&sys_props.attr_genid); 814 ret = sysfs_create_file(sys_props.kobj_topology, 815 &sys_props.attr_genid); 816 if (ret < 0) 817 return ret; 818 819 sys_props.attr_props.name = "system_properties"; 820 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE; 821 sysfs_attr_init(&sys_props.attr_props); 822 ret = sysfs_create_file(sys_props.kobj_topology, 823 &sys_props.attr_props); 824 if (ret < 0) 825 return ret; 826 } 827 828 kfd_remove_sysfs_node_tree(); 829 830 return kfd_build_sysfs_node_tree(); 831 } 832 833 static void kfd_topology_release_sysfs(void) 834 { 835 kfd_remove_sysfs_node_tree(); 836 if (sys_props.kobj_topology) { 837 sysfs_remove_file(sys_props.kobj_topology, 838 &sys_props.attr_genid); 839 sysfs_remove_file(sys_props.kobj_topology, 840 &sys_props.attr_props); 841 if (sys_props.kobj_nodes) { 842 kobject_del(sys_props.kobj_nodes); 843 kobject_put(sys_props.kobj_nodes); 844 sys_props.kobj_nodes = NULL; 845 } 846 kobject_del(sys_props.kobj_topology); 847 kobject_put(sys_props.kobj_topology); 848 sys_props.kobj_topology = NULL; 849 } 850 } 851 852 /* Called with write topology_lock acquired */ 853 static void kfd_topology_update_device_list(struct list_head *temp_list, 854 struct list_head *master_list) 855 { 856 while (!list_empty(temp_list)) { 857 list_move_tail(temp_list->next, master_list); 858 sys_props.num_devices++; 859 } 860 } 861 862 static void kfd_debug_print_topology(void) 863 { 864 struct kfd_topology_device *dev; 865 866 down_read(&topology_lock); 867 868 dev = list_last_entry(&topology_device_list, 869 struct kfd_topology_device, list); 870 if (dev) { 871 if (dev->node_props.cpu_cores_count && 872 dev->node_props.simd_count) { 873 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n", 874 dev->node_props.device_id, 875 dev->node_props.vendor_id); 876 } else if (dev->node_props.cpu_cores_count) 877 pr_info("Topology: Add CPU node\n"); 878 else if (dev->node_props.simd_count) 879 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n", 880 dev->node_props.device_id, 881 dev->node_props.vendor_id); 882 } 883 up_read(&topology_lock); 884 } 885 886 /* Helper function for intializing platform_xx members of 887 * kfd_system_properties. Uses OEM info from the last CPU/APU node. 888 */ 889 static void kfd_update_system_properties(void) 890 { 891 struct kfd_topology_device *dev; 892 893 down_read(&topology_lock); 894 dev = list_last_entry(&topology_device_list, 895 struct kfd_topology_device, list); 896 if (dev) { 897 sys_props.platform_id = 898 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK; 899 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id); 900 sys_props.platform_rev = dev->oem_revision; 901 } 902 up_read(&topology_lock); 903 } 904 905 static void find_system_memory(const struct dmi_header *dm, 906 void *private) 907 { 908 struct kfd_mem_properties *mem; 909 u16 mem_width, mem_clock; 910 struct kfd_topology_device *kdev = 911 (struct kfd_topology_device *)private; 912 const u8 *dmi_data = (const u8 *)(dm + 1); 913 914 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) { 915 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6)); 916 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11)); 917 list_for_each_entry(mem, &kdev->mem_props, list) { 918 if (mem_width != 0xFFFF && mem_width != 0) 919 mem->width = mem_width; 920 if (mem_clock != 0) 921 mem->mem_clk_max = mem_clock; 922 } 923 } 924 } 925 926 /* 927 * Performance counters information is not part of CRAT but we would like to 928 * put them in the sysfs under topology directory for Thunk to get the data. 929 * This function is called before updating the sysfs. 930 */ 931 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev) 932 { 933 /* These are the only counters supported so far */ 934 return kfd_iommu_add_perf_counters(kdev); 935 } 936 937 /* kfd_add_non_crat_information - Add information that is not currently 938 * defined in CRAT but is necessary for KFD topology 939 * @dev - topology device to which addition info is added 940 */ 941 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev) 942 { 943 /* Check if CPU only node. */ 944 if (!kdev->gpu) { 945 /* Add system memory information */ 946 dmi_walk(find_system_memory, kdev); 947 } 948 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */ 949 } 950 951 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices. 952 * Ignore CRAT for all other devices. AMD APU is identified if both CPU 953 * and GPU cores are present. 954 * @device_list - topology device list created by parsing ACPI CRAT table. 955 * @return - TRUE if invalid, FALSE is valid. 956 */ 957 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list) 958 { 959 struct kfd_topology_device *dev; 960 961 list_for_each_entry(dev, device_list, list) { 962 if (dev->node_props.cpu_cores_count && 963 dev->node_props.simd_count) 964 return false; 965 } 966 pr_info("Ignoring ACPI CRAT on non-APU system\n"); 967 return true; 968 } 969 970 int kfd_topology_init(void) 971 { 972 void *crat_image = NULL; 973 size_t image_size = 0; 974 int ret; 975 struct list_head temp_topology_device_list; 976 int cpu_only_node = 0; 977 struct kfd_topology_device *kdev; 978 int proximity_domain; 979 980 /* topology_device_list - Master list of all topology devices 981 * temp_topology_device_list - temporary list created while parsing CRAT 982 * or VCRAT. Once parsing is complete the contents of list is moved to 983 * topology_device_list 984 */ 985 986 /* Initialize the head for the both the lists */ 987 INIT_LIST_HEAD(&topology_device_list); 988 INIT_LIST_HEAD(&temp_topology_device_list); 989 init_rwsem(&topology_lock); 990 991 memset(&sys_props, 0, sizeof(sys_props)); 992 993 /* Proximity domains in ACPI CRAT tables start counting at 994 * 0. The same should be true for virtual CRAT tables created 995 * at this stage. GPUs added later in kfd_topology_add_device 996 * use a counter. 997 */ 998 proximity_domain = 0; 999 1000 /* 1001 * Get the CRAT image from the ACPI. If ACPI doesn't have one 1002 * or if ACPI CRAT is invalid create a virtual CRAT. 1003 * NOTE: The current implementation expects all AMD APUs to have 1004 * CRAT. If no CRAT is available, it is assumed to be a CPU 1005 */ 1006 ret = kfd_create_crat_image_acpi(&crat_image, &image_size); 1007 if (!ret) { 1008 ret = kfd_parse_crat_table(crat_image, 1009 &temp_topology_device_list, 1010 proximity_domain); 1011 if (ret || 1012 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) { 1013 kfd_release_topology_device_list( 1014 &temp_topology_device_list); 1015 kfd_destroy_crat_image(crat_image); 1016 crat_image = NULL; 1017 } 1018 } 1019 1020 if (!crat_image) { 1021 ret = kfd_create_crat_image_virtual(&crat_image, &image_size, 1022 COMPUTE_UNIT_CPU, NULL, 1023 proximity_domain); 1024 cpu_only_node = 1; 1025 if (ret) { 1026 pr_err("Error creating VCRAT table for CPU\n"); 1027 return ret; 1028 } 1029 1030 ret = kfd_parse_crat_table(crat_image, 1031 &temp_topology_device_list, 1032 proximity_domain); 1033 if (ret) { 1034 pr_err("Error parsing VCRAT table for CPU\n"); 1035 goto err; 1036 } 1037 } 1038 1039 kdev = list_first_entry(&temp_topology_device_list, 1040 struct kfd_topology_device, list); 1041 kfd_add_perf_to_topology(kdev); 1042 1043 down_write(&topology_lock); 1044 kfd_topology_update_device_list(&temp_topology_device_list, 1045 &topology_device_list); 1046 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1); 1047 ret = kfd_topology_update_sysfs(); 1048 up_write(&topology_lock); 1049 1050 if (!ret) { 1051 sys_props.generation_count++; 1052 kfd_update_system_properties(); 1053 kfd_debug_print_topology(); 1054 pr_info("Finished initializing topology\n"); 1055 } else 1056 pr_err("Failed to update topology in sysfs ret=%d\n", ret); 1057 1058 /* For nodes with GPU, this information gets added 1059 * when GPU is detected (kfd_topology_add_device). 1060 */ 1061 if (cpu_only_node) { 1062 /* Add additional information to CPU only node created above */ 1063 down_write(&topology_lock); 1064 kdev = list_first_entry(&topology_device_list, 1065 struct kfd_topology_device, list); 1066 up_write(&topology_lock); 1067 kfd_add_non_crat_information(kdev); 1068 } 1069 1070 err: 1071 kfd_destroy_crat_image(crat_image); 1072 return ret; 1073 } 1074 1075 void kfd_topology_shutdown(void) 1076 { 1077 down_write(&topology_lock); 1078 kfd_topology_release_sysfs(); 1079 kfd_release_live_view(); 1080 up_write(&topology_lock); 1081 } 1082 1083 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu) 1084 { 1085 uint32_t hashout; 1086 uint32_t buf[7]; 1087 uint64_t local_mem_size; 1088 int i; 1089 struct kfd_local_mem_info local_mem_info; 1090 1091 if (!gpu) 1092 return 0; 1093 1094 amdgpu_amdkfd_get_local_mem_info(gpu->kgd, &local_mem_info); 1095 1096 local_mem_size = local_mem_info.local_mem_size_private + 1097 local_mem_info.local_mem_size_public; 1098 1099 buf[0] = gpu->pdev->devfn; 1100 buf[1] = gpu->pdev->subsystem_vendor | 1101 (gpu->pdev->subsystem_device << 16); 1102 buf[2] = pci_domain_nr(gpu->pdev->bus); 1103 buf[3] = gpu->pdev->device; 1104 buf[4] = gpu->pdev->bus->number; 1105 buf[5] = lower_32_bits(local_mem_size); 1106 buf[6] = upper_32_bits(local_mem_size); 1107 1108 for (i = 0, hashout = 0; i < 7; i++) 1109 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH); 1110 1111 return hashout; 1112 } 1113 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If 1114 * the GPU device is not already present in the topology device 1115 * list then return NULL. This means a new topology device has to 1116 * be created for this GPU. 1117 */ 1118 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) 1119 { 1120 struct kfd_topology_device *dev; 1121 struct kfd_topology_device *out_dev = NULL; 1122 struct kfd_mem_properties *mem; 1123 struct kfd_cache_properties *cache; 1124 struct kfd_iolink_properties *iolink; 1125 1126 down_write(&topology_lock); 1127 list_for_each_entry(dev, &topology_device_list, list) { 1128 /* Discrete GPUs need their own topology device list 1129 * entries. Don't assign them to CPU/APU nodes. 1130 */ 1131 if (!gpu->device_info->needs_iommu_device && 1132 dev->node_props.cpu_cores_count) 1133 continue; 1134 1135 if (!dev->gpu && (dev->node_props.simd_count > 0)) { 1136 dev->gpu = gpu; 1137 out_dev = dev; 1138 1139 list_for_each_entry(mem, &dev->mem_props, list) 1140 mem->gpu = dev->gpu; 1141 list_for_each_entry(cache, &dev->cache_props, list) 1142 cache->gpu = dev->gpu; 1143 list_for_each_entry(iolink, &dev->io_link_props, list) 1144 iolink->gpu = dev->gpu; 1145 break; 1146 } 1147 } 1148 up_write(&topology_lock); 1149 return out_dev; 1150 } 1151 1152 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival) 1153 { 1154 /* 1155 * TODO: Generate an event for thunk about the arrival/removal 1156 * of the GPU 1157 */ 1158 } 1159 1160 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info, 1161 * patch this after CRAT parsing. 1162 */ 1163 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev) 1164 { 1165 struct kfd_mem_properties *mem; 1166 struct kfd_local_mem_info local_mem_info; 1167 1168 if (!dev) 1169 return; 1170 1171 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with 1172 * single bank of VRAM local memory. 1173 * for dGPUs - VCRAT reports only one bank of Local Memory 1174 * for APUs - If CRAT from ACPI reports more than one bank, then 1175 * all the banks will report the same mem_clk_max information 1176 */ 1177 amdgpu_amdkfd_get_local_mem_info(dev->gpu->kgd, &local_mem_info); 1178 1179 list_for_each_entry(mem, &dev->mem_props, list) 1180 mem->mem_clk_max = local_mem_info.mem_clk_max; 1181 } 1182 1183 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev) 1184 { 1185 struct kfd_iolink_properties *link, *cpu_link; 1186 struct kfd_topology_device *cpu_dev; 1187 uint32_t cap; 1188 uint32_t cpu_flag = CRAT_IOLINK_FLAGS_ENABLED; 1189 uint32_t flag = CRAT_IOLINK_FLAGS_ENABLED; 1190 1191 if (!dev || !dev->gpu) 1192 return; 1193 1194 pcie_capability_read_dword(dev->gpu->pdev, 1195 PCI_EXP_DEVCAP2, &cap); 1196 1197 if (!(cap & (PCI_EXP_DEVCAP2_ATOMIC_COMP32 | 1198 PCI_EXP_DEVCAP2_ATOMIC_COMP64))) 1199 cpu_flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1200 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1201 1202 if (!dev->gpu->pci_atomic_requested || 1203 dev->gpu->device_info->asic_family == CHIP_HAWAII) 1204 flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT | 1205 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT; 1206 1207 /* GPU only creates direct links so apply flags setting to all */ 1208 list_for_each_entry(link, &dev->io_link_props, list) { 1209 link->flags = flag; 1210 cpu_dev = kfd_topology_device_by_proximity_domain( 1211 link->node_to); 1212 if (cpu_dev) { 1213 list_for_each_entry(cpu_link, 1214 &cpu_dev->io_link_props, list) 1215 if (cpu_link->node_to == link->node_from) 1216 cpu_link->flags = cpu_flag; 1217 } 1218 } 1219 } 1220 1221 int kfd_topology_add_device(struct kfd_dev *gpu) 1222 { 1223 uint32_t gpu_id; 1224 struct kfd_topology_device *dev; 1225 struct kfd_cu_info cu_info; 1226 int res = 0; 1227 struct list_head temp_topology_device_list; 1228 void *crat_image = NULL; 1229 size_t image_size = 0; 1230 int proximity_domain; 1231 struct amdgpu_ras *ctx; 1232 1233 INIT_LIST_HEAD(&temp_topology_device_list); 1234 1235 gpu_id = kfd_generate_gpu_id(gpu); 1236 1237 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id); 1238 1239 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain); 1240 1241 /* Check to see if this gpu device exists in the topology_device_list. 1242 * If so, assign the gpu to that device, 1243 * else create a Virtual CRAT for this gpu device and then parse that 1244 * CRAT to create a new topology device. Once created assign the gpu to 1245 * that topology device 1246 */ 1247 dev = kfd_assign_gpu(gpu); 1248 if (!dev) { 1249 res = kfd_create_crat_image_virtual(&crat_image, &image_size, 1250 COMPUTE_UNIT_GPU, gpu, 1251 proximity_domain); 1252 if (res) { 1253 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n", 1254 gpu_id); 1255 return res; 1256 } 1257 res = kfd_parse_crat_table(crat_image, 1258 &temp_topology_device_list, 1259 proximity_domain); 1260 if (res) { 1261 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n", 1262 gpu_id); 1263 goto err; 1264 } 1265 1266 down_write(&topology_lock); 1267 kfd_topology_update_device_list(&temp_topology_device_list, 1268 &topology_device_list); 1269 1270 /* Update the SYSFS tree, since we added another topology 1271 * device 1272 */ 1273 res = kfd_topology_update_sysfs(); 1274 up_write(&topology_lock); 1275 1276 if (!res) 1277 sys_props.generation_count++; 1278 else 1279 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n", 1280 gpu_id, res); 1281 dev = kfd_assign_gpu(gpu); 1282 if (WARN_ON(!dev)) { 1283 res = -ENODEV; 1284 goto err; 1285 } 1286 } 1287 1288 dev->gpu_id = gpu_id; 1289 gpu->id = gpu_id; 1290 1291 /* TODO: Move the following lines to function 1292 * kfd_add_non_crat_information 1293 */ 1294 1295 /* Fill-in additional information that is not available in CRAT but 1296 * needed for the topology 1297 */ 1298 1299 amdgpu_amdkfd_get_cu_info(dev->gpu->kgd, &cu_info); 1300 1301 strncpy(dev->node_props.name, gpu->device_info->asic_name, 1302 KFD_TOPOLOGY_PUBLIC_NAME_SIZE); 1303 1304 dev->node_props.simd_arrays_per_engine = 1305 cu_info.num_shader_arrays_per_engine; 1306 1307 dev->node_props.vendor_id = gpu->pdev->vendor; 1308 dev->node_props.device_id = gpu->pdev->device; 1309 dev->node_props.location_id = pci_dev_id(gpu->pdev); 1310 dev->node_props.max_engine_clk_fcompute = 1311 amdgpu_amdkfd_get_max_engine_clock_in_mhz(dev->gpu->kgd); 1312 dev->node_props.max_engine_clk_ccompute = 1313 cpufreq_quick_get_max(0) / 1000; 1314 dev->node_props.drm_render_minor = 1315 gpu->shared_resources.drm_render_minor; 1316 1317 dev->node_props.hive_id = gpu->hive_id; 1318 dev->node_props.num_sdma_engines = gpu->device_info->num_sdma_engines; 1319 dev->node_props.num_sdma_xgmi_engines = 1320 gpu->device_info->num_xgmi_sdma_engines; 1321 dev->node_props.num_sdma_queues_per_engine = 1322 gpu->device_info->num_sdma_queues_per_engine; 1323 dev->node_props.num_gws = (hws_gws_support && 1324 dev->gpu->dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) ? 1325 amdgpu_amdkfd_get_num_gws(dev->gpu->kgd) : 0; 1326 dev->node_props.num_cp_queues = get_queues_num(dev->gpu->dqm); 1327 1328 kfd_fill_mem_clk_max_info(dev); 1329 kfd_fill_iolink_non_crat_info(dev); 1330 1331 switch (dev->gpu->device_info->asic_family) { 1332 case CHIP_KAVERI: 1333 case CHIP_HAWAII: 1334 case CHIP_TONGA: 1335 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 << 1336 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1337 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1338 break; 1339 case CHIP_CARRIZO: 1340 case CHIP_FIJI: 1341 case CHIP_POLARIS10: 1342 case CHIP_POLARIS11: 1343 case CHIP_POLARIS12: 1344 case CHIP_VEGAM: 1345 pr_debug("Adding doorbell packet type capability\n"); 1346 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 << 1347 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1348 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1349 break; 1350 case CHIP_VEGA10: 1351 case CHIP_VEGA12: 1352 case CHIP_VEGA20: 1353 case CHIP_RAVEN: 1354 case CHIP_RENOIR: 1355 case CHIP_ARCTURUS: 1356 case CHIP_NAVI10: 1357 case CHIP_NAVI12: 1358 case CHIP_NAVI14: 1359 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 << 1360 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) & 1361 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK); 1362 break; 1363 default: 1364 WARN(1, "Unexpected ASIC family %u", 1365 dev->gpu->device_info->asic_family); 1366 } 1367 1368 /* 1369 * Overwrite ATS capability according to needs_iommu_device to fix 1370 * potential missing corresponding bit in CRAT of BIOS. 1371 */ 1372 if (dev->gpu->device_info->needs_iommu_device) 1373 dev->node_props.capability |= HSA_CAP_ATS_PRESENT; 1374 else 1375 dev->node_props.capability &= ~HSA_CAP_ATS_PRESENT; 1376 1377 /* Fix errors in CZ CRAT. 1378 * simd_count: Carrizo CRAT reports wrong simd_count, probably 1379 * because it doesn't consider masked out CUs 1380 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd 1381 */ 1382 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) { 1383 dev->node_props.simd_count = 1384 cu_info.simd_per_cu * cu_info.cu_active_number; 1385 dev->node_props.max_waves_per_simd = 10; 1386 } 1387 1388 ctx = amdgpu_ras_get_context((struct amdgpu_device *)(dev->gpu->kgd)); 1389 if (ctx) { 1390 /* kfd only concerns sram ecc on GFX/SDMA and HBM ecc on UMC */ 1391 dev->node_props.capability |= 1392 (((ctx->features & BIT(AMDGPU_RAS_BLOCK__SDMA)) != 0) || 1393 ((ctx->features & BIT(AMDGPU_RAS_BLOCK__GFX)) != 0)) ? 1394 HSA_CAP_SRAM_EDCSUPPORTED : 0; 1395 dev->node_props.capability |= ((ctx->features & BIT(AMDGPU_RAS_BLOCK__UMC)) != 0) ? 1396 HSA_CAP_MEM_EDCSUPPORTED : 0; 1397 1398 dev->node_props.capability |= (ctx->features != 0) ? 1399 HSA_CAP_RASEVENTNOTIFY : 0; 1400 } 1401 1402 kfd_debug_print_topology(); 1403 1404 if (!res) 1405 kfd_notify_gpu_change(gpu_id, 1); 1406 err: 1407 kfd_destroy_crat_image(crat_image); 1408 return res; 1409 } 1410 1411 int kfd_topology_remove_device(struct kfd_dev *gpu) 1412 { 1413 struct kfd_topology_device *dev, *tmp; 1414 uint32_t gpu_id; 1415 int res = -ENODEV; 1416 1417 down_write(&topology_lock); 1418 1419 list_for_each_entry_safe(dev, tmp, &topology_device_list, list) 1420 if (dev->gpu == gpu) { 1421 gpu_id = dev->gpu_id; 1422 kfd_remove_sysfs_node_entry(dev); 1423 kfd_release_topology_device(dev); 1424 sys_props.num_devices--; 1425 res = 0; 1426 if (kfd_topology_update_sysfs() < 0) 1427 kfd_topology_release_sysfs(); 1428 break; 1429 } 1430 1431 up_write(&topology_lock); 1432 1433 if (!res) 1434 kfd_notify_gpu_change(gpu_id, 0); 1435 1436 return res; 1437 } 1438 1439 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD 1440 * topology. If GPU device is found @idx, then valid kfd_dev pointer is 1441 * returned through @kdev 1442 * Return - 0: On success (@kdev will be NULL for non GPU nodes) 1443 * -1: If end of list 1444 */ 1445 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev) 1446 { 1447 1448 struct kfd_topology_device *top_dev; 1449 uint8_t device_idx = 0; 1450 1451 *kdev = NULL; 1452 down_read(&topology_lock); 1453 1454 list_for_each_entry(top_dev, &topology_device_list, list) { 1455 if (device_idx == idx) { 1456 *kdev = top_dev->gpu; 1457 up_read(&topology_lock); 1458 return 0; 1459 } 1460 1461 device_idx++; 1462 } 1463 1464 up_read(&topology_lock); 1465 1466 return -1; 1467 1468 } 1469 1470 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask) 1471 { 1472 int first_cpu_of_numa_node; 1473 1474 if (!cpumask || cpumask == cpu_none_mask) 1475 return -1; 1476 first_cpu_of_numa_node = cpumask_first(cpumask); 1477 if (first_cpu_of_numa_node >= nr_cpu_ids) 1478 return -1; 1479 #ifdef CONFIG_X86_64 1480 return cpu_data(first_cpu_of_numa_node).apicid; 1481 #else 1482 return first_cpu_of_numa_node; 1483 #endif 1484 } 1485 1486 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor 1487 * of the given NUMA node (numa_node_id) 1488 * Return -1 on failure 1489 */ 1490 int kfd_numa_node_to_apic_id(int numa_node_id) 1491 { 1492 if (numa_node_id == -1) { 1493 pr_warn("Invalid NUMA Node. Use online CPU mask\n"); 1494 return kfd_cpumask_to_apic_id(cpu_online_mask); 1495 } 1496 return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id)); 1497 } 1498 1499 #if defined(CONFIG_DEBUG_FS) 1500 1501 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data) 1502 { 1503 struct kfd_topology_device *dev; 1504 unsigned int i = 0; 1505 int r = 0; 1506 1507 down_read(&topology_lock); 1508 1509 list_for_each_entry(dev, &topology_device_list, list) { 1510 if (!dev->gpu) { 1511 i++; 1512 continue; 1513 } 1514 1515 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1516 r = dqm_debugfs_hqds(m, dev->gpu->dqm); 1517 if (r) 1518 break; 1519 } 1520 1521 up_read(&topology_lock); 1522 1523 return r; 1524 } 1525 1526 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data) 1527 { 1528 struct kfd_topology_device *dev; 1529 unsigned int i = 0; 1530 int r = 0; 1531 1532 down_read(&topology_lock); 1533 1534 list_for_each_entry(dev, &topology_device_list, list) { 1535 if (!dev->gpu) { 1536 i++; 1537 continue; 1538 } 1539 1540 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id); 1541 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets); 1542 if (r) 1543 break; 1544 } 1545 1546 up_read(&topology_lock); 1547 1548 return r; 1549 } 1550 1551 #endif 1552
Indexes created Mon Sep 22 05:09:51 GMT 2025