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

   1 /*
   2  * Copyright 2008 Jerome Glisse.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Jerome Glisse <[email protected]>
  26  */
  27
  28 #include <linux/file.h>
  29 #include <linux/pagemap.h>
  30 #include <linux/sync_file.h>
  31 #include <linux/dma-buf.h>
  32
  33 #include <drm/amdgpu_drm.h>
  34 #include <drm/drm_syncobj.h>
  35 #include "amdgpu.h"
  36 #include "amdgpu_trace.h"
  37 #include "amdgpu_gmc.h"
  38 #include "amdgpu_gem.h"
  39 #include "amdgpu_ras.h"
  40
  41 static int amdgpu_cs_user_fence_chunk(struct amdgpu_cs_parser *p,
  42                                       struct drm_amdgpu_cs_chunk_fence *data,
  43                                       uint32_t *offset)
  44 {
  45         struct drm_gem_object *gobj;
  46         struct amdgpu_bo *bo;
  47         unsigned long size;
  48         int r;
  49
  50         gobj = drm_gem_object_lookup(p->filp, data->handle);
  51         if (gobj == NULL)
  52                 return -EINVAL;
  53
  54         bo = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
  55         p->uf_entry.priority = 0;
  56         p->uf_entry.tv.bo = &bo->tbo;
  57         /* One for TTM and one for the CS job */
  58         p->uf_entry.tv.num_shared = 2;
  59
  60         drm_gem_object_put(gobj);
  61
  62         size = amdgpu_bo_size(bo);
  63         if (size != PAGE_SIZE || (data->offset + 8) > size) {
  64                 r = -EINVAL;
  65                 goto error_unref;
  66         }
  67
  68         if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm)) {
  69                 r = -EINVAL;
  70                 goto error_unref;
  71         }
  72
  73         *offset = data->offset;
  74
  75         return 0;
  76
  77 error_unref:
  78         amdgpu_bo_unref(&bo);
  79         return r;
  80 }
  81
  82 static int amdgpu_cs_bo_handles_chunk(struct amdgpu_cs_parser *p,
  83                                       struct drm_amdgpu_bo_list_in *data)
  84 {
  85         int r;
  86         struct drm_amdgpu_bo_list_entry *info = NULL;
  87
  88         r = amdgpu_bo_create_list_entry_array(data, &info);
  89         if (r)
  90                 return r;
  91
  92         r = amdgpu_bo_list_create(p->adev, p->filp, info, data->bo_number,
  93                                   &p->bo_list);
  94         if (r)
  95                 goto error_free;
  96
  97         kvfree(info);
  98         return 0;
  99
 100 error_free:
 101         if (info)
 102                 kvfree(info);
 103
 104         return r;
 105 }
 106
 107 static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs *cs)
 108 {
 109         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 110         struct amdgpu_vm *vm = &fpriv->vm;
 111         uint64_t *chunk_array_user;
 112         uint64_t *chunk_array;
 113         unsigned size, num_ibs = 0;
 114         uint32_t uf_offset = 0;
 115         int i;
 116         int ret;
 117
 118         if (cs->in.num_chunks == 0)
 119                 return 0;
 120
 121         chunk_array = kmalloc_array(cs->in.num_chunks, sizeof(uint64_t), GFP_KERNEL);
 122         if (!chunk_array)
 123                 return -ENOMEM;
 124
 125         p->ctx = amdgpu_ctx_get(fpriv, cs->in.ctx_id);
 126         if (!p->ctx) {
 127                 ret = -EINVAL;
 128                 goto free_chunk;
 129         }
 130
 131         mutex_lock(&p->ctx->lock);
 132
 133         /* skip guilty context job */
 134         if (atomic_read(&p->ctx->guilty) == 1) {
 135                 ret = -ECANCELED;
 136                 goto free_chunk;
 137         }
 138
 139         /* get chunks */
 140         chunk_array_user = u64_to_user_ptr(cs->in.chunks);
 141         if (copy_from_user(chunk_array, chunk_array_user,
 142                            sizeof(uint64_t)*cs->in.num_chunks)) {
 143                 ret = -EFAULT;
 144                 goto free_chunk;
 145         }
 146
 147         p->nchunks = cs->in.num_chunks;
 148         p->chunks = kmalloc_array(p->nchunks, sizeof(struct amdgpu_cs_chunk),
 149                             GFP_KERNEL);
 150         if (!p->chunks) {
 151                 ret = -ENOMEM;
 152                 goto free_chunk;
 153         }
 154
 155         for (i = 0; i < p->nchunks; i++) {
 156                 struct drm_amdgpu_cs_chunk __user **chunk_ptr = NULL;
 157                 struct drm_amdgpu_cs_chunk user_chunk;
 158                 uint32_t __user *cdata;
 159
 160                 chunk_ptr = u64_to_user_ptr(chunk_array[i]);
 161                 if (copy_from_user(&user_chunk, chunk_ptr,
 162                                        sizeof(struct drm_amdgpu_cs_chunk))) {
 163                         ret = -EFAULT;
 164                         i--;
 165                         goto free_partial_kdata;
 166                 }
 167                 p->chunks[i].chunk_id = user_chunk.chunk_id;
 168                 p->chunks[i].length_dw = user_chunk.length_dw;
 169
 170                 size = p->chunks[i].length_dw;
 171                 cdata = u64_to_user_ptr(user_chunk.chunk_data);
 172
 173                 p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t), GFP_KERNEL);
 174                 if (p->chunks[i].kdata == NULL) {
 175                         ret = -ENOMEM;
 176                         i--;
 177                         goto free_partial_kdata;
 178                 }
 179                 size *= sizeof(uint32_t);
 180                 if (copy_from_user(p->chunks[i].kdata, cdata, size)) {
 181                         ret = -EFAULT;
 182                         goto free_partial_kdata;
 183                 }
 184
 185                 switch (p->chunks[i].chunk_id) {
 186                 case AMDGPU_CHUNK_ID_IB:
 187                         ++num_ibs;
 188                         break;
 189
 190                 case AMDGPU_CHUNK_ID_FENCE:
 191                         size = sizeof(struct drm_amdgpu_cs_chunk_fence);
 192                         if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
 193                                 ret = -EINVAL;
 194                                 goto free_partial_kdata;
 195                         }
 196
 197                         ret = amdgpu_cs_user_fence_chunk(p, p->chunks[i].kdata,
 198                                                          &uf_offset);
 199                         if (ret)
 200                                 goto free_partial_kdata;
 201
 202                         break;
 203
 204                 case AMDGPU_CHUNK_ID_BO_HANDLES:
 205                         size = sizeof(struct drm_amdgpu_bo_list_in);
 206                         if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
 207                                 ret = -EINVAL;
 208                                 goto free_partial_kdata;
 209                         }
 210
 211                         ret = amdgpu_cs_bo_handles_chunk(p, p->chunks[i].kdata);
 212                         if (ret)
 213                                 goto free_partial_kdata;
 214
 215                         break;
 216
 217                 case AMDGPU_CHUNK_ID_DEPENDENCIES:
 218                 case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
 219                 case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
 220                 case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
 221                 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT:
 222                 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL:
 223                         break;
 224
 225                 default:
 226                         ret = -EINVAL;
 227                         goto free_partial_kdata;
 228                 }
 229         }
 230
 231         ret = amdgpu_job_alloc(p->adev, num_ibs, &p->job, vm);
 232         if (ret)
 233                 goto free_all_kdata;
 234
 235         if (p->ctx->vram_lost_counter != p->job->vram_lost_counter) {
 236                 ret = -ECANCELED;
 237                 goto free_all_kdata;
 238         }
 239
 240         if (p->uf_entry.tv.bo)
 241                 p->job->uf_addr = uf_offset;
 242         kfree(chunk_array);
 243
 244         /* Use this opportunity to fill in task info for the vm */
 245         amdgpu_vm_set_task_info(vm);
 246
 247         return 0;
 248
 249 free_all_kdata:
 250         i = p->nchunks - 1;
 251 free_partial_kdata:
 252         for (; i >= 0; i--)
 253                 kvfree(p->chunks[i].kdata);
 254         kfree(p->chunks);
 255         p->chunks = NULL;
 256         p->nchunks = 0;
 257 free_chunk:
 258         kfree(chunk_array);
 259
 260         return ret;
 261 }
 262
 263 /* Convert microseconds to bytes. */
 264 static u64 us_to_bytes(struct amdgpu_device *adev, s64 us)
 265 {
 266         if (us <= 0 || !adev->mm_stats.log2_max_MBps)
 267                 return 0;
 268
 269         /* Since accum_us is incremented by a million per second, just
 270          * multiply it by the number of MB/s to get the number of bytes.
 271          */
 272         return us << adev->mm_stats.log2_max_MBps;
 273 }
 274
 275 static s64 bytes_to_us(struct amdgpu_device *adev, u64 bytes)
 276 {
 277         if (!adev->mm_stats.log2_max_MBps)
 278                 return 0;
 279
 280         return bytes >> adev->mm_stats.log2_max_MBps;
 281 }
 282
 283 /* Returns how many bytes TTM can move right now. If no bytes can be moved,
 284  * it returns 0. If it returns non-zero, it's OK to move at least one buffer,
 285  * which means it can go over the threshold once. If that happens, the driver
 286  * will be in debt and no other buffer migrations can be done until that debt
 287  * is repaid.
 288  *
 289  * This approach allows moving a buffer of any size (it's important to allow
 290  * that).
 291  *
 292  * The currency is simply time in microseconds and it increases as the clock
 293  * ticks. The accumulated microseconds (us) are converted to bytes and
 294  * returned.
 295  */
 296 static void amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev,
 297                                               u64 *max_bytes,
 298                                               u64 *max_vis_bytes)
 299 {
 300         s64 time_us, increment_us;
 301         u64 free_vram, total_vram, used_vram;
 302
 303         /* Allow a maximum of 200 accumulated ms. This is basically per-IB
 304          * throttling.
 305          *
 306          * It means that in order to get full max MBps, at least 5 IBs per
 307          * second must be submitted and not more than 200ms apart from each
 308          * other.
 309          */
 310         const s64 us_upper_bound = 200000;
 311
 312         if (!adev->mm_stats.log2_max_MBps) {
 313                 *max_bytes = 0;
 314                 *max_vis_bytes = 0;
 315                 return;
 316         }
 317
 318         total_vram = adev->gmc.real_vram_size - atomic64_read(&adev->vram_pin_size);
 319         used_vram = amdgpu_vram_mgr_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
 320         free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram;
 321
 322         spin_lock(&adev->mm_stats.lock);
 323
 324         /* Increase the amount of accumulated us. */
 325         time_us = ktime_to_us(ktime_get());
 326         increment_us = time_us - adev->mm_stats.last_update_us;
 327         adev->mm_stats.last_update_us = time_us;
 328         adev->mm_stats.accum_us = min(adev->mm_stats.accum_us + increment_us,
 329                                       us_upper_bound);
 330
 331         /* This prevents the short period of low performance when the VRAM
 332          * usage is low and the driver is in debt or doesn't have enough
 333          * accumulated us to fill VRAM quickly.
 334          *
 335          * The situation can occur in these cases:
 336          * - a lot of VRAM is freed by userspace
 337          * - the presence of a big buffer causes a lot of evictions
 338          *   (solution: split buffers into smaller ones)
 339          *
 340          * If 128 MB or 1/8th of VRAM is free, start filling it now by setting
 341          * accum_us to a positive number.
 342          */
 343         if (free_vram >= 128 * 1024 * 1024 || free_vram >= total_vram / 8) {
 344                 s64 min_us;
 345
 346                 /* Be more aggresive on dGPUs. Try to fill a portion of free
 347                  * VRAM now.
 348                  */
 349                 if (!(adev->flags & AMD_IS_APU))
 350                         min_us = bytes_to_us(adev, free_vram / 4);
 351                 else
 352                         min_us = 0; /* Reset accum_us on APUs. */
 353
 354                 adev->mm_stats.accum_us = max(min_us, adev->mm_stats.accum_us);
 355         }
 356
 357         /* This is set to 0 if the driver is in debt to disallow (optional)
 358          * buffer moves.
 359          */
 360         *max_bytes = us_to_bytes(adev, adev->mm_stats.accum_us);
 361
 362         /* Do the same for visible VRAM if half of it is free */
 363         if (!amdgpu_gmc_vram_full_visible(&adev->gmc)) {
 364                 u64 total_vis_vram = adev->gmc.visible_vram_size;
 365                 u64 used_vis_vram =
 366                         amdgpu_vram_mgr_vis_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
 367
 368                 if (used_vis_vram < total_vis_vram) {
 369                         u64 free_vis_vram = total_vis_vram - used_vis_vram;
 370                         adev->mm_stats.accum_us_vis = min(adev->mm_stats.accum_us_vis +
 371                                                           increment_us, us_upper_bound);
 372
 373                         if (free_vis_vram >= total_vis_vram / 2)
 374                                 adev->mm_stats.accum_us_vis =
 375                                         max(bytes_to_us(adev, free_vis_vram / 2),
 376                                             adev->mm_stats.accum_us_vis);
 377                 }
 378
 379                 *max_vis_bytes = us_to_bytes(adev, adev->mm_stats.accum_us_vis);
 380         } else {
 381                 *max_vis_bytes = 0;
 382         }
 383
 384         spin_unlock(&adev->mm_stats.lock);
 385 }
 386
 387 /* Report how many bytes have really been moved for the last command
 388  * submission. This can result in a debt that can stop buffer migrations
 389  * temporarily.
 390  */
 391 void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes,
 392                                   u64 num_vis_bytes)
 393 {
 394         spin_lock(&adev->mm_stats.lock);
 395         adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes);
 396         adev->mm_stats.accum_us_vis -= bytes_to_us(adev, num_vis_bytes);
 397         spin_unlock(&adev->mm_stats.lock);
 398 }
 399
 400 static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
 401                                  struct amdgpu_bo *bo)
 402 {
 403         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 404         struct ttm_operation_ctx ctx = {
 405                 .interruptible = true,
 406                 .no_wait_gpu = false,
 407                 .resv = bo->tbo.base.resv,
 408                 .flags = 0
 409         };
 410         uint32_t domain;
 411         int r;
 412
 413         if (bo->pin_count)
 414                 return 0;
 415
 416         /* Don't move this buffer if we have depleted our allowance
 417          * to move it. Don't move anything if the threshold is zero.
 418          */
 419         if (p->bytes_moved < p->bytes_moved_threshold &&
 420             (!bo->tbo.base.dma_buf ||
 421             list_empty(&bo->tbo.base.dma_buf->attachments))) {
 422                 if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
 423                     (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)) {
 424                         /* And don't move a CPU_ACCESS_REQUIRED BO to limited
 425                          * visible VRAM if we've depleted our allowance to do
 426                          * that.
 427                          */
 428                         if (p->bytes_moved_vis < p->bytes_moved_vis_threshold)
 429                                 domain = bo->preferred_domains;
 430                         else
 431                                 domain = bo->allowed_domains;
 432                 } else {
 433                         domain = bo->preferred_domains;
 434                 }
 435         } else {
 436                 domain = bo->allowed_domains;
 437         }
 438
 439 retry:
 440         amdgpu_bo_placement_from_domain(bo, domain);
 441         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 442
 443         p->bytes_moved += ctx.bytes_moved;
 444         if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
 445             amdgpu_bo_in_cpu_visible_vram(bo))
 446                 p->bytes_moved_vis += ctx.bytes_moved;
 447
 448         if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
 449                 domain = bo->allowed_domains;
 450                 goto retry;
 451         }
 452
 453         return r;
 454 }
 455
 456 static int amdgpu_cs_validate(void *param, struct amdgpu_bo *bo)
 457 {
 458         struct amdgpu_cs_parser *p = param;
 459         int r;
 460
 461         r = amdgpu_cs_bo_validate(p, bo);
 462         if (r)
 463                 return r;
 464
 465         if (bo->shadow)
 466                 r = amdgpu_cs_bo_validate(p, bo->shadow);
 467
 468         return r;
 469 }
 470
 471 static int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p,
 472                             struct list_head *validated)
 473 {
 474         struct ttm_operation_ctx ctx = { true, false };
 475         struct amdgpu_bo_list_entry *lobj;
 476         int r;
 477
 478         list_for_each_entry(lobj, validated, tv.head) {
 479                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(lobj->tv.bo);
 480                 struct mm_struct *usermm;
 481
 482                 usermm = amdgpu_ttm_tt_get_usermm(bo->tbo.ttm);
 483                 if (usermm && usermm != current->mm)
 484                         return -EPERM;
 485
 486                 if (amdgpu_ttm_tt_is_userptr(bo->tbo.ttm) &&
 487                     lobj->user_invalidated && lobj->user_pages) {
 488                         amdgpu_bo_placement_from_domain(bo,
 489                                                         AMDGPU_GEM_DOMAIN_CPU);
 490                         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 491                         if (r)
 492                                 return r;
 493
 494                         amdgpu_ttm_tt_set_user_pages(bo->tbo.ttm,
 495                                                      lobj->user_pages);
 496                 }
 497
 498                 r = amdgpu_cs_validate(p, bo);
 499                 if (r)
 500                         return r;
 501
 502                 kvfree(lobj->user_pages);
 503                 lobj->user_pages = NULL;
 504         }
 505         return 0;
 506 }
 507
 508 static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
 509                                 union drm_amdgpu_cs *cs)
 510 {
 511         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 512         struct amdgpu_vm *vm = &fpriv->vm;
 513         struct amdgpu_bo_list_entry *e;
 514         struct list_head duplicates;
 515         struct amdgpu_bo *gds;
 516         struct amdgpu_bo *gws;
 517         struct amdgpu_bo *oa;
 518         int r;
 519
 520         INIT_LIST_HEAD(&p->validated);
 521
 522         /* p->bo_list could already be assigned if AMDGPU_CHUNK_ID_BO_HANDLES is present */
 523         if (cs->in.bo_list_handle) {
 524                 if (p->bo_list)
 525                         return -EINVAL;
 526
 527                 r = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle,
 528                                        &p->bo_list);
 529                 if (r)
 530                         return r;
 531         } else if (!p->bo_list) {
 532                 /* Create a empty bo_list when no handle is provided */
 533                 r = amdgpu_bo_list_create(p->adev, p->filp, NULL, 0,
 534                                           &p->bo_list);
 535                 if (r)
 536                         return r;
 537         }
 538
 539         /* One for TTM and one for the CS job */
 540         amdgpu_bo_list_for_each_entry(e, p->bo_list)
 541                 e->tv.num_shared = 2;
 542
 543         amdgpu_bo_list_get_list(p->bo_list, &p->validated);
 544
 545         INIT_LIST_HEAD(&duplicates);
 546         amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd);
 547
 548         if (p->uf_entry.tv.bo && !ttm_to_amdgpu_bo(p->uf_entry.tv.bo)->parent)
 549                 list_add(&p->uf_entry.tv.head, &p->validated);
 550
 551         /* Get userptr backing pages. If pages are updated after registered
 552          * in amdgpu_gem_userptr_ioctl(), amdgpu_cs_list_validate() will do
 553          * amdgpu_ttm_backend_bind() to flush and invalidate new pages
 554          */
 555         amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
 556                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 557                 bool userpage_invalidated = false;
 558                 int i;
 559
 560                 e->user_pages = kvmalloc_array(bo->tbo.ttm->num_pages,
 561                                         sizeof(struct page *),
 562                                         GFP_KERNEL | __GFP_ZERO);
 563                 if (!e->user_pages) {
 564                         DRM_ERROR("calloc failure\n");
 565                         return -ENOMEM;
 566                 }
 567
 568                 r = amdgpu_ttm_tt_get_user_pages(bo, e->user_pages);
 569                 if (r) {
 570                         kvfree(e->user_pages);
 571                         e->user_pages = NULL;
 572                         return r;
 573                 }
 574
 575                 for (i = 0; i < bo->tbo.ttm->num_pages; i++) {
 576                         if (bo->tbo.ttm->pages[i] != e->user_pages[i]) {
 577                                 userpage_invalidated = true;
 578                                 break;
 579                         }
 580                 }
 581                 e->user_invalidated = userpage_invalidated;
 582         }
 583
 584         r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
 585                                    &duplicates);
 586         if (unlikely(r != 0)) {
 587                 if (r != -ERESTARTSYS)
 588                         DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
 589                 goto out;
 590         }
 591
 592         amdgpu_cs_get_threshold_for_moves(p->adev, &p->bytes_moved_threshold,
 593                                           &p->bytes_moved_vis_threshold);
 594         p->bytes_moved = 0;
 595         p->bytes_moved_vis = 0;
 596
 597         r = amdgpu_vm_validate_pt_bos(p->adev, &fpriv->vm,
 598                                       amdgpu_cs_validate, p);
 599         if (r) {
 600                 DRM_ERROR("amdgpu_vm_validate_pt_bos() failed.\n");
 601                 goto error_validate;
 602         }
 603
 604         r = amdgpu_cs_list_validate(p, &duplicates);
 605         if (r)
 606                 goto error_validate;
 607
 608         r = amdgpu_cs_list_validate(p, &p->validated);
 609         if (r)
 610                 goto error_validate;
 611
 612         amdgpu_cs_report_moved_bytes(p->adev, p->bytes_moved,
 613                                      p->bytes_moved_vis);
 614
 615         gds = p->bo_list->gds_obj;
 616         gws = p->bo_list->gws_obj;
 617         oa = p->bo_list->oa_obj;
 618
 619         amdgpu_bo_list_for_each_entry(e, p->bo_list) {
 620                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 621
 622                 /* Make sure we use the exclusive slot for shared BOs */
 623                 if (bo->prime_shared_count)
 624                         e->tv.num_shared = 0;
 625                 e->bo_va = amdgpu_vm_bo_find(vm, bo);
 626         }
 627
 628         if (gds) {
 629                 p->job->gds_base = amdgpu_bo_gpu_offset(gds) >> PAGE_SHIFT;
 630                 p->job->gds_size = amdgpu_bo_size(gds) >> PAGE_SHIFT;
 631         }
 632         if (gws) {
 633                 p->job->gws_base = amdgpu_bo_gpu_offset(gws) >> PAGE_SHIFT;
 634                 p->job->gws_size = amdgpu_bo_size(gws) >> PAGE_SHIFT;
 635         }
 636         if (oa) {
 637                 p->job->oa_base = amdgpu_bo_gpu_offset(oa) >> PAGE_SHIFT;
 638                 p->job->oa_size = amdgpu_bo_size(oa) >> PAGE_SHIFT;
 639         }
 640
 641         if (!r && p->uf_entry.tv.bo) {
 642                 struct amdgpu_bo *uf = ttm_to_amdgpu_bo(p->uf_entry.tv.bo);
 643
 644                 r = amdgpu_ttm_alloc_gart(&uf->tbo);
 645                 p->job->uf_addr += amdgpu_bo_gpu_offset(uf);
 646         }
 647
 648 error_validate:
 649         if (r)
 650                 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
 651 out:
 652         return r;
 653 }
 654
 655 static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
 656 {
 657         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 658         struct amdgpu_bo_list_entry *e;
 659         int r;
 660
 661         list_for_each_entry(e, &p->validated, tv.head) {
 662                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 663                 struct dma_resv *resv = bo->tbo.base.resv;
 664                 enum amdgpu_sync_mode sync_mode;
 665
 666                 sync_mode = amdgpu_bo_explicit_sync(bo) ?
 667                         AMDGPU_SYNC_EXPLICIT : AMDGPU_SYNC_NE_OWNER;
 668                 r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, sync_mode,
 669                                      &fpriv->vm);
 670                 if (r)
 671                         return r;
 672         }
 673         return 0;
 674 }
 675
 676 /**
 677  * cs_parser_fini() - clean parser states
 678  * @parser:     parser structure holding parsing context.
 679  * @error:      error number
 680  *
 681  * If error is set than unvalidate buffer, otherwise just free memory
 682  * used by parsing context.
 683  **/
 684 static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error,
 685                                   bool backoff)
 686 {
 687         unsigned i;
 688
 689         if (error && backoff)
 690                 ttm_eu_backoff_reservation(&parser->ticket,
 691                                            &parser->validated);
 692
 693         for (i = 0; i < parser->num_post_deps; i++) {
 694                 drm_syncobj_put(parser->post_deps[i].syncobj);
 695                 kfree(parser->post_deps[i].chain);
 696         }
 697         kfree(parser->post_deps);
 698
 699         dma_fence_put(parser->fence);
 700
 701         if (parser->ctx) {
 702                 mutex_unlock(&parser->ctx->lock);
 703                 amdgpu_ctx_put(parser->ctx);
 704         }
 705         if (parser->bo_list)
 706                 amdgpu_bo_list_put(parser->bo_list);
 707
 708         for (i = 0; i < parser->nchunks; i++)
 709                 kvfree(parser->chunks[i].kdata);
 710         kfree(parser->chunks);
 711         if (parser->job)
 712                 amdgpu_job_free(parser->job);
 713         if (parser->uf_entry.tv.bo) {
 714                 struct amdgpu_bo *uf = ttm_to_amdgpu_bo(parser->uf_entry.tv.bo);
 715
 716                 amdgpu_bo_unref(&uf);
 717         }
 718 }
 719
 720 static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
 721 {
 722         struct amdgpu_ring *ring = to_amdgpu_ring(p->entity->rq->sched);
 723         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 724         struct amdgpu_device *adev = p->adev;
 725         struct amdgpu_vm *vm = &fpriv->vm;
 726         struct amdgpu_bo_list_entry *e;
 727         struct amdgpu_bo_va *bo_va;
 728         struct amdgpu_bo *bo;
 729         int r;
 730
 731         /* Only for UVD/VCE VM emulation */
 732         if (ring->funcs->parse_cs || ring->funcs->patch_cs_in_place) {
 733                 unsigned i, j;
 734
 735                 for (i = 0, j = 0; i < p->nchunks && j < p->job->num_ibs; i++) {
 736                         struct drm_amdgpu_cs_chunk_ib *chunk_ib;
 737                         struct amdgpu_bo_va_mapping *m;
 738                         struct amdgpu_bo *aobj = NULL;
 739                         struct amdgpu_cs_chunk *chunk;
 740                         uint64_t offset, va_start;
 741                         struct amdgpu_ib *ib;
 742                         uint8_t *kptr;
 743
 744                         chunk = &p->chunks[i];
 745                         ib = &p->job->ibs[j];
 746                         chunk_ib = chunk->kdata;
 747
 748                         if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
 749                                 continue;
 750
 751                         va_start = chunk_ib->va_start & AMDGPU_GMC_HOLE_MASK;
 752                         r = amdgpu_cs_find_mapping(p, va_start, &aobj, &m);
 753                         if (r) {
 754                                 DRM_ERROR("IB va_start is invalid\n");
 755                                 return r;
 756                         }
 757
 758                         if ((va_start + chunk_ib->ib_bytes) >
 759                             (m->last + 1) * AMDGPU_GPU_PAGE_SIZE) {
 760                                 DRM_ERROR("IB va_start+ib_bytes is invalid\n");
 761                                 return -EINVAL;
 762                         }
 763
 764                         /* the IB should be reserved at this point */
 765                         r = amdgpu_bo_kmap(aobj, (void **)&kptr);
 766                         if (r) {
 767                                 return r;
 768                         }
 769
 770                         offset = m->start * AMDGPU_GPU_PAGE_SIZE;
 771                         kptr += va_start - offset;
 772
 773                         if (ring->funcs->parse_cs) {
 774                                 memcpy(ib->ptr, kptr, chunk_ib->ib_bytes);
 775                                 amdgpu_bo_kunmap(aobj);
 776
 777                                 r = amdgpu_ring_parse_cs(ring, p, j);
 778                                 if (r)
 779                                         return r;
 780                         } else {
 781                                 ib->ptr = (uint32_t *)kptr;
 782                                 r = amdgpu_ring_patch_cs_in_place(ring, p, j);
 783                                 amdgpu_bo_kunmap(aobj);
 784                                 if (r)
 785                                         return r;
 786                         }
 787
 788                         j++;
 789                 }
 790         }
 791
 792         if (!p->job->vm)
 793                 return amdgpu_cs_sync_rings(p);
 794
 795
 796         r = amdgpu_vm_clear_freed(adev, vm, NULL);
 797         if (r)
 798                 return r;
 799
 800         r = amdgpu_vm_bo_update(adev, fpriv->prt_va, false);
 801         if (r)
 802                 return r;
 803
 804         r = amdgpu_sync_vm_fence(&p->job->sync, fpriv->prt_va->last_pt_update);
 805         if (r)
 806                 return r;
 807
 808         if (amdgpu_mcbp || amdgpu_sriov_vf(adev)) {
 809                 bo_va = fpriv->csa_va;
 810                 BUG_ON(!bo_va);
 811                 r = amdgpu_vm_bo_update(adev, bo_va, false);
 812                 if (r)
 813                         return r;
 814
 815                 r = amdgpu_sync_vm_fence(&p->job->sync, bo_va->last_pt_update);
 816                 if (r)
 817                         return r;
 818         }
 819
 820         amdgpu_bo_list_for_each_entry(e, p->bo_list) {
 821                 /* ignore duplicates */
 822                 bo = ttm_to_amdgpu_bo(e->tv.bo);
 823                 if (!bo)
 824                         continue;
 825
 826                 bo_va = e->bo_va;
 827                 if (bo_va == NULL)
 828                         continue;
 829
 830                 r = amdgpu_vm_bo_update(adev, bo_va, false);
 831                 if (r)
 832                         return r;
 833
 834                 r = amdgpu_sync_vm_fence(&p->job->sync, bo_va->last_pt_update);
 835                 if (r)
 836                         return r;
 837         }
 838
 839         r = amdgpu_vm_handle_moved(adev, vm);
 840         if (r)
 841                 return r;
 842
 843         r = amdgpu_vm_update_pdes(adev, vm, false);
 844         if (r)
 845                 return r;
 846
 847         r = amdgpu_sync_vm_fence(&p->job->sync, vm->last_update);
 848         if (r)
 849                 return r;
 850
 851         p->job->vm_pd_addr = amdgpu_gmc_pd_addr(vm->root.base.bo);
 852
 853         if (amdgpu_vm_debug) {
 854                 /* Invalidate all BOs to test for userspace bugs */
 855                 amdgpu_bo_list_for_each_entry(e, p->bo_list) {
 856                         struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 857
 858                         /* ignore duplicates */
 859                         if (!bo)
 860                                 continue;
 861
 862                         amdgpu_vm_bo_invalidate(adev, bo, false);
 863                 }
 864         }
 865
 866         return amdgpu_cs_sync_rings(p);
 867 }
 868
 869 static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
 870                              struct amdgpu_cs_parser *parser)
 871 {
 872         struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
 873         struct amdgpu_vm *vm = &fpriv->vm;
 874         int r, ce_preempt = 0, de_preempt = 0;
 875         struct amdgpu_ring *ring;
 876         int i, j;
 877
 878         for (i = 0, j = 0; i < parser->nchunks && j < parser->job->num_ibs; i++) {
 879                 struct amdgpu_cs_chunk *chunk;
 880                 struct amdgpu_ib *ib;
 881                 struct drm_amdgpu_cs_chunk_ib *chunk_ib;
 882                 struct drm_sched_entity *entity;
 883
 884                 chunk = &parser->chunks[i];
 885                 ib = &parser->job->ibs[j];
 886                 chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata;
 887
 888                 if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
 889                         continue;
 890
 891                 if (chunk_ib->ip_type == AMDGPU_HW_IP_GFX &&
 892                     (amdgpu_mcbp || amdgpu_sriov_vf(adev))) {
 893                         if (chunk_ib->flags & AMDGPU_IB_FLAG_PREEMPT) {
 894                                 if (chunk_ib->flags & AMDGPU_IB_FLAG_CE)
 895                                         ce_preempt++;
 896                                 else
 897                                         de_preempt++;
 898                         }
 899
 900                         /* each GFX command submit allows 0 or 1 IB preemptible for CE & DE */
 901                         if (ce_preempt > 1 || de_preempt > 1)
 902                                 return -EINVAL;
 903                 }
 904
 905                 r = amdgpu_ctx_get_entity(parser->ctx, chunk_ib->ip_type,
 906                                           chunk_ib->ip_instance, chunk_ib->ring,
 907                                           &entity);
 908                 if (r)
 909                         return r;
 910
 911                 if (chunk_ib->flags & AMDGPU_IB_FLAG_PREAMBLE)
 912                         parser->job->preamble_status |=
 913                                 AMDGPU_PREAMBLE_IB_PRESENT;
 914
 915                 if (parser->entity && parser->entity != entity)
 916                         return -EINVAL;
 917
 918                 /* Return if there is no run queue associated with this entity.
 919                  * Possibly because of disabled HW IP*/
 920                 if (entity->rq == NULL)
 921                         return -EINVAL;
 922
 923                 parser->entity = entity;
 924
 925                 ring = to_amdgpu_ring(entity->rq->sched);
 926                 r =  amdgpu_ib_get(adev, vm, ring->funcs->parse_cs ?
 927                                    chunk_ib->ib_bytes : 0,
 928                                    AMDGPU_IB_POOL_DELAYED, ib);
 929                 if (r) {
 930                         DRM_ERROR("Failed to get ib !\n");
 931                         return r;
 932                 }
 933
 934                 ib->gpu_addr = chunk_ib->va_start;
 935                 ib->length_dw = chunk_ib->ib_bytes / 4;
 936                 ib->flags = chunk_ib->flags;
 937
 938                 j++;
 939         }
 940
 941         /* MM engine doesn't support user fences */
 942         ring = to_amdgpu_ring(parser->entity->rq->sched);
 943         if (parser->job->uf_addr && ring->funcs->no_user_fence)
 944                 return -EINVAL;
 945
 946         return amdgpu_ctx_wait_prev_fence(parser->ctx, parser->entity);
 947 }
 948
 949 static int amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser *p,
 950                                        struct amdgpu_cs_chunk *chunk)
 951 {
 952         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 953         unsigned num_deps;
 954         int i, r;
 955         struct drm_amdgpu_cs_chunk_dep *deps;
 956
 957         deps = (struct drm_amdgpu_cs_chunk_dep *)chunk->kdata;
 958         num_deps = chunk->length_dw * 4 /
 959                 sizeof(struct drm_amdgpu_cs_chunk_dep);
 960
 961         for (i = 0; i < num_deps; ++i) {
 962                 struct amdgpu_ctx *ctx;
 963                 struct drm_sched_entity *entity;
 964                 struct dma_fence *fence;
 965
 966                 ctx = amdgpu_ctx_get(fpriv, deps[i].ctx_id);
 967                 if (ctx == NULL)
 968                         return -EINVAL;
 969
 970                 r = amdgpu_ctx_get_entity(ctx, deps[i].ip_type,
 971                                           deps[i].ip_instance,
 972                                           deps[i].ring, &entity);
 973                 if (r) {
 974                         amdgpu_ctx_put(ctx);
 975                         return r;
 976                 }
 977
 978                 fence = amdgpu_ctx_get_fence(ctx, entity, deps[i].handle);
 979                 amdgpu_ctx_put(ctx);
 980
 981                 if (IS_ERR(fence))
 982                         return PTR_ERR(fence);
 983                 else if (!fence)
 984                         continue;
 985
 986                 if (chunk->chunk_id == AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES) {
 987                         struct drm_sched_fence *s_fence;
 988                         struct dma_fence *old = fence;
 989
 990                         s_fence = to_drm_sched_fence(fence);
 991                         fence = dma_fence_get(&s_fence->scheduled);
 992                         dma_fence_put(old);
 993                 }
 994
 995                 r = amdgpu_sync_fence(&p->job->sync, fence);
 996                 dma_fence_put(fence);
 997                 if (r)
 998                         return r;
 999         }
1000         return 0;
1001 }
1002
1003 static int amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser *p,
1004                                                  uint32_t handle, u64 point,
1005                                                  u64 flags)
1006 {
1007         struct dma_fence *fence;
1008         int r;
1009
1010         r = drm_syncobj_find_fence(p->filp, handle, point, flags, &fence);
1011         if (r) {
1012                 DRM_ERROR("syncobj %u failed to find fence @ %llu (%d)!\n",
1013                           handle, point, r);
1014                 return r;
1015         }
1016
1017         r = amdgpu_sync_fence(&p->job->sync, fence);
1018         dma_fence_put(fence);
1019
1020         return r;
1021 }
1022
1023 static int amdgpu_cs_process_syncobj_in_dep(struct amdgpu_cs_parser *p,
1024                                             struct amdgpu_cs_chunk *chunk)
1025 {
1026         struct drm_amdgpu_cs_chunk_sem *deps;
1027         unsigned num_deps;
1028         int i, r;
1029
1030         deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1031         num_deps = chunk->length_dw * 4 /
1032                 sizeof(struct drm_amdgpu_cs_chunk_sem);
1033         for (i = 0; i < num_deps; ++i) {
1034                 r = amdgpu_syncobj_lookup_and_add_to_sync(p, deps[i].handle,
1035                                                           0, 0);
1036                 if (r)
1037                         return r;
1038         }
1039
1040         return 0;
1041 }
1042
1043
1044 static int amdgpu_cs_process_syncobj_timeline_in_dep(struct amdgpu_cs_parser *p,
1045                                                      struct amdgpu_cs_chunk *chunk)
1046 {
1047         struct drm_amdgpu_cs_chunk_syncobj *syncobj_deps;
1048         unsigned num_deps;
1049         int i, r;
1050
1051         syncobj_deps = (struct drm_amdgpu_cs_chunk_syncobj *)chunk->kdata;
1052         num_deps = chunk->length_dw * 4 /
1053                 sizeof(struct drm_amdgpu_cs_chunk_syncobj);
1054         for (i = 0; i < num_deps; ++i) {
1055                 r = amdgpu_syncobj_lookup_and_add_to_sync(p,
1056                                                           syncobj_deps[i].handle,
1057                                                           syncobj_deps[i].point,
1058                                                           syncobj_deps[i].flags);
1059                 if (r)
1060                         return r;
1061         }
1062
1063         return 0;
1064 }
1065
1066 static int amdgpu_cs_process_syncobj_out_dep(struct amdgpu_cs_parser *p,
1067                                              struct amdgpu_cs_chunk *chunk)
1068 {
1069         struct drm_amdgpu_cs_chunk_sem *deps;
1070         unsigned num_deps;
1071         int i;
1072
1073         deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1074         num_deps = chunk->length_dw * 4 /
1075                 sizeof(struct drm_amdgpu_cs_chunk_sem);
1076
1077         if (p->post_deps)
1078                 return -EINVAL;
1079
1080         p->post_deps = kmalloc_array(num_deps, sizeof(*p->post_deps),
1081                                      GFP_KERNEL);
1082         p->num_post_deps = 0;
1083
1084         if (!p->post_deps)
1085                 return -ENOMEM;
1086
1087
1088         for (i = 0; i < num_deps; ++i) {
1089                 p->post_deps[i].syncobj =
1090                         drm_syncobj_find(p->filp, deps[i].handle);
1091                 if (!p->post_deps[i].syncobj)
1092                         return -EINVAL;
1093                 p->post_deps[i].chain = NULL;
1094                 p->post_deps[i].point = 0;
1095                 p->num_post_deps++;
1096         }
1097
1098         return 0;
1099 }
1100
1101
1102 static int amdgpu_cs_process_syncobj_timeline_out_dep(struct amdgpu_cs_parser *p,
1103                                                       struct amdgpu_cs_chunk *chunk)
1104 {
1105         struct drm_amdgpu_cs_chunk_syncobj *syncobj_deps;
1106         unsigned num_deps;
1107         int i;
1108
1109         syncobj_deps = (struct drm_amdgpu_cs_chunk_syncobj *)chunk->kdata;
1110         num_deps = chunk->length_dw * 4 /
1111                 sizeof(struct drm_amdgpu_cs_chunk_syncobj);
1112
1113         if (p->post_deps)
1114                 return -EINVAL;
1115
1116         p->post_deps = kmalloc_array(num_deps, sizeof(*p->post_deps),
1117                                      GFP_KERNEL);
1118         p->num_post_deps = 0;
1119
1120         if (!p->post_deps)
1121                 return -ENOMEM;
1122
1123         for (i = 0; i < num_deps; ++i) {
1124                 struct amdgpu_cs_post_dep *dep = &p->post_deps[i];
1125
1126                 dep->chain = NULL;
1127                 if (syncobj_deps[i].point) {
1128                         dep->chain = kmalloc(sizeof(*dep->chain), GFP_KERNEL);
1129                         if (!dep->chain)
1130                                 return -ENOMEM;
1131                 }
1132
1133                 dep->syncobj = drm_syncobj_find(p->filp,
1134                                                 syncobj_deps[i].handle);
1135                 if (!dep->syncobj) {
1136                         kfree(dep->chain);
1137                         return -EINVAL;
1138                 }
1139                 dep->point = syncobj_deps[i].point;
1140                 p->num_post_deps++;
1141         }
1142
1143         return 0;
1144 }
1145
1146 static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
1147                                   struct amdgpu_cs_parser *p)
1148 {
1149         int i, r;
1150
1151         for (i = 0; i < p->nchunks; ++i) {
1152                 struct amdgpu_cs_chunk *chunk;
1153
1154                 chunk = &p->chunks[i];
1155
1156                 switch (chunk->chunk_id) {
1157                 case AMDGPU_CHUNK_ID_DEPENDENCIES:
1158                 case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
1159                         r = amdgpu_cs_process_fence_dep(p, chunk);
1160                         if (r)
1161                                 return r;
1162                         break;
1163                 case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
1164                         r = amdgpu_cs_process_syncobj_in_dep(p, chunk);
1165                         if (r)
1166                                 return r;
1167                         break;
1168                 case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
1169                         r = amdgpu_cs_process_syncobj_out_dep(p, chunk);
1170                         if (r)
1171                                 return r;
1172                         break;
1173                 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT:
1174                         r = amdgpu_cs_process_syncobj_timeline_in_dep(p, chunk);
1175                         if (r)
1176                                 return r;
1177                         break;
1178                 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL:
1179                         r = amdgpu_cs_process_syncobj_timeline_out_dep(p, chunk);
1180                         if (r)
1181                                 return r;
1182                         break;
1183                 }
1184         }
1185
1186         return 0;
1187 }
1188
1189 static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p)
1190 {
1191         int i;
1192
1193         for (i = 0; i < p->num_post_deps; ++i) {
1194                 if (p->post_deps[i].chain && p->post_deps[i].point) {
1195                         drm_syncobj_add_point(p->post_deps[i].syncobj,
1196                                               p->post_deps[i].chain,
1197                                               p->fence, p->post_deps[i].point);
1198                         p->post_deps[i].chain = NULL;
1199                 } else {
1200                         drm_syncobj_replace_fence(p->post_deps[i].syncobj,
1201                                                   p->fence);
1202                 }
1203         }
1204 }
1205
1206 static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
1207                             union drm_amdgpu_cs *cs)
1208 {
1209         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
1210         struct drm_sched_entity *entity = p->entity;
1211         struct amdgpu_bo_list_entry *e;
1212         struct amdgpu_job *job;
1213         uint64_t seq;
1214         int r;
1215
1216         job = p->job;
1217         p->job = NULL;
1218
1219         r = drm_sched_job_init(&job->base, entity, &fpriv->vm);
1220         if (r)
1221                 goto error_unlock;
1222
1223         /* No memory allocation is allowed while holding the notifier lock.
1224          * The lock is held until amdgpu_cs_submit is finished and fence is
1225          * added to BOs.
1226          */
1227         mutex_lock(&p->adev->notifier_lock);
1228
1229         /* If userptr are invalidated after amdgpu_cs_parser_bos(), return
1230          * -EAGAIN, drmIoctl in libdrm will restart the amdgpu_cs_ioctl.
1231          */
1232         amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
1233                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
1234
1235                 r |= !amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm);
1236         }
1237         if (r) {
1238                 r = -EAGAIN;
1239                 goto error_abort;
1240         }
1241
1242         p->fence = dma_fence_get(&job->base.s_fence->finished);
1243
1244         amdgpu_ctx_add_fence(p->ctx, entity, p->fence, &seq);
1245         amdgpu_cs_post_dependencies(p);
1246
1247         if ((job->preamble_status & AMDGPU_PREAMBLE_IB_PRESENT) &&
1248             !p->ctx->preamble_presented) {
1249                 job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
1250                 p->ctx->preamble_presented = true;
1251         }
1252
1253         cs->out.handle = seq;
1254         job->uf_sequence = seq;
1255
1256         amdgpu_job_free_resources(job);
1257
1258         trace_amdgpu_cs_ioctl(job);
1259         amdgpu_vm_bo_trace_cs(&fpriv->vm, &p->ticket);
1260         drm_sched_entity_push_job(&job->base, entity);
1261
1262         amdgpu_vm_move_to_lru_tail(p->adev, &fpriv->vm);
1263
1264         ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence);
1265         mutex_unlock(&p->adev->notifier_lock);
1266
1267         return 0;
1268
1269 error_abort:
1270         drm_sched_job_cleanup(&job->base);
1271         mutex_unlock(&p->adev->notifier_lock);
1272
1273 error_unlock:
1274         amdgpu_job_free(job);
1275         return r;
1276 }
1277
1278 int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
1279 {
1280         struct amdgpu_device *adev = dev->dev_private;
1281         union drm_amdgpu_cs *cs = data;
1282         struct amdgpu_cs_parser parser = {};
1283         bool reserved_buffers = false;
1284         int i, r;
1285
1286         if (amdgpu_ras_intr_triggered())
1287                 return -EHWPOISON;
1288
1289         if (!adev->accel_working)
1290                 return -EBUSY;
1291
1292         parser.adev = adev;
1293         parser.filp = filp;
1294
1295         r = amdgpu_cs_parser_init(&parser, data);
1296         if (r) {
1297                 DRM_ERROR("Failed to initialize parser %d!\n", r);
1298                 goto out;
1299         }
1300
1301         r = amdgpu_cs_ib_fill(adev, &parser);
1302         if (r)
1303                 goto out;
1304
1305         r = amdgpu_cs_dependencies(adev, &parser);
1306         if (r) {
1307                 DRM_ERROR("Failed in the dependencies handling %d!\n", r);
1308                 goto out;
1309         }
1310
1311         r = amdgpu_cs_parser_bos(&parser, data);
1312         if (r) {
1313                 if (r == -ENOMEM)
1314                         DRM_ERROR("Not enough memory for command submission!\n");
1315                 else if (r != -ERESTARTSYS && r != -EAGAIN)
1316                         DRM_ERROR("Failed to process the buffer list %d!\n", r);
1317                 goto out;
1318         }
1319
1320         reserved_buffers = true;
1321
1322         for (i = 0; i < parser.job->num_ibs; i++)
1323                 trace_amdgpu_cs(&parser, i);
1324
1325         r = amdgpu_cs_vm_handling(&parser);
1326         if (r)
1327                 goto out;
1328
1329         r = amdgpu_cs_submit(&parser, cs);
1330
1331 out:
1332         amdgpu_cs_parser_fini(&parser, r, reserved_buffers);
1333
1334         return r;
1335 }
1336
1337 /**
1338  * amdgpu_cs_wait_ioctl - wait for a command submission to finish
1339  *
1340  * @dev: drm device
1341  * @data: data from userspace
1342  * @filp: file private
1343  *
1344  * Wait for the command submission identified by handle to finish.
1345  */
1346 int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
1347                          struct drm_file *filp)
1348 {
1349         union drm_amdgpu_wait_cs *wait = data;
1350         unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
1351         struct drm_sched_entity *entity;
1352         struct amdgpu_ctx *ctx;
1353         struct dma_fence *fence;
1354         long r;
1355
1356         ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
1357         if (ctx == NULL)
1358                 return -EINVAL;
1359
1360         r = amdgpu_ctx_get_entity(ctx, wait->in.ip_type, wait->in.ip_instance,
1361                                   wait->in.ring, &entity);
1362         if (r) {
1363                 amdgpu_ctx_put(ctx);
1364                 return r;
1365         }
1366
1367         fence = amdgpu_ctx_get_fence(ctx, entity, wait->in.handle);
1368         if (IS_ERR(fence))
1369                 r = PTR_ERR(fence);
1370         else if (fence) {
1371                 r = dma_fence_wait_timeout(fence, true, timeout);
1372                 if (r > 0 && fence->error)
1373                         r = fence->error;
1374                 dma_fence_put(fence);
1375         } else
1376                 r = 1;
1377
1378         amdgpu_ctx_put(ctx);
1379         if (r < 0)
1380                 return r;
1381
1382         memset(wait, 0, sizeof(*wait));
1383         wait->out.status = (r == 0);
1384
1385         return 0;
1386 }
1387
1388 /**
1389  * amdgpu_cs_get_fence - helper to get fence from drm_amdgpu_fence
1390  *
1391  * @adev: amdgpu device
1392  * @filp: file private
1393  * @user: drm_amdgpu_fence copied from user space
1394  */
1395 static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev,
1396                                              struct drm_file *filp,
1397                                              struct drm_amdgpu_fence *user)
1398 {
1399         struct drm_sched_entity *entity;
1400         struct amdgpu_ctx *ctx;
1401         struct dma_fence *fence;
1402         int r;
1403
1404         ctx = amdgpu_ctx_get(filp->driver_priv, user->ctx_id);
1405         if (ctx == NULL)
1406                 return ERR_PTR(-EINVAL);
1407
1408         r = amdgpu_ctx_get_entity(ctx, user->ip_type, user->ip_instance,
1409                                   user->ring, &entity);
1410         if (r) {
1411                 amdgpu_ctx_put(ctx);
1412                 return ERR_PTR(r);
1413         }
1414
1415         fence = amdgpu_ctx_get_fence(ctx, entity, user->seq_no);
1416         amdgpu_ctx_put(ctx);
1417
1418         return fence;
1419 }
1420
1421 int amdgpu_cs_fence_to_handle_ioctl(struct drm_device *dev, void *data,
1422                                     struct drm_file *filp)
1423 {
1424         struct amdgpu_device *adev = dev->dev_private;
1425         union drm_amdgpu_fence_to_handle *info = data;
1426         struct dma_fence *fence;
1427         struct drm_syncobj *syncobj;
1428         struct sync_file *sync_file;
1429         int fd, r;
1430
1431         fence = amdgpu_cs_get_fence(adev, filp, &info->in.fence);
1432         if (IS_ERR(fence))
1433                 return PTR_ERR(fence);
1434
1435         if (!fence)
1436                 fence = dma_fence_get_stub();
1437
1438         switch (info->in.what) {
1439         case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ:
1440                 r = drm_syncobj_create(&syncobj, 0, fence);
1441                 dma_fence_put(fence);
1442                 if (r)
1443                         return r;
1444                 r = drm_syncobj_get_handle(filp, syncobj, &info->out.handle);
1445                 drm_syncobj_put(syncobj);
1446                 return r;
1447
1448         case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ_FD:
1449                 r = drm_syncobj_create(&syncobj, 0, fence);
1450                 dma_fence_put(fence);
1451                 if (r)
1452                         return r;
1453                 r = drm_syncobj_get_fd(syncobj, (int*)&info->out.handle);
1454                 drm_syncobj_put(syncobj);
1455                 return r;
1456
1457         case AMDGPU_FENCE_TO_HANDLE_GET_SYNC_FILE_FD:
1458                 fd = get_unused_fd_flags(O_CLOEXEC);
1459                 if (fd < 0) {
1460                         dma_fence_put(fence);
1461                         return fd;
1462                 }
1463
1464                 sync_file = sync_file_create(fence);
1465                 dma_fence_put(fence);
1466                 if (!sync_file) {
1467                         put_unused_fd(fd);
1468                         return -ENOMEM;
1469                 }
1470
1471                 fd_install(fd, sync_file->file);
1472                 info->out.handle = fd;
1473                 return 0;
1474
1475         default:
1476                 return -EINVAL;
1477         }
1478 }
1479
1480 /**
1481  * amdgpu_cs_wait_all_fence - wait on all fences to signal
1482  *
1483  * @adev: amdgpu device
1484  * @filp: file private
1485  * @wait: wait parameters
1486  * @fences: array of drm_amdgpu_fence
1487  */
1488 static int amdgpu_cs_wait_all_fences(struct amdgpu_device *adev,
1489                                      struct drm_file *filp,
1490                                      union drm_amdgpu_wait_fences *wait,
1491                                      struct drm_amdgpu_fence *fences)
1492 {
1493         uint32_t fence_count = wait->in.fence_count;
1494         unsigned int i;
1495         long r = 1;
1496
1497         for (i = 0; i < fence_count; i++) {
1498                 struct dma_fence *fence;
1499                 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1500
1501                 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1502                 if (IS_ERR(fence))
1503                         return PTR_ERR(fence);
1504                 else if (!fence)
1505                         continue;
1506
1507                 r = dma_fence_wait_timeout(fence, true, timeout);
1508                 dma_fence_put(fence);
1509                 if (r < 0)
1510                         return r;
1511
1512                 if (r == 0)
1513                         break;
1514
1515                 if (fence->error)
1516                         return fence->error;
1517         }
1518
1519         memset(wait, 0, sizeof(*wait));
1520         wait->out.status = (r > 0);
1521
1522         return 0;
1523 }
1524
1525 /**
1526  * amdgpu_cs_wait_any_fence - wait on any fence to signal
1527  *
1528  * @adev: amdgpu device
1529  * @filp: file private
1530  * @wait: wait parameters
1531  * @fences: array of drm_amdgpu_fence
1532  */
1533 static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev,
1534                                     struct drm_file *filp,
1535                                     union drm_amdgpu_wait_fences *wait,
1536                                     struct drm_amdgpu_fence *fences)
1537 {
1538         unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1539         uint32_t fence_count = wait->in.fence_count;
1540         uint32_t first = ~0;
1541         struct dma_fence **array;
1542         unsigned int i;
1543         long r;
1544
1545         /* Prepare the fence array */
1546         array = kcalloc(fence_count, sizeof(struct dma_fence *), GFP_KERNEL);
1547
1548         if (array == NULL)
1549                 return -ENOMEM;
1550
1551         for (i = 0; i < fence_count; i++) {
1552                 struct dma_fence *fence;
1553
1554                 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1555                 if (IS_ERR(fence)) {
1556                         r = PTR_ERR(fence);
1557                         goto err_free_fence_array;
1558                 } else if (fence) {
1559                         array[i] = fence;
1560                 } else { /* NULL, the fence has been already signaled */
1561                         r = 1;
1562                         first = i;
1563                         goto out;
1564                 }
1565         }
1566
1567         r = dma_fence_wait_any_timeout(array, fence_count, true, timeout,
1568                                        &first);
1569         if (r < 0)
1570                 goto err_free_fence_array;
1571
1572 out:
1573         memset(wait, 0, sizeof(*wait));
1574         wait->out.status = (r > 0);
1575         wait->out.first_signaled = first;
1576
1577         if (first < fence_count && array[first])
1578                 r = array[first]->error;
1579         else
1580                 r = 0;
1581
1582 err_free_fence_array:
1583         for (i = 0; i < fence_count; i++)
1584                 dma_fence_put(array[i]);
1585         kfree(array);
1586
1587         return r;
1588 }
1589
1590 /**
1591  * amdgpu_cs_wait_fences_ioctl - wait for multiple command submissions to finish
1592  *
1593  * @dev: drm device
1594  * @data: data from userspace
1595  * @filp: file private
1596  */
1597 int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
1598                                 struct drm_file *filp)
1599 {
1600         struct amdgpu_device *adev = dev->dev_private;
1601         union drm_amdgpu_wait_fences *wait = data;
1602         uint32_t fence_count = wait->in.fence_count;
1603         struct drm_amdgpu_fence *fences_user;
1604         struct drm_amdgpu_fence *fences;
1605         int r;
1606
1607         /* Get the fences from userspace */
1608         fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
1609                         GFP_KERNEL);
1610         if (fences == NULL)
1611                 return -ENOMEM;
1612
1613         fences_user = u64_to_user_ptr(wait->in.fences);
1614         if (copy_from_user(fences, fences_user,
1615                 sizeof(struct drm_amdgpu_fence) * fence_count)) {
1616                 r = -EFAULT;
1617                 goto err_free_fences;
1618         }
1619
1620         if (wait->in.wait_all)
1621                 r = amdgpu_cs_wait_all_fences(adev, filp, wait, fences);
1622         else
1623                 r = amdgpu_cs_wait_any_fence(adev, filp, wait, fences);
1624
1625 err_free_fences:
1626         kfree(fences);
1627
1628         return r;
1629 }
1630
1631 /**
1632  * amdgpu_cs_find_bo_va - find bo_va for VM address
1633  *
1634  * @parser: command submission parser context
1635  * @addr: VM address
1636  * @bo: resulting BO of the mapping found
1637  *
1638  * Search the buffer objects in the command submission context for a certain
1639  * virtual memory address. Returns allocation structure when found, NULL
1640  * otherwise.
1641  */
1642 int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
1643                            uint64_t addr, struct amdgpu_bo **bo,
1644                            struct amdgpu_bo_va_mapping **map)
1645 {
1646         struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
1647         struct ttm_operation_ctx ctx = { false, false };
1648         struct amdgpu_vm *vm = &fpriv->vm;
1649         struct amdgpu_bo_va_mapping *mapping;
1650         int r;
1651
1652         addr /= AMDGPU_GPU_PAGE_SIZE;
1653
1654         mapping = amdgpu_vm_bo_lookup_mapping(vm, addr);
1655         if (!mapping || !mapping->bo_va || !mapping->bo_va->base.bo)
1656                 return -EINVAL;
1657
1658         *bo = mapping->bo_va->base.bo;
1659         *map = mapping;
1660
1661         /* Double check that the BO is reserved by this CS */
1662         if (dma_resv_locking_ctx((*bo)->tbo.base.resv) != &parser->ticket)
1663                 return -EINVAL;
1664
1665         if (!((*bo)->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)) {
1666                 (*bo)->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
1667                 amdgpu_bo_placement_from_domain(*bo, (*bo)->allowed_domains);
1668                 r = ttm_bo_validate(&(*bo)->tbo, &(*bo)->placement, &ctx);
1669                 if (r)
1670                         return r;
1671         }
1672
1673         return amdgpu_ttm_alloc_gart(&(*bo)->tbo);
1674 }