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 <[email protected]>
  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 #include "amdgpu_amdkfd.h"
  40
  41 static bool amdgpu_need_backup(struct amdgpu_device *adev)
  42 {
  43         if (adev->flags & AMD_IS_APU)
  44                 return false;
  45
  46         if (amdgpu_gpu_recovery == 0 ||
  47             (amdgpu_gpu_recovery == -1  && !amdgpu_sriov_vf(adev)))
  48                 return false;
  49
  50         return true;
  51 }
  52
  53 static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
  54 {
  55         struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
  56         struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
  57
  58         if (bo->kfd_bo)
  59                 amdgpu_amdkfd_unreserve_system_memory_limit(bo);
  60
  61         amdgpu_bo_kunmap(bo);
  62
  63         if (bo->gem_base.import_attach)
  64                 drm_prime_gem_destroy(&bo->gem_base, bo->tbo.sg);
  65         drm_gem_object_release(&bo->gem_base);
  66         amdgpu_bo_unref(&bo->parent);
  67         if (!list_empty(&bo->shadow_list)) {
  68                 mutex_lock(&adev->shadow_list_lock);
  69                 list_del_init(&bo->shadow_list);
  70                 mutex_unlock(&adev->shadow_list_lock);
  71         }
  72         kfree(bo->metadata);
  73         kfree(bo);
  74 }
  75
  76 bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo)
  77 {
  78         if (bo->destroy == &amdgpu_ttm_bo_destroy)
  79                 return true;
  80         return false;
  81 }
  82
  83 void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
  84 {
  85         struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
  86         struct ttm_placement *placement = &abo->placement;
  87         struct ttm_place *places = abo->placements;
  88         u64 flags = abo->flags;
  89         u32 c = 0;
  90
  91         if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
  92                 unsigned visible_pfn = adev->gmc.visible_vram_size >> PAGE_SHIFT;
  93
  94                 places[c].fpfn = 0;
  95                 places[c].lpfn = 0;
  96                 places[c].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
  97                         TTM_PL_FLAG_VRAM;
  98
  99                 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
 100                         places[c].lpfn = visible_pfn;
 101                 else
 102                         places[c].flags |= TTM_PL_FLAG_TOPDOWN;
 103
 104                 if (flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
 105                         places[c].flags |= TTM_PL_FLAG_CONTIGUOUS;
 106                 c++;
 107         }
 108
 109         if (domain & AMDGPU_GEM_DOMAIN_GTT) {
 110                 places[c].fpfn = 0;
 111                 if (flags & AMDGPU_GEM_CREATE_SHADOW)
 112                         places[c].lpfn = adev->gmc.gart_size >> PAGE_SHIFT;
 113                 else
 114                         places[c].lpfn = 0;
 115                 places[c].flags = TTM_PL_FLAG_TT;
 116                 if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 117                         places[c].flags |= TTM_PL_FLAG_WC |
 118                                 TTM_PL_FLAG_UNCACHED;
 119                 else
 120                         places[c].flags |= TTM_PL_FLAG_CACHED;
 121                 c++;
 122         }
 123
 124         if (domain & AMDGPU_GEM_DOMAIN_CPU) {
 125                 places[c].fpfn = 0;
 126                 places[c].lpfn = 0;
 127                 places[c].flags = TTM_PL_FLAG_SYSTEM;
 128                 if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 129                         places[c].flags |= TTM_PL_FLAG_WC |
 130                                 TTM_PL_FLAG_UNCACHED;
 131                 else
 132                         places[c].flags |= TTM_PL_FLAG_CACHED;
 133                 c++;
 134         }
 135
 136         if (domain & AMDGPU_GEM_DOMAIN_GDS) {
 137                 places[c].fpfn = 0;
 138                 places[c].lpfn = 0;
 139                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GDS;
 140                 c++;
 141         }
 142
 143         if (domain & AMDGPU_GEM_DOMAIN_GWS) {
 144                 places[c].fpfn = 0;
 145                 places[c].lpfn = 0;
 146                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GWS;
 147                 c++;
 148         }
 149
 150         if (domain & AMDGPU_GEM_DOMAIN_OA) {
 151                 places[c].fpfn = 0;
 152                 places[c].lpfn = 0;
 153                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_OA;
 154                 c++;
 155         }
 156
 157         if (!c) {
 158                 places[c].fpfn = 0;
 159                 places[c].lpfn = 0;
 160                 places[c].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
 161                 c++;
 162         }
 163
 164         placement->num_placement = c;
 165         placement->placement = places;
 166
 167         placement->num_busy_placement = c;
 168         placement->busy_placement = places;
 169 }
 170
 171 /**
 172  * amdgpu_bo_create_reserved - create reserved BO for kernel use
 173  *
 174  * @adev: amdgpu device object
 175  * @size: size for the new BO
 176  * @align: alignment for the new BO
 177  * @domain: where to place it
 178  * @bo_ptr: used to initialize BOs in structures
 179  * @gpu_addr: GPU addr of the pinned BO
 180  * @cpu_addr: optional CPU address mapping
 181  *
 182  * Allocates and pins a BO for kernel internal use, and returns it still
 183  * reserved.
 184  *
 185  * Note: For bo_ptr new BO is only created if bo_ptr points to NULL.
 186  *
 187  * Returns 0 on success, negative error code otherwise.
 188  */
 189 int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
 190                               unsigned long size, int align,
 191                               u32 domain, struct amdgpu_bo **bo_ptr,
 192                               u64 *gpu_addr, void **cpu_addr)
 193 {
 194         bool free = false;
 195         int r;
 196
 197         if (!*bo_ptr) {
 198                 r = amdgpu_bo_create(adev, size, align, domain,
 199                                      AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
 200                                      AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,
 201                                      ttm_bo_type_kernel, NULL, bo_ptr);
 202                 if (r) {
 203                         dev_err(adev->dev, "(%d) failed to allocate kernel bo\n",
 204                                 r);
 205                         return r;
 206                 }
 207                 free = true;
 208         }
 209
 210         r = amdgpu_bo_reserve(*bo_ptr, false);
 211         if (r) {
 212                 dev_err(adev->dev, "(%d) failed to reserve kernel bo\n", r);
 213                 goto error_free;
 214         }
 215
 216         r = amdgpu_bo_pin(*bo_ptr, domain, gpu_addr);
 217         if (r) {
 218                 dev_err(adev->dev, "(%d) kernel bo pin failed\n", r);
 219                 goto error_unreserve;
 220         }
 221
 222         if (cpu_addr) {
 223                 r = amdgpu_bo_kmap(*bo_ptr, cpu_addr);
 224                 if (r) {
 225                         dev_err(adev->dev, "(%d) kernel bo map failed\n", r);
 226                         goto error_unreserve;
 227                 }
 228         }
 229
 230         return 0;
 231
 232 error_unreserve:
 233         amdgpu_bo_unreserve(*bo_ptr);
 234
 235 error_free:
 236         if (free)
 237                 amdgpu_bo_unref(bo_ptr);
 238
 239         return r;
 240 }
 241
 242 /**
 243  * amdgpu_bo_create_kernel - create BO for kernel use
 244  *
 245  * @adev: amdgpu device object
 246  * @size: size for the new BO
 247  * @align: alignment for the new BO
 248  * @domain: where to place it
 249  * @bo_ptr:  used to initialize BOs in structures
 250  * @gpu_addr: GPU addr of the pinned BO
 251  * @cpu_addr: optional CPU address mapping
 252  *
 253  * Allocates and pins a BO for kernel internal use.
 254  *
 255  * Note: For bo_ptr new BO is only created if bo_ptr points to NULL.
 256  *
 257  * Returns 0 on success, negative error code otherwise.
 258  */
 259 int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
 260                             unsigned long size, int align,
 261                             u32 domain, struct amdgpu_bo **bo_ptr,
 262                             u64 *gpu_addr, void **cpu_addr)
 263 {
 264         int r;
 265
 266         r = amdgpu_bo_create_reserved(adev, size, align, domain, bo_ptr,
 267                                       gpu_addr, cpu_addr);
 268
 269         if (r)
 270                 return r;
 271
 272         amdgpu_bo_unreserve(*bo_ptr);
 273
 274         return 0;
 275 }
 276
 277 /**
 278  * amdgpu_bo_free_kernel - free BO for kernel use
 279  *
 280  * @bo: amdgpu BO to free
 281  *
 282  * unmaps and unpin a BO for kernel internal use.
 283  */
 284 void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
 285                            void **cpu_addr)
 286 {
 287         if (*bo == NULL)
 288                 return;
 289
 290         if (likely(amdgpu_bo_reserve(*bo, true) == 0)) {
 291                 if (cpu_addr)
 292                         amdgpu_bo_kunmap(*bo);
 293
 294                 amdgpu_bo_unpin(*bo);
 295                 amdgpu_bo_unreserve(*bo);
 296         }
 297         amdgpu_bo_unref(bo);
 298
 299         if (gpu_addr)
 300                 *gpu_addr = 0;
 301
 302         if (cpu_addr)
 303                 *cpu_addr = NULL;
 304 }
 305
 306 /* Validate bo size is bit bigger then the request domain */
 307 static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
 308                                           unsigned long size, u32 domain)
 309 {
 310         struct ttm_mem_type_manager *man = NULL;
 311
 312         /*
 313          * If GTT is part of requested domains the check must succeed to
 314          * allow fall back to GTT
 315          */
 316         if (domain & AMDGPU_GEM_DOMAIN_GTT) {
 317                 man = &adev->mman.bdev.man[TTM_PL_TT];
 318
 319                 if (size < (man->size << PAGE_SHIFT))
 320                         return true;
 321                 else
 322                         goto fail;
 323         }
 324
 325         if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
 326                 man = &adev->mman.bdev.man[TTM_PL_VRAM];
 327
 328                 if (size < (man->size << PAGE_SHIFT))
 329                         return true;
 330                 else
 331                         goto fail;
 332         }
 333
 334
 335         /* TODO add more domains checks, such as AMDGPU_GEM_DOMAIN_CPU */
 336         return true;
 337
 338 fail:
 339         DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size,
 340                   man->size << PAGE_SHIFT);
 341         return false;
 342 }
 343
 344 static int amdgpu_bo_do_create(struct amdgpu_device *adev, unsigned long size,
 345                                int byte_align, u32 domain,
 346                                u64 flags, enum ttm_bo_type type,
 347                                struct reservation_object *resv,
 348                                struct amdgpu_bo **bo_ptr)
 349 {
 350         struct ttm_operation_ctx ctx = {
 351                 .interruptible = (type != ttm_bo_type_kernel),
 352                 .no_wait_gpu = false,
 353                 .resv = resv,
 354                 .flags = TTM_OPT_FLAG_ALLOW_RES_EVICT
 355         };
 356         struct amdgpu_bo *bo;
 357         unsigned long page_align;
 358         size_t acc_size;
 359         int r;
 360
 361         page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
 362         size = ALIGN(size, PAGE_SIZE);
 363
 364         if (!amdgpu_bo_validate_size(adev, size, domain))
 365                 return -ENOMEM;
 366
 367         *bo_ptr = NULL;
 368
 369         acc_size = ttm_bo_dma_acc_size(&adev->mman.bdev, size,
 370                                        sizeof(struct amdgpu_bo));
 371
 372         bo = kzalloc(sizeof(struct amdgpu_bo), GFP_KERNEL);
 373         if (bo == NULL)
 374                 return -ENOMEM;
 375         drm_gem_private_object_init(adev->ddev, &bo->gem_base, size);
 376         INIT_LIST_HEAD(&bo->shadow_list);
 377         INIT_LIST_HEAD(&bo->va);
 378         bo->preferred_domains = domain & (AMDGPU_GEM_DOMAIN_VRAM |
 379                                          AMDGPU_GEM_DOMAIN_GTT |
 380                                          AMDGPU_GEM_DOMAIN_CPU |
 381                                          AMDGPU_GEM_DOMAIN_GDS |
 382                                          AMDGPU_GEM_DOMAIN_GWS |
 383                                          AMDGPU_GEM_DOMAIN_OA);
 384         bo->allowed_domains = bo->preferred_domains;
 385         if (type != ttm_bo_type_kernel &&
 386             bo->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
 387                 bo->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
 388
 389         bo->flags = flags;
 390
 391 #ifdef CONFIG_X86_32
 392         /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
 393          * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
 394          */
 395         bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 396 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
 397         /* Don't try to enable write-combining when it can't work, or things
 398          * may be slow
 399          * See https://bugs.freedesktop.org/show_bug.cgi?id=88758
 400          */
 401
 402 #ifndef CONFIG_COMPILE_TEST
 403 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
 404          thanks to write-combining
 405 #endif
 406
 407         if (bo->flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 408                 DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
 409                               "better performance thanks to write-combining\n");
 410         bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 411 #else
 412         /* For architectures that don't support WC memory,
 413          * mask out the WC flag from the BO
 414          */
 415         if (!drm_arch_can_wc_memory())
 416                 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 417 #endif
 418
 419         bo->tbo.bdev = &adev->mman.bdev;
 420         amdgpu_ttm_placement_from_domain(bo, domain);
 421
 422         r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, type,
 423                                  &bo->placement, page_align, &ctx, acc_size,
 424                                  NULL, resv, &amdgpu_ttm_bo_destroy);
 425         if (unlikely(r != 0))
 426                 return r;
 427
 428         if (adev->gmc.visible_vram_size < adev->gmc.real_vram_size &&
 429             bo->tbo.mem.mem_type == TTM_PL_VRAM &&
 430             bo->tbo.mem.start < adev->gmc.visible_vram_size >> PAGE_SHIFT)
 431                 amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved,
 432                                              ctx.bytes_moved);
 433         else
 434                 amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved, 0);
 435
 436         if (type == ttm_bo_type_kernel)
 437                 bo->tbo.priority = 1;
 438
 439         if (flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
 440             bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) {
 441                 struct dma_fence *fence;
 442
 443                 r = amdgpu_fill_buffer(bo, 0, bo->tbo.resv, &fence);
 444                 if (unlikely(r))
 445                         goto fail_unreserve;
 446
 447                 amdgpu_bo_fence(bo, fence, false);
 448                 dma_fence_put(bo->tbo.moving);
 449                 bo->tbo.moving = dma_fence_get(fence);
 450                 dma_fence_put(fence);
 451         }
 452         if (!resv)
 453                 amdgpu_bo_unreserve(bo);
 454         *bo_ptr = bo;
 455
 456         trace_amdgpu_bo_create(bo);
 457
 458         /* Treat CPU_ACCESS_REQUIRED only as a hint if given by UMD */
 459         if (type == ttm_bo_type_device)
 460                 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 461
 462         return 0;
 463
 464 fail_unreserve:
 465         if (!resv)
 466                 ww_mutex_unlock(&bo->tbo.resv->lock);
 467         amdgpu_bo_unref(&bo);
 468         return r;
 469 }
 470
 471 static int amdgpu_bo_create_shadow(struct amdgpu_device *adev,
 472                                    unsigned long size, int byte_align,
 473                                    struct amdgpu_bo *bo)
 474 {
 475         int r;
 476
 477         if (bo->shadow)
 478                 return 0;
 479
 480         r = amdgpu_bo_do_create(adev, size, byte_align, AMDGPU_GEM_DOMAIN_GTT,
 481                                 AMDGPU_GEM_CREATE_CPU_GTT_USWC |
 482                                 AMDGPU_GEM_CREATE_SHADOW,
 483                                 ttm_bo_type_kernel,
 484                                 bo->tbo.resv, &bo->shadow);
 485         if (!r) {
 486                 bo->shadow->parent = amdgpu_bo_ref(bo);
 487                 mutex_lock(&adev->shadow_list_lock);
 488                 list_add_tail(&bo->shadow_list, &adev->shadow_list);
 489                 mutex_unlock(&adev->shadow_list_lock);
 490         }
 491
 492         return r;
 493 }
 494
 495 int amdgpu_bo_create(struct amdgpu_device *adev, unsigned long size,
 496                      int byte_align, u32 domain,
 497                      u64 flags, enum ttm_bo_type type,
 498                      struct reservation_object *resv,
 499                      struct amdgpu_bo **bo_ptr)
 500 {
 501         uint64_t parent_flags = flags & ~AMDGPU_GEM_CREATE_SHADOW;
 502         int r;
 503
 504         r = amdgpu_bo_do_create(adev, size, byte_align, domain,
 505                                 parent_flags, type, resv, bo_ptr);
 506         if (r)
 507                 return r;
 508
 509         if ((flags & AMDGPU_GEM_CREATE_SHADOW) && amdgpu_need_backup(adev)) {
 510                 if (!resv)
 511                         WARN_ON(reservation_object_lock((*bo_ptr)->tbo.resv,
 512                                                         NULL));
 513
 514                 r = amdgpu_bo_create_shadow(adev, size, byte_align, (*bo_ptr));
 515
 516                 if (!resv)
 517                         reservation_object_unlock((*bo_ptr)->tbo.resv);
 518
 519                 if (r)
 520                         amdgpu_bo_unref(bo_ptr);
 521         }
 522
 523         return r;
 524 }
 525
 526 int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
 527                                struct amdgpu_ring *ring,
 528                                struct amdgpu_bo *bo,
 529                                struct reservation_object *resv,
 530                                struct dma_fence **fence,
 531                                bool direct)
 532
 533 {
 534         struct amdgpu_bo *shadow = bo->shadow;
 535         uint64_t bo_addr, shadow_addr;
 536         int r;
 537
 538         if (!shadow)
 539                 return -EINVAL;
 540
 541         bo_addr = amdgpu_bo_gpu_offset(bo);
 542         shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
 543
 544         r = reservation_object_reserve_shared(bo->tbo.resv);
 545         if (r)
 546                 goto err;
 547
 548         r = amdgpu_copy_buffer(ring, bo_addr, shadow_addr,
 549                                amdgpu_bo_size(bo), resv, fence,
 550                                direct, false);
 551         if (!r)
 552                 amdgpu_bo_fence(bo, *fence, true);
 553
 554 err:
 555         return r;
 556 }
 557
 558 int amdgpu_bo_validate(struct amdgpu_bo *bo)
 559 {
 560         struct ttm_operation_ctx ctx = { false, false };
 561         uint32_t domain;
 562         int r;
 563
 564         if (bo->pin_count)
 565                 return 0;
 566
 567         domain = bo->preferred_domains;
 568
 569 retry:
 570         amdgpu_ttm_placement_from_domain(bo, domain);
 571         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 572         if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
 573                 domain = bo->allowed_domains;
 574                 goto retry;
 575         }
 576
 577         return r;
 578 }
 579
 580 int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
 581                                   struct amdgpu_ring *ring,
 582                                   struct amdgpu_bo *bo,
 583                                   struct reservation_object *resv,
 584                                   struct dma_fence **fence,
 585                                   bool direct)
 586
 587 {
 588         struct amdgpu_bo *shadow = bo->shadow;
 589         uint64_t bo_addr, shadow_addr;
 590         int r;
 591
 592         if (!shadow)
 593                 return -EINVAL;
 594
 595         bo_addr = amdgpu_bo_gpu_offset(bo);
 596         shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
 597
 598         r = reservation_object_reserve_shared(bo->tbo.resv);
 599         if (r)
 600                 goto err;
 601
 602         r = amdgpu_copy_buffer(ring, shadow_addr, bo_addr,
 603                                amdgpu_bo_size(bo), resv, fence,
 604                                direct, false);
 605         if (!r)
 606                 amdgpu_bo_fence(bo, *fence, true);
 607
 608 err:
 609         return r;
 610 }
 611
 612 int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
 613 {
 614         void *kptr;
 615         long r;
 616
 617         if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 618                 return -EPERM;
 619
 620         kptr = amdgpu_bo_kptr(bo);
 621         if (kptr) {
 622                 if (ptr)
 623                         *ptr = kptr;
 624                 return 0;
 625         }
 626
 627         r = reservation_object_wait_timeout_rcu(bo->tbo.resv, false, false,
 628                                                 MAX_SCHEDULE_TIMEOUT);
 629         if (r < 0)
 630                 return r;
 631
 632         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 633         if (r)
 634                 return r;
 635
 636         if (ptr)
 637                 *ptr = amdgpu_bo_kptr(bo);
 638
 639         return 0;
 640 }
 641
 642 void *amdgpu_bo_kptr(struct amdgpu_bo *bo)
 643 {
 644         bool is_iomem;
 645
 646         return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 647 }
 648
 649 void amdgpu_bo_kunmap(struct amdgpu_bo *bo)
 650 {
 651         if (bo->kmap.bo)
 652                 ttm_bo_kunmap(&bo->kmap);
 653 }
 654
 655 struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo)
 656 {
 657         if (bo == NULL)
 658                 return NULL;
 659
 660         ttm_bo_reference(&bo->tbo);
 661         return bo;
 662 }
 663
 664 void amdgpu_bo_unref(struct amdgpu_bo **bo)
 665 {
 666         struct ttm_buffer_object *tbo;
 667
 668         if ((*bo) == NULL)
 669                 return;
 670
 671         tbo = &((*bo)->tbo);
 672         ttm_bo_unref(&tbo);
 673         if (tbo == NULL)
 674                 *bo = NULL;
 675 }
 676
 677 int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
 678                              u64 min_offset, u64 max_offset,
 679                              u64 *gpu_addr)
 680 {
 681         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 682         struct ttm_operation_ctx ctx = { false, false };
 683         int r, i;
 684
 685         if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
 686                 return -EPERM;
 687
 688         if (WARN_ON_ONCE(min_offset > max_offset))
 689                 return -EINVAL;
 690
 691         /* A shared bo cannot be migrated to VRAM */
 692         if (bo->prime_shared_count && (domain == AMDGPU_GEM_DOMAIN_VRAM))
 693                 return -EINVAL;
 694
 695         if (bo->pin_count) {
 696                 uint32_t mem_type = bo->tbo.mem.mem_type;
 697
 698                 if (!(domain & amdgpu_mem_type_to_domain(mem_type)))
 699                         return -EINVAL;
 700
 701                 bo->pin_count++;
 702                 if (gpu_addr)
 703                         *gpu_addr = amdgpu_bo_gpu_offset(bo);
 704
 705                 if (max_offset != 0) {
 706                         u64 domain_start = bo->tbo.bdev->man[mem_type].gpu_offset;
 707                         WARN_ON_ONCE(max_offset <
 708                                      (amdgpu_bo_gpu_offset(bo) - domain_start));
 709                 }
 710
 711                 return 0;
 712         }
 713
 714         bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
 715         /* force to pin into visible video ram */
 716         if (!(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS))
 717                 bo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 718         amdgpu_ttm_placement_from_domain(bo, domain);
 719         for (i = 0; i < bo->placement.num_placement; i++) {
 720                 unsigned fpfn, lpfn;
 721
 722                 fpfn = min_offset >> PAGE_SHIFT;
 723                 lpfn = max_offset >> PAGE_SHIFT;
 724
 725                 if (fpfn > bo->placements[i].fpfn)
 726                         bo->placements[i].fpfn = fpfn;
 727                 if (!bo->placements[i].lpfn ||
 728                     (lpfn && lpfn < bo->placements[i].lpfn))
 729                         bo->placements[i].lpfn = lpfn;
 730                 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
 731         }
 732
 733         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 734         if (unlikely(r)) {
 735                 dev_err(adev->dev, "%p pin failed\n", bo);
 736                 goto error;
 737         }
 738
 739         r = amdgpu_ttm_alloc_gart(&bo->tbo);
 740         if (unlikely(r)) {
 741                 dev_err(adev->dev, "%p bind failed\n", bo);
 742                 goto error;
 743         }
 744
 745         bo->pin_count = 1;
 746         if (gpu_addr != NULL)
 747                 *gpu_addr = amdgpu_bo_gpu_offset(bo);
 748
 749         domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
 750         if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
 751                 adev->vram_pin_size += amdgpu_bo_size(bo);
 752                 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 753                         adev->invisible_pin_size += amdgpu_bo_size(bo);
 754         } else if (domain == AMDGPU_GEM_DOMAIN_GTT) {
 755                 adev->gart_pin_size += amdgpu_bo_size(bo);
 756         }
 757
 758 error:
 759         return r;
 760 }
 761
 762 int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain, u64 *gpu_addr)
 763 {
 764         return amdgpu_bo_pin_restricted(bo, domain, 0, 0, gpu_addr);
 765 }
 766
 767 int amdgpu_bo_unpin(struct amdgpu_bo *bo)
 768 {
 769         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 770         struct ttm_operation_ctx ctx = { false, false };
 771         int r, i;
 772
 773         if (!bo->pin_count) {
 774                 dev_warn(adev->dev, "%p unpin not necessary\n", bo);
 775                 return 0;
 776         }
 777         bo->pin_count--;
 778         if (bo->pin_count)
 779                 return 0;
 780         for (i = 0; i < bo->placement.num_placement; i++) {
 781                 bo->placements[i].lpfn = 0;
 782                 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
 783         }
 784         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 785         if (unlikely(r)) {
 786                 dev_err(adev->dev, "%p validate failed for unpin\n", bo);
 787                 goto error;
 788         }
 789
 790         if (bo->tbo.mem.mem_type == TTM_PL_VRAM) {
 791                 adev->vram_pin_size -= amdgpu_bo_size(bo);
 792                 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 793                         adev->invisible_pin_size -= amdgpu_bo_size(bo);
 794         } else if (bo->tbo.mem.mem_type == TTM_PL_TT) {
 795                 adev->gart_pin_size -= amdgpu_bo_size(bo);
 796         }
 797
 798 error:
 799         return r;
 800 }
 801
 802 int amdgpu_bo_evict_vram(struct amdgpu_device *adev)
 803 {
 804         /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
 805         if (0 && (adev->flags & AMD_IS_APU)) {
 806                 /* Useless to evict on IGP chips */
 807                 return 0;
 808         }
 809         return ttm_bo_evict_mm(&adev->mman.bdev, TTM_PL_VRAM);
 810 }
 811
 812 static const char *amdgpu_vram_names[] = {
 813         "UNKNOWN",
 814         "GDDR1",
 815         "DDR2",
 816         "GDDR3",
 817         "GDDR4",
 818         "GDDR5",
 819         "HBM",
 820         "DDR3",
 821         "DDR4",
 822 };
 823
 824 int amdgpu_bo_init(struct amdgpu_device *adev)
 825 {
 826         /* reserve PAT memory space to WC for VRAM */
 827         arch_io_reserve_memtype_wc(adev->gmc.aper_base,
 828                                    adev->gmc.aper_size);
 829
 830         /* Add an MTRR for the VRAM */
 831         adev->gmc.vram_mtrr = arch_phys_wc_add(adev->gmc.aper_base,
 832                                               adev->gmc.aper_size);
 833         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 834                  adev->gmc.mc_vram_size >> 20,
 835                  (unsigned long long)adev->gmc.aper_size >> 20);
 836         DRM_INFO("RAM width %dbits %s\n",
 837                  adev->gmc.vram_width, amdgpu_vram_names[adev->gmc.vram_type]);
 838         return amdgpu_ttm_init(adev);
 839 }
 840
 841 void amdgpu_bo_fini(struct amdgpu_device *adev)
 842 {
 843         amdgpu_ttm_fini(adev);
 844         arch_phys_wc_del(adev->gmc.vram_mtrr);
 845         arch_io_free_memtype_wc(adev->gmc.aper_base, adev->gmc.aper_size);
 846 }
 847
 848 int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
 849                              struct vm_area_struct *vma)
 850 {
 851         return ttm_fbdev_mmap(vma, &bo->tbo);
 852 }
 853
 854 int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags)
 855 {
 856         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 857
 858         if (adev->family <= AMDGPU_FAMILY_CZ &&
 859             AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
 860                 return -EINVAL;
 861
 862         bo->tiling_flags = tiling_flags;
 863         return 0;
 864 }
 865
 866 void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
 867 {
 868         lockdep_assert_held(&bo->tbo.resv->lock.base);
 869
 870         if (tiling_flags)
 871                 *tiling_flags = bo->tiling_flags;
 872 }
 873
 874 int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
 875                             uint32_t metadata_size, uint64_t flags)
 876 {
 877         void *buffer;
 878
 879         if (!metadata_size) {
 880                 if (bo->metadata_size) {
 881                         kfree(bo->metadata);
 882                         bo->metadata = NULL;
 883                         bo->metadata_size = 0;
 884                 }
 885                 return 0;
 886         }
 887
 888         if (metadata == NULL)
 889                 return -EINVAL;
 890
 891         buffer = kmemdup(metadata, metadata_size, GFP_KERNEL);
 892         if (buffer == NULL)
 893                 return -ENOMEM;
 894
 895         kfree(bo->metadata);
 896         bo->metadata_flags = flags;
 897         bo->metadata = buffer;
 898         bo->metadata_size = metadata_size;
 899
 900         return 0;
 901 }
 902
 903 int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
 904                            size_t buffer_size, uint32_t *metadata_size,
 905                            uint64_t *flags)
 906 {
 907         if (!buffer && !metadata_size)
 908                 return -EINVAL;
 909
 910         if (buffer) {
 911                 if (buffer_size < bo->metadata_size)
 912                         return -EINVAL;
 913
 914                 if (bo->metadata_size)
 915                         memcpy(buffer, bo->metadata, bo->metadata_size);
 916         }
 917
 918         if (metadata_size)
 919                 *metadata_size = bo->metadata_size;
 920         if (flags)
 921                 *flags = bo->metadata_flags;
 922
 923         return 0;
 924 }
 925
 926 void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
 927                            bool evict,
 928                            struct ttm_mem_reg *new_mem)
 929 {
 930         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 931         struct amdgpu_bo *abo;
 932         struct ttm_mem_reg *old_mem = &bo->mem;
 933
 934         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
 935                 return;
 936
 937         abo = ttm_to_amdgpu_bo(bo);
 938         amdgpu_vm_bo_invalidate(adev, abo, evict);
 939
 940         amdgpu_bo_kunmap(abo);
 941
 942         /* remember the eviction */
 943         if (evict)
 944                 atomic64_inc(&adev->num_evictions);
 945
 946         /* update statistics */
 947         if (!new_mem)
 948                 return;
 949
 950         /* move_notify is called before move happens */
 951         trace_amdgpu_ttm_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
 952 }
 953
 954 int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 955 {
 956         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 957         struct ttm_operation_ctx ctx = { false, false };
 958         struct amdgpu_bo *abo;
 959         unsigned long offset, size;
 960         int r;
 961
 962         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
 963                 return 0;
 964
 965         abo = ttm_to_amdgpu_bo(bo);
 966
 967         /* Remember that this BO was accessed by the CPU */
 968         abo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 969
 970         if (bo->mem.mem_type != TTM_PL_VRAM)
 971                 return 0;
 972
 973         size = bo->mem.num_pages << PAGE_SHIFT;
 974         offset = bo->mem.start << PAGE_SHIFT;
 975         if ((offset + size) <= adev->gmc.visible_vram_size)
 976                 return 0;
 977
 978         /* Can't move a pinned BO to visible VRAM */
 979         if (abo->pin_count > 0)
 980                 return -EINVAL;
 981
 982         /* hurrah the memory is not visible ! */
 983         atomic64_inc(&adev->num_vram_cpu_page_faults);
 984         amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM |
 985                                          AMDGPU_GEM_DOMAIN_GTT);
 986
 987         /* Avoid costly evictions; only set GTT as a busy placement */
 988         abo->placement.num_busy_placement = 1;
 989         abo->placement.busy_placement = &abo->placements[1];
 990
 991         r = ttm_bo_validate(bo, &abo->placement, &ctx);
 992         if (unlikely(r != 0))
 993                 return r;
 994
 995         offset = bo->mem.start << PAGE_SHIFT;
 996         /* this should never happen */
 997         if (bo->mem.mem_type == TTM_PL_VRAM &&
 998             (offset + size) > adev->gmc.visible_vram_size)
 999                 return -EINVAL;
1000
1001         return 0;
1002 }
1003
1004 /**
1005  * amdgpu_bo_fence - add fence to buffer object
1006  *
1007  * @bo: buffer object in question
1008  * @fence: fence to add
1009  * @shared: true if fence should be added shared
1010  *
1011  */
1012 void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
1013                      bool shared)
1014 {
1015         struct reservation_object *resv = bo->tbo.resv;
1016
1017         if (shared)
1018                 reservation_object_add_shared_fence(resv, fence);
1019         else
1020                 reservation_object_add_excl_fence(resv, fence);
1021 }
1022
1023 /**
1024  * amdgpu_bo_gpu_offset - return GPU offset of bo
1025  * @bo: amdgpu object for which we query the offset
1026  *
1027  * Returns current GPU offset of the object.
1028  *
1029  * Note: object should either be pinned or reserved when calling this
1030  * function, it might be useful to add check for this for debugging.
1031  */
1032 u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
1033 {
1034         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_SYSTEM);
1035         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_TT &&
1036                      !amdgpu_gtt_mgr_has_gart_addr(&bo->tbo.mem));
1037         WARN_ON_ONCE(!ww_mutex_is_locked(&bo->tbo.resv->lock) &&
1038                      !bo->pin_count);
1039         WARN_ON_ONCE(bo->tbo.mem.start == AMDGPU_BO_INVALID_OFFSET);
1040         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_VRAM &&
1041                      !(bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS));
1042
1043         return bo->tbo.offset;
1044 }