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
  28 #include <linux/file.h>
  29 #include <linux/pagemap.h>
  30 #include <linux/sync_file.h>
  31
  32 #include <drm/amdgpu_drm.h>
  33 #include <drm/drm_syncobj.h>
  34 #include "amdgpu.h"
  35 #include "amdgpu_trace.h"
  36 #include "amdgpu_gmc.h"
  37 #include "amdgpu_gem.h"
  38
  39 static int amdgpu_cs_user_fence_chunk(struct amdgpu_cs_parser *p,
  40                                       struct drm_amdgpu_cs_chunk_fence *data,
  41                                       uint32_t *offset)
  42 {
  43         struct drm_gem_object *gobj;
  44         struct amdgpu_bo *bo;
  45         unsigned long size;
  46         int r;
  47
  48         gobj = drm_gem_object_lookup(p->filp, data->handle);
  49         if (gobj == NULL)
  50                 return -EINVAL;
  51
  52         bo = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
  53         p->uf_entry.priority = 0;
  54         p->uf_entry.tv.bo = &bo->tbo;
  55         /* One for TTM and one for the CS job */
  56         p->uf_entry.tv.num_shared = 2;
  57
  58         drm_gem_object_put_unlocked(gobj);
  59
  60         size = amdgpu_bo_size(bo);
  61         if (size != PAGE_SIZE || (data->offset + 8) > size) {
  62                 r = -EINVAL;
  63                 goto error_unref;
  64         }
  65
  66         if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm)) {
  67                 r = -EINVAL;
  68                 goto error_unref;
  69         }
  70
  71         *offset = data->offset;
  72
  73         return 0;
  74
  75 error_unref:
  76         amdgpu_bo_unref(&bo);
  77         return r;
  78 }
  79
  80 static int amdgpu_cs_bo_handles_chunk(struct amdgpu_cs_parser *p,
  81                                       struct drm_amdgpu_bo_list_in *data)
  82 {
  83         int r;
  84         struct drm_amdgpu_bo_list_entry *info = NULL;
  85
  86         r = amdgpu_bo_create_list_entry_array(data, &info);
  87         if (r)
  88                 return r;
  89
  90         r = amdgpu_bo_list_create(p->adev, p->filp, info, data->bo_number,
  91                                   &p->bo_list);
  92         if (r)
  93                 goto error_free;
  94
  95         kvfree(info);
  96         return 0;
  97
  98 error_free:
  99         if (info)
 100                 kvfree(info);
 101
 102         return r;
 103 }
 104
 105 static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs *cs)
 106 {
 107         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 108         struct amdgpu_vm *vm = &fpriv->vm;
 109         uint64_t *chunk_array_user;
 110         uint64_t *chunk_array;
 111         unsigned size, num_ibs = 0;
 112         uint32_t uf_offset = 0;
 113         int i;
 114         int ret;
 115
 116         if (cs->in.num_chunks == 0)
 117                 return 0;
 118
 119         chunk_array = kmalloc_array(cs->in.num_chunks, sizeof(uint64_t), GFP_KERNEL);
 120         if (!chunk_array)
 121                 return -ENOMEM;
 122
 123         p->ctx = amdgpu_ctx_get(fpriv, cs->in.ctx_id);
 124         if (!p->ctx) {
 125                 ret = -EINVAL;
 126                 goto free_chunk;
 127         }
 128
 129         mutex_lock(&p->ctx->lock);
 130
 131         /* skip guilty context job */
 132         if (atomic_read(&p->ctx->guilty) == 1) {
 133                 ret = -ECANCELED;
 134                 goto free_chunk;
 135         }
 136
 137         /* get chunks */
 138         chunk_array_user = u64_to_user_ptr(cs->in.chunks);
 139         if (copy_from_user(chunk_array, chunk_array_user,
 140                            sizeof(uint64_t)*cs->in.num_chunks)) {
 141                 ret = -EFAULT;
 142                 goto free_chunk;
 143         }
 144
 145         p->nchunks = cs->in.num_chunks;
 146         p->chunks = kmalloc_array(p->nchunks, sizeof(struct amdgpu_cs_chunk),
 147                             GFP_KERNEL);
 148         if (!p->chunks) {
 149                 ret = -ENOMEM;
 150                 goto free_chunk;
 151         }
 152
 153         for (i = 0; i < p->nchunks; i++) {
 154                 struct drm_amdgpu_cs_chunk __user **chunk_ptr = NULL;
 155                 struct drm_amdgpu_cs_chunk user_chunk;
 156                 uint32_t __user *cdata;
 157
 158                 chunk_ptr = u64_to_user_ptr(chunk_array[i]);
 159                 if (copy_from_user(&user_chunk, chunk_ptr,
 160                                        sizeof(struct drm_amdgpu_cs_chunk))) {
 161                         ret = -EFAULT;
 162                         i--;
 163                         goto free_partial_kdata;
 164                 }
 165                 p->chunks[i].chunk_id = user_chunk.chunk_id;
 166                 p->chunks[i].length_dw = user_chunk.length_dw;
 167
 168                 size = p->chunks[i].length_dw;
 169                 cdata = u64_to_user_ptr(user_chunk.chunk_data);
 170
 171                 p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t), GFP_KERNEL);
 172                 if (p->chunks[i].kdata == NULL) {
 173                         ret = -ENOMEM;
 174                         i--;
 175                         goto free_partial_kdata;
 176                 }
 177                 size *= sizeof(uint32_t);
 178                 if (copy_from_user(p->chunks[i].kdata, cdata, size)) {
 179                         ret = -EFAULT;
 180                         goto free_partial_kdata;
 181                 }
 182
 183                 switch (p->chunks[i].chunk_id) {
 184                 case AMDGPU_CHUNK_ID_IB:
 185                         ++num_ibs;
 186                         break;
 187
 188                 case AMDGPU_CHUNK_ID_FENCE:
 189                         size = sizeof(struct drm_amdgpu_cs_chunk_fence);
 190                         if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
 191                                 ret = -EINVAL;
 192                                 goto free_partial_kdata;
 193                         }
 194
 195                         ret = amdgpu_cs_user_fence_chunk(p, p->chunks[i].kdata,
 196                                                          &uf_offset);
 197                         if (ret)
 198                                 goto free_partial_kdata;
 199
 200                         break;
 201
 202                 case AMDGPU_CHUNK_ID_BO_HANDLES:
 203                         size = sizeof(struct drm_amdgpu_bo_list_in);
 204                         if (p->chunks[i].length_dw * sizeof(uint32_t) < size) {
 205                                 ret = -EINVAL;
 206                                 goto free_partial_kdata;
 207                         }
 208
 209                         ret = amdgpu_cs_bo_handles_chunk(p, p->chunks[i].kdata);
 210                         if (ret)
 211                                 goto free_partial_kdata;
 212
 213                         break;
 214
 215                 case AMDGPU_CHUNK_ID_DEPENDENCIES:
 216                 case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
 217                 case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
 218                 case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
 219                 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT:
 220                 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL:
 221                         break;
 222
 223                 default:
 224                         ret = -EINVAL;
 225                         goto free_partial_kdata;
 226                 }
 227         }
 228
 229         ret = amdgpu_job_alloc(p->adev, num_ibs, &p->job, vm);
 230         if (ret)
 231                 goto free_all_kdata;
 232
 233         if (p->ctx->vram_lost_counter != p->job->vram_lost_counter) {
 234                 ret = -ECANCELED;
 235                 goto free_all_kdata;
 236         }
 237
 238         if (p->uf_entry.tv.bo)
 239                 p->job->uf_addr = uf_offset;
 240         kfree(chunk_array);
 241
 242         /* Use this opportunity to fill in task info for the vm */
 243         amdgpu_vm_set_task_info(vm);
 244
 245         return 0;
 246
 247 free_all_kdata:
 248         i = p->nchunks - 1;
 249 free_partial_kdata:
 250         for (; i >= 0; i--)
 251                 kvfree(p->chunks[i].kdata);
 252         kfree(p->chunks);
 253         p->chunks = NULL;
 254         p->nchunks = 0;
 255 free_chunk:
 256         kfree(chunk_array);
 257
 258         return ret;
 259 }
 260
 261 /* Convert microseconds to bytes. */
 262 static u64 us_to_bytes(struct amdgpu_device *adev, s64 us)
 263 {
 264         if (us <= 0 || !adev->mm_stats.log2_max_MBps)
 265                 return 0;
 266
 267         /* Since accum_us is incremented by a million per second, just
 268          * multiply it by the number of MB/s to get the number of bytes.
 269          */
 270         return us << adev->mm_stats.log2_max_MBps;
 271 }
 272
 273 static s64 bytes_to_us(struct amdgpu_device *adev, u64 bytes)
 274 {
 275         if (!adev->mm_stats.log2_max_MBps)
 276                 return 0;
 277
 278         return bytes >> adev->mm_stats.log2_max_MBps;
 279 }
 280
 281 /* Returns how many bytes TTM can move right now. If no bytes can be moved,
 282  * it returns 0. If it returns non-zero, it's OK to move at least one buffer,
 283  * which means it can go over the threshold once. If that happens, the driver
 284  * will be in debt and no other buffer migrations can be done until that debt
 285  * is repaid.
 286  *
 287  * This approach allows moving a buffer of any size (it's important to allow
 288  * that).
 289  *
 290  * The currency is simply time in microseconds and it increases as the clock
 291  * ticks. The accumulated microseconds (us) are converted to bytes and
 292  * returned.
 293  */
 294 static void amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev,
 295                                               u64 *max_bytes,
 296                                               u64 *max_vis_bytes)
 297 {
 298         s64 time_us, increment_us;
 299         u64 free_vram, total_vram, used_vram;
 300
 301         /* Allow a maximum of 200 accumulated ms. This is basically per-IB
 302          * throttling.
 303          *
 304          * It means that in order to get full max MBps, at least 5 IBs per
 305          * second must be submitted and not more than 200ms apart from each
 306          * other.
 307          */
 308         const s64 us_upper_bound = 200000;
 309
 310         if (!adev->mm_stats.log2_max_MBps) {
 311                 *max_bytes = 0;
 312                 *max_vis_bytes = 0;
 313                 return;
 314         }
 315
 316         total_vram = adev->gmc.real_vram_size - atomic64_read(&adev->vram_pin_size);
 317         used_vram = amdgpu_vram_mgr_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
 318         free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram;
 319
 320         spin_lock(&adev->mm_stats.lock);
 321
 322         /* Increase the amount of accumulated us. */
 323         time_us = ktime_to_us(ktime_get());
 324         increment_us = time_us - adev->mm_stats.last_update_us;
 325         adev->mm_stats.last_update_us = time_us;
 326         adev->mm_stats.accum_us = min(adev->mm_stats.accum_us + increment_us,
 327                                       us_upper_bound);
 328
 329         /* This prevents the short period of low performance when the VRAM
 330          * usage is low and the driver is in debt or doesn't have enough
 331          * accumulated us to fill VRAM quickly.
 332          *
 333          * The situation can occur in these cases:
 334          * - a lot of VRAM is freed by userspace
 335          * - the presence of a big buffer causes a lot of evictions
 336          *   (solution: split buffers into smaller ones)
 337          *
 338          * If 128 MB or 1/8th of VRAM is free, start filling it now by setting
 339          * accum_us to a positive number.
 340          */
 341         if (free_vram >= 128 * 1024 * 1024 || free_vram >= total_vram / 8) {
 342                 s64 min_us;
 343
 344                 /* Be more aggresive on dGPUs. Try to fill a portion of free
 345                  * VRAM now.
 346                  */
 347                 if (!(adev->flags & AMD_IS_APU))
 348                         min_us = bytes_to_us(adev, free_vram / 4);
 349                 else
 350                         min_us = 0; /* Reset accum_us on APUs. */
 351
 352                 adev->mm_stats.accum_us = max(min_us, adev->mm_stats.accum_us);
 353         }
 354
 355         /* This is set to 0 if the driver is in debt to disallow (optional)
 356          * buffer moves.
 357          */
 358         *max_bytes = us_to_bytes(adev, adev->mm_stats.accum_us);
 359
 360         /* Do the same for visible VRAM if half of it is free */
 361         if (!amdgpu_gmc_vram_full_visible(&adev->gmc)) {
 362                 u64 total_vis_vram = adev->gmc.visible_vram_size;
 363                 u64 used_vis_vram =
 364                         amdgpu_vram_mgr_vis_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
 365
 366                 if (used_vis_vram < total_vis_vram) {
 367                         u64 free_vis_vram = total_vis_vram - used_vis_vram;
 368                         adev->mm_stats.accum_us_vis = min(adev->mm_stats.accum_us_vis +
 369                                                           increment_us, us_upper_bound);
 370
 371                         if (free_vis_vram >= total_vis_vram / 2)
 372                                 adev->mm_stats.accum_us_vis =
 373                                         max(bytes_to_us(adev, free_vis_vram / 2),
 374                                             adev->mm_stats.accum_us_vis);
 375                 }
 376
 377                 *max_vis_bytes = us_to_bytes(adev, adev->mm_stats.accum_us_vis);
 378         } else {
 379                 *max_vis_bytes = 0;
 380         }
 381
 382         spin_unlock(&adev->mm_stats.lock);
 383 }
 384
 385 /* Report how many bytes have really been moved for the last command
 386  * submission. This can result in a debt that can stop buffer migrations
 387  * temporarily.
 388  */
 389 void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes,
 390                                   u64 num_vis_bytes)
 391 {
 392         spin_lock(&adev->mm_stats.lock);
 393         adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes);
 394         adev->mm_stats.accum_us_vis -= bytes_to_us(adev, num_vis_bytes);
 395         spin_unlock(&adev->mm_stats.lock);
 396 }
 397
 398 static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
 399                                  struct amdgpu_bo *bo)
 400 {
 401         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 402         struct ttm_operation_ctx ctx = {
 403                 .interruptible = true,
 404                 .no_wait_gpu = false,
 405                 .resv = bo->tbo.resv,
 406                 .flags = 0
 407         };
 408         uint32_t domain;
 409         int r;
 410
 411         if (bo->pin_count)
 412                 return 0;
 413
 414         /* Don't move this buffer if we have depleted our allowance
 415          * to move it. Don't move anything if the threshold is zero.
 416          */
 417         if (p->bytes_moved < p->bytes_moved_threshold) {
 418                 if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
 419                     (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)) {
 420                         /* And don't move a CPU_ACCESS_REQUIRED BO to limited
 421                          * visible VRAM if we've depleted our allowance to do
 422                          * that.
 423                          */
 424                         if (p->bytes_moved_vis < p->bytes_moved_vis_threshold)
 425                                 domain = bo->preferred_domains;
 426                         else
 427                                 domain = bo->allowed_domains;
 428                 } else {
 429                         domain = bo->preferred_domains;
 430                 }
 431         } else {
 432                 domain = bo->allowed_domains;
 433         }
 434
 435 retry:
 436         amdgpu_bo_placement_from_domain(bo, domain);
 437         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 438
 439         p->bytes_moved += ctx.bytes_moved;
 440         if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
 441             amdgpu_bo_in_cpu_visible_vram(bo))
 442                 p->bytes_moved_vis += ctx.bytes_moved;
 443
 444         if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
 445                 domain = bo->allowed_domains;
 446                 goto retry;
 447         }
 448
 449         return r;
 450 }
 451
 452 /* Last resort, try to evict something from the current working set */
 453 static bool amdgpu_cs_try_evict(struct amdgpu_cs_parser *p,
 454                                 struct amdgpu_bo *validated)
 455 {
 456         uint32_t domain = validated->allowed_domains;
 457         struct ttm_operation_ctx ctx = { true, false };
 458         int r;
 459
 460         if (!p->evictable)
 461                 return false;
 462
 463         for (;&p->evictable->tv.head != &p->validated;
 464              p->evictable = list_prev_entry(p->evictable, tv.head)) {
 465
 466                 struct amdgpu_bo_list_entry *candidate = p->evictable;
 467                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(candidate->tv.bo);
 468                 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 469                 bool update_bytes_moved_vis;
 470                 uint32_t other;
 471
 472                 /* If we reached our current BO we can forget it */
 473                 if (bo == validated)
 474                         break;
 475
 476                 /* We can't move pinned BOs here */
 477                 if (bo->pin_count)
 478                         continue;
 479
 480                 other = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
 481
 482                 /* Check if this BO is in one of the domains we need space for */
 483                 if (!(other & domain))
 484                         continue;
 485
 486                 /* Check if we can move this BO somewhere else */
 487                 other = bo->allowed_domains & ~domain;
 488                 if (!other)
 489                         continue;
 490
 491                 /* Good we can try to move this BO somewhere else */
 492                 update_bytes_moved_vis =
 493                                 !amdgpu_gmc_vram_full_visible(&adev->gmc) &&
 494                                 amdgpu_bo_in_cpu_visible_vram(bo);
 495                 amdgpu_bo_placement_from_domain(bo, other);
 496                 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 497                 p->bytes_moved += ctx.bytes_moved;
 498                 if (update_bytes_moved_vis)
 499                         p->bytes_moved_vis += ctx.bytes_moved;
 500
 501                 if (unlikely(r))
 502                         break;
 503
 504                 p->evictable = list_prev_entry(p->evictable, tv.head);
 505                 list_move(&candidate->tv.head, &p->validated);
 506
 507                 return true;
 508         }
 509
 510         return false;
 511 }
 512
 513 static int amdgpu_cs_validate(void *param, struct amdgpu_bo *bo)
 514 {
 515         struct amdgpu_cs_parser *p = param;
 516         int r;
 517
 518         do {
 519                 r = amdgpu_cs_bo_validate(p, bo);
 520         } while (r == -ENOMEM && amdgpu_cs_try_evict(p, bo));
 521         if (r)
 522                 return r;
 523
 524         if (bo->shadow)
 525                 r = amdgpu_cs_bo_validate(p, bo->shadow);
 526
 527         return r;
 528 }
 529
 530 static int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p,
 531                             struct list_head *validated)
 532 {
 533         struct ttm_operation_ctx ctx = { true, false };
 534         struct amdgpu_bo_list_entry *lobj;
 535         int r;
 536
 537         list_for_each_entry(lobj, validated, tv.head) {
 538                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(lobj->tv.bo);
 539                 bool binding_userptr = false;
 540                 struct mm_struct *usermm;
 541
 542                 usermm = amdgpu_ttm_tt_get_usermm(bo->tbo.ttm);
 543                 if (usermm && usermm != current->mm)
 544                         return -EPERM;
 545
 546                 if (amdgpu_ttm_tt_is_userptr(bo->tbo.ttm) &&
 547                     lobj->user_invalidated && lobj->user_pages) {
 548                         amdgpu_bo_placement_from_domain(bo,
 549                                                         AMDGPU_GEM_DOMAIN_CPU);
 550                         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 551                         if (r)
 552                                 return r;
 553
 554                         amdgpu_ttm_tt_set_user_pages(bo->tbo.ttm,
 555                                                      lobj->user_pages);
 556                         binding_userptr = true;
 557                 }
 558
 559                 if (p->evictable == lobj)
 560                         p->evictable = NULL;
 561
 562                 r = amdgpu_cs_validate(p, bo);
 563                 if (r)
 564                         return r;
 565
 566                 if (binding_userptr) {
 567                         kvfree(lobj->user_pages);
 568                         lobj->user_pages = NULL;
 569                 }
 570         }
 571         return 0;
 572 }
 573
 574 static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
 575                                 union drm_amdgpu_cs *cs)
 576 {
 577         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 578         struct amdgpu_vm *vm = &fpriv->vm;
 579         struct amdgpu_bo_list_entry *e;
 580         struct list_head duplicates;
 581         struct amdgpu_bo *gds;
 582         struct amdgpu_bo *gws;
 583         struct amdgpu_bo *oa;
 584         int r;
 585
 586         INIT_LIST_HEAD(&p->validated);
 587
 588         /* p->bo_list could already be assigned if AMDGPU_CHUNK_ID_BO_HANDLES is present */
 589         if (cs->in.bo_list_handle) {
 590                 if (p->bo_list)
 591                         return -EINVAL;
 592
 593                 r = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle,
 594                                        &p->bo_list);
 595                 if (r)
 596                         return r;
 597         } else if (!p->bo_list) {
 598                 /* Create a empty bo_list when no handle is provided */
 599                 r = amdgpu_bo_list_create(p->adev, p->filp, NULL, 0,
 600                                           &p->bo_list);
 601                 if (r)
 602                         return r;
 603         }
 604
 605         /* One for TTM and one for the CS job */
 606         amdgpu_bo_list_for_each_entry(e, p->bo_list)
 607                 e->tv.num_shared = 2;
 608
 609         amdgpu_bo_list_get_list(p->bo_list, &p->validated);
 610         if (p->bo_list->first_userptr != p->bo_list->num_entries)
 611                 p->mn = amdgpu_mn_get(p->adev, AMDGPU_MN_TYPE_GFX);
 612
 613         INIT_LIST_HEAD(&duplicates);
 614         amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd);
 615
 616         if (p->uf_entry.tv.bo && !ttm_to_amdgpu_bo(p->uf_entry.tv.bo)->parent)
 617                 list_add(&p->uf_entry.tv.head, &p->validated);
 618
 619         /* Get userptr backing pages. If pages are updated after registered
 620          * in amdgpu_gem_userptr_ioctl(), amdgpu_cs_list_validate() will do
 621          * amdgpu_ttm_backend_bind() to flush and invalidate new pages
 622          */
 623         amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
 624                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 625                 bool userpage_invalidated = false;
 626                 int i;
 627
 628                 e->user_pages = kvmalloc_array(bo->tbo.ttm->num_pages,
 629                                         sizeof(struct page *),
 630                                         GFP_KERNEL | __GFP_ZERO);
 631                 if (!e->user_pages) {
 632                         DRM_ERROR("calloc failure\n");
 633                         return -ENOMEM;
 634                 }
 635
 636                 r = amdgpu_ttm_tt_get_user_pages(bo, e->user_pages);
 637                 if (r) {
 638                         kvfree(e->user_pages);
 639                         e->user_pages = NULL;
 640                         return r;
 641                 }
 642
 643                 for (i = 0; i < bo->tbo.ttm->num_pages; i++) {
 644                         if (bo->tbo.ttm->pages[i] != e->user_pages[i]) {
 645                                 userpage_invalidated = true;
 646                                 break;
 647                         }
 648                 }
 649                 e->user_invalidated = userpage_invalidated;
 650         }
 651
 652         r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
 653                                    &duplicates, false);
 654         if (unlikely(r != 0)) {
 655                 if (r != -ERESTARTSYS)
 656                         DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
 657                 goto out;
 658         }
 659
 660         amdgpu_cs_get_threshold_for_moves(p->adev, &p->bytes_moved_threshold,
 661                                           &p->bytes_moved_vis_threshold);
 662         p->bytes_moved = 0;
 663         p->bytes_moved_vis = 0;
 664         p->evictable = list_last_entry(&p->validated,
 665                                        struct amdgpu_bo_list_entry,
 666                                        tv.head);
 667
 668         r = amdgpu_vm_validate_pt_bos(p->adev, &fpriv->vm,
 669                                       amdgpu_cs_validate, p);
 670         if (r) {
 671                 DRM_ERROR("amdgpu_vm_validate_pt_bos() failed.\n");
 672                 goto error_validate;
 673         }
 674
 675         r = amdgpu_cs_list_validate(p, &duplicates);
 676         if (r)
 677                 goto error_validate;
 678
 679         r = amdgpu_cs_list_validate(p, &p->validated);
 680         if (r)
 681                 goto error_validate;
 682
 683         amdgpu_cs_report_moved_bytes(p->adev, p->bytes_moved,
 684                                      p->bytes_moved_vis);
 685
 686         gds = p->bo_list->gds_obj;
 687         gws = p->bo_list->gws_obj;
 688         oa = p->bo_list->oa_obj;
 689
 690         amdgpu_bo_list_for_each_entry(e, p->bo_list) {
 691                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 692
 693                 /* Make sure we use the exclusive slot for shared BOs */
 694                 if (bo->prime_shared_count)
 695                         e->tv.num_shared = 0;
 696                 e->bo_va = amdgpu_vm_bo_find(vm, bo);
 697         }
 698
 699         if (gds) {
 700                 p->job->gds_base = amdgpu_bo_gpu_offset(gds) >> PAGE_SHIFT;
 701                 p->job->gds_size = amdgpu_bo_size(gds) >> PAGE_SHIFT;
 702         }
 703         if (gws) {
 704                 p->job->gws_base = amdgpu_bo_gpu_offset(gws) >> PAGE_SHIFT;
 705                 p->job->gws_size = amdgpu_bo_size(gws) >> PAGE_SHIFT;
 706         }
 707         if (oa) {
 708                 p->job->oa_base = amdgpu_bo_gpu_offset(oa) >> PAGE_SHIFT;
 709                 p->job->oa_size = amdgpu_bo_size(oa) >> PAGE_SHIFT;
 710         }
 711
 712         if (!r && p->uf_entry.tv.bo) {
 713                 struct amdgpu_bo *uf = ttm_to_amdgpu_bo(p->uf_entry.tv.bo);
 714
 715                 r = amdgpu_ttm_alloc_gart(&uf->tbo);
 716                 p->job->uf_addr += amdgpu_bo_gpu_offset(uf);
 717         }
 718
 719 error_validate:
 720         if (r)
 721                 ttm_eu_backoff_reservation(&p->ticket, &p->validated);
 722 out:
 723         return r;
 724 }
 725
 726 static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
 727 {
 728         struct amdgpu_bo_list_entry *e;
 729         int r;
 730
 731         list_for_each_entry(e, &p->validated, tv.head) {
 732                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 733                 struct reservation_object *resv = bo->tbo.resv;
 734
 735                 r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, p->filp,
 736                                      amdgpu_bo_explicit_sync(bo));
 737
 738                 if (r)
 739                         return r;
 740         }
 741         return 0;
 742 }
 743
 744 /**
 745  * cs_parser_fini() - clean parser states
 746  * @parser:     parser structure holding parsing context.
 747  * @error:      error number
 748  *
 749  * If error is set than unvalidate buffer, otherwise just free memory
 750  * used by parsing context.
 751  **/
 752 static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error,
 753                                   bool backoff)
 754 {
 755         unsigned i;
 756
 757         if (error && backoff)
 758                 ttm_eu_backoff_reservation(&parser->ticket,
 759                                            &parser->validated);
 760
 761         for (i = 0; i < parser->num_post_deps; i++) {
 762                 drm_syncobj_put(parser->post_deps[i].syncobj);
 763                 kfree(parser->post_deps[i].chain);
 764         }
 765         kfree(parser->post_deps);
 766
 767         dma_fence_put(parser->fence);
 768
 769         if (parser->ctx) {
 770                 mutex_unlock(&parser->ctx->lock);
 771                 amdgpu_ctx_put(parser->ctx);
 772         }
 773         if (parser->bo_list)
 774                 amdgpu_bo_list_put(parser->bo_list);
 775
 776         for (i = 0; i < parser->nchunks; i++)
 777                 kvfree(parser->chunks[i].kdata);
 778         kfree(parser->chunks);
 779         if (parser->job)
 780                 amdgpu_job_free(parser->job);
 781         if (parser->uf_entry.tv.bo) {
 782                 struct amdgpu_bo *uf = ttm_to_amdgpu_bo(parser->uf_entry.tv.bo);
 783
 784                 amdgpu_bo_unref(&uf);
 785         }
 786 }
 787
 788 static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
 789 {
 790         struct amdgpu_ring *ring = to_amdgpu_ring(p->entity->rq->sched);
 791         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 792         struct amdgpu_device *adev = p->adev;
 793         struct amdgpu_vm *vm = &fpriv->vm;
 794         struct amdgpu_bo_list_entry *e;
 795         struct amdgpu_bo_va *bo_va;
 796         struct amdgpu_bo *bo;
 797         int r;
 798
 799         /* Only for UVD/VCE VM emulation */
 800         if (ring->funcs->parse_cs || ring->funcs->patch_cs_in_place) {
 801                 unsigned i, j;
 802
 803                 for (i = 0, j = 0; i < p->nchunks && j < p->job->num_ibs; i++) {
 804                         struct drm_amdgpu_cs_chunk_ib *chunk_ib;
 805                         struct amdgpu_bo_va_mapping *m;
 806                         struct amdgpu_bo *aobj = NULL;
 807                         struct amdgpu_cs_chunk *chunk;
 808                         uint64_t offset, va_start;
 809                         struct amdgpu_ib *ib;
 810                         uint8_t *kptr;
 811
 812                         chunk = &p->chunks[i];
 813                         ib = &p->job->ibs[j];
 814                         chunk_ib = chunk->kdata;
 815
 816                         if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
 817                                 continue;
 818
 819                         va_start = chunk_ib->va_start & AMDGPU_GMC_HOLE_MASK;
 820                         r = amdgpu_cs_find_mapping(p, va_start, &aobj, &m);
 821                         if (r) {
 822                                 DRM_ERROR("IB va_start is invalid\n");
 823                                 return r;
 824                         }
 825
 826                         if ((va_start + chunk_ib->ib_bytes) >
 827                             (m->last + 1) * AMDGPU_GPU_PAGE_SIZE) {
 828                                 DRM_ERROR("IB va_start+ib_bytes is invalid\n");
 829                                 return -EINVAL;
 830                         }
 831
 832                         /* the IB should be reserved at this point */
 833                         r = amdgpu_bo_kmap(aobj, (void **)&kptr);
 834                         if (r) {
 835                                 return r;
 836                         }
 837
 838                         offset = m->start * AMDGPU_GPU_PAGE_SIZE;
 839                         kptr += va_start - offset;
 840
 841                         if (ring->funcs->parse_cs) {
 842                                 memcpy(ib->ptr, kptr, chunk_ib->ib_bytes);
 843                                 amdgpu_bo_kunmap(aobj);
 844
 845                                 r = amdgpu_ring_parse_cs(ring, p, j);
 846                                 if (r)
 847                                         return r;
 848                         } else {
 849                                 ib->ptr = (uint32_t *)kptr;
 850                                 r = amdgpu_ring_patch_cs_in_place(ring, p, j);
 851                                 amdgpu_bo_kunmap(aobj);
 852                                 if (r)
 853                                         return r;
 854                         }
 855
 856                         j++;
 857                 }
 858         }
 859
 860         if (!p->job->vm)
 861                 return amdgpu_cs_sync_rings(p);
 862
 863
 864         r = amdgpu_vm_clear_freed(adev, vm, NULL);
 865         if (r)
 866                 return r;
 867
 868         r = amdgpu_vm_bo_update(adev, fpriv->prt_va, false);
 869         if (r)
 870                 return r;
 871
 872         r = amdgpu_sync_fence(adev, &p->job->sync,
 873                               fpriv->prt_va->last_pt_update, false);
 874         if (r)
 875                 return r;
 876
 877         if (amdgpu_mcbp || amdgpu_sriov_vf(adev)) {
 878                 struct dma_fence *f;
 879
 880                 bo_va = fpriv->csa_va;
 881                 BUG_ON(!bo_va);
 882                 r = amdgpu_vm_bo_update(adev, bo_va, false);
 883                 if (r)
 884                         return r;
 885
 886                 f = bo_va->last_pt_update;
 887                 r = amdgpu_sync_fence(adev, &p->job->sync, f, false);
 888                 if (r)
 889                         return r;
 890         }
 891
 892         amdgpu_bo_list_for_each_entry(e, p->bo_list) {
 893                 struct dma_fence *f;
 894
 895                 /* ignore duplicates */
 896                 bo = ttm_to_amdgpu_bo(e->tv.bo);
 897                 if (!bo)
 898                         continue;
 899
 900                 bo_va = e->bo_va;
 901                 if (bo_va == NULL)
 902                         continue;
 903
 904                 r = amdgpu_vm_bo_update(adev, bo_va, false);
 905                 if (r)
 906                         return r;
 907
 908                 f = bo_va->last_pt_update;
 909                 r = amdgpu_sync_fence(adev, &p->job->sync, f, false);
 910                 if (r)
 911                         return r;
 912         }
 913
 914         r = amdgpu_vm_handle_moved(adev, vm);
 915         if (r)
 916                 return r;
 917
 918         r = amdgpu_vm_update_directories(adev, vm);
 919         if (r)
 920                 return r;
 921
 922         r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_update, false);
 923         if (r)
 924                 return r;
 925
 926         p->job->vm_pd_addr = amdgpu_gmc_pd_addr(vm->root.base.bo);
 927
 928         if (amdgpu_vm_debug) {
 929                 /* Invalidate all BOs to test for userspace bugs */
 930                 amdgpu_bo_list_for_each_entry(e, p->bo_list) {
 931                         struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 932
 933                         /* ignore duplicates */
 934                         if (!bo)
 935                                 continue;
 936
 937                         amdgpu_vm_bo_invalidate(adev, bo, false);
 938                 }
 939         }
 940
 941         return amdgpu_cs_sync_rings(p);
 942 }
 943
 944 static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
 945                              struct amdgpu_cs_parser *parser)
 946 {
 947         struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
 948         struct amdgpu_vm *vm = &fpriv->vm;
 949         int r, ce_preempt = 0, de_preempt = 0;
 950         struct amdgpu_ring *ring;
 951         int i, j;
 952
 953         for (i = 0, j = 0; i < parser->nchunks && j < parser->job->num_ibs; i++) {
 954                 struct amdgpu_cs_chunk *chunk;
 955                 struct amdgpu_ib *ib;
 956                 struct drm_amdgpu_cs_chunk_ib *chunk_ib;
 957                 struct drm_sched_entity *entity;
 958
 959                 chunk = &parser->chunks[i];
 960                 ib = &parser->job->ibs[j];
 961                 chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata;
 962
 963                 if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
 964                         continue;
 965
 966                 if (chunk_ib->ip_type == AMDGPU_HW_IP_GFX &&
 967                     (amdgpu_mcbp || amdgpu_sriov_vf(adev))) {
 968                         if (chunk_ib->flags & AMDGPU_IB_FLAG_PREEMPT) {
 969                                 if (chunk_ib->flags & AMDGPU_IB_FLAG_CE)
 970                                         ce_preempt++;
 971                                 else
 972                                         de_preempt++;
 973                         }
 974
 975                         /* each GFX command submit allows 0 or 1 IB preemptible for CE & DE */
 976                         if (ce_preempt > 1 || de_preempt > 1)
 977                                 return -EINVAL;
 978                 }
 979
 980                 r = amdgpu_ctx_get_entity(parser->ctx, chunk_ib->ip_type,
 981                                           chunk_ib->ip_instance, chunk_ib->ring,
 982                                           &entity);
 983                 if (r)
 984                         return r;
 985
 986                 if (chunk_ib->flags & AMDGPU_IB_FLAG_PREAMBLE)
 987                         parser->job->preamble_status |=
 988                                 AMDGPU_PREAMBLE_IB_PRESENT;
 989
 990                 if (parser->entity && parser->entity != entity)
 991                         return -EINVAL;
 992
 993                 parser->entity = entity;
 994
 995                 ring = to_amdgpu_ring(entity->rq->sched);
 996                 r =  amdgpu_ib_get(adev, vm, ring->funcs->parse_cs ?
 997                                    chunk_ib->ib_bytes : 0, ib);
 998                 if (r) {
 999                         DRM_ERROR("Failed to get ib !\n");
1000                         return r;
1001                 }
1002
1003                 ib->gpu_addr = chunk_ib->va_start;
1004                 ib->length_dw = chunk_ib->ib_bytes / 4;
1005                 ib->flags = chunk_ib->flags;
1006
1007                 j++;
1008         }
1009
1010         /* MM engine doesn't support user fences */
1011         ring = to_amdgpu_ring(parser->entity->rq->sched);
1012         if (parser->job->uf_addr && ring->funcs->no_user_fence)
1013                 return -EINVAL;
1014
1015         return amdgpu_ctx_wait_prev_fence(parser->ctx, parser->entity);
1016 }
1017
1018 static int amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser *p,
1019                                        struct amdgpu_cs_chunk *chunk)
1020 {
1021         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
1022         unsigned num_deps;
1023         int i, r;
1024         struct drm_amdgpu_cs_chunk_dep *deps;
1025
1026         deps = (struct drm_amdgpu_cs_chunk_dep *)chunk->kdata;
1027         num_deps = chunk->length_dw * 4 /
1028                 sizeof(struct drm_amdgpu_cs_chunk_dep);
1029
1030         for (i = 0; i < num_deps; ++i) {
1031                 struct amdgpu_ctx *ctx;
1032                 struct drm_sched_entity *entity;
1033                 struct dma_fence *fence;
1034
1035                 ctx = amdgpu_ctx_get(fpriv, deps[i].ctx_id);
1036                 if (ctx == NULL)
1037                         return -EINVAL;
1038
1039                 r = amdgpu_ctx_get_entity(ctx, deps[i].ip_type,
1040                                           deps[i].ip_instance,
1041                                           deps[i].ring, &entity);
1042                 if (r) {
1043                         amdgpu_ctx_put(ctx);
1044                         return r;
1045                 }
1046
1047                 fence = amdgpu_ctx_get_fence(ctx, entity, deps[i].handle);
1048                 amdgpu_ctx_put(ctx);
1049
1050                 if (IS_ERR(fence))
1051                         return PTR_ERR(fence);
1052                 else if (!fence)
1053                         continue;
1054
1055                 if (chunk->chunk_id == AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES) {
1056                         struct drm_sched_fence *s_fence;
1057                         struct dma_fence *old = fence;
1058
1059                         s_fence = to_drm_sched_fence(fence);
1060                         fence = dma_fence_get(&s_fence->scheduled);
1061                         dma_fence_put(old);
1062                 }
1063
1064                 r = amdgpu_sync_fence(p->adev, &p->job->sync, fence, true);
1065                 dma_fence_put(fence);
1066                 if (r)
1067                         return r;
1068         }
1069         return 0;
1070 }
1071
1072 static int amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser *p,
1073                                                  uint32_t handle, u64 point,
1074                                                  u64 flags)
1075 {
1076         struct dma_fence *fence;
1077         int r;
1078
1079         r = drm_syncobj_find_fence(p->filp, handle, point, flags, &fence);
1080         if (r) {
1081                 DRM_ERROR("syncobj %u failed to find fence @ %llu (%d)!\n",
1082                           handle, point, r);
1083                 return r;
1084         }
1085
1086         r = amdgpu_sync_fence(p->adev, &p->job->sync, fence, true);
1087         dma_fence_put(fence);
1088
1089         return r;
1090 }
1091
1092 static int amdgpu_cs_process_syncobj_in_dep(struct amdgpu_cs_parser *p,
1093                                             struct amdgpu_cs_chunk *chunk)
1094 {
1095         struct drm_amdgpu_cs_chunk_sem *deps;
1096         unsigned num_deps;
1097         int i, r;
1098
1099         deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1100         num_deps = chunk->length_dw * 4 /
1101                 sizeof(struct drm_amdgpu_cs_chunk_sem);
1102         for (i = 0; i < num_deps; ++i) {
1103                 r = amdgpu_syncobj_lookup_and_add_to_sync(p, deps[i].handle,
1104                                                           0, 0);
1105                 if (r)
1106                         return r;
1107         }
1108
1109         return 0;
1110 }
1111
1112
1113 static int amdgpu_cs_process_syncobj_timeline_in_dep(struct amdgpu_cs_parser *p,
1114                                                      struct amdgpu_cs_chunk *chunk)
1115 {
1116         struct drm_amdgpu_cs_chunk_syncobj *syncobj_deps;
1117         unsigned num_deps;
1118         int i, r;
1119
1120         syncobj_deps = (struct drm_amdgpu_cs_chunk_syncobj *)chunk->kdata;
1121         num_deps = chunk->length_dw * 4 /
1122                 sizeof(struct drm_amdgpu_cs_chunk_syncobj);
1123         for (i = 0; i < num_deps; ++i) {
1124                 r = amdgpu_syncobj_lookup_and_add_to_sync(p,
1125                                                           syncobj_deps[i].handle,
1126                                                           syncobj_deps[i].point,
1127                                                           syncobj_deps[i].flags);
1128                 if (r)
1129                         return r;
1130         }
1131
1132         return 0;
1133 }
1134
1135 static int amdgpu_cs_process_syncobj_out_dep(struct amdgpu_cs_parser *p,
1136                                              struct amdgpu_cs_chunk *chunk)
1137 {
1138         struct drm_amdgpu_cs_chunk_sem *deps;
1139         unsigned num_deps;
1140         int i;
1141
1142         deps = (struct drm_amdgpu_cs_chunk_sem *)chunk->kdata;
1143         num_deps = chunk->length_dw * 4 /
1144                 sizeof(struct drm_amdgpu_cs_chunk_sem);
1145
1146         p->post_deps = kmalloc_array(num_deps, sizeof(*p->post_deps),
1147                                      GFP_KERNEL);
1148         p->num_post_deps = 0;
1149
1150         if (!p->post_deps)
1151                 return -ENOMEM;
1152
1153
1154         for (i = 0; i < num_deps; ++i) {
1155                 p->post_deps[i].syncobj =
1156                         drm_syncobj_find(p->filp, deps[i].handle);
1157                 if (!p->post_deps[i].syncobj)
1158                         return -EINVAL;
1159                 p->post_deps[i].chain = NULL;
1160                 p->post_deps[i].point = 0;
1161                 p->num_post_deps++;
1162         }
1163
1164         return 0;
1165 }
1166
1167
1168 static int amdgpu_cs_process_syncobj_timeline_out_dep(struct amdgpu_cs_parser *p,
1169                                                       struct amdgpu_cs_chunk
1170                                                       *chunk)
1171 {
1172         struct drm_amdgpu_cs_chunk_syncobj *syncobj_deps;
1173         unsigned num_deps;
1174         int i;
1175
1176         syncobj_deps = (struct drm_amdgpu_cs_chunk_syncobj *)chunk->kdata;
1177         num_deps = chunk->length_dw * 4 /
1178                 sizeof(struct drm_amdgpu_cs_chunk_syncobj);
1179
1180         p->post_deps = kmalloc_array(num_deps, sizeof(*p->post_deps),
1181                                      GFP_KERNEL);
1182         p->num_post_deps = 0;
1183
1184         if (!p->post_deps)
1185                 return -ENOMEM;
1186
1187         for (i = 0; i < num_deps; ++i) {
1188                 struct amdgpu_cs_post_dep *dep = &p->post_deps[i];
1189
1190                 dep->chain = NULL;
1191                 if (syncobj_deps[i].point) {
1192                         dep->chain = kmalloc(sizeof(*dep->chain), GFP_KERNEL);
1193                         if (!dep->chain)
1194                                 return -ENOMEM;
1195                 }
1196
1197                 dep->syncobj = drm_syncobj_find(p->filp,
1198                                                 syncobj_deps[i].handle);
1199                 if (!dep->syncobj) {
1200                         kfree(dep->chain);
1201                         return -EINVAL;
1202                 }
1203                 dep->point = syncobj_deps[i].point;
1204                 p->num_post_deps++;
1205         }
1206
1207         return 0;
1208 }
1209
1210 static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
1211                                   struct amdgpu_cs_parser *p)
1212 {
1213         int i, r;
1214
1215         for (i = 0; i < p->nchunks; ++i) {
1216                 struct amdgpu_cs_chunk *chunk;
1217
1218                 chunk = &p->chunks[i];
1219
1220                 switch (chunk->chunk_id) {
1221                 case AMDGPU_CHUNK_ID_DEPENDENCIES:
1222                 case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
1223                         r = amdgpu_cs_process_fence_dep(p, chunk);
1224                         if (r)
1225                                 return r;
1226                         break;
1227                 case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
1228                         r = amdgpu_cs_process_syncobj_in_dep(p, chunk);
1229                         if (r)
1230                                 return r;
1231                         break;
1232                 case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
1233                         r = amdgpu_cs_process_syncobj_out_dep(p, chunk);
1234                         if (r)
1235                                 return r;
1236                         break;
1237                 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT:
1238                         r = amdgpu_cs_process_syncobj_timeline_in_dep(p, chunk);
1239                         if (r)
1240                                 return r;
1241                         break;
1242                 case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL:
1243                         r = amdgpu_cs_process_syncobj_timeline_out_dep(p, chunk);
1244                         if (r)
1245                                 return r;
1246                         break;
1247                 }
1248         }
1249
1250         return 0;
1251 }
1252
1253 static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p)
1254 {
1255         int i;
1256
1257         for (i = 0; i < p->num_post_deps; ++i) {
1258                 if (p->post_deps[i].chain && p->post_deps[i].point) {
1259                         drm_syncobj_add_point(p->post_deps[i].syncobj,
1260                                               p->post_deps[i].chain,
1261                                               p->fence, p->post_deps[i].point);
1262                         p->post_deps[i].chain = NULL;
1263                 } else {
1264                         drm_syncobj_replace_fence(p->post_deps[i].syncobj,
1265                                                   p->fence);
1266                 }
1267         }
1268 }
1269
1270 static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
1271                             union drm_amdgpu_cs *cs)
1272 {
1273         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
1274         struct drm_sched_entity *entity = p->entity;
1275         enum drm_sched_priority priority;
1276         struct amdgpu_ring *ring;
1277         struct amdgpu_bo_list_entry *e;
1278         struct amdgpu_job *job;
1279         uint64_t seq;
1280         int r;
1281
1282         job = p->job;
1283         p->job = NULL;
1284
1285         r = drm_sched_job_init(&job->base, entity, p->filp);
1286         if (r)
1287                 goto error_unlock;
1288
1289         /* No memory allocation is allowed while holding the mn lock.
1290          * p->mn is hold until amdgpu_cs_submit is finished and fence is added
1291          * to BOs.
1292          */
1293         amdgpu_mn_lock(p->mn);
1294
1295         /* If userptr are invalidated after amdgpu_cs_parser_bos(), return
1296          * -EAGAIN, drmIoctl in libdrm will restart the amdgpu_cs_ioctl.
1297          */
1298         amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
1299                 struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
1300
1301                 r |= !amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm);
1302         }
1303         if (r) {
1304                 r = -EAGAIN;
1305                 goto error_abort;
1306         }
1307
1308         job->owner = p->filp;
1309         p->fence = dma_fence_get(&job->base.s_fence->finished);
1310
1311         amdgpu_ctx_add_fence(p->ctx, entity, p->fence, &seq);
1312         amdgpu_cs_post_dependencies(p);
1313
1314         if ((job->preamble_status & AMDGPU_PREAMBLE_IB_PRESENT) &&
1315             !p->ctx->preamble_presented) {
1316                 job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
1317                 p->ctx->preamble_presented = true;
1318         }
1319
1320         cs->out.handle = seq;
1321         job->uf_sequence = seq;
1322
1323         amdgpu_job_free_resources(job);
1324
1325         trace_amdgpu_cs_ioctl(job);
1326         amdgpu_vm_bo_trace_cs(&fpriv->vm, &p->ticket);
1327         priority = job->base.s_priority;
1328         drm_sched_entity_push_job(&job->base, entity);
1329
1330         ring = to_amdgpu_ring(entity->rq->sched);
1331         amdgpu_ring_priority_get(ring, priority);
1332
1333         amdgpu_vm_move_to_lru_tail(p->adev, &fpriv->vm);
1334
1335         ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence);
1336         amdgpu_mn_unlock(p->mn);
1337
1338         return 0;
1339
1340 error_abort:
1341         drm_sched_job_cleanup(&job->base);
1342         amdgpu_mn_unlock(p->mn);
1343
1344 error_unlock:
1345         amdgpu_job_free(job);
1346         return r;
1347 }
1348
1349 int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
1350 {
1351         struct amdgpu_device *adev = dev->dev_private;
1352         union drm_amdgpu_cs *cs = data;
1353         struct amdgpu_cs_parser parser = {};
1354         bool reserved_buffers = false;
1355         int i, r;
1356
1357         if (!adev->accel_working)
1358                 return -EBUSY;
1359
1360         parser.adev = adev;
1361         parser.filp = filp;
1362
1363         r = amdgpu_cs_parser_init(&parser, data);
1364         if (r) {
1365                 DRM_ERROR("Failed to initialize parser %d!\n", r);
1366                 goto out;
1367         }
1368
1369         r = amdgpu_cs_ib_fill(adev, &parser);
1370         if (r)
1371                 goto out;
1372
1373         r = amdgpu_cs_dependencies(adev, &parser);
1374         if (r) {
1375                 DRM_ERROR("Failed in the dependencies handling %d!\n", r);
1376                 goto out;
1377         }
1378
1379         r = amdgpu_cs_parser_bos(&parser, data);
1380         if (r) {
1381                 if (r == -ENOMEM)
1382                         DRM_ERROR("Not enough memory for command submission!\n");
1383                 else if (r != -ERESTARTSYS && r != -EAGAIN)
1384                         DRM_ERROR("Failed to process the buffer list %d!\n", r);
1385                 goto out;
1386         }
1387
1388         reserved_buffers = true;
1389
1390         for (i = 0; i < parser.job->num_ibs; i++)
1391                 trace_amdgpu_cs(&parser, i);
1392
1393         r = amdgpu_cs_vm_handling(&parser);
1394         if (r)
1395                 goto out;
1396
1397         r = amdgpu_cs_submit(&parser, cs);
1398
1399 out:
1400         amdgpu_cs_parser_fini(&parser, r, reserved_buffers);
1401
1402         return r;
1403 }
1404
1405 /**
1406  * amdgpu_cs_wait_ioctl - wait for a command submission to finish
1407  *
1408  * @dev: drm device
1409  * @data: data from userspace
1410  * @filp: file private
1411  *
1412  * Wait for the command submission identified by handle to finish.
1413  */
1414 int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
1415                          struct drm_file *filp)
1416 {
1417         union drm_amdgpu_wait_cs *wait = data;
1418         unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
1419         struct drm_sched_entity *entity;
1420         struct amdgpu_ctx *ctx;
1421         struct dma_fence *fence;
1422         long r;
1423
1424         ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
1425         if (ctx == NULL)
1426                 return -EINVAL;
1427
1428         r = amdgpu_ctx_get_entity(ctx, wait->in.ip_type, wait->in.ip_instance,
1429                                   wait->in.ring, &entity);
1430         if (r) {
1431                 amdgpu_ctx_put(ctx);
1432                 return r;
1433         }
1434
1435         fence = amdgpu_ctx_get_fence(ctx, entity, wait->in.handle);
1436         if (IS_ERR(fence))
1437                 r = PTR_ERR(fence);
1438         else if (fence) {
1439                 r = dma_fence_wait_timeout(fence, true, timeout);
1440                 if (r > 0 && fence->error)
1441                         r = fence->error;
1442                 dma_fence_put(fence);
1443         } else
1444                 r = 1;
1445
1446         amdgpu_ctx_put(ctx);
1447         if (r < 0)
1448                 return r;
1449
1450         memset(wait, 0, sizeof(*wait));
1451         wait->out.status = (r == 0);
1452
1453         return 0;
1454 }
1455
1456 /**
1457  * amdgpu_cs_get_fence - helper to get fence from drm_amdgpu_fence
1458  *
1459  * @adev: amdgpu device
1460  * @filp: file private
1461  * @user: drm_amdgpu_fence copied from user space
1462  */
1463 static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev,
1464                                              struct drm_file *filp,
1465                                              struct drm_amdgpu_fence *user)
1466 {
1467         struct drm_sched_entity *entity;
1468         struct amdgpu_ctx *ctx;
1469         struct dma_fence *fence;
1470         int r;
1471
1472         ctx = amdgpu_ctx_get(filp->driver_priv, user->ctx_id);
1473         if (ctx == NULL)
1474                 return ERR_PTR(-EINVAL);
1475
1476         r = amdgpu_ctx_get_entity(ctx, user->ip_type, user->ip_instance,
1477                                   user->ring, &entity);
1478         if (r) {
1479                 amdgpu_ctx_put(ctx);
1480                 return ERR_PTR(r);
1481         }
1482
1483         fence = amdgpu_ctx_get_fence(ctx, entity, user->seq_no);
1484         amdgpu_ctx_put(ctx);
1485
1486         return fence;
1487 }
1488
1489 int amdgpu_cs_fence_to_handle_ioctl(struct drm_device *dev, void *data,
1490                                     struct drm_file *filp)
1491 {
1492         struct amdgpu_device *adev = dev->dev_private;
1493         union drm_amdgpu_fence_to_handle *info = data;
1494         struct dma_fence *fence;
1495         struct drm_syncobj *syncobj;
1496         struct sync_file *sync_file;
1497         int fd, r;
1498
1499         fence = amdgpu_cs_get_fence(adev, filp, &info->in.fence);
1500         if (IS_ERR(fence))
1501                 return PTR_ERR(fence);
1502
1503         if (!fence)
1504                 fence = dma_fence_get_stub();
1505
1506         switch (info->in.what) {
1507         case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ:
1508                 r = drm_syncobj_create(&syncobj, 0, fence);
1509                 dma_fence_put(fence);
1510                 if (r)
1511                         return r;
1512                 r = drm_syncobj_get_handle(filp, syncobj, &info->out.handle);
1513                 drm_syncobj_put(syncobj);
1514                 return r;
1515
1516         case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ_FD:
1517                 r = drm_syncobj_create(&syncobj, 0, fence);
1518                 dma_fence_put(fence);
1519                 if (r)
1520                         return r;
1521                 r = drm_syncobj_get_fd(syncobj, (int*)&info->out.handle);
1522                 drm_syncobj_put(syncobj);
1523                 return r;
1524
1525         case AMDGPU_FENCE_TO_HANDLE_GET_SYNC_FILE_FD:
1526                 fd = get_unused_fd_flags(O_CLOEXEC);
1527                 if (fd < 0) {
1528                         dma_fence_put(fence);
1529                         return fd;
1530                 }
1531
1532                 sync_file = sync_file_create(fence);
1533                 dma_fence_put(fence);
1534                 if (!sync_file) {
1535                         put_unused_fd(fd);
1536                         return -ENOMEM;
1537                 }
1538
1539                 fd_install(fd, sync_file->file);
1540                 info->out.handle = fd;
1541                 return 0;
1542
1543         default:
1544                 return -EINVAL;
1545         }
1546 }
1547
1548 /**
1549  * amdgpu_cs_wait_all_fence - wait on all fences to signal
1550  *
1551  * @adev: amdgpu device
1552  * @filp: file private
1553  * @wait: wait parameters
1554  * @fences: array of drm_amdgpu_fence
1555  */
1556 static int amdgpu_cs_wait_all_fences(struct amdgpu_device *adev,
1557                                      struct drm_file *filp,
1558                                      union drm_amdgpu_wait_fences *wait,
1559                                      struct drm_amdgpu_fence *fences)
1560 {
1561         uint32_t fence_count = wait->in.fence_count;
1562         unsigned int i;
1563         long r = 1;
1564
1565         for (i = 0; i < fence_count; i++) {
1566                 struct dma_fence *fence;
1567                 unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1568
1569                 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1570                 if (IS_ERR(fence))
1571                         return PTR_ERR(fence);
1572                 else if (!fence)
1573                         continue;
1574
1575                 r = dma_fence_wait_timeout(fence, true, timeout);
1576                 dma_fence_put(fence);
1577                 if (r < 0)
1578                         return r;
1579
1580                 if (r == 0)
1581                         break;
1582
1583                 if (fence->error)
1584                         return fence->error;
1585         }
1586
1587         memset(wait, 0, sizeof(*wait));
1588         wait->out.status = (r > 0);
1589
1590         return 0;
1591 }
1592
1593 /**
1594  * amdgpu_cs_wait_any_fence - wait on any fence to signal
1595  *
1596  * @adev: amdgpu device
1597  * @filp: file private
1598  * @wait: wait parameters
1599  * @fences: array of drm_amdgpu_fence
1600  */
1601 static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev,
1602                                     struct drm_file *filp,
1603                                     union drm_amdgpu_wait_fences *wait,
1604                                     struct drm_amdgpu_fence *fences)
1605 {
1606         unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
1607         uint32_t fence_count = wait->in.fence_count;
1608         uint32_t first = ~0;
1609         struct dma_fence **array;
1610         unsigned int i;
1611         long r;
1612
1613         /* Prepare the fence array */
1614         array = kcalloc(fence_count, sizeof(struct dma_fence *), GFP_KERNEL);
1615
1616         if (array == NULL)
1617                 return -ENOMEM;
1618
1619         for (i = 0; i < fence_count; i++) {
1620                 struct dma_fence *fence;
1621
1622                 fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
1623                 if (IS_ERR(fence)) {
1624                         r = PTR_ERR(fence);
1625                         goto err_free_fence_array;
1626                 } else if (fence) {
1627                         array[i] = fence;
1628                 } else { /* NULL, the fence has been already signaled */
1629                         r = 1;
1630                         first = i;
1631                         goto out;
1632                 }
1633         }
1634
1635         r = dma_fence_wait_any_timeout(array, fence_count, true, timeout,
1636                                        &first);
1637         if (r < 0)
1638                 goto err_free_fence_array;
1639
1640 out:
1641         memset(wait, 0, sizeof(*wait));
1642         wait->out.status = (r > 0);
1643         wait->out.first_signaled = first;
1644
1645         if (first < fence_count && array[first])
1646                 r = array[first]->error;
1647         else
1648                 r = 0;
1649
1650 err_free_fence_array:
1651         for (i = 0; i < fence_count; i++)
1652                 dma_fence_put(array[i]);
1653         kfree(array);
1654
1655         return r;
1656 }
1657
1658 /**
1659  * amdgpu_cs_wait_fences_ioctl - wait for multiple command submissions to finish
1660  *
1661  * @dev: drm device
1662  * @data: data from userspace
1663  * @filp: file private
1664  */
1665 int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
1666                                 struct drm_file *filp)
1667 {
1668         struct amdgpu_device *adev = dev->dev_private;
1669         union drm_amdgpu_wait_fences *wait = data;
1670         uint32_t fence_count = wait->in.fence_count;
1671         struct drm_amdgpu_fence *fences_user;
1672         struct drm_amdgpu_fence *fences;
1673         int r;
1674
1675         /* Get the fences from userspace */
1676         fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
1677                         GFP_KERNEL);
1678         if (fences == NULL)
1679                 return -ENOMEM;
1680
1681         fences_user = u64_to_user_ptr(wait->in.fences);
1682         if (copy_from_user(fences, fences_user,
1683                 sizeof(struct drm_amdgpu_fence) * fence_count)) {
1684                 r = -EFAULT;
1685                 goto err_free_fences;
1686         }
1687
1688         if (wait->in.wait_all)
1689                 r = amdgpu_cs_wait_all_fences(adev, filp, wait, fences);
1690         else
1691                 r = amdgpu_cs_wait_any_fence(adev, filp, wait, fences);
1692
1693 err_free_fences:
1694         kfree(fences);
1695
1696         return r;
1697 }
1698
1699 /**
1700  * amdgpu_cs_find_bo_va - find bo_va for VM address
1701  *
1702  * @parser: command submission parser context
1703  * @addr: VM address
1704  * @bo: resulting BO of the mapping found
1705  *
1706  * Search the buffer objects in the command submission context for a certain
1707  * virtual memory address. Returns allocation structure when found, NULL
1708  * otherwise.
1709  */
1710 int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
1711                            uint64_t addr, struct amdgpu_bo **bo,
1712                            struct amdgpu_bo_va_mapping **map)
1713 {
1714         struct amdgpu_fpriv *fpriv = parser->filp->driver_priv;
1715         struct ttm_operation_ctx ctx = { false, false };
1716         struct amdgpu_vm *vm = &fpriv->vm;
1717         struct amdgpu_bo_va_mapping *mapping;
1718         int r;
1719
1720         addr /= AMDGPU_GPU_PAGE_SIZE;
1721
1722         mapping = amdgpu_vm_bo_lookup_mapping(vm, addr);
1723         if (!mapping || !mapping->bo_va || !mapping->bo_va->base.bo)
1724                 return -EINVAL;
1725
1726         *bo = mapping->bo_va->base.bo;
1727         *map = mapping;
1728
1729         /* Double check that the BO is reserved by this CS */
1730         if (READ_ONCE((*bo)->tbo.resv->lock.ctx) != &parser->ticket)
1731                 return -EINVAL;
1732
1733         if (!((*bo)->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)) {
1734                 (*bo)->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
1735                 amdgpu_bo_placement_from_domain(*bo, (*bo)->allowed_domains);
1736                 r = ttm_bo_validate(&(*bo)->tbo, &(*bo)->placement, &ctx);
1737                 if (r)
1738                         return r;
1739         }
1740
1741         return amdgpu_ttm_alloc_gart(&(*bo)->tbo);
1742 }