drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.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
  24 #include <linux/slab.h>
  25 #include <linux/mutex.h>
  26 #include "kfd_device_queue_manager.h"
  27 #include "kfd_kernel_queue.h"
  28 #include "kfd_priv.h"
  29 #include "kfd_pm4_headers_vi.h"
  30 #include "kfd_pm4_opcodes.h"
  31
  32 static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
  33                                 unsigned int buffer_size_bytes)
  34 {
  35         unsigned int temp = *wptr + increment_bytes / sizeof(uint32_t);
  36
  37         WARN((temp * sizeof(uint32_t)) > buffer_size_bytes,
  38              "Runlist IB overflow");
  39         *wptr = temp;
  40 }
  41
  42 static unsigned int build_pm4_header(unsigned int opcode, size_t packet_size)
  43 {
  44         union PM4_MES_TYPE_3_HEADER header;
  45
  46         header.u32All = 0;
  47         header.opcode = opcode;
  48         header.count = packet_size/sizeof(uint32_t) - 2;
  49         header.type = PM4_TYPE_3;
  50
  51         return header.u32All;
  52 }
  53
  54 static void pm_calc_rlib_size(struct packet_manager *pm,
  55                                 unsigned int *rlib_size,
  56                                 bool *over_subscription)
  57 {
  58         unsigned int process_count, queue_count;
  59         unsigned int map_queue_size;
  60
  61         process_count = pm->dqm->processes_count;
  62         queue_count = pm->dqm->queue_count;
  63
  64         /* check if there is over subscription*/
  65         *over_subscription = false;
  66         if ((process_count > 1) || queue_count > get_queues_num(pm->dqm)) {
  67                 *over_subscription = true;
  68                 pr_debug("Over subscribed runlist\n");
  69         }
  70
  71         map_queue_size = sizeof(struct pm4_mes_map_queues);
  72         /* calculate run list ib allocation size */
  73         *rlib_size = process_count * sizeof(struct pm4_mes_map_process) +
  74                      queue_count * map_queue_size;
  75
  76         /*
  77          * Increase the allocation size in case we need a chained run list
  78          * when over subscription
  79          */
  80         if (*over_subscription)
  81                 *rlib_size += sizeof(struct pm4_mes_runlist);
  82
  83         pr_debug("runlist ib size %d\n", *rlib_size);
  84 }
  85
  86 static int pm_allocate_runlist_ib(struct packet_manager *pm,
  87                                 unsigned int **rl_buffer,
  88                                 uint64_t *rl_gpu_buffer,
  89                                 unsigned int *rl_buffer_size,
  90                                 bool *is_over_subscription)
  91 {
  92         int retval;
  93
  94         if (WARN_ON(pm->allocated))
  95                 return -EINVAL;
  96
  97         pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);
  98
  99         retval = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size,
 100                                         &pm->ib_buffer_obj);
 101
 102         if (retval) {
 103                 pr_err("Failed to allocate runlist IB\n");
 104                 return retval;
 105         }
 106
 107         *(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
 108         *rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;
 109
 110         memset(*rl_buffer, 0, *rl_buffer_size);
 111         pm->allocated = true;
 112         return retval;
 113 }
 114
 115 static int pm_create_runlist(struct packet_manager *pm, uint32_t *buffer,
 116                         uint64_t ib, size_t ib_size_in_dwords, bool chain)
 117 {
 118         struct pm4_mes_runlist *packet;
 119
 120         if (WARN_ON(!ib))
 121                 return -EFAULT;
 122
 123         packet = (struct pm4_mes_runlist *)buffer;
 124
 125         memset(buffer, 0, sizeof(struct pm4_mes_runlist));
 126         packet->header.u32All = build_pm4_header(IT_RUN_LIST,
 127                                                 sizeof(struct pm4_mes_runlist));
 128
 129         packet->bitfields4.ib_size = ib_size_in_dwords;
 130         packet->bitfields4.chain = chain ? 1 : 0;
 131         packet->bitfields4.offload_polling = 0;
 132         packet->bitfields4.valid = 1;
 133         packet->ordinal2 = lower_32_bits(ib);
 134         packet->bitfields3.ib_base_hi = upper_32_bits(ib);
 135
 136         return 0;
 137 }
 138
 139 static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer,
 140                                 struct qcm_process_device *qpd)
 141 {
 142         struct pm4_mes_map_process *packet;
 143
 144         packet = (struct pm4_mes_map_process *)buffer;
 145
 146         memset(buffer, 0, sizeof(struct pm4_mes_map_process));
 147
 148         packet->header.u32All = build_pm4_header(IT_MAP_PROCESS,
 149                                         sizeof(struct pm4_mes_map_process));
 150         packet->bitfields2.diq_enable = (qpd->is_debug) ? 1 : 0;
 151         packet->bitfields2.process_quantum = 1;
 152         packet->bitfields2.pasid = qpd->pqm->process->pasid;
 153         packet->bitfields3.page_table_base = qpd->page_table_base;
 154         packet->bitfields10.gds_size = qpd->gds_size;
 155         packet->bitfields10.num_gws = qpd->num_gws;
 156         packet->bitfields10.num_oac = qpd->num_oac;
 157         packet->bitfields10.num_queues = (qpd->is_debug) ? 0 : qpd->queue_count;
 158
 159         packet->sh_mem_config = qpd->sh_mem_config;
 160         packet->sh_mem_bases = qpd->sh_mem_bases;
 161         packet->sh_mem_ape1_base = qpd->sh_mem_ape1_base;
 162         packet->sh_mem_ape1_limit = qpd->sh_mem_ape1_limit;
 163
 164         /* TODO: scratch support */
 165         packet->sh_hidden_private_base_vmid = 0;
 166
 167         packet->gds_addr_lo = lower_32_bits(qpd->gds_context_area);
 168         packet->gds_addr_hi = upper_32_bits(qpd->gds_context_area);
 169
 170         return 0;
 171 }
 172
 173 static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer,
 174                 struct queue *q, bool is_static)
 175 {
 176         struct pm4_mes_map_queues *packet;
 177         bool use_static = is_static;
 178
 179         packet = (struct pm4_mes_map_queues *)buffer;
 180         memset(buffer, 0, sizeof(struct pm4_mes_map_queues));
 181
 182         packet->header.u32All = build_pm4_header(IT_MAP_QUEUES,
 183                                                 sizeof(struct pm4_mes_map_queues));
 184         packet->bitfields2.alloc_format =
 185                 alloc_format__mes_map_queues__one_per_pipe_vi;
 186         packet->bitfields2.num_queues = 1;
 187         packet->bitfields2.queue_sel =
 188                 queue_sel__mes_map_queues__map_to_hws_determined_queue_slots_vi;
 189
 190         packet->bitfields2.engine_sel =
 191                 engine_sel__mes_map_queues__compute_vi;
 192         packet->bitfields2.queue_type =
 193                 queue_type__mes_map_queues__normal_compute_vi;
 194
 195         switch (q->properties.type) {
 196         case KFD_QUEUE_TYPE_COMPUTE:
 197                 if (use_static)
 198                         packet->bitfields2.queue_type =
 199                 queue_type__mes_map_queues__normal_latency_static_queue_vi;
 200                 break;
 201         case KFD_QUEUE_TYPE_DIQ:
 202                 packet->bitfields2.queue_type =
 203                         queue_type__mes_map_queues__debug_interface_queue_vi;
 204                 break;
 205         case KFD_QUEUE_TYPE_SDMA:
 206                 packet->bitfields2.engine_sel = q->properties.sdma_engine_id +
 207                                 engine_sel__mes_map_queues__sdma0_vi;
 208                 use_static = false; /* no static queues under SDMA */
 209                 break;
 210         default:
 211                 WARN(1, "queue type %d", q->properties.type);
 212                 return -EINVAL;
 213         }
 214         packet->bitfields3.doorbell_offset =
 215                         q->properties.doorbell_off;
 216
 217         packet->mqd_addr_lo =
 218                         lower_32_bits(q->gart_mqd_addr);
 219
 220         packet->mqd_addr_hi =
 221                         upper_32_bits(q->gart_mqd_addr);
 222
 223         packet->wptr_addr_lo =
 224                         lower_32_bits((uint64_t)q->properties.write_ptr);
 225
 226         packet->wptr_addr_hi =
 227                         upper_32_bits((uint64_t)q->properties.write_ptr);
 228
 229         return 0;
 230 }
 231
 232 static int pm_create_runlist_ib(struct packet_manager *pm,
 233                                 struct list_head *queues,
 234                                 uint64_t *rl_gpu_addr,
 235                                 size_t *rl_size_bytes)
 236 {
 237         unsigned int alloc_size_bytes;
 238         unsigned int *rl_buffer, rl_wptr, i;
 239         int retval, proccesses_mapped;
 240         struct device_process_node *cur;
 241         struct qcm_process_device *qpd;
 242         struct queue *q;
 243         struct kernel_queue *kq;
 244         bool is_over_subscription;
 245
 246         rl_wptr = retval = proccesses_mapped = 0;
 247
 248         retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
 249                                 &alloc_size_bytes, &is_over_subscription);
 250         if (retval)
 251                 return retval;
 252
 253         *rl_size_bytes = alloc_size_bytes;
 254
 255         pr_debug("Building runlist ib process count: %d queues count %d\n",
 256                 pm->dqm->processes_count, pm->dqm->queue_count);
 257
 258         /* build the run list ib packet */
 259         list_for_each_entry(cur, queues, list) {
 260                 qpd = cur->qpd;
 261                 /* build map process packet */
 262                 if (proccesses_mapped >= pm->dqm->processes_count) {
 263                         pr_debug("Not enough space left in runlist IB\n");
 264                         pm_release_ib(pm);
 265                         return -ENOMEM;
 266                 }
 267
 268                 retval = pm_create_map_process(pm, &rl_buffer[rl_wptr], qpd);
 269                 if (retval)
 270                         return retval;
 271
 272                 proccesses_mapped++;
 273                 inc_wptr(&rl_wptr, sizeof(struct pm4_mes_map_process),
 274                                 alloc_size_bytes);
 275
 276                 list_for_each_entry(kq, &qpd->priv_queue_list, list) {
 277                         if (!kq->queue->properties.is_active)
 278                                 continue;
 279
 280                         pr_debug("static_queue, mapping kernel q %d, is debug status %d\n",
 281                                 kq->queue->queue, qpd->is_debug);
 282
 283                         retval = pm_create_map_queue(pm,
 284                                                 &rl_buffer[rl_wptr],
 285                                                 kq->queue,
 286                                                 qpd->is_debug);
 287                         if (retval)
 288                                 return retval;
 289
 290                         inc_wptr(&rl_wptr,
 291                                 sizeof(struct pm4_mes_map_queues),
 292                                 alloc_size_bytes);
 293                 }
 294
 295                 list_for_each_entry(q, &qpd->queues_list, list) {
 296                         if (!q->properties.is_active)
 297                                 continue;
 298
 299                         pr_debug("static_queue, mapping user queue %d, is debug status %d\n",
 300                                 q->queue, qpd->is_debug);
 301
 302                         retval = pm_create_map_queue(pm,
 303                                                 &rl_buffer[rl_wptr],
 304                                                 q,
 305                                                 qpd->is_debug);
 306
 307                         if (retval)
 308                                 return retval;
 309
 310                         inc_wptr(&rl_wptr,
 311                                 sizeof(struct pm4_mes_map_queues),
 312                                 alloc_size_bytes);
 313                 }
 314         }
 315
 316         pr_debug("Finished map process and queues to runlist\n");
 317
 318         if (is_over_subscription)
 319                 retval = pm_create_runlist(pm, &rl_buffer[rl_wptr],
 320                                         *rl_gpu_addr,
 321                                         alloc_size_bytes / sizeof(uint32_t),
 322                                         true);
 323
 324         for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
 325                 pr_debug("0x%2X ", rl_buffer[i]);
 326         pr_debug("\n");
 327
 328         return retval;
 329 }
 330
 331 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
 332 {
 333         pm->dqm = dqm;
 334         mutex_init(&pm->lock);
 335         pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
 336         if (!pm->priv_queue) {
 337                 mutex_destroy(&pm->lock);
 338                 return -ENOMEM;
 339         }
 340         pm->allocated = false;
 341
 342         return 0;
 343 }
 344
 345 void pm_uninit(struct packet_manager *pm)
 346 {
 347         mutex_destroy(&pm->lock);
 348         kernel_queue_uninit(pm->priv_queue);
 349 }
 350
 351 int pm_send_set_resources(struct packet_manager *pm,
 352                                 struct scheduling_resources *res)
 353 {
 354         struct pm4_mes_set_resources *packet;
 355         int retval = 0;
 356
 357         mutex_lock(&pm->lock);
 358         pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
 359                                         sizeof(*packet) / sizeof(uint32_t),
 360                                         (unsigned int **)&packet);
 361         if (!packet) {
 362                 pr_err("Failed to allocate buffer on kernel queue\n");
 363                 retval = -ENOMEM;
 364                 goto out;
 365         }
 366
 367         memset(packet, 0, sizeof(struct pm4_mes_set_resources));
 368         packet->header.u32All = build_pm4_header(IT_SET_RESOURCES,
 369                                         sizeof(struct pm4_mes_set_resources));
 370
 371         packet->bitfields2.queue_type =
 372                         queue_type__mes_set_resources__hsa_interface_queue_hiq;
 373         packet->bitfields2.vmid_mask = res->vmid_mask;
 374         packet->bitfields2.unmap_latency = KFD_UNMAP_LATENCY_MS / 100;
 375         packet->bitfields7.oac_mask = res->oac_mask;
 376         packet->bitfields8.gds_heap_base = res->gds_heap_base;
 377         packet->bitfields8.gds_heap_size = res->gds_heap_size;
 378
 379         packet->gws_mask_lo = lower_32_bits(res->gws_mask);
 380         packet->gws_mask_hi = upper_32_bits(res->gws_mask);
 381
 382         packet->queue_mask_lo = lower_32_bits(res->queue_mask);
 383         packet->queue_mask_hi = upper_32_bits(res->queue_mask);
 384
 385         pm->priv_queue->ops.submit_packet(pm->priv_queue);
 386
 387 out:
 388         mutex_unlock(&pm->lock);
 389
 390         return retval;
 391 }
 392
 393 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
 394 {
 395         uint64_t rl_gpu_ib_addr;
 396         uint32_t *rl_buffer;
 397         size_t rl_ib_size, packet_size_dwords;
 398         int retval;
 399
 400         retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
 401                                         &rl_ib_size);
 402         if (retval)
 403                 goto fail_create_runlist_ib;
 404
 405         pr_debug("runlist IB address: 0x%llX\n", rl_gpu_ib_addr);
 406
 407         packet_size_dwords = sizeof(struct pm4_mes_runlist) / sizeof(uint32_t);
 408         mutex_lock(&pm->lock);
 409
 410         retval = pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
 411                                         packet_size_dwords, &rl_buffer);
 412         if (retval)
 413                 goto fail_acquire_packet_buffer;
 414
 415         retval = pm_create_runlist(pm, rl_buffer, rl_gpu_ib_addr,
 416                                         rl_ib_size / sizeof(uint32_t), false);
 417         if (retval)
 418                 goto fail_create_runlist;
 419
 420         pm->priv_queue->ops.submit_packet(pm->priv_queue);
 421
 422         mutex_unlock(&pm->lock);
 423
 424         return retval;
 425
 426 fail_create_runlist:
 427         pm->priv_queue->ops.rollback_packet(pm->priv_queue);
 428 fail_acquire_packet_buffer:
 429         mutex_unlock(&pm->lock);
 430 fail_create_runlist_ib:
 431         pm_release_ib(pm);
 432         return retval;
 433 }
 434
 435 int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
 436                         uint32_t fence_value)
 437 {
 438         int retval;
 439         struct pm4_mes_query_status *packet;
 440
 441         if (WARN_ON(!fence_address))
 442                 return -EFAULT;
 443
 444         mutex_lock(&pm->lock);
 445         retval = pm->priv_queue->ops.acquire_packet_buffer(
 446                         pm->priv_queue,
 447                         sizeof(struct pm4_mes_query_status) / sizeof(uint32_t),
 448                         (unsigned int **)&packet);
 449         if (retval)
 450                 goto fail_acquire_packet_buffer;
 451
 452         packet->header.u32All = build_pm4_header(IT_QUERY_STATUS,
 453                                         sizeof(struct pm4_mes_query_status));
 454
 455         packet->bitfields2.context_id = 0;
 456         packet->bitfields2.interrupt_sel =
 457                         interrupt_sel__mes_query_status__completion_status;
 458         packet->bitfields2.command =
 459                         command__mes_query_status__fence_only_after_write_ack;
 460
 461         packet->addr_hi = upper_32_bits((uint64_t)fence_address);
 462         packet->addr_lo = lower_32_bits((uint64_t)fence_address);
 463         packet->data_hi = upper_32_bits((uint64_t)fence_value);
 464         packet->data_lo = lower_32_bits((uint64_t)fence_value);
 465
 466         pm->priv_queue->ops.submit_packet(pm->priv_queue);
 467
 468 fail_acquire_packet_buffer:
 469         mutex_unlock(&pm->lock);
 470         return retval;
 471 }
 472
 473 int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
 474                         enum kfd_unmap_queues_filter filter,
 475                         uint32_t filter_param, bool reset,
 476                         unsigned int sdma_engine)
 477 {
 478         int retval;
 479         uint32_t *buffer;
 480         struct pm4_mes_unmap_queues *packet;
 481
 482         mutex_lock(&pm->lock);
 483         retval = pm->priv_queue->ops.acquire_packet_buffer(
 484                         pm->priv_queue,
 485                         sizeof(struct pm4_mes_unmap_queues) / sizeof(uint32_t),
 486                         &buffer);
 487         if (retval)
 488                 goto err_acquire_packet_buffer;
 489
 490         packet = (struct pm4_mes_unmap_queues *)buffer;
 491         memset(buffer, 0, sizeof(struct pm4_mes_unmap_queues));
 492         pr_debug("static_queue: unmapping queues: filter is %d , reset is %d , type is %d\n",
 493                 filter, reset, type);
 494         packet->header.u32All = build_pm4_header(IT_UNMAP_QUEUES,
 495                                         sizeof(struct pm4_mes_unmap_queues));
 496         switch (type) {
 497         case KFD_QUEUE_TYPE_COMPUTE:
 498         case KFD_QUEUE_TYPE_DIQ:
 499                 packet->bitfields2.engine_sel =
 500                         engine_sel__mes_unmap_queues__compute;
 501                 break;
 502         case KFD_QUEUE_TYPE_SDMA:
 503                 packet->bitfields2.engine_sel =
 504                         engine_sel__mes_unmap_queues__sdma0 + sdma_engine;
 505                 break;
 506         default:
 507                 WARN(1, "queue type %d", type);
 508                 retval = -EINVAL;
 509                 goto err_invalid;
 510         }
 511
 512         if (reset)
 513                 packet->bitfields2.action =
 514                                 action__mes_unmap_queues__reset_queues;
 515         else
 516                 packet->bitfields2.action =
 517                                 action__mes_unmap_queues__preempt_queues;
 518
 519         switch (filter) {
 520         case KFD_UNMAP_QUEUES_FILTER_SINGLE_QUEUE:
 521                 packet->bitfields2.queue_sel =
 522                                 queue_sel__mes_unmap_queues__perform_request_on_specified_queues;
 523                 packet->bitfields2.num_queues = 1;
 524                 packet->bitfields3b.doorbell_offset0 = filter_param;
 525                 break;
 526         case KFD_UNMAP_QUEUES_FILTER_BY_PASID:
 527                 packet->bitfields2.queue_sel =
 528                                 queue_sel__mes_unmap_queues__perform_request_on_pasid_queues;
 529                 packet->bitfields3a.pasid = filter_param;
 530                 break;
 531         case KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES:
 532                 packet->bitfields2.queue_sel =
 533                                 queue_sel__mes_unmap_queues__unmap_all_queues;
 534                 break;
 535         case KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES:
 536                 /* in this case, we do not preempt static queues */
 537                 packet->bitfields2.queue_sel =
 538                                 queue_sel__mes_unmap_queues__unmap_all_non_static_queues;
 539                 break;
 540         default:
 541                 WARN(1, "filter %d", filter);
 542                 retval = -EINVAL;
 543                 goto err_invalid;
 544         }
 545
 546         pm->priv_queue->ops.submit_packet(pm->priv_queue);
 547
 548         mutex_unlock(&pm->lock);
 549         return 0;
 550
 551 err_invalid:
 552         pm->priv_queue->ops.rollback_packet(pm->priv_queue);
 553 err_acquire_packet_buffer:
 554         mutex_unlock(&pm->lock);
 555         return retval;
 556 }
 557
 558 void pm_release_ib(struct packet_manager *pm)
 559 {
 560         mutex_lock(&pm->lock);
 561         if (pm->allocated) {
 562                 kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);
 563                 pm->allocated = false;
 564         }
 565         mutex_unlock(&pm->lock);
 566 }