drivers/gpu/drm/amd/amdkfd/kfd_topology.c

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include <linux/types.h>
  24 #include <linux/kernel.h>
  25 #include <linux/pci.h>
  26 #include <linux/errno.h>
  27 #include <linux/acpi.h>
  28 #include <linux/hash.h>
  29 #include <linux/cpufreq.h>
  30 #include <linux/log2.h>
  31 #include <linux/dmi.h>
  32 #include <linux/atomic.h>
  33
  34 #include "kfd_priv.h"
  35 #include "kfd_crat.h"
  36 #include "kfd_topology.h"
  37 #include "kfd_device_queue_manager.h"
  38 #include "kfd_iommu.h"
  39 #include "amdgpu_amdkfd.h"
  40 #include "amdgpu_ras.h"
  41
  42 /* topology_device_list - Master list of all topology devices */
  43 static struct list_head topology_device_list;
  44 static struct kfd_system_properties sys_props;
  45
  46 static DECLARE_RWSEM(topology_lock);
  47 static atomic_t topology_crat_proximity_domain;
  48
  49 struct kfd_topology_device *kfd_topology_device_by_proximity_domain(
  50                                                 uint32_t proximity_domain)
  51 {
  52         struct kfd_topology_device *top_dev;
  53         struct kfd_topology_device *device = NULL;
  54
  55         down_read(&topology_lock);
  56
  57         list_for_each_entry(top_dev, &topology_device_list, list)
  58                 if (top_dev->proximity_domain == proximity_domain) {
  59                         device = top_dev;
  60                         break;
  61                 }
  62
  63         up_read(&topology_lock);
  64
  65         return device;
  66 }
  67
  68 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id)
  69 {
  70         struct kfd_topology_device *top_dev = NULL;
  71         struct kfd_topology_device *ret = NULL;
  72
  73         down_read(&topology_lock);
  74
  75         list_for_each_entry(top_dev, &topology_device_list, list)
  76                 if (top_dev->gpu_id == gpu_id) {
  77                         ret = top_dev;
  78                         break;
  79                 }
  80
  81         up_read(&topology_lock);
  82
  83         return ret;
  84 }
  85
  86 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id)
  87 {
  88         struct kfd_topology_device *top_dev;
  89
  90         top_dev = kfd_topology_device_by_id(gpu_id);
  91         if (!top_dev)
  92                 return NULL;
  93
  94         return top_dev->gpu;
  95 }
  96
  97 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
  98 {
  99         struct kfd_topology_device *top_dev;
 100         struct kfd_dev *device = NULL;
 101
 102         down_read(&topology_lock);
 103
 104         list_for_each_entry(top_dev, &topology_device_list, list)
 105                 if (top_dev->gpu && top_dev->gpu->pdev == pdev) {
 106                         device = top_dev->gpu;
 107                         break;
 108                 }
 109
 110         up_read(&topology_lock);
 111
 112         return device;
 113 }
 114
 115 struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd)
 116 {
 117         struct kfd_topology_device *top_dev;
 118         struct kfd_dev *device = NULL;
 119
 120         down_read(&topology_lock);
 121
 122         list_for_each_entry(top_dev, &topology_device_list, list)
 123                 if (top_dev->gpu && top_dev->gpu->kgd == kgd) {
 124                         device = top_dev->gpu;
 125                         break;
 126                 }
 127
 128         up_read(&topology_lock);
 129
 130         return device;
 131 }
 132
 133 /* Called with write topology_lock acquired */
 134 static void kfd_release_topology_device(struct kfd_topology_device *dev)
 135 {
 136         struct kfd_mem_properties *mem;
 137         struct kfd_cache_properties *cache;
 138         struct kfd_iolink_properties *iolink;
 139         struct kfd_perf_properties *perf;
 140
 141         list_del(&dev->list);
 142
 143         while (dev->mem_props.next != &dev->mem_props) {
 144                 mem = container_of(dev->mem_props.next,
 145                                 struct kfd_mem_properties, list);
 146                 list_del(&mem->list);
 147                 kfree(mem);
 148         }
 149
 150         while (dev->cache_props.next != &dev->cache_props) {
 151                 cache = container_of(dev->cache_props.next,
 152                                 struct kfd_cache_properties, list);
 153                 list_del(&cache->list);
 154                 kfree(cache);
 155         }
 156
 157         while (dev->io_link_props.next != &dev->io_link_props) {
 158                 iolink = container_of(dev->io_link_props.next,
 159                                 struct kfd_iolink_properties, list);
 160                 list_del(&iolink->list);
 161                 kfree(iolink);
 162         }
 163
 164         while (dev->perf_props.next != &dev->perf_props) {
 165                 perf = container_of(dev->perf_props.next,
 166                                 struct kfd_perf_properties, list);
 167                 list_del(&perf->list);
 168                 kfree(perf);
 169         }
 170
 171         kfree(dev);
 172 }
 173
 174 void kfd_release_topology_device_list(struct list_head *device_list)
 175 {
 176         struct kfd_topology_device *dev;
 177
 178         while (!list_empty(device_list)) {
 179                 dev = list_first_entry(device_list,
 180                                        struct kfd_topology_device, list);
 181                 kfd_release_topology_device(dev);
 182         }
 183 }
 184
 185 static void kfd_release_live_view(void)
 186 {
 187         kfd_release_topology_device_list(&topology_device_list);
 188         memset(&sys_props, 0, sizeof(sys_props));
 189 }
 190
 191 struct kfd_topology_device *kfd_create_topology_device(
 192                                 struct list_head *device_list)
 193 {
 194         struct kfd_topology_device *dev;
 195
 196         dev = kfd_alloc_struct(dev);
 197         if (!dev) {
 198                 pr_err("No memory to allocate a topology device");
 199                 return NULL;
 200         }
 201
 202         INIT_LIST_HEAD(&dev->mem_props);
 203         INIT_LIST_HEAD(&dev->cache_props);
 204         INIT_LIST_HEAD(&dev->io_link_props);
 205         INIT_LIST_HEAD(&dev->perf_props);
 206
 207         list_add_tail(&dev->list, device_list);
 208
 209         return dev;
 210 }
 211
 212
 213 #define sysfs_show_gen_prop(buffer, fmt, ...) \
 214                 snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__)
 215 #define sysfs_show_32bit_prop(buffer, name, value) \
 216                 sysfs_show_gen_prop(buffer, "%s %u\n", name, value)
 217 #define sysfs_show_64bit_prop(buffer, name, value) \
 218                 sysfs_show_gen_prop(buffer, "%s %llu\n", name, value)
 219 #define sysfs_show_32bit_val(buffer, value) \
 220                 sysfs_show_gen_prop(buffer, "%u\n", value)
 221 #define sysfs_show_str_val(buffer, value) \
 222                 sysfs_show_gen_prop(buffer, "%s\n", value)
 223
 224 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
 225                 char *buffer)
 226 {
 227         ssize_t ret;
 228
 229         /* Making sure that the buffer is an empty string */
 230         buffer[0] = 0;
 231
 232         if (attr == &sys_props.attr_genid) {
 233                 ret = sysfs_show_32bit_val(buffer, sys_props.generation_count);
 234         } else if (attr == &sys_props.attr_props) {
 235                 sysfs_show_64bit_prop(buffer, "platform_oem",
 236                                 sys_props.platform_oem);
 237                 sysfs_show_64bit_prop(buffer, "platform_id",
 238                                 sys_props.platform_id);
 239                 ret = sysfs_show_64bit_prop(buffer, "platform_rev",
 240                                 sys_props.platform_rev);
 241         } else {
 242                 ret = -EINVAL;
 243         }
 244
 245         return ret;
 246 }
 247
 248 static void kfd_topology_kobj_release(struct kobject *kobj)
 249 {
 250         kfree(kobj);
 251 }
 252
 253 static const struct sysfs_ops sysprops_ops = {
 254         .show = sysprops_show,
 255 };
 256
 257 static struct kobj_type sysprops_type = {
 258         .release = kfd_topology_kobj_release,
 259         .sysfs_ops = &sysprops_ops,
 260 };
 261
 262 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr,
 263                 char *buffer)
 264 {
 265         ssize_t ret;
 266         struct kfd_iolink_properties *iolink;
 267
 268         /* Making sure that the buffer is an empty string */
 269         buffer[0] = 0;
 270
 271         iolink = container_of(attr, struct kfd_iolink_properties, attr);
 272         sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type);
 273         sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj);
 274         sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min);
 275         sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from);
 276         sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to);
 277         sysfs_show_32bit_prop(buffer, "weight", iolink->weight);
 278         sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency);
 279         sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency);
 280         sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth);
 281         sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth);
 282         sysfs_show_32bit_prop(buffer, "recommended_transfer_size",
 283                         iolink->rec_transfer_size);
 284         ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags);
 285
 286         return ret;
 287 }
 288
 289 static const struct sysfs_ops iolink_ops = {
 290         .show = iolink_show,
 291 };
 292
 293 static struct kobj_type iolink_type = {
 294         .release = kfd_topology_kobj_release,
 295         .sysfs_ops = &iolink_ops,
 296 };
 297
 298 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr,
 299                 char *buffer)
 300 {
 301         ssize_t ret;
 302         struct kfd_mem_properties *mem;
 303
 304         /* Making sure that the buffer is an empty string */
 305         buffer[0] = 0;
 306
 307         mem = container_of(attr, struct kfd_mem_properties, attr);
 308         sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type);
 309         sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes);
 310         sysfs_show_32bit_prop(buffer, "flags", mem->flags);
 311         sysfs_show_32bit_prop(buffer, "width", mem->width);
 312         ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max);
 313
 314         return ret;
 315 }
 316
 317 static const struct sysfs_ops mem_ops = {
 318         .show = mem_show,
 319 };
 320
 321 static struct kobj_type mem_type = {
 322         .release = kfd_topology_kobj_release,
 323         .sysfs_ops = &mem_ops,
 324 };
 325
 326 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr,
 327                 char *buffer)
 328 {
 329         ssize_t ret;
 330         uint32_t i, j;
 331         struct kfd_cache_properties *cache;
 332
 333         /* Making sure that the buffer is an empty string */
 334         buffer[0] = 0;
 335
 336         cache = container_of(attr, struct kfd_cache_properties, attr);
 337         sysfs_show_32bit_prop(buffer, "processor_id_low",
 338                         cache->processor_id_low);
 339         sysfs_show_32bit_prop(buffer, "level", cache->cache_level);
 340         sysfs_show_32bit_prop(buffer, "size", cache->cache_size);
 341         sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size);
 342         sysfs_show_32bit_prop(buffer, "cache_lines_per_tag",
 343                         cache->cachelines_per_tag);
 344         sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc);
 345         sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency);
 346         sysfs_show_32bit_prop(buffer, "type", cache->cache_type);
 347         snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer);
 348         for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++)
 349                 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) {
 350                         /* Check each bit */
 351                         if (cache->sibling_map[i] & (1 << j))
 352                                 ret = snprintf(buffer, PAGE_SIZE,
 353                                          "%s%d%s", buffer, 1, ",");
 354                         else
 355                                 ret = snprintf(buffer, PAGE_SIZE,
 356                                          "%s%d%s", buffer, 0, ",");
 357                 }
 358         /* Replace the last "," with end of line */
 359         *(buffer + strlen(buffer) - 1) = 0xA;
 360         return ret;
 361 }
 362
 363 static const struct sysfs_ops cache_ops = {
 364         .show = kfd_cache_show,
 365 };
 366
 367 static struct kobj_type cache_type = {
 368         .release = kfd_topology_kobj_release,
 369         .sysfs_ops = &cache_ops,
 370 };
 371
 372 /****** Sysfs of Performance Counters ******/
 373
 374 struct kfd_perf_attr {
 375         struct kobj_attribute attr;
 376         uint32_t data;
 377 };
 378
 379 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs,
 380                         char *buf)
 381 {
 382         struct kfd_perf_attr *attr;
 383
 384         buf[0] = 0;
 385         attr = container_of(attrs, struct kfd_perf_attr, attr);
 386         if (!attr->data) /* invalid data for PMC */
 387                 return 0;
 388         else
 389                 return sysfs_show_32bit_val(buf, attr->data);
 390 }
 391
 392 #define KFD_PERF_DESC(_name, _data)                     \
 393 {                                                       \
 394         .attr  = __ATTR(_name, 0444, perf_show, NULL),  \
 395         .data = _data,                                  \
 396 }
 397
 398 static struct kfd_perf_attr perf_attr_iommu[] = {
 399         KFD_PERF_DESC(max_concurrent, 0),
 400         KFD_PERF_DESC(num_counters, 0),
 401         KFD_PERF_DESC(counter_ids, 0),
 402 };
 403 /****************************************/
 404
 405 static ssize_t node_show(struct kobject *kobj, struct attribute *attr,
 406                 char *buffer)
 407 {
 408         struct kfd_topology_device *dev;
 409         char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE];
 410         uint32_t i;
 411         uint32_t log_max_watch_addr;
 412
 413         /* Making sure that the buffer is an empty string */
 414         buffer[0] = 0;
 415
 416         if (strcmp(attr->name, "gpu_id") == 0) {
 417                 dev = container_of(attr, struct kfd_topology_device,
 418                                 attr_gpuid);
 419                 return sysfs_show_32bit_val(buffer, dev->gpu_id);
 420         }
 421
 422         if (strcmp(attr->name, "name") == 0) {
 423                 dev = container_of(attr, struct kfd_topology_device,
 424                                 attr_name);
 425                 for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) {
 426                         public_name[i] =
 427                                         (char)dev->node_props.marketing_name[i];
 428                         if (dev->node_props.marketing_name[i] == 0)
 429                                 break;
 430                 }
 431                 public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0;
 432                 return sysfs_show_str_val(buffer, public_name);
 433         }
 434
 435         dev = container_of(attr, struct kfd_topology_device,
 436                         attr_props);
 437         sysfs_show_32bit_prop(buffer, "cpu_cores_count",
 438                         dev->node_props.cpu_cores_count);
 439         sysfs_show_32bit_prop(buffer, "simd_count",
 440                         dev->node_props.simd_count);
 441         sysfs_show_32bit_prop(buffer, "mem_banks_count",
 442                         dev->node_props.mem_banks_count);
 443         sysfs_show_32bit_prop(buffer, "caches_count",
 444                         dev->node_props.caches_count);
 445         sysfs_show_32bit_prop(buffer, "io_links_count",
 446                         dev->node_props.io_links_count);
 447         sysfs_show_32bit_prop(buffer, "cpu_core_id_base",
 448                         dev->node_props.cpu_core_id_base);
 449         sysfs_show_32bit_prop(buffer, "simd_id_base",
 450                         dev->node_props.simd_id_base);
 451         sysfs_show_32bit_prop(buffer, "max_waves_per_simd",
 452                         dev->node_props.max_waves_per_simd);
 453         sysfs_show_32bit_prop(buffer, "lds_size_in_kb",
 454                         dev->node_props.lds_size_in_kb);
 455         sysfs_show_32bit_prop(buffer, "gds_size_in_kb",
 456                         dev->node_props.gds_size_in_kb);
 457         sysfs_show_32bit_prop(buffer, "wave_front_size",
 458                         dev->node_props.wave_front_size);
 459         sysfs_show_32bit_prop(buffer, "array_count",
 460                         dev->node_props.array_count);
 461         sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine",
 462                         dev->node_props.simd_arrays_per_engine);
 463         sysfs_show_32bit_prop(buffer, "cu_per_simd_array",
 464                         dev->node_props.cu_per_simd_array);
 465         sysfs_show_32bit_prop(buffer, "simd_per_cu",
 466                         dev->node_props.simd_per_cu);
 467         sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu",
 468                         dev->node_props.max_slots_scratch_cu);
 469         sysfs_show_32bit_prop(buffer, "vendor_id",
 470                         dev->node_props.vendor_id);
 471         sysfs_show_32bit_prop(buffer, "device_id",
 472                         dev->node_props.device_id);
 473         sysfs_show_32bit_prop(buffer, "location_id",
 474                         dev->node_props.location_id);
 475         sysfs_show_32bit_prop(buffer, "drm_render_minor",
 476                         dev->node_props.drm_render_minor);
 477         sysfs_show_64bit_prop(buffer, "hive_id",
 478                         dev->node_props.hive_id);
 479
 480         if (dev->gpu) {
 481                 log_max_watch_addr =
 482                         __ilog2_u32(dev->gpu->device_info->num_of_watch_points);
 483
 484                 if (log_max_watch_addr) {
 485                         dev->node_props.capability |=
 486                                         HSA_CAP_WATCH_POINTS_SUPPORTED;
 487
 488                         dev->node_props.capability |=
 489                                 ((log_max_watch_addr <<
 490                                         HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) &
 491                                 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK);
 492                 }
 493
 494                 if (dev->gpu->device_info->asic_family == CHIP_TONGA)
 495                         dev->node_props.capability |=
 496                                         HSA_CAP_AQL_QUEUE_DOUBLE_MAP;
 497
 498                 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute",
 499                         dev->node_props.max_engine_clk_fcompute);
 500
 501                 sysfs_show_64bit_prop(buffer, "local_mem_size",
 502                                 (unsigned long long int) 0);
 503
 504                 sysfs_show_32bit_prop(buffer, "fw_version",
 505                                 dev->gpu->mec_fw_version);
 506                 sysfs_show_32bit_prop(buffer, "capability",
 507                                 dev->node_props.capability);
 508                 sysfs_show_32bit_prop(buffer, "sdma_fw_version",
 509                                 dev->gpu->sdma_fw_version);
 510         }
 511
 512         return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute",
 513                                         cpufreq_quick_get_max(0)/1000);
 514 }
 515
 516 static const struct sysfs_ops node_ops = {
 517         .show = node_show,
 518 };
 519
 520 static struct kobj_type node_type = {
 521         .release = kfd_topology_kobj_release,
 522         .sysfs_ops = &node_ops,
 523 };
 524
 525 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr)
 526 {
 527         sysfs_remove_file(kobj, attr);
 528         kobject_del(kobj);
 529         kobject_put(kobj);
 530 }
 531
 532 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
 533 {
 534         struct kfd_iolink_properties *iolink;
 535         struct kfd_cache_properties *cache;
 536         struct kfd_mem_properties *mem;
 537         struct kfd_perf_properties *perf;
 538
 539         if (dev->kobj_iolink) {
 540                 list_for_each_entry(iolink, &dev->io_link_props, list)
 541                         if (iolink->kobj) {
 542                                 kfd_remove_sysfs_file(iolink->kobj,
 543                                                         &iolink->attr);
 544                                 iolink->kobj = NULL;
 545                         }
 546                 kobject_del(dev->kobj_iolink);
 547                 kobject_put(dev->kobj_iolink);
 548                 dev->kobj_iolink = NULL;
 549         }
 550
 551         if (dev->kobj_cache) {
 552                 list_for_each_entry(cache, &dev->cache_props, list)
 553                         if (cache->kobj) {
 554                                 kfd_remove_sysfs_file(cache->kobj,
 555                                                         &cache->attr);
 556                                 cache->kobj = NULL;
 557                         }
 558                 kobject_del(dev->kobj_cache);
 559                 kobject_put(dev->kobj_cache);
 560                 dev->kobj_cache = NULL;
 561         }
 562
 563         if (dev->kobj_mem) {
 564                 list_for_each_entry(mem, &dev->mem_props, list)
 565                         if (mem->kobj) {
 566                                 kfd_remove_sysfs_file(mem->kobj, &mem->attr);
 567                                 mem->kobj = NULL;
 568                         }
 569                 kobject_del(dev->kobj_mem);
 570                 kobject_put(dev->kobj_mem);
 571                 dev->kobj_mem = NULL;
 572         }
 573
 574         if (dev->kobj_perf) {
 575                 list_for_each_entry(perf, &dev->perf_props, list) {
 576                         kfree(perf->attr_group);
 577                         perf->attr_group = NULL;
 578                 }
 579                 kobject_del(dev->kobj_perf);
 580                 kobject_put(dev->kobj_perf);
 581                 dev->kobj_perf = NULL;
 582         }
 583
 584         if (dev->kobj_node) {
 585                 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid);
 586                 sysfs_remove_file(dev->kobj_node, &dev->attr_name);
 587                 sysfs_remove_file(dev->kobj_node, &dev->attr_props);
 588                 kobject_del(dev->kobj_node);
 589                 kobject_put(dev->kobj_node);
 590                 dev->kobj_node = NULL;
 591         }
 592 }
 593
 594 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
 595                 uint32_t id)
 596 {
 597         struct kfd_iolink_properties *iolink;
 598         struct kfd_cache_properties *cache;
 599         struct kfd_mem_properties *mem;
 600         struct kfd_perf_properties *perf;
 601         int ret;
 602         uint32_t i, num_attrs;
 603         struct attribute **attrs;
 604
 605         if (WARN_ON(dev->kobj_node))
 606                 return -EEXIST;
 607
 608         /*
 609          * Creating the sysfs folders
 610          */
 611         dev->kobj_node = kfd_alloc_struct(dev->kobj_node);
 612         if (!dev->kobj_node)
 613                 return -ENOMEM;
 614
 615         ret = kobject_init_and_add(dev->kobj_node, &node_type,
 616                         sys_props.kobj_nodes, "%d", id);
 617         if (ret < 0)
 618                 return ret;
 619
 620         dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node);
 621         if (!dev->kobj_mem)
 622                 return -ENOMEM;
 623
 624         dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node);
 625         if (!dev->kobj_cache)
 626                 return -ENOMEM;
 627
 628         dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node);
 629         if (!dev->kobj_iolink)
 630                 return -ENOMEM;
 631
 632         dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node);
 633         if (!dev->kobj_perf)
 634                 return -ENOMEM;
 635
 636         /*
 637          * Creating sysfs files for node properties
 638          */
 639         dev->attr_gpuid.name = "gpu_id";
 640         dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE;
 641         sysfs_attr_init(&dev->attr_gpuid);
 642         dev->attr_name.name = "name";
 643         dev->attr_name.mode = KFD_SYSFS_FILE_MODE;
 644         sysfs_attr_init(&dev->attr_name);
 645         dev->attr_props.name = "properties";
 646         dev->attr_props.mode = KFD_SYSFS_FILE_MODE;
 647         sysfs_attr_init(&dev->attr_props);
 648         ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid);
 649         if (ret < 0)
 650                 return ret;
 651         ret = sysfs_create_file(dev->kobj_node, &dev->attr_name);
 652         if (ret < 0)
 653                 return ret;
 654         ret = sysfs_create_file(dev->kobj_node, &dev->attr_props);
 655         if (ret < 0)
 656                 return ret;
 657
 658         i = 0;
 659         list_for_each_entry(mem, &dev->mem_props, list) {
 660                 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 661                 if (!mem->kobj)
 662                         return -ENOMEM;
 663                 ret = kobject_init_and_add(mem->kobj, &mem_type,
 664                                 dev->kobj_mem, "%d", i);
 665                 if (ret < 0)
 666                         return ret;
 667
 668                 mem->attr.name = "properties";
 669                 mem->attr.mode = KFD_SYSFS_FILE_MODE;
 670                 sysfs_attr_init(&mem->attr);
 671                 ret = sysfs_create_file(mem->kobj, &mem->attr);
 672                 if (ret < 0)
 673                         return ret;
 674                 i++;
 675         }
 676
 677         i = 0;
 678         list_for_each_entry(cache, &dev->cache_props, list) {
 679                 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 680                 if (!cache->kobj)
 681                         return -ENOMEM;
 682                 ret = kobject_init_and_add(cache->kobj, &cache_type,
 683                                 dev->kobj_cache, "%d", i);
 684                 if (ret < 0)
 685                         return ret;
 686
 687                 cache->attr.name = "properties";
 688                 cache->attr.mode = KFD_SYSFS_FILE_MODE;
 689                 sysfs_attr_init(&cache->attr);
 690                 ret = sysfs_create_file(cache->kobj, &cache->attr);
 691                 if (ret < 0)
 692                         return ret;
 693                 i++;
 694         }
 695
 696         i = 0;
 697         list_for_each_entry(iolink, &dev->io_link_props, list) {
 698                 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 699                 if (!iolink->kobj)
 700                         return -ENOMEM;
 701                 ret = kobject_init_and_add(iolink->kobj, &iolink_type,
 702                                 dev->kobj_iolink, "%d", i);
 703                 if (ret < 0)
 704                         return ret;
 705
 706                 iolink->attr.name = "properties";
 707                 iolink->attr.mode = KFD_SYSFS_FILE_MODE;
 708                 sysfs_attr_init(&iolink->attr);
 709                 ret = sysfs_create_file(iolink->kobj, &iolink->attr);
 710                 if (ret < 0)
 711                         return ret;
 712                 i++;
 713         }
 714
 715         /* All hardware blocks have the same number of attributes. */
 716         num_attrs = ARRAY_SIZE(perf_attr_iommu);
 717         list_for_each_entry(perf, &dev->perf_props, list) {
 718                 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr)
 719                         * num_attrs + sizeof(struct attribute_group),
 720                         GFP_KERNEL);
 721                 if (!perf->attr_group)
 722                         return -ENOMEM;
 723
 724                 attrs = (struct attribute **)(perf->attr_group + 1);
 725                 if (!strcmp(perf->block_name, "iommu")) {
 726                 /* Information of IOMMU's num_counters and counter_ids is shown
 727                  * under /sys/bus/event_source/devices/amd_iommu. We don't
 728                  * duplicate here.
 729                  */
 730                         perf_attr_iommu[0].data = perf->max_concurrent;
 731                         for (i = 0; i < num_attrs; i++)
 732                                 attrs[i] = &perf_attr_iommu[i].attr.attr;
 733                 }
 734                 perf->attr_group->name = perf->block_name;
 735                 perf->attr_group->attrs = attrs;
 736                 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group);
 737                 if (ret < 0)
 738                         return ret;
 739         }
 740
 741         return 0;
 742 }
 743
 744 /* Called with write topology lock acquired */
 745 static int kfd_build_sysfs_node_tree(void)
 746 {
 747         struct kfd_topology_device *dev;
 748         int ret;
 749         uint32_t i = 0;
 750
 751         list_for_each_entry(dev, &topology_device_list, list) {
 752                 ret = kfd_build_sysfs_node_entry(dev, i);
 753                 if (ret < 0)
 754                         return ret;
 755                 i++;
 756         }
 757
 758         return 0;
 759 }
 760
 761 /* Called with write topology lock acquired */
 762 static void kfd_remove_sysfs_node_tree(void)
 763 {
 764         struct kfd_topology_device *dev;
 765
 766         list_for_each_entry(dev, &topology_device_list, list)
 767                 kfd_remove_sysfs_node_entry(dev);
 768 }
 769
 770 static int kfd_topology_update_sysfs(void)
 771 {
 772         int ret;
 773
 774         pr_info("Creating topology SYSFS entries\n");
 775         if (!sys_props.kobj_topology) {
 776                 sys_props.kobj_topology =
 777                                 kfd_alloc_struct(sys_props.kobj_topology);
 778                 if (!sys_props.kobj_topology)
 779                         return -ENOMEM;
 780
 781                 ret = kobject_init_and_add(sys_props.kobj_topology,
 782                                 &sysprops_type,  &kfd_device->kobj,
 783                                 "topology");
 784                 if (ret < 0)
 785                         return ret;
 786
 787                 sys_props.kobj_nodes = kobject_create_and_add("nodes",
 788                                 sys_props.kobj_topology);
 789                 if (!sys_props.kobj_nodes)
 790                         return -ENOMEM;
 791
 792                 sys_props.attr_genid.name = "generation_id";
 793                 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE;
 794                 sysfs_attr_init(&sys_props.attr_genid);
 795                 ret = sysfs_create_file(sys_props.kobj_topology,
 796                                 &sys_props.attr_genid);
 797                 if (ret < 0)
 798                         return ret;
 799
 800                 sys_props.attr_props.name = "system_properties";
 801                 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE;
 802                 sysfs_attr_init(&sys_props.attr_props);
 803                 ret = sysfs_create_file(sys_props.kobj_topology,
 804                                 &sys_props.attr_props);
 805                 if (ret < 0)
 806                         return ret;
 807         }
 808
 809         kfd_remove_sysfs_node_tree();
 810
 811         return kfd_build_sysfs_node_tree();
 812 }
 813
 814 static void kfd_topology_release_sysfs(void)
 815 {
 816         kfd_remove_sysfs_node_tree();
 817         if (sys_props.kobj_topology) {
 818                 sysfs_remove_file(sys_props.kobj_topology,
 819                                 &sys_props.attr_genid);
 820                 sysfs_remove_file(sys_props.kobj_topology,
 821                                 &sys_props.attr_props);
 822                 if (sys_props.kobj_nodes) {
 823                         kobject_del(sys_props.kobj_nodes);
 824                         kobject_put(sys_props.kobj_nodes);
 825                         sys_props.kobj_nodes = NULL;
 826                 }
 827                 kobject_del(sys_props.kobj_topology);
 828                 kobject_put(sys_props.kobj_topology);
 829                 sys_props.kobj_topology = NULL;
 830         }
 831 }
 832
 833 /* Called with write topology_lock acquired */
 834 static void kfd_topology_update_device_list(struct list_head *temp_list,
 835                                         struct list_head *master_list)
 836 {
 837         while (!list_empty(temp_list)) {
 838                 list_move_tail(temp_list->next, master_list);
 839                 sys_props.num_devices++;
 840         }
 841 }
 842
 843 static void kfd_debug_print_topology(void)
 844 {
 845         struct kfd_topology_device *dev;
 846
 847         down_read(&topology_lock);
 848
 849         dev = list_last_entry(&topology_device_list,
 850                         struct kfd_topology_device, list);
 851         if (dev) {
 852                 if (dev->node_props.cpu_cores_count &&
 853                                 dev->node_props.simd_count) {
 854                         pr_info("Topology: Add APU node [0x%0x:0x%0x]\n",
 855                                 dev->node_props.device_id,
 856                                 dev->node_props.vendor_id);
 857                 } else if (dev->node_props.cpu_cores_count)
 858                         pr_info("Topology: Add CPU node\n");
 859                 else if (dev->node_props.simd_count)
 860                         pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n",
 861                                 dev->node_props.device_id,
 862                                 dev->node_props.vendor_id);
 863         }
 864         up_read(&topology_lock);
 865 }
 866
 867 /* Helper function for intializing platform_xx members of
 868  * kfd_system_properties. Uses OEM info from the last CPU/APU node.
 869  */
 870 static void kfd_update_system_properties(void)
 871 {
 872         struct kfd_topology_device *dev;
 873
 874         down_read(&topology_lock);
 875         dev = list_last_entry(&topology_device_list,
 876                         struct kfd_topology_device, list);
 877         if (dev) {
 878                 sys_props.platform_id =
 879                         (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK;
 880                 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id);
 881                 sys_props.platform_rev = dev->oem_revision;
 882         }
 883         up_read(&topology_lock);
 884 }
 885
 886 static void find_system_memory(const struct dmi_header *dm,
 887         void *private)
 888 {
 889         struct kfd_mem_properties *mem;
 890         u16 mem_width, mem_clock;
 891         struct kfd_topology_device *kdev =
 892                 (struct kfd_topology_device *)private;
 893         const u8 *dmi_data = (const u8 *)(dm + 1);
 894
 895         if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) {
 896                 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6));
 897                 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11));
 898                 list_for_each_entry(mem, &kdev->mem_props, list) {
 899                         if (mem_width != 0xFFFF && mem_width != 0)
 900                                 mem->width = mem_width;
 901                         if (mem_clock != 0)
 902                                 mem->mem_clk_max = mem_clock;
 903                 }
 904         }
 905 }
 906
 907 /*
 908  * Performance counters information is not part of CRAT but we would like to
 909  * put them in the sysfs under topology directory for Thunk to get the data.
 910  * This function is called before updating the sysfs.
 911  */
 912 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev)
 913 {
 914         /* These are the only counters supported so far */
 915         return kfd_iommu_add_perf_counters(kdev);
 916 }
 917
 918 /* kfd_add_non_crat_information - Add information that is not currently
 919  *      defined in CRAT but is necessary for KFD topology
 920  * @dev - topology device to which addition info is added
 921  */
 922 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev)
 923 {
 924         /* Check if CPU only node. */
 925         if (!kdev->gpu) {
 926                 /* Add system memory information */
 927                 dmi_walk(find_system_memory, kdev);
 928         }
 929         /* TODO: For GPU node, rearrange code from kfd_topology_add_device */
 930 }
 931
 932 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices.
 933  *      Ignore CRAT for all other devices. AMD APU is identified if both CPU
 934  *      and GPU cores are present.
 935  * @device_list - topology device list created by parsing ACPI CRAT table.
 936  * @return - TRUE if invalid, FALSE is valid.
 937  */
 938 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list)
 939 {
 940         struct kfd_topology_device *dev;
 941
 942         list_for_each_entry(dev, device_list, list) {
 943                 if (dev->node_props.cpu_cores_count &&
 944                         dev->node_props.simd_count)
 945                         return false;
 946         }
 947         pr_info("Ignoring ACPI CRAT on non-APU system\n");
 948         return true;
 949 }
 950
 951 int kfd_topology_init(void)
 952 {
 953         void *crat_image = NULL;
 954         size_t image_size = 0;
 955         int ret;
 956         struct list_head temp_topology_device_list;
 957         int cpu_only_node = 0;
 958         struct kfd_topology_device *kdev;
 959         int proximity_domain;
 960
 961         /* topology_device_list - Master list of all topology devices
 962          * temp_topology_device_list - temporary list created while parsing CRAT
 963          * or VCRAT. Once parsing is complete the contents of list is moved to
 964          * topology_device_list
 965          */
 966
 967         /* Initialize the head for the both the lists */
 968         INIT_LIST_HEAD(&topology_device_list);
 969         INIT_LIST_HEAD(&temp_topology_device_list);
 970         init_rwsem(&topology_lock);
 971
 972         memset(&sys_props, 0, sizeof(sys_props));
 973
 974         /* Proximity domains in ACPI CRAT tables start counting at
 975          * 0. The same should be true for virtual CRAT tables created
 976          * at this stage. GPUs added later in kfd_topology_add_device
 977          * use a counter.
 978          */
 979         proximity_domain = 0;
 980
 981         /*
 982          * Get the CRAT image from the ACPI. If ACPI doesn't have one
 983          * or if ACPI CRAT is invalid create a virtual CRAT.
 984          * NOTE: The current implementation expects all AMD APUs to have
 985          *      CRAT. If no CRAT is available, it is assumed to be a CPU
 986          */
 987         ret = kfd_create_crat_image_acpi(&crat_image, &image_size);
 988         if (!ret) {
 989                 ret = kfd_parse_crat_table(crat_image,
 990                                            &temp_topology_device_list,
 991                                            proximity_domain);
 992                 if (ret ||
 993                     kfd_is_acpi_crat_invalid(&temp_topology_device_list)) {
 994                         kfd_release_topology_device_list(
 995                                 &temp_topology_device_list);
 996                         kfd_destroy_crat_image(crat_image);
 997                         crat_image = NULL;
 998                 }
 999         }
1000
1001         if (!crat_image) {
1002                 ret = kfd_create_crat_image_virtual(&crat_image, &image_size,
1003                                                     COMPUTE_UNIT_CPU, NULL,
1004                                                     proximity_domain);
1005                 cpu_only_node = 1;
1006                 if (ret) {
1007                         pr_err("Error creating VCRAT table for CPU\n");
1008                         return ret;
1009                 }
1010
1011                 ret = kfd_parse_crat_table(crat_image,
1012                                            &temp_topology_device_list,
1013                                            proximity_domain);
1014                 if (ret) {
1015                         pr_err("Error parsing VCRAT table for CPU\n");
1016                         goto err;
1017                 }
1018         }
1019
1020         kdev = list_first_entry(&temp_topology_device_list,
1021                                 struct kfd_topology_device, list);
1022         kfd_add_perf_to_topology(kdev);
1023
1024         down_write(&topology_lock);
1025         kfd_topology_update_device_list(&temp_topology_device_list,
1026                                         &topology_device_list);
1027         atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1);
1028         ret = kfd_topology_update_sysfs();
1029         up_write(&topology_lock);
1030
1031         if (!ret) {
1032                 sys_props.generation_count++;
1033                 kfd_update_system_properties();
1034                 kfd_debug_print_topology();
1035                 pr_info("Finished initializing topology\n");
1036         } else
1037                 pr_err("Failed to update topology in sysfs ret=%d\n", ret);
1038
1039         /* For nodes with GPU, this information gets added
1040          * when GPU is detected (kfd_topology_add_device).
1041          */
1042         if (cpu_only_node) {
1043                 /* Add additional information to CPU only node created above */
1044                 down_write(&topology_lock);
1045                 kdev = list_first_entry(&topology_device_list,
1046                                 struct kfd_topology_device, list);
1047                 up_write(&topology_lock);
1048                 kfd_add_non_crat_information(kdev);
1049         }
1050
1051 err:
1052         kfd_destroy_crat_image(crat_image);
1053         return ret;
1054 }
1055
1056 void kfd_topology_shutdown(void)
1057 {
1058         down_write(&topology_lock);
1059         kfd_topology_release_sysfs();
1060         kfd_release_live_view();
1061         up_write(&topology_lock);
1062 }
1063
1064 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu)
1065 {
1066         uint32_t hashout;
1067         uint32_t buf[7];
1068         uint64_t local_mem_size;
1069         int i;
1070         struct kfd_local_mem_info local_mem_info;
1071
1072         if (!gpu)
1073                 return 0;
1074
1075         amdgpu_amdkfd_get_local_mem_info(gpu->kgd, &local_mem_info);
1076
1077         local_mem_size = local_mem_info.local_mem_size_private +
1078                         local_mem_info.local_mem_size_public;
1079
1080         buf[0] = gpu->pdev->devfn;
1081         buf[1] = gpu->pdev->subsystem_vendor;
1082         buf[2] = gpu->pdev->subsystem_device;
1083         buf[3] = gpu->pdev->device;
1084         buf[4] = gpu->pdev->bus->number;
1085         buf[5] = lower_32_bits(local_mem_size);
1086         buf[6] = upper_32_bits(local_mem_size);
1087
1088         for (i = 0, hashout = 0; i < 7; i++)
1089                 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH);
1090
1091         return hashout;
1092 }
1093 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If
1094  *              the GPU device is not already present in the topology device
1095  *              list then return NULL. This means a new topology device has to
1096  *              be created for this GPU.
1097  */
1098 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
1099 {
1100         struct kfd_topology_device *dev;
1101         struct kfd_topology_device *out_dev = NULL;
1102
1103         down_write(&topology_lock);
1104         list_for_each_entry(dev, &topology_device_list, list) {
1105                 /* Discrete GPUs need their own topology device list
1106                  * entries. Don't assign them to CPU/APU nodes.
1107                  */
1108                 if (!gpu->device_info->needs_iommu_device &&
1109                     dev->node_props.cpu_cores_count)
1110                         continue;
1111
1112                 if (!dev->gpu && (dev->node_props.simd_count > 0)) {
1113                         dev->gpu = gpu;
1114                         out_dev = dev;
1115                         break;
1116                 }
1117         }
1118         up_write(&topology_lock);
1119         return out_dev;
1120 }
1121
1122 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival)
1123 {
1124         /*
1125          * TODO: Generate an event for thunk about the arrival/removal
1126          * of the GPU
1127          */
1128 }
1129
1130 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info,
1131  *              patch this after CRAT parsing.
1132  */
1133 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev)
1134 {
1135         struct kfd_mem_properties *mem;
1136         struct kfd_local_mem_info local_mem_info;
1137
1138         if (!dev)
1139                 return;
1140
1141         /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with
1142          * single bank of VRAM local memory.
1143          * for dGPUs - VCRAT reports only one bank of Local Memory
1144          * for APUs - If CRAT from ACPI reports more than one bank, then
1145          *      all the banks will report the same mem_clk_max information
1146          */
1147         amdgpu_amdkfd_get_local_mem_info(dev->gpu->kgd, &local_mem_info);
1148
1149         list_for_each_entry(mem, &dev->mem_props, list)
1150                 mem->mem_clk_max = local_mem_info.mem_clk_max;
1151 }
1152
1153 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
1154 {
1155         struct kfd_iolink_properties *link, *cpu_link;
1156         struct kfd_topology_device *cpu_dev;
1157         uint32_t cap;
1158         uint32_t cpu_flag = CRAT_IOLINK_FLAGS_ENABLED;
1159         uint32_t flag = CRAT_IOLINK_FLAGS_ENABLED;
1160
1161         if (!dev || !dev->gpu)
1162                 return;
1163
1164         pcie_capability_read_dword(dev->gpu->pdev,
1165                         PCI_EXP_DEVCAP2, &cap);
1166
1167         if (!(cap & (PCI_EXP_DEVCAP2_ATOMIC_COMP32 |
1168                      PCI_EXP_DEVCAP2_ATOMIC_COMP64)))
1169                 cpu_flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1170                         CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1171
1172         if (!dev->gpu->pci_atomic_requested ||
1173             dev->gpu->device_info->asic_family == CHIP_HAWAII)
1174                 flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1175                         CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1176
1177         /* GPU only creates direct links so apply flags setting to all */
1178         list_for_each_entry(link, &dev->io_link_props, list) {
1179                 link->flags = flag;
1180                 cpu_dev = kfd_topology_device_by_proximity_domain(
1181                                 link->node_to);
1182                 if (cpu_dev) {
1183                         list_for_each_entry(cpu_link,
1184                                             &cpu_dev->io_link_props, list)
1185                                 if (cpu_link->node_to == link->node_from)
1186                                         cpu_link->flags = cpu_flag;
1187                 }
1188         }
1189 }
1190
1191 int kfd_topology_add_device(struct kfd_dev *gpu)
1192 {
1193         uint32_t gpu_id;
1194         struct kfd_topology_device *dev;
1195         struct kfd_cu_info cu_info;
1196         int res = 0;
1197         struct list_head temp_topology_device_list;
1198         void *crat_image = NULL;
1199         size_t image_size = 0;
1200         int proximity_domain;
1201         struct amdgpu_ras *ctx;
1202
1203         INIT_LIST_HEAD(&temp_topology_device_list);
1204
1205         gpu_id = kfd_generate_gpu_id(gpu);
1206
1207         pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
1208
1209         proximity_domain = atomic_inc_return(&topology_crat_proximity_domain);
1210
1211         /* Check to see if this gpu device exists in the topology_device_list.
1212          * If so, assign the gpu to that device,
1213          * else create a Virtual CRAT for this gpu device and then parse that
1214          * CRAT to create a new topology device. Once created assign the gpu to
1215          * that topology device
1216          */
1217         dev = kfd_assign_gpu(gpu);
1218         if (!dev) {
1219                 res = kfd_create_crat_image_virtual(&crat_image, &image_size,
1220                                                     COMPUTE_UNIT_GPU, gpu,
1221                                                     proximity_domain);
1222                 if (res) {
1223                         pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n",
1224                                gpu_id);
1225                         return res;
1226                 }
1227                 res = kfd_parse_crat_table(crat_image,
1228                                            &temp_topology_device_list,
1229                                            proximity_domain);
1230                 if (res) {
1231                         pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n",
1232                                gpu_id);
1233                         goto err;
1234                 }
1235
1236                 down_write(&topology_lock);
1237                 kfd_topology_update_device_list(&temp_topology_device_list,
1238                         &topology_device_list);
1239
1240                 /* Update the SYSFS tree, since we added another topology
1241                  * device
1242                  */
1243                 res = kfd_topology_update_sysfs();
1244                 up_write(&topology_lock);
1245
1246                 if (!res)
1247                         sys_props.generation_count++;
1248                 else
1249                         pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n",
1250                                                 gpu_id, res);
1251                 dev = kfd_assign_gpu(gpu);
1252                 if (WARN_ON(!dev)) {
1253                         res = -ENODEV;
1254                         goto err;
1255                 }
1256         }
1257
1258         dev->gpu_id = gpu_id;
1259         gpu->id = gpu_id;
1260
1261         /* TODO: Move the following lines to function
1262          *      kfd_add_non_crat_information
1263          */
1264
1265         /* Fill-in additional information that is not available in CRAT but
1266          * needed for the topology
1267          */
1268
1269         amdgpu_amdkfd_get_cu_info(dev->gpu->kgd, &cu_info);
1270         dev->node_props.simd_arrays_per_engine =
1271                 cu_info.num_shader_arrays_per_engine;
1272
1273         dev->node_props.vendor_id = gpu->pdev->vendor;
1274         dev->node_props.device_id = gpu->pdev->device;
1275         dev->node_props.location_id = pci_dev_id(gpu->pdev);
1276         dev->node_props.max_engine_clk_fcompute =
1277                 amdgpu_amdkfd_get_max_engine_clock_in_mhz(dev->gpu->kgd);
1278         dev->node_props.max_engine_clk_ccompute =
1279                 cpufreq_quick_get_max(0) / 1000;
1280         dev->node_props.drm_render_minor =
1281                 gpu->shared_resources.drm_render_minor;
1282
1283         dev->node_props.hive_id = gpu->hive_id;
1284
1285         kfd_fill_mem_clk_max_info(dev);
1286         kfd_fill_iolink_non_crat_info(dev);
1287
1288         switch (dev->gpu->device_info->asic_family) {
1289         case CHIP_KAVERI:
1290         case CHIP_HAWAII:
1291         case CHIP_TONGA:
1292                 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 <<
1293                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1294                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1295                 break;
1296         case CHIP_CARRIZO:
1297         case CHIP_FIJI:
1298         case CHIP_POLARIS10:
1299         case CHIP_POLARIS11:
1300         case CHIP_POLARIS12:
1301                 pr_debug("Adding doorbell packet type capability\n");
1302                 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 <<
1303                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1304                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1305                 break;
1306         case CHIP_VEGA10:
1307         case CHIP_VEGA12:
1308         case CHIP_VEGA20:
1309         case CHIP_RAVEN:
1310                 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 <<
1311                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1312                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1313                 break;
1314         default:
1315                 WARN(1, "Unexpected ASIC family %u",
1316                      dev->gpu->device_info->asic_family);
1317         }
1318
1319         /* Fix errors in CZ CRAT.
1320          * simd_count: Carrizo CRAT reports wrong simd_count, probably
1321          *              because it doesn't consider masked out CUs
1322          * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd
1323          * capability flag: Carrizo CRAT doesn't report IOMMU flags
1324          */
1325         if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) {
1326                 dev->node_props.simd_count =
1327                         cu_info.simd_per_cu * cu_info.cu_active_number;
1328                 dev->node_props.max_waves_per_simd = 10;
1329                 dev->node_props.capability |= HSA_CAP_ATS_PRESENT;
1330         }
1331
1332         ctx = amdgpu_ras_get_context((struct amdgpu_device *)(dev->gpu->kgd));
1333         if (ctx) {
1334                 /* kfd only concerns sram ecc on GFX/SDMA and HBM ecc on UMC */
1335                 dev->node_props.capability |=
1336                         (((ctx->features & BIT(AMDGPU_RAS_BLOCK__SDMA)) != 0) ||
1337                          ((ctx->features & BIT(AMDGPU_RAS_BLOCK__GFX)) != 0)) ?
1338                         HSA_CAP_SRAM_EDCSUPPORTED : 0;
1339                 dev->node_props.capability |= ((ctx->features & BIT(AMDGPU_RAS_BLOCK__UMC)) != 0) ?
1340                         HSA_CAP_MEM_EDCSUPPORTED : 0;
1341
1342                 dev->node_props.capability |= (ctx->features != 0) ?
1343                         HSA_CAP_RASEVENTNOTIFY : 0;
1344         }
1345
1346         kfd_debug_print_topology();
1347
1348         if (!res)
1349                 kfd_notify_gpu_change(gpu_id, 1);
1350 err:
1351         kfd_destroy_crat_image(crat_image);
1352         return res;
1353 }
1354
1355 int kfd_topology_remove_device(struct kfd_dev *gpu)
1356 {
1357         struct kfd_topology_device *dev, *tmp;
1358         uint32_t gpu_id;
1359         int res = -ENODEV;
1360
1361         down_write(&topology_lock);
1362
1363         list_for_each_entry_safe(dev, tmp, &topology_device_list, list)
1364                 if (dev->gpu == gpu) {
1365                         gpu_id = dev->gpu_id;
1366                         kfd_remove_sysfs_node_entry(dev);
1367                         kfd_release_topology_device(dev);
1368                         sys_props.num_devices--;
1369                         res = 0;
1370                         if (kfd_topology_update_sysfs() < 0)
1371                                 kfd_topology_release_sysfs();
1372                         break;
1373                 }
1374
1375         up_write(&topology_lock);
1376
1377         if (!res)
1378                 kfd_notify_gpu_change(gpu_id, 0);
1379
1380         return res;
1381 }
1382
1383 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD
1384  *      topology. If GPU device is found @idx, then valid kfd_dev pointer is
1385  *      returned through @kdev
1386  * Return -     0: On success (@kdev will be NULL for non GPU nodes)
1387  *              -1: If end of list
1388  */
1389 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev)
1390 {
1391
1392         struct kfd_topology_device *top_dev;
1393         uint8_t device_idx = 0;
1394
1395         *kdev = NULL;
1396         down_read(&topology_lock);
1397
1398         list_for_each_entry(top_dev, &topology_device_list, list) {
1399                 if (device_idx == idx) {
1400                         *kdev = top_dev->gpu;
1401                         up_read(&topology_lock);
1402                         return 0;
1403                 }
1404
1405                 device_idx++;
1406         }
1407
1408         up_read(&topology_lock);
1409
1410         return -1;
1411
1412 }
1413
1414 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
1415 {
1416         int first_cpu_of_numa_node;
1417
1418         if (!cpumask || cpumask == cpu_none_mask)
1419                 return -1;
1420         first_cpu_of_numa_node = cpumask_first(cpumask);
1421         if (first_cpu_of_numa_node >= nr_cpu_ids)
1422                 return -1;
1423 #ifdef CONFIG_X86_64
1424         return cpu_data(first_cpu_of_numa_node).apicid;
1425 #else
1426         return first_cpu_of_numa_node;
1427 #endif
1428 }
1429
1430 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor
1431  *      of the given NUMA node (numa_node_id)
1432  * Return -1 on failure
1433  */
1434 int kfd_numa_node_to_apic_id(int numa_node_id)
1435 {
1436         if (numa_node_id == -1) {
1437                 pr_warn("Invalid NUMA Node. Use online CPU mask\n");
1438                 return kfd_cpumask_to_apic_id(cpu_online_mask);
1439         }
1440         return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id));
1441 }
1442
1443 #if defined(CONFIG_DEBUG_FS)
1444
1445 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data)
1446 {
1447         struct kfd_topology_device *dev;
1448         unsigned int i = 0;
1449         int r = 0;
1450
1451         down_read(&topology_lock);
1452
1453         list_for_each_entry(dev, &topology_device_list, list) {
1454                 if (!dev->gpu) {
1455                         i++;
1456                         continue;
1457                 }
1458
1459                 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1460                 r = dqm_debugfs_hqds(m, dev->gpu->dqm);
1461                 if (r)
1462                         break;
1463         }
1464
1465         up_read(&topology_lock);
1466
1467         return r;
1468 }
1469
1470 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data)
1471 {
1472         struct kfd_topology_device *dev;
1473         unsigned int i = 0;
1474         int r = 0;
1475
1476         down_read(&topology_lock);
1477
1478         list_for_each_entry(dev, &topology_device_list, list) {
1479                 if (!dev->gpu) {
1480                         i++;
1481                         continue;
1482                 }
1483
1484                 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1485                 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets);
1486                 if (r)
1487                         break;
1488         }
1489
1490         up_read(&topology_lock);
1491
1492         return r;
1493 }
1494
1495 #endif