kernel/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 = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size,
 101                                         &pm->ib_buffer_obj);
 102
 103         if (retval != 0) {
 104                 pr_err("kfd: failed to allocate runlist IB\n");
 105                 return retval;
 106         }
 107
 108         *(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
 109         *rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;
 110
 111         memset(*rl_buffer, 0, *rl_buffer_size);
 112         pm->allocated = true;
 113         return retval;
 114 }
 115
 116 static int pm_create_runlist(struct packet_manager *pm, uint32_t *buffer,
 117                         uint64_t ib, size_t ib_size_in_dwords, bool chain)
 118 {
 119         struct pm4_runlist *packet;
 120
 121         BUG_ON(!pm || !buffer || !ib);
 122
 123         packet = (struct pm4_runlist *)buffer;
 124
 125         memset(buffer, 0, sizeof(struct pm4_runlist));
 126         packet->header.u32all = build_pm4_header(IT_RUN_LIST,
 127                                                 sizeof(struct pm4_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_map_process *packet;
 143         struct queue *cur;
 144         uint32_t num_queues;
 145
 146         BUG_ON(!pm || !buffer || !qpd);
 147
 148         packet = (struct pm4_map_process *)buffer;
 149
 150         pr_debug("kfd: In func %s\n", __func__);
 151
 152         memset(buffer, 0, sizeof(struct pm4_map_process));
 153
 154         packet->header.u32all = build_pm4_header(IT_MAP_PROCESS,
 155                                         sizeof(struct pm4_map_process));
 156         packet->bitfields2.diq_enable = (qpd->is_debug) ? 1 : 0;
 157         packet->bitfields2.process_quantum = 1;
 158         packet->bitfields2.pasid = qpd->pqm->process->pasid;
 159         packet->bitfields3.page_table_base = qpd->page_table_base;
 160         packet->bitfields10.gds_size = qpd->gds_size;
 161         packet->bitfields10.num_gws = qpd->num_gws;
 162         packet->bitfields10.num_oac = qpd->num_oac;
 163         num_queues = 0;
 164         list_for_each_entry(cur, &qpd->queues_list, list)
 165                 num_queues++;
 166         packet->bitfields10.num_queues = num_queues;
 167
 168         packet->sh_mem_config = qpd->sh_mem_config;
 169         packet->sh_mem_bases = qpd->sh_mem_bases;
 170         packet->sh_mem_ape1_base = qpd->sh_mem_ape1_base;
 171         packet->sh_mem_ape1_limit = qpd->sh_mem_ape1_limit;
 172
 173         packet->gds_addr_lo = lower_32_bits(qpd->gds_context_area);
 174         packet->gds_addr_hi = upper_32_bits(qpd->gds_context_area);
 175
 176         return 0;
 177 }
 178
 179 static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer,
 180                                 struct queue *q)
 181 {
 182         struct pm4_map_queues *packet;
 183
 184         BUG_ON(!pm || !buffer || !q);
 185
 186         pr_debug("kfd: In func %s\n", __func__);
 187
 188         packet = (struct pm4_map_queues *)buffer;
 189         memset(buffer, 0, sizeof(struct pm4_map_queues));
 190
 191         packet->header.u32all = build_pm4_header(IT_MAP_QUEUES,
 192                                                 sizeof(struct pm4_map_queues));
 193         packet->bitfields2.alloc_format =
 194                                 alloc_format__mes_map_queues__one_per_pipe;
 195         packet->bitfields2.num_queues = 1;
 196         packet->bitfields2.queue_sel =
 197                 queue_sel__mes_map_queues__map_to_hws_determined_queue_slots;
 198
 199         packet->bitfields2.vidmem = (q->properties.is_interop) ?
 200                         vidmem__mes_map_queues__uses_video_memory :
 201                         vidmem__mes_map_queues__uses_no_video_memory;
 202
 203         switch (q->properties.type) {
 204         case KFD_QUEUE_TYPE_COMPUTE:
 205         case KFD_QUEUE_TYPE_DIQ:
 206                 packet->bitfields2.engine_sel =
 207                                 engine_sel__mes_map_queues__compute;
 208                 break;
 209         case KFD_QUEUE_TYPE_SDMA:
 210                 packet->bitfields2.engine_sel =
 211                                 engine_sel__mes_map_queues__sdma0;
 212                 break;
 213         default:
 214                 BUG();
 215                 break;
 216         }
 217
 218         packet->mes_map_queues_ordinals[0].bitfields3.doorbell_offset =
 219                         q->properties.doorbell_off;
 220
 221         packet->mes_map_queues_ordinals[0].mqd_addr_lo =
 222                         lower_32_bits(q->gart_mqd_addr);
 223
 224         packet->mes_map_queues_ordinals[0].mqd_addr_hi =
 225                         upper_32_bits(q->gart_mqd_addr);
 226
 227         packet->mes_map_queues_ordinals[0].wptr_addr_lo =
 228                         lower_32_bits((uint64_t)q->properties.write_ptr);
 229
 230         packet->mes_map_queues_ordinals[0].wptr_addr_hi =
 231                         upper_32_bits((uint64_t)q->properties.write_ptr);
 232
 233         return 0;
 234 }
 235
 236 static int pm_create_runlist_ib(struct packet_manager *pm,
 237                                 struct list_head *queues,
 238                                 uint64_t *rl_gpu_addr,
 239                                 size_t *rl_size_bytes)
 240 {
 241         unsigned int alloc_size_bytes;
 242         unsigned int *rl_buffer, rl_wptr, i;
 243         int retval, proccesses_mapped;
 244         struct device_process_node *cur;
 245         struct qcm_process_device *qpd;
 246         struct queue *q;
 247         struct kernel_queue *kq;
 248         bool is_over_subscription;
 249
 250         BUG_ON(!pm || !queues || !rl_size_bytes || !rl_gpu_addr);
 251
 252         rl_wptr = retval = proccesses_mapped = 0;
 253
 254         retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
 255                                 &alloc_size_bytes, &is_over_subscription);
 256         if (retval != 0)
 257                 return retval;
 258
 259         *rl_size_bytes = alloc_size_bytes;
 260
 261         pr_debug("kfd: In func %s\n", __func__);
 262         pr_debug("kfd: building runlist ib process count: %d queues count %d\n",
 263                 pm->dqm->processes_count, pm->dqm->queue_count);
 264
 265         /* build the run list ib packet */
 266         list_for_each_entry(cur, queues, list) {
 267                 qpd = cur->qpd;
 268                 /* build map process packet */
 269                 if (proccesses_mapped >= pm->dqm->processes_count) {
 270                         pr_debug("kfd: not enough space left in runlist IB\n");
 271                         pm_release_ib(pm);
 272                         return -ENOMEM;
 273                 }
 274                 retval = pm_create_map_process(pm, &rl_buffer[rl_wptr], qpd);
 275                 if (retval != 0)
 276                         return retval;
 277                 proccesses_mapped++;
 278                 inc_wptr(&rl_wptr, sizeof(struct pm4_map_process),
 279                                 alloc_size_bytes);
 280
 281                 list_for_each_entry(kq, &qpd->priv_queue_list, list) {
 282                         if (kq->queue->properties.is_active != true)
 283                                 continue;
 284                         retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr],
 285                                                         kq->queue);
 286                         if (retval != 0)
 287                                 return retval;
 288                         inc_wptr(&rl_wptr, sizeof(struct pm4_map_queues),
 289                                         alloc_size_bytes);
 290                 }
 291
 292                 list_for_each_entry(q, &qpd->queues_list, list) {
 293                         if (q->properties.is_active != true)
 294                                 continue;
 295                         retval = pm_create_map_queue(pm,
 296                                                 &rl_buffer[rl_wptr], q);
 297                         if (retval != 0)
 298                                 return retval;
 299                         inc_wptr(&rl_wptr, sizeof(struct pm4_map_queues),
 300                                         alloc_size_bytes);
 301                 }
 302         }
 303
 304         pr_debug("kfd: finished map process and queues to runlist\n");
 305
 306         if (is_over_subscription)
 307                 pm_create_runlist(pm, &rl_buffer[rl_wptr], *rl_gpu_addr,
 308                                 alloc_size_bytes / sizeof(uint32_t), true);
 309
 310         for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
 311                 pr_debug("0x%2X ", rl_buffer[i]);
 312         pr_debug("\n");
 313
 314         return 0;
 315 }
 316
 317 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
 318 {
 319         BUG_ON(!dqm);
 320
 321         pm->dqm = dqm;
 322         mutex_init(&pm->lock);
 323         pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
 324         if (pm->priv_queue == NULL) {
 325                 mutex_destroy(&pm->lock);
 326                 return -ENOMEM;
 327         }
 328         pm->allocated = false;
 329
 330         return 0;
 331 }
 332
 333 void pm_uninit(struct packet_manager *pm)
 334 {
 335         BUG_ON(!pm);
 336
 337         mutex_destroy(&pm->lock);
 338         kernel_queue_uninit(pm->priv_queue);
 339 }
 340
 341 int pm_send_set_resources(struct packet_manager *pm,
 342                                 struct scheduling_resources *res)
 343 {
 344         struct pm4_set_resources *packet;
 345
 346         BUG_ON(!pm || !res);
 347
 348         pr_debug("kfd: In func %s\n", __func__);
 349
 350         mutex_lock(&pm->lock);
 351         pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
 352                                         sizeof(*packet) / sizeof(uint32_t),
 353                         (unsigned int **)&packet);
 354         if (packet == NULL) {
 355                 mutex_unlock(&pm->lock);
 356                 pr_err("kfd: failed to allocate buffer on kernel queue\n");
 357                 return -ENOMEM;
 358         }
 359
 360         memset(packet, 0, sizeof(struct pm4_set_resources));
 361         packet->header.u32all = build_pm4_header(IT_SET_RESOURCES,
 362                                         sizeof(struct pm4_set_resources));
 363
 364         packet->bitfields2.queue_type =
 365                         queue_type__mes_set_resources__hsa_interface_queue_hiq;
 366         packet->bitfields2.vmid_mask = res->vmid_mask;
 367         packet->bitfields2.unmap_latency = KFD_UNMAP_LATENCY;
 368         packet->bitfields7.oac_mask = res->oac_mask;
 369         packet->bitfields8.gds_heap_base = res->gds_heap_base;
 370         packet->bitfields8.gds_heap_size = res->gds_heap_size;
 371
 372         packet->gws_mask_lo = lower_32_bits(res->gws_mask);
 373         packet->gws_mask_hi = upper_32_bits(res->gws_mask);
 374
 375         packet->queue_mask_lo = lower_32_bits(res->queue_mask);
 376         packet->queue_mask_hi = upper_32_bits(res->queue_mask);
 377
 378         pm->priv_queue->ops.submit_packet(pm->priv_queue);
 379
 380         mutex_unlock(&pm->lock);
 381
 382         return 0;
 383 }
 384
 385 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
 386 {
 387         uint64_t rl_gpu_ib_addr;
 388         uint32_t *rl_buffer;
 389         size_t rl_ib_size, packet_size_dwords;
 390         int retval;
 391
 392         BUG_ON(!pm || !dqm_queues);
 393
 394         retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
 395                                         &rl_ib_size);
 396         if (retval != 0)
 397                 goto fail_create_runlist_ib;
 398
 399         pr_debug("kfd: runlist IB address: 0x%llX\n", rl_gpu_ib_addr);
 400
 401         packet_size_dwords = sizeof(struct pm4_runlist) / sizeof(uint32_t);
 402         mutex_lock(&pm->lock);
 403
 404         retval = pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
 405                                         packet_size_dwords, &rl_buffer);
 406         if (retval != 0)
 407                 goto fail_acquire_packet_buffer;
 408
 409         retval = pm_create_runlist(pm, rl_buffer, rl_gpu_ib_addr,
 410                                         rl_ib_size / sizeof(uint32_t), false);
 411         if (retval != 0)
 412                 goto fail_create_runlist;
 413
 414         pm->priv_queue->ops.submit_packet(pm->priv_queue);
 415
 416         mutex_unlock(&pm->lock);
 417
 418         return retval;
 419
 420 fail_create_runlist:
 421         pm->priv_queue->ops.rollback_packet(pm->priv_queue);
 422 fail_acquire_packet_buffer:
 423         mutex_unlock(&pm->lock);
 424 fail_create_runlist_ib:
 425         if (pm->allocated == true)
 426                 pm_release_ib(pm);
 427         return retval;
 428 }
 429
 430 int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
 431                         uint32_t fence_value)
 432 {
 433         int retval;
 434         struct pm4_query_status *packet;
 435
 436         BUG_ON(!pm || !fence_address);
 437
 438         mutex_lock(&pm->lock);
 439         retval = pm->priv_queue->ops.acquire_packet_buffer(
 440                         pm->priv_queue,
 441                         sizeof(struct pm4_query_status) / sizeof(uint32_t),
 442                         (unsigned int **)&packet);
 443         if (retval != 0)
 444                 goto fail_acquire_packet_buffer;
 445
 446         packet->header.u32all = build_pm4_header(IT_QUERY_STATUS,
 447                                         sizeof(struct pm4_query_status));
 448
 449         packet->bitfields2.context_id = 0;
 450         packet->bitfields2.interrupt_sel =
 451                         interrupt_sel__mes_query_status__completion_status;
 452         packet->bitfields2.command =
 453                         command__mes_query_status__fence_only_after_write_ack;
 454
 455         packet->addr_hi = upper_32_bits((uint64_t)fence_address);
 456         packet->addr_lo = lower_32_bits((uint64_t)fence_address);
 457         packet->data_hi = upper_32_bits((uint64_t)fence_value);
 458         packet->data_lo = lower_32_bits((uint64_t)fence_value);
 459
 460         pm->priv_queue->ops.submit_packet(pm->priv_queue);
 461         mutex_unlock(&pm->lock);
 462
 463         return 0;
 464
 465 fail_acquire_packet_buffer:
 466         mutex_unlock(&pm->lock);
 467         return retval;
 468 }
 469
 470 int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
 471                         enum kfd_preempt_type_filter mode,
 472                         uint32_t filter_param, bool reset,
 473                         unsigned int sdma_engine)
 474 {
 475         int retval;
 476         uint32_t *buffer;
 477         struct pm4_unmap_queues *packet;
 478
 479         BUG_ON(!pm);
 480
 481         mutex_lock(&pm->lock);
 482         retval = pm->priv_queue->ops.acquire_packet_buffer(
 483                         pm->priv_queue,
 484                         sizeof(struct pm4_unmap_queues) / sizeof(uint32_t),
 485                         &buffer);
 486         if (retval != 0)
 487                 goto err_acquire_packet_buffer;
 488
 489         packet = (struct pm4_unmap_queues *)buffer;
 490         memset(buffer, 0, sizeof(struct pm4_unmap_queues));
 491
 492         packet->header.u32all = build_pm4_header(IT_UNMAP_QUEUES,
 493                                         sizeof(struct pm4_unmap_queues));
 494         switch (type) {
 495         case KFD_QUEUE_TYPE_COMPUTE:
 496         case KFD_QUEUE_TYPE_DIQ:
 497                 packet->bitfields2.engine_sel =
 498                         engine_sel__mes_unmap_queues__compute;
 499                 break;
 500         case KFD_QUEUE_TYPE_SDMA:
 501                 packet->bitfields2.engine_sel =
 502                         engine_sel__mes_unmap_queues__sdma0 + sdma_engine;
 503                 break;
 504         default:
 505                 BUG();
 506                 break;
 507         }
 508
 509         if (reset)
 510                 packet->bitfields2.action =
 511                                 action__mes_unmap_queues__reset_queues;
 512         else
 513                 packet->bitfields2.action =
 514                                 action__mes_unmap_queues__preempt_queues;
 515
 516         switch (mode) {
 517         case KFD_PREEMPT_TYPE_FILTER_SINGLE_QUEUE:
 518                 packet->bitfields2.queue_sel =
 519                                 queue_sel__mes_unmap_queues__perform_request_on_specified_queues;
 520                 packet->bitfields2.num_queues = 1;
 521                 packet->bitfields3b.doorbell_offset0 = filter_param;
 522                 break;
 523         case KFD_PREEMPT_TYPE_FILTER_BY_PASID:
 524                 packet->bitfields2.queue_sel =
 525                                 queue_sel__mes_unmap_queues__perform_request_on_pasid_queues;
 526                 packet->bitfields3a.pasid = filter_param;
 527                 break;
 528         case KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES:
 529                 packet->bitfields2.queue_sel =
 530                                 queue_sel__mes_unmap_queues__perform_request_on_all_active_queues;
 531                 break;
 532         default:
 533                 BUG();
 534                 break;
 535         };
 536
 537         pm->priv_queue->ops.submit_packet(pm->priv_queue);
 538
 539         mutex_unlock(&pm->lock);
 540         return 0;
 541
 542 err_acquire_packet_buffer:
 543         mutex_unlock(&pm->lock);
 544         return retval;
 545 }
 546
 547 void pm_release_ib(struct packet_manager *pm)
 548 {
 549         BUG_ON(!pm);
 550
 551         mutex_lock(&pm->lock);
 552         if (pm->allocated) {
 553                 kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);
 554                 pm->allocated = false;
 555         }
 556         mutex_unlock(&pm->lock);
 557 }