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 int pcie_mch_quirk; 35 EXPORT_SYMBOL(pcie_mch_quirk); 36 37 #ifdef CONFIG_PCI_QUIRKS 38 /* 39 * This quirk function disables memory decoding and releases memory resources 40 * of the device specified by kernel's boot parameter 'pci=resource_alignment='. 41 * It also rounds up size to specified alignment. 42 * Later on, the kernel will assign page-aligned memory resource back 43 * to the device. 44 */ 45 static void __devinit quirk_resource_alignment(struct pci_dev *dev) 46 { 47 int i; 48 struct resource *r; 49 resource_size_t align, size; 50 u16 command; 51 52 if (!pci_is_reassigndev(dev)) 53 return; 54 55 if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL && 56 (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) { 57 dev_warn(&dev->dev, 58 "Can't reassign resources to host bridge.\n"); 59 return; 60 } 61 62 dev_info(&dev->dev, 63 "Disabling memory decoding and releasing memory resources.\n"); 64 pci_read_config_word(dev, PCI_COMMAND, &command); 65 command &= ~PCI_COMMAND_MEMORY; 66 pci_write_config_word(dev, PCI_COMMAND, command); 67 68 align = pci_specified_resource_alignment(dev); 69 for (i=0; i < PCI_BRIDGE_RESOURCES; i++) { 70 r = &dev->resource[i]; 71 if (!(r->flags & IORESOURCE_MEM)) 72 continue; 73 size = resource_size(r); 74 if (size < align) { 75 size = align; 76 dev_info(&dev->dev, 77 "Rounding up size of resource #%d to %#llx.\n", 78 i, (unsigned long long)size); 79 } 80 r->end = size - 1; 81 r->start = 0; 82 } 83 /* Need to disable bridge's resource window, 84 * to enable the kernel to reassign new resource 85 * window later on. 86 */ 87 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE && 88 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { 89 for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) { 90 r = &dev->resource[i]; 91 if (!(r->flags & IORESOURCE_MEM)) 92 continue; 93 r->end = resource_size(r) - 1; 94 r->start = 0; 95 } 96 pci_disable_bridge_window(dev); 97 } 98 } 99 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment); 100 101 /* The Mellanox Tavor device gives false positive parity errors 102 * Mark this device with a broken_parity_status, to allow 103 * PCI scanning code to "skip" this now blacklisted device. 104 */ 105 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev) 106 { 107 dev->broken_parity_status = 1; /* This device gives false positives */ 108 } 109 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor); 110 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor); 111 112 /* Deal with broken BIOS'es that neglect to enable passive release, 113 which can cause problems in combination with the 82441FX/PPro MTRRs */ 114 static void quirk_passive_release(struct pci_dev *dev) 115 { 116 struct pci_dev *d = NULL; 117 unsigned char dlc; 118 119 /* We have to make sure a particular bit is set in the PIIX3 120 ISA bridge, so we have to go out and find it. */ 121 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) { 122 pci_read_config_byte(d, 0x82, &dlc); 123 if (!(dlc & 1<<1)) { 124 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n"); 125 dlc |= 1<<1; 126 pci_write_config_byte(d, 0x82, dlc); 127 } 128 } 129 } 130 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 131 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 132 133 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround 134 but VIA don't answer queries. If you happen to have good contacts at VIA 135 ask them for me please -- Alan 136 137 This appears to be BIOS not version dependent. So presumably there is a 138 chipset level fix */ 139 140 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev) 141 { 142 if (!isa_dma_bridge_buggy) { 143 isa_dma_bridge_buggy=1; 144 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n"); 145 } 146 } 147 /* 148 * Its not totally clear which chipsets are the problematic ones 149 * We know 82C586 and 82C596 variants are affected. 150 */ 151 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs); 152 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs); 153 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs); 154 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs); 155 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs); 156 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs); 157 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs); 158 159 /* 160 * Chipsets where PCI->PCI transfers vanish or hang 161 */ 162 static void __devinit quirk_nopcipci(struct pci_dev *dev) 163 { 164 if ((pci_pci_problems & PCIPCI_FAIL)==0) { 165 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n"); 166 pci_pci_problems |= PCIPCI_FAIL; 167 } 168 } 169 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci); 170 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci); 171 172 static void __devinit quirk_nopciamd(struct pci_dev *dev) 173 { 174 u8 rev; 175 pci_read_config_byte(dev, 0x08, &rev); 176 if (rev == 0x13) { 177 /* Erratum 24 */ 178 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n"); 179 pci_pci_problems |= PCIAGP_FAIL; 180 } 181 } 182 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd); 183 184 /* 185 * Triton requires workarounds to be used by the drivers 186 */ 187 static void __devinit quirk_triton(struct pci_dev *dev) 188 { 189 if ((pci_pci_problems&PCIPCI_TRITON)==0) { 190 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 191 pci_pci_problems |= PCIPCI_TRITON; 192 } 193 } 194 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton); 195 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton); 196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton); 197 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton); 198 199 /* 200 * VIA Apollo KT133 needs PCI latency patch 201 * Made according to a windows driver based patch by George E. Breese 202 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm 203 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for 204 * the info on which Mr Breese based his work. 205 * 206 * Updated based on further information from the site and also on 207 * information provided by VIA 208 */ 209 static void quirk_vialatency(struct pci_dev *dev) 210 { 211 struct pci_dev *p; 212 u8 busarb; 213 /* Ok we have a potential problem chipset here. Now see if we have 214 a buggy southbridge */ 215 216 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL); 217 if (p!=NULL) { 218 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */ 219 /* Check for buggy part revisions */ 220 if (p->revision < 0x40 || p->revision > 0x42) 221 goto exit; 222 } else { 223 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL); 224 if (p==NULL) /* No problem parts */ 225 goto exit; 226 /* Check for buggy part revisions */ 227 if (p->revision < 0x10 || p->revision > 0x12) 228 goto exit; 229 } 230 231 /* 232 * Ok we have the problem. Now set the PCI master grant to 233 * occur every master grant. The apparent bug is that under high 234 * PCI load (quite common in Linux of course) you can get data 235 * loss when the CPU is held off the bus for 3 bus master requests 236 * This happens to include the IDE controllers.... 237 * 238 * VIA only apply this fix when an SB Live! is present but under 239 * both Linux and Windows this isnt enough, and we have seen 240 * corruption without SB Live! but with things like 3 UDMA IDE 241 * controllers. So we ignore that bit of the VIA recommendation.. 242 */ 243 244 pci_read_config_byte(dev, 0x76, &busarb); 245 /* Set bit 4 and bi 5 of byte 76 to 0x01 246 "Master priority rotation on every PCI master grant */ 247 busarb &= ~(1<<5); 248 busarb |= (1<<4); 249 pci_write_config_byte(dev, 0x76, busarb); 250 dev_info(&dev->dev, "Applying VIA southbridge workaround\n"); 251 exit: 252 pci_dev_put(p); 253 } 254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 255 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 256 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 257 /* Must restore this on a resume from RAM */ 258 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 259 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 260 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 261 262 /* 263 * VIA Apollo VP3 needs ETBF on BT848/878 264 */ 265 static void __devinit quirk_viaetbf(struct pci_dev *dev) 266 { 267 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) { 268 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 269 pci_pci_problems |= PCIPCI_VIAETBF; 270 } 271 } 272 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf); 273 274 static void __devinit quirk_vsfx(struct pci_dev *dev) 275 { 276 if ((pci_pci_problems&PCIPCI_VSFX)==0) { 277 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 278 pci_pci_problems |= PCIPCI_VSFX; 279 } 280 } 281 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx); 282 283 /* 284 * Ali Magik requires workarounds to be used by the drivers 285 * that DMA to AGP space. Latency must be set to 0xA and triton 286 * workaround applied too 287 * [Info kindly provided by ALi] 288 */ 289 static void __init quirk_alimagik(struct pci_dev *dev) 290 { 291 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) { 292 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 293 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON; 294 } 295 } 296 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik); 297 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik); 298 299 /* 300 * Natoma has some interesting boundary conditions with Zoran stuff 301 * at least 302 */ 303 static void __devinit quirk_natoma(struct pci_dev *dev) 304 { 305 if ((pci_pci_problems&PCIPCI_NATOMA)==0) { 306 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 307 pci_pci_problems |= PCIPCI_NATOMA; 308 } 309 } 310 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma); 311 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma); 312 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma); 313 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma); 314 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma); 315 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma); 316 317 /* 318 * This chip can cause PCI parity errors if config register 0xA0 is read 319 * while DMAs are occurring. 320 */ 321 static void __devinit quirk_citrine(struct pci_dev *dev) 322 { 323 dev->cfg_size = 0xA0; 324 } 325 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine); 326 327 /* 328 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M. 329 * If it's needed, re-allocate the region. 330 */ 331 static void __devinit quirk_s3_64M(struct pci_dev *dev) 332 { 333 struct resource *r = &dev->resource[0]; 334 335 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) { 336 r->start = 0; 337 r->end = 0x3ffffff; 338 } 339 } 340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M); 341 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M); 342 343 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region, 344 unsigned size, int nr, const char *name) 345 { 346 region &= ~(size-1); 347 if (region) { 348 struct pci_bus_region bus_region; 349 struct resource *res = dev->resource + nr; 350 351 res->name = pci_name(dev); 352 res->start = region; 353 res->end = region + size - 1; 354 res->flags = IORESOURCE_IO; 355 356 /* Convert from PCI bus to resource space. */ 357 bus_region.start = res->start; 358 bus_region.end = res->end; 359 pcibios_bus_to_resource(dev, res, &bus_region); 360 361 pci_claim_resource(dev, nr); 362 dev_info(&dev->dev, "quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name); 363 } 364 } 365 366 /* 367 * ATI Northbridge setups MCE the processor if you even 368 * read somewhere between 0x3b0->0x3bb or read 0x3d3 369 */ 370 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev) 371 { 372 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n"); 373 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */ 374 request_region(0x3b0, 0x0C, "RadeonIGP"); 375 request_region(0x3d3, 0x01, "RadeonIGP"); 376 } 377 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce); 378 379 /* 380 * Let's make the southbridge information explicit instead 381 * of having to worry about people probing the ACPI areas, 382 * for example.. (Yes, it happens, and if you read the wrong 383 * ACPI register it will put the machine to sleep with no 384 * way of waking it up again. Bummer). 385 * 386 * ALI M7101: Two IO regions pointed to by words at 387 * 0xE0 (64 bytes of ACPI registers) 388 * 0xE2 (32 bytes of SMB registers) 389 */ 390 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev) 391 { 392 u16 region; 393 394 pci_read_config_word(dev, 0xE0, ®ion); 395 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI"); 396 pci_read_config_word(dev, 0xE2, ®ion); 397 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB"); 398 } 399 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi); 400 401 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 402 { 403 u32 devres; 404 u32 mask, size, base; 405 406 pci_read_config_dword(dev, port, &devres); 407 if ((devres & enable) != enable) 408 return; 409 mask = (devres >> 16) & 15; 410 base = devres & 0xffff; 411 size = 16; 412 for (;;) { 413 unsigned bit = size >> 1; 414 if ((bit & mask) == bit) 415 break; 416 size = bit; 417 } 418 /* 419 * For now we only print it out. Eventually we'll want to 420 * reserve it (at least if it's in the 0x1000+ range), but 421 * let's get enough confirmation reports first. 422 */ 423 base &= -size; 424 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1); 425 } 426 427 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 428 { 429 u32 devres; 430 u32 mask, size, base; 431 432 pci_read_config_dword(dev, port, &devres); 433 if ((devres & enable) != enable) 434 return; 435 base = devres & 0xffff0000; 436 mask = (devres & 0x3f) << 16; 437 size = 128 << 16; 438 for (;;) { 439 unsigned bit = size >> 1; 440 if ((bit & mask) == bit) 441 break; 442 size = bit; 443 } 444 /* 445 * For now we only print it out. Eventually we'll want to 446 * reserve it, but let's get enough confirmation reports first. 447 */ 448 base &= -size; 449 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1); 450 } 451 452 /* 453 * PIIX4 ACPI: Two IO regions pointed to by longwords at 454 * 0x40 (64 bytes of ACPI registers) 455 * 0x90 (16 bytes of SMB registers) 456 * and a few strange programmable PIIX4 device resources. 457 */ 458 static void __devinit quirk_piix4_acpi(struct pci_dev *dev) 459 { 460 u32 region, res_a; 461 462 pci_read_config_dword(dev, 0x40, ®ion); 463 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI"); 464 pci_read_config_dword(dev, 0x90, ®ion); 465 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB"); 466 467 /* Device resource A has enables for some of the other ones */ 468 pci_read_config_dword(dev, 0x5c, &res_a); 469 470 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21); 471 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21); 472 473 /* Device resource D is just bitfields for static resources */ 474 475 /* Device 12 enabled? */ 476 if (res_a & (1 << 29)) { 477 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20); 478 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7); 479 } 480 /* Device 13 enabled? */ 481 if (res_a & (1 << 30)) { 482 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20); 483 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7); 484 } 485 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20); 486 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); 487 } 488 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi); 489 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi); 490 491 /* 492 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at 493 * 0x40 (128 bytes of ACPI, GPIO & TCO registers) 494 * 0x58 (64 bytes of GPIO I/O space) 495 */ 496 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev) 497 { 498 u32 region; 499 500 pci_read_config_dword(dev, 0x40, ®ion); 501 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO"); 502 503 pci_read_config_dword(dev, 0x58, ®ion); 504 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO"); 505 } 506 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi); 507 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi); 508 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi); 509 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi); 510 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi); 511 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi); 512 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi); 513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi); 514 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi); 515 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi); 516 517 static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev) 518 { 519 u32 region; 520 521 pci_read_config_dword(dev, 0x40, ®ion); 522 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO"); 523 524 pci_read_config_dword(dev, 0x48, ®ion); 525 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO"); 526 } 527 528 static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize) 529 { 530 u32 val; 531 u32 size, base; 532 533 pci_read_config_dword(dev, reg, &val); 534 535 /* Enabled? */ 536 if (!(val & 1)) 537 return; 538 base = val & 0xfffc; 539 if (dynsize) { 540 /* 541 * This is not correct. It is 16, 32 or 64 bytes depending on 542 * register D31:F0:ADh bits 5:4. 543 * 544 * But this gets us at least _part_ of it. 545 */ 546 size = 16; 547 } else { 548 size = 128; 549 } 550 base &= ~(size-1); 551 552 /* Just print it out for now. We should reserve it after more debugging */ 553 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1); 554 } 555 556 static void __devinit quirk_ich6_lpc(struct pci_dev *dev) 557 { 558 /* Shared ACPI/GPIO decode with all ICH6+ */ 559 ich6_lpc_acpi_gpio(dev); 560 561 /* ICH6-specific generic IO decode */ 562 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0); 563 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1); 564 } 565 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc); 566 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc); 567 568 static void __devinit ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name) 569 { 570 u32 val; 571 u32 mask, base; 572 573 pci_read_config_dword(dev, reg, &val); 574 575 /* Enabled? */ 576 if (!(val & 1)) 577 return; 578 579 /* 580 * IO base in bits 15:2, mask in bits 23:18, both 581 * are dword-based 582 */ 583 base = val & 0xfffc; 584 mask = (val >> 16) & 0xfc; 585 mask |= 3; 586 587 /* Just print it out for now. We should reserve it after more debugging */ 588 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask); 589 } 590 591 /* ICH7-10 has the same common LPC generic IO decode registers */ 592 static void __devinit quirk_ich7_lpc(struct pci_dev *dev) 593 { 594 /* We share the common ACPI/DPIO decode with ICH6 */ 595 ich6_lpc_acpi_gpio(dev); 596 597 /* And have 4 ICH7+ generic decodes */ 598 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1"); 599 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2"); 600 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3"); 601 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4"); 602 } 603 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc); 604 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc); 605 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc); 606 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc); 607 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc); 608 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc); 609 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc); 610 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc); 611 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc); 612 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc); 613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc); 614 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc); 615 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc); 616 617 /* 618 * VIA ACPI: One IO region pointed to by longword at 619 * 0x48 or 0x20 (256 bytes of ACPI registers) 620 */ 621 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev) 622 { 623 u32 region; 624 625 if (dev->revision & 0x10) { 626 pci_read_config_dword(dev, 0x48, ®ion); 627 region &= PCI_BASE_ADDRESS_IO_MASK; 628 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI"); 629 } 630 } 631 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi); 632 633 /* 634 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at 635 * 0x48 (256 bytes of ACPI registers) 636 * 0x70 (128 bytes of hardware monitoring register) 637 * 0x90 (16 bytes of SMB registers) 638 */ 639 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev) 640 { 641 u16 hm; 642 u32 smb; 643 644 quirk_vt82c586_acpi(dev); 645 646 pci_read_config_word(dev, 0x70, &hm); 647 hm &= PCI_BASE_ADDRESS_IO_MASK; 648 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon"); 649 650 pci_read_config_dword(dev, 0x90, &smb); 651 smb &= PCI_BASE_ADDRESS_IO_MASK; 652 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB"); 653 } 654 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi); 655 656 /* 657 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at 658 * 0x88 (128 bytes of power management registers) 659 * 0xd0 (16 bytes of SMB registers) 660 */ 661 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev) 662 { 663 u16 pm, smb; 664 665 pci_read_config_word(dev, 0x88, &pm); 666 pm &= PCI_BASE_ADDRESS_IO_MASK; 667 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM"); 668 669 pci_read_config_word(dev, 0xd0, &smb); 670 smb &= PCI_BASE_ADDRESS_IO_MASK; 671 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB"); 672 } 673 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi); 674 675 676 #ifdef CONFIG_X86_IO_APIC 677 678 #include <asm/io_apic.h> 679 680 /* 681 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip 682 * devices to the external APIC. 683 * 684 * TODO: When we have device-specific interrupt routers, 685 * this code will go away from quirks. 686 */ 687 static void quirk_via_ioapic(struct pci_dev *dev) 688 { 689 u8 tmp; 690 691 if (nr_ioapics < 1) 692 tmp = 0; /* nothing routed to external APIC */ 693 else 694 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */ 695 696 dev_info(&dev->dev, "%sbling VIA external APIC routing\n", 697 tmp == 0 ? "Disa" : "Ena"); 698 699 /* Offset 0x58: External APIC IRQ output control */ 700 pci_write_config_byte (dev, 0x58, tmp); 701 } 702 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 703 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 704 705 /* 706 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit. 707 * This leads to doubled level interrupt rates. 708 * Set this bit to get rid of cycle wastage. 709 * Otherwise uncritical. 710 */ 711 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev) 712 { 713 u8 misc_control2; 714 #define BYPASS_APIC_DEASSERT 8 715 716 pci_read_config_byte(dev, 0x5B, &misc_control2); 717 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) { 718 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n"); 719 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT); 720 } 721 } 722 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 723 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 724 725 /* 726 * The AMD io apic can hang the box when an apic irq is masked. 727 * We check all revs >= B0 (yet not in the pre production!) as the bug 728 * is currently marked NoFix 729 * 730 * We have multiple reports of hangs with this chipset that went away with 731 * noapic specified. For the moment we assume it's the erratum. We may be wrong 732 * of course. However the advice is demonstrably good even if so.. 733 */ 734 static void __devinit quirk_amd_ioapic(struct pci_dev *dev) 735 { 736 if (dev->revision >= 0x02) { 737 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n"); 738 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n"); 739 } 740 } 741 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic); 742 743 static void __init quirk_ioapic_rmw(struct pci_dev *dev) 744 { 745 if (dev->devfn == 0 && dev->bus->number == 0) 746 sis_apic_bug = 1; 747 } 748 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw); 749 #endif /* CONFIG_X86_IO_APIC */ 750 751 /* 752 * Some settings of MMRBC can lead to data corruption so block changes. 753 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide 754 */ 755 static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev) 756 { 757 if (dev->subordinate && dev->revision <= 0x12) { 758 dev_info(&dev->dev, "AMD8131 rev %x detected; " 759 "disabling PCI-X MMRBC\n", dev->revision); 760 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC; 761 } 762 } 763 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc); 764 765 /* 766 * FIXME: it is questionable that quirk_via_acpi 767 * is needed. It shows up as an ISA bridge, and does not 768 * support the PCI_INTERRUPT_LINE register at all. Therefore 769 * it seems like setting the pci_dev's 'irq' to the 770 * value of the ACPI SCI interrupt is only done for convenience. 771 * -jgarzik 772 */ 773 static void __devinit quirk_via_acpi(struct pci_dev *d) 774 { 775 /* 776 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42 777 */ 778 u8 irq; 779 pci_read_config_byte(d, 0x42, &irq); 780 irq &= 0xf; 781 if (irq && (irq != 2)) 782 d->irq = irq; 783 } 784 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi); 785 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi); 786 787 788 /* 789 * VIA bridges which have VLink 790 */ 791 792 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18; 793 794 static void quirk_via_bridge(struct pci_dev *dev) 795 { 796 /* See what bridge we have and find the device ranges */ 797 switch (dev->device) { 798 case PCI_DEVICE_ID_VIA_82C686: 799 /* The VT82C686 is special, it attaches to PCI and can have 800 any device number. All its subdevices are functions of 801 that single device. */ 802 via_vlink_dev_lo = PCI_SLOT(dev->devfn); 803 via_vlink_dev_hi = PCI_SLOT(dev->devfn); 804 break; 805 case PCI_DEVICE_ID_VIA_8237: 806 case PCI_DEVICE_ID_VIA_8237A: 807 via_vlink_dev_lo = 15; 808 break; 809 case PCI_DEVICE_ID_VIA_8235: 810 via_vlink_dev_lo = 16; 811 break; 812 case PCI_DEVICE_ID_VIA_8231: 813 case PCI_DEVICE_ID_VIA_8233_0: 814 case PCI_DEVICE_ID_VIA_8233A: 815 case PCI_DEVICE_ID_VIA_8233C_0: 816 via_vlink_dev_lo = 17; 817 break; 818 } 819 } 820 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge); 821 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge); 822 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge); 823 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge); 824 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge); 825 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge); 826 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge); 827 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge); 828 829 /** 830 * quirk_via_vlink - VIA VLink IRQ number update 831 * @dev: PCI device 832 * 833 * If the device we are dealing with is on a PIC IRQ we need to 834 * ensure that the IRQ line register which usually is not relevant 835 * for PCI cards, is actually written so that interrupts get sent 836 * to the right place. 837 * We only do this on systems where a VIA south bridge was detected, 838 * and only for VIA devices on the motherboard (see quirk_via_bridge 839 * above). 840 */ 841 842 static void quirk_via_vlink(struct pci_dev *dev) 843 { 844 u8 irq, new_irq; 845 846 /* Check if we have VLink at all */ 847 if (via_vlink_dev_lo == -1) 848 return; 849 850 new_irq = dev->irq; 851 852 /* Don't quirk interrupts outside the legacy IRQ range */ 853 if (!new_irq || new_irq > 15) 854 return; 855 856 /* Internal device ? */ 857 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi || 858 PCI_SLOT(dev->devfn) < via_vlink_dev_lo) 859 return; 860 861 /* This is an internal VLink device on a PIC interrupt. The BIOS 862 ought to have set this but may not have, so we redo it */ 863 864 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); 865 if (new_irq != irq) { 866 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n", 867 irq, new_irq); 868 udelay(15); /* unknown if delay really needed */ 869 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); 870 } 871 } 872 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink); 873 874 /* 875 * VIA VT82C598 has its device ID settable and many BIOSes 876 * set it to the ID of VT82C597 for backward compatibility. 877 * We need to switch it off to be able to recognize the real 878 * type of the chip. 879 */ 880 static void __devinit quirk_vt82c598_id(struct pci_dev *dev) 881 { 882 pci_write_config_byte(dev, 0xfc, 0); 883 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device); 884 } 885 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id); 886 887 /* 888 * CardBus controllers have a legacy base address that enables them 889 * to respond as i82365 pcmcia controllers. We don't want them to 890 * do this even if the Linux CardBus driver is not loaded, because 891 * the Linux i82365 driver does not (and should not) handle CardBus. 892 */ 893 static void quirk_cardbus_legacy(struct pci_dev *dev) 894 { 895 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class) 896 return; 897 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0); 898 } 899 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy); 900 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy); 901 902 /* 903 * Following the PCI ordering rules is optional on the AMD762. I'm not 904 * sure what the designers were smoking but let's not inhale... 905 * 906 * To be fair to AMD, it follows the spec by default, its BIOS people 907 * who turn it off! 908 */ 909 static void quirk_amd_ordering(struct pci_dev *dev) 910 { 911 u32 pcic; 912 pci_read_config_dword(dev, 0x4C, &pcic); 913 if ((pcic&6)!=6) { 914 pcic |= 6; 915 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n"); 916 pci_write_config_dword(dev, 0x4C, pcic); 917 pci_read_config_dword(dev, 0x84, &pcic); 918 pcic |= (1<<23); /* Required in this mode */ 919 pci_write_config_dword(dev, 0x84, pcic); 920 } 921 } 922 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 923 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 924 925 /* 926 * DreamWorks provided workaround for Dunord I-3000 problem 927 * 928 * This card decodes and responds to addresses not apparently 929 * assigned to it. We force a larger allocation to ensure that 930 * nothing gets put too close to it. 931 */ 932 static void __devinit quirk_dunord ( struct pci_dev * dev ) 933 { 934 struct resource *r = &dev->resource [1]; 935 r->start = 0; 936 r->end = 0xffffff; 937 } 938 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord); 939 940 /* 941 * i82380FB mobile docking controller: its PCI-to-PCI bridge 942 * is subtractive decoding (transparent), and does indicate this 943 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80 944 * instead of 0x01. 945 */ 946 static void __devinit quirk_transparent_bridge(struct pci_dev *dev) 947 { 948 dev->transparent = 1; 949 } 950 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge); 951 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge); 952 953 /* 954 * Common misconfiguration of the MediaGX/Geode PCI master that will 955 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 956 * datasheets found at http://www.national.com/ds/GX for info on what 957 * these bits do. <christer@weinigel.se> 958 */ 959 static void quirk_mediagx_master(struct pci_dev *dev) 960 { 961 u8 reg; 962 pci_read_config_byte(dev, 0x41, ®); 963 if (reg & 2) { 964 reg &= ~2; 965 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg); 966 pci_write_config_byte(dev, 0x41, reg); 967 } 968 } 969 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 970 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 971 972 /* 973 * Ensure C0 rev restreaming is off. This is normally done by 974 * the BIOS but in the odd case it is not the results are corruption 975 * hence the presence of a Linux check 976 */ 977 static void quirk_disable_pxb(struct pci_dev *pdev) 978 { 979 u16 config; 980 981 if (pdev->revision != 0x04) /* Only C0 requires this */ 982 return; 983 pci_read_config_word(pdev, 0x40, &config); 984 if (config & (1<<6)) { 985 config &= ~(1<<6); 986 pci_write_config_word(pdev, 0x40, config); 987 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n"); 988 } 989 } 990 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 991 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 992 993 static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev) 994 { 995 /* set sb600/sb700/sb800 sata to ahci mode */ 996 u8 tmp; 997 998 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp); 999 if (tmp == 0x01) { 1000 pci_read_config_byte(pdev, 0x40, &tmp); 1001 pci_write_config_byte(pdev, 0x40, tmp|1); 1002 pci_write_config_byte(pdev, 0x9, 1); 1003 pci_write_config_byte(pdev, 0xa, 6); 1004 pci_write_config_byte(pdev, 0x40, tmp); 1005 1006 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI; 1007 dev_info(&pdev->dev, "set SATA to AHCI mode\n"); 1008 } 1009 } 1010 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1011 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1012 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1013 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1014 1015 /* 1016 * Serverworks CSB5 IDE does not fully support native mode 1017 */ 1018 static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev) 1019 { 1020 u8 prog; 1021 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1022 if (prog & 5) { 1023 prog &= ~5; 1024 pdev->class &= ~5; 1025 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1026 /* PCI layer will sort out resources */ 1027 } 1028 } 1029 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide); 1030 1031 /* 1032 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same 1033 */ 1034 static void __init quirk_ide_samemode(struct pci_dev *pdev) 1035 { 1036 u8 prog; 1037 1038 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1039 1040 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) { 1041 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n"); 1042 prog &= ~5; 1043 pdev->class &= ~5; 1044 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1045 } 1046 } 1047 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode); 1048 1049 /* 1050 * Some ATA devices break if put into D3 1051 */ 1052 1053 static void __devinit quirk_no_ata_d3(struct pci_dev *pdev) 1054 { 1055 /* Quirk the legacy ATA devices only. The AHCI ones are ok */ 1056 if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) 1057 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3; 1058 } 1059 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, quirk_no_ata_d3); 1060 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_no_ata_d3); 1061 /* ALi loses some register settings that we cannot then restore */ 1062 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, quirk_no_ata_d3); 1063 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures 1064 occur when mode detecting */ 1065 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_no_ata_d3); 1066 1067 /* This was originally an Alpha specific thing, but it really fits here. 1068 * The i82375 PCI/EISA bridge appears as non-classified. Fix that. 1069 */ 1070 static void __init quirk_eisa_bridge(struct pci_dev *dev) 1071 { 1072 dev->class = PCI_CLASS_BRIDGE_EISA << 8; 1073 } 1074 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge); 1075 1076 1077 /* 1078 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge 1079 * is not activated. The myth is that Asus said that they do not want the 1080 * users to be irritated by just another PCI Device in the Win98 device 1081 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors 1082 * package 2.7.0 for details) 1083 * 1084 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC 1085 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it 1086 * becomes necessary to do this tweak in two steps -- the chosen trigger 1087 * is either the Host bridge (preferred) or on-board VGA controller. 1088 * 1089 * Note that we used to unhide the SMBus that way on Toshiba laptops 1090 * (Satellite A40 and Tecra M2) but then found that the thermal management 1091 * was done by SMM code, which could cause unsynchronized concurrent 1092 * accesses to the SMBus registers, with potentially bad effects. Thus you 1093 * should be very careful when adding new entries: if SMM is accessing the 1094 * Intel SMBus, this is a very good reason to leave it hidden. 1095 * 1096 * Likewise, many recent laptops use ACPI for thermal management. If the 1097 * ACPI DSDT code accesses the SMBus, then Linux should not access it 1098 * natively, and keeping the SMBus hidden is the right thing to do. If you 1099 * are about to add an entry in the table below, please first disassemble 1100 * the DSDT and double-check that there is no code accessing the SMBus. 1101 */ 1102 static int asus_hides_smbus; 1103 1104 static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev) 1105 { 1106 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1107 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB) 1108 switch(dev->subsystem_device) { 1109 case 0x8025: /* P4B-LX */ 1110 case 0x8070: /* P4B */ 1111 case 0x8088: /* P4B533 */ 1112 case 0x1626: /* L3C notebook */ 1113 asus_hides_smbus = 1; 1114 } 1115 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) 1116 switch(dev->subsystem_device) { 1117 case 0x80b1: /* P4GE-V */ 1118 case 0x80b2: /* P4PE */ 1119 case 0x8093: /* P4B533-V */ 1120 asus_hides_smbus = 1; 1121 } 1122 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB) 1123 switch(dev->subsystem_device) { 1124 case 0x8030: /* P4T533 */ 1125 asus_hides_smbus = 1; 1126 } 1127 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0) 1128 switch (dev->subsystem_device) { 1129 case 0x8070: /* P4G8X Deluxe */ 1130 asus_hides_smbus = 1; 1131 } 1132 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH) 1133 switch (dev->subsystem_device) { 1134 case 0x80c9: /* PU-DLS */ 1135 asus_hides_smbus = 1; 1136 } 1137 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB) 1138 switch (dev->subsystem_device) { 1139 case 0x1751: /* M2N notebook */ 1140 case 0x1821: /* M5N notebook */ 1141 case 0x1897: /* A6L notebook */ 1142 asus_hides_smbus = 1; 1143 } 1144 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1145 switch (dev->subsystem_device) { 1146 case 0x184b: /* W1N notebook */ 1147 case 0x186a: /* M6Ne notebook */ 1148 asus_hides_smbus = 1; 1149 } 1150 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1151 switch (dev->subsystem_device) { 1152 case 0x80f2: /* P4P800-X */ 1153 asus_hides_smbus = 1; 1154 } 1155 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) 1156 switch (dev->subsystem_device) { 1157 case 0x1882: /* M6V notebook */ 1158 case 0x1977: /* A6VA notebook */ 1159 asus_hides_smbus = 1; 1160 } 1161 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) { 1162 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1163 switch(dev->subsystem_device) { 1164 case 0x088C: /* HP Compaq nc8000 */ 1165 case 0x0890: /* HP Compaq nc6000 */ 1166 asus_hides_smbus = 1; 1167 } 1168 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1169 switch (dev->subsystem_device) { 1170 case 0x12bc: /* HP D330L */ 1171 case 0x12bd: /* HP D530 */ 1172 case 0x006a: /* HP Compaq nx9500 */ 1173 asus_hides_smbus = 1; 1174 } 1175 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB) 1176 switch (dev->subsystem_device) { 1177 case 0x12bf: /* HP xw4100 */ 1178 asus_hides_smbus = 1; 1179 } 1180 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) { 1181 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1182 switch(dev->subsystem_device) { 1183 case 0xC00C: /* Samsung P35 notebook */ 1184 asus_hides_smbus = 1; 1185 } 1186 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) { 1187 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1188 switch(dev->subsystem_device) { 1189 case 0x0058: /* Compaq Evo N620c */ 1190 asus_hides_smbus = 1; 1191 } 1192 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3) 1193 switch(dev->subsystem_device) { 1194 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */ 1195 /* Motherboard doesn't have Host bridge 1196 * subvendor/subdevice IDs, therefore checking 1197 * its on-board VGA controller */ 1198 asus_hides_smbus = 1; 1199 } 1200 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2) 1201 switch(dev->subsystem_device) { 1202 case 0x00b8: /* Compaq Evo D510 CMT */ 1203 case 0x00b9: /* Compaq Evo D510 SFF */ 1204 /* Motherboard doesn't have Host bridge 1205 * subvendor/subdevice IDs and on-board VGA 1206 * controller is disabled if an AGP card is 1207 * inserted, therefore checking USB UHCI 1208 * Controller #1 */ 1209 asus_hides_smbus = 1; 1210 } 1211 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC) 1212 switch (dev->subsystem_device) { 1213 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */ 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 } 1220 } 1221 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge); 1222 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge); 1223 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge); 1224 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge); 1225 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge); 1226 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge); 1227 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge); 1228 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge); 1229 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge); 1230 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge); 1231 1232 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge); 1233 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge); 1234 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge); 1235 1236 static void asus_hides_smbus_lpc(struct pci_dev *dev) 1237 { 1238 u16 val; 1239 1240 if (likely(!asus_hides_smbus)) 1241 return; 1242 1243 pci_read_config_word(dev, 0xF2, &val); 1244 if (val & 0x8) { 1245 pci_write_config_word(dev, 0xF2, val & (~0x8)); 1246 pci_read_config_word(dev, 0xF2, &val); 1247 if (val & 0x8) 1248 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val); 1249 else 1250 dev_info(&dev->dev, "Enabled i801 SMBus device\n"); 1251 } 1252 } 1253 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1254 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1255 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1256 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1257 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1258 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1259 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1260 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1261 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1262 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1263 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1264 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1265 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1266 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1267 1268 /* It appears we just have one such device. If not, we have a warning */ 1269 static void __iomem *asus_rcba_base; 1270 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev) 1271 { 1272 u32 rcba; 1273 1274 if (likely(!asus_hides_smbus)) 1275 return; 1276 WARN_ON(asus_rcba_base); 1277 1278 pci_read_config_dword(dev, 0xF0, &rcba); 1279 /* use bits 31:14, 16 kB aligned */ 1280 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); 1281 if (asus_rcba_base == NULL) 1282 return; 1283 } 1284 1285 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev) 1286 { 1287 u32 val; 1288 1289 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1290 return; 1291 /* read the Function Disable register, dword mode only */ 1292 val = readl(asus_rcba_base + 0x3418); 1293 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */ 1294 } 1295 1296 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev) 1297 { 1298 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1299 return; 1300 iounmap(asus_rcba_base); 1301 asus_rcba_base = NULL; 1302 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n"); 1303 } 1304 1305 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev) 1306 { 1307 asus_hides_smbus_lpc_ich6_suspend(dev); 1308 asus_hides_smbus_lpc_ich6_resume_early(dev); 1309 asus_hides_smbus_lpc_ich6_resume(dev); 1310 } 1311 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6); 1312 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend); 1313 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume); 1314 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early); 1315 1316 /* 1317 * SiS 96x south bridge: BIOS typically hides SMBus device... 1318 */ 1319 static void quirk_sis_96x_smbus(struct pci_dev *dev) 1320 { 1321 u8 val = 0; 1322 pci_read_config_byte(dev, 0x77, &val); 1323 if (val & 0x10) { 1324 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n"); 1325 pci_write_config_byte(dev, 0x77, val & ~0x10); 1326 } 1327 } 1328 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1329 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1330 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1331 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1332 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1333 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1334 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1335 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1336 1337 /* 1338 * ... This is further complicated by the fact that some SiS96x south 1339 * bridges pretend to be 85C503/5513 instead. In that case see if we 1340 * spotted a compatible north bridge to make sure. 1341 * (pci_find_device doesn't work yet) 1342 * 1343 * We can also enable the sis96x bit in the discovery register.. 1344 */ 1345 #define SIS_DETECT_REGISTER 0x40 1346 1347 static void quirk_sis_503(struct pci_dev *dev) 1348 { 1349 u8 reg; 1350 u16 devid; 1351 1352 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®); 1353 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6)); 1354 pci_read_config_word(dev, PCI_DEVICE_ID, &devid); 1355 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) { 1356 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg); 1357 return; 1358 } 1359 1360 /* 1361 * Ok, it now shows up as a 96x.. run the 96x quirk by 1362 * hand in case it has already been processed. 1363 * (depends on link order, which is apparently not guaranteed) 1364 */ 1365 dev->device = devid; 1366 quirk_sis_96x_smbus(dev); 1367 } 1368 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1369 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1370 1371 1372 /* 1373 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller 1374 * and MC97 modem controller are disabled when a second PCI soundcard is 1375 * present. This patch, tweaking the VT8237 ISA bridge, enables them. 1376 * -- bjd 1377 */ 1378 static void asus_hides_ac97_lpc(struct pci_dev *dev) 1379 { 1380 u8 val; 1381 int asus_hides_ac97 = 0; 1382 1383 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1384 if (dev->device == PCI_DEVICE_ID_VIA_8237) 1385 asus_hides_ac97 = 1; 1386 } 1387 1388 if (!asus_hides_ac97) 1389 return; 1390 1391 pci_read_config_byte(dev, 0x50, &val); 1392 if (val & 0xc0) { 1393 pci_write_config_byte(dev, 0x50, val & (~0xc0)); 1394 pci_read_config_byte(dev, 0x50, &val); 1395 if (val & 0xc0) 1396 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val); 1397 else 1398 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n"); 1399 } 1400 } 1401 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1402 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1403 1404 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) 1405 1406 /* 1407 * If we are using libata we can drive this chip properly but must 1408 * do this early on to make the additional device appear during 1409 * the PCI scanning. 1410 */ 1411 static void quirk_jmicron_ata(struct pci_dev *pdev) 1412 { 1413 u32 conf1, conf5, class; 1414 u8 hdr; 1415 1416 /* Only poke fn 0 */ 1417 if (PCI_FUNC(pdev->devfn)) 1418 return; 1419 1420 pci_read_config_dword(pdev, 0x40, &conf1); 1421 pci_read_config_dword(pdev, 0x80, &conf5); 1422 1423 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */ 1424 conf5 &= ~(1 << 24); /* Clear bit 24 */ 1425 1426 switch (pdev->device) { 1427 case PCI_DEVICE_ID_JMICRON_JMB360: 1428 /* The controller should be in single function ahci mode */ 1429 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */ 1430 break; 1431 1432 case PCI_DEVICE_ID_JMICRON_JMB365: 1433 case PCI_DEVICE_ID_JMICRON_JMB366: 1434 /* Redirect IDE second PATA port to the right spot */ 1435 conf5 |= (1 << 24); 1436 /* Fall through */ 1437 case PCI_DEVICE_ID_JMICRON_JMB361: 1438 case PCI_DEVICE_ID_JMICRON_JMB363: 1439 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */ 1440 /* Set the class codes correctly and then direct IDE 0 */ 1441 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */ 1442 break; 1443 1444 case PCI_DEVICE_ID_JMICRON_JMB368: 1445 /* The controller should be in single function IDE mode */ 1446 conf1 |= 0x00C00000; /* Set 22, 23 */ 1447 break; 1448 } 1449 1450 pci_write_config_dword(pdev, 0x40, conf1); 1451 pci_write_config_dword(pdev, 0x80, conf5); 1452 1453 /* Update pdev accordingly */ 1454 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr); 1455 pdev->hdr_type = hdr & 0x7f; 1456 pdev->multifunction = !!(hdr & 0x80); 1457 1458 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class); 1459 pdev->class = class >> 8; 1460 } 1461 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1462 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1463 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1464 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1465 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1466 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1467 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1468 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1469 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1470 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1471 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1472 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1473 1474 #endif 1475 1476 #ifdef CONFIG_X86_IO_APIC 1477 static void __init quirk_alder_ioapic(struct pci_dev *pdev) 1478 { 1479 int i; 1480 1481 if ((pdev->class >> 8) != 0xff00) 1482 return; 1483 1484 /* the first BAR is the location of the IO APIC...we must 1485 * not touch this (and it's already covered by the fixmap), so 1486 * forcibly insert it into the resource tree */ 1487 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0)) 1488 insert_resource(&iomem_resource, &pdev->resource[0]); 1489 1490 /* The next five BARs all seem to be rubbish, so just clean 1491 * them out */ 1492 for (i=1; i < 6; i++) { 1493 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i])); 1494 } 1495 1496 } 1497 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic); 1498 #endif 1499 1500 static void __devinit quirk_pcie_mch(struct pci_dev *pdev) 1501 { 1502 pcie_mch_quirk = 1; 1503 } 1504 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch); 1505 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch); 1506 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch); 1507 1508 1509 /* 1510 * It's possible for the MSI to get corrupted if shpc and acpi 1511 * are used together on certain PXH-based systems. 1512 */ 1513 static void __devinit quirk_pcie_pxh(struct pci_dev *dev) 1514 { 1515 pci_msi_off(dev); 1516 dev->no_msi = 1; 1517 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n"); 1518 } 1519 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); 1520 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); 1521 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh); 1522 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh); 1523 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh); 1524 1525 /* 1526 * Some Intel PCI Express chipsets have trouble with downstream 1527 * device power management. 1528 */ 1529 static void quirk_intel_pcie_pm(struct pci_dev * dev) 1530 { 1531 pci_pm_d3_delay = 120; 1532 dev->no_d1d2 = 1; 1533 } 1534 1535 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm); 1536 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm); 1537 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm); 1538 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm); 1539 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm); 1540 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm); 1541 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm); 1542 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm); 1543 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm); 1544 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm); 1545 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm); 1546 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm); 1547 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm); 1548 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm); 1549 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm); 1550 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm); 1551 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm); 1552 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm); 1553 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm); 1554 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm); 1555 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm); 1556 1557 #ifdef CONFIG_X86_IO_APIC 1558 /* 1559 * Boot interrupts on some chipsets cannot be turned off. For these chipsets, 1560 * remap the original interrupt in the linux kernel to the boot interrupt, so 1561 * that a PCI device's interrupt handler is installed on the boot interrupt 1562 * line instead. 1563 */ 1564 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev) 1565 { 1566 if (noioapicquirk || noioapicreroute) 1567 return; 1568 1569 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT; 1570 1571 printk(KERN_INFO "PCI quirk: reroute interrupts for 0x%04x:0x%04x\n", 1572 dev->vendor, dev->device); 1573 return; 1574 } 1575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 1576 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 1577 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 1578 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 1579 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 1580 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 1581 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 1582 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 1583 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 1584 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 1585 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 1586 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 1587 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 1588 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 1589 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 1590 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 1591 1592 /* 1593 * On some chipsets we can disable the generation of legacy INTx boot 1594 * interrupts. 1595 */ 1596 1597 /* 1598 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no 1599 * 300641-004US, section 5.7.3. 1600 */ 1601 #define INTEL_6300_IOAPIC_ABAR 0x40 1602 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14) 1603 1604 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev) 1605 { 1606 u16 pci_config_word; 1607 1608 if (noioapicquirk) 1609 return; 1610 1611 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word); 1612 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ; 1613 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word); 1614 1615 printk(KERN_INFO "disabled boot interrupt on device 0x%04x:0x%04x\n", 1616 dev->vendor, dev->device); 1617 } 1618 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); 1619 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); 1620 1621 /* 1622 * disable boot interrupts on HT-1000 1623 */ 1624 #define BC_HT1000_FEATURE_REG 0x64 1625 #define BC_HT1000_PIC_REGS_ENABLE (1<<0) 1626 #define BC_HT1000_MAP_IDX 0xC00 1627 #define BC_HT1000_MAP_DATA 0xC01 1628 1629 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev) 1630 { 1631 u32 pci_config_dword; 1632 u8 irq; 1633 1634 if (noioapicquirk) 1635 return; 1636 1637 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword); 1638 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword | 1639 BC_HT1000_PIC_REGS_ENABLE); 1640 1641 for (irq = 0x10; irq < 0x10 + 32; irq++) { 1642 outb(irq, BC_HT1000_MAP_IDX); 1643 outb(0x00, BC_HT1000_MAP_DATA); 1644 } 1645 1646 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword); 1647 1648 printk(KERN_INFO "disabled boot interrupts on PCI device" 1649 "0x%04x:0x%04x\n", dev->vendor, dev->device); 1650 } 1651 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 1652 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 1653 1654 /* 1655 * disable boot interrupts on AMD and ATI chipsets 1656 */ 1657 /* 1658 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131 1659 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode 1660 * (due to an erratum). 1661 */ 1662 #define AMD_813X_MISC 0x40 1663 #define AMD_813X_NOIOAMODE (1<<0) 1664 #define AMD_813X_REV_B2 0x13 1665 1666 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev) 1667 { 1668 u32 pci_config_dword; 1669 1670 if (noioapicquirk) 1671 return; 1672 if (dev->revision == AMD_813X_REV_B2) 1673 return; 1674 1675 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword); 1676 pci_config_dword &= ~AMD_813X_NOIOAMODE; 1677 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword); 1678 1679 printk(KERN_INFO "disabled boot interrupts on PCI device " 1680 "0x%04x:0x%04x\n", dev->vendor, dev->device); 1681 } 1682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1683 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1684 1685 #define AMD_8111_PCI_IRQ_ROUTING 0x56 1686 1687 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev) 1688 { 1689 u16 pci_config_word; 1690 1691 if (noioapicquirk) 1692 return; 1693 1694 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word); 1695 if (!pci_config_word) { 1696 printk(KERN_INFO "boot interrupts on PCI device 0x%04x:0x%04x " 1697 "already disabled\n", 1698 dev->vendor, dev->device); 1699 return; 1700 } 1701 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0); 1702 printk(KERN_INFO "disabled boot interrupts on PCI device " 1703 "0x%04x:0x%04x\n", dev->vendor, dev->device); 1704 } 1705 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 1706 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 1707 #endif /* CONFIG_X86_IO_APIC */ 1708 1709 /* 1710 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size 1711 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes. 1712 * Re-allocate the region if needed... 1713 */ 1714 static void __init quirk_tc86c001_ide(struct pci_dev *dev) 1715 { 1716 struct resource *r = &dev->resource[0]; 1717 1718 if (r->start & 0x8) { 1719 r->start = 0; 1720 r->end = 0xf; 1721 } 1722 } 1723 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2, 1724 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE, 1725 quirk_tc86c001_ide); 1726 1727 static void __devinit quirk_netmos(struct pci_dev *dev) 1728 { 1729 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4; 1730 unsigned int num_serial = dev->subsystem_device & 0xf; 1731 1732 /* 1733 * These Netmos parts are multiport serial devices with optional 1734 * parallel ports. Even when parallel ports are present, they 1735 * are identified as class SERIAL, which means the serial driver 1736 * will claim them. To prevent this, mark them as class OTHER. 1737 * These combo devices should be claimed by parport_serial. 1738 * 1739 * The subdevice ID is of the form 0x00PS, where <P> is the number 1740 * of parallel ports and <S> is the number of serial ports. 1741 */ 1742 switch (dev->device) { 1743 case PCI_DEVICE_ID_NETMOS_9835: 1744 /* Well, this rule doesn't hold for the following 9835 device */ 1745 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM && 1746 dev->subsystem_device == 0x0299) 1747 return; 1748 case PCI_DEVICE_ID_NETMOS_9735: 1749 case PCI_DEVICE_ID_NETMOS_9745: 1750 case PCI_DEVICE_ID_NETMOS_9845: 1751 case PCI_DEVICE_ID_NETMOS_9855: 1752 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL && 1753 num_parallel) { 1754 dev_info(&dev->dev, "Netmos %04x (%u parallel, " 1755 "%u serial); changing class SERIAL to OTHER " 1756 "(use parport_serial)\n", 1757 dev->device, num_parallel, num_serial); 1758 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) | 1759 (dev->class & 0xff); 1760 } 1761 } 1762 } 1763 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos); 1764 1765 static void __devinit quirk_e100_interrupt(struct pci_dev *dev) 1766 { 1767 u16 command, pmcsr; 1768 u8 __iomem *csr; 1769 u8 cmd_hi; 1770 int pm; 1771 1772 switch (dev->device) { 1773 /* PCI IDs taken from drivers/net/e100.c */ 1774 case 0x1029: 1775 case 0x1030 ... 0x1034: 1776 case 0x1038 ... 0x103E: 1777 case 0x1050 ... 0x1057: 1778 case 0x1059: 1779 case 0x1064 ... 0x106B: 1780 case 0x1091 ... 0x1095: 1781 case 0x1209: 1782 case 0x1229: 1783 case 0x2449: 1784 case 0x2459: 1785 case 0x245D: 1786 case 0x27DC: 1787 break; 1788 default: 1789 return; 1790 } 1791 1792 /* 1793 * Some firmware hands off the e100 with interrupts enabled, 1794 * which can cause a flood of interrupts if packets are 1795 * received before the driver attaches to the device. So 1796 * disable all e100 interrupts here. The driver will 1797 * re-enable them when it's ready. 1798 */ 1799 pci_read_config_word(dev, PCI_COMMAND, &command); 1800 1801 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0)) 1802 return; 1803 1804 /* 1805 * Check that the device is in the D0 power state. If it's not, 1806 * there is no point to look any further. 1807 */ 1808 pm = pci_find_capability(dev, PCI_CAP_ID_PM); 1809 if (pm) { 1810 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr); 1811 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) 1812 return; 1813 } 1814 1815 /* Convert from PCI bus to resource space. */ 1816 csr = ioremap(pci_resource_start(dev, 0), 8); 1817 if (!csr) { 1818 dev_warn(&dev->dev, "Can't map e100 registers\n"); 1819 return; 1820 } 1821 1822 cmd_hi = readb(csr + 3); 1823 if (cmd_hi == 0) { 1824 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; " 1825 "disabling\n"); 1826 writeb(1, csr + 3); 1827 } 1828 1829 iounmap(csr); 1830 } 1831 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt); 1832 1833 /* 1834 * The 82575 and 82598 may experience data corruption issues when transitioning 1835 * out of L0S. To prevent this we need to disable L0S on the pci-e link 1836 */ 1837 static void __devinit quirk_disable_aspm_l0s(struct pci_dev *dev) 1838 { 1839 dev_info(&dev->dev, "Disabling L0s\n"); 1840 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S); 1841 } 1842 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s); 1843 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s); 1844 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s); 1845 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s); 1846 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s); 1847 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s); 1848 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s); 1849 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s); 1850 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s); 1851 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s); 1852 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s); 1853 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s); 1854 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s); 1855 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s); 1856 1857 static void __devinit fixup_rev1_53c810(struct pci_dev* dev) 1858 { 1859 /* rev 1 ncr53c810 chips don't set the class at all which means 1860 * they don't get their resources remapped. Fix that here. 1861 */ 1862 1863 if (dev->class == PCI_CLASS_NOT_DEFINED) { 1864 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n"); 1865 dev->class = PCI_CLASS_STORAGE_SCSI; 1866 } 1867 } 1868 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); 1869 1870 /* Enable 1k I/O space granularity on the Intel P64H2 */ 1871 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev) 1872 { 1873 u16 en1k; 1874 u8 io_base_lo, io_limit_lo; 1875 unsigned long base, limit; 1876 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES; 1877 1878 pci_read_config_word(dev, 0x40, &en1k); 1879 1880 if (en1k & 0x200) { 1881 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n"); 1882 1883 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo); 1884 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo); 1885 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; 1886 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; 1887 1888 if (base <= limit) { 1889 res->start = base; 1890 res->end = limit + 0x3ff; 1891 } 1892 } 1893 } 1894 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io); 1895 1896 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2 1897 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge() 1898 * in drivers/pci/setup-bus.c 1899 */ 1900 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev) 1901 { 1902 u16 en1k, iobl_adr, iobl_adr_1k; 1903 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES; 1904 1905 pci_read_config_word(dev, 0x40, &en1k); 1906 1907 if (en1k & 0x200) { 1908 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr); 1909 1910 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00); 1911 1912 if (iobl_adr != iobl_adr_1k) { 1913 dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n", 1914 iobl_adr,iobl_adr_1k); 1915 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k); 1916 } 1917 } 1918 } 1919 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl); 1920 1921 /* Under some circumstances, AER is not linked with extended capabilities. 1922 * Force it to be linked by setting the corresponding control bit in the 1923 * config space. 1924 */ 1925 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev) 1926 { 1927 uint8_t b; 1928 if (pci_read_config_byte(dev, 0xf41, &b) == 0) { 1929 if (!(b & 0x20)) { 1930 pci_write_config_byte(dev, 0xf41, b | 0x20); 1931 dev_info(&dev->dev, 1932 "Linking AER extended capability\n"); 1933 } 1934 } 1935 } 1936 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 1937 quirk_nvidia_ck804_pcie_aer_ext_cap); 1938 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 1939 quirk_nvidia_ck804_pcie_aer_ext_cap); 1940 1941 static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev) 1942 { 1943 /* 1944 * Disable PCI Bus Parking and PCI Master read caching on CX700 1945 * which causes unspecified timing errors with a VT6212L on the PCI 1946 * bus leading to USB2.0 packet loss. The defaults are that these 1947 * features are turned off but some BIOSes turn them on. 1948 */ 1949 1950 uint8_t b; 1951 if (pci_read_config_byte(dev, 0x76, &b) == 0) { 1952 if (b & 0x40) { 1953 /* Turn off PCI Bus Parking */ 1954 pci_write_config_byte(dev, 0x76, b ^ 0x40); 1955 1956 dev_info(&dev->dev, 1957 "Disabling VIA CX700 PCI parking\n"); 1958 } 1959 } 1960 1961 if (pci_read_config_byte(dev, 0x72, &b) == 0) { 1962 if (b != 0) { 1963 /* Turn off PCI Master read caching */ 1964 pci_write_config_byte(dev, 0x72, 0x0); 1965 1966 /* Set PCI Master Bus time-out to "1x16 PCLK" */ 1967 pci_write_config_byte(dev, 0x75, 0x1); 1968 1969 /* Disable "Read FIFO Timer" */ 1970 pci_write_config_byte(dev, 0x77, 0x0); 1971 1972 dev_info(&dev->dev, 1973 "Disabling VIA CX700 PCI caching\n"); 1974 } 1975 } 1976 } 1977 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching); 1978 1979 /* 1980 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the 1981 * VPD end tag will hang the device. This problem was initially 1982 * observed when a vpd entry was created in sysfs 1983 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry 1984 * will dump 32k of data. Reading a full 32k will cause an access 1985 * beyond the VPD end tag causing the device to hang. Once the device 1986 * is hung, the bnx2 driver will not be able to reset the device. 1987 * We believe that it is legal to read beyond the end tag and 1988 * therefore the solution is to limit the read/write length. 1989 */ 1990 static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev) 1991 { 1992 /* 1993 * Only disable the VPD capability for 5706, 5706S, 5708, 1994 * 5708S and 5709 rev. A 1995 */ 1996 if ((dev->device == PCI_DEVICE_ID_NX2_5706) || 1997 (dev->device == PCI_DEVICE_ID_NX2_5706S) || 1998 (dev->device == PCI_DEVICE_ID_NX2_5708) || 1999 (dev->device == PCI_DEVICE_ID_NX2_5708S) || 2000 ((dev->device == PCI_DEVICE_ID_NX2_5709) && 2001 (dev->revision & 0xf0) == 0x0)) { 2002 if (dev->vpd) 2003 dev->vpd->len = 0x80; 2004 } 2005 } 2006 2007 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2008 PCI_DEVICE_ID_NX2_5706, 2009 quirk_brcm_570x_limit_vpd); 2010 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2011 PCI_DEVICE_ID_NX2_5706S, 2012 quirk_brcm_570x_limit_vpd); 2013 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2014 PCI_DEVICE_ID_NX2_5708, 2015 quirk_brcm_570x_limit_vpd); 2016 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2017 PCI_DEVICE_ID_NX2_5708S, 2018 quirk_brcm_570x_limit_vpd); 2019 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2020 PCI_DEVICE_ID_NX2_5709, 2021 quirk_brcm_570x_limit_vpd); 2022 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2023 PCI_DEVICE_ID_NX2_5709S, 2024 quirk_brcm_570x_limit_vpd); 2025 2026 /* Originally in EDAC sources for i82875P: 2027 * Intel tells BIOS developers to hide device 6 which 2028 * configures the overflow device access containing 2029 * the DRBs - this is where we expose device 6. 2030 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm 2031 */ 2032 static void __devinit quirk_unhide_mch_dev6(struct pci_dev *dev) 2033 { 2034 u8 reg; 2035 2036 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) { 2037 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n"); 2038 pci_write_config_byte(dev, 0xF4, reg | 0x02); 2039 } 2040 } 2041 2042 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, 2043 quirk_unhide_mch_dev6); 2044 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, 2045 quirk_unhide_mch_dev6); 2046 2047 2048 #ifdef CONFIG_PCI_MSI 2049 /* Some chipsets do not support MSI. We cannot easily rely on setting 2050 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually 2051 * some other busses controlled by the chipset even if Linux is not 2052 * aware of it. Instead of setting the flag on all busses in the 2053 * machine, simply disable MSI globally. 2054 */ 2055 static void __init quirk_disable_all_msi(struct pci_dev *dev) 2056 { 2057 pci_no_msi(); 2058 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n"); 2059 } 2060 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi); 2061 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi); 2062 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi); 2063 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi); 2064 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi); 2065 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); 2066 2067 /* Disable MSI on chipsets that are known to not support it */ 2068 static void __devinit quirk_disable_msi(struct pci_dev *dev) 2069 { 2070 if (dev->subordinate) { 2071 dev_warn(&dev->dev, "MSI quirk detected; " 2072 "subordinate MSI disabled\n"); 2073 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2074 } 2075 } 2076 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); 2077 2078 /* Go through the list of Hypertransport capabilities and 2079 * return 1 if a HT MSI capability is found and enabled */ 2080 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev) 2081 { 2082 int pos, ttl = 48; 2083 2084 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2085 while (pos && ttl--) { 2086 u8 flags; 2087 2088 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2089 &flags) == 0) 2090 { 2091 dev_info(&dev->dev, "Found %s HT MSI Mapping\n", 2092 flags & HT_MSI_FLAGS_ENABLE ? 2093 "enabled" : "disabled"); 2094 return (flags & HT_MSI_FLAGS_ENABLE) != 0; 2095 } 2096 2097 pos = pci_find_next_ht_capability(dev, pos, 2098 HT_CAPTYPE_MSI_MAPPING); 2099 } 2100 return 0; 2101 } 2102 2103 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */ 2104 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev) 2105 { 2106 if (dev->subordinate && !msi_ht_cap_enabled(dev)) { 2107 dev_warn(&dev->dev, "MSI quirk detected; " 2108 "subordinate MSI disabled\n"); 2109 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2110 } 2111 } 2112 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE, 2113 quirk_msi_ht_cap); 2114 2115 /* The nVidia CK804 chipset may have 2 HT MSI mappings. 2116 * MSI are supported if the MSI capability set in any of these mappings. 2117 */ 2118 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev) 2119 { 2120 struct pci_dev *pdev; 2121 2122 if (!dev->subordinate) 2123 return; 2124 2125 /* check HT MSI cap on this chipset and the root one. 2126 * a single one having MSI is enough to be sure that MSI are supported. 2127 */ 2128 pdev = pci_get_slot(dev->bus, 0); 2129 if (!pdev) 2130 return; 2131 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) { 2132 dev_warn(&dev->dev, "MSI quirk detected; " 2133 "subordinate MSI disabled\n"); 2134 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2135 } 2136 pci_dev_put(pdev); 2137 } 2138 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2139 quirk_nvidia_ck804_msi_ht_cap); 2140 2141 /* Force enable MSI mapping capability on HT bridges */ 2142 static void __devinit ht_enable_msi_mapping(struct pci_dev *dev) 2143 { 2144 int pos, ttl = 48; 2145 2146 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2147 while (pos && ttl--) { 2148 u8 flags; 2149 2150 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2151 &flags) == 0) { 2152 dev_info(&dev->dev, "Enabling HT MSI Mapping\n"); 2153 2154 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2155 flags | HT_MSI_FLAGS_ENABLE); 2156 } 2157 pos = pci_find_next_ht_capability(dev, pos, 2158 HT_CAPTYPE_MSI_MAPPING); 2159 } 2160 } 2161 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, 2162 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB, 2163 ht_enable_msi_mapping); 2164 2165 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, 2166 ht_enable_msi_mapping); 2167 2168 /* The P5N32-SLI Premium motherboard from Asus has a problem with msi 2169 * for the MCP55 NIC. It is not yet determined whether the msi problem 2170 * also affects other devices. As for now, turn off msi for this device. 2171 */ 2172 static void __devinit nvenet_msi_disable(struct pci_dev *dev) 2173 { 2174 if (dmi_name_in_vendors("P5N32-SLI PREMIUM")) { 2175 dev_info(&dev->dev, 2176 "Disabling msi for MCP55 NIC on P5N32-SLI Premium\n"); 2177 dev->no_msi = 1; 2178 } 2179 } 2180 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2181 PCI_DEVICE_ID_NVIDIA_NVENET_15, 2182 nvenet_msi_disable); 2183 2184 static int __devinit ht_check_msi_mapping(struct pci_dev *dev) 2185 { 2186 int pos, ttl = 48; 2187 int found = 0; 2188 2189 /* check if there is HT MSI cap or enabled on this device */ 2190 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2191 while (pos && ttl--) { 2192 u8 flags; 2193 2194 if (found < 1) 2195 found = 1; 2196 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2197 &flags) == 0) { 2198 if (flags & HT_MSI_FLAGS_ENABLE) { 2199 if (found < 2) { 2200 found = 2; 2201 break; 2202 } 2203 } 2204 } 2205 pos = pci_find_next_ht_capability(dev, pos, 2206 HT_CAPTYPE_MSI_MAPPING); 2207 } 2208 2209 return found; 2210 } 2211 2212 static int __devinit host_bridge_with_leaf(struct pci_dev *host_bridge) 2213 { 2214 struct pci_dev *dev; 2215 int pos; 2216 int i, dev_no; 2217 int found = 0; 2218 2219 dev_no = host_bridge->devfn >> 3; 2220 for (i = dev_no + 1; i < 0x20; i++) { 2221 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0)); 2222 if (!dev) 2223 continue; 2224 2225 /* found next host bridge ?*/ 2226 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2227 if (pos != 0) { 2228 pci_dev_put(dev); 2229 break; 2230 } 2231 2232 if (ht_check_msi_mapping(dev)) { 2233 found = 1; 2234 pci_dev_put(dev); 2235 break; 2236 } 2237 pci_dev_put(dev); 2238 } 2239 2240 return found; 2241 } 2242 2243 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */ 2244 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */ 2245 2246 static int __devinit is_end_of_ht_chain(struct pci_dev *dev) 2247 { 2248 int pos, ctrl_off; 2249 int end = 0; 2250 u16 flags, ctrl; 2251 2252 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2253 2254 if (!pos) 2255 goto out; 2256 2257 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags); 2258 2259 ctrl_off = ((flags >> 10) & 1) ? 2260 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1; 2261 pci_read_config_word(dev, pos + ctrl_off, &ctrl); 2262 2263 if (ctrl & (1 << 6)) 2264 end = 1; 2265 2266 out: 2267 return end; 2268 } 2269 2270 static void __devinit nv_ht_enable_msi_mapping(struct pci_dev *dev) 2271 { 2272 struct pci_dev *host_bridge; 2273 int pos; 2274 int i, dev_no; 2275 int found = 0; 2276 2277 dev_no = dev->devfn >> 3; 2278 for (i = dev_no; i >= 0; i--) { 2279 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0)); 2280 if (!host_bridge) 2281 continue; 2282 2283 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2284 if (pos != 0) { 2285 found = 1; 2286 break; 2287 } 2288 pci_dev_put(host_bridge); 2289 } 2290 2291 if (!found) 2292 return; 2293 2294 /* don't enable end_device/host_bridge with leaf directly here */ 2295 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) && 2296 host_bridge_with_leaf(host_bridge)) 2297 goto out; 2298 2299 /* root did that ! */ 2300 if (msi_ht_cap_enabled(host_bridge)) 2301 goto out; 2302 2303 ht_enable_msi_mapping(dev); 2304 2305 out: 2306 pci_dev_put(host_bridge); 2307 } 2308 2309 static void __devinit ht_disable_msi_mapping(struct pci_dev *dev) 2310 { 2311 int pos, ttl = 48; 2312 2313 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2314 while (pos && ttl--) { 2315 u8 flags; 2316 2317 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2318 &flags) == 0) { 2319 dev_info(&dev->dev, "Disabling HT MSI Mapping\n"); 2320 2321 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2322 flags & ~HT_MSI_FLAGS_ENABLE); 2323 } 2324 pos = pci_find_next_ht_capability(dev, pos, 2325 HT_CAPTYPE_MSI_MAPPING); 2326 } 2327 } 2328 2329 static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all) 2330 { 2331 struct pci_dev *host_bridge; 2332 int pos; 2333 int found; 2334 2335 /* check if there is HT MSI cap or enabled on this device */ 2336 found = ht_check_msi_mapping(dev); 2337 2338 /* no HT MSI CAP */ 2339 if (found == 0) 2340 return; 2341 2342 /* 2343 * HT MSI mapping should be disabled on devices that are below 2344 * a non-Hypertransport host bridge. Locate the host bridge... 2345 */ 2346 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); 2347 if (host_bridge == NULL) { 2348 dev_warn(&dev->dev, 2349 "nv_msi_ht_cap_quirk didn't locate host bridge\n"); 2350 return; 2351 } 2352 2353 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2354 if (pos != 0) { 2355 /* Host bridge is to HT */ 2356 if (found == 1) { 2357 /* it is not enabled, try to enable it */ 2358 if (all) 2359 ht_enable_msi_mapping(dev); 2360 else 2361 nv_ht_enable_msi_mapping(dev); 2362 } 2363 return; 2364 } 2365 2366 /* HT MSI is not enabled */ 2367 if (found == 1) 2368 return; 2369 2370 /* Host bridge is not to HT, disable HT MSI mapping on this device */ 2371 ht_disable_msi_mapping(dev); 2372 } 2373 2374 static void __devinit nv_msi_ht_cap_quirk_all(struct pci_dev *dev) 2375 { 2376 return __nv_msi_ht_cap_quirk(dev, 1); 2377 } 2378 2379 static void __devinit nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev) 2380 { 2381 return __nv_msi_ht_cap_quirk(dev, 0); 2382 } 2383 2384 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 2385 2386 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 2387 2388 static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev) 2389 { 2390 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 2391 } 2392 static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev) 2393 { 2394 struct pci_dev *p; 2395 2396 /* SB700 MSI issue will be fixed at HW level from revision A21, 2397 * we need check PCI REVISION ID of SMBus controller to get SB700 2398 * revision. 2399 */ 2400 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS, 2401 NULL); 2402 if (!p) 2403 return; 2404 2405 if ((p->revision < 0x3B) && (p->revision >= 0x30)) 2406 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 2407 pci_dev_put(p); 2408 } 2409 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2410 PCI_DEVICE_ID_TIGON3_5780, 2411 quirk_msi_intx_disable_bug); 2412 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2413 PCI_DEVICE_ID_TIGON3_5780S, 2414 quirk_msi_intx_disable_bug); 2415 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2416 PCI_DEVICE_ID_TIGON3_5714, 2417 quirk_msi_intx_disable_bug); 2418 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2419 PCI_DEVICE_ID_TIGON3_5714S, 2420 quirk_msi_intx_disable_bug); 2421 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2422 PCI_DEVICE_ID_TIGON3_5715, 2423 quirk_msi_intx_disable_bug); 2424 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2425 PCI_DEVICE_ID_TIGON3_5715S, 2426 quirk_msi_intx_disable_bug); 2427 2428 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390, 2429 quirk_msi_intx_disable_ati_bug); 2430 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391, 2431 quirk_msi_intx_disable_ati_bug); 2432 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392, 2433 quirk_msi_intx_disable_ati_bug); 2434 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393, 2435 quirk_msi_intx_disable_ati_bug); 2436 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394, 2437 quirk_msi_intx_disable_ati_bug); 2438 2439 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373, 2440 quirk_msi_intx_disable_bug); 2441 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374, 2442 quirk_msi_intx_disable_bug); 2443 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375, 2444 quirk_msi_intx_disable_bug); 2445 2446 #endif /* CONFIG_PCI_MSI */ 2447 2448 #ifdef CONFIG_PCI_IOV 2449 2450 /* 2451 * For Intel 82576 SR-IOV NIC, if BIOS doesn't allocate resources for the 2452 * SR-IOV BARs, zero the Flash BAR and program the SR-IOV BARs to use the 2453 * old Flash Memory Space. 2454 */ 2455 static void __devinit quirk_i82576_sriov(struct pci_dev *dev) 2456 { 2457 int pos, flags; 2458 u32 bar, start, size; 2459 2460 if (PAGE_SIZE > 0x10000) 2461 return; 2462 2463 flags = pci_resource_flags(dev, 0); 2464 if ((flags & PCI_BASE_ADDRESS_SPACE) != 2465 PCI_BASE_ADDRESS_SPACE_MEMORY || 2466 (flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) != 2467 PCI_BASE_ADDRESS_MEM_TYPE_32) 2468 return; 2469 2470 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV); 2471 if (!pos) 2472 return; 2473 2474 pci_read_config_dword(dev, pos + PCI_SRIOV_BAR, &bar); 2475 if (bar & PCI_BASE_ADDRESS_MEM_MASK) 2476 return; 2477 2478 start = pci_resource_start(dev, 1); 2479 size = pci_resource_len(dev, 1); 2480 if (!start || size != 0x400000 || start & (size - 1)) 2481 return; 2482 2483 pci_resource_flags(dev, 1) = 0; 2484 pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0); 2485 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR, start); 2486 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR + 12, start + size / 2); 2487 2488 dev_info(&dev->dev, "use Flash Memory Space for SR-IOV BARs\n"); 2489 } 2490 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10c9, quirk_i82576_sriov); 2491 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e6, quirk_i82576_sriov); 2492 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e7, quirk_i82576_sriov); 2493 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e8, quirk_i82576_sriov); 2494 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150a, quirk_i82576_sriov); 2495 2496 #endif /* CONFIG_PCI_IOV */ 2497 2498 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, 2499 struct pci_fixup *end) 2500 { 2501 while (f < end) { 2502 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) && 2503 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) { 2504 dev_dbg(&dev->dev, "calling %pF\n", f->hook); 2505 f->hook(dev); 2506 } 2507 f++; 2508 } 2509 } 2510 2511 extern struct pci_fixup __start_pci_fixups_early[]; 2512 extern struct pci_fixup __end_pci_fixups_early[]; 2513 extern struct pci_fixup __start_pci_fixups_header[]; 2514 extern struct pci_fixup __end_pci_fixups_header[]; 2515 extern struct pci_fixup __start_pci_fixups_final[]; 2516 extern struct pci_fixup __end_pci_fixups_final[]; 2517 extern struct pci_fixup __start_pci_fixups_enable[]; 2518 extern struct pci_fixup __end_pci_fixups_enable[]; 2519 extern struct pci_fixup __start_pci_fixups_resume[]; 2520 extern struct pci_fixup __end_pci_fixups_resume[]; 2521 extern struct pci_fixup __start_pci_fixups_resume_early[]; 2522 extern struct pci_fixup __end_pci_fixups_resume_early[]; 2523 extern struct pci_fixup __start_pci_fixups_suspend[]; 2524 extern struct pci_fixup __end_pci_fixups_suspend[]; 2525 2526 2527 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) 2528 { 2529 struct pci_fixup *start, *end; 2530 2531 switch(pass) { 2532 case pci_fixup_early: 2533 start = __start_pci_fixups_early; 2534 end = __end_pci_fixups_early; 2535 break; 2536 2537 case pci_fixup_header: 2538 start = __start_pci_fixups_header; 2539 end = __end_pci_fixups_header; 2540 break; 2541 2542 case pci_fixup_final: 2543 start = __start_pci_fixups_final; 2544 end = __end_pci_fixups_final; 2545 break; 2546 2547 case pci_fixup_enable: 2548 start = __start_pci_fixups_enable; 2549 end = __end_pci_fixups_enable; 2550 break; 2551 2552 case pci_fixup_resume: 2553 start = __start_pci_fixups_resume; 2554 end = __end_pci_fixups_resume; 2555 break; 2556 2557 case pci_fixup_resume_early: 2558 start = __start_pci_fixups_resume_early; 2559 end = __end_pci_fixups_resume_early; 2560 break; 2561 2562 case pci_fixup_suspend: 2563 start = __start_pci_fixups_suspend; 2564 end = __end_pci_fixups_suspend; 2565 break; 2566 2567 default: 2568 /* stupid compiler warning, you would think with an enum... */ 2569 return; 2570 } 2571 pci_do_fixups(dev, start, end); 2572 } 2573 #else 2574 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {} 2575 #endif 2576 EXPORT_SYMBOL(pci_fixup_device); 2577