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 <asm/smp.h>
  12 #include "agp.h"
  13
  14 int intel_agp_enabled;
  15 EXPORT_SYMBOL(intel_agp_enabled);
  16
  17 /*
  18  * If we have Intel graphics, we're not going to have anything other than
  19  * an Intel IOMMU. So make the correct use of the PCI DMA API contingent
  20  * on the Intel IOMMU support (CONFIG_DMAR).
  21  * Only newer chipsets need to bother with this, of course.
  22  */
  23 #ifdef CONFIG_DMAR
  24 #define USE_PCI_DMA_API 1
  25 #endif
  26
  27 #define PCI_DEVICE_ID_INTEL_E7221_HB    0x2588
  28 #define PCI_DEVICE_ID_INTEL_E7221_IG    0x258a
  29 #define PCI_DEVICE_ID_INTEL_82946GZ_HB      0x2970
  30 #define PCI_DEVICE_ID_INTEL_82946GZ_IG      0x2972
  31 #define PCI_DEVICE_ID_INTEL_82G35_HB     0x2980
  32 #define PCI_DEVICE_ID_INTEL_82G35_IG     0x2982
  33 #define PCI_DEVICE_ID_INTEL_82965Q_HB       0x2990
  34 #define PCI_DEVICE_ID_INTEL_82965Q_IG       0x2992
  35 #define PCI_DEVICE_ID_INTEL_82965G_HB       0x29A0
  36 #define PCI_DEVICE_ID_INTEL_82965G_IG       0x29A2
  37 #define PCI_DEVICE_ID_INTEL_82965GM_HB      0x2A00
  38 #define PCI_DEVICE_ID_INTEL_82965GM_IG      0x2A02
  39 #define PCI_DEVICE_ID_INTEL_82965GME_HB     0x2A10
  40 #define PCI_DEVICE_ID_INTEL_82965GME_IG     0x2A12
  41 #define PCI_DEVICE_ID_INTEL_82945GME_HB     0x27AC
  42 #define PCI_DEVICE_ID_INTEL_82945GME_IG     0x27AE
  43 #define PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB        0xA010
  44 #define PCI_DEVICE_ID_INTEL_PINEVIEW_M_IG        0xA011
  45 #define PCI_DEVICE_ID_INTEL_PINEVIEW_HB         0xA000
  46 #define PCI_DEVICE_ID_INTEL_PINEVIEW_IG         0xA001
  47 #define PCI_DEVICE_ID_INTEL_G33_HB          0x29C0
  48 #define PCI_DEVICE_ID_INTEL_G33_IG          0x29C2
  49 #define PCI_DEVICE_ID_INTEL_Q35_HB          0x29B0
  50 #define PCI_DEVICE_ID_INTEL_Q35_IG          0x29B2
  51 #define PCI_DEVICE_ID_INTEL_Q33_HB          0x29D0
  52 #define PCI_DEVICE_ID_INTEL_Q33_IG          0x29D2
  53 #define PCI_DEVICE_ID_INTEL_B43_HB          0x2E40
  54 #define PCI_DEVICE_ID_INTEL_B43_IG          0x2E42
  55 #define PCI_DEVICE_ID_INTEL_GM45_HB         0x2A40
  56 #define PCI_DEVICE_ID_INTEL_GM45_IG         0x2A42
  57 #define PCI_DEVICE_ID_INTEL_EAGLELAKE_HB        0x2E00
  58 #define PCI_DEVICE_ID_INTEL_EAGLELAKE_IG        0x2E02
  59 #define PCI_DEVICE_ID_INTEL_Q45_HB          0x2E10
  60 #define PCI_DEVICE_ID_INTEL_Q45_IG          0x2E12
  61 #define PCI_DEVICE_ID_INTEL_G45_HB          0x2E20
  62 #define PCI_DEVICE_ID_INTEL_G45_IG          0x2E22
  63 #define PCI_DEVICE_ID_INTEL_G41_HB          0x2E30
  64 #define PCI_DEVICE_ID_INTEL_G41_IG          0x2E32
  65 #define PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB           0x0040
  66 #define PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG           0x0042
  67 #define PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB           0x0044
  68 #define PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB          0x0062
  69 #define PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB    0x006a
  70 #define PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG           0x0046
  71 #define PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB  0x0100
  72 #define PCI_DEVICE_ID_INTEL_SANDYBRIDGE_IG  0x0102
  73 #define PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB  0x0104
  74 #define PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_IG  0x0106
  75
  76 /* cover 915 and 945 variants */
  77 #define IS_I915 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB || \
  78                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB || \
  79                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB || \
  80                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB || \
  81                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || \
  82                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB)
  83
  84 #define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_HB || \
  85                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82G35_HB || \
  86                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \
  87                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB || \
  88                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB || \
  89                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GME_HB)
  90
  91 #define IS_G33 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G33_HB || \
  92                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \
  93                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q33_HB || \
  94                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB || \
  95                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_PINEVIEW_HB)
  96
  97 #define IS_PINEVIEW (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB || \
  98                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_PINEVIEW_HB)
  99
 100 #define IS_SNB (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || \
 101                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
 102
 103 #define IS_G4X (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_EAGLELAKE_HB || \
 104                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q45_HB || \
 105                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G45_HB || \
 106                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_GM45_HB || \
 107                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G41_HB || \
 108                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_B43_HB || \
 109                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB || \
 110                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB || \
 111                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB || \
 112                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB || \
 113                 IS_SNB)
 114
 115 extern int agp_memory_reserved;
 116
 117
 118 /* Intel 815 register */
 119 #define INTEL_815_APCONT        0x51
 120 #define INTEL_815_ATTBASE_MASK  ~0x1FFFFFFF
 121
 122 /* Intel i820 registers */
 123 #define INTEL_I820_RDCR         0x51
 124 #define INTEL_I820_ERRSTS       0xc8
 125
 126 /* Intel i840 registers */
 127 #define INTEL_I840_MCHCFG       0x50
 128 #define INTEL_I840_ERRSTS       0xc8
 129
 130 /* Intel i850 registers */
 131 #define INTEL_I850_MCHCFG       0x50
 132 #define INTEL_I850_ERRSTS       0xc8
 133
 134 /* intel 915G registers */
 135 #define I915_GMADDR     0x18
 136 #define I915_MMADDR     0x10
 137 #define I915_PTEADDR    0x1C
 138 #define I915_GMCH_GMS_STOLEN_48M        (0x6 << 4)
 139 #define I915_GMCH_GMS_STOLEN_64M        (0x7 << 4)
 140 #define G33_GMCH_GMS_STOLEN_128M        (0x8 << 4)
 141 #define G33_GMCH_GMS_STOLEN_256M        (0x9 << 4)
 142 #define INTEL_GMCH_GMS_STOLEN_96M       (0xa << 4)
 143 #define INTEL_GMCH_GMS_STOLEN_160M      (0xb << 4)
 144 #define INTEL_GMCH_GMS_STOLEN_224M      (0xc << 4)
 145 #define INTEL_GMCH_GMS_STOLEN_352M      (0xd << 4)
 146
 147 #define I915_IFPADDR    0x60
 148
 149 /* Intel 965G registers */
 150 #define I965_MSAC 0x62
 151 #define I965_IFPADDR    0x70
 152
 153 /* Intel 7505 registers */
 154 #define INTEL_I7505_APSIZE      0x74
 155 #define INTEL_I7505_NCAPID      0x60
 156 #define INTEL_I7505_NISTAT      0x6c
 157 #define INTEL_I7505_ATTBASE     0x78
 158 #define INTEL_I7505_ERRSTS      0x42
 159 #define INTEL_I7505_AGPCTRL     0x70
 160 #define INTEL_I7505_MCHCFG      0x50
 161
 162 #define SNB_GMCH_CTRL   0x50
 163 #define SNB_GMCH_GMS_STOLEN_MASK        0xF8
 164 #define SNB_GMCH_GMS_STOLEN_32M         (1 << 3)
 165 #define SNB_GMCH_GMS_STOLEN_64M         (2 << 3)
 166 #define SNB_GMCH_GMS_STOLEN_96M         (3 << 3)
 167 #define SNB_GMCH_GMS_STOLEN_128M        (4 << 3)
 168 #define SNB_GMCH_GMS_STOLEN_160M        (5 << 3)
 169 #define SNB_GMCH_GMS_STOLEN_192M        (6 << 3)
 170 #define SNB_GMCH_GMS_STOLEN_224M        (7 << 3)
 171 #define SNB_GMCH_GMS_STOLEN_256M        (8 << 3)
 172 #define SNB_GMCH_GMS_STOLEN_288M        (9 << 3)
 173 #define SNB_GMCH_GMS_STOLEN_320M        (0xa << 3)
 174 #define SNB_GMCH_GMS_STOLEN_352M        (0xb << 3)
 175 #define SNB_GMCH_GMS_STOLEN_384M        (0xc << 3)
 176 #define SNB_GMCH_GMS_STOLEN_416M        (0xd << 3)
 177 #define SNB_GMCH_GMS_STOLEN_448M        (0xe << 3)
 178 #define SNB_GMCH_GMS_STOLEN_480M        (0xf << 3)
 179 #define SNB_GMCH_GMS_STOLEN_512M        (0x10 << 3)
 180 #define SNB_GTT_SIZE_0M                 (0 << 8)
 181 #define SNB_GTT_SIZE_1M                 (1 << 8)
 182 #define SNB_GTT_SIZE_2M                 (2 << 8)
 183 #define SNB_GTT_SIZE_MASK               (3 << 8)
 184
 185 static const struct aper_size_info_fixed intel_i810_sizes[] =
 186 {
 187         {64, 16384, 4},
 188         /* The 32M mode still requires a 64k gatt */
 189         {32, 8192, 4}
 190 };
 191
 192 #define AGP_DCACHE_MEMORY       1
 193 #define AGP_PHYS_MEMORY         2
 194 #define INTEL_AGP_CACHED_MEMORY 3
 195
 196 static struct gatt_mask intel_i810_masks[] =
 197 {
 198         {.mask = I810_PTE_VALID, .type = 0},
 199         {.mask = (I810_PTE_VALID | I810_PTE_LOCAL), .type = AGP_DCACHE_MEMORY},
 200         {.mask = I810_PTE_VALID, .type = 0},
 201         {.mask = I810_PTE_VALID | I830_PTE_SYSTEM_CACHED,
 202          .type = INTEL_AGP_CACHED_MEMORY}
 203 };
 204
 205 static struct _intel_private {
 206         struct pci_dev *pcidev; /* device one */
 207         u8 __iomem *registers;
 208         u32 __iomem *gtt;               /* I915G */
 209         int num_dcache_entries;
 210         /* gtt_entries is the number of gtt entries that are already mapped
 211          * to stolen memory.  Stolen memory is larger than the memory mapped
 212          * through gtt_entries, as it includes some reserved space for the BIOS
 213          * popup and for the GTT.
 214          */
 215         int gtt_entries;                        /* i830+ */
 216         int gtt_total_size;
 217         union {
 218                 void __iomem *i9xx_flush_page;
 219                 void *i8xx_flush_page;
 220         };
 221         struct page *i8xx_page;
 222         struct resource ifp_resource;
 223         int resource_valid;
 224 } intel_private;
 225
 226 #ifdef USE_PCI_DMA_API
 227 static int intel_agp_map_page(struct page *page, dma_addr_t *ret)
 228 {
 229         *ret = pci_map_page(intel_private.pcidev, page, 0,
 230                             PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 231         if (pci_dma_mapping_error(intel_private.pcidev, *ret))
 232                 return -EINVAL;
 233         return 0;
 234 }
 235
 236 static void intel_agp_unmap_page(struct page *page, dma_addr_t dma)
 237 {
 238         pci_unmap_page(intel_private.pcidev, dma,
 239                        PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 240 }
 241
 242 static void intel_agp_free_sglist(struct agp_memory *mem)
 243 {
 244         struct sg_table st;
 245
 246         st.sgl = mem->sg_list;
 247         st.orig_nents = st.nents = mem->page_count;
 248
 249         sg_free_table(&st);
 250
 251         mem->sg_list = NULL;
 252         mem->num_sg = 0;
 253 }
 254
 255 static int intel_agp_map_memory(struct agp_memory *mem)
 256 {
 257         struct sg_table st;
 258         struct scatterlist *sg;
 259         int i;
 260
 261         DBG("try mapping %lu pages\n", (unsigned long)mem->page_count);
 262
 263         if (sg_alloc_table(&st, mem->page_count, GFP_KERNEL))
 264                 return -ENOMEM;
 265
 266         mem->sg_list = sg = st.sgl;
 267
 268         for (i = 0 ; i < mem->page_count; i++, sg = sg_next(sg))
 269                 sg_set_page(sg, mem->pages[i], PAGE_SIZE, 0);
 270
 271         mem->num_sg = pci_map_sg(intel_private.pcidev, mem->sg_list,
 272                                  mem->page_count, PCI_DMA_BIDIRECTIONAL);
 273         if (unlikely(!mem->num_sg)) {
 274                 intel_agp_free_sglist(mem);
 275                 return -ENOMEM;
 276         }
 277         return 0;
 278 }
 279
 280 static void intel_agp_unmap_memory(struct agp_memory *mem)
 281 {
 282         DBG("try unmapping %lu pages\n", (unsigned long)mem->page_count);
 283
 284         pci_unmap_sg(intel_private.pcidev, mem->sg_list,
 285                      mem->page_count, PCI_DMA_BIDIRECTIONAL);
 286         intel_agp_free_sglist(mem);
 287 }
 288
 289 static void intel_agp_insert_sg_entries(struct agp_memory *mem,
 290                                         off_t pg_start, int mask_type)
 291 {
 292         struct scatterlist *sg;
 293         int i, j;
 294
 295         j = pg_start;
 296
 297         WARN_ON(!mem->num_sg);
 298
 299         if (mem->num_sg == mem->page_count) {
 300                 for_each_sg(mem->sg_list, sg, mem->page_count, i) {
 301                         writel(agp_bridge->driver->mask_memory(agp_bridge,
 302                                         sg_dma_address(sg), mask_type),
 303                                         intel_private.gtt+j);
 304                         j++;
 305                 }
 306         } else {
 307                 /* sg may merge pages, but we have to separate
 308                  * per-page addr for GTT */
 309                 unsigned int len, m;
 310
 311                 for_each_sg(mem->sg_list, sg, mem->num_sg, i) {
 312                         len = sg_dma_len(sg) / PAGE_SIZE;
 313                         for (m = 0; m < len; m++) {
 314                                 writel(agp_bridge->driver->mask_memory(agp_bridge,
 315                                                                        sg_dma_address(sg) + m * PAGE_SIZE,
 316                                                                        mask_type),
 317                                        intel_private.gtt+j);
 318                                 j++;
 319                         }
 320                 }
 321         }
 322         readl(intel_private.gtt+j-1);
 323 }
 324
 325 #else
 326
 327 static void intel_agp_insert_sg_entries(struct agp_memory *mem,
 328                                         off_t pg_start, int mask_type)
 329 {
 330         int i, j;
 331         u32 cache_bits = 0;
 332
 333         if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB ||
 334             agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
 335         {
 336                 cache_bits = I830_PTE_SYSTEM_CACHED;
 337         }
 338
 339         for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
 340                 writel(agp_bridge->driver->mask_memory(agp_bridge,
 341                                 page_to_phys(mem->pages[i]), mask_type),
 342                        intel_private.gtt+j);
 343         }
 344
 345         readl(intel_private.gtt+j-1);
 346 }
 347
 348 #endif
 349
 350 static int intel_i810_fetch_size(void)
 351 {
 352         u32 smram_miscc;
 353         struct aper_size_info_fixed *values;
 354
 355         pci_read_config_dword(agp_bridge->dev, I810_SMRAM_MISCC, &smram_miscc);
 356         values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
 357
 358         if ((smram_miscc & I810_GMS) == I810_GMS_DISABLE) {
 359                 dev_warn(&agp_bridge->dev->dev, "i810 is disabled\n");
 360                 return 0;
 361         }
 362         if ((smram_miscc & I810_GFX_MEM_WIN_SIZE) == I810_GFX_MEM_WIN_32M) {
 363                 agp_bridge->previous_size =
 364                         agp_bridge->current_size = (void *) (values + 1);
 365                 agp_bridge->aperture_size_idx = 1;
 366                 return values[1].size;
 367         } else {
 368                 agp_bridge->previous_size =
 369                         agp_bridge->current_size = (void *) (values);
 370                 agp_bridge->aperture_size_idx = 0;
 371                 return values[0].size;
 372         }
 373
 374         return 0;
 375 }
 376
 377 static int intel_i810_configure(void)
 378 {
 379         struct aper_size_info_fixed *current_size;
 380         u32 temp;
 381         int i;
 382
 383         current_size = A_SIZE_FIX(agp_bridge->current_size);
 384
 385         if (!intel_private.registers) {
 386                 pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
 387                 temp &= 0xfff80000;
 388
 389                 intel_private.registers = ioremap(temp, 128 * 4096);
 390                 if (!intel_private.registers) {
 391                         dev_err(&intel_private.pcidev->dev,
 392                                 "can't remap memory\n");
 393                         return -ENOMEM;
 394                 }
 395         }
 396
 397         if ((readl(intel_private.registers+I810_DRAM_CTL)
 398                 & I810_DRAM_ROW_0) == I810_DRAM_ROW_0_SDRAM) {
 399                 /* This will need to be dynamically assigned */
 400                 dev_info(&intel_private.pcidev->dev,
 401                          "detected 4MB dedicated video ram\n");
 402                 intel_private.num_dcache_entries = 1024;
 403         }
 404         pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
 405         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
 406         writel(agp_bridge->gatt_bus_addr | I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
 407         readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
 408
 409         if (agp_bridge->driver->needs_scratch_page) {
 410                 for (i = 0; i < current_size->num_entries; i++) {
 411                         writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
 412                 }
 413                 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); /* PCI posting. */
 414         }
 415         global_cache_flush();
 416         return 0;
 417 }
 418
 419 static void intel_i810_cleanup(void)
 420 {
 421         writel(0, intel_private.registers+I810_PGETBL_CTL);
 422         readl(intel_private.registers); /* PCI Posting. */
 423         iounmap(intel_private.registers);
 424 }
 425
 426 static void intel_i810_tlbflush(struct agp_memory *mem)
 427 {
 428         return;
 429 }
 430
 431 static void intel_i810_agp_enable(struct agp_bridge_data *bridge, u32 mode)
 432 {
 433         return;
 434 }
 435
 436 /* Exists to support ARGB cursors */
 437 static struct page *i8xx_alloc_pages(void)
 438 {
 439         struct page *page;
 440
 441         page = alloc_pages(GFP_KERNEL | GFP_DMA32, 2);
 442         if (page == NULL)
 443                 return NULL;
 444
 445         if (set_pages_uc(page, 4) < 0) {
 446                 set_pages_wb(page, 4);
 447                 __free_pages(page, 2);
 448                 return NULL;
 449         }
 450         get_page(page);
 451         atomic_inc(&agp_bridge->current_memory_agp);
 452         return page;
 453 }
 454
 455 static void i8xx_destroy_pages(struct page *page)
 456 {
 457         if (page == NULL)
 458                 return;
 459
 460         set_pages_wb(page, 4);
 461         put_page(page);
 462         __free_pages(page, 2);
 463         atomic_dec(&agp_bridge->current_memory_agp);
 464 }
 465
 466 static int intel_i830_type_to_mask_type(struct agp_bridge_data *bridge,
 467                                         int type)
 468 {
 469         if (type < AGP_USER_TYPES)
 470                 return type;
 471         else if (type == AGP_USER_CACHED_MEMORY)
 472                 return INTEL_AGP_CACHED_MEMORY;
 473         else
 474                 return 0;
 475 }
 476
 477 static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
 478                                 int type)
 479 {
 480         int i, j, num_entries;
 481         void *temp;
 482         int ret = -EINVAL;
 483         int mask_type;
 484
 485         if (mem->page_count == 0)
 486                 goto out;
 487
 488         temp = agp_bridge->current_size;
 489         num_entries = A_SIZE_FIX(temp)->num_entries;
 490
 491         if ((pg_start + mem->page_count) > num_entries)
 492                 goto out_err;
 493
 494
 495         for (j = pg_start; j < (pg_start + mem->page_count); j++) {
 496                 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j))) {
 497                         ret = -EBUSY;
 498                         goto out_err;
 499                 }
 500         }
 501
 502         if (type != mem->type)
 503                 goto out_err;
 504
 505         mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
 506
 507         switch (mask_type) {
 508         case AGP_DCACHE_MEMORY:
 509                 if (!mem->is_flushed)
 510                         global_cache_flush();
 511                 for (i = pg_start; i < (pg_start + mem->page_count); i++) {
 512                         writel((i*4096)|I810_PTE_LOCAL|I810_PTE_VALID,
 513                                intel_private.registers+I810_PTE_BASE+(i*4));
 514                 }
 515                 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
 516                 break;
 517         case AGP_PHYS_MEMORY:
 518         case AGP_NORMAL_MEMORY:
 519                 if (!mem->is_flushed)
 520                         global_cache_flush();
 521                 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
 522                         writel(agp_bridge->driver->mask_memory(agp_bridge,
 523                                         page_to_phys(mem->pages[i]), mask_type),
 524                                intel_private.registers+I810_PTE_BASE+(j*4));
 525                 }
 526                 readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
 527                 break;
 528         default:
 529                 goto out_err;
 530         }
 531
 532         agp_bridge->driver->tlb_flush(mem);
 533 out:
 534         ret = 0;
 535 out_err:
 536         mem->is_flushed = true;
 537         return ret;
 538 }
 539
 540 static int intel_i810_remove_entries(struct agp_memory *mem, off_t pg_start,
 541                                 int type)
 542 {
 543         int i;
 544
 545         if (mem->page_count == 0)
 546                 return 0;
 547
 548         for (i = pg_start; i < (mem->page_count + pg_start); i++) {
 549                 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
 550         }
 551         readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
 552
 553         agp_bridge->driver->tlb_flush(mem);
 554         return 0;
 555 }
 556
 557 /*
 558  * The i810/i830 requires a physical address to program its mouse
 559  * pointer into hardware.
 560  * However the Xserver still writes to it through the agp aperture.
 561  */
 562 static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type)
 563 {
 564         struct agp_memory *new;
 565         struct page *page;
 566
 567         switch (pg_count) {
 568         case 1: page = agp_bridge->driver->agp_alloc_page(agp_bridge);
 569                 break;
 570         case 4:
 571                 /* kludge to get 4 physical pages for ARGB cursor */
 572                 page = i8xx_alloc_pages();
 573                 break;
 574         default:
 575                 return NULL;
 576         }
 577
 578         if (page == NULL)
 579                 return NULL;
 580
 581         new = agp_create_memory(pg_count);
 582         if (new == NULL)
 583                 return NULL;
 584
 585         new->pages[0] = page;
 586         if (pg_count == 4) {
 587                 /* kludge to get 4 physical pages for ARGB cursor */
 588                 new->pages[1] = new->pages[0] + 1;
 589                 new->pages[2] = new->pages[1] + 1;
 590                 new->pages[3] = new->pages[2] + 1;
 591         }
 592         new->page_count = pg_count;
 593         new->num_scratch_pages = pg_count;
 594         new->type = AGP_PHYS_MEMORY;
 595         new->physical = page_to_phys(new->pages[0]);
 596         return new;
 597 }
 598
 599 static struct agp_memory *intel_i810_alloc_by_type(size_t pg_count, int type)
 600 {
 601         struct agp_memory *new;
 602
 603         if (type == AGP_DCACHE_MEMORY) {
 604                 if (pg_count != intel_private.num_dcache_entries)
 605                         return NULL;
 606
 607                 new = agp_create_memory(1);
 608                 if (new == NULL)
 609                         return NULL;
 610
 611                 new->type = AGP_DCACHE_MEMORY;
 612                 new->page_count = pg_count;
 613                 new->num_scratch_pages = 0;
 614                 agp_free_page_array(new);
 615                 return new;
 616         }
 617         if (type == AGP_PHYS_MEMORY)
 618                 return alloc_agpphysmem_i8xx(pg_count, type);
 619         return NULL;
 620 }
 621
 622 static void intel_i810_free_by_type(struct agp_memory *curr)
 623 {
 624         agp_free_key(curr->key);
 625         if (curr->type == AGP_PHYS_MEMORY) {
 626                 if (curr->page_count == 4)
 627                         i8xx_destroy_pages(curr->pages[0]);
 628                 else {
 629                         agp_bridge->driver->agp_destroy_page(curr->pages[0],
 630                                                              AGP_PAGE_DESTROY_UNMAP);
 631                         agp_bridge->driver->agp_destroy_page(curr->pages[0],
 632                                                              AGP_PAGE_DESTROY_FREE);
 633                 }
 634                 agp_free_page_array(curr);
 635         }
 636         kfree(curr);
 637 }
 638
 639 static unsigned long intel_i810_mask_memory(struct agp_bridge_data *bridge,
 640                                             dma_addr_t addr, int type)
 641 {
 642         /* Type checking must be done elsewhere */
 643         return addr | bridge->driver->masks[type].mask;
 644 }
 645
 646 static struct aper_size_info_fixed intel_i830_sizes[] =
 647 {
 648         {128, 32768, 5},
 649         /* The 64M mode still requires a 128k gatt */
 650         {64, 16384, 5},
 651         {256, 65536, 6},
 652         {512, 131072, 7},
 653 };
 654
 655 static void intel_i830_init_gtt_entries(void)
 656 {
 657         u16 gmch_ctrl;
 658         int gtt_entries = 0;
 659         u8 rdct;
 660         int local = 0;
 661         static const int ddt[4] = { 0, 16, 32, 64 };
 662         int size; /* reserved space (in kb) at the top of stolen memory */
 663
 664         pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 665
 666         if (IS_I965) {
 667                 u32 pgetbl_ctl;
 668                 pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL);
 669
 670                 /* The 965 has a field telling us the size of the GTT,
 671                  * which may be larger than what is necessary to map the
 672                  * aperture.
 673                  */
 674                 switch (pgetbl_ctl & I965_PGETBL_SIZE_MASK) {
 675                 case I965_PGETBL_SIZE_128KB:
 676                         size = 128;
 677                         break;
 678                 case I965_PGETBL_SIZE_256KB:
 679                         size = 256;
 680                         break;
 681                 case I965_PGETBL_SIZE_512KB:
 682                         size = 512;
 683                         break;
 684                 case I965_PGETBL_SIZE_1MB:
 685                         size = 1024;
 686                         break;
 687                 case I965_PGETBL_SIZE_2MB:
 688                         size = 2048;
 689                         break;
 690                 case I965_PGETBL_SIZE_1_5MB:
 691                         size = 1024 + 512;
 692                         break;
 693                 default:
 694                         dev_info(&intel_private.pcidev->dev,
 695                                  "unknown page table size, assuming 512KB\n");
 696                         size = 512;
 697                 }
 698                 size += 4; /* add in BIOS popup space */
 699         } else if (IS_G33 && !IS_PINEVIEW) {
 700         /* G33's GTT size defined in gmch_ctrl */
 701                 switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) {
 702                 case G33_PGETBL_SIZE_1M:
 703                         size = 1024;
 704                         break;
 705                 case G33_PGETBL_SIZE_2M:
 706                         size = 2048;
 707                         break;
 708                 default:
 709                         dev_info(&agp_bridge->dev->dev,
 710                                  "unknown page table size 0x%x, assuming 512KB\n",
 711                                 (gmch_ctrl & G33_PGETBL_SIZE_MASK));
 712                         size = 512;
 713                 }
 714                 size += 4;
 715         } else if (IS_G4X || IS_PINEVIEW) {
 716                 /* On 4 series hardware, GTT stolen is separate from graphics
 717                  * stolen, ignore it in stolen gtt entries counting.  However,
 718                  * 4KB of the stolen memory doesn't get mapped to the GTT.
 719                  */
 720                 size = 4;
 721         } else {
 722                 /* On previous hardware, the GTT size was just what was
 723                  * required to map the aperture.
 724                  */
 725                 size = agp_bridge->driver->fetch_size() + 4;
 726         }
 727
 728         if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB ||
 729             agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) {
 730                 switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
 731                 case I830_GMCH_GMS_STOLEN_512:
 732                         gtt_entries = KB(512) - KB(size);
 733                         break;
 734                 case I830_GMCH_GMS_STOLEN_1024:
 735                         gtt_entries = MB(1) - KB(size);
 736                         break;
 737                 case I830_GMCH_GMS_STOLEN_8192:
 738                         gtt_entries = MB(8) - KB(size);
 739                         break;
 740                 case I830_GMCH_GMS_LOCAL:
 741                         rdct = readb(intel_private.registers+I830_RDRAM_CHANNEL_TYPE);
 742                         gtt_entries = (I830_RDRAM_ND(rdct) + 1) *
 743                                         MB(ddt[I830_RDRAM_DDT(rdct)]);
 744                         local = 1;
 745                         break;
 746                 default:
 747                         gtt_entries = 0;
 748                         break;
 749                 }
 750         } else if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB ||
 751                    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB) {
 752                 /*
 753                  * SandyBridge has new memory control reg at 0x50.w
 754                  */
 755                 u16 snb_gmch_ctl;
 756                 pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl);
 757                 switch (snb_gmch_ctl & SNB_GMCH_GMS_STOLEN_MASK) {
 758                 case SNB_GMCH_GMS_STOLEN_32M:
 759                         gtt_entries = MB(32) - KB(size);
 760                         break;
 761                 case SNB_GMCH_GMS_STOLEN_64M:
 762                         gtt_entries = MB(64) - KB(size);
 763                         break;
 764                 case SNB_GMCH_GMS_STOLEN_96M:
 765                         gtt_entries = MB(96) - KB(size);
 766                         break;
 767                 case SNB_GMCH_GMS_STOLEN_128M:
 768                         gtt_entries = MB(128) - KB(size);
 769                         break;
 770                 case SNB_GMCH_GMS_STOLEN_160M:
 771                         gtt_entries = MB(160) - KB(size);
 772                         break;
 773                 case SNB_GMCH_GMS_STOLEN_192M:
 774                         gtt_entries = MB(192) - KB(size);
 775                         break;
 776                 case SNB_GMCH_GMS_STOLEN_224M:
 777                         gtt_entries = MB(224) - KB(size);
 778                         break;
 779                 case SNB_GMCH_GMS_STOLEN_256M:
 780                         gtt_entries = MB(256) - KB(size);
 781                         break;
 782                 case SNB_GMCH_GMS_STOLEN_288M:
 783                         gtt_entries = MB(288) - KB(size);
 784                         break;
 785                 case SNB_GMCH_GMS_STOLEN_320M:
 786                         gtt_entries = MB(320) - KB(size);
 787                         break;
 788                 case SNB_GMCH_GMS_STOLEN_352M:
 789                         gtt_entries = MB(352) - KB(size);
 790                         break;
 791                 case SNB_GMCH_GMS_STOLEN_384M:
 792                         gtt_entries = MB(384) - KB(size);
 793                         break;
 794                 case SNB_GMCH_GMS_STOLEN_416M:
 795                         gtt_entries = MB(416) - KB(size);
 796                         break;
 797                 case SNB_GMCH_GMS_STOLEN_448M:
 798                         gtt_entries = MB(448) - KB(size);
 799                         break;
 800                 case SNB_GMCH_GMS_STOLEN_480M:
 801                         gtt_entries = MB(480) - KB(size);
 802                         break;
 803                 case SNB_GMCH_GMS_STOLEN_512M:
 804                         gtt_entries = MB(512) - KB(size);
 805                         break;
 806                 }
 807         } else {
 808                 switch (gmch_ctrl & I855_GMCH_GMS_MASK) {
 809                 case I855_GMCH_GMS_STOLEN_1M:
 810                         gtt_entries = MB(1) - KB(size);
 811                         break;
 812                 case I855_GMCH_GMS_STOLEN_4M:
 813                         gtt_entries = MB(4) - KB(size);
 814                         break;
 815                 case I855_GMCH_GMS_STOLEN_8M:
 816                         gtt_entries = MB(8) - KB(size);
 817                         break;
 818                 case I855_GMCH_GMS_STOLEN_16M:
 819                         gtt_entries = MB(16) - KB(size);
 820                         break;
 821                 case I855_GMCH_GMS_STOLEN_32M:
 822                         gtt_entries = MB(32) - KB(size);
 823                         break;
 824                 case I915_GMCH_GMS_STOLEN_48M:
 825                         /* Check it's really I915G */
 826                         if (IS_I915 || IS_I965 || IS_G33 || IS_G4X)
 827                                 gtt_entries = MB(48) - KB(size);
 828                         else
 829                                 gtt_entries = 0;
 830                         break;
 831                 case I915_GMCH_GMS_STOLEN_64M:
 832                         /* Check it's really I915G */
 833                         if (IS_I915 || IS_I965 || IS_G33 || IS_G4X)
 834                                 gtt_entries = MB(64) - KB(size);
 835                         else
 836                                 gtt_entries = 0;
 837                         break;
 838                 case G33_GMCH_GMS_STOLEN_128M:
 839                         if (IS_G33 || IS_I965 || IS_G4X)
 840                                 gtt_entries = MB(128) - KB(size);
 841                         else
 842                                 gtt_entries = 0;
 843                         break;
 844                 case G33_GMCH_GMS_STOLEN_256M:
 845                         if (IS_G33 || IS_I965 || IS_G4X)
 846                                 gtt_entries = MB(256) - KB(size);
 847                         else
 848                                 gtt_entries = 0;
 849                         break;
 850                 case INTEL_GMCH_GMS_STOLEN_96M:
 851                         if (IS_I965 || IS_G4X)
 852                                 gtt_entries = MB(96) - KB(size);
 853                         else
 854                                 gtt_entries = 0;
 855                         break;
 856                 case INTEL_GMCH_GMS_STOLEN_160M:
 857                         if (IS_I965 || IS_G4X)
 858                                 gtt_entries = MB(160) - KB(size);
 859                         else
 860                                 gtt_entries = 0;
 861                         break;
 862                 case INTEL_GMCH_GMS_STOLEN_224M:
 863                         if (IS_I965 || IS_G4X)
 864                                 gtt_entries = MB(224) - KB(size);
 865                         else
 866                                 gtt_entries = 0;
 867                         break;
 868                 case INTEL_GMCH_GMS_STOLEN_352M:
 869                         if (IS_I965 || IS_G4X)
 870                                 gtt_entries = MB(352) - KB(size);
 871                         else
 872                                 gtt_entries = 0;
 873                         break;
 874                 default:
 875                         gtt_entries = 0;
 876                         break;
 877                 }
 878         }
 879         if (gtt_entries > 0) {
 880                 dev_info(&agp_bridge->dev->dev, "detected %dK %s memory\n",
 881                        gtt_entries / KB(1), local ? "local" : "stolen");
 882                 gtt_entries /= KB(4);
 883         } else {
 884                 dev_info(&agp_bridge->dev->dev,
 885                        "no pre-allocated video memory detected\n");
 886                 gtt_entries = 0;
 887         }
 888
 889         intel_private.gtt_entries = gtt_entries;
 890 }
 891
 892 static void intel_i830_fini_flush(void)
 893 {
 894         kunmap(intel_private.i8xx_page);
 895         intel_private.i8xx_flush_page = NULL;
 896         unmap_page_from_agp(intel_private.i8xx_page);
 897
 898         __free_page(intel_private.i8xx_page);
 899         intel_private.i8xx_page = NULL;
 900 }
 901
 902 static void intel_i830_setup_flush(void)
 903 {
 904         /* return if we've already set the flush mechanism up */
 905         if (intel_private.i8xx_page)
 906                 return;
 907
 908         intel_private.i8xx_page = alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA32);
 909         if (!intel_private.i8xx_page)
 910                 return;
 911
 912         intel_private.i8xx_flush_page = kmap(intel_private.i8xx_page);
 913         if (!intel_private.i8xx_flush_page)
 914                 intel_i830_fini_flush();
 915 }
 916
 917 /* The chipset_flush interface needs to get data that has already been
 918  * flushed out of the CPU all the way out to main memory, because the GPU
 919  * doesn't snoop those buffers.
 920  *
 921  * The 8xx series doesn't have the same lovely interface for flushing the
 922  * chipset write buffers that the later chips do. According to the 865
 923  * specs, it's 64 octwords, or 1KB.  So, to get those previous things in
 924  * that buffer out, we just fill 1KB and clflush it out, on the assumption
 925  * that it'll push whatever was in there out.  It appears to work.
 926  */
 927 static void intel_i830_chipset_flush(struct agp_bridge_data *bridge)
 928 {
 929         unsigned int *pg = intel_private.i8xx_flush_page;
 930
 931         memset(pg, 0, 1024);
 932
 933         if (cpu_has_clflush)
 934                 clflush_cache_range(pg, 1024);
 935         else if (wbinvd_on_all_cpus() != 0)
 936                 printk(KERN_ERR "Timed out waiting for cache flush.\n");
 937 }
 938
 939 /* The intel i830 automatically initializes the agp aperture during POST.
 940  * Use the memory already set aside for in the GTT.
 941  */
 942 static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
 943 {
 944         int page_order;
 945         struct aper_size_info_fixed *size;
 946         int num_entries;
 947         u32 temp;
 948
 949         size = agp_bridge->current_size;
 950         page_order = size->page_order;
 951         num_entries = size->num_entries;
 952         agp_bridge->gatt_table_real = NULL;
 953
 954         pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
 955         temp &= 0xfff80000;
 956
 957         intel_private.registers = ioremap(temp, 128 * 4096);
 958         if (!intel_private.registers)
 959                 return -ENOMEM;
 960
 961         temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
 962         global_cache_flush();   /* FIXME: ?? */
 963
 964         /* we have to call this as early as possible after the MMIO base address is known */
 965         intel_i830_init_gtt_entries();
 966
 967         agp_bridge->gatt_table = NULL;
 968
 969         agp_bridge->gatt_bus_addr = temp;
 970
 971         return 0;
 972 }
 973
 974 /* Return the gatt table to a sane state. Use the top of stolen
 975  * memory for the GTT.
 976  */
 977 static int intel_i830_free_gatt_table(struct agp_bridge_data *bridge)
 978 {
 979         return 0;
 980 }
 981
 982 static int intel_i830_fetch_size(void)
 983 {
 984         u16 gmch_ctrl;
 985         struct aper_size_info_fixed *values;
 986
 987         values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
 988
 989         if (agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82830_HB &&
 990             agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82845G_HB) {
 991                 /* 855GM/852GM/865G has 128MB aperture size */
 992                 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
 993                 agp_bridge->aperture_size_idx = 0;
 994                 return values[0].size;
 995         }
 996
 997         pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 998
 999         if ((gmch_ctrl & I830_GMCH_MEM_MASK) == I830_GMCH_MEM_128M) {
1000                 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
1001                 agp_bridge->aperture_size_idx = 0;
1002                 return values[0].size;
1003         } else {
1004                 agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + 1);
1005                 agp_bridge->aperture_size_idx = 1;
1006                 return values[1].size;
1007         }
1008
1009         return 0;
1010 }
1011
1012 static int intel_i830_configure(void)
1013 {
1014         struct aper_size_info_fixed *current_size;
1015         u32 temp;
1016         u16 gmch_ctrl;
1017         int i;
1018
1019         current_size = A_SIZE_FIX(agp_bridge->current_size);
1020
1021         pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
1022         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1023
1024         pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
1025         gmch_ctrl |= I830_GMCH_ENABLED;
1026         pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
1027
1028         writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
1029         readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
1030
1031         if (agp_bridge->driver->needs_scratch_page) {
1032                 for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
1033                         writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
1034                 }
1035                 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); /* PCI Posting. */
1036         }
1037
1038         global_cache_flush();
1039
1040         intel_i830_setup_flush();
1041         return 0;
1042 }
1043
1044 static void intel_i830_cleanup(void)
1045 {
1046         iounmap(intel_private.registers);
1047 }
1048
1049 static int intel_i830_insert_entries(struct agp_memory *mem, off_t pg_start,
1050                                      int type)
1051 {
1052         int i, j, num_entries;
1053         void *temp;
1054         int ret = -EINVAL;
1055         int mask_type;
1056
1057         if (mem->page_count == 0)
1058                 goto out;
1059
1060         temp = agp_bridge->current_size;
1061         num_entries = A_SIZE_FIX(temp)->num_entries;
1062
1063         if (pg_start < intel_private.gtt_entries) {
1064                 dev_printk(KERN_DEBUG, &intel_private.pcidev->dev,
1065                            "pg_start == 0x%.8lx, intel_private.gtt_entries == 0x%.8x\n",
1066                            pg_start, intel_private.gtt_entries);
1067
1068                 dev_info(&intel_private.pcidev->dev,
1069                          "trying to insert into local/stolen memory\n");
1070                 goto out_err;
1071         }
1072
1073         if ((pg_start + mem->page_count) > num_entries)
1074                 goto out_err;
1075
1076         /* The i830 can't check the GTT for entries since its read only,
1077          * depend on the caller to make the correct offset decisions.
1078          */
1079
1080         if (type != mem->type)
1081                 goto out_err;
1082
1083         mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
1084
1085         if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
1086             mask_type != INTEL_AGP_CACHED_MEMORY)
1087                 goto out_err;
1088
1089         if (!mem->is_flushed)
1090                 global_cache_flush();
1091
1092         for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
1093                 writel(agp_bridge->driver->mask_memory(agp_bridge,
1094                                 page_to_phys(mem->pages[i]), mask_type),
1095                        intel_private.registers+I810_PTE_BASE+(j*4));
1096         }
1097         readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
1098         agp_bridge->driver->tlb_flush(mem);
1099
1100 out:
1101         ret = 0;
1102 out_err:
1103         mem->is_flushed = true;
1104         return ret;
1105 }
1106
1107 static int intel_i830_remove_entries(struct agp_memory *mem, off_t pg_start,
1108                                      int type)
1109 {
1110         int i;
1111
1112         if (mem->page_count == 0)
1113                 return 0;
1114
1115         if (pg_start < intel_private.gtt_entries) {
1116                 dev_info(&intel_private.pcidev->dev,
1117                          "trying to disable local/stolen memory\n");
1118                 return -EINVAL;
1119         }
1120
1121         for (i = pg_start; i < (mem->page_count + pg_start); i++) {
1122                 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
1123         }
1124         readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
1125
1126         agp_bridge->driver->tlb_flush(mem);
1127         return 0;
1128 }
1129
1130 static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count, int type)
1131 {
1132         if (type == AGP_PHYS_MEMORY)
1133                 return alloc_agpphysmem_i8xx(pg_count, type);
1134         /* always return NULL for other allocation types for now */
1135         return NULL;
1136 }
1137
1138 static int intel_alloc_chipset_flush_resource(void)
1139 {
1140         int ret;
1141         ret = pci_bus_alloc_resource(agp_bridge->dev->bus, &intel_private.ifp_resource, PAGE_SIZE,
1142                                      PAGE_SIZE, PCIBIOS_MIN_MEM, 0,
1143                                      pcibios_align_resource, agp_bridge->dev);
1144
1145         return ret;
1146 }
1147
1148 static void intel_i915_setup_chipset_flush(void)
1149 {
1150         int ret;
1151         u32 temp;
1152
1153         pci_read_config_dword(agp_bridge->dev, I915_IFPADDR, &temp);
1154         if (!(temp & 0x1)) {
1155                 intel_alloc_chipset_flush_resource();
1156                 intel_private.resource_valid = 1;
1157                 pci_write_config_dword(agp_bridge->dev, I915_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
1158         } else {
1159                 temp &= ~1;
1160
1161                 intel_private.resource_valid = 1;
1162                 intel_private.ifp_resource.start = temp;
1163                 intel_private.ifp_resource.end = temp + PAGE_SIZE;
1164                 ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
1165                 /* some BIOSes reserve this area in a pnp some don't */
1166                 if (ret)
1167                         intel_private.resource_valid = 0;
1168         }
1169 }
1170
1171 static void intel_i965_g33_setup_chipset_flush(void)
1172 {
1173         u32 temp_hi, temp_lo;
1174         int ret;
1175
1176         pci_read_config_dword(agp_bridge->dev, I965_IFPADDR + 4, &temp_hi);
1177         pci_read_config_dword(agp_bridge->dev, I965_IFPADDR, &temp_lo);
1178
1179         if (!(temp_lo & 0x1)) {
1180
1181                 intel_alloc_chipset_flush_resource();
1182
1183                 intel_private.resource_valid = 1;
1184                 pci_write_config_dword(agp_bridge->dev, I965_IFPADDR + 4,
1185                         upper_32_bits(intel_private.ifp_resource.start));
1186                 pci_write_config_dword(agp_bridge->dev, I965_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
1187         } else {
1188                 u64 l64;
1189
1190                 temp_lo &= ~0x1;
1191                 l64 = ((u64)temp_hi << 32) | temp_lo;
1192
1193                 intel_private.resource_valid = 1;
1194                 intel_private.ifp_resource.start = l64;
1195                 intel_private.ifp_resource.end = l64 + PAGE_SIZE;
1196                 ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
1197                 /* some BIOSes reserve this area in a pnp some don't */
1198                 if (ret)
1199                         intel_private.resource_valid = 0;
1200         }
1201 }
1202
1203 static void intel_i9xx_setup_flush(void)
1204 {
1205         /* return if already configured */
1206         if (intel_private.ifp_resource.start)
1207                 return;
1208
1209         if (IS_SNB)
1210                 return;
1211
1212         /* setup a resource for this object */
1213         intel_private.ifp_resource.name = "Intel Flush Page";
1214         intel_private.ifp_resource.flags = IORESOURCE_MEM;
1215
1216         /* Setup chipset flush for 915 */
1217         if (IS_I965 || IS_G33 || IS_G4X) {
1218                 intel_i965_g33_setup_chipset_flush();
1219         } else {
1220                 intel_i915_setup_chipset_flush();
1221         }
1222
1223         if (intel_private.ifp_resource.start) {
1224                 intel_private.i9xx_flush_page = ioremap_nocache(intel_private.ifp_resource.start, PAGE_SIZE);
1225                 if (!intel_private.i9xx_flush_page)
1226                         dev_info(&intel_private.pcidev->dev, "can't ioremap flush page - no chipset flushing");
1227         }
1228 }
1229
1230 static int intel_i915_configure(void)
1231 {
1232         struct aper_size_info_fixed *current_size;
1233         u32 temp;
1234         u16 gmch_ctrl;
1235         int i;
1236
1237         current_size = A_SIZE_FIX(agp_bridge->current_size);
1238
1239         pci_read_config_dword(intel_private.pcidev, I915_GMADDR, &temp);
1240
1241         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1242
1243         pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
1244         gmch_ctrl |= I830_GMCH_ENABLED;
1245         pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
1246
1247         writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
1248         readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
1249
1250         if (agp_bridge->driver->needs_scratch_page) {
1251                 for (i = intel_private.gtt_entries; i < intel_private.gtt_total_size; i++) {
1252                         writel(agp_bridge->scratch_page, intel_private.gtt+i);
1253                 }
1254                 readl(intel_private.gtt+i-1);   /* PCI Posting. */
1255         }
1256
1257         global_cache_flush();
1258
1259         intel_i9xx_setup_flush();
1260
1261         return 0;
1262 }
1263
1264 static void intel_i915_cleanup(void)
1265 {
1266         if (intel_private.i9xx_flush_page)
1267                 iounmap(intel_private.i9xx_flush_page);
1268         if (intel_private.resource_valid)
1269                 release_resource(&intel_private.ifp_resource);
1270         intel_private.ifp_resource.start = 0;
1271         intel_private.resource_valid = 0;
1272         iounmap(intel_private.gtt);
1273         iounmap(intel_private.registers);
1274 }
1275
1276 static void intel_i915_chipset_flush(struct agp_bridge_data *bridge)
1277 {
1278         if (intel_private.i9xx_flush_page)
1279                 writel(1, intel_private.i9xx_flush_page);
1280 }
1281
1282 static int intel_i915_insert_entries(struct agp_memory *mem, off_t pg_start,
1283                                      int type)
1284 {
1285         int num_entries;
1286         void *temp;
1287         int ret = -EINVAL;
1288         int mask_type;
1289
1290         if (mem->page_count == 0)
1291                 goto out;
1292
1293         temp = agp_bridge->current_size;
1294         num_entries = A_SIZE_FIX(temp)->num_entries;
1295
1296         if (pg_start < intel_private.gtt_entries) {
1297                 dev_printk(KERN_DEBUG, &intel_private.pcidev->dev,
1298                            "pg_start == 0x%.8lx, intel_private.gtt_entries == 0x%.8x\n",
1299                            pg_start, intel_private.gtt_entries);
1300
1301                 dev_info(&intel_private.pcidev->dev,
1302                          "trying to insert into local/stolen memory\n");
1303                 goto out_err;
1304         }
1305
1306         if ((pg_start + mem->page_count) > num_entries)
1307                 goto out_err;
1308
1309         /* The i915 can't check the GTT for entries since it's read only;
1310          * depend on the caller to make the correct offset decisions.
1311          */
1312
1313         if (type != mem->type)
1314                 goto out_err;
1315
1316         mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
1317
1318         if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
1319             mask_type != INTEL_AGP_CACHED_MEMORY)
1320                 goto out_err;
1321
1322         if (!mem->is_flushed)
1323                 global_cache_flush();
1324
1325         intel_agp_insert_sg_entries(mem, pg_start, mask_type);
1326         agp_bridge->driver->tlb_flush(mem);
1327
1328  out:
1329         ret = 0;
1330  out_err:
1331         mem->is_flushed = true;
1332         return ret;
1333 }
1334
1335 static int intel_i915_remove_entries(struct agp_memory *mem, off_t pg_start,
1336                                      int type)
1337 {
1338         int i;
1339
1340         if (mem->page_count == 0)
1341                 return 0;
1342
1343         if (pg_start < intel_private.gtt_entries) {
1344                 dev_info(&intel_private.pcidev->dev,
1345                          "trying to disable local/stolen memory\n");
1346                 return -EINVAL;
1347         }
1348
1349         for (i = pg_start; i < (mem->page_count + pg_start); i++)
1350                 writel(agp_bridge->scratch_page, intel_private.gtt+i);
1351
1352         readl(intel_private.gtt+i-1);
1353
1354         agp_bridge->driver->tlb_flush(mem);
1355         return 0;
1356 }
1357
1358 /* Return the aperture size by just checking the resource length.  The effect
1359  * described in the spec of the MSAC registers is just changing of the
1360  * resource size.
1361  */
1362 static int intel_i9xx_fetch_size(void)
1363 {
1364         int num_sizes = ARRAY_SIZE(intel_i830_sizes);
1365         int aper_size; /* size in megabytes */
1366         int i;
1367
1368         aper_size = pci_resource_len(intel_private.pcidev, 2) / MB(1);
1369
1370         for (i = 0; i < num_sizes; i++) {
1371                 if (aper_size == intel_i830_sizes[i].size) {
1372                         agp_bridge->current_size = intel_i830_sizes + i;
1373                         agp_bridge->previous_size = agp_bridge->current_size;
1374                         return aper_size;
1375                 }
1376         }
1377
1378         return 0;
1379 }
1380
1381 /* The intel i915 automatically initializes the agp aperture during POST.
1382  * Use the memory already set aside for in the GTT.
1383  */
1384 static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
1385 {
1386         int page_order;
1387         struct aper_size_info_fixed *size;
1388         int num_entries;
1389         u32 temp, temp2;
1390         int gtt_map_size = 256 * 1024;
1391
1392         size = agp_bridge->current_size;
1393         page_order = size->page_order;
1394         num_entries = size->num_entries;
1395         agp_bridge->gatt_table_real = NULL;
1396
1397         pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
1398         pci_read_config_dword(intel_private.pcidev, I915_PTEADDR, &temp2);
1399
1400         if (IS_G33)
1401             gtt_map_size = 1024 * 1024; /* 1M on G33 */
1402         intel_private.gtt = ioremap(temp2, gtt_map_size);
1403         if (!intel_private.gtt)
1404                 return -ENOMEM;
1405
1406         intel_private.gtt_total_size = gtt_map_size / 4;
1407
1408         temp &= 0xfff80000;
1409
1410         intel_private.registers = ioremap(temp, 128 * 4096);
1411         if (!intel_private.registers) {
1412                 iounmap(intel_private.gtt);
1413                 return -ENOMEM;
1414         }
1415
1416         temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
1417         global_cache_flush();   /* FIXME: ? */
1418
1419         /* we have to call this as early as possible after the MMIO base address is known */
1420         intel_i830_init_gtt_entries();
1421
1422         agp_bridge->gatt_table = NULL;
1423
1424         agp_bridge->gatt_bus_addr = temp;
1425
1426         return 0;
1427 }
1428
1429 /*
1430  * The i965 supports 36-bit physical addresses, but to keep
1431  * the format of the GTT the same, the bits that don't fit
1432  * in a 32-bit word are shifted down to bits 4..7.
1433  *
1434  * Gcc is smart enough to notice that "(addr >> 28) & 0xf0"
1435  * is always zero on 32-bit architectures, so no need to make
1436  * this conditional.
1437  */
1438 static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
1439                                             dma_addr_t addr, int type)
1440 {
1441         /* Shift high bits down */
1442         addr |= (addr >> 28) & 0xf0;
1443
1444         /* Type checking must be done elsewhere */
1445         return addr | bridge->driver->masks[type].mask;
1446 }
1447
1448 static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
1449 {
1450         u16 snb_gmch_ctl;
1451
1452         switch (agp_bridge->dev->device) {
1453         case PCI_DEVICE_ID_INTEL_GM45_HB:
1454         case PCI_DEVICE_ID_INTEL_EAGLELAKE_HB:
1455         case PCI_DEVICE_ID_INTEL_Q45_HB:
1456         case PCI_DEVICE_ID_INTEL_G45_HB:
1457         case PCI_DEVICE_ID_INTEL_G41_HB:
1458         case PCI_DEVICE_ID_INTEL_B43_HB:
1459         case PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB:
1460         case PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB:
1461         case PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB:
1462         case PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB:
1463                 *gtt_offset = *gtt_size = MB(2);
1464                 break;
1465         case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB:
1466         case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB:
1467                 *gtt_offset = MB(2);
1468
1469                 pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl);
1470                 switch (snb_gmch_ctl & SNB_GTT_SIZE_MASK) {
1471                 default:
1472                 case SNB_GTT_SIZE_0M:
1473                         printk(KERN_ERR "Bad GTT size mask: 0x%04x.\n", snb_gmch_ctl);
1474                         *gtt_size = MB(0);
1475                         break;
1476                 case SNB_GTT_SIZE_1M:
1477                         *gtt_size = MB(1);
1478                         break;
1479                 case SNB_GTT_SIZE_2M:
1480                         *gtt_size = MB(2);
1481                         break;
1482                 }
1483                 break;
1484         default:
1485                 *gtt_offset = *gtt_size = KB(512);
1486         }
1487 }
1488
1489 /* The intel i965 automatically initializes the agp aperture during POST.
1490  * Use the memory already set aside for in the GTT.
1491  */
1492 static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
1493 {
1494         int page_order;
1495         struct aper_size_info_fixed *size;
1496         int num_entries;
1497         u32 temp;
1498         int gtt_offset, gtt_size;
1499
1500         size = agp_bridge->current_size;
1501         page_order = size->page_order;
1502         num_entries = size->num_entries;
1503         agp_bridge->gatt_table_real = NULL;
1504
1505         pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
1506
1507         temp &= 0xfff00000;
1508
1509         intel_i965_get_gtt_range(&gtt_offset, &gtt_size);
1510
1511         intel_private.gtt = ioremap((temp + gtt_offset) , gtt_size);
1512
1513         if (!intel_private.gtt)
1514                 return -ENOMEM;
1515
1516         intel_private.gtt_total_size = gtt_size / 4;
1517
1518         intel_private.registers = ioremap(temp, 128 * 4096);
1519         if (!intel_private.registers) {
1520                 iounmap(intel_private.gtt);
1521                 return -ENOMEM;
1522         }
1523
1524         temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
1525         global_cache_flush();   /* FIXME: ? */
1526
1527         /* we have to call this as early as possible after the MMIO base address is known */
1528         intel_i830_init_gtt_entries();
1529
1530         agp_bridge->gatt_table = NULL;
1531
1532         agp_bridge->gatt_bus_addr = temp;
1533
1534         return 0;
1535 }
1536
1537
1538 static int intel_fetch_size(void)
1539 {
1540         int i;
1541         u16 temp;
1542         struct aper_size_info_16 *values;
1543
1544         pci_read_config_word(agp_bridge->dev, INTEL_APSIZE, &temp);
1545         values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
1546
1547         for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
1548                 if (temp == values[i].size_value) {
1549                         agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + i);
1550                         agp_bridge->aperture_size_idx = i;
1551                         return values[i].size;
1552                 }
1553         }
1554
1555         return 0;
1556 }
1557
1558 static int __intel_8xx_fetch_size(u8 temp)
1559 {
1560         int i;
1561         struct aper_size_info_8 *values;
1562
1563         values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
1564
1565         for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
1566                 if (temp == values[i].size_value) {
1567                         agp_bridge->previous_size =
1568                                 agp_bridge->current_size = (void *) (values + i);
1569                         agp_bridge->aperture_size_idx = i;
1570                         return values[i].size;
1571                 }
1572         }
1573         return 0;
1574 }
1575
1576 static int intel_8xx_fetch_size(void)
1577 {
1578         u8 temp;
1579
1580         pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
1581         return __intel_8xx_fetch_size(temp);
1582 }
1583
1584 static int intel_815_fetch_size(void)
1585 {
1586         u8 temp;
1587
1588         /* Intel 815 chipsets have a _weird_ APSIZE register with only
1589          * one non-reserved bit, so mask the others out ... */
1590         pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
1591         temp &= (1 << 3);
1592
1593         return __intel_8xx_fetch_size(temp);
1594 }
1595
1596 static void intel_tlbflush(struct agp_memory *mem)
1597 {
1598         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2200);
1599         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1600 }
1601
1602
1603 static void intel_8xx_tlbflush(struct agp_memory *mem)
1604 {
1605         u32 temp;
1606         pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
1607         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp & ~(1 << 7));
1608         pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
1609         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp | (1 << 7));
1610 }
1611
1612
1613 static void intel_cleanup(void)
1614 {
1615         u16 temp;
1616         struct aper_size_info_16 *previous_size;
1617
1618         previous_size = A_SIZE_16(agp_bridge->previous_size);
1619         pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1620         pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1621         pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
1622 }
1623
1624
1625 static void intel_8xx_cleanup(void)
1626 {
1627         u16 temp;
1628         struct aper_size_info_8 *previous_size;
1629
1630         previous_size = A_SIZE_8(agp_bridge->previous_size);
1631         pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1632         pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1633         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
1634 }
1635
1636
1637 static int intel_configure(void)
1638 {
1639         u32 temp;
1640         u16 temp2;
1641         struct aper_size_info_16 *current_size;
1642
1643         current_size = A_SIZE_16(agp_bridge->current_size);
1644
1645         /* aperture size */
1646         pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1647
1648         /* address to map to */
1649         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1650         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1651
1652         /* attbase - aperture base */
1653         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1654
1655         /* agpctrl */
1656         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1657
1658         /* paccfg/nbxcfg */
1659         pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1660         pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG,
1661                         (temp2 & ~(1 << 10)) | (1 << 9));
1662         /* clear any possible error conditions */
1663         pci_write_config_byte(agp_bridge->dev, INTEL_ERRSTS + 1, 7);
1664         return 0;
1665 }
1666
1667 static int intel_815_configure(void)
1668 {
1669         u32 temp, addr;
1670         u8 temp2;
1671         struct aper_size_info_8 *current_size;
1672
1673         /* attbase - aperture base */
1674         /* the Intel 815 chipset spec. says that bits 29-31 in the
1675         * ATTBASE register are reserved -> try not to write them */
1676         if (agp_bridge->gatt_bus_addr & INTEL_815_ATTBASE_MASK) {
1677                 dev_emerg(&agp_bridge->dev->dev, "gatt bus addr too high");
1678                 return -EINVAL;
1679         }
1680
1681         current_size = A_SIZE_8(agp_bridge->current_size);
1682
1683         /* aperture size */
1684         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
1685                         current_size->size_value);
1686
1687         /* address to map to */
1688         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1689         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1690
1691         pci_read_config_dword(agp_bridge->dev, INTEL_ATTBASE, &addr);
1692         addr &= INTEL_815_ATTBASE_MASK;
1693         addr |= agp_bridge->gatt_bus_addr;
1694         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, addr);
1695
1696         /* agpctrl */
1697         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1698
1699         /* apcont */
1700         pci_read_config_byte(agp_bridge->dev, INTEL_815_APCONT, &temp2);
1701         pci_write_config_byte(agp_bridge->dev, INTEL_815_APCONT, temp2 | (1 << 1));
1702
1703         /* clear any possible error conditions */
1704         /* Oddness : this chipset seems to have no ERRSTS register ! */
1705         return 0;
1706 }
1707
1708 static void intel_820_tlbflush(struct agp_memory *mem)
1709 {
1710         return;
1711 }
1712
1713 static void intel_820_cleanup(void)
1714 {
1715         u8 temp;
1716         struct aper_size_info_8 *previous_size;
1717
1718         previous_size = A_SIZE_8(agp_bridge->previous_size);
1719         pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp);
1720         pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR,
1721                         temp & ~(1 << 1));
1722         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
1723                         previous_size->size_value);
1724 }
1725
1726
1727 static int intel_820_configure(void)
1728 {
1729         u32 temp;
1730         u8 temp2;
1731         struct aper_size_info_8 *current_size;
1732
1733         current_size = A_SIZE_8(agp_bridge->current_size);
1734
1735         /* aperture size */
1736         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1737
1738         /* address to map to */
1739         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1740         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1741
1742         /* attbase - aperture base */
1743         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1744
1745         /* agpctrl */
1746         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1747
1748         /* global enable aperture access */
1749         /* This flag is not accessed through MCHCFG register as in */
1750         /* i850 chipset. */
1751         pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp2);
1752         pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR, temp2 | (1 << 1));
1753         /* clear any possible AGP-related error conditions */
1754         pci_write_config_word(agp_bridge->dev, INTEL_I820_ERRSTS, 0x001c);
1755         return 0;
1756 }
1757
1758 static int intel_840_configure(void)
1759 {
1760         u32 temp;
1761         u16 temp2;
1762         struct aper_size_info_8 *current_size;
1763
1764         current_size = A_SIZE_8(agp_bridge->current_size);
1765
1766         /* aperture size */
1767         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1768
1769         /* address to map to */
1770         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1771         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1772
1773         /* attbase - aperture base */
1774         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1775
1776         /* agpctrl */
1777         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1778
1779         /* mcgcfg */
1780         pci_read_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, &temp2);
1781         pci_write_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, temp2 | (1 << 9));
1782         /* clear any possible error conditions */
1783         pci_write_config_word(agp_bridge->dev, INTEL_I840_ERRSTS, 0xc000);
1784         return 0;
1785 }
1786
1787 static int intel_845_configure(void)
1788 {
1789         u32 temp;
1790         u8 temp2;
1791         struct aper_size_info_8 *current_size;
1792
1793         current_size = A_SIZE_8(agp_bridge->current_size);
1794
1795         /* aperture size */
1796         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1797
1798         if (agp_bridge->apbase_config != 0) {
1799                 pci_write_config_dword(agp_bridge->dev, AGP_APBASE,
1800                                        agp_bridge->apbase_config);
1801         } else {
1802                 /* address to map to */
1803                 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1804                 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1805                 agp_bridge->apbase_config = temp;
1806         }
1807
1808         /* attbase - aperture base */
1809         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1810
1811         /* agpctrl */
1812         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1813
1814         /* agpm */
1815         pci_read_config_byte(agp_bridge->dev, INTEL_I845_AGPM, &temp2);
1816         pci_write_config_byte(agp_bridge->dev, INTEL_I845_AGPM, temp2 | (1 << 1));
1817         /* clear any possible error conditions */
1818         pci_write_config_word(agp_bridge->dev, INTEL_I845_ERRSTS, 0x001c);
1819
1820         intel_i830_setup_flush();
1821         return 0;
1822 }
1823
1824 static int intel_850_configure(void)
1825 {
1826         u32 temp;
1827         u16 temp2;
1828         struct aper_size_info_8 *current_size;
1829
1830         current_size = A_SIZE_8(agp_bridge->current_size);
1831
1832         /* aperture size */
1833         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1834
1835         /* address to map to */
1836         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1837         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1838
1839         /* attbase - aperture base */
1840         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1841
1842         /* agpctrl */
1843         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1844
1845         /* mcgcfg */
1846         pci_read_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, &temp2);
1847         pci_write_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, temp2 | (1 << 9));
1848         /* clear any possible AGP-related error conditions */
1849         pci_write_config_word(agp_bridge->dev, INTEL_I850_ERRSTS, 0x001c);
1850         return 0;
1851 }
1852
1853 static int intel_860_configure(void)
1854 {
1855         u32 temp;
1856         u16 temp2;
1857         struct aper_size_info_8 *current_size;
1858
1859         current_size = A_SIZE_8(agp_bridge->current_size);
1860
1861         /* aperture size */
1862         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1863
1864         /* address to map to */
1865         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1866         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1867
1868         /* attbase - aperture base */
1869         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1870
1871         /* agpctrl */
1872         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1873
1874         /* mcgcfg */
1875         pci_read_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, &temp2);
1876         pci_write_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, temp2 | (1 << 9));
1877         /* clear any possible AGP-related error conditions */
1878         pci_write_config_word(agp_bridge->dev, INTEL_I860_ERRSTS, 0xf700);
1879         return 0;
1880 }
1881
1882 static int intel_830mp_configure(void)
1883 {
1884         u32 temp;
1885         u16 temp2;
1886         struct aper_size_info_8 *current_size;
1887
1888         current_size = A_SIZE_8(agp_bridge->current_size);
1889
1890         /* aperture size */
1891         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1892
1893         /* address to map to */
1894         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1895         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1896
1897         /* attbase - aperture base */
1898         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1899
1900         /* agpctrl */
1901         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1902
1903         /* gmch */
1904         pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1905         pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp2 | (1 << 9));
1906         /* clear any possible AGP-related error conditions */
1907         pci_write_config_word(agp_bridge->dev, INTEL_I830_ERRSTS, 0x1c);
1908         return 0;
1909 }
1910
1911 static int intel_7505_configure(void)
1912 {
1913         u32 temp;
1914         u16 temp2;
1915         struct aper_size_info_8 *current_size;
1916
1917         current_size = A_SIZE_8(agp_bridge->current_size);
1918
1919         /* aperture size */
1920         pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1921
1922         /* address to map to */
1923         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1924         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1925
1926         /* attbase - aperture base */
1927         pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1928
1929         /* agpctrl */
1930         pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1931
1932         /* mchcfg */
1933         pci_read_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, &temp2);
1934         pci_write_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, temp2 | (1 << 9));
1935
1936         return 0;
1937 }
1938
1939 /* Setup function */
1940 static const struct gatt_mask intel_generic_masks[] =
1941 {
1942         {.mask = 0x00000017, .type = 0}
1943 };
1944
1945 static const struct aper_size_info_8 intel_815_sizes[2] =
1946 {
1947         {64, 16384, 4, 0},
1948         {32, 8192, 3, 8},
1949 };
1950
1951 static const struct aper_size_info_8 intel_8xx_sizes[7] =
1952 {
1953         {256, 65536, 6, 0},
1954         {128, 32768, 5, 32},
1955         {64, 16384, 4, 48},
1956         {32, 8192, 3, 56},
1957         {16, 4096, 2, 60},
1958         {8, 2048, 1, 62},
1959         {4, 1024, 0, 63}
1960 };
1961
1962 static const struct aper_size_info_16 intel_generic_sizes[7] =
1963 {
1964         {256, 65536, 6, 0},
1965         {128, 32768, 5, 32},
1966         {64, 16384, 4, 48},
1967         {32, 8192, 3, 56},
1968         {16, 4096, 2, 60},
1969         {8, 2048, 1, 62},
1970         {4, 1024, 0, 63}
1971 };
1972
1973 static const struct aper_size_info_8 intel_830mp_sizes[4] =
1974 {
1975         {256, 65536, 6, 0},
1976         {128, 32768, 5, 32},
1977         {64, 16384, 4, 48},
1978         {32, 8192, 3, 56}
1979 };
1980
1981 static const struct agp_bridge_driver intel_generic_driver = {
1982         .owner                  = THIS_MODULE,
1983         .aperture_sizes         = intel_generic_sizes,
1984         .size_type              = U16_APER_SIZE,
1985         .num_aperture_sizes     = 7,
1986         .configure              = intel_configure,
1987         .fetch_size             = intel_fetch_size,
1988         .cleanup                = intel_cleanup,
1989         .tlb_flush              = intel_tlbflush,
1990         .mask_memory            = agp_generic_mask_memory,
1991         .masks                  = intel_generic_masks,
1992         .agp_enable             = agp_generic_enable,
1993         .cache_flush            = global_cache_flush,
1994         .create_gatt_table      = agp_generic_create_gatt_table,
1995         .free_gatt_table        = agp_generic_free_gatt_table,
1996         .insert_memory          = agp_generic_insert_memory,
1997         .remove_memory          = agp_generic_remove_memory,
1998         .alloc_by_type          = agp_generic_alloc_by_type,
1999         .free_by_type           = agp_generic_free_by_type,
2000         .agp_alloc_page         = agp_generic_alloc_page,
2001         .agp_alloc_pages        = agp_generic_alloc_pages,
2002         .agp_destroy_page       = agp_generic_destroy_page,
2003         .agp_destroy_pages      = agp_generic_destroy_pages,
2004         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2005 };
2006
2007 static const struct agp_bridge_driver intel_810_driver = {
2008         .owner                  = THIS_MODULE,
2009         .aperture_sizes         = intel_i810_sizes,
2010         .size_type              = FIXED_APER_SIZE,
2011         .num_aperture_sizes     = 2,
2012         .needs_scratch_page     = true,
2013         .configure              = intel_i810_configure,
2014         .fetch_size             = intel_i810_fetch_size,
2015         .cleanup                = intel_i810_cleanup,
2016         .tlb_flush              = intel_i810_tlbflush,
2017         .mask_memory            = intel_i810_mask_memory,
2018         .masks                  = intel_i810_masks,
2019         .agp_enable             = intel_i810_agp_enable,
2020         .cache_flush            = global_cache_flush,
2021         .create_gatt_table      = agp_generic_create_gatt_table,
2022         .free_gatt_table        = agp_generic_free_gatt_table,
2023         .insert_memory          = intel_i810_insert_entries,
2024         .remove_memory          = intel_i810_remove_entries,
2025         .alloc_by_type          = intel_i810_alloc_by_type,
2026         .free_by_type           = intel_i810_free_by_type,
2027         .agp_alloc_page         = agp_generic_alloc_page,
2028         .agp_alloc_pages        = agp_generic_alloc_pages,
2029         .agp_destroy_page       = agp_generic_destroy_page,
2030         .agp_destroy_pages      = agp_generic_destroy_pages,
2031         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2032 };
2033
2034 static const struct agp_bridge_driver intel_815_driver = {
2035         .owner                  = THIS_MODULE,
2036         .aperture_sizes         = intel_815_sizes,
2037         .size_type              = U8_APER_SIZE,
2038         .num_aperture_sizes     = 2,
2039         .configure              = intel_815_configure,
2040         .fetch_size             = intel_815_fetch_size,
2041         .cleanup                = intel_8xx_cleanup,
2042         .tlb_flush              = intel_8xx_tlbflush,
2043         .mask_memory            = agp_generic_mask_memory,
2044         .masks                  = intel_generic_masks,
2045         .agp_enable             = agp_generic_enable,
2046         .cache_flush            = global_cache_flush,
2047         .create_gatt_table      = agp_generic_create_gatt_table,
2048         .free_gatt_table        = agp_generic_free_gatt_table,
2049         .insert_memory          = agp_generic_insert_memory,
2050         .remove_memory          = agp_generic_remove_memory,
2051         .alloc_by_type          = agp_generic_alloc_by_type,
2052         .free_by_type           = agp_generic_free_by_type,
2053         .agp_alloc_page         = agp_generic_alloc_page,
2054         .agp_alloc_pages        = agp_generic_alloc_pages,
2055         .agp_destroy_page       = agp_generic_destroy_page,
2056         .agp_destroy_pages      = agp_generic_destroy_pages,
2057         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2058 };
2059
2060 static const struct agp_bridge_driver intel_830_driver = {
2061         .owner                  = THIS_MODULE,
2062         .aperture_sizes         = intel_i830_sizes,
2063         .size_type              = FIXED_APER_SIZE,
2064         .num_aperture_sizes     = 4,
2065         .needs_scratch_page     = true,
2066         .configure              = intel_i830_configure,
2067         .fetch_size             = intel_i830_fetch_size,
2068         .cleanup                = intel_i830_cleanup,
2069         .tlb_flush              = intel_i810_tlbflush,
2070         .mask_memory            = intel_i810_mask_memory,
2071         .masks                  = intel_i810_masks,
2072         .agp_enable             = intel_i810_agp_enable,
2073         .cache_flush            = global_cache_flush,
2074         .create_gatt_table      = intel_i830_create_gatt_table,
2075         .free_gatt_table        = intel_i830_free_gatt_table,
2076         .insert_memory          = intel_i830_insert_entries,
2077         .remove_memory          = intel_i830_remove_entries,
2078         .alloc_by_type          = intel_i830_alloc_by_type,
2079         .free_by_type           = intel_i810_free_by_type,
2080         .agp_alloc_page         = agp_generic_alloc_page,
2081         .agp_alloc_pages        = agp_generic_alloc_pages,
2082         .agp_destroy_page       = agp_generic_destroy_page,
2083         .agp_destroy_pages      = agp_generic_destroy_pages,
2084         .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
2085         .chipset_flush          = intel_i830_chipset_flush,
2086 };
2087
2088 static const struct agp_bridge_driver intel_820_driver = {
2089         .owner                  = THIS_MODULE,
2090         .aperture_sizes         = intel_8xx_sizes,
2091         .size_type              = U8_APER_SIZE,
2092         .num_aperture_sizes     = 7,
2093         .configure              = intel_820_configure,
2094         .fetch_size             = intel_8xx_fetch_size,
2095         .cleanup                = intel_820_cleanup,
2096         .tlb_flush              = intel_820_tlbflush,
2097         .mask_memory            = agp_generic_mask_memory,
2098         .masks                  = intel_generic_masks,
2099         .agp_enable             = agp_generic_enable,
2100         .cache_flush            = global_cache_flush,
2101         .create_gatt_table      = agp_generic_create_gatt_table,
2102         .free_gatt_table        = agp_generic_free_gatt_table,
2103         .insert_memory          = agp_generic_insert_memory,
2104         .remove_memory          = agp_generic_remove_memory,
2105         .alloc_by_type          = agp_generic_alloc_by_type,
2106         .free_by_type           = agp_generic_free_by_type,
2107         .agp_alloc_page         = agp_generic_alloc_page,
2108         .agp_alloc_pages        = agp_generic_alloc_pages,
2109         .agp_destroy_page       = agp_generic_destroy_page,
2110         .agp_destroy_pages      = agp_generic_destroy_pages,
2111         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2112 };
2113
2114 static const struct agp_bridge_driver intel_830mp_driver = {
2115         .owner                  = THIS_MODULE,
2116         .aperture_sizes         = intel_830mp_sizes,
2117         .size_type              = U8_APER_SIZE,
2118         .num_aperture_sizes     = 4,
2119         .configure              = intel_830mp_configure,
2120         .fetch_size             = intel_8xx_fetch_size,
2121         .cleanup                = intel_8xx_cleanup,
2122         .tlb_flush              = intel_8xx_tlbflush,
2123         .mask_memory            = agp_generic_mask_memory,
2124         .masks                  = intel_generic_masks,
2125         .agp_enable             = agp_generic_enable,
2126         .cache_flush            = global_cache_flush,
2127         .create_gatt_table      = agp_generic_create_gatt_table,
2128         .free_gatt_table        = agp_generic_free_gatt_table,
2129         .insert_memory          = agp_generic_insert_memory,
2130         .remove_memory          = agp_generic_remove_memory,
2131         .alloc_by_type          = agp_generic_alloc_by_type,
2132         .free_by_type           = agp_generic_free_by_type,
2133         .agp_alloc_page         = agp_generic_alloc_page,
2134         .agp_alloc_pages        = agp_generic_alloc_pages,
2135         .agp_destroy_page       = agp_generic_destroy_page,
2136         .agp_destroy_pages      = agp_generic_destroy_pages,
2137         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2138 };
2139
2140 static const struct agp_bridge_driver intel_840_driver = {
2141         .owner                  = THIS_MODULE,
2142         .aperture_sizes         = intel_8xx_sizes,
2143         .size_type              = U8_APER_SIZE,
2144         .num_aperture_sizes     = 7,
2145         .configure              = intel_840_configure,
2146         .fetch_size             = intel_8xx_fetch_size,
2147         .cleanup                = intel_8xx_cleanup,
2148         .tlb_flush              = intel_8xx_tlbflush,
2149         .mask_memory            = agp_generic_mask_memory,
2150         .masks                  = intel_generic_masks,
2151         .agp_enable             = agp_generic_enable,
2152         .cache_flush            = global_cache_flush,
2153         .create_gatt_table      = agp_generic_create_gatt_table,
2154         .free_gatt_table        = agp_generic_free_gatt_table,
2155         .insert_memory          = agp_generic_insert_memory,
2156         .remove_memory          = agp_generic_remove_memory,
2157         .alloc_by_type          = agp_generic_alloc_by_type,
2158         .free_by_type           = agp_generic_free_by_type,
2159         .agp_alloc_page         = agp_generic_alloc_page,
2160         .agp_alloc_pages        = agp_generic_alloc_pages,
2161         .agp_destroy_page       = agp_generic_destroy_page,
2162         .agp_destroy_pages      = agp_generic_destroy_pages,
2163         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2164 };
2165
2166 static const struct agp_bridge_driver intel_845_driver = {
2167         .owner                  = THIS_MODULE,
2168         .aperture_sizes         = intel_8xx_sizes,
2169         .size_type              = U8_APER_SIZE,
2170         .num_aperture_sizes     = 7,
2171         .configure              = intel_845_configure,
2172         .fetch_size             = intel_8xx_fetch_size,
2173         .cleanup                = intel_8xx_cleanup,
2174         .tlb_flush              = intel_8xx_tlbflush,
2175         .mask_memory            = agp_generic_mask_memory,
2176         .masks                  = intel_generic_masks,
2177         .agp_enable             = agp_generic_enable,
2178         .cache_flush            = global_cache_flush,
2179         .create_gatt_table      = agp_generic_create_gatt_table,
2180         .free_gatt_table        = agp_generic_free_gatt_table,
2181         .insert_memory          = agp_generic_insert_memory,
2182         .remove_memory          = agp_generic_remove_memory,
2183         .alloc_by_type          = agp_generic_alloc_by_type,
2184         .free_by_type           = agp_generic_free_by_type,
2185         .agp_alloc_page         = agp_generic_alloc_page,
2186         .agp_alloc_pages        = agp_generic_alloc_pages,
2187         .agp_destroy_page       = agp_generic_destroy_page,
2188         .agp_destroy_pages      = agp_generic_destroy_pages,
2189         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2190         .chipset_flush          = intel_i830_chipset_flush,
2191 };
2192
2193 static const struct agp_bridge_driver intel_850_driver = {
2194         .owner                  = THIS_MODULE,
2195         .aperture_sizes         = intel_8xx_sizes,
2196         .size_type              = U8_APER_SIZE,
2197         .num_aperture_sizes     = 7,
2198         .configure              = intel_850_configure,
2199         .fetch_size             = intel_8xx_fetch_size,
2200         .cleanup                = intel_8xx_cleanup,
2201         .tlb_flush              = intel_8xx_tlbflush,
2202         .mask_memory            = agp_generic_mask_memory,
2203         .masks                  = intel_generic_masks,
2204         .agp_enable             = agp_generic_enable,
2205         .cache_flush            = global_cache_flush,
2206         .create_gatt_table      = agp_generic_create_gatt_table,
2207         .free_gatt_table        = agp_generic_free_gatt_table,
2208         .insert_memory          = agp_generic_insert_memory,
2209         .remove_memory          = agp_generic_remove_memory,
2210         .alloc_by_type          = agp_generic_alloc_by_type,
2211         .free_by_type           = agp_generic_free_by_type,
2212         .agp_alloc_page         = agp_generic_alloc_page,
2213         .agp_alloc_pages        = agp_generic_alloc_pages,
2214         .agp_destroy_page       = agp_generic_destroy_page,
2215         .agp_destroy_pages      = agp_generic_destroy_pages,
2216         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2217 };
2218
2219 static const struct agp_bridge_driver intel_860_driver = {
2220         .owner                  = THIS_MODULE,
2221         .aperture_sizes         = intel_8xx_sizes,
2222         .size_type              = U8_APER_SIZE,
2223         .num_aperture_sizes     = 7,
2224         .configure              = intel_860_configure,
2225         .fetch_size             = intel_8xx_fetch_size,
2226         .cleanup                = intel_8xx_cleanup,
2227         .tlb_flush              = intel_8xx_tlbflush,
2228         .mask_memory            = agp_generic_mask_memory,
2229         .masks                  = intel_generic_masks,
2230         .agp_enable             = agp_generic_enable,
2231         .cache_flush            = global_cache_flush,
2232         .create_gatt_table      = agp_generic_create_gatt_table,
2233         .free_gatt_table        = agp_generic_free_gatt_table,
2234         .insert_memory          = agp_generic_insert_memory,
2235         .remove_memory          = agp_generic_remove_memory,
2236         .alloc_by_type          = agp_generic_alloc_by_type,
2237         .free_by_type           = agp_generic_free_by_type,
2238         .agp_alloc_page         = agp_generic_alloc_page,
2239         .agp_alloc_pages        = agp_generic_alloc_pages,
2240         .agp_destroy_page       = agp_generic_destroy_page,
2241         .agp_destroy_pages      = agp_generic_destroy_pages,
2242         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2243 };
2244
2245 static const struct agp_bridge_driver intel_915_driver = {
2246         .owner                  = THIS_MODULE,
2247         .aperture_sizes         = intel_i830_sizes,
2248         .size_type              = FIXED_APER_SIZE,
2249         .num_aperture_sizes     = 4,
2250         .needs_scratch_page     = true,
2251         .configure              = intel_i915_configure,
2252         .fetch_size             = intel_i9xx_fetch_size,
2253         .cleanup                = intel_i915_cleanup,
2254         .tlb_flush              = intel_i810_tlbflush,
2255         .mask_memory            = intel_i810_mask_memory,
2256         .masks                  = intel_i810_masks,
2257         .agp_enable             = intel_i810_agp_enable,
2258         .cache_flush            = global_cache_flush,
2259         .create_gatt_table      = intel_i915_create_gatt_table,
2260         .free_gatt_table        = intel_i830_free_gatt_table,
2261         .insert_memory          = intel_i915_insert_entries,
2262         .remove_memory          = intel_i915_remove_entries,
2263         .alloc_by_type          = intel_i830_alloc_by_type,
2264         .free_by_type           = intel_i810_free_by_type,
2265         .agp_alloc_page         = agp_generic_alloc_page,
2266         .agp_alloc_pages        = agp_generic_alloc_pages,
2267         .agp_destroy_page       = agp_generic_destroy_page,
2268         .agp_destroy_pages      = agp_generic_destroy_pages,
2269         .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
2270         .chipset_flush          = intel_i915_chipset_flush,
2271 #ifdef USE_PCI_DMA_API
2272         .agp_map_page           = intel_agp_map_page,
2273         .agp_unmap_page         = intel_agp_unmap_page,
2274         .agp_map_memory         = intel_agp_map_memory,
2275         .agp_unmap_memory       = intel_agp_unmap_memory,
2276 #endif
2277 };
2278
2279 static const struct agp_bridge_driver intel_i965_driver = {
2280         .owner                  = THIS_MODULE,
2281         .aperture_sizes         = intel_i830_sizes,
2282         .size_type              = FIXED_APER_SIZE,
2283         .num_aperture_sizes     = 4,
2284         .needs_scratch_page     = true,
2285         .configure              = intel_i915_configure,
2286         .fetch_size             = intel_i9xx_fetch_size,
2287         .cleanup                = intel_i915_cleanup,
2288         .tlb_flush              = intel_i810_tlbflush,
2289         .mask_memory            = intel_i965_mask_memory,
2290         .masks                  = intel_i810_masks,
2291         .agp_enable             = intel_i810_agp_enable,
2292         .cache_flush            = global_cache_flush,
2293         .create_gatt_table      = intel_i965_create_gatt_table,
2294         .free_gatt_table        = intel_i830_free_gatt_table,
2295         .insert_memory          = intel_i915_insert_entries,
2296         .remove_memory          = intel_i915_remove_entries,
2297         .alloc_by_type          = intel_i830_alloc_by_type,
2298         .free_by_type           = intel_i810_free_by_type,
2299         .agp_alloc_page         = agp_generic_alloc_page,
2300         .agp_alloc_pages        = agp_generic_alloc_pages,
2301         .agp_destroy_page       = agp_generic_destroy_page,
2302         .agp_destroy_pages      = agp_generic_destroy_pages,
2303         .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
2304         .chipset_flush          = intel_i915_chipset_flush,
2305 #ifdef USE_PCI_DMA_API
2306         .agp_map_page           = intel_agp_map_page,
2307         .agp_unmap_page         = intel_agp_unmap_page,
2308         .agp_map_memory         = intel_agp_map_memory,
2309         .agp_unmap_memory       = intel_agp_unmap_memory,
2310 #endif
2311 };
2312
2313 static const struct agp_bridge_driver intel_7505_driver = {
2314         .owner                  = THIS_MODULE,
2315         .aperture_sizes         = intel_8xx_sizes,
2316         .size_type              = U8_APER_SIZE,
2317         .num_aperture_sizes     = 7,
2318         .configure              = intel_7505_configure,
2319         .fetch_size             = intel_8xx_fetch_size,
2320         .cleanup                = intel_8xx_cleanup,
2321         .tlb_flush              = intel_8xx_tlbflush,
2322         .mask_memory            = agp_generic_mask_memory,
2323         .masks                  = intel_generic_masks,
2324         .agp_enable             = agp_generic_enable,
2325         .cache_flush            = global_cache_flush,
2326         .create_gatt_table      = agp_generic_create_gatt_table,
2327         .free_gatt_table        = agp_generic_free_gatt_table,
2328         .insert_memory          = agp_generic_insert_memory,
2329         .remove_memory          = agp_generic_remove_memory,
2330         .alloc_by_type          = agp_generic_alloc_by_type,
2331         .free_by_type           = agp_generic_free_by_type,
2332         .agp_alloc_page         = agp_generic_alloc_page,
2333         .agp_alloc_pages        = agp_generic_alloc_pages,
2334         .agp_destroy_page       = agp_generic_destroy_page,
2335         .agp_destroy_pages      = agp_generic_destroy_pages,
2336         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
2337 };
2338
2339 static const struct agp_bridge_driver intel_g33_driver = {
2340         .owner                  = THIS_MODULE,
2341         .aperture_sizes         = intel_i830_sizes,
2342         .size_type              = FIXED_APER_SIZE,
2343         .num_aperture_sizes     = 4,
2344         .needs_scratch_page     = true,
2345         .configure              = intel_i915_configure,
2346         .fetch_size             = intel_i9xx_fetch_size,
2347         .cleanup                = intel_i915_cleanup,
2348         .tlb_flush              = intel_i810_tlbflush,
2349         .mask_memory            = intel_i965_mask_memory,
2350         .masks                  = intel_i810_masks,
2351         .agp_enable             = intel_i810_agp_enable,
2352         .cache_flush            = global_cache_flush,
2353         .create_gatt_table      = intel_i915_create_gatt_table,
2354         .free_gatt_table        = intel_i830_free_gatt_table,
2355         .insert_memory          = intel_i915_insert_entries,
2356         .remove_memory          = intel_i915_remove_entries,
2357         .alloc_by_type          = intel_i830_alloc_by_type,
2358         .free_by_type           = intel_i810_free_by_type,
2359         .agp_alloc_page         = agp_generic_alloc_page,
2360         .agp_alloc_pages        = agp_generic_alloc_pages,
2361         .agp_destroy_page       = agp_generic_destroy_page,
2362         .agp_destroy_pages      = agp_generic_destroy_pages,
2363         .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
2364         .chipset_flush          = intel_i915_chipset_flush,
2365 #ifdef USE_PCI_DMA_API
2366         .agp_map_page           = intel_agp_map_page,
2367         .agp_unmap_page         = intel_agp_unmap_page,
2368         .agp_map_memory         = intel_agp_map_memory,
2369         .agp_unmap_memory       = intel_agp_unmap_memory,
2370 #endif
2371 };
2372
2373 static int find_gmch(u16 device)
2374 {
2375         struct pci_dev *gmch_device;
2376
2377         gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
2378         if (gmch_device && PCI_FUNC(gmch_device->devfn) != 0) {
2379                 gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL,
2380                                              device, gmch_device);
2381         }
2382
2383         if (!gmch_device)
2384                 return 0;
2385
2386         intel_private.pcidev = gmch_device;
2387         return 1;
2388 }
2389
2390 /* Table to describe Intel GMCH and AGP/PCIE GART drivers.  At least one of
2391  * driver and gmch_driver must be non-null, and find_gmch will determine
2392  * which one should be used if a gmch_chip_id is present.
2393  */
2394 static const struct intel_driver_description {
2395         unsigned int chip_id;
2396         unsigned int gmch_chip_id;
2397         unsigned int multi_gmch_chip; /* if we have more gfx chip type on this HB. */
2398         char *name;
2399         const struct agp_bridge_driver *driver;
2400         const struct agp_bridge_driver *gmch_driver;
2401 } intel_agp_chipsets[] = {
2402         { PCI_DEVICE_ID_INTEL_82443LX_0, 0, 0, "440LX", &intel_generic_driver, NULL },
2403         { PCI_DEVICE_ID_INTEL_82443BX_0, 0, 0, "440BX", &intel_generic_driver, NULL },
2404         { PCI_DEVICE_ID_INTEL_82443GX_0, 0, 0, "440GX", &intel_generic_driver, NULL },
2405         { PCI_DEVICE_ID_INTEL_82810_MC1, PCI_DEVICE_ID_INTEL_82810_IG1, 0, "i810",
2406                 NULL, &intel_810_driver },
2407         { PCI_DEVICE_ID_INTEL_82810_MC3, PCI_DEVICE_ID_INTEL_82810_IG3, 0, "i810",
2408                 NULL, &intel_810_driver },
2409         { PCI_DEVICE_ID_INTEL_82810E_MC, PCI_DEVICE_ID_INTEL_82810E_IG, 0, "i810",
2410                 NULL, &intel_810_driver },
2411         { PCI_DEVICE_ID_INTEL_82815_MC, PCI_DEVICE_ID_INTEL_82815_CGC, 0, "i815",
2412                 &intel_815_driver, &intel_810_driver },
2413         { PCI_DEVICE_ID_INTEL_82820_HB, 0, 0, "i820", &intel_820_driver, NULL },
2414         { PCI_DEVICE_ID_INTEL_82820_UP_HB, 0, 0, "i820", &intel_820_driver, NULL },
2415         { PCI_DEVICE_ID_INTEL_82830_HB, PCI_DEVICE_ID_INTEL_82830_CGC, 0, "830M",
2416                 &intel_830mp_driver, &intel_830_driver },
2417         { PCI_DEVICE_ID_INTEL_82840_HB, 0, 0, "i840", &intel_840_driver, NULL },
2418         { PCI_DEVICE_ID_INTEL_82845_HB, 0, 0, "845G", &intel_845_driver, NULL },
2419         { PCI_DEVICE_ID_INTEL_82845G_HB, PCI_DEVICE_ID_INTEL_82845G_IG, 0, "830M",
2420                 &intel_845_driver, &intel_830_driver },
2421         { PCI_DEVICE_ID_INTEL_82850_HB, 0, 0, "i850", &intel_850_driver, NULL },
2422         { PCI_DEVICE_ID_INTEL_82854_HB, PCI_DEVICE_ID_INTEL_82854_IG, 0, "854",
2423                 &intel_845_driver, &intel_830_driver },
2424         { PCI_DEVICE_ID_INTEL_82855PM_HB, 0, 0, "855PM", &intel_845_driver, NULL },
2425         { PCI_DEVICE_ID_INTEL_82855GM_HB, PCI_DEVICE_ID_INTEL_82855GM_IG, 0, "855GM",
2426                 &intel_845_driver, &intel_830_driver },
2427         { PCI_DEVICE_ID_INTEL_82860_HB, 0, 0, "i860", &intel_860_driver, NULL },
2428         { PCI_DEVICE_ID_INTEL_82865_HB, PCI_DEVICE_ID_INTEL_82865_IG, 0, "865",
2429                 &intel_845_driver, &intel_830_driver },
2430         { PCI_DEVICE_ID_INTEL_82875_HB, 0, 0, "i875", &intel_845_driver, NULL },
2431         { PCI_DEVICE_ID_INTEL_E7221_HB, PCI_DEVICE_ID_INTEL_E7221_IG, 0, "E7221 (i915)",
2432                 NULL, &intel_915_driver },
2433         { PCI_DEVICE_ID_INTEL_82915G_HB, PCI_DEVICE_ID_INTEL_82915G_IG, 0, "915G",
2434                 NULL, &intel_915_driver },
2435         { PCI_DEVICE_ID_INTEL_82915GM_HB, PCI_DEVICE_ID_INTEL_82915GM_IG, 0, "915GM",
2436                 NULL, &intel_915_driver },
2437         { PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, 0, "945G",
2438                 NULL, &intel_915_driver },
2439         { PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GM_IG, 0, "945GM",
2440                 NULL, &intel_915_driver },
2441         { PCI_DEVICE_ID_INTEL_82945GME_HB, PCI_DEVICE_ID_INTEL_82945GME_IG, 0, "945GME",
2442                 NULL, &intel_915_driver },
2443         { PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ",
2444                 NULL, &intel_i965_driver },
2445         { PCI_DEVICE_ID_INTEL_82G35_HB, PCI_DEVICE_ID_INTEL_82G35_IG, 0, "G35",
2446                 NULL, &intel_i965_driver },
2447         { PCI_DEVICE_ID_INTEL_82965Q_HB, PCI_DEVICE_ID_INTEL_82965Q_IG, 0, "965Q",
2448                 NULL, &intel_i965_driver },
2449         { PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, 0, "965G",
2450                 NULL, &intel_i965_driver },
2451         { PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GM_IG, 0, "965GM",
2452                 NULL, &intel_i965_driver },
2453         { PCI_DEVICE_ID_INTEL_82965GME_HB, PCI_DEVICE_ID_INTEL_82965GME_IG, 0, "965GME/GLE",
2454                 NULL, &intel_i965_driver },
2455         { PCI_DEVICE_ID_INTEL_7505_0, 0, 0, "E7505", &intel_7505_driver, NULL },
2456         { PCI_DEVICE_ID_INTEL_7205_0, 0, 0, "E7205", &intel_7505_driver, NULL },
2457         { PCI_DEVICE_ID_INTEL_G33_HB, PCI_DEVICE_ID_INTEL_G33_IG, 0, "G33",
2458                 NULL, &intel_g33_driver },
2459         { PCI_DEVICE_ID_INTEL_Q35_HB, PCI_DEVICE_ID_INTEL_Q35_IG, 0, "Q35",
2460                 NULL, &intel_g33_driver },
2461         { PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, 0, "Q33",
2462                 NULL, &intel_g33_driver },
2463         { PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB, PCI_DEVICE_ID_INTEL_PINEVIEW_M_IG, 0, "GMA3150",
2464                 NULL, &intel_g33_driver },
2465         { PCI_DEVICE_ID_INTEL_PINEVIEW_HB, PCI_DEVICE_ID_INTEL_PINEVIEW_IG, 0, "GMA3150",
2466                 NULL, &intel_g33_driver },
2467         { PCI_DEVICE_ID_INTEL_GM45_HB, PCI_DEVICE_ID_INTEL_GM45_IG, 0,
2468             "GM45", NULL, &intel_i965_driver },
2469         { PCI_DEVICE_ID_INTEL_EAGLELAKE_HB, PCI_DEVICE_ID_INTEL_EAGLELAKE_IG, 0,
2470             "Eaglelake", NULL, &intel_i965_driver },
2471         { PCI_DEVICE_ID_INTEL_Q45_HB, PCI_DEVICE_ID_INTEL_Q45_IG, 0,
2472             "Q45/Q43", NULL, &intel_i965_driver },
2473         { PCI_DEVICE_ID_INTEL_G45_HB, PCI_DEVICE_ID_INTEL_G45_IG, 0,
2474             "G45/G43", NULL, &intel_i965_driver },
2475         { PCI_DEVICE_ID_INTEL_B43_HB, PCI_DEVICE_ID_INTEL_B43_IG, 0,
2476             "B43", NULL, &intel_i965_driver },
2477         { PCI_DEVICE_ID_INTEL_G41_HB, PCI_DEVICE_ID_INTEL_G41_IG, 0,
2478             "G41", NULL, &intel_i965_driver },
2479         { PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG, 0,
2480             "HD Graphics", NULL, &intel_i965_driver },
2481         { PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG, 0,
2482             "HD Graphics", NULL, &intel_i965_driver },
2483         { PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG, 0,
2484             "HD Graphics", NULL, &intel_i965_driver },
2485         { PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG, 0,
2486             "HD Graphics", NULL, &intel_i965_driver },
2487         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_IG, 0,
2488             "Sandybridge", NULL, &intel_i965_driver },
2489         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_IG, 0,
2490             "Sandybridge", NULL, &intel_i965_driver },
2491         { 0, 0, 0, NULL, NULL, NULL }
2492 };
2493
2494 static int __devinit agp_intel_probe(struct pci_dev *pdev,
2495                                      const struct pci_device_id *ent)
2496 {
2497         struct agp_bridge_data *bridge;
2498         u8 cap_ptr = 0;
2499         struct resource *r;
2500         int i, err;
2501
2502         cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
2503
2504         bridge = agp_alloc_bridge();
2505         if (!bridge)
2506                 return -ENOMEM;
2507
2508         for (i = 0; intel_agp_chipsets[i].name != NULL; i++) {
2509                 /* In case that multiple models of gfx chip may
2510                    stand on same host bridge type, this can be
2511                    sure we detect the right IGD. */
2512                 if (pdev->device == intel_agp_chipsets[i].chip_id) {
2513                         if ((intel_agp_chipsets[i].gmch_chip_id != 0) &&
2514                                 find_gmch(intel_agp_chipsets[i].gmch_chip_id)) {
2515                                 bridge->driver =
2516                                         intel_agp_chipsets[i].gmch_driver;
2517                                 break;
2518                         } else if (intel_agp_chipsets[i].multi_gmch_chip) {
2519                                 continue;
2520                         } else {
2521                                 bridge->driver = intel_agp_chipsets[i].driver;
2522                                 break;
2523                         }
2524                 }
2525         }
2526
2527         if (intel_agp_chipsets[i].name == NULL) {
2528                 if (cap_ptr)
2529                         dev_warn(&pdev->dev, "unsupported Intel chipset [%04x/%04x]\n",
2530                                  pdev->vendor, pdev->device);
2531                 agp_put_bridge(bridge);
2532                 return -ENODEV;
2533         }
2534
2535         if (bridge->driver == NULL) {
2536                 /* bridge has no AGP and no IGD detected */
2537                 if (cap_ptr)
2538                         dev_warn(&pdev->dev, "can't find bridge device (chip_id: %04x)\n",
2539                                  intel_agp_chipsets[i].gmch_chip_id);
2540                 agp_put_bridge(bridge);
2541                 return -ENODEV;
2542         }
2543
2544         bridge->dev = pdev;
2545         bridge->capndx = cap_ptr;
2546         bridge->dev_private_data = &intel_private;
2547
2548         dev_info(&pdev->dev, "Intel %s Chipset\n", intel_agp_chipsets[i].name);
2549
2550         /*
2551         * The following fixes the case where the BIOS has "forgotten" to
2552         * provide an address range for the GART.
2553         * 20030610 - hamish@zot.org
2554         */
2555         r = &pdev->resource[0];
2556         if (!r->start && r->end) {
2557                 if (pci_assign_resource(pdev, 0)) {
2558                         dev_err(&pdev->dev, "can't assign resource 0\n");
2559                         agp_put_bridge(bridge);
2560                         return -ENODEV;
2561                 }
2562         }
2563
2564         /*
2565         * If the device has not been properly setup, the following will catch
2566         * the problem and should stop the system from crashing.
2567         * 20030610 - hamish@zot.org
2568         */
2569         if (pci_enable_device(pdev)) {
2570                 dev_err(&pdev->dev, "can't enable PCI device\n");
2571                 agp_put_bridge(bridge);
2572                 return -ENODEV;
2573         }
2574
2575         /* Fill in the mode register */
2576         if (cap_ptr) {
2577                 pci_read_config_dword(pdev,
2578                                 bridge->capndx+PCI_AGP_STATUS,
2579                                 &bridge->mode);
2580         }
2581
2582         if (bridge->driver->mask_memory == intel_i965_mask_memory) {
2583                 if (pci_set_dma_mask(intel_private.pcidev, DMA_BIT_MASK(36)))
2584                         dev_err(&intel_private.pcidev->dev,
2585                                 "set gfx device dma mask 36bit failed!\n");
2586                 else
2587                         pci_set_consistent_dma_mask(intel_private.pcidev,
2588                                                     DMA_BIT_MASK(36));
2589         }
2590
2591         pci_set_drvdata(pdev, bridge);
2592         err = agp_add_bridge(bridge);
2593         if (!err)
2594                 intel_agp_enabled = 1;
2595         return err;
2596 }
2597
2598 static void __devexit agp_intel_remove(struct pci_dev *pdev)
2599 {
2600         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
2601
2602         agp_remove_bridge(bridge);
2603
2604         if (intel_private.pcidev)
2605                 pci_dev_put(intel_private.pcidev);
2606
2607         agp_put_bridge(bridge);
2608 }
2609
2610 #ifdef CONFIG_PM
2611 static int agp_intel_resume(struct pci_dev *pdev)
2612 {
2613         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
2614         int ret_val;
2615
2616         if (bridge->driver == &intel_generic_driver)
2617                 intel_configure();
2618         else if (bridge->driver == &intel_850_driver)
2619                 intel_850_configure();
2620         else if (bridge->driver == &intel_845_driver)
2621                 intel_845_configure();
2622         else if (bridge->driver == &intel_830mp_driver)
2623                 intel_830mp_configure();
2624         else if (bridge->driver == &intel_915_driver)
2625                 intel_i915_configure();
2626         else if (bridge->driver == &intel_830_driver)
2627                 intel_i830_configure();
2628         else if (bridge->driver == &intel_810_driver)
2629                 intel_i810_configure();
2630         else if (bridge->driver == &intel_i965_driver)
2631                 intel_i915_configure();
2632
2633         ret_val = agp_rebind_memory();
2634         if (ret_val != 0)
2635                 return ret_val;
2636
2637         return 0;
2638 }
2639 #endif
2640
2641 static struct pci_device_id agp_intel_pci_table[] = {
2642 #define ID(x)                                           \
2643         {                                               \
2644         .class          = (PCI_CLASS_BRIDGE_HOST << 8), \
2645         .class_mask     = ~0,                           \
2646         .vendor         = PCI_VENDOR_ID_INTEL,          \
2647         .device         = x,                            \
2648         .subvendor      = PCI_ANY_ID,                   \
2649         .subdevice      = PCI_ANY_ID,                   \
2650         }
2651         ID(PCI_DEVICE_ID_INTEL_82443LX_0),
2652         ID(PCI_DEVICE_ID_INTEL_82443BX_0),
2653         ID(PCI_DEVICE_ID_INTEL_82443GX_0),
2654         ID(PCI_DEVICE_ID_INTEL_82810_MC1),
2655         ID(PCI_DEVICE_ID_INTEL_82810_MC3),
2656         ID(PCI_DEVICE_ID_INTEL_82810E_MC),
2657         ID(PCI_DEVICE_ID_INTEL_82815_MC),
2658         ID(PCI_DEVICE_ID_INTEL_82820_HB),
2659         ID(PCI_DEVICE_ID_INTEL_82820_UP_HB),
2660         ID(PCI_DEVICE_ID_INTEL_82830_HB),
2661         ID(PCI_DEVICE_ID_INTEL_82840_HB),
2662         ID(PCI_DEVICE_ID_INTEL_82845_HB),
2663         ID(PCI_DEVICE_ID_INTEL_82845G_HB),
2664         ID(PCI_DEVICE_ID_INTEL_82850_HB),
2665         ID(PCI_DEVICE_ID_INTEL_82854_HB),
2666         ID(PCI_DEVICE_ID_INTEL_82855PM_HB),
2667         ID(PCI_DEVICE_ID_INTEL_82855GM_HB),
2668         ID(PCI_DEVICE_ID_INTEL_82860_HB),
2669         ID(PCI_DEVICE_ID_INTEL_82865_HB),
2670         ID(PCI_DEVICE_ID_INTEL_82875_HB),
2671         ID(PCI_DEVICE_ID_INTEL_7505_0),
2672         ID(PCI_DEVICE_ID_INTEL_7205_0),
2673         ID(PCI_DEVICE_ID_INTEL_E7221_HB),
2674         ID(PCI_DEVICE_ID_INTEL_82915G_HB),
2675         ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
2676         ID(PCI_DEVICE_ID_INTEL_82945G_HB),
2677         ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
2678         ID(PCI_DEVICE_ID_INTEL_82945GME_HB),
2679         ID(PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB),
2680         ID(PCI_DEVICE_ID_INTEL_PINEVIEW_HB),
2681         ID(PCI_DEVICE_ID_INTEL_82946GZ_HB),
2682         ID(PCI_DEVICE_ID_INTEL_82G35_HB),
2683         ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
2684         ID(PCI_DEVICE_ID_INTEL_82965G_HB),
2685         ID(PCI_DEVICE_ID_INTEL_82965GM_HB),
2686         ID(PCI_DEVICE_ID_INTEL_82965GME_HB),
2687         ID(PCI_DEVICE_ID_INTEL_G33_HB),
2688         ID(PCI_DEVICE_ID_INTEL_Q35_HB),
2689         ID(PCI_DEVICE_ID_INTEL_Q33_HB),
2690         ID(PCI_DEVICE_ID_INTEL_GM45_HB),
2691         ID(PCI_DEVICE_ID_INTEL_EAGLELAKE_HB),
2692         ID(PCI_DEVICE_ID_INTEL_Q45_HB),
2693         ID(PCI_DEVICE_ID_INTEL_G45_HB),
2694         ID(PCI_DEVICE_ID_INTEL_G41_HB),
2695         ID(PCI_DEVICE_ID_INTEL_B43_HB),
2696         ID(PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB),
2697         ID(PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB),
2698         ID(PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB),
2699         ID(PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB),
2700         ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB),
2701         ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB),
2702         { }
2703 };
2704
2705 MODULE_DEVICE_TABLE(pci, agp_intel_pci_table);
2706
2707 static struct pci_driver agp_intel_pci_driver = {
2708         .name           = "agpgart-intel",
2709         .id_table       = agp_intel_pci_table,
2710         .probe          = agp_intel_probe,
2711         .remove         = __devexit_p(agp_intel_remove),
2712 #ifdef CONFIG_PM
2713         .resume         = agp_intel_resume,
2714 #endif
2715 };
2716
2717 static int __init agp_intel_init(void)
2718 {
2719         if (agp_off)
2720                 return -EINVAL;
2721         return pci_register_driver(&agp_intel_pci_driver);
2722 }
2723
2724 static void __exit agp_intel_cleanup(void)
2725 {
2726         pci_unregister_driver(&agp_intel_pci_driver);
2727 }
2728
2729 module_init(agp_intel_init);
2730 module_exit(agp_intel_cleanup);
2731
2732 MODULE_AUTHOR("Dave Jones <davej@redhat.com>");
2733 MODULE_LICENSE("GPL and additional rights");