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