1 /* 2 * Copyright 2001-2003 SuSE Labs. 3 * Distributed under the GNU public license, v2. 4 * 5 * This is a GART driver for the AMD Opteron/Athlon64 on-CPU northbridge. 6 * It also includes support for the AMD 8151 AGP bridge, 7 * although it doesn't actually do much, as all the real 8 * work is done in the northbridge(s). 9 */ 10 11 #include <linux/module.h> 12 #include <linux/pci.h> 13 #include <linux/init.h> 14 #include <linux/agp_backend.h> 15 #include <linux/mmzone.h> 16 #include <asm/page.h> /* PAGE_SIZE */ 17 #include <asm/e820.h> 18 #include <asm/amd_nb.h> 19 #include <asm/gart.h> 20 #include "agp.h" 21 22 /* NVIDIA K8 registers */ 23 #define NVIDIA_X86_64_0_APBASE 0x10 24 #define NVIDIA_X86_64_1_APBASE1 0x50 25 #define NVIDIA_X86_64_1_APLIMIT1 0x54 26 #define NVIDIA_X86_64_1_APSIZE 0xa8 27 #define NVIDIA_X86_64_1_APBASE2 0xd8 28 #define NVIDIA_X86_64_1_APLIMIT2 0xdc 29 30 /* ULi K8 registers */ 31 #define ULI_X86_64_BASE_ADDR 0x10 32 #define ULI_X86_64_HTT_FEA_REG 0x50 33 #define ULI_X86_64_ENU_SCR_REG 0x54 34 35 static struct resource *aperture_resource; 36 static bool __initdata agp_try_unsupported = 1; 37 static int agp_bridges_found; 38 39 static void amd64_tlbflush(struct agp_memory *temp) 40 { 41 amd_flush_garts(); 42 } 43 44 static int amd64_insert_memory(struct agp_memory *mem, off_t pg_start, int type) 45 { 46 int i, j, num_entries; 47 long long tmp; 48 int mask_type; 49 struct agp_bridge_data *bridge = mem->bridge; 50 u32 pte; 51 52 num_entries = agp_num_entries(); 53 54 if (type != mem->type) 55 return -EINVAL; 56 mask_type = bridge->driver->agp_type_to_mask_type(bridge, type); 57 if (mask_type != 0) 58 return -EINVAL; 59 60 61 /* Make sure we can fit the range in the gatt table. */ 62 /* FIXME: could wrap */ 63 if (((unsigned long)pg_start + mem->page_count) > num_entries) 64 return -EINVAL; 65 66 j = pg_start; 67 68 /* gatt table should be empty. */ 69 while (j < (pg_start + mem->page_count)) { 70 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j))) 71 return -EBUSY; 72 j++; 73 } 74 75 if (!mem->is_flushed) { 76 global_cache_flush(); 77 mem->is_flushed = true; 78 } 79 80 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) { 81 tmp = agp_bridge->driver->mask_memory(agp_bridge, 82 page_to_phys(mem->pages[i]), 83 mask_type); 84 85 BUG_ON(tmp & 0xffffff0000000ffcULL); 86 pte = (tmp & 0x000000ff00000000ULL) >> 28; 87 pte |=(tmp & 0x00000000fffff000ULL); 88 pte |= GPTE_VALID | GPTE_COHERENT; 89 90 writel(pte, agp_bridge->gatt_table+j); 91 readl(agp_bridge->gatt_table+j); /* PCI Posting. */ 92 } 93 amd64_tlbflush(mem); 94 return 0; 95 } 96 97 /* 98 * This hack alters the order element according 99 * to the size of a long. It sucks. I totally disown this, even 100 * though it does appear to work for the most part. 101 */ 102 static struct aper_size_info_32 amd64_aperture_sizes[7] = 103 { 104 {32, 8192, 3+(sizeof(long)/8), 0 }, 105 {64, 16384, 4+(sizeof(long)/8), 1<<1 }, 106 {128, 32768, 5+(sizeof(long)/8), 1<<2 }, 107 {256, 65536, 6+(sizeof(long)/8), 1<<1 | 1<<2 }, 108 {512, 131072, 7+(sizeof(long)/8), 1<<3 }, 109 {1024, 262144, 8+(sizeof(long)/8), 1<<1 | 1<<3}, 110 {2048, 524288, 9+(sizeof(long)/8), 1<<2 | 1<<3} 111 }; 112 113 114 /* 115 * Get the current Aperture size from the x86-64. 116 * Note, that there may be multiple x86-64's, but we just return 117 * the value from the first one we find. The set_size functions 118 * keep the rest coherent anyway. Or at least should do. 119 */ 120 static int amd64_fetch_size(void) 121 { 122 struct pci_dev *dev; 123 int i; 124 u32 temp; 125 struct aper_size_info_32 *values; 126 127 dev = node_to_amd_nb(0)->misc; 128 if (dev==NULL) 129 return 0; 130 131 pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &temp); 132 temp = (temp & 0xe); 133 values = A_SIZE_32(amd64_aperture_sizes); 134 135 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) { 136 if (temp == values[i].size_value) { 137 agp_bridge->previous_size = 138 agp_bridge->current_size = (void *) (values + i); 139 140 agp_bridge->aperture_size_idx = i; 141 return values[i].size; 142 } 143 } 144 return 0; 145 } 146 147 /* 148 * In a multiprocessor x86-64 system, this function gets 149 * called once for each CPU. 150 */ 151 static u64 amd64_configure(struct pci_dev *hammer, u64 gatt_table) 152 { 153 u64 aperturebase; 154 u32 tmp; 155 u64 aper_base; 156 157 /* Address to map to */ 158 pci_read_config_dword(hammer, AMD64_GARTAPERTUREBASE, &tmp); 159 aperturebase = tmp << 25; 160 aper_base = (aperturebase & PCI_BASE_ADDRESS_MEM_MASK); 161 162 enable_gart_translation(hammer, gatt_table); 163 164 return aper_base; 165 } 166 167 168 static const struct aper_size_info_32 amd_8151_sizes[7] = 169 { 170 {2048, 524288, 9, 0x00000000 }, /* 0 0 0 0 0 0 */ 171 {1024, 262144, 8, 0x00000400 }, /* 1 0 0 0 0 0 */ 172 {512, 131072, 7, 0x00000600 }, /* 1 1 0 0 0 0 */ 173 {256, 65536, 6, 0x00000700 }, /* 1 1 1 0 0 0 */ 174 {128, 32768, 5, 0x00000720 }, /* 1 1 1 1 0 0 */ 175 {64, 16384, 4, 0x00000730 }, /* 1 1 1 1 1 0 */ 176 {32, 8192, 3, 0x00000738 } /* 1 1 1 1 1 1 */ 177 }; 178 179 static int amd_8151_configure(void) 180 { 181 unsigned long gatt_bus = virt_to_phys(agp_bridge->gatt_table_real); 182 int i; 183 184 if (!amd_nb_has_feature(AMD_NB_GART)) 185 return 0; 186 187 /* Configure AGP regs in each x86-64 host bridge. */ 188 for (i = 0; i < amd_nb_num(); i++) { 189 agp_bridge->gart_bus_addr = 190 amd64_configure(node_to_amd_nb(i)->misc, gatt_bus); 191 } 192 amd_flush_garts(); 193 return 0; 194 } 195 196 197 static void amd64_cleanup(void) 198 { 199 u32 tmp; 200 int i; 201 202 if (!amd_nb_has_feature(AMD_NB_GART)) 203 return; 204 205 for (i = 0; i < amd_nb_num(); i++) { 206 struct pci_dev *dev = node_to_amd_nb(i)->misc; 207 /* disable gart translation */ 208 pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &tmp); 209 tmp &= ~GARTEN; 210 pci_write_config_dword(dev, AMD64_GARTAPERTURECTL, tmp); 211 } 212 } 213 214 215 static const struct agp_bridge_driver amd_8151_driver = { 216 .owner = THIS_MODULE, 217 .aperture_sizes = amd_8151_sizes, 218 .size_type = U32_APER_SIZE, 219 .num_aperture_sizes = 7, 220 .needs_scratch_page = true, 221 .configure = amd_8151_configure, 222 .fetch_size = amd64_fetch_size, 223 .cleanup = amd64_cleanup, 224 .tlb_flush = amd64_tlbflush, 225 .mask_memory = agp_generic_mask_memory, 226 .masks = NULL, 227 .agp_enable = agp_generic_enable, 228 .cache_flush = global_cache_flush, 229 .create_gatt_table = agp_generic_create_gatt_table, 230 .free_gatt_table = agp_generic_free_gatt_table, 231 .insert_memory = amd64_insert_memory, 232 .remove_memory = agp_generic_remove_memory, 233 .alloc_by_type = agp_generic_alloc_by_type, 234 .free_by_type = agp_generic_free_by_type, 235 .agp_alloc_page = agp_generic_alloc_page, 236 .agp_alloc_pages = agp_generic_alloc_pages, 237 .agp_destroy_page = agp_generic_destroy_page, 238 .agp_destroy_pages = agp_generic_destroy_pages, 239 .agp_type_to_mask_type = agp_generic_type_to_mask_type, 240 }; 241 242 /* Some basic sanity checks for the aperture. */ 243 static int agp_aperture_valid(u64 aper, u32 size) 244 { 245 if (!aperture_valid(aper, size, 32*1024*1024)) 246 return 0; 247 248 /* Request the Aperture. This catches cases when someone else 249 already put a mapping in there - happens with some very broken BIOS 250 251 Maybe better to use pci_assign_resource/pci_enable_device instead 252 trusting the bridges? */ 253 if (!aperture_resource && 254 !(aperture_resource = request_mem_region(aper, size, "aperture"))) { 255 printk(KERN_ERR PFX "Aperture conflicts with PCI mapping.\n"); 256 return 0; 257 } 258 return 1; 259 } 260 261 /* 262 * W*s centric BIOS sometimes only set up the aperture in the AGP 263 * bridge, not the northbridge. On AMD64 this is handled early 264 * in aperture.c, but when IOMMU is not enabled or we run 265 * on a 32bit kernel this needs to be redone. 266 * Unfortunately it is impossible to fix the aperture here because it's too late 267 * to allocate that much memory. But at least error out cleanly instead of 268 * crashing. 269 */ 270 static int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp, u16 cap) 271 { 272 u32 aper_low, aper_hi; 273 u64 aper, nb_aper; 274 int order = 0; 275 u32 nb_order, nb_base; 276 u16 apsize; 277 278 pci_read_config_dword(nb, AMD64_GARTAPERTURECTL, &nb_order); 279 nb_order = (nb_order >> 1) & 7; 280 pci_read_config_dword(nb, AMD64_GARTAPERTUREBASE, &nb_base); 281 nb_aper = nb_base << 25; 282 283 /* Northbridge seems to contain crap. Try the AGP bridge. */ 284 285 pci_read_config_word(agp, cap+0x14, &apsize); 286 if (apsize == 0xffff) { 287 if (agp_aperture_valid(nb_aper, (32*1024*1024)<<nb_order)) 288 return 0; 289 return -1; 290 } 291 292 apsize &= 0xfff; 293 /* Some BIOS use weird encodings not in the AGPv3 table. */ 294 if (apsize & 0xff) 295 apsize |= 0xf00; 296 order = 7 - hweight16(apsize); 297 298 pci_read_config_dword(agp, 0x10, &aper_low); 299 pci_read_config_dword(agp, 0x14, &aper_hi); 300 aper = (aper_low & ~((1<<22)-1)) | ((u64)aper_hi << 32); 301 302 /* 303 * On some sick chips APSIZE is 0. This means it wants 4G 304 * so let double check that order, and lets trust the AMD NB settings 305 */ 306 if (order >=0 && aper + (32ULL<<(20 + order)) > 0x100000000ULL) { 307 dev_info(&agp->dev, "aperture size %u MB is not right, using settings from NB\n", 308 32 << order); 309 order = nb_order; 310 } 311 312 if (nb_order >= order) { 313 if (agp_aperture_valid(nb_aper, (32*1024*1024)<<nb_order)) 314 return 0; 315 } 316 317 dev_info(&agp->dev, "aperture from AGP @ %Lx size %u MB\n", 318 aper, 32 << order); 319 if (order < 0 || !agp_aperture_valid(aper, (32*1024*1024)<<order)) 320 return -1; 321 322 gart_set_size_and_enable(nb, order); 323 pci_write_config_dword(nb, AMD64_GARTAPERTUREBASE, aper >> 25); 324 325 return 0; 326 } 327 328 static int cache_nbs(struct pci_dev *pdev, u32 cap_ptr) 329 { 330 int i; 331 332 if (amd_cache_northbridges() < 0) 333 return -ENODEV; 334 335 if (!amd_nb_has_feature(AMD_NB_GART)) 336 return -ENODEV; 337 338 i = 0; 339 for (i = 0; i < amd_nb_num(); i++) { 340 struct pci_dev *dev = node_to_amd_nb(i)->misc; 341 if (fix_northbridge(dev, pdev, cap_ptr) < 0) { 342 dev_err(&dev->dev, "no usable aperture found\n"); 343 #ifdef __x86_64__ 344 /* should port this to i386 */ 345 dev_err(&dev->dev, "consider rebooting with iommu=memaper=2 to get a good aperture\n"); 346 #endif 347 return -1; 348 } 349 } 350 return 0; 351 } 352 353 /* Handle AMD 8151 quirks */ 354 static void amd8151_init(struct pci_dev *pdev, struct agp_bridge_data *bridge) 355 { 356 char *revstring; 357 358 switch (pdev->revision) { 359 case 0x01: revstring="A0"; break; 360 case 0x02: revstring="A1"; break; 361 case 0x11: revstring="B0"; break; 362 case 0x12: revstring="B1"; break; 363 case 0x13: revstring="B2"; break; 364 case 0x14: revstring="B3"; break; 365 default: revstring="??"; break; 366 } 367 368 dev_info(&pdev->dev, "AMD 8151 AGP Bridge rev %s\n", revstring); 369 370 /* 371 * Work around errata. 372 * Chips before B2 stepping incorrectly reporting v3.5 373 */ 374 if (pdev->revision < 0x13) { 375 dev_info(&pdev->dev, "correcting AGP revision (reports 3.5, is really 3.0)\n"); 376 bridge->major_version = 3; 377 bridge->minor_version = 0; 378 } 379 } 380 381 382 static const struct aper_size_info_32 uli_sizes[7] = 383 { 384 {256, 65536, 6, 10}, 385 {128, 32768, 5, 9}, 386 {64, 16384, 4, 8}, 387 {32, 8192, 3, 7}, 388 {16, 4096, 2, 6}, 389 {8, 2048, 1, 4}, 390 {4, 1024, 0, 3} 391 }; 392 static int uli_agp_init(struct pci_dev *pdev) 393 { 394 u32 httfea,baseaddr,enuscr; 395 struct pci_dev *dev1; 396 int i, ret; 397 unsigned size = amd64_fetch_size(); 398 399 dev_info(&pdev->dev, "setting up ULi AGP\n"); 400 dev1 = pci_get_slot (pdev->bus,PCI_DEVFN(0,0)); 401 if (dev1 == NULL) { 402 dev_info(&pdev->dev, "can't find ULi secondary device\n"); 403 return -ENODEV; 404 } 405 406 for (i = 0; i < ARRAY_SIZE(uli_sizes); i++) 407 if (uli_sizes[i].size == size) 408 break; 409 410 if (i == ARRAY_SIZE(uli_sizes)) { 411 dev_info(&pdev->dev, "no ULi size found for %d\n", size); 412 ret = -ENODEV; 413 goto put; 414 } 415 416 /* shadow x86-64 registers into ULi registers */ 417 pci_read_config_dword (node_to_amd_nb(0)->misc, AMD64_GARTAPERTUREBASE, 418 &httfea); 419 420 /* if x86-64 aperture base is beyond 4G, exit here */ 421 if ((httfea & 0x7fff) >> (32 - 25)) { 422 ret = -ENODEV; 423 goto put; 424 } 425 426 httfea = (httfea& 0x7fff) << 25; 427 428 pci_read_config_dword(pdev, ULI_X86_64_BASE_ADDR, &baseaddr); 429 baseaddr&= ~PCI_BASE_ADDRESS_MEM_MASK; 430 baseaddr|= httfea; 431 pci_write_config_dword(pdev, ULI_X86_64_BASE_ADDR, baseaddr); 432 433 enuscr= httfea+ (size * 1024 * 1024) - 1; 434 pci_write_config_dword(dev1, ULI_X86_64_HTT_FEA_REG, httfea); 435 pci_write_config_dword(dev1, ULI_X86_64_ENU_SCR_REG, enuscr); 436 ret = 0; 437 put: 438 pci_dev_put(dev1); 439 return ret; 440 } 441 442 443 static const struct aper_size_info_32 nforce3_sizes[5] = 444 { 445 {512, 131072, 7, 0x00000000 }, 446 {256, 65536, 6, 0x00000008 }, 447 {128, 32768, 5, 0x0000000C }, 448 {64, 16384, 4, 0x0000000E }, 449 {32, 8192, 3, 0x0000000F } 450 }; 451 452 /* Handle shadow device of the Nvidia NForce3 */ 453 /* CHECK-ME original 2.4 version set up some IORRs. Check if that is needed. */ 454 static int nforce3_agp_init(struct pci_dev *pdev) 455 { 456 u32 tmp, apbase, apbar, aplimit; 457 struct pci_dev *dev1; 458 int i, ret; 459 unsigned size = amd64_fetch_size(); 460 461 dev_info(&pdev->dev, "setting up Nforce3 AGP\n"); 462 463 dev1 = pci_get_slot(pdev->bus, PCI_DEVFN(11, 0)); 464 if (dev1 == NULL) { 465 dev_info(&pdev->dev, "can't find Nforce3 secondary device\n"); 466 return -ENODEV; 467 } 468 469 for (i = 0; i < ARRAY_SIZE(nforce3_sizes); i++) 470 if (nforce3_sizes[i].size == size) 471 break; 472 473 if (i == ARRAY_SIZE(nforce3_sizes)) { 474 dev_info(&pdev->dev, "no NForce3 size found for %d\n", size); 475 ret = -ENODEV; 476 goto put; 477 } 478 479 pci_read_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, &tmp); 480 tmp &= ~(0xf); 481 tmp |= nforce3_sizes[i].size_value; 482 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, tmp); 483 484 /* shadow x86-64 registers into NVIDIA registers */ 485 pci_read_config_dword (node_to_amd_nb(0)->misc, AMD64_GARTAPERTUREBASE, 486 &apbase); 487 488 /* if x86-64 aperture base is beyond 4G, exit here */ 489 if ( (apbase & 0x7fff) >> (32 - 25) ) { 490 dev_info(&pdev->dev, "aperture base > 4G\n"); 491 ret = -ENODEV; 492 goto put; 493 } 494 495 apbase = (apbase & 0x7fff) << 25; 496 497 pci_read_config_dword(pdev, NVIDIA_X86_64_0_APBASE, &apbar); 498 apbar &= ~PCI_BASE_ADDRESS_MEM_MASK; 499 apbar |= apbase; 500 pci_write_config_dword(pdev, NVIDIA_X86_64_0_APBASE, apbar); 501 502 aplimit = apbase + (size * 1024 * 1024) - 1; 503 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE1, apbase); 504 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT1, aplimit); 505 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE2, apbase); 506 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT2, aplimit); 507 508 ret = 0; 509 put: 510 pci_dev_put(dev1); 511 512 return ret; 513 } 514 515 static int agp_amd64_probe(struct pci_dev *pdev, 516 const struct pci_device_id *ent) 517 { 518 struct agp_bridge_data *bridge; 519 u8 cap_ptr; 520 int err; 521 522 /* The Highlander principle */ 523 if (agp_bridges_found) 524 return -ENODEV; 525 526 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP); 527 if (!cap_ptr) 528 return -ENODEV; 529 530 /* Could check for AGPv3 here */ 531 532 bridge = agp_alloc_bridge(); 533 if (!bridge) 534 return -ENOMEM; 535 536 if (pdev->vendor == PCI_VENDOR_ID_AMD && 537 pdev->device == PCI_DEVICE_ID_AMD_8151_0) { 538 amd8151_init(pdev, bridge); 539 } else { 540 dev_info(&pdev->dev, "AGP bridge [%04x/%04x]\n", 541 pdev->vendor, pdev->device); 542 } 543 544 bridge->driver = &amd_8151_driver; 545 bridge->dev = pdev; 546 bridge->capndx = cap_ptr; 547 548 /* Fill in the mode register */ 549 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode); 550 551 if (cache_nbs(pdev, cap_ptr) == -1) { 552 agp_put_bridge(bridge); 553 return -ENODEV; 554 } 555 556 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA) { 557 int ret = nforce3_agp_init(pdev); 558 if (ret) { 559 agp_put_bridge(bridge); 560 return ret; 561 } 562 } 563 564 if (pdev->vendor == PCI_VENDOR_ID_AL) { 565 int ret = uli_agp_init(pdev); 566 if (ret) { 567 agp_put_bridge(bridge); 568 return ret; 569 } 570 } 571 572 pci_set_drvdata(pdev, bridge); 573 err = agp_add_bridge(bridge); 574 if (err < 0) 575 return err; 576 577 agp_bridges_found++; 578 return 0; 579 } 580 581 static void agp_amd64_remove(struct pci_dev *pdev) 582 { 583 struct agp_bridge_data *bridge = pci_get_drvdata(pdev); 584 585 release_mem_region(virt_to_phys(bridge->gatt_table_real), 586 amd64_aperture_sizes[bridge->aperture_size_idx].size); 587 agp_remove_bridge(bridge); 588 agp_put_bridge(bridge); 589 590 agp_bridges_found--; 591 } 592 593 #ifdef CONFIG_PM 594 595 static int agp_amd64_suspend(struct pci_dev *pdev, pm_message_t state) 596 { 597 pci_save_state(pdev); 598 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 599 600 return 0; 601 } 602 603 static int agp_amd64_resume(struct pci_dev *pdev) 604 { 605 pci_set_power_state(pdev, PCI_D0); 606 pci_restore_state(pdev); 607 608 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA) 609 nforce3_agp_init(pdev); 610 611 return amd_8151_configure(); 612 } 613 614 #endif /* CONFIG_PM */ 615 616 static struct pci_device_id agp_amd64_pci_table[] = { 617 { 618 .class = (PCI_CLASS_BRIDGE_HOST << 8), 619 .class_mask = ~0, 620 .vendor = PCI_VENDOR_ID_AMD, 621 .device = PCI_DEVICE_ID_AMD_8151_0, 622 .subvendor = PCI_ANY_ID, 623 .subdevice = PCI_ANY_ID, 624 }, 625 /* ULi M1689 */ 626 { 627 .class = (PCI_CLASS_BRIDGE_HOST << 8), 628 .class_mask = ~0, 629 .vendor = PCI_VENDOR_ID_AL, 630 .device = PCI_DEVICE_ID_AL_M1689, 631 .subvendor = PCI_ANY_ID, 632 .subdevice = PCI_ANY_ID, 633 }, 634 /* VIA K8T800Pro */ 635 { 636 .class = (PCI_CLASS_BRIDGE_HOST << 8), 637 .class_mask = ~0, 638 .vendor = PCI_VENDOR_ID_VIA, 639 .device = PCI_DEVICE_ID_VIA_K8T800PRO_0, 640 .subvendor = PCI_ANY_ID, 641 .subdevice = PCI_ANY_ID, 642 }, 643 /* VIA K8T800 */ 644 { 645 .class = (PCI_CLASS_BRIDGE_HOST << 8), 646 .class_mask = ~0, 647 .vendor = PCI_VENDOR_ID_VIA, 648 .device = PCI_DEVICE_ID_VIA_8385_0, 649 .subvendor = PCI_ANY_ID, 650 .subdevice = PCI_ANY_ID, 651 }, 652 /* VIA K8M800 / K8N800 */ 653 { 654 .class = (PCI_CLASS_BRIDGE_HOST << 8), 655 .class_mask = ~0, 656 .vendor = PCI_VENDOR_ID_VIA, 657 .device = PCI_DEVICE_ID_VIA_8380_0, 658 .subvendor = PCI_ANY_ID, 659 .subdevice = PCI_ANY_ID, 660 }, 661 /* VIA K8M890 / K8N890 */ 662 { 663 .class = (PCI_CLASS_BRIDGE_HOST << 8), 664 .class_mask = ~0, 665 .vendor = PCI_VENDOR_ID_VIA, 666 .device = PCI_DEVICE_ID_VIA_VT3336, 667 .subvendor = PCI_ANY_ID, 668 .subdevice = PCI_ANY_ID, 669 }, 670 /* VIA K8T890 */ 671 { 672 .class = (PCI_CLASS_BRIDGE_HOST << 8), 673 .class_mask = ~0, 674 .vendor = PCI_VENDOR_ID_VIA, 675 .device = PCI_DEVICE_ID_VIA_3238_0, 676 .subvendor = PCI_ANY_ID, 677 .subdevice = PCI_ANY_ID, 678 }, 679 /* VIA K8T800/K8M800/K8N800 */ 680 { 681 .class = (PCI_CLASS_BRIDGE_HOST << 8), 682 .class_mask = ~0, 683 .vendor = PCI_VENDOR_ID_VIA, 684 .device = PCI_DEVICE_ID_VIA_838X_1, 685 .subvendor = PCI_ANY_ID, 686 .subdevice = PCI_ANY_ID, 687 }, 688 /* NForce3 */ 689 { 690 .class = (PCI_CLASS_BRIDGE_HOST << 8), 691 .class_mask = ~0, 692 .vendor = PCI_VENDOR_ID_NVIDIA, 693 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3, 694 .subvendor = PCI_ANY_ID, 695 .subdevice = PCI_ANY_ID, 696 }, 697 { 698 .class = (PCI_CLASS_BRIDGE_HOST << 8), 699 .class_mask = ~0, 700 .vendor = PCI_VENDOR_ID_NVIDIA, 701 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3S, 702 .subvendor = PCI_ANY_ID, 703 .subdevice = PCI_ANY_ID, 704 }, 705 /* SIS 755 */ 706 { 707 .class = (PCI_CLASS_BRIDGE_HOST << 8), 708 .class_mask = ~0, 709 .vendor = PCI_VENDOR_ID_SI, 710 .device = PCI_DEVICE_ID_SI_755, 711 .subvendor = PCI_ANY_ID, 712 .subdevice = PCI_ANY_ID, 713 }, 714 /* SIS 760 */ 715 { 716 .class = (PCI_CLASS_BRIDGE_HOST << 8), 717 .class_mask = ~0, 718 .vendor = PCI_VENDOR_ID_SI, 719 .device = PCI_DEVICE_ID_SI_760, 720 .subvendor = PCI_ANY_ID, 721 .subdevice = PCI_ANY_ID, 722 }, 723 /* ALI/ULI M1695 */ 724 { 725 .class = (PCI_CLASS_BRIDGE_HOST << 8), 726 .class_mask = ~0, 727 .vendor = PCI_VENDOR_ID_AL, 728 .device = 0x1695, 729 .subvendor = PCI_ANY_ID, 730 .subdevice = PCI_ANY_ID, 731 }, 732 733 { } 734 }; 735 736 MODULE_DEVICE_TABLE(pci, agp_amd64_pci_table); 737 738 static const struct pci_device_id agp_amd64_pci_promisc_table[] = { 739 { PCI_DEVICE_CLASS(0, 0) }, 740 { } 741 }; 742 743 static struct pci_driver agp_amd64_pci_driver = { 744 .name = "agpgart-amd64", 745 .id_table = agp_amd64_pci_table, 746 .probe = agp_amd64_probe, 747 .remove = agp_amd64_remove, 748 #ifdef CONFIG_PM 749 .suspend = agp_amd64_suspend, 750 .resume = agp_amd64_resume, 751 #endif 752 }; 753 754 755 /* Not static due to IOMMU code calling it early. */ 756 int __init agp_amd64_init(void) 757 { 758 int err = 0; 759 760 if (agp_off) 761 return -EINVAL; 762 763 err = pci_register_driver(&agp_amd64_pci_driver); 764 if (err < 0) 765 return err; 766 767 if (agp_bridges_found == 0) { 768 if (!agp_try_unsupported && !agp_try_unsupported_boot) { 769 printk(KERN_INFO PFX "No supported AGP bridge found.\n"); 770 #ifdef MODULE 771 printk(KERN_INFO PFX "You can try agp_try_unsupported=1\n"); 772 #else 773 printk(KERN_INFO PFX "You can boot with agp=try_unsupported\n"); 774 #endif 775 pci_unregister_driver(&agp_amd64_pci_driver); 776 return -ENODEV; 777 } 778 779 /* First check that we have at least one AMD64 NB */ 780 if (!pci_dev_present(amd_nb_misc_ids)) { 781 pci_unregister_driver(&agp_amd64_pci_driver); 782 return -ENODEV; 783 } 784 785 /* Look for any AGP bridge */ 786 agp_amd64_pci_driver.id_table = agp_amd64_pci_promisc_table; 787 err = driver_attach(&agp_amd64_pci_driver.driver); 788 if (err == 0 && agp_bridges_found == 0) { 789 pci_unregister_driver(&agp_amd64_pci_driver); 790 err = -ENODEV; 791 } 792 } 793 return err; 794 } 795 796 static int __init agp_amd64_mod_init(void) 797 { 798 #ifndef MODULE 799 if (gart_iommu_aperture) 800 return agp_bridges_found ? 0 : -ENODEV; 801 #endif 802 return agp_amd64_init(); 803 } 804 805 static void __exit agp_amd64_cleanup(void) 806 { 807 #ifndef MODULE 808 if (gart_iommu_aperture) 809 return; 810 #endif 811 if (aperture_resource) 812 release_resource(aperture_resource); 813 pci_unregister_driver(&agp_amd64_pci_driver); 814 } 815 816 module_init(agp_amd64_mod_init); 817 module_exit(agp_amd64_cleanup); 818 819 MODULE_AUTHOR("Dave Jones <davej@redhat.com>, Andi Kleen"); 820 module_param(agp_try_unsupported, bool, 0); 821 MODULE_LICENSE("GPL"); 822