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_topology_device *kfd_topology_device_by_id(uint32_t gpu_id)
  67 {
  68         struct kfd_topology_device *top_dev = NULL;
  69         struct kfd_topology_device *ret = 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                         ret = top_dev;
  76                         break;
  77                 }
  78
  79         up_read(&topology_lock);
  80
  81         return ret;
  82 }
  83
  84 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id)
  85 {
  86         struct kfd_topology_device *top_dev;
  87
  88         top_dev = kfd_topology_device_by_id(gpu_id);
  89         if (!top_dev)
  90                 return NULL;
  91
  92         return top_dev->gpu;
  93 }
  94
  95 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
  96 {
  97         struct kfd_topology_device *top_dev;
  98         struct kfd_dev *device = NULL;
  99
 100         down_read(&topology_lock);
 101
 102         list_for_each_entry(top_dev, &topology_device_list, list)
 103                 if (top_dev->gpu->pdev == pdev) {
 104                         device = top_dev->gpu;
 105                         break;
 106                 }
 107
 108         up_read(&topology_lock);
 109
 110         return device;
 111 }
 112
 113 /* Called with write topology_lock acquired */
 114 static void kfd_release_topology_device(struct kfd_topology_device *dev)
 115 {
 116         struct kfd_mem_properties *mem;
 117         struct kfd_cache_properties *cache;
 118         struct kfd_iolink_properties *iolink;
 119         struct kfd_perf_properties *perf;
 120
 121         list_del(&dev->list);
 122
 123         while (dev->mem_props.next != &dev->mem_props) {
 124                 mem = container_of(dev->mem_props.next,
 125                                 struct kfd_mem_properties, list);
 126                 list_del(&mem->list);
 127                 kfree(mem);
 128         }
 129
 130         while (dev->cache_props.next != &dev->cache_props) {
 131                 cache = container_of(dev->cache_props.next,
 132                                 struct kfd_cache_properties, list);
 133                 list_del(&cache->list);
 134                 kfree(cache);
 135         }
 136
 137         while (dev->io_link_props.next != &dev->io_link_props) {
 138                 iolink = container_of(dev->io_link_props.next,
 139                                 struct kfd_iolink_properties, list);
 140                 list_del(&iolink->list);
 141                 kfree(iolink);
 142         }
 143
 144         while (dev->perf_props.next != &dev->perf_props) {
 145                 perf = container_of(dev->perf_props.next,
 146                                 struct kfd_perf_properties, list);
 147                 list_del(&perf->list);
 148                 kfree(perf);
 149         }
 150
 151         kfree(dev);
 152 }
 153
 154 void kfd_release_topology_device_list(struct list_head *device_list)
 155 {
 156         struct kfd_topology_device *dev;
 157
 158         while (!list_empty(device_list)) {
 159                 dev = list_first_entry(device_list,
 160                                        struct kfd_topology_device, list);
 161                 kfd_release_topology_device(dev);
 162         }
 163 }
 164
 165 static void kfd_release_live_view(void)
 166 {
 167         kfd_release_topology_device_list(&topology_device_list);
 168         memset(&sys_props, 0, sizeof(sys_props));
 169 }
 170
 171 struct kfd_topology_device *kfd_create_topology_device(
 172                                 struct list_head *device_list)
 173 {
 174         struct kfd_topology_device *dev;
 175
 176         dev = kfd_alloc_struct(dev);
 177         if (!dev) {
 178                 pr_err("No memory to allocate a topology device");
 179                 return NULL;
 180         }
 181
 182         INIT_LIST_HEAD(&dev->mem_props);
 183         INIT_LIST_HEAD(&dev->cache_props);
 184         INIT_LIST_HEAD(&dev->io_link_props);
 185         INIT_LIST_HEAD(&dev->perf_props);
 186
 187         list_add_tail(&dev->list, device_list);
 188
 189         return dev;
 190 }
 191
 192
 193 #define sysfs_show_gen_prop(buffer, fmt, ...) \
 194                 snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__)
 195 #define sysfs_show_32bit_prop(buffer, name, value) \
 196                 sysfs_show_gen_prop(buffer, "%s %u\n", name, value)
 197 #define sysfs_show_64bit_prop(buffer, name, value) \
 198                 sysfs_show_gen_prop(buffer, "%s %llu\n", name, value)
 199 #define sysfs_show_32bit_val(buffer, value) \
 200                 sysfs_show_gen_prop(buffer, "%u\n", value)
 201 #define sysfs_show_str_val(buffer, value) \
 202                 sysfs_show_gen_prop(buffer, "%s\n", value)
 203
 204 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
 205                 char *buffer)
 206 {
 207         ssize_t ret;
 208
 209         /* Making sure that the buffer is an empty string */
 210         buffer[0] = 0;
 211
 212         if (attr == &sys_props.attr_genid) {
 213                 ret = sysfs_show_32bit_val(buffer, sys_props.generation_count);
 214         } else if (attr == &sys_props.attr_props) {
 215                 sysfs_show_64bit_prop(buffer, "platform_oem",
 216                                 sys_props.platform_oem);
 217                 sysfs_show_64bit_prop(buffer, "platform_id",
 218                                 sys_props.platform_id);
 219                 ret = sysfs_show_64bit_prop(buffer, "platform_rev",
 220                                 sys_props.platform_rev);
 221         } else {
 222                 ret = -EINVAL;
 223         }
 224
 225         return ret;
 226 }
 227
 228 static void kfd_topology_kobj_release(struct kobject *kobj)
 229 {
 230         kfree(kobj);
 231 }
 232
 233 static const struct sysfs_ops sysprops_ops = {
 234         .show = sysprops_show,
 235 };
 236
 237 static struct kobj_type sysprops_type = {
 238         .release = kfd_topology_kobj_release,
 239         .sysfs_ops = &sysprops_ops,
 240 };
 241
 242 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr,
 243                 char *buffer)
 244 {
 245         ssize_t ret;
 246         struct kfd_iolink_properties *iolink;
 247
 248         /* Making sure that the buffer is an empty string */
 249         buffer[0] = 0;
 250
 251         iolink = container_of(attr, struct kfd_iolink_properties, attr);
 252         sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type);
 253         sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj);
 254         sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min);
 255         sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from);
 256         sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to);
 257         sysfs_show_32bit_prop(buffer, "weight", iolink->weight);
 258         sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency);
 259         sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency);
 260         sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth);
 261         sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth);
 262         sysfs_show_32bit_prop(buffer, "recommended_transfer_size",
 263                         iolink->rec_transfer_size);
 264         ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags);
 265
 266         return ret;
 267 }
 268
 269 static const struct sysfs_ops iolink_ops = {
 270         .show = iolink_show,
 271 };
 272
 273 static struct kobj_type iolink_type = {
 274         .release = kfd_topology_kobj_release,
 275         .sysfs_ops = &iolink_ops,
 276 };
 277
 278 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr,
 279                 char *buffer)
 280 {
 281         ssize_t ret;
 282         struct kfd_mem_properties *mem;
 283
 284         /* Making sure that the buffer is an empty string */
 285         buffer[0] = 0;
 286
 287         mem = container_of(attr, struct kfd_mem_properties, attr);
 288         sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type);
 289         sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes);
 290         sysfs_show_32bit_prop(buffer, "flags", mem->flags);
 291         sysfs_show_32bit_prop(buffer, "width", mem->width);
 292         ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max);
 293
 294         return ret;
 295 }
 296
 297 static const struct sysfs_ops mem_ops = {
 298         .show = mem_show,
 299 };
 300
 301 static struct kobj_type mem_type = {
 302         .release = kfd_topology_kobj_release,
 303         .sysfs_ops = &mem_ops,
 304 };
 305
 306 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr,
 307                 char *buffer)
 308 {
 309         ssize_t ret;
 310         uint32_t i, j;
 311         struct kfd_cache_properties *cache;
 312
 313         /* Making sure that the buffer is an empty string */
 314         buffer[0] = 0;
 315
 316         cache = container_of(attr, struct kfd_cache_properties, attr);
 317         sysfs_show_32bit_prop(buffer, "processor_id_low",
 318                         cache->processor_id_low);
 319         sysfs_show_32bit_prop(buffer, "level", cache->cache_level);
 320         sysfs_show_32bit_prop(buffer, "size", cache->cache_size);
 321         sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size);
 322         sysfs_show_32bit_prop(buffer, "cache_lines_per_tag",
 323                         cache->cachelines_per_tag);
 324         sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc);
 325         sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency);
 326         sysfs_show_32bit_prop(buffer, "type", cache->cache_type);
 327         snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer);
 328         for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++)
 329                 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) {
 330                         /* Check each bit */
 331                         if (cache->sibling_map[i] & (1 << j))
 332                                 ret = snprintf(buffer, PAGE_SIZE,
 333                                          "%s%d%s", buffer, 1, ",");
 334                         else
 335                                 ret = snprintf(buffer, PAGE_SIZE,
 336                                          "%s%d%s", buffer, 0, ",");
 337                 }
 338         /* Replace the last "," with end of line */
 339         *(buffer + strlen(buffer) - 1) = 0xA;
 340         return ret;
 341 }
 342
 343 static const struct sysfs_ops cache_ops = {
 344         .show = kfd_cache_show,
 345 };
 346
 347 static struct kobj_type cache_type = {
 348         .release = kfd_topology_kobj_release,
 349         .sysfs_ops = &cache_ops,
 350 };
 351
 352 /****** Sysfs of Performance Counters ******/
 353
 354 struct kfd_perf_attr {
 355         struct kobj_attribute attr;
 356         uint32_t data;
 357 };
 358
 359 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs,
 360                         char *buf)
 361 {
 362         struct kfd_perf_attr *attr;
 363
 364         buf[0] = 0;
 365         attr = container_of(attrs, struct kfd_perf_attr, attr);
 366         if (!attr->data) /* invalid data for PMC */
 367                 return 0;
 368         else
 369                 return sysfs_show_32bit_val(buf, attr->data);
 370 }
 371
 372 #define KFD_PERF_DESC(_name, _data)                     \
 373 {                                                       \
 374         .attr  = __ATTR(_name, 0444, perf_show, NULL),  \
 375         .data = _data,                                  \
 376 }
 377
 378 static struct kfd_perf_attr perf_attr_iommu[] = {
 379         KFD_PERF_DESC(max_concurrent, 0),
 380         KFD_PERF_DESC(num_counters, 0),
 381         KFD_PERF_DESC(counter_ids, 0),
 382 };
 383 /****************************************/
 384
 385 static ssize_t node_show(struct kobject *kobj, struct attribute *attr,
 386                 char *buffer)
 387 {
 388         struct kfd_topology_device *dev;
 389         char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE];
 390         uint32_t i;
 391         uint32_t log_max_watch_addr;
 392
 393         /* Making sure that the buffer is an empty string */
 394         buffer[0] = 0;
 395
 396         if (strcmp(attr->name, "gpu_id") == 0) {
 397                 dev = container_of(attr, struct kfd_topology_device,
 398                                 attr_gpuid);
 399                 return sysfs_show_32bit_val(buffer, dev->gpu_id);
 400         }
 401
 402         if (strcmp(attr->name, "name") == 0) {
 403                 dev = container_of(attr, struct kfd_topology_device,
 404                                 attr_name);
 405                 for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) {
 406                         public_name[i] =
 407                                         (char)dev->node_props.marketing_name[i];
 408                         if (dev->node_props.marketing_name[i] == 0)
 409                                 break;
 410                 }
 411                 public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0;
 412                 return sysfs_show_str_val(buffer, public_name);
 413         }
 414
 415         dev = container_of(attr, struct kfd_topology_device,
 416                         attr_props);
 417         sysfs_show_32bit_prop(buffer, "cpu_cores_count",
 418                         dev->node_props.cpu_cores_count);
 419         sysfs_show_32bit_prop(buffer, "simd_count",
 420                         dev->node_props.simd_count);
 421         sysfs_show_32bit_prop(buffer, "mem_banks_count",
 422                         dev->node_props.mem_banks_count);
 423         sysfs_show_32bit_prop(buffer, "caches_count",
 424                         dev->node_props.caches_count);
 425         sysfs_show_32bit_prop(buffer, "io_links_count",
 426                         dev->node_props.io_links_count);
 427         sysfs_show_32bit_prop(buffer, "cpu_core_id_base",
 428                         dev->node_props.cpu_core_id_base);
 429         sysfs_show_32bit_prop(buffer, "simd_id_base",
 430                         dev->node_props.simd_id_base);
 431         sysfs_show_32bit_prop(buffer, "max_waves_per_simd",
 432                         dev->node_props.max_waves_per_simd);
 433         sysfs_show_32bit_prop(buffer, "lds_size_in_kb",
 434                         dev->node_props.lds_size_in_kb);
 435         sysfs_show_32bit_prop(buffer, "gds_size_in_kb",
 436                         dev->node_props.gds_size_in_kb);
 437         sysfs_show_32bit_prop(buffer, "wave_front_size",
 438                         dev->node_props.wave_front_size);
 439         sysfs_show_32bit_prop(buffer, "array_count",
 440                         dev->node_props.array_count);
 441         sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine",
 442                         dev->node_props.simd_arrays_per_engine);
 443         sysfs_show_32bit_prop(buffer, "cu_per_simd_array",
 444                         dev->node_props.cu_per_simd_array);
 445         sysfs_show_32bit_prop(buffer, "simd_per_cu",
 446                         dev->node_props.simd_per_cu);
 447         sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu",
 448                         dev->node_props.max_slots_scratch_cu);
 449         sysfs_show_32bit_prop(buffer, "vendor_id",
 450                         dev->node_props.vendor_id);
 451         sysfs_show_32bit_prop(buffer, "device_id",
 452                         dev->node_props.device_id);
 453         sysfs_show_32bit_prop(buffer, "location_id",
 454                         dev->node_props.location_id);
 455         sysfs_show_32bit_prop(buffer, "drm_render_minor",
 456                         dev->node_props.drm_render_minor);
 457
 458         if (dev->gpu) {
 459                 log_max_watch_addr =
 460                         __ilog2_u32(dev->gpu->device_info->num_of_watch_points);
 461
 462                 if (log_max_watch_addr) {
 463                         dev->node_props.capability |=
 464                                         HSA_CAP_WATCH_POINTS_SUPPORTED;
 465
 466                         dev->node_props.capability |=
 467                                 ((log_max_watch_addr <<
 468                                         HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) &
 469                                 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK);
 470                 }
 471
 472                 if (dev->gpu->device_info->asic_family == CHIP_TONGA)
 473                         dev->node_props.capability |=
 474                                         HSA_CAP_AQL_QUEUE_DOUBLE_MAP;
 475
 476                 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute",
 477                         dev->node_props.max_engine_clk_fcompute);
 478
 479                 sysfs_show_64bit_prop(buffer, "local_mem_size",
 480                                 (unsigned long long int) 0);
 481
 482                 sysfs_show_32bit_prop(buffer, "fw_version",
 483                         dev->gpu->kfd2kgd->get_fw_version(
 484                                                 dev->gpu->kgd,
 485                                                 KGD_ENGINE_MEC1));
 486                 sysfs_show_32bit_prop(buffer, "capability",
 487                                 dev->node_props.capability);
 488         }
 489
 490         return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute",
 491                                         cpufreq_quick_get_max(0)/1000);
 492 }
 493
 494 static const struct sysfs_ops node_ops = {
 495         .show = node_show,
 496 };
 497
 498 static struct kobj_type node_type = {
 499         .release = kfd_topology_kobj_release,
 500         .sysfs_ops = &node_ops,
 501 };
 502
 503 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr)
 504 {
 505         sysfs_remove_file(kobj, attr);
 506         kobject_del(kobj);
 507         kobject_put(kobj);
 508 }
 509
 510 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
 511 {
 512         struct kfd_iolink_properties *iolink;
 513         struct kfd_cache_properties *cache;
 514         struct kfd_mem_properties *mem;
 515         struct kfd_perf_properties *perf;
 516
 517         if (dev->kobj_iolink) {
 518                 list_for_each_entry(iolink, &dev->io_link_props, list)
 519                         if (iolink->kobj) {
 520                                 kfd_remove_sysfs_file(iolink->kobj,
 521                                                         &iolink->attr);
 522                                 iolink->kobj = NULL;
 523                         }
 524                 kobject_del(dev->kobj_iolink);
 525                 kobject_put(dev->kobj_iolink);
 526                 dev->kobj_iolink = NULL;
 527         }
 528
 529         if (dev->kobj_cache) {
 530                 list_for_each_entry(cache, &dev->cache_props, list)
 531                         if (cache->kobj) {
 532                                 kfd_remove_sysfs_file(cache->kobj,
 533                                                         &cache->attr);
 534                                 cache->kobj = NULL;
 535                         }
 536                 kobject_del(dev->kobj_cache);
 537                 kobject_put(dev->kobj_cache);
 538                 dev->kobj_cache = NULL;
 539         }
 540
 541         if (dev->kobj_mem) {
 542                 list_for_each_entry(mem, &dev->mem_props, list)
 543                         if (mem->kobj) {
 544                                 kfd_remove_sysfs_file(mem->kobj, &mem->attr);
 545                                 mem->kobj = NULL;
 546                         }
 547                 kobject_del(dev->kobj_mem);
 548                 kobject_put(dev->kobj_mem);
 549                 dev->kobj_mem = NULL;
 550         }
 551
 552         if (dev->kobj_perf) {
 553                 list_for_each_entry(perf, &dev->perf_props, list) {
 554                         kfree(perf->attr_group);
 555                         perf->attr_group = NULL;
 556                 }
 557                 kobject_del(dev->kobj_perf);
 558                 kobject_put(dev->kobj_perf);
 559                 dev->kobj_perf = NULL;
 560         }
 561
 562         if (dev->kobj_node) {
 563                 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid);
 564                 sysfs_remove_file(dev->kobj_node, &dev->attr_name);
 565                 sysfs_remove_file(dev->kobj_node, &dev->attr_props);
 566                 kobject_del(dev->kobj_node);
 567                 kobject_put(dev->kobj_node);
 568                 dev->kobj_node = NULL;
 569         }
 570 }
 571
 572 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
 573                 uint32_t id)
 574 {
 575         struct kfd_iolink_properties *iolink;
 576         struct kfd_cache_properties *cache;
 577         struct kfd_mem_properties *mem;
 578         struct kfd_perf_properties *perf;
 579         int ret;
 580         uint32_t i, num_attrs;
 581         struct attribute **attrs;
 582
 583         if (WARN_ON(dev->kobj_node))
 584                 return -EEXIST;
 585
 586         /*
 587          * Creating the sysfs folders
 588          */
 589         dev->kobj_node = kfd_alloc_struct(dev->kobj_node);
 590         if (!dev->kobj_node)
 591                 return -ENOMEM;
 592
 593         ret = kobject_init_and_add(dev->kobj_node, &node_type,
 594                         sys_props.kobj_nodes, "%d", id);
 595         if (ret < 0)
 596                 return ret;
 597
 598         dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node);
 599         if (!dev->kobj_mem)
 600                 return -ENOMEM;
 601
 602         dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node);
 603         if (!dev->kobj_cache)
 604                 return -ENOMEM;
 605
 606         dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node);
 607         if (!dev->kobj_iolink)
 608                 return -ENOMEM;
 609
 610         dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node);
 611         if (!dev->kobj_perf)
 612                 return -ENOMEM;
 613
 614         /*
 615          * Creating sysfs files for node properties
 616          */
 617         dev->attr_gpuid.name = "gpu_id";
 618         dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE;
 619         sysfs_attr_init(&dev->attr_gpuid);
 620         dev->attr_name.name = "name";
 621         dev->attr_name.mode = KFD_SYSFS_FILE_MODE;
 622         sysfs_attr_init(&dev->attr_name);
 623         dev->attr_props.name = "properties";
 624         dev->attr_props.mode = KFD_SYSFS_FILE_MODE;
 625         sysfs_attr_init(&dev->attr_props);
 626         ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid);
 627         if (ret < 0)
 628                 return ret;
 629         ret = sysfs_create_file(dev->kobj_node, &dev->attr_name);
 630         if (ret < 0)
 631                 return ret;
 632         ret = sysfs_create_file(dev->kobj_node, &dev->attr_props);
 633         if (ret < 0)
 634                 return ret;
 635
 636         i = 0;
 637         list_for_each_entry(mem, &dev->mem_props, list) {
 638                 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 639                 if (!mem->kobj)
 640                         return -ENOMEM;
 641                 ret = kobject_init_and_add(mem->kobj, &mem_type,
 642                                 dev->kobj_mem, "%d", i);
 643                 if (ret < 0)
 644                         return ret;
 645
 646                 mem->attr.name = "properties";
 647                 mem->attr.mode = KFD_SYSFS_FILE_MODE;
 648                 sysfs_attr_init(&mem->attr);
 649                 ret = sysfs_create_file(mem->kobj, &mem->attr);
 650                 if (ret < 0)
 651                         return ret;
 652                 i++;
 653         }
 654
 655         i = 0;
 656         list_for_each_entry(cache, &dev->cache_props, list) {
 657                 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 658                 if (!cache->kobj)
 659                         return -ENOMEM;
 660                 ret = kobject_init_and_add(cache->kobj, &cache_type,
 661                                 dev->kobj_cache, "%d", i);
 662                 if (ret < 0)
 663                         return ret;
 664
 665                 cache->attr.name = "properties";
 666                 cache->attr.mode = KFD_SYSFS_FILE_MODE;
 667                 sysfs_attr_init(&cache->attr);
 668                 ret = sysfs_create_file(cache->kobj, &cache->attr);
 669                 if (ret < 0)
 670                         return ret;
 671                 i++;
 672         }
 673
 674         i = 0;
 675         list_for_each_entry(iolink, &dev->io_link_props, list) {
 676                 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 677                 if (!iolink->kobj)
 678                         return -ENOMEM;
 679                 ret = kobject_init_and_add(iolink->kobj, &iolink_type,
 680                                 dev->kobj_iolink, "%d", i);
 681                 if (ret < 0)
 682                         return ret;
 683
 684                 iolink->attr.name = "properties";
 685                 iolink->attr.mode = KFD_SYSFS_FILE_MODE;
 686                 sysfs_attr_init(&iolink->attr);
 687                 ret = sysfs_create_file(iolink->kobj, &iolink->attr);
 688                 if (ret < 0)
 689                         return ret;
 690                 i++;
 691         }
 692
 693         /* All hardware blocks have the same number of attributes. */
 694         num_attrs = ARRAY_SIZE(perf_attr_iommu);
 695         list_for_each_entry(perf, &dev->perf_props, list) {
 696                 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr)
 697                         * num_attrs + sizeof(struct attribute_group),
 698                         GFP_KERNEL);
 699                 if (!perf->attr_group)
 700                         return -ENOMEM;
 701
 702                 attrs = (struct attribute **)(perf->attr_group + 1);
 703                 if (!strcmp(perf->block_name, "iommu")) {
 704                 /* Information of IOMMU's num_counters and counter_ids is shown
 705                  * under /sys/bus/event_source/devices/amd_iommu. We don't
 706                  * duplicate here.
 707                  */
 708                         perf_attr_iommu[0].data = perf->max_concurrent;
 709                         for (i = 0; i < num_attrs; i++)
 710                                 attrs[i] = &perf_attr_iommu[i].attr.attr;
 711                 }
 712                 perf->attr_group->name = perf->block_name;
 713                 perf->attr_group->attrs = attrs;
 714                 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group);
 715                 if (ret < 0)
 716                         return ret;
 717         }
 718
 719         return 0;
 720 }
 721
 722 /* Called with write topology lock acquired */
 723 static int kfd_build_sysfs_node_tree(void)
 724 {
 725         struct kfd_topology_device *dev;
 726         int ret;
 727         uint32_t i = 0;
 728
 729         list_for_each_entry(dev, &topology_device_list, list) {
 730                 ret = kfd_build_sysfs_node_entry(dev, i);
 731                 if (ret < 0)
 732                         return ret;
 733                 i++;
 734         }
 735
 736         return 0;
 737 }
 738
 739 /* Called with write topology lock acquired */
 740 static void kfd_remove_sysfs_node_tree(void)
 741 {
 742         struct kfd_topology_device *dev;
 743
 744         list_for_each_entry(dev, &topology_device_list, list)
 745                 kfd_remove_sysfs_node_entry(dev);
 746 }
 747
 748 static int kfd_topology_update_sysfs(void)
 749 {
 750         int ret;
 751
 752         pr_info("Creating topology SYSFS entries\n");
 753         if (!sys_props.kobj_topology) {
 754                 sys_props.kobj_topology =
 755                                 kfd_alloc_struct(sys_props.kobj_topology);
 756                 if (!sys_props.kobj_topology)
 757                         return -ENOMEM;
 758
 759                 ret = kobject_init_and_add(sys_props.kobj_topology,
 760                                 &sysprops_type,  &kfd_device->kobj,
 761                                 "topology");
 762                 if (ret < 0)
 763                         return ret;
 764
 765                 sys_props.kobj_nodes = kobject_create_and_add("nodes",
 766                                 sys_props.kobj_topology);
 767                 if (!sys_props.kobj_nodes)
 768                         return -ENOMEM;
 769
 770                 sys_props.attr_genid.name = "generation_id";
 771                 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE;
 772                 sysfs_attr_init(&sys_props.attr_genid);
 773                 ret = sysfs_create_file(sys_props.kobj_topology,
 774                                 &sys_props.attr_genid);
 775                 if (ret < 0)
 776                         return ret;
 777
 778                 sys_props.attr_props.name = "system_properties";
 779                 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE;
 780                 sysfs_attr_init(&sys_props.attr_props);
 781                 ret = sysfs_create_file(sys_props.kobj_topology,
 782                                 &sys_props.attr_props);
 783                 if (ret < 0)
 784                         return ret;
 785         }
 786
 787         kfd_remove_sysfs_node_tree();
 788
 789         return kfd_build_sysfs_node_tree();
 790 }
 791
 792 static void kfd_topology_release_sysfs(void)
 793 {
 794         kfd_remove_sysfs_node_tree();
 795         if (sys_props.kobj_topology) {
 796                 sysfs_remove_file(sys_props.kobj_topology,
 797                                 &sys_props.attr_genid);
 798                 sysfs_remove_file(sys_props.kobj_topology,
 799                                 &sys_props.attr_props);
 800                 if (sys_props.kobj_nodes) {
 801                         kobject_del(sys_props.kobj_nodes);
 802                         kobject_put(sys_props.kobj_nodes);
 803                         sys_props.kobj_nodes = NULL;
 804                 }
 805                 kobject_del(sys_props.kobj_topology);
 806                 kobject_put(sys_props.kobj_topology);
 807                 sys_props.kobj_topology = NULL;
 808         }
 809 }
 810
 811 /* Called with write topology_lock acquired */
 812 static void kfd_topology_update_device_list(struct list_head *temp_list,
 813                                         struct list_head *master_list)
 814 {
 815         while (!list_empty(temp_list)) {
 816                 list_move_tail(temp_list->next, master_list);
 817                 sys_props.num_devices++;
 818         }
 819 }
 820
 821 static void kfd_debug_print_topology(void)
 822 {
 823         struct kfd_topology_device *dev;
 824
 825         down_read(&topology_lock);
 826
 827         dev = list_last_entry(&topology_device_list,
 828                         struct kfd_topology_device, list);
 829         if (dev) {
 830                 if (dev->node_props.cpu_cores_count &&
 831                                 dev->node_props.simd_count) {
 832                         pr_info("Topology: Add APU node [0x%0x:0x%0x]\n",
 833                                 dev->node_props.device_id,
 834                                 dev->node_props.vendor_id);
 835                 } else if (dev->node_props.cpu_cores_count)
 836                         pr_info("Topology: Add CPU node\n");
 837                 else if (dev->node_props.simd_count)
 838                         pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n",
 839                                 dev->node_props.device_id,
 840                                 dev->node_props.vendor_id);
 841         }
 842         up_read(&topology_lock);
 843 }
 844
 845 /* Helper function for intializing platform_xx members of
 846  * kfd_system_properties. Uses OEM info from the last CPU/APU node.
 847  */
 848 static void kfd_update_system_properties(void)
 849 {
 850         struct kfd_topology_device *dev;
 851
 852         down_read(&topology_lock);
 853         dev = list_last_entry(&topology_device_list,
 854                         struct kfd_topology_device, list);
 855         if (dev) {
 856                 sys_props.platform_id =
 857                         (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK;
 858                 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id);
 859                 sys_props.platform_rev = dev->oem_revision;
 860         }
 861         up_read(&topology_lock);
 862 }
 863
 864 static void find_system_memory(const struct dmi_header *dm,
 865         void *private)
 866 {
 867         struct kfd_mem_properties *mem;
 868         u16 mem_width, mem_clock;
 869         struct kfd_topology_device *kdev =
 870                 (struct kfd_topology_device *)private;
 871         const u8 *dmi_data = (const u8 *)(dm + 1);
 872
 873         if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) {
 874                 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6));
 875                 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11));
 876                 list_for_each_entry(mem, &kdev->mem_props, list) {
 877                         if (mem_width != 0xFFFF && mem_width != 0)
 878                                 mem->width = mem_width;
 879                         if (mem_clock != 0)
 880                                 mem->mem_clk_max = mem_clock;
 881                 }
 882         }
 883 }
 884
 885 /*
 886  * Performance counters information is not part of CRAT but we would like to
 887  * put them in the sysfs under topology directory for Thunk to get the data.
 888  * This function is called before updating the sysfs.
 889  */
 890 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev)
 891 {
 892         /* These are the only counters supported so far */
 893         return kfd_iommu_add_perf_counters(kdev);
 894 }
 895
 896 /* kfd_add_non_crat_information - Add information that is not currently
 897  *      defined in CRAT but is necessary for KFD topology
 898  * @dev - topology device to which addition info is added
 899  */
 900 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev)
 901 {
 902         /* Check if CPU only node. */
 903         if (!kdev->gpu) {
 904                 /* Add system memory information */
 905                 dmi_walk(find_system_memory, kdev);
 906         }
 907         /* TODO: For GPU node, rearrange code from kfd_topology_add_device */
 908 }
 909
 910 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices.
 911  *      Ignore CRAT for all other devices. AMD APU is identified if both CPU
 912  *      and GPU cores are present.
 913  * @device_list - topology device list created by parsing ACPI CRAT table.
 914  * @return - TRUE if invalid, FALSE is valid.
 915  */
 916 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list)
 917 {
 918         struct kfd_topology_device *dev;
 919
 920         list_for_each_entry(dev, device_list, list) {
 921                 if (dev->node_props.cpu_cores_count &&
 922                         dev->node_props.simd_count)
 923                         return false;
 924         }
 925         pr_info("Ignoring ACPI CRAT on non-APU system\n");
 926         return true;
 927 }
 928
 929 int kfd_topology_init(void)
 930 {
 931         void *crat_image = NULL;
 932         size_t image_size = 0;
 933         int ret;
 934         struct list_head temp_topology_device_list;
 935         int cpu_only_node = 0;
 936         struct kfd_topology_device *kdev;
 937         int proximity_domain;
 938
 939         /* topology_device_list - Master list of all topology devices
 940          * temp_topology_device_list - temporary list created while parsing CRAT
 941          * or VCRAT. Once parsing is complete the contents of list is moved to
 942          * topology_device_list
 943          */
 944
 945         /* Initialize the head for the both the lists */
 946         INIT_LIST_HEAD(&topology_device_list);
 947         INIT_LIST_HEAD(&temp_topology_device_list);
 948         init_rwsem(&topology_lock);
 949
 950         memset(&sys_props, 0, sizeof(sys_props));
 951
 952         /* Proximity domains in ACPI CRAT tables start counting at
 953          * 0. The same should be true for virtual CRAT tables created
 954          * at this stage. GPUs added later in kfd_topology_add_device
 955          * use a counter.
 956          */
 957         proximity_domain = 0;
 958
 959         /*
 960          * Get the CRAT image from the ACPI. If ACPI doesn't have one
 961          * or if ACPI CRAT is invalid create a virtual CRAT.
 962          * NOTE: The current implementation expects all AMD APUs to have
 963          *      CRAT. If no CRAT is available, it is assumed to be a CPU
 964          */
 965         ret = kfd_create_crat_image_acpi(&crat_image, &image_size);
 966         if (!ret) {
 967                 ret = kfd_parse_crat_table(crat_image,
 968                                            &temp_topology_device_list,
 969                                            proximity_domain);
 970                 if (ret ||
 971                     kfd_is_acpi_crat_invalid(&temp_topology_device_list)) {
 972                         kfd_release_topology_device_list(
 973                                 &temp_topology_device_list);
 974                         kfd_destroy_crat_image(crat_image);
 975                         crat_image = NULL;
 976                 }
 977         }
 978
 979         if (!crat_image) {
 980                 ret = kfd_create_crat_image_virtual(&crat_image, &image_size,
 981                                                     COMPUTE_UNIT_CPU, NULL,
 982                                                     proximity_domain);
 983                 cpu_only_node = 1;
 984                 if (ret) {
 985                         pr_err("Error creating VCRAT table for CPU\n");
 986                         return ret;
 987                 }
 988
 989                 ret = kfd_parse_crat_table(crat_image,
 990                                            &temp_topology_device_list,
 991                                            proximity_domain);
 992                 if (ret) {
 993                         pr_err("Error parsing VCRAT table for CPU\n");
 994                         goto err;
 995                 }
 996         }
 997
 998         kdev = list_first_entry(&temp_topology_device_list,
 999                                 struct kfd_topology_device, list);
1000         kfd_add_perf_to_topology(kdev);
1001
1002         down_write(&topology_lock);
1003         kfd_topology_update_device_list(&temp_topology_device_list,
1004                                         &topology_device_list);
1005         atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1);
1006         ret = kfd_topology_update_sysfs();
1007         up_write(&topology_lock);
1008
1009         if (!ret) {
1010                 sys_props.generation_count++;
1011                 kfd_update_system_properties();
1012                 kfd_debug_print_topology();
1013                 pr_info("Finished initializing topology\n");
1014         } else
1015                 pr_err("Failed to update topology in sysfs ret=%d\n", ret);
1016
1017         /* For nodes with GPU, this information gets added
1018          * when GPU is detected (kfd_topology_add_device).
1019          */
1020         if (cpu_only_node) {
1021                 /* Add additional information to CPU only node created above */
1022                 down_write(&topology_lock);
1023                 kdev = list_first_entry(&topology_device_list,
1024                                 struct kfd_topology_device, list);
1025                 up_write(&topology_lock);
1026                 kfd_add_non_crat_information(kdev);
1027         }
1028
1029 err:
1030         kfd_destroy_crat_image(crat_image);
1031         return ret;
1032 }
1033
1034 void kfd_topology_shutdown(void)
1035 {
1036         down_write(&topology_lock);
1037         kfd_topology_release_sysfs();
1038         kfd_release_live_view();
1039         up_write(&topology_lock);
1040 }
1041
1042 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu)
1043 {
1044         uint32_t hashout;
1045         uint32_t buf[7];
1046         uint64_t local_mem_size;
1047         int i;
1048         struct kfd_local_mem_info local_mem_info;
1049
1050         if (!gpu)
1051                 return 0;
1052
1053         gpu->kfd2kgd->get_local_mem_info(gpu->kgd, &local_mem_info);
1054
1055         local_mem_size = local_mem_info.local_mem_size_private +
1056                         local_mem_info.local_mem_size_public;
1057
1058         buf[0] = gpu->pdev->devfn;
1059         buf[1] = gpu->pdev->subsystem_vendor;
1060         buf[2] = gpu->pdev->subsystem_device;
1061         buf[3] = gpu->pdev->device;
1062         buf[4] = gpu->pdev->bus->number;
1063         buf[5] = lower_32_bits(local_mem_size);
1064         buf[6] = upper_32_bits(local_mem_size);
1065
1066         for (i = 0, hashout = 0; i < 7; i++)
1067                 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH);
1068
1069         return hashout;
1070 }
1071 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If
1072  *              the GPU device is not already present in the topology device
1073  *              list then return NULL. This means a new topology device has to
1074  *              be created for this GPU.
1075  * TODO: Rather than assiging @gpu to first topology device withtout
1076  *              gpu attached, it will better to have more stringent check.
1077  */
1078 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
1079 {
1080         struct kfd_topology_device *dev;
1081         struct kfd_topology_device *out_dev = NULL;
1082
1083         down_write(&topology_lock);
1084         list_for_each_entry(dev, &topology_device_list, list)
1085                 if (!dev->gpu && (dev->node_props.simd_count > 0)) {
1086                         dev->gpu = gpu;
1087                         out_dev = dev;
1088                         break;
1089                 }
1090         up_write(&topology_lock);
1091         return out_dev;
1092 }
1093
1094 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival)
1095 {
1096         /*
1097          * TODO: Generate an event for thunk about the arrival/removal
1098          * of the GPU
1099          */
1100 }
1101
1102 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info,
1103  *              patch this after CRAT parsing.
1104  */
1105 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev)
1106 {
1107         struct kfd_mem_properties *mem;
1108         struct kfd_local_mem_info local_mem_info;
1109
1110         if (!dev)
1111                 return;
1112
1113         /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with
1114          * single bank of VRAM local memory.
1115          * for dGPUs - VCRAT reports only one bank of Local Memory
1116          * for APUs - If CRAT from ACPI reports more than one bank, then
1117          *      all the banks will report the same mem_clk_max information
1118          */
1119         dev->gpu->kfd2kgd->get_local_mem_info(dev->gpu->kgd,
1120                 &local_mem_info);
1121
1122         list_for_each_entry(mem, &dev->mem_props, list)
1123                 mem->mem_clk_max = local_mem_info.mem_clk_max;
1124 }
1125
1126 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
1127 {
1128         struct kfd_iolink_properties *link;
1129
1130         if (!dev || !dev->gpu)
1131                 return;
1132
1133         /* GPU only creates direck links so apply flags setting to all */
1134         if (dev->gpu->device_info->asic_family == CHIP_HAWAII)
1135                 list_for_each_entry(link, &dev->io_link_props, list)
1136                         link->flags = CRAT_IOLINK_FLAGS_ENABLED |
1137                                 CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1138                                 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1139 }
1140
1141 int kfd_topology_add_device(struct kfd_dev *gpu)
1142 {
1143         uint32_t gpu_id;
1144         struct kfd_topology_device *dev;
1145         struct kfd_cu_info cu_info;
1146         int res = 0;
1147         struct list_head temp_topology_device_list;
1148         void *crat_image = NULL;
1149         size_t image_size = 0;
1150         int proximity_domain;
1151
1152         INIT_LIST_HEAD(&temp_topology_device_list);
1153
1154         gpu_id = kfd_generate_gpu_id(gpu);
1155
1156         pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
1157
1158         proximity_domain = atomic_inc_return(&topology_crat_proximity_domain);
1159
1160         /* Check to see if this gpu device exists in the topology_device_list.
1161          * If so, assign the gpu to that device,
1162          * else create a Virtual CRAT for this gpu device and then parse that
1163          * CRAT to create a new topology device. Once created assign the gpu to
1164          * that topology device
1165          */
1166         dev = kfd_assign_gpu(gpu);
1167         if (!dev) {
1168                 res = kfd_create_crat_image_virtual(&crat_image, &image_size,
1169                                                     COMPUTE_UNIT_GPU, gpu,
1170                                                     proximity_domain);
1171                 if (res) {
1172                         pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n",
1173                                gpu_id);
1174                         return res;
1175                 }
1176                 res = kfd_parse_crat_table(crat_image,
1177                                            &temp_topology_device_list,
1178                                            proximity_domain);
1179                 if (res) {
1180                         pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n",
1181                                gpu_id);
1182                         goto err;
1183                 }
1184
1185                 down_write(&topology_lock);
1186                 kfd_topology_update_device_list(&temp_topology_device_list,
1187                         &topology_device_list);
1188
1189                 /* Update the SYSFS tree, since we added another topology
1190                  * device
1191                  */
1192                 res = kfd_topology_update_sysfs();
1193                 up_write(&topology_lock);
1194
1195                 if (!res)
1196                         sys_props.generation_count++;
1197                 else
1198                         pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n",
1199                                                 gpu_id, res);
1200                 dev = kfd_assign_gpu(gpu);
1201                 if (WARN_ON(!dev)) {
1202                         res = -ENODEV;
1203                         goto err;
1204                 }
1205         }
1206
1207         dev->gpu_id = gpu_id;
1208         gpu->id = gpu_id;
1209
1210         /* TODO: Move the following lines to function
1211          *      kfd_add_non_crat_information
1212          */
1213
1214         /* Fill-in additional information that is not available in CRAT but
1215          * needed for the topology
1216          */
1217
1218         dev->gpu->kfd2kgd->get_cu_info(dev->gpu->kgd, &cu_info);
1219         dev->node_props.simd_arrays_per_engine =
1220                 cu_info.num_shader_arrays_per_engine;
1221
1222         dev->node_props.vendor_id = gpu->pdev->vendor;
1223         dev->node_props.device_id = gpu->pdev->device;
1224         dev->node_props.location_id = PCI_DEVID(gpu->pdev->bus->number,
1225                 gpu->pdev->devfn);
1226         dev->node_props.max_engine_clk_fcompute =
1227                 dev->gpu->kfd2kgd->get_max_engine_clock_in_mhz(dev->gpu->kgd);
1228         dev->node_props.max_engine_clk_ccompute =
1229                 cpufreq_quick_get_max(0) / 1000;
1230         dev->node_props.drm_render_minor =
1231                 gpu->shared_resources.drm_render_minor;
1232
1233         kfd_fill_mem_clk_max_info(dev);
1234         kfd_fill_iolink_non_crat_info(dev);
1235
1236         switch (dev->gpu->device_info->asic_family) {
1237         case CHIP_KAVERI:
1238         case CHIP_HAWAII:
1239         case CHIP_TONGA:
1240                 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 <<
1241                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1242                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1243                 break;
1244         case CHIP_CARRIZO:
1245         case CHIP_FIJI:
1246         case CHIP_POLARIS10:
1247         case CHIP_POLARIS11:
1248                 pr_debug("Adding doorbell packet type capability\n");
1249                 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 <<
1250                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1251                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1252                 break;
1253         case CHIP_VEGA10:
1254         case CHIP_RAVEN:
1255                 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 <<
1256                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1257                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1258                 break;
1259         default:
1260                 WARN(1, "Unexpected ASIC family %u",
1261                      dev->gpu->device_info->asic_family);
1262         }
1263
1264         /* Fix errors in CZ CRAT.
1265          * simd_count: Carrizo CRAT reports wrong simd_count, probably
1266          *              because it doesn't consider masked out CUs
1267          * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd
1268          * capability flag: Carrizo CRAT doesn't report IOMMU flags
1269          */
1270         if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) {
1271                 dev->node_props.simd_count =
1272                         cu_info.simd_per_cu * cu_info.cu_active_number;
1273                 dev->node_props.max_waves_per_simd = 10;
1274                 dev->node_props.capability |= HSA_CAP_ATS_PRESENT;
1275         }
1276
1277         kfd_debug_print_topology();
1278
1279         if (!res)
1280                 kfd_notify_gpu_change(gpu_id, 1);
1281 err:
1282         kfd_destroy_crat_image(crat_image);
1283         return res;
1284 }
1285
1286 int kfd_topology_remove_device(struct kfd_dev *gpu)
1287 {
1288         struct kfd_topology_device *dev, *tmp;
1289         uint32_t gpu_id;
1290         int res = -ENODEV;
1291
1292         down_write(&topology_lock);
1293
1294         list_for_each_entry_safe(dev, tmp, &topology_device_list, list)
1295                 if (dev->gpu == gpu) {
1296                         gpu_id = dev->gpu_id;
1297                         kfd_remove_sysfs_node_entry(dev);
1298                         kfd_release_topology_device(dev);
1299                         sys_props.num_devices--;
1300                         res = 0;
1301                         if (kfd_topology_update_sysfs() < 0)
1302                                 kfd_topology_release_sysfs();
1303                         break;
1304                 }
1305
1306         up_write(&topology_lock);
1307
1308         if (!res)
1309                 kfd_notify_gpu_change(gpu_id, 0);
1310
1311         return res;
1312 }
1313
1314 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD
1315  *      topology. If GPU device is found @idx, then valid kfd_dev pointer is
1316  *      returned through @kdev
1317  * Return -     0: On success (@kdev will be NULL for non GPU nodes)
1318  *              -1: If end of list
1319  */
1320 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev)
1321 {
1322
1323         struct kfd_topology_device *top_dev;
1324         uint8_t device_idx = 0;
1325
1326         *kdev = NULL;
1327         down_read(&topology_lock);
1328
1329         list_for_each_entry(top_dev, &topology_device_list, list) {
1330                 if (device_idx == idx) {
1331                         *kdev = top_dev->gpu;
1332                         up_read(&topology_lock);
1333                         return 0;
1334                 }
1335
1336                 device_idx++;
1337         }
1338
1339         up_read(&topology_lock);
1340
1341         return -1;
1342
1343 }
1344
1345 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
1346 {
1347         const struct cpuinfo_x86 *cpuinfo;
1348         int first_cpu_of_numa_node;
1349
1350         if (!cpumask || cpumask == cpu_none_mask)
1351                 return -1;
1352         first_cpu_of_numa_node = cpumask_first(cpumask);
1353         if (first_cpu_of_numa_node >= nr_cpu_ids)
1354                 return -1;
1355         cpuinfo = &cpu_data(first_cpu_of_numa_node);
1356
1357         return cpuinfo->apicid;
1358 }
1359
1360 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor
1361  *      of the given NUMA node (numa_node_id)
1362  * Return -1 on failure
1363  */
1364 int kfd_numa_node_to_apic_id(int numa_node_id)
1365 {
1366         if (numa_node_id == -1) {
1367                 pr_warn("Invalid NUMA Node. Use online CPU mask\n");
1368                 return kfd_cpumask_to_apic_id(cpu_online_mask);
1369         }
1370         return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id));
1371 }
1372
1373 #if defined(CONFIG_DEBUG_FS)
1374
1375 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data)
1376 {
1377         struct kfd_topology_device *dev;
1378         unsigned int i = 0;
1379         int r = 0;
1380
1381         down_read(&topology_lock);
1382
1383         list_for_each_entry(dev, &topology_device_list, list) {
1384                 if (!dev->gpu) {
1385                         i++;
1386                         continue;
1387                 }
1388
1389                 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1390                 r = dqm_debugfs_hqds(m, dev->gpu->dqm);
1391                 if (r)
1392                         break;
1393         }
1394
1395         up_read(&topology_lock);
1396
1397         return r;
1398 }
1399
1400 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data)
1401 {
1402         struct kfd_topology_device *dev;
1403         unsigned int i = 0;
1404         int r = 0;
1405
1406         down_read(&topology_lock);
1407
1408         list_for_each_entry(dev, &topology_device_list, list) {
1409                 if (!dev->gpu) {
1410                         i++;
1411                         continue;
1412                 }
1413
1414                 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1415                 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets);
1416                 if (r)
1417                         break;
1418         }
1419
1420         up_read(&topology_lock);
1421
1422         return r;
1423 }
1424
1425 #endif