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 "pci.h" 29 30 int isa_dma_bridge_buggy; 31 EXPORT_SYMBOL(isa_dma_bridge_buggy); 32 int pci_pci_problems; 33 EXPORT_SYMBOL(pci_pci_problems); 34 35 #ifdef CONFIG_PCI_QUIRKS 36 /* 37 * This quirk function disables memory decoding and releases memory resources 38 * of the device specified by kernel's boot parameter 'pci=resource_alignment='. 39 * It also rounds up size to specified alignment. 40 * Later on, the kernel will assign page-aligned memory resource back 41 * to the device. 42 */ 43 static void __devinit quirk_resource_alignment(struct pci_dev *dev) 44 { 45 int i; 46 struct resource *r; 47 resource_size_t align, size; 48 u16 command; 49 50 if (!pci_is_reassigndev(dev)) 51 return; 52 53 if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL && 54 (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) { 55 dev_warn(&dev->dev, 56 "Can't reassign resources to host bridge.\n"); 57 return; 58 } 59 60 dev_info(&dev->dev, 61 "Disabling memory decoding and releasing memory resources.\n"); 62 pci_read_config_word(dev, PCI_COMMAND, &command); 63 command &= ~PCI_COMMAND_MEMORY; 64 pci_write_config_word(dev, PCI_COMMAND, command); 65 66 align = pci_specified_resource_alignment(dev); 67 for (i=0; i < PCI_BRIDGE_RESOURCES; i++) { 68 r = &dev->resource[i]; 69 if (!(r->flags & IORESOURCE_MEM)) 70 continue; 71 size = resource_size(r); 72 if (size < align) { 73 size = align; 74 dev_info(&dev->dev, 75 "Rounding up size of resource #%d to %#llx.\n", 76 i, (unsigned long long)size); 77 } 78 r->end = size - 1; 79 r->start = 0; 80 } 81 /* Need to disable bridge's resource window, 82 * to enable the kernel to reassign new resource 83 * window later on. 84 */ 85 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE && 86 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { 87 for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) { 88 r = &dev->resource[i]; 89 if (!(r->flags & IORESOURCE_MEM)) 90 continue; 91 r->end = resource_size(r) - 1; 92 r->start = 0; 93 } 94 pci_disable_bridge_window(dev); 95 } 96 } 97 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment); 98 99 /* The Mellanox Tavor device gives false positive parity errors 100 * Mark this device with a broken_parity_status, to allow 101 * PCI scanning code to "skip" this now blacklisted device. 102 */ 103 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev) 104 { 105 dev->broken_parity_status = 1; /* This device gives false positives */ 106 } 107 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor); 108 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor); 109 110 /* Deal with broken BIOS'es that neglect to enable passive release, 111 which can cause problems in combination with the 82441FX/PPro MTRRs */ 112 static void quirk_passive_release(struct pci_dev *dev) 113 { 114 struct pci_dev *d = NULL; 115 unsigned char dlc; 116 117 /* We have to make sure a particular bit is set in the PIIX3 118 ISA bridge, so we have to go out and find it. */ 119 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) { 120 pci_read_config_byte(d, 0x82, &dlc); 121 if (!(dlc & 1<<1)) { 122 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n"); 123 dlc |= 1<<1; 124 pci_write_config_byte(d, 0x82, dlc); 125 } 126 } 127 } 128 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 129 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 130 131 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround 132 but VIA don't answer queries. If you happen to have good contacts at VIA 133 ask them for me please -- Alan 134 135 This appears to be BIOS not version dependent. So presumably there is a 136 chipset level fix */ 137 138 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev) 139 { 140 if (!isa_dma_bridge_buggy) { 141 isa_dma_bridge_buggy=1; 142 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n"); 143 } 144 } 145 /* 146 * Its not totally clear which chipsets are the problematic ones 147 * We know 82C586 and 82C596 variants are affected. 148 */ 149 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs); 150 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs); 151 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs); 152 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs); 153 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs); 154 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs); 155 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs); 156 157 /* 158 * Chipsets where PCI->PCI transfers vanish or hang 159 */ 160 static void __devinit quirk_nopcipci(struct pci_dev *dev) 161 { 162 if ((pci_pci_problems & PCIPCI_FAIL)==0) { 163 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n"); 164 pci_pci_problems |= PCIPCI_FAIL; 165 } 166 } 167 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci); 168 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci); 169 170 static void __devinit quirk_nopciamd(struct pci_dev *dev) 171 { 172 u8 rev; 173 pci_read_config_byte(dev, 0x08, &rev); 174 if (rev == 0x13) { 175 /* Erratum 24 */ 176 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n"); 177 pci_pci_problems |= PCIAGP_FAIL; 178 } 179 } 180 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd); 181 182 /* 183 * Triton requires workarounds to be used by the drivers 184 */ 185 static void __devinit quirk_triton(struct pci_dev *dev) 186 { 187 if ((pci_pci_problems&PCIPCI_TRITON)==0) { 188 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 189 pci_pci_problems |= PCIPCI_TRITON; 190 } 191 } 192 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton); 193 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton); 194 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton); 195 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton); 196 197 /* 198 * VIA Apollo KT133 needs PCI latency patch 199 * Made according to a windows driver based patch by George E. Breese 200 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm 201 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for 202 * the info on which Mr Breese based his work. 203 * 204 * Updated based on further information from the site and also on 205 * information provided by VIA 206 */ 207 static void quirk_vialatency(struct pci_dev *dev) 208 { 209 struct pci_dev *p; 210 u8 busarb; 211 /* Ok we have a potential problem chipset here. Now see if we have 212 a buggy southbridge */ 213 214 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL); 215 if (p!=NULL) { 216 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */ 217 /* Check for buggy part revisions */ 218 if (p->revision < 0x40 || p->revision > 0x42) 219 goto exit; 220 } else { 221 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL); 222 if (p==NULL) /* No problem parts */ 223 goto exit; 224 /* Check for buggy part revisions */ 225 if (p->revision < 0x10 || p->revision > 0x12) 226 goto exit; 227 } 228 229 /* 230 * Ok we have the problem. Now set the PCI master grant to 231 * occur every master grant. The apparent bug is that under high 232 * PCI load (quite common in Linux of course) you can get data 233 * loss when the CPU is held off the bus for 3 bus master requests 234 * This happens to include the IDE controllers.... 235 * 236 * VIA only apply this fix when an SB Live! is present but under 237 * both Linux and Windows this isnt enough, and we have seen 238 * corruption without SB Live! but with things like 3 UDMA IDE 239 * controllers. So we ignore that bit of the VIA recommendation.. 240 */ 241 242 pci_read_config_byte(dev, 0x76, &busarb); 243 /* Set bit 4 and bi 5 of byte 76 to 0x01 244 "Master priority rotation on every PCI master grant */ 245 busarb &= ~(1<<5); 246 busarb |= (1<<4); 247 pci_write_config_byte(dev, 0x76, busarb); 248 dev_info(&dev->dev, "Applying VIA southbridge workaround\n"); 249 exit: 250 pci_dev_put(p); 251 } 252 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 253 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 255 /* Must restore this on a resume from RAM */ 256 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 257 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 258 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 259 260 /* 261 * VIA Apollo VP3 needs ETBF on BT848/878 262 */ 263 static void __devinit quirk_viaetbf(struct pci_dev *dev) 264 { 265 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) { 266 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 267 pci_pci_problems |= PCIPCI_VIAETBF; 268 } 269 } 270 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf); 271 272 static void __devinit quirk_vsfx(struct pci_dev *dev) 273 { 274 if ((pci_pci_problems&PCIPCI_VSFX)==0) { 275 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 276 pci_pci_problems |= PCIPCI_VSFX; 277 } 278 } 279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx); 280 281 /* 282 * Ali Magik requires workarounds to be used by the drivers 283 * that DMA to AGP space. Latency must be set to 0xA and triton 284 * workaround applied too 285 * [Info kindly provided by ALi] 286 */ 287 static void __init quirk_alimagik(struct pci_dev *dev) 288 { 289 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) { 290 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 291 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON; 292 } 293 } 294 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik); 295 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik); 296 297 /* 298 * Natoma has some interesting boundary conditions with Zoran stuff 299 * at least 300 */ 301 static void __devinit quirk_natoma(struct pci_dev *dev) 302 { 303 if ((pci_pci_problems&PCIPCI_NATOMA)==0) { 304 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 305 pci_pci_problems |= PCIPCI_NATOMA; 306 } 307 } 308 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma); 309 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma); 310 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma); 311 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma); 312 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma); 313 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma); 314 315 /* 316 * This chip can cause PCI parity errors if config register 0xA0 is read 317 * while DMAs are occurring. 318 */ 319 static void __devinit quirk_citrine(struct pci_dev *dev) 320 { 321 dev->cfg_size = 0xA0; 322 } 323 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine); 324 325 /* 326 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M. 327 * If it's needed, re-allocate the region. 328 */ 329 static void __devinit quirk_s3_64M(struct pci_dev *dev) 330 { 331 struct resource *r = &dev->resource[0]; 332 333 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) { 334 r->start = 0; 335 r->end = 0x3ffffff; 336 } 337 } 338 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M); 339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M); 340 341 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region, 342 unsigned size, int nr, const char *name) 343 { 344 region &= ~(size-1); 345 if (region) { 346 struct pci_bus_region bus_region; 347 struct resource *res = dev->resource + nr; 348 349 res->name = pci_name(dev); 350 res->start = region; 351 res->end = region + size - 1; 352 res->flags = IORESOURCE_IO; 353 354 /* Convert from PCI bus to resource space. */ 355 bus_region.start = res->start; 356 bus_region.end = res->end; 357 pcibios_bus_to_resource(dev, res, &bus_region); 358 359 pci_claim_resource(dev, nr); 360 dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name); 361 } 362 } 363 364 /* 365 * ATI Northbridge setups MCE the processor if you even 366 * read somewhere between 0x3b0->0x3bb or read 0x3d3 367 */ 368 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev) 369 { 370 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n"); 371 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */ 372 request_region(0x3b0, 0x0C, "RadeonIGP"); 373 request_region(0x3d3, 0x01, "RadeonIGP"); 374 } 375 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce); 376 377 /* 378 * Let's make the southbridge information explicit instead 379 * of having to worry about people probing the ACPI areas, 380 * for example.. (Yes, it happens, and if you read the wrong 381 * ACPI register it will put the machine to sleep with no 382 * way of waking it up again. Bummer). 383 * 384 * ALI M7101: Two IO regions pointed to by words at 385 * 0xE0 (64 bytes of ACPI registers) 386 * 0xE2 (32 bytes of SMB registers) 387 */ 388 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev) 389 { 390 u16 region; 391 392 pci_read_config_word(dev, 0xE0, ®ion); 393 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI"); 394 pci_read_config_word(dev, 0xE2, ®ion); 395 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB"); 396 } 397 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi); 398 399 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 400 { 401 u32 devres; 402 u32 mask, size, base; 403 404 pci_read_config_dword(dev, port, &devres); 405 if ((devres & enable) != enable) 406 return; 407 mask = (devres >> 16) & 15; 408 base = devres & 0xffff; 409 size = 16; 410 for (;;) { 411 unsigned bit = size >> 1; 412 if ((bit & mask) == bit) 413 break; 414 size = bit; 415 } 416 /* 417 * For now we only print it out. Eventually we'll want to 418 * reserve it (at least if it's in the 0x1000+ range), but 419 * let's get enough confirmation reports first. 420 */ 421 base &= -size; 422 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1); 423 } 424 425 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 426 { 427 u32 devres; 428 u32 mask, size, base; 429 430 pci_read_config_dword(dev, port, &devres); 431 if ((devres & enable) != enable) 432 return; 433 base = devres & 0xffff0000; 434 mask = (devres & 0x3f) << 16; 435 size = 128 << 16; 436 for (;;) { 437 unsigned bit = size >> 1; 438 if ((bit & mask) == bit) 439 break; 440 size = bit; 441 } 442 /* 443 * For now we only print it out. Eventually we'll want to 444 * reserve it, but let's get enough confirmation reports first. 445 */ 446 base &= -size; 447 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1); 448 } 449 450 /* 451 * PIIX4 ACPI: Two IO regions pointed to by longwords at 452 * 0x40 (64 bytes of ACPI registers) 453 * 0x90 (16 bytes of SMB registers) 454 * and a few strange programmable PIIX4 device resources. 455 */ 456 static void __devinit quirk_piix4_acpi(struct pci_dev *dev) 457 { 458 u32 region, res_a; 459 460 pci_read_config_dword(dev, 0x40, ®ion); 461 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI"); 462 pci_read_config_dword(dev, 0x90, ®ion); 463 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB"); 464 465 /* Device resource A has enables for some of the other ones */ 466 pci_read_config_dword(dev, 0x5c, &res_a); 467 468 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21); 469 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21); 470 471 /* Device resource D is just bitfields for static resources */ 472 473 /* Device 12 enabled? */ 474 if (res_a & (1 << 29)) { 475 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20); 476 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7); 477 } 478 /* Device 13 enabled? */ 479 if (res_a & (1 << 30)) { 480 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20); 481 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7); 482 } 483 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20); 484 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); 485 } 486 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi); 487 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi); 488 489 /* 490 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at 491 * 0x40 (128 bytes of ACPI, GPIO & TCO registers) 492 * 0x58 (64 bytes of GPIO I/O space) 493 */ 494 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev) 495 { 496 u32 region; 497 498 pci_read_config_dword(dev, 0x40, ®ion); 499 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO"); 500 501 pci_read_config_dword(dev, 0x58, ®ion); 502 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO"); 503 } 504 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi); 505 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi); 506 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi); 507 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi); 508 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi); 509 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi); 510 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi); 511 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi); 512 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi); 513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi); 514 515 static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev) 516 { 517 u32 region; 518 519 pci_read_config_dword(dev, 0x40, ®ion); 520 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO"); 521 522 pci_read_config_dword(dev, 0x48, ®ion); 523 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO"); 524 } 525 526 static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize) 527 { 528 u32 val; 529 u32 size, base; 530 531 pci_read_config_dword(dev, reg, &val); 532 533 /* Enabled? */ 534 if (!(val & 1)) 535 return; 536 base = val & 0xfffc; 537 if (dynsize) { 538 /* 539 * This is not correct. It is 16, 32 or 64 bytes depending on 540 * register D31:F0:ADh bits 5:4. 541 * 542 * But this gets us at least _part_ of it. 543 */ 544 size = 16; 545 } else { 546 size = 128; 547 } 548 base &= ~(size-1); 549 550 /* Just print it out for now. We should reserve it after more debugging */ 551 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1); 552 } 553 554 static void __devinit quirk_ich6_lpc(struct pci_dev *dev) 555 { 556 /* Shared ACPI/GPIO decode with all ICH6+ */ 557 ich6_lpc_acpi_gpio(dev); 558 559 /* ICH6-specific generic IO decode */ 560 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0); 561 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1); 562 } 563 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc); 564 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc); 565 566 static void __devinit ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name) 567 { 568 u32 val; 569 u32 mask, base; 570 571 pci_read_config_dword(dev, reg, &val); 572 573 /* Enabled? */ 574 if (!(val & 1)) 575 return; 576 577 /* 578 * IO base in bits 15:2, mask in bits 23:18, both 579 * are dword-based 580 */ 581 base = val & 0xfffc; 582 mask = (val >> 16) & 0xfc; 583 mask |= 3; 584 585 /* Just print it out for now. We should reserve it after more debugging */ 586 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask); 587 } 588 589 /* ICH7-10 has the same common LPC generic IO decode registers */ 590 static void __devinit quirk_ich7_lpc(struct pci_dev *dev) 591 { 592 /* We share the common ACPI/DPIO decode with ICH6 */ 593 ich6_lpc_acpi_gpio(dev); 594 595 /* And have 4 ICH7+ generic decodes */ 596 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1"); 597 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2"); 598 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3"); 599 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4"); 600 } 601 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc); 602 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc); 603 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc); 604 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc); 605 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc); 606 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc); 607 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc); 608 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc); 609 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc); 610 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc); 611 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc); 612 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc); 613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc); 614 615 /* 616 * VIA ACPI: One IO region pointed to by longword at 617 * 0x48 or 0x20 (256 bytes of ACPI registers) 618 */ 619 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev) 620 { 621 u32 region; 622 623 if (dev->revision & 0x10) { 624 pci_read_config_dword(dev, 0x48, ®ion); 625 region &= PCI_BASE_ADDRESS_IO_MASK; 626 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI"); 627 } 628 } 629 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi); 630 631 /* 632 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at 633 * 0x48 (256 bytes of ACPI registers) 634 * 0x70 (128 bytes of hardware monitoring register) 635 * 0x90 (16 bytes of SMB registers) 636 */ 637 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev) 638 { 639 u16 hm; 640 u32 smb; 641 642 quirk_vt82c586_acpi(dev); 643 644 pci_read_config_word(dev, 0x70, &hm); 645 hm &= PCI_BASE_ADDRESS_IO_MASK; 646 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon"); 647 648 pci_read_config_dword(dev, 0x90, &smb); 649 smb &= PCI_BASE_ADDRESS_IO_MASK; 650 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB"); 651 } 652 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi); 653 654 /* 655 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at 656 * 0x88 (128 bytes of power management registers) 657 * 0xd0 (16 bytes of SMB registers) 658 */ 659 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev) 660 { 661 u16 pm, smb; 662 663 pci_read_config_word(dev, 0x88, &pm); 664 pm &= PCI_BASE_ADDRESS_IO_MASK; 665 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM"); 666 667 pci_read_config_word(dev, 0xd0, &smb); 668 smb &= PCI_BASE_ADDRESS_IO_MASK; 669 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB"); 670 } 671 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi); 672 673 /* 674 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back: 675 * Disable fast back-to-back on the secondary bus segment 676 */ 677 static void __devinit quirk_xio2000a(struct pci_dev *dev) 678 { 679 struct pci_dev *pdev; 680 u16 command; 681 682 dev_warn(&dev->dev, "TI XIO2000a quirk detected; " 683 "secondary bus fast back-to-back transfers disabled\n"); 684 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) { 685 pci_read_config_word(pdev, PCI_COMMAND, &command); 686 if (command & PCI_COMMAND_FAST_BACK) 687 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK); 688 } 689 } 690 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A, 691 quirk_xio2000a); 692 693 #ifdef CONFIG_X86_IO_APIC 694 695 #include <asm/io_apic.h> 696 697 /* 698 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip 699 * devices to the external APIC. 700 * 701 * TODO: When we have device-specific interrupt routers, 702 * this code will go away from quirks. 703 */ 704 static void quirk_via_ioapic(struct pci_dev *dev) 705 { 706 u8 tmp; 707 708 if (nr_ioapics < 1) 709 tmp = 0; /* nothing routed to external APIC */ 710 else 711 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */ 712 713 dev_info(&dev->dev, "%sbling VIA external APIC routing\n", 714 tmp == 0 ? "Disa" : "Ena"); 715 716 /* Offset 0x58: External APIC IRQ output control */ 717 pci_write_config_byte (dev, 0x58, tmp); 718 } 719 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 720 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 721 722 /* 723 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit. 724 * This leads to doubled level interrupt rates. 725 * Set this bit to get rid of cycle wastage. 726 * Otherwise uncritical. 727 */ 728 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev) 729 { 730 u8 misc_control2; 731 #define BYPASS_APIC_DEASSERT 8 732 733 pci_read_config_byte(dev, 0x5B, &misc_control2); 734 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) { 735 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n"); 736 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT); 737 } 738 } 739 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 740 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 741 742 /* 743 * The AMD io apic can hang the box when an apic irq is masked. 744 * We check all revs >= B0 (yet not in the pre production!) as the bug 745 * is currently marked NoFix 746 * 747 * We have multiple reports of hangs with this chipset that went away with 748 * noapic specified. For the moment we assume it's the erratum. We may be wrong 749 * of course. However the advice is demonstrably good even if so.. 750 */ 751 static void __devinit quirk_amd_ioapic(struct pci_dev *dev) 752 { 753 if (dev->revision >= 0x02) { 754 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n"); 755 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n"); 756 } 757 } 758 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic); 759 760 static void __init quirk_ioapic_rmw(struct pci_dev *dev) 761 { 762 if (dev->devfn == 0 && dev->bus->number == 0) 763 sis_apic_bug = 1; 764 } 765 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw); 766 #endif /* CONFIG_X86_IO_APIC */ 767 768 /* 769 * Some settings of MMRBC can lead to data corruption so block changes. 770 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide 771 */ 772 static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev) 773 { 774 if (dev->subordinate && dev->revision <= 0x12) { 775 dev_info(&dev->dev, "AMD8131 rev %x detected; " 776 "disabling PCI-X MMRBC\n", dev->revision); 777 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC; 778 } 779 } 780 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc); 781 782 /* 783 * FIXME: it is questionable that quirk_via_acpi 784 * is needed. It shows up as an ISA bridge, and does not 785 * support the PCI_INTERRUPT_LINE register at all. Therefore 786 * it seems like setting the pci_dev's 'irq' to the 787 * value of the ACPI SCI interrupt is only done for convenience. 788 * -jgarzik 789 */ 790 static void __devinit quirk_via_acpi(struct pci_dev *d) 791 { 792 /* 793 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42 794 */ 795 u8 irq; 796 pci_read_config_byte(d, 0x42, &irq); 797 irq &= 0xf; 798 if (irq && (irq != 2)) 799 d->irq = irq; 800 } 801 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi); 802 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi); 803 804 805 /* 806 * VIA bridges which have VLink 807 */ 808 809 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18; 810 811 static void quirk_via_bridge(struct pci_dev *dev) 812 { 813 /* See what bridge we have and find the device ranges */ 814 switch (dev->device) { 815 case PCI_DEVICE_ID_VIA_82C686: 816 /* The VT82C686 is special, it attaches to PCI and can have 817 any device number. All its subdevices are functions of 818 that single device. */ 819 via_vlink_dev_lo = PCI_SLOT(dev->devfn); 820 via_vlink_dev_hi = PCI_SLOT(dev->devfn); 821 break; 822 case PCI_DEVICE_ID_VIA_8237: 823 case PCI_DEVICE_ID_VIA_8237A: 824 via_vlink_dev_lo = 15; 825 break; 826 case PCI_DEVICE_ID_VIA_8235: 827 via_vlink_dev_lo = 16; 828 break; 829 case PCI_DEVICE_ID_VIA_8231: 830 case PCI_DEVICE_ID_VIA_8233_0: 831 case PCI_DEVICE_ID_VIA_8233A: 832 case PCI_DEVICE_ID_VIA_8233C_0: 833 via_vlink_dev_lo = 17; 834 break; 835 } 836 } 837 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge); 838 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge); 839 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge); 840 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge); 841 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge); 842 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge); 843 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge); 844 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge); 845 846 /** 847 * quirk_via_vlink - VIA VLink IRQ number update 848 * @dev: PCI device 849 * 850 * If the device we are dealing with is on a PIC IRQ we need to 851 * ensure that the IRQ line register which usually is not relevant 852 * for PCI cards, is actually written so that interrupts get sent 853 * to the right place. 854 * We only do this on systems where a VIA south bridge was detected, 855 * and only for VIA devices on the motherboard (see quirk_via_bridge 856 * above). 857 */ 858 859 static void quirk_via_vlink(struct pci_dev *dev) 860 { 861 u8 irq, new_irq; 862 863 /* Check if we have VLink at all */ 864 if (via_vlink_dev_lo == -1) 865 return; 866 867 new_irq = dev->irq; 868 869 /* Don't quirk interrupts outside the legacy IRQ range */ 870 if (!new_irq || new_irq > 15) 871 return; 872 873 /* Internal device ? */ 874 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi || 875 PCI_SLOT(dev->devfn) < via_vlink_dev_lo) 876 return; 877 878 /* This is an internal VLink device on a PIC interrupt. The BIOS 879 ought to have set this but may not have, so we redo it */ 880 881 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); 882 if (new_irq != irq) { 883 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n", 884 irq, new_irq); 885 udelay(15); /* unknown if delay really needed */ 886 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); 887 } 888 } 889 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink); 890 891 /* 892 * VIA VT82C598 has its device ID settable and many BIOSes 893 * set it to the ID of VT82C597 for backward compatibility. 894 * We need to switch it off to be able to recognize the real 895 * type of the chip. 896 */ 897 static void __devinit quirk_vt82c598_id(struct pci_dev *dev) 898 { 899 pci_write_config_byte(dev, 0xfc, 0); 900 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device); 901 } 902 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id); 903 904 /* 905 * CardBus controllers have a legacy base address that enables them 906 * to respond as i82365 pcmcia controllers. We don't want them to 907 * do this even if the Linux CardBus driver is not loaded, because 908 * the Linux i82365 driver does not (and should not) handle CardBus. 909 */ 910 static void quirk_cardbus_legacy(struct pci_dev *dev) 911 { 912 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class) 913 return; 914 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0); 915 } 916 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy); 917 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy); 918 919 /* 920 * Following the PCI ordering rules is optional on the AMD762. I'm not 921 * sure what the designers were smoking but let's not inhale... 922 * 923 * To be fair to AMD, it follows the spec by default, its BIOS people 924 * who turn it off! 925 */ 926 static void quirk_amd_ordering(struct pci_dev *dev) 927 { 928 u32 pcic; 929 pci_read_config_dword(dev, 0x4C, &pcic); 930 if ((pcic&6)!=6) { 931 pcic |= 6; 932 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n"); 933 pci_write_config_dword(dev, 0x4C, pcic); 934 pci_read_config_dword(dev, 0x84, &pcic); 935 pcic |= (1<<23); /* Required in this mode */ 936 pci_write_config_dword(dev, 0x84, pcic); 937 } 938 } 939 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 940 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 941 942 /* 943 * DreamWorks provided workaround for Dunord I-3000 problem 944 * 945 * This card decodes and responds to addresses not apparently 946 * assigned to it. We force a larger allocation to ensure that 947 * nothing gets put too close to it. 948 */ 949 static void __devinit quirk_dunord ( struct pci_dev * dev ) 950 { 951 struct resource *r = &dev->resource [1]; 952 r->start = 0; 953 r->end = 0xffffff; 954 } 955 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord); 956 957 /* 958 * i82380FB mobile docking controller: its PCI-to-PCI bridge 959 * is subtractive decoding (transparent), and does indicate this 960 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80 961 * instead of 0x01. 962 */ 963 static void __devinit quirk_transparent_bridge(struct pci_dev *dev) 964 { 965 dev->transparent = 1; 966 } 967 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge); 968 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge); 969 970 /* 971 * Common misconfiguration of the MediaGX/Geode PCI master that will 972 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 973 * datasheets found at http://www.national.com/ds/GX for info on what 974 * these bits do. <christer@weinigel.se> 975 */ 976 static void quirk_mediagx_master(struct pci_dev *dev) 977 { 978 u8 reg; 979 pci_read_config_byte(dev, 0x41, ®); 980 if (reg & 2) { 981 reg &= ~2; 982 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg); 983 pci_write_config_byte(dev, 0x41, reg); 984 } 985 } 986 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 987 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 988 989 /* 990 * Ensure C0 rev restreaming is off. This is normally done by 991 * the BIOS but in the odd case it is not the results are corruption 992 * hence the presence of a Linux check 993 */ 994 static void quirk_disable_pxb(struct pci_dev *pdev) 995 { 996 u16 config; 997 998 if (pdev->revision != 0x04) /* Only C0 requires this */ 999 return; 1000 pci_read_config_word(pdev, 0x40, &config); 1001 if (config & (1<<6)) { 1002 config &= ~(1<<6); 1003 pci_write_config_word(pdev, 0x40, config); 1004 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n"); 1005 } 1006 } 1007 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 1008 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 1009 1010 static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev) 1011 { 1012 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */ 1013 u8 tmp; 1014 1015 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp); 1016 if (tmp == 0x01) { 1017 pci_read_config_byte(pdev, 0x40, &tmp); 1018 pci_write_config_byte(pdev, 0x40, tmp|1); 1019 pci_write_config_byte(pdev, 0x9, 1); 1020 pci_write_config_byte(pdev, 0xa, 6); 1021 pci_write_config_byte(pdev, 0x40, tmp); 1022 1023 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI; 1024 dev_info(&pdev->dev, "set SATA to AHCI mode\n"); 1025 } 1026 } 1027 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1028 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1029 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1030 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1031 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); 1032 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); 1033 1034 /* 1035 * Serverworks CSB5 IDE does not fully support native mode 1036 */ 1037 static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev) 1038 { 1039 u8 prog; 1040 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1041 if (prog & 5) { 1042 prog &= ~5; 1043 pdev->class &= ~5; 1044 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1045 /* PCI layer will sort out resources */ 1046 } 1047 } 1048 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide); 1049 1050 /* 1051 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same 1052 */ 1053 static void __init quirk_ide_samemode(struct pci_dev *pdev) 1054 { 1055 u8 prog; 1056 1057 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1058 1059 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) { 1060 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n"); 1061 prog &= ~5; 1062 pdev->class &= ~5; 1063 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1064 } 1065 } 1066 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode); 1067 1068 /* 1069 * Some ATA devices break if put into D3 1070 */ 1071 1072 static void __devinit quirk_no_ata_d3(struct pci_dev *pdev) 1073 { 1074 /* Quirk the legacy ATA devices only. The AHCI ones are ok */ 1075 if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) 1076 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3; 1077 } 1078 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, quirk_no_ata_d3); 1079 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_no_ata_d3); 1080 /* ALi loses some register settings that we cannot then restore */ 1081 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, quirk_no_ata_d3); 1082 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures 1083 occur when mode detecting */ 1084 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_no_ata_d3); 1085 1086 /* This was originally an Alpha specific thing, but it really fits here. 1087 * The i82375 PCI/EISA bridge appears as non-classified. Fix that. 1088 */ 1089 static void __init quirk_eisa_bridge(struct pci_dev *dev) 1090 { 1091 dev->class = PCI_CLASS_BRIDGE_EISA << 8; 1092 } 1093 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge); 1094 1095 1096 /* 1097 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge 1098 * is not activated. The myth is that Asus said that they do not want the 1099 * users to be irritated by just another PCI Device in the Win98 device 1100 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors 1101 * package 2.7.0 for details) 1102 * 1103 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC 1104 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it 1105 * becomes necessary to do this tweak in two steps -- the chosen trigger 1106 * is either the Host bridge (preferred) or on-board VGA controller. 1107 * 1108 * Note that we used to unhide the SMBus that way on Toshiba laptops 1109 * (Satellite A40 and Tecra M2) but then found that the thermal management 1110 * was done by SMM code, which could cause unsynchronized concurrent 1111 * accesses to the SMBus registers, with potentially bad effects. Thus you 1112 * should be very careful when adding new entries: if SMM is accessing the 1113 * Intel SMBus, this is a very good reason to leave it hidden. 1114 * 1115 * Likewise, many recent laptops use ACPI for thermal management. If the 1116 * ACPI DSDT code accesses the SMBus, then Linux should not access it 1117 * natively, and keeping the SMBus hidden is the right thing to do. If you 1118 * are about to add an entry in the table below, please first disassemble 1119 * the DSDT and double-check that there is no code accessing the SMBus. 1120 */ 1121 static int asus_hides_smbus; 1122 1123 static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev) 1124 { 1125 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1126 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB) 1127 switch(dev->subsystem_device) { 1128 case 0x8025: /* P4B-LX */ 1129 case 0x8070: /* P4B */ 1130 case 0x8088: /* P4B533 */ 1131 case 0x1626: /* L3C notebook */ 1132 asus_hides_smbus = 1; 1133 } 1134 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) 1135 switch(dev->subsystem_device) { 1136 case 0x80b1: /* P4GE-V */ 1137 case 0x80b2: /* P4PE */ 1138 case 0x8093: /* P4B533-V */ 1139 asus_hides_smbus = 1; 1140 } 1141 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB) 1142 switch(dev->subsystem_device) { 1143 case 0x8030: /* P4T533 */ 1144 asus_hides_smbus = 1; 1145 } 1146 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0) 1147 switch (dev->subsystem_device) { 1148 case 0x8070: /* P4G8X Deluxe */ 1149 asus_hides_smbus = 1; 1150 } 1151 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH) 1152 switch (dev->subsystem_device) { 1153 case 0x80c9: /* PU-DLS */ 1154 asus_hides_smbus = 1; 1155 } 1156 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB) 1157 switch (dev->subsystem_device) { 1158 case 0x1751: /* M2N notebook */ 1159 case 0x1821: /* M5N notebook */ 1160 case 0x1897: /* A6L notebook */ 1161 asus_hides_smbus = 1; 1162 } 1163 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1164 switch (dev->subsystem_device) { 1165 case 0x184b: /* W1N notebook */ 1166 case 0x186a: /* M6Ne notebook */ 1167 asus_hides_smbus = 1; 1168 } 1169 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1170 switch (dev->subsystem_device) { 1171 case 0x80f2: /* P4P800-X */ 1172 asus_hides_smbus = 1; 1173 } 1174 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) 1175 switch (dev->subsystem_device) { 1176 case 0x1882: /* M6V notebook */ 1177 case 0x1977: /* A6VA notebook */ 1178 asus_hides_smbus = 1; 1179 } 1180 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) { 1181 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1182 switch(dev->subsystem_device) { 1183 case 0x088C: /* HP Compaq nc8000 */ 1184 case 0x0890: /* HP Compaq nc6000 */ 1185 asus_hides_smbus = 1; 1186 } 1187 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1188 switch (dev->subsystem_device) { 1189 case 0x12bc: /* HP D330L */ 1190 case 0x12bd: /* HP D530 */ 1191 case 0x006a: /* HP Compaq nx9500 */ 1192 asus_hides_smbus = 1; 1193 } 1194 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB) 1195 switch (dev->subsystem_device) { 1196 case 0x12bf: /* HP xw4100 */ 1197 asus_hides_smbus = 1; 1198 } 1199 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) { 1200 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1201 switch(dev->subsystem_device) { 1202 case 0xC00C: /* Samsung P35 notebook */ 1203 asus_hides_smbus = 1; 1204 } 1205 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) { 1206 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1207 switch(dev->subsystem_device) { 1208 case 0x0058: /* Compaq Evo N620c */ 1209 asus_hides_smbus = 1; 1210 } 1211 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3) 1212 switch(dev->subsystem_device) { 1213 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */ 1214 /* Motherboard doesn't have Host bridge 1215 * subvendor/subdevice IDs, therefore checking 1216 * its on-board VGA controller */ 1217 asus_hides_smbus = 1; 1218 } 1219 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2) 1220 switch(dev->subsystem_device) { 1221 case 0x00b8: /* Compaq Evo D510 CMT */ 1222 case 0x00b9: /* Compaq Evo D510 SFF */ 1223 case 0x00ba: /* Compaq Evo D510 USDT */ 1224 /* Motherboard doesn't have Host bridge 1225 * subvendor/subdevice IDs and on-board VGA 1226 * controller is disabled if an AGP card is 1227 * inserted, therefore checking USB UHCI 1228 * Controller #1 */ 1229 asus_hides_smbus = 1; 1230 } 1231 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC) 1232 switch (dev->subsystem_device) { 1233 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */ 1234 /* Motherboard doesn't have host bridge 1235 * subvendor/subdevice IDs, therefore checking 1236 * its on-board VGA controller */ 1237 asus_hides_smbus = 1; 1238 } 1239 } 1240 } 1241 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge); 1242 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge); 1243 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge); 1244 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge); 1245 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge); 1246 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge); 1247 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge); 1248 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge); 1249 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge); 1250 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge); 1251 1252 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge); 1253 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge); 1254 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge); 1255 1256 static void asus_hides_smbus_lpc(struct pci_dev *dev) 1257 { 1258 u16 val; 1259 1260 if (likely(!asus_hides_smbus)) 1261 return; 1262 1263 pci_read_config_word(dev, 0xF2, &val); 1264 if (val & 0x8) { 1265 pci_write_config_word(dev, 0xF2, val & (~0x8)); 1266 pci_read_config_word(dev, 0xF2, &val); 1267 if (val & 0x8) 1268 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val); 1269 else 1270 dev_info(&dev->dev, "Enabled i801 SMBus device\n"); 1271 } 1272 } 1273 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1274 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1275 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1276 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1277 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1278 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1279 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1280 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1281 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1282 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1283 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1284 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1285 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1286 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1287 1288 /* It appears we just have one such device. If not, we have a warning */ 1289 static void __iomem *asus_rcba_base; 1290 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev) 1291 { 1292 u32 rcba; 1293 1294 if (likely(!asus_hides_smbus)) 1295 return; 1296 WARN_ON(asus_rcba_base); 1297 1298 pci_read_config_dword(dev, 0xF0, &rcba); 1299 /* use bits 31:14, 16 kB aligned */ 1300 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); 1301 if (asus_rcba_base == NULL) 1302 return; 1303 } 1304 1305 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev) 1306 { 1307 u32 val; 1308 1309 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1310 return; 1311 /* read the Function Disable register, dword mode only */ 1312 val = readl(asus_rcba_base + 0x3418); 1313 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */ 1314 } 1315 1316 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev) 1317 { 1318 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1319 return; 1320 iounmap(asus_rcba_base); 1321 asus_rcba_base = NULL; 1322 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n"); 1323 } 1324 1325 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev) 1326 { 1327 asus_hides_smbus_lpc_ich6_suspend(dev); 1328 asus_hides_smbus_lpc_ich6_resume_early(dev); 1329 asus_hides_smbus_lpc_ich6_resume(dev); 1330 } 1331 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6); 1332 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend); 1333 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume); 1334 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early); 1335 1336 /* 1337 * SiS 96x south bridge: BIOS typically hides SMBus device... 1338 */ 1339 static void quirk_sis_96x_smbus(struct pci_dev *dev) 1340 { 1341 u8 val = 0; 1342 pci_read_config_byte(dev, 0x77, &val); 1343 if (val & 0x10) { 1344 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n"); 1345 pci_write_config_byte(dev, 0x77, val & ~0x10); 1346 } 1347 } 1348 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1349 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1350 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1351 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1352 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1353 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1354 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1355 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1356 1357 /* 1358 * ... This is further complicated by the fact that some SiS96x south 1359 * bridges pretend to be 85C503/5513 instead. In that case see if we 1360 * spotted a compatible north bridge to make sure. 1361 * (pci_find_device doesn't work yet) 1362 * 1363 * We can also enable the sis96x bit in the discovery register.. 1364 */ 1365 #define SIS_DETECT_REGISTER 0x40 1366 1367 static void quirk_sis_503(struct pci_dev *dev) 1368 { 1369 u8 reg; 1370 u16 devid; 1371 1372 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®); 1373 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6)); 1374 pci_read_config_word(dev, PCI_DEVICE_ID, &devid); 1375 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) { 1376 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg); 1377 return; 1378 } 1379 1380 /* 1381 * Ok, it now shows up as a 96x.. run the 96x quirk by 1382 * hand in case it has already been processed. 1383 * (depends on link order, which is apparently not guaranteed) 1384 */ 1385 dev->device = devid; 1386 quirk_sis_96x_smbus(dev); 1387 } 1388 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1389 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1390 1391 1392 /* 1393 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller 1394 * and MC97 modem controller are disabled when a second PCI soundcard is 1395 * present. This patch, tweaking the VT8237 ISA bridge, enables them. 1396 * -- bjd 1397 */ 1398 static void asus_hides_ac97_lpc(struct pci_dev *dev) 1399 { 1400 u8 val; 1401 int asus_hides_ac97 = 0; 1402 1403 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1404 if (dev->device == PCI_DEVICE_ID_VIA_8237) 1405 asus_hides_ac97 = 1; 1406 } 1407 1408 if (!asus_hides_ac97) 1409 return; 1410 1411 pci_read_config_byte(dev, 0x50, &val); 1412 if (val & 0xc0) { 1413 pci_write_config_byte(dev, 0x50, val & (~0xc0)); 1414 pci_read_config_byte(dev, 0x50, &val); 1415 if (val & 0xc0) 1416 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val); 1417 else 1418 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n"); 1419 } 1420 } 1421 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1422 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1423 1424 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) 1425 1426 /* 1427 * If we are using libata we can drive this chip properly but must 1428 * do this early on to make the additional device appear during 1429 * the PCI scanning. 1430 */ 1431 static void quirk_jmicron_ata(struct pci_dev *pdev) 1432 { 1433 u32 conf1, conf5, class; 1434 u8 hdr; 1435 1436 /* Only poke fn 0 */ 1437 if (PCI_FUNC(pdev->devfn)) 1438 return; 1439 1440 pci_read_config_dword(pdev, 0x40, &conf1); 1441 pci_read_config_dword(pdev, 0x80, &conf5); 1442 1443 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */ 1444 conf5 &= ~(1 << 24); /* Clear bit 24 */ 1445 1446 switch (pdev->device) { 1447 case PCI_DEVICE_ID_JMICRON_JMB360: 1448 /* The controller should be in single function ahci mode */ 1449 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */ 1450 break; 1451 1452 case PCI_DEVICE_ID_JMICRON_JMB365: 1453 case PCI_DEVICE_ID_JMICRON_JMB366: 1454 /* Redirect IDE second PATA port to the right spot */ 1455 conf5 |= (1 << 24); 1456 /* Fall through */ 1457 case PCI_DEVICE_ID_JMICRON_JMB361: 1458 case PCI_DEVICE_ID_JMICRON_JMB363: 1459 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */ 1460 /* Set the class codes correctly and then direct IDE 0 */ 1461 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */ 1462 break; 1463 1464 case PCI_DEVICE_ID_JMICRON_JMB368: 1465 /* The controller should be in single function IDE mode */ 1466 conf1 |= 0x00C00000; /* Set 22, 23 */ 1467 break; 1468 } 1469 1470 pci_write_config_dword(pdev, 0x40, conf1); 1471 pci_write_config_dword(pdev, 0x80, conf5); 1472 1473 /* Update pdev accordingly */ 1474 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr); 1475 pdev->hdr_type = hdr & 0x7f; 1476 pdev->multifunction = !!(hdr & 0x80); 1477 1478 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class); 1479 pdev->class = class >> 8; 1480 } 1481 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1482 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1483 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1484 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1485 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1486 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1487 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1488 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1489 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1490 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1491 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1492 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1493 1494 #endif 1495 1496 #ifdef CONFIG_X86_IO_APIC 1497 static void __init quirk_alder_ioapic(struct pci_dev *pdev) 1498 { 1499 int i; 1500 1501 if ((pdev->class >> 8) != 0xff00) 1502 return; 1503 1504 /* the first BAR is the location of the IO APIC...we must 1505 * not touch this (and it's already covered by the fixmap), so 1506 * forcibly insert it into the resource tree */ 1507 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0)) 1508 insert_resource(&iomem_resource, &pdev->resource[0]); 1509 1510 /* The next five BARs all seem to be rubbish, so just clean 1511 * them out */ 1512 for (i=1; i < 6; i++) { 1513 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i])); 1514 } 1515 1516 } 1517 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic); 1518 #endif 1519 1520 static void __devinit quirk_pcie_mch(struct pci_dev *pdev) 1521 { 1522 pci_msi_off(pdev); 1523 pdev->no_msi = 1; 1524 } 1525 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch); 1526 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch); 1527 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch); 1528 1529 1530 /* 1531 * It's possible for the MSI to get corrupted if shpc and acpi 1532 * are used together on certain PXH-based systems. 1533 */ 1534 static void __devinit quirk_pcie_pxh(struct pci_dev *dev) 1535 { 1536 pci_msi_off(dev); 1537 dev->no_msi = 1; 1538 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n"); 1539 } 1540 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); 1541 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); 1542 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh); 1543 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh); 1544 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh); 1545 1546 /* 1547 * Some Intel PCI Express chipsets have trouble with downstream 1548 * device power management. 1549 */ 1550 static void quirk_intel_pcie_pm(struct pci_dev * dev) 1551 { 1552 pci_pm_d3_delay = 120; 1553 dev->no_d1d2 = 1; 1554 } 1555 1556 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm); 1557 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm); 1558 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm); 1559 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm); 1560 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm); 1561 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm); 1562 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm); 1563 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm); 1564 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm); 1565 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm); 1566 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm); 1567 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm); 1568 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm); 1569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm); 1570 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm); 1571 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm); 1572 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm); 1573 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm); 1574 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm); 1575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm); 1576 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm); 1577 1578 #ifdef CONFIG_X86_IO_APIC 1579 /* 1580 * Boot interrupts on some chipsets cannot be turned off. For these chipsets, 1581 * remap the original interrupt in the linux kernel to the boot interrupt, so 1582 * that a PCI device's interrupt handler is installed on the boot interrupt 1583 * line instead. 1584 */ 1585 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev) 1586 { 1587 if (noioapicquirk || noioapicreroute) 1588 return; 1589 1590 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT; 1591 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n", 1592 dev->vendor, dev->device); 1593 } 1594 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 1595 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 1596 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 1597 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 1598 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 1599 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 1600 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 1601 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 1602 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 1603 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 1604 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 1605 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 1606 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 1607 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 1608 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 1609 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 1610 1611 /* 1612 * On some chipsets we can disable the generation of legacy INTx boot 1613 * interrupts. 1614 */ 1615 1616 /* 1617 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no 1618 * 300641-004US, section 5.7.3. 1619 */ 1620 #define INTEL_6300_IOAPIC_ABAR 0x40 1621 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14) 1622 1623 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev) 1624 { 1625 u16 pci_config_word; 1626 1627 if (noioapicquirk) 1628 return; 1629 1630 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word); 1631 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ; 1632 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word); 1633 1634 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1635 dev->vendor, dev->device); 1636 } 1637 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); 1638 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); 1639 1640 /* 1641 * disable boot interrupts on HT-1000 1642 */ 1643 #define BC_HT1000_FEATURE_REG 0x64 1644 #define BC_HT1000_PIC_REGS_ENABLE (1<<0) 1645 #define BC_HT1000_MAP_IDX 0xC00 1646 #define BC_HT1000_MAP_DATA 0xC01 1647 1648 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev) 1649 { 1650 u32 pci_config_dword; 1651 u8 irq; 1652 1653 if (noioapicquirk) 1654 return; 1655 1656 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword); 1657 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword | 1658 BC_HT1000_PIC_REGS_ENABLE); 1659 1660 for (irq = 0x10; irq < 0x10 + 32; irq++) { 1661 outb(irq, BC_HT1000_MAP_IDX); 1662 outb(0x00, BC_HT1000_MAP_DATA); 1663 } 1664 1665 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword); 1666 1667 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1668 dev->vendor, dev->device); 1669 } 1670 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 1671 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 1672 1673 /* 1674 * disable boot interrupts on AMD and ATI chipsets 1675 */ 1676 /* 1677 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131 1678 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode 1679 * (due to an erratum). 1680 */ 1681 #define AMD_813X_MISC 0x40 1682 #define AMD_813X_NOIOAMODE (1<<0) 1683 #define AMD_813X_REV_B1 0x12 1684 #define AMD_813X_REV_B2 0x13 1685 1686 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev) 1687 { 1688 u32 pci_config_dword; 1689 1690 if (noioapicquirk) 1691 return; 1692 if ((dev->revision == AMD_813X_REV_B1) || 1693 (dev->revision == AMD_813X_REV_B2)) 1694 return; 1695 1696 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword); 1697 pci_config_dword &= ~AMD_813X_NOIOAMODE; 1698 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword); 1699 1700 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1701 dev->vendor, dev->device); 1702 } 1703 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1704 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1705 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1706 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1707 1708 #define AMD_8111_PCI_IRQ_ROUTING 0x56 1709 1710 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev) 1711 { 1712 u16 pci_config_word; 1713 1714 if (noioapicquirk) 1715 return; 1716 1717 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word); 1718 if (!pci_config_word) { 1719 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] " 1720 "already disabled\n", dev->vendor, dev->device); 1721 return; 1722 } 1723 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0); 1724 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1725 dev->vendor, dev->device); 1726 } 1727 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 1728 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 1729 #endif /* CONFIG_X86_IO_APIC */ 1730 1731 /* 1732 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size 1733 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes. 1734 * Re-allocate the region if needed... 1735 */ 1736 static void __init quirk_tc86c001_ide(struct pci_dev *dev) 1737 { 1738 struct resource *r = &dev->resource[0]; 1739 1740 if (r->start & 0x8) { 1741 r->start = 0; 1742 r->end = 0xf; 1743 } 1744 } 1745 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2, 1746 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE, 1747 quirk_tc86c001_ide); 1748 1749 static void __devinit quirk_netmos(struct pci_dev *dev) 1750 { 1751 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4; 1752 unsigned int num_serial = dev->subsystem_device & 0xf; 1753 1754 /* 1755 * These Netmos parts are multiport serial devices with optional 1756 * parallel ports. Even when parallel ports are present, they 1757 * are identified as class SERIAL, which means the serial driver 1758 * will claim them. To prevent this, mark them as class OTHER. 1759 * These combo devices should be claimed by parport_serial. 1760 * 1761 * The subdevice ID is of the form 0x00PS, where <P> is the number 1762 * of parallel ports and <S> is the number of serial ports. 1763 */ 1764 switch (dev->device) { 1765 case PCI_DEVICE_ID_NETMOS_9835: 1766 /* Well, this rule doesn't hold for the following 9835 device */ 1767 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM && 1768 dev->subsystem_device == 0x0299) 1769 return; 1770 case PCI_DEVICE_ID_NETMOS_9735: 1771 case PCI_DEVICE_ID_NETMOS_9745: 1772 case PCI_DEVICE_ID_NETMOS_9845: 1773 case PCI_DEVICE_ID_NETMOS_9855: 1774 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL && 1775 num_parallel) { 1776 dev_info(&dev->dev, "Netmos %04x (%u parallel, " 1777 "%u serial); changing class SERIAL to OTHER " 1778 "(use parport_serial)\n", 1779 dev->device, num_parallel, num_serial); 1780 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) | 1781 (dev->class & 0xff); 1782 } 1783 } 1784 } 1785 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos); 1786 1787 static void __devinit quirk_e100_interrupt(struct pci_dev *dev) 1788 { 1789 u16 command, pmcsr; 1790 u8 __iomem *csr; 1791 u8 cmd_hi; 1792 int pm; 1793 1794 switch (dev->device) { 1795 /* PCI IDs taken from drivers/net/e100.c */ 1796 case 0x1029: 1797 case 0x1030 ... 0x1034: 1798 case 0x1038 ... 0x103E: 1799 case 0x1050 ... 0x1057: 1800 case 0x1059: 1801 case 0x1064 ... 0x106B: 1802 case 0x1091 ... 0x1095: 1803 case 0x1209: 1804 case 0x1229: 1805 case 0x2449: 1806 case 0x2459: 1807 case 0x245D: 1808 case 0x27DC: 1809 break; 1810 default: 1811 return; 1812 } 1813 1814 /* 1815 * Some firmware hands off the e100 with interrupts enabled, 1816 * which can cause a flood of interrupts if packets are 1817 * received before the driver attaches to the device. So 1818 * disable all e100 interrupts here. The driver will 1819 * re-enable them when it's ready. 1820 */ 1821 pci_read_config_word(dev, PCI_COMMAND, &command); 1822 1823 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0)) 1824 return; 1825 1826 /* 1827 * Check that the device is in the D0 power state. If it's not, 1828 * there is no point to look any further. 1829 */ 1830 pm = pci_find_capability(dev, PCI_CAP_ID_PM); 1831 if (pm) { 1832 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr); 1833 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) 1834 return; 1835 } 1836 1837 /* Convert from PCI bus to resource space. */ 1838 csr = ioremap(pci_resource_start(dev, 0), 8); 1839 if (!csr) { 1840 dev_warn(&dev->dev, "Can't map e100 registers\n"); 1841 return; 1842 } 1843 1844 cmd_hi = readb(csr + 3); 1845 if (cmd_hi == 0) { 1846 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; " 1847 "disabling\n"); 1848 writeb(1, csr + 3); 1849 } 1850 1851 iounmap(csr); 1852 } 1853 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt); 1854 1855 /* 1856 * The 82575 and 82598 may experience data corruption issues when transitioning 1857 * out of L0S. To prevent this we need to disable L0S on the pci-e link 1858 */ 1859 static void __devinit quirk_disable_aspm_l0s(struct pci_dev *dev) 1860 { 1861 dev_info(&dev->dev, "Disabling L0s\n"); 1862 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S); 1863 } 1864 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s); 1865 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s); 1866 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s); 1867 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s); 1868 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s); 1869 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s); 1870 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s); 1871 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s); 1872 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s); 1873 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s); 1874 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s); 1875 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s); 1876 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s); 1877 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s); 1878 1879 static void __devinit fixup_rev1_53c810(struct pci_dev* dev) 1880 { 1881 /* rev 1 ncr53c810 chips don't set the class at all which means 1882 * they don't get their resources remapped. Fix that here. 1883 */ 1884 1885 if (dev->class == PCI_CLASS_NOT_DEFINED) { 1886 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n"); 1887 dev->class = PCI_CLASS_STORAGE_SCSI; 1888 } 1889 } 1890 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); 1891 1892 /* Enable 1k I/O space granularity on the Intel P64H2 */ 1893 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev) 1894 { 1895 u16 en1k; 1896 u8 io_base_lo, io_limit_lo; 1897 unsigned long base, limit; 1898 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES; 1899 1900 pci_read_config_word(dev, 0x40, &en1k); 1901 1902 if (en1k & 0x200) { 1903 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n"); 1904 1905 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo); 1906 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo); 1907 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; 1908 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; 1909 1910 if (base <= limit) { 1911 res->start = base; 1912 res->end = limit + 0x3ff; 1913 } 1914 } 1915 } 1916 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io); 1917 1918 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2 1919 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge() 1920 * in drivers/pci/setup-bus.c 1921 */ 1922 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev) 1923 { 1924 u16 en1k, iobl_adr, iobl_adr_1k; 1925 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES; 1926 1927 pci_read_config_word(dev, 0x40, &en1k); 1928 1929 if (en1k & 0x200) { 1930 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr); 1931 1932 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00); 1933 1934 if (iobl_adr != iobl_adr_1k) { 1935 dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n", 1936 iobl_adr,iobl_adr_1k); 1937 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k); 1938 } 1939 } 1940 } 1941 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl); 1942 1943 /* Under some circumstances, AER is not linked with extended capabilities. 1944 * Force it to be linked by setting the corresponding control bit in the 1945 * config space. 1946 */ 1947 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev) 1948 { 1949 uint8_t b; 1950 if (pci_read_config_byte(dev, 0xf41, &b) == 0) { 1951 if (!(b & 0x20)) { 1952 pci_write_config_byte(dev, 0xf41, b | 0x20); 1953 dev_info(&dev->dev, 1954 "Linking AER extended capability\n"); 1955 } 1956 } 1957 } 1958 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 1959 quirk_nvidia_ck804_pcie_aer_ext_cap); 1960 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 1961 quirk_nvidia_ck804_pcie_aer_ext_cap); 1962 1963 static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev) 1964 { 1965 /* 1966 * Disable PCI Bus Parking and PCI Master read caching on CX700 1967 * which causes unspecified timing errors with a VT6212L on the PCI 1968 * bus leading to USB2.0 packet loss. The defaults are that these 1969 * features are turned off but some BIOSes turn them on. 1970 */ 1971 1972 uint8_t b; 1973 if (pci_read_config_byte(dev, 0x76, &b) == 0) { 1974 if (b & 0x40) { 1975 /* Turn off PCI Bus Parking */ 1976 pci_write_config_byte(dev, 0x76, b ^ 0x40); 1977 1978 dev_info(&dev->dev, 1979 "Disabling VIA CX700 PCI parking\n"); 1980 } 1981 } 1982 1983 if (pci_read_config_byte(dev, 0x72, &b) == 0) { 1984 if (b != 0) { 1985 /* Turn off PCI Master read caching */ 1986 pci_write_config_byte(dev, 0x72, 0x0); 1987 1988 /* Set PCI Master Bus time-out to "1x16 PCLK" */ 1989 pci_write_config_byte(dev, 0x75, 0x1); 1990 1991 /* Disable "Read FIFO Timer" */ 1992 pci_write_config_byte(dev, 0x77, 0x0); 1993 1994 dev_info(&dev->dev, 1995 "Disabling VIA CX700 PCI caching\n"); 1996 } 1997 } 1998 } 1999 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching); 2000 2001 /* 2002 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the 2003 * VPD end tag will hang the device. This problem was initially 2004 * observed when a vpd entry was created in sysfs 2005 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry 2006 * will dump 32k of data. Reading a full 32k will cause an access 2007 * beyond the VPD end tag causing the device to hang. Once the device 2008 * is hung, the bnx2 driver will not be able to reset the device. 2009 * We believe that it is legal to read beyond the end tag and 2010 * therefore the solution is to limit the read/write length. 2011 */ 2012 static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev) 2013 { 2014 /* 2015 * Only disable the VPD capability for 5706, 5706S, 5708, 2016 * 5708S and 5709 rev. A 2017 */ 2018 if ((dev->device == PCI_DEVICE_ID_NX2_5706) || 2019 (dev->device == PCI_DEVICE_ID_NX2_5706S) || 2020 (dev->device == PCI_DEVICE_ID_NX2_5708) || 2021 (dev->device == PCI_DEVICE_ID_NX2_5708S) || 2022 ((dev->device == PCI_DEVICE_ID_NX2_5709) && 2023 (dev->revision & 0xf0) == 0x0)) { 2024 if (dev->vpd) 2025 dev->vpd->len = 0x80; 2026 } 2027 } 2028 2029 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2030 PCI_DEVICE_ID_NX2_5706, 2031 quirk_brcm_570x_limit_vpd); 2032 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2033 PCI_DEVICE_ID_NX2_5706S, 2034 quirk_brcm_570x_limit_vpd); 2035 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2036 PCI_DEVICE_ID_NX2_5708, 2037 quirk_brcm_570x_limit_vpd); 2038 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2039 PCI_DEVICE_ID_NX2_5708S, 2040 quirk_brcm_570x_limit_vpd); 2041 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2042 PCI_DEVICE_ID_NX2_5709, 2043 quirk_brcm_570x_limit_vpd); 2044 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2045 PCI_DEVICE_ID_NX2_5709S, 2046 quirk_brcm_570x_limit_vpd); 2047 2048 /* Originally in EDAC sources for i82875P: 2049 * Intel tells BIOS developers to hide device 6 which 2050 * configures the overflow device access containing 2051 * the DRBs - this is where we expose device 6. 2052 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm 2053 */ 2054 static void __devinit quirk_unhide_mch_dev6(struct pci_dev *dev) 2055 { 2056 u8 reg; 2057 2058 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) { 2059 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n"); 2060 pci_write_config_byte(dev, 0xF4, reg | 0x02); 2061 } 2062 } 2063 2064 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, 2065 quirk_unhide_mch_dev6); 2066 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, 2067 quirk_unhide_mch_dev6); 2068 2069 2070 #ifdef CONFIG_PCI_MSI 2071 /* Some chipsets do not support MSI. We cannot easily rely on setting 2072 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually 2073 * some other busses controlled by the chipset even if Linux is not 2074 * aware of it. Instead of setting the flag on all busses in the 2075 * machine, simply disable MSI globally. 2076 */ 2077 static void __init quirk_disable_all_msi(struct pci_dev *dev) 2078 { 2079 pci_no_msi(); 2080 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n"); 2081 } 2082 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi); 2083 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi); 2084 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi); 2085 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi); 2086 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi); 2087 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); 2088 2089 /* Disable MSI on chipsets that are known to not support it */ 2090 static void __devinit quirk_disable_msi(struct pci_dev *dev) 2091 { 2092 if (dev->subordinate) { 2093 dev_warn(&dev->dev, "MSI quirk detected; " 2094 "subordinate MSI disabled\n"); 2095 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2096 } 2097 } 2098 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); 2099 2100 /* Go through the list of Hypertransport capabilities and 2101 * return 1 if a HT MSI capability is found and enabled */ 2102 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev) 2103 { 2104 int pos, ttl = 48; 2105 2106 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2107 while (pos && ttl--) { 2108 u8 flags; 2109 2110 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2111 &flags) == 0) 2112 { 2113 dev_info(&dev->dev, "Found %s HT MSI Mapping\n", 2114 flags & HT_MSI_FLAGS_ENABLE ? 2115 "enabled" : "disabled"); 2116 return (flags & HT_MSI_FLAGS_ENABLE) != 0; 2117 } 2118 2119 pos = pci_find_next_ht_capability(dev, pos, 2120 HT_CAPTYPE_MSI_MAPPING); 2121 } 2122 return 0; 2123 } 2124 2125 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */ 2126 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev) 2127 { 2128 if (dev->subordinate && !msi_ht_cap_enabled(dev)) { 2129 dev_warn(&dev->dev, "MSI quirk detected; " 2130 "subordinate MSI disabled\n"); 2131 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2132 } 2133 } 2134 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE, 2135 quirk_msi_ht_cap); 2136 2137 /* The nVidia CK804 chipset may have 2 HT MSI mappings. 2138 * MSI are supported if the MSI capability set in any of these mappings. 2139 */ 2140 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev) 2141 { 2142 struct pci_dev *pdev; 2143 2144 if (!dev->subordinate) 2145 return; 2146 2147 /* check HT MSI cap on this chipset and the root one. 2148 * a single one having MSI is enough to be sure that MSI are supported. 2149 */ 2150 pdev = pci_get_slot(dev->bus, 0); 2151 if (!pdev) 2152 return; 2153 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) { 2154 dev_warn(&dev->dev, "MSI quirk detected; " 2155 "subordinate MSI disabled\n"); 2156 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2157 } 2158 pci_dev_put(pdev); 2159 } 2160 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2161 quirk_nvidia_ck804_msi_ht_cap); 2162 2163 /* Force enable MSI mapping capability on HT bridges */ 2164 static void __devinit ht_enable_msi_mapping(struct pci_dev *dev) 2165 { 2166 int pos, ttl = 48; 2167 2168 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2169 while (pos && ttl--) { 2170 u8 flags; 2171 2172 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2173 &flags) == 0) { 2174 dev_info(&dev->dev, "Enabling HT MSI Mapping\n"); 2175 2176 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2177 flags | HT_MSI_FLAGS_ENABLE); 2178 } 2179 pos = pci_find_next_ht_capability(dev, pos, 2180 HT_CAPTYPE_MSI_MAPPING); 2181 } 2182 } 2183 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, 2184 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB, 2185 ht_enable_msi_mapping); 2186 2187 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, 2188 ht_enable_msi_mapping); 2189 2190 /* The P5N32-SLI Premium motherboard from Asus has a problem with msi 2191 * for the MCP55 NIC. It is not yet determined whether the msi problem 2192 * also affects other devices. As for now, turn off msi for this device. 2193 */ 2194 static void __devinit nvenet_msi_disable(struct pci_dev *dev) 2195 { 2196 if (dmi_name_in_vendors("P5N32-SLI PREMIUM")) { 2197 dev_info(&dev->dev, 2198 "Disabling msi for MCP55 NIC on P5N32-SLI Premium\n"); 2199 dev->no_msi = 1; 2200 } 2201 } 2202 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2203 PCI_DEVICE_ID_NVIDIA_NVENET_15, 2204 nvenet_msi_disable); 2205 2206 static int __devinit ht_check_msi_mapping(struct pci_dev *dev) 2207 { 2208 int pos, ttl = 48; 2209 int found = 0; 2210 2211 /* check if there is HT MSI cap or enabled on this device */ 2212 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2213 while (pos && ttl--) { 2214 u8 flags; 2215 2216 if (found < 1) 2217 found = 1; 2218 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2219 &flags) == 0) { 2220 if (flags & HT_MSI_FLAGS_ENABLE) { 2221 if (found < 2) { 2222 found = 2; 2223 break; 2224 } 2225 } 2226 } 2227 pos = pci_find_next_ht_capability(dev, pos, 2228 HT_CAPTYPE_MSI_MAPPING); 2229 } 2230 2231 return found; 2232 } 2233 2234 static int __devinit host_bridge_with_leaf(struct pci_dev *host_bridge) 2235 { 2236 struct pci_dev *dev; 2237 int pos; 2238 int i, dev_no; 2239 int found = 0; 2240 2241 dev_no = host_bridge->devfn >> 3; 2242 for (i = dev_no + 1; i < 0x20; i++) { 2243 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0)); 2244 if (!dev) 2245 continue; 2246 2247 /* found next host bridge ?*/ 2248 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2249 if (pos != 0) { 2250 pci_dev_put(dev); 2251 break; 2252 } 2253 2254 if (ht_check_msi_mapping(dev)) { 2255 found = 1; 2256 pci_dev_put(dev); 2257 break; 2258 } 2259 pci_dev_put(dev); 2260 } 2261 2262 return found; 2263 } 2264 2265 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */ 2266 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */ 2267 2268 static int __devinit is_end_of_ht_chain(struct pci_dev *dev) 2269 { 2270 int pos, ctrl_off; 2271 int end = 0; 2272 u16 flags, ctrl; 2273 2274 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2275 2276 if (!pos) 2277 goto out; 2278 2279 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags); 2280 2281 ctrl_off = ((flags >> 10) & 1) ? 2282 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1; 2283 pci_read_config_word(dev, pos + ctrl_off, &ctrl); 2284 2285 if (ctrl & (1 << 6)) 2286 end = 1; 2287 2288 out: 2289 return end; 2290 } 2291 2292 static void __devinit nv_ht_enable_msi_mapping(struct pci_dev *dev) 2293 { 2294 struct pci_dev *host_bridge; 2295 int pos; 2296 int i, dev_no; 2297 int found = 0; 2298 2299 dev_no = dev->devfn >> 3; 2300 for (i = dev_no; i >= 0; i--) { 2301 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0)); 2302 if (!host_bridge) 2303 continue; 2304 2305 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2306 if (pos != 0) { 2307 found = 1; 2308 break; 2309 } 2310 pci_dev_put(host_bridge); 2311 } 2312 2313 if (!found) 2314 return; 2315 2316 /* don't enable end_device/host_bridge with leaf directly here */ 2317 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) && 2318 host_bridge_with_leaf(host_bridge)) 2319 goto out; 2320 2321 /* root did that ! */ 2322 if (msi_ht_cap_enabled(host_bridge)) 2323 goto out; 2324 2325 ht_enable_msi_mapping(dev); 2326 2327 out: 2328 pci_dev_put(host_bridge); 2329 } 2330 2331 static void __devinit ht_disable_msi_mapping(struct pci_dev *dev) 2332 { 2333 int pos, ttl = 48; 2334 2335 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2336 while (pos && ttl--) { 2337 u8 flags; 2338 2339 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2340 &flags) == 0) { 2341 dev_info(&dev->dev, "Disabling HT MSI Mapping\n"); 2342 2343 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2344 flags & ~HT_MSI_FLAGS_ENABLE); 2345 } 2346 pos = pci_find_next_ht_capability(dev, pos, 2347 HT_CAPTYPE_MSI_MAPPING); 2348 } 2349 } 2350 2351 static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all) 2352 { 2353 struct pci_dev *host_bridge; 2354 int pos; 2355 int found; 2356 2357 /* check if there is HT MSI cap or enabled on this device */ 2358 found = ht_check_msi_mapping(dev); 2359 2360 /* no HT MSI CAP */ 2361 if (found == 0) 2362 return; 2363 2364 /* 2365 * HT MSI mapping should be disabled on devices that are below 2366 * a non-Hypertransport host bridge. Locate the host bridge... 2367 */ 2368 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); 2369 if (host_bridge == NULL) { 2370 dev_warn(&dev->dev, 2371 "nv_msi_ht_cap_quirk didn't locate host bridge\n"); 2372 return; 2373 } 2374 2375 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2376 if (pos != 0) { 2377 /* Host bridge is to HT */ 2378 if (found == 1) { 2379 /* it is not enabled, try to enable it */ 2380 if (all) 2381 ht_enable_msi_mapping(dev); 2382 else 2383 nv_ht_enable_msi_mapping(dev); 2384 } 2385 return; 2386 } 2387 2388 /* HT MSI is not enabled */ 2389 if (found == 1) 2390 return; 2391 2392 /* Host bridge is not to HT, disable HT MSI mapping on this device */ 2393 ht_disable_msi_mapping(dev); 2394 } 2395 2396 static void __devinit nv_msi_ht_cap_quirk_all(struct pci_dev *dev) 2397 { 2398 return __nv_msi_ht_cap_quirk(dev, 1); 2399 } 2400 2401 static void __devinit nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev) 2402 { 2403 return __nv_msi_ht_cap_quirk(dev, 0); 2404 } 2405 2406 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 2407 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 2408 2409 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 2410 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 2411 2412 static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev) 2413 { 2414 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 2415 } 2416 static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev) 2417 { 2418 struct pci_dev *p; 2419 2420 /* SB700 MSI issue will be fixed at HW level from revision A21, 2421 * we need check PCI REVISION ID of SMBus controller to get SB700 2422 * revision. 2423 */ 2424 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS, 2425 NULL); 2426 if (!p) 2427 return; 2428 2429 if ((p->revision < 0x3B) && (p->revision >= 0x30)) 2430 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 2431 pci_dev_put(p); 2432 } 2433 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2434 PCI_DEVICE_ID_TIGON3_5780, 2435 quirk_msi_intx_disable_bug); 2436 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2437 PCI_DEVICE_ID_TIGON3_5780S, 2438 quirk_msi_intx_disable_bug); 2439 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2440 PCI_DEVICE_ID_TIGON3_5714, 2441 quirk_msi_intx_disable_bug); 2442 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2443 PCI_DEVICE_ID_TIGON3_5714S, 2444 quirk_msi_intx_disable_bug); 2445 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2446 PCI_DEVICE_ID_TIGON3_5715, 2447 quirk_msi_intx_disable_bug); 2448 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2449 PCI_DEVICE_ID_TIGON3_5715S, 2450 quirk_msi_intx_disable_bug); 2451 2452 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390, 2453 quirk_msi_intx_disable_ati_bug); 2454 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391, 2455 quirk_msi_intx_disable_ati_bug); 2456 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392, 2457 quirk_msi_intx_disable_ati_bug); 2458 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393, 2459 quirk_msi_intx_disable_ati_bug); 2460 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394, 2461 quirk_msi_intx_disable_ati_bug); 2462 2463 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373, 2464 quirk_msi_intx_disable_bug); 2465 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374, 2466 quirk_msi_intx_disable_bug); 2467 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375, 2468 quirk_msi_intx_disable_bug); 2469 2470 #endif /* CONFIG_PCI_MSI */ 2471 2472 #ifdef CONFIG_PCI_IOV 2473 2474 /* 2475 * For Intel 82576 SR-IOV NIC, if BIOS doesn't allocate resources for the 2476 * SR-IOV BARs, zero the Flash BAR and program the SR-IOV BARs to use the 2477 * old Flash Memory Space. 2478 */ 2479 static void __devinit quirk_i82576_sriov(struct pci_dev *dev) 2480 { 2481 int pos, flags; 2482 u32 bar, start, size; 2483 2484 if (PAGE_SIZE > 0x10000) 2485 return; 2486 2487 flags = pci_resource_flags(dev, 0); 2488 if ((flags & PCI_BASE_ADDRESS_SPACE) != 2489 PCI_BASE_ADDRESS_SPACE_MEMORY || 2490 (flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) != 2491 PCI_BASE_ADDRESS_MEM_TYPE_32) 2492 return; 2493 2494 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV); 2495 if (!pos) 2496 return; 2497 2498 pci_read_config_dword(dev, pos + PCI_SRIOV_BAR, &bar); 2499 if (bar & PCI_BASE_ADDRESS_MEM_MASK) 2500 return; 2501 2502 start = pci_resource_start(dev, 1); 2503 size = pci_resource_len(dev, 1); 2504 if (!start || size != 0x400000 || start & (size - 1)) 2505 return; 2506 2507 pci_resource_flags(dev, 1) = 0; 2508 pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0); 2509 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR, start); 2510 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR + 12, start + size / 2); 2511 2512 dev_info(&dev->dev, "use Flash Memory Space for SR-IOV BARs\n"); 2513 } 2514 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10c9, quirk_i82576_sriov); 2515 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e6, quirk_i82576_sriov); 2516 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e7, quirk_i82576_sriov); 2517 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e8, quirk_i82576_sriov); 2518 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150a, quirk_i82576_sriov); 2519 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150d, quirk_i82576_sriov); 2520 2521 #endif /* CONFIG_PCI_IOV */ 2522 2523 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, 2524 struct pci_fixup *end) 2525 { 2526 while (f < end) { 2527 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) && 2528 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) { 2529 dev_dbg(&dev->dev, "calling %pF\n", f->hook); 2530 f->hook(dev); 2531 } 2532 f++; 2533 } 2534 } 2535 2536 extern struct pci_fixup __start_pci_fixups_early[]; 2537 extern struct pci_fixup __end_pci_fixups_early[]; 2538 extern struct pci_fixup __start_pci_fixups_header[]; 2539 extern struct pci_fixup __end_pci_fixups_header[]; 2540 extern struct pci_fixup __start_pci_fixups_final[]; 2541 extern struct pci_fixup __end_pci_fixups_final[]; 2542 extern struct pci_fixup __start_pci_fixups_enable[]; 2543 extern struct pci_fixup __end_pci_fixups_enable[]; 2544 extern struct pci_fixup __start_pci_fixups_resume[]; 2545 extern struct pci_fixup __end_pci_fixups_resume[]; 2546 extern struct pci_fixup __start_pci_fixups_resume_early[]; 2547 extern struct pci_fixup __end_pci_fixups_resume_early[]; 2548 extern struct pci_fixup __start_pci_fixups_suspend[]; 2549 extern struct pci_fixup __end_pci_fixups_suspend[]; 2550 2551 2552 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) 2553 { 2554 struct pci_fixup *start, *end; 2555 2556 switch(pass) { 2557 case pci_fixup_early: 2558 start = __start_pci_fixups_early; 2559 end = __end_pci_fixups_early; 2560 break; 2561 2562 case pci_fixup_header: 2563 start = __start_pci_fixups_header; 2564 end = __end_pci_fixups_header; 2565 break; 2566 2567 case pci_fixup_final: 2568 start = __start_pci_fixups_final; 2569 end = __end_pci_fixups_final; 2570 break; 2571 2572 case pci_fixup_enable: 2573 start = __start_pci_fixups_enable; 2574 end = __end_pci_fixups_enable; 2575 break; 2576 2577 case pci_fixup_resume: 2578 start = __start_pci_fixups_resume; 2579 end = __end_pci_fixups_resume; 2580 break; 2581 2582 case pci_fixup_resume_early: 2583 start = __start_pci_fixups_resume_early; 2584 end = __end_pci_fixups_resume_early; 2585 break; 2586 2587 case pci_fixup_suspend: 2588 start = __start_pci_fixups_suspend; 2589 end = __end_pci_fixups_suspend; 2590 break; 2591 2592 default: 2593 /* stupid compiler warning, you would think with an enum... */ 2594 return; 2595 } 2596 pci_do_fixups(dev, start, end); 2597 } 2598 2599 static int __init pci_apply_final_quirks(void) 2600 { 2601 struct pci_dev *dev = NULL; 2602 u8 cls = 0; 2603 u8 tmp; 2604 2605 if (pci_cache_line_size) 2606 printk(KERN_DEBUG "PCI: CLS %u bytes\n", 2607 pci_cache_line_size << 2); 2608 2609 while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { 2610 pci_fixup_device(pci_fixup_final, dev); 2611 /* 2612 * If arch hasn't set it explicitly yet, use the CLS 2613 * value shared by all PCI devices. If there's a 2614 * mismatch, fall back to the default value. 2615 */ 2616 if (!pci_cache_line_size) { 2617 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp); 2618 if (!cls) 2619 cls = tmp; 2620 if (!tmp || cls == tmp) 2621 continue; 2622 2623 printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), " 2624 "using %u bytes\n", cls << 2, tmp << 2, 2625 pci_dfl_cache_line_size << 2); 2626 pci_cache_line_size = pci_dfl_cache_line_size; 2627 } 2628 } 2629 if (!pci_cache_line_size) { 2630 printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n", 2631 cls << 2, pci_dfl_cache_line_size << 2); 2632 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size; 2633 } 2634 2635 return 0; 2636 } 2637 2638 fs_initcall_sync(pci_apply_final_quirks); 2639 2640 /* 2641 * Followings are device-specific reset methods which can be used to 2642 * reset a single function if other methods (e.g. FLR, PM D0->D3) are 2643 * not available. 2644 */ 2645 static int reset_intel_generic_dev(struct pci_dev *dev, int probe) 2646 { 2647 int pos; 2648 2649 /* only implement PCI_CLASS_SERIAL_USB at present */ 2650 if (dev->class == PCI_CLASS_SERIAL_USB) { 2651 pos = pci_find_capability(dev, PCI_CAP_ID_VNDR); 2652 if (!pos) 2653 return -ENOTTY; 2654 2655 if (probe) 2656 return 0; 2657 2658 pci_write_config_byte(dev, pos + 0x4, 1); 2659 msleep(100); 2660 2661 return 0; 2662 } else { 2663 return -ENOTTY; 2664 } 2665 } 2666 2667 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe) 2668 { 2669 int pos; 2670 2671 pos = pci_find_capability(dev, PCI_CAP_ID_EXP); 2672 if (!pos) 2673 return -ENOTTY; 2674 2675 if (probe) 2676 return 0; 2677 2678 pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, 2679 PCI_EXP_DEVCTL_BCR_FLR); 2680 msleep(100); 2681 2682 return 0; 2683 } 2684 2685 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed 2686 2687 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = { 2688 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF, 2689 reset_intel_82599_sfp_virtfn }, 2690 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, 2691 reset_intel_generic_dev }, 2692 { 0 } 2693 }; 2694 2695 int pci_dev_specific_reset(struct pci_dev *dev, int probe) 2696 { 2697 const struct pci_dev_reset_methods *i; 2698 2699 for (i = pci_dev_reset_methods; i->reset; i++) { 2700 if ((i->vendor == dev->vendor || 2701 i->vendor == (u16)PCI_ANY_ID) && 2702 (i->device == dev->device || 2703 i->device == (u16)PCI_ANY_ID)) 2704 return i->reset(dev, probe); 2705 } 2706 2707 return -ENOTTY; 2708 } 2709 2710 #else 2711 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {} 2712 int pci_dev_specific_reset(struct pci_dev *dev, int probe) { return -ENOTTY; } 2713 #endif 2714 EXPORT_SYMBOL(pci_fixup_device); 2715