1 /* 2 * This file contains work-arounds for many known PCI hardware 3 * bugs. Devices present only on certain architectures (host 4 * bridges et cetera) should be handled in arch-specific code. 5 * 6 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init. 7 * 8 * Copyright (c) 1999 Martin Mares <mj@ucw.cz> 9 * 10 * Init/reset quirks for USB host controllers should be in the 11 * USB quirks file, where their drivers can access reuse it. 12 * 13 * The bridge optimization stuff has been removed. If you really 14 * have a silly BIOS which is unable to set your host bridge right, 15 * use the PowerTweak utility (see http://powertweak.sourceforge.net). 16 */ 17 18 #include <linux/types.h> 19 #include <linux/kernel.h> 20 #include <linux/pci.h> 21 #include <linux/init.h> 22 #include <linux/delay.h> 23 #include <linux/acpi.h> 24 #include <linux/kallsyms.h> 25 #include <linux/dmi.h> 26 #include <linux/pci-aspm.h> 27 #include <linux/ioport.h> 28 #include <asm/dma.h> /* isa_dma_bridge_buggy */ 29 #include "pci.h" 30 31 /* 32 * This quirk function disables memory decoding and releases memory resources 33 * of the device specified by kernel's boot parameter 'pci=resource_alignment='. 34 * It also rounds up size to specified alignment. 35 * Later on, the kernel will assign page-aligned memory resource back 36 * to the device. 37 */ 38 static void __devinit quirk_resource_alignment(struct pci_dev *dev) 39 { 40 int i; 41 struct resource *r; 42 resource_size_t align, size; 43 u16 command; 44 45 if (!pci_is_reassigndev(dev)) 46 return; 47 48 if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL && 49 (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) { 50 dev_warn(&dev->dev, 51 "Can't reassign resources to host bridge.\n"); 52 return; 53 } 54 55 dev_info(&dev->dev, 56 "Disabling memory decoding and releasing memory resources.\n"); 57 pci_read_config_word(dev, PCI_COMMAND, &command); 58 command &= ~PCI_COMMAND_MEMORY; 59 pci_write_config_word(dev, PCI_COMMAND, command); 60 61 align = pci_specified_resource_alignment(dev); 62 for (i=0; i < PCI_BRIDGE_RESOURCES; i++) { 63 r = &dev->resource[i]; 64 if (!(r->flags & IORESOURCE_MEM)) 65 continue; 66 size = resource_size(r); 67 if (size < align) { 68 size = align; 69 dev_info(&dev->dev, 70 "Rounding up size of resource #%d to %#llx.\n", 71 i, (unsigned long long)size); 72 } 73 r->end = size - 1; 74 r->start = 0; 75 } 76 /* Need to disable bridge's resource window, 77 * to enable the kernel to reassign new resource 78 * window later on. 79 */ 80 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE && 81 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { 82 for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) { 83 r = &dev->resource[i]; 84 if (!(r->flags & IORESOURCE_MEM)) 85 continue; 86 r->end = resource_size(r) - 1; 87 r->start = 0; 88 } 89 pci_disable_bridge_window(dev); 90 } 91 } 92 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment); 93 94 /* 95 * Decoding should be disabled for a PCI device during BAR sizing to avoid 96 * conflict. But doing so may cause problems on host bridge and perhaps other 97 * key system devices. For devices that need to have mmio decoding always-on, 98 * we need to set the dev->mmio_always_on bit. 99 */ 100 static void __devinit quirk_mmio_always_on(struct pci_dev *dev) 101 { 102 if ((dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) 103 dev->mmio_always_on = 1; 104 } 105 DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_mmio_always_on); 106 107 /* The Mellanox Tavor device gives false positive parity errors 108 * Mark this device with a broken_parity_status, to allow 109 * PCI scanning code to "skip" this now blacklisted device. 110 */ 111 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev) 112 { 113 dev->broken_parity_status = 1; /* This device gives false positives */ 114 } 115 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor); 116 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor); 117 118 /* Deal with broken BIOS'es that neglect to enable passive release, 119 which can cause problems in combination with the 82441FX/PPro MTRRs */ 120 static void quirk_passive_release(struct pci_dev *dev) 121 { 122 struct pci_dev *d = NULL; 123 unsigned char dlc; 124 125 /* We have to make sure a particular bit is set in the PIIX3 126 ISA bridge, so we have to go out and find it. */ 127 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) { 128 pci_read_config_byte(d, 0x82, &dlc); 129 if (!(dlc & 1<<1)) { 130 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n"); 131 dlc |= 1<<1; 132 pci_write_config_byte(d, 0x82, dlc); 133 } 134 } 135 } 136 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 137 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 138 139 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround 140 but VIA don't answer queries. If you happen to have good contacts at VIA 141 ask them for me please -- Alan 142 143 This appears to be BIOS not version dependent. So presumably there is a 144 chipset level fix */ 145 146 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev) 147 { 148 if (!isa_dma_bridge_buggy) { 149 isa_dma_bridge_buggy=1; 150 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n"); 151 } 152 } 153 /* 154 * Its not totally clear which chipsets are the problematic ones 155 * We know 82C586 and 82C596 variants are affected. 156 */ 157 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs); 158 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs); 159 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs); 160 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs); 161 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs); 162 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs); 163 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs); 164 165 /* 166 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear 167 * for some HT machines to use C4 w/o hanging. 168 */ 169 static void __devinit quirk_tigerpoint_bm_sts(struct pci_dev *dev) 170 { 171 u32 pmbase; 172 u16 pm1a; 173 174 pci_read_config_dword(dev, 0x40, &pmbase); 175 pmbase = pmbase & 0xff80; 176 pm1a = inw(pmbase); 177 178 if (pm1a & 0x10) { 179 dev_info(&dev->dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n"); 180 outw(0x10, pmbase); 181 } 182 } 183 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts); 184 185 /* 186 * Chipsets where PCI->PCI transfers vanish or hang 187 */ 188 static void __devinit quirk_nopcipci(struct pci_dev *dev) 189 { 190 if ((pci_pci_problems & PCIPCI_FAIL)==0) { 191 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n"); 192 pci_pci_problems |= PCIPCI_FAIL; 193 } 194 } 195 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci); 196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci); 197 198 static void __devinit quirk_nopciamd(struct pci_dev *dev) 199 { 200 u8 rev; 201 pci_read_config_byte(dev, 0x08, &rev); 202 if (rev == 0x13) { 203 /* Erratum 24 */ 204 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n"); 205 pci_pci_problems |= PCIAGP_FAIL; 206 } 207 } 208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd); 209 210 /* 211 * Triton requires workarounds to be used by the drivers 212 */ 213 static void __devinit quirk_triton(struct pci_dev *dev) 214 { 215 if ((pci_pci_problems&PCIPCI_TRITON)==0) { 216 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 217 pci_pci_problems |= PCIPCI_TRITON; 218 } 219 } 220 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton); 221 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton); 222 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton); 223 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton); 224 225 /* 226 * VIA Apollo KT133 needs PCI latency patch 227 * Made according to a windows driver based patch by George E. Breese 228 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm 229 * and http://www.georgebreese.com/net/software/#PCI 230 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for 231 * the info on which Mr Breese based his work. 232 * 233 * Updated based on further information from the site and also on 234 * information provided by VIA 235 */ 236 static void quirk_vialatency(struct pci_dev *dev) 237 { 238 struct pci_dev *p; 239 u8 busarb; 240 /* Ok we have a potential problem chipset here. Now see if we have 241 a buggy southbridge */ 242 243 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL); 244 if (p!=NULL) { 245 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */ 246 /* Check for buggy part revisions */ 247 if (p->revision < 0x40 || p->revision > 0x42) 248 goto exit; 249 } else { 250 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL); 251 if (p==NULL) /* No problem parts */ 252 goto exit; 253 /* Check for buggy part revisions */ 254 if (p->revision < 0x10 || p->revision > 0x12) 255 goto exit; 256 } 257 258 /* 259 * Ok we have the problem. Now set the PCI master grant to 260 * occur every master grant. The apparent bug is that under high 261 * PCI load (quite common in Linux of course) you can get data 262 * loss when the CPU is held off the bus for 3 bus master requests 263 * This happens to include the IDE controllers.... 264 * 265 * VIA only apply this fix when an SB Live! is present but under 266 * both Linux and Windows this isnt enough, and we have seen 267 * corruption without SB Live! but with things like 3 UDMA IDE 268 * controllers. So we ignore that bit of the VIA recommendation.. 269 */ 270 271 pci_read_config_byte(dev, 0x76, &busarb); 272 /* Set bit 4 and bi 5 of byte 76 to 0x01 273 "Master priority rotation on every PCI master grant */ 274 busarb &= ~(1<<5); 275 busarb |= (1<<4); 276 pci_write_config_byte(dev, 0x76, busarb); 277 dev_info(&dev->dev, "Applying VIA southbridge workaround\n"); 278 exit: 279 pci_dev_put(p); 280 } 281 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 282 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 283 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 284 /* Must restore this on a resume from RAM */ 285 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 286 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 287 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 288 289 /* 290 * VIA Apollo VP3 needs ETBF on BT848/878 291 */ 292 static void __devinit quirk_viaetbf(struct pci_dev *dev) 293 { 294 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) { 295 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 296 pci_pci_problems |= PCIPCI_VIAETBF; 297 } 298 } 299 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf); 300 301 static void __devinit quirk_vsfx(struct pci_dev *dev) 302 { 303 if ((pci_pci_problems&PCIPCI_VSFX)==0) { 304 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 305 pci_pci_problems |= PCIPCI_VSFX; 306 } 307 } 308 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx); 309 310 /* 311 * Ali Magik requires workarounds to be used by the drivers 312 * that DMA to AGP space. Latency must be set to 0xA and triton 313 * workaround applied too 314 * [Info kindly provided by ALi] 315 */ 316 static void __init quirk_alimagik(struct pci_dev *dev) 317 { 318 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) { 319 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 320 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON; 321 } 322 } 323 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik); 324 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik); 325 326 /* 327 * Natoma has some interesting boundary conditions with Zoran stuff 328 * at least 329 */ 330 static void __devinit quirk_natoma(struct pci_dev *dev) 331 { 332 if ((pci_pci_problems&PCIPCI_NATOMA)==0) { 333 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 334 pci_pci_problems |= PCIPCI_NATOMA; 335 } 336 } 337 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma); 338 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma); 339 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma); 340 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma); 341 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma); 342 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma); 343 344 /* 345 * This chip can cause PCI parity errors if config register 0xA0 is read 346 * while DMAs are occurring. 347 */ 348 static void __devinit quirk_citrine(struct pci_dev *dev) 349 { 350 dev->cfg_size = 0xA0; 351 } 352 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine); 353 354 /* 355 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M. 356 * If it's needed, re-allocate the region. 357 */ 358 static void __devinit quirk_s3_64M(struct pci_dev *dev) 359 { 360 struct resource *r = &dev->resource[0]; 361 362 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) { 363 r->start = 0; 364 r->end = 0x3ffffff; 365 } 366 } 367 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M); 368 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M); 369 370 /* 371 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS 372 * ver. 1.33 20070103) don't set the correct ISA PCI region header info. 373 * BAR0 should be 8 bytes; instead, it may be set to something like 8k 374 * (which conflicts w/ BAR1's memory range). 375 */ 376 static void __devinit quirk_cs5536_vsa(struct pci_dev *dev) 377 { 378 if (pci_resource_len(dev, 0) != 8) { 379 struct resource *res = &dev->resource[0]; 380 res->end = res->start + 8 - 1; 381 dev_info(&dev->dev, "CS5536 ISA bridge bug detected " 382 "(incorrect header); workaround applied.\n"); 383 } 384 } 385 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa); 386 387 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region, 388 unsigned size, int nr, const char *name) 389 { 390 region &= ~(size-1); 391 if (region) { 392 struct pci_bus_region bus_region; 393 struct resource *res = dev->resource + nr; 394 395 res->name = pci_name(dev); 396 res->start = region; 397 res->end = region + size - 1; 398 res->flags = IORESOURCE_IO; 399 400 /* Convert from PCI bus to resource space. */ 401 bus_region.start = res->start; 402 bus_region.end = res->end; 403 pcibios_bus_to_resource(dev, res, &bus_region); 404 405 if (pci_claim_resource(dev, nr) == 0) 406 dev_info(&dev->dev, "quirk: %pR claimed by %s\n", 407 res, name); 408 } 409 } 410 411 /* 412 * ATI Northbridge setups MCE the processor if you even 413 * read somewhere between 0x3b0->0x3bb or read 0x3d3 414 */ 415 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev) 416 { 417 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n"); 418 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */ 419 request_region(0x3b0, 0x0C, "RadeonIGP"); 420 request_region(0x3d3, 0x01, "RadeonIGP"); 421 } 422 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce); 423 424 /* 425 * Let's make the southbridge information explicit instead 426 * of having to worry about people probing the ACPI areas, 427 * for example.. (Yes, it happens, and if you read the wrong 428 * ACPI register it will put the machine to sleep with no 429 * way of waking it up again. Bummer). 430 * 431 * ALI M7101: Two IO regions pointed to by words at 432 * 0xE0 (64 bytes of ACPI registers) 433 * 0xE2 (32 bytes of SMB registers) 434 */ 435 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev) 436 { 437 u16 region; 438 439 pci_read_config_word(dev, 0xE0, ®ion); 440 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI"); 441 pci_read_config_word(dev, 0xE2, ®ion); 442 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB"); 443 } 444 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi); 445 446 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 447 { 448 u32 devres; 449 u32 mask, size, base; 450 451 pci_read_config_dword(dev, port, &devres); 452 if ((devres & enable) != enable) 453 return; 454 mask = (devres >> 16) & 15; 455 base = devres & 0xffff; 456 size = 16; 457 for (;;) { 458 unsigned bit = size >> 1; 459 if ((bit & mask) == bit) 460 break; 461 size = bit; 462 } 463 /* 464 * For now we only print it out. Eventually we'll want to 465 * reserve it (at least if it's in the 0x1000+ range), but 466 * let's get enough confirmation reports first. 467 */ 468 base &= -size; 469 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1); 470 } 471 472 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 473 { 474 u32 devres; 475 u32 mask, size, base; 476 477 pci_read_config_dword(dev, port, &devres); 478 if ((devres & enable) != enable) 479 return; 480 base = devres & 0xffff0000; 481 mask = (devres & 0x3f) << 16; 482 size = 128 << 16; 483 for (;;) { 484 unsigned bit = size >> 1; 485 if ((bit & mask) == bit) 486 break; 487 size = bit; 488 } 489 /* 490 * For now we only print it out. Eventually we'll want to 491 * reserve it, but let's get enough confirmation reports first. 492 */ 493 base &= -size; 494 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1); 495 } 496 497 /* 498 * PIIX4 ACPI: Two IO regions pointed to by longwords at 499 * 0x40 (64 bytes of ACPI registers) 500 * 0x90 (16 bytes of SMB registers) 501 * and a few strange programmable PIIX4 device resources. 502 */ 503 static void __devinit quirk_piix4_acpi(struct pci_dev *dev) 504 { 505 u32 region, res_a; 506 507 pci_read_config_dword(dev, 0x40, ®ion); 508 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI"); 509 pci_read_config_dword(dev, 0x90, ®ion); 510 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB"); 511 512 /* Device resource A has enables for some of the other ones */ 513 pci_read_config_dword(dev, 0x5c, &res_a); 514 515 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21); 516 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21); 517 518 /* Device resource D is just bitfields for static resources */ 519 520 /* Device 12 enabled? */ 521 if (res_a & (1 << 29)) { 522 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20); 523 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7); 524 } 525 /* Device 13 enabled? */ 526 if (res_a & (1 << 30)) { 527 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20); 528 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7); 529 } 530 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20); 531 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); 532 } 533 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi); 534 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi); 535 536 #define ICH_PMBASE 0x40 537 #define ICH_ACPI_CNTL 0x44 538 #define ICH4_ACPI_EN 0x10 539 #define ICH6_ACPI_EN 0x80 540 #define ICH4_GPIOBASE 0x58 541 #define ICH4_GPIO_CNTL 0x5c 542 #define ICH4_GPIO_EN 0x10 543 #define ICH6_GPIOBASE 0x48 544 #define ICH6_GPIO_CNTL 0x4c 545 #define ICH6_GPIO_EN 0x10 546 547 /* 548 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at 549 * 0x40 (128 bytes of ACPI, GPIO & TCO registers) 550 * 0x58 (64 bytes of GPIO I/O space) 551 */ 552 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev) 553 { 554 u32 region; 555 u8 enable; 556 557 /* 558 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict 559 * with low legacy (and fixed) ports. We don't know the decoding 560 * priority and can't tell whether the legacy device or the one created 561 * here is really at that address. This happens on boards with broken 562 * BIOSes. 563 */ 564 565 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); 566 if (enable & ICH4_ACPI_EN) { 567 pci_read_config_dword(dev, ICH_PMBASE, ®ion); 568 region &= PCI_BASE_ADDRESS_IO_MASK; 569 if (region >= PCIBIOS_MIN_IO) 570 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, 571 "ICH4 ACPI/GPIO/TCO"); 572 } 573 574 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable); 575 if (enable & ICH4_GPIO_EN) { 576 pci_read_config_dword(dev, ICH4_GPIOBASE, ®ion); 577 region &= PCI_BASE_ADDRESS_IO_MASK; 578 if (region >= PCIBIOS_MIN_IO) 579 quirk_io_region(dev, region, 64, 580 PCI_BRIDGE_RESOURCES + 1, "ICH4 GPIO"); 581 } 582 } 583 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi); 584 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi); 585 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi); 586 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi); 587 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi); 588 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi); 589 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi); 590 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi); 591 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi); 592 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi); 593 594 static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev) 595 { 596 u32 region; 597 u8 enable; 598 599 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); 600 if (enable & ICH6_ACPI_EN) { 601 pci_read_config_dword(dev, ICH_PMBASE, ®ion); 602 region &= PCI_BASE_ADDRESS_IO_MASK; 603 if (region >= PCIBIOS_MIN_IO) 604 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, 605 "ICH6 ACPI/GPIO/TCO"); 606 } 607 608 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable); 609 if (enable & ICH4_GPIO_EN) { 610 pci_read_config_dword(dev, ICH6_GPIOBASE, ®ion); 611 region &= PCI_BASE_ADDRESS_IO_MASK; 612 if (region >= PCIBIOS_MIN_IO) 613 quirk_io_region(dev, region, 64, 614 PCI_BRIDGE_RESOURCES + 1, "ICH6 GPIO"); 615 } 616 } 617 618 static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize) 619 { 620 u32 val; 621 u32 size, base; 622 623 pci_read_config_dword(dev, reg, &val); 624 625 /* Enabled? */ 626 if (!(val & 1)) 627 return; 628 base = val & 0xfffc; 629 if (dynsize) { 630 /* 631 * This is not correct. It is 16, 32 or 64 bytes depending on 632 * register D31:F0:ADh bits 5:4. 633 * 634 * But this gets us at least _part_ of it. 635 */ 636 size = 16; 637 } else { 638 size = 128; 639 } 640 base &= ~(size-1); 641 642 /* Just print it out for now. We should reserve it after more debugging */ 643 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1); 644 } 645 646 static void __devinit quirk_ich6_lpc(struct pci_dev *dev) 647 { 648 /* Shared ACPI/GPIO decode with all ICH6+ */ 649 ich6_lpc_acpi_gpio(dev); 650 651 /* ICH6-specific generic IO decode */ 652 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0); 653 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1); 654 } 655 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc); 656 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc); 657 658 static void __devinit ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name) 659 { 660 u32 val; 661 u32 mask, base; 662 663 pci_read_config_dword(dev, reg, &val); 664 665 /* Enabled? */ 666 if (!(val & 1)) 667 return; 668 669 /* 670 * IO base in bits 15:2, mask in bits 23:18, both 671 * are dword-based 672 */ 673 base = val & 0xfffc; 674 mask = (val >> 16) & 0xfc; 675 mask |= 3; 676 677 /* Just print it out for now. We should reserve it after more debugging */ 678 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask); 679 } 680 681 /* ICH7-10 has the same common LPC generic IO decode registers */ 682 static void __devinit quirk_ich7_lpc(struct pci_dev *dev) 683 { 684 /* We share the common ACPI/DPIO decode with ICH6 */ 685 ich6_lpc_acpi_gpio(dev); 686 687 /* And have 4 ICH7+ generic decodes */ 688 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1"); 689 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2"); 690 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3"); 691 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4"); 692 } 693 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc); 694 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc); 695 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc); 696 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc); 697 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc); 698 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc); 699 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc); 700 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc); 701 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc); 702 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc); 703 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc); 704 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc); 705 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc); 706 707 /* 708 * VIA ACPI: One IO region pointed to by longword at 709 * 0x48 or 0x20 (256 bytes of ACPI registers) 710 */ 711 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev) 712 { 713 u32 region; 714 715 if (dev->revision & 0x10) { 716 pci_read_config_dword(dev, 0x48, ®ion); 717 region &= PCI_BASE_ADDRESS_IO_MASK; 718 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI"); 719 } 720 } 721 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi); 722 723 /* 724 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at 725 * 0x48 (256 bytes of ACPI registers) 726 * 0x70 (128 bytes of hardware monitoring register) 727 * 0x90 (16 bytes of SMB registers) 728 */ 729 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev) 730 { 731 u16 hm; 732 u32 smb; 733 734 quirk_vt82c586_acpi(dev); 735 736 pci_read_config_word(dev, 0x70, &hm); 737 hm &= PCI_BASE_ADDRESS_IO_MASK; 738 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon"); 739 740 pci_read_config_dword(dev, 0x90, &smb); 741 smb &= PCI_BASE_ADDRESS_IO_MASK; 742 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB"); 743 } 744 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi); 745 746 /* 747 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at 748 * 0x88 (128 bytes of power management registers) 749 * 0xd0 (16 bytes of SMB registers) 750 */ 751 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev) 752 { 753 u16 pm, smb; 754 755 pci_read_config_word(dev, 0x88, &pm); 756 pm &= PCI_BASE_ADDRESS_IO_MASK; 757 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM"); 758 759 pci_read_config_word(dev, 0xd0, &smb); 760 smb &= PCI_BASE_ADDRESS_IO_MASK; 761 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB"); 762 } 763 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi); 764 765 /* 766 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back: 767 * Disable fast back-to-back on the secondary bus segment 768 */ 769 static void __devinit quirk_xio2000a(struct pci_dev *dev) 770 { 771 struct pci_dev *pdev; 772 u16 command; 773 774 dev_warn(&dev->dev, "TI XIO2000a quirk detected; " 775 "secondary bus fast back-to-back transfers disabled\n"); 776 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) { 777 pci_read_config_word(pdev, PCI_COMMAND, &command); 778 if (command & PCI_COMMAND_FAST_BACK) 779 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK); 780 } 781 } 782 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A, 783 quirk_xio2000a); 784 785 #ifdef CONFIG_X86_IO_APIC 786 787 #include <asm/io_apic.h> 788 789 /* 790 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip 791 * devices to the external APIC. 792 * 793 * TODO: When we have device-specific interrupt routers, 794 * this code will go away from quirks. 795 */ 796 static void quirk_via_ioapic(struct pci_dev *dev) 797 { 798 u8 tmp; 799 800 if (nr_ioapics < 1) 801 tmp = 0; /* nothing routed to external APIC */ 802 else 803 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */ 804 805 dev_info(&dev->dev, "%sbling VIA external APIC routing\n", 806 tmp == 0 ? "Disa" : "Ena"); 807 808 /* Offset 0x58: External APIC IRQ output control */ 809 pci_write_config_byte (dev, 0x58, tmp); 810 } 811 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 812 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 813 814 /* 815 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit. 816 * This leads to doubled level interrupt rates. 817 * Set this bit to get rid of cycle wastage. 818 * Otherwise uncritical. 819 */ 820 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev) 821 { 822 u8 misc_control2; 823 #define BYPASS_APIC_DEASSERT 8 824 825 pci_read_config_byte(dev, 0x5B, &misc_control2); 826 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) { 827 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n"); 828 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT); 829 } 830 } 831 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 832 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 833 834 /* 835 * The AMD io apic can hang the box when an apic irq is masked. 836 * We check all revs >= B0 (yet not in the pre production!) as the bug 837 * is currently marked NoFix 838 * 839 * We have multiple reports of hangs with this chipset that went away with 840 * noapic specified. For the moment we assume it's the erratum. We may be wrong 841 * of course. However the advice is demonstrably good even if so.. 842 */ 843 static void __devinit quirk_amd_ioapic(struct pci_dev *dev) 844 { 845 if (dev->revision >= 0x02) { 846 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n"); 847 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n"); 848 } 849 } 850 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic); 851 852 static void __init quirk_ioapic_rmw(struct pci_dev *dev) 853 { 854 if (dev->devfn == 0 && dev->bus->number == 0) 855 sis_apic_bug = 1; 856 } 857 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw); 858 #endif /* CONFIG_X86_IO_APIC */ 859 860 /* 861 * Some settings of MMRBC can lead to data corruption so block changes. 862 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide 863 */ 864 static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev) 865 { 866 if (dev->subordinate && dev->revision <= 0x12) { 867 dev_info(&dev->dev, "AMD8131 rev %x detected; " 868 "disabling PCI-X MMRBC\n", dev->revision); 869 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC; 870 } 871 } 872 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc); 873 874 /* 875 * FIXME: it is questionable that quirk_via_acpi 876 * is needed. It shows up as an ISA bridge, and does not 877 * support the PCI_INTERRUPT_LINE register at all. Therefore 878 * it seems like setting the pci_dev's 'irq' to the 879 * value of the ACPI SCI interrupt is only done for convenience. 880 * -jgarzik 881 */ 882 static void __devinit quirk_via_acpi(struct pci_dev *d) 883 { 884 /* 885 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42 886 */ 887 u8 irq; 888 pci_read_config_byte(d, 0x42, &irq); 889 irq &= 0xf; 890 if (irq && (irq != 2)) 891 d->irq = irq; 892 } 893 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi); 894 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi); 895 896 897 /* 898 * VIA bridges which have VLink 899 */ 900 901 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18; 902 903 static void quirk_via_bridge(struct pci_dev *dev) 904 { 905 /* See what bridge we have and find the device ranges */ 906 switch (dev->device) { 907 case PCI_DEVICE_ID_VIA_82C686: 908 /* The VT82C686 is special, it attaches to PCI and can have 909 any device number. All its subdevices are functions of 910 that single device. */ 911 via_vlink_dev_lo = PCI_SLOT(dev->devfn); 912 via_vlink_dev_hi = PCI_SLOT(dev->devfn); 913 break; 914 case PCI_DEVICE_ID_VIA_8237: 915 case PCI_DEVICE_ID_VIA_8237A: 916 via_vlink_dev_lo = 15; 917 break; 918 case PCI_DEVICE_ID_VIA_8235: 919 via_vlink_dev_lo = 16; 920 break; 921 case PCI_DEVICE_ID_VIA_8231: 922 case PCI_DEVICE_ID_VIA_8233_0: 923 case PCI_DEVICE_ID_VIA_8233A: 924 case PCI_DEVICE_ID_VIA_8233C_0: 925 via_vlink_dev_lo = 17; 926 break; 927 } 928 } 929 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge); 930 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge); 931 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge); 932 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge); 933 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge); 934 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge); 935 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge); 936 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge); 937 938 /** 939 * quirk_via_vlink - VIA VLink IRQ number update 940 * @dev: PCI device 941 * 942 * If the device we are dealing with is on a PIC IRQ we need to 943 * ensure that the IRQ line register which usually is not relevant 944 * for PCI cards, is actually written so that interrupts get sent 945 * to the right place. 946 * We only do this on systems where a VIA south bridge was detected, 947 * and only for VIA devices on the motherboard (see quirk_via_bridge 948 * above). 949 */ 950 951 static void quirk_via_vlink(struct pci_dev *dev) 952 { 953 u8 irq, new_irq; 954 955 /* Check if we have VLink at all */ 956 if (via_vlink_dev_lo == -1) 957 return; 958 959 new_irq = dev->irq; 960 961 /* Don't quirk interrupts outside the legacy IRQ range */ 962 if (!new_irq || new_irq > 15) 963 return; 964 965 /* Internal device ? */ 966 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi || 967 PCI_SLOT(dev->devfn) < via_vlink_dev_lo) 968 return; 969 970 /* This is an internal VLink device on a PIC interrupt. The BIOS 971 ought to have set this but may not have, so we redo it */ 972 973 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); 974 if (new_irq != irq) { 975 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n", 976 irq, new_irq); 977 udelay(15); /* unknown if delay really needed */ 978 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); 979 } 980 } 981 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink); 982 983 /* 984 * VIA VT82C598 has its device ID settable and many BIOSes 985 * set it to the ID of VT82C597 for backward compatibility. 986 * We need to switch it off to be able to recognize the real 987 * type of the chip. 988 */ 989 static void __devinit quirk_vt82c598_id(struct pci_dev *dev) 990 { 991 pci_write_config_byte(dev, 0xfc, 0); 992 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device); 993 } 994 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id); 995 996 /* 997 * CardBus controllers have a legacy base address that enables them 998 * to respond as i82365 pcmcia controllers. We don't want them to 999 * do this even if the Linux CardBus driver is not loaded, because 1000 * the Linux i82365 driver does not (and should not) handle CardBus. 1001 */ 1002 static void quirk_cardbus_legacy(struct pci_dev *dev) 1003 { 1004 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class) 1005 return; 1006 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0); 1007 } 1008 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy); 1009 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy); 1010 1011 /* 1012 * Following the PCI ordering rules is optional on the AMD762. I'm not 1013 * sure what the designers were smoking but let's not inhale... 1014 * 1015 * To be fair to AMD, it follows the spec by default, its BIOS people 1016 * who turn it off! 1017 */ 1018 static void quirk_amd_ordering(struct pci_dev *dev) 1019 { 1020 u32 pcic; 1021 pci_read_config_dword(dev, 0x4C, &pcic); 1022 if ((pcic&6)!=6) { 1023 pcic |= 6; 1024 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n"); 1025 pci_write_config_dword(dev, 0x4C, pcic); 1026 pci_read_config_dword(dev, 0x84, &pcic); 1027 pcic |= (1<<23); /* Required in this mode */ 1028 pci_write_config_dword(dev, 0x84, pcic); 1029 } 1030 } 1031 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 1032 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 1033 1034 /* 1035 * DreamWorks provided workaround for Dunord I-3000 problem 1036 * 1037 * This card decodes and responds to addresses not apparently 1038 * assigned to it. We force a larger allocation to ensure that 1039 * nothing gets put too close to it. 1040 */ 1041 static void __devinit quirk_dunord ( struct pci_dev * dev ) 1042 { 1043 struct resource *r = &dev->resource [1]; 1044 r->start = 0; 1045 r->end = 0xffffff; 1046 } 1047 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord); 1048 1049 /* 1050 * i82380FB mobile docking controller: its PCI-to-PCI bridge 1051 * is subtractive decoding (transparent), and does indicate this 1052 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80 1053 * instead of 0x01. 1054 */ 1055 static void __devinit quirk_transparent_bridge(struct pci_dev *dev) 1056 { 1057 dev->transparent = 1; 1058 } 1059 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge); 1060 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge); 1061 1062 /* 1063 * Common misconfiguration of the MediaGX/Geode PCI master that will 1064 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 1065 * datasheets found at http://www.national.com/analog for info on what 1066 * these bits do. <christer@weinigel.se> 1067 */ 1068 static void quirk_mediagx_master(struct pci_dev *dev) 1069 { 1070 u8 reg; 1071 pci_read_config_byte(dev, 0x41, ®); 1072 if (reg & 2) { 1073 reg &= ~2; 1074 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg); 1075 pci_write_config_byte(dev, 0x41, reg); 1076 } 1077 } 1078 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 1079 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 1080 1081 /* 1082 * Ensure C0 rev restreaming is off. This is normally done by 1083 * the BIOS but in the odd case it is not the results are corruption 1084 * hence the presence of a Linux check 1085 */ 1086 static void quirk_disable_pxb(struct pci_dev *pdev) 1087 { 1088 u16 config; 1089 1090 if (pdev->revision != 0x04) /* Only C0 requires this */ 1091 return; 1092 pci_read_config_word(pdev, 0x40, &config); 1093 if (config & (1<<6)) { 1094 config &= ~(1<<6); 1095 pci_write_config_word(pdev, 0x40, config); 1096 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n"); 1097 } 1098 } 1099 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 1100 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 1101 1102 static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev) 1103 { 1104 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */ 1105 u8 tmp; 1106 1107 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp); 1108 if (tmp == 0x01) { 1109 pci_read_config_byte(pdev, 0x40, &tmp); 1110 pci_write_config_byte(pdev, 0x40, tmp|1); 1111 pci_write_config_byte(pdev, 0x9, 1); 1112 pci_write_config_byte(pdev, 0xa, 6); 1113 pci_write_config_byte(pdev, 0x40, tmp); 1114 1115 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI; 1116 dev_info(&pdev->dev, "set SATA to AHCI mode\n"); 1117 } 1118 } 1119 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1120 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1121 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1122 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1123 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); 1124 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); 1125 1126 /* 1127 * Serverworks CSB5 IDE does not fully support native mode 1128 */ 1129 static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev) 1130 { 1131 u8 prog; 1132 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1133 if (prog & 5) { 1134 prog &= ~5; 1135 pdev->class &= ~5; 1136 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1137 /* PCI layer will sort out resources */ 1138 } 1139 } 1140 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide); 1141 1142 /* 1143 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same 1144 */ 1145 static void __init quirk_ide_samemode(struct pci_dev *pdev) 1146 { 1147 u8 prog; 1148 1149 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1150 1151 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) { 1152 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n"); 1153 prog &= ~5; 1154 pdev->class &= ~5; 1155 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1156 } 1157 } 1158 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode); 1159 1160 /* 1161 * Some ATA devices break if put into D3 1162 */ 1163 1164 static void __devinit quirk_no_ata_d3(struct pci_dev *pdev) 1165 { 1166 /* Quirk the legacy ATA devices only. The AHCI ones are ok */ 1167 if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) 1168 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3; 1169 } 1170 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, quirk_no_ata_d3); 1171 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_no_ata_d3); 1172 /* ALi loses some register settings that we cannot then restore */ 1173 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, quirk_no_ata_d3); 1174 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures 1175 occur when mode detecting */ 1176 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_no_ata_d3); 1177 1178 /* This was originally an Alpha specific thing, but it really fits here. 1179 * The i82375 PCI/EISA bridge appears as non-classified. Fix that. 1180 */ 1181 static void __init quirk_eisa_bridge(struct pci_dev *dev) 1182 { 1183 dev->class = PCI_CLASS_BRIDGE_EISA << 8; 1184 } 1185 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge); 1186 1187 1188 /* 1189 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge 1190 * is not activated. The myth is that Asus said that they do not want the 1191 * users to be irritated by just another PCI Device in the Win98 device 1192 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors 1193 * package 2.7.0 for details) 1194 * 1195 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC 1196 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it 1197 * becomes necessary to do this tweak in two steps -- the chosen trigger 1198 * is either the Host bridge (preferred) or on-board VGA controller. 1199 * 1200 * Note that we used to unhide the SMBus that way on Toshiba laptops 1201 * (Satellite A40 and Tecra M2) but then found that the thermal management 1202 * was done by SMM code, which could cause unsynchronized concurrent 1203 * accesses to the SMBus registers, with potentially bad effects. Thus you 1204 * should be very careful when adding new entries: if SMM is accessing the 1205 * Intel SMBus, this is a very good reason to leave it hidden. 1206 * 1207 * Likewise, many recent laptops use ACPI for thermal management. If the 1208 * ACPI DSDT code accesses the SMBus, then Linux should not access it 1209 * natively, and keeping the SMBus hidden is the right thing to do. If you 1210 * are about to add an entry in the table below, please first disassemble 1211 * the DSDT and double-check that there is no code accessing the SMBus. 1212 */ 1213 static int asus_hides_smbus; 1214 1215 static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev) 1216 { 1217 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1218 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB) 1219 switch(dev->subsystem_device) { 1220 case 0x8025: /* P4B-LX */ 1221 case 0x8070: /* P4B */ 1222 case 0x8088: /* P4B533 */ 1223 case 0x1626: /* L3C notebook */ 1224 asus_hides_smbus = 1; 1225 } 1226 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) 1227 switch(dev->subsystem_device) { 1228 case 0x80b1: /* P4GE-V */ 1229 case 0x80b2: /* P4PE */ 1230 case 0x8093: /* P4B533-V */ 1231 asus_hides_smbus = 1; 1232 } 1233 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB) 1234 switch(dev->subsystem_device) { 1235 case 0x8030: /* P4T533 */ 1236 asus_hides_smbus = 1; 1237 } 1238 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0) 1239 switch (dev->subsystem_device) { 1240 case 0x8070: /* P4G8X Deluxe */ 1241 asus_hides_smbus = 1; 1242 } 1243 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH) 1244 switch (dev->subsystem_device) { 1245 case 0x80c9: /* PU-DLS */ 1246 asus_hides_smbus = 1; 1247 } 1248 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB) 1249 switch (dev->subsystem_device) { 1250 case 0x1751: /* M2N notebook */ 1251 case 0x1821: /* M5N notebook */ 1252 case 0x1897: /* A6L notebook */ 1253 asus_hides_smbus = 1; 1254 } 1255 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1256 switch (dev->subsystem_device) { 1257 case 0x184b: /* W1N notebook */ 1258 case 0x186a: /* M6Ne notebook */ 1259 asus_hides_smbus = 1; 1260 } 1261 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1262 switch (dev->subsystem_device) { 1263 case 0x80f2: /* P4P800-X */ 1264 asus_hides_smbus = 1; 1265 } 1266 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) 1267 switch (dev->subsystem_device) { 1268 case 0x1882: /* M6V notebook */ 1269 case 0x1977: /* A6VA notebook */ 1270 asus_hides_smbus = 1; 1271 } 1272 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) { 1273 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1274 switch(dev->subsystem_device) { 1275 case 0x088C: /* HP Compaq nc8000 */ 1276 case 0x0890: /* HP Compaq nc6000 */ 1277 asus_hides_smbus = 1; 1278 } 1279 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1280 switch (dev->subsystem_device) { 1281 case 0x12bc: /* HP D330L */ 1282 case 0x12bd: /* HP D530 */ 1283 case 0x006a: /* HP Compaq nx9500 */ 1284 asus_hides_smbus = 1; 1285 } 1286 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB) 1287 switch (dev->subsystem_device) { 1288 case 0x12bf: /* HP xw4100 */ 1289 asus_hides_smbus = 1; 1290 } 1291 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) { 1292 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1293 switch(dev->subsystem_device) { 1294 case 0xC00C: /* Samsung P35 notebook */ 1295 asus_hides_smbus = 1; 1296 } 1297 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) { 1298 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1299 switch(dev->subsystem_device) { 1300 case 0x0058: /* Compaq Evo N620c */ 1301 asus_hides_smbus = 1; 1302 } 1303 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3) 1304 switch(dev->subsystem_device) { 1305 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */ 1306 /* Motherboard doesn't have Host bridge 1307 * subvendor/subdevice IDs, therefore checking 1308 * its on-board VGA controller */ 1309 asus_hides_smbus = 1; 1310 } 1311 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2) 1312 switch(dev->subsystem_device) { 1313 case 0x00b8: /* Compaq Evo D510 CMT */ 1314 case 0x00b9: /* Compaq Evo D510 SFF */ 1315 case 0x00ba: /* Compaq Evo D510 USDT */ 1316 /* Motherboard doesn't have Host bridge 1317 * subvendor/subdevice IDs and on-board VGA 1318 * controller is disabled if an AGP card is 1319 * inserted, therefore checking USB UHCI 1320 * Controller #1 */ 1321 asus_hides_smbus = 1; 1322 } 1323 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC) 1324 switch (dev->subsystem_device) { 1325 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */ 1326 /* Motherboard doesn't have host bridge 1327 * subvendor/subdevice IDs, therefore checking 1328 * its on-board VGA controller */ 1329 asus_hides_smbus = 1; 1330 } 1331 } 1332 } 1333 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge); 1334 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge); 1335 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge); 1336 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge); 1337 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge); 1338 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge); 1339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge); 1340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge); 1341 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge); 1342 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge); 1343 1344 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge); 1345 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge); 1346 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge); 1347 1348 static void asus_hides_smbus_lpc(struct pci_dev *dev) 1349 { 1350 u16 val; 1351 1352 if (likely(!asus_hides_smbus)) 1353 return; 1354 1355 pci_read_config_word(dev, 0xF2, &val); 1356 if (val & 0x8) { 1357 pci_write_config_word(dev, 0xF2, val & (~0x8)); 1358 pci_read_config_word(dev, 0xF2, &val); 1359 if (val & 0x8) 1360 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val); 1361 else 1362 dev_info(&dev->dev, "Enabled i801 SMBus device\n"); 1363 } 1364 } 1365 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1367 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1368 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1369 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1370 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1371 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1372 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1373 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1374 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1375 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1376 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1377 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1378 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1379 1380 /* It appears we just have one such device. If not, we have a warning */ 1381 static void __iomem *asus_rcba_base; 1382 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev) 1383 { 1384 u32 rcba; 1385 1386 if (likely(!asus_hides_smbus)) 1387 return; 1388 WARN_ON(asus_rcba_base); 1389 1390 pci_read_config_dword(dev, 0xF0, &rcba); 1391 /* use bits 31:14, 16 kB aligned */ 1392 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); 1393 if (asus_rcba_base == NULL) 1394 return; 1395 } 1396 1397 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev) 1398 { 1399 u32 val; 1400 1401 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1402 return; 1403 /* read the Function Disable register, dword mode only */ 1404 val = readl(asus_rcba_base + 0x3418); 1405 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */ 1406 } 1407 1408 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev) 1409 { 1410 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1411 return; 1412 iounmap(asus_rcba_base); 1413 asus_rcba_base = NULL; 1414 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n"); 1415 } 1416 1417 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev) 1418 { 1419 asus_hides_smbus_lpc_ich6_suspend(dev); 1420 asus_hides_smbus_lpc_ich6_resume_early(dev); 1421 asus_hides_smbus_lpc_ich6_resume(dev); 1422 } 1423 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6); 1424 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend); 1425 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume); 1426 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early); 1427 1428 /* 1429 * SiS 96x south bridge: BIOS typically hides SMBus device... 1430 */ 1431 static void quirk_sis_96x_smbus(struct pci_dev *dev) 1432 { 1433 u8 val = 0; 1434 pci_read_config_byte(dev, 0x77, &val); 1435 if (val & 0x10) { 1436 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n"); 1437 pci_write_config_byte(dev, 0x77, val & ~0x10); 1438 } 1439 } 1440 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1441 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1442 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1443 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1444 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1445 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1446 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1447 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1448 1449 /* 1450 * ... This is further complicated by the fact that some SiS96x south 1451 * bridges pretend to be 85C503/5513 instead. In that case see if we 1452 * spotted a compatible north bridge to make sure. 1453 * (pci_find_device doesn't work yet) 1454 * 1455 * We can also enable the sis96x bit in the discovery register.. 1456 */ 1457 #define SIS_DETECT_REGISTER 0x40 1458 1459 static void quirk_sis_503(struct pci_dev *dev) 1460 { 1461 u8 reg; 1462 u16 devid; 1463 1464 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®); 1465 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6)); 1466 pci_read_config_word(dev, PCI_DEVICE_ID, &devid); 1467 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) { 1468 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg); 1469 return; 1470 } 1471 1472 /* 1473 * Ok, it now shows up as a 96x.. run the 96x quirk by 1474 * hand in case it has already been processed. 1475 * (depends on link order, which is apparently not guaranteed) 1476 */ 1477 dev->device = devid; 1478 quirk_sis_96x_smbus(dev); 1479 } 1480 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1481 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1482 1483 1484 /* 1485 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller 1486 * and MC97 modem controller are disabled when a second PCI soundcard is 1487 * present. This patch, tweaking the VT8237 ISA bridge, enables them. 1488 * -- bjd 1489 */ 1490 static void asus_hides_ac97_lpc(struct pci_dev *dev) 1491 { 1492 u8 val; 1493 int asus_hides_ac97 = 0; 1494 1495 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1496 if (dev->device == PCI_DEVICE_ID_VIA_8237) 1497 asus_hides_ac97 = 1; 1498 } 1499 1500 if (!asus_hides_ac97) 1501 return; 1502 1503 pci_read_config_byte(dev, 0x50, &val); 1504 if (val & 0xc0) { 1505 pci_write_config_byte(dev, 0x50, val & (~0xc0)); 1506 pci_read_config_byte(dev, 0x50, &val); 1507 if (val & 0xc0) 1508 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val); 1509 else 1510 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n"); 1511 } 1512 } 1513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1514 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1515 1516 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) 1517 1518 /* 1519 * If we are using libata we can drive this chip properly but must 1520 * do this early on to make the additional device appear during 1521 * the PCI scanning. 1522 */ 1523 static void quirk_jmicron_ata(struct pci_dev *pdev) 1524 { 1525 u32 conf1, conf5, class; 1526 u8 hdr; 1527 1528 /* Only poke fn 0 */ 1529 if (PCI_FUNC(pdev->devfn)) 1530 return; 1531 1532 pci_read_config_dword(pdev, 0x40, &conf1); 1533 pci_read_config_dword(pdev, 0x80, &conf5); 1534 1535 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */ 1536 conf5 &= ~(1 << 24); /* Clear bit 24 */ 1537 1538 switch (pdev->device) { 1539 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */ 1540 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */ 1541 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */ 1542 /* The controller should be in single function ahci mode */ 1543 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */ 1544 break; 1545 1546 case PCI_DEVICE_ID_JMICRON_JMB365: 1547 case PCI_DEVICE_ID_JMICRON_JMB366: 1548 /* Redirect IDE second PATA port to the right spot */ 1549 conf5 |= (1 << 24); 1550 /* Fall through */ 1551 case PCI_DEVICE_ID_JMICRON_JMB361: 1552 case PCI_DEVICE_ID_JMICRON_JMB363: 1553 case PCI_DEVICE_ID_JMICRON_JMB369: 1554 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */ 1555 /* Set the class codes correctly and then direct IDE 0 */ 1556 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */ 1557 break; 1558 1559 case PCI_DEVICE_ID_JMICRON_JMB368: 1560 /* The controller should be in single function IDE mode */ 1561 conf1 |= 0x00C00000; /* Set 22, 23 */ 1562 break; 1563 } 1564 1565 pci_write_config_dword(pdev, 0x40, conf1); 1566 pci_write_config_dword(pdev, 0x80, conf5); 1567 1568 /* Update pdev accordingly */ 1569 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr); 1570 pdev->hdr_type = hdr & 0x7f; 1571 pdev->multifunction = !!(hdr & 0x80); 1572 1573 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class); 1574 pdev->class = class >> 8; 1575 } 1576 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1577 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1578 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata); 1579 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1580 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata); 1581 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1582 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1583 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1584 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata); 1585 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1586 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1587 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata); 1588 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1589 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata); 1590 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1591 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1592 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1593 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata); 1594 1595 #endif 1596 1597 #ifdef CONFIG_X86_IO_APIC 1598 static void __init quirk_alder_ioapic(struct pci_dev *pdev) 1599 { 1600 int i; 1601 1602 if ((pdev->class >> 8) != 0xff00) 1603 return; 1604 1605 /* the first BAR is the location of the IO APIC...we must 1606 * not touch this (and it's already covered by the fixmap), so 1607 * forcibly insert it into the resource tree */ 1608 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0)) 1609 insert_resource(&iomem_resource, &pdev->resource[0]); 1610 1611 /* The next five BARs all seem to be rubbish, so just clean 1612 * them out */ 1613 for (i=1; i < 6; i++) { 1614 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i])); 1615 } 1616 1617 } 1618 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic); 1619 #endif 1620 1621 static void __devinit quirk_pcie_mch(struct pci_dev *pdev) 1622 { 1623 pci_msi_off(pdev); 1624 pdev->no_msi = 1; 1625 } 1626 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch); 1627 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch); 1628 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch); 1629 1630 1631 /* 1632 * It's possible for the MSI to get corrupted if shpc and acpi 1633 * are used together on certain PXH-based systems. 1634 */ 1635 static void __devinit quirk_pcie_pxh(struct pci_dev *dev) 1636 { 1637 pci_msi_off(dev); 1638 dev->no_msi = 1; 1639 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n"); 1640 } 1641 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); 1642 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); 1643 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh); 1644 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh); 1645 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh); 1646 1647 /* 1648 * Some Intel PCI Express chipsets have trouble with downstream 1649 * device power management. 1650 */ 1651 static void quirk_intel_pcie_pm(struct pci_dev * dev) 1652 { 1653 pci_pm_d3_delay = 120; 1654 dev->no_d1d2 = 1; 1655 } 1656 1657 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm); 1658 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm); 1659 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm); 1660 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm); 1661 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm); 1662 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm); 1663 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm); 1664 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm); 1665 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm); 1666 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm); 1667 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm); 1668 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm); 1669 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm); 1670 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm); 1671 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm); 1672 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm); 1673 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm); 1674 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm); 1675 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm); 1676 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm); 1677 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm); 1678 1679 #ifdef CONFIG_X86_IO_APIC 1680 /* 1681 * Boot interrupts on some chipsets cannot be turned off. For these chipsets, 1682 * remap the original interrupt in the linux kernel to the boot interrupt, so 1683 * that a PCI device's interrupt handler is installed on the boot interrupt 1684 * line instead. 1685 */ 1686 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev) 1687 { 1688 if (noioapicquirk || noioapicreroute) 1689 return; 1690 1691 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT; 1692 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n", 1693 dev->vendor, dev->device); 1694 } 1695 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 1696 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 1697 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 1698 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 1699 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 1700 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 1701 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 1702 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 1703 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 1704 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 1705 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 1706 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 1707 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 1708 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 1709 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 1710 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 1711 1712 /* 1713 * On some chipsets we can disable the generation of legacy INTx boot 1714 * interrupts. 1715 */ 1716 1717 /* 1718 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no 1719 * 300641-004US, section 5.7.3. 1720 */ 1721 #define INTEL_6300_IOAPIC_ABAR 0x40 1722 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14) 1723 1724 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev) 1725 { 1726 u16 pci_config_word; 1727 1728 if (noioapicquirk) 1729 return; 1730 1731 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word); 1732 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ; 1733 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word); 1734 1735 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1736 dev->vendor, dev->device); 1737 } 1738 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); 1739 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); 1740 1741 /* 1742 * disable boot interrupts on HT-1000 1743 */ 1744 #define BC_HT1000_FEATURE_REG 0x64 1745 #define BC_HT1000_PIC_REGS_ENABLE (1<<0) 1746 #define BC_HT1000_MAP_IDX 0xC00 1747 #define BC_HT1000_MAP_DATA 0xC01 1748 1749 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev) 1750 { 1751 u32 pci_config_dword; 1752 u8 irq; 1753 1754 if (noioapicquirk) 1755 return; 1756 1757 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword); 1758 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword | 1759 BC_HT1000_PIC_REGS_ENABLE); 1760 1761 for (irq = 0x10; irq < 0x10 + 32; irq++) { 1762 outb(irq, BC_HT1000_MAP_IDX); 1763 outb(0x00, BC_HT1000_MAP_DATA); 1764 } 1765 1766 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword); 1767 1768 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1769 dev->vendor, dev->device); 1770 } 1771 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 1772 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 1773 1774 /* 1775 * disable boot interrupts on AMD and ATI chipsets 1776 */ 1777 /* 1778 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131 1779 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode 1780 * (due to an erratum). 1781 */ 1782 #define AMD_813X_MISC 0x40 1783 #define AMD_813X_NOIOAMODE (1<<0) 1784 #define AMD_813X_REV_B1 0x12 1785 #define AMD_813X_REV_B2 0x13 1786 1787 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev) 1788 { 1789 u32 pci_config_dword; 1790 1791 if (noioapicquirk) 1792 return; 1793 if ((dev->revision == AMD_813X_REV_B1) || 1794 (dev->revision == AMD_813X_REV_B2)) 1795 return; 1796 1797 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword); 1798 pci_config_dword &= ~AMD_813X_NOIOAMODE; 1799 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword); 1800 1801 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1802 dev->vendor, dev->device); 1803 } 1804 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1805 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1806 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1807 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1808 1809 #define AMD_8111_PCI_IRQ_ROUTING 0x56 1810 1811 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev) 1812 { 1813 u16 pci_config_word; 1814 1815 if (noioapicquirk) 1816 return; 1817 1818 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word); 1819 if (!pci_config_word) { 1820 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] " 1821 "already disabled\n", dev->vendor, dev->device); 1822 return; 1823 } 1824 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0); 1825 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1826 dev->vendor, dev->device); 1827 } 1828 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 1829 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 1830 #endif /* CONFIG_X86_IO_APIC */ 1831 1832 /* 1833 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size 1834 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes. 1835 * Re-allocate the region if needed... 1836 */ 1837 static void __init quirk_tc86c001_ide(struct pci_dev *dev) 1838 { 1839 struct resource *r = &dev->resource[0]; 1840 1841 if (r->start & 0x8) { 1842 r->start = 0; 1843 r->end = 0xf; 1844 } 1845 } 1846 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2, 1847 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE, 1848 quirk_tc86c001_ide); 1849 1850 static void __devinit quirk_netmos(struct pci_dev *dev) 1851 { 1852 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4; 1853 unsigned int num_serial = dev->subsystem_device & 0xf; 1854 1855 /* 1856 * These Netmos parts are multiport serial devices with optional 1857 * parallel ports. Even when parallel ports are present, they 1858 * are identified as class SERIAL, which means the serial driver 1859 * will claim them. To prevent this, mark them as class OTHER. 1860 * These combo devices should be claimed by parport_serial. 1861 * 1862 * The subdevice ID is of the form 0x00PS, where <P> is the number 1863 * of parallel ports and <S> is the number of serial ports. 1864 */ 1865 switch (dev->device) { 1866 case PCI_DEVICE_ID_NETMOS_9835: 1867 /* Well, this rule doesn't hold for the following 9835 device */ 1868 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM && 1869 dev->subsystem_device == 0x0299) 1870 return; 1871 case PCI_DEVICE_ID_NETMOS_9735: 1872 case PCI_DEVICE_ID_NETMOS_9745: 1873 case PCI_DEVICE_ID_NETMOS_9845: 1874 case PCI_DEVICE_ID_NETMOS_9855: 1875 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL && 1876 num_parallel) { 1877 dev_info(&dev->dev, "Netmos %04x (%u parallel, " 1878 "%u serial); changing class SERIAL to OTHER " 1879 "(use parport_serial)\n", 1880 dev->device, num_parallel, num_serial); 1881 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) | 1882 (dev->class & 0xff); 1883 } 1884 } 1885 } 1886 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos); 1887 1888 static void __devinit quirk_e100_interrupt(struct pci_dev *dev) 1889 { 1890 u16 command, pmcsr; 1891 u8 __iomem *csr; 1892 u8 cmd_hi; 1893 int pm; 1894 1895 switch (dev->device) { 1896 /* PCI IDs taken from drivers/net/e100.c */ 1897 case 0x1029: 1898 case 0x1030 ... 0x1034: 1899 case 0x1038 ... 0x103E: 1900 case 0x1050 ... 0x1057: 1901 case 0x1059: 1902 case 0x1064 ... 0x106B: 1903 case 0x1091 ... 0x1095: 1904 case 0x1209: 1905 case 0x1229: 1906 case 0x2449: 1907 case 0x2459: 1908 case 0x245D: 1909 case 0x27DC: 1910 break; 1911 default: 1912 return; 1913 } 1914 1915 /* 1916 * Some firmware hands off the e100 with interrupts enabled, 1917 * which can cause a flood of interrupts if packets are 1918 * received before the driver attaches to the device. So 1919 * disable all e100 interrupts here. The driver will 1920 * re-enable them when it's ready. 1921 */ 1922 pci_read_config_word(dev, PCI_COMMAND, &command); 1923 1924 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0)) 1925 return; 1926 1927 /* 1928 * Check that the device is in the D0 power state. If it's not, 1929 * there is no point to look any further. 1930 */ 1931 pm = pci_find_capability(dev, PCI_CAP_ID_PM); 1932 if (pm) { 1933 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr); 1934 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) 1935 return; 1936 } 1937 1938 /* Convert from PCI bus to resource space. */ 1939 csr = ioremap(pci_resource_start(dev, 0), 8); 1940 if (!csr) { 1941 dev_warn(&dev->dev, "Can't map e100 registers\n"); 1942 return; 1943 } 1944 1945 cmd_hi = readb(csr + 3); 1946 if (cmd_hi == 0) { 1947 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; " 1948 "disabling\n"); 1949 writeb(1, csr + 3); 1950 } 1951 1952 iounmap(csr); 1953 } 1954 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt); 1955 1956 /* 1957 * The 82575 and 82598 may experience data corruption issues when transitioning 1958 * out of L0S. To prevent this we need to disable L0S on the pci-e link 1959 */ 1960 static void __devinit quirk_disable_aspm_l0s(struct pci_dev *dev) 1961 { 1962 dev_info(&dev->dev, "Disabling L0s\n"); 1963 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S); 1964 } 1965 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s); 1966 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s); 1967 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s); 1968 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s); 1969 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s); 1970 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s); 1971 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s); 1972 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s); 1973 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s); 1974 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s); 1975 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s); 1976 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s); 1977 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s); 1978 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s); 1979 1980 static void __devinit fixup_rev1_53c810(struct pci_dev* dev) 1981 { 1982 /* rev 1 ncr53c810 chips don't set the class at all which means 1983 * they don't get their resources remapped. Fix that here. 1984 */ 1985 1986 if (dev->class == PCI_CLASS_NOT_DEFINED) { 1987 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n"); 1988 dev->class = PCI_CLASS_STORAGE_SCSI; 1989 } 1990 } 1991 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); 1992 1993 /* Enable 1k I/O space granularity on the Intel P64H2 */ 1994 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev) 1995 { 1996 u16 en1k; 1997 u8 io_base_lo, io_limit_lo; 1998 unsigned long base, limit; 1999 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES; 2000 2001 pci_read_config_word(dev, 0x40, &en1k); 2002 2003 if (en1k & 0x200) { 2004 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n"); 2005 2006 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo); 2007 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo); 2008 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; 2009 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; 2010 2011 if (base <= limit) { 2012 res->start = base; 2013 res->end = limit + 0x3ff; 2014 } 2015 } 2016 } 2017 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io); 2018 2019 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2 2020 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge() 2021 * in drivers/pci/setup-bus.c 2022 */ 2023 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev) 2024 { 2025 u16 en1k, iobl_adr, iobl_adr_1k; 2026 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES; 2027 2028 pci_read_config_word(dev, 0x40, &en1k); 2029 2030 if (en1k & 0x200) { 2031 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr); 2032 2033 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00); 2034 2035 if (iobl_adr != iobl_adr_1k) { 2036 dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n", 2037 iobl_adr,iobl_adr_1k); 2038 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k); 2039 } 2040 } 2041 } 2042 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl); 2043 2044 /* Under some circumstances, AER is not linked with extended capabilities. 2045 * Force it to be linked by setting the corresponding control bit in the 2046 * config space. 2047 */ 2048 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev) 2049 { 2050 uint8_t b; 2051 if (pci_read_config_byte(dev, 0xf41, &b) == 0) { 2052 if (!(b & 0x20)) { 2053 pci_write_config_byte(dev, 0xf41, b | 0x20); 2054 dev_info(&dev->dev, 2055 "Linking AER extended capability\n"); 2056 } 2057 } 2058 } 2059 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2060 quirk_nvidia_ck804_pcie_aer_ext_cap); 2061 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2062 quirk_nvidia_ck804_pcie_aer_ext_cap); 2063 2064 static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev) 2065 { 2066 /* 2067 * Disable PCI Bus Parking and PCI Master read caching on CX700 2068 * which causes unspecified timing errors with a VT6212L on the PCI 2069 * bus leading to USB2.0 packet loss. 2070 * 2071 * This quirk is only enabled if a second (on the external PCI bus) 2072 * VT6212L is found -- the CX700 core itself also contains a USB 2073 * host controller with the same PCI ID as the VT6212L. 2074 */ 2075 2076 /* Count VT6212L instances */ 2077 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA, 2078 PCI_DEVICE_ID_VIA_8235_USB_2, NULL); 2079 uint8_t b; 2080 2081 /* p should contain the first (internal) VT6212L -- see if we have 2082 an external one by searching again */ 2083 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p); 2084 if (!p) 2085 return; 2086 pci_dev_put(p); 2087 2088 if (pci_read_config_byte(dev, 0x76, &b) == 0) { 2089 if (b & 0x40) { 2090 /* Turn off PCI Bus Parking */ 2091 pci_write_config_byte(dev, 0x76, b ^ 0x40); 2092 2093 dev_info(&dev->dev, 2094 "Disabling VIA CX700 PCI parking\n"); 2095 } 2096 } 2097 2098 if (pci_read_config_byte(dev, 0x72, &b) == 0) { 2099 if (b != 0) { 2100 /* Turn off PCI Master read caching */ 2101 pci_write_config_byte(dev, 0x72, 0x0); 2102 2103 /* Set PCI Master Bus time-out to "1x16 PCLK" */ 2104 pci_write_config_byte(dev, 0x75, 0x1); 2105 2106 /* Disable "Read FIFO Timer" */ 2107 pci_write_config_byte(dev, 0x77, 0x0); 2108 2109 dev_info(&dev->dev, 2110 "Disabling VIA CX700 PCI caching\n"); 2111 } 2112 } 2113 } 2114 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching); 2115 2116 /* 2117 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the 2118 * VPD end tag will hang the device. This problem was initially 2119 * observed when a vpd entry was created in sysfs 2120 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry 2121 * will dump 32k of data. Reading a full 32k will cause an access 2122 * beyond the VPD end tag causing the device to hang. Once the device 2123 * is hung, the bnx2 driver will not be able to reset the device. 2124 * We believe that it is legal to read beyond the end tag and 2125 * therefore the solution is to limit the read/write length. 2126 */ 2127 static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev) 2128 { 2129 /* 2130 * Only disable the VPD capability for 5706, 5706S, 5708, 2131 * 5708S and 5709 rev. A 2132 */ 2133 if ((dev->device == PCI_DEVICE_ID_NX2_5706) || 2134 (dev->device == PCI_DEVICE_ID_NX2_5706S) || 2135 (dev->device == PCI_DEVICE_ID_NX2_5708) || 2136 (dev->device == PCI_DEVICE_ID_NX2_5708S) || 2137 ((dev->device == PCI_DEVICE_ID_NX2_5709) && 2138 (dev->revision & 0xf0) == 0x0)) { 2139 if (dev->vpd) 2140 dev->vpd->len = 0x80; 2141 } 2142 } 2143 2144 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2145 PCI_DEVICE_ID_NX2_5706, 2146 quirk_brcm_570x_limit_vpd); 2147 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2148 PCI_DEVICE_ID_NX2_5706S, 2149 quirk_brcm_570x_limit_vpd); 2150 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2151 PCI_DEVICE_ID_NX2_5708, 2152 quirk_brcm_570x_limit_vpd); 2153 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2154 PCI_DEVICE_ID_NX2_5708S, 2155 quirk_brcm_570x_limit_vpd); 2156 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2157 PCI_DEVICE_ID_NX2_5709, 2158 quirk_brcm_570x_limit_vpd); 2159 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2160 PCI_DEVICE_ID_NX2_5709S, 2161 quirk_brcm_570x_limit_vpd); 2162 2163 /* Originally in EDAC sources for i82875P: 2164 * Intel tells BIOS developers to hide device 6 which 2165 * configures the overflow device access containing 2166 * the DRBs - this is where we expose device 6. 2167 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm 2168 */ 2169 static void __devinit quirk_unhide_mch_dev6(struct pci_dev *dev) 2170 { 2171 u8 reg; 2172 2173 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) { 2174 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n"); 2175 pci_write_config_byte(dev, 0xF4, reg | 0x02); 2176 } 2177 } 2178 2179 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, 2180 quirk_unhide_mch_dev6); 2181 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, 2182 quirk_unhide_mch_dev6); 2183 2184 #ifdef CONFIG_TILE 2185 /* 2186 * The Tilera TILEmpower platform needs to set the link speed 2187 * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed 2188 * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe 2189 * capability register of the PEX8624 PCIe switch. The switch 2190 * supports link speed auto negotiation, but falsely sets 2191 * the link speed to 5GT/s. 2192 */ 2193 static void __devinit quirk_tile_plx_gen1(struct pci_dev *dev) 2194 { 2195 if (tile_plx_gen1) { 2196 pci_write_config_dword(dev, 0x98, 0x1); 2197 mdelay(50); 2198 } 2199 } 2200 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1); 2201 #endif /* CONFIG_TILE */ 2202 2203 #ifdef CONFIG_PCI_MSI 2204 /* Some chipsets do not support MSI. We cannot easily rely on setting 2205 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually 2206 * some other busses controlled by the chipset even if Linux is not 2207 * aware of it. Instead of setting the flag on all busses in the 2208 * machine, simply disable MSI globally. 2209 */ 2210 static void __init quirk_disable_all_msi(struct pci_dev *dev) 2211 { 2212 pci_no_msi(); 2213 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n"); 2214 } 2215 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi); 2216 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi); 2217 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi); 2218 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi); 2219 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi); 2220 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); 2221 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi); 2222 2223 /* Disable MSI on chipsets that are known to not support it */ 2224 static void __devinit quirk_disable_msi(struct pci_dev *dev) 2225 { 2226 if (dev->subordinate) { 2227 dev_warn(&dev->dev, "MSI quirk detected; " 2228 "subordinate MSI disabled\n"); 2229 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2230 } 2231 } 2232 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); 2233 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi); 2234 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi); 2235 2236 /* 2237 * The APC bridge device in AMD 780 family northbridges has some random 2238 * OEM subsystem ID in its vendor ID register (erratum 18), so instead 2239 * we use the possible vendor/device IDs of the host bridge for the 2240 * declared quirk, and search for the APC bridge by slot number. 2241 */ 2242 static void __devinit quirk_amd_780_apc_msi(struct pci_dev *host_bridge) 2243 { 2244 struct pci_dev *apc_bridge; 2245 2246 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0)); 2247 if (apc_bridge) { 2248 if (apc_bridge->device == 0x9602) 2249 quirk_disable_msi(apc_bridge); 2250 pci_dev_put(apc_bridge); 2251 } 2252 } 2253 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi); 2254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi); 2255 2256 /* Go through the list of Hypertransport capabilities and 2257 * return 1 if a HT MSI capability is found and enabled */ 2258 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev) 2259 { 2260 int pos, ttl = 48; 2261 2262 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2263 while (pos && ttl--) { 2264 u8 flags; 2265 2266 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2267 &flags) == 0) 2268 { 2269 dev_info(&dev->dev, "Found %s HT MSI Mapping\n", 2270 flags & HT_MSI_FLAGS_ENABLE ? 2271 "enabled" : "disabled"); 2272 return (flags & HT_MSI_FLAGS_ENABLE) != 0; 2273 } 2274 2275 pos = pci_find_next_ht_capability(dev, pos, 2276 HT_CAPTYPE_MSI_MAPPING); 2277 } 2278 return 0; 2279 } 2280 2281 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */ 2282 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev) 2283 { 2284 if (dev->subordinate && !msi_ht_cap_enabled(dev)) { 2285 dev_warn(&dev->dev, "MSI quirk detected; " 2286 "subordinate MSI disabled\n"); 2287 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2288 } 2289 } 2290 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE, 2291 quirk_msi_ht_cap); 2292 2293 /* The nVidia CK804 chipset may have 2 HT MSI mappings. 2294 * MSI are supported if the MSI capability set in any of these mappings. 2295 */ 2296 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev) 2297 { 2298 struct pci_dev *pdev; 2299 2300 if (!dev->subordinate) 2301 return; 2302 2303 /* check HT MSI cap on this chipset and the root one. 2304 * a single one having MSI is enough to be sure that MSI are supported. 2305 */ 2306 pdev = pci_get_slot(dev->bus, 0); 2307 if (!pdev) 2308 return; 2309 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) { 2310 dev_warn(&dev->dev, "MSI quirk detected; " 2311 "subordinate MSI disabled\n"); 2312 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2313 } 2314 pci_dev_put(pdev); 2315 } 2316 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2317 quirk_nvidia_ck804_msi_ht_cap); 2318 2319 /* Force enable MSI mapping capability on HT bridges */ 2320 static void __devinit ht_enable_msi_mapping(struct pci_dev *dev) 2321 { 2322 int pos, ttl = 48; 2323 2324 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2325 while (pos && ttl--) { 2326 u8 flags; 2327 2328 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2329 &flags) == 0) { 2330 dev_info(&dev->dev, "Enabling HT MSI Mapping\n"); 2331 2332 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2333 flags | HT_MSI_FLAGS_ENABLE); 2334 } 2335 pos = pci_find_next_ht_capability(dev, pos, 2336 HT_CAPTYPE_MSI_MAPPING); 2337 } 2338 } 2339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, 2340 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB, 2341 ht_enable_msi_mapping); 2342 2343 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, 2344 ht_enable_msi_mapping); 2345 2346 /* The P5N32-SLI motherboards from Asus have a problem with msi 2347 * for the MCP55 NIC. It is not yet determined whether the msi problem 2348 * also affects other devices. As for now, turn off msi for this device. 2349 */ 2350 static void __devinit nvenet_msi_disable(struct pci_dev *dev) 2351 { 2352 if (dmi_name_in_vendors("P5N32-SLI PREMIUM") || 2353 dmi_name_in_vendors("P5N32-E SLI")) { 2354 dev_info(&dev->dev, 2355 "Disabling msi for MCP55 NIC on P5N32-SLI\n"); 2356 dev->no_msi = 1; 2357 } 2358 } 2359 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2360 PCI_DEVICE_ID_NVIDIA_NVENET_15, 2361 nvenet_msi_disable); 2362 2363 /* 2364 * Some versions of the MCP55 bridge from nvidia have a legacy irq routing 2365 * config register. This register controls the routing of legacy interrupts 2366 * from devices that route through the MCP55. If this register is misprogramed 2367 * interrupts are only sent to the bsp, unlike conventional systems where the 2368 * irq is broadxast to all online cpus. Not having this register set 2369 * properly prevents kdump from booting up properly, so lets make sure that 2370 * we have it set correctly. 2371 * Note this is an undocumented register. 2372 */ 2373 static void __devinit nvbridge_check_legacy_irq_routing(struct pci_dev *dev) 2374 { 2375 u32 cfg; 2376 2377 if (!pci_find_capability(dev, PCI_CAP_ID_HT)) 2378 return; 2379 2380 pci_read_config_dword(dev, 0x74, &cfg); 2381 2382 if (cfg & ((1 << 2) | (1 << 15))) { 2383 printk(KERN_INFO "Rewriting irq routing register on MCP55\n"); 2384 cfg &= ~((1 << 2) | (1 << 15)); 2385 pci_write_config_dword(dev, 0x74, cfg); 2386 } 2387 } 2388 2389 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2390 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0, 2391 nvbridge_check_legacy_irq_routing); 2392 2393 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2394 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4, 2395 nvbridge_check_legacy_irq_routing); 2396 2397 static int __devinit ht_check_msi_mapping(struct pci_dev *dev) 2398 { 2399 int pos, ttl = 48; 2400 int found = 0; 2401 2402 /* check if there is HT MSI cap or enabled on this device */ 2403 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2404 while (pos && ttl--) { 2405 u8 flags; 2406 2407 if (found < 1) 2408 found = 1; 2409 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2410 &flags) == 0) { 2411 if (flags & HT_MSI_FLAGS_ENABLE) { 2412 if (found < 2) { 2413 found = 2; 2414 break; 2415 } 2416 } 2417 } 2418 pos = pci_find_next_ht_capability(dev, pos, 2419 HT_CAPTYPE_MSI_MAPPING); 2420 } 2421 2422 return found; 2423 } 2424 2425 static int __devinit host_bridge_with_leaf(struct pci_dev *host_bridge) 2426 { 2427 struct pci_dev *dev; 2428 int pos; 2429 int i, dev_no; 2430 int found = 0; 2431 2432 dev_no = host_bridge->devfn >> 3; 2433 for (i = dev_no + 1; i < 0x20; i++) { 2434 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0)); 2435 if (!dev) 2436 continue; 2437 2438 /* found next host bridge ?*/ 2439 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2440 if (pos != 0) { 2441 pci_dev_put(dev); 2442 break; 2443 } 2444 2445 if (ht_check_msi_mapping(dev)) { 2446 found = 1; 2447 pci_dev_put(dev); 2448 break; 2449 } 2450 pci_dev_put(dev); 2451 } 2452 2453 return found; 2454 } 2455 2456 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */ 2457 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */ 2458 2459 static int __devinit is_end_of_ht_chain(struct pci_dev *dev) 2460 { 2461 int pos, ctrl_off; 2462 int end = 0; 2463 u16 flags, ctrl; 2464 2465 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2466 2467 if (!pos) 2468 goto out; 2469 2470 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags); 2471 2472 ctrl_off = ((flags >> 10) & 1) ? 2473 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1; 2474 pci_read_config_word(dev, pos + ctrl_off, &ctrl); 2475 2476 if (ctrl & (1 << 6)) 2477 end = 1; 2478 2479 out: 2480 return end; 2481 } 2482 2483 static void __devinit nv_ht_enable_msi_mapping(struct pci_dev *dev) 2484 { 2485 struct pci_dev *host_bridge; 2486 int pos; 2487 int i, dev_no; 2488 int found = 0; 2489 2490 dev_no = dev->devfn >> 3; 2491 for (i = dev_no; i >= 0; i--) { 2492 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0)); 2493 if (!host_bridge) 2494 continue; 2495 2496 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2497 if (pos != 0) { 2498 found = 1; 2499 break; 2500 } 2501 pci_dev_put(host_bridge); 2502 } 2503 2504 if (!found) 2505 return; 2506 2507 /* don't enable end_device/host_bridge with leaf directly here */ 2508 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) && 2509 host_bridge_with_leaf(host_bridge)) 2510 goto out; 2511 2512 /* root did that ! */ 2513 if (msi_ht_cap_enabled(host_bridge)) 2514 goto out; 2515 2516 ht_enable_msi_mapping(dev); 2517 2518 out: 2519 pci_dev_put(host_bridge); 2520 } 2521 2522 static void __devinit ht_disable_msi_mapping(struct pci_dev *dev) 2523 { 2524 int pos, ttl = 48; 2525 2526 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2527 while (pos && ttl--) { 2528 u8 flags; 2529 2530 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2531 &flags) == 0) { 2532 dev_info(&dev->dev, "Disabling HT MSI Mapping\n"); 2533 2534 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2535 flags & ~HT_MSI_FLAGS_ENABLE); 2536 } 2537 pos = pci_find_next_ht_capability(dev, pos, 2538 HT_CAPTYPE_MSI_MAPPING); 2539 } 2540 } 2541 2542 static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all) 2543 { 2544 struct pci_dev *host_bridge; 2545 int pos; 2546 int found; 2547 2548 if (!pci_msi_enabled()) 2549 return; 2550 2551 /* check if there is HT MSI cap or enabled on this device */ 2552 found = ht_check_msi_mapping(dev); 2553 2554 /* no HT MSI CAP */ 2555 if (found == 0) 2556 return; 2557 2558 /* 2559 * HT MSI mapping should be disabled on devices that are below 2560 * a non-Hypertransport host bridge. Locate the host bridge... 2561 */ 2562 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); 2563 if (host_bridge == NULL) { 2564 dev_warn(&dev->dev, 2565 "nv_msi_ht_cap_quirk didn't locate host bridge\n"); 2566 return; 2567 } 2568 2569 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2570 if (pos != 0) { 2571 /* Host bridge is to HT */ 2572 if (found == 1) { 2573 /* it is not enabled, try to enable it */ 2574 if (all) 2575 ht_enable_msi_mapping(dev); 2576 else 2577 nv_ht_enable_msi_mapping(dev); 2578 } 2579 return; 2580 } 2581 2582 /* HT MSI is not enabled */ 2583 if (found == 1) 2584 return; 2585 2586 /* Host bridge is not to HT, disable HT MSI mapping on this device */ 2587 ht_disable_msi_mapping(dev); 2588 } 2589 2590 static void __devinit nv_msi_ht_cap_quirk_all(struct pci_dev *dev) 2591 { 2592 return __nv_msi_ht_cap_quirk(dev, 1); 2593 } 2594 2595 static void __devinit nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev) 2596 { 2597 return __nv_msi_ht_cap_quirk(dev, 0); 2598 } 2599 2600 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 2601 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 2602 2603 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 2604 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 2605 2606 static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev) 2607 { 2608 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 2609 } 2610 static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev) 2611 { 2612 struct pci_dev *p; 2613 2614 /* SB700 MSI issue will be fixed at HW level from revision A21, 2615 * we need check PCI REVISION ID of SMBus controller to get SB700 2616 * revision. 2617 */ 2618 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS, 2619 NULL); 2620 if (!p) 2621 return; 2622 2623 if ((p->revision < 0x3B) && (p->revision >= 0x30)) 2624 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 2625 pci_dev_put(p); 2626 } 2627 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2628 PCI_DEVICE_ID_TIGON3_5780, 2629 quirk_msi_intx_disable_bug); 2630 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2631 PCI_DEVICE_ID_TIGON3_5780S, 2632 quirk_msi_intx_disable_bug); 2633 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2634 PCI_DEVICE_ID_TIGON3_5714, 2635 quirk_msi_intx_disable_bug); 2636 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2637 PCI_DEVICE_ID_TIGON3_5714S, 2638 quirk_msi_intx_disable_bug); 2639 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2640 PCI_DEVICE_ID_TIGON3_5715, 2641 quirk_msi_intx_disable_bug); 2642 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2643 PCI_DEVICE_ID_TIGON3_5715S, 2644 quirk_msi_intx_disable_bug); 2645 2646 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390, 2647 quirk_msi_intx_disable_ati_bug); 2648 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391, 2649 quirk_msi_intx_disable_ati_bug); 2650 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392, 2651 quirk_msi_intx_disable_ati_bug); 2652 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393, 2653 quirk_msi_intx_disable_ati_bug); 2654 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394, 2655 quirk_msi_intx_disable_ati_bug); 2656 2657 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373, 2658 quirk_msi_intx_disable_bug); 2659 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374, 2660 quirk_msi_intx_disable_bug); 2661 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375, 2662 quirk_msi_intx_disable_bug); 2663 2664 #endif /* CONFIG_PCI_MSI */ 2665 2666 /* Allow manual resource allocation for PCI hotplug bridges 2667 * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For 2668 * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6), 2669 * kernel fails to allocate resources when hotplug device is 2670 * inserted and PCI bus is rescanned. 2671 */ 2672 static void __devinit quirk_hotplug_bridge(struct pci_dev *dev) 2673 { 2674 dev->is_hotplug_bridge = 1; 2675 } 2676 2677 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge); 2678 2679 /* 2680 * This is a quirk for the Ricoh MMC controller found as a part of 2681 * some mulifunction chips. 2682 2683 * This is very similiar and based on the ricoh_mmc driver written by 2684 * Philip Langdale. Thank you for these magic sequences. 2685 * 2686 * These chips implement the four main memory card controllers (SD, MMC, MS, xD) 2687 * and one or both of cardbus or firewire. 2688 * 2689 * It happens that they implement SD and MMC 2690 * support as separate controllers (and PCI functions). The linux SDHCI 2691 * driver supports MMC cards but the chip detects MMC cards in hardware 2692 * and directs them to the MMC controller - so the SDHCI driver never sees 2693 * them. 2694 * 2695 * To get around this, we must disable the useless MMC controller. 2696 * At that point, the SDHCI controller will start seeing them 2697 * It seems to be the case that the relevant PCI registers to deactivate the 2698 * MMC controller live on PCI function 0, which might be the cardbus controller 2699 * or the firewire controller, depending on the particular chip in question 2700 * 2701 * This has to be done early, because as soon as we disable the MMC controller 2702 * other pci functions shift up one level, e.g. function #2 becomes function 2703 * #1, and this will confuse the pci core. 2704 */ 2705 2706 #ifdef CONFIG_MMC_RICOH_MMC 2707 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev) 2708 { 2709 /* disable via cardbus interface */ 2710 u8 write_enable; 2711 u8 write_target; 2712 u8 disable; 2713 2714 /* disable must be done via function #0 */ 2715 if (PCI_FUNC(dev->devfn)) 2716 return; 2717 2718 pci_read_config_byte(dev, 0xB7, &disable); 2719 if (disable & 0x02) 2720 return; 2721 2722 pci_read_config_byte(dev, 0x8E, &write_enable); 2723 pci_write_config_byte(dev, 0x8E, 0xAA); 2724 pci_read_config_byte(dev, 0x8D, &write_target); 2725 pci_write_config_byte(dev, 0x8D, 0xB7); 2726 pci_write_config_byte(dev, 0xB7, disable | 0x02); 2727 pci_write_config_byte(dev, 0x8E, write_enable); 2728 pci_write_config_byte(dev, 0x8D, write_target); 2729 2730 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n"); 2731 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n"); 2732 } 2733 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); 2734 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); 2735 2736 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev) 2737 { 2738 /* disable via firewire interface */ 2739 u8 write_enable; 2740 u8 disable; 2741 2742 /* disable must be done via function #0 */ 2743 if (PCI_FUNC(dev->devfn)) 2744 return; 2745 2746 pci_read_config_byte(dev, 0xCB, &disable); 2747 2748 if (disable & 0x02) 2749 return; 2750 2751 pci_read_config_byte(dev, 0xCA, &write_enable); 2752 pci_write_config_byte(dev, 0xCA, 0x57); 2753 pci_write_config_byte(dev, 0xCB, disable | 0x02); 2754 pci_write_config_byte(dev, 0xCA, write_enable); 2755 2756 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n"); 2757 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n"); 2758 } 2759 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); 2760 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); 2761 #endif /*CONFIG_MMC_RICOH_MMC*/ 2762 2763 #if defined(CONFIG_DMAR) || defined(CONFIG_INTR_REMAP) 2764 #define VTUNCERRMSK_REG 0x1ac 2765 #define VTD_MSK_SPEC_ERRORS (1 << 31) 2766 /* 2767 * This is a quirk for masking vt-d spec defined errors to platform error 2768 * handling logic. With out this, platforms using Intel 7500, 5500 chipsets 2769 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based 2770 * on the RAS config settings of the platform) when a vt-d fault happens. 2771 * The resulting SMI caused the system to hang. 2772 * 2773 * VT-d spec related errors are already handled by the VT-d OS code, so no 2774 * need to report the same error through other channels. 2775 */ 2776 static void vtd_mask_spec_errors(struct pci_dev *dev) 2777 { 2778 u32 word; 2779 2780 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word); 2781 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS); 2782 } 2783 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors); 2784 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors); 2785 #endif 2786 2787 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, 2788 struct pci_fixup *end) 2789 { 2790 while (f < end) { 2791 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) && 2792 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) { 2793 dev_dbg(&dev->dev, "calling %pF\n", f->hook); 2794 f->hook(dev); 2795 } 2796 f++; 2797 } 2798 } 2799 2800 extern struct pci_fixup __start_pci_fixups_early[]; 2801 extern struct pci_fixup __end_pci_fixups_early[]; 2802 extern struct pci_fixup __start_pci_fixups_header[]; 2803 extern struct pci_fixup __end_pci_fixups_header[]; 2804 extern struct pci_fixup __start_pci_fixups_final[]; 2805 extern struct pci_fixup __end_pci_fixups_final[]; 2806 extern struct pci_fixup __start_pci_fixups_enable[]; 2807 extern struct pci_fixup __end_pci_fixups_enable[]; 2808 extern struct pci_fixup __start_pci_fixups_resume[]; 2809 extern struct pci_fixup __end_pci_fixups_resume[]; 2810 extern struct pci_fixup __start_pci_fixups_resume_early[]; 2811 extern struct pci_fixup __end_pci_fixups_resume_early[]; 2812 extern struct pci_fixup __start_pci_fixups_suspend[]; 2813 extern struct pci_fixup __end_pci_fixups_suspend[]; 2814 2815 2816 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) 2817 { 2818 struct pci_fixup *start, *end; 2819 2820 switch(pass) { 2821 case pci_fixup_early: 2822 start = __start_pci_fixups_early; 2823 end = __end_pci_fixups_early; 2824 break; 2825 2826 case pci_fixup_header: 2827 start = __start_pci_fixups_header; 2828 end = __end_pci_fixups_header; 2829 break; 2830 2831 case pci_fixup_final: 2832 start = __start_pci_fixups_final; 2833 end = __end_pci_fixups_final; 2834 break; 2835 2836 case pci_fixup_enable: 2837 start = __start_pci_fixups_enable; 2838 end = __end_pci_fixups_enable; 2839 break; 2840 2841 case pci_fixup_resume: 2842 start = __start_pci_fixups_resume; 2843 end = __end_pci_fixups_resume; 2844 break; 2845 2846 case pci_fixup_resume_early: 2847 start = __start_pci_fixups_resume_early; 2848 end = __end_pci_fixups_resume_early; 2849 break; 2850 2851 case pci_fixup_suspend: 2852 start = __start_pci_fixups_suspend; 2853 end = __end_pci_fixups_suspend; 2854 break; 2855 2856 default: 2857 /* stupid compiler warning, you would think with an enum... */ 2858 return; 2859 } 2860 pci_do_fixups(dev, start, end); 2861 } 2862 EXPORT_SYMBOL(pci_fixup_device); 2863 2864 static int __init pci_apply_final_quirks(void) 2865 { 2866 struct pci_dev *dev = NULL; 2867 u8 cls = 0; 2868 u8 tmp; 2869 2870 if (pci_cache_line_size) 2871 printk(KERN_DEBUG "PCI: CLS %u bytes\n", 2872 pci_cache_line_size << 2); 2873 2874 for_each_pci_dev(dev) { 2875 pci_fixup_device(pci_fixup_final, dev); 2876 /* 2877 * If arch hasn't set it explicitly yet, use the CLS 2878 * value shared by all PCI devices. If there's a 2879 * mismatch, fall back to the default value. 2880 */ 2881 if (!pci_cache_line_size) { 2882 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp); 2883 if (!cls) 2884 cls = tmp; 2885 if (!tmp || cls == tmp) 2886 continue; 2887 2888 printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), " 2889 "using %u bytes\n", cls << 2, tmp << 2, 2890 pci_dfl_cache_line_size << 2); 2891 pci_cache_line_size = pci_dfl_cache_line_size; 2892 } 2893 } 2894 if (!pci_cache_line_size) { 2895 printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n", 2896 cls << 2, pci_dfl_cache_line_size << 2); 2897 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size; 2898 } 2899 2900 return 0; 2901 } 2902 2903 fs_initcall_sync(pci_apply_final_quirks); 2904 2905 /* 2906 * Followings are device-specific reset methods which can be used to 2907 * reset a single function if other methods (e.g. FLR, PM D0->D3) are 2908 * not available. 2909 */ 2910 static int reset_intel_generic_dev(struct pci_dev *dev, int probe) 2911 { 2912 int pos; 2913 2914 /* only implement PCI_CLASS_SERIAL_USB at present */ 2915 if (dev->class == PCI_CLASS_SERIAL_USB) { 2916 pos = pci_find_capability(dev, PCI_CAP_ID_VNDR); 2917 if (!pos) 2918 return -ENOTTY; 2919 2920 if (probe) 2921 return 0; 2922 2923 pci_write_config_byte(dev, pos + 0x4, 1); 2924 msleep(100); 2925 2926 return 0; 2927 } else { 2928 return -ENOTTY; 2929 } 2930 } 2931 2932 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe) 2933 { 2934 int pos; 2935 2936 pos = pci_find_capability(dev, PCI_CAP_ID_EXP); 2937 if (!pos) 2938 return -ENOTTY; 2939 2940 if (probe) 2941 return 0; 2942 2943 pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, 2944 PCI_EXP_DEVCTL_BCR_FLR); 2945 msleep(100); 2946 2947 return 0; 2948 } 2949 2950 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed 2951 2952 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = { 2953 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF, 2954 reset_intel_82599_sfp_virtfn }, 2955 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, 2956 reset_intel_generic_dev }, 2957 { 0 } 2958 }; 2959 2960 int pci_dev_specific_reset(struct pci_dev *dev, int probe) 2961 { 2962 const struct pci_dev_reset_methods *i; 2963 2964 for (i = pci_dev_reset_methods; i->reset; i++) { 2965 if ((i->vendor == dev->vendor || 2966 i->vendor == (u16)PCI_ANY_ID) && 2967 (i->device == dev->device || 2968 i->device == (u16)PCI_ANY_ID)) 2969 return i->reset(dev, probe); 2970 } 2971 2972 return -ENOTTY; 2973 } 2974