drivers/gpu/drm/nouveau/nouveau_bo.c

   1 /*
   2  * Copyright 2007 Dave Airlied
   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 "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24 /*
  25  * Authors: Dave Airlied <airlied@linux.ie>
  26  *          Ben Skeggs   <darktama@iinet.net.au>
  27  *          Jeremy Kolb  <jkolb@brandeis.edu>
  28  */
  29
  30 #include "drmP.h"
  31
  32 #include "nouveau_drm.h"
  33 #include "nouveau_drv.h"
  34 #include "nouveau_dma.h"
  35
  36 #include <linux/log2.h>
  37
  38 static void
  39 nouveau_bo_del_ttm(struct ttm_buffer_object *bo)
  40 {
  41         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
  42         struct drm_device *dev = dev_priv->dev;
  43         struct nouveau_bo *nvbo = nouveau_bo(bo);
  44
  45         ttm_bo_kunmap(&nvbo->kmap);
  46
  47         if (unlikely(nvbo->gem))
  48                 DRM_ERROR("bo %p still attached to GEM object\n", bo);
  49
  50         if (nvbo->tile)
  51                 nv10_mem_expire_tiling(dev, nvbo->tile, NULL);
  52
  53         spin_lock(&dev_priv->ttm.bo_list_lock);
  54         list_del(&nvbo->head);
  55         spin_unlock(&dev_priv->ttm.bo_list_lock);
  56         kfree(nvbo);
  57 }
  58
  59 static void
  60 nouveau_bo_fixup_align(struct drm_device *dev,
  61                        uint32_t tile_mode, uint32_t tile_flags,
  62                        int *align, int *size)
  63 {
  64         struct drm_nouveau_private *dev_priv = dev->dev_private;
  65
  66         /*
  67          * Some of the tile_flags have a periodic structure of N*4096 bytes,
  68          * align to to that as well as the page size. Align the size to the
  69          * appropriate boundaries. This does imply that sizes are rounded up
  70          * 3-7 pages, so be aware of this and do not waste memory by allocating
  71          * many small buffers.
  72          */
  73         if (dev_priv->card_type == NV_50) {
  74                 uint32_t block_size = nouveau_mem_fb_amount(dev) >> 15;
  75                 int i;
  76
  77                 switch (tile_flags) {
  78                 case 0x1800:
  79                 case 0x2800:
  80                 case 0x4800:
  81                 case 0x7a00:
  82                         if (is_power_of_2(block_size)) {
  83                                 for (i = 1; i < 10; i++) {
  84                                         *align = 12 * i * block_size;
  85                                         if (!(*align % 65536))
  86                                                 break;
  87                                 }
  88                         } else {
  89                                 for (i = 1; i < 10; i++) {
  90                                         *align = 8 * i * block_size;
  91                                         if (!(*align % 65536))
  92                                                 break;
  93                                 }
  94                         }
  95                         *size = roundup(*size, *align);
  96                         break;
  97                 default:
  98                         break;
  99                 }
 100
 101         } else {
 102                 if (tile_mode) {
 103                         if (dev_priv->chipset >= 0x40) {
 104                                 *align = 65536;
 105                                 *size = roundup(*size, 64 * tile_mode);
 106
 107                         } else if (dev_priv->chipset >= 0x30) {
 108                                 *align = 32768;
 109                                 *size = roundup(*size, 64 * tile_mode);
 110
 111                         } else if (dev_priv->chipset >= 0x20) {
 112                                 *align = 16384;
 113                                 *size = roundup(*size, 64 * tile_mode);
 114
 115                         } else if (dev_priv->chipset >= 0x10) {
 116                                 *align = 16384;
 117                                 *size = roundup(*size, 32 * tile_mode);
 118                         }
 119                 }
 120         }
 121
 122         /* ALIGN works only on powers of two. */
 123         *size = roundup(*size, PAGE_SIZE);
 124
 125         if (dev_priv->card_type == NV_50) {
 126                 *size = roundup(*size, 65536);
 127                 *align = max(65536, *align);
 128         }
 129 }
 130
 131 int
 132 nouveau_bo_new(struct drm_device *dev, struct nouveau_channel *chan,
 133                int size, int align, uint32_t flags, uint32_t tile_mode,
 134                uint32_t tile_flags, bool no_vm, bool mappable,
 135                struct nouveau_bo **pnvbo)
 136 {
 137         struct drm_nouveau_private *dev_priv = dev->dev_private;
 138         struct nouveau_bo *nvbo;
 139         int ret = 0;
 140
 141         nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
 142         if (!nvbo)
 143                 return -ENOMEM;
 144         INIT_LIST_HEAD(&nvbo->head);
 145         INIT_LIST_HEAD(&nvbo->entry);
 146         nvbo->mappable = mappable;
 147         nvbo->no_vm = no_vm;
 148         nvbo->tile_mode = tile_mode;
 149         nvbo->tile_flags = tile_flags;
 150
 151         nouveau_bo_fixup_align(dev, tile_mode, tile_flags, &align, &size);
 152         align >>= PAGE_SHIFT;
 153
 154         nvbo->placement.fpfn = 0;
 155         nvbo->placement.lpfn = mappable ? dev_priv->fb_mappable_pages : 0;
 156         nouveau_bo_placement_set(nvbo, flags);
 157
 158         nvbo->channel = chan;
 159         ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
 160                           ttm_bo_type_device, &nvbo->placement, align, 0,
 161                           false, NULL, size, nouveau_bo_del_ttm);
 162         nvbo->channel = NULL;
 163         if (ret) {
 164                 /* ttm will call nouveau_bo_del_ttm if it fails.. */
 165                 return ret;
 166         }
 167
 168         spin_lock(&dev_priv->ttm.bo_list_lock);
 169         list_add_tail(&nvbo->head, &dev_priv->ttm.bo_list);
 170         spin_unlock(&dev_priv->ttm.bo_list_lock);
 171         *pnvbo = nvbo;
 172         return 0;
 173 }
 174
 175 void
 176 nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t memtype)
 177 {
 178         int n = 0;
 179
 180         if (memtype & TTM_PL_FLAG_VRAM)
 181                 nvbo->placements[n++] = TTM_PL_FLAG_VRAM | TTM_PL_MASK_CACHING;
 182         if (memtype & TTM_PL_FLAG_TT)
 183                 nvbo->placements[n++] = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 184         if (memtype & TTM_PL_FLAG_SYSTEM)
 185                 nvbo->placements[n++] = TTM_PL_FLAG_SYSTEM | TTM_PL_MASK_CACHING;
 186         nvbo->placement.placement = nvbo->placements;
 187         nvbo->placement.busy_placement = nvbo->placements;
 188         nvbo->placement.num_placement = n;
 189         nvbo->placement.num_busy_placement = n;
 190
 191         if (nvbo->pin_refcnt) {
 192                 while (n--)
 193                         nvbo->placements[n] |= TTM_PL_FLAG_NO_EVICT;
 194         }
 195 }
 196
 197 int
 198 nouveau_bo_pin(struct nouveau_bo *nvbo, uint32_t memtype)
 199 {
 200         struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
 201         struct ttm_buffer_object *bo = &nvbo->bo;
 202         int ret, i;
 203
 204         if (nvbo->pin_refcnt && !(memtype & (1 << bo->mem.mem_type))) {
 205                 NV_ERROR(nouveau_bdev(bo->bdev)->dev,
 206                          "bo %p pinned elsewhere: 0x%08x vs 0x%08x\n", bo,
 207                          1 << bo->mem.mem_type, memtype);
 208                 return -EINVAL;
 209         }
 210
 211         if (nvbo->pin_refcnt++)
 212                 return 0;
 213
 214         ret = ttm_bo_reserve(bo, false, false, false, 0);
 215         if (ret)
 216                 goto out;
 217
 218         nouveau_bo_placement_set(nvbo, memtype);
 219         for (i = 0; i < nvbo->placement.num_placement; i++)
 220                 nvbo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
 221
 222         ret = ttm_bo_validate(bo, &nvbo->placement, false, false);
 223         if (ret == 0) {
 224                 switch (bo->mem.mem_type) {
 225                 case TTM_PL_VRAM:
 226                         dev_priv->fb_aper_free -= bo->mem.size;
 227                         break;
 228                 case TTM_PL_TT:
 229                         dev_priv->gart_info.aper_free -= bo->mem.size;
 230                         break;
 231                 default:
 232                         break;
 233                 }
 234         }
 235         ttm_bo_unreserve(bo);
 236 out:
 237         if (unlikely(ret))
 238                 nvbo->pin_refcnt--;
 239         return ret;
 240 }
 241
 242 int
 243 nouveau_bo_unpin(struct nouveau_bo *nvbo)
 244 {
 245         struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
 246         struct ttm_buffer_object *bo = &nvbo->bo;
 247         int ret, i;
 248
 249         if (--nvbo->pin_refcnt)
 250                 return 0;
 251
 252         ret = ttm_bo_reserve(bo, false, false, false, 0);
 253         if (ret)
 254                 return ret;
 255
 256         for (i = 0; i < nvbo->placement.num_placement; i++)
 257                 nvbo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
 258
 259         ret = ttm_bo_validate(bo, &nvbo->placement, false, false);
 260         if (ret == 0) {
 261                 switch (bo->mem.mem_type) {
 262                 case TTM_PL_VRAM:
 263                         dev_priv->fb_aper_free += bo->mem.size;
 264                         break;
 265                 case TTM_PL_TT:
 266                         dev_priv->gart_info.aper_free += bo->mem.size;
 267                         break;
 268                 default:
 269                         break;
 270                 }
 271         }
 272
 273         ttm_bo_unreserve(bo);
 274         return ret;
 275 }
 276
 277 int
 278 nouveau_bo_map(struct nouveau_bo *nvbo)
 279 {
 280         int ret;
 281
 282         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 283         if (ret)
 284                 return ret;
 285
 286         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages, &nvbo->kmap);
 287         ttm_bo_unreserve(&nvbo->bo);
 288         return ret;
 289 }
 290
 291 void
 292 nouveau_bo_unmap(struct nouveau_bo *nvbo)
 293 {
 294         ttm_bo_kunmap(&nvbo->kmap);
 295 }
 296
 297 u16
 298 nouveau_bo_rd16(struct nouveau_bo *nvbo, unsigned index)
 299 {
 300         bool is_iomem;
 301         u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 302         mem = &mem[index];
 303         if (is_iomem)
 304                 return ioread16_native((void __force __iomem *)mem);
 305         else
 306                 return *mem;
 307 }
 308
 309 void
 310 nouveau_bo_wr16(struct nouveau_bo *nvbo, unsigned index, u16 val)
 311 {
 312         bool is_iomem;
 313         u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 314         mem = &mem[index];
 315         if (is_iomem)
 316                 iowrite16_native(val, (void __force __iomem *)mem);
 317         else
 318                 *mem = val;
 319 }
 320
 321 u32
 322 nouveau_bo_rd32(struct nouveau_bo *nvbo, unsigned index)
 323 {
 324         bool is_iomem;
 325         u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 326         mem = &mem[index];
 327         if (is_iomem)
 328                 return ioread32_native((void __force __iomem *)mem);
 329         else
 330                 return *mem;
 331 }
 332
 333 void
 334 nouveau_bo_wr32(struct nouveau_bo *nvbo, unsigned index, u32 val)
 335 {
 336         bool is_iomem;
 337         u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 338         mem = &mem[index];
 339         if (is_iomem)
 340                 iowrite32_native(val, (void __force __iomem *)mem);
 341         else
 342                 *mem = val;
 343 }
 344
 345 static struct ttm_backend *
 346 nouveau_bo_create_ttm_backend_entry(struct ttm_bo_device *bdev)
 347 {
 348         struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
 349         struct drm_device *dev = dev_priv->dev;
 350
 351         switch (dev_priv->gart_info.type) {
 352 #if __OS_HAS_AGP
 353         case NOUVEAU_GART_AGP:
 354                 return ttm_agp_backend_init(bdev, dev->agp->bridge);
 355 #endif
 356         case NOUVEAU_GART_SGDMA:
 357                 return nouveau_sgdma_init_ttm(dev);
 358         default:
 359                 NV_ERROR(dev, "Unknown GART type %d\n",
 360                          dev_priv->gart_info.type);
 361                 break;
 362         }
 363
 364         return NULL;
 365 }
 366
 367 static int
 368 nouveau_bo_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
 369 {
 370         /* We'll do this from user space. */
 371         return 0;
 372 }
 373
 374 static int
 375 nouveau_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
 376                          struct ttm_mem_type_manager *man)
 377 {
 378         struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
 379         struct drm_device *dev = dev_priv->dev;
 380
 381         switch (type) {
 382         case TTM_PL_SYSTEM:
 383                 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
 384                 man->available_caching = TTM_PL_MASK_CACHING;
 385                 man->default_caching = TTM_PL_FLAG_CACHED;
 386                 break;
 387         case TTM_PL_VRAM:
 388                 man->flags = TTM_MEMTYPE_FLAG_FIXED |
 389                              TTM_MEMTYPE_FLAG_MAPPABLE |
 390                              TTM_MEMTYPE_FLAG_NEEDS_IOREMAP;
 391                 man->available_caching = TTM_PL_FLAG_UNCACHED |
 392                                          TTM_PL_FLAG_WC;
 393                 man->default_caching = TTM_PL_FLAG_WC;
 394
 395                 man->io_addr = NULL;
 396                 man->io_offset = drm_get_resource_start(dev, 1);
 397                 man->io_size = drm_get_resource_len(dev, 1);
 398                 if (man->io_size > nouveau_mem_fb_amount(dev))
 399                         man->io_size = nouveau_mem_fb_amount(dev);
 400
 401                 man->gpu_offset = dev_priv->vm_vram_base;
 402                 break;
 403         case TTM_PL_TT:
 404                 switch (dev_priv->gart_info.type) {
 405                 case NOUVEAU_GART_AGP:
 406                         man->flags = TTM_MEMTYPE_FLAG_MAPPABLE |
 407                                      TTM_MEMTYPE_FLAG_NEEDS_IOREMAP;
 408                         man->available_caching = TTM_PL_FLAG_UNCACHED;
 409                         man->default_caching = TTM_PL_FLAG_UNCACHED;
 410                         break;
 411                 case NOUVEAU_GART_SGDMA:
 412                         man->flags = TTM_MEMTYPE_FLAG_MAPPABLE |
 413                                      TTM_MEMTYPE_FLAG_CMA;
 414                         man->available_caching = TTM_PL_MASK_CACHING;
 415                         man->default_caching = TTM_PL_FLAG_CACHED;
 416                         break;
 417                 default:
 418                         NV_ERROR(dev, "Unknown GART type: %d\n",
 419                                  dev_priv->gart_info.type);
 420                         return -EINVAL;
 421                 }
 422
 423                 man->io_offset  = dev_priv->gart_info.aper_base;
 424                 man->io_size    = dev_priv->gart_info.aper_size;
 425                 man->io_addr   = NULL;
 426                 man->gpu_offset = dev_priv->vm_gart_base;
 427                 break;
 428         default:
 429                 NV_ERROR(dev, "Unsupported memory type %u\n", (unsigned)type);
 430                 return -EINVAL;
 431         }
 432         return 0;
 433 }
 434
 435 static void
 436 nouveau_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
 437 {
 438         struct nouveau_bo *nvbo = nouveau_bo(bo);
 439
 440         switch (bo->mem.mem_type) {
 441         case TTM_PL_VRAM:
 442                 nouveau_bo_placement_set(nvbo, TTM_PL_FLAG_TT |
 443                                          TTM_PL_FLAG_SYSTEM);
 444                 break;
 445         default:
 446                 nouveau_bo_placement_set(nvbo, TTM_PL_FLAG_SYSTEM);
 447                 break;
 448         }
 449
 450         *pl = nvbo->placement;
 451 }
 452
 453
 454 /* GPU-assisted copy using NV_MEMORY_TO_MEMORY_FORMAT, can access
 455  * TTM_PL_{VRAM,TT} directly.
 456  */
 457
 458 static int
 459 nouveau_bo_move_accel_cleanup(struct nouveau_channel *chan,
 460                               struct nouveau_bo *nvbo, bool evict, bool no_wait,
 461                               struct ttm_mem_reg *new_mem)
 462 {
 463         struct nouveau_fence *fence = NULL;
 464         int ret;
 465
 466         ret = nouveau_fence_new(chan, &fence, true);
 467         if (ret)
 468                 return ret;
 469
 470         ret = ttm_bo_move_accel_cleanup(&nvbo->bo, fence, NULL,
 471                                         evict, no_wait, new_mem);
 472         if (nvbo->channel && nvbo->channel != chan)
 473                 ret = nouveau_fence_wait(fence, NULL, false, false);
 474         nouveau_fence_unref((void *)&fence);
 475         return ret;
 476 }
 477
 478 static inline uint32_t
 479 nouveau_bo_mem_ctxdma(struct nouveau_bo *nvbo, struct nouveau_channel *chan,
 480                       struct ttm_mem_reg *mem)
 481 {
 482         if (chan == nouveau_bdev(nvbo->bo.bdev)->channel) {
 483                 if (mem->mem_type == TTM_PL_TT)
 484                         return NvDmaGART;
 485                 return NvDmaVRAM;
 486         }
 487
 488         if (mem->mem_type == TTM_PL_TT)
 489                 return chan->gart_handle;
 490         return chan->vram_handle;
 491 }
 492
 493 static int
 494 nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr,
 495                      int no_wait, struct ttm_mem_reg *new_mem)
 496 {
 497         struct nouveau_bo *nvbo = nouveau_bo(bo);
 498         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 499         struct ttm_mem_reg *old_mem = &bo->mem;
 500         struct nouveau_channel *chan;
 501         uint64_t src_offset, dst_offset;
 502         uint32_t page_count;
 503         int ret;
 504
 505         chan = nvbo->channel;
 506         if (!chan || nvbo->tile_flags || nvbo->no_vm)
 507                 chan = dev_priv->channel;
 508
 509         src_offset = old_mem->mm_node->start << PAGE_SHIFT;
 510         dst_offset = new_mem->mm_node->start << PAGE_SHIFT;
 511         if (chan != dev_priv->channel) {
 512                 if (old_mem->mem_type == TTM_PL_TT)
 513                         src_offset += dev_priv->vm_gart_base;
 514                 else
 515                         src_offset += dev_priv->vm_vram_base;
 516
 517                 if (new_mem->mem_type == TTM_PL_TT)
 518                         dst_offset += dev_priv->vm_gart_base;
 519                 else
 520                         dst_offset += dev_priv->vm_vram_base;
 521         }
 522
 523         ret = RING_SPACE(chan, 3);
 524         if (ret)
 525                 return ret;
 526         BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE, 2);
 527         OUT_RING(chan, nouveau_bo_mem_ctxdma(nvbo, chan, old_mem));
 528         OUT_RING(chan, nouveau_bo_mem_ctxdma(nvbo, chan, new_mem));
 529
 530         if (dev_priv->card_type >= NV_50) {
 531                 ret = RING_SPACE(chan, 4);
 532                 if (ret)
 533                         return ret;
 534                 BEGIN_RING(chan, NvSubM2MF, 0x0200, 1);
 535                 OUT_RING(chan, 1);
 536                 BEGIN_RING(chan, NvSubM2MF, 0x021c, 1);
 537                 OUT_RING(chan, 1);
 538         }
 539
 540         page_count = new_mem->num_pages;
 541         while (page_count) {
 542                 int line_count = (page_count > 2047) ? 2047 : page_count;
 543
 544                 if (dev_priv->card_type >= NV_50) {
 545                         ret = RING_SPACE(chan, 3);
 546                         if (ret)
 547                                 return ret;
 548                         BEGIN_RING(chan, NvSubM2MF, 0x0238, 2);
 549                         OUT_RING(chan, upper_32_bits(src_offset));
 550                         OUT_RING(chan, upper_32_bits(dst_offset));
 551                 }
 552                 ret = RING_SPACE(chan, 11);
 553                 if (ret)
 554                         return ret;
 555                 BEGIN_RING(chan, NvSubM2MF,
 556                                  NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
 557                 OUT_RING(chan, lower_32_bits(src_offset));
 558                 OUT_RING(chan, lower_32_bits(dst_offset));
 559                 OUT_RING(chan, PAGE_SIZE); /* src_pitch */
 560                 OUT_RING(chan, PAGE_SIZE); /* dst_pitch */
 561                 OUT_RING(chan, PAGE_SIZE); /* line_length */
 562                 OUT_RING(chan, line_count);
 563                 OUT_RING(chan, (1<<8)|(1<<0));
 564                 OUT_RING(chan, 0);
 565                 BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
 566                 OUT_RING(chan, 0);
 567
 568                 page_count -= line_count;
 569                 src_offset += (PAGE_SIZE * line_count);
 570                 dst_offset += (PAGE_SIZE * line_count);
 571         }
 572
 573         return nouveau_bo_move_accel_cleanup(chan, nvbo, evict, no_wait, new_mem);
 574 }
 575
 576 static int
 577 nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr,
 578                       bool no_wait, struct ttm_mem_reg *new_mem)
 579 {
 580         u32 placement_memtype = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 581         struct ttm_placement placement;
 582         struct ttm_mem_reg tmp_mem;
 583         int ret;
 584
 585         placement.fpfn = placement.lpfn = 0;
 586         placement.num_placement = placement.num_busy_placement = 1;
 587         placement.placement = placement.busy_placement = &placement_memtype;
 588
 589         tmp_mem = *new_mem;
 590         tmp_mem.mm_node = NULL;
 591         ret = ttm_bo_mem_space(bo, &placement, &tmp_mem, intr, no_wait);
 592         if (ret)
 593                 return ret;
 594
 595         ret = ttm_tt_bind(bo->ttm, &tmp_mem);
 596         if (ret)
 597                 goto out;
 598
 599         ret = nouveau_bo_move_m2mf(bo, true, intr, no_wait, &tmp_mem);
 600         if (ret)
 601                 goto out;
 602
 603         ret = ttm_bo_move_ttm(bo, evict, no_wait, new_mem);
 604 out:
 605         if (tmp_mem.mm_node) {
 606                 spin_lock(&bo->bdev->glob->lru_lock);
 607                 drm_mm_put_block(tmp_mem.mm_node);
 608                 spin_unlock(&bo->bdev->glob->lru_lock);
 609         }
 610
 611         return ret;
 612 }
 613
 614 static int
 615 nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
 616                       bool no_wait, struct ttm_mem_reg *new_mem)
 617 {
 618         u32 placement_memtype = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 619         struct ttm_placement placement;
 620         struct ttm_mem_reg tmp_mem;
 621         int ret;
 622
 623         placement.fpfn = placement.lpfn = 0;
 624         placement.num_placement = placement.num_busy_placement = 1;
 625         placement.placement = placement.busy_placement = &placement_memtype;
 626
 627         tmp_mem = *new_mem;
 628         tmp_mem.mm_node = NULL;
 629         ret = ttm_bo_mem_space(bo, &placement, &tmp_mem, intr, no_wait);
 630         if (ret)
 631                 return ret;
 632
 633         ret = ttm_bo_move_ttm(bo, evict, no_wait, &tmp_mem);
 634         if (ret)
 635                 goto out;
 636
 637         ret = nouveau_bo_move_m2mf(bo, evict, intr, no_wait, new_mem);
 638         if (ret)
 639                 goto out;
 640
 641 out:
 642         if (tmp_mem.mm_node) {
 643                 spin_lock(&bo->bdev->glob->lru_lock);
 644                 drm_mm_put_block(tmp_mem.mm_node);
 645                 spin_unlock(&bo->bdev->glob->lru_lock);
 646         }
 647
 648         return ret;
 649 }
 650
 651 static int
 652 nouveau_bo_vm_bind(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem,
 653                    struct nouveau_tile_reg **new_tile)
 654 {
 655         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 656         struct drm_device *dev = dev_priv->dev;
 657         struct nouveau_bo *nvbo = nouveau_bo(bo);
 658         uint64_t offset;
 659         int ret;
 660
 661         if (nvbo->no_vm || new_mem->mem_type != TTM_PL_VRAM) {
 662                 /* Nothing to do. */
 663                 *new_tile = NULL;
 664                 return 0;
 665         }
 666
 667         offset = new_mem->mm_node->start << PAGE_SHIFT;
 668
 669         if (dev_priv->card_type == NV_50) {
 670                 ret = nv50_mem_vm_bind_linear(dev,
 671                                               offset + dev_priv->vm_vram_base,
 672                                               new_mem->size, nvbo->tile_flags,
 673                                               offset);
 674                 if (ret)
 675                         return ret;
 676
 677         } else if (dev_priv->card_type >= NV_10) {
 678                 *new_tile = nv10_mem_set_tiling(dev, offset, new_mem->size,
 679                                                 nvbo->tile_mode);
 680         }
 681
 682         return 0;
 683 }
 684
 685 static void
 686 nouveau_bo_vm_cleanup(struct ttm_buffer_object *bo,
 687                       struct nouveau_tile_reg *new_tile,
 688                       struct nouveau_tile_reg **old_tile)
 689 {
 690         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 691         struct drm_device *dev = dev_priv->dev;
 692
 693         if (dev_priv->card_type >= NV_10 &&
 694             dev_priv->card_type < NV_50) {
 695                 if (*old_tile)
 696                         nv10_mem_expire_tiling(dev, *old_tile, bo->sync_obj);
 697
 698                 *old_tile = new_tile;
 699         }
 700 }
 701
 702 static int
 703 nouveau_bo_move(struct ttm_buffer_object *bo, bool evict, bool intr,
 704                 bool no_wait, struct ttm_mem_reg *new_mem)
 705 {
 706         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 707         struct nouveau_bo *nvbo = nouveau_bo(bo);
 708         struct ttm_mem_reg *old_mem = &bo->mem;
 709         struct nouveau_tile_reg *new_tile = NULL;
 710         int ret = 0;
 711
 712         ret = nouveau_bo_vm_bind(bo, new_mem, &new_tile);
 713         if (ret)
 714                 return ret;
 715
 716         /* Software copy if the card isn't up and running yet. */
 717         if (dev_priv->init_state != NOUVEAU_CARD_INIT_DONE ||
 718             !dev_priv->channel) {
 719                 ret = ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
 720                 goto out;
 721         }
 722
 723         /* Fake bo copy. */
 724         if (old_mem->mem_type == TTM_PL_SYSTEM && !bo->ttm) {
 725                 BUG_ON(bo->mem.mm_node != NULL);
 726                 bo->mem = *new_mem;
 727                 new_mem->mm_node = NULL;
 728                 goto out;
 729         }
 730
 731         /* Hardware assisted copy. */
 732         if (new_mem->mem_type == TTM_PL_SYSTEM)
 733                 ret = nouveau_bo_move_flipd(bo, evict, intr, no_wait, new_mem);
 734         else if (old_mem->mem_type == TTM_PL_SYSTEM)
 735                 ret = nouveau_bo_move_flips(bo, evict, intr, no_wait, new_mem);
 736         else
 737                 ret = nouveau_bo_move_m2mf(bo, evict, intr, no_wait, new_mem);
 738
 739         if (!ret)
 740                 goto out;
 741
 742         /* Fallback to software copy. */
 743         ret = ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
 744
 745 out:
 746         if (ret)
 747                 nouveau_bo_vm_cleanup(bo, NULL, &new_tile);
 748         else
 749                 nouveau_bo_vm_cleanup(bo, new_tile, &nvbo->tile);
 750
 751         return ret;
 752 }
 753
 754 static int
 755 nouveau_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
 756 {
 757         return 0;
 758 }
 759
 760 struct ttm_bo_driver nouveau_bo_driver = {
 761         .create_ttm_backend_entry = nouveau_bo_create_ttm_backend_entry,
 762         .invalidate_caches = nouveau_bo_invalidate_caches,
 763         .init_mem_type = nouveau_bo_init_mem_type,
 764         .evict_flags = nouveau_bo_evict_flags,
 765         .move = nouveau_bo_move,
 766         .verify_access = nouveau_bo_verify_access,
 767         .sync_obj_signaled = nouveau_fence_signalled,
 768         .sync_obj_wait = nouveau_fence_wait,
 769         .sync_obj_flush = nouveau_fence_flush,
 770         .sync_obj_unref = nouveau_fence_unref,
 771         .sync_obj_ref = nouveau_fence_ref,
 772 };
 773