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 __devinit 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 __devinit int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp, 271 u16 cap) 272 { 273 u32 aper_low, aper_hi; 274 u64 aper, nb_aper; 275 int order = 0; 276 u32 nb_order, nb_base; 277 u16 apsize; 278 279 pci_read_config_dword(nb, AMD64_GARTAPERTURECTL, &nb_order); 280 nb_order = (nb_order >> 1) & 7; 281 pci_read_config_dword(nb, AMD64_GARTAPERTUREBASE, &nb_base); 282 nb_aper = nb_base << 25; 283 284 /* Northbridge seems to contain crap. Try the AGP bridge. */ 285 286 pci_read_config_word(agp, cap+0x14, &apsize); 287 if (apsize == 0xffff) { 288 if (agp_aperture_valid(nb_aper, (32*1024*1024)<<nb_order)) 289 return 0; 290 return -1; 291 } 292 293 apsize &= 0xfff; 294 /* Some BIOS use weird encodings not in the AGPv3 table. */ 295 if (apsize & 0xff) 296 apsize |= 0xf00; 297 order = 7 - hweight16(apsize); 298 299 pci_read_config_dword(agp, 0x10, &aper_low); 300 pci_read_config_dword(agp, 0x14, &aper_hi); 301 aper = (aper_low & ~((1<<22)-1)) | ((u64)aper_hi << 32); 302 303 /* 304 * On some sick chips APSIZE is 0. This means it wants 4G 305 * so let double check that order, and lets trust the AMD NB settings 306 */ 307 if (order >=0 && aper + (32ULL<<(20 + order)) > 0x100000000ULL) { 308 dev_info(&agp->dev, "aperture size %u MB is not right, using settings from NB\n", 309 32 << order); 310 order = nb_order; 311 } 312 313 if (nb_order >= order) { 314 if (agp_aperture_valid(nb_aper, (32*1024*1024)<<nb_order)) 315 return 0; 316 } 317 318 dev_info(&agp->dev, "aperture from AGP @ %Lx size %u MB\n", 319 aper, 32 << order); 320 if (order < 0 || !agp_aperture_valid(aper, (32*1024*1024)<<order)) 321 return -1; 322 323 gart_set_size_and_enable(nb, order); 324 pci_write_config_dword(nb, AMD64_GARTAPERTUREBASE, aper >> 25); 325 326 return 0; 327 } 328 329 static __devinit int cache_nbs(struct pci_dev *pdev, u32 cap_ptr) 330 { 331 int i; 332 333 if (amd_cache_northbridges() < 0) 334 return -ENODEV; 335 336 if (!amd_nb_has_feature(AMD_NB_GART)) 337 return -ENODEV; 338 339 i = 0; 340 for (i = 0; i < amd_nb_num(); i++) { 341 struct pci_dev *dev = node_to_amd_nb(i)->misc; 342 if (fix_northbridge(dev, pdev, cap_ptr) < 0) { 343 dev_err(&dev->dev, "no usable aperture found\n"); 344 #ifdef __x86_64__ 345 /* should port this to i386 */ 346 dev_err(&dev->dev, "consider rebooting with iommu=memaper=2 to get a good aperture\n"); 347 #endif 348 return -1; 349 } 350 } 351 return 0; 352 } 353 354 /* Handle AMD 8151 quirks */ 355 static void __devinit amd8151_init(struct pci_dev *pdev, struct agp_bridge_data *bridge) 356 { 357 char *revstring; 358 359 switch (pdev->revision) { 360 case 0x01: revstring="A0"; break; 361 case 0x02: revstring="A1"; break; 362 case 0x11: revstring="B0"; break; 363 case 0x12: revstring="B1"; break; 364 case 0x13: revstring="B2"; break; 365 case 0x14: revstring="B3"; break; 366 default: revstring="??"; break; 367 } 368 369 dev_info(&pdev->dev, "AMD 8151 AGP Bridge rev %s\n", revstring); 370 371 /* 372 * Work around errata. 373 * Chips before B2 stepping incorrectly reporting v3.5 374 */ 375 if (pdev->revision < 0x13) { 376 dev_info(&pdev->dev, "correcting AGP revision (reports 3.5, is really 3.0)\n"); 377 bridge->major_version = 3; 378 bridge->minor_version = 0; 379 } 380 } 381 382 383 static const struct aper_size_info_32 uli_sizes[7] = 384 { 385 {256, 65536, 6, 10}, 386 {128, 32768, 5, 9}, 387 {64, 16384, 4, 8}, 388 {32, 8192, 3, 7}, 389 {16, 4096, 2, 6}, 390 {8, 2048, 1, 4}, 391 {4, 1024, 0, 3} 392 }; 393 static int __devinit uli_agp_init(struct pci_dev *pdev) 394 { 395 u32 httfea,baseaddr,enuscr; 396 struct pci_dev *dev1; 397 int i, ret; 398 unsigned size = amd64_fetch_size(); 399 400 dev_info(&pdev->dev, "setting up ULi AGP\n"); 401 dev1 = pci_get_slot (pdev->bus,PCI_DEVFN(0,0)); 402 if (dev1 == NULL) { 403 dev_info(&pdev->dev, "can't find ULi secondary device\n"); 404 return -ENODEV; 405 } 406 407 for (i = 0; i < ARRAY_SIZE(uli_sizes); i++) 408 if (uli_sizes[i].size == size) 409 break; 410 411 if (i == ARRAY_SIZE(uli_sizes)) { 412 dev_info(&pdev->dev, "no ULi size found for %d\n", size); 413 ret = -ENODEV; 414 goto put; 415 } 416 417 /* shadow x86-64 registers into ULi registers */ 418 pci_read_config_dword (node_to_amd_nb(0)->misc, AMD64_GARTAPERTUREBASE, 419 &httfea); 420 421 /* if x86-64 aperture base is beyond 4G, exit here */ 422 if ((httfea & 0x7fff) >> (32 - 25)) { 423 ret = -ENODEV; 424 goto put; 425 } 426 427 httfea = (httfea& 0x7fff) << 25; 428 429 pci_read_config_dword(pdev, ULI_X86_64_BASE_ADDR, &baseaddr); 430 baseaddr&= ~PCI_BASE_ADDRESS_MEM_MASK; 431 baseaddr|= httfea; 432 pci_write_config_dword(pdev, ULI_X86_64_BASE_ADDR, baseaddr); 433 434 enuscr= httfea+ (size * 1024 * 1024) - 1; 435 pci_write_config_dword(dev1, ULI_X86_64_HTT_FEA_REG, httfea); 436 pci_write_config_dword(dev1, ULI_X86_64_ENU_SCR_REG, enuscr); 437 ret = 0; 438 put: 439 pci_dev_put(dev1); 440 return ret; 441 } 442 443 444 static const struct aper_size_info_32 nforce3_sizes[5] = 445 { 446 {512, 131072, 7, 0x00000000 }, 447 {256, 65536, 6, 0x00000008 }, 448 {128, 32768, 5, 0x0000000C }, 449 {64, 16384, 4, 0x0000000E }, 450 {32, 8192, 3, 0x0000000F } 451 }; 452 453 /* Handle shadow device of the Nvidia NForce3 */ 454 /* CHECK-ME original 2.4 version set up some IORRs. Check if that is needed. */ 455 static int nforce3_agp_init(struct pci_dev *pdev) 456 { 457 u32 tmp, apbase, apbar, aplimit; 458 struct pci_dev *dev1; 459 int i, ret; 460 unsigned size = amd64_fetch_size(); 461 462 dev_info(&pdev->dev, "setting up Nforce3 AGP\n"); 463 464 dev1 = pci_get_slot(pdev->bus, PCI_DEVFN(11, 0)); 465 if (dev1 == NULL) { 466 dev_info(&pdev->dev, "can't find Nforce3 secondary device\n"); 467 return -ENODEV; 468 } 469 470 for (i = 0; i < ARRAY_SIZE(nforce3_sizes); i++) 471 if (nforce3_sizes[i].size == size) 472 break; 473 474 if (i == ARRAY_SIZE(nforce3_sizes)) { 475 dev_info(&pdev->dev, "no NForce3 size found for %d\n", size); 476 ret = -ENODEV; 477 goto put; 478 } 479 480 pci_read_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, &tmp); 481 tmp &= ~(0xf); 482 tmp |= nforce3_sizes[i].size_value; 483 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, tmp); 484 485 /* shadow x86-64 registers into NVIDIA registers */ 486 pci_read_config_dword (node_to_amd_nb(0)->misc, AMD64_GARTAPERTUREBASE, 487 &apbase); 488 489 /* if x86-64 aperture base is beyond 4G, exit here */ 490 if ( (apbase & 0x7fff) >> (32 - 25) ) { 491 dev_info(&pdev->dev, "aperture base > 4G\n"); 492 ret = -ENODEV; 493 goto put; 494 } 495 496 apbase = (apbase & 0x7fff) << 25; 497 498 pci_read_config_dword(pdev, NVIDIA_X86_64_0_APBASE, &apbar); 499 apbar &= ~PCI_BASE_ADDRESS_MEM_MASK; 500 apbar |= apbase; 501 pci_write_config_dword(pdev, NVIDIA_X86_64_0_APBASE, apbar); 502 503 aplimit = apbase + (size * 1024 * 1024) - 1; 504 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE1, apbase); 505 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT1, aplimit); 506 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE2, apbase); 507 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT2, aplimit); 508 509 ret = 0; 510 put: 511 pci_dev_put(dev1); 512 513 return ret; 514 } 515 516 static int __devinit agp_amd64_probe(struct pci_dev *pdev, 517 const struct pci_device_id *ent) 518 { 519 struct agp_bridge_data *bridge; 520 u8 cap_ptr; 521 int err; 522 523 /* The Highlander principle */ 524 if (agp_bridges_found) 525 return -ENODEV; 526 527 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP); 528 if (!cap_ptr) 529 return -ENODEV; 530 531 /* Could check for AGPv3 here */ 532 533 bridge = agp_alloc_bridge(); 534 if (!bridge) 535 return -ENOMEM; 536 537 if (pdev->vendor == PCI_VENDOR_ID_AMD && 538 pdev->device == PCI_DEVICE_ID_AMD_8151_0) { 539 amd8151_init(pdev, bridge); 540 } else { 541 dev_info(&pdev->dev, "AGP bridge [%04x/%04x]\n", 542 pdev->vendor, pdev->device); 543 } 544 545 bridge->driver = &amd_8151_driver; 546 bridge->dev = pdev; 547 bridge->capndx = cap_ptr; 548 549 /* Fill in the mode register */ 550 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode); 551 552 if (cache_nbs(pdev, cap_ptr) == -1) { 553 agp_put_bridge(bridge); 554 return -ENODEV; 555 } 556 557 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA) { 558 int ret = nforce3_agp_init(pdev); 559 if (ret) { 560 agp_put_bridge(bridge); 561 return ret; 562 } 563 } 564 565 if (pdev->vendor == PCI_VENDOR_ID_AL) { 566 int ret = uli_agp_init(pdev); 567 if (ret) { 568 agp_put_bridge(bridge); 569 return ret; 570 } 571 } 572 573 pci_set_drvdata(pdev, bridge); 574 err = agp_add_bridge(bridge); 575 if (err < 0) 576 return err; 577 578 agp_bridges_found++; 579 return 0; 580 } 581 582 static void __devexit agp_amd64_remove(struct pci_dev *pdev) 583 { 584 struct agp_bridge_data *bridge = pci_get_drvdata(pdev); 585 586 release_mem_region(virt_to_phys(bridge->gatt_table_real), 587 amd64_aperture_sizes[bridge->aperture_size_idx].size); 588 agp_remove_bridge(bridge); 589 agp_put_bridge(bridge); 590 591 agp_bridges_found--; 592 } 593 594 #ifdef CONFIG_PM 595 596 static int agp_amd64_suspend(struct pci_dev *pdev, pm_message_t state) 597 { 598 pci_save_state(pdev); 599 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 600 601 return 0; 602 } 603 604 static int agp_amd64_resume(struct pci_dev *pdev) 605 { 606 pci_set_power_state(pdev, PCI_D0); 607 pci_restore_state(pdev); 608 609 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA) 610 nforce3_agp_init(pdev); 611 612 return amd_8151_configure(); 613 } 614 615 #endif /* CONFIG_PM */ 616 617 static struct pci_device_id agp_amd64_pci_table[] = { 618 { 619 .class = (PCI_CLASS_BRIDGE_HOST << 8), 620 .class_mask = ~0, 621 .vendor = PCI_VENDOR_ID_AMD, 622 .device = PCI_DEVICE_ID_AMD_8151_0, 623 .subvendor = PCI_ANY_ID, 624 .subdevice = PCI_ANY_ID, 625 }, 626 /* ULi M1689 */ 627 { 628 .class = (PCI_CLASS_BRIDGE_HOST << 8), 629 .class_mask = ~0, 630 .vendor = PCI_VENDOR_ID_AL, 631 .device = PCI_DEVICE_ID_AL_M1689, 632 .subvendor = PCI_ANY_ID, 633 .subdevice = PCI_ANY_ID, 634 }, 635 /* VIA K8T800Pro */ 636 { 637 .class = (PCI_CLASS_BRIDGE_HOST << 8), 638 .class_mask = ~0, 639 .vendor = PCI_VENDOR_ID_VIA, 640 .device = PCI_DEVICE_ID_VIA_K8T800PRO_0, 641 .subvendor = PCI_ANY_ID, 642 .subdevice = PCI_ANY_ID, 643 }, 644 /* VIA K8T800 */ 645 { 646 .class = (PCI_CLASS_BRIDGE_HOST << 8), 647 .class_mask = ~0, 648 .vendor = PCI_VENDOR_ID_VIA, 649 .device = PCI_DEVICE_ID_VIA_8385_0, 650 .subvendor = PCI_ANY_ID, 651 .subdevice = PCI_ANY_ID, 652 }, 653 /* VIA K8M800 / K8N800 */ 654 { 655 .class = (PCI_CLASS_BRIDGE_HOST << 8), 656 .class_mask = ~0, 657 .vendor = PCI_VENDOR_ID_VIA, 658 .device = PCI_DEVICE_ID_VIA_8380_0, 659 .subvendor = PCI_ANY_ID, 660 .subdevice = PCI_ANY_ID, 661 }, 662 /* VIA K8M890 / K8N890 */ 663 { 664 .class = (PCI_CLASS_BRIDGE_HOST << 8), 665 .class_mask = ~0, 666 .vendor = PCI_VENDOR_ID_VIA, 667 .device = PCI_DEVICE_ID_VIA_VT3336, 668 .subvendor = PCI_ANY_ID, 669 .subdevice = PCI_ANY_ID, 670 }, 671 /* VIA K8T890 */ 672 { 673 .class = (PCI_CLASS_BRIDGE_HOST << 8), 674 .class_mask = ~0, 675 .vendor = PCI_VENDOR_ID_VIA, 676 .device = PCI_DEVICE_ID_VIA_3238_0, 677 .subvendor = PCI_ANY_ID, 678 .subdevice = PCI_ANY_ID, 679 }, 680 /* VIA K8T800/K8M800/K8N800 */ 681 { 682 .class = (PCI_CLASS_BRIDGE_HOST << 8), 683 .class_mask = ~0, 684 .vendor = PCI_VENDOR_ID_VIA, 685 .device = PCI_DEVICE_ID_VIA_838X_1, 686 .subvendor = PCI_ANY_ID, 687 .subdevice = PCI_ANY_ID, 688 }, 689 /* NForce3 */ 690 { 691 .class = (PCI_CLASS_BRIDGE_HOST << 8), 692 .class_mask = ~0, 693 .vendor = PCI_VENDOR_ID_NVIDIA, 694 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3, 695 .subvendor = PCI_ANY_ID, 696 .subdevice = PCI_ANY_ID, 697 }, 698 { 699 .class = (PCI_CLASS_BRIDGE_HOST << 8), 700 .class_mask = ~0, 701 .vendor = PCI_VENDOR_ID_NVIDIA, 702 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3S, 703 .subvendor = PCI_ANY_ID, 704 .subdevice = PCI_ANY_ID, 705 }, 706 /* SIS 755 */ 707 { 708 .class = (PCI_CLASS_BRIDGE_HOST << 8), 709 .class_mask = ~0, 710 .vendor = PCI_VENDOR_ID_SI, 711 .device = PCI_DEVICE_ID_SI_755, 712 .subvendor = PCI_ANY_ID, 713 .subdevice = PCI_ANY_ID, 714 }, 715 /* SIS 760 */ 716 { 717 .class = (PCI_CLASS_BRIDGE_HOST << 8), 718 .class_mask = ~0, 719 .vendor = PCI_VENDOR_ID_SI, 720 .device = PCI_DEVICE_ID_SI_760, 721 .subvendor = PCI_ANY_ID, 722 .subdevice = PCI_ANY_ID, 723 }, 724 /* ALI/ULI M1695 */ 725 { 726 .class = (PCI_CLASS_BRIDGE_HOST << 8), 727 .class_mask = ~0, 728 .vendor = PCI_VENDOR_ID_AL, 729 .device = 0x1695, 730 .subvendor = PCI_ANY_ID, 731 .subdevice = PCI_ANY_ID, 732 }, 733 734 { } 735 }; 736 737 MODULE_DEVICE_TABLE(pci, agp_amd64_pci_table); 738 739 static DEFINE_PCI_DEVICE_TABLE(agp_amd64_pci_promisc_table) = { 740 { PCI_DEVICE_CLASS(0, 0) }, 741 { } 742 }; 743 744 static struct pci_driver agp_amd64_pci_driver = { 745 .name = "agpgart-amd64", 746 .id_table = agp_amd64_pci_table, 747 .probe = agp_amd64_probe, 748 .remove = agp_amd64_remove, 749 #ifdef CONFIG_PM 750 .suspend = agp_amd64_suspend, 751 .resume = agp_amd64_resume, 752 #endif 753 }; 754 755 756 /* Not static due to IOMMU code calling it early. */ 757 int __init agp_amd64_init(void) 758 { 759 int err = 0; 760 761 if (agp_off) 762 return -EINVAL; 763 764 err = pci_register_driver(&agp_amd64_pci_driver); 765 if (err < 0) 766 return err; 767 768 if (agp_bridges_found == 0) { 769 if (!agp_try_unsupported && !agp_try_unsupported_boot) { 770 printk(KERN_INFO PFX "No supported AGP bridge found.\n"); 771 #ifdef MODULE 772 printk(KERN_INFO PFX "You can try agp_try_unsupported=1\n"); 773 #else 774 printk(KERN_INFO PFX "You can boot with agp=try_unsupported\n"); 775 #endif 776 pci_unregister_driver(&agp_amd64_pci_driver); 777 return -ENODEV; 778 } 779 780 /* First check that we have at least one AMD64 NB */ 781 if (!pci_dev_present(amd_nb_misc_ids)) { 782 pci_unregister_driver(&agp_amd64_pci_driver); 783 return -ENODEV; 784 } 785 786 /* Look for any AGP bridge */ 787 agp_amd64_pci_driver.id_table = agp_amd64_pci_promisc_table; 788 err = driver_attach(&agp_amd64_pci_driver.driver); 789 if (err == 0 && agp_bridges_found == 0) { 790 pci_unregister_driver(&agp_amd64_pci_driver); 791 err = -ENODEV; 792 } 793 } 794 return err; 795 } 796 797 static int __init agp_amd64_mod_init(void) 798 { 799 #ifndef MODULE 800 if (gart_iommu_aperture) 801 return agp_bridges_found ? 0 : -ENODEV; 802 #endif 803 return agp_amd64_init(); 804 } 805 806 static void __exit agp_amd64_cleanup(void) 807 { 808 #ifndef MODULE 809 if (gart_iommu_aperture) 810 return; 811 #endif 812 if (aperture_resource) 813 release_resource(aperture_resource); 814 pci_unregister_driver(&agp_amd64_pci_driver); 815 } 816 817 module_init(agp_amd64_mod_init); 818 module_exit(agp_amd64_cleanup); 819 820 MODULE_AUTHOR("Dave Jones <davej@redhat.com>, Andi Kleen"); 821 module_param(agp_try_unsupported, bool, 0); 822 MODULE_LICENSE("GPL"); 823