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.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         BUG_ON((temp * sizeof(uint32_t)) > buffer_size_bytes);
  38         *wptr = temp;
  39 }
  40
  41 static unsigned int build_pm4_header(unsigned int opcode, size_t packet_size)
  42 {
  43         union PM4_MES_TYPE_3_HEADER header;
  44
  45         header.u32all = 0;
  46         header.opcode = opcode;
  47         header.count = packet_size/sizeof(uint32_t) - 2;
  48         header.type = PM4_TYPE_3;
  49
  50         return header.u32all;
  51 }
  52
  53 static void pm_calc_rlib_size(struct packet_manager *pm,
  54                                 unsigned int *rlib_size,
  55                                 bool *over_subscription)
  56 {
  57         unsigned int process_count, queue_count;
  58
  59         BUG_ON(!pm || !rlib_size || !over_subscription);
  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) ||
  67                 queue_count > PIPE_PER_ME_CP_SCHEDULING * QUEUES_PER_PIPE) {
  68                 *over_subscription = true;
  69                 pr_debug("kfd: over subscribed runlist\n");
  70         }
  71
  72         /* calculate run list ib allocation size */
  73         *rlib_size = process_count * sizeof(struct pm4_map_process) +
  74                      queue_count * sizeof(struct pm4_map_queues);
  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_runlist);
  82
  83         pr_debug("kfd: 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         BUG_ON(!pm);
  95         BUG_ON(pm->allocated == true);
  96         BUG_ON(is_over_subscription == NULL);
  97
  98         pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);
  99
 100         retval = kfd2kgd->allocate_mem(pm->dqm->dev->kgd,
 101                                         *rl_buffer_size,
 102                                         PAGE_SIZE,
 103                                         KFD_MEMPOOL_SYSTEM_WRITECOMBINE,
 104                                         (struct kgd_mem **) &pm->ib_buffer_obj);
 105
 106         if (retval != 0) {
 107                 pr_err("kfd: failed to allocate runlist IB\n");
 108                 return retval;
 109         }
 110
 111         *(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
 112         *rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;
 113
 114         memset(*rl_buffer, 0, *rl_buffer_size);
 115         pm->allocated = true;
 116         return retval;
 117 }
 118
 119 static int pm_create_runlist(struct packet_manager *pm, uint32_t *buffer,
 120                         uint64_t ib, size_t ib_size_in_dwords, bool chain)
 121 {
 122         struct pm4_runlist *packet;
 123
 124         BUG_ON(!pm || !buffer || !ib);
 125
 126         packet = (struct pm4_runlist *)buffer;
 127
 128         memset(buffer, 0, sizeof(struct pm4_runlist));
 129         packet->header.u32all = build_pm4_header(IT_RUN_LIST,
 130                                                 sizeof(struct pm4_runlist));
 131
 132         packet->bitfields4.ib_size = ib_size_in_dwords;
 133         packet->bitfields4.chain = chain ? 1 : 0;
 134         packet->bitfields4.offload_polling = 0;
 135         packet->bitfields4.valid = 1;
 136         packet->ordinal2 = lower_32_bits(ib);
 137         packet->bitfields3.ib_base_hi = upper_32_bits(ib);
 138
 139         return 0;
 140 }
 141
 142 static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer,
 143                                 struct qcm_process_device *qpd)
 144 {
 145         struct pm4_map_process *packet;
 146         struct queue *cur;
 147         uint32_t num_queues;
 148
 149         BUG_ON(!pm || !buffer || !qpd);
 150
 151         packet = (struct pm4_map_process *)buffer;
 152
 153         pr_debug("kfd: In func %s\n", __func__);
 154
 155         memset(buffer, 0, sizeof(struct pm4_map_process));
 156
 157         packet->header.u32all = build_pm4_header(IT_MAP_PROCESS,
 158                                         sizeof(struct pm4_map_process));
 159         packet->bitfields2.diq_enable = (qpd->is_debug) ? 1 : 0;
 160         packet->bitfields2.process_quantum = 1;
 161         packet->bitfields2.pasid = qpd->pqm->process->pasid;
 162         packet->bitfields3.page_table_base = qpd->page_table_base;
 163         packet->bitfields10.gds_size = qpd->gds_size;
 164         packet->bitfields10.num_gws = qpd->num_gws;
 165         packet->bitfields10.num_oac = qpd->num_oac;
 166         num_queues = 0;
 167         list_for_each_entry(cur, &qpd->queues_list, list)
 168                 num_queues++;
 169         packet->bitfields10.num_queues = num_queues;
 170
 171         packet->sh_mem_config = qpd->sh_mem_config;
 172         packet->sh_mem_bases = qpd->sh_mem_bases;
 173         packet->sh_mem_ape1_base = qpd->sh_mem_ape1_base;
 174         packet->sh_mem_ape1_limit = qpd->sh_mem_ape1_limit;
 175
 176         packet->gds_addr_lo = lower_32_bits(qpd->gds_context_area);
 177         packet->gds_addr_hi = upper_32_bits(qpd->gds_context_area);
 178
 179         return 0;
 180 }
 181
 182 static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer,
 183                                 struct queue *q)
 184 {
 185         struct pm4_map_queues *packet;
 186
 187         BUG_ON(!pm || !buffer || !q);
 188
 189         pr_debug("kfd: In func %s\n", __func__);
 190
 191         packet = (struct pm4_map_queues *)buffer;
 192         memset(buffer, 0, sizeof(struct pm4_map_queues));
 193
 194         packet->header.u32all = build_pm4_header(IT_MAP_QUEUES,
 195                                                 sizeof(struct pm4_map_queues));
 196         packet->bitfields2.alloc_format =
 197                                 alloc_format__mes_map_queues__one_per_pipe;
 198         packet->bitfields2.num_queues = 1;
 199         packet->bitfields2.queue_sel =
 200                 queue_sel__mes_map_queues__map_to_hws_determined_queue_slots;
 201
 202         packet->bitfields2.vidmem = (q->properties.is_interop) ?
 203                         vidmem__mes_map_queues__uses_video_memory :
 204                         vidmem__mes_map_queues__uses_no_video_memory;
 205
 206         switch (q->properties.type) {
 207         case KFD_QUEUE_TYPE_COMPUTE:
 208         case KFD_QUEUE_TYPE_DIQ:
 209                 packet->bitfields2.engine_sel =
 210                                 engine_sel__mes_map_queues__compute;
 211                 break;
 212         case KFD_QUEUE_TYPE_SDMA:
 213                 packet->bitfields2.engine_sel =
 214                                 engine_sel__mes_map_queues__sdma0;
 215                 break;
 216         default:
 217                 BUG();
 218                 break;
 219         }
 220
 221         packet->mes_map_queues_ordinals[0].bitfields3.doorbell_offset =
 222                         q->properties.doorbell_off;
 223
 224         packet->mes_map_queues_ordinals[0].mqd_addr_lo =
 225                         lower_32_bits(q->gart_mqd_addr);
 226
 227         packet->mes_map_queues_ordinals[0].mqd_addr_hi =
 228                         upper_32_bits(q->gart_mqd_addr);
 229
 230         packet->mes_map_queues_ordinals[0].wptr_addr_lo =
 231                         lower_32_bits((uint64_t)q->properties.write_ptr);
 232
 233         packet->mes_map_queues_ordinals[0].wptr_addr_hi =
 234                         upper_32_bits((uint64_t)q->properties.write_ptr);
 235
 236         return 0;
 237 }
 238
 239 static int pm_create_runlist_ib(struct packet_manager *pm,
 240                                 struct list_head *queues,
 241                                 uint64_t *rl_gpu_addr,
 242                                 size_t *rl_size_bytes)
 243 {
 244         unsigned int alloc_size_bytes;
 245         unsigned int *rl_buffer, rl_wptr, i;
 246         int retval, proccesses_mapped;
 247         struct device_process_node *cur;
 248         struct qcm_process_device *qpd;
 249         struct queue *q;
 250         struct kernel_queue *kq;
 251         bool is_over_subscription;
 252
 253         BUG_ON(!pm || !queues || !rl_size_bytes || !rl_gpu_addr);
 254
 255         rl_wptr = retval = proccesses_mapped = 0;
 256
 257         retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
 258                                 &alloc_size_bytes, &is_over_subscription);
 259         if (retval != 0)
 260                 return retval;
 261
 262         *rl_size_bytes = alloc_size_bytes;
 263
 264         pr_debug("kfd: In func %s\n", __func__);
 265         pr_debug("kfd: building runlist ib process count: %d queues count %d\n",
 266                 pm->dqm->processes_count, pm->dqm->queue_count);
 267
 268         /* build the run list ib packet */
 269         list_for_each_entry(cur, queues, list) {
 270                 qpd = cur->qpd;
 271                 /* build map process packet */
 272                 if (proccesses_mapped >= pm->dqm->processes_count) {
 273                         pr_debug("kfd: not enough space left in runlist IB\n");
 274                         pm_release_ib(pm);
 275                         return -ENOMEM;
 276                 }
 277                 retval = pm_create_map_process(pm, &rl_buffer[rl_wptr], qpd);
 278                 if (retval != 0)
 279                         return retval;
 280                 proccesses_mapped++;
 281                 inc_wptr(&rl_wptr, sizeof(struct pm4_map_process),
 282                                 alloc_size_bytes);
 283
 284                 list_for_each_entry(kq, &qpd->priv_queue_list, list) {
 285                         if (kq->queue->properties.is_active != true)
 286                                 continue;
 287                         retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr],
 288                                                         kq->queue);
 289                         if (retval != 0)
 290                                 return retval;
 291                         inc_wptr(&rl_wptr, sizeof(struct pm4_map_queues),
 292                                         alloc_size_bytes);
 293                 }
 294
 295                 list_for_each_entry(q, &qpd->queues_list, list) {
 296                         if (q->properties.is_active != true)
 297                                 continue;
 298                         retval = pm_create_map_queue(pm,
 299                                                 &rl_buffer[rl_wptr], q);
 300                         if (retval != 0)
 301                                 return retval;
 302                         inc_wptr(&rl_wptr, sizeof(struct pm4_map_queues),
 303                                         alloc_size_bytes);
 304                 }
 305         }
 306
 307         pr_debug("kfd: finished map process and queues to runlist\n");
 308
 309         if (is_over_subscription)
 310                 pm_create_runlist(pm, &rl_buffer[rl_wptr], *rl_gpu_addr,
 311                                 alloc_size_bytes / sizeof(uint32_t), true);
 312
 313         for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
 314                 pr_debug("0x%2X ", rl_buffer[i]);
 315         pr_debug("\n");
 316
 317         return 0;
 318 }
 319
 320 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
 321 {
 322         BUG_ON(!dqm);
 323
 324         pm->dqm = dqm;
 325         mutex_init(&pm->lock);
 326         pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
 327         if (pm->priv_queue == NULL) {
 328                 mutex_destroy(&pm->lock);
 329                 return -ENOMEM;
 330         }
 331         pm->allocated = false;
 332
 333         return 0;
 334 }
 335
 336 void pm_uninit(struct packet_manager *pm)
 337 {
 338         BUG_ON(!pm);
 339
 340         mutex_destroy(&pm->lock);
 341         kernel_queue_uninit(pm->priv_queue);
 342 }
 343
 344 int pm_send_set_resources(struct packet_manager *pm,
 345                                 struct scheduling_resources *res)
 346 {
 347         struct pm4_set_resources *packet;
 348
 349         BUG_ON(!pm || !res);
 350
 351         pr_debug("kfd: In func %s\n", __func__);
 352
 353         mutex_lock(&pm->lock);
 354         pm->priv_queue->acquire_packet_buffer(pm->priv_queue,
 355                                         sizeof(*packet) / sizeof(uint32_t),
 356                         (unsigned int **)&packet);
 357         if (packet == NULL) {
 358                 mutex_unlock(&pm->lock);
 359                 pr_err("kfd: failed to allocate buffer on kernel queue\n");
 360                 return -ENOMEM;
 361         }
 362
 363         memset(packet, 0, sizeof(struct pm4_set_resources));
 364         packet->header.u32all = build_pm4_header(IT_SET_RESOURCES,
 365                                         sizeof(struct pm4_set_resources));
 366
 367         packet->bitfields2.queue_type =
 368                         queue_type__mes_set_resources__hsa_interface_queue_hiq;
 369         packet->bitfields2.vmid_mask = res->vmid_mask;
 370         packet->bitfields2.unmap_latency = KFD_UNMAP_LATENCY;
 371         packet->bitfields7.oac_mask = res->oac_mask;
 372         packet->bitfields8.gds_heap_base = res->gds_heap_base;
 373         packet->bitfields8.gds_heap_size = res->gds_heap_size;
 374
 375         packet->gws_mask_lo = lower_32_bits(res->gws_mask);
 376         packet->gws_mask_hi = upper_32_bits(res->gws_mask);
 377
 378         packet->queue_mask_lo = lower_32_bits(res->queue_mask);
 379         packet->queue_mask_hi = upper_32_bits(res->queue_mask);
 380
 381         pm->priv_queue->submit_packet(pm->priv_queue);
 382         pm->priv_queue->sync_with_hw(pm->priv_queue, KFD_HIQ_TIMEOUT);
 383
 384         mutex_unlock(&pm->lock);
 385
 386         return 0;
 387 }
 388
 389 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
 390 {
 391         uint64_t rl_gpu_ib_addr;
 392         uint32_t *rl_buffer;
 393         size_t rl_ib_size, packet_size_dwords;
 394         int retval;
 395
 396         BUG_ON(!pm || !dqm_queues);
 397
 398         retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
 399                                         &rl_ib_size);
 400         if (retval != 0)
 401                 goto fail_create_runlist_ib;
 402
 403         pr_debug("kfd: runlist IB address: 0x%llX\n", rl_gpu_ib_addr);
 404
 405         packet_size_dwords = sizeof(struct pm4_runlist) / sizeof(uint32_t);
 406         mutex_lock(&pm->lock);
 407
 408         retval = pm->priv_queue->acquire_packet_buffer(pm->priv_queue,
 409                                         packet_size_dwords, &rl_buffer);
 410         if (retval != 0)
 411                 goto fail_acquire_packet_buffer;
 412
 413         retval = pm_create_runlist(pm, rl_buffer, rl_gpu_ib_addr,
 414                                         rl_ib_size / sizeof(uint32_t), false);
 415         if (retval != 0)
 416                 goto fail_create_runlist;
 417
 418         pm->priv_queue->submit_packet(pm->priv_queue);
 419         pm->priv_queue->sync_with_hw(pm->priv_queue, KFD_HIQ_TIMEOUT);
 420
 421         mutex_unlock(&pm->lock);
 422
 423         return retval;
 424
 425 fail_create_runlist:
 426         pm->priv_queue->rollback_packet(pm->priv_queue);
 427 fail_acquire_packet_buffer:
 428         mutex_unlock(&pm->lock);
 429 fail_create_runlist_ib:
 430         if (pm->allocated == true)
 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_query_status *packet;
 440
 441         BUG_ON(!pm || !fence_address);
 442
 443         mutex_lock(&pm->lock);
 444         retval = pm->priv_queue->acquire_packet_buffer(
 445                         pm->priv_queue,
 446                         sizeof(struct pm4_query_status) / sizeof(uint32_t),
 447                         (unsigned int **)&packet);
 448         if (retval != 0)
 449                 goto fail_acquire_packet_buffer;
 450
 451         packet->header.u32all = build_pm4_header(IT_QUERY_STATUS,
 452                                         sizeof(struct pm4_query_status));
 453
 454         packet->bitfields2.context_id = 0;
 455         packet->bitfields2.interrupt_sel =
 456                         interrupt_sel__mes_query_status__completion_status;
 457         packet->bitfields2.command =
 458                         command__mes_query_status__fence_only_after_write_ack;
 459
 460         packet->addr_hi = upper_32_bits((uint64_t)fence_address);
 461         packet->addr_lo = lower_32_bits((uint64_t)fence_address);
 462         packet->data_hi = upper_32_bits((uint64_t)fence_value);
 463         packet->data_lo = lower_32_bits((uint64_t)fence_value);
 464
 465         pm->priv_queue->submit_packet(pm->priv_queue);
 466         pm->priv_queue->sync_with_hw(pm->priv_queue, KFD_HIQ_TIMEOUT);
 467         mutex_unlock(&pm->lock);
 468
 469         return 0;
 470
 471 fail_acquire_packet_buffer:
 472         mutex_unlock(&pm->lock);
 473         return retval;
 474 }
 475
 476 int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
 477                         enum kfd_preempt_type_filter mode,
 478                         uint32_t filter_param, bool reset,
 479                         unsigned int sdma_engine)
 480 {
 481         int retval;
 482         uint32_t *buffer;
 483         struct pm4_unmap_queues *packet;
 484
 485         BUG_ON(!pm);
 486
 487         mutex_lock(&pm->lock);
 488         retval = pm->priv_queue->acquire_packet_buffer(
 489                         pm->priv_queue,
 490                         sizeof(struct pm4_unmap_queues) / sizeof(uint32_t),
 491                         &buffer);
 492         if (retval != 0)
 493                 goto err_acquire_packet_buffer;
 494
 495         packet = (struct pm4_unmap_queues *)buffer;
 496         memset(buffer, 0, sizeof(struct pm4_unmap_queues));
 497
 498         packet->header.u32all = build_pm4_header(IT_UNMAP_QUEUES,
 499                                         sizeof(struct pm4_unmap_queues));
 500         switch (type) {
 501         case KFD_QUEUE_TYPE_COMPUTE:
 502         case KFD_QUEUE_TYPE_DIQ:
 503                 packet->bitfields2.engine_sel =
 504                         engine_sel__mes_unmap_queues__compute;
 505                 break;
 506         case KFD_QUEUE_TYPE_SDMA:
 507                 packet->bitfields2.engine_sel =
 508                         engine_sel__mes_unmap_queues__sdma0 + sdma_engine;
 509                 break;
 510         default:
 511                 BUG();
 512                 break;
 513         }
 514
 515         if (reset)
 516                 packet->bitfields2.action =
 517                                 action__mes_unmap_queues__reset_queues;
 518         else
 519                 packet->bitfields2.action =
 520                                 action__mes_unmap_queues__preempt_queues;
 521
 522         switch (mode) {
 523         case KFD_PREEMPT_TYPE_FILTER_SINGLE_QUEUE:
 524                 packet->bitfields2.queue_sel =
 525                                 queue_sel__mes_unmap_queues__perform_request_on_specified_queues;
 526                 packet->bitfields2.num_queues = 1;
 527                 packet->bitfields3b.doorbell_offset0 = filter_param;
 528                 break;
 529         case KFD_PREEMPT_TYPE_FILTER_BY_PASID:
 530                 packet->bitfields2.queue_sel =
 531                                 queue_sel__mes_unmap_queues__perform_request_on_pasid_queues;
 532                 packet->bitfields3a.pasid = filter_param;
 533                 break;
 534         case KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES:
 535                 packet->bitfields2.queue_sel =
 536                                 queue_sel__mes_unmap_queues__perform_request_on_all_active_queues;
 537                 break;
 538         default:
 539                 BUG();
 540                 break;
 541         };
 542
 543         pm->priv_queue->submit_packet(pm->priv_queue);
 544         pm->priv_queue->sync_with_hw(pm->priv_queue, KFD_HIQ_TIMEOUT);
 545
 546         mutex_unlock(&pm->lock);
 547         return 0;
 548
 549 err_acquire_packet_buffer:
 550         mutex_unlock(&pm->lock);
 551         return retval;
 552 }
 553
 554 void pm_release_ib(struct packet_manager *pm)
 555 {
 556         BUG_ON(!pm);
 557
 558         mutex_lock(&pm->lock);
 559         if (pm->allocated) {
 560                 kfd2kgd->free_mem(pm->dqm->dev->kgd,
 561                                 (struct kgd_mem *) pm->ib_buffer_obj);
 562                 pm->allocated = false;
 563         }
 564         mutex_unlock(&pm->lock);
 565 }