drivers/gpu/drm/radeon/radeon_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 <drm/drmP.h>
  38 #include <drm/radeon_drm.h>
  39 #include <linux/seq_file.h>
  40 #include <linux/slab.h>
  41 #include "radeon_reg.h"
  42 #include "radeon.h"
  43
  44 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
  45
  46 static int radeon_ttm_debugfs_init(struct radeon_device *rdev);
  47
  48 static struct radeon_device *radeon_get_rdev(struct ttm_bo_device *bdev)
  49 {
  50         struct radeon_mman *mman;
  51         struct radeon_device *rdev;
  52
  53         mman = container_of(bdev, struct radeon_mman, bdev);
  54         rdev = container_of(mman, struct radeon_device, mman);
  55         return rdev;
  56 }
  57
  58
  59 /*
  60  * Global memory.
  61  */
  62 static int radeon_ttm_mem_global_init(struct drm_global_reference *ref)
  63 {
  64         return ttm_mem_global_init(ref->object);
  65 }
  66
  67 static void radeon_ttm_mem_global_release(struct drm_global_reference *ref)
  68 {
  69         ttm_mem_global_release(ref->object);
  70 }
  71
  72 static int radeon_ttm_global_init(struct radeon_device *rdev)
  73 {
  74         struct drm_global_reference *global_ref;
  75         int r;
  76
  77         rdev->mman.mem_global_referenced = false;
  78         global_ref = &rdev->mman.mem_global_ref;
  79         global_ref->global_type = DRM_GLOBAL_TTM_MEM;
  80         global_ref->size = sizeof(struct ttm_mem_global);
  81         global_ref->init = &radeon_ttm_mem_global_init;
  82         global_ref->release = &radeon_ttm_mem_global_release;
  83         r = drm_global_item_ref(global_ref);
  84         if (r != 0) {
  85                 DRM_ERROR("Failed setting up TTM memory accounting "
  86                           "subsystem.\n");
  87                 return r;
  88         }
  89
  90         rdev->mman.bo_global_ref.mem_glob =
  91                 rdev->mman.mem_global_ref.object;
  92         global_ref = &rdev->mman.bo_global_ref.ref;
  93         global_ref->global_type = DRM_GLOBAL_TTM_BO;
  94         global_ref->size = sizeof(struct ttm_bo_global);
  95         global_ref->init = &ttm_bo_global_init;
  96         global_ref->release = &ttm_bo_global_release;
  97         r = drm_global_item_ref(global_ref);
  98         if (r != 0) {
  99                 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
 100                 drm_global_item_unref(&rdev->mman.mem_global_ref);
 101                 return r;
 102         }
 103
 104         rdev->mman.mem_global_referenced = true;
 105         return 0;
 106 }
 107
 108 static void radeon_ttm_global_fini(struct radeon_device *rdev)
 109 {
 110         if (rdev->mman.mem_global_referenced) {
 111                 drm_global_item_unref(&rdev->mman.bo_global_ref.ref);
 112                 drm_global_item_unref(&rdev->mman.mem_global_ref);
 113                 rdev->mman.mem_global_referenced = false;
 114         }
 115 }
 116
 117 static int radeon_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
 118 {
 119         return 0;
 120 }
 121
 122 static int radeon_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
 123                                 struct ttm_mem_type_manager *man)
 124 {
 125         struct radeon_device *rdev;
 126
 127         rdev = radeon_get_rdev(bdev);
 128
 129         switch (type) {
 130         case TTM_PL_SYSTEM:
 131                 /* System memory */
 132                 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
 133                 man->available_caching = TTM_PL_MASK_CACHING;
 134                 man->default_caching = TTM_PL_FLAG_CACHED;
 135                 break;
 136         case TTM_PL_TT:
 137                 man->func = &ttm_bo_manager_func;
 138                 man->gpu_offset = rdev->mc.gtt_start;
 139                 man->available_caching = TTM_PL_MASK_CACHING;
 140                 man->default_caching = TTM_PL_FLAG_CACHED;
 141                 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA;
 142 #if __OS_HAS_AGP
 143                 if (rdev->flags & RADEON_IS_AGP) {
 144                         if (!(drm_core_has_AGP(rdev->ddev) && rdev->ddev->agp)) {
 145                                 DRM_ERROR("AGP is not enabled for memory type %u\n",
 146                                           (unsigned)type);
 147                                 return -EINVAL;
 148                         }
 149                         if (!rdev->ddev->agp->cant_use_aperture)
 150                                 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
 151                         man->available_caching = TTM_PL_FLAG_UNCACHED |
 152                                                  TTM_PL_FLAG_WC;
 153                         man->default_caching = TTM_PL_FLAG_WC;
 154                 }
 155 #endif
 156                 break;
 157         case TTM_PL_VRAM:
 158                 /* "On-card" video ram */
 159                 man->func = &ttm_bo_manager_func;
 160                 man->gpu_offset = rdev->mc.vram_start;
 161                 man->flags = TTM_MEMTYPE_FLAG_FIXED |
 162                              TTM_MEMTYPE_FLAG_MAPPABLE;
 163                 man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
 164                 man->default_caching = TTM_PL_FLAG_WC;
 165                 break;
 166         default:
 167                 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
 168                 return -EINVAL;
 169         }
 170         return 0;
 171 }
 172
 173 static void radeon_evict_flags(struct ttm_buffer_object *bo,
 174                                 struct ttm_placement *placement)
 175 {
 176         struct radeon_bo *rbo;
 177         static u32 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
 178
 179         if (!radeon_ttm_bo_is_radeon_bo(bo)) {
 180                 placement->fpfn = 0;
 181                 placement->lpfn = 0;
 182                 placement->placement = &placements;
 183                 placement->busy_placement = &placements;
 184                 placement->num_placement = 1;
 185                 placement->num_busy_placement = 1;
 186                 return;
 187         }
 188         rbo = container_of(bo, struct radeon_bo, tbo);
 189         switch (bo->mem.mem_type) {
 190         case TTM_PL_VRAM:
 191                 if (rbo->rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready == false)
 192                         radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
 193                 else
 194                         radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);
 195                 break;
 196         case TTM_PL_TT:
 197         default:
 198                 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
 199         }
 200         *placement = rbo->placement;
 201 }
 202
 203 static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp)
 204 {
 205         return 0;
 206 }
 207
 208 static void radeon_move_null(struct ttm_buffer_object *bo,
 209                              struct ttm_mem_reg *new_mem)
 210 {
 211         struct ttm_mem_reg *old_mem = &bo->mem;
 212
 213         BUG_ON(old_mem->mm_node != NULL);
 214         *old_mem = *new_mem;
 215         new_mem->mm_node = NULL;
 216 }
 217
 218 static int radeon_move_blit(struct ttm_buffer_object *bo,
 219                         bool evict, int no_wait_reserve, bool no_wait_gpu,
 220                         struct ttm_mem_reg *new_mem,
 221                         struct ttm_mem_reg *old_mem)
 222 {
 223         struct radeon_device *rdev;
 224         uint64_t old_start, new_start;
 225         struct radeon_fence *fence;
 226         int r, ridx;
 227
 228         rdev = radeon_get_rdev(bo->bdev);
 229         ridx = radeon_copy_ring_index(rdev);
 230         old_start = old_mem->start << PAGE_SHIFT;
 231         new_start = new_mem->start << PAGE_SHIFT;
 232
 233         switch (old_mem->mem_type) {
 234         case TTM_PL_VRAM:
 235                 old_start += rdev->mc.vram_start;
 236                 break;
 237         case TTM_PL_TT:
 238                 old_start += rdev->mc.gtt_start;
 239                 break;
 240         default:
 241                 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
 242                 return -EINVAL;
 243         }
 244         switch (new_mem->mem_type) {
 245         case TTM_PL_VRAM:
 246                 new_start += rdev->mc.vram_start;
 247                 break;
 248         case TTM_PL_TT:
 249                 new_start += rdev->mc.gtt_start;
 250                 break;
 251         default:
 252                 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
 253                 return -EINVAL;
 254         }
 255         if (!rdev->ring[ridx].ready) {
 256                 DRM_ERROR("Trying to move memory with ring turned off.\n");
 257                 return -EINVAL;
 258         }
 259
 260         BUILD_BUG_ON((PAGE_SIZE % RADEON_GPU_PAGE_SIZE) != 0);
 261
 262         /* sync other rings */
 263         fence = bo->sync_obj;
 264         r = radeon_copy(rdev, old_start, new_start,
 265                         new_mem->num_pages * (PAGE_SIZE / RADEON_GPU_PAGE_SIZE), /* GPU pages */
 266                         &fence);
 267         /* FIXME: handle copy error */
 268         r = ttm_bo_move_accel_cleanup(bo, (void *)fence, NULL,
 269                                       evict, no_wait_reserve, no_wait_gpu, new_mem);
 270         radeon_fence_unref(&fence);
 271         return r;
 272 }
 273
 274 static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
 275                                 bool evict, bool interruptible,
 276                                 bool no_wait_reserve, bool no_wait_gpu,
 277                                 struct ttm_mem_reg *new_mem)
 278 {
 279         struct radeon_device *rdev;
 280         struct ttm_mem_reg *old_mem = &bo->mem;
 281         struct ttm_mem_reg tmp_mem;
 282         u32 placements;
 283         struct ttm_placement placement;
 284         int r;
 285
 286         rdev = radeon_get_rdev(bo->bdev);
 287         tmp_mem = *new_mem;
 288         tmp_mem.mm_node = NULL;
 289         placement.fpfn = 0;
 290         placement.lpfn = 0;
 291         placement.num_placement = 1;
 292         placement.placement = &placements;
 293         placement.num_busy_placement = 1;
 294         placement.busy_placement = &placements;
 295         placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
 296         r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
 297                              interruptible, no_wait_reserve, no_wait_gpu);
 298         if (unlikely(r)) {
 299                 return r;
 300         }
 301
 302         r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement);
 303         if (unlikely(r)) {
 304                 goto out_cleanup;
 305         }
 306
 307         r = ttm_tt_bind(bo->ttm, &tmp_mem);
 308         if (unlikely(r)) {
 309                 goto out_cleanup;
 310         }
 311         r = radeon_move_blit(bo, true, no_wait_reserve, no_wait_gpu, &tmp_mem, old_mem);
 312         if (unlikely(r)) {
 313                 goto out_cleanup;
 314         }
 315         r = ttm_bo_move_ttm(bo, true, no_wait_reserve, no_wait_gpu, new_mem);
 316 out_cleanup:
 317         ttm_bo_mem_put(bo, &tmp_mem);
 318         return r;
 319 }
 320
 321 static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
 322                                 bool evict, bool interruptible,
 323                                 bool no_wait_reserve, bool no_wait_gpu,
 324                                 struct ttm_mem_reg *new_mem)
 325 {
 326         struct radeon_device *rdev;
 327         struct ttm_mem_reg *old_mem = &bo->mem;
 328         struct ttm_mem_reg tmp_mem;
 329         struct ttm_placement placement;
 330         u32 placements;
 331         int r;
 332
 333         rdev = radeon_get_rdev(bo->bdev);
 334         tmp_mem = *new_mem;
 335         tmp_mem.mm_node = NULL;
 336         placement.fpfn = 0;
 337         placement.lpfn = 0;
 338         placement.num_placement = 1;
 339         placement.placement = &placements;
 340         placement.num_busy_placement = 1;
 341         placement.busy_placement = &placements;
 342         placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
 343         r = ttm_bo_mem_space(bo, &placement, &tmp_mem, interruptible, no_wait_reserve, no_wait_gpu);
 344         if (unlikely(r)) {
 345                 return r;
 346         }
 347         r = ttm_bo_move_ttm(bo, true, no_wait_reserve, no_wait_gpu, &tmp_mem);
 348         if (unlikely(r)) {
 349                 goto out_cleanup;
 350         }
 351         r = radeon_move_blit(bo, true, no_wait_reserve, no_wait_gpu, new_mem, old_mem);
 352         if (unlikely(r)) {
 353                 goto out_cleanup;
 354         }
 355 out_cleanup:
 356         ttm_bo_mem_put(bo, &tmp_mem);
 357         return r;
 358 }
 359
 360 static int radeon_bo_move(struct ttm_buffer_object *bo,
 361                         bool evict, bool interruptible,
 362                         bool no_wait_reserve, bool no_wait_gpu,
 363                         struct ttm_mem_reg *new_mem)
 364 {
 365         struct radeon_device *rdev;
 366         struct ttm_mem_reg *old_mem = &bo->mem;
 367         int r;
 368
 369         rdev = radeon_get_rdev(bo->bdev);
 370         if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
 371                 radeon_move_null(bo, new_mem);
 372                 return 0;
 373         }
 374         if ((old_mem->mem_type == TTM_PL_TT &&
 375              new_mem->mem_type == TTM_PL_SYSTEM) ||
 376             (old_mem->mem_type == TTM_PL_SYSTEM &&
 377              new_mem->mem_type == TTM_PL_TT)) {
 378                 /* bind is enough */
 379                 radeon_move_null(bo, new_mem);
 380                 return 0;
 381         }
 382         if (!rdev->ring[radeon_copy_ring_index(rdev)].ready ||
 383             rdev->asic->copy.copy == NULL) {
 384                 /* use memcpy */
 385                 goto memcpy;
 386         }
 387
 388         if (old_mem->mem_type == TTM_PL_VRAM &&
 389             new_mem->mem_type == TTM_PL_SYSTEM) {
 390                 r = radeon_move_vram_ram(bo, evict, interruptible,
 391                                         no_wait_reserve, no_wait_gpu, new_mem);
 392         } else if (old_mem->mem_type == TTM_PL_SYSTEM &&
 393                    new_mem->mem_type == TTM_PL_VRAM) {
 394                 r = radeon_move_ram_vram(bo, evict, interruptible,
 395                                             no_wait_reserve, no_wait_gpu, new_mem);
 396         } else {
 397                 r = radeon_move_blit(bo, evict, no_wait_reserve, no_wait_gpu, new_mem, old_mem);
 398         }
 399
 400         if (r) {
 401 memcpy:
 402                 r = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, new_mem);
 403         }
 404         return r;
 405 }
 406
 407 static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
 408 {
 409         struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
 410         struct radeon_device *rdev = radeon_get_rdev(bdev);
 411
 412         mem->bus.addr = NULL;
 413         mem->bus.offset = 0;
 414         mem->bus.size = mem->num_pages << PAGE_SHIFT;
 415         mem->bus.base = 0;
 416         mem->bus.is_iomem = false;
 417         if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
 418                 return -EINVAL;
 419         switch (mem->mem_type) {
 420         case TTM_PL_SYSTEM:
 421                 /* system memory */
 422                 return 0;
 423         case TTM_PL_TT:
 424 #if __OS_HAS_AGP
 425                 if (rdev->flags & RADEON_IS_AGP) {
 426                         /* RADEON_IS_AGP is set only if AGP is active */
 427                         mem->bus.offset = mem->start << PAGE_SHIFT;
 428                         mem->bus.base = rdev->mc.agp_base;
 429                         mem->bus.is_iomem = !rdev->ddev->agp->cant_use_aperture;
 430                 }
 431 #endif
 432                 break;
 433         case TTM_PL_VRAM:
 434                 mem->bus.offset = mem->start << PAGE_SHIFT;
 435                 /* check if it's visible */
 436                 if ((mem->bus.offset + mem->bus.size) > rdev->mc.visible_vram_size)
 437                         return -EINVAL;
 438                 mem->bus.base = rdev->mc.aper_base;
 439                 mem->bus.is_iomem = true;
 440 #ifdef __alpha__
 441                 /*
 442                  * Alpha: use bus.addr to hold the ioremap() return,
 443                  * so we can modify bus.base below.
 444                  */
 445                 if (mem->placement & TTM_PL_FLAG_WC)
 446                         mem->bus.addr =
 447                                 ioremap_wc(mem->bus.base + mem->bus.offset,
 448                                            mem->bus.size);
 449                 else
 450                         mem->bus.addr =
 451                                 ioremap_nocache(mem->bus.base + mem->bus.offset,
 452                                                 mem->bus.size);
 453
 454                 /*
 455                  * Alpha: Use just the bus offset plus
 456                  * the hose/domain memory base for bus.base.
 457                  * It then can be used to build PTEs for VRAM
 458                  * access, as done in ttm_bo_vm_fault().
 459                  */
 460                 mem->bus.base = (mem->bus.base & 0x0ffffffffUL) +
 461                         rdev->ddev->hose->dense_mem_base;
 462 #endif
 463                 break;
 464         default:
 465                 return -EINVAL;
 466         }
 467         return 0;
 468 }
 469
 470 static void radeon_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
 471 {
 472 }
 473
 474 static int radeon_sync_obj_wait(void *sync_obj, void *sync_arg,
 475                                 bool lazy, bool interruptible)
 476 {
 477         return radeon_fence_wait((struct radeon_fence *)sync_obj, interruptible);
 478 }
 479
 480 static int radeon_sync_obj_flush(void *sync_obj, void *sync_arg)
 481 {
 482         return 0;
 483 }
 484
 485 static void radeon_sync_obj_unref(void **sync_obj)
 486 {
 487         radeon_fence_unref((struct radeon_fence **)sync_obj);
 488 }
 489
 490 static void *radeon_sync_obj_ref(void *sync_obj)
 491 {
 492         return radeon_fence_ref((struct radeon_fence *)sync_obj);
 493 }
 494
 495 static bool radeon_sync_obj_signaled(void *sync_obj, void *sync_arg)
 496 {
 497         return radeon_fence_signaled((struct radeon_fence *)sync_obj);
 498 }
 499
 500 /*
 501  * TTM backend functions.
 502  */
 503 struct radeon_ttm_tt {
 504         struct ttm_dma_tt               ttm;
 505         struct radeon_device            *rdev;
 506         u64                             offset;
 507 };
 508
 509 static int radeon_ttm_backend_bind(struct ttm_tt *ttm,
 510                                    struct ttm_mem_reg *bo_mem)
 511 {
 512         struct radeon_ttm_tt *gtt = (void*)ttm;
 513         int r;
 514
 515         gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
 516         if (!ttm->num_pages) {
 517                 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
 518                      ttm->num_pages, bo_mem, ttm);
 519         }
 520         r = radeon_gart_bind(gtt->rdev, gtt->offset,
 521                              ttm->num_pages, ttm->pages, gtt->ttm.dma_address);
 522         if (r) {
 523                 DRM_ERROR("failed to bind %lu pages at 0x%08X\n",
 524                           ttm->num_pages, (unsigned)gtt->offset);
 525                 return r;
 526         }
 527         return 0;
 528 }
 529
 530 static int radeon_ttm_backend_unbind(struct ttm_tt *ttm)
 531 {
 532         struct radeon_ttm_tt *gtt = (void *)ttm;
 533
 534         radeon_gart_unbind(gtt->rdev, gtt->offset, ttm->num_pages);
 535         return 0;
 536 }
 537
 538 static void radeon_ttm_backend_destroy(struct ttm_tt *ttm)
 539 {
 540         struct radeon_ttm_tt *gtt = (void *)ttm;
 541
 542         ttm_dma_tt_fini(&gtt->ttm);
 543         kfree(gtt);
 544 }
 545
 546 static struct ttm_backend_func radeon_backend_func = {
 547         .bind = &radeon_ttm_backend_bind,
 548         .unbind = &radeon_ttm_backend_unbind,
 549         .destroy = &radeon_ttm_backend_destroy,
 550 };
 551
 552 struct ttm_tt *radeon_ttm_tt_create(struct ttm_bo_device *bdev,
 553                                     unsigned long size, uint32_t page_flags,
 554                                     struct page *dummy_read_page)
 555 {
 556         struct radeon_device *rdev;
 557         struct radeon_ttm_tt *gtt;
 558
 559         rdev = radeon_get_rdev(bdev);
 560 #if __OS_HAS_AGP
 561         if (rdev->flags & RADEON_IS_AGP) {
 562                 return ttm_agp_tt_create(bdev, rdev->ddev->agp->bridge,
 563                                          size, page_flags, dummy_read_page);
 564         }
 565 #endif
 566
 567         gtt = kzalloc(sizeof(struct radeon_ttm_tt), GFP_KERNEL);
 568         if (gtt == NULL) {
 569                 return NULL;
 570         }
 571         gtt->ttm.ttm.func = &radeon_backend_func;
 572         gtt->rdev = rdev;
 573         if (ttm_dma_tt_init(&gtt->ttm, bdev, size, page_flags, dummy_read_page)) {
 574                 kfree(gtt);
 575                 return NULL;
 576         }
 577         return &gtt->ttm.ttm;
 578 }
 579
 580 static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
 581 {
 582         struct radeon_device *rdev;
 583         struct radeon_ttm_tt *gtt = (void *)ttm;
 584         unsigned i;
 585         int r;
 586         bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
 587
 588         if (ttm->state != tt_unpopulated)
 589                 return 0;
 590
 591         if (slave && ttm->sg) {
 592                 drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
 593                                                  gtt->ttm.dma_address, ttm->num_pages);
 594                 ttm->state = tt_unbound;
 595                 return 0;
 596         }
 597
 598         rdev = radeon_get_rdev(ttm->bdev);
 599 #if __OS_HAS_AGP
 600         if (rdev->flags & RADEON_IS_AGP) {
 601                 return ttm_agp_tt_populate(ttm);
 602         }
 603 #endif
 604
 605 #ifdef CONFIG_SWIOTLB
 606         if (swiotlb_nr_tbl()) {
 607                 return ttm_dma_populate(&gtt->ttm, rdev->dev);
 608         }
 609 #endif
 610
 611         r = ttm_pool_populate(ttm);
 612         if (r) {
 613                 return r;
 614         }
 615
 616         for (i = 0; i < ttm->num_pages; i++) {
 617                 gtt->ttm.dma_address[i] = pci_map_page(rdev->pdev, ttm->pages[i],
 618                                                        0, PAGE_SIZE,
 619                                                        PCI_DMA_BIDIRECTIONAL);
 620                 if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) {
 621                         while (--i) {
 622                                 pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
 623                                                PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 624                                 gtt->ttm.dma_address[i] = 0;
 625                         }
 626                         ttm_pool_unpopulate(ttm);
 627                         return -EFAULT;
 628                 }
 629         }
 630         return 0;
 631 }
 632
 633 static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm)
 634 {
 635         struct radeon_device *rdev;
 636         struct radeon_ttm_tt *gtt = (void *)ttm;
 637         unsigned i;
 638         bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
 639
 640         if (slave)
 641                 return;
 642
 643         rdev = radeon_get_rdev(ttm->bdev);
 644 #if __OS_HAS_AGP
 645         if (rdev->flags & RADEON_IS_AGP) {
 646                 ttm_agp_tt_unpopulate(ttm);
 647                 return;
 648         }
 649 #endif
 650
 651 #ifdef CONFIG_SWIOTLB
 652         if (swiotlb_nr_tbl()) {
 653                 ttm_dma_unpopulate(&gtt->ttm, rdev->dev);
 654                 return;
 655         }
 656 #endif
 657
 658         for (i = 0; i < ttm->num_pages; i++) {
 659                 if (gtt->ttm.dma_address[i]) {
 660                         pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
 661                                        PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 662                 }
 663         }
 664
 665         ttm_pool_unpopulate(ttm);
 666 }
 667
 668 static struct ttm_bo_driver radeon_bo_driver = {
 669         .ttm_tt_create = &radeon_ttm_tt_create,
 670         .ttm_tt_populate = &radeon_ttm_tt_populate,
 671         .ttm_tt_unpopulate = &radeon_ttm_tt_unpopulate,
 672         .invalidate_caches = &radeon_invalidate_caches,
 673         .init_mem_type = &radeon_init_mem_type,
 674         .evict_flags = &radeon_evict_flags,
 675         .move = &radeon_bo_move,
 676         .verify_access = &radeon_verify_access,
 677         .sync_obj_signaled = &radeon_sync_obj_signaled,
 678         .sync_obj_wait = &radeon_sync_obj_wait,
 679         .sync_obj_flush = &radeon_sync_obj_flush,
 680         .sync_obj_unref = &radeon_sync_obj_unref,
 681         .sync_obj_ref = &radeon_sync_obj_ref,
 682         .move_notify = &radeon_bo_move_notify,
 683         .fault_reserve_notify = &radeon_bo_fault_reserve_notify,
 684         .io_mem_reserve = &radeon_ttm_io_mem_reserve,
 685         .io_mem_free = &radeon_ttm_io_mem_free,
 686 };
 687
 688 int radeon_ttm_init(struct radeon_device *rdev)
 689 {
 690         int r;
 691
 692         r = radeon_ttm_global_init(rdev);
 693         if (r) {
 694                 return r;
 695         }
 696         /* No others user of address space so set it to 0 */
 697         r = ttm_bo_device_init(&rdev->mman.bdev,
 698                                rdev->mman.bo_global_ref.ref.object,
 699                                &radeon_bo_driver, DRM_FILE_PAGE_OFFSET,
 700                                rdev->need_dma32);
 701         if (r) {
 702                 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
 703                 return r;
 704         }
 705         rdev->mman.initialized = true;
 706         r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_VRAM,
 707                                 rdev->mc.real_vram_size >> PAGE_SHIFT);
 708         if (r) {
 709                 DRM_ERROR("Failed initializing VRAM heap.\n");
 710                 return r;
 711         }
 712         r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true,
 713                              RADEON_GEM_DOMAIN_VRAM,
 714                              NULL, &rdev->stollen_vga_memory);
 715         if (r) {
 716                 return r;
 717         }
 718         r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
 719         if (r)
 720                 return r;
 721         r = radeon_bo_pin(rdev->stollen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL);
 722         radeon_bo_unreserve(rdev->stollen_vga_memory);
 723         if (r) {
 724                 radeon_bo_unref(&rdev->stollen_vga_memory);
 725                 return r;
 726         }
 727         DRM_INFO("radeon: %uM of VRAM memory ready\n",
 728                  (unsigned)rdev->mc.real_vram_size / (1024 * 1024));
 729         r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_TT,
 730                                 rdev->mc.gtt_size >> PAGE_SHIFT);
 731         if (r) {
 732                 DRM_ERROR("Failed initializing GTT heap.\n");
 733                 return r;
 734         }
 735         DRM_INFO("radeon: %uM of GTT memory ready.\n",
 736                  (unsigned)(rdev->mc.gtt_size / (1024 * 1024)));
 737         if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
 738                 rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
 739         }
 740
 741         r = radeon_ttm_debugfs_init(rdev);
 742         if (r) {
 743                 DRM_ERROR("Failed to init debugfs\n");
 744                 return r;
 745         }
 746         return 0;
 747 }
 748
 749 void radeon_ttm_fini(struct radeon_device *rdev)
 750 {
 751         int r;
 752
 753         if (!rdev->mman.initialized)
 754                 return;
 755         if (rdev->stollen_vga_memory) {
 756                 r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
 757                 if (r == 0) {
 758                         radeon_bo_unpin(rdev->stollen_vga_memory);
 759                         radeon_bo_unreserve(rdev->stollen_vga_memory);
 760                 }
 761                 radeon_bo_unref(&rdev->stollen_vga_memory);
 762         }
 763         ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_VRAM);
 764         ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_TT);
 765         ttm_bo_device_release(&rdev->mman.bdev);
 766         radeon_gart_fini(rdev);
 767         radeon_ttm_global_fini(rdev);
 768         rdev->mman.initialized = false;
 769         DRM_INFO("radeon: ttm finalized\n");
 770 }
 771
 772 /* this should only be called at bootup or when userspace
 773  * isn't running */
 774 void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size)
 775 {
 776         struct ttm_mem_type_manager *man;
 777
 778         if (!rdev->mman.initialized)
 779                 return;
 780
 781         man = &rdev->mman.bdev.man[TTM_PL_VRAM];
 782         /* this just adjusts TTM size idea, which sets lpfn to the correct value */
 783         man->size = size >> PAGE_SHIFT;
 784 }
 785
 786 static struct vm_operations_struct radeon_ttm_vm_ops;
 787 static const struct vm_operations_struct *ttm_vm_ops = NULL;
 788
 789 static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 790 {
 791         struct ttm_buffer_object *bo;
 792         struct radeon_device *rdev;
 793         int r;
 794
 795         bo = (struct ttm_buffer_object *)vma->vm_private_data;
 796         if (bo == NULL) {
 797                 return VM_FAULT_NOPAGE;
 798         }
 799         rdev = radeon_get_rdev(bo->bdev);
 800         mutex_lock(&rdev->vram_mutex);
 801         r = ttm_vm_ops->fault(vma, vmf);
 802         mutex_unlock(&rdev->vram_mutex);
 803         return r;
 804 }
 805
 806 int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
 807 {
 808         struct drm_file *file_priv;
 809         struct radeon_device *rdev;
 810         int r;
 811
 812         if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
 813                 return drm_mmap(filp, vma);
 814         }
 815
 816         file_priv = filp->private_data;
 817         rdev = file_priv->minor->dev->dev_private;
 818         if (rdev == NULL) {
 819                 return -EINVAL;
 820         }
 821         r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev);
 822         if (unlikely(r != 0)) {
 823                 return r;
 824         }
 825         if (unlikely(ttm_vm_ops == NULL)) {
 826                 ttm_vm_ops = vma->vm_ops;
 827                 radeon_ttm_vm_ops = *ttm_vm_ops;
 828                 radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
 829         }
 830         vma->vm_ops = &radeon_ttm_vm_ops;
 831         return 0;
 832 }
 833
 834
 835 #define RADEON_DEBUGFS_MEM_TYPES 2
 836
 837 #if defined(CONFIG_DEBUG_FS)
 838 static int radeon_mm_dump_table(struct seq_file *m, void *data)
 839 {
 840         struct drm_info_node *node = (struct drm_info_node *)m->private;
 841         struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
 842         struct drm_device *dev = node->minor->dev;
 843         struct radeon_device *rdev = dev->dev_private;
 844         int ret;
 845         struct ttm_bo_global *glob = rdev->mman.bdev.glob;
 846
 847         spin_lock(&glob->lru_lock);
 848         ret = drm_mm_dump_table(m, mm);
 849         spin_unlock(&glob->lru_lock);
 850         return ret;
 851 }
 852 #endif
 853
 854 static int radeon_ttm_debugfs_init(struct radeon_device *rdev)
 855 {
 856 #if defined(CONFIG_DEBUG_FS)
 857         static struct drm_info_list radeon_mem_types_list[RADEON_DEBUGFS_MEM_TYPES+2];
 858         static char radeon_mem_types_names[RADEON_DEBUGFS_MEM_TYPES+2][32];
 859         unsigned i;
 860
 861         for (i = 0; i < RADEON_DEBUGFS_MEM_TYPES; i++) {
 862                 if (i == 0)
 863                         sprintf(radeon_mem_types_names[i], "radeon_vram_mm");
 864                 else
 865                         sprintf(radeon_mem_types_names[i], "radeon_gtt_mm");
 866                 radeon_mem_types_list[i].name = radeon_mem_types_names[i];
 867                 radeon_mem_types_list[i].show = &radeon_mm_dump_table;
 868                 radeon_mem_types_list[i].driver_features = 0;
 869                 if (i == 0)
 870                         radeon_mem_types_list[i].data = rdev->mman.bdev.man[TTM_PL_VRAM].priv;
 871                 else
 872                         radeon_mem_types_list[i].data = rdev->mman.bdev.man[TTM_PL_TT].priv;
 873
 874         }
 875         /* Add ttm page pool to debugfs */
 876         sprintf(radeon_mem_types_names[i], "ttm_page_pool");
 877         radeon_mem_types_list[i].name = radeon_mem_types_names[i];
 878         radeon_mem_types_list[i].show = &ttm_page_alloc_debugfs;
 879         radeon_mem_types_list[i].driver_features = 0;
 880         radeon_mem_types_list[i++].data = NULL;
 881 #ifdef CONFIG_SWIOTLB
 882         if (swiotlb_nr_tbl()) {
 883                 sprintf(radeon_mem_types_names[i], "ttm_dma_page_pool");
 884                 radeon_mem_types_list[i].name = radeon_mem_types_names[i];
 885                 radeon_mem_types_list[i].show = &ttm_dma_page_alloc_debugfs;
 886                 radeon_mem_types_list[i].driver_features = 0;
 887                 radeon_mem_types_list[i++].data = NULL;
 888         }
 889 #endif
 890         return radeon_debugfs_add_files(rdev, radeon_mem_types_list, i);
 891
 892 #endif
 893         return 0;
 894 }