drivers/gpu/drm/nouveau/nouveau_mem.c

   1 /*
   2  * Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3  * Copyright 2005 Stephane Marchesin
   4  *
   5  * The Weather Channel (TM) funded Tungsten Graphics to develop the
   6  * initial release of the Radeon 8500 driver under the XFree86 license.
   7  * This notice must be preserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the next
  17  * paragraph) shall be included in all copies or substantial portions of the
  18  * Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23  * THE AUTHORS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  24  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  25  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  26  * DEALINGS IN THE SOFTWARE.
  27  *
  28  * Authors:
  29  *    Keith Whitwell <keith@tungstengraphics.com>
  30  */
  31
  32
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "drm_sarea.h"
  36
  37 #include "nouveau_drv.h"
  38 #include "nouveau_pm.h"
  39 #include "nouveau_mm.h"
  40 #include "nouveau_vm.h"
  41
  42 /*
  43  * NV10-NV40 tiling helpers
  44  */
  45
  46 static void
  47 nv10_mem_update_tile_region(struct drm_device *dev,
  48                             struct nouveau_tile_reg *tile, uint32_t addr,
  49                             uint32_t size, uint32_t pitch, uint32_t flags)
  50 {
  51         struct drm_nouveau_private *dev_priv = dev->dev_private;
  52         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
  53         struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
  54         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
  55         int i = tile - dev_priv->tile.reg;
  56         unsigned long save;
  57
  58         nouveau_fence_unref(&tile->fence);
  59
  60         if (tile->pitch)
  61                 pfb->free_tile_region(dev, i);
  62
  63         if (pitch)
  64                 pfb->init_tile_region(dev, i, addr, size, pitch, flags);
  65
  66         spin_lock_irqsave(&dev_priv->context_switch_lock, save);
  67         pfifo->reassign(dev, false);
  68         pfifo->cache_pull(dev, false);
  69
  70         nouveau_wait_for_idle(dev);
  71
  72         pfb->set_tile_region(dev, i);
  73         pgraph->set_tile_region(dev, i);
  74
  75         pfifo->cache_pull(dev, true);
  76         pfifo->reassign(dev, true);
  77         spin_unlock_irqrestore(&dev_priv->context_switch_lock, save);
  78 }
  79
  80 static struct nouveau_tile_reg *
  81 nv10_mem_get_tile_region(struct drm_device *dev, int i)
  82 {
  83         struct drm_nouveau_private *dev_priv = dev->dev_private;
  84         struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
  85
  86         spin_lock(&dev_priv->tile.lock);
  87
  88         if (!tile->used &&
  89             (!tile->fence || nouveau_fence_signalled(tile->fence)))
  90                 tile->used = true;
  91         else
  92                 tile = NULL;
  93
  94         spin_unlock(&dev_priv->tile.lock);
  95         return tile;
  96 }
  97
  98 void
  99 nv10_mem_put_tile_region(struct drm_device *dev, struct nouveau_tile_reg *tile,
 100                          struct nouveau_fence *fence)
 101 {
 102         struct drm_nouveau_private *dev_priv = dev->dev_private;
 103
 104         if (tile) {
 105                 spin_lock(&dev_priv->tile.lock);
 106                 if (fence) {
 107                         /* Mark it as pending. */
 108                         tile->fence = fence;
 109                         nouveau_fence_ref(fence);
 110                 }
 111
 112                 tile->used = false;
 113                 spin_unlock(&dev_priv->tile.lock);
 114         }
 115 }
 116
 117 struct nouveau_tile_reg *
 118 nv10_mem_set_tiling(struct drm_device *dev, uint32_t addr, uint32_t size,
 119                     uint32_t pitch, uint32_t flags)
 120 {
 121         struct drm_nouveau_private *dev_priv = dev->dev_private;
 122         struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
 123         struct nouveau_tile_reg *tile, *found = NULL;
 124         int i;
 125
 126         for (i = 0; i < pfb->num_tiles; i++) {
 127                 tile = nv10_mem_get_tile_region(dev, i);
 128
 129                 if (pitch && !found) {
 130                         found = tile;
 131                         continue;
 132
 133                 } else if (tile && tile->pitch) {
 134                         /* Kill an unused tile region. */
 135                         nv10_mem_update_tile_region(dev, tile, 0, 0, 0, 0);
 136                 }
 137
 138                 nv10_mem_put_tile_region(dev, tile, NULL);
 139         }
 140
 141         if (found)
 142                 nv10_mem_update_tile_region(dev, found, addr, size,
 143                                             pitch, flags);
 144         return found;
 145 }
 146
 147 /*
 148  * Cleanup everything
 149  */
 150 void
 151 nouveau_mem_vram_fini(struct drm_device *dev)
 152 {
 153         struct drm_nouveau_private *dev_priv = dev->dev_private;
 154
 155         nouveau_bo_ref(NULL, &dev_priv->vga_ram);
 156
 157         ttm_bo_device_release(&dev_priv->ttm.bdev);
 158
 159         nouveau_ttm_global_release(dev_priv);
 160
 161         if (dev_priv->fb_mtrr >= 0) {
 162                 drm_mtrr_del(dev_priv->fb_mtrr,
 163                              pci_resource_start(dev->pdev, 1),
 164                              pci_resource_len(dev->pdev, 1), DRM_MTRR_WC);
 165                 dev_priv->fb_mtrr = -1;
 166         }
 167 }
 168
 169 void
 170 nouveau_mem_gart_fini(struct drm_device *dev)
 171 {
 172         nouveau_sgdma_takedown(dev);
 173
 174         if (drm_core_has_AGP(dev) && dev->agp) {
 175                 struct drm_agp_mem *entry, *tempe;
 176
 177                 /* Remove AGP resources, but leave dev->agp
 178                    intact until drv_cleanup is called. */
 179                 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
 180                         if (entry->bound)
 181                                 drm_unbind_agp(entry->memory);
 182                         drm_free_agp(entry->memory, entry->pages);
 183                         kfree(entry);
 184                 }
 185                 INIT_LIST_HEAD(&dev->agp->memory);
 186
 187                 if (dev->agp->acquired)
 188                         drm_agp_release(dev);
 189
 190                 dev->agp->acquired = 0;
 191                 dev->agp->enabled = 0;
 192         }
 193 }
 194
 195 static uint32_t
 196 nouveau_mem_detect_nv04(struct drm_device *dev)
 197 {
 198         uint32_t boot0 = nv_rd32(dev, NV04_PFB_BOOT_0);
 199
 200         if (boot0 & 0x00000100)
 201                 return (((boot0 >> 12) & 0xf) * 2 + 2) * 1024 * 1024;
 202
 203         switch (boot0 & NV04_PFB_BOOT_0_RAM_AMOUNT) {
 204         case NV04_PFB_BOOT_0_RAM_AMOUNT_32MB:
 205                 return 32 * 1024 * 1024;
 206         case NV04_PFB_BOOT_0_RAM_AMOUNT_16MB:
 207                 return 16 * 1024 * 1024;
 208         case NV04_PFB_BOOT_0_RAM_AMOUNT_8MB:
 209                 return 8 * 1024 * 1024;
 210         case NV04_PFB_BOOT_0_RAM_AMOUNT_4MB:
 211                 return 4 * 1024 * 1024;
 212         }
 213
 214         return 0;
 215 }
 216
 217 static uint32_t
 218 nouveau_mem_detect_nforce(struct drm_device *dev)
 219 {
 220         struct drm_nouveau_private *dev_priv = dev->dev_private;
 221         struct pci_dev *bridge;
 222         uint32_t mem;
 223
 224         bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 1));
 225         if (!bridge) {
 226                 NV_ERROR(dev, "no bridge device\n");
 227                 return 0;
 228         }
 229
 230         if (dev_priv->flags & NV_NFORCE) {
 231                 pci_read_config_dword(bridge, 0x7C, &mem);
 232                 return (uint64_t)(((mem >> 6) & 31) + 1)*1024*1024;
 233         } else
 234         if (dev_priv->flags & NV_NFORCE2) {
 235                 pci_read_config_dword(bridge, 0x84, &mem);
 236                 return (uint64_t)(((mem >> 4) & 127) + 1)*1024*1024;
 237         }
 238
 239         NV_ERROR(dev, "impossible!\n");
 240         return 0;
 241 }
 242
 243 int
 244 nouveau_mem_detect(struct drm_device *dev)
 245 {
 246         struct drm_nouveau_private *dev_priv = dev->dev_private;
 247
 248         if (dev_priv->card_type == NV_04) {
 249                 dev_priv->vram_size = nouveau_mem_detect_nv04(dev);
 250         } else
 251         if (dev_priv->flags & (NV_NFORCE | NV_NFORCE2)) {
 252                 dev_priv->vram_size = nouveau_mem_detect_nforce(dev);
 253         } else
 254         if (dev_priv->card_type < NV_50) {
 255                 dev_priv->vram_size  = nv_rd32(dev, NV04_PFB_FIFO_DATA);
 256                 dev_priv->vram_size &= NV10_PFB_FIFO_DATA_RAM_AMOUNT_MB_MASK;
 257         }
 258
 259         if (dev_priv->vram_size)
 260                 return 0;
 261         return -ENOMEM;
 262 }
 263
 264 bool
 265 nouveau_mem_flags_valid(struct drm_device *dev, u32 tile_flags)
 266 {
 267         if (!(tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK))
 268                 return true;
 269
 270         return false;
 271 }
 272
 273 #if __OS_HAS_AGP
 274 static unsigned long
 275 get_agp_mode(struct drm_device *dev, unsigned long mode)
 276 {
 277         struct drm_nouveau_private *dev_priv = dev->dev_private;
 278
 279         /*
 280          * FW seems to be broken on nv18, it makes the card lock up
 281          * randomly.
 282          */
 283         if (dev_priv->chipset == 0x18)
 284                 mode &= ~PCI_AGP_COMMAND_FW;
 285
 286         /*
 287          * AGP mode set in the command line.
 288          */
 289         if (nouveau_agpmode > 0) {
 290                 bool agpv3 = mode & 0x8;
 291                 int rate = agpv3 ? nouveau_agpmode / 4 : nouveau_agpmode;
 292
 293                 mode = (mode & ~0x7) | (rate & 0x7);
 294         }
 295
 296         return mode;
 297 }
 298 #endif
 299
 300 int
 301 nouveau_mem_reset_agp(struct drm_device *dev)
 302 {
 303 #if __OS_HAS_AGP
 304         uint32_t saved_pci_nv_1, pmc_enable;
 305         int ret;
 306
 307         /* First of all, disable fast writes, otherwise if it's
 308          * already enabled in the AGP bridge and we disable the card's
 309          * AGP controller we might be locking ourselves out of it. */
 310         if ((nv_rd32(dev, NV04_PBUS_PCI_NV_19) |
 311              dev->agp->mode) & PCI_AGP_COMMAND_FW) {
 312                 struct drm_agp_info info;
 313                 struct drm_agp_mode mode;
 314
 315                 ret = drm_agp_info(dev, &info);
 316                 if (ret)
 317                         return ret;
 318
 319                 mode.mode = get_agp_mode(dev, info.mode) & ~PCI_AGP_COMMAND_FW;
 320                 ret = drm_agp_enable(dev, mode);
 321                 if (ret)
 322                         return ret;
 323         }
 324
 325         saved_pci_nv_1 = nv_rd32(dev, NV04_PBUS_PCI_NV_1);
 326
 327         /* clear busmaster bit */
 328         nv_wr32(dev, NV04_PBUS_PCI_NV_1, saved_pci_nv_1 & ~0x4);
 329         /* disable AGP */
 330         nv_wr32(dev, NV04_PBUS_PCI_NV_19, 0);
 331
 332         /* power cycle pgraph, if enabled */
 333         pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE);
 334         if (pmc_enable & NV_PMC_ENABLE_PGRAPH) {
 335                 nv_wr32(dev, NV03_PMC_ENABLE,
 336                                 pmc_enable & ~NV_PMC_ENABLE_PGRAPH);
 337                 nv_wr32(dev, NV03_PMC_ENABLE, nv_rd32(dev, NV03_PMC_ENABLE) |
 338                                 NV_PMC_ENABLE_PGRAPH);
 339         }
 340
 341         /* and restore (gives effect of resetting AGP) */
 342         nv_wr32(dev, NV04_PBUS_PCI_NV_1, saved_pci_nv_1);
 343 #endif
 344
 345         return 0;
 346 }
 347
 348 int
 349 nouveau_mem_init_agp(struct drm_device *dev)
 350 {
 351 #if __OS_HAS_AGP
 352         struct drm_nouveau_private *dev_priv = dev->dev_private;
 353         struct drm_agp_info info;
 354         struct drm_agp_mode mode;
 355         int ret;
 356
 357         if (!dev->agp->acquired) {
 358                 ret = drm_agp_acquire(dev);
 359                 if (ret) {
 360                         NV_ERROR(dev, "Unable to acquire AGP: %d\n", ret);
 361                         return ret;
 362                 }
 363         }
 364
 365         nouveau_mem_reset_agp(dev);
 366
 367         ret = drm_agp_info(dev, &info);
 368         if (ret) {
 369                 NV_ERROR(dev, "Unable to get AGP info: %d\n", ret);
 370                 return ret;
 371         }
 372
 373         /* see agp.h for the AGPSTAT_* modes available */
 374         mode.mode = get_agp_mode(dev, info.mode);
 375         ret = drm_agp_enable(dev, mode);
 376         if (ret) {
 377                 NV_ERROR(dev, "Unable to enable AGP: %d\n", ret);
 378                 return ret;
 379         }
 380
 381         dev_priv->gart_info.type        = NOUVEAU_GART_AGP;
 382         dev_priv->gart_info.aper_base   = info.aperture_base;
 383         dev_priv->gart_info.aper_size   = info.aperture_size;
 384 #endif
 385         return 0;
 386 }
 387
 388 int
 389 nouveau_mem_vram_init(struct drm_device *dev)
 390 {
 391         struct drm_nouveau_private *dev_priv = dev->dev_private;
 392         struct ttm_bo_device *bdev = &dev_priv->ttm.bdev;
 393         int ret, dma_bits;
 394
 395         dma_bits = 32;
 396         if (dev_priv->card_type >= NV_50) {
 397                 if (pci_dma_supported(dev->pdev, DMA_BIT_MASK(40)))
 398                         dma_bits = 40;
 399         } else
 400         if (drm_pci_device_is_pcie(dev) &&
 401             dev_priv->chipset != 0x40 &&
 402             dev_priv->chipset != 0x45) {
 403                 if (pci_dma_supported(dev->pdev, DMA_BIT_MASK(39)))
 404                         dma_bits = 39;
 405         }
 406
 407         ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(dma_bits));
 408         if (ret)
 409                 return ret;
 410
 411         dev_priv->fb_phys = pci_resource_start(dev->pdev, 1);
 412
 413         ret = nouveau_ttm_global_init(dev_priv);
 414         if (ret)
 415                 return ret;
 416
 417         ret = ttm_bo_device_init(&dev_priv->ttm.bdev,
 418                                  dev_priv->ttm.bo_global_ref.ref.object,
 419                                  &nouveau_bo_driver, DRM_FILE_PAGE_OFFSET,
 420                                  dma_bits <= 32 ? true : false);
 421         if (ret) {
 422                 NV_ERROR(dev, "Error initialising bo driver: %d\n", ret);
 423                 return ret;
 424         }
 425
 426         /* reserve space at end of VRAM for PRAMIN */
 427         if (dev_priv->chipset == 0x40 || dev_priv->chipset == 0x47 ||
 428             dev_priv->chipset == 0x49 || dev_priv->chipset == 0x4b)
 429                 dev_priv->ramin_rsvd_vram = (2 * 1024 * 1024);
 430         else
 431         if (dev_priv->card_type >= NV_40)
 432                 dev_priv->ramin_rsvd_vram = (1 * 1024 * 1024);
 433         else
 434                 dev_priv->ramin_rsvd_vram = (512 * 1024);
 435
 436         ret = dev_priv->engine.vram.init(dev);
 437         if (ret)
 438                 return ret;
 439
 440         NV_INFO(dev, "Detected %dMiB VRAM\n", (int)(dev_priv->vram_size >> 20));
 441         if (dev_priv->vram_sys_base) {
 442                 NV_INFO(dev, "Stolen system memory at: 0x%010llx\n",
 443                         dev_priv->vram_sys_base);
 444         }
 445
 446         dev_priv->fb_available_size = dev_priv->vram_size;
 447         dev_priv->fb_mappable_pages = dev_priv->fb_available_size;
 448         if (dev_priv->fb_mappable_pages > pci_resource_len(dev->pdev, 1))
 449                 dev_priv->fb_mappable_pages = pci_resource_len(dev->pdev, 1);
 450         dev_priv->fb_mappable_pages >>= PAGE_SHIFT;
 451
 452         dev_priv->fb_available_size -= dev_priv->ramin_rsvd_vram;
 453         dev_priv->fb_aper_free = dev_priv->fb_available_size;
 454
 455         /* mappable vram */
 456         ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
 457                              dev_priv->fb_available_size >> PAGE_SHIFT);
 458         if (ret) {
 459                 NV_ERROR(dev, "Failed VRAM mm init: %d\n", ret);
 460                 return ret;
 461         }
 462
 463         if (dev_priv->card_type < NV_50) {
 464                 ret = nouveau_bo_new(dev, NULL, 256*1024, 0, TTM_PL_FLAG_VRAM,
 465                                      0, 0, &dev_priv->vga_ram);
 466                 if (ret == 0)
 467                         ret = nouveau_bo_pin(dev_priv->vga_ram,
 468                                              TTM_PL_FLAG_VRAM);
 469
 470                 if (ret) {
 471                         NV_WARN(dev, "failed to reserve VGA memory\n");
 472                         nouveau_bo_ref(NULL, &dev_priv->vga_ram);
 473                 }
 474         }
 475
 476         dev_priv->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 1),
 477                                          pci_resource_len(dev->pdev, 1),
 478                                          DRM_MTRR_WC);
 479         return 0;
 480 }
 481
 482 int
 483 nouveau_mem_gart_init(struct drm_device *dev)
 484 {
 485         struct drm_nouveau_private *dev_priv = dev->dev_private;
 486         struct ttm_bo_device *bdev = &dev_priv->ttm.bdev;
 487         int ret;
 488
 489         dev_priv->gart_info.type = NOUVEAU_GART_NONE;
 490
 491 #if !defined(__powerpc__) && !defined(__ia64__)
 492         if (drm_pci_device_is_agp(dev) && dev->agp && nouveau_agpmode) {
 493                 ret = nouveau_mem_init_agp(dev);
 494                 if (ret)
 495                         NV_ERROR(dev, "Error initialising AGP: %d\n", ret);
 496         }
 497 #endif
 498
 499         if (dev_priv->gart_info.type == NOUVEAU_GART_NONE) {
 500                 ret = nouveau_sgdma_init(dev);
 501                 if (ret) {
 502                         NV_ERROR(dev, "Error initialising PCI(E): %d\n", ret);
 503                         return ret;
 504                 }
 505         }
 506
 507         NV_INFO(dev, "%d MiB GART (aperture)\n",
 508                 (int)(dev_priv->gart_info.aper_size >> 20));
 509         dev_priv->gart_info.aper_free = dev_priv->gart_info.aper_size;
 510
 511         ret = ttm_bo_init_mm(bdev, TTM_PL_TT,
 512                              dev_priv->gart_info.aper_size >> PAGE_SHIFT);
 513         if (ret) {
 514                 NV_ERROR(dev, "Failed TT mm init: %d\n", ret);
 515                 return ret;
 516         }
 517
 518         return 0;
 519 }
 520
 521 void
 522 nouveau_mem_timing_init(struct drm_device *dev)
 523 {
 524         /* cards < NVC0 only */
 525         struct drm_nouveau_private *dev_priv = dev->dev_private;
 526         struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
 527         struct nouveau_pm_memtimings *memtimings = &pm->memtimings;
 528         struct nvbios *bios = &dev_priv->vbios;
 529         struct bit_entry P;
 530         u8 tUNK_0, tUNK_1, tUNK_2;
 531         u8 tRP;         /* Byte 3 */
 532         u8 tRAS;        /* Byte 5 */
 533         u8 tRFC;        /* Byte 7 */
 534         u8 tRC;         /* Byte 9 */
 535         u8 tUNK_10, tUNK_11, tUNK_12, tUNK_13, tUNK_14;
 536         u8 tUNK_18, tUNK_19, tUNK_20, tUNK_21;
 537         u8 *mem = NULL, *entry;
 538         int i, recordlen, entries;
 539
 540         if (bios->type == NVBIOS_BIT) {
 541                 if (bit_table(dev, 'P', &P))
 542                         return;
 543
 544                 if (P.version == 1)
 545                         mem = ROMPTR(bios, P.data[4]);
 546                 else
 547                 if (P.version == 2)
 548                         mem = ROMPTR(bios, P.data[8]);
 549                 else {
 550                         NV_WARN(dev, "unknown mem for BIT P %d\n", P.version);
 551                 }
 552         } else {
 553                 NV_DEBUG(dev, "BMP version too old for memory\n");
 554                 return;
 555         }
 556
 557         if (!mem) {
 558                 NV_DEBUG(dev, "memory timing table pointer invalid\n");
 559                 return;
 560         }
 561
 562         if (mem[0] != 0x10) {
 563                 NV_WARN(dev, "memory timing table 0x%02x unknown\n", mem[0]);
 564                 return;
 565         }
 566
 567         /* validate record length */
 568         entries   = mem[2];
 569         recordlen = mem[3];
 570         if (recordlen < 15) {
 571                 NV_ERROR(dev, "mem timing table length unknown: %d\n", mem[3]);
 572                 return;
 573         }
 574
 575         /* parse vbios entries into common format */
 576         memtimings->timing =
 577                 kcalloc(entries, sizeof(*memtimings->timing), GFP_KERNEL);
 578         if (!memtimings->timing)
 579                 return;
 580
 581         entry = mem + mem[1];
 582         for (i = 0; i < entries; i++, entry += recordlen) {
 583                 struct nouveau_pm_memtiming *timing = &pm->memtimings.timing[i];
 584                 if (entry[0] == 0)
 585                         continue;
 586
 587                 tUNK_18 = 1;
 588                 tUNK_19 = 1;
 589                 tUNK_20 = 0;
 590                 tUNK_21 = 0;
 591                 switch (min(recordlen, 22)) {
 592                 case 22:
 593                         tUNK_21 = entry[21];
 594                 case 21:
 595                         tUNK_20 = entry[20];
 596                 case 20:
 597                         tUNK_19 = entry[19];
 598                 case 19:
 599                         tUNK_18 = entry[18];
 600                 default:
 601                         tUNK_0  = entry[0];
 602                         tUNK_1  = entry[1];
 603                         tUNK_2  = entry[2];
 604                         tRP     = entry[3];
 605                         tRAS    = entry[5];
 606                         tRFC    = entry[7];
 607                         tRC     = entry[9];
 608                         tUNK_10 = entry[10];
 609                         tUNK_11 = entry[11];
 610                         tUNK_12 = entry[12];
 611                         tUNK_13 = entry[13];
 612                         tUNK_14 = entry[14];
 613                         break;
 614                 }
 615
 616                 timing->reg_100220 = (tRC << 24 | tRFC << 16 | tRAS << 8 | tRP);
 617
 618                 /* XXX: I don't trust the -1's and +1's... they must come
 619                  *      from somewhere! */
 620                 timing->reg_100224 = ((tUNK_0 + tUNK_19 + 1) << 24 |
 621                                       tUNK_18 << 16 |
 622                                       (tUNK_1 + tUNK_19 + 1) << 8 |
 623                                       (tUNK_2 - 1));
 624
 625                 timing->reg_100228 = (tUNK_12 << 16 | tUNK_11 << 8 | tUNK_10);
 626                 if(recordlen > 19) {
 627                         timing->reg_100228 += (tUNK_19 - 1) << 24;
 628                 }/* I cannot back-up this else-statement right now
 629                          else {
 630                         timing->reg_100228 += tUNK_12 << 24;
 631                 }*/
 632
 633                 /* XXX: reg_10022c */
 634                 timing->reg_10022c = tUNK_2 - 1;
 635
 636                 timing->reg_100230 = (tUNK_20 << 24 | tUNK_21 << 16 |
 637                                       tUNK_13 << 8  | tUNK_13);
 638
 639                 /* XXX: +6? */
 640                 timing->reg_100234 = (tRAS << 24 | (tUNK_19 + 6) << 8 | tRC);
 641                 timing->reg_100234 += max(tUNK_10,tUNK_11) << 16;
 642
 643                 /* XXX; reg_100238, reg_10023c
 644                  * reg: 0x00??????
 645                  * reg_10023c:
 646                  *      0 for pre-NV50 cards
 647                  *      0x????0202 for NV50+ cards (empirical evidence) */
 648                 if(dev_priv->card_type >= NV_50) {
 649                         timing->reg_10023c = 0x202;
 650                 }
 651
 652                 NV_DEBUG(dev, "Entry %d: 220: %08x %08x %08x %08x\n", i,
 653                          timing->reg_100220, timing->reg_100224,
 654                          timing->reg_100228, timing->reg_10022c);
 655                 NV_DEBUG(dev, "         230: %08x %08x %08x %08x\n",
 656                          timing->reg_100230, timing->reg_100234,
 657                          timing->reg_100238, timing->reg_10023c);
 658         }
 659
 660         memtimings->nr_timing  = entries;
 661         memtimings->supported = true;
 662 }
 663
 664 void
 665 nouveau_mem_timing_fini(struct drm_device *dev)
 666 {
 667         struct drm_nouveau_private *dev_priv = dev->dev_private;
 668         struct nouveau_pm_memtimings *mem = &dev_priv->engine.pm.memtimings;
 669
 670         kfree(mem->timing);
 671 }
 672
 673 static int
 674 nouveau_vram_manager_init(struct ttm_mem_type_manager *man, unsigned long p_size)
 675 {
 676         struct drm_nouveau_private *dev_priv = nouveau_bdev(man->bdev);
 677         struct nouveau_mm *mm;
 678         u64 size, block, rsvd;
 679         int ret;
 680
 681         rsvd  = (256 * 1024); /* vga memory */
 682         size  = (p_size << PAGE_SHIFT) - rsvd;
 683         block = dev_priv->vram_rblock_size;
 684
 685         ret = nouveau_mm_init(&mm, rsvd >> 12, size >> 12, block >> 12);
 686         if (ret)
 687                 return ret;
 688
 689         man->priv = mm;
 690         return 0;
 691 }
 692
 693 static int
 694 nouveau_vram_manager_fini(struct ttm_mem_type_manager *man)
 695 {
 696         struct nouveau_mm *mm = man->priv;
 697         int ret;
 698
 699         ret = nouveau_mm_fini(&mm);
 700         if (ret)
 701                 return ret;
 702
 703         man->priv = NULL;
 704         return 0;
 705 }
 706
 707 static void
 708 nouveau_vram_manager_del(struct ttm_mem_type_manager *man,
 709                          struct ttm_mem_reg *mem)
 710 {
 711         struct drm_nouveau_private *dev_priv = nouveau_bdev(man->bdev);
 712         struct nouveau_vram_engine *vram = &dev_priv->engine.vram;
 713         struct nouveau_mem *node = mem->mm_node;
 714         struct drm_device *dev = dev_priv->dev;
 715
 716         if (node->tmp_vma.node) {
 717                 nouveau_vm_unmap(&node->tmp_vma);
 718                 nouveau_vm_put(&node->tmp_vma);
 719         }
 720
 721         vram->put(dev, (struct nouveau_mem **)&mem->mm_node);
 722 }
 723
 724 static int
 725 nouveau_vram_manager_new(struct ttm_mem_type_manager *man,
 726                          struct ttm_buffer_object *bo,
 727                          struct ttm_placement *placement,
 728                          struct ttm_mem_reg *mem)
 729 {
 730         struct drm_nouveau_private *dev_priv = nouveau_bdev(man->bdev);
 731         struct nouveau_vram_engine *vram = &dev_priv->engine.vram;
 732         struct drm_device *dev = dev_priv->dev;
 733         struct nouveau_bo *nvbo = nouveau_bo(bo);
 734         struct nouveau_mem *node;
 735         u32 size_nc = 0;
 736         int ret;
 737
 738         if (nvbo->tile_flags & NOUVEAU_GEM_TILE_NONCONTIG)
 739                 size_nc = 1 << nvbo->vma.node->type;
 740
 741         ret = vram->get(dev, mem->num_pages << PAGE_SHIFT,
 742                         mem->page_alignment << PAGE_SHIFT, size_nc,
 743                         (nvbo->tile_flags >> 8) & 0x3ff, &node);
 744         if (ret)
 745                 return ret;
 746
 747         node->page_shift = 12;
 748         if (nvbo->vma.node)
 749                 node->page_shift = nvbo->vma.node->type;
 750
 751         mem->mm_node = node;
 752         mem->start   = node->offset >> PAGE_SHIFT;
 753         return 0;
 754 }
 755
 756 void
 757 nouveau_vram_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 758 {
 759         struct nouveau_mm *mm = man->priv;
 760         struct nouveau_mm_node *r;
 761         u32 total = 0, free = 0;
 762
 763         mutex_lock(&mm->mutex);
 764         list_for_each_entry(r, &mm->nodes, nl_entry) {
 765                 printk(KERN_DEBUG "%s %d: 0x%010llx 0x%010llx\n",
 766                        prefix, r->type, ((u64)r->offset << 12),
 767                        (((u64)r->offset + r->length) << 12));
 768
 769                 total += r->length;
 770                 if (!r->type)
 771                         free += r->length;
 772         }
 773         mutex_unlock(&mm->mutex);
 774
 775         printk(KERN_DEBUG "%s  total: 0x%010llx free: 0x%010llx\n",
 776                prefix, (u64)total << 12, (u64)free << 12);
 777         printk(KERN_DEBUG "%s  block: 0x%08x\n",
 778                prefix, mm->block_size << 12);
 779 }
 780
 781 const struct ttm_mem_type_manager_func nouveau_vram_manager = {
 782         nouveau_vram_manager_init,
 783         nouveau_vram_manager_fini,
 784         nouveau_vram_manager_new,
 785         nouveau_vram_manager_del,
 786         nouveau_vram_manager_debug
 787 };
 788
 789 static int
 790 nouveau_gart_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
 791 {
 792         return 0;
 793 }
 794
 795 static int
 796 nouveau_gart_manager_fini(struct ttm_mem_type_manager *man)
 797 {
 798         return 0;
 799 }
 800
 801 static void
 802 nouveau_gart_manager_del(struct ttm_mem_type_manager *man,
 803                          struct ttm_mem_reg *mem)
 804 {
 805         struct nouveau_mem *node = mem->mm_node;
 806
 807         if (node->tmp_vma.node) {
 808                 nouveau_vm_unmap(&node->tmp_vma);
 809                 nouveau_vm_put(&node->tmp_vma);
 810         }
 811         mem->mm_node = NULL;
 812 }
 813
 814 static int
 815 nouveau_gart_manager_new(struct ttm_mem_type_manager *man,
 816                          struct ttm_buffer_object *bo,
 817                          struct ttm_placement *placement,
 818                          struct ttm_mem_reg *mem)
 819 {
 820         struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
 821         struct nouveau_bo *nvbo = nouveau_bo(bo);
 822         struct nouveau_vma *vma = &nvbo->vma;
 823         struct nouveau_vm *vm = vma->vm;
 824         struct nouveau_mem *node;
 825         int ret;
 826
 827         if (unlikely((mem->num_pages << PAGE_SHIFT) >=
 828                      dev_priv->gart_info.aper_size))
 829                 return -ENOMEM;
 830
 831         node = kzalloc(sizeof(*node), GFP_KERNEL);
 832         if (!node)
 833                 return -ENOMEM;
 834
 835         /* This node must be for evicting large-paged VRAM
 836          * to system memory.  Due to a nv50 limitation of
 837          * not being able to mix large/small pages within
 838          * the same PDE, we need to create a temporary
 839          * small-paged VMA for the eviction.
 840          */
 841         if (vma->node->type != vm->spg_shift) {
 842                 ret = nouveau_vm_get(vm, (u64)vma->node->length << 12,
 843                                      vm->spg_shift, NV_MEM_ACCESS_RW,
 844                                      &node->tmp_vma);
 845                 if (ret) {
 846                         kfree(node);
 847                         return ret;
 848                 }
 849         }
 850
 851         node->page_shift = nvbo->vma.node->type;
 852         mem->mm_node = node;
 853         mem->start   = 0;
 854         return 0;
 855 }
 856
 857 void
 858 nouveau_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 859 {
 860 }
 861
 862 const struct ttm_mem_type_manager_func nouveau_gart_manager = {
 863         nouveau_gart_manager_init,
 864         nouveau_gart_manager_fini,
 865         nouveau_gart_manager_new,
 866         nouveau_gart_manager_del,
 867         nouveau_gart_manager_debug
 868 };