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(!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         radeon_ttm_placement_from_domain(bo, domain);
 356         for (i = 0; i < bo->placement.num_placement; i++) {
 357                 /* force to pin into visible video ram */
 358                 if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 359                     !(bo->flags & RADEON_GEM_NO_CPU_ACCESS) &&
 360                     (!max_offset || max_offset > bo->rdev->mc.visible_vram_size))
 361                         bo->placements[i].lpfn =
 362                                 bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
 363                 else
 364                         bo->placements[i].lpfn = max_offset >> PAGE_SHIFT;
 365
 366                 bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
 367         }
 368
 369         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 370         if (likely(r == 0)) {
 371                 bo->pin_count = 1;
 372                 if (gpu_addr != NULL)
 373                         *gpu_addr = radeon_bo_gpu_offset(bo);
 374                 if (domain == RADEON_GEM_DOMAIN_VRAM)
 375                         bo->rdev->vram_pin_size += radeon_bo_size(bo);
 376                 else
 377                         bo->rdev->gart_pin_size += radeon_bo_size(bo);
 378         } else {
 379                 dev_err(bo->rdev->dev, "%p pin failed\n", bo);
 380         }
 381         return r;
 382 }
 383
 384 int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr)
 385 {
 386         return radeon_bo_pin_restricted(bo, domain, 0, gpu_addr);
 387 }
 388
 389 int radeon_bo_unpin(struct radeon_bo *bo)
 390 {
 391         int r, i;
 392
 393         if (!bo->pin_count) {
 394                 dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo);
 395                 return 0;
 396         }
 397         bo->pin_count--;
 398         if (bo->pin_count)
 399                 return 0;
 400         for (i = 0; i < bo->placement.num_placement; i++) {
 401                 bo->placements[i].lpfn = 0;
 402                 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
 403         }
 404         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 405         if (likely(r == 0)) {
 406                 if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
 407                         bo->rdev->vram_pin_size -= radeon_bo_size(bo);
 408                 else
 409                         bo->rdev->gart_pin_size -= radeon_bo_size(bo);
 410         } else {
 411                 dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo);
 412         }
 413         return r;
 414 }
 415
 416 int radeon_bo_evict_vram(struct radeon_device *rdev)
 417 {
 418         /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
 419         if (0 && (rdev->flags & RADEON_IS_IGP)) {
 420                 if (rdev->mc.igp_sideport_enabled == false)
 421                         /* Useless to evict on IGP chips */
 422                         return 0;
 423         }
 424         return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM);
 425 }
 426
 427 void radeon_bo_force_delete(struct radeon_device *rdev)
 428 {
 429         struct radeon_bo *bo, *n;
 430
 431         if (list_empty(&rdev->gem.objects)) {
 432                 return;
 433         }
 434         dev_err(rdev->dev, "Userspace still has active objects !\n");
 435         list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
 436                 dev_err(rdev->dev, "%p %p %lu %lu force free\n",
 437                         &bo->gem_base, bo, (unsigned long)bo->gem_base.size,
 438                         *((unsigned long *)&bo->gem_base.refcount));
 439                 mutex_lock(&bo->rdev->gem.mutex);
 440                 list_del_init(&bo->list);
 441                 mutex_unlock(&bo->rdev->gem.mutex);
 442                 /* this should unref the ttm bo */
 443                 drm_gem_object_unreference_unlocked(&bo->gem_base);
 444         }
 445 }
 446
 447 int radeon_bo_init(struct radeon_device *rdev)
 448 {
 449         /* Add an MTRR for the VRAM */
 450         if (!rdev->fastfb_working) {
 451                 rdev->mc.vram_mtrr = arch_phys_wc_add(rdev->mc.aper_base,
 452                                                       rdev->mc.aper_size);
 453         }
 454         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 455                 rdev->mc.mc_vram_size >> 20,
 456                 (unsigned long long)rdev->mc.aper_size >> 20);
 457         DRM_INFO("RAM width %dbits %cDR\n",
 458                         rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S');
 459         return radeon_ttm_init(rdev);
 460 }
 461
 462 void radeon_bo_fini(struct radeon_device *rdev)
 463 {
 464         radeon_ttm_fini(rdev);
 465         arch_phys_wc_del(rdev->mc.vram_mtrr);
 466 }
 467
 468 /* Returns how many bytes TTM can move per IB.
 469  */
 470 static u64 radeon_bo_get_threshold_for_moves(struct radeon_device *rdev)
 471 {
 472         u64 real_vram_size = rdev->mc.real_vram_size;
 473         u64 vram_usage = atomic64_read(&rdev->vram_usage);
 474
 475         /* This function is based on the current VRAM usage.
 476          *
 477          * - If all of VRAM is free, allow relocating the number of bytes that
 478          *   is equal to 1/4 of the size of VRAM for this IB.
 479
 480          * - If more than one half of VRAM is occupied, only allow relocating
 481          *   1 MB of data for this IB.
 482          *
 483          * - From 0 to one half of used VRAM, the threshold decreases
 484          *   linearly.
 485          *         __________________
 486          * 1/4 of -|\               |
 487          * VRAM    | \              |
 488          *         |  \             |
 489          *         |   \            |
 490          *         |    \           |
 491          *         |     \          |
 492          *         |      \         |
 493          *         |       \________|1 MB
 494          *         |----------------|
 495          *    VRAM 0 %             100 %
 496          *         used            used
 497          *
 498          * Note: It's a threshold, not a limit. The threshold must be crossed
 499          * for buffer relocations to stop, so any buffer of an arbitrary size
 500          * can be moved as long as the threshold isn't crossed before
 501          * the relocation takes place. We don't want to disable buffer
 502          * relocations completely.
 503          *
 504          * The idea is that buffers should be placed in VRAM at creation time
 505          * and TTM should only do a minimum number of relocations during
 506          * command submission. In practice, you need to submit at least
 507          * a dozen IBs to move all buffers to VRAM if they are in GTT.
 508          *
 509          * Also, things can get pretty crazy under memory pressure and actual
 510          * VRAM usage can change a lot, so playing safe even at 50% does
 511          * consistently increase performance.
 512          */
 513
 514         u64 half_vram = real_vram_size >> 1;
 515         u64 half_free_vram = vram_usage >= half_vram ? 0 : half_vram - vram_usage;
 516         u64 bytes_moved_threshold = half_free_vram >> 1;
 517         return max(bytes_moved_threshold, 1024*1024ull);
 518 }
 519
 520 int radeon_bo_list_validate(struct radeon_device *rdev,
 521                             struct ww_acquire_ctx *ticket,
 522                             struct list_head *head, int ring)
 523 {
 524         struct radeon_bo_list *lobj;
 525         struct list_head duplicates;
 526         int r;
 527         u64 bytes_moved = 0, initial_bytes_moved;
 528         u64 bytes_moved_threshold = radeon_bo_get_threshold_for_moves(rdev);
 529
 530         INIT_LIST_HEAD(&duplicates);
 531         r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates);
 532         if (unlikely(r != 0)) {
 533                 return r;
 534         }
 535
 536         list_for_each_entry(lobj, head, tv.head) {
 537                 struct radeon_bo *bo = lobj->robj;
 538                 if (!bo->pin_count) {
 539                         u32 domain = lobj->prefered_domains;
 540                         u32 allowed = lobj->allowed_domains;
 541                         u32 current_domain =
 542                                 radeon_mem_type_to_domain(bo->tbo.mem.mem_type);
 543
 544                         /* Check if this buffer will be moved and don't move it
 545                          * if we have moved too many buffers for this IB already.
 546                          *
 547                          * Note that this allows moving at least one buffer of
 548                          * any size, because it doesn't take the current "bo"
 549                          * into account. We don't want to disallow buffer moves
 550                          * completely.
 551                          */
 552                         if ((allowed & current_domain) != 0 &&
 553                             (domain & current_domain) == 0 && /* will be moved */
 554                             bytes_moved > bytes_moved_threshold) {
 555                                 /* don't move it */
 556                                 domain = current_domain;
 557                         }
 558
 559                 retry:
 560                         radeon_ttm_placement_from_domain(bo, domain);
 561                         if (ring == R600_RING_TYPE_UVD_INDEX)
 562                                 radeon_uvd_force_into_uvd_segment(bo, allowed);
 563
 564                         initial_bytes_moved = atomic64_read(&rdev->num_bytes_moved);
 565                         r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
 566                         bytes_moved += atomic64_read(&rdev->num_bytes_moved) -
 567                                        initial_bytes_moved;
 568
 569                         if (unlikely(r)) {
 570                                 if (r != -ERESTARTSYS &&
 571                                     domain != lobj->allowed_domains) {
 572                                         domain = lobj->allowed_domains;
 573                                         goto retry;
 574                                 }
 575                                 ttm_eu_backoff_reservation(ticket, head);
 576                                 return r;
 577                         }
 578                 }
 579                 lobj->gpu_offset = radeon_bo_gpu_offset(bo);
 580                 lobj->tiling_flags = bo->tiling_flags;
 581         }
 582
 583         list_for_each_entry(lobj, &duplicates, tv.head) {
 584                 lobj->gpu_offset = radeon_bo_gpu_offset(lobj->robj);
 585                 lobj->tiling_flags = lobj->robj->tiling_flags;
 586         }
 587
 588         return 0;
 589 }
 590
 591 int radeon_bo_get_surface_reg(struct radeon_bo *bo)
 592 {
 593         struct radeon_device *rdev = bo->rdev;
 594         struct radeon_surface_reg *reg;
 595         struct radeon_bo *old_object;
 596         int steal;
 597         int i;
 598
 599         lockdep_assert_held(&bo->tbo.resv->lock.base);
 600
 601         if (!bo->tiling_flags)
 602                 return 0;
 603
 604         if (bo->surface_reg >= 0) {
 605                 reg = &rdev->surface_regs[bo->surface_reg];
 606                 i = bo->surface_reg;
 607                 goto out;
 608         }
 609
 610         steal = -1;
 611         for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
 612
 613                 reg = &rdev->surface_regs[i];
 614                 if (!reg->bo)
 615                         break;
 616
 617                 old_object = reg->bo;
 618                 if (old_object->pin_count == 0)
 619                         steal = i;
 620         }
 621
 622         /* if we are all out */
 623         if (i == RADEON_GEM_MAX_SURFACES) {
 624                 if (steal == -1)
 625                         return -ENOMEM;
 626                 /* find someone with a surface reg and nuke their BO */
 627                 reg = &rdev->surface_regs[steal];
 628                 old_object = reg->bo;
 629                 /* blow away the mapping */
 630                 DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object);
 631                 ttm_bo_unmap_virtual(&old_object->tbo);
 632                 old_object->surface_reg = -1;
 633                 i = steal;
 634         }
 635
 636         bo->surface_reg = i;
 637         reg->bo = bo;
 638
 639 out:
 640         radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch,
 641                                bo->tbo.mem.start << PAGE_SHIFT,
 642                                bo->tbo.num_pages << PAGE_SHIFT);
 643         return 0;
 644 }
 645
 646 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo)
 647 {
 648         struct radeon_device *rdev = bo->rdev;
 649         struct radeon_surface_reg *reg;
 650
 651         if (bo->surface_reg == -1)
 652                 return;
 653
 654         reg = &rdev->surface_regs[bo->surface_reg];
 655         radeon_clear_surface_reg(rdev, bo->surface_reg);
 656
 657         reg->bo = NULL;
 658         bo->surface_reg = -1;
 659 }
 660
 661 int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
 662                                 uint32_t tiling_flags, uint32_t pitch)
 663 {
 664         struct radeon_device *rdev = bo->rdev;
 665         int r;
 666
 667         if (rdev->family >= CHIP_CEDAR) {
 668                 unsigned bankw, bankh, mtaspect, tilesplit, stilesplit;
 669
 670                 bankw = (tiling_flags >> RADEON_TILING_EG_BANKW_SHIFT) & RADEON_TILING_EG_BANKW_MASK;
 671                 bankh = (tiling_flags >> RADEON_TILING_EG_BANKH_SHIFT) & RADEON_TILING_EG_BANKH_MASK;
 672                 mtaspect = (tiling_flags >> RADEON_TILING_EG_MACRO_TILE_ASPECT_SHIFT) & RADEON_TILING_EG_MACRO_TILE_ASPECT_MASK;
 673                 tilesplit = (tiling_flags >> RADEON_TILING_EG_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_TILE_SPLIT_MASK;
 674                 stilesplit = (tiling_flags >> RADEON_TILING_EG_STENCIL_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_STENCIL_TILE_SPLIT_MASK;
 675                 switch (bankw) {
 676                 case 0:
 677                 case 1:
 678                 case 2:
 679                 case 4:
 680                 case 8:
 681                         break;
 682                 default:
 683                         return -EINVAL;
 684                 }
 685                 switch (bankh) {
 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 (mtaspect) {
 696                 case 0:
 697                 case 1:
 698                 case 2:
 699                 case 4:
 700                 case 8:
 701                         break;
 702                 default:
 703                         return -EINVAL;
 704                 }
 705                 if (tilesplit > 6) {
 706                         return -EINVAL;
 707                 }
 708                 if (stilesplit > 6) {
 709                         return -EINVAL;
 710                 }
 711         }
 712         r = radeon_bo_reserve(bo, false);
 713         if (unlikely(r != 0))
 714                 return r;
 715         bo->tiling_flags = tiling_flags;
 716         bo->pitch = pitch;
 717         radeon_bo_unreserve(bo);
 718         return 0;
 719 }
 720
 721 void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
 722                                 uint32_t *tiling_flags,
 723                                 uint32_t *pitch)
 724 {
 725         lockdep_assert_held(&bo->tbo.resv->lock.base);
 726
 727         if (tiling_flags)
 728                 *tiling_flags = bo->tiling_flags;
 729         if (pitch)
 730                 *pitch = bo->pitch;
 731 }
 732
 733 int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 734                                 bool force_drop)
 735 {
 736         if (!force_drop)
 737                 lockdep_assert_held(&bo->tbo.resv->lock.base);
 738
 739         if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
 740                 return 0;
 741
 742         if (force_drop) {
 743                 radeon_bo_clear_surface_reg(bo);
 744                 return 0;
 745         }
 746
 747         if (bo->tbo.mem.mem_type != TTM_PL_VRAM) {
 748                 if (!has_moved)
 749                         return 0;
 750
 751                 if (bo->surface_reg >= 0)
 752                         radeon_bo_clear_surface_reg(bo);
 753                 return 0;
 754         }
 755
 756         if ((bo->surface_reg >= 0) && !has_moved)
 757                 return 0;
 758
 759         return radeon_bo_get_surface_reg(bo);
 760 }
 761
 762 void radeon_bo_move_notify(struct ttm_buffer_object *bo,
 763                            struct ttm_mem_reg *new_mem)
 764 {
 765         struct radeon_bo *rbo;
 766
 767         if (!radeon_ttm_bo_is_radeon_bo(bo))
 768                 return;
 769
 770         rbo = container_of(bo, struct radeon_bo, tbo);
 771         radeon_bo_check_tiling(rbo, 0, 1);
 772         radeon_vm_bo_invalidate(rbo->rdev, rbo);
 773
 774         /* update statistics */
 775         if (!new_mem)
 776                 return;
 777
 778         radeon_update_memory_usage(rbo, bo->mem.mem_type, -1);
 779         radeon_update_memory_usage(rbo, new_mem->mem_type, 1);
 780 }
 781
 782 int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 783 {
 784         struct radeon_device *rdev;
 785         struct radeon_bo *rbo;
 786         unsigned long offset, size, lpfn;
 787         int i, r;
 788
 789         if (!radeon_ttm_bo_is_radeon_bo(bo))
 790                 return 0;
 791         rbo = container_of(bo, struct radeon_bo, tbo);
 792         radeon_bo_check_tiling(rbo, 0, 0);
 793         rdev = rbo->rdev;
 794         if (bo->mem.mem_type != TTM_PL_VRAM)
 795                 return 0;
 796
 797         size = bo->mem.num_pages << PAGE_SHIFT;
 798         offset = bo->mem.start << PAGE_SHIFT;
 799         if ((offset + size) <= rdev->mc.visible_vram_size)
 800                 return 0;
 801
 802         /* Can't move a pinned BO to visible VRAM */
 803         if (rbo->pin_count > 0)
 804                 return -EINVAL;
 805
 806         /* hurrah the memory is not visible ! */
 807         radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM);
 808         lpfn =  rdev->mc.visible_vram_size >> PAGE_SHIFT;
 809         for (i = 0; i < rbo->placement.num_placement; i++) {
 810                 /* Force into visible VRAM */
 811                 if ((rbo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
 812                     (!rbo->placements[i].lpfn || rbo->placements[i].lpfn > lpfn))
 813                         rbo->placements[i].lpfn = lpfn;
 814         }
 815         r = ttm_bo_validate(bo, &rbo->placement, false, false);
 816         if (unlikely(r == -ENOMEM)) {
 817                 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);
 818                 return ttm_bo_validate(bo, &rbo->placement, false, false);
 819         } else if (unlikely(r != 0)) {
 820                 return r;
 821         }
 822
 823         offset = bo->mem.start << PAGE_SHIFT;
 824         /* this should never happen */
 825         if ((offset + size) > rdev->mc.visible_vram_size)
 826                 return -EINVAL;
 827
 828         return 0;
 829 }
 830
 831 int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, bool no_wait)
 832 {
 833         int r;
 834
 835         r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
 836         if (unlikely(r != 0))
 837                 return r;
 838         if (mem_type)
 839                 *mem_type = bo->tbo.mem.mem_type;
 840
 841         r = ttm_bo_wait(&bo->tbo, true, no_wait);
 842         ttm_bo_unreserve(&bo->tbo);
 843         return r;
 844 }
 845
 846 /**
 847  * radeon_bo_fence - add fence to buffer object
 848  *
 849  * @bo: buffer object in question
 850  * @fence: fence to add
 851  * @shared: true if fence should be added shared
 852  *
 853  */
 854 void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
 855                      bool shared)
 856 {
 857         struct reservation_object *resv = bo->tbo.resv;
 858
 859         if (shared)
 860                 reservation_object_add_shared_fence(resv, &fence->base);
 861         else
 862                 reservation_object_add_excl_fence(resv, &fence->base);
 863 }