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 <glisse@freedesktop.org>
  29  *    Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
  30  *    Dave Airlie
  31  */
  32 #include <linux/list.h>
  33 #include <linux/slab.h>
  34 #include <drm/drmP.h>
  35 #include <drm/radeon_drm.h>
  36 #include <drm/drm_cache.h>
  37 #include "radeon.h"
  38 #include "radeon_trace.h"
  39
  40
  41 int radeon_ttm_init(struct radeon_device *rdev);
  42 void radeon_ttm_fini(struct radeon_device *rdev);
  43 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo);
  44
  45 /*
  46  * To exclude mutual BO access we rely on bo_reserve exclusion, as all
  47  * function are calling it.
  48  */
  49
  50 static void radeon_update_memory_usage(struct radeon_bo *bo,
  51                                        unsigned mem_type, int sign)
  52 {
  53         struct radeon_device *rdev = bo->rdev;
  54         u64 size = (u64)bo->tbo.num_pages << PAGE_SHIFT;
  55
  56         switch (mem_type) {
  57         case TTM_PL_TT:
  58                 if (sign > 0)
  59                         atomic64_add(size, &rdev->gtt_usage);
  60                 else
  61                         atomic64_sub(size, &rdev->gtt_usage);
  62                 break;
  63         case TTM_PL_VRAM:
  64                 if (sign > 0)
  65                         atomic64_add(size, &rdev->vram_usage);
  66                 else
  67                         atomic64_sub(size, &rdev->vram_usage);
  68                 break;
  69         }
  70 }
  71
  72 static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
  73 {
  74         struct radeon_bo *bo;
  75
  76         bo = container_of(tbo, struct radeon_bo, tbo);
  77
  78         radeon_update_memory_usage(bo, bo->tbo.mem.mem_type, -1);
  79
  80         mutex_lock(&bo->rdev->gem.mutex);
  81         list_del_init(&bo->list);
  82         mutex_unlock(&bo->rdev->gem.mutex);
  83         radeon_bo_clear_surface_reg(bo);
  84         WARN_ON_ONCE(!list_empty(&bo->va));
  85         drm_gem_object_release(&bo->gem_base);
  86         kfree(bo);
  87 }
  88
  89 bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo)
  90 {
  91         if (bo->destroy == &radeon_ttm_bo_destroy)
  92                 return true;
  93         return false;
  94 }
  95
  96 void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
  97 {
  98         u32 c = 0, i;
  99
 100         rbo->placement.placement = rbo->placements;
 101         rbo->placement.busy_placement = rbo->placements;
 102         if (domain & RADEON_GEM_DOMAIN_VRAM) {
 103                 /* Try placing BOs which don't need CPU access outside of the
 104                  * CPU accessible part of VRAM
 105                  */
 106                 if ((rbo->flags & RADEON_GEM_NO_CPU_ACCESS) &&
 107                     rbo->rdev->mc.visible_vram_size < rbo->rdev->mc.real_vram_size) {
 108                         rbo->placements[c].fpfn =
 109                                 rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
 110                         rbo->placements[c++].flags = TTM_PL_FLAG_WC |
 111                                                      TTM_PL_FLAG_UNCACHED |
 112                                                      TTM_PL_FLAG_VRAM;
 113                 }
 114
 115                 rbo->placements[c].fpfn = 0;
 116                 rbo->placements[c++].flags = TTM_PL_FLAG_WC |
 117                                              TTM_PL_FLAG_UNCACHED |
 118                                              TTM_PL_FLAG_VRAM;
 119         }
 120
 121         if (domain & RADEON_GEM_DOMAIN_GTT) {
 122                 if (rbo->flags & RADEON_GEM_GTT_UC) {
 123                         rbo->placements[c].fpfn = 0;
 124                         rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED |
 125                                 TTM_PL_FLAG_TT;
 126
 127                 } else if ((rbo->flags & RADEON_GEM_GTT_WC) ||
 128                            (rbo->rdev->flags & RADEON_IS_AGP)) {
 129                         rbo->placements[c].fpfn = 0;
 130                         rbo->placements[c++].flags = TTM_PL_FLAG_WC |
 131                                 TTM_PL_FLAG_UNCACHED |
 132                                 TTM_PL_FLAG_TT;
 133                 } else {
 134                         rbo->placements[c].fpfn = 0;
 135                         rbo->placements[c++].flags = TTM_PL_FLAG_CACHED |
 136                                                      TTM_PL_FLAG_TT;
 137                 }
 138         }
 139
 140         if (domain & RADEON_GEM_DOMAIN_CPU) {
 141                 if (rbo->flags & RADEON_GEM_GTT_UC) {
 142                         rbo->placements[c].fpfn = 0;
 143                         rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED |
 144                                 TTM_PL_FLAG_SYSTEM;
 145
 146                 } else if ((rbo->flags & RADEON_GEM_GTT_WC) ||
 147                     rbo->rdev->flags & RADEON_IS_AGP) {
 148                         rbo->placements[c].fpfn = 0;
 149                         rbo->placements[c++].flags = TTM_PL_FLAG_WC |
 150                                 TTM_PL_FLAG_UNCACHED |
 151                                 TTM_PL_FLAG_SYSTEM;
 152                 } else {
 153                         rbo->placements[c].fpfn = 0;
 154                         rbo->placements[c++].flags = TTM_PL_FLAG_CACHED |
 155                                                      TTM_PL_FLAG_SYSTEM;
 156                 }
 157         }
 158         if (!c) {
 159                 rbo->placements[c].fpfn = 0;
 160                 rbo->placements[c++].flags = TTM_PL_MASK_CACHING |
 161                                              TTM_PL_FLAG_SYSTEM;
 162         }
 163
 164         rbo->placement.num_placement = c;
 165         rbo->placement.num_busy_placement = c;
 166
 167         for (i = 0; i < c; ++i) {
 168                 if ((rbo->flags & RADEON_GEM_CPU_ACCESS) &&
 169                     (rbo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 170                     !rbo->placements[i].fpfn)
 171                         rbo->placements[i].lpfn =
 172                                 rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
 173                 else
 174                         rbo->placements[i].lpfn = 0;
 175         }
 176 }
 177
 178 int radeon_bo_create(struct radeon_device *rdev,
 179                      unsigned long size, int byte_align, bool kernel,
 180                      u32 domain, u32 flags, struct sg_table *sg,
 181                      struct reservation_object *resv,
 182                      struct radeon_bo **bo_ptr)
 183 {
 184         struct radeon_bo *bo;
 185         enum ttm_bo_type type;
 186         unsigned long page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
 187         size_t acc_size;
 188         int r;
 189
 190         size = ALIGN(size, PAGE_SIZE);
 191
 192         if (kernel) {
 193                 type = ttm_bo_type_kernel;
 194         } else if (sg) {
 195                 type = ttm_bo_type_sg;
 196         } else {
 197                 type = ttm_bo_type_device;
 198         }
 199         *bo_ptr = NULL;
 200
 201         acc_size = ttm_bo_dma_acc_size(&rdev->mman.bdev, size,
 202                                        sizeof(struct radeon_bo));
 203
 204         bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL);
 205         if (bo == NULL)
 206                 return -ENOMEM;
 207         r = drm_gem_object_init(rdev->ddev, &bo->gem_base, size);
 208         if (unlikely(r)) {
 209                 kfree(bo);
 210                 return r;
 211         }
 212         bo->rdev = rdev;
 213         bo->surface_reg = -1;
 214         INIT_LIST_HEAD(&bo->list);
 215         INIT_LIST_HEAD(&bo->va);
 216         bo->initial_domain = domain & (RADEON_GEM_DOMAIN_VRAM |
 217                                        RADEON_GEM_DOMAIN_GTT |
 218                                        RADEON_GEM_DOMAIN_CPU);
 219
 220         bo->flags = flags;
 221         /* PCI GART is always snooped */
 222         if (!(rdev->flags & RADEON_IS_PCIE))
 223                 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
 224
 225         /* Write-combined CPU mappings of GTT cause GPU hangs with RV6xx
 226          * See https://bugs.freedesktop.org/show_bug.cgi?id=91268
 227          */
 228         if (rdev->family >= CHIP_RV610 && rdev->family <= CHIP_RV635)
 229                 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
 230
 231 #ifdef CONFIG_X86_32
 232         /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
 233          * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
 234          */
 235         bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
 236 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
 237         /* Don't try to enable write-combining when it can't work, or things
 238          * may be slow
 239          * See https://bugs.freedesktop.org/show_bug.cgi?id=88758
 240          */
 241
 242 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
 243          thanks to write-combining
 244
 245         if (bo->flags & RADEON_GEM_GTT_WC)
 246                 DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
 247                               "better performance thanks to write-combining\n");
 248         bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
 249 #else
 250         /* For architectures that don't support WC memory,
 251          * mask out the WC flag from the BO
 252          */
 253         if (!drm_arch_can_wc_memory())
 254                 bo->flags &= ~RADEON_GEM_GTT_WC;
 255 #endif
 256
 257         radeon_ttm_placement_from_domain(bo, domain);
 258         /* Kernel allocation are uninterruptible */
 259         down_read(&rdev->pm.mclk_lock);
 260         r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
 261                         &bo->placement, page_align, !kernel, NULL,
 262                         acc_size, sg, resv, &radeon_ttm_bo_destroy);
 263         up_read(&rdev->pm.mclk_lock);
 264         if (unlikely(r != 0)) {
 265                 return r;
 266         }
 267         *bo_ptr = bo;
 268
 269         trace_radeon_bo_create(bo);
 270
 271         return 0;
 272 }
 273
 274 int radeon_bo_kmap(struct radeon_bo *bo, void **ptr)
 275 {
 276         bool is_iomem;
 277         int r;
 278
 279         if (bo->kptr) {
 280                 if (ptr) {
 281                         *ptr = bo->kptr;
 282                 }
 283                 return 0;
 284         }
 285         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 286         if (r) {
 287                 return r;
 288         }
 289         bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 290         if (ptr) {
 291                 *ptr = bo->kptr;
 292         }
 293         radeon_bo_check_tiling(bo, 0, 0);
 294         return 0;
 295 }
 296
 297 void radeon_bo_kunmap(struct radeon_bo *bo)
 298 {
 299         if (bo->kptr == NULL)
 300                 return;
 301         bo->kptr = NULL;
 302         radeon_bo_check_tiling(bo, 0, 0);
 303         ttm_bo_kunmap(&bo->kmap);
 304 }
 305
 306 struct radeon_bo *radeon_bo_ref(struct radeon_bo *bo)
 307 {
 308         if (bo == NULL)
 309                 return NULL;
 310
 311         ttm_bo_reference(&bo->tbo);
 312         return bo;
 313 }
 314
 315 void radeon_bo_unref(struct radeon_bo **bo)
 316 {
 317         struct ttm_buffer_object *tbo;
 318         struct radeon_device *rdev;
 319
 320         if ((*bo) == NULL)
 321                 return;
 322         rdev = (*bo)->rdev;
 323         tbo = &((*bo)->tbo);
 324         ttm_bo_unref(&tbo);
 325         if (tbo == NULL)
 326                 *bo = NULL;
 327 }
 328
 329 int radeon_bo_pin_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset,
 330                              u64 *gpu_addr)
 331 {
 332         int r, i;
 333
 334         if (radeon_ttm_tt_has_userptr(bo->tbo.ttm))
 335                 return -EPERM;
 336
 337         if (bo->pin_count) {
 338                 bo->pin_count++;
 339                 if (gpu_addr)
 340                         *gpu_addr = radeon_bo_gpu_offset(bo);
 341
 342                 if (max_offset != 0) {
 343                         u64 domain_start;
 344
 345                         if (domain == RADEON_GEM_DOMAIN_VRAM)
 346                                 domain_start = bo->rdev->mc.vram_start;
 347                         else
 348                                 domain_start = bo->rdev->mc.gtt_start;
 349                         WARN_ON_ONCE(max_offset <
 350                                      (radeon_bo_gpu_offset(bo) - domain_start));
 351                 }
 352
 353                 return 0;
 354         }
 355         if (bo->prime_shared_count && domain == RADEON_GEM_DOMAIN_VRAM) {
 356                 /* A BO shared as a dma-buf cannot be sensibly migrated to VRAM */
 357                 return -EINVAL;
 358         }
 359
 360         radeon_ttm_placement_from_domain(bo, domain);
 361         for (i = 0; i < bo->placement.num_placement; i++) {
 362                 /* force to pin into visible video ram */
 363                 if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 364                     !(bo->flags & RADEON_GEM_NO_CPU_ACCESS) &&
 365                     (!max_offset || max_offset > bo->rdev->mc.visible_vram_size))
 366                         bo->placements[i].lpfn =
 367                                 bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
 368                 else
 369                         bo->placements[i].lpfn = max_offset >> PAGE_SHIFT;
 370
 371                 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
 372         }
 373
 374         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 375         if (likely(r == 0)) {
 376                 bo->pin_count = 1;
 377                 if (gpu_addr != NULL)
 378                         *gpu_addr = radeon_bo_gpu_offset(bo);
 379                 if (domain == RADEON_GEM_DOMAIN_VRAM)
 380                         bo->rdev->vram_pin_size += radeon_bo_size(bo);
 381                 else
 382                         bo->rdev->gart_pin_size += radeon_bo_size(bo);
 383         } else {
 384                 dev_err(bo->rdev->dev, "%p pin failed\n", bo);
 385         }
 386         return r;
 387 }
 388
 389 int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr)
 390 {
 391         return radeon_bo_pin_restricted(bo, domain, 0, gpu_addr);
 392 }
 393
 394 int radeon_bo_unpin(struct radeon_bo *bo)
 395 {
 396         int r, i;
 397
 398         if (!bo->pin_count) {
 399                 dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo);
 400                 return 0;
 401         }
 402         bo->pin_count--;
 403         if (bo->pin_count)
 404                 return 0;
 405         for (i = 0; i < bo->placement.num_placement; i++) {
 406                 bo->placements[i].lpfn = 0;
 407                 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
 408         }
 409         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 410         if (likely(r == 0)) {
 411                 if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
 412                         bo->rdev->vram_pin_size -= radeon_bo_size(bo);
 413                 else
 414                         bo->rdev->gart_pin_size -= radeon_bo_size(bo);
 415         } else {
 416                 dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo);
 417         }
 418         return r;
 419 }
 420
 421 int radeon_bo_evict_vram(struct radeon_device *rdev)
 422 {
 423         /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
 424         if (0 && (rdev->flags & RADEON_IS_IGP)) {
 425                 if (rdev->mc.igp_sideport_enabled == false)
 426                         /* Useless to evict on IGP chips */
 427                         return 0;
 428         }
 429         return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM);
 430 }
 431
 432 void radeon_bo_force_delete(struct radeon_device *rdev)
 433 {
 434         struct radeon_bo *bo, *n;
 435
 436         if (list_empty(&rdev->gem.objects)) {
 437                 return;
 438         }
 439         dev_err(rdev->dev, "Userspace still has active objects !\n");
 440         list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
 441                 dev_err(rdev->dev, "%p %p %lu %lu force free\n",
 442                         &bo->gem_base, bo, (unsigned long)bo->gem_base.size,
 443                         *((unsigned long *)&bo->gem_base.refcount));
 444                 mutex_lock(&bo->rdev->gem.mutex);
 445                 list_del_init(&bo->list);
 446                 mutex_unlock(&bo->rdev->gem.mutex);
 447                 /* this should unref the ttm bo */
 448                 drm_gem_object_put_unlocked(&bo->gem_base);
 449         }
 450 }
 451
 452 int radeon_bo_init(struct radeon_device *rdev)
 453 {
 454         /* reserve PAT memory space to WC for VRAM */
 455         arch_io_reserve_memtype_wc(rdev->mc.aper_base,
 456                                    rdev->mc.aper_size);
 457
 458         /* Add an MTRR for the VRAM */
 459         if (!rdev->fastfb_working) {
 460                 rdev->mc.vram_mtrr = arch_phys_wc_add(rdev->mc.aper_base,
 461                                                       rdev->mc.aper_size);
 462         }
 463         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 464                 rdev->mc.mc_vram_size >> 20,
 465                 (unsigned long long)rdev->mc.aper_size >> 20);
 466         DRM_INFO("RAM width %dbits %cDR\n",
 467                         rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S');
 468         return radeon_ttm_init(rdev);
 469 }
 470
 471 void radeon_bo_fini(struct radeon_device *rdev)
 472 {
 473         radeon_ttm_fini(rdev);
 474         arch_phys_wc_del(rdev->mc.vram_mtrr);
 475         arch_io_free_memtype_wc(rdev->mc.aper_base, rdev->mc.aper_size);
 476 }
 477
 478 /* Returns how many bytes TTM can move per IB.
 479  */
 480 static u64 radeon_bo_get_threshold_for_moves(struct radeon_device *rdev)
 481 {
 482         u64 real_vram_size = rdev->mc.real_vram_size;
 483         u64 vram_usage = atomic64_read(&rdev->vram_usage);
 484
 485         /* This function is based on the current VRAM usage.
 486          *
 487          * - If all of VRAM is free, allow relocating the number of bytes that
 488          *   is equal to 1/4 of the size of VRAM for this IB.
 489
 490          * - If more than one half of VRAM is occupied, only allow relocating
 491          *   1 MB of data for this IB.
 492          *
 493          * - From 0 to one half of used VRAM, the threshold decreases
 494          *   linearly.
 495          *         __________________
 496          * 1/4 of -|\               |
 497          * VRAM    | \              |
 498          *         |  \             |
 499          *         |   \            |
 500          *         |    \           |
 501          *         |     \          |
 502          *         |      \         |
 503          *         |       \________|1 MB
 504          *         |----------------|
 505          *    VRAM 0 %             100 %
 506          *         used            used
 507          *
 508          * Note: It's a threshold, not a limit. The threshold must be crossed
 509          * for buffer relocations to stop, so any buffer of an arbitrary size
 510          * can be moved as long as the threshold isn't crossed before
 511          * the relocation takes place. We don't want to disable buffer
 512          * relocations completely.
 513          *
 514          * The idea is that buffers should be placed in VRAM at creation time
 515          * and TTM should only do a minimum number of relocations during
 516          * command submission. In practice, you need to submit at least
 517          * a dozen IBs to move all buffers to VRAM if they are in GTT.
 518          *
 519          * Also, things can get pretty crazy under memory pressure and actual
 520          * VRAM usage can change a lot, so playing safe even at 50% does
 521          * consistently increase performance.
 522          */
 523
 524         u64 half_vram = real_vram_size >> 1;
 525         u64 half_free_vram = vram_usage >= half_vram ? 0 : half_vram - vram_usage;
 526         u64 bytes_moved_threshold = half_free_vram >> 1;
 527         return max(bytes_moved_threshold, 1024*1024ull);
 528 }
 529
 530 int radeon_bo_list_validate(struct radeon_device *rdev,
 531                             struct ww_acquire_ctx *ticket,
 532                             struct list_head *head, int ring)
 533 {
 534         struct radeon_bo_list *lobj;
 535         struct list_head duplicates;
 536         int r;
 537         u64 bytes_moved = 0, initial_bytes_moved;
 538         u64 bytes_moved_threshold = radeon_bo_get_threshold_for_moves(rdev);
 539
 540         INIT_LIST_HEAD(&duplicates);
 541         r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates);
 542         if (unlikely(r != 0)) {
 543                 return r;
 544         }
 545
 546         list_for_each_entry(lobj, head, tv.head) {
 547                 struct radeon_bo *bo = lobj->robj;
 548                 if (!bo->pin_count) {
 549                         u32 domain = lobj->preferred_domains;
 550                         u32 allowed = lobj->allowed_domains;
 551                         u32 current_domain =
 552                                 radeon_mem_type_to_domain(bo->tbo.mem.mem_type);
 553
 554                         /* Check if this buffer will be moved and don't move it
 555                          * if we have moved too many buffers for this IB already.
 556                          *
 557                          * Note that this allows moving at least one buffer of
 558                          * any size, because it doesn't take the current "bo"
 559                          * into account. We don't want to disallow buffer moves
 560                          * completely.
 561                          */
 562                         if ((allowed & current_domain) != 0 &&
 563                             (domain & current_domain) == 0 && /* will be moved */
 564                             bytes_moved > bytes_moved_threshold) {
 565                                 /* don't move it */
 566                                 domain = current_domain;
 567                         }
 568
 569                 retry:
 570                         radeon_ttm_placement_from_domain(bo, domain);
 571                         if (ring == R600_RING_TYPE_UVD_INDEX)
 572                                 radeon_uvd_force_into_uvd_segment(bo, allowed);
 573
 574                         initial_bytes_moved = atomic64_read(&rdev->num_bytes_moved);
 575                         r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
 576                         bytes_moved += atomic64_read(&rdev->num_bytes_moved) -
 577                                        initial_bytes_moved;
 578
 579                         if (unlikely(r)) {
 580                                 if (r != -ERESTARTSYS &&
 581                                     domain != lobj->allowed_domains) {
 582                                         domain = lobj->allowed_domains;
 583                                         goto retry;
 584                                 }
 585                                 ttm_eu_backoff_reservation(ticket, head);
 586                                 return r;
 587                         }
 588                 }
 589                 lobj->gpu_offset = radeon_bo_gpu_offset(bo);
 590                 lobj->tiling_flags = bo->tiling_flags;
 591         }
 592
 593         list_for_each_entry(lobj, &duplicates, tv.head) {
 594                 lobj->gpu_offset = radeon_bo_gpu_offset(lobj->robj);
 595                 lobj->tiling_flags = lobj->robj->tiling_flags;
 596         }
 597
 598         return 0;
 599 }
 600
 601 int radeon_bo_get_surface_reg(struct radeon_bo *bo)
 602 {
 603         struct radeon_device *rdev = bo->rdev;
 604         struct radeon_surface_reg *reg;
 605         struct radeon_bo *old_object;
 606         int steal;
 607         int i;
 608
 609         lockdep_assert_held(&bo->tbo.resv->lock.base);
 610
 611         if (!bo->tiling_flags)
 612                 return 0;
 613
 614         if (bo->surface_reg >= 0) {
 615                 reg = &rdev->surface_regs[bo->surface_reg];
 616                 i = bo->surface_reg;
 617                 goto out;
 618         }
 619
 620         steal = -1;
 621         for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
 622
 623                 reg = &rdev->surface_regs[i];
 624                 if (!reg->bo)
 625                         break;
 626
 627                 old_object = reg->bo;
 628                 if (old_object->pin_count == 0)
 629                         steal = i;
 630         }
 631
 632         /* if we are all out */
 633         if (i == RADEON_GEM_MAX_SURFACES) {
 634                 if (steal == -1)
 635                         return -ENOMEM;
 636                 /* find someone with a surface reg and nuke their BO */
 637                 reg = &rdev->surface_regs[steal];
 638                 old_object = reg->bo;
 639                 /* blow away the mapping */
 640                 DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object);
 641                 ttm_bo_unmap_virtual(&old_object->tbo);
 642                 old_object->surface_reg = -1;
 643                 i = steal;
 644         }
 645
 646         bo->surface_reg = i;
 647         reg->bo = bo;
 648
 649 out:
 650         radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch,
 651                                bo->tbo.mem.start << PAGE_SHIFT,
 652                                bo->tbo.num_pages << PAGE_SHIFT);
 653         return 0;
 654 }
 655
 656 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo)
 657 {
 658         struct radeon_device *rdev = bo->rdev;
 659         struct radeon_surface_reg *reg;
 660
 661         if (bo->surface_reg == -1)
 662                 return;
 663
 664         reg = &rdev->surface_regs[bo->surface_reg];
 665         radeon_clear_surface_reg(rdev, bo->surface_reg);
 666
 667         reg->bo = NULL;
 668         bo->surface_reg = -1;
 669 }
 670
 671 int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
 672                                 uint32_t tiling_flags, uint32_t pitch)
 673 {
 674         struct radeon_device *rdev = bo->rdev;
 675         int r;
 676
 677         if (rdev->family >= CHIP_CEDAR) {
 678                 unsigned bankw, bankh, mtaspect, tilesplit, stilesplit;
 679
 680                 bankw = (tiling_flags >> RADEON_TILING_EG_BANKW_SHIFT) & RADEON_TILING_EG_BANKW_MASK;
 681                 bankh = (tiling_flags >> RADEON_TILING_EG_BANKH_SHIFT) & RADEON_TILING_EG_BANKH_MASK;
 682                 mtaspect = (tiling_flags >> RADEON_TILING_EG_MACRO_TILE_ASPECT_SHIFT) & RADEON_TILING_EG_MACRO_TILE_ASPECT_MASK;
 683                 tilesplit = (tiling_flags >> RADEON_TILING_EG_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_TILE_SPLIT_MASK;
 684                 stilesplit = (tiling_flags >> RADEON_TILING_EG_STENCIL_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_STENCIL_TILE_SPLIT_MASK;
 685                 switch (bankw) {
 686                 case 0:
 687                 case 1:
 688                 case 2:
 689                 case 4:
 690                 case 8:
 691                         break;
 692                 default:
 693                         return -EINVAL;
 694                 }
 695                 switch (bankh) {
 696                 case 0:
 697                 case 1:
 698                 case 2:
 699                 case 4:
 700                 case 8:
 701                         break;
 702                 default:
 703                         return -EINVAL;
 704                 }
 705                 switch (mtaspect) {
 706                 case 0:
 707                 case 1:
 708                 case 2:
 709                 case 4:
 710                 case 8:
 711                         break;
 712                 default:
 713                         return -EINVAL;
 714                 }
 715                 if (tilesplit > 6) {
 716                         return -EINVAL;
 717                 }
 718                 if (stilesplit > 6) {
 719                         return -EINVAL;
 720                 }
 721         }
 722         r = radeon_bo_reserve(bo, false);
 723         if (unlikely(r != 0))
 724                 return r;
 725         bo->tiling_flags = tiling_flags;
 726         bo->pitch = pitch;
 727         radeon_bo_unreserve(bo);
 728         return 0;
 729 }
 730
 731 void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
 732                                 uint32_t *tiling_flags,
 733                                 uint32_t *pitch)
 734 {
 735         lockdep_assert_held(&bo->tbo.resv->lock.base);
 736
 737         if (tiling_flags)
 738                 *tiling_flags = bo->tiling_flags;
 739         if (pitch)
 740                 *pitch = bo->pitch;
 741 }
 742
 743 int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 744                                 bool force_drop)
 745 {
 746         if (!force_drop)
 747                 lockdep_assert_held(&bo->tbo.resv->lock.base);
 748
 749         if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
 750                 return 0;
 751
 752         if (force_drop) {
 753                 radeon_bo_clear_surface_reg(bo);
 754                 return 0;
 755         }
 756
 757         if (bo->tbo.mem.mem_type != TTM_PL_VRAM) {
 758                 if (!has_moved)
 759                         return 0;
 760
 761                 if (bo->surface_reg >= 0)
 762                         radeon_bo_clear_surface_reg(bo);
 763                 return 0;
 764         }
 765
 766         if ((bo->surface_reg >= 0) && !has_moved)
 767                 return 0;
 768
 769         return radeon_bo_get_surface_reg(bo);
 770 }
 771
 772 void radeon_bo_move_notify(struct ttm_buffer_object *bo,
 773                            bool evict,
 774                            struct ttm_mem_reg *new_mem)
 775 {
 776         struct radeon_bo *rbo;
 777
 778         if (!radeon_ttm_bo_is_radeon_bo(bo))
 779                 return;
 780
 781         rbo = container_of(bo, struct radeon_bo, tbo);
 782         radeon_bo_check_tiling(rbo, 0, 1);
 783         radeon_vm_bo_invalidate(rbo->rdev, rbo);
 784
 785         /* update statistics */
 786         if (!new_mem)
 787                 return;
 788
 789         radeon_update_memory_usage(rbo, bo->mem.mem_type, -1);
 790         radeon_update_memory_usage(rbo, new_mem->mem_type, 1);
 791 }
 792
 793 int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 794 {
 795         struct radeon_device *rdev;
 796         struct radeon_bo *rbo;
 797         unsigned long offset, size, lpfn;
 798         int i, r;
 799
 800         if (!radeon_ttm_bo_is_radeon_bo(bo))
 801                 return 0;
 802         rbo = container_of(bo, struct radeon_bo, tbo);
 803         radeon_bo_check_tiling(rbo, 0, 0);
 804         rdev = rbo->rdev;
 805         if (bo->mem.mem_type != TTM_PL_VRAM)
 806                 return 0;
 807
 808         size = bo->mem.num_pages << PAGE_SHIFT;
 809         offset = bo->mem.start << PAGE_SHIFT;
 810         if ((offset + size) <= rdev->mc.visible_vram_size)
 811                 return 0;
 812
 813         /* Can't move a pinned BO to visible VRAM */
 814         if (rbo->pin_count > 0)
 815                 return -EINVAL;
 816
 817         /* hurrah the memory is not visible ! */
 818         radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM);
 819         lpfn =  rdev->mc.visible_vram_size >> PAGE_SHIFT;
 820         for (i = 0; i < rbo->placement.num_placement; i++) {
 821                 /* Force into visible VRAM */
 822                 if ((rbo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 823                     (!rbo->placements[i].lpfn || rbo->placements[i].lpfn > lpfn))
 824                         rbo->placements[i].lpfn = lpfn;
 825         }
 826         r = ttm_bo_validate(bo, &rbo->placement, false, false);
 827         if (unlikely(r == -ENOMEM)) {
 828                 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);
 829                 return ttm_bo_validate(bo, &rbo->placement, false, false);
 830         } else if (unlikely(r != 0)) {
 831                 return r;
 832         }
 833
 834         offset = bo->mem.start << PAGE_SHIFT;
 835         /* this should never happen */
 836         if ((offset + size) > rdev->mc.visible_vram_size)
 837                 return -EINVAL;
 838
 839         return 0;
 840 }
 841
 842 int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, bool no_wait)
 843 {
 844         int r;
 845
 846         r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
 847         if (unlikely(r != 0))
 848                 return r;
 849         if (mem_type)
 850                 *mem_type = bo->tbo.mem.mem_type;
 851
 852         r = ttm_bo_wait(&bo->tbo, true, no_wait);
 853         ttm_bo_unreserve(&bo->tbo);
 854         return r;
 855 }
 856
 857 /**
 858  * radeon_bo_fence - add fence to buffer object
 859  *
 860  * @bo: buffer object in question
 861  * @fence: fence to add
 862  * @shared: true if fence should be added shared
 863  *
 864  */
 865 void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
 866                      bool shared)
 867 {
 868         struct reservation_object *resv = bo->tbo.resv;
 869
 870         if (shared)
 871                 reservation_object_add_shared_fence(resv, &fence->base);
 872         else
 873                 reservation_object_add_excl_fence(resv, &fence->base);
 874 }