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