drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c

   1 /*
   2  * Copyright 2015 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  * Authors: monk liu <monk.liu@amd.com>
  23  */
  24
  25 #include <drm/drm_auth.h>
  26 #include "amdgpu.h"
  27 #include "amdgpu_sched.h"
  28 #include "amdgpu_ras.h"
  29
  30 #define to_amdgpu_ctx_entity(e) \
  31         container_of((e), struct amdgpu_ctx_entity, entity)
  32
  33 const unsigned int amdgpu_ctx_num_entities[AMDGPU_HW_IP_NUM] = {
  34         [AMDGPU_HW_IP_GFX]      =       1,
  35         [AMDGPU_HW_IP_COMPUTE]  =       4,
  36         [AMDGPU_HW_IP_DMA]      =       2,
  37         [AMDGPU_HW_IP_UVD]      =       1,
  38         [AMDGPU_HW_IP_VCE]      =       1,
  39         [AMDGPU_HW_IP_UVD_ENC]  =       1,
  40         [AMDGPU_HW_IP_VCN_DEC]  =       1,
  41         [AMDGPU_HW_IP_VCN_ENC]  =       1,
  42         [AMDGPU_HW_IP_VCN_JPEG] =       1,
  43 };
  44
  45 static int amdgput_ctx_total_num_entities(void)
  46 {
  47         unsigned i, num_entities = 0;
  48
  49         for (i = 0; i < AMDGPU_HW_IP_NUM; ++i)
  50                 num_entities += amdgpu_ctx_num_entities[i];
  51
  52         return num_entities;
  53 }
  54
  55 static int amdgpu_ctx_priority_permit(struct drm_file *filp,
  56                                       enum drm_sched_priority priority)
  57 {
  58         /* NORMAL and below are accessible by everyone */
  59         if (priority <= DRM_SCHED_PRIORITY_NORMAL)
  60                 return 0;
  61
  62         if (capable(CAP_SYS_NICE))
  63                 return 0;
  64
  65         if (drm_is_current_master(filp))
  66                 return 0;
  67
  68         return -EACCES;
  69 }
  70
  71 static int amdgpu_ctx_init(struct amdgpu_device *adev,
  72                            enum drm_sched_priority priority,
  73                            struct drm_file *filp,
  74                            struct amdgpu_ctx *ctx)
  75 {
  76         unsigned num_entities = amdgput_ctx_total_num_entities();
  77         unsigned i, j, k;
  78         int r;
  79
  80         if (priority < 0 || priority >= DRM_SCHED_PRIORITY_MAX)
  81                 return -EINVAL;
  82
  83         r = amdgpu_ctx_priority_permit(filp, priority);
  84         if (r)
  85                 return r;
  86
  87         memset(ctx, 0, sizeof(*ctx));
  88         ctx->adev = adev;
  89
  90         ctx->fences = kcalloc(amdgpu_sched_jobs * num_entities,
  91                               sizeof(struct dma_fence*), GFP_KERNEL);
  92         if (!ctx->fences)
  93                 return -ENOMEM;
  94
  95         ctx->entities[0] = kcalloc(num_entities,
  96                                    sizeof(struct amdgpu_ctx_entity),
  97                                    GFP_KERNEL);
  98         if (!ctx->entities[0]) {
  99                 r = -ENOMEM;
 100                 goto error_free_fences;
 101         }
 102
 103         for (i = 0; i < num_entities; ++i) {
 104                 struct amdgpu_ctx_entity *entity = &ctx->entities[0][i];
 105
 106                 entity->sequence = 1;
 107                 entity->fences = &ctx->fences[amdgpu_sched_jobs * i];
 108         }
 109         for (i = 1; i < AMDGPU_HW_IP_NUM; ++i)
 110                 ctx->entities[i] = ctx->entities[i - 1] +
 111                         amdgpu_ctx_num_entities[i - 1];
 112
 113         kref_init(&ctx->refcount);
 114         spin_lock_init(&ctx->ring_lock);
 115         mutex_init(&ctx->lock);
 116
 117         ctx->reset_counter = atomic_read(&adev->gpu_reset_counter);
 118         ctx->reset_counter_query = ctx->reset_counter;
 119         ctx->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
 120         ctx->init_priority = priority;
 121         ctx->override_priority = DRM_SCHED_PRIORITY_UNSET;
 122
 123         for (i = 0; i < AMDGPU_HW_IP_NUM; ++i) {
 124                 struct amdgpu_ring *rings[AMDGPU_MAX_RINGS];
 125                 struct drm_sched_rq *rqs[AMDGPU_MAX_RINGS];
 126                 unsigned num_rings = 0;
 127                 unsigned num_rqs = 0;
 128
 129                 switch (i) {
 130                 case AMDGPU_HW_IP_GFX:
 131                         rings[0] = &adev->gfx.gfx_ring[0];
 132                         num_rings = 1;
 133                         break;
 134                 case AMDGPU_HW_IP_COMPUTE:
 135                         for (j = 0; j < adev->gfx.num_compute_rings; ++j)
 136                                 rings[j] = &adev->gfx.compute_ring[j];
 137                         num_rings = adev->gfx.num_compute_rings;
 138                         break;
 139                 case AMDGPU_HW_IP_DMA:
 140                         for (j = 0; j < adev->sdma.num_instances; ++j)
 141                                 rings[j] = &adev->sdma.instance[j].ring;
 142                         num_rings = adev->sdma.num_instances;
 143                         break;
 144                 case AMDGPU_HW_IP_UVD:
 145                         rings[0] = &adev->uvd.inst[0].ring;
 146                         num_rings = 1;
 147                         break;
 148                 case AMDGPU_HW_IP_VCE:
 149                         rings[0] = &adev->vce.ring[0];
 150                         num_rings = 1;
 151                         break;
 152                 case AMDGPU_HW_IP_UVD_ENC:
 153                         rings[0] = &adev->uvd.inst[0].ring_enc[0];
 154                         num_rings = 1;
 155                         break;
 156                 case AMDGPU_HW_IP_VCN_DEC:
 157                         for (j = 0; j < adev->vcn.num_vcn_inst; ++j) {
 158                                 if (adev->vcn.harvest_config & (1 << j))
 159                                         continue;
 160                                 rings[num_rings++] = &adev->vcn.inst[j].ring_dec;
 161                         }
 162                         break;
 163                 case AMDGPU_HW_IP_VCN_ENC:
 164                         for (j = 0; j < adev->vcn.num_vcn_inst; ++j) {
 165                                 if (adev->vcn.harvest_config & (1 << j))
 166                                         continue;
 167                                 for (k = 0; k < adev->vcn.num_enc_rings; ++k)
 168                                         rings[num_rings++] = &adev->vcn.inst[j].ring_enc[k];
 169                         }
 170                         break;
 171                 case AMDGPU_HW_IP_VCN_JPEG:
 172                         for (j = 0; j < adev->vcn.num_vcn_inst; ++j) {
 173                                 if (adev->vcn.harvest_config & (1 << j))
 174                                         continue;
 175                                 rings[num_rings++] = &adev->vcn.inst[j].ring_jpeg;
 176                         }
 177                         break;
 178                 }
 179
 180                 for (j = 0; j < num_rings; ++j) {
 181                         if (!rings[j]->adev)
 182                                 continue;
 183
 184                         rqs[num_rqs++] = &rings[j]->sched.sched_rq[priority];
 185                 }
 186
 187                 for (j = 0; j < amdgpu_ctx_num_entities[i]; ++j)
 188                         r = drm_sched_entity_init(&ctx->entities[i][j].entity,
 189                                                   rqs, num_rqs, &ctx->guilty);
 190                 if (r)
 191                         goto error_cleanup_entities;
 192         }
 193
 194         return 0;
 195
 196 error_cleanup_entities:
 197         for (i = 0; i < num_entities; ++i)
 198                 drm_sched_entity_destroy(&ctx->entities[0][i].entity);
 199         kfree(ctx->entities[0]);
 200
 201 error_free_fences:
 202         kfree(ctx->fences);
 203         ctx->fences = NULL;
 204         return r;
 205 }
 206
 207 static void amdgpu_ctx_fini(struct kref *ref)
 208 {
 209         struct amdgpu_ctx *ctx = container_of(ref, struct amdgpu_ctx, refcount);
 210         unsigned num_entities = amdgput_ctx_total_num_entities();
 211         struct amdgpu_device *adev = ctx->adev;
 212         unsigned i, j;
 213
 214         if (!adev)
 215                 return;
 216
 217         for (i = 0; i < num_entities; ++i)
 218                 for (j = 0; j < amdgpu_sched_jobs; ++j)
 219                         dma_fence_put(ctx->entities[0][i].fences[j]);
 220         kfree(ctx->fences);
 221         kfree(ctx->entities[0]);
 222
 223         mutex_destroy(&ctx->lock);
 224
 225         kfree(ctx);
 226 }
 227
 228 int amdgpu_ctx_get_entity(struct amdgpu_ctx *ctx, u32 hw_ip, u32 instance,
 229                           u32 ring, struct drm_sched_entity **entity)
 230 {
 231         if (hw_ip >= AMDGPU_HW_IP_NUM) {
 232                 DRM_ERROR("unknown HW IP type: %d\n", hw_ip);
 233                 return -EINVAL;
 234         }
 235
 236         /* Right now all IPs have only one instance - multiple rings. */
 237         if (instance != 0) {
 238                 DRM_DEBUG("invalid ip instance: %d\n", instance);
 239                 return -EINVAL;
 240         }
 241
 242         if (ring >= amdgpu_ctx_num_entities[hw_ip]) {
 243                 DRM_DEBUG("invalid ring: %d %d\n", hw_ip, ring);
 244                 return -EINVAL;
 245         }
 246
 247         *entity = &ctx->entities[hw_ip][ring].entity;
 248         return 0;
 249 }
 250
 251 static int amdgpu_ctx_alloc(struct amdgpu_device *adev,
 252                             struct amdgpu_fpriv *fpriv,
 253                             struct drm_file *filp,
 254                             enum drm_sched_priority priority,
 255                             uint32_t *id)
 256 {
 257         struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr;
 258         struct amdgpu_ctx *ctx;
 259         int r;
 260
 261         ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
 262         if (!ctx)
 263                 return -ENOMEM;
 264
 265         mutex_lock(&mgr->lock);
 266         r = idr_alloc(&mgr->ctx_handles, ctx, 1, AMDGPU_VM_MAX_NUM_CTX, GFP_KERNEL);
 267         if (r < 0) {
 268                 mutex_unlock(&mgr->lock);
 269                 kfree(ctx);
 270                 return r;
 271         }
 272
 273         *id = (uint32_t)r;
 274         r = amdgpu_ctx_init(adev, priority, filp, ctx);
 275         if (r) {
 276                 idr_remove(&mgr->ctx_handles, *id);
 277                 *id = 0;
 278                 kfree(ctx);
 279         }
 280         mutex_unlock(&mgr->lock);
 281         return r;
 282 }
 283
 284 static void amdgpu_ctx_do_release(struct kref *ref)
 285 {
 286         struct amdgpu_ctx *ctx;
 287         unsigned num_entities;
 288         u32 i;
 289
 290         ctx = container_of(ref, struct amdgpu_ctx, refcount);
 291
 292         num_entities = 0;
 293         for (i = 0; i < AMDGPU_HW_IP_NUM; i++)
 294                 num_entities += amdgpu_ctx_num_entities[i];
 295
 296         for (i = 0; i < num_entities; i++)
 297                 drm_sched_entity_destroy(&ctx->entities[0][i].entity);
 298
 299         amdgpu_ctx_fini(ref);
 300 }
 301
 302 static int amdgpu_ctx_free(struct amdgpu_fpriv *fpriv, uint32_t id)
 303 {
 304         struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr;
 305         struct amdgpu_ctx *ctx;
 306
 307         mutex_lock(&mgr->lock);
 308         ctx = idr_remove(&mgr->ctx_handles, id);
 309         if (ctx)
 310                 kref_put(&ctx->refcount, amdgpu_ctx_do_release);
 311         mutex_unlock(&mgr->lock);
 312         return ctx ? 0 : -EINVAL;
 313 }
 314
 315 static int amdgpu_ctx_query(struct amdgpu_device *adev,
 316                             struct amdgpu_fpriv *fpriv, uint32_t id,
 317                             union drm_amdgpu_ctx_out *out)
 318 {
 319         struct amdgpu_ctx *ctx;
 320         struct amdgpu_ctx_mgr *mgr;
 321         unsigned reset_counter;
 322
 323         if (!fpriv)
 324                 return -EINVAL;
 325
 326         mgr = &fpriv->ctx_mgr;
 327         mutex_lock(&mgr->lock);
 328         ctx = idr_find(&mgr->ctx_handles, id);
 329         if (!ctx) {
 330                 mutex_unlock(&mgr->lock);
 331                 return -EINVAL;
 332         }
 333
 334         /* TODO: these two are always zero */
 335         out->state.flags = 0x0;
 336         out->state.hangs = 0x0;
 337
 338         /* determine if a GPU reset has occured since the last call */
 339         reset_counter = atomic_read(&adev->gpu_reset_counter);
 340         /* TODO: this should ideally return NO, GUILTY, or INNOCENT. */
 341         if (ctx->reset_counter_query == reset_counter)
 342                 out->state.reset_status = AMDGPU_CTX_NO_RESET;
 343         else
 344                 out->state.reset_status = AMDGPU_CTX_UNKNOWN_RESET;
 345         ctx->reset_counter_query = reset_counter;
 346
 347         mutex_unlock(&mgr->lock);
 348         return 0;
 349 }
 350
 351 static int amdgpu_ctx_query2(struct amdgpu_device *adev,
 352         struct amdgpu_fpriv *fpriv, uint32_t id,
 353         union drm_amdgpu_ctx_out *out)
 354 {
 355         struct amdgpu_ctx *ctx;
 356         struct amdgpu_ctx_mgr *mgr;
 357         uint32_t ras_counter;
 358
 359         if (!fpriv)
 360                 return -EINVAL;
 361
 362         mgr = &fpriv->ctx_mgr;
 363         mutex_lock(&mgr->lock);
 364         ctx = idr_find(&mgr->ctx_handles, id);
 365         if (!ctx) {
 366                 mutex_unlock(&mgr->lock);
 367                 return -EINVAL;
 368         }
 369
 370         out->state.flags = 0x0;
 371         out->state.hangs = 0x0;
 372
 373         if (ctx->reset_counter != atomic_read(&adev->gpu_reset_counter))
 374                 out->state.flags |= AMDGPU_CTX_QUERY2_FLAGS_RESET;
 375
 376         if (ctx->vram_lost_counter != atomic_read(&adev->vram_lost_counter))
 377                 out->state.flags |= AMDGPU_CTX_QUERY2_FLAGS_VRAMLOST;
 378
 379         if (atomic_read(&ctx->guilty))
 380                 out->state.flags |= AMDGPU_CTX_QUERY2_FLAGS_GUILTY;
 381
 382         /*query ue count*/
 383         ras_counter = amdgpu_ras_query_error_count(adev, false);
 384         /*ras counter is monotonic increasing*/
 385         if (ras_counter != ctx->ras_counter_ue) {
 386                 out->state.flags |= AMDGPU_CTX_QUERY2_FLAGS_RAS_UE;
 387                 ctx->ras_counter_ue = ras_counter;
 388         }
 389
 390         /*query ce count*/
 391         ras_counter = amdgpu_ras_query_error_count(adev, true);
 392         if (ras_counter != ctx->ras_counter_ce) {
 393                 out->state.flags |= AMDGPU_CTX_QUERY2_FLAGS_RAS_CE;
 394                 ctx->ras_counter_ce = ras_counter;
 395         }
 396
 397         mutex_unlock(&mgr->lock);
 398         return 0;
 399 }
 400
 401 int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
 402                      struct drm_file *filp)
 403 {
 404         int r;
 405         uint32_t id;
 406         enum drm_sched_priority priority;
 407
 408         union drm_amdgpu_ctx *args = data;
 409         struct amdgpu_device *adev = dev->dev_private;
 410         struct amdgpu_fpriv *fpriv = filp->driver_priv;
 411
 412         r = 0;
 413         id = args->in.ctx_id;
 414         priority = amdgpu_to_sched_priority(args->in.priority);
 415
 416         /* For backwards compatibility reasons, we need to accept
 417          * ioctls with garbage in the priority field */
 418         if (priority == DRM_SCHED_PRIORITY_INVALID)
 419                 priority = DRM_SCHED_PRIORITY_NORMAL;
 420
 421         switch (args->in.op) {
 422         case AMDGPU_CTX_OP_ALLOC_CTX:
 423                 r = amdgpu_ctx_alloc(adev, fpriv, filp, priority, &id);
 424                 args->out.alloc.ctx_id = id;
 425                 break;
 426         case AMDGPU_CTX_OP_FREE_CTX:
 427                 r = amdgpu_ctx_free(fpriv, id);
 428                 break;
 429         case AMDGPU_CTX_OP_QUERY_STATE:
 430                 r = amdgpu_ctx_query(adev, fpriv, id, &args->out);
 431                 break;
 432         case AMDGPU_CTX_OP_QUERY_STATE2:
 433                 r = amdgpu_ctx_query2(adev, fpriv, id, &args->out);
 434                 break;
 435         default:
 436                 return -EINVAL;
 437         }
 438
 439         return r;
 440 }
 441
 442 struct amdgpu_ctx *amdgpu_ctx_get(struct amdgpu_fpriv *fpriv, uint32_t id)
 443 {
 444         struct amdgpu_ctx *ctx;
 445         struct amdgpu_ctx_mgr *mgr;
 446
 447         if (!fpriv)
 448                 return NULL;
 449
 450         mgr = &fpriv->ctx_mgr;
 451
 452         mutex_lock(&mgr->lock);
 453         ctx = idr_find(&mgr->ctx_handles, id);
 454         if (ctx)
 455                 kref_get(&ctx->refcount);
 456         mutex_unlock(&mgr->lock);
 457         return ctx;
 458 }
 459
 460 int amdgpu_ctx_put(struct amdgpu_ctx *ctx)
 461 {
 462         if (ctx == NULL)
 463                 return -EINVAL;
 464
 465         kref_put(&ctx->refcount, amdgpu_ctx_do_release);
 466         return 0;
 467 }
 468
 469 void amdgpu_ctx_add_fence(struct amdgpu_ctx *ctx,
 470                           struct drm_sched_entity *entity,
 471                           struct dma_fence *fence, uint64_t* handle)
 472 {
 473         struct amdgpu_ctx_entity *centity = to_amdgpu_ctx_entity(entity);
 474         uint64_t seq = centity->sequence;
 475         struct dma_fence *other = NULL;
 476         unsigned idx = 0;
 477
 478         idx = seq & (amdgpu_sched_jobs - 1);
 479         other = centity->fences[idx];
 480         if (other)
 481                 BUG_ON(!dma_fence_is_signaled(other));
 482
 483         dma_fence_get(fence);
 484
 485         spin_lock(&ctx->ring_lock);
 486         centity->fences[idx] = fence;
 487         centity->sequence++;
 488         spin_unlock(&ctx->ring_lock);
 489
 490         dma_fence_put(other);
 491         if (handle)
 492                 *handle = seq;
 493 }
 494
 495 struct dma_fence *amdgpu_ctx_get_fence(struct amdgpu_ctx *ctx,
 496                                        struct drm_sched_entity *entity,
 497                                        uint64_t seq)
 498 {
 499         struct amdgpu_ctx_entity *centity = to_amdgpu_ctx_entity(entity);
 500         struct dma_fence *fence;
 501
 502         spin_lock(&ctx->ring_lock);
 503
 504         if (seq == ~0ull)
 505                 seq = centity->sequence - 1;
 506
 507         if (seq >= centity->sequence) {
 508                 spin_unlock(&ctx->ring_lock);
 509                 return ERR_PTR(-EINVAL);
 510         }
 511
 512
 513         if (seq + amdgpu_sched_jobs < centity->sequence) {
 514                 spin_unlock(&ctx->ring_lock);
 515                 return NULL;
 516         }
 517
 518         fence = dma_fence_get(centity->fences[seq & (amdgpu_sched_jobs - 1)]);
 519         spin_unlock(&ctx->ring_lock);
 520
 521         return fence;
 522 }
 523
 524 void amdgpu_ctx_priority_override(struct amdgpu_ctx *ctx,
 525                                   enum drm_sched_priority priority)
 526 {
 527         unsigned num_entities = amdgput_ctx_total_num_entities();
 528         enum drm_sched_priority ctx_prio;
 529         unsigned i;
 530
 531         ctx->override_priority = priority;
 532
 533         ctx_prio = (ctx->override_priority == DRM_SCHED_PRIORITY_UNSET) ?
 534                         ctx->init_priority : ctx->override_priority;
 535
 536         for (i = 0; i < num_entities; i++) {
 537                 struct drm_sched_entity *entity = &ctx->entities[0][i].entity;
 538
 539                 drm_sched_entity_set_priority(entity, ctx_prio);
 540         }
 541 }
 542
 543 int amdgpu_ctx_wait_prev_fence(struct amdgpu_ctx *ctx,
 544                                struct drm_sched_entity *entity)
 545 {
 546         struct amdgpu_ctx_entity *centity = to_amdgpu_ctx_entity(entity);
 547         unsigned idx = centity->sequence & (amdgpu_sched_jobs - 1);
 548         struct dma_fence *other = centity->fences[idx];
 549
 550         if (other) {
 551                 signed long r;
 552                 r = dma_fence_wait(other, true);
 553                 if (r < 0) {
 554                         if (r != -ERESTARTSYS)
 555                                 DRM_ERROR("Error (%ld) waiting for fence!\n", r);
 556
 557                         return r;
 558                 }
 559         }
 560
 561         return 0;
 562 }
 563
 564 void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr)
 565 {
 566         mutex_init(&mgr->lock);
 567         idr_init(&mgr->ctx_handles);
 568 }
 569
 570 long amdgpu_ctx_mgr_entity_flush(struct amdgpu_ctx_mgr *mgr, long timeout)
 571 {
 572         unsigned num_entities = amdgput_ctx_total_num_entities();
 573         struct amdgpu_ctx *ctx;
 574         struct idr *idp;
 575         uint32_t id, i;
 576
 577         idp = &mgr->ctx_handles;
 578
 579         mutex_lock(&mgr->lock);
 580         idr_for_each_entry(idp, ctx, id) {
 581                 for (i = 0; i < num_entities; i++) {
 582                         struct drm_sched_entity *entity;
 583
 584                         entity = &ctx->entities[0][i].entity;
 585                         timeout = drm_sched_entity_flush(entity, timeout);
 586                 }
 587         }
 588         mutex_unlock(&mgr->lock);
 589         return timeout;
 590 }
 591
 592 void amdgpu_ctx_mgr_entity_fini(struct amdgpu_ctx_mgr *mgr)
 593 {
 594         unsigned num_entities = amdgput_ctx_total_num_entities();
 595         struct amdgpu_ctx *ctx;
 596         struct idr *idp;
 597         uint32_t id, i;
 598
 599         idp = &mgr->ctx_handles;
 600
 601         idr_for_each_entry(idp, ctx, id) {
 602                 if (kref_read(&ctx->refcount) != 1) {
 603                         DRM_ERROR("ctx %p is still alive\n", ctx);
 604                         continue;
 605                 }
 606
 607                 for (i = 0; i < num_entities; i++)
 608                         drm_sched_entity_fini(&ctx->entities[0][i].entity);
 609         }
 610 }
 611
 612 void amdgpu_ctx_mgr_fini(struct amdgpu_ctx_mgr *mgr)
 613 {
 614         struct amdgpu_ctx *ctx;
 615         struct idr *idp;
 616         uint32_t id;
 617
 618         amdgpu_ctx_mgr_entity_fini(mgr);
 619
 620         idp = &mgr->ctx_handles;
 621
 622         idr_for_each_entry(idp, ctx, id) {
 623                 if (kref_put(&ctx->refcount, amdgpu_ctx_fini) != 1)
 624                         DRM_ERROR("ctx %p is still alive\n", ctx);
 625         }
 626
 627         idr_destroy(&mgr->ctx_handles);
 628         mutex_destroy(&mgr->lock);
 629 }