git.oblomov.eu Git - linux-2.6/blob - drivers/char/agp/intel-agp.c

   1 /*
   2  * Intel AGPGART routines.
   3  */
   4
   5 #include <linux/module.h>
   6 #include <linux/pci.h>
   7 #include <linux/init.h>
   8 #include <linux/kernel.h>
   9 #include <linux/pagemap.h>
  10 #include <linux/agp_backend.h>
  11 #include "agp.h"
  12
  13 #define PCI_DEVICE_ID_INTEL_E7221_HB    0x2588
  14 #define PCI_DEVICE_ID_INTEL_E7221_IG    0x258a
  15 #define PCI_DEVICE_ID_INTEL_82946GZ_HB      0x2970
  16 #define PCI_DEVICE_ID_INTEL_82946GZ_IG      0x2972
  17 #define PCI_DEVICE_ID_INTEL_82G35_HB     0x2980
  18 #define PCI_DEVICE_ID_INTEL_82G35_IG     0x2982
  19 #define PCI_DEVICE_ID_INTEL_82965Q_HB       0x2990
  20 #define PCI_DEVICE_ID_INTEL_82965Q_IG       0x2992
  21 #define PCI_DEVICE_ID_INTEL_82965G_HB       0x29A0
  22 #define PCI_DEVICE_ID_INTEL_82965G_IG       0x29A2
  23 #define PCI_DEVICE_ID_INTEL_82965GM_HB      0x2A00
  24 #define PCI_DEVICE_ID_INTEL_82965GM_IG      0x2A02
  25 #define PCI_DEVICE_ID_INTEL_82965GME_HB     0x2A10
  26 #define PCI_DEVICE_ID_INTEL_82965GME_IG     0x2A12
  27 #define PCI_DEVICE_ID_INTEL_82945GME_HB     0x27AC
  28 #define PCI_DEVICE_ID_INTEL_82945GME_IG     0x27AE
  29 #define PCI_DEVICE_ID_INTEL_G33_HB          0x29C0
  30 #define PCI_DEVICE_ID_INTEL_G33_IG          0x29C2
  31 #define PCI_DEVICE_ID_INTEL_Q35_HB          0x29B0
  32 #define PCI_DEVICE_ID_INTEL_Q35_IG          0x29B2
  33 #define PCI_DEVICE_ID_INTEL_Q33_HB          0x29D0
  34 #define PCI_DEVICE_ID_INTEL_Q33_IG          0x29D2
  35 #define PCI_DEVICE_ID_INTEL_GM45_HB         0x2A40
  36 #define PCI_DEVICE_ID_INTEL_GM45_IG         0x2A42
  37 #define PCI_DEVICE_ID_INTEL_IGD_E_HB        0x2E00
  38 #define PCI_DEVICE_ID_INTEL_IGD_E_IG        0x2E02
  39 #define PCI_DEVICE_ID_INTEL_Q45_HB          0x2E10
  40 #define PCI_DEVICE_ID_INTEL_Q45_IG          0x2E12
  41 #define PCI_DEVICE_ID_INTEL_G45_HB          0x2E20
  42 #define PCI_DEVICE_ID_INTEL_G45_IG          0x2E22
  43
  44 /* cover 915 and 945 variants */
  45 #define IS_I915 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB || \
  46                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB || \
  47                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB || \
  48                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB || \
  49                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || \
  50                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB)
  51
  52 #define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_HB || \
  53                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82G35_HB || \
  54                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \
  55                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB || \
  56                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB || \
  57                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GME_HB || \
  58                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_GM45_HB)
  59
  60 #define IS_G33 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G33_HB || \
  61                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \
  62                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q33_HB)
  63
  64 #define IS_G4X (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGD_E_HB || \
  65                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q45_HB || \
  66                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G45_HB)
  67
  68 extern int agp_memory_reserved;
  69
  70
  71 /* Intel 815 register */
  72 #define INTEL_815_APCONT        0x51
  73 #define INTEL_815_ATTBASE_MASK  ~0x1FFFFFFF
  74
  75 /* Intel i820 registers */
  76 #define INTEL_I820_RDCR         0x51
  77 #define INTEL_I820_ERRSTS       0xc8
  78
  79 /* Intel i840 registers */
  80 #define INTEL_I840_MCHCFG       0x50
  81 #define INTEL_I840_ERRSTS       0xc8
  82
  83 /* Intel i850 registers */
  84 #define INTEL_I850_MCHCFG       0x50
  85 #define INTEL_I850_ERRSTS       0xc8
  86
  87 /* intel 915G registers */
  88 #define I915_GMADDR     0x18
  89 #define I915_MMADDR     0x10
  90 #define I915_PTEADDR    0x1C
  91 #define I915_GMCH_GMS_STOLEN_48M        (0x6 << 4)
  92 #define I915_GMCH_GMS_STOLEN_64M        (0x7 << 4)
  93 #define G33_GMCH_GMS_STOLEN_128M        (0x8 << 4)
  94 #define G33_GMCH_GMS_STOLEN_256M        (0x9 << 4)
  95 #define INTEL_GMCH_GMS_STOLEN_96M       (0xa << 4)
  96 #define INTEL_GMCH_GMS_STOLEN_160M      (0xb << 4)
  97 #define INTEL_GMCH_GMS_STOLEN_224M      (0xc << 4)
  98 #define INTEL_GMCH_GMS_STOLEN_352M      (0xd << 4)
  99
 100 #define I915_IFPADDR    0x60
 101
 102 /* Intel 965G registers */
 103 #define I965_MSAC 0x62
 104 #define I965_IFPADDR    0x70
 105
 106 /* Intel 7505 registers */
 107 #define INTEL_I7505_APSIZE      0x74
 108 #define INTEL_I7505_NCAPID      0x60
 109 #define INTEL_I7505_NISTAT      0x6c
 110 #define INTEL_I7505_ATTBASE     0x78
 111 #define INTEL_I7505_ERRSTS      0x42
 112 #define INTEL_I7505_AGPCTRL     0x70
 113 #define INTEL_I7505_MCHCFG      0x50
 114
 115 static const struct aper_size_info_fixed intel_i810_sizes[] =
 116 {
 117         {64, 16384, 4},
 118         /* The 32M mode still requires a 64k gatt */
 119         {32, 8192, 4}
 120 };
 121
 122 #define AGP_DCACHE_MEMORY       1
 123 #define AGP_PHYS_MEMORY         2
 124 #define INTEL_AGP_CACHED_MEMORY 3
 125
 126 static struct gatt_mask intel_i810_masks[] =
 127 {
 128         {.mask = I810_PTE_VALID, .type = 0},
 129         {.mask = (I810_PTE_VALID | I810_PTE_LOCAL), .type = AGP_DCACHE_MEMORY},
 130         {.mask = I810_PTE_VALID, .type = 0},
 131         {.mask = I810_PTE_VALID | I830_PTE_SYSTEM_CACHED,
 132          .type = INTEL_AGP_CACHED_MEMORY}
 133 };
 134
 135 static struct _intel_private {
 136         struct pci_dev *pcidev; /* device one */
 137         u8 __iomem *registers;
 138         u32 __iomem *gtt;               /* I915G */
 139         int num_dcache_entries;
 140         /* gtt_entries is the number of gtt entries that are already mapped
 141          * to stolen memory.  Stolen memory is larger than the memory mapped
 142          * through gtt_entries, as it includes some reserved space for the BIOS
 143          * popup and for the GTT.
 144          */
 145         int gtt_entries;                        /* i830+ */
 146         union {
 147                 void __iomem *i9xx_flush_page;
 148                 void *i8xx_flush_page;
 149         };
 150         struct page *i8xx_page;
 151         struct resource ifp_resource;
 152         int resource_valid;
 153 } intel_private;
 154
 155 static int intel_i810_fetch_size(void)
 156 {
 157         u32 smram_miscc;
 158         struct aper_size_info_fixed *values;
 159
 160         pci_read_config_dword(agp_bridge->dev, I810_SMRAM_MISCC, &smram_miscc);
 161         values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
 162
 163         if ((smram_miscc & I810_GMS) == I810_GMS_DISABLE) {
 164                 dev_warn(&agp_bridge->dev->dev, "i810 is disabled\n");
 165                 return 0;
 166         }
 167         if ((smram_miscc & I810_GFX_MEM_WIN_SIZE) == I810_GFX_MEM_WIN_32M) {
 168                 agp_bridge->previous_size =
 169                         agp_bridge->current_size = (void *) (values + 1);
 170                 agp_bridge->aperture_size_idx = 1;
 171                 return values[1].size;
 172         } else {
 173                 agp_bridge->previous_size =
 174                         agp_bridge->current_size = (void *) (values);
 175                 agp_bridge->aperture_size_idx = 0;
 176                 return values[0].size;
 177         }
 178
 179         return 0;
 180 }
 181
 182 static int intel_i810_configure(void)
 183 {
 184         struct aper_size_info_fixed *current_size;
 185         u32 temp;
 186         int i;
 187
 188         current_size = A_SIZE_FIX(agp_bridge->current_size);
 189
 190         if (!intel_private.registers) {
 191                 pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
 192                 temp &= 0xfff80000;
 193
 194                 intel_private.registers = ioremap(temp, 128 * 4096);
 195                 if (!intel_private.registers) {
 196                         dev_err(&intel_private.pcidev->dev,
 197                                 "can't remap memory\n");
 198                         return -ENOMEM;
 199                 }
 200         }
 201
 202         if ((readl(intel_private.registers+I810_DRAM_CTL)
 203                 & I810_DRAM_ROW_0) == I810_DRAM_ROW_0_SDRAM) {
 204                 /* This will need to be dynamically assigned */
 205                 dev_info(&intel_private.pcidev->dev,
 206                          "detected 4MB dedicated video ram\n");
 207                 intel_private.num_dcache_entries = 1024;
 208         }
 209         pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
 210         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
 211         writel(agp_bridge->gatt_bus_addr | I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
 212         readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
 213
 214         if (agp_bridge->driver->needs_scratch_page) {
 215                 for (i = 0; i < current_size->num_entries; i++) {
 216                         writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
 217                         readl(intel_private.registers+I810_PTE_BASE+(i*4));     /* PCI posting. */
 218                 }
 219         }
 220         global_cache_flush();
 221         return 0;
 222 }
 223
 224 static void intel_i810_cleanup(void)
 225 {
 226         writel(0, intel_private.registers+I810_PGETBL_CTL);
 227         readl(intel_private.registers); /* PCI Posting. */
 228         iounmap(intel_private.registers);
 229 }
 230
 231 static void intel_i810_tlbflush(struct agp_memory *mem)
 232 {
 233         return;
 234 }
 235
 236 static void intel_i810_agp_enable(struct agp_bridge_data *bridge, u32 mode)
 237 {
 238         return;
 239 }
 240
 241 /* Exists to support ARGB cursors */
 242 static void *i8xx_alloc_pages(void)
 243 {
 244         struct page *page;
 245
 246         page = alloc_pages(GFP_KERNEL | GFP_DMA32, 2);
 247         if (page == NULL)
 248                 return NULL;
 249
 250         if (set_pages_uc(page, 4) < 0) {
 251                 set_pages_wb(page, 4);
 252                 __free_pages(page, 2);
 253                 return NULL;
 254         }
 255         get_page(page);
 256         atomic_inc(&agp_bridge->current_memory_agp);
 257         return page_address(page);
 258 }
 259
 260 static void i8xx_destroy_pages(void *addr)
 261 {
 262         struct page *page;
 263
 264         if (addr == NULL)
 265                 return;
 266
 267         page = virt_to_page(addr);
 268         set_pages_wb(page, 4);
 269         put_page(page);
 270         __free_pages(page, 2);
 271         atomic_dec(&agp_bridge->current_memory_agp);
 272 }
 273
 274 static int intel_i830_type_to_mask_type(struct agp_bridge_data *bridge,
 275                                         int type)
 276 {
 277         if (type < AGP_USER_TYPES)
 278                 return type;
 279         else if (type == AGP_USER_CACHED_MEMORY)
 280                 return INTEL_AGP_CACHED_MEMORY;
 281         else
 282                 return 0;
 283 }
 284
 285 static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
 286                                 int type)
 287 {
 288         int i, j, num_entries;
 289         void *temp;
 290         int ret = -EINVAL;
 291         int mask_type;
 292
 293         if (mem->page_count == 0)
 294                 goto out;
 295
 296         temp = agp_bridge->current_size;
 297         num_entries = A_SIZE_FIX(temp)->num_entries;
 298
 299         if ((pg_start + mem->page_count) > num_entries)
 300                 goto out_err;
 301
 302
 303         for (j = pg_start; j < (pg_start + mem->page_count); j++) {
 304                 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j))) {
 305                         ret = -EBUSY;
 306                         goto out_err;
 307                 }
 308         }
 309
 310         if (type != mem->type)
 311                 goto out_err;
 312
 313         mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
 314
 315         switch (mask_type) {
 316         case AGP_DCACHE_MEMORY:
 317                 if (!mem->is_flushed)
 318                         global_cache_flush();
 319                 for (i = pg_start; i < (pg_start + mem->page_count); i++) {
 320                         writel((i*4096)|I810_PTE_LOCAL|I810_PTE_VALID,
 321                                intel_private.registers+I810_PTE_BASE+(i*4));
 322                 }
 323                 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
 324                 break;
 325         case AGP_PHYS_MEMORY:
 326         case AGP_NORMAL_MEMORY:
 327                 if (!mem->is_flushed)
 328                         global_cache_flush();
 329                 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
 330                         writel(agp_bridge->driver->mask_memory(agp_bridge,
 331                                                                mem->memory[i],
 332                                                                mask_type),
 333                                intel_private.registers+I810_PTE_BASE+(j*4));
 334                 }
 335                 readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
 336                 break;
 337         default:
 338                 goto out_err;
 339         }
 340
 341         agp_bridge->driver->tlb_flush(mem);
 342 out:
 343         ret = 0;
 344 out_err:
 345         mem->is_flushed = true;
 346         return ret;
 347 }
 348
 349 static int intel_i810_remove_entries(struct agp_memory *mem, off_t pg_start,
 350                                 int type)
 351 {
 352         int i;
 353
 354         if (mem->page_count == 0)
 355                 return 0;
 356
 357         for (i = pg_start; i < (mem->page_count + pg_start); i++) {
 358                 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
 359         }
 360         readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
 361
 362         agp_bridge->driver->tlb_flush(mem);
 363         return 0;
 364 }
 365
 366 /*
 367  * The i810/i830 requires a physical address to program its mouse
 368  * pointer into hardware.
 369  * However the Xserver still writes to it through the agp aperture.
 370  */
 371 static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type)
 372 {
 373         struct agp_memory *new;
 374         void *addr;
 375
 376         switch (pg_count) {
 377         case 1: addr = agp_bridge->driver->agp_alloc_page(agp_bridge);
 378                 break;
 379         case 4:
 380                 /* kludge to get 4 physical pages for ARGB cursor */
 381                 addr = i8xx_alloc_pages();
 382                 break;
 383         default:
 384                 return NULL;
 385         }
 386
 387         if (addr == NULL)
 388                 return NULL;
 389
 390         new = agp_create_memory(pg_count);
 391         if (new == NULL)
 392                 return NULL;
 393
 394         new->memory[0] = virt_to_gart(addr);
 395         if (pg_count == 4) {
 396                 /* kludge to get 4 physical pages for ARGB cursor */
 397                 new->memory[1] = new->memory[0] + PAGE_SIZE;
 398                 new->memory[2] = new->memory[1] + PAGE_SIZE;
 399                 new->memory[3] = new->memory[2] + PAGE_SIZE;
 400         }
 401         new->page_count = pg_count;
 402         new->num_scratch_pages = pg_count;
 403         new->type = AGP_PHYS_MEMORY;
 404         new->physical = new->memory[0];
 405         return new;
 406 }
 407
 408 static struct agp_memory *intel_i810_alloc_by_type(size_t pg_count, int type)
 409 {
 410         struct agp_memory *new;
 411
 412         if (type == AGP_DCACHE_MEMORY) {
 413                 if (pg_count != intel_private.num_dcache_entries)
 414                         return NULL;
 415
 416                 new = agp_create_memory(1);
 417                 if (new == NULL)
 418                         return NULL;
 419
 420                 new->type = AGP_DCACHE_MEMORY;
 421                 new->page_count = pg_count;
 422                 new->num_scratch_pages = 0;
 423                 agp_free_page_array(new);
 424                 return new;
 425         }
 426         if (type == AGP_PHYS_MEMORY)
 427                 return alloc_agpphysmem_i8xx(pg_count, type);
 428         return NULL;
 429 }
 430
 431 static void intel_i810_free_by_type(struct agp_memory *curr)
 432 {
 433         agp_free_key(curr->key);
 434         if (curr->type == AGP_PHYS_MEMORY) {
 435                 if (curr->page_count == 4)
 436                         i8xx_destroy_pages(gart_to_virt(curr->memory[0]));
 437                 else {
 438                         void *va = gart_to_virt(curr->memory[0]);
 439
 440                         agp_bridge->driver->agp_destroy_page(va,
 441                                                              AGP_PAGE_DESTROY_UNMAP);
 442                         agp_bridge->driver->agp_destroy_page(va,
 443                                                              AGP_PAGE_DESTROY_FREE);
 444                 }
 445                 agp_free_page_array(curr);
 446         }
 447         kfree(curr);
 448 }
 449
 450 static unsigned long intel_i810_mask_memory(struct agp_bridge_data *bridge,
 451         unsigned long addr, int type)
 452 {
 453         /* Type checking must be done elsewhere */
 454         return addr | bridge->driver->masks[type].mask;
 455 }
 456
 457 static struct aper_size_info_fixed intel_i830_sizes[] =
 458 {
 459         {128, 32768, 5},
 460         /* The 64M mode still requires a 128k gatt */
 461         {64, 16384, 5},
 462         {256, 65536, 6},
 463         {512, 131072, 7},
 464 };
 465
 466 static void intel_i830_init_gtt_entries(void)
 467 {
 468         u16 gmch_ctrl;
 469         int gtt_entries;
 470         u8 rdct;
 471         int local = 0;
 472         static const int ddt[4] = { 0, 16, 32, 64 };
 473         int size; /* reserved space (in kb) at the top of stolen memory */
 474
 475         pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 476
 477         if (IS_I965) {
 478                 u32 pgetbl_ctl;
 479                 pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL);
 480
 481                 /* The 965 has a field telling us the size of the GTT,
 482                  * which may be larger than what is necessary to map the
 483                  * aperture.
 484                  */
 485                 switch (pgetbl_ctl & I965_PGETBL_SIZE_MASK) {
 486                 case I965_PGETBL_SIZE_128KB:
 487                         size = 128;
 488                         break;
 489                 case I965_PGETBL_SIZE_256KB:
 490                         size = 256;
 491                         break;
 492                 case I965_PGETBL_SIZE_512KB:
 493                         size = 512;
 494                         break;
 495                 case I965_PGETBL_SIZE_1MB:
 496                         size = 1024;
 497                         break;
 498                 case I965_PGETBL_SIZE_2MB:
 499                         size = 2048;
 500                         break;
 501                 case I965_PGETBL_SIZE_1_5MB:
 502                         size = 1024 + 512;
 503                         break;
 504                 default:
 505                         dev_info(&intel_private.pcidev->dev,
 506                                  "unknown page table size, assuming 512KB\n");
 507                         size = 512;
 508                 }
 509                 size += 4; /* add in BIOS popup space */
 510         } else if (IS_G33) {
 511         /* G33's GTT size defined in gmch_ctrl */
 512                 switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) {
 513                 case G33_PGETBL_SIZE_1M:
 514                         size = 1024;
 515                         break;
 516                 case G33_PGETBL_SIZE_2M:
 517                         size = 2048;
 518                         break;
 519                 default:
 520                         dev_info(&agp_bridge->dev->dev,
 521                                  "unknown page table size 0x%x, assuming 512KB\n",
 522                                 (gmch_ctrl & G33_PGETBL_SIZE_MASK));
 523                         size = 512;
 524                 }
 525                 size += 4;
 526         } else if (IS_G4X) {
 527                 /* On 4 series hardware, GTT stolen is separate from graphics
 528                  * stolen, ignore it in stolen gtt entries counting */
 529                 size = 0;
 530         } else {
 531                 /* On previous hardware, the GTT size was just what was
 532                  * required to map the aperture.
 533                  */
 534                 size = agp_bridge->driver->fetch_size() + 4;
 535         }
 536
 537         if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB ||
 538             agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) {
 539                 switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
 540                 case I830_GMCH_GMS_STOLEN_512:
 541                         gtt_entries = KB(512) - KB(size);
 542                         break;
 543                 case I830_GMCH_GMS_STOLEN_1024:
 544                         gtt_entries = MB(1) - KB(size);
 545                         break;
 546                 case I830_GMCH_GMS_STOLEN_8192:
 547                         gtt_entries = MB(8) - KB(size);
 548                         break;
 549                 case I830_GMCH_GMS_LOCAL:
 550                         rdct = readb(intel_private.registers+I830_RDRAM_CHANNEL_TYPE);
 551                         gtt_entries = (I830_RDRAM_ND(rdct) + 1) *
 552                                         MB(ddt[I830_RDRAM_DDT(rdct)]);
 553                         local = 1;
 554                         break;
 555                 default:
 556                         gtt_entries = 0;
 557                         break;
 558                 }
 559         } else {
 560                 switch (gmch_ctrl & I855_GMCH_GMS_MASK) {
 561                 case I855_GMCH_GMS_STOLEN_1M:
 562                         gtt_entries = MB(1) - KB(size);
 563                         break;
 564                 case I855_GMCH_GMS_STOLEN_4M:
 565                         gtt_entries = MB(4) - KB(size);
 566                         break;
 567                 case I855_GMCH_GMS_STOLEN_8M:
 568                         gtt_entries = MB(8) - KB(size);
 569                         break;
 570                 case I855_GMCH_GMS_STOLEN_16M:
 571                         gtt_entries = MB(16) - KB(size);
 572                         break;
 573                 case I855_GMCH_GMS_STOLEN_32M:
 574                         gtt_entries = MB(32) - KB(size);
 575                         break;
 576                 case I915_GMCH_GMS_STOLEN_48M:
 577                         /* Check it's really I915G */
 578                         if (IS_I915 || IS_I965 || IS_G33 || IS_G4X)
 579                                 gtt_entries = MB(48) - KB(size);
 580                         else
 581                                 gtt_entries = 0;
 582                         break;
 583                 case I915_GMCH_GMS_STOLEN_64M:
 584                         /* Check it's really I915G */
 585                         if (IS_I915 || IS_I965 || IS_G33 || IS_G4X)
 586                                 gtt_entries = MB(64) - KB(size);
 587                         else
 588                                 gtt_entries = 0;
 589                         break;
 590                 case G33_GMCH_GMS_STOLEN_128M:
 591                         if (IS_G33 || IS_I965 || IS_G4X)
 592                                 gtt_entries = MB(128) - KB(size);
 593                         else
 594                                 gtt_entries = 0;
 595                         break;
 596                 case G33_GMCH_GMS_STOLEN_256M:
 597                         if (IS_G33 || IS_I965 || IS_G4X)
 598                                 gtt_entries = MB(256) - KB(size);
 599                         else
 600                                 gtt_entries = 0;
 601                         break;
 602                 case INTEL_GMCH_GMS_STOLEN_96M:
 603                         if (IS_I965 || IS_G4X)
 604                                 gtt_entries = MB(96) - KB(size);
 605                         else
 606                                 gtt_entries = 0;
 607                         break;
 608                 case INTEL_GMCH_GMS_STOLEN_160M:
 609                         if (IS_I965 || IS_G4X)
 610                                 gtt_entries = MB(160) - KB(size);
 611                         else
 612                                 gtt_entries = 0;
 613                         break;
 614                 case INTEL_GMCH_GMS_STOLEN_224M:
 615                         if (IS_I965 || IS_G4X)
 616                                 gtt_entries = MB(224) - KB(size);
 617                         else
 618                                 gtt_entries = 0;
 619                         break;
 620                 case INTEL_GMCH_GMS_STOLEN_352M:
 621                         if (IS_I965 || IS_G4X)
 622                                 gtt_entries = MB(352) - KB(size);
 623                         else
 624                                 gtt_entries = 0;
 625                         break;
 626                 default:
 627                         gtt_entries = 0;
 628                         break;
 629                 }
 630         }
 631         if (gtt_entries > 0)
 632                 dev_info(&agp_bridge->dev->dev, "detected %dK %s memory\n",
 633                        gtt_entries / KB(1), local ? "local" : "stolen");
 634         else
 635                 dev_info(&agp_bridge->dev->dev,
 636                        "no pre-allocated video memory detected\n");
 637         gtt_entries /= KB(4);
 638
 639         intel_private.gtt_entries = gtt_entries;
 640 }
 641
 642 static void intel_i830_fini_flush(void)
 643 {
 644         kunmap(intel_private.i8xx_page);
 645         intel_private.i8xx_flush_page = NULL;
 646         unmap_page_from_agp(intel_private.i8xx_page);
 647
 648         __free_page(intel_private.i8xx_page);
 649         intel_private.i8xx_page = NULL;
 650 }
 651
 652 static void intel_i830_setup_flush(void)
 653 {
 654         /* return if we've already set the flush mechanism up */
 655         if (intel_private.i8xx_page)
 656                 return;
 657
 658         intel_private.i8xx_page = alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA32);
 659         if (!intel_private.i8xx_page)
 660                 return;
 661
 662         /* make page uncached */
 663         map_page_into_agp(intel_private.i8xx_page);
 664
 665         intel_private.i8xx_flush_page = kmap(intel_private.i8xx_page);
 666         if (!intel_private.i8xx_flush_page)
 667                 intel_i830_fini_flush();
 668 }
 669
 670 static void intel_i830_chipset_flush(struct agp_bridge_data *bridge)
 671 {
 672         unsigned int *pg = intel_private.i8xx_flush_page;
 673         int i;
 674
 675         for (i = 0; i < 256; i += 2)
 676                 *(pg + i) = i;
 677
 678         wmb();
 679 }
 680
 681 /* The intel i830 automatically initializes the agp aperture during POST.
 682  * Use the memory already set aside for in the GTT.
 683  */
 684 static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
 685 {
 686         int page_order;
 687         struct aper_size_info_fixed *size;
 688         int num_entries;
 689         u32 temp;
 690
 691         size = agp_bridge->current_size;
 692         page_order = size->page_order;
 693         num_entries = size->num_entries;
 694         agp_bridge->gatt_table_real = NULL;
 695
 696         pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
 697         temp &= 0xfff80000;
 698
 699         intel_private.registers = ioremap(temp, 128 * 4096);
 700         if (!intel_private.registers)
 701                 return -ENOMEM;
 702
 703         temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
 704         global_cache_flush();   /* FIXME: ?? */
 705
 706         /* we have to call this as early as possible after the MMIO base address is known */
 707         intel_i830_init_gtt_entries();
 708
 709         agp_bridge->gatt_table = NULL;
 710
 711         agp_bridge->gatt_bus_addr = temp;
 712
 713         return 0;
 714 }
 715
 716 /* Return the gatt table to a sane state. Use the top of stolen
 717  * memory for the GTT.
 718  */
 719 static int intel_i830_free_gatt_table(struct agp_bridge_data *bridge)
 720 {
 721         return 0;
 722 }
 723
 724 static int intel_i830_fetch_size(void)
 725 {
 726         u16 gmch_ctrl;
 727         struct aper_size_info_fixed *values;
 728
 729         values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
 730
 731         if (agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82830_HB &&
 732             agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82845G_HB) {
 733                 /* 855GM/852GM/865G has 128MB aperture size */
 734                 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
 735                 agp_bridge->aperture_size_idx = 0;
 736                 return values[0].size;
 737         }
 738
 739         pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 740
 741         if ((gmch_ctrl & I830_GMCH_MEM_MASK) == I830_GMCH_MEM_128M) {
 742                 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
 743                 agp_bridge->aperture_size_idx = 0;
 744                 return values[0].size;
 745         } else {
 746                 agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + 1);
 747                 agp_bridge->aperture_size_idx = 1;
 748                 return values[1].size;
 749         }
 750
 751         return 0;
 752 }
 753
 754 static int intel_i830_configure(void)
 755 {
 756         struct aper_size_info_fixed *current_size;
 757         u32 temp;
 758         u16 gmch_ctrl;
 759         int i;
 760
 761         current_size = A_SIZE_FIX(agp_bridge->current_size);
 762
 763         pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
 764         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
 765
 766         pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 767         gmch_ctrl |= I830_GMCH_ENABLED;
 768         pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
 769
 770         writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
 771         readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
 772
 773         if (agp_bridge->driver->needs_scratch_page) {
 774                 for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
 775                         writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
 776                         readl(intel_private.registers+I810_PTE_BASE+(i*4));     /* PCI Posting. */
 777                 }
 778         }
 779
 780         global_cache_flush();
 781
 782         intel_i830_setup_flush();
 783         return 0;
 784 }
 785
 786 static void intel_i830_cleanup(void)
 787 {
 788         iounmap(intel_private.registers);
 789 }
 790
 791 static int intel_i830_insert_entries(struct agp_memory *mem, off_t pg_start,
 792                                      int type)
 793 {
 794         int i, j, num_entries;
 795         void *temp;
 796         int ret = -EINVAL;
 797         int mask_type;
 798
 799         if (mem->page_count == 0)
 800                 goto out;
 801
 802         temp = agp_bridge->current_size;
 803         num_entries = A_SIZE_FIX(temp)->num_entries;
 804
 805         if (pg_start < intel_private.gtt_entries) {
 806                 dev_printk(KERN_DEBUG, &intel_private.pcidev->dev,
 807                            "pg_start == 0x%.8lx, intel_private.gtt_entries == 0x%.8x\n",
 808                            pg_start, intel_private.gtt_entries);
 809
 810                 dev_info(&intel_private.pcidev->dev,
 811                          "trying to insert into local/stolen memory\n");
 812                 goto out_err;
 813         }
 814
 815         if ((pg_start + mem->page_count) > num_entries)
 816                 goto out_err;
 817
 818         /* The i830 can't check the GTT for entries since its read only,
 819          * depend on the caller to make the correct offset decisions.
 820          */
 821
 822         if (type != mem->type)
 823                 goto out_err;
 824
 825         mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
 826
 827         if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
 828             mask_type != INTEL_AGP_CACHED_MEMORY)
 829                 goto out_err;
 830
 831         if (!mem->is_flushed)
 832                 global_cache_flush();
 833
 834         for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
 835                 writel(agp_bridge->driver->mask_memory(agp_bridge,
 836                                                        mem->memory[i], mask_type),
 837                        intel_private.registers+I810_PTE_BASE+(j*4));
 838         }
 839         readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
 840         agp_bridge->driver->tlb_flush(mem);
 841
 842 out:
 843         ret = 0;
 844 out_err:
 845         mem->is_flushed = true;
 846         return ret;
 847 }
 848
 849 static int intel_i830_remove_entries(struct agp_memory *mem, off_t pg_start,
 850                                      int type)
 851 {
 852         int i;
 853
 854         if (mem->page_count == 0)
 855                 return 0;
 856
 857         if (pg_start < intel_private.gtt_entries) {
 858                 dev_info(&intel_private.pcidev->dev,
 859                          "trying to disable local/stolen memory\n");
 860                 return -EINVAL;
 861         }
 862
 863         for (i = pg_start; i < (mem->page_count + pg_start); i++) {
 864                 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
 865         }
 866         readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
 867
 868         agp_bridge->driver->tlb_flush(mem);
 869         return 0;
 870 }
 871
 872 static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count, int type)
 873 {
 874         if (type == AGP_PHYS_MEMORY)
 875                 return alloc_agpphysmem_i8xx(pg_count, type);
 876         /* always return NULL for other allocation types for now */
 877         return NULL;
 878 }
 879
 880 static int intel_alloc_chipset_flush_resource(void)
 881 {
 882         int ret;
 883         ret = pci_bus_alloc_resource(agp_bridge->dev->bus, &intel_private.ifp_resource, PAGE_SIZE,
 884                                      PAGE_SIZE, PCIBIOS_MIN_MEM, 0,
 885                                      pcibios_align_resource, agp_bridge->dev);
 886
 887         return ret;
 888 }
 889
 890 static void intel_i915_setup_chipset_flush(void)
 891 {
 892         int ret;
 893         u32 temp;
 894
 895         pci_read_config_dword(agp_bridge->dev, I915_IFPADDR, &temp);
 896         if (!(temp & 0x1)) {
 897                 intel_alloc_chipset_flush_resource();
 898                 intel_private.resource_valid = 1;
 899                 pci_write_config_dword(agp_bridge->dev, I915_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
 900         } else {
 901                 temp &= ~1;
 902
 903                 intel_private.resource_valid = 1;
 904                 intel_private.ifp_resource.start = temp;
 905                 intel_private.ifp_resource.end = temp + PAGE_SIZE;
 906                 ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
 907                 /* some BIOSes reserve this area in a pnp some don't */
 908                 if (ret)
 909                         intel_private.resource_valid = 0;
 910         }
 911 }
 912
 913 static void intel_i965_g33_setup_chipset_flush(void)
 914 {
 915         u32 temp_hi, temp_lo;
 916         int ret;
 917
 918         pci_read_config_dword(agp_bridge->dev, I965_IFPADDR + 4, &temp_hi);
 919         pci_read_config_dword(agp_bridge->dev, I965_IFPADDR, &temp_lo);
 920
 921         if (!(temp_lo & 0x1)) {
 922
 923                 intel_alloc_chipset_flush_resource();
 924
 925                 intel_private.resource_valid = 1;
 926                 pci_write_config_dword(agp_bridge->dev, I965_IFPADDR + 4,
 927                         upper_32_bits(intel_private.ifp_resource.start));
 928                 pci_write_config_dword(agp_bridge->dev, I965_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
 929         } else {
 930                 u64 l64;
 931
 932                 temp_lo &= ~0x1;
 933                 l64 = ((u64)temp_hi << 32) | temp_lo;
 934
 935                 intel_private.resource_valid = 1;
 936                 intel_private.ifp_resource.start = l64;
 937                 intel_private.ifp_resource.end = l64 + PAGE_SIZE;
 938                 ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
 939                 /* some BIOSes reserve this area in a pnp some don't */
 940                 if (ret)
 941                         intel_private.resource_valid = 0;
 942         }
 943 }
 944
 945 static void intel_i9xx_setup_flush(void)
 946 {
 947         /* return if already configured */
 948         if (intel_private.ifp_resource.start)
 949                 return;
 950
 951         /* setup a resource for this object */
 952         intel_private.ifp_resource.name = "Intel Flush Page";
 953         intel_private.ifp_resource.flags = IORESOURCE_MEM;
 954
 955         /* Setup chipset flush for 915 */
 956         if (IS_I965 || IS_G33 || IS_G4X) {
 957                 intel_i965_g33_setup_chipset_flush();
 958         } else {
 959                 intel_i915_setup_chipset_flush();
 960         }
 961
 962         if (intel_private.ifp_resource.start) {
 963                 intel_private.i9xx_flush_page = ioremap_nocache(intel_private.ifp_resource.start, PAGE_SIZE);
 964                 if (!intel_private.i9xx_flush_page)
 965                         dev_info(&intel_private.pcidev->dev, "can't ioremap flush page - no chipset flushing");
 966         }
 967 }
 968
 969 static int intel_i915_configure(void)
 970 {
 971         struct aper_size_info_fixed *current_size;
 972         u32 temp;
 973         u16 gmch_ctrl;
 974         int i;
 975
 976         current_size = A_SIZE_FIX(agp_bridge->current_size);
 977
 978         pci_read_config_dword(intel_private.pcidev, I915_GMADDR, &temp);
 979
 980         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
 981
 982         pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 983         gmch_ctrl |= I830_GMCH_ENABLED;
 984         pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
 985
 986         writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
 987         readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
 988
 989         if (agp_bridge->driver->needs_scratch_page) {
 990                 for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
 991                         writel(agp_bridge->scratch_page, intel_private.gtt+i);
 992                         readl(intel_private.gtt+i);     /* PCI Posting. */
 993                 }
 994         }
 995
 996         global_cache_flush();
 997
 998         intel_i9xx_setup_flush();
 999
1000         return 0;
1001 }
1002
1003 static void intel_i915_cleanup(void)
1004 {
1005         if (intel_private.i9xx_flush_page)
1006                 iounmap(intel_private.i9xx_flush_page);
1007         if (intel_private.resource_valid)
1008                 release_resource(&intel_private.ifp_resource);
1009         intel_private.ifp_resource.start = 0;
1010         intel_private.resource_valid = 0;
1011         iounmap(intel_private.gtt);
1012         iounmap(intel_private.registers);
1013 }
1014
1015 static void intel_i915_chipset_flush(struct agp_bridge_data *bridge)
1016 {
1017         if (intel_private.i9xx_flush_page)
1018                 writel(1, intel_private.i9xx_flush_page);
1019 }
1020
1021 static int intel_i915_insert_entries(struct agp_memory *mem, off_t pg_start,
1022                                      int type)
1023 {
1024         int i, j, num_entries;
1025         void *temp;
1026         int ret = -EINVAL;
1027         int mask_type;
1028
1029         if (mem->page_count == 0)
1030                 goto out;
1031
1032         temp = agp_bridge->current_size;
1033         num_entries = A_SIZE_FIX(temp)->num_entries;
1034
1035         if (pg_start < intel_private.gtt_entries) {
1036                 dev_printk(KERN_DEBUG, &intel_private.pcidev->dev,
1037                            "pg_start == 0x%.8lx, intel_private.gtt_entries == 0x%.8x\n",
1038                            pg_start, intel_private.gtt_entries);
1039
1040                 dev_info(&intel_private.pcidev->dev,
1041                          "trying to insert into local/stolen memory\n");
1042                 goto out_err;
1043         }
1044
1045         if ((pg_start + mem->page_count) > num_entries)
1046                 goto out_err;
1047
1048         /* The i915 can't check the GTT for entries since its read only,
1049          * depend on the caller to make the correct offset decisions.
1050          */
1051
1052         if (type != mem->type)
1053                 goto out_err;
1054
1055         mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
1056
1057         if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
1058             mask_type != INTEL_AGP_CACHED_MEMORY)
1059                 goto out_err;
1060
1061         if (!mem->is_flushed)
1062                 global_cache_flush();
1063
1064         for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
1065                 writel(agp_bridge->driver->mask_memory(agp_bridge,
1066                         mem->memory[i], mask_type), intel_private.gtt+j);
1067         }
1068
1069         readl(intel_private.gtt+j-1);
1070         agp_bridge->driver->tlb_flush(mem);
1071
1072  out:
1073         ret = 0;
1074  out_err:
1075         mem->is_flushed = true;
1076         return ret;
1077 }
1078
1079 static int intel_i915_remove_entries(struct agp_memory *mem, off_t pg_start,
1080                                      int type)
1081 {
1082         int i;
1083
1084         if (mem->page_count == 0)
1085                 return 0;
1086
1087         if (pg_start < intel_private.gtt_entries) {
1088                 dev_info(&intel_private.pcidev->dev,
1089                          "trying to disable local/stolen memory\n");
1090                 return -EINVAL;
1091         }
1092
1093         for (i = pg_start; i < (mem->page_count + pg_start); i++)
1094                 writel(agp_bridge->scratch_page, intel_private.gtt+i);
1095
1096         readl(intel_private.gtt+i-1);
1097
1098         agp_bridge->driver->tlb_flush(mem);
1099         return 0;
1100 }
1101
1102 /* Return the aperture size by just checking the resource length.  The effect
1103  * described in the spec of the MSAC registers is just changing of the
1104  * resource size.
1105  */
1106 static int intel_i9xx_fetch_size(void)
1107 {
1108         int num_sizes = ARRAY_SIZE(intel_i830_sizes);
1109         int aper_size; /* size in megabytes */
1110         int i;
1111
1112         aper_size = pci_resource_len(intel_private.pcidev, 2) / MB(1);
1113
1114         for (i = 0; i < num_sizes; i++) {
1115                 if (aper_size == intel_i830_sizes[i].size) {
1116                         agp_bridge->current_size = intel_i830_sizes + i;
1117                         agp_bridge->previous_size = agp_bridge->current_size;
1118                         return aper_size;
1119                 }
1120         }
1121
1122         return 0;
1123 }
1124
1125 /* The intel i915 automatically initializes the agp aperture during POST.
1126  * Use the memory already set aside for in the GTT.
1127  */
1128 static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
1129 {
1130         int page_order;
1131         struct aper_size_info_fixed *size;
1132         int num_entries;
1133         u32 temp, temp2;
1134         int gtt_map_size = 256 * 1024;
1135
1136         size = agp_bridge->current_size;
1137         page_order = size->page_order;
1138         num_entries = size->num_entries;
1139         agp_bridge->gatt_table_real = NULL;
1140
1141         pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
1142         pci_read_config_dword(intel_private.pcidev, I915_PTEADDR, &temp2);
1143
1144         if (IS_G33)
1145             gtt_map_size = 1024 * 1024; /* 1M on G33 */
1146         intel_private.gtt = ioremap(temp2, gtt_map_size);
1147         if (!intel_private.gtt)
1148                 return -ENOMEM;
1149
1150         temp &= 0xfff80000;
1151
1152         intel_private.registers = ioremap(temp, 128 * 4096);
1153         if (!intel_private.registers) {
1154                 iounmap(intel_private.gtt);
1155                 return -ENOMEM;
1156         }
1157
1158         temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
1159         global_cache_flush();   /* FIXME: ? */
1160
1161         /* we have to call this as early as possible after the MMIO base address is known */
1162         intel_i830_init_gtt_entries();
1163
1164         agp_bridge->gatt_table = NULL;
1165
1166         agp_bridge->gatt_bus_addr = temp;
1167
1168         return 0;
1169 }
1170
1171 /*
1172  * The i965 supports 36-bit physical addresses, but to keep
1173  * the format of the GTT the same, the bits that don't fit
1174  * in a 32-bit word are shifted down to bits 4..7.
1175  *
1176  * Gcc is smart enough to notice that "(addr >> 28) & 0xf0"
1177  * is always zero on 32-bit architectures, so no need to make
1178  * this conditional.
1179  */
1180 static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
1181         unsigned long addr, int type)
1182 {
1183         /* Shift high bits down */
1184         addr |= (addr >> 28) & 0xf0;
1185
1186         /* Type checking must be done elsewhere */
1187         return addr | bridge->driver->masks[type].mask;
1188 }
1189
1190 static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
1191 {
1192         switch (agp_bridge->dev->device) {
1193         case PCI_DEVICE_ID_INTEL_GM45_HB:
1194         case PCI_DEVICE_ID_INTEL_IGD_E_HB:
1195         case PCI_DEVICE_ID_INTEL_Q45_HB:
1196         case PCI_DEVICE_ID_INTEL_G45_HB:
1197                 *gtt_offset = *gtt_size = MB(2);
1198                 break;
1199         default:
1200                 *gtt_offset = *gtt_size = KB(512);
1201         }
1202 }
1203
1204 /* The intel i965 automatically initializes the agp aperture during POST.
1205  * Use the memory already set aside for in the GTT.
1206  */
1207 static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
1208 {
1209         int page_order;
1210         struct aper_size_info_fixed *size;
1211         int num_entries;
1212         u32 temp;
1213         int gtt_offset, gtt_size;
1214
1215         size = agp_bridge->current_size;
1216         page_order = size->page_order;
1217         num_entries = size->num_entries;
1218         agp_bridge->gatt_table_real = NULL;
1219
1220         pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
1221
1222         temp &= 0xfff00000;
1223
1224         intel_i965_get_gtt_range(&gtt_offset, &gtt_size);
1225
1226         intel_private.gtt = ioremap((temp + gtt_offset) , gtt_size);
1227
1228         if (!intel_private.gtt)
1229                 return -ENOMEM;
1230
1231         intel_private.registers = ioremap(temp, 128 * 4096);
1232         if (!intel_private.registers) {
1233                 iounmap(intel_private.gtt);
1234                 return -ENOMEM;
1235         }
1236
1237         temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
1238         global_cache_flush();   /* FIXME: ? */
1239
1240         /* we have to call this as early as possible after the MMIO base address is known */
1241         intel_i830_init_gtt_entries();
1242
1243         agp_bridge->gatt_table = NULL;
1244
1245         agp_bridge->gatt_bus_addr = temp;
1246
1247         return 0;
1248 }
1249
1250
1251 static int intel_fetch_size(void)
1252 {
1253         int i;
1254         u16 temp;
1255         struct aper_size_info_16 *values;
1256
1257         pci_read_config_word(agp_bridge->dev, INTEL_APSIZE, &temp);
1258         values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
1259
1260         for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
1261                 if (temp == values[i].size_value) {
1262                         agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + i);
1263                         agp_bridge->aperture_size_idx = i;
1264                         return values[i].size;
1265                 }
1266         }
1267
1268         return 0;
1269 }
1270
1271 static int __intel_8xx_fetch_size(u8 temp)
1272 {
1273         int i;
1274         struct aper_size_info_8 *values;
1275
1276         values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
1277
1278         for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
1279                 if (temp == values[i].size_value) {
1280                         agp_bridge->previous_size =
1281                                 agp_bridge->current_size = (void *) (values + i);
1282                         agp_bridge->aperture_size_idx = i;
1283                         return values[i].size;
1284                 }
1285         }
1286         return 0;
1287 }
1288
1289 static int intel_8xx_fetch_size(void)
1290 {
1291         u8 temp;
1292
1293         pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
1294         return __intel_8xx_fetch_size(temp);
1295 }
1296
1297 static int intel_815_fetch_size(void)
1298 {
1299         u8 temp;
1300
1301         /* Intel 815 chipsets have a _weird_ APSIZE register with only
1302          * one non-reserved bit, so mask the others out ... */
1303         pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
1304         temp &= (1 << 3);
1305
1306         return __intel_8xx_fetch_size(temp);
1307 }
1308
1309 static void intel_tlbflush(struct agp_memory *mem)
1310 {
1311         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2200);
1312         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1313 }
1314
1315
1316 static void intel_8xx_tlbflush(struct agp_memory *mem)
1317 {
1318         u32 temp;
1319         pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
1320         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp & ~(1 << 7));
1321         pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
1322         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp | (1 << 7));
1323 }
1324
1325
1326 static void intel_cleanup(void)
1327 {
1328         u16 temp;
1329         struct aper_size_info_16 *previous_size;
1330
1331         previous_size = A_SIZE_16(agp_bridge->previous_size);
1332         pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1333         pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1334         pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
1335 }
1336
1337
1338 static void intel_8xx_cleanup(void)
1339 {
1340         u16 temp;
1341         struct aper_size_info_8 *previous_size;
1342
1343         previous_size = A_SIZE_8(agp_bridge->previous_size);
1344         pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1345         pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1346         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
1347 }
1348
1349
1350 static int intel_configure(void)
1351 {
1352         u32 temp;
1353         u16 temp2;
1354         struct aper_size_info_16 *current_size;
1355
1356         current_size = A_SIZE_16(agp_bridge->current_size);
1357
1358         /* aperture size */
1359         pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1360
1361         /* address to map to */
1362         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1363         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1364
1365         /* attbase - aperture base */
1366         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1367
1368         /* agpctrl */
1369         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1370
1371         /* paccfg/nbxcfg */
1372         pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1373         pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG,
1374                         (temp2 & ~(1 << 10)) | (1 << 9));
1375         /* clear any possible error conditions */
1376         pci_write_config_byte(agp_bridge->dev, INTEL_ERRSTS + 1, 7);
1377         return 0;
1378 }
1379
1380 static int intel_815_configure(void)
1381 {
1382         u32 temp, addr;
1383         u8 temp2;
1384         struct aper_size_info_8 *current_size;
1385
1386         /* attbase - aperture base */
1387         /* the Intel 815 chipset spec. says that bits 29-31 in the
1388         * ATTBASE register are reserved -> try not to write them */
1389         if (agp_bridge->gatt_bus_addr & INTEL_815_ATTBASE_MASK) {
1390                 dev_emerg(&agp_bridge->dev->dev, "gatt bus addr too high");
1391                 return -EINVAL;
1392         }
1393
1394         current_size = A_SIZE_8(agp_bridge->current_size);
1395
1396         /* aperture size */
1397         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
1398                         current_size->size_value);
1399
1400         /* address to map to */
1401         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1402         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1403
1404         pci_read_config_dword(agp_bridge->dev, INTEL_ATTBASE, &addr);
1405         addr &= INTEL_815_ATTBASE_MASK;
1406         addr |= agp_bridge->gatt_bus_addr;
1407         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, addr);
1408
1409         /* agpctrl */
1410         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1411
1412         /* apcont */
1413         pci_read_config_byte(agp_bridge->dev, INTEL_815_APCONT, &temp2);
1414         pci_write_config_byte(agp_bridge->dev, INTEL_815_APCONT, temp2 | (1 << 1));
1415
1416         /* clear any possible error conditions */
1417         /* Oddness : this chipset seems to have no ERRSTS register ! */
1418         return 0;
1419 }
1420
1421 static void intel_820_tlbflush(struct agp_memory *mem)
1422 {
1423         return;
1424 }
1425
1426 static void intel_820_cleanup(void)
1427 {
1428         u8 temp;
1429         struct aper_size_info_8 *previous_size;
1430
1431         previous_size = A_SIZE_8(agp_bridge->previous_size);
1432         pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp);
1433         pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR,
1434                         temp & ~(1 << 1));
1435         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
1436                         previous_size->size_value);
1437 }
1438
1439
1440 static int intel_820_configure(void)
1441 {
1442         u32 temp;
1443         u8 temp2;
1444         struct aper_size_info_8 *current_size;
1445
1446         current_size = A_SIZE_8(agp_bridge->current_size);
1447
1448         /* aperture size */
1449         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1450
1451         /* address to map to */
1452         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1453         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1454
1455         /* attbase - aperture base */
1456         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1457
1458         /* agpctrl */
1459         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1460
1461         /* global enable aperture access */
1462         /* This flag is not accessed through MCHCFG register as in */
1463         /* i850 chipset. */
1464         pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp2);
1465         pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR, temp2 | (1 << 1));
1466         /* clear any possible AGP-related error conditions */
1467         pci_write_config_word(agp_bridge->dev, INTEL_I820_ERRSTS, 0x001c);
1468         return 0;
1469 }
1470
1471 static int intel_840_configure(void)
1472 {
1473         u32 temp;
1474         u16 temp2;
1475         struct aper_size_info_8 *current_size;
1476
1477         current_size = A_SIZE_8(agp_bridge->current_size);
1478
1479         /* aperture size */
1480         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1481
1482         /* address to map to */
1483         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1484         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1485
1486         /* attbase - aperture base */
1487         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1488
1489         /* agpctrl */
1490         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1491
1492         /* mcgcfg */
1493         pci_read_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, &temp2);
1494         pci_write_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, temp2 | (1 << 9));
1495         /* clear any possible error conditions */
1496         pci_write_config_word(agp_bridge->dev, INTEL_I840_ERRSTS, 0xc000);
1497         return 0;
1498 }
1499
1500 static int intel_845_configure(void)
1501 {
1502         u32 temp;
1503         u8 temp2;
1504         struct aper_size_info_8 *current_size;
1505
1506         current_size = A_SIZE_8(agp_bridge->current_size);
1507
1508         /* aperture size */
1509         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1510
1511         if (agp_bridge->apbase_config != 0) {
1512                 pci_write_config_dword(agp_bridge->dev, AGP_APBASE,
1513                                        agp_bridge->apbase_config);
1514         } else {
1515                 /* address to map to */
1516                 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1517                 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1518                 agp_bridge->apbase_config = temp;
1519         }
1520
1521         /* attbase - aperture base */
1522         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1523
1524         /* agpctrl */
1525         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1526
1527         /* agpm */
1528         pci_read_config_byte(agp_bridge->dev, INTEL_I845_AGPM, &temp2);
1529         pci_write_config_byte(agp_bridge->dev, INTEL_I845_AGPM, temp2 | (1 << 1));
1530         /* clear any possible error conditions */
1531         pci_write_config_word(agp_bridge->dev, INTEL_I845_ERRSTS, 0x001c);
1532
1533         intel_i830_setup_flush();
1534         return 0;
1535 }
1536
1537 static int intel_850_configure(void)
1538 {
1539         u32 temp;
1540         u16 temp2;
1541         struct aper_size_info_8 *current_size;
1542
1543         current_size = A_SIZE_8(agp_bridge->current_size);
1544
1545         /* aperture size */
1546         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1547
1548         /* address to map to */
1549         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1550         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1551
1552         /* attbase - aperture base */
1553         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1554
1555         /* agpctrl */
1556         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1557
1558         /* mcgcfg */
1559         pci_read_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, &temp2);
1560         pci_write_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, temp2 | (1 << 9));
1561         /* clear any possible AGP-related error conditions */
1562         pci_write_config_word(agp_bridge->dev, INTEL_I850_ERRSTS, 0x001c);
1563         return 0;
1564 }
1565
1566 static int intel_860_configure(void)
1567 {
1568         u32 temp;
1569         u16 temp2;
1570         struct aper_size_info_8 *current_size;
1571
1572         current_size = A_SIZE_8(agp_bridge->current_size);
1573
1574         /* aperture size */
1575         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1576
1577         /* address to map to */
1578         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1579         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1580
1581         /* attbase - aperture base */
1582         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1583
1584         /* agpctrl */
1585         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1586
1587         /* mcgcfg */
1588         pci_read_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, &temp2);
1589         pci_write_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, temp2 | (1 << 9));
1590         /* clear any possible AGP-related error conditions */
1591         pci_write_config_word(agp_bridge->dev, INTEL_I860_ERRSTS, 0xf700);
1592         return 0;
1593 }
1594
1595 static int intel_830mp_configure(void)
1596 {
1597         u32 temp;
1598         u16 temp2;
1599         struct aper_size_info_8 *current_size;
1600
1601         current_size = A_SIZE_8(agp_bridge->current_size);
1602
1603         /* aperture size */
1604         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1605
1606         /* address to map to */
1607         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1608         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1609
1610         /* attbase - aperture base */
1611         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1612
1613         /* agpctrl */
1614         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1615
1616         /* gmch */
1617         pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1618         pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp2 | (1 << 9));
1619         /* clear any possible AGP-related error conditions */
1620         pci_write_config_word(agp_bridge->dev, INTEL_I830_ERRSTS, 0x1c);
1621         return 0;
1622 }
1623
1624 static int intel_7505_configure(void)
1625 {
1626         u32 temp;
1627         u16 temp2;
1628         struct aper_size_info_8 *current_size;
1629
1630         current_size = A_SIZE_8(agp_bridge->current_size);
1631
1632         /* aperture size */
1633         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1634
1635         /* address to map to */
1636         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1637         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1638
1639         /* attbase - aperture base */
1640         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1641
1642         /* agpctrl */
1643         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1644
1645         /* mchcfg */
1646         pci_read_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, &temp2);
1647         pci_write_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, temp2 | (1 << 9));
1648
1649         return 0;
1650 }
1651
1652 /* Setup function */
1653 static const struct gatt_mask intel_generic_masks[] =
1654 {
1655         {.mask = 0x00000017, .type = 0}
1656 };
1657
1658 static const struct aper_size_info_8 intel_815_sizes[2] =
1659 {
1660         {64, 16384, 4, 0},
1661         {32, 8192, 3, 8},
1662 };
1663
1664 static const struct aper_size_info_8 intel_8xx_sizes[7] =
1665 {
1666         {256, 65536, 6, 0},
1667         {128, 32768, 5, 32},
1668         {64, 16384, 4, 48},
1669         {32, 8192, 3, 56},
1670         {16, 4096, 2, 60},
1671         {8, 2048, 1, 62},
1672         {4, 1024, 0, 63}
1673 };
1674
1675 static const struct aper_size_info_16 intel_generic_sizes[7] =
1676 {
1677         {256, 65536, 6, 0},
1678         {128, 32768, 5, 32},
1679         {64, 16384, 4, 48},
1680         {32, 8192, 3, 56},
1681         {16, 4096, 2, 60},
1682         {8, 2048, 1, 62},
1683         {4, 1024, 0, 63}
1684 };
1685
1686 static const struct aper_size_info_8 intel_830mp_sizes[4] =
1687 {
1688         {256, 65536, 6, 0},
1689         {128, 32768, 5, 32},
1690         {64, 16384, 4, 48},
1691         {32, 8192, 3, 56}
1692 };
1693
1694 static const struct agp_bridge_driver intel_generic_driver = {
1695         .owner                  = THIS_MODULE,
1696         .aperture_sizes         = intel_generic_sizes,
1697         .size_type              = U16_APER_SIZE,
1698         .num_aperture_sizes     = 7,
1699         .configure              = intel_configure,
1700         .fetch_size             = intel_fetch_size,
1701         .cleanup                = intel_cleanup,
1702         .tlb_flush              = intel_tlbflush,
1703         .mask_memory            = agp_generic_mask_memory,
1704         .masks                  = intel_generic_masks,
1705         .agp_enable             = agp_generic_enable,
1706         .cache_flush            = global_cache_flush,
1707         .create_gatt_table      = agp_generic_create_gatt_table,
1708         .free_gatt_table        = agp_generic_free_gatt_table,
1709         .insert_memory          = agp_generic_insert_memory,
1710         .remove_memory          = agp_generic_remove_memory,
1711         .alloc_by_type          = agp_generic_alloc_by_type,
1712         .free_by_type           = agp_generic_free_by_type,
1713         .agp_alloc_page         = agp_generic_alloc_page,
1714         .agp_destroy_page       = agp_generic_destroy_page,
1715         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1716 };
1717
1718 static const struct agp_bridge_driver intel_810_driver = {
1719         .owner                  = THIS_MODULE,
1720         .aperture_sizes         = intel_i810_sizes,
1721         .size_type              = FIXED_APER_SIZE,
1722         .num_aperture_sizes     = 2,
1723         .needs_scratch_page     = true,
1724         .configure              = intel_i810_configure,
1725         .fetch_size             = intel_i810_fetch_size,
1726         .cleanup                = intel_i810_cleanup,
1727         .tlb_flush              = intel_i810_tlbflush,
1728         .mask_memory            = intel_i810_mask_memory,
1729         .masks                  = intel_i810_masks,
1730         .agp_enable             = intel_i810_agp_enable,
1731         .cache_flush            = global_cache_flush,
1732         .create_gatt_table      = agp_generic_create_gatt_table,
1733         .free_gatt_table        = agp_generic_free_gatt_table,
1734         .insert_memory          = intel_i810_insert_entries,
1735         .remove_memory          = intel_i810_remove_entries,
1736         .alloc_by_type          = intel_i810_alloc_by_type,
1737         .free_by_type           = intel_i810_free_by_type,
1738         .agp_alloc_page         = agp_generic_alloc_page,
1739         .agp_destroy_page       = agp_generic_destroy_page,
1740         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1741 };
1742
1743 static const struct agp_bridge_driver intel_815_driver = {
1744         .owner                  = THIS_MODULE,
1745         .aperture_sizes         = intel_815_sizes,
1746         .size_type              = U8_APER_SIZE,
1747         .num_aperture_sizes     = 2,
1748         .configure              = intel_815_configure,
1749         .fetch_size             = intel_815_fetch_size,
1750         .cleanup                = intel_8xx_cleanup,
1751         .tlb_flush              = intel_8xx_tlbflush,
1752         .mask_memory            = agp_generic_mask_memory,
1753         .masks                  = intel_generic_masks,
1754         .agp_enable             = agp_generic_enable,
1755         .cache_flush            = global_cache_flush,
1756         .create_gatt_table      = agp_generic_create_gatt_table,
1757         .free_gatt_table        = agp_generic_free_gatt_table,
1758         .insert_memory          = agp_generic_insert_memory,
1759         .remove_memory          = agp_generic_remove_memory,
1760         .alloc_by_type          = agp_generic_alloc_by_type,
1761         .free_by_type           = agp_generic_free_by_type,
1762         .agp_alloc_page         = agp_generic_alloc_page,
1763         .agp_destroy_page       = agp_generic_destroy_page,
1764         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1765 };
1766
1767 static const struct agp_bridge_driver intel_830_driver = {
1768         .owner                  = THIS_MODULE,
1769         .aperture_sizes         = intel_i830_sizes,
1770         .size_type              = FIXED_APER_SIZE,
1771         .num_aperture_sizes     = 4,
1772         .needs_scratch_page     = true,
1773         .configure              = intel_i830_configure,
1774         .fetch_size             = intel_i830_fetch_size,
1775         .cleanup                = intel_i830_cleanup,
1776         .tlb_flush              = intel_i810_tlbflush,
1777         .mask_memory            = intel_i810_mask_memory,
1778         .masks                  = intel_i810_masks,
1779         .agp_enable             = intel_i810_agp_enable,
1780         .cache_flush            = global_cache_flush,
1781         .create_gatt_table      = intel_i830_create_gatt_table,
1782         .free_gatt_table        = intel_i830_free_gatt_table,
1783         .insert_memory          = intel_i830_insert_entries,
1784         .remove_memory          = intel_i830_remove_entries,
1785         .alloc_by_type          = intel_i830_alloc_by_type,
1786         .free_by_type           = intel_i810_free_by_type,
1787         .agp_alloc_page         = agp_generic_alloc_page,
1788         .agp_destroy_page       = agp_generic_destroy_page,
1789         .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
1790         .chipset_flush          = intel_i830_chipset_flush,
1791 };
1792
1793 static const struct agp_bridge_driver intel_820_driver = {
1794         .owner                  = THIS_MODULE,
1795         .aperture_sizes         = intel_8xx_sizes,
1796         .size_type              = U8_APER_SIZE,
1797         .num_aperture_sizes     = 7,
1798         .configure              = intel_820_configure,
1799         .fetch_size             = intel_8xx_fetch_size,
1800         .cleanup                = intel_820_cleanup,
1801         .tlb_flush              = intel_820_tlbflush,
1802         .mask_memory            = agp_generic_mask_memory,
1803         .masks                  = intel_generic_masks,
1804         .agp_enable             = agp_generic_enable,
1805         .cache_flush            = global_cache_flush,
1806         .create_gatt_table      = agp_generic_create_gatt_table,
1807         .free_gatt_table        = agp_generic_free_gatt_table,
1808         .insert_memory          = agp_generic_insert_memory,
1809         .remove_memory          = agp_generic_remove_memory,
1810         .alloc_by_type          = agp_generic_alloc_by_type,
1811         .free_by_type           = agp_generic_free_by_type,
1812         .agp_alloc_page         = agp_generic_alloc_page,
1813         .agp_destroy_page       = agp_generic_destroy_page,
1814         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1815 };
1816
1817 static const struct agp_bridge_driver intel_830mp_driver = {
1818         .owner                  = THIS_MODULE,
1819         .aperture_sizes         = intel_830mp_sizes,
1820         .size_type              = U8_APER_SIZE,
1821         .num_aperture_sizes     = 4,
1822         .configure              = intel_830mp_configure,
1823         .fetch_size             = intel_8xx_fetch_size,
1824         .cleanup                = intel_8xx_cleanup,
1825         .tlb_flush              = intel_8xx_tlbflush,
1826         .mask_memory            = agp_generic_mask_memory,
1827         .masks                  = intel_generic_masks,
1828         .agp_enable             = agp_generic_enable,
1829         .cache_flush            = global_cache_flush,
1830         .create_gatt_table      = agp_generic_create_gatt_table,
1831         .free_gatt_table        = agp_generic_free_gatt_table,
1832         .insert_memory          = agp_generic_insert_memory,
1833         .remove_memory          = agp_generic_remove_memory,
1834         .alloc_by_type          = agp_generic_alloc_by_type,
1835         .free_by_type           = agp_generic_free_by_type,
1836         .agp_alloc_page         = agp_generic_alloc_page,
1837         .agp_destroy_page       = agp_generic_destroy_page,
1838         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1839 };
1840
1841 static const struct agp_bridge_driver intel_840_driver = {
1842         .owner                  = THIS_MODULE,
1843         .aperture_sizes         = intel_8xx_sizes,
1844         .size_type              = U8_APER_SIZE,
1845         .num_aperture_sizes     = 7,
1846         .configure              = intel_840_configure,
1847         .fetch_size             = intel_8xx_fetch_size,
1848         .cleanup                = intel_8xx_cleanup,
1849         .tlb_flush              = intel_8xx_tlbflush,
1850         .mask_memory            = agp_generic_mask_memory,
1851         .masks                  = intel_generic_masks,
1852         .agp_enable             = agp_generic_enable,
1853         .cache_flush            = global_cache_flush,
1854         .create_gatt_table      = agp_generic_create_gatt_table,
1855         .free_gatt_table        = agp_generic_free_gatt_table,
1856         .insert_memory          = agp_generic_insert_memory,
1857         .remove_memory          = agp_generic_remove_memory,
1858         .alloc_by_type          = agp_generic_alloc_by_type,
1859         .free_by_type           = agp_generic_free_by_type,
1860         .agp_alloc_page         = agp_generic_alloc_page,
1861         .agp_destroy_page       = agp_generic_destroy_page,
1862         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1863 };
1864
1865 static const struct agp_bridge_driver intel_845_driver = {
1866         .owner                  = THIS_MODULE,
1867         .aperture_sizes         = intel_8xx_sizes,
1868         .size_type              = U8_APER_SIZE,
1869         .num_aperture_sizes     = 7,
1870         .configure              = intel_845_configure,
1871         .fetch_size             = intel_8xx_fetch_size,
1872         .cleanup                = intel_8xx_cleanup,
1873         .tlb_flush              = intel_8xx_tlbflush,
1874         .mask_memory            = agp_generic_mask_memory,
1875         .masks                  = intel_generic_masks,
1876         .agp_enable             = agp_generic_enable,
1877         .cache_flush            = global_cache_flush,
1878         .create_gatt_table      = agp_generic_create_gatt_table,
1879         .free_gatt_table        = agp_generic_free_gatt_table,
1880         .insert_memory          = agp_generic_insert_memory,
1881         .remove_memory          = agp_generic_remove_memory,
1882         .alloc_by_type          = agp_generic_alloc_by_type,
1883         .free_by_type           = agp_generic_free_by_type,
1884         .agp_alloc_page         = agp_generic_alloc_page,
1885         .agp_destroy_page       = agp_generic_destroy_page,
1886         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1887         .chipset_flush          = intel_i830_chipset_flush,
1888 };
1889
1890 static const struct agp_bridge_driver intel_850_driver = {
1891         .owner                  = THIS_MODULE,
1892         .aperture_sizes         = intel_8xx_sizes,
1893         .size_type              = U8_APER_SIZE,
1894         .num_aperture_sizes     = 7,
1895         .configure              = intel_850_configure,
1896         .fetch_size             = intel_8xx_fetch_size,
1897         .cleanup                = intel_8xx_cleanup,
1898         .tlb_flush              = intel_8xx_tlbflush,
1899         .mask_memory            = agp_generic_mask_memory,
1900         .masks                  = intel_generic_masks,
1901         .agp_enable             = agp_generic_enable,
1902         .cache_flush            = global_cache_flush,
1903         .create_gatt_table      = agp_generic_create_gatt_table,
1904         .free_gatt_table        = agp_generic_free_gatt_table,
1905         .insert_memory          = agp_generic_insert_memory,
1906         .remove_memory          = agp_generic_remove_memory,
1907         .alloc_by_type          = agp_generic_alloc_by_type,
1908         .free_by_type           = agp_generic_free_by_type,
1909         .agp_alloc_page         = agp_generic_alloc_page,
1910         .agp_destroy_page       = agp_generic_destroy_page,
1911         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1912 };
1913
1914 static const struct agp_bridge_driver intel_860_driver = {
1915         .owner                  = THIS_MODULE,
1916         .aperture_sizes         = intel_8xx_sizes,
1917         .size_type              = U8_APER_SIZE,
1918         .num_aperture_sizes     = 7,
1919         .configure              = intel_860_configure,
1920         .fetch_size             = intel_8xx_fetch_size,
1921         .cleanup                = intel_8xx_cleanup,
1922         .tlb_flush              = intel_8xx_tlbflush,
1923         .mask_memory            = agp_generic_mask_memory,
1924         .masks                  = intel_generic_masks,
1925         .agp_enable             = agp_generic_enable,
1926         .cache_flush            = global_cache_flush,
1927         .create_gatt_table      = agp_generic_create_gatt_table,
1928         .free_gatt_table        = agp_generic_free_gatt_table,
1929         .insert_memory          = agp_generic_insert_memory,
1930         .remove_memory          = agp_generic_remove_memory,
1931         .alloc_by_type          = agp_generic_alloc_by_type,
1932         .free_by_type           = agp_generic_free_by_type,
1933         .agp_alloc_page         = agp_generic_alloc_page,
1934         .agp_destroy_page       = agp_generic_destroy_page,
1935         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
1936 };
1937
1938 static const struct agp_bridge_driver intel_915_driver = {
1939         .owner                  = THIS_MODULE,
1940         .aperture_sizes         = intel_i830_sizes,
1941         .size_type              = FIXED_APER_SIZE,
1942         .num_aperture_sizes     = 4,
1943         .needs_scratch_page     = true,
1944         .configure              = intel_i915_configure,
1945         .fetch_size             = intel_i9xx_fetch_size,
1946         .cleanup                = intel_i915_cleanup,
1947         .tlb_flush              = intel_i810_tlbflush,
1948         .mask_memory            = intel_i810_mask_memory,
1949         .masks                  = intel_i810_masks,
1950         .agp_enable             = intel_i810_agp_enable,
1951         .cache_flush            = global_cache_flush,
1952         .create_gatt_table      = intel_i915_create_gatt_table,
1953         .free_gatt_table        = intel_i830_free_gatt_table,
1954         .insert_memory          = intel_i915_insert_entries,
1955         .remove_memory          = intel_i915_remove_entries,
1956         .alloc_by_type          = intel_i830_alloc_by_type,
1957         .free_by_type           = intel_i810_free_by_type,
1958         .agp_alloc_page         = agp_generic_alloc_page,
1959         .agp_destroy_page       = agp_generic_destroy_page,
1960         .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
1961         .chipset_flush          = intel_i915_chipset_flush,
1962 };
1963
1964 static const struct agp_bridge_driver intel_i965_driver = {
1965         .owner                  = THIS_MODULE,
1966         .aperture_sizes         = intel_i830_sizes,
1967         .size_type              = FIXED_APER_SIZE,
1968         .num_aperture_sizes     = 4,
1969         .needs_scratch_page     = true,
1970         .configure              = intel_i915_configure,
1971         .fetch_size             = intel_i9xx_fetch_size,
1972         .cleanup                = intel_i915_cleanup,
1973         .tlb_flush              = intel_i810_tlbflush,
1974         .mask_memory            = intel_i965_mask_memory,
1975         .masks                  = intel_i810_masks,
1976         .agp_enable             = intel_i810_agp_enable,
1977         .cache_flush            = global_cache_flush,
1978         .create_gatt_table      = intel_i965_create_gatt_table,
1979         .free_gatt_table        = intel_i830_free_gatt_table,
1980         .insert_memory          = intel_i915_insert_entries,
1981         .remove_memory          = intel_i915_remove_entries,
1982         .alloc_by_type          = intel_i830_alloc_by_type,
1983         .free_by_type           = intel_i810_free_by_type,
1984         .agp_alloc_page         = agp_generic_alloc_page,
1985         .agp_destroy_page       = agp_generic_destroy_page,
1986         .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
1987         .chipset_flush          = intel_i915_chipset_flush,
1988 };
1989
1990 static const struct agp_bridge_driver intel_7505_driver = {
1991         .owner                  = THIS_MODULE,
1992         .aperture_sizes         = intel_8xx_sizes,
1993         .size_type              = U8_APER_SIZE,
1994         .num_aperture_sizes     = 7,
1995         .configure              = intel_7505_configure,
1996         .fetch_size             = intel_8xx_fetch_size,
1997         .cleanup                = intel_8xx_cleanup,
1998         .tlb_flush              = intel_8xx_tlbflush,
1999         .mask_memory            = agp_generic_mask_memory,
2000         .masks                  = intel_generic_masks,
2001         .agp_enable             = agp_generic_enable,
2002         .cache_flush            = global_cache_flush,
2003         .create_gatt_table      = agp_generic_create_gatt_table,
2004         .free_gatt_table        = agp_generic_free_gatt_table,
2005         .insert_memory          = agp_generic_insert_memory,
2006         .remove_memory          = agp_generic_remove_memory,
2007         .alloc_by_type          = agp_generic_alloc_by_type,
2008         .free_by_type           = agp_generic_free_by_type,
2009         .agp_alloc_page         = agp_generic_alloc_page,
2010         .agp_destroy_page       = agp_generic_destroy_page,
2011         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2012 };
2013
2014 static const struct agp_bridge_driver intel_g33_driver = {
2015         .owner                  = THIS_MODULE,
2016         .aperture_sizes         = intel_i830_sizes,
2017         .size_type              = FIXED_APER_SIZE,
2018         .num_aperture_sizes     = 4,
2019         .needs_scratch_page     = true,
2020         .configure              = intel_i915_configure,
2021         .fetch_size             = intel_i9xx_fetch_size,
2022         .cleanup                = intel_i915_cleanup,
2023         .tlb_flush              = intel_i810_tlbflush,
2024         .mask_memory            = intel_i965_mask_memory,
2025         .masks                  = intel_i810_masks,
2026         .agp_enable             = intel_i810_agp_enable,
2027         .cache_flush            = global_cache_flush,
2028         .create_gatt_table      = intel_i915_create_gatt_table,
2029         .free_gatt_table        = intel_i830_free_gatt_table,
2030         .insert_memory          = intel_i915_insert_entries,
2031         .remove_memory          = intel_i915_remove_entries,
2032         .alloc_by_type          = intel_i830_alloc_by_type,
2033         .free_by_type           = intel_i810_free_by_type,
2034         .agp_alloc_page         = agp_generic_alloc_page,
2035         .agp_destroy_page       = agp_generic_destroy_page,
2036         .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
2037         .chipset_flush          = intel_i915_chipset_flush,
2038 };
2039
2040 static int find_gmch(u16 device)
2041 {
2042         struct pci_dev *gmch_device;
2043
2044         gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
2045         if (gmch_device && PCI_FUNC(gmch_device->devfn) != 0) {
2046                 gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL,
2047                                              device, gmch_device);
2048         }
2049
2050         if (!gmch_device)
2051                 return 0;
2052
2053         intel_private.pcidev = gmch_device;
2054         return 1;
2055 }
2056
2057 /* Table to describe Intel GMCH and AGP/PCIE GART drivers.  At least one of
2058  * driver and gmch_driver must be non-null, and find_gmch will determine
2059  * which one should be used if a gmch_chip_id is present.
2060  */
2061 static const struct intel_driver_description {
2062         unsigned int chip_id;
2063         unsigned int gmch_chip_id;
2064         unsigned int multi_gmch_chip; /* if we have more gfx chip type on this HB. */
2065         char *name;
2066         const struct agp_bridge_driver *driver;
2067         const struct agp_bridge_driver *gmch_driver;
2068 } intel_agp_chipsets[] = {
2069         { PCI_DEVICE_ID_INTEL_82443LX_0, 0, 0, "440LX", &intel_generic_driver, NULL },
2070         { PCI_DEVICE_ID_INTEL_82443BX_0, 0, 0, "440BX", &intel_generic_driver, NULL },
2071         { PCI_DEVICE_ID_INTEL_82443GX_0, 0, 0, "440GX", &intel_generic_driver, NULL },
2072         { PCI_DEVICE_ID_INTEL_82810_MC1, PCI_DEVICE_ID_INTEL_82810_IG1, 0, "i810",
2073                 NULL, &intel_810_driver },
2074         { PCI_DEVICE_ID_INTEL_82810_MC3, PCI_DEVICE_ID_INTEL_82810_IG3, 0, "i810",
2075                 NULL, &intel_810_driver },
2076         { PCI_DEVICE_ID_INTEL_82810E_MC, PCI_DEVICE_ID_INTEL_82810E_IG, 0, "i810",
2077                 NULL, &intel_810_driver },
2078         { PCI_DEVICE_ID_INTEL_82815_MC, PCI_DEVICE_ID_INTEL_82815_CGC, 0, "i815",
2079                 &intel_815_driver, &intel_810_driver },
2080         { PCI_DEVICE_ID_INTEL_82820_HB, 0, 0, "i820", &intel_820_driver, NULL },
2081         { PCI_DEVICE_ID_INTEL_82820_UP_HB, 0, 0, "i820", &intel_820_driver, NULL },
2082         { PCI_DEVICE_ID_INTEL_82830_HB, PCI_DEVICE_ID_INTEL_82830_CGC, 0, "830M",
2083                 &intel_830mp_driver, &intel_830_driver },
2084         { PCI_DEVICE_ID_INTEL_82840_HB, 0, 0, "i840", &intel_840_driver, NULL },
2085         { PCI_DEVICE_ID_INTEL_82845_HB, 0, 0, "845G", &intel_845_driver, NULL },
2086         { PCI_DEVICE_ID_INTEL_82845G_HB, PCI_DEVICE_ID_INTEL_82845G_IG, 0, "830M",
2087                 &intel_845_driver, &intel_830_driver },
2088         { PCI_DEVICE_ID_INTEL_82850_HB, 0, 0, "i850", &intel_850_driver, NULL },
2089         { PCI_DEVICE_ID_INTEL_82855PM_HB, 0, 0, "855PM", &intel_845_driver, NULL },
2090         { PCI_DEVICE_ID_INTEL_82855GM_HB, PCI_DEVICE_ID_INTEL_82855GM_IG, 0, "855GM",
2091                 &intel_845_driver, &intel_830_driver },
2092         { PCI_DEVICE_ID_INTEL_82860_HB, 0, 0, "i860", &intel_860_driver, NULL },
2093         { PCI_DEVICE_ID_INTEL_82865_HB, PCI_DEVICE_ID_INTEL_82865_IG, 0, "865",
2094                 &intel_845_driver, &intel_830_driver },
2095         { PCI_DEVICE_ID_INTEL_82875_HB, 0, 0, "i875", &intel_845_driver, NULL },
2096         { PCI_DEVICE_ID_INTEL_E7221_HB, PCI_DEVICE_ID_INTEL_E7221_IG, 0, "E7221 (i915)",
2097                 NULL, &intel_915_driver },
2098         { PCI_DEVICE_ID_INTEL_82915G_HB, PCI_DEVICE_ID_INTEL_82915G_IG, 0, "915G",
2099                 NULL, &intel_915_driver },
2100         { PCI_DEVICE_ID_INTEL_82915GM_HB, PCI_DEVICE_ID_INTEL_82915GM_IG, 0, "915GM",
2101                 NULL, &intel_915_driver },
2102         { PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, 0, "945G",
2103                 NULL, &intel_915_driver },
2104         { PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GM_IG, 0, "945GM",
2105                 NULL, &intel_915_driver },
2106         { PCI_DEVICE_ID_INTEL_82945GME_HB, PCI_DEVICE_ID_INTEL_82945GME_IG, 0, "945GME",
2107                 NULL, &intel_915_driver },
2108         { PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ",
2109                 NULL, &intel_i965_driver },
2110         { PCI_DEVICE_ID_INTEL_82G35_HB, PCI_DEVICE_ID_INTEL_82G35_IG, 0, "G35",
2111                 NULL, &intel_i965_driver },
2112         { PCI_DEVICE_ID_INTEL_82965Q_HB, PCI_DEVICE_ID_INTEL_82965Q_IG, 0, "965Q",
2113                 NULL, &intel_i965_driver },
2114         { PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, 0, "965G",
2115                 NULL, &intel_i965_driver },
2116         { PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GM_IG, 0, "965GM",
2117                 NULL, &intel_i965_driver },
2118         { PCI_DEVICE_ID_INTEL_82965GME_HB, PCI_DEVICE_ID_INTEL_82965GME_IG, 0, "965GME/GLE",
2119                 NULL, &intel_i965_driver },
2120         { PCI_DEVICE_ID_INTEL_7505_0, 0, 0, "E7505", &intel_7505_driver, NULL },
2121         { PCI_DEVICE_ID_INTEL_7205_0, 0, 0, "E7205", &intel_7505_driver, NULL },
2122         { PCI_DEVICE_ID_INTEL_G33_HB, PCI_DEVICE_ID_INTEL_G33_IG, 0, "G33",
2123                 NULL, &intel_g33_driver },
2124         { PCI_DEVICE_ID_INTEL_Q35_HB, PCI_DEVICE_ID_INTEL_Q35_IG, 0, "Q35",
2125                 NULL, &intel_g33_driver },
2126         { PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, 0, "Q33",
2127                 NULL, &intel_g33_driver },
2128         { PCI_DEVICE_ID_INTEL_GM45_HB, PCI_DEVICE_ID_INTEL_GM45_IG, 0,
2129             "Mobile Intel? GM45 Express", NULL, &intel_i965_driver },
2130         { PCI_DEVICE_ID_INTEL_IGD_E_HB, PCI_DEVICE_ID_INTEL_IGD_E_IG, 0,
2131             "Intel Integrated Graphics Device", NULL, &intel_i965_driver },
2132         { PCI_DEVICE_ID_INTEL_Q45_HB, PCI_DEVICE_ID_INTEL_Q45_IG, 0,
2133             "Q45/Q43", NULL, &intel_i965_driver },
2134         { PCI_DEVICE_ID_INTEL_G45_HB, PCI_DEVICE_ID_INTEL_G45_IG, 0,
2135             "G45/G43", NULL, &intel_i965_driver },
2136         { 0, 0, 0, NULL, NULL, NULL }
2137 };
2138
2139 static int __devinit agp_intel_probe(struct pci_dev *pdev,
2140                                      const struct pci_device_id *ent)
2141 {
2142         struct agp_bridge_data *bridge;
2143         u8 cap_ptr = 0;
2144         struct resource *r;
2145         int i;
2146
2147         cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
2148
2149         bridge = agp_alloc_bridge();
2150         if (!bridge)
2151                 return -ENOMEM;
2152
2153         for (i = 0; intel_agp_chipsets[i].name != NULL; i++) {
2154                 /* In case that multiple models of gfx chip may
2155                    stand on same host bridge type, this can be
2156                    sure we detect the right IGD. */
2157                 if (pdev->device == intel_agp_chipsets[i].chip_id) {
2158                         if ((intel_agp_chipsets[i].gmch_chip_id != 0) &&
2159                                 find_gmch(intel_agp_chipsets[i].gmch_chip_id)) {
2160                                 bridge->driver =
2161                                         intel_agp_chipsets[i].gmch_driver;
2162                                 break;
2163                         } else if (intel_agp_chipsets[i].multi_gmch_chip) {
2164                                 continue;
2165                         } else {
2166                                 bridge->driver = intel_agp_chipsets[i].driver;
2167                                 break;
2168                         }
2169                 }
2170         }
2171
2172         if (intel_agp_chipsets[i].name == NULL) {
2173                 if (cap_ptr)
2174                         dev_warn(&pdev->dev, "unsupported Intel chipset [%04x/%04x]\n",
2175                                  pdev->vendor, pdev->device);
2176                 agp_put_bridge(bridge);
2177                 return -ENODEV;
2178         }
2179
2180         if (bridge->driver == NULL) {
2181                 /* bridge has no AGP and no IGD detected */
2182                 if (cap_ptr)
2183                         dev_warn(&pdev->dev, "can't find bridge device (chip_id: %04x)\n",
2184                                  intel_agp_chipsets[i].gmch_chip_id);
2185                 agp_put_bridge(bridge);
2186                 return -ENODEV;
2187         }
2188
2189         bridge->dev = pdev;
2190         bridge->capndx = cap_ptr;
2191         bridge->dev_private_data = &intel_private;
2192
2193         dev_info(&pdev->dev, "Intel %s Chipset\n", intel_agp_chipsets[i].name);
2194
2195         /*
2196         * The following fixes the case where the BIOS has "forgotten" to
2197         * provide an address range for the GART.
2198         * 20030610 - hamish@zot.org
2199         */
2200         r = &pdev->resource[0];
2201         if (!r->start && r->end) {
2202                 if (pci_assign_resource(pdev, 0)) {
2203                         dev_err(&pdev->dev, "can't assign resource 0\n");
2204                         agp_put_bridge(bridge);
2205                         return -ENODEV;
2206                 }
2207         }
2208
2209         /*
2210         * If the device has not been properly setup, the following will catch
2211         * the problem and should stop the system from crashing.
2212         * 20030610 - hamish@zot.org
2213         */
2214         if (pci_enable_device(pdev)) {
2215                 dev_err(&pdev->dev, "can't enable PCI device\n");
2216                 agp_put_bridge(bridge);
2217                 return -ENODEV;
2218         }
2219
2220         /* Fill in the mode register */
2221         if (cap_ptr) {
2222                 pci_read_config_dword(pdev,
2223                                 bridge->capndx+PCI_AGP_STATUS,
2224                                 &bridge->mode);
2225         }
2226
2227         pci_set_drvdata(pdev, bridge);
2228         return agp_add_bridge(bridge);
2229 }
2230
2231 static void __devexit agp_intel_remove(struct pci_dev *pdev)
2232 {
2233         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
2234
2235         agp_remove_bridge(bridge);
2236
2237         if (intel_private.pcidev)
2238                 pci_dev_put(intel_private.pcidev);
2239
2240         agp_put_bridge(bridge);
2241 }
2242
2243 #ifdef CONFIG_PM
2244 static int agp_intel_resume(struct pci_dev *pdev)
2245 {
2246         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
2247         int ret_val;
2248
2249         pci_restore_state(pdev);
2250
2251         /* We should restore our graphics device's config space,
2252          * as host bridge (00:00) resumes before graphics device (02:00),
2253          * then our access to its pci space can work right.
2254          */
2255         if (intel_private.pcidev)
2256                 pci_restore_state(intel_private.pcidev);
2257
2258         if (bridge->driver == &intel_generic_driver)
2259                 intel_configure();
2260         else if (bridge->driver == &intel_850_driver)
2261                 intel_850_configure();
2262         else if (bridge->driver == &intel_845_driver)
2263                 intel_845_configure();
2264         else if (bridge->driver == &intel_830mp_driver)
2265                 intel_830mp_configure();
2266         else if (bridge->driver == &intel_915_driver)
2267                 intel_i915_configure();
2268         else if (bridge->driver == &intel_830_driver)
2269                 intel_i830_configure();
2270         else if (bridge->driver == &intel_810_driver)
2271                 intel_i810_configure();
2272         else if (bridge->driver == &intel_i965_driver)
2273                 intel_i915_configure();
2274
2275         ret_val = agp_rebind_memory();
2276         if (ret_val != 0)
2277                 return ret_val;
2278
2279         return 0;
2280 }
2281 #endif
2282
2283 static struct pci_device_id agp_intel_pci_table[] = {
2284 #define ID(x)                                           \
2285         {                                               \
2286         .class          = (PCI_CLASS_BRIDGE_HOST << 8), \
2287         .class_mask     = ~0,                           \
2288         .vendor         = PCI_VENDOR_ID_INTEL,          \
2289         .device         = x,                            \
2290         .subvendor      = PCI_ANY_ID,                   \
2291         .subdevice      = PCI_ANY_ID,                   \
2292         }
2293         ID(PCI_DEVICE_ID_INTEL_82443LX_0),
2294         ID(PCI_DEVICE_ID_INTEL_82443BX_0),
2295         ID(PCI_DEVICE_ID_INTEL_82443GX_0),
2296         ID(PCI_DEVICE_ID_INTEL_82810_MC1),
2297         ID(PCI_DEVICE_ID_INTEL_82810_MC3),
2298         ID(PCI_DEVICE_ID_INTEL_82810E_MC),
2299         ID(PCI_DEVICE_ID_INTEL_82815_MC),
2300         ID(PCI_DEVICE_ID_INTEL_82820_HB),
2301         ID(PCI_DEVICE_ID_INTEL_82820_UP_HB),
2302         ID(PCI_DEVICE_ID_INTEL_82830_HB),
2303         ID(PCI_DEVICE_ID_INTEL_82840_HB),
2304         ID(PCI_DEVICE_ID_INTEL_82845_HB),
2305         ID(PCI_DEVICE_ID_INTEL_82845G_HB),
2306         ID(PCI_DEVICE_ID_INTEL_82850_HB),
2307         ID(PCI_DEVICE_ID_INTEL_82855PM_HB),
2308         ID(PCI_DEVICE_ID_INTEL_82855GM_HB),
2309         ID(PCI_DEVICE_ID_INTEL_82860_HB),
2310         ID(PCI_DEVICE_ID_INTEL_82865_HB),
2311         ID(PCI_DEVICE_ID_INTEL_82875_HB),
2312         ID(PCI_DEVICE_ID_INTEL_7505_0),
2313         ID(PCI_DEVICE_ID_INTEL_7205_0),
2314         ID(PCI_DEVICE_ID_INTEL_E7221_HB),
2315         ID(PCI_DEVICE_ID_INTEL_82915G_HB),
2316         ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
2317         ID(PCI_DEVICE_ID_INTEL_82945G_HB),
2318         ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
2319         ID(PCI_DEVICE_ID_INTEL_82945GME_HB),
2320         ID(PCI_DEVICE_ID_INTEL_82946GZ_HB),
2321         ID(PCI_DEVICE_ID_INTEL_82G35_HB),
2322         ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
2323         ID(PCI_DEVICE_ID_INTEL_82965G_HB),
2324         ID(PCI_DEVICE_ID_INTEL_82965GM_HB),
2325         ID(PCI_DEVICE_ID_INTEL_82965GME_HB),
2326         ID(PCI_DEVICE_ID_INTEL_G33_HB),
2327         ID(PCI_DEVICE_ID_INTEL_Q35_HB),
2328         ID(PCI_DEVICE_ID_INTEL_Q33_HB),
2329         ID(PCI_DEVICE_ID_INTEL_GM45_HB),
2330         ID(PCI_DEVICE_ID_INTEL_IGD_E_HB),
2331         ID(PCI_DEVICE_ID_INTEL_Q45_HB),
2332         ID(PCI_DEVICE_ID_INTEL_G45_HB),
2333         { }
2334 };
2335
2336 MODULE_DEVICE_TABLE(pci, agp_intel_pci_table);
2337
2338 static struct pci_driver agp_intel_pci_driver = {
2339         .name           = "agpgart-intel",
2340         .id_table       = agp_intel_pci_table,
2341         .probe          = agp_intel_probe,
2342         .remove         = __devexit_p(agp_intel_remove),
2343 #ifdef CONFIG_PM
2344         .resume         = agp_intel_resume,
2345 #endif
2346 };
2347
2348 static int __init agp_intel_init(void)
2349 {
2350         if (agp_off)
2351                 return -EINVAL;
2352         return pci_register_driver(&agp_intel_pci_driver);
2353 }
2354
2355 static void __exit agp_intel_cleanup(void)
2356 {
2357         pci_unregister_driver(&agp_intel_pci_driver);
2358 }
2359
2360 module_init(agp_intel_init);
2361 module_exit(agp_intel_cleanup);
2362
2363 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
2364 MODULE_LICENSE("GPL and additional rights");