drivers/gpu/drm/radeon/radeon_object.c

   1 /*
   2  * Copyright 2009 Jerome Glisse.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  16  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  17  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  18  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  19  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  *
  21  * The above copyright notice and this permission notice (including the
  22  * next paragraph) shall be included in all copies or substantial portions
  23  * of the Software.
  24  *
  25  */
  26 /*
  27  * Authors:
  28  *    Jerome Glisse <[email protected]>
  29  *    Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
  30  *    Dave Airlie
  31  */
  32 #include <linux/list.h>
  33 #include <linux/slab.h>
  34 #include <drm/drmP.h>
  35 #include <drm/radeon_drm.h>
  36 #include "radeon.h"
  37 #include "radeon_trace.h"
  38
  39
  40 int radeon_ttm_init(struct radeon_device *rdev);
  41 void radeon_ttm_fini(struct radeon_device *rdev);
  42 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo);
  43
  44 /*
  45  * To exclude mutual BO access we rely on bo_reserve exclusion, as all
  46  * function are calling it.
  47  */
  48
  49 static void radeon_update_memory_usage(struct radeon_bo *bo,
  50                                        unsigned mem_type, int sign)
  51 {
  52         struct radeon_device *rdev = bo->rdev;
  53         u64 size = (u64)bo->tbo.num_pages << PAGE_SHIFT;
  54
  55         switch (mem_type) {
  56         case TTM_PL_TT:
  57                 if (sign > 0)
  58                         atomic64_add(size, &rdev->gtt_usage);
  59                 else
  60                         atomic64_sub(size, &rdev->gtt_usage);
  61                 break;
  62         case TTM_PL_VRAM:
  63                 if (sign > 0)
  64                         atomic64_add(size, &rdev->vram_usage);
  65                 else
  66                         atomic64_sub(size, &rdev->vram_usage);
  67                 break;
  68         }
  69 }
  70
  71 static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
  72 {
  73         struct radeon_bo *bo;
  74
  75         bo = container_of(tbo, struct radeon_bo, tbo);
  76
  77         radeon_update_memory_usage(bo, bo->tbo.mem.mem_type, -1);
  78
  79         mutex_lock(&bo->rdev->gem.mutex);
  80         list_del_init(&bo->list);
  81         mutex_unlock(&bo->rdev->gem.mutex);
  82         radeon_bo_clear_surface_reg(bo);
  83         WARN_ON(!list_empty(&bo->va));
  84         drm_gem_object_release(&bo->gem_base);
  85         kfree(bo);
  86 }
  87
  88 bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo)
  89 {
  90         if (bo->destroy == &radeon_ttm_bo_destroy)
  91                 return true;
  92         return false;
  93 }
  94
  95 void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
  96 {
  97         u32 c = 0, i;
  98
  99         rbo->placement.placement = rbo->placements;
 100         rbo->placement.busy_placement = rbo->placements;
 101         if (domain & RADEON_GEM_DOMAIN_VRAM) {
 102                 /* Try placing BOs which don't need CPU access outside of the
 103                  * CPU accessible part of VRAM
 104                  */
 105                 if ((rbo->flags & RADEON_GEM_NO_CPU_ACCESS) &&
 106                     rbo->rdev->mc.visible_vram_size < rbo->rdev->mc.real_vram_size) {
 107                         rbo->placements[c].fpfn =
 108                                 rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
 109                         rbo->placements[c++].flags = TTM_PL_FLAG_WC |
 110                                                      TTM_PL_FLAG_UNCACHED |
 111                                                      TTM_PL_FLAG_VRAM;
 112                 }
 113
 114                 rbo->placements[c].fpfn = 0;
 115                 rbo->placements[c++].flags = TTM_PL_FLAG_WC |
 116                                              TTM_PL_FLAG_UNCACHED |
 117                                              TTM_PL_FLAG_VRAM;
 118         }
 119
 120         if (domain & RADEON_GEM_DOMAIN_GTT) {
 121                 if (rbo->flags & RADEON_GEM_GTT_UC) {
 122                         rbo->placements[c].fpfn = 0;
 123                         rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED |
 124                                 TTM_PL_FLAG_TT;
 125
 126                 } else if ((rbo->flags & RADEON_GEM_GTT_WC) ||
 127                            (rbo->rdev->flags & RADEON_IS_AGP)) {
 128                         rbo->placements[c].fpfn = 0;
 129                         rbo->placements[c++].flags = TTM_PL_FLAG_WC |
 130                                 TTM_PL_FLAG_UNCACHED |
 131                                 TTM_PL_FLAG_TT;
 132                 } else {
 133                         rbo->placements[c].fpfn = 0;
 134                         rbo->placements[c++].flags = TTM_PL_FLAG_CACHED |
 135                                                      TTM_PL_FLAG_TT;
 136                 }
 137         }
 138
 139         if (domain & RADEON_GEM_DOMAIN_CPU) {
 140                 if (rbo->flags & RADEON_GEM_GTT_UC) {
 141                         rbo->placements[c].fpfn = 0;
 142                         rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED |
 143                                 TTM_PL_FLAG_SYSTEM;
 144
 145                 } else if ((rbo->flags & RADEON_GEM_GTT_WC) ||
 146                     rbo->rdev->flags & RADEON_IS_AGP) {
 147                         rbo->placements[c].fpfn = 0;
 148                         rbo->placements[c++].flags = TTM_PL_FLAG_WC |
 149                                 TTM_PL_FLAG_UNCACHED |
 150                                 TTM_PL_FLAG_SYSTEM;
 151                 } else {
 152                         rbo->placements[c].fpfn = 0;
 153                         rbo->placements[c++].flags = TTM_PL_FLAG_CACHED |
 154                                                      TTM_PL_FLAG_SYSTEM;
 155                 }
 156         }
 157         if (!c) {
 158                 rbo->placements[c].fpfn = 0;
 159                 rbo->placements[c++].flags = TTM_PL_MASK_CACHING |
 160                                              TTM_PL_FLAG_SYSTEM;
 161         }
 162
 163         rbo->placement.num_placement = c;
 164         rbo->placement.num_busy_placement = c;
 165
 166         for (i = 0; i < c; ++i) {
 167                 if ((rbo->flags & RADEON_GEM_CPU_ACCESS) &&
 168                     (rbo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 169                     !rbo->placements[i].fpfn)
 170                         rbo->placements[i].lpfn =
 171                                 rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
 172                 else
 173                         rbo->placements[i].lpfn = 0;
 174         }
 175 }
 176
 177 int radeon_bo_create(struct radeon_device *rdev,
 178                      unsigned long size, int byte_align, bool kernel,
 179                      u32 domain, u32 flags, struct sg_table *sg,
 180                      struct reservation_object *resv,
 181                      struct radeon_bo **bo_ptr)
 182 {
 183         struct radeon_bo *bo;
 184         enum ttm_bo_type type;
 185         unsigned long page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
 186         size_t acc_size;
 187         int r;
 188
 189         size = ALIGN(size, PAGE_SIZE);
 190
 191         if (kernel) {
 192                 type = ttm_bo_type_kernel;
 193         } else if (sg) {
 194                 type = ttm_bo_type_sg;
 195         } else {
 196                 type = ttm_bo_type_device;
 197         }
 198         *bo_ptr = NULL;
 199
 200         acc_size = ttm_bo_dma_acc_size(&rdev->mman.bdev, size,
 201                                        sizeof(struct radeon_bo));
 202
 203         bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL);
 204         if (bo == NULL)
 205                 return -ENOMEM;
 206         r = drm_gem_object_init(rdev->ddev, &bo->gem_base, size);
 207         if (unlikely(r)) {
 208                 kfree(bo);
 209                 return r;
 210         }
 211         bo->rdev = rdev;
 212         bo->surface_reg = -1;
 213         INIT_LIST_HEAD(&bo->list);
 214         INIT_LIST_HEAD(&bo->va);
 215         bo->initial_domain = domain & (RADEON_GEM_DOMAIN_VRAM |
 216                                        RADEON_GEM_DOMAIN_GTT |
 217                                        RADEON_GEM_DOMAIN_CPU);
 218
 219         bo->flags = flags;
 220         /* PCI GART is always snooped */
 221         if (!(rdev->flags & RADEON_IS_PCIE))
 222                 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
 223
 224 #ifdef CONFIG_X86_32
 225         /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
 226          * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
 227          */
 228         bo->flags &= ~RADEON_GEM_GTT_WC;
 229 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
 230         /* Don't try to enable write-combining when it can't work, or things
 231          * may be slow
 232          * See https://bugs.freedesktop.org/show_bug.cgi?id=88758
 233          */
 234
 235 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
 236          thanks to write-combining
 237
 238         DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
 239                       "better performance thanks to write-combining\n");
 240         bo->flags &= ~RADEON_GEM_GTT_WC;
 241 #endif
 242
 243         radeon_ttm_placement_from_domain(bo, domain);
 244         /* Kernel allocation are uninterruptible */
 245         down_read(&rdev->pm.mclk_lock);
 246         r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
 247                         &bo->placement, page_align, !kernel, NULL,
 248                         acc_size, sg, resv, &radeon_ttm_bo_destroy);
 249         up_read(&rdev->pm.mclk_lock);
 250         if (unlikely(r != 0)) {
 251                 return r;
 252         }
 253         *bo_ptr = bo;
 254
 255         trace_radeon_bo_create(bo);
 256
 257         return 0;
 258 }
 259
 260 int radeon_bo_kmap(struct radeon_bo *bo, void **ptr)
 261 {
 262         bool is_iomem;
 263         int r;
 264
 265         if (bo->kptr) {
 266                 if (ptr) {
 267                         *ptr = bo->kptr;
 268                 }
 269                 return 0;
 270         }
 271         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 272         if (r) {
 273                 return r;
 274         }
 275         bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 276         if (ptr) {
 277                 *ptr = bo->kptr;
 278         }
 279         radeon_bo_check_tiling(bo, 0, 0);
 280         return 0;
 281 }
 282
 283 void radeon_bo_kunmap(struct radeon_bo *bo)
 284 {
 285         if (bo->kptr == NULL)
 286                 return;
 287         bo->kptr = NULL;
 288         radeon_bo_check_tiling(bo, 0, 0);
 289         ttm_bo_kunmap(&bo->kmap);
 290 }
 291
 292 struct radeon_bo *radeon_bo_ref(struct radeon_bo *bo)
 293 {
 294         if (bo == NULL)
 295                 return NULL;
 296
 297         ttm_bo_reference(&bo->tbo);
 298         return bo;
 299 }
 300
 301 void radeon_bo_unref(struct radeon_bo **bo)
 302 {
 303         struct ttm_buffer_object *tbo;
 304         struct radeon_device *rdev;
 305
 306         if ((*bo) == NULL)
 307                 return;
 308         rdev = (*bo)->rdev;
 309         tbo = &((*bo)->tbo);
 310         ttm_bo_unref(&tbo);
 311         if (tbo == NULL)
 312                 *bo = NULL;
 313 }
 314
 315 int radeon_bo_pin_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset,
 316                              u64 *gpu_addr)
 317 {
 318         int r, i;
 319
 320         if (radeon_ttm_tt_has_userptr(bo->tbo.ttm))
 321                 return -EPERM;
 322
 323         if (bo->pin_count) {
 324                 bo->pin_count++;
 325                 if (gpu_addr)
 326                         *gpu_addr = radeon_bo_gpu_offset(bo);
 327
 328                 if (max_offset != 0) {
 329                         u64 domain_start;
 330
 331                         if (domain == RADEON_GEM_DOMAIN_VRAM)
 332                                 domain_start = bo->rdev->mc.vram_start;
 333                         else
 334                                 domain_start = bo->rdev->mc.gtt_start;
 335                         WARN_ON_ONCE(max_offset <
 336                                      (radeon_bo_gpu_offset(bo) - domain_start));
 337                 }
 338
 339                 return 0;
 340         }
 341         radeon_ttm_placement_from_domain(bo, domain);
 342         for (i = 0; i < bo->placement.num_placement; i++) {
 343                 /* force to pin into visible video ram */
 344                 if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 345                     !(bo->flags & RADEON_GEM_NO_CPU_ACCESS) &&
 346                     (!max_offset || max_offset > bo->rdev->mc.visible_vram_size))
 347                         bo->placements[i].lpfn =
 348                                 bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
 349                 else
 350                         bo->placements[i].lpfn = max_offset >> PAGE_SHIFT;
 351
 352                 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
 353         }
 354
 355         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 356         if (likely(r == 0)) {
 357                 bo->pin_count = 1;
 358                 if (gpu_addr != NULL)
 359                         *gpu_addr = radeon_bo_gpu_offset(bo);
 360                 if (domain == RADEON_GEM_DOMAIN_VRAM)
 361                         bo->rdev->vram_pin_size += radeon_bo_size(bo);
 362                 else
 363                         bo->rdev->gart_pin_size += radeon_bo_size(bo);
 364         } else {
 365                 dev_err(bo->rdev->dev, "%p pin failed\n", bo);
 366         }
 367         return r;
 368 }
 369
 370 int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr)
 371 {
 372         return radeon_bo_pin_restricted(bo, domain, 0, gpu_addr);
 373 }
 374
 375 int radeon_bo_unpin(struct radeon_bo *bo)
 376 {
 377         int r, i;
 378
 379         if (!bo->pin_count) {
 380                 dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo);
 381                 return 0;
 382         }
 383         bo->pin_count--;
 384         if (bo->pin_count)
 385                 return 0;
 386         for (i = 0; i < bo->placement.num_placement; i++) {
 387                 bo->placements[i].lpfn = 0;
 388                 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
 389         }
 390         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 391         if (likely(r == 0)) {
 392                 if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
 393                         bo->rdev->vram_pin_size -= radeon_bo_size(bo);
 394                 else
 395                         bo->rdev->gart_pin_size -= radeon_bo_size(bo);
 396         } else {
 397                 dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo);
 398         }
 399         return r;
 400 }
 401
 402 int radeon_bo_evict_vram(struct radeon_device *rdev)
 403 {
 404         /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
 405         if (0 && (rdev->flags & RADEON_IS_IGP)) {
 406                 if (rdev->mc.igp_sideport_enabled == false)
 407                         /* Useless to evict on IGP chips */
 408                         return 0;
 409         }
 410         return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM);
 411 }
 412
 413 void radeon_bo_force_delete(struct radeon_device *rdev)
 414 {
 415         struct radeon_bo *bo, *n;
 416
 417         if (list_empty(&rdev->gem.objects)) {
 418                 return;
 419         }
 420         dev_err(rdev->dev, "Userspace still has active objects !\n");
 421         list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
 422                 dev_err(rdev->dev, "%p %p %lu %lu force free\n",
 423                         &bo->gem_base, bo, (unsigned long)bo->gem_base.size,
 424                         *((unsigned long *)&bo->gem_base.refcount));
 425                 mutex_lock(&bo->rdev->gem.mutex);
 426                 list_del_init(&bo->list);
 427                 mutex_unlock(&bo->rdev->gem.mutex);
 428                 /* this should unref the ttm bo */
 429                 drm_gem_object_unreference_unlocked(&bo->gem_base);
 430         }
 431 }
 432
 433 int radeon_bo_init(struct radeon_device *rdev)
 434 {
 435         /* Add an MTRR for the VRAM */
 436         if (!rdev->fastfb_working) {
 437                 rdev->mc.vram_mtrr = arch_phys_wc_add(rdev->mc.aper_base,
 438                                                       rdev->mc.aper_size);
 439         }
 440         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 441                 rdev->mc.mc_vram_size >> 20,
 442                 (unsigned long long)rdev->mc.aper_size >> 20);
 443         DRM_INFO("RAM width %dbits %cDR\n",
 444                         rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S');
 445         return radeon_ttm_init(rdev);
 446 }
 447
 448 void radeon_bo_fini(struct radeon_device *rdev)
 449 {
 450         radeon_ttm_fini(rdev);
 451         arch_phys_wc_del(rdev->mc.vram_mtrr);
 452 }
 453
 454 /* Returns how many bytes TTM can move per IB.
 455  */
 456 static u64 radeon_bo_get_threshold_for_moves(struct radeon_device *rdev)
 457 {
 458         u64 real_vram_size = rdev->mc.real_vram_size;
 459         u64 vram_usage = atomic64_read(&rdev->vram_usage);
 460
 461         /* This function is based on the current VRAM usage.
 462          *
 463          * - If all of VRAM is free, allow relocating the number of bytes that
 464          *   is equal to 1/4 of the size of VRAM for this IB.
 465
 466          * - If more than one half of VRAM is occupied, only allow relocating
 467          *   1 MB of data for this IB.
 468          *
 469          * - From 0 to one half of used VRAM, the threshold decreases
 470          *   linearly.
 471          *         __________________
 472          * 1/4 of -|\               |
 473          * VRAM    | \              |
 474          *         |  \             |
 475          *         |   \            |
 476          *         |    \           |
 477          *         |     \          |
 478          *         |      \         |
 479          *         |       \________|1 MB
 480          *         |----------------|
 481          *    VRAM 0 %             100 %
 482          *         used            used
 483          *
 484          * Note: It's a threshold, not a limit. The threshold must be crossed
 485          * for buffer relocations to stop, so any buffer of an arbitrary size
 486          * can be moved as long as the threshold isn't crossed before
 487          * the relocation takes place. We don't want to disable buffer
 488          * relocations completely.
 489          *
 490          * The idea is that buffers should be placed in VRAM at creation time
 491          * and TTM should only do a minimum number of relocations during
 492          * command submission. In practice, you need to submit at least
 493          * a dozen IBs to move all buffers to VRAM if they are in GTT.
 494          *
 495          * Also, things can get pretty crazy under memory pressure and actual
 496          * VRAM usage can change a lot, so playing safe even at 50% does
 497          * consistently increase performance.
 498          */
 499
 500         u64 half_vram = real_vram_size >> 1;
 501         u64 half_free_vram = vram_usage >= half_vram ? 0 : half_vram - vram_usage;
 502         u64 bytes_moved_threshold = half_free_vram >> 1;
 503         return max(bytes_moved_threshold, 1024*1024ull);
 504 }
 505
 506 int radeon_bo_list_validate(struct radeon_device *rdev,
 507                             struct ww_acquire_ctx *ticket,
 508                             struct list_head *head, int ring)
 509 {
 510         struct radeon_bo_list *lobj;
 511         struct list_head duplicates;
 512         int r;
 513         u64 bytes_moved = 0, initial_bytes_moved;
 514         u64 bytes_moved_threshold = radeon_bo_get_threshold_for_moves(rdev);
 515
 516         INIT_LIST_HEAD(&duplicates);
 517         r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates);
 518         if (unlikely(r != 0)) {
 519                 return r;
 520         }
 521
 522         list_for_each_entry(lobj, head, tv.head) {
 523                 struct radeon_bo *bo = lobj->robj;
 524                 if (!bo->pin_count) {
 525                         u32 domain = lobj->prefered_domains;
 526                         u32 allowed = lobj->allowed_domains;
 527                         u32 current_domain =
 528                                 radeon_mem_type_to_domain(bo->tbo.mem.mem_type);
 529
 530                         /* Check if this buffer will be moved and don't move it
 531                          * if we have moved too many buffers for this IB already.
 532                          *
 533                          * Note that this allows moving at least one buffer of
 534                          * any size, because it doesn't take the current "bo"
 535                          * into account. We don't want to disallow buffer moves
 536                          * completely.
 537                          */
 538                         if ((allowed & current_domain) != 0 &&
 539                             (domain & current_domain) == 0 && /* will be moved */
 540                             bytes_moved > bytes_moved_threshold) {
 541                                 /* don't move it */
 542                                 domain = current_domain;
 543                         }
 544
 545                 retry:
 546                         radeon_ttm_placement_from_domain(bo, domain);
 547                         if (ring == R600_RING_TYPE_UVD_INDEX)
 548                                 radeon_uvd_force_into_uvd_segment(bo, allowed);
 549
 550                         initial_bytes_moved = atomic64_read(&rdev->num_bytes_moved);
 551                         r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
 552                         bytes_moved += atomic64_read(&rdev->num_bytes_moved) -
 553                                        initial_bytes_moved;
 554
 555                         if (unlikely(r)) {
 556                                 if (r != -ERESTARTSYS &&
 557                                     domain != lobj->allowed_domains) {
 558                                         domain = lobj->allowed_domains;
 559                                         goto retry;
 560                                 }
 561                                 ttm_eu_backoff_reservation(ticket, head);
 562                                 return r;
 563                         }
 564                 }
 565                 lobj->gpu_offset = radeon_bo_gpu_offset(bo);
 566                 lobj->tiling_flags = bo->tiling_flags;
 567         }
 568
 569         list_for_each_entry(lobj, &duplicates, tv.head) {
 570                 lobj->gpu_offset = radeon_bo_gpu_offset(lobj->robj);
 571                 lobj->tiling_flags = lobj->robj->tiling_flags;
 572         }
 573
 574         return 0;
 575 }
 576
 577 int radeon_bo_get_surface_reg(struct radeon_bo *bo)
 578 {
 579         struct radeon_device *rdev = bo->rdev;
 580         struct radeon_surface_reg *reg;
 581         struct radeon_bo *old_object;
 582         int steal;
 583         int i;
 584
 585         lockdep_assert_held(&bo->tbo.resv->lock.base);
 586
 587         if (!bo->tiling_flags)
 588                 return 0;
 589
 590         if (bo->surface_reg >= 0) {
 591                 reg = &rdev->surface_regs[bo->surface_reg];
 592                 i = bo->surface_reg;
 593                 goto out;
 594         }
 595
 596         steal = -1;
 597         for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
 598
 599                 reg = &rdev->surface_regs[i];
 600                 if (!reg->bo)
 601                         break;
 602
 603                 old_object = reg->bo;
 604                 if (old_object->pin_count == 0)
 605                         steal = i;
 606         }
 607
 608         /* if we are all out */
 609         if (i == RADEON_GEM_MAX_SURFACES) {
 610                 if (steal == -1)
 611                         return -ENOMEM;
 612                 /* find someone with a surface reg and nuke their BO */
 613                 reg = &rdev->surface_regs[steal];
 614                 old_object = reg->bo;
 615                 /* blow away the mapping */
 616                 DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object);
 617                 ttm_bo_unmap_virtual(&old_object->tbo);
 618                 old_object->surface_reg = -1;
 619                 i = steal;
 620         }
 621
 622         bo->surface_reg = i;
 623         reg->bo = bo;
 624
 625 out:
 626         radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch,
 627                                bo->tbo.mem.start << PAGE_SHIFT,
 628                                bo->tbo.num_pages << PAGE_SHIFT);
 629         return 0;
 630 }
 631
 632 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo)
 633 {
 634         struct radeon_device *rdev = bo->rdev;
 635         struct radeon_surface_reg *reg;
 636
 637         if (bo->surface_reg == -1)
 638                 return;
 639
 640         reg = &rdev->surface_regs[bo->surface_reg];
 641         radeon_clear_surface_reg(rdev, bo->surface_reg);
 642
 643         reg->bo = NULL;
 644         bo->surface_reg = -1;
 645 }
 646
 647 int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
 648                                 uint32_t tiling_flags, uint32_t pitch)
 649 {
 650         struct radeon_device *rdev = bo->rdev;
 651         int r;
 652
 653         if (rdev->family >= CHIP_CEDAR) {
 654                 unsigned bankw, bankh, mtaspect, tilesplit, stilesplit;
 655
 656                 bankw = (tiling_flags >> RADEON_TILING_EG_BANKW_SHIFT) & RADEON_TILING_EG_BANKW_MASK;
 657                 bankh = (tiling_flags >> RADEON_TILING_EG_BANKH_SHIFT) & RADEON_TILING_EG_BANKH_MASK;
 658                 mtaspect = (tiling_flags >> RADEON_TILING_EG_MACRO_TILE_ASPECT_SHIFT) & RADEON_TILING_EG_MACRO_TILE_ASPECT_MASK;
 659                 tilesplit = (tiling_flags >> RADEON_TILING_EG_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_TILE_SPLIT_MASK;
 660                 stilesplit = (tiling_flags >> RADEON_TILING_EG_STENCIL_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_STENCIL_TILE_SPLIT_MASK;
 661                 switch (bankw) {
 662                 case 0:
 663                 case 1:
 664                 case 2:
 665                 case 4:
 666                 case 8:
 667                         break;
 668                 default:
 669                         return -EINVAL;
 670                 }
 671                 switch (bankh) {
 672                 case 0:
 673                 case 1:
 674                 case 2:
 675                 case 4:
 676                 case 8:
 677                         break;
 678                 default:
 679                         return -EINVAL;
 680                 }
 681                 switch (mtaspect) {
 682                 case 0:
 683                 case 1:
 684                 case 2:
 685                 case 4:
 686                 case 8:
 687                         break;
 688                 default:
 689                         return -EINVAL;
 690                 }
 691                 if (tilesplit > 6) {
 692                         return -EINVAL;
 693                 }
 694                 if (stilesplit > 6) {
 695                         return -EINVAL;
 696                 }
 697         }
 698         r = radeon_bo_reserve(bo, false);
 699         if (unlikely(r != 0))
 700                 return r;
 701         bo->tiling_flags = tiling_flags;
 702         bo->pitch = pitch;
 703         radeon_bo_unreserve(bo);
 704         return 0;
 705 }
 706
 707 void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
 708                                 uint32_t *tiling_flags,
 709                                 uint32_t *pitch)
 710 {
 711         lockdep_assert_held(&bo->tbo.resv->lock.base);
 712
 713         if (tiling_flags)
 714                 *tiling_flags = bo->tiling_flags;
 715         if (pitch)
 716                 *pitch = bo->pitch;
 717 }
 718
 719 int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 720                                 bool force_drop)
 721 {
 722         if (!force_drop)
 723                 lockdep_assert_held(&bo->tbo.resv->lock.base);
 724
 725         if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
 726                 return 0;
 727
 728         if (force_drop) {
 729                 radeon_bo_clear_surface_reg(bo);
 730                 return 0;
 731         }
 732
 733         if (bo->tbo.mem.mem_type != TTM_PL_VRAM) {
 734                 if (!has_moved)
 735                         return 0;
 736
 737                 if (bo->surface_reg >= 0)
 738                         radeon_bo_clear_surface_reg(bo);
 739                 return 0;
 740         }
 741
 742         if ((bo->surface_reg >= 0) && !has_moved)
 743                 return 0;
 744
 745         return radeon_bo_get_surface_reg(bo);
 746 }
 747
 748 void radeon_bo_move_notify(struct ttm_buffer_object *bo,
 749                            struct ttm_mem_reg *new_mem)
 750 {
 751         struct radeon_bo *rbo;
 752
 753         if (!radeon_ttm_bo_is_radeon_bo(bo))
 754                 return;
 755
 756         rbo = container_of(bo, struct radeon_bo, tbo);
 757         radeon_bo_check_tiling(rbo, 0, 1);
 758         radeon_vm_bo_invalidate(rbo->rdev, rbo);
 759
 760         /* update statistics */
 761         if (!new_mem)
 762                 return;
 763
 764         radeon_update_memory_usage(rbo, bo->mem.mem_type, -1);
 765         radeon_update_memory_usage(rbo, new_mem->mem_type, 1);
 766 }
 767
 768 int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 769 {
 770         struct radeon_device *rdev;
 771         struct radeon_bo *rbo;
 772         unsigned long offset, size, lpfn;
 773         int i, r;
 774
 775         if (!radeon_ttm_bo_is_radeon_bo(bo))
 776                 return 0;
 777         rbo = container_of(bo, struct radeon_bo, tbo);
 778         radeon_bo_check_tiling(rbo, 0, 0);
 779         rdev = rbo->rdev;
 780         if (bo->mem.mem_type != TTM_PL_VRAM)
 781                 return 0;
 782
 783         size = bo->mem.num_pages << PAGE_SHIFT;
 784         offset = bo->mem.start << PAGE_SHIFT;
 785         if ((offset + size) <= rdev->mc.visible_vram_size)
 786                 return 0;
 787
 788         /* hurrah the memory is not visible ! */
 789         radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM);
 790         lpfn =  rdev->mc.visible_vram_size >> PAGE_SHIFT;
 791         for (i = 0; i < rbo->placement.num_placement; i++) {
 792                 /* Force into visible VRAM */
 793                 if ((rbo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 794                     (!rbo->placements[i].lpfn || rbo->placements[i].lpfn > lpfn))
 795                         rbo->placements[i].lpfn = lpfn;
 796         }
 797         r = ttm_bo_validate(bo, &rbo->placement, false, false);
 798         if (unlikely(r == -ENOMEM)) {
 799                 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);
 800                 return ttm_bo_validate(bo, &rbo->placement, false, false);
 801         } else if (unlikely(r != 0)) {
 802                 return r;
 803         }
 804
 805         offset = bo->mem.start << PAGE_SHIFT;
 806         /* this should never happen */
 807         if ((offset + size) > rdev->mc.visible_vram_size)
 808                 return -EINVAL;
 809
 810         return 0;
 811 }
 812
 813 int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, bool no_wait)
 814 {
 815         int r;
 816
 817         r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, NULL);
 818         if (unlikely(r != 0))
 819                 return r;
 820         if (mem_type)
 821                 *mem_type = bo->tbo.mem.mem_type;
 822
 823         r = ttm_bo_wait(&bo->tbo, true, true, no_wait);
 824         ttm_bo_unreserve(&bo->tbo);
 825         return r;
 826 }
 827
 828 /**
 829  * radeon_bo_fence - add fence to buffer object
 830  *
 831  * @bo: buffer object in question
 832  * @fence: fence to add
 833  * @shared: true if fence should be added shared
 834  *
 835  */
 836 void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
 837                      bool shared)
 838 {
 839         struct reservation_object *resv = bo->tbo.resv;
 840
 841         if (shared)
 842                 reservation_object_add_shared_fence(resv, &fence->base);
 843         else
 844                 reservation_object_add_excl_fence(resv, &fence->base);
 845 }