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/export.h> 21 #include <linux/pci.h> 22 #include <linux/init.h> 23 #include <linux/delay.h> 24 #include <linux/acpi.h> 25 #include <linux/kallsyms.h> 26 #include <linux/dmi.h> 27 #include <linux/pci-aspm.h> 28 #include <linux/ioport.h> 29 #include <linux/sched.h> 30 #include <linux/ktime.h> 31 #include <asm/dma.h> /* isa_dma_bridge_buggy */ 32 #include "pci.h" 33 34 /* 35 * Decoding should be disabled for a PCI device during BAR sizing to avoid 36 * conflict. But doing so may cause problems on host bridge and perhaps other 37 * key system devices. For devices that need to have mmio decoding always-on, 38 * we need to set the dev->mmio_always_on bit. 39 */ 40 static void quirk_mmio_always_on(struct pci_dev *dev) 41 { 42 dev->mmio_always_on = 1; 43 } 44 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID, 45 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on); 46 47 /* The Mellanox Tavor device gives false positive parity errors 48 * Mark this device with a broken_parity_status, to allow 49 * PCI scanning code to "skip" this now blacklisted device. 50 */ 51 static void quirk_mellanox_tavor(struct pci_dev *dev) 52 { 53 dev->broken_parity_status = 1; /* This device gives false positives */ 54 } 55 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor); 56 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor); 57 58 /* Deal with broken BIOS'es that neglect to enable passive release, 59 which can cause problems in combination with the 82441FX/PPro MTRRs */ 60 static void quirk_passive_release(struct pci_dev *dev) 61 { 62 struct pci_dev *d = NULL; 63 unsigned char dlc; 64 65 /* We have to make sure a particular bit is set in the PIIX3 66 ISA bridge, so we have to go out and find it. */ 67 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) { 68 pci_read_config_byte(d, 0x82, &dlc); 69 if (!(dlc & 1<<1)) { 70 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n"); 71 dlc |= 1<<1; 72 pci_write_config_byte(d, 0x82, dlc); 73 } 74 } 75 } 76 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 77 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 78 79 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround 80 but VIA don't answer queries. If you happen to have good contacts at VIA 81 ask them for me please -- Alan 82 83 This appears to be BIOS not version dependent. So presumably there is a 84 chipset level fix */ 85 86 static void quirk_isa_dma_hangs(struct pci_dev *dev) 87 { 88 if (!isa_dma_bridge_buggy) { 89 isa_dma_bridge_buggy=1; 90 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n"); 91 } 92 } 93 /* 94 * Its not totally clear which chipsets are the problematic ones 95 * We know 82C586 and 82C596 variants are affected. 96 */ 97 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs); 98 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs); 99 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs); 100 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs); 101 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs); 102 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs); 103 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs); 104 105 /* 106 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear 107 * for some HT machines to use C4 w/o hanging. 108 */ 109 static void quirk_tigerpoint_bm_sts(struct pci_dev *dev) 110 { 111 u32 pmbase; 112 u16 pm1a; 113 114 pci_read_config_dword(dev, 0x40, &pmbase); 115 pmbase = pmbase & 0xff80; 116 pm1a = inw(pmbase); 117 118 if (pm1a & 0x10) { 119 dev_info(&dev->dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n"); 120 outw(0x10, pmbase); 121 } 122 } 123 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts); 124 125 /* 126 * Chipsets where PCI->PCI transfers vanish or hang 127 */ 128 static void quirk_nopcipci(struct pci_dev *dev) 129 { 130 if ((pci_pci_problems & PCIPCI_FAIL)==0) { 131 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n"); 132 pci_pci_problems |= PCIPCI_FAIL; 133 } 134 } 135 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci); 136 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci); 137 138 static void quirk_nopciamd(struct pci_dev *dev) 139 { 140 u8 rev; 141 pci_read_config_byte(dev, 0x08, &rev); 142 if (rev == 0x13) { 143 /* Erratum 24 */ 144 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n"); 145 pci_pci_problems |= PCIAGP_FAIL; 146 } 147 } 148 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd); 149 150 /* 151 * Triton requires workarounds to be used by the drivers 152 */ 153 static void quirk_triton(struct pci_dev *dev) 154 { 155 if ((pci_pci_problems&PCIPCI_TRITON)==0) { 156 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 157 pci_pci_problems |= PCIPCI_TRITON; 158 } 159 } 160 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton); 161 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton); 162 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton); 163 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton); 164 165 /* 166 * VIA Apollo KT133 needs PCI latency patch 167 * Made according to a windows driver based patch by George E. Breese 168 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm 169 * and http://www.georgebreese.com/net/software/#PCI 170 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for 171 * the info on which Mr Breese based his work. 172 * 173 * Updated based on further information from the site and also on 174 * information provided by VIA 175 */ 176 static void quirk_vialatency(struct pci_dev *dev) 177 { 178 struct pci_dev *p; 179 u8 busarb; 180 /* Ok we have a potential problem chipset here. Now see if we have 181 a buggy southbridge */ 182 183 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL); 184 if (p!=NULL) { 185 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */ 186 /* Check for buggy part revisions */ 187 if (p->revision < 0x40 || p->revision > 0x42) 188 goto exit; 189 } else { 190 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL); 191 if (p==NULL) /* No problem parts */ 192 goto exit; 193 /* Check for buggy part revisions */ 194 if (p->revision < 0x10 || p->revision > 0x12) 195 goto exit; 196 } 197 198 /* 199 * Ok we have the problem. Now set the PCI master grant to 200 * occur every master grant. The apparent bug is that under high 201 * PCI load (quite common in Linux of course) you can get data 202 * loss when the CPU is held off the bus for 3 bus master requests 203 * This happens to include the IDE controllers.... 204 * 205 * VIA only apply this fix when an SB Live! is present but under 206 * both Linux and Windows this isn't enough, and we have seen 207 * corruption without SB Live! but with things like 3 UDMA IDE 208 * controllers. So we ignore that bit of the VIA recommendation.. 209 */ 210 211 pci_read_config_byte(dev, 0x76, &busarb); 212 /* Set bit 4 and bi 5 of byte 76 to 0x01 213 "Master priority rotation on every PCI master grant */ 214 busarb &= ~(1<<5); 215 busarb |= (1<<4); 216 pci_write_config_byte(dev, 0x76, busarb); 217 dev_info(&dev->dev, "Applying VIA southbridge workaround\n"); 218 exit: 219 pci_dev_put(p); 220 } 221 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 222 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 223 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 224 /* Must restore this on a resume from RAM */ 225 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 226 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 227 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 228 229 /* 230 * VIA Apollo VP3 needs ETBF on BT848/878 231 */ 232 static void quirk_viaetbf(struct pci_dev *dev) 233 { 234 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) { 235 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 236 pci_pci_problems |= PCIPCI_VIAETBF; 237 } 238 } 239 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf); 240 241 static void quirk_vsfx(struct pci_dev *dev) 242 { 243 if ((pci_pci_problems&PCIPCI_VSFX)==0) { 244 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 245 pci_pci_problems |= PCIPCI_VSFX; 246 } 247 } 248 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx); 249 250 /* 251 * Ali Magik requires workarounds to be used by the drivers 252 * that DMA to AGP space. Latency must be set to 0xA and triton 253 * workaround applied too 254 * [Info kindly provided by ALi] 255 */ 256 static void quirk_alimagik(struct pci_dev *dev) 257 { 258 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) { 259 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 260 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON; 261 } 262 } 263 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik); 264 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik); 265 266 /* 267 * Natoma has some interesting boundary conditions with Zoran stuff 268 * at least 269 */ 270 static void quirk_natoma(struct pci_dev *dev) 271 { 272 if ((pci_pci_problems&PCIPCI_NATOMA)==0) { 273 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); 274 pci_pci_problems |= PCIPCI_NATOMA; 275 } 276 } 277 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma); 278 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma); 279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma); 280 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma); 281 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma); 282 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma); 283 284 /* 285 * This chip can cause PCI parity errors if config register 0xA0 is read 286 * while DMAs are occurring. 287 */ 288 static void quirk_citrine(struct pci_dev *dev) 289 { 290 dev->cfg_size = 0xA0; 291 } 292 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine); 293 294 /* 295 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M. 296 * If it's needed, re-allocate the region. 297 */ 298 static void quirk_s3_64M(struct pci_dev *dev) 299 { 300 struct resource *r = &dev->resource[0]; 301 302 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) { 303 r->start = 0; 304 r->end = 0x3ffffff; 305 } 306 } 307 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M); 308 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M); 309 310 /* 311 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS 312 * ver. 1.33 20070103) don't set the correct ISA PCI region header info. 313 * BAR0 should be 8 bytes; instead, it may be set to something like 8k 314 * (which conflicts w/ BAR1's memory range). 315 */ 316 static void quirk_cs5536_vsa(struct pci_dev *dev) 317 { 318 if (pci_resource_len(dev, 0) != 8) { 319 struct resource *res = &dev->resource[0]; 320 res->end = res->start + 8 - 1; 321 dev_info(&dev->dev, "CS5536 ISA bridge bug detected " 322 "(incorrect header); workaround applied.\n"); 323 } 324 } 325 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa); 326 327 static void quirk_io_region(struct pci_dev *dev, unsigned region, 328 unsigned size, int nr, const char *name) 329 { 330 region &= ~(size-1); 331 if (region) { 332 struct pci_bus_region bus_region; 333 struct resource *res = dev->resource + nr; 334 335 res->name = pci_name(dev); 336 res->start = region; 337 res->end = region + size - 1; 338 res->flags = IORESOURCE_IO; 339 340 /* Convert from PCI bus to resource space. */ 341 bus_region.start = res->start; 342 bus_region.end = res->end; 343 pcibios_bus_to_resource(dev, res, &bus_region); 344 345 if (pci_claim_resource(dev, nr) == 0) 346 dev_info(&dev->dev, "quirk: %pR claimed by %s\n", 347 res, name); 348 } 349 } 350 351 /* 352 * ATI Northbridge setups MCE the processor if you even 353 * read somewhere between 0x3b0->0x3bb or read 0x3d3 354 */ 355 static void quirk_ati_exploding_mce(struct pci_dev *dev) 356 { 357 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n"); 358 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */ 359 request_region(0x3b0, 0x0C, "RadeonIGP"); 360 request_region(0x3d3, 0x01, "RadeonIGP"); 361 } 362 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce); 363 364 /* 365 * Let's make the southbridge information explicit instead 366 * of having to worry about people probing the ACPI areas, 367 * for example.. (Yes, it happens, and if you read the wrong 368 * ACPI register it will put the machine to sleep with no 369 * way of waking it up again. Bummer). 370 * 371 * ALI M7101: Two IO regions pointed to by words at 372 * 0xE0 (64 bytes of ACPI registers) 373 * 0xE2 (32 bytes of SMB registers) 374 */ 375 static void quirk_ali7101_acpi(struct pci_dev *dev) 376 { 377 u16 region; 378 379 pci_read_config_word(dev, 0xE0, ®ion); 380 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI"); 381 pci_read_config_word(dev, 0xE2, ®ion); 382 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB"); 383 } 384 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi); 385 386 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 387 { 388 u32 devres; 389 u32 mask, size, base; 390 391 pci_read_config_dword(dev, port, &devres); 392 if ((devres & enable) != enable) 393 return; 394 mask = (devres >> 16) & 15; 395 base = devres & 0xffff; 396 size = 16; 397 for (;;) { 398 unsigned bit = size >> 1; 399 if ((bit & mask) == bit) 400 break; 401 size = bit; 402 } 403 /* 404 * For now we only print it out. Eventually we'll want to 405 * reserve it (at least if it's in the 0x1000+ range), but 406 * let's get enough confirmation reports first. 407 */ 408 base &= -size; 409 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1); 410 } 411 412 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 413 { 414 u32 devres; 415 u32 mask, size, base; 416 417 pci_read_config_dword(dev, port, &devres); 418 if ((devres & enable) != enable) 419 return; 420 base = devres & 0xffff0000; 421 mask = (devres & 0x3f) << 16; 422 size = 128 << 16; 423 for (;;) { 424 unsigned bit = size >> 1; 425 if ((bit & mask) == bit) 426 break; 427 size = bit; 428 } 429 /* 430 * For now we only print it out. Eventually we'll want to 431 * reserve it, but let's get enough confirmation reports first. 432 */ 433 base &= -size; 434 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1); 435 } 436 437 /* 438 * PIIX4 ACPI: Two IO regions pointed to by longwords at 439 * 0x40 (64 bytes of ACPI registers) 440 * 0x90 (16 bytes of SMB registers) 441 * and a few strange programmable PIIX4 device resources. 442 */ 443 static void quirk_piix4_acpi(struct pci_dev *dev) 444 { 445 u32 region, res_a; 446 447 pci_read_config_dword(dev, 0x40, ®ion); 448 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI"); 449 pci_read_config_dword(dev, 0x90, ®ion); 450 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB"); 451 452 /* Device resource A has enables for some of the other ones */ 453 pci_read_config_dword(dev, 0x5c, &res_a); 454 455 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21); 456 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21); 457 458 /* Device resource D is just bitfields for static resources */ 459 460 /* Device 12 enabled? */ 461 if (res_a & (1 << 29)) { 462 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20); 463 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7); 464 } 465 /* Device 13 enabled? */ 466 if (res_a & (1 << 30)) { 467 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20); 468 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7); 469 } 470 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20); 471 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); 472 } 473 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi); 474 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi); 475 476 #define ICH_PMBASE 0x40 477 #define ICH_ACPI_CNTL 0x44 478 #define ICH4_ACPI_EN 0x10 479 #define ICH6_ACPI_EN 0x80 480 #define ICH4_GPIOBASE 0x58 481 #define ICH4_GPIO_CNTL 0x5c 482 #define ICH4_GPIO_EN 0x10 483 #define ICH6_GPIOBASE 0x48 484 #define ICH6_GPIO_CNTL 0x4c 485 #define ICH6_GPIO_EN 0x10 486 487 /* 488 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at 489 * 0x40 (128 bytes of ACPI, GPIO & TCO registers) 490 * 0x58 (64 bytes of GPIO I/O space) 491 */ 492 static void quirk_ich4_lpc_acpi(struct pci_dev *dev) 493 { 494 u32 region; 495 u8 enable; 496 497 /* 498 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict 499 * with low legacy (and fixed) ports. We don't know the decoding 500 * priority and can't tell whether the legacy device or the one created 501 * here is really at that address. This happens on boards with broken 502 * BIOSes. 503 */ 504 505 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); 506 if (enable & ICH4_ACPI_EN) { 507 pci_read_config_dword(dev, ICH_PMBASE, ®ion); 508 region &= PCI_BASE_ADDRESS_IO_MASK; 509 if (region >= PCIBIOS_MIN_IO) 510 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, 511 "ICH4 ACPI/GPIO/TCO"); 512 } 513 514 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable); 515 if (enable & ICH4_GPIO_EN) { 516 pci_read_config_dword(dev, ICH4_GPIOBASE, ®ion); 517 region &= PCI_BASE_ADDRESS_IO_MASK; 518 if (region >= PCIBIOS_MIN_IO) 519 quirk_io_region(dev, region, 64, 520 PCI_BRIDGE_RESOURCES + 1, "ICH4 GPIO"); 521 } 522 } 523 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi); 524 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi); 525 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi); 526 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi); 527 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi); 528 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi); 529 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi); 530 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi); 531 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi); 532 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi); 533 534 static void ich6_lpc_acpi_gpio(struct pci_dev *dev) 535 { 536 u32 region; 537 u8 enable; 538 539 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); 540 if (enable & ICH6_ACPI_EN) { 541 pci_read_config_dword(dev, ICH_PMBASE, ®ion); 542 region &= PCI_BASE_ADDRESS_IO_MASK; 543 if (region >= PCIBIOS_MIN_IO) 544 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, 545 "ICH6 ACPI/GPIO/TCO"); 546 } 547 548 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable); 549 if (enable & ICH6_GPIO_EN) { 550 pci_read_config_dword(dev, ICH6_GPIOBASE, ®ion); 551 region &= PCI_BASE_ADDRESS_IO_MASK; 552 if (region >= PCIBIOS_MIN_IO) 553 quirk_io_region(dev, region, 64, 554 PCI_BRIDGE_RESOURCES + 1, "ICH6 GPIO"); 555 } 556 } 557 558 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize) 559 { 560 u32 val; 561 u32 size, base; 562 563 pci_read_config_dword(dev, reg, &val); 564 565 /* Enabled? */ 566 if (!(val & 1)) 567 return; 568 base = val & 0xfffc; 569 if (dynsize) { 570 /* 571 * This is not correct. It is 16, 32 or 64 bytes depending on 572 * register D31:F0:ADh bits 5:4. 573 * 574 * But this gets us at least _part_ of it. 575 */ 576 size = 16; 577 } else { 578 size = 128; 579 } 580 base &= ~(size-1); 581 582 /* Just print it out for now. We should reserve it after more debugging */ 583 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1); 584 } 585 586 static void quirk_ich6_lpc(struct pci_dev *dev) 587 { 588 /* Shared ACPI/GPIO decode with all ICH6+ */ 589 ich6_lpc_acpi_gpio(dev); 590 591 /* ICH6-specific generic IO decode */ 592 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0); 593 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1); 594 } 595 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc); 596 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc); 597 598 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name) 599 { 600 u32 val; 601 u32 mask, base; 602 603 pci_read_config_dword(dev, reg, &val); 604 605 /* Enabled? */ 606 if (!(val & 1)) 607 return; 608 609 /* 610 * IO base in bits 15:2, mask in bits 23:18, both 611 * are dword-based 612 */ 613 base = val & 0xfffc; 614 mask = (val >> 16) & 0xfc; 615 mask |= 3; 616 617 /* Just print it out for now. We should reserve it after more debugging */ 618 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask); 619 } 620 621 /* ICH7-10 has the same common LPC generic IO decode registers */ 622 static void quirk_ich7_lpc(struct pci_dev *dev) 623 { 624 /* We share the common ACPI/GPIO decode with ICH6 */ 625 ich6_lpc_acpi_gpio(dev); 626 627 /* And have 4 ICH7+ generic decodes */ 628 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1"); 629 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2"); 630 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3"); 631 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4"); 632 } 633 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc); 634 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc); 635 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc); 636 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc); 637 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc); 638 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc); 639 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc); 640 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc); 641 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc); 642 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc); 643 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc); 644 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc); 645 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc); 646 647 /* 648 * VIA ACPI: One IO region pointed to by longword at 649 * 0x48 or 0x20 (256 bytes of ACPI registers) 650 */ 651 static void quirk_vt82c586_acpi(struct pci_dev *dev) 652 { 653 u32 region; 654 655 if (dev->revision & 0x10) { 656 pci_read_config_dword(dev, 0x48, ®ion); 657 region &= PCI_BASE_ADDRESS_IO_MASK; 658 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI"); 659 } 660 } 661 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi); 662 663 /* 664 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at 665 * 0x48 (256 bytes of ACPI registers) 666 * 0x70 (128 bytes of hardware monitoring register) 667 * 0x90 (16 bytes of SMB registers) 668 */ 669 static void quirk_vt82c686_acpi(struct pci_dev *dev) 670 { 671 u16 hm; 672 u32 smb; 673 674 quirk_vt82c586_acpi(dev); 675 676 pci_read_config_word(dev, 0x70, &hm); 677 hm &= PCI_BASE_ADDRESS_IO_MASK; 678 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon"); 679 680 pci_read_config_dword(dev, 0x90, &smb); 681 smb &= PCI_BASE_ADDRESS_IO_MASK; 682 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB"); 683 } 684 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi); 685 686 /* 687 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at 688 * 0x88 (128 bytes of power management registers) 689 * 0xd0 (16 bytes of SMB registers) 690 */ 691 static void quirk_vt8235_acpi(struct pci_dev *dev) 692 { 693 u16 pm, smb; 694 695 pci_read_config_word(dev, 0x88, &pm); 696 pm &= PCI_BASE_ADDRESS_IO_MASK; 697 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM"); 698 699 pci_read_config_word(dev, 0xd0, &smb); 700 smb &= PCI_BASE_ADDRESS_IO_MASK; 701 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB"); 702 } 703 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi); 704 705 /* 706 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back: 707 * Disable fast back-to-back on the secondary bus segment 708 */ 709 static void quirk_xio2000a(struct pci_dev *dev) 710 { 711 struct pci_dev *pdev; 712 u16 command; 713 714 dev_warn(&dev->dev, "TI XIO2000a quirk detected; " 715 "secondary bus fast back-to-back transfers disabled\n"); 716 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) { 717 pci_read_config_word(pdev, PCI_COMMAND, &command); 718 if (command & PCI_COMMAND_FAST_BACK) 719 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK); 720 } 721 } 722 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A, 723 quirk_xio2000a); 724 725 #ifdef CONFIG_X86_IO_APIC 726 727 #include <asm/io_apic.h> 728 729 /* 730 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip 731 * devices to the external APIC. 732 * 733 * TODO: When we have device-specific interrupt routers, 734 * this code will go away from quirks. 735 */ 736 static void quirk_via_ioapic(struct pci_dev *dev) 737 { 738 u8 tmp; 739 740 if (nr_ioapics < 1) 741 tmp = 0; /* nothing routed to external APIC */ 742 else 743 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */ 744 745 dev_info(&dev->dev, "%sbling VIA external APIC routing\n", 746 tmp == 0 ? "Disa" : "Ena"); 747 748 /* Offset 0x58: External APIC IRQ output control */ 749 pci_write_config_byte (dev, 0x58, tmp); 750 } 751 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 752 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 753 754 /* 755 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit. 756 * This leads to doubled level interrupt rates. 757 * Set this bit to get rid of cycle wastage. 758 * Otherwise uncritical. 759 */ 760 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev) 761 { 762 u8 misc_control2; 763 #define BYPASS_APIC_DEASSERT 8 764 765 pci_read_config_byte(dev, 0x5B, &misc_control2); 766 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) { 767 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n"); 768 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT); 769 } 770 } 771 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 772 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 773 774 /* 775 * The AMD io apic can hang the box when an apic irq is masked. 776 * We check all revs >= B0 (yet not in the pre production!) as the bug 777 * is currently marked NoFix 778 * 779 * We have multiple reports of hangs with this chipset that went away with 780 * noapic specified. For the moment we assume it's the erratum. We may be wrong 781 * of course. However the advice is demonstrably good even if so.. 782 */ 783 static void quirk_amd_ioapic(struct pci_dev *dev) 784 { 785 if (dev->revision >= 0x02) { 786 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n"); 787 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n"); 788 } 789 } 790 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic); 791 792 static void quirk_ioapic_rmw(struct pci_dev *dev) 793 { 794 if (dev->devfn == 0 && dev->bus->number == 0) 795 sis_apic_bug = 1; 796 } 797 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw); 798 #endif /* CONFIG_X86_IO_APIC */ 799 800 /* 801 * Some settings of MMRBC can lead to data corruption so block changes. 802 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide 803 */ 804 static void quirk_amd_8131_mmrbc(struct pci_dev *dev) 805 { 806 if (dev->subordinate && dev->revision <= 0x12) { 807 dev_info(&dev->dev, "AMD8131 rev %x detected; " 808 "disabling PCI-X MMRBC\n", dev->revision); 809 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC; 810 } 811 } 812 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc); 813 814 /* 815 * FIXME: it is questionable that quirk_via_acpi 816 * is needed. It shows up as an ISA bridge, and does not 817 * support the PCI_INTERRUPT_LINE register at all. Therefore 818 * it seems like setting the pci_dev's 'irq' to the 819 * value of the ACPI SCI interrupt is only done for convenience. 820 * -jgarzik 821 */ 822 static void quirk_via_acpi(struct pci_dev *d) 823 { 824 /* 825 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42 826 */ 827 u8 irq; 828 pci_read_config_byte(d, 0x42, &irq); 829 irq &= 0xf; 830 if (irq && (irq != 2)) 831 d->irq = irq; 832 } 833 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi); 834 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi); 835 836 837 /* 838 * VIA bridges which have VLink 839 */ 840 841 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18; 842 843 static void quirk_via_bridge(struct pci_dev *dev) 844 { 845 /* See what bridge we have and find the device ranges */ 846 switch (dev->device) { 847 case PCI_DEVICE_ID_VIA_82C686: 848 /* The VT82C686 is special, it attaches to PCI and can have 849 any device number. All its subdevices are functions of 850 that single device. */ 851 via_vlink_dev_lo = PCI_SLOT(dev->devfn); 852 via_vlink_dev_hi = PCI_SLOT(dev->devfn); 853 break; 854 case PCI_DEVICE_ID_VIA_8237: 855 case PCI_DEVICE_ID_VIA_8237A: 856 via_vlink_dev_lo = 15; 857 break; 858 case PCI_DEVICE_ID_VIA_8235: 859 via_vlink_dev_lo = 16; 860 break; 861 case PCI_DEVICE_ID_VIA_8231: 862 case PCI_DEVICE_ID_VIA_8233_0: 863 case PCI_DEVICE_ID_VIA_8233A: 864 case PCI_DEVICE_ID_VIA_8233C_0: 865 via_vlink_dev_lo = 17; 866 break; 867 } 868 } 869 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge); 870 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge); 871 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge); 872 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge); 873 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge); 874 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge); 875 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge); 876 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge); 877 878 /** 879 * quirk_via_vlink - VIA VLink IRQ number update 880 * @dev: PCI device 881 * 882 * If the device we are dealing with is on a PIC IRQ we need to 883 * ensure that the IRQ line register which usually is not relevant 884 * for PCI cards, is actually written so that interrupts get sent 885 * to the right place. 886 * We only do this on systems where a VIA south bridge was detected, 887 * and only for VIA devices on the motherboard (see quirk_via_bridge 888 * above). 889 */ 890 891 static void quirk_via_vlink(struct pci_dev *dev) 892 { 893 u8 irq, new_irq; 894 895 /* Check if we have VLink at all */ 896 if (via_vlink_dev_lo == -1) 897 return; 898 899 new_irq = dev->irq; 900 901 /* Don't quirk interrupts outside the legacy IRQ range */ 902 if (!new_irq || new_irq > 15) 903 return; 904 905 /* Internal device ? */ 906 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi || 907 PCI_SLOT(dev->devfn) < via_vlink_dev_lo) 908 return; 909 910 /* This is an internal VLink device on a PIC interrupt. The BIOS 911 ought to have set this but may not have, so we redo it */ 912 913 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); 914 if (new_irq != irq) { 915 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n", 916 irq, new_irq); 917 udelay(15); /* unknown if delay really needed */ 918 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); 919 } 920 } 921 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink); 922 923 /* 924 * VIA VT82C598 has its device ID settable and many BIOSes 925 * set it to the ID of VT82C597 for backward compatibility. 926 * We need to switch it off to be able to recognize the real 927 * type of the chip. 928 */ 929 static void quirk_vt82c598_id(struct pci_dev *dev) 930 { 931 pci_write_config_byte(dev, 0xfc, 0); 932 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device); 933 } 934 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id); 935 936 /* 937 * CardBus controllers have a legacy base address that enables them 938 * to respond as i82365 pcmcia controllers. We don't want them to 939 * do this even if the Linux CardBus driver is not loaded, because 940 * the Linux i82365 driver does not (and should not) handle CardBus. 941 */ 942 static void quirk_cardbus_legacy(struct pci_dev *dev) 943 { 944 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0); 945 } 946 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID, 947 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy); 948 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, 949 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy); 950 951 /* 952 * Following the PCI ordering rules is optional on the AMD762. I'm not 953 * sure what the designers were smoking but let's not inhale... 954 * 955 * To be fair to AMD, it follows the spec by default, its BIOS people 956 * who turn it off! 957 */ 958 static void quirk_amd_ordering(struct pci_dev *dev) 959 { 960 u32 pcic; 961 pci_read_config_dword(dev, 0x4C, &pcic); 962 if ((pcic&6)!=6) { 963 pcic |= 6; 964 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n"); 965 pci_write_config_dword(dev, 0x4C, pcic); 966 pci_read_config_dword(dev, 0x84, &pcic); 967 pcic |= (1<<23); /* Required in this mode */ 968 pci_write_config_dword(dev, 0x84, pcic); 969 } 970 } 971 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 972 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 973 974 /* 975 * DreamWorks provided workaround for Dunord I-3000 problem 976 * 977 * This card decodes and responds to addresses not apparently 978 * assigned to it. We force a larger allocation to ensure that 979 * nothing gets put too close to it. 980 */ 981 static void quirk_dunord(struct pci_dev *dev) 982 { 983 struct resource *r = &dev->resource [1]; 984 r->start = 0; 985 r->end = 0xffffff; 986 } 987 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord); 988 989 /* 990 * i82380FB mobile docking controller: its PCI-to-PCI bridge 991 * is subtractive decoding (transparent), and does indicate this 992 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80 993 * instead of 0x01. 994 */ 995 static void quirk_transparent_bridge(struct pci_dev *dev) 996 { 997 dev->transparent = 1; 998 } 999 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge); 1000 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge); 1001 1002 /* 1003 * Common misconfiguration of the MediaGX/Geode PCI master that will 1004 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 1005 * datasheets found at http://www.national.com/analog for info on what 1006 * these bits do. <christer@weinigel.se> 1007 */ 1008 static void quirk_mediagx_master(struct pci_dev *dev) 1009 { 1010 u8 reg; 1011 pci_read_config_byte(dev, 0x41, ®); 1012 if (reg & 2) { 1013 reg &= ~2; 1014 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg); 1015 pci_write_config_byte(dev, 0x41, reg); 1016 } 1017 } 1018 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 1019 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 1020 1021 /* 1022 * Ensure C0 rev restreaming is off. This is normally done by 1023 * the BIOS but in the odd case it is not the results are corruption 1024 * hence the presence of a Linux check 1025 */ 1026 static void quirk_disable_pxb(struct pci_dev *pdev) 1027 { 1028 u16 config; 1029 1030 if (pdev->revision != 0x04) /* Only C0 requires this */ 1031 return; 1032 pci_read_config_word(pdev, 0x40, &config); 1033 if (config & (1<<6)) { 1034 config &= ~(1<<6); 1035 pci_write_config_word(pdev, 0x40, config); 1036 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n"); 1037 } 1038 } 1039 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 1040 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 1041 1042 static void quirk_amd_ide_mode(struct pci_dev *pdev) 1043 { 1044 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */ 1045 u8 tmp; 1046 1047 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp); 1048 if (tmp == 0x01) { 1049 pci_read_config_byte(pdev, 0x40, &tmp); 1050 pci_write_config_byte(pdev, 0x40, tmp|1); 1051 pci_write_config_byte(pdev, 0x9, 1); 1052 pci_write_config_byte(pdev, 0xa, 6); 1053 pci_write_config_byte(pdev, 0x40, tmp); 1054 1055 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI; 1056 dev_info(&pdev->dev, "set SATA to AHCI mode\n"); 1057 } 1058 } 1059 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1060 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1061 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1062 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1063 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); 1064 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); 1065 1066 /* 1067 * Serverworks CSB5 IDE does not fully support native mode 1068 */ 1069 static void quirk_svwks_csb5ide(struct pci_dev *pdev) 1070 { 1071 u8 prog; 1072 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1073 if (prog & 5) { 1074 prog &= ~5; 1075 pdev->class &= ~5; 1076 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1077 /* PCI layer will sort out resources */ 1078 } 1079 } 1080 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide); 1081 1082 /* 1083 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same 1084 */ 1085 static void quirk_ide_samemode(struct pci_dev *pdev) 1086 { 1087 u8 prog; 1088 1089 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1090 1091 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) { 1092 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n"); 1093 prog &= ~5; 1094 pdev->class &= ~5; 1095 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1096 } 1097 } 1098 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode); 1099 1100 /* 1101 * Some ATA devices break if put into D3 1102 */ 1103 1104 static void quirk_no_ata_d3(struct pci_dev *pdev) 1105 { 1106 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3; 1107 } 1108 /* Quirk the legacy ATA devices only. The AHCI ones are ok */ 1109 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, 1110 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); 1111 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, 1112 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); 1113 /* ALi loses some register settings that we cannot then restore */ 1114 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, 1115 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); 1116 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures 1117 occur when mode detecting */ 1118 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, 1119 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); 1120 1121 /* This was originally an Alpha specific thing, but it really fits here. 1122 * The i82375 PCI/EISA bridge appears as non-classified. Fix that. 1123 */ 1124 static void quirk_eisa_bridge(struct pci_dev *dev) 1125 { 1126 dev->class = PCI_CLASS_BRIDGE_EISA << 8; 1127 } 1128 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge); 1129 1130 1131 /* 1132 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge 1133 * is not activated. The myth is that Asus said that they do not want the 1134 * users to be irritated by just another PCI Device in the Win98 device 1135 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors 1136 * package 2.7.0 for details) 1137 * 1138 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC 1139 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it 1140 * becomes necessary to do this tweak in two steps -- the chosen trigger 1141 * is either the Host bridge (preferred) or on-board VGA controller. 1142 * 1143 * Note that we used to unhide the SMBus that way on Toshiba laptops 1144 * (Satellite A40 and Tecra M2) but then found that the thermal management 1145 * was done by SMM code, which could cause unsynchronized concurrent 1146 * accesses to the SMBus registers, with potentially bad effects. Thus you 1147 * should be very careful when adding new entries: if SMM is accessing the 1148 * Intel SMBus, this is a very good reason to leave it hidden. 1149 * 1150 * Likewise, many recent laptops use ACPI for thermal management. If the 1151 * ACPI DSDT code accesses the SMBus, then Linux should not access it 1152 * natively, and keeping the SMBus hidden is the right thing to do. If you 1153 * are about to add an entry in the table below, please first disassemble 1154 * the DSDT and double-check that there is no code accessing the SMBus. 1155 */ 1156 static int asus_hides_smbus; 1157 1158 static void asus_hides_smbus_hostbridge(struct pci_dev *dev) 1159 { 1160 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1161 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB) 1162 switch(dev->subsystem_device) { 1163 case 0x8025: /* P4B-LX */ 1164 case 0x8070: /* P4B */ 1165 case 0x8088: /* P4B533 */ 1166 case 0x1626: /* L3C notebook */ 1167 asus_hides_smbus = 1; 1168 } 1169 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) 1170 switch(dev->subsystem_device) { 1171 case 0x80b1: /* P4GE-V */ 1172 case 0x80b2: /* P4PE */ 1173 case 0x8093: /* P4B533-V */ 1174 asus_hides_smbus = 1; 1175 } 1176 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB) 1177 switch(dev->subsystem_device) { 1178 case 0x8030: /* P4T533 */ 1179 asus_hides_smbus = 1; 1180 } 1181 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0) 1182 switch (dev->subsystem_device) { 1183 case 0x8070: /* P4G8X Deluxe */ 1184 asus_hides_smbus = 1; 1185 } 1186 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH) 1187 switch (dev->subsystem_device) { 1188 case 0x80c9: /* PU-DLS */ 1189 asus_hides_smbus = 1; 1190 } 1191 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB) 1192 switch (dev->subsystem_device) { 1193 case 0x1751: /* M2N notebook */ 1194 case 0x1821: /* M5N notebook */ 1195 case 0x1897: /* A6L notebook */ 1196 asus_hides_smbus = 1; 1197 } 1198 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1199 switch (dev->subsystem_device) { 1200 case 0x184b: /* W1N notebook */ 1201 case 0x186a: /* M6Ne notebook */ 1202 asus_hides_smbus = 1; 1203 } 1204 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1205 switch (dev->subsystem_device) { 1206 case 0x80f2: /* P4P800-X */ 1207 asus_hides_smbus = 1; 1208 } 1209 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) 1210 switch (dev->subsystem_device) { 1211 case 0x1882: /* M6V notebook */ 1212 case 0x1977: /* A6VA notebook */ 1213 asus_hides_smbus = 1; 1214 } 1215 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) { 1216 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1217 switch(dev->subsystem_device) { 1218 case 0x088C: /* HP Compaq nc8000 */ 1219 case 0x0890: /* HP Compaq nc6000 */ 1220 asus_hides_smbus = 1; 1221 } 1222 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1223 switch (dev->subsystem_device) { 1224 case 0x12bc: /* HP D330L */ 1225 case 0x12bd: /* HP D530 */ 1226 case 0x006a: /* HP Compaq nx9500 */ 1227 asus_hides_smbus = 1; 1228 } 1229 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB) 1230 switch (dev->subsystem_device) { 1231 case 0x12bf: /* HP xw4100 */ 1232 asus_hides_smbus = 1; 1233 } 1234 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) { 1235 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1236 switch(dev->subsystem_device) { 1237 case 0xC00C: /* Samsung P35 notebook */ 1238 asus_hides_smbus = 1; 1239 } 1240 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) { 1241 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1242 switch(dev->subsystem_device) { 1243 case 0x0058: /* Compaq Evo N620c */ 1244 asus_hides_smbus = 1; 1245 } 1246 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3) 1247 switch(dev->subsystem_device) { 1248 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */ 1249 /* Motherboard doesn't have Host bridge 1250 * subvendor/subdevice IDs, therefore checking 1251 * its on-board VGA controller */ 1252 asus_hides_smbus = 1; 1253 } 1254 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2) 1255 switch(dev->subsystem_device) { 1256 case 0x00b8: /* Compaq Evo D510 CMT */ 1257 case 0x00b9: /* Compaq Evo D510 SFF */ 1258 case 0x00ba: /* Compaq Evo D510 USDT */ 1259 /* Motherboard doesn't have Host bridge 1260 * subvendor/subdevice IDs and on-board VGA 1261 * controller is disabled if an AGP card is 1262 * inserted, therefore checking USB UHCI 1263 * Controller #1 */ 1264 asus_hides_smbus = 1; 1265 } 1266 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC) 1267 switch (dev->subsystem_device) { 1268 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */ 1269 /* Motherboard doesn't have host bridge 1270 * subvendor/subdevice IDs, therefore checking 1271 * its on-board VGA controller */ 1272 asus_hides_smbus = 1; 1273 } 1274 } 1275 } 1276 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge); 1277 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge); 1278 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge); 1279 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge); 1280 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge); 1281 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge); 1282 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge); 1283 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge); 1284 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge); 1285 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge); 1286 1287 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge); 1288 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge); 1289 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge); 1290 1291 static void asus_hides_smbus_lpc(struct pci_dev *dev) 1292 { 1293 u16 val; 1294 1295 if (likely(!asus_hides_smbus)) 1296 return; 1297 1298 pci_read_config_word(dev, 0xF2, &val); 1299 if (val & 0x8) { 1300 pci_write_config_word(dev, 0xF2, val & (~0x8)); 1301 pci_read_config_word(dev, 0xF2, &val); 1302 if (val & 0x8) 1303 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val); 1304 else 1305 dev_info(&dev->dev, "Enabled i801 SMBus device\n"); 1306 } 1307 } 1308 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1309 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1310 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1311 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1312 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1313 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1314 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1315 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1316 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1317 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1318 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1319 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1320 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1321 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1322 1323 /* It appears we just have one such device. If not, we have a warning */ 1324 static void __iomem *asus_rcba_base; 1325 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev) 1326 { 1327 u32 rcba; 1328 1329 if (likely(!asus_hides_smbus)) 1330 return; 1331 WARN_ON(asus_rcba_base); 1332 1333 pci_read_config_dword(dev, 0xF0, &rcba); 1334 /* use bits 31:14, 16 kB aligned */ 1335 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); 1336 if (asus_rcba_base == NULL) 1337 return; 1338 } 1339 1340 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev) 1341 { 1342 u32 val; 1343 1344 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1345 return; 1346 /* read the Function Disable register, dword mode only */ 1347 val = readl(asus_rcba_base + 0x3418); 1348 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */ 1349 } 1350 1351 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev) 1352 { 1353 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1354 return; 1355 iounmap(asus_rcba_base); 1356 asus_rcba_base = NULL; 1357 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n"); 1358 } 1359 1360 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev) 1361 { 1362 asus_hides_smbus_lpc_ich6_suspend(dev); 1363 asus_hides_smbus_lpc_ich6_resume_early(dev); 1364 asus_hides_smbus_lpc_ich6_resume(dev); 1365 } 1366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6); 1367 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend); 1368 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume); 1369 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early); 1370 1371 /* 1372 * SiS 96x south bridge: BIOS typically hides SMBus device... 1373 */ 1374 static void quirk_sis_96x_smbus(struct pci_dev *dev) 1375 { 1376 u8 val = 0; 1377 pci_read_config_byte(dev, 0x77, &val); 1378 if (val & 0x10) { 1379 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n"); 1380 pci_write_config_byte(dev, 0x77, val & ~0x10); 1381 } 1382 } 1383 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1384 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1385 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1386 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1387 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1388 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1389 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1390 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1391 1392 /* 1393 * ... This is further complicated by the fact that some SiS96x south 1394 * bridges pretend to be 85C503/5513 instead. In that case see if we 1395 * spotted a compatible north bridge to make sure. 1396 * (pci_find_device doesn't work yet) 1397 * 1398 * We can also enable the sis96x bit in the discovery register.. 1399 */ 1400 #define SIS_DETECT_REGISTER 0x40 1401 1402 static void quirk_sis_503(struct pci_dev *dev) 1403 { 1404 u8 reg; 1405 u16 devid; 1406 1407 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®); 1408 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6)); 1409 pci_read_config_word(dev, PCI_DEVICE_ID, &devid); 1410 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) { 1411 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg); 1412 return; 1413 } 1414 1415 /* 1416 * Ok, it now shows up as a 96x.. run the 96x quirk by 1417 * hand in case it has already been processed. 1418 * (depends on link order, which is apparently not guaranteed) 1419 */ 1420 dev->device = devid; 1421 quirk_sis_96x_smbus(dev); 1422 } 1423 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1424 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1425 1426 1427 /* 1428 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller 1429 * and MC97 modem controller are disabled when a second PCI soundcard is 1430 * present. This patch, tweaking the VT8237 ISA bridge, enables them. 1431 * -- bjd 1432 */ 1433 static void asus_hides_ac97_lpc(struct pci_dev *dev) 1434 { 1435 u8 val; 1436 int asus_hides_ac97 = 0; 1437 1438 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1439 if (dev->device == PCI_DEVICE_ID_VIA_8237) 1440 asus_hides_ac97 = 1; 1441 } 1442 1443 if (!asus_hides_ac97) 1444 return; 1445 1446 pci_read_config_byte(dev, 0x50, &val); 1447 if (val & 0xc0) { 1448 pci_write_config_byte(dev, 0x50, val & (~0xc0)); 1449 pci_read_config_byte(dev, 0x50, &val); 1450 if (val & 0xc0) 1451 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val); 1452 else 1453 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n"); 1454 } 1455 } 1456 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1457 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1458 1459 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) 1460 1461 /* 1462 * If we are using libata we can drive this chip properly but must 1463 * do this early on to make the additional device appear during 1464 * the PCI scanning. 1465 */ 1466 static void quirk_jmicron_ata(struct pci_dev *pdev) 1467 { 1468 u32 conf1, conf5, class; 1469 u8 hdr; 1470 1471 /* Only poke fn 0 */ 1472 if (PCI_FUNC(pdev->devfn)) 1473 return; 1474 1475 pci_read_config_dword(pdev, 0x40, &conf1); 1476 pci_read_config_dword(pdev, 0x80, &conf5); 1477 1478 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */ 1479 conf5 &= ~(1 << 24); /* Clear bit 24 */ 1480 1481 switch (pdev->device) { 1482 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */ 1483 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */ 1484 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */ 1485 /* The controller should be in single function ahci mode */ 1486 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */ 1487 break; 1488 1489 case PCI_DEVICE_ID_JMICRON_JMB365: 1490 case PCI_DEVICE_ID_JMICRON_JMB366: 1491 /* Redirect IDE second PATA port to the right spot */ 1492 conf5 |= (1 << 24); 1493 /* Fall through */ 1494 case PCI_DEVICE_ID_JMICRON_JMB361: 1495 case PCI_DEVICE_ID_JMICRON_JMB363: 1496 case PCI_DEVICE_ID_JMICRON_JMB369: 1497 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */ 1498 /* Set the class codes correctly and then direct IDE 0 */ 1499 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */ 1500 break; 1501 1502 case PCI_DEVICE_ID_JMICRON_JMB368: 1503 /* The controller should be in single function IDE mode */ 1504 conf1 |= 0x00C00000; /* Set 22, 23 */ 1505 break; 1506 } 1507 1508 pci_write_config_dword(pdev, 0x40, conf1); 1509 pci_write_config_dword(pdev, 0x80, conf5); 1510 1511 /* Update pdev accordingly */ 1512 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr); 1513 pdev->hdr_type = hdr & 0x7f; 1514 pdev->multifunction = !!(hdr & 0x80); 1515 1516 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class); 1517 pdev->class = class >> 8; 1518 } 1519 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1520 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1521 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata); 1522 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1523 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata); 1524 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1525 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1526 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1527 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata); 1528 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1529 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1530 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata); 1531 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1532 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata); 1533 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1534 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1535 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1536 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata); 1537 1538 #endif 1539 1540 #ifdef CONFIG_X86_IO_APIC 1541 static void quirk_alder_ioapic(struct pci_dev *pdev) 1542 { 1543 int i; 1544 1545 if ((pdev->class >> 8) != 0xff00) 1546 return; 1547 1548 /* the first BAR is the location of the IO APIC...we must 1549 * not touch this (and it's already covered by the fixmap), so 1550 * forcibly insert it into the resource tree */ 1551 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0)) 1552 insert_resource(&iomem_resource, &pdev->resource[0]); 1553 1554 /* The next five BARs all seem to be rubbish, so just clean 1555 * them out */ 1556 for (i=1; i < 6; i++) { 1557 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i])); 1558 } 1559 1560 } 1561 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic); 1562 #endif 1563 1564 static void quirk_pcie_mch(struct pci_dev *pdev) 1565 { 1566 pci_msi_off(pdev); 1567 pdev->no_msi = 1; 1568 } 1569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch); 1570 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch); 1571 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch); 1572 1573 1574 /* 1575 * It's possible for the MSI to get corrupted if shpc and acpi 1576 * are used together on certain PXH-based systems. 1577 */ 1578 static void quirk_pcie_pxh(struct pci_dev *dev) 1579 { 1580 pci_msi_off(dev); 1581 dev->no_msi = 1; 1582 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n"); 1583 } 1584 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); 1585 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); 1586 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh); 1587 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh); 1588 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh); 1589 1590 /* 1591 * Some Intel PCI Express chipsets have trouble with downstream 1592 * device power management. 1593 */ 1594 static void quirk_intel_pcie_pm(struct pci_dev * dev) 1595 { 1596 pci_pm_d3_delay = 120; 1597 dev->no_d1d2 = 1; 1598 } 1599 1600 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm); 1601 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm); 1602 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm); 1603 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm); 1604 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm); 1605 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm); 1606 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm); 1607 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm); 1608 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm); 1609 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm); 1610 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm); 1611 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm); 1612 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm); 1613 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm); 1614 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm); 1615 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm); 1616 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm); 1617 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm); 1618 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm); 1619 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm); 1620 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm); 1621 1622 #ifdef CONFIG_X86_IO_APIC 1623 /* 1624 * Boot interrupts on some chipsets cannot be turned off. For these chipsets, 1625 * remap the original interrupt in the linux kernel to the boot interrupt, so 1626 * that a PCI device's interrupt handler is installed on the boot interrupt 1627 * line instead. 1628 */ 1629 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev) 1630 { 1631 if (noioapicquirk || noioapicreroute) 1632 return; 1633 1634 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT; 1635 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n", 1636 dev->vendor, dev->device); 1637 } 1638 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 1639 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 1640 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 1641 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 1642 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 1643 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 1644 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 1645 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 1646 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 1647 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 1648 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 1649 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 1650 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 1651 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 1652 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 1653 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 1654 1655 /* 1656 * On some chipsets we can disable the generation of legacy INTx boot 1657 * interrupts. 1658 */ 1659 1660 /* 1661 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no 1662 * 300641-004US, section 5.7.3. 1663 */ 1664 #define INTEL_6300_IOAPIC_ABAR 0x40 1665 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14) 1666 1667 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev) 1668 { 1669 u16 pci_config_word; 1670 1671 if (noioapicquirk) 1672 return; 1673 1674 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word); 1675 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ; 1676 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word); 1677 1678 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1679 dev->vendor, dev->device); 1680 } 1681 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); 1682 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); 1683 1684 /* 1685 * disable boot interrupts on HT-1000 1686 */ 1687 #define BC_HT1000_FEATURE_REG 0x64 1688 #define BC_HT1000_PIC_REGS_ENABLE (1<<0) 1689 #define BC_HT1000_MAP_IDX 0xC00 1690 #define BC_HT1000_MAP_DATA 0xC01 1691 1692 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev) 1693 { 1694 u32 pci_config_dword; 1695 u8 irq; 1696 1697 if (noioapicquirk) 1698 return; 1699 1700 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword); 1701 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword | 1702 BC_HT1000_PIC_REGS_ENABLE); 1703 1704 for (irq = 0x10; irq < 0x10 + 32; irq++) { 1705 outb(irq, BC_HT1000_MAP_IDX); 1706 outb(0x00, BC_HT1000_MAP_DATA); 1707 } 1708 1709 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword); 1710 1711 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1712 dev->vendor, dev->device); 1713 } 1714 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 1715 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 1716 1717 /* 1718 * disable boot interrupts on AMD and ATI chipsets 1719 */ 1720 /* 1721 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131 1722 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode 1723 * (due to an erratum). 1724 */ 1725 #define AMD_813X_MISC 0x40 1726 #define AMD_813X_NOIOAMODE (1<<0) 1727 #define AMD_813X_REV_B1 0x12 1728 #define AMD_813X_REV_B2 0x13 1729 1730 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev) 1731 { 1732 u32 pci_config_dword; 1733 1734 if (noioapicquirk) 1735 return; 1736 if ((dev->revision == AMD_813X_REV_B1) || 1737 (dev->revision == AMD_813X_REV_B2)) 1738 return; 1739 1740 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword); 1741 pci_config_dword &= ~AMD_813X_NOIOAMODE; 1742 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword); 1743 1744 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1745 dev->vendor, dev->device); 1746 } 1747 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1748 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1749 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1750 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 1751 1752 #define AMD_8111_PCI_IRQ_ROUTING 0x56 1753 1754 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev) 1755 { 1756 u16 pci_config_word; 1757 1758 if (noioapicquirk) 1759 return; 1760 1761 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word); 1762 if (!pci_config_word) { 1763 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] " 1764 "already disabled\n", dev->vendor, dev->device); 1765 return; 1766 } 1767 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0); 1768 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", 1769 dev->vendor, dev->device); 1770 } 1771 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 1772 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 1773 #endif /* CONFIG_X86_IO_APIC */ 1774 1775 /* 1776 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size 1777 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes. 1778 * Re-allocate the region if needed... 1779 */ 1780 static void quirk_tc86c001_ide(struct pci_dev *dev) 1781 { 1782 struct resource *r = &dev->resource[0]; 1783 1784 if (r->start & 0x8) { 1785 r->start = 0; 1786 r->end = 0xf; 1787 } 1788 } 1789 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2, 1790 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE, 1791 quirk_tc86c001_ide); 1792 1793 /* 1794 * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the 1795 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o) 1796 * being read correctly if bit 7 of the base address is set. 1797 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128). 1798 * Re-allocate the regions to a 256-byte boundary if necessary. 1799 */ 1800 static void quirk_plx_pci9050(struct pci_dev *dev) 1801 { 1802 unsigned int bar; 1803 1804 /* Fixed in revision 2 (PCI 9052). */ 1805 if (dev->revision >= 2) 1806 return; 1807 for (bar = 0; bar <= 1; bar++) 1808 if (pci_resource_len(dev, bar) == 0x80 && 1809 (pci_resource_start(dev, bar) & 0x80)) { 1810 struct resource *r = &dev->resource[bar]; 1811 dev_info(&dev->dev, 1812 "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n", 1813 bar); 1814 r->start = 0; 1815 r->end = 0xff; 1816 } 1817 } 1818 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, 1819 quirk_plx_pci9050); 1820 /* 1821 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others) 1822 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b, 1823 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c, 1824 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b. 1825 * 1826 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq" 1827 * driver. 1828 */ 1829 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050); 1830 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050); 1831 1832 static void quirk_netmos(struct pci_dev *dev) 1833 { 1834 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4; 1835 unsigned int num_serial = dev->subsystem_device & 0xf; 1836 1837 /* 1838 * These Netmos parts are multiport serial devices with optional 1839 * parallel ports. Even when parallel ports are present, they 1840 * are identified as class SERIAL, which means the serial driver 1841 * will claim them. To prevent this, mark them as class OTHER. 1842 * These combo devices should be claimed by parport_serial. 1843 * 1844 * The subdevice ID is of the form 0x00PS, where <P> is the number 1845 * of parallel ports and <S> is the number of serial ports. 1846 */ 1847 switch (dev->device) { 1848 case PCI_DEVICE_ID_NETMOS_9835: 1849 /* Well, this rule doesn't hold for the following 9835 device */ 1850 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM && 1851 dev->subsystem_device == 0x0299) 1852 return; 1853 case PCI_DEVICE_ID_NETMOS_9735: 1854 case PCI_DEVICE_ID_NETMOS_9745: 1855 case PCI_DEVICE_ID_NETMOS_9845: 1856 case PCI_DEVICE_ID_NETMOS_9855: 1857 if (num_parallel) { 1858 dev_info(&dev->dev, "Netmos %04x (%u parallel, " 1859 "%u serial); changing class SERIAL to OTHER " 1860 "(use parport_serial)\n", 1861 dev->device, num_parallel, num_serial); 1862 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) | 1863 (dev->class & 0xff); 1864 } 1865 } 1866 } 1867 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, 1868 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos); 1869 1870 static void quirk_e100_interrupt(struct pci_dev *dev) 1871 { 1872 u16 command, pmcsr; 1873 u8 __iomem *csr; 1874 u8 cmd_hi; 1875 int pm; 1876 1877 switch (dev->device) { 1878 /* PCI IDs taken from drivers/net/e100.c */ 1879 case 0x1029: 1880 case 0x1030 ... 0x1034: 1881 case 0x1038 ... 0x103E: 1882 case 0x1050 ... 0x1057: 1883 case 0x1059: 1884 case 0x1064 ... 0x106B: 1885 case 0x1091 ... 0x1095: 1886 case 0x1209: 1887 case 0x1229: 1888 case 0x2449: 1889 case 0x2459: 1890 case 0x245D: 1891 case 0x27DC: 1892 break; 1893 default: 1894 return; 1895 } 1896 1897 /* 1898 * Some firmware hands off the e100 with interrupts enabled, 1899 * which can cause a flood of interrupts if packets are 1900 * received before the driver attaches to the device. So 1901 * disable all e100 interrupts here. The driver will 1902 * re-enable them when it's ready. 1903 */ 1904 pci_read_config_word(dev, PCI_COMMAND, &command); 1905 1906 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0)) 1907 return; 1908 1909 /* 1910 * Check that the device is in the D0 power state. If it's not, 1911 * there is no point to look any further. 1912 */ 1913 pm = pci_find_capability(dev, PCI_CAP_ID_PM); 1914 if (pm) { 1915 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr); 1916 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) 1917 return; 1918 } 1919 1920 /* Convert from PCI bus to resource space. */ 1921 csr = ioremap(pci_resource_start(dev, 0), 8); 1922 if (!csr) { 1923 dev_warn(&dev->dev, "Can't map e100 registers\n"); 1924 return; 1925 } 1926 1927 cmd_hi = readb(csr + 3); 1928 if (cmd_hi == 0) { 1929 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; " 1930 "disabling\n"); 1931 writeb(1, csr + 3); 1932 } 1933 1934 iounmap(csr); 1935 } 1936 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, 1937 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt); 1938 1939 /* 1940 * The 82575 and 82598 may experience data corruption issues when transitioning 1941 * out of L0S. To prevent this we need to disable L0S on the pci-e link 1942 */ 1943 static void quirk_disable_aspm_l0s(struct pci_dev *dev) 1944 { 1945 dev_info(&dev->dev, "Disabling L0s\n"); 1946 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S); 1947 } 1948 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s); 1949 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s); 1950 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s); 1951 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s); 1952 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s); 1953 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s); 1954 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s); 1955 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s); 1956 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s); 1957 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s); 1958 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s); 1959 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s); 1960 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s); 1961 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s); 1962 1963 static void fixup_rev1_53c810(struct pci_dev *dev) 1964 { 1965 /* rev 1 ncr53c810 chips don't set the class at all which means 1966 * they don't get their resources remapped. Fix that here. 1967 */ 1968 1969 if (dev->class == PCI_CLASS_NOT_DEFINED) { 1970 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n"); 1971 dev->class = PCI_CLASS_STORAGE_SCSI; 1972 } 1973 } 1974 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); 1975 1976 /* Enable 1k I/O space granularity on the Intel P64H2 */ 1977 static void quirk_p64h2_1k_io(struct pci_dev *dev) 1978 { 1979 u16 en1k; 1980 1981 pci_read_config_word(dev, 0x40, &en1k); 1982 1983 if (en1k & 0x200) { 1984 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n"); 1985 dev->io_window_1k = 1; 1986 } 1987 } 1988 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io); 1989 1990 /* Under some circumstances, AER is not linked with extended capabilities. 1991 * Force it to be linked by setting the corresponding control bit in the 1992 * config space. 1993 */ 1994 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev) 1995 { 1996 uint8_t b; 1997 if (pci_read_config_byte(dev, 0xf41, &b) == 0) { 1998 if (!(b & 0x20)) { 1999 pci_write_config_byte(dev, 0xf41, b | 0x20); 2000 dev_info(&dev->dev, 2001 "Linking AER extended capability\n"); 2002 } 2003 } 2004 } 2005 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2006 quirk_nvidia_ck804_pcie_aer_ext_cap); 2007 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2008 quirk_nvidia_ck804_pcie_aer_ext_cap); 2009 2010 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev) 2011 { 2012 /* 2013 * Disable PCI Bus Parking and PCI Master read caching on CX700 2014 * which causes unspecified timing errors with a VT6212L on the PCI 2015 * bus leading to USB2.0 packet loss. 2016 * 2017 * This quirk is only enabled if a second (on the external PCI bus) 2018 * VT6212L is found -- the CX700 core itself also contains a USB 2019 * host controller with the same PCI ID as the VT6212L. 2020 */ 2021 2022 /* Count VT6212L instances */ 2023 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA, 2024 PCI_DEVICE_ID_VIA_8235_USB_2, NULL); 2025 uint8_t b; 2026 2027 /* p should contain the first (internal) VT6212L -- see if we have 2028 an external one by searching again */ 2029 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p); 2030 if (!p) 2031 return; 2032 pci_dev_put(p); 2033 2034 if (pci_read_config_byte(dev, 0x76, &b) == 0) { 2035 if (b & 0x40) { 2036 /* Turn off PCI Bus Parking */ 2037 pci_write_config_byte(dev, 0x76, b ^ 0x40); 2038 2039 dev_info(&dev->dev, 2040 "Disabling VIA CX700 PCI parking\n"); 2041 } 2042 } 2043 2044 if (pci_read_config_byte(dev, 0x72, &b) == 0) { 2045 if (b != 0) { 2046 /* Turn off PCI Master read caching */ 2047 pci_write_config_byte(dev, 0x72, 0x0); 2048 2049 /* Set PCI Master Bus time-out to "1x16 PCLK" */ 2050 pci_write_config_byte(dev, 0x75, 0x1); 2051 2052 /* Disable "Read FIFO Timer" */ 2053 pci_write_config_byte(dev, 0x77, 0x0); 2054 2055 dev_info(&dev->dev, 2056 "Disabling VIA CX700 PCI caching\n"); 2057 } 2058 } 2059 } 2060 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching); 2061 2062 /* 2063 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the 2064 * VPD end tag will hang the device. This problem was initially 2065 * observed when a vpd entry was created in sysfs 2066 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry 2067 * will dump 32k of data. Reading a full 32k will cause an access 2068 * beyond the VPD end tag causing the device to hang. Once the device 2069 * is hung, the bnx2 driver will not be able to reset the device. 2070 * We believe that it is legal to read beyond the end tag and 2071 * therefore the solution is to limit the read/write length. 2072 */ 2073 static void quirk_brcm_570x_limit_vpd(struct pci_dev *dev) 2074 { 2075 /* 2076 * Only disable the VPD capability for 5706, 5706S, 5708, 2077 * 5708S and 5709 rev. A 2078 */ 2079 if ((dev->device == PCI_DEVICE_ID_NX2_5706) || 2080 (dev->device == PCI_DEVICE_ID_NX2_5706S) || 2081 (dev->device == PCI_DEVICE_ID_NX2_5708) || 2082 (dev->device == PCI_DEVICE_ID_NX2_5708S) || 2083 ((dev->device == PCI_DEVICE_ID_NX2_5709) && 2084 (dev->revision & 0xf0) == 0x0)) { 2085 if (dev->vpd) 2086 dev->vpd->len = 0x80; 2087 } 2088 } 2089 2090 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2091 PCI_DEVICE_ID_NX2_5706, 2092 quirk_brcm_570x_limit_vpd); 2093 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2094 PCI_DEVICE_ID_NX2_5706S, 2095 quirk_brcm_570x_limit_vpd); 2096 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2097 PCI_DEVICE_ID_NX2_5708, 2098 quirk_brcm_570x_limit_vpd); 2099 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2100 PCI_DEVICE_ID_NX2_5708S, 2101 quirk_brcm_570x_limit_vpd); 2102 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2103 PCI_DEVICE_ID_NX2_5709, 2104 quirk_brcm_570x_limit_vpd); 2105 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2106 PCI_DEVICE_ID_NX2_5709S, 2107 quirk_brcm_570x_limit_vpd); 2108 2109 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev) 2110 { 2111 u32 rev; 2112 2113 pci_read_config_dword(dev, 0xf4, &rev); 2114 2115 /* Only CAP the MRRS if the device is a 5719 A0 */ 2116 if (rev == 0x05719000) { 2117 int readrq = pcie_get_readrq(dev); 2118 if (readrq > 2048) 2119 pcie_set_readrq(dev, 2048); 2120 } 2121 } 2122 2123 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM, 2124 PCI_DEVICE_ID_TIGON3_5719, 2125 quirk_brcm_5719_limit_mrrs); 2126 2127 /* Originally in EDAC sources for i82875P: 2128 * Intel tells BIOS developers to hide device 6 which 2129 * configures the overflow device access containing 2130 * the DRBs - this is where we expose device 6. 2131 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm 2132 */ 2133 static void quirk_unhide_mch_dev6(struct pci_dev *dev) 2134 { 2135 u8 reg; 2136 2137 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) { 2138 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n"); 2139 pci_write_config_byte(dev, 0xF4, reg | 0x02); 2140 } 2141 } 2142 2143 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, 2144 quirk_unhide_mch_dev6); 2145 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, 2146 quirk_unhide_mch_dev6); 2147 2148 #ifdef CONFIG_TILEPRO 2149 /* 2150 * The Tilera TILEmpower tilepro platform needs to set the link speed 2151 * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed 2152 * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe 2153 * capability register of the PEX8624 PCIe switch. The switch 2154 * supports link speed auto negotiation, but falsely sets 2155 * the link speed to 5GT/s. 2156 */ 2157 static void quirk_tile_plx_gen1(struct pci_dev *dev) 2158 { 2159 if (tile_plx_gen1) { 2160 pci_write_config_dword(dev, 0x98, 0x1); 2161 mdelay(50); 2162 } 2163 } 2164 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1); 2165 #endif /* CONFIG_TILEPRO */ 2166 2167 #ifdef CONFIG_PCI_MSI 2168 /* Some chipsets do not support MSI. We cannot easily rely on setting 2169 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually 2170 * some other busses controlled by the chipset even if Linux is not 2171 * aware of it. Instead of setting the flag on all busses in the 2172 * machine, simply disable MSI globally. 2173 */ 2174 static void quirk_disable_all_msi(struct pci_dev *dev) 2175 { 2176 pci_no_msi(); 2177 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n"); 2178 } 2179 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi); 2180 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi); 2181 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi); 2182 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi); 2183 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi); 2184 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); 2185 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi); 2186 2187 /* Disable MSI on chipsets that are known to not support it */ 2188 static void quirk_disable_msi(struct pci_dev *dev) 2189 { 2190 if (dev->subordinate) { 2191 dev_warn(&dev->dev, "MSI quirk detected; " 2192 "subordinate MSI disabled\n"); 2193 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2194 } 2195 } 2196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); 2197 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi); 2198 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi); 2199 2200 /* 2201 * The APC bridge device in AMD 780 family northbridges has some random 2202 * OEM subsystem ID in its vendor ID register (erratum 18), so instead 2203 * we use the possible vendor/device IDs of the host bridge for the 2204 * declared quirk, and search for the APC bridge by slot number. 2205 */ 2206 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge) 2207 { 2208 struct pci_dev *apc_bridge; 2209 2210 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0)); 2211 if (apc_bridge) { 2212 if (apc_bridge->device == 0x9602) 2213 quirk_disable_msi(apc_bridge); 2214 pci_dev_put(apc_bridge); 2215 } 2216 } 2217 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi); 2218 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi); 2219 2220 /* Go through the list of Hypertransport capabilities and 2221 * return 1 if a HT MSI capability is found and enabled */ 2222 static int msi_ht_cap_enabled(struct pci_dev *dev) 2223 { 2224 int pos, ttl = 48; 2225 2226 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2227 while (pos && ttl--) { 2228 u8 flags; 2229 2230 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2231 &flags) == 0) 2232 { 2233 dev_info(&dev->dev, "Found %s HT MSI Mapping\n", 2234 flags & HT_MSI_FLAGS_ENABLE ? 2235 "enabled" : "disabled"); 2236 return (flags & HT_MSI_FLAGS_ENABLE) != 0; 2237 } 2238 2239 pos = pci_find_next_ht_capability(dev, pos, 2240 HT_CAPTYPE_MSI_MAPPING); 2241 } 2242 return 0; 2243 } 2244 2245 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */ 2246 static void quirk_msi_ht_cap(struct pci_dev *dev) 2247 { 2248 if (dev->subordinate && !msi_ht_cap_enabled(dev)) { 2249 dev_warn(&dev->dev, "MSI quirk detected; " 2250 "subordinate MSI disabled\n"); 2251 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2252 } 2253 } 2254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE, 2255 quirk_msi_ht_cap); 2256 2257 /* The nVidia CK804 chipset may have 2 HT MSI mappings. 2258 * MSI are supported if the MSI capability set in any of these mappings. 2259 */ 2260 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev) 2261 { 2262 struct pci_dev *pdev; 2263 2264 if (!dev->subordinate) 2265 return; 2266 2267 /* check HT MSI cap on this chipset and the root one. 2268 * a single one having MSI is enough to be sure that MSI are supported. 2269 */ 2270 pdev = pci_get_slot(dev->bus, 0); 2271 if (!pdev) 2272 return; 2273 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) { 2274 dev_warn(&dev->dev, "MSI quirk detected; " 2275 "subordinate MSI disabled\n"); 2276 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2277 } 2278 pci_dev_put(pdev); 2279 } 2280 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2281 quirk_nvidia_ck804_msi_ht_cap); 2282 2283 /* Force enable MSI mapping capability on HT bridges */ 2284 static void ht_enable_msi_mapping(struct pci_dev *dev) 2285 { 2286 int pos, ttl = 48; 2287 2288 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2289 while (pos && ttl--) { 2290 u8 flags; 2291 2292 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2293 &flags) == 0) { 2294 dev_info(&dev->dev, "Enabling HT MSI Mapping\n"); 2295 2296 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2297 flags | HT_MSI_FLAGS_ENABLE); 2298 } 2299 pos = pci_find_next_ht_capability(dev, pos, 2300 HT_CAPTYPE_MSI_MAPPING); 2301 } 2302 } 2303 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, 2304 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB, 2305 ht_enable_msi_mapping); 2306 2307 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, 2308 ht_enable_msi_mapping); 2309 2310 /* The P5N32-SLI motherboards from Asus have a problem with msi 2311 * for the MCP55 NIC. It is not yet determined whether the msi problem 2312 * also affects other devices. As for now, turn off msi for this device. 2313 */ 2314 static void nvenet_msi_disable(struct pci_dev *dev) 2315 { 2316 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME); 2317 2318 if (board_name && 2319 (strstr(board_name, "P5N32-SLI PREMIUM") || 2320 strstr(board_name, "P5N32-E SLI"))) { 2321 dev_info(&dev->dev, 2322 "Disabling msi for MCP55 NIC on P5N32-SLI\n"); 2323 dev->no_msi = 1; 2324 } 2325 } 2326 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2327 PCI_DEVICE_ID_NVIDIA_NVENET_15, 2328 nvenet_msi_disable); 2329 2330 /* 2331 * Some versions of the MCP55 bridge from nvidia have a legacy irq routing 2332 * config register. This register controls the routing of legacy interrupts 2333 * from devices that route through the MCP55. If this register is misprogramed 2334 * interrupts are only sent to the bsp, unlike conventional systems where the 2335 * irq is broadxast to all online cpus. Not having this register set 2336 * properly prevents kdump from booting up properly, so lets make sure that 2337 * we have it set correctly. 2338 * Note this is an undocumented register. 2339 */ 2340 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev) 2341 { 2342 u32 cfg; 2343 2344 if (!pci_find_capability(dev, PCI_CAP_ID_HT)) 2345 return; 2346 2347 pci_read_config_dword(dev, 0x74, &cfg); 2348 2349 if (cfg & ((1 << 2) | (1 << 15))) { 2350 printk(KERN_INFO "Rewriting irq routing register on MCP55\n"); 2351 cfg &= ~((1 << 2) | (1 << 15)); 2352 pci_write_config_dword(dev, 0x74, cfg); 2353 } 2354 } 2355 2356 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2357 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0, 2358 nvbridge_check_legacy_irq_routing); 2359 2360 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2361 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4, 2362 nvbridge_check_legacy_irq_routing); 2363 2364 static int ht_check_msi_mapping(struct pci_dev *dev) 2365 { 2366 int pos, ttl = 48; 2367 int found = 0; 2368 2369 /* check if there is HT MSI cap or enabled on this device */ 2370 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2371 while (pos && ttl--) { 2372 u8 flags; 2373 2374 if (found < 1) 2375 found = 1; 2376 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2377 &flags) == 0) { 2378 if (flags & HT_MSI_FLAGS_ENABLE) { 2379 if (found < 2) { 2380 found = 2; 2381 break; 2382 } 2383 } 2384 } 2385 pos = pci_find_next_ht_capability(dev, pos, 2386 HT_CAPTYPE_MSI_MAPPING); 2387 } 2388 2389 return found; 2390 } 2391 2392 static int host_bridge_with_leaf(struct pci_dev *host_bridge) 2393 { 2394 struct pci_dev *dev; 2395 int pos; 2396 int i, dev_no; 2397 int found = 0; 2398 2399 dev_no = host_bridge->devfn >> 3; 2400 for (i = dev_no + 1; i < 0x20; i++) { 2401 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0)); 2402 if (!dev) 2403 continue; 2404 2405 /* found next host bridge ?*/ 2406 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2407 if (pos != 0) { 2408 pci_dev_put(dev); 2409 break; 2410 } 2411 2412 if (ht_check_msi_mapping(dev)) { 2413 found = 1; 2414 pci_dev_put(dev); 2415 break; 2416 } 2417 pci_dev_put(dev); 2418 } 2419 2420 return found; 2421 } 2422 2423 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */ 2424 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */ 2425 2426 static int is_end_of_ht_chain(struct pci_dev *dev) 2427 { 2428 int pos, ctrl_off; 2429 int end = 0; 2430 u16 flags, ctrl; 2431 2432 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2433 2434 if (!pos) 2435 goto out; 2436 2437 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags); 2438 2439 ctrl_off = ((flags >> 10) & 1) ? 2440 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1; 2441 pci_read_config_word(dev, pos + ctrl_off, &ctrl); 2442 2443 if (ctrl & (1 << 6)) 2444 end = 1; 2445 2446 out: 2447 return end; 2448 } 2449 2450 static void nv_ht_enable_msi_mapping(struct pci_dev *dev) 2451 { 2452 struct pci_dev *host_bridge; 2453 int pos; 2454 int i, dev_no; 2455 int found = 0; 2456 2457 dev_no = dev->devfn >> 3; 2458 for (i = dev_no; i >= 0; i--) { 2459 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0)); 2460 if (!host_bridge) 2461 continue; 2462 2463 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2464 if (pos != 0) { 2465 found = 1; 2466 break; 2467 } 2468 pci_dev_put(host_bridge); 2469 } 2470 2471 if (!found) 2472 return; 2473 2474 /* don't enable end_device/host_bridge with leaf directly here */ 2475 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) && 2476 host_bridge_with_leaf(host_bridge)) 2477 goto out; 2478 2479 /* root did that ! */ 2480 if (msi_ht_cap_enabled(host_bridge)) 2481 goto out; 2482 2483 ht_enable_msi_mapping(dev); 2484 2485 out: 2486 pci_dev_put(host_bridge); 2487 } 2488 2489 static void ht_disable_msi_mapping(struct pci_dev *dev) 2490 { 2491 int pos, ttl = 48; 2492 2493 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2494 while (pos && ttl--) { 2495 u8 flags; 2496 2497 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2498 &flags) == 0) { 2499 dev_info(&dev->dev, "Disabling HT MSI Mapping\n"); 2500 2501 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2502 flags & ~HT_MSI_FLAGS_ENABLE); 2503 } 2504 pos = pci_find_next_ht_capability(dev, pos, 2505 HT_CAPTYPE_MSI_MAPPING); 2506 } 2507 } 2508 2509 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all) 2510 { 2511 struct pci_dev *host_bridge; 2512 int pos; 2513 int found; 2514 2515 if (!pci_msi_enabled()) 2516 return; 2517 2518 /* check if there is HT MSI cap or enabled on this device */ 2519 found = ht_check_msi_mapping(dev); 2520 2521 /* no HT MSI CAP */ 2522 if (found == 0) 2523 return; 2524 2525 /* 2526 * HT MSI mapping should be disabled on devices that are below 2527 * a non-Hypertransport host bridge. Locate the host bridge... 2528 */ 2529 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); 2530 if (host_bridge == NULL) { 2531 dev_warn(&dev->dev, 2532 "nv_msi_ht_cap_quirk didn't locate host bridge\n"); 2533 return; 2534 } 2535 2536 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2537 if (pos != 0) { 2538 /* Host bridge is to HT */ 2539 if (found == 1) { 2540 /* it is not enabled, try to enable it */ 2541 if (all) 2542 ht_enable_msi_mapping(dev); 2543 else 2544 nv_ht_enable_msi_mapping(dev); 2545 } 2546 goto out; 2547 } 2548 2549 /* HT MSI is not enabled */ 2550 if (found == 1) 2551 goto out; 2552 2553 /* Host bridge is not to HT, disable HT MSI mapping on this device */ 2554 ht_disable_msi_mapping(dev); 2555 2556 out: 2557 pci_dev_put(host_bridge); 2558 } 2559 2560 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev) 2561 { 2562 return __nv_msi_ht_cap_quirk(dev, 1); 2563 } 2564 2565 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev) 2566 { 2567 return __nv_msi_ht_cap_quirk(dev, 0); 2568 } 2569 2570 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 2571 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 2572 2573 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 2574 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 2575 2576 static void quirk_msi_intx_disable_bug(struct pci_dev *dev) 2577 { 2578 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 2579 } 2580 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev) 2581 { 2582 struct pci_dev *p; 2583 2584 /* SB700 MSI issue will be fixed at HW level from revision A21, 2585 * we need check PCI REVISION ID of SMBus controller to get SB700 2586 * revision. 2587 */ 2588 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS, 2589 NULL); 2590 if (!p) 2591 return; 2592 2593 if ((p->revision < 0x3B) && (p->revision >= 0x30)) 2594 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 2595 pci_dev_put(p); 2596 } 2597 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2598 PCI_DEVICE_ID_TIGON3_5780, 2599 quirk_msi_intx_disable_bug); 2600 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2601 PCI_DEVICE_ID_TIGON3_5780S, 2602 quirk_msi_intx_disable_bug); 2603 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2604 PCI_DEVICE_ID_TIGON3_5714, 2605 quirk_msi_intx_disable_bug); 2606 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2607 PCI_DEVICE_ID_TIGON3_5714S, 2608 quirk_msi_intx_disable_bug); 2609 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2610 PCI_DEVICE_ID_TIGON3_5715, 2611 quirk_msi_intx_disable_bug); 2612 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 2613 PCI_DEVICE_ID_TIGON3_5715S, 2614 quirk_msi_intx_disable_bug); 2615 2616 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390, 2617 quirk_msi_intx_disable_ati_bug); 2618 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391, 2619 quirk_msi_intx_disable_ati_bug); 2620 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392, 2621 quirk_msi_intx_disable_ati_bug); 2622 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393, 2623 quirk_msi_intx_disable_ati_bug); 2624 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394, 2625 quirk_msi_intx_disable_ati_bug); 2626 2627 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373, 2628 quirk_msi_intx_disable_bug); 2629 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374, 2630 quirk_msi_intx_disable_bug); 2631 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375, 2632 quirk_msi_intx_disable_bug); 2633 2634 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062, 2635 quirk_msi_intx_disable_bug); 2636 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063, 2637 quirk_msi_intx_disable_bug); 2638 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060, 2639 quirk_msi_intx_disable_bug); 2640 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062, 2641 quirk_msi_intx_disable_bug); 2642 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073, 2643 quirk_msi_intx_disable_bug); 2644 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083, 2645 quirk_msi_intx_disable_bug); 2646 #endif /* CONFIG_PCI_MSI */ 2647 2648 /* Allow manual resource allocation for PCI hotplug bridges 2649 * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For 2650 * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6), 2651 * kernel fails to allocate resources when hotplug device is 2652 * inserted and PCI bus is rescanned. 2653 */ 2654 static void quirk_hotplug_bridge(struct pci_dev *dev) 2655 { 2656 dev->is_hotplug_bridge = 1; 2657 } 2658 2659 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge); 2660 2661 /* 2662 * This is a quirk for the Ricoh MMC controller found as a part of 2663 * some mulifunction chips. 2664 2665 * This is very similar and based on the ricoh_mmc driver written by 2666 * Philip Langdale. Thank you for these magic sequences. 2667 * 2668 * These chips implement the four main memory card controllers (SD, MMC, MS, xD) 2669 * and one or both of cardbus or firewire. 2670 * 2671 * It happens that they implement SD and MMC 2672 * support as separate controllers (and PCI functions). The linux SDHCI 2673 * driver supports MMC cards but the chip detects MMC cards in hardware 2674 * and directs them to the MMC controller - so the SDHCI driver never sees 2675 * them. 2676 * 2677 * To get around this, we must disable the useless MMC controller. 2678 * At that point, the SDHCI controller will start seeing them 2679 * It seems to be the case that the relevant PCI registers to deactivate the 2680 * MMC controller live on PCI function 0, which might be the cardbus controller 2681 * or the firewire controller, depending on the particular chip in question 2682 * 2683 * This has to be done early, because as soon as we disable the MMC controller 2684 * other pci functions shift up one level, e.g. function #2 becomes function 2685 * #1, and this will confuse the pci core. 2686 */ 2687 2688 #ifdef CONFIG_MMC_RICOH_MMC 2689 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev) 2690 { 2691 /* disable via cardbus interface */ 2692 u8 write_enable; 2693 u8 write_target; 2694 u8 disable; 2695 2696 /* disable must be done via function #0 */ 2697 if (PCI_FUNC(dev->devfn)) 2698 return; 2699 2700 pci_read_config_byte(dev, 0xB7, &disable); 2701 if (disable & 0x02) 2702 return; 2703 2704 pci_read_config_byte(dev, 0x8E, &write_enable); 2705 pci_write_config_byte(dev, 0x8E, 0xAA); 2706 pci_read_config_byte(dev, 0x8D, &write_target); 2707 pci_write_config_byte(dev, 0x8D, 0xB7); 2708 pci_write_config_byte(dev, 0xB7, disable | 0x02); 2709 pci_write_config_byte(dev, 0x8E, write_enable); 2710 pci_write_config_byte(dev, 0x8D, write_target); 2711 2712 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n"); 2713 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n"); 2714 } 2715 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); 2716 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); 2717 2718 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev) 2719 { 2720 /* disable via firewire interface */ 2721 u8 write_enable; 2722 u8 disable; 2723 2724 /* disable must be done via function #0 */ 2725 if (PCI_FUNC(dev->devfn)) 2726 return; 2727 /* 2728 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize 2729 * certain types of SD/MMC cards. Lowering the SD base 2730 * clock frequency from 200Mhz to 50Mhz fixes this issue. 2731 * 2732 * 0x150 - SD2.0 mode enable for changing base clock 2733 * frequency to 50Mhz 2734 * 0xe1 - Base clock frequency 2735 * 0x32 - 50Mhz new clock frequency 2736 * 0xf9 - Key register for 0x150 2737 * 0xfc - key register for 0xe1 2738 */ 2739 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 || 2740 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) { 2741 pci_write_config_byte(dev, 0xf9, 0xfc); 2742 pci_write_config_byte(dev, 0x150, 0x10); 2743 pci_write_config_byte(dev, 0xf9, 0x00); 2744 pci_write_config_byte(dev, 0xfc, 0x01); 2745 pci_write_config_byte(dev, 0xe1, 0x32); 2746 pci_write_config_byte(dev, 0xfc, 0x00); 2747 2748 dev_notice(&dev->dev, "MMC controller base frequency changed to 50Mhz.\n"); 2749 } 2750 2751 pci_read_config_byte(dev, 0xCB, &disable); 2752 2753 if (disable & 0x02) 2754 return; 2755 2756 pci_read_config_byte(dev, 0xCA, &write_enable); 2757 pci_write_config_byte(dev, 0xCA, 0x57); 2758 pci_write_config_byte(dev, 0xCB, disable | 0x02); 2759 pci_write_config_byte(dev, 0xCA, write_enable); 2760 2761 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n"); 2762 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n"); 2763 2764 } 2765 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); 2766 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); 2767 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832); 2768 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832); 2769 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832); 2770 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832); 2771 #endif /*CONFIG_MMC_RICOH_MMC*/ 2772 2773 #ifdef CONFIG_DMAR_TABLE 2774 #define VTUNCERRMSK_REG 0x1ac 2775 #define VTD_MSK_SPEC_ERRORS (1 << 31) 2776 /* 2777 * This is a quirk for masking vt-d spec defined errors to platform error 2778 * handling logic. With out this, platforms using Intel 7500, 5500 chipsets 2779 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based 2780 * on the RAS config settings of the platform) when a vt-d fault happens. 2781 * The resulting SMI caused the system to hang. 2782 * 2783 * VT-d spec related errors are already handled by the VT-d OS code, so no 2784 * need to report the same error through other channels. 2785 */ 2786 static void vtd_mask_spec_errors(struct pci_dev *dev) 2787 { 2788 u32 word; 2789 2790 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word); 2791 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS); 2792 } 2793 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors); 2794 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors); 2795 #endif 2796 2797 static void fixup_ti816x_class(struct pci_dev *dev) 2798 { 2799 /* TI 816x devices do not have class code set when in PCIe boot mode */ 2800 dev_info(&dev->dev, "Setting PCI class for 816x PCIe device\n"); 2801 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO; 2802 } 2803 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800, 2804 PCI_CLASS_NOT_DEFINED, 0, fixup_ti816x_class); 2805 2806 /* Some PCIe devices do not work reliably with the claimed maximum 2807 * payload size supported. 2808 */ 2809 static void fixup_mpss_256(struct pci_dev *dev) 2810 { 2811 dev->pcie_mpss = 1; /* 256 bytes */ 2812 } 2813 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE, 2814 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256); 2815 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE, 2816 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256); 2817 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE, 2818 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256); 2819 2820 /* Intel 5000 and 5100 Memory controllers have an errata with read completion 2821 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B. 2822 * Since there is no way of knowing what the PCIE MPS on each fabric will be 2823 * until all of the devices are discovered and buses walked, read completion 2824 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because 2825 * it is possible to hotplug a device with MPS of 256B. 2826 */ 2827 static void quirk_intel_mc_errata(struct pci_dev *dev) 2828 { 2829 int err; 2830 u16 rcc; 2831 2832 if (pcie_bus_config == PCIE_BUS_TUNE_OFF) 2833 return; 2834 2835 /* Intel errata specifies bits to change but does not say what they are. 2836 * Keeping them magical until such time as the registers and values can 2837 * be explained. 2838 */ 2839 err = pci_read_config_word(dev, 0x48, &rcc); 2840 if (err) { 2841 dev_err(&dev->dev, "Error attempting to read the read " 2842 "completion coalescing register.\n"); 2843 return; 2844 } 2845 2846 if (!(rcc & (1 << 10))) 2847 return; 2848 2849 rcc &= ~(1 << 10); 2850 2851 err = pci_write_config_word(dev, 0x48, rcc); 2852 if (err) { 2853 dev_err(&dev->dev, "Error attempting to write the read " 2854 "completion coalescing register.\n"); 2855 return; 2856 } 2857 2858 pr_info_once("Read completion coalescing disabled due to hardware " 2859 "errata relating to 256B MPS.\n"); 2860 } 2861 /* Intel 5000 series memory controllers and ports 2-7 */ 2862 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata); 2863 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata); 2864 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata); 2865 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata); 2866 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata); 2867 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata); 2868 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata); 2869 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata); 2870 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata); 2871 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata); 2872 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata); 2873 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata); 2874 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata); 2875 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata); 2876 /* Intel 5100 series memory controllers and ports 2-7 */ 2877 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata); 2878 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata); 2879 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata); 2880 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata); 2881 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata); 2882 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata); 2883 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata); 2884 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata); 2885 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata); 2886 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata); 2887 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata); 2888 2889 2890 static ktime_t fixup_debug_start(struct pci_dev *dev, 2891 void (*fn)(struct pci_dev *dev)) 2892 { 2893 ktime_t calltime = ktime_set(0, 0); 2894 2895 dev_dbg(&dev->dev, "calling %pF\n", fn); 2896 if (initcall_debug) { 2897 pr_debug("calling %pF @ %i for %s\n", 2898 fn, task_pid_nr(current), dev_name(&dev->dev)); 2899 calltime = ktime_get(); 2900 } 2901 2902 return calltime; 2903 } 2904 2905 static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime, 2906 void (*fn)(struct pci_dev *dev)) 2907 { 2908 ktime_t delta, rettime; 2909 unsigned long long duration; 2910 2911 if (initcall_debug) { 2912 rettime = ktime_get(); 2913 delta = ktime_sub(rettime, calltime); 2914 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2915 pr_debug("pci fixup %pF returned after %lld usecs for %s\n", 2916 fn, duration, dev_name(&dev->dev)); 2917 } 2918 } 2919 2920 /* 2921 * Some BIOS implementations leave the Intel GPU interrupts enabled, 2922 * even though no one is handling them (f.e. i915 driver is never loaded). 2923 * Additionally the interrupt destination is not set up properly 2924 * and the interrupt ends up -somewhere-. 2925 * 2926 * These spurious interrupts are "sticky" and the kernel disables 2927 * the (shared) interrupt line after 100.000+ generated interrupts. 2928 * 2929 * Fix it by disabling the still enabled interrupts. 2930 * This resolves crashes often seen on monitor unplug. 2931 */ 2932 #define I915_DEIER_REG 0x4400c 2933 static void disable_igfx_irq(struct pci_dev *dev) 2934 { 2935 void __iomem *regs = pci_iomap(dev, 0, 0); 2936 if (regs == NULL) { 2937 dev_warn(&dev->dev, "igfx quirk: Can't iomap PCI device\n"); 2938 return; 2939 } 2940 2941 /* Check if any interrupt line is still enabled */ 2942 if (readl(regs + I915_DEIER_REG) != 0) { 2943 dev_warn(&dev->dev, "BIOS left Intel GPU interrupts enabled; " 2944 "disabling\n"); 2945 2946 writel(0, regs + I915_DEIER_REG); 2947 } 2948 2949 pci_iounmap(dev, regs); 2950 } 2951 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq); 2952 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq); 2953 2954 /* 2955 * Some devices may pass our check in pci_intx_mask_supported if 2956 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly 2957 * support this feature. 2958 */ 2959 static void quirk_broken_intx_masking(struct pci_dev *dev) 2960 { 2961 dev->broken_intx_masking = 1; 2962 } 2963 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, 0x0030, 2964 quirk_broken_intx_masking); 2965 DECLARE_PCI_FIXUP_HEADER(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */ 2966 quirk_broken_intx_masking); 2967 2968 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, 2969 struct pci_fixup *end) 2970 { 2971 ktime_t calltime; 2972 2973 for (; f < end; f++) 2974 if ((f->class == (u32) (dev->class >> f->class_shift) || 2975 f->class == (u32) PCI_ANY_ID) && 2976 (f->vendor == dev->vendor || 2977 f->vendor == (u16) PCI_ANY_ID) && 2978 (f->device == dev->device || 2979 f->device == (u16) PCI_ANY_ID)) { 2980 calltime = fixup_debug_start(dev, f->hook); 2981 f->hook(dev); 2982 fixup_debug_report(dev, calltime, f->hook); 2983 } 2984 } 2985 2986 extern struct pci_fixup __start_pci_fixups_early[]; 2987 extern struct pci_fixup __end_pci_fixups_early[]; 2988 extern struct pci_fixup __start_pci_fixups_header[]; 2989 extern struct pci_fixup __end_pci_fixups_header[]; 2990 extern struct pci_fixup __start_pci_fixups_final[]; 2991 extern struct pci_fixup __end_pci_fixups_final[]; 2992 extern struct pci_fixup __start_pci_fixups_enable[]; 2993 extern struct pci_fixup __end_pci_fixups_enable[]; 2994 extern struct pci_fixup __start_pci_fixups_resume[]; 2995 extern struct pci_fixup __end_pci_fixups_resume[]; 2996 extern struct pci_fixup __start_pci_fixups_resume_early[]; 2997 extern struct pci_fixup __end_pci_fixups_resume_early[]; 2998 extern struct pci_fixup __start_pci_fixups_suspend[]; 2999 extern struct pci_fixup __end_pci_fixups_suspend[]; 3000 3001 static bool pci_apply_fixup_final_quirks; 3002 3003 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) 3004 { 3005 struct pci_fixup *start, *end; 3006 3007 switch(pass) { 3008 case pci_fixup_early: 3009 start = __start_pci_fixups_early; 3010 end = __end_pci_fixups_early; 3011 break; 3012 3013 case pci_fixup_header: 3014 start = __start_pci_fixups_header; 3015 end = __end_pci_fixups_header; 3016 break; 3017 3018 case pci_fixup_final: 3019 if (!pci_apply_fixup_final_quirks) 3020 return; 3021 start = __start_pci_fixups_final; 3022 end = __end_pci_fixups_final; 3023 break; 3024 3025 case pci_fixup_enable: 3026 start = __start_pci_fixups_enable; 3027 end = __end_pci_fixups_enable; 3028 break; 3029 3030 case pci_fixup_resume: 3031 start = __start_pci_fixups_resume; 3032 end = __end_pci_fixups_resume; 3033 break; 3034 3035 case pci_fixup_resume_early: 3036 start = __start_pci_fixups_resume_early; 3037 end = __end_pci_fixups_resume_early; 3038 break; 3039 3040 case pci_fixup_suspend: 3041 start = __start_pci_fixups_suspend; 3042 end = __end_pci_fixups_suspend; 3043 break; 3044 3045 default: 3046 /* stupid compiler warning, you would think with an enum... */ 3047 return; 3048 } 3049 pci_do_fixups(dev, start, end); 3050 } 3051 EXPORT_SYMBOL(pci_fixup_device); 3052 3053 3054 static int __init pci_apply_final_quirks(void) 3055 { 3056 struct pci_dev *dev = NULL; 3057 u8 cls = 0; 3058 u8 tmp; 3059 3060 if (pci_cache_line_size) 3061 printk(KERN_DEBUG "PCI: CLS %u bytes\n", 3062 pci_cache_line_size << 2); 3063 3064 pci_apply_fixup_final_quirks = true; 3065 for_each_pci_dev(dev) { 3066 pci_fixup_device(pci_fixup_final, dev); 3067 /* 3068 * If arch hasn't set it explicitly yet, use the CLS 3069 * value shared by all PCI devices. If there's a 3070 * mismatch, fall back to the default value. 3071 */ 3072 if (!pci_cache_line_size) { 3073 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp); 3074 if (!cls) 3075 cls = tmp; 3076 if (!tmp || cls == tmp) 3077 continue; 3078 3079 printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), " 3080 "using %u bytes\n", cls << 2, tmp << 2, 3081 pci_dfl_cache_line_size << 2); 3082 pci_cache_line_size = pci_dfl_cache_line_size; 3083 } 3084 } 3085 3086 if (!pci_cache_line_size) { 3087 printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n", 3088 cls << 2, pci_dfl_cache_line_size << 2); 3089 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size; 3090 } 3091 3092 return 0; 3093 } 3094 3095 fs_initcall_sync(pci_apply_final_quirks); 3096 3097 /* 3098 * Followings are device-specific reset methods which can be used to 3099 * reset a single function if other methods (e.g. FLR, PM D0->D3) are 3100 * not available. 3101 */ 3102 static int reset_intel_generic_dev(struct pci_dev *dev, int probe) 3103 { 3104 int pos; 3105 3106 /* only implement PCI_CLASS_SERIAL_USB at present */ 3107 if (dev->class == PCI_CLASS_SERIAL_USB) { 3108 pos = pci_find_capability(dev, PCI_CAP_ID_VNDR); 3109 if (!pos) 3110 return -ENOTTY; 3111 3112 if (probe) 3113 return 0; 3114 3115 pci_write_config_byte(dev, pos + 0x4, 1); 3116 msleep(100); 3117 3118 return 0; 3119 } else { 3120 return -ENOTTY; 3121 } 3122 } 3123 3124 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe) 3125 { 3126 int i; 3127 u16 status; 3128 3129 /* 3130 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf 3131 * 3132 * The 82599 supports FLR on VFs, but FLR support is reported only 3133 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5). 3134 * Therefore, we can't use pcie_flr(), which checks the VF DEVCAP. 3135 */ 3136 3137 if (probe) 3138 return 0; 3139 3140 /* Wait for Transaction Pending bit clean */ 3141 for (i = 0; i < 4; i++) { 3142 if (i) 3143 msleep((1 << (i - 1)) * 100); 3144 3145 pcie_capability_read_word(dev, PCI_EXP_DEVSTA, &status); 3146 if (!(status & PCI_EXP_DEVSTA_TRPND)) 3147 goto clear; 3148 } 3149 3150 dev_err(&dev->dev, "transaction is not cleared; " 3151 "proceeding with reset anyway\n"); 3152 3153 clear: 3154 pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR); 3155 3156 msleep(100); 3157 3158 return 0; 3159 } 3160 3161 #include "../gpu/drm/i915/i915_reg.h" 3162 #define MSG_CTL 0x45010 3163 #define NSDE_PWR_STATE 0xd0100 3164 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */ 3165 3166 static int reset_ivb_igd(struct pci_dev *dev, int probe) 3167 { 3168 void __iomem *mmio_base; 3169 unsigned long timeout; 3170 u32 val; 3171 3172 if (probe) 3173 return 0; 3174 3175 mmio_base = pci_iomap(dev, 0, 0); 3176 if (!mmio_base) 3177 return -ENOMEM; 3178 3179 iowrite32(0x00000002, mmio_base + MSG_CTL); 3180 3181 /* 3182 * Clobbering SOUTH_CHICKEN2 register is fine only if the next 3183 * driver loaded sets the right bits. However, this's a reset and 3184 * the bits have been set by i915 previously, so we clobber 3185 * SOUTH_CHICKEN2 register directly here. 3186 */ 3187 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2); 3188 3189 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe; 3190 iowrite32(val, mmio_base + PCH_PP_CONTROL); 3191 3192 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT); 3193 do { 3194 val = ioread32(mmio_base + PCH_PP_STATUS); 3195 if ((val & 0xb0000000) == 0) 3196 goto reset_complete; 3197 msleep(10); 3198 } while (time_before(jiffies, timeout)); 3199 dev_warn(&dev->dev, "timeout during reset\n"); 3200 3201 reset_complete: 3202 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE); 3203 3204 pci_iounmap(dev, mmio_base); 3205 return 0; 3206 } 3207 3208 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed 3209 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156 3210 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166 3211 3212 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = { 3213 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF, 3214 reset_intel_82599_sfp_virtfn }, 3215 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA, 3216 reset_ivb_igd }, 3217 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA, 3218 reset_ivb_igd }, 3219 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, 3220 reset_intel_generic_dev }, 3221 { 0 } 3222 }; 3223 3224 /* 3225 * These device-specific reset methods are here rather than in a driver 3226 * because when a host assigns a device to a guest VM, the host may need 3227 * to reset the device but probably doesn't have a driver for it. 3228 */ 3229 int pci_dev_specific_reset(struct pci_dev *dev, int probe) 3230 { 3231 const struct pci_dev_reset_methods *i; 3232 3233 for (i = pci_dev_reset_methods; i->reset; i++) { 3234 if ((i->vendor == dev->vendor || 3235 i->vendor == (u16)PCI_ANY_ID) && 3236 (i->device == dev->device || 3237 i->device == (u16)PCI_ANY_ID)) 3238 return i->reset(dev, probe); 3239 } 3240 3241 return -ENOTTY; 3242 } 3243 3244 static struct pci_dev *pci_func_0_dma_source(struct pci_dev *dev) 3245 { 3246 if (!PCI_FUNC(dev->devfn)) 3247 return pci_dev_get(dev); 3248 3249 return pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0)); 3250 } 3251 3252 static const struct pci_dev_dma_source { 3253 u16 vendor; 3254 u16 device; 3255 struct pci_dev *(*dma_source)(struct pci_dev *dev); 3256 } pci_dev_dma_source[] = { 3257 /* 3258 * https://bugzilla.redhat.com/show_bug.cgi?id=605888 3259 * 3260 * Some Ricoh devices use the function 0 source ID for DMA on 3261 * other functions of a multifunction device. The DMA devices 3262 * is therefore function 0, which will have implications of the 3263 * iommu grouping of these devices. 3264 */ 3265 { PCI_VENDOR_ID_RICOH, 0xe822, pci_func_0_dma_source }, 3266 { PCI_VENDOR_ID_RICOH, 0xe230, pci_func_0_dma_source }, 3267 { PCI_VENDOR_ID_RICOH, 0xe832, pci_func_0_dma_source }, 3268 { PCI_VENDOR_ID_RICOH, 0xe476, pci_func_0_dma_source }, 3269 { 0 } 3270 }; 3271 3272 /* 3273 * IOMMUs with isolation capabilities need to be programmed with the 3274 * correct source ID of a device. In most cases, the source ID matches 3275 * the device doing the DMA, but sometimes hardware is broken and will 3276 * tag the DMA as being sourced from a different device. This function 3277 * allows that translation. Note that the reference count of the 3278 * returned device is incremented on all paths. 3279 */ 3280 struct pci_dev *pci_get_dma_source(struct pci_dev *dev) 3281 { 3282 const struct pci_dev_dma_source *i; 3283 3284 for (i = pci_dev_dma_source; i->dma_source; i++) { 3285 if ((i->vendor == dev->vendor || 3286 i->vendor == (u16)PCI_ANY_ID) && 3287 (i->device == dev->device || 3288 i->device == (u16)PCI_ANY_ID)) 3289 return i->dma_source(dev); 3290 } 3291 3292 return pci_dev_get(dev); 3293 } 3294 3295 static const struct pci_dev_acs_enabled { 3296 u16 vendor; 3297 u16 device; 3298 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags); 3299 } pci_dev_acs_enabled[] = { 3300 { 0 } 3301 }; 3302 3303 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags) 3304 { 3305 const struct pci_dev_acs_enabled *i; 3306 int ret; 3307 3308 /* 3309 * Allow devices that do not expose standard PCIe ACS capabilities 3310 * or control to indicate their support here. Multi-function express 3311 * devices which do not allow internal peer-to-peer between functions, 3312 * but do not implement PCIe ACS may wish to return true here. 3313 */ 3314 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) { 3315 if ((i->vendor == dev->vendor || 3316 i->vendor == (u16)PCI_ANY_ID) && 3317 (i->device == dev->device || 3318 i->device == (u16)PCI_ANY_ID)) { 3319 ret = i->acs_enabled(dev, acs_flags); 3320 if (ret >= 0) 3321 return ret; 3322 } 3323 } 3324 3325 return -ENOTTY; 3326 } 3327