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
  39 /* topology_device_list - Master list of all topology devices */
  40 static struct list_head topology_device_list;
  41 static struct kfd_system_properties sys_props;
  42
  43 static DECLARE_RWSEM(topology_lock);
  44 static atomic_t topology_crat_proximity_domain;
  45
  46 struct kfd_topology_device *kfd_topology_device_by_proximity_domain(
  47                                                 uint32_t proximity_domain)
  48 {
  49         struct kfd_topology_device *top_dev;
  50         struct kfd_topology_device *device = NULL;
  51
  52         down_read(&topology_lock);
  53
  54         list_for_each_entry(top_dev, &topology_device_list, list)
  55                 if (top_dev->proximity_domain == proximity_domain) {
  56                         device = top_dev;
  57                         break;
  58                 }
  59
  60         up_read(&topology_lock);
  61
  62         return device;
  63 }
  64
  65 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id)
  66 {
  67         struct kfd_topology_device *top_dev;
  68         struct kfd_dev *device = NULL;
  69
  70         down_read(&topology_lock);
  71
  72         list_for_each_entry(top_dev, &topology_device_list, list)
  73                 if (top_dev->gpu_id == gpu_id) {
  74                         device = top_dev->gpu;
  75                         break;
  76                 }
  77
  78         up_read(&topology_lock);
  79
  80         return device;
  81 }
  82
  83 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
  84 {
  85         struct kfd_topology_device *top_dev;
  86         struct kfd_dev *device = NULL;
  87
  88         down_read(&topology_lock);
  89
  90         list_for_each_entry(top_dev, &topology_device_list, list)
  91                 if (top_dev->gpu->pdev == pdev) {
  92                         device = top_dev->gpu;
  93                         break;
  94                 }
  95
  96         up_read(&topology_lock);
  97
  98         return device;
  99 }
 100
 101 /* Called with write topology_lock acquired */
 102 static void kfd_release_topology_device(struct kfd_topology_device *dev)
 103 {
 104         struct kfd_mem_properties *mem;
 105         struct kfd_cache_properties *cache;
 106         struct kfd_iolink_properties *iolink;
 107         struct kfd_perf_properties *perf;
 108
 109         list_del(&dev->list);
 110
 111         while (dev->mem_props.next != &dev->mem_props) {
 112                 mem = container_of(dev->mem_props.next,
 113                                 struct kfd_mem_properties, list);
 114                 list_del(&mem->list);
 115                 kfree(mem);
 116         }
 117
 118         while (dev->cache_props.next != &dev->cache_props) {
 119                 cache = container_of(dev->cache_props.next,
 120                                 struct kfd_cache_properties, list);
 121                 list_del(&cache->list);
 122                 kfree(cache);
 123         }
 124
 125         while (dev->io_link_props.next != &dev->io_link_props) {
 126                 iolink = container_of(dev->io_link_props.next,
 127                                 struct kfd_iolink_properties, list);
 128                 list_del(&iolink->list);
 129                 kfree(iolink);
 130         }
 131
 132         while (dev->perf_props.next != &dev->perf_props) {
 133                 perf = container_of(dev->perf_props.next,
 134                                 struct kfd_perf_properties, list);
 135                 list_del(&perf->list);
 136                 kfree(perf);
 137         }
 138
 139         kfree(dev);
 140 }
 141
 142 void kfd_release_topology_device_list(struct list_head *device_list)
 143 {
 144         struct kfd_topology_device *dev;
 145
 146         while (!list_empty(device_list)) {
 147                 dev = list_first_entry(device_list,
 148                                        struct kfd_topology_device, list);
 149                 kfd_release_topology_device(dev);
 150         }
 151 }
 152
 153 static void kfd_release_live_view(void)
 154 {
 155         kfd_release_topology_device_list(&topology_device_list);
 156         memset(&sys_props, 0, sizeof(sys_props));
 157 }
 158
 159 struct kfd_topology_device *kfd_create_topology_device(
 160                                 struct list_head *device_list)
 161 {
 162         struct kfd_topology_device *dev;
 163
 164         dev = kfd_alloc_struct(dev);
 165         if (!dev) {
 166                 pr_err("No memory to allocate a topology device");
 167                 return NULL;
 168         }
 169
 170         INIT_LIST_HEAD(&dev->mem_props);
 171         INIT_LIST_HEAD(&dev->cache_props);
 172         INIT_LIST_HEAD(&dev->io_link_props);
 173         INIT_LIST_HEAD(&dev->perf_props);
 174
 175         list_add_tail(&dev->list, device_list);
 176
 177         return dev;
 178 }
 179
 180
 181 #define sysfs_show_gen_prop(buffer, fmt, ...) \
 182                 snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__)
 183 #define sysfs_show_32bit_prop(buffer, name, value) \
 184                 sysfs_show_gen_prop(buffer, "%s %u\n", name, value)
 185 #define sysfs_show_64bit_prop(buffer, name, value) \
 186                 sysfs_show_gen_prop(buffer, "%s %llu\n", name, value)
 187 #define sysfs_show_32bit_val(buffer, value) \
 188                 sysfs_show_gen_prop(buffer, "%u\n", value)
 189 #define sysfs_show_str_val(buffer, value) \
 190                 sysfs_show_gen_prop(buffer, "%s\n", value)
 191
 192 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
 193                 char *buffer)
 194 {
 195         ssize_t ret;
 196
 197         /* Making sure that the buffer is an empty string */
 198         buffer[0] = 0;
 199
 200         if (attr == &sys_props.attr_genid) {
 201                 ret = sysfs_show_32bit_val(buffer, sys_props.generation_count);
 202         } else if (attr == &sys_props.attr_props) {
 203                 sysfs_show_64bit_prop(buffer, "platform_oem",
 204                                 sys_props.platform_oem);
 205                 sysfs_show_64bit_prop(buffer, "platform_id",
 206                                 sys_props.platform_id);
 207                 ret = sysfs_show_64bit_prop(buffer, "platform_rev",
 208                                 sys_props.platform_rev);
 209         } else {
 210                 ret = -EINVAL;
 211         }
 212
 213         return ret;
 214 }
 215
 216 static void kfd_topology_kobj_release(struct kobject *kobj)
 217 {
 218         kfree(kobj);
 219 }
 220
 221 static const struct sysfs_ops sysprops_ops = {
 222         .show = sysprops_show,
 223 };
 224
 225 static struct kobj_type sysprops_type = {
 226         .release = kfd_topology_kobj_release,
 227         .sysfs_ops = &sysprops_ops,
 228 };
 229
 230 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr,
 231                 char *buffer)
 232 {
 233         ssize_t ret;
 234         struct kfd_iolink_properties *iolink;
 235
 236         /* Making sure that the buffer is an empty string */
 237         buffer[0] = 0;
 238
 239         iolink = container_of(attr, struct kfd_iolink_properties, attr);
 240         sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type);
 241         sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj);
 242         sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min);
 243         sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from);
 244         sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to);
 245         sysfs_show_32bit_prop(buffer, "weight", iolink->weight);
 246         sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency);
 247         sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency);
 248         sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth);
 249         sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth);
 250         sysfs_show_32bit_prop(buffer, "recommended_transfer_size",
 251                         iolink->rec_transfer_size);
 252         ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags);
 253
 254         return ret;
 255 }
 256
 257 static const struct sysfs_ops iolink_ops = {
 258         .show = iolink_show,
 259 };
 260
 261 static struct kobj_type iolink_type = {
 262         .release = kfd_topology_kobj_release,
 263         .sysfs_ops = &iolink_ops,
 264 };
 265
 266 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr,
 267                 char *buffer)
 268 {
 269         ssize_t ret;
 270         struct kfd_mem_properties *mem;
 271
 272         /* Making sure that the buffer is an empty string */
 273         buffer[0] = 0;
 274
 275         mem = container_of(attr, struct kfd_mem_properties, attr);
 276         sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type);
 277         sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes);
 278         sysfs_show_32bit_prop(buffer, "flags", mem->flags);
 279         sysfs_show_32bit_prop(buffer, "width", mem->width);
 280         ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max);
 281
 282         return ret;
 283 }
 284
 285 static const struct sysfs_ops mem_ops = {
 286         .show = mem_show,
 287 };
 288
 289 static struct kobj_type mem_type = {
 290         .release = kfd_topology_kobj_release,
 291         .sysfs_ops = &mem_ops,
 292 };
 293
 294 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr,
 295                 char *buffer)
 296 {
 297         ssize_t ret;
 298         uint32_t i, j;
 299         struct kfd_cache_properties *cache;
 300
 301         /* Making sure that the buffer is an empty string */
 302         buffer[0] = 0;
 303
 304         cache = container_of(attr, struct kfd_cache_properties, attr);
 305         sysfs_show_32bit_prop(buffer, "processor_id_low",
 306                         cache->processor_id_low);
 307         sysfs_show_32bit_prop(buffer, "level", cache->cache_level);
 308         sysfs_show_32bit_prop(buffer, "size", cache->cache_size);
 309         sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size);
 310         sysfs_show_32bit_prop(buffer, "cache_lines_per_tag",
 311                         cache->cachelines_per_tag);
 312         sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc);
 313         sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency);
 314         sysfs_show_32bit_prop(buffer, "type", cache->cache_type);
 315         snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer);
 316         for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++)
 317                 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) {
 318                         /* Check each bit */
 319                         if (cache->sibling_map[i] & (1 << j))
 320                                 ret = snprintf(buffer, PAGE_SIZE,
 321                                          "%s%d%s", buffer, 1, ",");
 322                         else
 323                                 ret = snprintf(buffer, PAGE_SIZE,
 324                                          "%s%d%s", buffer, 0, ",");
 325                 }
 326         /* Replace the last "," with end of line */
 327         *(buffer + strlen(buffer) - 1) = 0xA;
 328         return ret;
 329 }
 330
 331 static const struct sysfs_ops cache_ops = {
 332         .show = kfd_cache_show,
 333 };
 334
 335 static struct kobj_type cache_type = {
 336         .release = kfd_topology_kobj_release,
 337         .sysfs_ops = &cache_ops,
 338 };
 339
 340 /****** Sysfs of Performance Counters ******/
 341
 342 struct kfd_perf_attr {
 343         struct kobj_attribute attr;
 344         uint32_t data;
 345 };
 346
 347 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs,
 348                         char *buf)
 349 {
 350         struct kfd_perf_attr *attr;
 351
 352         buf[0] = 0;
 353         attr = container_of(attrs, struct kfd_perf_attr, attr);
 354         if (!attr->data) /* invalid data for PMC */
 355                 return 0;
 356         else
 357                 return sysfs_show_32bit_val(buf, attr->data);
 358 }
 359
 360 #define KFD_PERF_DESC(_name, _data)                     \
 361 {                                                       \
 362         .attr  = __ATTR(_name, 0444, perf_show, NULL),  \
 363         .data = _data,                                  \
 364 }
 365
 366 static struct kfd_perf_attr perf_attr_iommu[] = {
 367         KFD_PERF_DESC(max_concurrent, 0),
 368         KFD_PERF_DESC(num_counters, 0),
 369         KFD_PERF_DESC(counter_ids, 0),
 370 };
 371 /****************************************/
 372
 373 static ssize_t node_show(struct kobject *kobj, struct attribute *attr,
 374                 char *buffer)
 375 {
 376         struct kfd_topology_device *dev;
 377         char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE];
 378         uint32_t i;
 379         uint32_t log_max_watch_addr;
 380
 381         /* Making sure that the buffer is an empty string */
 382         buffer[0] = 0;
 383
 384         if (strcmp(attr->name, "gpu_id") == 0) {
 385                 dev = container_of(attr, struct kfd_topology_device,
 386                                 attr_gpuid);
 387                 return sysfs_show_32bit_val(buffer, dev->gpu_id);
 388         }
 389
 390         if (strcmp(attr->name, "name") == 0) {
 391                 dev = container_of(attr, struct kfd_topology_device,
 392                                 attr_name);
 393                 for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) {
 394                         public_name[i] =
 395                                         (char)dev->node_props.marketing_name[i];
 396                         if (dev->node_props.marketing_name[i] == 0)
 397                                 break;
 398                 }
 399                 public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0;
 400                 return sysfs_show_str_val(buffer, public_name);
 401         }
 402
 403         dev = container_of(attr, struct kfd_topology_device,
 404                         attr_props);
 405         sysfs_show_32bit_prop(buffer, "cpu_cores_count",
 406                         dev->node_props.cpu_cores_count);
 407         sysfs_show_32bit_prop(buffer, "simd_count",
 408                         dev->node_props.simd_count);
 409         sysfs_show_32bit_prop(buffer, "mem_banks_count",
 410                         dev->node_props.mem_banks_count);
 411         sysfs_show_32bit_prop(buffer, "caches_count",
 412                         dev->node_props.caches_count);
 413         sysfs_show_32bit_prop(buffer, "io_links_count",
 414                         dev->node_props.io_links_count);
 415         sysfs_show_32bit_prop(buffer, "cpu_core_id_base",
 416                         dev->node_props.cpu_core_id_base);
 417         sysfs_show_32bit_prop(buffer, "simd_id_base",
 418                         dev->node_props.simd_id_base);
 419         sysfs_show_32bit_prop(buffer, "max_waves_per_simd",
 420                         dev->node_props.max_waves_per_simd);
 421         sysfs_show_32bit_prop(buffer, "lds_size_in_kb",
 422                         dev->node_props.lds_size_in_kb);
 423         sysfs_show_32bit_prop(buffer, "gds_size_in_kb",
 424                         dev->node_props.gds_size_in_kb);
 425         sysfs_show_32bit_prop(buffer, "wave_front_size",
 426                         dev->node_props.wave_front_size);
 427         sysfs_show_32bit_prop(buffer, "array_count",
 428                         dev->node_props.array_count);
 429         sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine",
 430                         dev->node_props.simd_arrays_per_engine);
 431         sysfs_show_32bit_prop(buffer, "cu_per_simd_array",
 432                         dev->node_props.cu_per_simd_array);
 433         sysfs_show_32bit_prop(buffer, "simd_per_cu",
 434                         dev->node_props.simd_per_cu);
 435         sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu",
 436                         dev->node_props.max_slots_scratch_cu);
 437         sysfs_show_32bit_prop(buffer, "vendor_id",
 438                         dev->node_props.vendor_id);
 439         sysfs_show_32bit_prop(buffer, "device_id",
 440                         dev->node_props.device_id);
 441         sysfs_show_32bit_prop(buffer, "location_id",
 442                         dev->node_props.location_id);
 443
 444         if (dev->gpu) {
 445                 log_max_watch_addr =
 446                         __ilog2_u32(dev->gpu->device_info->num_of_watch_points);
 447
 448                 if (log_max_watch_addr) {
 449                         dev->node_props.capability |=
 450                                         HSA_CAP_WATCH_POINTS_SUPPORTED;
 451
 452                         dev->node_props.capability |=
 453                                 ((log_max_watch_addr <<
 454                                         HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) &
 455                                 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK);
 456                 }
 457
 458                 if (dev->gpu->device_info->asic_family == CHIP_TONGA)
 459                         dev->node_props.capability |=
 460                                         HSA_CAP_AQL_QUEUE_DOUBLE_MAP;
 461
 462                 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute",
 463                         dev->node_props.max_engine_clk_fcompute);
 464
 465                 sysfs_show_64bit_prop(buffer, "local_mem_size",
 466                                 (unsigned long long int) 0);
 467
 468                 sysfs_show_32bit_prop(buffer, "fw_version",
 469                         dev->gpu->kfd2kgd->get_fw_version(
 470                                                 dev->gpu->kgd,
 471                                                 KGD_ENGINE_MEC1));
 472                 sysfs_show_32bit_prop(buffer, "capability",
 473                                 dev->node_props.capability);
 474         }
 475
 476         return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute",
 477                                         cpufreq_quick_get_max(0)/1000);
 478 }
 479
 480 static const struct sysfs_ops node_ops = {
 481         .show = node_show,
 482 };
 483
 484 static struct kobj_type node_type = {
 485         .release = kfd_topology_kobj_release,
 486         .sysfs_ops = &node_ops,
 487 };
 488
 489 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr)
 490 {
 491         sysfs_remove_file(kobj, attr);
 492         kobject_del(kobj);
 493         kobject_put(kobj);
 494 }
 495
 496 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
 497 {
 498         struct kfd_iolink_properties *iolink;
 499         struct kfd_cache_properties *cache;
 500         struct kfd_mem_properties *mem;
 501         struct kfd_perf_properties *perf;
 502
 503         if (dev->kobj_iolink) {
 504                 list_for_each_entry(iolink, &dev->io_link_props, list)
 505                         if (iolink->kobj) {
 506                                 kfd_remove_sysfs_file(iolink->kobj,
 507                                                         &iolink->attr);
 508                                 iolink->kobj = NULL;
 509                         }
 510                 kobject_del(dev->kobj_iolink);
 511                 kobject_put(dev->kobj_iolink);
 512                 dev->kobj_iolink = NULL;
 513         }
 514
 515         if (dev->kobj_cache) {
 516                 list_for_each_entry(cache, &dev->cache_props, list)
 517                         if (cache->kobj) {
 518                                 kfd_remove_sysfs_file(cache->kobj,
 519                                                         &cache->attr);
 520                                 cache->kobj = NULL;
 521                         }
 522                 kobject_del(dev->kobj_cache);
 523                 kobject_put(dev->kobj_cache);
 524                 dev->kobj_cache = NULL;
 525         }
 526
 527         if (dev->kobj_mem) {
 528                 list_for_each_entry(mem, &dev->mem_props, list)
 529                         if (mem->kobj) {
 530                                 kfd_remove_sysfs_file(mem->kobj, &mem->attr);
 531                                 mem->kobj = NULL;
 532                         }
 533                 kobject_del(dev->kobj_mem);
 534                 kobject_put(dev->kobj_mem);
 535                 dev->kobj_mem = NULL;
 536         }
 537
 538         if (dev->kobj_perf) {
 539                 list_for_each_entry(perf, &dev->perf_props, list) {
 540                         kfree(perf->attr_group);
 541                         perf->attr_group = NULL;
 542                 }
 543                 kobject_del(dev->kobj_perf);
 544                 kobject_put(dev->kobj_perf);
 545                 dev->kobj_perf = NULL;
 546         }
 547
 548         if (dev->kobj_node) {
 549                 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid);
 550                 sysfs_remove_file(dev->kobj_node, &dev->attr_name);
 551                 sysfs_remove_file(dev->kobj_node, &dev->attr_props);
 552                 kobject_del(dev->kobj_node);
 553                 kobject_put(dev->kobj_node);
 554                 dev->kobj_node = NULL;
 555         }
 556 }
 557
 558 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
 559                 uint32_t id)
 560 {
 561         struct kfd_iolink_properties *iolink;
 562         struct kfd_cache_properties *cache;
 563         struct kfd_mem_properties *mem;
 564         struct kfd_perf_properties *perf;
 565         int ret;
 566         uint32_t i, num_attrs;
 567         struct attribute **attrs;
 568
 569         if (WARN_ON(dev->kobj_node))
 570                 return -EEXIST;
 571
 572         /*
 573          * Creating the sysfs folders
 574          */
 575         dev->kobj_node = kfd_alloc_struct(dev->kobj_node);
 576         if (!dev->kobj_node)
 577                 return -ENOMEM;
 578
 579         ret = kobject_init_and_add(dev->kobj_node, &node_type,
 580                         sys_props.kobj_nodes, "%d", id);
 581         if (ret < 0)
 582                 return ret;
 583
 584         dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node);
 585         if (!dev->kobj_mem)
 586                 return -ENOMEM;
 587
 588         dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node);
 589         if (!dev->kobj_cache)
 590                 return -ENOMEM;
 591
 592         dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node);
 593         if (!dev->kobj_iolink)
 594                 return -ENOMEM;
 595
 596         dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node);
 597         if (!dev->kobj_perf)
 598                 return -ENOMEM;
 599
 600         /*
 601          * Creating sysfs files for node properties
 602          */
 603         dev->attr_gpuid.name = "gpu_id";
 604         dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE;
 605         sysfs_attr_init(&dev->attr_gpuid);
 606         dev->attr_name.name = "name";
 607         dev->attr_name.mode = KFD_SYSFS_FILE_MODE;
 608         sysfs_attr_init(&dev->attr_name);
 609         dev->attr_props.name = "properties";
 610         dev->attr_props.mode = KFD_SYSFS_FILE_MODE;
 611         sysfs_attr_init(&dev->attr_props);
 612         ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid);
 613         if (ret < 0)
 614                 return ret;
 615         ret = sysfs_create_file(dev->kobj_node, &dev->attr_name);
 616         if (ret < 0)
 617                 return ret;
 618         ret = sysfs_create_file(dev->kobj_node, &dev->attr_props);
 619         if (ret < 0)
 620                 return ret;
 621
 622         i = 0;
 623         list_for_each_entry(mem, &dev->mem_props, list) {
 624                 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 625                 if (!mem->kobj)
 626                         return -ENOMEM;
 627                 ret = kobject_init_and_add(mem->kobj, &mem_type,
 628                                 dev->kobj_mem, "%d", i);
 629                 if (ret < 0)
 630                         return ret;
 631
 632                 mem->attr.name = "properties";
 633                 mem->attr.mode = KFD_SYSFS_FILE_MODE;
 634                 sysfs_attr_init(&mem->attr);
 635                 ret = sysfs_create_file(mem->kobj, &mem->attr);
 636                 if (ret < 0)
 637                         return ret;
 638                 i++;
 639         }
 640
 641         i = 0;
 642         list_for_each_entry(cache, &dev->cache_props, list) {
 643                 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 644                 if (!cache->kobj)
 645                         return -ENOMEM;
 646                 ret = kobject_init_and_add(cache->kobj, &cache_type,
 647                                 dev->kobj_cache, "%d", i);
 648                 if (ret < 0)
 649                         return ret;
 650
 651                 cache->attr.name = "properties";
 652                 cache->attr.mode = KFD_SYSFS_FILE_MODE;
 653                 sysfs_attr_init(&cache->attr);
 654                 ret = sysfs_create_file(cache->kobj, &cache->attr);
 655                 if (ret < 0)
 656                         return ret;
 657                 i++;
 658         }
 659
 660         i = 0;
 661         list_for_each_entry(iolink, &dev->io_link_props, list) {
 662                 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
 663                 if (!iolink->kobj)
 664                         return -ENOMEM;
 665                 ret = kobject_init_and_add(iolink->kobj, &iolink_type,
 666                                 dev->kobj_iolink, "%d", i);
 667                 if (ret < 0)
 668                         return ret;
 669
 670                 iolink->attr.name = "properties";
 671                 iolink->attr.mode = KFD_SYSFS_FILE_MODE;
 672                 sysfs_attr_init(&iolink->attr);
 673                 ret = sysfs_create_file(iolink->kobj, &iolink->attr);
 674                 if (ret < 0)
 675                         return ret;
 676                 i++;
 677         }
 678
 679         /* All hardware blocks have the same number of attributes. */
 680         num_attrs = sizeof(perf_attr_iommu)/sizeof(struct kfd_perf_attr);
 681         list_for_each_entry(perf, &dev->perf_props, list) {
 682                 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr)
 683                         * num_attrs + sizeof(struct attribute_group),
 684                         GFP_KERNEL);
 685                 if (!perf->attr_group)
 686                         return -ENOMEM;
 687
 688                 attrs = (struct attribute **)(perf->attr_group + 1);
 689                 if (!strcmp(perf->block_name, "iommu")) {
 690                 /* Information of IOMMU's num_counters and counter_ids is shown
 691                  * under /sys/bus/event_source/devices/amd_iommu. We don't
 692                  * duplicate here.
 693                  */
 694                         perf_attr_iommu[0].data = perf->max_concurrent;
 695                         for (i = 0; i < num_attrs; i++)
 696                                 attrs[i] = &perf_attr_iommu[i].attr.attr;
 697                 }
 698                 perf->attr_group->name = perf->block_name;
 699                 perf->attr_group->attrs = attrs;
 700                 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group);
 701                 if (ret < 0)
 702                         return ret;
 703         }
 704
 705         return 0;
 706 }
 707
 708 /* Called with write topology lock acquired */
 709 static int kfd_build_sysfs_node_tree(void)
 710 {
 711         struct kfd_topology_device *dev;
 712         int ret;
 713         uint32_t i = 0;
 714
 715         list_for_each_entry(dev, &topology_device_list, list) {
 716                 ret = kfd_build_sysfs_node_entry(dev, i);
 717                 if (ret < 0)
 718                         return ret;
 719                 i++;
 720         }
 721
 722         return 0;
 723 }
 724
 725 /* Called with write topology lock acquired */
 726 static void kfd_remove_sysfs_node_tree(void)
 727 {
 728         struct kfd_topology_device *dev;
 729
 730         list_for_each_entry(dev, &topology_device_list, list)
 731                 kfd_remove_sysfs_node_entry(dev);
 732 }
 733
 734 static int kfd_topology_update_sysfs(void)
 735 {
 736         int ret;
 737
 738         pr_info("Creating topology SYSFS entries\n");
 739         if (!sys_props.kobj_topology) {
 740                 sys_props.kobj_topology =
 741                                 kfd_alloc_struct(sys_props.kobj_topology);
 742                 if (!sys_props.kobj_topology)
 743                         return -ENOMEM;
 744
 745                 ret = kobject_init_and_add(sys_props.kobj_topology,
 746                                 &sysprops_type,  &kfd_device->kobj,
 747                                 "topology");
 748                 if (ret < 0)
 749                         return ret;
 750
 751                 sys_props.kobj_nodes = kobject_create_and_add("nodes",
 752                                 sys_props.kobj_topology);
 753                 if (!sys_props.kobj_nodes)
 754                         return -ENOMEM;
 755
 756                 sys_props.attr_genid.name = "generation_id";
 757                 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE;
 758                 sysfs_attr_init(&sys_props.attr_genid);
 759                 ret = sysfs_create_file(sys_props.kobj_topology,
 760                                 &sys_props.attr_genid);
 761                 if (ret < 0)
 762                         return ret;
 763
 764                 sys_props.attr_props.name = "system_properties";
 765                 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE;
 766                 sysfs_attr_init(&sys_props.attr_props);
 767                 ret = sysfs_create_file(sys_props.kobj_topology,
 768                                 &sys_props.attr_props);
 769                 if (ret < 0)
 770                         return ret;
 771         }
 772
 773         kfd_remove_sysfs_node_tree();
 774
 775         return kfd_build_sysfs_node_tree();
 776 }
 777
 778 static void kfd_topology_release_sysfs(void)
 779 {
 780         kfd_remove_sysfs_node_tree();
 781         if (sys_props.kobj_topology) {
 782                 sysfs_remove_file(sys_props.kobj_topology,
 783                                 &sys_props.attr_genid);
 784                 sysfs_remove_file(sys_props.kobj_topology,
 785                                 &sys_props.attr_props);
 786                 if (sys_props.kobj_nodes) {
 787                         kobject_del(sys_props.kobj_nodes);
 788                         kobject_put(sys_props.kobj_nodes);
 789                         sys_props.kobj_nodes = NULL;
 790                 }
 791                 kobject_del(sys_props.kobj_topology);
 792                 kobject_put(sys_props.kobj_topology);
 793                 sys_props.kobj_topology = NULL;
 794         }
 795 }
 796
 797 /* Called with write topology_lock acquired */
 798 static void kfd_topology_update_device_list(struct list_head *temp_list,
 799                                         struct list_head *master_list)
 800 {
 801         while (!list_empty(temp_list)) {
 802                 list_move_tail(temp_list->next, master_list);
 803                 sys_props.num_devices++;
 804         }
 805 }
 806
 807 static void kfd_debug_print_topology(void)
 808 {
 809         struct kfd_topology_device *dev;
 810
 811         down_read(&topology_lock);
 812
 813         dev = list_last_entry(&topology_device_list,
 814                         struct kfd_topology_device, list);
 815         if (dev) {
 816                 if (dev->node_props.cpu_cores_count &&
 817                                 dev->node_props.simd_count) {
 818                         pr_info("Topology: Add APU node [0x%0x:0x%0x]\n",
 819                                 dev->node_props.device_id,
 820                                 dev->node_props.vendor_id);
 821                 } else if (dev->node_props.cpu_cores_count)
 822                         pr_info("Topology: Add CPU node\n");
 823                 else if (dev->node_props.simd_count)
 824                         pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n",
 825                                 dev->node_props.device_id,
 826                                 dev->node_props.vendor_id);
 827         }
 828         up_read(&topology_lock);
 829 }
 830
 831 /* Helper function for intializing platform_xx members of
 832  * kfd_system_properties. Uses OEM info from the last CPU/APU node.
 833  */
 834 static void kfd_update_system_properties(void)
 835 {
 836         struct kfd_topology_device *dev;
 837
 838         down_read(&topology_lock);
 839         dev = list_last_entry(&topology_device_list,
 840                         struct kfd_topology_device, list);
 841         if (dev) {
 842                 sys_props.platform_id =
 843                         (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK;
 844                 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id);
 845                 sys_props.platform_rev = dev->oem_revision;
 846         }
 847         up_read(&topology_lock);
 848 }
 849
 850 static void find_system_memory(const struct dmi_header *dm,
 851         void *private)
 852 {
 853         struct kfd_mem_properties *mem;
 854         u16 mem_width, mem_clock;
 855         struct kfd_topology_device *kdev =
 856                 (struct kfd_topology_device *)private;
 857         const u8 *dmi_data = (const u8 *)(dm + 1);
 858
 859         if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) {
 860                 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6));
 861                 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11));
 862                 list_for_each_entry(mem, &kdev->mem_props, list) {
 863                         if (mem_width != 0xFFFF && mem_width != 0)
 864                                 mem->width = mem_width;
 865                         if (mem_clock != 0)
 866                                 mem->mem_clk_max = mem_clock;
 867                 }
 868         }
 869 }
 870
 871 /*
 872  * Performance counters information is not part of CRAT but we would like to
 873  * put them in the sysfs under topology directory for Thunk to get the data.
 874  * This function is called before updating the sysfs.
 875  */
 876 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev)
 877 {
 878         struct kfd_perf_properties *props;
 879
 880         if (amd_iommu_pc_supported()) {
 881                 props = kfd_alloc_struct(props);
 882                 if (!props)
 883                         return -ENOMEM;
 884                 strcpy(props->block_name, "iommu");
 885                 props->max_concurrent = amd_iommu_pc_get_max_banks(0) *
 886                         amd_iommu_pc_get_max_counters(0); /* assume one iommu */
 887                 list_add_tail(&props->list, &kdev->perf_props);
 888         }
 889
 890         return 0;
 891 }
 892
 893 /* kfd_add_non_crat_information - Add information that is not currently
 894  *      defined in CRAT but is necessary for KFD topology
 895  * @dev - topology device to which addition info is added
 896  */
 897 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev)
 898 {
 899         /* Check if CPU only node. */
 900         if (!kdev->gpu) {
 901                 /* Add system memory information */
 902                 dmi_walk(find_system_memory, kdev);
 903         }
 904         /* TODO: For GPU node, rearrange code from kfd_topology_add_device */
 905 }
 906
 907 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices.
 908  *      Ignore CRAT for all other devices. AMD APU is identified if both CPU
 909  *      and GPU cores are present.
 910  * @device_list - topology device list created by parsing ACPI CRAT table.
 911  * @return - TRUE if invalid, FALSE is valid.
 912  */
 913 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list)
 914 {
 915         struct kfd_topology_device *dev;
 916
 917         list_for_each_entry(dev, device_list, list) {
 918                 if (dev->node_props.cpu_cores_count &&
 919                         dev->node_props.simd_count)
 920                         return false;
 921         }
 922         pr_info("Ignoring ACPI CRAT on non-APU system\n");
 923         return true;
 924 }
 925
 926 int kfd_topology_init(void)
 927 {
 928         void *crat_image = NULL;
 929         size_t image_size = 0;
 930         int ret;
 931         struct list_head temp_topology_device_list;
 932         int cpu_only_node = 0;
 933         struct kfd_topology_device *kdev;
 934         int proximity_domain;
 935
 936         /* topology_device_list - Master list of all topology devices
 937          * temp_topology_device_list - temporary list created while parsing CRAT
 938          * or VCRAT. Once parsing is complete the contents of list is moved to
 939          * topology_device_list
 940          */
 941
 942         /* Initialize the head for the both the lists */
 943         INIT_LIST_HEAD(&topology_device_list);
 944         INIT_LIST_HEAD(&temp_topology_device_list);
 945         init_rwsem(&topology_lock);
 946
 947         memset(&sys_props, 0, sizeof(sys_props));
 948
 949         /* Proximity domains in ACPI CRAT tables start counting at
 950          * 0. The same should be true for virtual CRAT tables created
 951          * at this stage. GPUs added later in kfd_topology_add_device
 952          * use a counter.
 953          */
 954         proximity_domain = 0;
 955
 956         /*
 957          * Get the CRAT image from the ACPI. If ACPI doesn't have one
 958          * or if ACPI CRAT is invalid create a virtual CRAT.
 959          * NOTE: The current implementation expects all AMD APUs to have
 960          *      CRAT. If no CRAT is available, it is assumed to be a CPU
 961          */
 962         ret = kfd_create_crat_image_acpi(&crat_image, &image_size);
 963         if (!ret) {
 964                 ret = kfd_parse_crat_table(crat_image,
 965                                            &temp_topology_device_list,
 966                                            proximity_domain);
 967                 if (ret ||
 968                     kfd_is_acpi_crat_invalid(&temp_topology_device_list)) {
 969                         kfd_release_topology_device_list(
 970                                 &temp_topology_device_list);
 971                         kfd_destroy_crat_image(crat_image);
 972                         crat_image = NULL;
 973                 }
 974         }
 975
 976         if (!crat_image) {
 977                 ret = kfd_create_crat_image_virtual(&crat_image, &image_size,
 978                                                     COMPUTE_UNIT_CPU, NULL,
 979                                                     proximity_domain);
 980                 cpu_only_node = 1;
 981                 if (ret) {
 982                         pr_err("Error creating VCRAT table for CPU\n");
 983                         return ret;
 984                 }
 985
 986                 ret = kfd_parse_crat_table(crat_image,
 987                                            &temp_topology_device_list,
 988                                            proximity_domain);
 989                 if (ret) {
 990                         pr_err("Error parsing VCRAT table for CPU\n");
 991                         goto err;
 992                 }
 993         }
 994
 995         kdev = list_first_entry(&temp_topology_device_list,
 996                                 struct kfd_topology_device, list);
 997         kfd_add_perf_to_topology(kdev);
 998
 999         down_write(&topology_lock);
1000         kfd_topology_update_device_list(&temp_topology_device_list,
1001                                         &topology_device_list);
1002         atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1);
1003         ret = kfd_topology_update_sysfs();
1004         up_write(&topology_lock);
1005
1006         if (!ret) {
1007                 sys_props.generation_count++;
1008                 kfd_update_system_properties();
1009                 kfd_debug_print_topology();
1010                 pr_info("Finished initializing topology\n");
1011         } else
1012                 pr_err("Failed to update topology in sysfs ret=%d\n", ret);
1013
1014         /* For nodes with GPU, this information gets added
1015          * when GPU is detected (kfd_topology_add_device).
1016          */
1017         if (cpu_only_node) {
1018                 /* Add additional information to CPU only node created above */
1019                 down_write(&topology_lock);
1020                 kdev = list_first_entry(&topology_device_list,
1021                                 struct kfd_topology_device, list);
1022                 up_write(&topology_lock);
1023                 kfd_add_non_crat_information(kdev);
1024         }
1025
1026 err:
1027         kfd_destroy_crat_image(crat_image);
1028         return ret;
1029 }
1030
1031 void kfd_topology_shutdown(void)
1032 {
1033         down_write(&topology_lock);
1034         kfd_topology_release_sysfs();
1035         kfd_release_live_view();
1036         up_write(&topology_lock);
1037 }
1038
1039 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu)
1040 {
1041         uint32_t hashout;
1042         uint32_t buf[7];
1043         uint64_t local_mem_size;
1044         int i;
1045         struct kfd_local_mem_info local_mem_info;
1046
1047         if (!gpu)
1048                 return 0;
1049
1050         gpu->kfd2kgd->get_local_mem_info(gpu->kgd, &local_mem_info);
1051
1052         local_mem_size = local_mem_info.local_mem_size_private +
1053                         local_mem_info.local_mem_size_public;
1054
1055         buf[0] = gpu->pdev->devfn;
1056         buf[1] = gpu->pdev->subsystem_vendor;
1057         buf[2] = gpu->pdev->subsystem_device;
1058         buf[3] = gpu->pdev->device;
1059         buf[4] = gpu->pdev->bus->number;
1060         buf[5] = lower_32_bits(local_mem_size);
1061         buf[6] = upper_32_bits(local_mem_size);
1062
1063         for (i = 0, hashout = 0; i < 7; i++)
1064                 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH);
1065
1066         return hashout;
1067 }
1068 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If
1069  *              the GPU device is not already present in the topology device
1070  *              list then return NULL. This means a new topology device has to
1071  *              be created for this GPU.
1072  * TODO: Rather than assiging @gpu to first topology device withtout
1073  *              gpu attached, it will better to have more stringent check.
1074  */
1075 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
1076 {
1077         struct kfd_topology_device *dev;
1078         struct kfd_topology_device *out_dev = NULL;
1079
1080         down_write(&topology_lock);
1081         list_for_each_entry(dev, &topology_device_list, list)
1082                 if (!dev->gpu && (dev->node_props.simd_count > 0)) {
1083                         dev->gpu = gpu;
1084                         out_dev = dev;
1085                         break;
1086                 }
1087         up_write(&topology_lock);
1088         return out_dev;
1089 }
1090
1091 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival)
1092 {
1093         /*
1094          * TODO: Generate an event for thunk about the arrival/removal
1095          * of the GPU
1096          */
1097 }
1098
1099 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info,
1100  *              patch this after CRAT parsing.
1101  */
1102 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev)
1103 {
1104         struct kfd_mem_properties *mem;
1105         struct kfd_local_mem_info local_mem_info;
1106
1107         if (!dev)
1108                 return;
1109
1110         /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with
1111          * single bank of VRAM local memory.
1112          * for dGPUs - VCRAT reports only one bank of Local Memory
1113          * for APUs - If CRAT from ACPI reports more than one bank, then
1114          *      all the banks will report the same mem_clk_max information
1115          */
1116         dev->gpu->kfd2kgd->get_local_mem_info(dev->gpu->kgd,
1117                 &local_mem_info);
1118
1119         list_for_each_entry(mem, &dev->mem_props, list)
1120                 mem->mem_clk_max = local_mem_info.mem_clk_max;
1121 }
1122
1123 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
1124 {
1125         struct kfd_iolink_properties *link;
1126
1127         if (!dev || !dev->gpu)
1128                 return;
1129
1130         /* GPU only creates direck links so apply flags setting to all */
1131         if (dev->gpu->device_info->asic_family == CHIP_HAWAII)
1132                 list_for_each_entry(link, &dev->io_link_props, list)
1133                         link->flags = CRAT_IOLINK_FLAGS_ENABLED |
1134                                 CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1135                                 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1136 }
1137
1138 int kfd_topology_add_device(struct kfd_dev *gpu)
1139 {
1140         uint32_t gpu_id;
1141         struct kfd_topology_device *dev;
1142         struct kfd_cu_info cu_info;
1143         int res = 0;
1144         struct list_head temp_topology_device_list;
1145         void *crat_image = NULL;
1146         size_t image_size = 0;
1147         int proximity_domain;
1148
1149         INIT_LIST_HEAD(&temp_topology_device_list);
1150
1151         gpu_id = kfd_generate_gpu_id(gpu);
1152
1153         pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
1154
1155         proximity_domain = atomic_inc_return(&topology_crat_proximity_domain);
1156
1157         /* Check to see if this gpu device exists in the topology_device_list.
1158          * If so, assign the gpu to that device,
1159          * else create a Virtual CRAT for this gpu device and then parse that
1160          * CRAT to create a new topology device. Once created assign the gpu to
1161          * that topology device
1162          */
1163         dev = kfd_assign_gpu(gpu);
1164         if (!dev) {
1165                 res = kfd_create_crat_image_virtual(&crat_image, &image_size,
1166                                                     COMPUTE_UNIT_GPU, gpu,
1167                                                     proximity_domain);
1168                 if (res) {
1169                         pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n",
1170                                gpu_id);
1171                         return res;
1172                 }
1173                 res = kfd_parse_crat_table(crat_image,
1174                                            &temp_topology_device_list,
1175                                            proximity_domain);
1176                 if (res) {
1177                         pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n",
1178                                gpu_id);
1179                         goto err;
1180                 }
1181
1182                 down_write(&topology_lock);
1183                 kfd_topology_update_device_list(&temp_topology_device_list,
1184                         &topology_device_list);
1185
1186                 /* Update the SYSFS tree, since we added another topology
1187                  * device
1188                  */
1189                 res = kfd_topology_update_sysfs();
1190                 up_write(&topology_lock);
1191
1192                 if (!res)
1193                         sys_props.generation_count++;
1194                 else
1195                         pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n",
1196                                                 gpu_id, res);
1197                 dev = kfd_assign_gpu(gpu);
1198                 if (WARN_ON(!dev)) {
1199                         res = -ENODEV;
1200                         goto err;
1201                 }
1202         }
1203
1204         dev->gpu_id = gpu_id;
1205         gpu->id = gpu_id;
1206
1207         /* TODO: Move the following lines to function
1208          *      kfd_add_non_crat_information
1209          */
1210
1211         /* Fill-in additional information that is not available in CRAT but
1212          * needed for the topology
1213          */
1214
1215         dev->gpu->kfd2kgd->get_cu_info(dev->gpu->kgd, &cu_info);
1216         dev->node_props.simd_arrays_per_engine =
1217                 cu_info.num_shader_arrays_per_engine;
1218
1219         dev->node_props.vendor_id = gpu->pdev->vendor;
1220         dev->node_props.device_id = gpu->pdev->device;
1221         dev->node_props.location_id = PCI_DEVID(gpu->pdev->bus->number,
1222                 gpu->pdev->devfn);
1223         dev->node_props.max_engine_clk_fcompute =
1224                 dev->gpu->kfd2kgd->get_max_engine_clock_in_mhz(dev->gpu->kgd);
1225         dev->node_props.max_engine_clk_ccompute =
1226                 cpufreq_quick_get_max(0) / 1000;
1227
1228         kfd_fill_mem_clk_max_info(dev);
1229         kfd_fill_iolink_non_crat_info(dev);
1230
1231         switch (dev->gpu->device_info->asic_family) {
1232         case CHIP_KAVERI:
1233         case CHIP_HAWAII:
1234         case CHIP_TONGA:
1235                 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 <<
1236                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1237                         HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1238                 break;
1239         case CHIP_CARRIZO:
1240         case CHIP_FIJI:
1241         case CHIP_POLARIS10:
1242         case CHIP_POLARIS11:
1243                 pr_debug("Adding doorbell packet type capability\n");
1244                 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_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