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