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 static bool amdgpu_need_backup(struct amdgpu_device *adev)
  41 {
  42         if (adev->flags & AMD_IS_APU)
  43                 return false;
  44
  45         if (amdgpu_gpu_recovery == 0 ||
  46             (amdgpu_gpu_recovery == -1  && !amdgpu_sriov_vf(adev)))
  47                 return false;
  48
  49         return true;
  50 }
  51
  52 static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
  53 {
  54         struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
  55         struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
  56
  57         amdgpu_bo_kunmap(bo);
  58
  59         drm_gem_object_release(&bo->gem_base);
  60         amdgpu_bo_unref(&bo->parent);
  61         if (!list_empty(&bo->shadow_list)) {
  62                 mutex_lock(&adev->shadow_list_lock);
  63                 list_del_init(&bo->shadow_list);
  64                 mutex_unlock(&adev->shadow_list_lock);
  65         }
  66         kfree(bo->metadata);
  67         kfree(bo);
  68 }
  69
  70 bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo)
  71 {
  72         if (bo->destroy == &amdgpu_ttm_bo_destroy)
  73                 return true;
  74         return false;
  75 }
  76
  77 void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
  78 {
  79         struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
  80         struct ttm_placement *placement = &abo->placement;
  81         struct ttm_place *places = abo->placements;
  82         u64 flags = abo->flags;
  83         u32 c = 0;
  84
  85         if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
  86                 unsigned visible_pfn = adev->mc.visible_vram_size >> PAGE_SHIFT;
  87
  88                 places[c].fpfn = 0;
  89                 places[c].lpfn = 0;
  90                 places[c].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
  91                         TTM_PL_FLAG_VRAM;
  92
  93                 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
  94                         places[c].lpfn = visible_pfn;
  95                 else
  96                         places[c].flags |= TTM_PL_FLAG_TOPDOWN;
  97
  98                 if (flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
  99                         places[c].flags |= TTM_PL_FLAG_CONTIGUOUS;
 100                 c++;
 101         }
 102
 103         if (domain & AMDGPU_GEM_DOMAIN_GTT) {
 104                 places[c].fpfn = 0;
 105                 if (flags & AMDGPU_GEM_CREATE_SHADOW)
 106                         places[c].lpfn = adev->mc.gart_size >> PAGE_SHIFT;
 107                 else
 108                         places[c].lpfn = 0;
 109                 places[c].flags = TTM_PL_FLAG_TT;
 110                 if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 111                         places[c].flags |= TTM_PL_FLAG_WC |
 112                                 TTM_PL_FLAG_UNCACHED;
 113                 else
 114                         places[c].flags |= TTM_PL_FLAG_CACHED;
 115                 c++;
 116         }
 117
 118         if (domain & AMDGPU_GEM_DOMAIN_CPU) {
 119                 places[c].fpfn = 0;
 120                 places[c].lpfn = 0;
 121                 places[c].flags = TTM_PL_FLAG_SYSTEM;
 122                 if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 123                         places[c].flags |= TTM_PL_FLAG_WC |
 124                                 TTM_PL_FLAG_UNCACHED;
 125                 else
 126                         places[c].flags |= TTM_PL_FLAG_CACHED;
 127                 c++;
 128         }
 129
 130         if (domain & AMDGPU_GEM_DOMAIN_GDS) {
 131                 places[c].fpfn = 0;
 132                 places[c].lpfn = 0;
 133                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GDS;
 134                 c++;
 135         }
 136
 137         if (domain & AMDGPU_GEM_DOMAIN_GWS) {
 138                 places[c].fpfn = 0;
 139                 places[c].lpfn = 0;
 140                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GWS;
 141                 c++;
 142         }
 143
 144         if (domain & AMDGPU_GEM_DOMAIN_OA) {
 145                 places[c].fpfn = 0;
 146                 places[c].lpfn = 0;
 147                 places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_OA;
 148                 c++;
 149         }
 150
 151         if (!c) {
 152                 places[c].fpfn = 0;
 153                 places[c].lpfn = 0;
 154                 places[c].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
 155                 c++;
 156         }
 157
 158         placement->num_placement = c;
 159         placement->placement = places;
 160
 161         placement->num_busy_placement = c;
 162         placement->busy_placement = places;
 163 }
 164
 165 /**
 166  * amdgpu_bo_create_reserved - create reserved BO for kernel use
 167  *
 168  * @adev: amdgpu device object
 169  * @size: size for the new BO
 170  * @align: alignment for the new BO
 171  * @domain: where to place it
 172  * @bo_ptr: resulting BO
 173  * @gpu_addr: GPU addr of the pinned BO
 174  * @cpu_addr: optional CPU address mapping
 175  *
 176  * Allocates and pins a BO for kernel internal use, and returns it still
 177  * reserved.
 178  *
 179  * Returns 0 on success, negative error code otherwise.
 180  */
 181 int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
 182                               unsigned long size, int align,
 183                               u32 domain, struct amdgpu_bo **bo_ptr,
 184                               u64 *gpu_addr, void **cpu_addr)
 185 {
 186         bool free = false;
 187         int r;
 188
 189         if (!*bo_ptr) {
 190                 r = amdgpu_bo_create(adev, size, align, true, domain,
 191                                      AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
 192                                      AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,
 193                                      NULL, NULL, 0, bo_ptr);
 194                 if (r) {
 195                         dev_err(adev->dev, "(%d) failed to allocate kernel bo\n",
 196                                 r);
 197                         return r;
 198                 }
 199                 free = true;
 200         }
 201
 202         r = amdgpu_bo_reserve(*bo_ptr, false);
 203         if (r) {
 204                 dev_err(adev->dev, "(%d) failed to reserve kernel bo\n", r);
 205                 goto error_free;
 206         }
 207
 208         r = amdgpu_bo_pin(*bo_ptr, domain, gpu_addr);
 209         if (r) {
 210                 dev_err(adev->dev, "(%d) kernel bo pin failed\n", r);
 211                 goto error_unreserve;
 212         }
 213
 214         if (cpu_addr) {
 215                 r = amdgpu_bo_kmap(*bo_ptr, cpu_addr);
 216                 if (r) {
 217                         dev_err(adev->dev, "(%d) kernel bo map failed\n", r);
 218                         goto error_unreserve;
 219                 }
 220         }
 221
 222         return 0;
 223
 224 error_unreserve:
 225         amdgpu_bo_unreserve(*bo_ptr);
 226
 227 error_free:
 228         if (free)
 229                 amdgpu_bo_unref(bo_ptr);
 230
 231         return r;
 232 }
 233
 234 /**
 235  * amdgpu_bo_create_kernel - create BO for kernel use
 236  *
 237  * @adev: amdgpu device object
 238  * @size: size for the new BO
 239  * @align: alignment for the new BO
 240  * @domain: where to place it
 241  * @bo_ptr: resulting BO
 242  * @gpu_addr: GPU addr of the pinned BO
 243  * @cpu_addr: optional CPU address mapping
 244  *
 245  * Allocates and pins a BO for kernel internal use.
 246  *
 247  * Returns 0 on success, negative error code otherwise.
 248  */
 249 int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
 250                             unsigned long size, int align,
 251                             u32 domain, struct amdgpu_bo **bo_ptr,
 252                             u64 *gpu_addr, void **cpu_addr)
 253 {
 254         int r;
 255
 256         r = amdgpu_bo_create_reserved(adev, size, align, domain, bo_ptr,
 257                                       gpu_addr, cpu_addr);
 258
 259         if (r)
 260                 return r;
 261
 262         amdgpu_bo_unreserve(*bo_ptr);
 263
 264         return 0;
 265 }
 266
 267 /**
 268  * amdgpu_bo_free_kernel - free BO for kernel use
 269  *
 270  * @bo: amdgpu BO to free
 271  *
 272  * unmaps and unpin a BO for kernel internal use.
 273  */
 274 void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
 275                            void **cpu_addr)
 276 {
 277         if (*bo == NULL)
 278                 return;
 279
 280         if (likely(amdgpu_bo_reserve(*bo, true) == 0)) {
 281                 if (cpu_addr)
 282                         amdgpu_bo_kunmap(*bo);
 283
 284                 amdgpu_bo_unpin(*bo);
 285                 amdgpu_bo_unreserve(*bo);
 286         }
 287         amdgpu_bo_unref(bo);
 288
 289         if (gpu_addr)
 290                 *gpu_addr = 0;
 291
 292         if (cpu_addr)
 293                 *cpu_addr = NULL;
 294 }
 295
 296 /* Validate bo size is bit bigger then the request domain */
 297 static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
 298                                           unsigned long size, u32 domain)
 299 {
 300         struct ttm_mem_type_manager *man = NULL;
 301
 302         /*
 303          * If GTT is part of requested domains the check must succeed to
 304          * allow fall back to GTT
 305          */
 306         if (domain & AMDGPU_GEM_DOMAIN_GTT) {
 307                 man = &adev->mman.bdev.man[TTM_PL_TT];
 308
 309                 if (size < (man->size << PAGE_SHIFT))
 310                         return true;
 311                 else
 312                         goto fail;
 313         }
 314
 315         if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
 316                 man = &adev->mman.bdev.man[TTM_PL_VRAM];
 317
 318                 if (size < (man->size << PAGE_SHIFT))
 319                         return true;
 320                 else
 321                         goto fail;
 322         }
 323
 324
 325         /* TODO add more domains checks, such as AMDGPU_GEM_DOMAIN_CPU */
 326         return true;
 327
 328 fail:
 329         DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size,
 330                   man->size << PAGE_SHIFT);
 331         return false;
 332 }
 333
 334 static int amdgpu_bo_do_create(struct amdgpu_device *adev,
 335                                unsigned long size, int byte_align,
 336                                bool kernel, u32 domain, u64 flags,
 337                                struct sg_table *sg,
 338                                struct reservation_object *resv,
 339                                uint64_t init_value,
 340                                struct amdgpu_bo **bo_ptr)
 341 {
 342         struct ttm_operation_ctx ctx = {
 343                 .interruptible = !kernel,
 344                 .no_wait_gpu = false,
 345                 .allow_reserved_eviction = true,
 346                 .resv = resv
 347         };
 348         struct amdgpu_bo *bo;
 349         enum ttm_bo_type type;
 350         unsigned long page_align;
 351         size_t acc_size;
 352         int r;
 353
 354         page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
 355         size = ALIGN(size, PAGE_SIZE);
 356
 357         if (!amdgpu_bo_validate_size(adev, size, domain))
 358                 return -ENOMEM;
 359
 360         if (kernel) {
 361                 type = ttm_bo_type_kernel;
 362         } else if (sg) {
 363                 type = ttm_bo_type_sg;
 364         } else {
 365                 type = ttm_bo_type_device;
 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         r = drm_gem_object_init(adev->ddev, &bo->gem_base, size);
 376         if (unlikely(r)) {
 377                 kfree(bo);
 378                 return r;
 379         }
 380         INIT_LIST_HEAD(&bo->shadow_list);
 381         INIT_LIST_HEAD(&bo->va);
 382         bo->preferred_domains = domain & (AMDGPU_GEM_DOMAIN_VRAM |
 383                                          AMDGPU_GEM_DOMAIN_GTT |
 384                                          AMDGPU_GEM_DOMAIN_CPU |
 385                                          AMDGPU_GEM_DOMAIN_GDS |
 386                                          AMDGPU_GEM_DOMAIN_GWS |
 387                                          AMDGPU_GEM_DOMAIN_OA);
 388         bo->allowed_domains = bo->preferred_domains;
 389         if (!kernel && bo->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
 390                 bo->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
 391
 392         bo->flags = flags;
 393
 394 #ifdef CONFIG_X86_32
 395         /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
 396          * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
 397          */
 398         bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 399 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
 400         /* Don't try to enable write-combining when it can't work, or things
 401          * may be slow
 402          * See https://bugs.freedesktop.org/show_bug.cgi?id=88758
 403          */
 404
 405 #ifndef CONFIG_COMPILE_TEST
 406 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
 407          thanks to write-combining
 408 #endif
 409
 410         if (bo->flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 411                 DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
 412                               "better performance thanks to write-combining\n");
 413         bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 414 #else
 415         /* For architectures that don't support WC memory,
 416          * mask out the WC flag from the BO
 417          */
 418         if (!drm_arch_can_wc_memory())
 419                 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 420 #endif
 421
 422         bo->tbo.bdev = &adev->mman.bdev;
 423         amdgpu_ttm_placement_from_domain(bo, domain);
 424
 425         r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, type,
 426                                  &bo->placement, page_align, &ctx, NULL,
 427                                  acc_size, sg, resv, &amdgpu_ttm_bo_destroy);
 428         if (unlikely(r != 0))
 429                 return r;
 430
 431         if (adev->mc.visible_vram_size < adev->mc.real_vram_size &&
 432             bo->tbo.mem.mem_type == TTM_PL_VRAM &&
 433             bo->tbo.mem.start < adev->mc.visible_vram_size >> PAGE_SHIFT)
 434                 amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved,
 435                                              ctx.bytes_moved);
 436         else
 437                 amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved, 0);
 438
 439         if (kernel)
 440                 bo->tbo.priority = 1;
 441
 442         if (flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
 443             bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) {
 444                 struct dma_fence *fence;
 445
 446                 r = amdgpu_fill_buffer(bo, init_value, bo->tbo.resv, &fence);
 447                 if (unlikely(r))
 448                         goto fail_unreserve;
 449
 450                 amdgpu_bo_fence(bo, fence, false);
 451                 dma_fence_put(bo->tbo.moving);
 452                 bo->tbo.moving = dma_fence_get(fence);
 453                 dma_fence_put(fence);
 454         }
 455         if (!resv)
 456                 amdgpu_bo_unreserve(bo);
 457         *bo_ptr = bo;
 458
 459         trace_amdgpu_bo_create(bo);
 460
 461         /* Treat CPU_ACCESS_REQUIRED only as a hint if given by UMD */
 462         if (type == ttm_bo_type_device)
 463                 bo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 464
 465         return 0;
 466
 467 fail_unreserve:
 468         if (!resv)
 469                 ww_mutex_unlock(&bo->tbo.resv->lock);
 470         amdgpu_bo_unref(&bo);
 471         return r;
 472 }
 473
 474 static int amdgpu_bo_create_shadow(struct amdgpu_device *adev,
 475                                    unsigned long size, int byte_align,
 476                                    struct amdgpu_bo *bo)
 477 {
 478         int r;
 479
 480         if (bo->shadow)
 481                 return 0;
 482
 483         r = amdgpu_bo_do_create(adev, size, byte_align, true,
 484                                 AMDGPU_GEM_DOMAIN_GTT,
 485                                 AMDGPU_GEM_CREATE_CPU_GTT_USWC |
 486                                 AMDGPU_GEM_CREATE_SHADOW,
 487                                 NULL, bo->tbo.resv, 0,
 488                                 &bo->shadow);
 489         if (!r) {
 490                 bo->shadow->parent = amdgpu_bo_ref(bo);
 491                 mutex_lock(&adev->shadow_list_lock);
 492                 list_add_tail(&bo->shadow_list, &adev->shadow_list);
 493                 mutex_unlock(&adev->shadow_list_lock);
 494         }
 495
 496         return r;
 497 }
 498
 499 /* init_value will only take effect when flags contains
 500  * AMDGPU_GEM_CREATE_VRAM_CLEARED.
 501  */
 502 int amdgpu_bo_create(struct amdgpu_device *adev,
 503                      unsigned long size, int byte_align,
 504                      bool kernel, u32 domain, u64 flags,
 505                      struct sg_table *sg,
 506                      struct reservation_object *resv,
 507                      uint64_t init_value,
 508                      struct amdgpu_bo **bo_ptr)
 509 {
 510         uint64_t parent_flags = flags & ~AMDGPU_GEM_CREATE_SHADOW;
 511         int r;
 512
 513         r = amdgpu_bo_do_create(adev, size, byte_align, kernel, domain,
 514                                 parent_flags, sg, resv, init_value, bo_ptr);
 515         if (r)
 516                 return r;
 517
 518         if ((flags & AMDGPU_GEM_CREATE_SHADOW) && amdgpu_need_backup(adev)) {
 519                 if (!resv)
 520                         WARN_ON(reservation_object_lock((*bo_ptr)->tbo.resv,
 521                                                         NULL));
 522
 523                 r = amdgpu_bo_create_shadow(adev, size, byte_align, (*bo_ptr));
 524
 525                 if (!resv)
 526                         reservation_object_unlock((*bo_ptr)->tbo.resv);
 527
 528                 if (r)
 529                         amdgpu_bo_unref(bo_ptr);
 530         }
 531
 532         return r;
 533 }
 534
 535 int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
 536                                struct amdgpu_ring *ring,
 537                                struct amdgpu_bo *bo,
 538                                struct reservation_object *resv,
 539                                struct dma_fence **fence,
 540                                bool direct)
 541
 542 {
 543         struct amdgpu_bo *shadow = bo->shadow;
 544         uint64_t bo_addr, shadow_addr;
 545         int r;
 546
 547         if (!shadow)
 548                 return -EINVAL;
 549
 550         bo_addr = amdgpu_bo_gpu_offset(bo);
 551         shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
 552
 553         r = reservation_object_reserve_shared(bo->tbo.resv);
 554         if (r)
 555                 goto err;
 556
 557         r = amdgpu_copy_buffer(ring, bo_addr, shadow_addr,
 558                                amdgpu_bo_size(bo), resv, fence,
 559                                direct, false);
 560         if (!r)
 561                 amdgpu_bo_fence(bo, *fence, true);
 562
 563 err:
 564         return r;
 565 }
 566
 567 int amdgpu_bo_validate(struct amdgpu_bo *bo)
 568 {
 569         struct ttm_operation_ctx ctx = { false, false };
 570         uint32_t domain;
 571         int r;
 572
 573         if (bo->pin_count)
 574                 return 0;
 575
 576         domain = bo->preferred_domains;
 577
 578 retry:
 579         amdgpu_ttm_placement_from_domain(bo, domain);
 580         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 581         if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
 582                 domain = bo->allowed_domains;
 583                 goto retry;
 584         }
 585
 586         return r;
 587 }
 588
 589 int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
 590                                   struct amdgpu_ring *ring,
 591                                   struct amdgpu_bo *bo,
 592                                   struct reservation_object *resv,
 593                                   struct dma_fence **fence,
 594                                   bool direct)
 595
 596 {
 597         struct amdgpu_bo *shadow = bo->shadow;
 598         uint64_t bo_addr, shadow_addr;
 599         int r;
 600
 601         if (!shadow)
 602                 return -EINVAL;
 603
 604         bo_addr = amdgpu_bo_gpu_offset(bo);
 605         shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
 606
 607         r = reservation_object_reserve_shared(bo->tbo.resv);
 608         if (r)
 609                 goto err;
 610
 611         r = amdgpu_copy_buffer(ring, shadow_addr, bo_addr,
 612                                amdgpu_bo_size(bo), resv, fence,
 613                                direct, false);
 614         if (!r)
 615                 amdgpu_bo_fence(bo, *fence, true);
 616
 617 err:
 618         return r;
 619 }
 620
 621 int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
 622 {
 623         void *kptr;
 624         long r;
 625
 626         if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 627                 return -EPERM;
 628
 629         kptr = amdgpu_bo_kptr(bo);
 630         if (kptr) {
 631                 if (ptr)
 632                         *ptr = kptr;
 633                 return 0;
 634         }
 635
 636         r = reservation_object_wait_timeout_rcu(bo->tbo.resv, false, false,
 637                                                 MAX_SCHEDULE_TIMEOUT);
 638         if (r < 0)
 639                 return r;
 640
 641         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 642         if (r)
 643                 return r;
 644
 645         if (ptr)
 646                 *ptr = amdgpu_bo_kptr(bo);
 647
 648         return 0;
 649 }
 650
 651 void *amdgpu_bo_kptr(struct amdgpu_bo *bo)
 652 {
 653         bool is_iomem;
 654
 655         return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 656 }
 657
 658 void amdgpu_bo_kunmap(struct amdgpu_bo *bo)
 659 {
 660         if (bo->kmap.bo)
 661                 ttm_bo_kunmap(&bo->kmap);
 662 }
 663
 664 struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo)
 665 {
 666         if (bo == NULL)
 667                 return NULL;
 668
 669         ttm_bo_reference(&bo->tbo);
 670         return bo;
 671 }
 672
 673 void amdgpu_bo_unref(struct amdgpu_bo **bo)
 674 {
 675         struct ttm_buffer_object *tbo;
 676
 677         if ((*bo) == NULL)
 678                 return;
 679
 680         tbo = &((*bo)->tbo);
 681         ttm_bo_unref(&tbo);
 682         if (tbo == NULL)
 683                 *bo = NULL;
 684 }
 685
 686 int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
 687                              u64 min_offset, u64 max_offset,
 688                              u64 *gpu_addr)
 689 {
 690         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 691         struct ttm_operation_ctx ctx = { false, false };
 692         int r, i;
 693
 694         if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
 695                 return -EPERM;
 696
 697         if (WARN_ON_ONCE(min_offset > max_offset))
 698                 return -EINVAL;
 699
 700         /* A shared bo cannot be migrated to VRAM */
 701         if (bo->prime_shared_count && (domain == AMDGPU_GEM_DOMAIN_VRAM))
 702                 return -EINVAL;
 703
 704         if (bo->pin_count) {
 705                 uint32_t mem_type = bo->tbo.mem.mem_type;
 706
 707                 if (!(domain & amdgpu_mem_type_to_domain(mem_type)))
 708                         return -EINVAL;
 709
 710                 bo->pin_count++;
 711                 if (gpu_addr)
 712                         *gpu_addr = amdgpu_bo_gpu_offset(bo);
 713
 714                 if (max_offset != 0) {
 715                         u64 domain_start = bo->tbo.bdev->man[mem_type].gpu_offset;
 716                         WARN_ON_ONCE(max_offset <
 717                                      (amdgpu_bo_gpu_offset(bo) - domain_start));
 718                 }
 719
 720                 return 0;
 721         }
 722
 723         bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
 724         /* force to pin into visible video ram */
 725         if (!(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS))
 726                 bo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 727         amdgpu_ttm_placement_from_domain(bo, domain);
 728         for (i = 0; i < bo->placement.num_placement; i++) {
 729                 unsigned fpfn, lpfn;
 730
 731                 fpfn = min_offset >> PAGE_SHIFT;
 732                 lpfn = max_offset >> PAGE_SHIFT;
 733
 734                 if (fpfn > bo->placements[i].fpfn)
 735                         bo->placements[i].fpfn = fpfn;
 736                 if (!bo->placements[i].lpfn ||
 737                     (lpfn && lpfn < bo->placements[i].lpfn))
 738                         bo->placements[i].lpfn = lpfn;
 739                 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
 740         }
 741
 742         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 743         if (unlikely(r)) {
 744                 dev_err(adev->dev, "%p pin failed\n", bo);
 745                 goto error;
 746         }
 747
 748         r = amdgpu_ttm_alloc_gart(&bo->tbo);
 749         if (unlikely(r)) {
 750                 dev_err(adev->dev, "%p bind failed\n", bo);
 751                 goto error;
 752         }
 753
 754         bo->pin_count = 1;
 755         if (gpu_addr != NULL)
 756                 *gpu_addr = amdgpu_bo_gpu_offset(bo);
 757
 758         domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
 759         if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
 760                 adev->vram_pin_size += amdgpu_bo_size(bo);
 761                 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 762                         adev->invisible_pin_size += amdgpu_bo_size(bo);
 763         } else if (domain == AMDGPU_GEM_DOMAIN_GTT) {
 764                 adev->gart_pin_size += amdgpu_bo_size(bo);
 765         }
 766
 767 error:
 768         return r;
 769 }
 770
 771 int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain, u64 *gpu_addr)
 772 {
 773         return amdgpu_bo_pin_restricted(bo, domain, 0, 0, gpu_addr);
 774 }
 775
 776 int amdgpu_bo_unpin(struct amdgpu_bo *bo)
 777 {
 778         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 779         struct ttm_operation_ctx ctx = { false, false };
 780         int r, i;
 781
 782         if (!bo->pin_count) {
 783                 dev_warn(adev->dev, "%p unpin not necessary\n", bo);
 784                 return 0;
 785         }
 786         bo->pin_count--;
 787         if (bo->pin_count)
 788                 return 0;
 789         for (i = 0; i < bo->placement.num_placement; i++) {
 790                 bo->placements[i].lpfn = 0;
 791                 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
 792         }
 793         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 794         if (unlikely(r)) {
 795                 dev_err(adev->dev, "%p validate failed for unpin\n", bo);
 796                 goto error;
 797         }
 798
 799         if (bo->tbo.mem.mem_type == TTM_PL_VRAM) {
 800                 adev->vram_pin_size -= amdgpu_bo_size(bo);
 801                 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 802                         adev->invisible_pin_size -= amdgpu_bo_size(bo);
 803         } else if (bo->tbo.mem.mem_type == TTM_PL_TT) {
 804                 adev->gart_pin_size -= amdgpu_bo_size(bo);
 805         }
 806
 807 error:
 808         return r;
 809 }
 810
 811 int amdgpu_bo_evict_vram(struct amdgpu_device *adev)
 812 {
 813         /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
 814         if (0 && (adev->flags & AMD_IS_APU)) {
 815                 /* Useless to evict on IGP chips */
 816                 return 0;
 817         }
 818         return ttm_bo_evict_mm(&adev->mman.bdev, TTM_PL_VRAM);
 819 }
 820
 821 static const char *amdgpu_vram_names[] = {
 822         "UNKNOWN",
 823         "GDDR1",
 824         "DDR2",
 825         "GDDR3",
 826         "GDDR4",
 827         "GDDR5",
 828         "HBM",
 829         "DDR3"
 830 };
 831
 832 int amdgpu_bo_init(struct amdgpu_device *adev)
 833 {
 834         /* reserve PAT memory space to WC for VRAM */
 835         arch_io_reserve_memtype_wc(adev->mc.aper_base,
 836                                    adev->mc.aper_size);
 837
 838         /* Add an MTRR for the VRAM */
 839         adev->mc.vram_mtrr = arch_phys_wc_add(adev->mc.aper_base,
 840                                               adev->mc.aper_size);
 841         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 842                  adev->mc.mc_vram_size >> 20,
 843                  (unsigned long long)adev->mc.aper_size >> 20);
 844         DRM_INFO("RAM width %dbits %s\n",
 845                  adev->mc.vram_width, amdgpu_vram_names[adev->mc.vram_type]);
 846         return amdgpu_ttm_init(adev);
 847 }
 848
 849 void amdgpu_bo_fini(struct amdgpu_device *adev)
 850 {
 851         amdgpu_ttm_fini(adev);
 852         arch_phys_wc_del(adev->mc.vram_mtrr);
 853         arch_io_free_memtype_wc(adev->mc.aper_base, adev->mc.aper_size);
 854 }
 855
 856 int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
 857                              struct vm_area_struct *vma)
 858 {
 859         return ttm_fbdev_mmap(vma, &bo->tbo);
 860 }
 861
 862 int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags)
 863 {
 864         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 865
 866         if (adev->family <= AMDGPU_FAMILY_CZ &&
 867             AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
 868                 return -EINVAL;
 869
 870         bo->tiling_flags = tiling_flags;
 871         return 0;
 872 }
 873
 874 void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
 875 {
 876         lockdep_assert_held(&bo->tbo.resv->lock.base);
 877
 878         if (tiling_flags)
 879                 *tiling_flags = bo->tiling_flags;
 880 }
 881
 882 int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
 883                             uint32_t metadata_size, uint64_t flags)
 884 {
 885         void *buffer;
 886
 887         if (!metadata_size) {
 888                 if (bo->metadata_size) {
 889                         kfree(bo->metadata);
 890                         bo->metadata = NULL;
 891                         bo->metadata_size = 0;
 892                 }
 893                 return 0;
 894         }
 895
 896         if (metadata == NULL)
 897                 return -EINVAL;
 898
 899         buffer = kmemdup(metadata, metadata_size, GFP_KERNEL);
 900         if (buffer == NULL)
 901                 return -ENOMEM;
 902
 903         kfree(bo->metadata);
 904         bo->metadata_flags = flags;
 905         bo->metadata = buffer;
 906         bo->metadata_size = metadata_size;
 907
 908         return 0;
 909 }
 910
 911 int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
 912                            size_t buffer_size, uint32_t *metadata_size,
 913                            uint64_t *flags)
 914 {
 915         if (!buffer && !metadata_size)
 916                 return -EINVAL;
 917
 918         if (buffer) {
 919                 if (buffer_size < bo->metadata_size)
 920                         return -EINVAL;
 921
 922                 if (bo->metadata_size)
 923                         memcpy(buffer, bo->metadata, bo->metadata_size);
 924         }
 925
 926         if (metadata_size)
 927                 *metadata_size = bo->metadata_size;
 928         if (flags)
 929                 *flags = bo->metadata_flags;
 930
 931         return 0;
 932 }
 933
 934 void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
 935                            bool evict,
 936                            struct ttm_mem_reg *new_mem)
 937 {
 938         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 939         struct amdgpu_bo *abo;
 940         struct ttm_mem_reg *old_mem = &bo->mem;
 941
 942         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
 943                 return;
 944
 945         abo = ttm_to_amdgpu_bo(bo);
 946         amdgpu_vm_bo_invalidate(adev, abo, evict);
 947
 948         amdgpu_bo_kunmap(abo);
 949
 950         /* remember the eviction */
 951         if (evict)
 952                 atomic64_inc(&adev->num_evictions);
 953
 954         /* update statistics */
 955         if (!new_mem)
 956                 return;
 957
 958         /* move_notify is called before move happens */
 959         trace_amdgpu_ttm_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
 960 }
 961
 962 int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 963 {
 964         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 965         struct ttm_operation_ctx ctx = { false, false };
 966         struct amdgpu_bo *abo;
 967         unsigned long offset, size;
 968         int r;
 969
 970         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
 971                 return 0;
 972
 973         abo = ttm_to_amdgpu_bo(bo);
 974
 975         /* Remember that this BO was accessed by the CPU */
 976         abo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 977
 978         if (bo->mem.mem_type != TTM_PL_VRAM)
 979                 return 0;
 980
 981         size = bo->mem.num_pages << PAGE_SHIFT;
 982         offset = bo->mem.start << PAGE_SHIFT;
 983         if ((offset + size) <= adev->mc.visible_vram_size)
 984                 return 0;
 985
 986         /* Can't move a pinned BO to visible VRAM */
 987         if (abo->pin_count > 0)
 988                 return -EINVAL;
 989
 990         /* hurrah the memory is not visible ! */
 991         atomic64_inc(&adev->num_vram_cpu_page_faults);
 992         amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM |
 993                                          AMDGPU_GEM_DOMAIN_GTT);
 994
 995         /* Avoid costly evictions; only set GTT as a busy placement */
 996         abo->placement.num_busy_placement = 1;
 997         abo->placement.busy_placement = &abo->placements[1];
 998
 999         r = ttm_bo_validate(bo, &abo->placement, &ctx);
1000         if (unlikely(r != 0))
1001                 return r;
1002
1003         offset = bo->mem.start << PAGE_SHIFT;
1004         /* this should never happen */
1005         if (bo->mem.mem_type == TTM_PL_VRAM &&
1006             (offset + size) > adev->mc.visible_vram_size)
1007                 return -EINVAL;
1008
1009         return 0;
1010 }
1011
1012 /**
1013  * amdgpu_bo_fence - add fence to buffer object
1014  *
1015  * @bo: buffer object in question
1016  * @fence: fence to add
1017  * @shared: true if fence should be added shared
1018  *
1019  */
1020 void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
1021                      bool shared)
1022 {
1023         struct reservation_object *resv = bo->tbo.resv;
1024
1025         if (shared)
1026                 reservation_object_add_shared_fence(resv, fence);
1027         else
1028                 reservation_object_add_excl_fence(resv, fence);
1029 }
1030
1031 /**
1032  * amdgpu_bo_gpu_offset - return GPU offset of bo
1033  * @bo: amdgpu object for which we query the offset
1034  *
1035  * Returns current GPU offset of the object.
1036  *
1037  * Note: object should either be pinned or reserved when calling this
1038  * function, it might be useful to add check for this for debugging.
1039  */
1040 u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
1041 {
1042         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_SYSTEM);
1043         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_TT &&
1044                      !amdgpu_gtt_mgr_has_gart_addr(&bo->tbo.mem));
1045         WARN_ON_ONCE(!ww_mutex_is_locked(&bo->tbo.resv->lock) &&
1046                      !bo->pin_count);
1047         WARN_ON_ONCE(bo->tbo.mem.start == AMDGPU_BO_INVALID_OFFSET);
1048         WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_VRAM &&
1049                      !(bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS));
1050
1051         return bo->tbo.offset;
1052 }