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

   1 /*
   2  * Copyright 2009 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
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  16  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  17  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  18  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  19  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  *
  21  * The above copyright notice and this permission notice (including the
  22  * next paragraph) shall be included in all copies or substantial portions
  23  * of the Software.
  24  *
  25  */
  26 /*
  27  * Authors:
  28  *    Jerome Glisse <glisse@freedesktop.org>
  29  *    Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
  30  *    Dave Airlie
  31  */
  32 #include <linux/list.h>
  33 #include <linux/slab.h>
  34 #include <drm/drmP.h>
  35 #include <drm/amdgpu_drm.h>
  36 #include "amdgpu.h"
  37 #include "amdgpu_trace.h"
  38
  39
  40 int amdgpu_ttm_init(struct amdgpu_device *adev);
  41 void amdgpu_ttm_fini(struct amdgpu_device *adev);
  42
  43 static u64 amdgpu_get_vis_part_size(struct amdgpu_device *adev,
  44                                                 struct ttm_mem_reg *mem)
  45 {
  46         u64 ret = 0;
  47         if (mem->start << PAGE_SHIFT < adev->mc.visible_vram_size) {
  48                 ret = (u64)((mem->start << PAGE_SHIFT) + mem->size) >
  49                            adev->mc.visible_vram_size ?
  50                            adev->mc.visible_vram_size - (mem->start << PAGE_SHIFT) :
  51                            mem->size;
  52         }
  53         return ret;
  54 }
  55
  56 static void amdgpu_update_memory_usage(struct amdgpu_device *adev,
  57                        struct ttm_mem_reg *old_mem,
  58                        struct ttm_mem_reg *new_mem)
  59 {
  60         u64 vis_size;
  61         if (!adev)
  62                 return;
  63
  64         if (new_mem) {
  65                 switch (new_mem->mem_type) {
  66                 case TTM_PL_TT:
  67                         atomic64_add(new_mem->size, &adev->gtt_usage);
  68                         break;
  69                 case TTM_PL_VRAM:
  70                         atomic64_add(new_mem->size, &adev->vram_usage);
  71                         vis_size = amdgpu_get_vis_part_size(adev, new_mem);
  72                         atomic64_add(vis_size, &adev->vram_vis_usage);
  73                         break;
  74                 }
  75         }
  76
  77         if (old_mem) {
  78                 switch (old_mem->mem_type) {
  79                 case TTM_PL_TT:
  80                         atomic64_sub(old_mem->size, &adev->gtt_usage);
  81                         break;
  82                 case TTM_PL_VRAM:
  83                         atomic64_sub(old_mem->size, &adev->vram_usage);
  84                         vis_size = amdgpu_get_vis_part_size(adev, old_mem);
  85                         atomic64_sub(vis_size, &adev->vram_vis_usage);
  86                         break;
  87                 }
  88         }
  89 }
  90
  91 static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
  92 {
  93         struct amdgpu_bo *bo;
  94
  95         bo = container_of(tbo, struct amdgpu_bo, tbo);
  96
  97         amdgpu_update_memory_usage(bo->adev, &bo->tbo.mem, NULL);
  98
  99         mutex_lock(&bo->adev->gem.mutex);
 100         list_del_init(&bo->list);
 101         mutex_unlock(&bo->adev->gem.mutex);
 102         drm_gem_object_release(&bo->gem_base);
 103         kfree(bo->metadata);
 104         kfree(bo);
 105 }
 106
 107 bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo)
 108 {
 109         if (bo->destroy == &amdgpu_ttm_bo_destroy)
 110                 return true;
 111         return false;
 112 }
 113
 114 static void amdgpu_ttm_placement_init(struct amdgpu_device *adev,
 115                                       struct ttm_placement *placement,
 116                                       struct ttm_place *placements,
 117                                       u32 domain, u64 flags)
 118 {
 119         u32 c = 0, i;
 120
 121         placement->placement = placements;
 122         placement->busy_placement = placements;
 123
 124         if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
 125                 if (flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS &&
 126                         adev->mc.visible_vram_size < adev->mc.real_vram_size) {
 127                         placements[c].fpfn =
 128                                 adev->mc.visible_vram_size >> PAGE_SHIFT;
 129                         placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
 130                                 TTM_PL_FLAG_VRAM | TTM_PL_FLAG_TOPDOWN;
 131                 }
 132                 placements[c].fpfn = 0;
 133                 placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
 134                         TTM_PL_FLAG_VRAM;
 135                 if (!(flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED))
 136                         placements[c - 1].flags |= TTM_PL_FLAG_TOPDOWN;
 137         }
 138
 139         if (domain & AMDGPU_GEM_DOMAIN_GTT) {
 140                 if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) {
 141                         placements[c].fpfn = 0;
 142                         placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_TT |
 143                                 TTM_PL_FLAG_UNCACHED;
 144                 } else {
 145                         placements[c].fpfn = 0;
 146                         placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_TT;
 147                 }
 148         }
 149
 150         if (domain & AMDGPU_GEM_DOMAIN_CPU) {
 151                 if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) {
 152                         placements[c].fpfn = 0;
 153                         placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_SYSTEM |
 154                                 TTM_PL_FLAG_UNCACHED;
 155                 } else {
 156                         placements[c].fpfn = 0;
 157                         placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
 158                 }
 159         }
 160
 161         if (domain & AMDGPU_GEM_DOMAIN_GDS) {
 162                 placements[c].fpfn = 0;
 163                 placements[c++].flags = TTM_PL_FLAG_UNCACHED |
 164                         AMDGPU_PL_FLAG_GDS;
 165         }
 166         if (domain & AMDGPU_GEM_DOMAIN_GWS) {
 167                 placements[c].fpfn = 0;
 168                 placements[c++].flags = TTM_PL_FLAG_UNCACHED |
 169                         AMDGPU_PL_FLAG_GWS;
 170         }
 171         if (domain & AMDGPU_GEM_DOMAIN_OA) {
 172                 placements[c].fpfn = 0;
 173                 placements[c++].flags = TTM_PL_FLAG_UNCACHED |
 174                         AMDGPU_PL_FLAG_OA;
 175         }
 176
 177         if (!c) {
 178                 placements[c].fpfn = 0;
 179                 placements[c++].flags = TTM_PL_MASK_CACHING |
 180                         TTM_PL_FLAG_SYSTEM;
 181         }
 182         placement->num_placement = c;
 183         placement->num_busy_placement = c;
 184
 185         for (i = 0; i < c; i++) {
 186                 if ((flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) &&
 187                         (placements[i].flags & TTM_PL_FLAG_VRAM) &&
 188                         !placements[i].fpfn)
 189                         placements[i].lpfn =
 190                                 adev->mc.visible_vram_size >> PAGE_SHIFT;
 191                 else
 192                         placements[i].lpfn = 0;
 193         }
 194 }
 195
 196 void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *rbo, u32 domain)
 197 {
 198         amdgpu_ttm_placement_init(rbo->adev, &rbo->placement,
 199                                   rbo->placements, domain, rbo->flags);
 200 }
 201
 202 static void amdgpu_fill_placement_to_bo(struct amdgpu_bo *bo,
 203                                         struct ttm_placement *placement)
 204 {
 205         BUG_ON(placement->num_placement > (AMDGPU_GEM_DOMAIN_MAX + 1));
 206
 207         memcpy(bo->placements, placement->placement,
 208                placement->num_placement * sizeof(struct ttm_place));
 209         bo->placement.num_placement = placement->num_placement;
 210         bo->placement.num_busy_placement = placement->num_busy_placement;
 211         bo->placement.placement = bo->placements;
 212         bo->placement.busy_placement = bo->placements;
 213 }
 214
 215 int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
 216                                 unsigned long size, int byte_align,
 217                                 bool kernel, u32 domain, u64 flags,
 218                                 struct sg_table *sg,
 219                                 struct ttm_placement *placement,
 220                                 struct reservation_object *resv,
 221                                 struct amdgpu_bo **bo_ptr)
 222 {
 223         struct amdgpu_bo *bo;
 224         enum ttm_bo_type type;
 225         unsigned long page_align;
 226         size_t acc_size;
 227         int r;
 228
 229         page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
 230         size = ALIGN(size, PAGE_SIZE);
 231
 232         if (kernel) {
 233                 type = ttm_bo_type_kernel;
 234         } else if (sg) {
 235                 type = ttm_bo_type_sg;
 236         } else {
 237                 type = ttm_bo_type_device;
 238         }
 239         *bo_ptr = NULL;
 240
 241         acc_size = ttm_bo_dma_acc_size(&adev->mman.bdev, size,
 242                                        sizeof(struct amdgpu_bo));
 243
 244         bo = kzalloc(sizeof(struct amdgpu_bo), GFP_KERNEL);
 245         if (bo == NULL)
 246                 return -ENOMEM;
 247         r = drm_gem_object_init(adev->ddev, &bo->gem_base, size);
 248         if (unlikely(r)) {
 249                 kfree(bo);
 250                 return r;
 251         }
 252         bo->adev = adev;
 253         INIT_LIST_HEAD(&bo->list);
 254         INIT_LIST_HEAD(&bo->va);
 255         bo->initial_domain = domain & (AMDGPU_GEM_DOMAIN_VRAM |
 256                                        AMDGPU_GEM_DOMAIN_GTT |
 257                                        AMDGPU_GEM_DOMAIN_CPU |
 258                                        AMDGPU_GEM_DOMAIN_GDS |
 259                                        AMDGPU_GEM_DOMAIN_GWS |
 260                                        AMDGPU_GEM_DOMAIN_OA);
 261
 262         bo->flags = flags;
 263         amdgpu_fill_placement_to_bo(bo, placement);
 264         /* Kernel allocation are uninterruptible */
 265         r = ttm_bo_init(&adev->mman.bdev, &bo->tbo, size, type,
 266                         &bo->placement, page_align, !kernel, NULL,
 267                         acc_size, sg, resv, &amdgpu_ttm_bo_destroy);
 268         if (unlikely(r != 0)) {
 269                 return r;
 270         }
 271         *bo_ptr = bo;
 272
 273         trace_amdgpu_bo_create(bo);
 274
 275         return 0;
 276 }
 277
 278 int amdgpu_bo_create(struct amdgpu_device *adev,
 279                      unsigned long size, int byte_align,
 280                      bool kernel, u32 domain, u64 flags,
 281                      struct sg_table *sg,
 282                      struct reservation_object *resv,
 283                      struct amdgpu_bo **bo_ptr)
 284 {
 285         struct ttm_placement placement = {0};
 286         struct ttm_place placements[AMDGPU_GEM_DOMAIN_MAX + 1];
 287
 288         memset(&placements, 0,
 289                (AMDGPU_GEM_DOMAIN_MAX + 1) * sizeof(struct ttm_place));
 290
 291         amdgpu_ttm_placement_init(adev, &placement,
 292                                   placements, domain, flags);
 293
 294         return amdgpu_bo_create_restricted(adev, size, byte_align, kernel,
 295                                            domain, flags, sg, &placement,
 296                                            resv, bo_ptr);
 297 }
 298
 299 int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
 300 {
 301         bool is_iomem;
 302         int r;
 303
 304         if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 305                 return -EPERM;
 306
 307         if (bo->kptr) {
 308                 if (ptr) {
 309                         *ptr = bo->kptr;
 310                 }
 311                 return 0;
 312         }
 313         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 314         if (r) {
 315                 return r;
 316         }
 317         bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 318         if (ptr) {
 319                 *ptr = bo->kptr;
 320         }
 321         return 0;
 322 }
 323
 324 void amdgpu_bo_kunmap(struct amdgpu_bo *bo)
 325 {
 326         if (bo->kptr == NULL)
 327                 return;
 328         bo->kptr = NULL;
 329         ttm_bo_kunmap(&bo->kmap);
 330 }
 331
 332 struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo)
 333 {
 334         if (bo == NULL)
 335                 return NULL;
 336
 337         ttm_bo_reference(&bo->tbo);
 338         return bo;
 339 }
 340
 341 void amdgpu_bo_unref(struct amdgpu_bo **bo)
 342 {
 343         struct ttm_buffer_object *tbo;
 344
 345         if ((*bo) == NULL)
 346                 return;
 347
 348         tbo = &((*bo)->tbo);
 349         ttm_bo_unref(&tbo);
 350         if (tbo == NULL)
 351                 *bo = NULL;
 352 }
 353
 354 int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
 355                              u64 min_offset, u64 max_offset,
 356                              u64 *gpu_addr)
 357 {
 358         int r, i;
 359         unsigned fpfn, lpfn;
 360
 361         if (amdgpu_ttm_tt_has_userptr(bo->tbo.ttm))
 362                 return -EPERM;
 363
 364         if (WARN_ON_ONCE(min_offset > max_offset))
 365                 return -EINVAL;
 366
 367         if (bo->pin_count) {
 368                 bo->pin_count++;
 369                 if (gpu_addr)
 370                         *gpu_addr = amdgpu_bo_gpu_offset(bo);
 371
 372                 if (max_offset != 0) {
 373                         u64 domain_start;
 374                         if (domain == AMDGPU_GEM_DOMAIN_VRAM)
 375                                 domain_start = bo->adev->mc.vram_start;
 376                         else
 377                                 domain_start = bo->adev->mc.gtt_start;
 378                         WARN_ON_ONCE(max_offset <
 379                                      (amdgpu_bo_gpu_offset(bo) - domain_start));
 380                 }
 381
 382                 return 0;
 383         }
 384         amdgpu_ttm_placement_from_domain(bo, domain);
 385         for (i = 0; i < bo->placement.num_placement; i++) {
 386                 /* force to pin into visible video ram */
 387                 if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 388                     !(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS) &&
 389                     (!max_offset || max_offset > bo->adev->mc.visible_vram_size)) {
 390                         if (WARN_ON_ONCE(min_offset >
 391                                          bo->adev->mc.visible_vram_size))
 392                                 return -EINVAL;
 393                         fpfn = min_offset >> PAGE_SHIFT;
 394                         lpfn = bo->adev->mc.visible_vram_size >> PAGE_SHIFT;
 395                 } else {
 396                         fpfn = min_offset >> PAGE_SHIFT;
 397                         lpfn = max_offset >> PAGE_SHIFT;
 398                 }
 399                 if (fpfn > bo->placements[i].fpfn)
 400                         bo->placements[i].fpfn = fpfn;
 401                 if (lpfn && lpfn < bo->placements[i].lpfn)
 402                         bo->placements[i].lpfn = lpfn;
 403                 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
 404         }
 405
 406         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 407         if (likely(r == 0)) {
 408                 bo->pin_count = 1;
 409                 if (gpu_addr != NULL)
 410                         *gpu_addr = amdgpu_bo_gpu_offset(bo);
 411                 if (domain == AMDGPU_GEM_DOMAIN_VRAM)
 412                         bo->adev->vram_pin_size += amdgpu_bo_size(bo);
 413                 else
 414                         bo->adev->gart_pin_size += amdgpu_bo_size(bo);
 415         } else {
 416                 dev_err(bo->adev->dev, "%p pin failed\n", bo);
 417         }
 418         return r;
 419 }
 420
 421 int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain, u64 *gpu_addr)
 422 {
 423         return amdgpu_bo_pin_restricted(bo, domain, 0, 0, gpu_addr);
 424 }
 425
 426 int amdgpu_bo_unpin(struct amdgpu_bo *bo)
 427 {
 428         int r, i;
 429
 430         if (!bo->pin_count) {
 431                 dev_warn(bo->adev->dev, "%p unpin not necessary\n", bo);
 432                 return 0;
 433         }
 434         bo->pin_count--;
 435         if (bo->pin_count)
 436                 return 0;
 437         for (i = 0; i < bo->placement.num_placement; i++) {
 438                 bo->placements[i].lpfn = 0;
 439                 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
 440         }
 441         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 442         if (likely(r == 0)) {
 443                 if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
 444                         bo->adev->vram_pin_size -= amdgpu_bo_size(bo);
 445                 else
 446                         bo->adev->gart_pin_size -= amdgpu_bo_size(bo);
 447         } else {
 448                 dev_err(bo->adev->dev, "%p validate failed for unpin\n", bo);
 449         }
 450         return r;
 451 }
 452
 453 int amdgpu_bo_evict_vram(struct amdgpu_device *adev)
 454 {
 455         /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
 456         if (0 && (adev->flags & AMD_IS_APU)) {
 457                 /* Useless to evict on IGP chips */
 458                 return 0;
 459         }
 460         return ttm_bo_evict_mm(&adev->mman.bdev, TTM_PL_VRAM);
 461 }
 462
 463 void amdgpu_bo_force_delete(struct amdgpu_device *adev)
 464 {
 465         struct amdgpu_bo *bo, *n;
 466
 467         if (list_empty(&adev->gem.objects)) {
 468                 return;
 469         }
 470         dev_err(adev->dev, "Userspace still has active objects !\n");
 471         list_for_each_entry_safe(bo, n, &adev->gem.objects, list) {
 472                 dev_err(adev->dev, "%p %p %lu %lu force free\n",
 473                         &bo->gem_base, bo, (unsigned long)bo->gem_base.size,
 474                         *((unsigned long *)&bo->gem_base.refcount));
 475                 mutex_lock(&bo->adev->gem.mutex);
 476                 list_del_init(&bo->list);
 477                 mutex_unlock(&bo->adev->gem.mutex);
 478                 /* this should unref the ttm bo */
 479                 drm_gem_object_unreference_unlocked(&bo->gem_base);
 480         }
 481 }
 482
 483 int amdgpu_bo_init(struct amdgpu_device *adev)
 484 {
 485         /* Add an MTRR for the VRAM */
 486         adev->mc.vram_mtrr = arch_phys_wc_add(adev->mc.aper_base,
 487                                               adev->mc.aper_size);
 488         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 489                 adev->mc.mc_vram_size >> 20,
 490                 (unsigned long long)adev->mc.aper_size >> 20);
 491         DRM_INFO("RAM width %dbits DDR\n",
 492                         adev->mc.vram_width);
 493         return amdgpu_ttm_init(adev);
 494 }
 495
 496 void amdgpu_bo_fini(struct amdgpu_device *adev)
 497 {
 498         amdgpu_ttm_fini(adev);
 499         arch_phys_wc_del(adev->mc.vram_mtrr);
 500 }
 501
 502 int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
 503                              struct vm_area_struct *vma)
 504 {
 505         return ttm_fbdev_mmap(vma, &bo->tbo);
 506 }
 507
 508 int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags)
 509 {
 510         if (AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
 511                 return -EINVAL;
 512
 513         bo->tiling_flags = tiling_flags;
 514         return 0;
 515 }
 516
 517 void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
 518 {
 519         lockdep_assert_held(&bo->tbo.resv->lock.base);
 520
 521         if (tiling_flags)
 522                 *tiling_flags = bo->tiling_flags;
 523 }
 524
 525 int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
 526                             uint32_t metadata_size, uint64_t flags)
 527 {
 528         void *buffer;
 529
 530         if (!metadata_size) {
 531                 if (bo->metadata_size) {
 532                         kfree(bo->metadata);
 533                         bo->metadata_size = 0;
 534                 }
 535                 return 0;
 536         }
 537
 538         if (metadata == NULL)
 539                 return -EINVAL;
 540
 541         buffer = kmemdup(metadata, metadata_size, GFP_KERNEL);
 542         if (buffer == NULL)
 543                 return -ENOMEM;
 544
 545         kfree(bo->metadata);
 546         bo->metadata_flags = flags;
 547         bo->metadata = buffer;
 548         bo->metadata_size = metadata_size;
 549
 550         return 0;
 551 }
 552
 553 int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
 554                            size_t buffer_size, uint32_t *metadata_size,
 555                            uint64_t *flags)
 556 {
 557         if (!buffer && !metadata_size)
 558                 return -EINVAL;
 559
 560         if (buffer) {
 561                 if (buffer_size < bo->metadata_size)
 562                         return -EINVAL;
 563
 564                 if (bo->metadata_size)
 565                         memcpy(buffer, bo->metadata, bo->metadata_size);
 566         }
 567
 568         if (metadata_size)
 569                 *metadata_size = bo->metadata_size;
 570         if (flags)
 571                 *flags = bo->metadata_flags;
 572
 573         return 0;
 574 }
 575
 576 void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
 577                            struct ttm_mem_reg *new_mem)
 578 {
 579         struct amdgpu_bo *rbo;
 580
 581         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
 582                 return;
 583
 584         rbo = container_of(bo, struct amdgpu_bo, tbo);
 585         amdgpu_vm_bo_invalidate(rbo->adev, rbo);
 586
 587         /* update statistics */
 588         if (!new_mem)
 589                 return;
 590
 591         /* move_notify is called before move happens */
 592         amdgpu_update_memory_usage(rbo->adev, &bo->mem, new_mem);
 593 }
 594
 595 int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 596 {
 597         struct amdgpu_device *adev;
 598         struct amdgpu_bo *abo;
 599         unsigned long offset, size, lpfn;
 600         int i, r;
 601
 602         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
 603                 return 0;
 604
 605         abo = container_of(bo, struct amdgpu_bo, tbo);
 606         adev = abo->adev;
 607         if (bo->mem.mem_type != TTM_PL_VRAM)
 608                 return 0;
 609
 610         size = bo->mem.num_pages << PAGE_SHIFT;
 611         offset = bo->mem.start << PAGE_SHIFT;
 612         if ((offset + size) <= adev->mc.visible_vram_size)
 613                 return 0;
 614
 615         /* hurrah the memory is not visible ! */
 616         amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM);
 617         lpfn =  adev->mc.visible_vram_size >> PAGE_SHIFT;
 618         for (i = 0; i < abo->placement.num_placement; i++) {
 619                 /* Force into visible VRAM */
 620                 if ((abo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 621                     (!abo->placements[i].lpfn || abo->placements[i].lpfn > lpfn))
 622                         abo->placements[i].lpfn = lpfn;
 623         }
 624         r = ttm_bo_validate(bo, &abo->placement, false, false);
 625         if (unlikely(r == -ENOMEM)) {
 626                 amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT);
 627                 return ttm_bo_validate(bo, &abo->placement, false, false);
 628         } else if (unlikely(r != 0)) {
 629                 return r;
 630         }
 631
 632         offset = bo->mem.start << PAGE_SHIFT;
 633         /* this should never happen */
 634         if ((offset + size) > adev->mc.visible_vram_size)
 635                 return -EINVAL;
 636
 637         return 0;
 638 }
 639
 640 /**
 641  * amdgpu_bo_fence - add fence to buffer object
 642  *
 643  * @bo: buffer object in question
 644  * @fence: fence to add
 645  * @shared: true if fence should be added shared
 646  *
 647  */
 648 void amdgpu_bo_fence(struct amdgpu_bo *bo, struct fence *fence,
 649                      bool shared)
 650 {
 651         struct reservation_object *resv = bo->tbo.resv;
 652
 653         if (shared)
 654                 reservation_object_add_shared_fence(resv, fence);
 655         else
 656                 reservation_object_add_excl_fence(resv, fence);
 657 }