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 #include <linux/slab.h>
  38
  39 static void
  40 nouveau_bo_del_ttm(struct ttm_buffer_object *bo)
  41 {
  42         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
  43         struct drm_device *dev = dev_priv->dev;
  44         struct nouveau_bo *nvbo = nouveau_bo(bo);
  45
  46         if (unlikely(nvbo->gem))
  47                 DRM_ERROR("bo %p still attached to GEM object\n", bo);
  48
  49         if (nvbo->tile)
  50                 nv10_mem_expire_tiling(dev, nvbo->tile, NULL);
  51
  52         kfree(nvbo);
  53 }
  54
  55 static void
  56 nouveau_bo_fixup_align(struct drm_device *dev,
  57                        uint32_t tile_mode, uint32_t tile_flags,
  58                        int *align, int *size)
  59 {
  60         struct drm_nouveau_private *dev_priv = dev->dev_private;
  61
  62         /*
  63          * Some of the tile_flags have a periodic structure of N*4096 bytes,
  64          * align to to that as well as the page size. Align the size to the
  65          * appropriate boundaries. This does imply that sizes are rounded up
  66          * 3-7 pages, so be aware of this and do not waste memory by allocating
  67          * many small buffers.
  68          */
  69         if (dev_priv->card_type == NV_50) {
  70                 uint32_t block_size = dev_priv->vram_size >> 15;
  71                 int i;
  72
  73                 switch (tile_flags) {
  74                 case 0x1800:
  75                 case 0x2800:
  76                 case 0x4800:
  77                 case 0x7a00:
  78                         if (is_power_of_2(block_size)) {
  79                                 for (i = 1; i < 10; i++) {
  80                                         *align = 12 * i * block_size;
  81                                         if (!(*align % 65536))
  82                                                 break;
  83                                 }
  84                         } else {
  85                                 for (i = 1; i < 10; i++) {
  86                                         *align = 8 * i * block_size;
  87                                         if (!(*align % 65536))
  88                                                 break;
  89                                 }
  90                         }
  91                         *size = roundup(*size, *align);
  92                         break;
  93                 default:
  94                         break;
  95                 }
  96
  97         } else {
  98                 if (tile_mode) {
  99                         if (dev_priv->chipset >= 0x40) {
 100                                 *align = 65536;
 101                                 *size = roundup(*size, 64 * tile_mode);
 102
 103                         } else if (dev_priv->chipset >= 0x30) {
 104                                 *align = 32768;
 105                                 *size = roundup(*size, 64 * tile_mode);
 106
 107                         } else if (dev_priv->chipset >= 0x20) {
 108                                 *align = 16384;
 109                                 *size = roundup(*size, 64 * tile_mode);
 110
 111                         } else if (dev_priv->chipset >= 0x10) {
 112                                 *align = 16384;
 113                                 *size = roundup(*size, 32 * tile_mode);
 114                         }
 115                 }
 116         }
 117
 118         /* ALIGN works only on powers of two. */
 119         *size = roundup(*size, PAGE_SIZE);
 120
 121         if (dev_priv->card_type == NV_50) {
 122                 *size = roundup(*size, 65536);
 123                 *align = max(65536, *align);
 124         }
 125 }
 126
 127 int
 128 nouveau_bo_new(struct drm_device *dev, struct nouveau_channel *chan,
 129                int size, int align, uint32_t flags, uint32_t tile_mode,
 130                uint32_t tile_flags, bool no_vm, bool mappable,
 131                struct nouveau_bo **pnvbo)
 132 {
 133         struct drm_nouveau_private *dev_priv = dev->dev_private;
 134         struct nouveau_bo *nvbo;
 135         int ret = 0;
 136
 137         nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
 138         if (!nvbo)
 139                 return -ENOMEM;
 140         INIT_LIST_HEAD(&nvbo->head);
 141         INIT_LIST_HEAD(&nvbo->entry);
 142         nvbo->mappable = mappable;
 143         nvbo->no_vm = no_vm;
 144         nvbo->tile_mode = tile_mode;
 145         nvbo->tile_flags = tile_flags;
 146         nvbo->bo.bdev = &dev_priv->ttm.bdev;
 147
 148         nouveau_bo_fixup_align(dev, tile_mode, nouveau_bo_tile_layout(nvbo),
 149                                &align, &size);
 150         align >>= PAGE_SHIFT;
 151
 152         nouveau_bo_placement_set(nvbo, flags, 0);
 153
 154         nvbo->channel = chan;
 155         ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
 156                           ttm_bo_type_device, &nvbo->placement, align, 0,
 157                           false, NULL, size, nouveau_bo_del_ttm);
 158         if (ret) {
 159                 /* ttm will call nouveau_bo_del_ttm if it fails.. */
 160                 return ret;
 161         }
 162         nvbo->channel = NULL;
 163
 164         *pnvbo = nvbo;
 165         return 0;
 166 }
 167
 168 static void
 169 set_placement_list(uint32_t *pl, unsigned *n, uint32_t type, uint32_t flags)
 170 {
 171         *n = 0;
 172
 173         if (type & TTM_PL_FLAG_VRAM)
 174                 pl[(*n)++] = TTM_PL_FLAG_VRAM | flags;
 175         if (type & TTM_PL_FLAG_TT)
 176                 pl[(*n)++] = TTM_PL_FLAG_TT | flags;
 177         if (type & TTM_PL_FLAG_SYSTEM)
 178                 pl[(*n)++] = TTM_PL_FLAG_SYSTEM | flags;
 179 }
 180
 181 static void
 182 set_placement_range(struct nouveau_bo *nvbo, uint32_t type)
 183 {
 184         struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
 185
 186         if (dev_priv->card_type == NV_10 &&
 187             nvbo->tile_mode && (type & TTM_PL_FLAG_VRAM)) {
 188                 /*
 189                  * Make sure that the color and depth buffers are handled
 190                  * by independent memory controller units. Up to a 9x
 191                  * speed up when alpha-blending and depth-test are enabled
 192                  * at the same time.
 193                  */
 194                 int vram_pages = dev_priv->vram_size >> PAGE_SHIFT;
 195
 196                 if (nvbo->tile_flags & NOUVEAU_GEM_TILE_ZETA) {
 197                         nvbo->placement.fpfn = vram_pages / 2;
 198                         nvbo->placement.lpfn = ~0;
 199                 } else {
 200                         nvbo->placement.fpfn = 0;
 201                         nvbo->placement.lpfn = vram_pages / 2;
 202                 }
 203         }
 204 }
 205
 206 void
 207 nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t type, uint32_t busy)
 208 {
 209         struct ttm_placement *pl = &nvbo->placement;
 210         uint32_t flags = TTM_PL_MASK_CACHING |
 211                 (nvbo->pin_refcnt ? TTM_PL_FLAG_NO_EVICT : 0);
 212
 213         pl->placement = nvbo->placements;
 214         set_placement_list(nvbo->placements, &pl->num_placement,
 215                            type, flags);
 216
 217         pl->busy_placement = nvbo->busy_placements;
 218         set_placement_list(nvbo->busy_placements, &pl->num_busy_placement,
 219                            type | busy, flags);
 220
 221         set_placement_range(nvbo, type);
 222 }
 223
 224 int
 225 nouveau_bo_pin(struct nouveau_bo *nvbo, uint32_t memtype)
 226 {
 227         struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
 228         struct ttm_buffer_object *bo = &nvbo->bo;
 229         int ret;
 230
 231         if (nvbo->pin_refcnt && !(memtype & (1 << bo->mem.mem_type))) {
 232                 NV_ERROR(nouveau_bdev(bo->bdev)->dev,
 233                          "bo %p pinned elsewhere: 0x%08x vs 0x%08x\n", bo,
 234                          1 << bo->mem.mem_type, memtype);
 235                 return -EINVAL;
 236         }
 237
 238         if (nvbo->pin_refcnt++)
 239                 return 0;
 240
 241         ret = ttm_bo_reserve(bo, false, false, false, 0);
 242         if (ret)
 243                 goto out;
 244
 245         nouveau_bo_placement_set(nvbo, memtype, 0);
 246
 247         ret = ttm_bo_validate(bo, &nvbo->placement, false, false, false);
 248         if (ret == 0) {
 249                 switch (bo->mem.mem_type) {
 250                 case TTM_PL_VRAM:
 251                         dev_priv->fb_aper_free -= bo->mem.size;
 252                         break;
 253                 case TTM_PL_TT:
 254                         dev_priv->gart_info.aper_free -= bo->mem.size;
 255                         break;
 256                 default:
 257                         break;
 258                 }
 259         }
 260         ttm_bo_unreserve(bo);
 261 out:
 262         if (unlikely(ret))
 263                 nvbo->pin_refcnt--;
 264         return ret;
 265 }
 266
 267 int
 268 nouveau_bo_unpin(struct nouveau_bo *nvbo)
 269 {
 270         struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
 271         struct ttm_buffer_object *bo = &nvbo->bo;
 272         int ret;
 273
 274         if (--nvbo->pin_refcnt)
 275                 return 0;
 276
 277         ret = ttm_bo_reserve(bo, false, false, false, 0);
 278         if (ret)
 279                 return ret;
 280
 281         nouveau_bo_placement_set(nvbo, bo->mem.placement, 0);
 282
 283         ret = ttm_bo_validate(bo, &nvbo->placement, false, false, false);
 284         if (ret == 0) {
 285                 switch (bo->mem.mem_type) {
 286                 case TTM_PL_VRAM:
 287                         dev_priv->fb_aper_free += bo->mem.size;
 288                         break;
 289                 case TTM_PL_TT:
 290                         dev_priv->gart_info.aper_free += bo->mem.size;
 291                         break;
 292                 default:
 293                         break;
 294                 }
 295         }
 296
 297         ttm_bo_unreserve(bo);
 298         return ret;
 299 }
 300
 301 int
 302 nouveau_bo_map(struct nouveau_bo *nvbo)
 303 {
 304         int ret;
 305
 306         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
 307         if (ret)
 308                 return ret;
 309
 310         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages, &nvbo->kmap);
 311         ttm_bo_unreserve(&nvbo->bo);
 312         return ret;
 313 }
 314
 315 void
 316 nouveau_bo_unmap(struct nouveau_bo *nvbo)
 317 {
 318         if (nvbo)
 319                 ttm_bo_kunmap(&nvbo->kmap);
 320 }
 321
 322 u16
 323 nouveau_bo_rd16(struct nouveau_bo *nvbo, unsigned index)
 324 {
 325         bool is_iomem;
 326         u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 327         mem = &mem[index];
 328         if (is_iomem)
 329                 return ioread16_native((void __force __iomem *)mem);
 330         else
 331                 return *mem;
 332 }
 333
 334 void
 335 nouveau_bo_wr16(struct nouveau_bo *nvbo, unsigned index, u16 val)
 336 {
 337         bool is_iomem;
 338         u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 339         mem = &mem[index];
 340         if (is_iomem)
 341                 iowrite16_native(val, (void __force __iomem *)mem);
 342         else
 343                 *mem = val;
 344 }
 345
 346 u32
 347 nouveau_bo_rd32(struct nouveau_bo *nvbo, unsigned index)
 348 {
 349         bool is_iomem;
 350         u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 351         mem = &mem[index];
 352         if (is_iomem)
 353                 return ioread32_native((void __force __iomem *)mem);
 354         else
 355                 return *mem;
 356 }
 357
 358 void
 359 nouveau_bo_wr32(struct nouveau_bo *nvbo, unsigned index, u32 val)
 360 {
 361         bool is_iomem;
 362         u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
 363         mem = &mem[index];
 364         if (is_iomem)
 365                 iowrite32_native(val, (void __force __iomem *)mem);
 366         else
 367                 *mem = val;
 368 }
 369
 370 static struct ttm_backend *
 371 nouveau_bo_create_ttm_backend_entry(struct ttm_bo_device *bdev)
 372 {
 373         struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
 374         struct drm_device *dev = dev_priv->dev;
 375
 376         switch (dev_priv->gart_info.type) {
 377 #if __OS_HAS_AGP
 378         case NOUVEAU_GART_AGP:
 379                 return ttm_agp_backend_init(bdev, dev->agp->bridge);
 380 #endif
 381         case NOUVEAU_GART_SGDMA:
 382                 return nouveau_sgdma_init_ttm(dev);
 383         default:
 384                 NV_ERROR(dev, "Unknown GART type %d\n",
 385                          dev_priv->gart_info.type);
 386                 break;
 387         }
 388
 389         return NULL;
 390 }
 391
 392 static int
 393 nouveau_bo_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
 394 {
 395         /* We'll do this from user space. */
 396         return 0;
 397 }
 398
 399 static int
 400 nouveau_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
 401                          struct ttm_mem_type_manager *man)
 402 {
 403         struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
 404         struct drm_device *dev = dev_priv->dev;
 405
 406         switch (type) {
 407         case TTM_PL_SYSTEM:
 408                 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
 409                 man->available_caching = TTM_PL_MASK_CACHING;
 410                 man->default_caching = TTM_PL_FLAG_CACHED;
 411                 break;
 412         case TTM_PL_VRAM:
 413                 man->func = &ttm_bo_manager_func;
 414                 man->flags = TTM_MEMTYPE_FLAG_FIXED |
 415                              TTM_MEMTYPE_FLAG_MAPPABLE;
 416                 man->available_caching = TTM_PL_FLAG_UNCACHED |
 417                                          TTM_PL_FLAG_WC;
 418                 man->default_caching = TTM_PL_FLAG_WC;
 419                 if (dev_priv->card_type == NV_50)
 420                         man->gpu_offset = 0x40000000;
 421                 else
 422                         man->gpu_offset = 0;
 423                 break;
 424         case TTM_PL_TT:
 425                 man->func = &ttm_bo_manager_func;
 426                 switch (dev_priv->gart_info.type) {
 427                 case NOUVEAU_GART_AGP:
 428                         man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
 429                         man->available_caching = TTM_PL_FLAG_UNCACHED;
 430                         man->default_caching = TTM_PL_FLAG_UNCACHED;
 431                         break;
 432                 case NOUVEAU_GART_SGDMA:
 433                         man->flags = TTM_MEMTYPE_FLAG_MAPPABLE |
 434                                      TTM_MEMTYPE_FLAG_CMA;
 435                         man->available_caching = TTM_PL_MASK_CACHING;
 436                         man->default_caching = TTM_PL_FLAG_CACHED;
 437                         break;
 438                 default:
 439                         NV_ERROR(dev, "Unknown GART type: %d\n",
 440                                  dev_priv->gart_info.type);
 441                         return -EINVAL;
 442                 }
 443                 man->gpu_offset = dev_priv->vm_gart_base;
 444                 break;
 445         default:
 446                 NV_ERROR(dev, "Unsupported memory type %u\n", (unsigned)type);
 447                 return -EINVAL;
 448         }
 449         return 0;
 450 }
 451
 452 static void
 453 nouveau_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
 454 {
 455         struct nouveau_bo *nvbo = nouveau_bo(bo);
 456
 457         switch (bo->mem.mem_type) {
 458         case TTM_PL_VRAM:
 459                 nouveau_bo_placement_set(nvbo, TTM_PL_FLAG_TT,
 460                                          TTM_PL_FLAG_SYSTEM);
 461                 break;
 462         default:
 463                 nouveau_bo_placement_set(nvbo, TTM_PL_FLAG_SYSTEM, 0);
 464                 break;
 465         }
 466
 467         *pl = nvbo->placement;
 468 }
 469
 470
 471 /* GPU-assisted copy using NV_MEMORY_TO_MEMORY_FORMAT, can access
 472  * TTM_PL_{VRAM,TT} directly.
 473  */
 474
 475 static int
 476 nouveau_bo_move_accel_cleanup(struct nouveau_channel *chan,
 477                               struct nouveau_bo *nvbo, bool evict,
 478                               bool no_wait_reserve, bool no_wait_gpu,
 479                               struct ttm_mem_reg *new_mem)
 480 {
 481         struct nouveau_fence *fence = NULL;
 482         int ret;
 483
 484         ret = nouveau_fence_new(chan, &fence, true);
 485         if (ret)
 486                 return ret;
 487
 488         if (nvbo->channel) {
 489                 ret = nouveau_fence_sync(fence, nvbo->channel);
 490                 if (ret)
 491                         goto out;
 492         }
 493
 494         ret = ttm_bo_move_accel_cleanup(&nvbo->bo, fence, NULL, evict,
 495                                         no_wait_reserve, no_wait_gpu, new_mem);
 496 out:
 497         nouveau_fence_unref((void *)&fence);
 498         return ret;
 499 }
 500
 501 static inline uint32_t
 502 nouveau_bo_mem_ctxdma(struct ttm_buffer_object *bo,
 503                       struct nouveau_channel *chan, struct ttm_mem_reg *mem)
 504 {
 505         struct nouveau_bo *nvbo = nouveau_bo(bo);
 506
 507         if (nvbo->no_vm) {
 508                 if (mem->mem_type == TTM_PL_TT)
 509                         return NvDmaGART;
 510                 return NvDmaVRAM;
 511         }
 512
 513         if (mem->mem_type == TTM_PL_TT)
 514                 return chan->gart_handle;
 515         return chan->vram_handle;
 516 }
 517
 518 static int
 519 nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 520                   struct ttm_mem_reg *old_mem, struct ttm_mem_reg *new_mem)
 521 {
 522         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 523         struct nouveau_bo *nvbo = nouveau_bo(bo);
 524         u64 length = (new_mem->num_pages << PAGE_SHIFT);
 525         u64 src_offset, dst_offset;
 526         int ret;
 527
 528         src_offset = old_mem->start << PAGE_SHIFT;
 529         dst_offset = new_mem->start << PAGE_SHIFT;
 530         if (!nvbo->no_vm) {
 531                 if (old_mem->mem_type == TTM_PL_VRAM)
 532                         src_offset += dev_priv->vm_vram_base;
 533                 else
 534                         src_offset += dev_priv->vm_gart_base;
 535
 536                 if (new_mem->mem_type == TTM_PL_VRAM)
 537                         dst_offset += dev_priv->vm_vram_base;
 538                 else
 539                         dst_offset += dev_priv->vm_gart_base;
 540         }
 541
 542         ret = RING_SPACE(chan, 3);
 543         if (ret)
 544                 return ret;
 545
 546         BEGIN_RING(chan, NvSubM2MF, 0x0184, 2);
 547         OUT_RING  (chan, nouveau_bo_mem_ctxdma(bo, chan, old_mem));
 548         OUT_RING  (chan, nouveau_bo_mem_ctxdma(bo, chan, new_mem));
 549
 550         while (length) {
 551                 u32 amount, stride, height;
 552
 553                 amount  = min(length, (u64)(4 * 1024 * 1024));
 554                 stride  = 16 * 4;
 555                 height  = amount / stride;
 556
 557                 if (new_mem->mem_type == TTM_PL_VRAM &&
 558                     nouveau_bo_tile_layout(nvbo)) {
 559                         ret = RING_SPACE(chan, 8);
 560                         if (ret)
 561                                 return ret;
 562
 563                         BEGIN_RING(chan, NvSubM2MF, 0x0200, 7);
 564                         OUT_RING  (chan, 0);
 565                         OUT_RING  (chan, 0);
 566                         OUT_RING  (chan, stride);
 567                         OUT_RING  (chan, height);
 568                         OUT_RING  (chan, 1);
 569                         OUT_RING  (chan, 0);
 570                         OUT_RING  (chan, 0);
 571                 } else {
 572                         ret = RING_SPACE(chan, 2);
 573                         if (ret)
 574                                 return ret;
 575
 576                         BEGIN_RING(chan, NvSubM2MF, 0x0200, 1);
 577                         OUT_RING  (chan, 1);
 578                 }
 579                 if (old_mem->mem_type == TTM_PL_VRAM &&
 580                     nouveau_bo_tile_layout(nvbo)) {
 581                         ret = RING_SPACE(chan, 8);
 582                         if (ret)
 583                                 return ret;
 584
 585                         BEGIN_RING(chan, NvSubM2MF, 0x021c, 7);
 586                         OUT_RING  (chan, 0);
 587                         OUT_RING  (chan, 0);
 588                         OUT_RING  (chan, stride);
 589                         OUT_RING  (chan, height);
 590                         OUT_RING  (chan, 1);
 591                         OUT_RING  (chan, 0);
 592                         OUT_RING  (chan, 0);
 593                 } else {
 594                         ret = RING_SPACE(chan, 2);
 595                         if (ret)
 596                                 return ret;
 597
 598                         BEGIN_RING(chan, NvSubM2MF, 0x021c, 1);
 599                         OUT_RING  (chan, 1);
 600                 }
 601
 602                 ret = RING_SPACE(chan, 14);
 603                 if (ret)
 604                         return ret;
 605
 606                 BEGIN_RING(chan, NvSubM2MF, 0x0238, 2);
 607                 OUT_RING  (chan, upper_32_bits(src_offset));
 608                 OUT_RING  (chan, upper_32_bits(dst_offset));
 609                 BEGIN_RING(chan, NvSubM2MF, 0x030c, 8);
 610                 OUT_RING  (chan, lower_32_bits(src_offset));
 611                 OUT_RING  (chan, lower_32_bits(dst_offset));
 612                 OUT_RING  (chan, stride);
 613                 OUT_RING  (chan, stride);
 614                 OUT_RING  (chan, stride);
 615                 OUT_RING  (chan, height);
 616                 OUT_RING  (chan, 0x00000101);
 617                 OUT_RING  (chan, 0x00000000);
 618                 BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
 619                 OUT_RING  (chan, 0);
 620
 621                 length -= amount;
 622                 src_offset += amount;
 623                 dst_offset += amount;
 624         }
 625
 626         return 0;
 627 }
 628
 629 static int
 630 nv04_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 631                   struct ttm_mem_reg *old_mem, struct ttm_mem_reg *new_mem)
 632 {
 633         u32 src_offset = old_mem->start << PAGE_SHIFT;
 634         u32 dst_offset = new_mem->start << PAGE_SHIFT;
 635         u32 page_count = new_mem->num_pages;
 636         int ret;
 637
 638         ret = RING_SPACE(chan, 3);
 639         if (ret)
 640                 return ret;
 641
 642         BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE, 2);
 643         OUT_RING  (chan, nouveau_bo_mem_ctxdma(bo, chan, old_mem));
 644         OUT_RING  (chan, nouveau_bo_mem_ctxdma(bo, chan, new_mem));
 645
 646         page_count = new_mem->num_pages;
 647         while (page_count) {
 648                 int line_count = (page_count > 2047) ? 2047 : page_count;
 649
 650                 ret = RING_SPACE(chan, 11);
 651                 if (ret)
 652                         return ret;
 653
 654                 BEGIN_RING(chan, NvSubM2MF,
 655                                  NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
 656                 OUT_RING  (chan, src_offset);
 657                 OUT_RING  (chan, dst_offset);
 658                 OUT_RING  (chan, PAGE_SIZE); /* src_pitch */
 659                 OUT_RING  (chan, PAGE_SIZE); /* dst_pitch */
 660                 OUT_RING  (chan, PAGE_SIZE); /* line_length */
 661                 OUT_RING  (chan, line_count);
 662                 OUT_RING  (chan, 0x00000101);
 663                 OUT_RING  (chan, 0x00000000);
 664                 BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
 665                 OUT_RING  (chan, 0);
 666
 667                 page_count -= line_count;
 668                 src_offset += (PAGE_SIZE * line_count);
 669                 dst_offset += (PAGE_SIZE * line_count);
 670         }
 671
 672         return 0;
 673 }
 674
 675 static int
 676 nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr,
 677                      bool no_wait_reserve, bool no_wait_gpu,
 678                      struct ttm_mem_reg *new_mem)
 679 {
 680         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 681         struct nouveau_bo *nvbo = nouveau_bo(bo);
 682         struct nouveau_channel *chan;
 683         int ret;
 684
 685         chan = nvbo->channel;
 686         if (!chan || nvbo->no_vm)
 687                 chan = dev_priv->channel;
 688
 689         if (dev_priv->card_type < NV_50)
 690                 ret = nv04_bo_move_m2mf(chan, bo, &bo->mem, new_mem);
 691         else
 692                 ret = nv50_bo_move_m2mf(chan, bo, &bo->mem, new_mem);
 693         if (ret)
 694                 return ret;
 695
 696         return nouveau_bo_move_accel_cleanup(chan, nvbo, evict, no_wait_reserve, no_wait_gpu, new_mem);
 697 }
 698
 699 static int
 700 nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr,
 701                       bool no_wait_reserve, bool no_wait_gpu,
 702                       struct ttm_mem_reg *new_mem)
 703 {
 704         u32 placement_memtype = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 705         struct ttm_placement placement;
 706         struct ttm_mem_reg tmp_mem;
 707         int ret;
 708
 709         placement.fpfn = placement.lpfn = 0;
 710         placement.num_placement = placement.num_busy_placement = 1;
 711         placement.placement = placement.busy_placement = &placement_memtype;
 712
 713         tmp_mem = *new_mem;
 714         tmp_mem.mm_node = NULL;
 715         ret = ttm_bo_mem_space(bo, &placement, &tmp_mem, intr, no_wait_reserve, no_wait_gpu);
 716         if (ret)
 717                 return ret;
 718
 719         ret = ttm_tt_bind(bo->ttm, &tmp_mem);
 720         if (ret)
 721                 goto out;
 722
 723         ret = nouveau_bo_move_m2mf(bo, true, intr, no_wait_reserve, no_wait_gpu, &tmp_mem);
 724         if (ret)
 725                 goto out;
 726
 727         ret = ttm_bo_move_ttm(bo, evict, no_wait_reserve, no_wait_gpu, new_mem);
 728 out:
 729         ttm_bo_mem_put(bo, &tmp_mem);
 730         return ret;
 731 }
 732
 733 static int
 734 nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
 735                       bool no_wait_reserve, bool no_wait_gpu,
 736                       struct ttm_mem_reg *new_mem)
 737 {
 738         u32 placement_memtype = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
 739         struct ttm_placement placement;
 740         struct ttm_mem_reg tmp_mem;
 741         int ret;
 742
 743         placement.fpfn = placement.lpfn = 0;
 744         placement.num_placement = placement.num_busy_placement = 1;
 745         placement.placement = placement.busy_placement = &placement_memtype;
 746
 747         tmp_mem = *new_mem;
 748         tmp_mem.mm_node = NULL;
 749         ret = ttm_bo_mem_space(bo, &placement, &tmp_mem, intr, no_wait_reserve, no_wait_gpu);
 750         if (ret)
 751                 return ret;
 752
 753         ret = ttm_bo_move_ttm(bo, evict, no_wait_reserve, no_wait_gpu, &tmp_mem);
 754         if (ret)
 755                 goto out;
 756
 757         ret = nouveau_bo_move_m2mf(bo, evict, intr, no_wait_reserve, no_wait_gpu, new_mem);
 758         if (ret)
 759                 goto out;
 760
 761 out:
 762         ttm_bo_mem_put(bo, &tmp_mem);
 763         return ret;
 764 }
 765
 766 static int
 767 nouveau_bo_vm_bind(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem,
 768                    struct nouveau_tile_reg **new_tile)
 769 {
 770         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 771         struct drm_device *dev = dev_priv->dev;
 772         struct nouveau_bo *nvbo = nouveau_bo(bo);
 773         uint64_t offset;
 774         int ret;
 775
 776         if (nvbo->no_vm || new_mem->mem_type != TTM_PL_VRAM) {
 777                 /* Nothing to do. */
 778                 *new_tile = NULL;
 779                 return 0;
 780         }
 781
 782         offset = new_mem->start << PAGE_SHIFT;
 783
 784         if (dev_priv->card_type == NV_50) {
 785                 ret = nv50_mem_vm_bind_linear(dev,
 786                                               offset + dev_priv->vm_vram_base,
 787                                               new_mem->size,
 788                                               nouveau_bo_tile_layout(nvbo),
 789                                               offset);
 790                 if (ret)
 791                         return ret;
 792
 793         } else if (dev_priv->card_type >= NV_10) {
 794                 *new_tile = nv10_mem_set_tiling(dev, offset, new_mem->size,
 795                                                 nvbo->tile_mode);
 796         }
 797
 798         return 0;
 799 }
 800
 801 static void
 802 nouveau_bo_vm_cleanup(struct ttm_buffer_object *bo,
 803                       struct nouveau_tile_reg *new_tile,
 804                       struct nouveau_tile_reg **old_tile)
 805 {
 806         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 807         struct drm_device *dev = dev_priv->dev;
 808
 809         if (dev_priv->card_type >= NV_10 &&
 810             dev_priv->card_type < NV_50) {
 811                 if (*old_tile)
 812                         nv10_mem_expire_tiling(dev, *old_tile, bo->sync_obj);
 813
 814                 *old_tile = new_tile;
 815         }
 816 }
 817
 818 static int
 819 nouveau_bo_move(struct ttm_buffer_object *bo, bool evict, bool intr,
 820                 bool no_wait_reserve, bool no_wait_gpu,
 821                 struct ttm_mem_reg *new_mem)
 822 {
 823         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 824         struct nouveau_bo *nvbo = nouveau_bo(bo);
 825         struct ttm_mem_reg *old_mem = &bo->mem;
 826         struct nouveau_tile_reg *new_tile = NULL;
 827         int ret = 0;
 828
 829         ret = nouveau_bo_vm_bind(bo, new_mem, &new_tile);
 830         if (ret)
 831                 return ret;
 832
 833         /* Fake bo copy. */
 834         if (old_mem->mem_type == TTM_PL_SYSTEM && !bo->ttm) {
 835                 BUG_ON(bo->mem.mm_node != NULL);
 836                 bo->mem = *new_mem;
 837                 new_mem->mm_node = NULL;
 838                 goto out;
 839         }
 840
 841         /* Software copy if the card isn't up and running yet. */
 842         if (!dev_priv->channel) {
 843                 ret = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, new_mem);
 844                 goto out;
 845         }
 846
 847         /* Hardware assisted copy. */
 848         if (new_mem->mem_type == TTM_PL_SYSTEM)
 849                 ret = nouveau_bo_move_flipd(bo, evict, intr, no_wait_reserve, no_wait_gpu, new_mem);
 850         else if (old_mem->mem_type == TTM_PL_SYSTEM)
 851                 ret = nouveau_bo_move_flips(bo, evict, intr, no_wait_reserve, no_wait_gpu, new_mem);
 852         else
 853                 ret = nouveau_bo_move_m2mf(bo, evict, intr, no_wait_reserve, no_wait_gpu, new_mem);
 854
 855         if (!ret)
 856                 goto out;
 857
 858         /* Fallback to software copy. */
 859         ret = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, new_mem);
 860
 861 out:
 862         if (ret)
 863                 nouveau_bo_vm_cleanup(bo, NULL, &new_tile);
 864         else
 865                 nouveau_bo_vm_cleanup(bo, new_tile, &nvbo->tile);
 866
 867         return ret;
 868 }
 869
 870 static int
 871 nouveau_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
 872 {
 873         return 0;
 874 }
 875
 876 static int
 877 nouveau_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
 878 {
 879         struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
 880         struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
 881         struct drm_device *dev = dev_priv->dev;
 882
 883         mem->bus.addr = NULL;
 884         mem->bus.offset = 0;
 885         mem->bus.size = mem->num_pages << PAGE_SHIFT;
 886         mem->bus.base = 0;
 887         mem->bus.is_iomem = false;
 888         if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
 889                 return -EINVAL;
 890         switch (mem->mem_type) {
 891         case TTM_PL_SYSTEM:
 892                 /* System memory */
 893                 return 0;
 894         case TTM_PL_TT:
 895 #if __OS_HAS_AGP
 896                 if (dev_priv->gart_info.type == NOUVEAU_GART_AGP) {
 897                         mem->bus.offset = mem->start << PAGE_SHIFT;
 898                         mem->bus.base = dev_priv->gart_info.aper_base;
 899                         mem->bus.is_iomem = true;
 900                 }
 901 #endif
 902                 break;
 903         case TTM_PL_VRAM:
 904                 mem->bus.offset = mem->start << PAGE_SHIFT;
 905                 mem->bus.base = pci_resource_start(dev->pdev, 1);
 906                 mem->bus.is_iomem = true;
 907                 break;
 908         default:
 909                 return -EINVAL;
 910         }
 911         return 0;
 912 }
 913
 914 static void
 915 nouveau_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
 916 {
 917 }
 918
 919 static int
 920 nouveau_ttm_fault_reserve_notify(struct ttm_buffer_object *bo)
 921 {
 922         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 923         struct nouveau_bo *nvbo = nouveau_bo(bo);
 924
 925         /* as long as the bo isn't in vram, and isn't tiled, we've got
 926          * nothing to do here.
 927          */
 928         if (bo->mem.mem_type != TTM_PL_VRAM) {
 929                 if (dev_priv->card_type < NV_50 ||
 930                     !nouveau_bo_tile_layout(nvbo))
 931                         return 0;
 932         }
 933
 934         /* make sure bo is in mappable vram */
 935         if (bo->mem.start + bo->mem.num_pages < dev_priv->fb_mappable_pages)
 936                 return 0;
 937
 938
 939         nvbo->placement.fpfn = 0;
 940         nvbo->placement.lpfn = dev_priv->fb_mappable_pages;
 941         nouveau_bo_placement_set(nvbo, TTM_PL_VRAM, 0);
 942         return ttm_bo_validate(bo, &nvbo->placement, false, true, false);
 943 }
 944
 945 struct ttm_bo_driver nouveau_bo_driver = {
 946         .create_ttm_backend_entry = nouveau_bo_create_ttm_backend_entry,
 947         .invalidate_caches = nouveau_bo_invalidate_caches,
 948         .init_mem_type = nouveau_bo_init_mem_type,
 949         .evict_flags = nouveau_bo_evict_flags,
 950         .move = nouveau_bo_move,
 951         .verify_access = nouveau_bo_verify_access,
 952         .sync_obj_signaled = nouveau_fence_signalled,
 953         .sync_obj_wait = nouveau_fence_wait,
 954         .sync_obj_flush = nouveau_fence_flush,
 955         .sync_obj_unref = nouveau_fence_unref,
 956         .sync_obj_ref = nouveau_fence_ref,
 957         .fault_reserve_notify = &nouveau_ttm_fault_reserve_notify,
 958         .io_mem_reserve = &nouveau_ttm_io_mem_reserve,
 959         .io_mem_free = &nouveau_ttm_io_mem_free,
 960 };
 961