drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.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 <ttm/ttm_bo_api.h>
  33 #include <ttm/ttm_bo_driver.h>
  34 #include <ttm/ttm_placement.h>
  35 #include <ttm/ttm_module.h>
  36 #include <ttm/ttm_page_alloc.h>
  37 #include <ttm/ttm_memory.h>
  38 #include <drm/drmP.h>
  39 #include <drm/amdgpu_drm.h>
  40 #include <linux/seq_file.h>
  41 #include <linux/slab.h>
  42 #include <linux/swiotlb.h>
  43 #include <linux/swap.h>
  44 #include <linux/pagemap.h>
  45 #include <linux/debugfs.h>
  46 #include "amdgpu.h"
  47 #include "bif/bif_4_1_d.h"
  48
  49 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
  50
  51 static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev);
  52 static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev);
  53
  54 static struct amdgpu_device *amdgpu_get_adev(struct ttm_bo_device *bdev)
  55 {
  56         struct amdgpu_mman *mman;
  57         struct amdgpu_device *adev;
  58
  59         mman = container_of(bdev, struct amdgpu_mman, bdev);
  60         adev = container_of(mman, struct amdgpu_device, mman);
  61         return adev;
  62 }
  63
  64
  65 /*
  66  * Global memory.
  67  */
  68 static int amdgpu_ttm_mem_global_init(struct drm_global_reference *ref)
  69 {
  70         return ttm_mem_global_init(ref->object);
  71 }
  72
  73 static void amdgpu_ttm_mem_global_release(struct drm_global_reference *ref)
  74 {
  75         ttm_mem_global_release(ref->object);
  76 }
  77
  78 int amdgpu_ttm_global_init(struct amdgpu_device *adev)
  79 {
  80         struct drm_global_reference *global_ref;
  81         struct amdgpu_ring *ring;
  82         struct amd_sched_rq *rq;
  83         int r;
  84
  85         adev->mman.mem_global_referenced = false;
  86         global_ref = &adev->mman.mem_global_ref;
  87         global_ref->global_type = DRM_GLOBAL_TTM_MEM;
  88         global_ref->size = sizeof(struct ttm_mem_global);
  89         global_ref->init = &amdgpu_ttm_mem_global_init;
  90         global_ref->release = &amdgpu_ttm_mem_global_release;
  91         r = drm_global_item_ref(global_ref);
  92         if (r) {
  93                 DRM_ERROR("Failed setting up TTM memory accounting "
  94                           "subsystem.\n");
  95                 goto error_mem;
  96         }
  97
  98         adev->mman.bo_global_ref.mem_glob =
  99                 adev->mman.mem_global_ref.object;
 100         global_ref = &adev->mman.bo_global_ref.ref;
 101         global_ref->global_type = DRM_GLOBAL_TTM_BO;
 102         global_ref->size = sizeof(struct ttm_bo_global);
 103         global_ref->init = &ttm_bo_global_init;
 104         global_ref->release = &ttm_bo_global_release;
 105         r = drm_global_item_ref(global_ref);
 106         if (r) {
 107                 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
 108                 goto error_bo;
 109         }
 110
 111         ring = adev->mman.buffer_funcs_ring;
 112         rq = &ring->sched.sched_rq[AMD_SCHED_PRIORITY_KERNEL];
 113         r = amd_sched_entity_init(&ring->sched, &adev->mman.entity,
 114                                   rq, amdgpu_sched_jobs);
 115         if (r) {
 116                 DRM_ERROR("Failed setting up TTM BO move run queue.\n");
 117                 goto error_entity;
 118         }
 119
 120         adev->mman.mem_global_referenced = true;
 121
 122         return 0;
 123
 124 error_entity:
 125         drm_global_item_unref(&adev->mman.bo_global_ref.ref);
 126 error_bo:
 127         drm_global_item_unref(&adev->mman.mem_global_ref);
 128 error_mem:
 129         return r;
 130 }
 131
 132 static void amdgpu_ttm_global_fini(struct amdgpu_device *adev)
 133 {
 134         if (adev->mman.mem_global_referenced) {
 135                 amd_sched_entity_fini(adev->mman.entity.sched,
 136                                       &adev->mman.entity);
 137                 drm_global_item_unref(&adev->mman.bo_global_ref.ref);
 138                 drm_global_item_unref(&adev->mman.mem_global_ref);
 139                 adev->mman.mem_global_referenced = false;
 140         }
 141 }
 142
 143 static int amdgpu_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
 144 {
 145         return 0;
 146 }
 147
 148 static int amdgpu_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
 149                                 struct ttm_mem_type_manager *man)
 150 {
 151         struct amdgpu_device *adev;
 152
 153         adev = amdgpu_get_adev(bdev);
 154
 155         switch (type) {
 156         case TTM_PL_SYSTEM:
 157                 /* System memory */
 158                 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
 159                 man->available_caching = TTM_PL_MASK_CACHING;
 160                 man->default_caching = TTM_PL_FLAG_CACHED;
 161                 break;
 162         case TTM_PL_TT:
 163                 man->func = &amdgpu_gtt_mgr_func;
 164                 man->gpu_offset = adev->mc.gtt_start;
 165                 man->available_caching = TTM_PL_MASK_CACHING;
 166                 man->default_caching = TTM_PL_FLAG_CACHED;
 167                 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA;
 168                 break;
 169         case TTM_PL_VRAM:
 170                 /* "On-card" video ram */
 171                 man->func = &ttm_bo_manager_func;
 172                 man->gpu_offset = adev->mc.vram_start;
 173                 man->flags = TTM_MEMTYPE_FLAG_FIXED |
 174                              TTM_MEMTYPE_FLAG_MAPPABLE;
 175                 man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
 176                 man->default_caching = TTM_PL_FLAG_WC;
 177                 break;
 178         case AMDGPU_PL_GDS:
 179         case AMDGPU_PL_GWS:
 180         case AMDGPU_PL_OA:
 181                 /* On-chip GDS memory*/
 182                 man->func = &ttm_bo_manager_func;
 183                 man->gpu_offset = 0;
 184                 man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_CMA;
 185                 man->available_caching = TTM_PL_FLAG_UNCACHED;
 186                 man->default_caching = TTM_PL_FLAG_UNCACHED;
 187                 break;
 188         default:
 189                 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
 190                 return -EINVAL;
 191         }
 192         return 0;
 193 }
 194
 195 static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
 196                                 struct ttm_placement *placement)
 197 {
 198         struct amdgpu_bo *abo;
 199         static struct ttm_place placements = {
 200                 .fpfn = 0,
 201                 .lpfn = 0,
 202                 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
 203         };
 204         unsigned i;
 205
 206         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo)) {
 207                 placement->placement = &placements;
 208                 placement->busy_placement = &placements;
 209                 placement->num_placement = 1;
 210                 placement->num_busy_placement = 1;
 211                 return;
 212         }
 213         abo = container_of(bo, struct amdgpu_bo, tbo);
 214         switch (bo->mem.mem_type) {
 215         case TTM_PL_VRAM:
 216                 if (abo->adev->mman.buffer_funcs_ring->ready == false) {
 217                         amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_CPU);
 218                 } else {
 219                         amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT);
 220                         for (i = 0; i < abo->placement.num_placement; ++i) {
 221                                 if (!(abo->placements[i].flags &
 222                                       TTM_PL_FLAG_TT))
 223                                         continue;
 224
 225                                 if (abo->placements[i].lpfn)
 226                                         continue;
 227
 228                                 /* set an upper limit to force directly
 229                                  * allocating address space for the BO.
 230                                  */
 231                                 abo->placements[i].lpfn =
 232                                         abo->adev->mc.gtt_size >> PAGE_SHIFT;
 233                         }
 234                 }
 235                 break;
 236         case TTM_PL_TT:
 237         default:
 238                 amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_CPU);
 239         }
 240         *placement = abo->placement;
 241 }
 242
 243 static int amdgpu_verify_access(struct ttm_buffer_object *bo, struct file *filp)
 244 {
 245         struct amdgpu_bo *abo = container_of(bo, struct amdgpu_bo, tbo);
 246
 247         if (amdgpu_ttm_tt_get_usermm(bo->ttm))
 248                 return -EPERM;
 249         return drm_vma_node_verify_access(&abo->gem_base.vma_node,
 250                                           filp->private_data);
 251 }
 252
 253 static void amdgpu_move_null(struct ttm_buffer_object *bo,
 254                              struct ttm_mem_reg *new_mem)
 255 {
 256         struct ttm_mem_reg *old_mem = &bo->mem;
 257
 258         BUG_ON(old_mem->mm_node != NULL);
 259         *old_mem = *new_mem;
 260         new_mem->mm_node = NULL;
 261 }
 262
 263 static int amdgpu_move_blit(struct ttm_buffer_object *bo,
 264                         bool evict, bool no_wait_gpu,
 265                         struct ttm_mem_reg *new_mem,
 266                         struct ttm_mem_reg *old_mem)
 267 {
 268         struct amdgpu_device *adev;
 269         struct amdgpu_ring *ring;
 270         uint64_t old_start, new_start;
 271         struct fence *fence;
 272         int r;
 273
 274         adev = amdgpu_get_adev(bo->bdev);
 275         ring = adev->mman.buffer_funcs_ring;
 276
 277         switch (old_mem->mem_type) {
 278         case TTM_PL_TT:
 279                 r = amdgpu_ttm_bind(bo, old_mem);
 280                 if (r)
 281                         return r;
 282
 283         case TTM_PL_VRAM:
 284                 old_start = (u64)old_mem->start << PAGE_SHIFT;
 285                 old_start += bo->bdev->man[old_mem->mem_type].gpu_offset;
 286                 break;
 287         default:
 288                 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
 289                 return -EINVAL;
 290         }
 291         switch (new_mem->mem_type) {
 292         case TTM_PL_TT:
 293                 r = amdgpu_ttm_bind(bo, new_mem);
 294                 if (r)
 295                         return r;
 296
 297         case TTM_PL_VRAM:
 298                 new_start = (u64)new_mem->start << PAGE_SHIFT;
 299                 new_start += bo->bdev->man[new_mem->mem_type].gpu_offset;
 300                 break;
 301         default:
 302                 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
 303                 return -EINVAL;
 304         }
 305         if (!ring->ready) {
 306                 DRM_ERROR("Trying to move memory with ring turned off.\n");
 307                 return -EINVAL;
 308         }
 309
 310         BUILD_BUG_ON((PAGE_SIZE % AMDGPU_GPU_PAGE_SIZE) != 0);
 311
 312         r = amdgpu_copy_buffer(ring, old_start, new_start,
 313                                new_mem->num_pages * PAGE_SIZE, /* bytes */
 314                                bo->resv, &fence, false);
 315         if (r)
 316                 return r;
 317
 318         r = ttm_bo_pipeline_move(bo, fence, evict, new_mem);
 319         fence_put(fence);
 320         return r;
 321 }
 322
 323 static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo,
 324                                 bool evict, bool interruptible,
 325                                 bool no_wait_gpu,
 326                                 struct ttm_mem_reg *new_mem)
 327 {
 328         struct amdgpu_device *adev;
 329         struct ttm_mem_reg *old_mem = &bo->mem;
 330         struct ttm_mem_reg tmp_mem;
 331         struct ttm_place placements;
 332         struct ttm_placement placement;
 333         int r;
 334
 335         adev = amdgpu_get_adev(bo->bdev);
 336         tmp_mem = *new_mem;
 337         tmp_mem.mm_node = NULL;
 338         placement.num_placement = 1;
 339         placement.placement = &placements;
 340         placement.num_busy_placement = 1;
 341         placement.busy_placement = &placements;
 342         placements.fpfn = 0;
 343         placements.lpfn = adev->mc.gtt_size >> PAGE_SHIFT;
 344         placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
 345         r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
 346                              interruptible, no_wait_gpu);
 347         if (unlikely(r)) {
 348                 return r;
 349         }
 350
 351         r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement);
 352         if (unlikely(r)) {
 353                 goto out_cleanup;
 354         }
 355
 356         r = ttm_tt_bind(bo->ttm, &tmp_mem);
 357         if (unlikely(r)) {
 358                 goto out_cleanup;
 359         }
 360         r = amdgpu_move_blit(bo, true, no_wait_gpu, &tmp_mem, old_mem);
 361         if (unlikely(r)) {
 362                 goto out_cleanup;
 363         }
 364         r = ttm_bo_move_ttm(bo, interruptible, no_wait_gpu, new_mem);
 365 out_cleanup:
 366         ttm_bo_mem_put(bo, &tmp_mem);
 367         return r;
 368 }
 369
 370 static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo,
 371                                 bool evict, bool interruptible,
 372                                 bool no_wait_gpu,
 373                                 struct ttm_mem_reg *new_mem)
 374 {
 375         struct amdgpu_device *adev;
 376         struct ttm_mem_reg *old_mem = &bo->mem;
 377         struct ttm_mem_reg tmp_mem;
 378         struct ttm_placement placement;
 379         struct ttm_place placements;
 380         int r;
 381
 382         adev = amdgpu_get_adev(bo->bdev);
 383         tmp_mem = *new_mem;
 384         tmp_mem.mm_node = NULL;
 385         placement.num_placement = 1;
 386         placement.placement = &placements;
 387         placement.num_busy_placement = 1;
 388         placement.busy_placement = &placements;
 389         placements.fpfn = 0;
 390         placements.lpfn = adev->mc.gtt_size >> PAGE_SHIFT;
 391         placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
 392         r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
 393                              interruptible, no_wait_gpu);
 394         if (unlikely(r)) {
 395                 return r;
 396         }
 397         r = ttm_bo_move_ttm(bo, interruptible, no_wait_gpu, &tmp_mem);
 398         if (unlikely(r)) {
 399                 goto out_cleanup;
 400         }
 401         r = amdgpu_move_blit(bo, true, no_wait_gpu, new_mem, old_mem);
 402         if (unlikely(r)) {
 403                 goto out_cleanup;
 404         }
 405 out_cleanup:
 406         ttm_bo_mem_put(bo, &tmp_mem);
 407         return r;
 408 }
 409
 410 static int amdgpu_bo_move(struct ttm_buffer_object *bo,
 411                         bool evict, bool interruptible,
 412                         bool no_wait_gpu,
 413                         struct ttm_mem_reg *new_mem)
 414 {
 415         struct amdgpu_device *adev;
 416         struct amdgpu_bo *abo;
 417         struct ttm_mem_reg *old_mem = &bo->mem;
 418         int r;
 419
 420         /* Can't move a pinned BO */
 421         abo = container_of(bo, struct amdgpu_bo, tbo);
 422         if (WARN_ON_ONCE(abo->pin_count > 0))
 423                 return -EINVAL;
 424
 425         adev = amdgpu_get_adev(bo->bdev);
 426
 427         /* remember the eviction */
 428         if (evict)
 429                 atomic64_inc(&adev->num_evictions);
 430
 431         if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
 432                 amdgpu_move_null(bo, new_mem);
 433                 return 0;
 434         }
 435         if ((old_mem->mem_type == TTM_PL_TT &&
 436              new_mem->mem_type == TTM_PL_SYSTEM) ||
 437             (old_mem->mem_type == TTM_PL_SYSTEM &&
 438              new_mem->mem_type == TTM_PL_TT)) {
 439                 /* bind is enough */
 440                 amdgpu_move_null(bo, new_mem);
 441                 return 0;
 442         }
 443         if (adev->mman.buffer_funcs == NULL ||
 444             adev->mman.buffer_funcs_ring == NULL ||
 445             !adev->mman.buffer_funcs_ring->ready) {
 446                 /* use memcpy */
 447                 goto memcpy;
 448         }
 449
 450         if (old_mem->mem_type == TTM_PL_VRAM &&
 451             new_mem->mem_type == TTM_PL_SYSTEM) {
 452                 r = amdgpu_move_vram_ram(bo, evict, interruptible,
 453                                         no_wait_gpu, new_mem);
 454         } else if (old_mem->mem_type == TTM_PL_SYSTEM &&
 455                    new_mem->mem_type == TTM_PL_VRAM) {
 456                 r = amdgpu_move_ram_vram(bo, evict, interruptible,
 457                                             no_wait_gpu, new_mem);
 458         } else {
 459                 r = amdgpu_move_blit(bo, evict, no_wait_gpu, new_mem, old_mem);
 460         }
 461
 462         if (r) {
 463 memcpy:
 464                 r = ttm_bo_move_memcpy(bo, interruptible, no_wait_gpu, new_mem);
 465                 if (r) {
 466                         return r;
 467                 }
 468         }
 469
 470         /* update statistics */
 471         atomic64_add((u64)bo->num_pages << PAGE_SHIFT, &adev->num_bytes_moved);
 472         return 0;
 473 }
 474
 475 static int amdgpu_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
 476 {
 477         struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
 478         struct amdgpu_device *adev = amdgpu_get_adev(bdev);
 479
 480         mem->bus.addr = NULL;
 481         mem->bus.offset = 0;
 482         mem->bus.size = mem->num_pages << PAGE_SHIFT;
 483         mem->bus.base = 0;
 484         mem->bus.is_iomem = false;
 485         if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
 486                 return -EINVAL;
 487         switch (mem->mem_type) {
 488         case TTM_PL_SYSTEM:
 489                 /* system memory */
 490                 return 0;
 491         case TTM_PL_TT:
 492                 break;
 493         case TTM_PL_VRAM:
 494                 mem->bus.offset = mem->start << PAGE_SHIFT;
 495                 /* check if it's visible */
 496                 if ((mem->bus.offset + mem->bus.size) > adev->mc.visible_vram_size)
 497                         return -EINVAL;
 498                 mem->bus.base = adev->mc.aper_base;
 499                 mem->bus.is_iomem = true;
 500 #ifdef __alpha__
 501                 /*
 502                  * Alpha: use bus.addr to hold the ioremap() return,
 503                  * so we can modify bus.base below.
 504                  */
 505                 if (mem->placement & TTM_PL_FLAG_WC)
 506                         mem->bus.addr =
 507                                 ioremap_wc(mem->bus.base + mem->bus.offset,
 508                                            mem->bus.size);
 509                 else
 510                         mem->bus.addr =
 511                                 ioremap_nocache(mem->bus.base + mem->bus.offset,
 512                                                 mem->bus.size);
 513
 514                 /*
 515                  * Alpha: Use just the bus offset plus
 516                  * the hose/domain memory base for bus.base.
 517                  * It then can be used to build PTEs for VRAM
 518                  * access, as done in ttm_bo_vm_fault().
 519                  */
 520                 mem->bus.base = (mem->bus.base & 0x0ffffffffUL) +
 521                         adev->ddev->hose->dense_mem_base;
 522 #endif
 523                 break;
 524         default:
 525                 return -EINVAL;
 526         }
 527         return 0;
 528 }
 529
 530 static void amdgpu_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
 531 {
 532 }
 533
 534 /*
 535  * TTM backend functions.
 536  */
 537 struct amdgpu_ttm_gup_task_list {
 538         struct list_head        list;
 539         struct task_struct      *task;
 540 };
 541
 542 struct amdgpu_ttm_tt {
 543         struct ttm_dma_tt       ttm;
 544         struct amdgpu_device    *adev;
 545         u64                     offset;
 546         uint64_t                userptr;
 547         struct mm_struct        *usermm;
 548         uint32_t                userflags;
 549         spinlock_t              guptasklock;
 550         struct list_head        guptasks;
 551         atomic_t                mmu_invalidations;
 552         struct list_head        list;
 553 };
 554
 555 int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages)
 556 {
 557         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 558         unsigned int flags = 0;
 559         unsigned pinned = 0;
 560         int r;
 561
 562         if (!(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY))
 563                 flags |= FOLL_WRITE;
 564
 565         if (gtt->userflags & AMDGPU_GEM_USERPTR_ANONONLY) {
 566                 /* check that we only use anonymous memory
 567                    to prevent problems with writeback */
 568                 unsigned long end = gtt->userptr + ttm->num_pages * PAGE_SIZE;
 569                 struct vm_area_struct *vma;
 570
 571                 vma = find_vma(gtt->usermm, gtt->userptr);
 572                 if (!vma || vma->vm_file || vma->vm_end < end)
 573                         return -EPERM;
 574         }
 575
 576         do {
 577                 unsigned num_pages = ttm->num_pages - pinned;
 578                 uint64_t userptr = gtt->userptr + pinned * PAGE_SIZE;
 579                 struct page **p = pages + pinned;
 580                 struct amdgpu_ttm_gup_task_list guptask;
 581
 582                 guptask.task = current;
 583                 spin_lock(&gtt->guptasklock);
 584                 list_add(&guptask.list, &gtt->guptasks);
 585                 spin_unlock(&gtt->guptasklock);
 586
 587                 r = get_user_pages(userptr, num_pages, flags, p, NULL);
 588
 589                 spin_lock(&gtt->guptasklock);
 590                 list_del(&guptask.list);
 591                 spin_unlock(&gtt->guptasklock);
 592
 593                 if (r < 0)
 594                         goto release_pages;
 595
 596                 pinned += r;
 597
 598         } while (pinned < ttm->num_pages);
 599
 600         return 0;
 601
 602 release_pages:
 603         release_pages(pages, pinned, 0);
 604         return r;
 605 }
 606
 607 /* prepare the sg table with the user pages */
 608 static int amdgpu_ttm_tt_pin_userptr(struct ttm_tt *ttm)
 609 {
 610         struct amdgpu_device *adev = amdgpu_get_adev(ttm->bdev);
 611         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 612         unsigned nents;
 613         int r;
 614
 615         int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY);
 616         enum dma_data_direction direction = write ?
 617                 DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
 618
 619         r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0,
 620                                       ttm->num_pages << PAGE_SHIFT,
 621                                       GFP_KERNEL);
 622         if (r)
 623                 goto release_sg;
 624
 625         r = -ENOMEM;
 626         nents = dma_map_sg(adev->dev, ttm->sg->sgl, ttm->sg->nents, direction);
 627         if (nents != ttm->sg->nents)
 628                 goto release_sg;
 629
 630         drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
 631                                          gtt->ttm.dma_address, ttm->num_pages);
 632
 633         return 0;
 634
 635 release_sg:
 636         kfree(ttm->sg);
 637         return r;
 638 }
 639
 640 static void amdgpu_ttm_tt_unpin_userptr(struct ttm_tt *ttm)
 641 {
 642         struct amdgpu_device *adev = amdgpu_get_adev(ttm->bdev);
 643         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 644         struct sg_page_iter sg_iter;
 645
 646         int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY);
 647         enum dma_data_direction direction = write ?
 648                 DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
 649
 650         /* double check that we don't free the table twice */
 651         if (!ttm->sg->sgl)
 652                 return;
 653
 654         /* free the sg table and pages again */
 655         dma_unmap_sg(adev->dev, ttm->sg->sgl, ttm->sg->nents, direction);
 656
 657         for_each_sg_page(ttm->sg->sgl, &sg_iter, ttm->sg->nents, 0) {
 658                 struct page *page = sg_page_iter_page(&sg_iter);
 659                 if (!(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY))
 660                         set_page_dirty(page);
 661
 662                 mark_page_accessed(page);
 663                 put_page(page);
 664         }
 665
 666         sg_free_table(ttm->sg);
 667 }
 668
 669 static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm,
 670                                    struct ttm_mem_reg *bo_mem)
 671 {
 672         struct amdgpu_ttm_tt *gtt = (void*)ttm;
 673         int r;
 674
 675         if (gtt->userptr) {
 676                 r = amdgpu_ttm_tt_pin_userptr(ttm);
 677                 if (r) {
 678                         DRM_ERROR("failed to pin userptr\n");
 679                         return r;
 680                 }
 681         }
 682         if (!ttm->num_pages) {
 683                 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
 684                      ttm->num_pages, bo_mem, ttm);
 685         }
 686
 687         if (bo_mem->mem_type == AMDGPU_PL_GDS ||
 688             bo_mem->mem_type == AMDGPU_PL_GWS ||
 689             bo_mem->mem_type == AMDGPU_PL_OA)
 690                 return -EINVAL;
 691
 692         return 0;
 693 }
 694
 695 bool amdgpu_ttm_is_bound(struct ttm_tt *ttm)
 696 {
 697         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 698
 699         return gtt && !list_empty(&gtt->list);
 700 }
 701
 702 int amdgpu_ttm_bind(struct ttm_buffer_object *bo, struct ttm_mem_reg *bo_mem)
 703 {
 704         struct ttm_tt *ttm = bo->ttm;
 705         struct amdgpu_ttm_tt *gtt = (void *)bo->ttm;
 706         uint32_t flags;
 707         int r;
 708
 709         if (!ttm || amdgpu_ttm_is_bound(ttm))
 710                 return 0;
 711
 712         r = amdgpu_gtt_mgr_alloc(&bo->bdev->man[TTM_PL_TT], bo,
 713                                  NULL, bo_mem);
 714         if (r) {
 715                 DRM_ERROR("Failed to allocate GTT address space (%d)\n", r);
 716                 return r;
 717         }
 718
 719         flags = amdgpu_ttm_tt_pte_flags(gtt->adev, ttm, bo_mem);
 720         gtt->offset = (u64)bo_mem->start << PAGE_SHIFT;
 721         r = amdgpu_gart_bind(gtt->adev, gtt->offset, ttm->num_pages,
 722                 ttm->pages, gtt->ttm.dma_address, flags);
 723
 724         if (r) {
 725                 DRM_ERROR("failed to bind %lu pages at 0x%08llX\n",
 726                           ttm->num_pages, gtt->offset);
 727                 return r;
 728         }
 729         spin_lock(&gtt->adev->gtt_list_lock);
 730         list_add_tail(&gtt->list, &gtt->adev->gtt_list);
 731         spin_unlock(&gtt->adev->gtt_list_lock);
 732         return 0;
 733 }
 734
 735 int amdgpu_ttm_recover_gart(struct amdgpu_device *adev)
 736 {
 737         struct amdgpu_ttm_tt *gtt, *tmp;
 738         struct ttm_mem_reg bo_mem;
 739         uint32_t flags;
 740         int r;
 741
 742         bo_mem.mem_type = TTM_PL_TT;
 743         spin_lock(&adev->gtt_list_lock);
 744         list_for_each_entry_safe(gtt, tmp, &adev->gtt_list, list) {
 745                 flags = amdgpu_ttm_tt_pte_flags(gtt->adev, &gtt->ttm.ttm, &bo_mem);
 746                 r = amdgpu_gart_bind(adev, gtt->offset, gtt->ttm.ttm.num_pages,
 747                                      gtt->ttm.ttm.pages, gtt->ttm.dma_address,
 748                                      flags);
 749                 if (r) {
 750                         spin_unlock(&adev->gtt_list_lock);
 751                         DRM_ERROR("failed to bind %lu pages at 0x%08llX\n",
 752                                   gtt->ttm.ttm.num_pages, gtt->offset);
 753                         return r;
 754                 }
 755         }
 756         spin_unlock(&adev->gtt_list_lock);
 757         return 0;
 758 }
 759
 760 static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm)
 761 {
 762         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 763
 764         if (gtt->userptr)
 765                 amdgpu_ttm_tt_unpin_userptr(ttm);
 766
 767         if (!amdgpu_ttm_is_bound(ttm))
 768                 return 0;
 769
 770         /* unbind shouldn't be done for GDS/GWS/OA in ttm_bo_clean_mm */
 771         if (gtt->adev->gart.ready)
 772                 amdgpu_gart_unbind(gtt->adev, gtt->offset, ttm->num_pages);
 773
 774         spin_lock(&gtt->adev->gtt_list_lock);
 775         list_del_init(&gtt->list);
 776         spin_unlock(&gtt->adev->gtt_list_lock);
 777
 778         return 0;
 779 }
 780
 781 static void amdgpu_ttm_backend_destroy(struct ttm_tt *ttm)
 782 {
 783         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 784
 785         ttm_dma_tt_fini(&gtt->ttm);
 786         kfree(gtt);
 787 }
 788
 789 static struct ttm_backend_func amdgpu_backend_func = {
 790         .bind = &amdgpu_ttm_backend_bind,
 791         .unbind = &amdgpu_ttm_backend_unbind,
 792         .destroy = &amdgpu_ttm_backend_destroy,
 793 };
 794
 795 static struct ttm_tt *amdgpu_ttm_tt_create(struct ttm_bo_device *bdev,
 796                                     unsigned long size, uint32_t page_flags,
 797                                     struct page *dummy_read_page)
 798 {
 799         struct amdgpu_device *adev;
 800         struct amdgpu_ttm_tt *gtt;
 801
 802         adev = amdgpu_get_adev(bdev);
 803
 804         gtt = kzalloc(sizeof(struct amdgpu_ttm_tt), GFP_KERNEL);
 805         if (gtt == NULL) {
 806                 return NULL;
 807         }
 808         gtt->ttm.ttm.func = &amdgpu_backend_func;
 809         gtt->adev = adev;
 810         if (ttm_dma_tt_init(&gtt->ttm, bdev, size, page_flags, dummy_read_page)) {
 811                 kfree(gtt);
 812                 return NULL;
 813         }
 814         INIT_LIST_HEAD(&gtt->list);
 815         return &gtt->ttm.ttm;
 816 }
 817
 818 static int amdgpu_ttm_tt_populate(struct ttm_tt *ttm)
 819 {
 820         struct amdgpu_device *adev;
 821         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 822         unsigned i;
 823         int r;
 824         bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
 825
 826         if (ttm->state != tt_unpopulated)
 827                 return 0;
 828
 829         if (gtt && gtt->userptr) {
 830                 ttm->sg = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
 831                 if (!ttm->sg)
 832                         return -ENOMEM;
 833
 834                 ttm->page_flags |= TTM_PAGE_FLAG_SG;
 835                 ttm->state = tt_unbound;
 836                 return 0;
 837         }
 838
 839         if (slave && ttm->sg) {
 840                 drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
 841                                                  gtt->ttm.dma_address, ttm->num_pages);
 842                 ttm->state = tt_unbound;
 843                 return 0;
 844         }
 845
 846         adev = amdgpu_get_adev(ttm->bdev);
 847
 848 #ifdef CONFIG_SWIOTLB
 849         if (swiotlb_nr_tbl()) {
 850                 return ttm_dma_populate(&gtt->ttm, adev->dev);
 851         }
 852 #endif
 853
 854         r = ttm_pool_populate(ttm);
 855         if (r) {
 856                 return r;
 857         }
 858
 859         for (i = 0; i < ttm->num_pages; i++) {
 860                 gtt->ttm.dma_address[i] = pci_map_page(adev->pdev, ttm->pages[i],
 861                                                        0, PAGE_SIZE,
 862                                                        PCI_DMA_BIDIRECTIONAL);
 863                 if (pci_dma_mapping_error(adev->pdev, gtt->ttm.dma_address[i])) {
 864                         while (i--) {
 865                                 pci_unmap_page(adev->pdev, gtt->ttm.dma_address[i],
 866                                                PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 867                                 gtt->ttm.dma_address[i] = 0;
 868                         }
 869                         ttm_pool_unpopulate(ttm);
 870                         return -EFAULT;
 871                 }
 872         }
 873         return 0;
 874 }
 875
 876 static void amdgpu_ttm_tt_unpopulate(struct ttm_tt *ttm)
 877 {
 878         struct amdgpu_device *adev;
 879         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 880         unsigned i;
 881         bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
 882
 883         if (gtt && gtt->userptr) {
 884                 kfree(ttm->sg);
 885                 ttm->page_flags &= ~TTM_PAGE_FLAG_SG;
 886                 return;
 887         }
 888
 889         if (slave)
 890                 return;
 891
 892         adev = amdgpu_get_adev(ttm->bdev);
 893
 894 #ifdef CONFIG_SWIOTLB
 895         if (swiotlb_nr_tbl()) {
 896                 ttm_dma_unpopulate(&gtt->ttm, adev->dev);
 897                 return;
 898         }
 899 #endif
 900
 901         for (i = 0; i < ttm->num_pages; i++) {
 902                 if (gtt->ttm.dma_address[i]) {
 903                         pci_unmap_page(adev->pdev, gtt->ttm.dma_address[i],
 904                                        PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 905                 }
 906         }
 907
 908         ttm_pool_unpopulate(ttm);
 909 }
 910
 911 int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr,
 912                               uint32_t flags)
 913 {
 914         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 915
 916         if (gtt == NULL)
 917                 return -EINVAL;
 918
 919         gtt->userptr = addr;
 920         gtt->usermm = current->mm;
 921         gtt->userflags = flags;
 922         spin_lock_init(&gtt->guptasklock);
 923         INIT_LIST_HEAD(&gtt->guptasks);
 924         atomic_set(&gtt->mmu_invalidations, 0);
 925
 926         return 0;
 927 }
 928
 929 struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm)
 930 {
 931         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 932
 933         if (gtt == NULL)
 934                 return NULL;
 935
 936         return gtt->usermm;
 937 }
 938
 939 bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
 940                                   unsigned long end)
 941 {
 942         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 943         struct amdgpu_ttm_gup_task_list *entry;
 944         unsigned long size;
 945
 946         if (gtt == NULL || !gtt->userptr)
 947                 return false;
 948
 949         size = (unsigned long)gtt->ttm.ttm.num_pages * PAGE_SIZE;
 950         if (gtt->userptr > end || gtt->userptr + size <= start)
 951                 return false;
 952
 953         spin_lock(&gtt->guptasklock);
 954         list_for_each_entry(entry, &gtt->guptasks, list) {
 955                 if (entry->task == current) {
 956                         spin_unlock(&gtt->guptasklock);
 957                         return false;
 958                 }
 959         }
 960         spin_unlock(&gtt->guptasklock);
 961
 962         atomic_inc(&gtt->mmu_invalidations);
 963
 964         return true;
 965 }
 966
 967 bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
 968                                        int *last_invalidated)
 969 {
 970         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 971         int prev_invalidated = *last_invalidated;
 972
 973         *last_invalidated = atomic_read(&gtt->mmu_invalidations);
 974         return prev_invalidated != *last_invalidated;
 975 }
 976
 977 bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm)
 978 {
 979         struct amdgpu_ttm_tt *gtt = (void *)ttm;
 980
 981         if (gtt == NULL)
 982                 return false;
 983
 984         return !!(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY);
 985 }
 986
 987 uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
 988                                  struct ttm_mem_reg *mem)
 989 {
 990         uint32_t flags = 0;
 991
 992         if (mem && mem->mem_type != TTM_PL_SYSTEM)
 993                 flags |= AMDGPU_PTE_VALID;
 994
 995         if (mem && mem->mem_type == TTM_PL_TT) {
 996                 flags |= AMDGPU_PTE_SYSTEM;
 997
 998                 if (ttm->caching_state == tt_cached)
 999                         flags |= AMDGPU_PTE_SNOOPED;
1000         }
1001
1002         if (adev->asic_type >= CHIP_TONGA)
1003                 flags |= AMDGPU_PTE_EXECUTABLE;
1004
1005         flags |= AMDGPU_PTE_READABLE;
1006
1007         if (!amdgpu_ttm_tt_is_readonly(ttm))
1008                 flags |= AMDGPU_PTE_WRITEABLE;
1009
1010         return flags;
1011 }
1012
1013 static void amdgpu_ttm_lru_removal(struct ttm_buffer_object *tbo)
1014 {
1015         struct amdgpu_device *adev = amdgpu_get_adev(tbo->bdev);
1016         unsigned i, j;
1017
1018         for (i = 0; i < AMDGPU_TTM_LRU_SIZE; ++i) {
1019                 struct amdgpu_mman_lru *lru = &adev->mman.log2_size[i];
1020
1021                 for (j = 0; j < TTM_NUM_MEM_TYPES; ++j)
1022                         if (&tbo->lru == lru->lru[j])
1023                                 lru->lru[j] = tbo->lru.prev;
1024
1025                 if (&tbo->swap == lru->swap_lru)
1026                         lru->swap_lru = tbo->swap.prev;
1027         }
1028 }
1029
1030 static struct amdgpu_mman_lru *amdgpu_ttm_lru(struct ttm_buffer_object *tbo)
1031 {
1032         struct amdgpu_device *adev = amdgpu_get_adev(tbo->bdev);
1033         unsigned log2_size = min(ilog2(tbo->num_pages),
1034                                  AMDGPU_TTM_LRU_SIZE - 1);
1035
1036         return &adev->mman.log2_size[log2_size];
1037 }
1038
1039 static struct list_head *amdgpu_ttm_lru_tail(struct ttm_buffer_object *tbo)
1040 {
1041         struct amdgpu_mman_lru *lru = amdgpu_ttm_lru(tbo);
1042         struct list_head *res = lru->lru[tbo->mem.mem_type];
1043
1044         lru->lru[tbo->mem.mem_type] = &tbo->lru;
1045         while ((++lru)->lru[tbo->mem.mem_type] == res)
1046                 lru->lru[tbo->mem.mem_type] = &tbo->lru;
1047
1048         return res;
1049 }
1050
1051 static struct list_head *amdgpu_ttm_swap_lru_tail(struct ttm_buffer_object *tbo)
1052 {
1053         struct amdgpu_mman_lru *lru = amdgpu_ttm_lru(tbo);
1054         struct list_head *res = lru->swap_lru;
1055
1056         lru->swap_lru = &tbo->swap;
1057         while ((++lru)->swap_lru == res)
1058                 lru->swap_lru = &tbo->swap;
1059
1060         return res;
1061 }
1062
1063 static struct ttm_bo_driver amdgpu_bo_driver = {
1064         .ttm_tt_create = &amdgpu_ttm_tt_create,
1065         .ttm_tt_populate = &amdgpu_ttm_tt_populate,
1066         .ttm_tt_unpopulate = &amdgpu_ttm_tt_unpopulate,
1067         .invalidate_caches = &amdgpu_invalidate_caches,
1068         .init_mem_type = &amdgpu_init_mem_type,
1069         .evict_flags = &amdgpu_evict_flags,
1070         .move = &amdgpu_bo_move,
1071         .verify_access = &amdgpu_verify_access,
1072         .move_notify = &amdgpu_bo_move_notify,
1073         .fault_reserve_notify = &amdgpu_bo_fault_reserve_notify,
1074         .io_mem_reserve = &amdgpu_ttm_io_mem_reserve,
1075         .io_mem_free = &amdgpu_ttm_io_mem_free,
1076         .lru_removal = &amdgpu_ttm_lru_removal,
1077         .lru_tail = &amdgpu_ttm_lru_tail,
1078         .swap_lru_tail = &amdgpu_ttm_swap_lru_tail,
1079 };
1080
1081 int amdgpu_ttm_init(struct amdgpu_device *adev)
1082 {
1083         unsigned i, j;
1084         int r;
1085
1086         /* No others user of address space so set it to 0 */
1087         r = ttm_bo_device_init(&adev->mman.bdev,
1088                                adev->mman.bo_global_ref.ref.object,
1089                                &amdgpu_bo_driver,
1090                                adev->ddev->anon_inode->i_mapping,
1091                                DRM_FILE_PAGE_OFFSET,
1092                                adev->need_dma32);
1093         if (r) {
1094                 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
1095                 return r;
1096         }
1097
1098         for (i = 0; i < AMDGPU_TTM_LRU_SIZE; ++i) {
1099                 struct amdgpu_mman_lru *lru = &adev->mman.log2_size[i];
1100
1101                 for (j = 0; j < TTM_NUM_MEM_TYPES; ++j)
1102                         lru->lru[j] = &adev->mman.bdev.man[j].lru;
1103                 lru->swap_lru = &adev->mman.bdev.glob->swap_lru;
1104         }
1105
1106         for (j = 0; j < TTM_NUM_MEM_TYPES; ++j)
1107                 adev->mman.guard.lru[j] = NULL;
1108         adev->mman.guard.swap_lru = NULL;
1109
1110         adev->mman.initialized = true;
1111         r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_VRAM,
1112                                 adev->mc.real_vram_size >> PAGE_SHIFT);
1113         if (r) {
1114                 DRM_ERROR("Failed initializing VRAM heap.\n");
1115                 return r;
1116         }
1117         /* Change the size here instead of the init above so only lpfn is affected */
1118         amdgpu_ttm_set_active_vram_size(adev, adev->mc.visible_vram_size);
1119
1120         r = amdgpu_bo_create(adev, 256 * 1024, PAGE_SIZE, true,
1121                              AMDGPU_GEM_DOMAIN_VRAM,
1122                              AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
1123                              NULL, NULL, &adev->stollen_vga_memory);
1124         if (r) {
1125                 return r;
1126         }
1127         r = amdgpu_bo_reserve(adev->stollen_vga_memory, false);
1128         if (r)
1129                 return r;
1130         r = amdgpu_bo_pin(adev->stollen_vga_memory, AMDGPU_GEM_DOMAIN_VRAM, NULL);
1131         amdgpu_bo_unreserve(adev->stollen_vga_memory);
1132         if (r) {
1133                 amdgpu_bo_unref(&adev->stollen_vga_memory);
1134                 return r;
1135         }
1136         DRM_INFO("amdgpu: %uM of VRAM memory ready\n",
1137                  (unsigned) (adev->mc.real_vram_size / (1024 * 1024)));
1138         r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_TT,
1139                                 adev->mc.gtt_size >> PAGE_SHIFT);
1140         if (r) {
1141                 DRM_ERROR("Failed initializing GTT heap.\n");
1142                 return r;
1143         }
1144         DRM_INFO("amdgpu: %uM of GTT memory ready.\n",
1145                  (unsigned)(adev->mc.gtt_size / (1024 * 1024)));
1146
1147         adev->gds.mem.total_size = adev->gds.mem.total_size << AMDGPU_GDS_SHIFT;
1148         adev->gds.mem.gfx_partition_size = adev->gds.mem.gfx_partition_size << AMDGPU_GDS_SHIFT;
1149         adev->gds.mem.cs_partition_size = adev->gds.mem.cs_partition_size << AMDGPU_GDS_SHIFT;
1150         adev->gds.gws.total_size = adev->gds.gws.total_size << AMDGPU_GWS_SHIFT;
1151         adev->gds.gws.gfx_partition_size = adev->gds.gws.gfx_partition_size << AMDGPU_GWS_SHIFT;
1152         adev->gds.gws.cs_partition_size = adev->gds.gws.cs_partition_size << AMDGPU_GWS_SHIFT;
1153         adev->gds.oa.total_size = adev->gds.oa.total_size << AMDGPU_OA_SHIFT;
1154         adev->gds.oa.gfx_partition_size = adev->gds.oa.gfx_partition_size << AMDGPU_OA_SHIFT;
1155         adev->gds.oa.cs_partition_size = adev->gds.oa.cs_partition_size << AMDGPU_OA_SHIFT;
1156         /* GDS Memory */
1157         r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GDS,
1158                                 adev->gds.mem.total_size >> PAGE_SHIFT);
1159         if (r) {
1160                 DRM_ERROR("Failed initializing GDS heap.\n");
1161                 return r;
1162         }
1163
1164         /* GWS */
1165         r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GWS,
1166                                 adev->gds.gws.total_size >> PAGE_SHIFT);
1167         if (r) {
1168                 DRM_ERROR("Failed initializing gws heap.\n");
1169                 return r;
1170         }
1171
1172         /* OA */
1173         r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_OA,
1174                                 adev->gds.oa.total_size >> PAGE_SHIFT);
1175         if (r) {
1176                 DRM_ERROR("Failed initializing oa heap.\n");
1177                 return r;
1178         }
1179
1180         r = amdgpu_ttm_debugfs_init(adev);
1181         if (r) {
1182                 DRM_ERROR("Failed to init debugfs\n");
1183                 return r;
1184         }
1185         return 0;
1186 }
1187
1188 void amdgpu_ttm_fini(struct amdgpu_device *adev)
1189 {
1190         int r;
1191
1192         if (!adev->mman.initialized)
1193                 return;
1194         amdgpu_ttm_debugfs_fini(adev);
1195         if (adev->stollen_vga_memory) {
1196                 r = amdgpu_bo_reserve(adev->stollen_vga_memory, false);
1197                 if (r == 0) {
1198                         amdgpu_bo_unpin(adev->stollen_vga_memory);
1199                         amdgpu_bo_unreserve(adev->stollen_vga_memory);
1200                 }
1201                 amdgpu_bo_unref(&adev->stollen_vga_memory);
1202         }
1203         ttm_bo_clean_mm(&adev->mman.bdev, TTM_PL_VRAM);
1204         ttm_bo_clean_mm(&adev->mman.bdev, TTM_PL_TT);
1205         ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GDS);
1206         ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GWS);
1207         ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_OA);
1208         ttm_bo_device_release(&adev->mman.bdev);
1209         amdgpu_gart_fini(adev);
1210         amdgpu_ttm_global_fini(adev);
1211         adev->mman.initialized = false;
1212         DRM_INFO("amdgpu: ttm finalized\n");
1213 }
1214
1215 /* this should only be called at bootup or when userspace
1216  * isn't running */
1217 void amdgpu_ttm_set_active_vram_size(struct amdgpu_device *adev, u64 size)
1218 {
1219         struct ttm_mem_type_manager *man;
1220
1221         if (!adev->mman.initialized)
1222                 return;
1223
1224         man = &adev->mman.bdev.man[TTM_PL_VRAM];
1225         /* this just adjusts TTM size idea, which sets lpfn to the correct value */
1226         man->size = size >> PAGE_SHIFT;
1227 }
1228
1229 int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma)
1230 {
1231         struct drm_file *file_priv;
1232         struct amdgpu_device *adev;
1233
1234         if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
1235                 return -EINVAL;
1236
1237         file_priv = filp->private_data;
1238         adev = file_priv->minor->dev->dev_private;
1239         if (adev == NULL)
1240                 return -EINVAL;
1241
1242         return ttm_bo_mmap(filp, vma, &adev->mman.bdev);
1243 }
1244
1245 int amdgpu_copy_buffer(struct amdgpu_ring *ring,
1246                        uint64_t src_offset,
1247                        uint64_t dst_offset,
1248                        uint32_t byte_count,
1249                        struct reservation_object *resv,
1250                        struct fence **fence, bool direct_submit)
1251 {
1252         struct amdgpu_device *adev = ring->adev;
1253         struct amdgpu_job *job;
1254
1255         uint32_t max_bytes;
1256         unsigned num_loops, num_dw;
1257         unsigned i;
1258         int r;
1259
1260         max_bytes = adev->mman.buffer_funcs->copy_max_bytes;
1261         num_loops = DIV_ROUND_UP(byte_count, max_bytes);
1262         num_dw = num_loops * adev->mman.buffer_funcs->copy_num_dw;
1263
1264         /* for IB padding */
1265         while (num_dw & 0x7)
1266                 num_dw++;
1267
1268         r = amdgpu_job_alloc_with_ib(adev, num_dw * 4, &job);
1269         if (r)
1270                 return r;
1271
1272         if (resv) {
1273                 r = amdgpu_sync_resv(adev, &job->sync, resv,
1274                                      AMDGPU_FENCE_OWNER_UNDEFINED);
1275                 if (r) {
1276                         DRM_ERROR("sync failed (%d).\n", r);
1277                         goto error_free;
1278                 }
1279         }
1280
1281         for (i = 0; i < num_loops; i++) {
1282                 uint32_t cur_size_in_bytes = min(byte_count, max_bytes);
1283
1284                 amdgpu_emit_copy_buffer(adev, &job->ibs[0], src_offset,
1285                                         dst_offset, cur_size_in_bytes);
1286
1287                 src_offset += cur_size_in_bytes;
1288                 dst_offset += cur_size_in_bytes;
1289                 byte_count -= cur_size_in_bytes;
1290         }
1291
1292         amdgpu_ring_pad_ib(ring, &job->ibs[0]);
1293         WARN_ON(job->ibs[0].length_dw > num_dw);
1294         if (direct_submit) {
1295                 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs,
1296                                        NULL, NULL, fence);
1297                 job->fence = fence_get(*fence);
1298                 if (r)
1299                         DRM_ERROR("Error scheduling IBs (%d)\n", r);
1300                 amdgpu_job_free(job);
1301         } else {
1302                 r = amdgpu_job_submit(job, ring, &adev->mman.entity,
1303                                       AMDGPU_FENCE_OWNER_UNDEFINED, fence);
1304                 if (r)
1305                         goto error_free;
1306         }
1307
1308         return r;
1309
1310 error_free:
1311         amdgpu_job_free(job);
1312         return r;
1313 }
1314
1315 int amdgpu_fill_buffer(struct amdgpu_bo *bo,
1316                 uint32_t src_data,
1317                 struct reservation_object *resv,
1318                 struct fence **fence)
1319 {
1320         struct amdgpu_device *adev = bo->adev;
1321         struct amdgpu_job *job;
1322         struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
1323
1324         uint32_t max_bytes, byte_count;
1325         uint64_t dst_offset;
1326         unsigned int num_loops, num_dw;
1327         unsigned int i;
1328         int r;
1329
1330         byte_count = bo->tbo.num_pages << PAGE_SHIFT;
1331         max_bytes = adev->mman.buffer_funcs->fill_max_bytes;
1332         num_loops = DIV_ROUND_UP(byte_count, max_bytes);
1333         num_dw = num_loops * adev->mman.buffer_funcs->fill_num_dw;
1334
1335         /* for IB padding */
1336         while (num_dw & 0x7)
1337                 num_dw++;
1338
1339         r = amdgpu_job_alloc_with_ib(adev, num_dw * 4, &job);
1340         if (r)
1341                 return r;
1342
1343         if (resv) {
1344                 r = amdgpu_sync_resv(adev, &job->sync, resv,
1345                                 AMDGPU_FENCE_OWNER_UNDEFINED);
1346                 if (r) {
1347                         DRM_ERROR("sync failed (%d).\n", r);
1348                         goto error_free;
1349                 }
1350         }
1351
1352         dst_offset = bo->tbo.mem.start << PAGE_SHIFT;
1353         for (i = 0; i < num_loops; i++) {
1354                 uint32_t cur_size_in_bytes = min(byte_count, max_bytes);
1355
1356                 amdgpu_emit_fill_buffer(adev, &job->ibs[0], src_data,
1357                                 dst_offset, cur_size_in_bytes);
1358
1359                 dst_offset += cur_size_in_bytes;
1360                 byte_count -= cur_size_in_bytes;
1361         }
1362
1363         amdgpu_ring_pad_ib(ring, &job->ibs[0]);
1364         WARN_ON(job->ibs[0].length_dw > num_dw);
1365         r = amdgpu_job_submit(job, ring, &adev->mman.entity,
1366                         AMDGPU_FENCE_OWNER_UNDEFINED, fence);
1367         if (r)
1368                 goto error_free;
1369
1370         return 0;
1371
1372 error_free:
1373         amdgpu_job_free(job);
1374         return r;
1375 }
1376
1377 #if defined(CONFIG_DEBUG_FS)
1378
1379 static int amdgpu_mm_dump_table(struct seq_file *m, void *data)
1380 {
1381         struct drm_info_node *node = (struct drm_info_node *)m->private;
1382         unsigned ttm_pl = *(int *)node->info_ent->data;
1383         struct drm_device *dev = node->minor->dev;
1384         struct amdgpu_device *adev = dev->dev_private;
1385         struct drm_mm *mm = (struct drm_mm *)adev->mman.bdev.man[ttm_pl].priv;
1386         int ret;
1387         struct ttm_bo_global *glob = adev->mman.bdev.glob;
1388
1389         spin_lock(&glob->lru_lock);
1390         ret = drm_mm_dump_table(m, mm);
1391         spin_unlock(&glob->lru_lock);
1392         if (ttm_pl == TTM_PL_VRAM)
1393                 seq_printf(m, "man size:%llu pages, ram usage:%lluMB, vis usage:%lluMB\n",
1394                            adev->mman.bdev.man[ttm_pl].size,
1395                            (u64)atomic64_read(&adev->vram_usage) >> 20,
1396                            (u64)atomic64_read(&adev->vram_vis_usage) >> 20);
1397         return ret;
1398 }
1399
1400 static int ttm_pl_vram = TTM_PL_VRAM;
1401 static int ttm_pl_tt = TTM_PL_TT;
1402
1403 static const struct drm_info_list amdgpu_ttm_debugfs_list[] = {
1404         {"amdgpu_vram_mm", amdgpu_mm_dump_table, 0, &ttm_pl_vram},
1405         {"amdgpu_gtt_mm", amdgpu_mm_dump_table, 0, &ttm_pl_tt},
1406         {"ttm_page_pool", ttm_page_alloc_debugfs, 0, NULL},
1407 #ifdef CONFIG_SWIOTLB
1408         {"ttm_dma_page_pool", ttm_dma_page_alloc_debugfs, 0, NULL}
1409 #endif
1410 };
1411
1412 static ssize_t amdgpu_ttm_vram_read(struct file *f, char __user *buf,
1413                                     size_t size, loff_t *pos)
1414 {
1415         struct amdgpu_device *adev = f->f_inode->i_private;
1416         ssize_t result = 0;
1417         int r;
1418
1419         if (size & 0x3 || *pos & 0x3)
1420                 return -EINVAL;
1421
1422         while (size) {
1423                 unsigned long flags;
1424                 uint32_t value;
1425
1426                 if (*pos >= adev->mc.mc_vram_size)
1427                         return result;
1428
1429                 spin_lock_irqsave(&adev->mmio_idx_lock, flags);
1430                 WREG32(mmMM_INDEX, ((uint32_t)*pos) | 0x80000000);
1431                 WREG32(mmMM_INDEX_HI, *pos >> 31);
1432                 value = RREG32(mmMM_DATA);
1433                 spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
1434
1435                 r = put_user(value, (uint32_t *)buf);
1436                 if (r)
1437                         return r;
1438
1439                 result += 4;
1440                 buf += 4;
1441                 *pos += 4;
1442                 size -= 4;
1443         }
1444
1445         return result;
1446 }
1447
1448 static const struct file_operations amdgpu_ttm_vram_fops = {
1449         .owner = THIS_MODULE,
1450         .read = amdgpu_ttm_vram_read,
1451         .llseek = default_llseek
1452 };
1453
1454 #ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
1455
1456 static ssize_t amdgpu_ttm_gtt_read(struct file *f, char __user *buf,
1457                                    size_t size, loff_t *pos)
1458 {
1459         struct amdgpu_device *adev = f->f_inode->i_private;
1460         ssize_t result = 0;
1461         int r;
1462
1463         while (size) {
1464                 loff_t p = *pos / PAGE_SIZE;
1465                 unsigned off = *pos & ~PAGE_MASK;
1466                 size_t cur_size = min_t(size_t, size, PAGE_SIZE - off);
1467                 struct page *page;
1468                 void *ptr;
1469
1470                 if (p >= adev->gart.num_cpu_pages)
1471                         return result;
1472
1473                 page = adev->gart.pages[p];
1474                 if (page) {
1475                         ptr = kmap(page);
1476                         ptr += off;
1477
1478                         r = copy_to_user(buf, ptr, cur_size);
1479                         kunmap(adev->gart.pages[p]);
1480                 } else
1481                         r = clear_user(buf, cur_size);
1482
1483                 if (r)
1484                         return -EFAULT;
1485
1486                 result += cur_size;
1487                 buf += cur_size;
1488                 *pos += cur_size;
1489                 size -= cur_size;
1490         }
1491
1492         return result;
1493 }
1494
1495 static const struct file_operations amdgpu_ttm_gtt_fops = {
1496         .owner = THIS_MODULE,
1497         .read = amdgpu_ttm_gtt_read,
1498         .llseek = default_llseek
1499 };
1500
1501 #endif
1502
1503 #endif
1504
1505 static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
1506 {
1507 #if defined(CONFIG_DEBUG_FS)
1508         unsigned count;
1509
1510         struct drm_minor *minor = adev->ddev->primary;
1511         struct dentry *ent, *root = minor->debugfs_root;
1512
1513         ent = debugfs_create_file("amdgpu_vram", S_IFREG | S_IRUGO, root,
1514                                   adev, &amdgpu_ttm_vram_fops);
1515         if (IS_ERR(ent))
1516                 return PTR_ERR(ent);
1517         i_size_write(ent->d_inode, adev->mc.mc_vram_size);
1518         adev->mman.vram = ent;
1519
1520 #ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
1521         ent = debugfs_create_file("amdgpu_gtt", S_IFREG | S_IRUGO, root,
1522                                   adev, &amdgpu_ttm_gtt_fops);
1523         if (IS_ERR(ent))
1524                 return PTR_ERR(ent);
1525         i_size_write(ent->d_inode, adev->mc.gtt_size);
1526         adev->mman.gtt = ent;
1527
1528 #endif
1529         count = ARRAY_SIZE(amdgpu_ttm_debugfs_list);
1530
1531 #ifdef CONFIG_SWIOTLB
1532         if (!swiotlb_nr_tbl())
1533                 --count;
1534 #endif
1535
1536         return amdgpu_debugfs_add_files(adev, amdgpu_ttm_debugfs_list, count);
1537 #else
1538
1539         return 0;
1540 #endif
1541 }
1542
1543 static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev)
1544 {
1545 #if defined(CONFIG_DEBUG_FS)
1546
1547         debugfs_remove(adev->mman.vram);
1548         adev->mman.vram = NULL;
1549
1550 #ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
1551         debugfs_remove(adev->mman.gtt);
1552         adev->mman.gtt = NULL;
1553 #endif
1554
1555 #endif
1556 }
1557
1558 u64 amdgpu_ttm_get_gtt_mem_size(struct amdgpu_device *adev)
1559 {
1560         return ttm_get_kernel_zone_memory_size(adev->mman.mem_global_ref.object);
1561 }