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 #include "nouveau_drv.h"
  37
  38 static struct mem_block *
  39 split_block(struct mem_block *p, uint64_t start, uint64_t size,
  40             struct drm_file *file_priv)
  41 {
  42         /* Maybe cut off the start of an existing block */
  43         if (start > p->start) {
  44                 struct mem_block *newblock =
  45                         kmalloc(sizeof(*newblock), GFP_KERNEL);
  46                 if (!newblock)
  47                         goto out;
  48                 newblock->start = start;
  49                 newblock->size = p->size - (start - p->start);
  50                 newblock->file_priv = NULL;
  51                 newblock->next = p->next;
  52                 newblock->prev = p;
  53                 p->next->prev = newblock;
  54                 p->next = newblock;
  55                 p->size -= newblock->size;
  56                 p = newblock;
  57         }
  58
  59         /* Maybe cut off the end of an existing block */
  60         if (size < p->size) {
  61                 struct mem_block *newblock =
  62                         kmalloc(sizeof(*newblock), GFP_KERNEL);
  63                 if (!newblock)
  64                         goto out;
  65                 newblock->start = start + size;
  66                 newblock->size = p->size - size;
  67                 newblock->file_priv = NULL;
  68                 newblock->next = p->next;
  69                 newblock->prev = p;
  70                 p->next->prev = newblock;
  71                 p->next = newblock;
  72                 p->size = size;
  73         }
  74
  75 out:
  76         /* Our block is in the middle */
  77         p->file_priv = file_priv;
  78         return p;
  79 }
  80
  81 struct mem_block *
  82 nouveau_mem_alloc_block(struct mem_block *heap, uint64_t size,
  83                         int align2, struct drm_file *file_priv, int tail)
  84 {
  85         struct mem_block *p;
  86         uint64_t mask = (1 << align2) - 1;
  87
  88         if (!heap)
  89                 return NULL;
  90
  91         if (tail) {
  92                 list_for_each_prev(p, heap) {
  93                         uint64_t start = ((p->start + p->size) - size) & ~mask;
  94
  95                         if (p->file_priv == NULL && start >= p->start &&
  96                             start + size <= p->start + p->size)
  97                                 return split_block(p, start, size, file_priv);
  98                 }
  99         } else {
 100                 list_for_each(p, heap) {
 101                         uint64_t start = (p->start + mask) & ~mask;
 102
 103                         if (p->file_priv == NULL &&
 104                             start + size <= p->start + p->size)
 105                                 return split_block(p, start, size, file_priv);
 106                 }
 107         }
 108
 109         return NULL;
 110 }
 111
 112 void nouveau_mem_free_block(struct mem_block *p)
 113 {
 114         p->file_priv = NULL;
 115
 116         /* Assumes a single contiguous range.  Needs a special file_priv in
 117          * 'heap' to stop it being subsumed.
 118          */
 119         if (p->next->file_priv == NULL) {
 120                 struct mem_block *q = p->next;
 121                 p->size += q->size;
 122                 p->next = q->next;
 123                 p->next->prev = p;
 124                 kfree(q);
 125         }
 126
 127         if (p->prev->file_priv == NULL) {
 128                 struct mem_block *q = p->prev;
 129                 q->size += p->size;
 130                 q->next = p->next;
 131                 q->next->prev = q;
 132                 kfree(p);
 133         }
 134 }
 135
 136 /* Initialize.  How to check for an uninitialized heap?
 137  */
 138 int nouveau_mem_init_heap(struct mem_block **heap, uint64_t start,
 139                           uint64_t size)
 140 {
 141         struct mem_block *blocks = kmalloc(sizeof(*blocks), GFP_KERNEL);
 142
 143         if (!blocks)
 144                 return -ENOMEM;
 145
 146         *heap = kmalloc(sizeof(**heap), GFP_KERNEL);
 147         if (!*heap) {
 148                 kfree(blocks);
 149                 return -ENOMEM;
 150         }
 151
 152         blocks->start = start;
 153         blocks->size = size;
 154         blocks->file_priv = NULL;
 155         blocks->next = blocks->prev = *heap;
 156
 157         memset(*heap, 0, sizeof(**heap));
 158         (*heap)->file_priv = (struct drm_file *) -1;
 159         (*heap)->next = (*heap)->prev = blocks;
 160         return 0;
 161 }
 162
 163 /*
 164  * Free all blocks associated with the releasing file_priv
 165  */
 166 void nouveau_mem_release(struct drm_file *file_priv, struct mem_block *heap)
 167 {
 168         struct mem_block *p;
 169
 170         if (!heap || !heap->next)
 171                 return;
 172
 173         list_for_each(p, heap) {
 174                 if (p->file_priv == file_priv)
 175                         p->file_priv = NULL;
 176         }
 177
 178         /* Assumes a single contiguous range.  Needs a special file_priv in
 179          * 'heap' to stop it being subsumed.
 180          */
 181         list_for_each(p, heap) {
 182                 while ((p->file_priv == NULL) &&
 183                                         (p->next->file_priv == NULL) &&
 184                                         (p->next != heap)) {
 185                         struct mem_block *q = p->next;
 186                         p->size += q->size;
 187                         p->next = q->next;
 188                         p->next->prev = p;
 189                         kfree(q);
 190                 }
 191         }
 192 }
 193
 194 /*
 195  * NV10-NV40 tiling helpers
 196  */
 197
 198 static void
 199 nv10_mem_set_region_tiling(struct drm_device *dev, int i, uint32_t addr,
 200                            uint32_t size, uint32_t pitch)
 201 {
 202         struct drm_nouveau_private *dev_priv = dev->dev_private;
 203         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 204         struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
 205         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 206         struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
 207
 208         tile->addr = addr;
 209         tile->size = size;
 210         tile->used = !!pitch;
 211         nouveau_fence_unref((void **)&tile->fence);
 212
 213         if (!pfifo->cache_flush(dev))
 214                 return;
 215
 216         pfifo->reassign(dev, false);
 217         pfifo->cache_flush(dev);
 218         pfifo->cache_pull(dev, false);
 219
 220         nouveau_wait_for_idle(dev);
 221
 222         pgraph->set_region_tiling(dev, i, addr, size, pitch);
 223         pfb->set_region_tiling(dev, i, addr, size, pitch);
 224
 225         pfifo->cache_pull(dev, true);
 226         pfifo->reassign(dev, true);
 227 }
 228
 229 struct nouveau_tile_reg *
 230 nv10_mem_set_tiling(struct drm_device *dev, uint32_t addr, uint32_t size,
 231                     uint32_t pitch)
 232 {
 233         struct drm_nouveau_private *dev_priv = dev->dev_private;
 234         struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
 235         struct nouveau_tile_reg *tile = dev_priv->tile.reg, *found = NULL;
 236         int i;
 237
 238         spin_lock(&dev_priv->tile.lock);
 239
 240         for (i = 0; i < pfb->num_tiles; i++) {
 241                 if (tile[i].used)
 242                         /* Tile region in use. */
 243                         continue;
 244
 245                 if (tile[i].fence &&
 246                     !nouveau_fence_signalled(tile[i].fence, NULL))
 247                         /* Pending tile region. */
 248                         continue;
 249
 250                 if (max(tile[i].addr, addr) <
 251                     min(tile[i].addr + tile[i].size, addr + size))
 252                         /* Kill an intersecting tile region. */
 253                         nv10_mem_set_region_tiling(dev, i, 0, 0, 0);
 254
 255                 if (pitch && !found) {
 256                         /* Free tile region. */
 257                         nv10_mem_set_region_tiling(dev, i, addr, size, pitch);
 258                         found = &tile[i];
 259                 }
 260         }
 261
 262         spin_unlock(&dev_priv->tile.lock);
 263
 264         return found;
 265 }
 266
 267 void
 268 nv10_mem_expire_tiling(struct drm_device *dev, struct nouveau_tile_reg *tile,
 269                        struct nouveau_fence *fence)
 270 {
 271         if (fence) {
 272                 /* Mark it as pending. */
 273                 tile->fence = fence;
 274                 nouveau_fence_ref(fence);
 275         }
 276
 277         tile->used = false;
 278 }
 279
 280 /*
 281  * NV50 VM helpers
 282  */
 283 int
 284 nv50_mem_vm_bind_linear(struct drm_device *dev, uint64_t virt, uint32_t size,
 285                         uint32_t flags, uint64_t phys)
 286 {
 287         struct drm_nouveau_private *dev_priv = dev->dev_private;
 288         struct nouveau_gpuobj *pgt;
 289         unsigned block;
 290         int i;
 291
 292         virt = ((virt - dev_priv->vm_vram_base) >> 16) << 1;
 293         size = (size >> 16) << 1;
 294
 295         phys |= ((uint64_t)flags << 32);
 296         phys |= 1;
 297         if (dev_priv->vram_sys_base) {
 298                 phys += dev_priv->vram_sys_base;
 299                 phys |= 0x30;
 300         }
 301
 302         dev_priv->engine.instmem.prepare_access(dev, true);
 303         while (size) {
 304                 unsigned offset_h = upper_32_bits(phys);
 305                 unsigned offset_l = lower_32_bits(phys);
 306                 unsigned pte, end;
 307
 308                 for (i = 7; i >= 0; i--) {
 309                         block = 1 << (i + 1);
 310                         if (size >= block && !(virt & (block - 1)))
 311                                 break;
 312                 }
 313                 offset_l |= (i << 7);
 314
 315                 phys += block << 15;
 316                 size -= block;
 317
 318                 while (block) {
 319                         pgt = dev_priv->vm_vram_pt[virt >> 14];
 320                         pte = virt & 0x3ffe;
 321
 322                         end = pte + block;
 323                         if (end > 16384)
 324                                 end = 16384;
 325                         block -= (end - pte);
 326                         virt  += (end - pte);
 327
 328                         while (pte < end) {
 329                                 nv_wo32(dev, pgt, pte++, offset_l);
 330                                 nv_wo32(dev, pgt, pte++, offset_h);
 331                         }
 332                 }
 333         }
 334         dev_priv->engine.instmem.finish_access(dev);
 335
 336         nv_wr32(dev, 0x100c80, 0x00050001);
 337         if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
 338                 NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
 339                 NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
 340                 return -EBUSY;
 341         }
 342
 343         nv_wr32(dev, 0x100c80, 0x00000001);
 344         if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
 345                 NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
 346                 NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
 347                 return -EBUSY;
 348         }
 349
 350         nv_wr32(dev, 0x100c80, 0x00040001);
 351         if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
 352                 NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
 353                 NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
 354                 return -EBUSY;
 355         }
 356
 357         nv_wr32(dev, 0x100c80, 0x00060001);
 358         if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
 359                 NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
 360                 NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
 361                 return -EBUSY;
 362         }
 363
 364         return 0;
 365 }
 366
 367 void
 368 nv50_mem_vm_unbind(struct drm_device *dev, uint64_t virt, uint32_t size)
 369 {
 370         struct drm_nouveau_private *dev_priv = dev->dev_private;
 371         struct nouveau_gpuobj *pgt;
 372         unsigned pages, pte, end;
 373
 374         virt -= dev_priv->vm_vram_base;
 375         pages = (size >> 16) << 1;
 376
 377         dev_priv->engine.instmem.prepare_access(dev, true);
 378         while (pages) {
 379                 pgt = dev_priv->vm_vram_pt[virt >> 29];
 380                 pte = (virt & 0x1ffe0000ULL) >> 15;
 381
 382                 end = pte + pages;
 383                 if (end > 16384)
 384                         end = 16384;
 385                 pages -= (end - pte);
 386                 virt  += (end - pte) << 15;
 387
 388                 while (pte < end)
 389                         nv_wo32(dev, pgt, pte++, 0);
 390         }
 391         dev_priv->engine.instmem.finish_access(dev);
 392
 393         nv_wr32(dev, 0x100c80, 0x00050001);
 394         if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
 395                 NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
 396                 NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
 397                 return;
 398         }
 399
 400         nv_wr32(dev, 0x100c80, 0x00000001);
 401         if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
 402                 NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
 403                 NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
 404                 return;
 405         }
 406
 407         nv_wr32(dev, 0x100c80, 0x00040001);
 408         if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
 409                 NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
 410                 NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
 411                 return;
 412         }
 413
 414         nv_wr32(dev, 0x100c80, 0x00060001);
 415         if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
 416                 NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
 417                 NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
 418         }
 419 }
 420
 421 /*
 422  * Cleanup everything
 423  */
 424 void nouveau_mem_takedown(struct mem_block **heap)
 425 {
 426         struct mem_block *p;
 427
 428         if (!*heap)
 429                 return;
 430
 431         for (p = (*heap)->next; p != *heap;) {
 432                 struct mem_block *q = p;
 433                 p = p->next;
 434                 kfree(q);
 435         }
 436
 437         kfree(*heap);
 438         *heap = NULL;
 439 }
 440
 441 void nouveau_mem_close(struct drm_device *dev)
 442 {
 443         struct drm_nouveau_private *dev_priv = dev->dev_private;
 444
 445         nouveau_bo_unpin(dev_priv->vga_ram);
 446         nouveau_bo_ref(NULL, &dev_priv->vga_ram);
 447
 448         ttm_bo_device_release(&dev_priv->ttm.bdev);
 449
 450         nouveau_ttm_global_release(dev_priv);
 451
 452         if (drm_core_has_AGP(dev) && dev->agp &&
 453             drm_core_check_feature(dev, DRIVER_MODESET)) {
 454                 struct drm_agp_mem *entry, *tempe;
 455
 456                 /* Remove AGP resources, but leave dev->agp
 457                    intact until drv_cleanup is called. */
 458                 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
 459                         if (entry->bound)
 460                                 drm_unbind_agp(entry->memory);
 461                         drm_free_agp(entry->memory, entry->pages);
 462                         kfree(entry);
 463                 }
 464                 INIT_LIST_HEAD(&dev->agp->memory);
 465
 466                 if (dev->agp->acquired)
 467                         drm_agp_release(dev);
 468
 469                 dev->agp->acquired = 0;
 470                 dev->agp->enabled = 0;
 471         }
 472
 473         if (dev_priv->fb_mtrr) {
 474                 drm_mtrr_del(dev_priv->fb_mtrr, drm_get_resource_start(dev, 1),
 475                              drm_get_resource_len(dev, 1), DRM_MTRR_WC);
 476                 dev_priv->fb_mtrr = 0;
 477         }
 478 }
 479
 480 static uint32_t
 481 nouveau_mem_detect_nv04(struct drm_device *dev)
 482 {
 483         uint32_t boot0 = nv_rd32(dev, NV03_BOOT_0);
 484
 485         if (boot0 & 0x00000100)
 486                 return (((boot0 >> 12) & 0xf) * 2 + 2) * 1024 * 1024;
 487
 488         switch (boot0 & NV03_BOOT_0_RAM_AMOUNT) {
 489         case NV04_BOOT_0_RAM_AMOUNT_32MB:
 490                 return 32 * 1024 * 1024;
 491         case NV04_BOOT_0_RAM_AMOUNT_16MB:
 492                 return 16 * 1024 * 1024;
 493         case NV04_BOOT_0_RAM_AMOUNT_8MB:
 494                 return 8 * 1024 * 1024;
 495         case NV04_BOOT_0_RAM_AMOUNT_4MB:
 496                 return 4 * 1024 * 1024;
 497         }
 498
 499         return 0;
 500 }
 501
 502 static uint32_t
 503 nouveau_mem_detect_nforce(struct drm_device *dev)
 504 {
 505         struct drm_nouveau_private *dev_priv = dev->dev_private;
 506         struct pci_dev *bridge;
 507         uint32_t mem;
 508
 509         bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 1));
 510         if (!bridge) {
 511                 NV_ERROR(dev, "no bridge device\n");
 512                 return 0;
 513         }
 514
 515         if (dev_priv->flags & NV_NFORCE) {
 516                 pci_read_config_dword(bridge, 0x7C, &mem);
 517                 return (uint64_t)(((mem >> 6) & 31) + 1)*1024*1024;
 518         } else
 519         if (dev_priv->flags & NV_NFORCE2) {
 520                 pci_read_config_dword(bridge, 0x84, &mem);
 521                 return (uint64_t)(((mem >> 4) & 127) + 1)*1024*1024;
 522         }
 523
 524         NV_ERROR(dev, "impossible!\n");
 525         return 0;
 526 }
 527
 528 /* returns the amount of FB ram in bytes */
 529 int
 530 nouveau_mem_detect(struct drm_device *dev)
 531 {
 532         struct drm_nouveau_private *dev_priv = dev->dev_private;
 533
 534         if (dev_priv->card_type == NV_04) {
 535                 dev_priv->vram_size = nouveau_mem_detect_nv04(dev);
 536         } else
 537         if (dev_priv->flags & (NV_NFORCE | NV_NFORCE2)) {
 538                 dev_priv->vram_size = nouveau_mem_detect_nforce(dev);
 539         } else {
 540                 dev_priv->vram_size  = nv_rd32(dev, NV04_FIFO_DATA);
 541                 dev_priv->vram_size &= NV10_FIFO_DATA_RAM_AMOUNT_MB_MASK;
 542                 if (dev_priv->chipset == 0xaa || dev_priv->chipset == 0xac)
 543                         dev_priv->vram_sys_base = nv_rd32(dev, 0x100e10);
 544                         dev_priv->vram_sys_base <<= 12;
 545         }
 546
 547         NV_INFO(dev, "Detected %dMiB VRAM\n", (int)(dev_priv->vram_size >> 20));
 548         if (dev_priv->vram_sys_base) {
 549                 NV_INFO(dev, "Stolen system memory at: 0x%010llx\n",
 550                         dev_priv->vram_sys_base);
 551         }
 552
 553         if (dev_priv->vram_size)
 554                 return 0;
 555         return -ENOMEM;
 556 }
 557
 558 #if __OS_HAS_AGP
 559 static void nouveau_mem_reset_agp(struct drm_device *dev)
 560 {
 561         uint32_t saved_pci_nv_1, saved_pci_nv_19, pmc_enable;
 562
 563         saved_pci_nv_1 = nv_rd32(dev, NV04_PBUS_PCI_NV_1);
 564         saved_pci_nv_19 = nv_rd32(dev, NV04_PBUS_PCI_NV_19);
 565
 566         /* clear busmaster bit */
 567         nv_wr32(dev, NV04_PBUS_PCI_NV_1, saved_pci_nv_1 & ~0x4);
 568         /* clear SBA and AGP bits */
 569         nv_wr32(dev, NV04_PBUS_PCI_NV_19, saved_pci_nv_19 & 0xfffff0ff);
 570
 571         /* power cycle pgraph, if enabled */
 572         pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE);
 573         if (pmc_enable & NV_PMC_ENABLE_PGRAPH) {
 574                 nv_wr32(dev, NV03_PMC_ENABLE,
 575                                 pmc_enable & ~NV_PMC_ENABLE_PGRAPH);
 576                 nv_wr32(dev, NV03_PMC_ENABLE, nv_rd32(dev, NV03_PMC_ENABLE) |
 577                                 NV_PMC_ENABLE_PGRAPH);
 578         }
 579
 580         /* and restore (gives effect of resetting AGP) */
 581         nv_wr32(dev, NV04_PBUS_PCI_NV_19, saved_pci_nv_19);
 582         nv_wr32(dev, NV04_PBUS_PCI_NV_1, saved_pci_nv_1);
 583 }
 584 #endif
 585
 586 int
 587 nouveau_mem_init_agp(struct drm_device *dev)
 588 {
 589 #if __OS_HAS_AGP
 590         struct drm_nouveau_private *dev_priv = dev->dev_private;
 591         struct drm_agp_info info;
 592         struct drm_agp_mode mode;
 593         int ret;
 594
 595         if (nouveau_noagp)
 596                 return 0;
 597
 598         nouveau_mem_reset_agp(dev);
 599
 600         if (!dev->agp->acquired) {
 601                 ret = drm_agp_acquire(dev);
 602                 if (ret) {
 603                         NV_ERROR(dev, "Unable to acquire AGP: %d\n", ret);
 604                         return ret;
 605                 }
 606         }
 607
 608         ret = drm_agp_info(dev, &info);
 609         if (ret) {
 610                 NV_ERROR(dev, "Unable to get AGP info: %d\n", ret);
 611                 return ret;
 612         }
 613
 614         /* see agp.h for the AGPSTAT_* modes available */
 615         mode.mode = info.mode;
 616         ret = drm_agp_enable(dev, mode);
 617         if (ret) {
 618                 NV_ERROR(dev, "Unable to enable AGP: %d\n", ret);
 619                 return ret;
 620         }
 621
 622         dev_priv->gart_info.type        = NOUVEAU_GART_AGP;
 623         dev_priv->gart_info.aper_base   = info.aperture_base;
 624         dev_priv->gart_info.aper_size   = info.aperture_size;
 625 #endif
 626         return 0;
 627 }
 628
 629 int
 630 nouveau_mem_init(struct drm_device *dev)
 631 {
 632         struct drm_nouveau_private *dev_priv = dev->dev_private;
 633         struct ttm_bo_device *bdev = &dev_priv->ttm.bdev;
 634         int ret, dma_bits = 32;
 635
 636         dev_priv->fb_phys = drm_get_resource_start(dev, 1);
 637         dev_priv->gart_info.type = NOUVEAU_GART_NONE;
 638
 639         if (dev_priv->card_type >= NV_50 &&
 640             pci_dma_supported(dev->pdev, DMA_BIT_MASK(40)))
 641                 dma_bits = 40;
 642
 643         ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(dma_bits));
 644         if (ret) {
 645                 NV_ERROR(dev, "Error setting DMA mask: %d\n", ret);
 646                 return ret;
 647         }
 648
 649         ret = nouveau_ttm_global_init(dev_priv);
 650         if (ret)
 651                 return ret;
 652
 653         ret = ttm_bo_device_init(&dev_priv->ttm.bdev,
 654                                  dev_priv->ttm.bo_global_ref.ref.object,
 655                                  &nouveau_bo_driver, DRM_FILE_PAGE_OFFSET,
 656                                  dma_bits <= 32 ? true : false);
 657         if (ret) {
 658                 NV_ERROR(dev, "Error initialising bo driver: %d\n", ret);
 659                 return ret;
 660         }
 661
 662         INIT_LIST_HEAD(&dev_priv->ttm.bo_list);
 663         spin_lock_init(&dev_priv->ttm.bo_list_lock);
 664         spin_lock_init(&dev_priv->tile.lock);
 665
 666         dev_priv->fb_available_size = dev_priv->vram_size;
 667         dev_priv->fb_mappable_pages = dev_priv->fb_available_size;
 668         if (dev_priv->fb_mappable_pages > drm_get_resource_len(dev, 1))
 669                 dev_priv->fb_mappable_pages = drm_get_resource_len(dev, 1);
 670         dev_priv->fb_mappable_pages >>= PAGE_SHIFT;
 671
 672         /* remove reserved space at end of vram from available amount */
 673         dev_priv->fb_available_size -= dev_priv->ramin_rsvd_vram;
 674         dev_priv->fb_aper_free = dev_priv->fb_available_size;
 675
 676         /* mappable vram */
 677         ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
 678                              dev_priv->fb_available_size >> PAGE_SHIFT);
 679         if (ret) {
 680                 NV_ERROR(dev, "Failed VRAM mm init: %d\n", ret);
 681                 return ret;
 682         }
 683
 684         ret = nouveau_bo_new(dev, NULL, 256*1024, 0, TTM_PL_FLAG_VRAM,
 685                              0, 0, true, true, &dev_priv->vga_ram);
 686         if (ret == 0)
 687                 ret = nouveau_bo_pin(dev_priv->vga_ram, TTM_PL_FLAG_VRAM);
 688         if (ret) {
 689                 NV_WARN(dev, "failed to reserve VGA memory\n");
 690                 nouveau_bo_ref(NULL, &dev_priv->vga_ram);
 691         }
 692
 693         /* GART */
 694 #if !defined(__powerpc__) && !defined(__ia64__)
 695         if (drm_device_is_agp(dev) && dev->agp) {
 696                 ret = nouveau_mem_init_agp(dev);
 697                 if (ret)
 698                         NV_ERROR(dev, "Error initialising AGP: %d\n", ret);
 699         }
 700 #endif
 701
 702         if (dev_priv->gart_info.type == NOUVEAU_GART_NONE) {
 703                 ret = nouveau_sgdma_init(dev);
 704                 if (ret) {
 705                         NV_ERROR(dev, "Error initialising PCI(E): %d\n", ret);
 706                         return ret;
 707                 }
 708         }
 709
 710         NV_INFO(dev, "%d MiB GART (aperture)\n",
 711                 (int)(dev_priv->gart_info.aper_size >> 20));
 712         dev_priv->gart_info.aper_free = dev_priv->gart_info.aper_size;
 713
 714         ret = ttm_bo_init_mm(bdev, TTM_PL_TT,
 715                              dev_priv->gart_info.aper_size >> PAGE_SHIFT);
 716         if (ret) {
 717                 NV_ERROR(dev, "Failed TT mm init: %d\n", ret);
 718                 return ret;
 719         }
 720
 721         dev_priv->fb_mtrr = drm_mtrr_add(drm_get_resource_start(dev, 1),
 722                                          drm_get_resource_len(dev, 1),
 723                                          DRM_MTRR_WC);
 724
 725         return 0;
 726 }
 727
 728