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 <drm/drm_cache.h>
  37 #include "amdgpu.h"
  38 #include "amdgpu_trace.h"
  39
  40
  41
  42 static u64 amdgpu_get_vis_part_size(struct amdgpu_device *adev,
  43                                                 struct ttm_mem_reg *mem)
  44 {
  45         if (mem->start << PAGE_SHIFT >= adev->mc.visible_vram_size)
  46                 return 0;
  47
  48         return ((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
  54 static void amdgpu_update_memory_usage(struct amdgpu_device *adev,
  55                        struct ttm_mem_reg *old_mem,
  56                        struct ttm_mem_reg *new_mem)
  57 {
  58         u64 vis_size;
  59         if (!adev)
  60                 return;
  61
  62         if (new_mem) {
  63                 switch (new_mem->mem_type) {
  64                 case TTM_PL_TT:
  65                         atomic64_add(new_mem->size, &adev->gtt_usage);
  66                         break;
  67                 case TTM_PL_VRAM:
  68                         atomic64_add(new_mem->size, &adev->vram_usage);
  69                         vis_size = amdgpu_get_vis_part_size(adev, new_mem);
  70                         atomic64_add(vis_size, &adev->vram_vis_usage);
  71                         break;
  72                 }
  73         }
  74
  75         if (old_mem) {
  76                 switch (old_mem->mem_type) {
  77                 case TTM_PL_TT:
  78                         atomic64_sub(old_mem->size, &adev->gtt_usage);
  79                         break;
  80                 case TTM_PL_VRAM:
  81                         atomic64_sub(old_mem->size, &adev->vram_usage);
  82                         vis_size = amdgpu_get_vis_part_size(adev, old_mem);
  83                         atomic64_sub(vis_size, &adev->vram_vis_usage);
  84                         break;
  85                 }
  86         }
  87 }
  88
  89 static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
  90 {
  91         struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
  92         struct amdgpu_bo *bo;
  93
  94         bo = container_of(tbo, struct amdgpu_bo, tbo);
  95
  96         amdgpu_update_memory_usage(adev, &bo->tbo.mem, NULL);
  97
  98         drm_gem_object_release(&bo->gem_base);
  99         amdgpu_bo_unref(&bo->parent);
 100         if (!list_empty(&bo->shadow_list)) {
 101                 mutex_lock(&adev->shadow_list_lock);
 102                 list_del_init(&bo->shadow_list);
 103                 mutex_unlock(&adev->shadow_list_lock);
 104         }
 105         kfree(bo->metadata);
 106         kfree(bo);
 107 }
 108
 109 bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo)
 110 {
 111         if (bo->destroy == &amdgpu_ttm_bo_destroy)
 112                 return true;
 113         return false;
 114 }
 115
 116 static void amdgpu_ttm_placement_init(struct amdgpu_device *adev,
 117                                       struct ttm_placement *placement,
 118                                       struct ttm_place *places,
 119                                       u32 domain, u64 flags)
 120 {
 121         u32 c = 0;
 122
 123         if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
 124                 unsigned visible_pfn = adev->mc.visible_vram_size >> PAGE_SHIFT;
 125                 unsigned lpfn = 0;
 126
 127                 /* This forces a reallocation if the flag wasn't set before */
 128                 if (flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
 129                         lpfn = adev->mc.real_vram_size >> PAGE_SHIFT;
 130
 131                 places[c].fpfn = 0;
 132                 places[c].lpfn = lpfn;
 133                 places[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                         places[c].lpfn = visible_pfn;
 137                 else
 138                         places[c].flags |= TTM_PL_FLAG_TOPDOWN;
 139                 c++;
 140         }
 141
 142         if (domain & AMDGPU_GEM_DOMAIN_GTT) {
 143                 places[c].fpfn = 0;
 144                 places[c].lpfn = 0;
 145                 places[c].flags = TTM_PL_FLAG_TT;
 146                 if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 147                         places[c].flags |= TTM_PL_FLAG_WC |
 148                                 TTM_PL_FLAG_UNCACHED;
 149                 else
 150                         places[c].flags |= TTM_PL_FLAG_CACHED;
 151                 c++;
 152         }
 153
 154         if (domain & AMDGPU_GEM_DOMAIN_CPU) {
 155                 places[c].fpfn = 0;
 156                 places[c].lpfn = 0;
 157                 places[c].flags = TTM_PL_FLAG_SYSTEM;
 158                 if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 159                         places[c].flags |= TTM_PL_FLAG_WC |
 160                                 TTM_PL_FLAG_UNCACHED;
 161                 else
 162                         places[c].flags |= TTM_PL_FLAG_CACHED;
 163                 c++;
 164         }
 165
 166         if (domain & AMDGPU_GEM_DOMAIN_GDS) {
 167                 places[c].fpfn = 0;
 168                 places[c].lpfn = 0;
 169                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GDS;
 170                 c++;
 171         }
 172
 173         if (domain & AMDGPU_GEM_DOMAIN_GWS) {
 174                 places[c].fpfn = 0;
 175                 places[c].lpfn = 0;
 176                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GWS;
 177                 c++;
 178         }
 179
 180         if (domain & AMDGPU_GEM_DOMAIN_OA) {
 181                 places[c].fpfn = 0;
 182                 places[c].lpfn = 0;
 183                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_OA;
 184                 c++;
 185         }
 186
 187         if (!c) {
 188                 places[c].fpfn = 0;
 189                 places[c].lpfn = 0;
 190                 places[c].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
 191                 c++;
 192         }
 193
 194         placement->num_placement = c;
 195         placement->placement = places;
 196
 197         placement->num_busy_placement = c;
 198         placement->busy_placement = places;
 199 }
 200
 201 void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
 202 {
 203         struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
 204
 205         amdgpu_ttm_placement_init(adev, &abo->placement, abo->placements,
 206                                   domain, abo->flags);
 207 }
 208
 209 static void amdgpu_fill_placement_to_bo(struct amdgpu_bo *bo,
 210                                         struct ttm_placement *placement)
 211 {
 212         BUG_ON(placement->num_placement > (AMDGPU_GEM_DOMAIN_MAX + 1));
 213
 214         memcpy(bo->placements, placement->placement,
 215                placement->num_placement * sizeof(struct ttm_place));
 216         bo->placement.num_placement = placement->num_placement;
 217         bo->placement.num_busy_placement = placement->num_busy_placement;
 218         bo->placement.placement = bo->placements;
 219         bo->placement.busy_placement = bo->placements;
 220 }
 221
 222 /**
 223  * amdgpu_bo_create_kernel - create BO for kernel use
 224  *
 225  * @adev: amdgpu device object
 226  * @size: size for the new BO
 227  * @align: alignment for the new BO
 228  * @domain: where to place it
 229  * @bo_ptr: resulting BO
 230  * @gpu_addr: GPU addr of the pinned BO
 231  * @cpu_addr: optional CPU address mapping
 232  *
 233  * Allocates and pins a BO for kernel internal use.
 234  *
 235  * Returns 0 on success, negative error code otherwise.
 236  */
 237 int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
 238                             unsigned long size, int align,
 239                             u32 domain, struct amdgpu_bo **bo_ptr,
 240                             u64 *gpu_addr, void **cpu_addr)
 241 {
 242         int r;
 243
 244         r = amdgpu_bo_create(adev, size, align, true, domain,
 245                              AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
 246                              AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,
 247                              NULL, NULL, bo_ptr);
 248         if (r) {
 249                 dev_err(adev->dev, "(%d) failed to allocate kernel bo\n", r);
 250                 return r;
 251         }
 252
 253         r = amdgpu_bo_reserve(*bo_ptr, false);
 254         if (r) {
 255                 dev_err(adev->dev, "(%d) failed to reserve kernel bo\n", r);
 256                 goto error_free;
 257         }
 258
 259         r = amdgpu_bo_pin(*bo_ptr, domain, gpu_addr);
 260         if (r) {
 261                 dev_err(adev->dev, "(%d) kernel bo pin failed\n", r);
 262                 goto error_unreserve;
 263         }
 264
 265         if (cpu_addr) {
 266                 r = amdgpu_bo_kmap(*bo_ptr, cpu_addr);
 267                 if (r) {
 268                         dev_err(adev->dev, "(%d) kernel bo map failed\n", r);
 269                         goto error_unreserve;
 270                 }
 271         }
 272
 273         amdgpu_bo_unreserve(*bo_ptr);
 274
 275         return 0;
 276
 277 error_unreserve:
 278         amdgpu_bo_unreserve(*bo_ptr);
 279
 280 error_free:
 281         amdgpu_bo_unref(bo_ptr);
 282
 283         return r;
 284 }
 285
 286 /**
 287  * amdgpu_bo_free_kernel - free BO for kernel use
 288  *
 289  * @bo: amdgpu BO to free
 290  *
 291  * unmaps and unpin a BO for kernel internal use.
 292  */
 293 void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
 294                            void **cpu_addr)
 295 {
 296         if (*bo == NULL)
 297                 return;
 298
 299         if (likely(amdgpu_bo_reserve(*bo, false) == 0)) {
 300                 if (cpu_addr)
 301                         amdgpu_bo_kunmap(*bo);
 302
 303                 amdgpu_bo_unpin(*bo);
 304                 amdgpu_bo_unreserve(*bo);
 305         }
 306         amdgpu_bo_unref(bo);
 307
 308         if (gpu_addr)
 309                 *gpu_addr = 0;
 310
 311         if (cpu_addr)
 312                 *cpu_addr = NULL;
 313 }
 314
 315 int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
 316                                 unsigned long size, int byte_align,
 317                                 bool kernel, u32 domain, u64 flags,
 318                                 struct sg_table *sg,
 319                                 struct ttm_placement *placement,
 320                                 struct reservation_object *resv,
 321                                 struct amdgpu_bo **bo_ptr)
 322 {
 323         struct amdgpu_bo *bo;
 324         enum ttm_bo_type type;
 325         unsigned long page_align;
 326         u64 initial_bytes_moved;
 327         size_t acc_size;
 328         int r;
 329
 330         page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
 331         size = ALIGN(size, PAGE_SIZE);
 332
 333         if (kernel) {
 334                 type = ttm_bo_type_kernel;
 335         } else if (sg) {
 336                 type = ttm_bo_type_sg;
 337         } else {
 338                 type = ttm_bo_type_device;
 339         }
 340         *bo_ptr = NULL;
 341
 342         acc_size = ttm_bo_dma_acc_size(&adev->mman.bdev, size,
 343                                        sizeof(struct amdgpu_bo));
 344
 345         bo = kzalloc(sizeof(struct amdgpu_bo), GFP_KERNEL);
 346         if (bo == NULL)
 347                 return -ENOMEM;
 348         r = drm_gem_object_init(adev->ddev, &bo->gem_base, size);
 349         if (unlikely(r)) {
 350                 kfree(bo);
 351                 return r;
 352         }
 353         INIT_LIST_HEAD(&bo->shadow_list);
 354         INIT_LIST_HEAD(&bo->va);
 355         bo->prefered_domains = domain & (AMDGPU_GEM_DOMAIN_VRAM |
 356                                          AMDGPU_GEM_DOMAIN_GTT |
 357                                          AMDGPU_GEM_DOMAIN_CPU |
 358                                          AMDGPU_GEM_DOMAIN_GDS |
 359                                          AMDGPU_GEM_DOMAIN_GWS |
 360                                          AMDGPU_GEM_DOMAIN_OA);
 361         bo->allowed_domains = bo->prefered_domains;
 362         if (!kernel && bo->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
 363                 bo->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
 364
 365         bo->flags = flags;
 366
 367 #ifdef CONFIG_X86_32
 368         /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
 369          * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
 370          */
 371         bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 372 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
 373         /* Don't try to enable write-combining when it can't work, or things
 374          * may be slow
 375          * See https://bugs.freedesktop.org/show_bug.cgi?id=88758
 376          */
 377
 378 #ifndef CONFIG_COMPILE_TEST
 379 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
 380          thanks to write-combining
 381 #endif
 382
 383         if (bo->flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 384                 DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
 385                               "better performance thanks to write-combining\n");
 386         bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 387 #else
 388         /* For architectures that don't support WC memory,
 389          * mask out the WC flag from the BO
 390          */
 391         if (!drm_arch_can_wc_memory())
 392                 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 393 #endif
 394
 395         amdgpu_fill_placement_to_bo(bo, placement);
 396         /* Kernel allocation are uninterruptible */
 397
 398         if (!resv) {
 399                 bool locked;
 400
 401                 reservation_object_init(&bo->tbo.ttm_resv);
 402                 locked = ww_mutex_trylock(&bo->tbo.ttm_resv.lock);
 403                 WARN_ON(!locked);
 404         }
 405
 406         initial_bytes_moved = atomic64_read(&adev->num_bytes_moved);
 407         r = ttm_bo_init(&adev->mman.bdev, &bo->tbo, size, type,
 408                         &bo->placement, page_align, !kernel, NULL,
 409                         acc_size, sg, resv ? resv : &bo->tbo.ttm_resv,
 410                         &amdgpu_ttm_bo_destroy);
 411         amdgpu_cs_report_moved_bytes(adev,
 412                 atomic64_read(&adev->num_bytes_moved) - initial_bytes_moved);
 413
 414         if (unlikely(r != 0)) {
 415                 if (!resv)
 416                         ww_mutex_unlock(&bo->tbo.resv->lock);
 417                 return r;
 418         }
 419
 420         bo->tbo.priority = ilog2(bo->tbo.num_pages);
 421         if (kernel)
 422                 bo->tbo.priority *= 2;
 423         bo->tbo.priority = min(bo->tbo.priority, (unsigned)(TTM_MAX_BO_PRIORITY - 1));
 424
 425         if (flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
 426             bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) {
 427                 struct dma_fence *fence;
 428
 429                 r = amdgpu_fill_buffer(bo, 0, bo->tbo.resv, &fence);
 430                 if (unlikely(r))
 431                         goto fail_unreserve;
 432
 433                 amdgpu_bo_fence(bo, fence, false);
 434                 dma_fence_put(bo->tbo.moving);
 435                 bo->tbo.moving = dma_fence_get(fence);
 436                 dma_fence_put(fence);
 437         }
 438         if (!resv)
 439                 ww_mutex_unlock(&bo->tbo.resv->lock);
 440         *bo_ptr = bo;
 441
 442         trace_amdgpu_bo_create(bo);
 443
 444         return 0;
 445
 446 fail_unreserve:
 447         if (!resv)
 448                 ww_mutex_unlock(&bo->tbo.resv->lock);
 449         amdgpu_bo_unref(&bo);
 450         return r;
 451 }
 452
 453 static int amdgpu_bo_create_shadow(struct amdgpu_device *adev,
 454                                    unsigned long size, int byte_align,
 455                                    struct amdgpu_bo *bo)
 456 {
 457         struct ttm_placement placement = {0};
 458         struct ttm_place placements[AMDGPU_GEM_DOMAIN_MAX + 1];
 459         int r;
 460
 461         if (bo->shadow)
 462                 return 0;
 463
 464         bo->flags |= AMDGPU_GEM_CREATE_SHADOW;
 465         memset(&placements, 0,
 466                (AMDGPU_GEM_DOMAIN_MAX + 1) * sizeof(struct ttm_place));
 467
 468         amdgpu_ttm_placement_init(adev, &placement,
 469                                   placements, AMDGPU_GEM_DOMAIN_GTT,
 470                                   AMDGPU_GEM_CREATE_CPU_GTT_USWC);
 471
 472         r = amdgpu_bo_create_restricted(adev, size, byte_align, true,
 473                                         AMDGPU_GEM_DOMAIN_GTT,
 474                                         AMDGPU_GEM_CREATE_CPU_GTT_USWC,
 475                                         NULL, &placement,
 476                                         bo->tbo.resv,
 477                                         &bo->shadow);
 478         if (!r) {
 479                 bo->shadow->parent = amdgpu_bo_ref(bo);
 480                 mutex_lock(&adev->shadow_list_lock);
 481                 list_add_tail(&bo->shadow_list, &adev->shadow_list);
 482                 mutex_unlock(&adev->shadow_list_lock);
 483         }
 484
 485         return r;
 486 }
 487
 488 int amdgpu_bo_create(struct amdgpu_device *adev,
 489                      unsigned long size, int byte_align,
 490                      bool kernel, u32 domain, u64 flags,
 491                      struct sg_table *sg,
 492                      struct reservation_object *resv,
 493                      struct amdgpu_bo **bo_ptr)
 494 {
 495         struct ttm_placement placement = {0};
 496         struct ttm_place placements[AMDGPU_GEM_DOMAIN_MAX + 1];
 497         int r;
 498
 499         memset(&placements, 0,
 500                (AMDGPU_GEM_DOMAIN_MAX + 1) * sizeof(struct ttm_place));
 501
 502         amdgpu_ttm_placement_init(adev, &placement,
 503                                   placements, domain, flags);
 504
 505         r = amdgpu_bo_create_restricted(adev, size, byte_align, kernel,
 506                                         domain, flags, sg, &placement,
 507                                         resv, bo_ptr);
 508         if (r)
 509                 return r;
 510
 511         if (amdgpu_need_backup(adev) && (flags & AMDGPU_GEM_CREATE_SHADOW)) {
 512                 if (!resv) {
 513                         r = ww_mutex_lock(&(*bo_ptr)->tbo.resv->lock, NULL);
 514                         WARN_ON(r != 0);
 515                 }
 516
 517                 r = amdgpu_bo_create_shadow(adev, size, byte_align, (*bo_ptr));
 518
 519                 if (!resv)
 520                         ww_mutex_unlock(&(*bo_ptr)->tbo.resv->lock);
 521
 522                 if (r)
 523                         amdgpu_bo_unref(bo_ptr);
 524         }
 525
 526         return r;
 527 }
 528
 529 int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
 530                                struct amdgpu_ring *ring,
 531                                struct amdgpu_bo *bo,
 532                                struct reservation_object *resv,
 533                                struct dma_fence **fence,
 534                                bool direct)
 535
 536 {
 537         struct amdgpu_bo *shadow = bo->shadow;
 538         uint64_t bo_addr, shadow_addr;
 539         int r;
 540
 541         if (!shadow)
 542                 return -EINVAL;
 543
 544         bo_addr = amdgpu_bo_gpu_offset(bo);
 545         shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
 546
 547         r = reservation_object_reserve_shared(bo->tbo.resv);
 548         if (r)
 549                 goto err;
 550
 551         r = amdgpu_copy_buffer(ring, bo_addr, shadow_addr,
 552                                amdgpu_bo_size(bo), resv, fence,
 553                                direct);
 554         if (!r)
 555                 amdgpu_bo_fence(bo, *fence, true);
 556
 557 err:
 558         return r;
 559 }
 560
 561 int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
 562                                   struct amdgpu_ring *ring,
 563                                   struct amdgpu_bo *bo,
 564                                   struct reservation_object *resv,
 565                                   struct dma_fence **fence,
 566                                   bool direct)
 567
 568 {
 569         struct amdgpu_bo *shadow = bo->shadow;
 570         uint64_t bo_addr, shadow_addr;
 571         int r;
 572
 573         if (!shadow)
 574                 return -EINVAL;
 575
 576         bo_addr = amdgpu_bo_gpu_offset(bo);
 577         shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
 578
 579         r = reservation_object_reserve_shared(bo->tbo.resv);
 580         if (r)
 581                 goto err;
 582
 583         r = amdgpu_copy_buffer(ring, shadow_addr, bo_addr,
 584                                amdgpu_bo_size(bo), resv, fence,
 585                                direct);
 586         if (!r)
 587                 amdgpu_bo_fence(bo, *fence, true);
 588
 589 err:
 590         return r;
 591 }
 592
 593 int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
 594 {
 595         bool is_iomem;
 596         long r;
 597
 598         if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 599                 return -EPERM;
 600
 601         if (bo->kptr) {
 602                 if (ptr) {
 603                         *ptr = bo->kptr;
 604                 }
 605                 return 0;
 606         }
 607
 608         r = reservation_object_wait_timeout_rcu(bo->tbo.resv, false, false,
 609                                                 MAX_SCHEDULE_TIMEOUT);
 610         if (r < 0)
 611                 return r;
 612
 613         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 614         if (r)
 615                 return r;
 616
 617         bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 618         if (ptr)
 619                 *ptr = bo->kptr;
 620
 621         return 0;
 622 }
 623
 624 void amdgpu_bo_kunmap(struct amdgpu_bo *bo)
 625 {
 626         if (bo->kptr == NULL)
 627                 return;
 628         bo->kptr = NULL;
 629         ttm_bo_kunmap(&bo->kmap);
 630 }
 631
 632 struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo)
 633 {
 634         if (bo == NULL)
 635                 return NULL;
 636
 637         ttm_bo_reference(&bo->tbo);
 638         return bo;
 639 }
 640
 641 void amdgpu_bo_unref(struct amdgpu_bo **bo)
 642 {
 643         struct ttm_buffer_object *tbo;
 644
 645         if ((*bo) == NULL)
 646                 return;
 647
 648         tbo = &((*bo)->tbo);
 649         ttm_bo_unref(&tbo);
 650         if (tbo == NULL)
 651                 *bo = NULL;
 652 }
 653
 654 int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
 655                              u64 min_offset, u64 max_offset,
 656                              u64 *gpu_addr)
 657 {
 658         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 659         int r, i;
 660         unsigned fpfn, lpfn;
 661
 662         if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
 663                 return -EPERM;
 664
 665         if (WARN_ON_ONCE(min_offset > max_offset))
 666                 return -EINVAL;
 667
 668         if (bo->pin_count) {
 669                 uint32_t mem_type = bo->tbo.mem.mem_type;
 670
 671                 if (domain != amdgpu_mem_type_to_domain(mem_type))
 672                         return -EINVAL;
 673
 674                 bo->pin_count++;
 675                 if (gpu_addr)
 676                         *gpu_addr = amdgpu_bo_gpu_offset(bo);
 677
 678                 if (max_offset != 0) {
 679                         u64 domain_start = bo->tbo.bdev->man[mem_type].gpu_offset;
 680                         WARN_ON_ONCE(max_offset <
 681                                      (amdgpu_bo_gpu_offset(bo) - domain_start));
 682                 }
 683
 684                 return 0;
 685         }
 686
 687         bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
 688         amdgpu_ttm_placement_from_domain(bo, domain);
 689         for (i = 0; i < bo->placement.num_placement; i++) {
 690                 /* force to pin into visible video ram */
 691                 if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 692                     !(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS) &&
 693                     (!max_offset || max_offset >
 694                      adev->mc.visible_vram_size)) {
 695                         if (WARN_ON_ONCE(min_offset >
 696                                          adev->mc.visible_vram_size))
 697                                 return -EINVAL;
 698                         fpfn = min_offset >> PAGE_SHIFT;
 699                         lpfn = adev->mc.visible_vram_size >> PAGE_SHIFT;
 700                 } else {
 701                         fpfn = min_offset >> PAGE_SHIFT;
 702                         lpfn = max_offset >> PAGE_SHIFT;
 703                 }
 704                 if (fpfn > bo->placements[i].fpfn)
 705                         bo->placements[i].fpfn = fpfn;
 706                 if (!bo->placements[i].lpfn ||
 707                     (lpfn && lpfn < bo->placements[i].lpfn))
 708                         bo->placements[i].lpfn = lpfn;
 709                 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
 710         }
 711
 712         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 713         if (unlikely(r)) {
 714                 dev_err(adev->dev, "%p pin failed\n", bo);
 715                 goto error;
 716         }
 717         r = amdgpu_ttm_bind(&bo->tbo, &bo->tbo.mem);
 718         if (unlikely(r)) {
 719                 dev_err(adev->dev, "%p bind failed\n", bo);
 720                 goto error;
 721         }
 722
 723         bo->pin_count = 1;
 724         if (gpu_addr != NULL)
 725                 *gpu_addr = amdgpu_bo_gpu_offset(bo);
 726         if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
 727                 adev->vram_pin_size += amdgpu_bo_size(bo);
 728                 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 729                         adev->invisible_pin_size += amdgpu_bo_size(bo);
 730         } else if (domain == AMDGPU_GEM_DOMAIN_GTT) {
 731                 adev->gart_pin_size += amdgpu_bo_size(bo);
 732         }
 733
 734 error:
 735         return r;
 736 }
 737
 738 int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain, u64 *gpu_addr)
 739 {
 740         return amdgpu_bo_pin_restricted(bo, domain, 0, 0, gpu_addr);
 741 }
 742
 743 int amdgpu_bo_unpin(struct amdgpu_bo *bo)
 744 {
 745         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 746         int r, i;
 747
 748         if (!bo->pin_count) {
 749                 dev_warn(adev->dev, "%p unpin not necessary\n", bo);
 750                 return 0;
 751         }
 752         bo->pin_count--;
 753         if (bo->pin_count)
 754                 return 0;
 755         for (i = 0; i < bo->placement.num_placement; i++) {
 756                 bo->placements[i].lpfn = 0;
 757                 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
 758         }
 759         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 760         if (unlikely(r)) {
 761                 dev_err(adev->dev, "%p validate failed for unpin\n", bo);
 762                 goto error;
 763         }
 764
 765         if (bo->tbo.mem.mem_type == TTM_PL_VRAM) {
 766                 adev->vram_pin_size -= amdgpu_bo_size(bo);
 767                 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 768                         adev->invisible_pin_size -= amdgpu_bo_size(bo);
 769         } else if (bo->tbo.mem.mem_type == TTM_PL_TT) {
 770                 adev->gart_pin_size -= amdgpu_bo_size(bo);
 771         }
 772
 773 error:
 774         return r;
 775 }
 776
 777 int amdgpu_bo_evict_vram(struct amdgpu_device *adev)
 778 {
 779         /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
 780         if (0 && (adev->flags & AMD_IS_APU)) {
 781                 /* Useless to evict on IGP chips */
 782                 return 0;
 783         }
 784         return ttm_bo_evict_mm(&adev->mman.bdev, TTM_PL_VRAM);
 785 }
 786
 787 static const char *amdgpu_vram_names[] = {
 788         "UNKNOWN",
 789         "GDDR1",
 790         "DDR2",
 791         "GDDR3",
 792         "GDDR4",
 793         "GDDR5",
 794         "HBM",
 795         "DDR3"
 796 };
 797
 798 int amdgpu_bo_init(struct amdgpu_device *adev)
 799 {
 800         /* reserve PAT memory space to WC for VRAM */
 801         arch_io_reserve_memtype_wc(adev->mc.aper_base,
 802                                    adev->mc.aper_size);
 803
 804         /* Add an MTRR for the VRAM */
 805         adev->mc.vram_mtrr = arch_phys_wc_add(adev->mc.aper_base,
 806                                               adev->mc.aper_size);
 807         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 808                 adev->mc.mc_vram_size >> 20,
 809                 (unsigned long long)adev->mc.aper_size >> 20);
 810         DRM_INFO("RAM width %dbits %s\n",
 811                  adev->mc.vram_width, amdgpu_vram_names[adev->mc.vram_type]);
 812         return amdgpu_ttm_init(adev);
 813 }
 814
 815 void amdgpu_bo_fini(struct amdgpu_device *adev)
 816 {
 817         amdgpu_ttm_fini(adev);
 818         arch_phys_wc_del(adev->mc.vram_mtrr);
 819         arch_io_free_memtype_wc(adev->mc.aper_base, adev->mc.aper_size);
 820 }
 821
 822 int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
 823                              struct vm_area_struct *vma)
 824 {
 825         return ttm_fbdev_mmap(vma, &bo->tbo);
 826 }
 827
 828 int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags)
 829 {
 830         if (AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
 831                 return -EINVAL;
 832
 833         bo->tiling_flags = tiling_flags;
 834         return 0;
 835 }
 836
 837 void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
 838 {
 839         lockdep_assert_held(&bo->tbo.resv->lock.base);
 840
 841         if (tiling_flags)
 842                 *tiling_flags = bo->tiling_flags;
 843 }
 844
 845 int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
 846                             uint32_t metadata_size, uint64_t flags)
 847 {
 848         void *buffer;
 849
 850         if (!metadata_size) {
 851                 if (bo->metadata_size) {
 852                         kfree(bo->metadata);
 853                         bo->metadata = NULL;
 854                         bo->metadata_size = 0;
 855                 }
 856                 return 0;
 857         }
 858
 859         if (metadata == NULL)
 860                 return -EINVAL;
 861
 862         buffer = kmemdup(metadata, metadata_size, GFP_KERNEL);
 863         if (buffer == NULL)
 864                 return -ENOMEM;
 865
 866         kfree(bo->metadata);
 867         bo->metadata_flags = flags;
 868         bo->metadata = buffer;
 869         bo->metadata_size = metadata_size;
 870
 871         return 0;
 872 }
 873
 874 int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
 875                            size_t buffer_size, uint32_t *metadata_size,
 876                            uint64_t *flags)
 877 {
 878         if (!buffer && !metadata_size)
 879                 return -EINVAL;
 880
 881         if (buffer) {
 882                 if (buffer_size < bo->metadata_size)
 883                         return -EINVAL;
 884
 885                 if (bo->metadata_size)
 886                         memcpy(buffer, bo->metadata, bo->metadata_size);
 887         }
 888
 889         if (metadata_size)
 890                 *metadata_size = bo->metadata_size;
 891         if (flags)
 892                 *flags = bo->metadata_flags;
 893
 894         return 0;
 895 }
 896
 897 void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
 898                            bool evict,
 899                            struct ttm_mem_reg *new_mem)
 900 {
 901         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 902         struct amdgpu_bo *abo;
 903         struct ttm_mem_reg *old_mem = &bo->mem;
 904
 905         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
 906                 return;
 907
 908         abo = container_of(bo, struct amdgpu_bo, tbo);
 909         amdgpu_vm_bo_invalidate(adev, abo);
 910
 911         /* remember the eviction */
 912         if (evict)
 913                 atomic64_inc(&adev->num_evictions);
 914
 915         /* update statistics */
 916         if (!new_mem)
 917                 return;
 918
 919         /* move_notify is called before move happens */
 920         amdgpu_update_memory_usage(adev, &bo->mem, new_mem);
 921
 922         trace_amdgpu_ttm_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
 923 }
 924
 925 int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 926 {
 927         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 928         struct amdgpu_bo *abo;
 929         unsigned long offset, size, lpfn;
 930         int i, r;
 931
 932         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
 933                 return 0;
 934
 935         abo = container_of(bo, struct amdgpu_bo, tbo);
 936         if (bo->mem.mem_type != TTM_PL_VRAM)
 937                 return 0;
 938
 939         size = bo->mem.num_pages << PAGE_SHIFT;
 940         offset = bo->mem.start << PAGE_SHIFT;
 941         /* TODO: figure out how to map scattered VRAM to the CPU */
 942         if ((offset + size) <= adev->mc.visible_vram_size &&
 943             (abo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS))
 944                 return 0;
 945
 946         /* Can't move a pinned BO to visible VRAM */
 947         if (abo->pin_count > 0)
 948                 return -EINVAL;
 949
 950         /* hurrah the memory is not visible ! */
 951         abo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
 952         amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM);
 953         lpfn =  adev->mc.visible_vram_size >> PAGE_SHIFT;
 954         for (i = 0; i < abo->placement.num_placement; i++) {
 955                 /* Force into visible VRAM */
 956                 if ((abo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 957                     (!abo->placements[i].lpfn ||
 958                      abo->placements[i].lpfn > lpfn))
 959                         abo->placements[i].lpfn = lpfn;
 960         }
 961         r = ttm_bo_validate(bo, &abo->placement, false, false);
 962         if (unlikely(r == -ENOMEM)) {
 963                 amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT);
 964                 return ttm_bo_validate(bo, &abo->placement, false, false);
 965         } else if (unlikely(r != 0)) {
 966                 return r;
 967         }
 968
 969         offset = bo->mem.start << PAGE_SHIFT;
 970         /* this should never happen */
 971         if ((offset + size) > adev->mc.visible_vram_size)
 972                 return -EINVAL;
 973
 974         return 0;
 975 }
 976
 977 /**
 978  * amdgpu_bo_fence - add fence to buffer object
 979  *
 980  * @bo: buffer object in question
 981  * @fence: fence to add
 982  * @shared: true if fence should be added shared
 983  *
 984  */
 985 void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
 986                      bool shared)
 987 {
 988         struct reservation_object *resv = bo->tbo.resv;
 989
 990         if (shared)
 991                 reservation_object_add_shared_fence(resv, fence);
 992         else
 993                 reservation_object_add_excl_fence(resv, fence);
 994 }
 995
 996 /**
 997  * amdgpu_bo_gpu_offset - return GPU offset of bo
 998  * @bo: amdgpu object for which we query the offset
 999  *
1000  * Returns current GPU offset of the object.
1001  *
1002  * Note: object should either be pinned or reserved when calling this
1003  * function, it might be useful to add check for this for debugging.
1004  */
1005 u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
1006 {
1007         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_SYSTEM);
1008         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_TT &&
1009                      !amdgpu_ttm_is_bound(bo->tbo.ttm));
1010         WARN_ON_ONCE(!ww_mutex_is_locked(&bo->tbo.resv->lock) &&
1011                      !bo->pin_count);
1012         WARN_ON_ONCE(bo->tbo.mem.start == AMDGPU_BO_INVALID_OFFSET);
1013         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_VRAM &&
1014                      !(bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS));
1015
1016         return bo->tbo.offset;
1017 }