linux/drivers/pci/quirks.c
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   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 */
  40static void quirk_mmio_always_on(struct pci_dev *dev)
  41{
  42        dev->mmio_always_on = 1;
  43}
  44DECLARE_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 */
  51static void quirk_mellanox_tavor(struct pci_dev *dev)
  52{
  53        dev->broken_parity_status = 1;  /* This device gives false positives */
  54}
  55DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
  56DECLARE_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 */
  60static 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}
  76DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82441,      quirk_passive_release);
  77DECLARE_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    
  86static 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         */
  97DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_82C586_0,     quirk_isa_dma_hangs);
  98DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_82C596,       quirk_isa_dma_hangs);
  99DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82371SB_0,  quirk_isa_dma_hangs);
 100DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL,       PCI_DEVICE_ID_AL_M1533,         quirk_isa_dma_hangs);
 101DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,      PCI_DEVICE_ID_NEC_CBUS_1,       quirk_isa_dma_hangs);
 102DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,      PCI_DEVICE_ID_NEC_CBUS_2,       quirk_isa_dma_hangs);
 103DECLARE_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 */
 109static 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}
 123DECLARE_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 */
 128static 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}
 135DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,       PCI_DEVICE_ID_SI_5597,          quirk_nopcipci);
 136DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,       PCI_DEVICE_ID_SI_496,           quirk_nopcipci);
 137
 138static 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}
 148DECLARE_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 */
 153static 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}
 160DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82437,      quirk_triton);
 161DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82437VX,    quirk_triton);
 162DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82439,      quirk_triton);
 163DECLARE_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 */
 176static 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");
 218exit:
 219        pci_dev_put(p);
 220}
 221DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_8363_0,       quirk_vialatency);
 222DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_8371_1,       quirk_vialatency);
 223DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_8361,         quirk_vialatency);
 224/* Must restore this on a resume from RAM */
 225DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8363_0,       quirk_vialatency);
 226DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8371_1,       quirk_vialatency);
 227DECLARE_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 */
 232static 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}
 239DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_82C597_0,     quirk_viaetbf);
 240
 241static 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}
 248DECLARE_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 */     
 256static 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}
 263DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL,       PCI_DEVICE_ID_AL_M1647,         quirk_alimagik);
 264DECLARE_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 */
 270static 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}
 277DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82441,      quirk_natoma);
 278DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82443LX_0,  quirk_natoma);
 279DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82443LX_1,  quirk_natoma);
 280DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82443BX_0,  quirk_natoma);
 281DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82443BX_1,  quirk_natoma);
 282DECLARE_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 */
 288static void quirk_citrine(struct pci_dev *dev)
 289{
 290        dev->cfg_size = 0xA0;
 291}
 292DECLARE_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 */
 298static 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}
 307DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3,      PCI_DEVICE_ID_S3_868,           quirk_s3_64M);
 308DECLARE_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 */
 316static 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}
 325DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
 326
 327static 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 */
 355static 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}
 362DECLARE_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 */
 375static void quirk_ali7101_acpi(struct pci_dev *dev)
 376{
 377        u16 region;
 378
 379        pci_read_config_word(dev, 0xE0, &region);
 380        quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
 381        pci_read_config_word(dev, 0xE2, &region);
 382        quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
 383}
 384DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL,      PCI_DEVICE_ID_AL_M7101,         quirk_ali7101_acpi);
 385
 386static 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
 412static 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 */
 443static void quirk_piix4_acpi(struct pci_dev *dev)
 444{
 445        u32 region, res_a;
 446
 447        pci_read_config_dword(dev, 0x40, &region);
 448        quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
 449        pci_read_config_dword(dev, 0x90, &region);
 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}
 473DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82371AB_3,  quirk_piix4_acpi);
 474DECLARE_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 */
 492static 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, &region);
 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, &region);
 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}
 523DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801AA_0,         quirk_ich4_lpc_acpi);
 524DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801AB_0,         quirk_ich4_lpc_acpi);
 525DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801BA_0,         quirk_ich4_lpc_acpi);
 526DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801BA_10,        quirk_ich4_lpc_acpi);
 527DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801CA_0,         quirk_ich4_lpc_acpi);
 528DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801CA_12,        quirk_ich4_lpc_acpi);
 529DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801DB_0,         quirk_ich4_lpc_acpi);
 530DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801DB_12,        quirk_ich4_lpc_acpi);
 531DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801EB_0,         quirk_ich4_lpc_acpi);
 532DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_ESB_1,             quirk_ich4_lpc_acpi);
 533
 534static 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, &region);
 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, &region);
 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
 558static 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
 586static 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}
 595DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
 596DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
 597
 598static 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 */
 622static 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}
 633DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
 634DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
 635DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
 636DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
 637DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
 638DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
 639DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
 640DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
 641DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
 642DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
 643DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
 644DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
 645DECLARE_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 */
 651static 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, &region);
 657                region &= PCI_BASE_ADDRESS_IO_MASK;
 658                quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
 659        }
 660}
 661DECLARE_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 */
 669static 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}
 684DECLARE_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 */
 691static 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}
 703DECLARE_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 */
 709static 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}
 722DECLARE_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 */
 736static 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}
 751DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_82C686,       quirk_via_ioapic);
 752DECLARE_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 */
 760static 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}
 771DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_8237,         quirk_via_vt8237_bypass_apic_deassert);
 772DECLARE_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 */
 783static 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}
 790DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,      PCI_DEVICE_ID_AMD_VIPER_7410,   quirk_amd_ioapic);
 791
 792static void quirk_ioapic_rmw(struct pci_dev *dev)
 793{
 794        if (dev->devfn == 0 && dev->bus->number == 0)
 795                sis_apic_bug = 1;
 796}
 797DECLARE_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 */
 804static 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}
 812DECLARE_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 */
 822static 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}
 833DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_82C586_3,     quirk_via_acpi);
 834DECLARE_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
 841static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
 842
 843static 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}
 869DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_82C686,       quirk_via_bridge);
 870DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8231,         quirk_via_bridge);
 871DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8233_0,       quirk_via_bridge);
 872DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8233A,        quirk_via_bridge);
 873DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8233C_0,      quirk_via_bridge);
 874DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8235,         quirk_via_bridge);
 875DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8237,         quirk_via_bridge);
 876DECLARE_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
 891static 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}
 921DECLARE_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 */
 929static 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}
 934DECLARE_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 */
 942static void quirk_cardbus_legacy(struct pci_dev *dev)
 943{
 944        pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
 945}
 946DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
 947                        PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
 948DECLARE_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 */
 958static 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}
 971DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,      PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
 972DECLARE_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 */
 981static void quirk_dunord(struct pci_dev *dev)
 982{
 983        struct resource *r = &dev->resource [1];
 984        r->start = 0;
 985        r->end = 0xffffff;
 986}
 987DECLARE_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 */
 995static void quirk_transparent_bridge(struct pci_dev *dev)
 996{
 997        dev->transparent = 1;
 998}
 999DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82380FB,    quirk_transparent_bridge);
1000DECLARE_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 */
1008static void quirk_mediagx_master(struct pci_dev *dev)
1009{
1010        u8 reg;
1011        pci_read_config_byte(dev, 0x41, &reg);
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}
1018DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX,    PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1019DECLARE_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 */
1026static 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}
1039DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82454NX,    quirk_disable_pxb);
1040DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,     PCI_DEVICE_ID_INTEL_82454NX,    quirk_disable_pxb);
1041
1042static 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}
1059DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1060DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1061DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1062DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1063DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1064DECLARE_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 */
1069static 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}
1080DECLARE_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 */
1085static 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}
1098DECLARE_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
1104static 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 */
1109DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1110                                PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1111DECLARE_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 */
1114DECLARE_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 */
1118DECLARE_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 */
1124static void quirk_eisa_bridge(struct pci_dev *dev)
1125{
1126        dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1127}
1128DECLARE_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 */
1156static int asus_hides_smbus;
1157
1158static 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}
1276DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82845_HB,   asus_hides_smbus_hostbridge);
1277DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82845G_HB,  asus_hides_smbus_hostbridge);
1278DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82850_HB,   asus_hides_smbus_hostbridge);
1279DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82865_HB,   asus_hides_smbus_hostbridge);
1280DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82875_HB,   asus_hides_smbus_hostbridge);
1281DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_7205_0,     asus_hides_smbus_hostbridge);
1282DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_E7501_MCH,  asus_hides_smbus_hostbridge);
1283DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1284DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1285DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1286
1287DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82810_IG3,  asus_hides_smbus_hostbridge);
1288DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82801DB_2,  asus_hides_smbus_hostbridge);
1289DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82815_CGC,  asus_hides_smbus_hostbridge);
1290
1291static 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}
1308DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82801AA_0,  asus_hides_smbus_lpc);
1309DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82801DB_0,  asus_hides_smbus_lpc);
1310DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82801BA_0,  asus_hides_smbus_lpc);
1311DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82801CA_0,  asus_hides_smbus_lpc);
1312DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1313DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1314DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82801EB_0,  asus_hides_smbus_lpc);
1315DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,     PCI_DEVICE_ID_INTEL_82801AA_0,  asus_hides_smbus_lpc);
1316DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,     PCI_DEVICE_ID_INTEL_82801DB_0,  asus_hides_smbus_lpc);
1317DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,     PCI_DEVICE_ID_INTEL_82801BA_0,  asus_hides_smbus_lpc);
1318DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,     PCI_DEVICE_ID_INTEL_82801CA_0,  asus_hides_smbus_lpc);
1319DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,     PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1320DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,     PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1321DECLARE_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 */
1324static void __iomem *asus_rcba_base;
1325static 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
1340static 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
1351static 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
1360static 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}
1366DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH6_1,     asus_hides_smbus_lpc_ich6);
1367DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_ICH6_1,     asus_hides_smbus_lpc_ich6_suspend);
1368DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH6_1,     asus_hides_smbus_lpc_ich6_resume);
1369DECLARE_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 */
1374static 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}
1383DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,      PCI_DEVICE_ID_SI_961,           quirk_sis_96x_smbus);
1384DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,      PCI_DEVICE_ID_SI_962,           quirk_sis_96x_smbus);
1385DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,      PCI_DEVICE_ID_SI_963,           quirk_sis_96x_smbus);
1386DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,      PCI_DEVICE_ID_SI_LPC,           quirk_sis_96x_smbus);
1387DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,        PCI_DEVICE_ID_SI_961,           quirk_sis_96x_smbus);
1388DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,        PCI_DEVICE_ID_SI_962,           quirk_sis_96x_smbus);
1389DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,        PCI_DEVICE_ID_SI_963,           quirk_sis_96x_smbus);
1390DECLARE_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
1402static 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, &reg);
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}
1423DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,      PCI_DEVICE_ID_SI_503,           quirk_sis_503);
1424DECLARE_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 */
1433static 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}
1456DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1457DECLARE_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 */
1466static 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}
1519DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1520DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1521DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1522DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1523DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1524DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1525DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1526DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1527DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1528DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1529DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1530DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1531DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1532DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1533DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1534DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1535DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1536DECLARE_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
1541static 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}
1561DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_EESSC,      quirk_alder_ioapic);
1562#endif
1563
1564static void quirk_pcie_mch(struct pci_dev *pdev)
1565{
1566        pci_msi_off(pdev);
1567        pdev->no_msi = 1;
1568}
1569DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_E7520_MCH,  quirk_pcie_mch);
1570DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_E7320_MCH,  quirk_pcie_mch);
1571DECLARE_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 */
1578static 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}
1584DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_PXHD_0,     quirk_pcie_pxh);
1585DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_PXHD_1,     quirk_pcie_pxh);
1586DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_PXH_0,      quirk_pcie_pxh);
1587DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_PXH_1,      quirk_pcie_pxh);
1588DECLARE_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 */
1594static void quirk_intel_pcie_pm(struct pci_dev * dev)
1595{
1596        pci_pm_d3_delay = 120;
1597        dev->no_d1d2 = 1;
1598}
1599
1600DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25e2, quirk_intel_pcie_pm);
1601DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25e3, quirk_intel_pcie_pm);
1602DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25e4, quirk_intel_pcie_pm);
1603DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25e5, quirk_intel_pcie_pm);
1604DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25e6, quirk_intel_pcie_pm);
1605DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25e7, quirk_intel_pcie_pm);
1606DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25f7, quirk_intel_pcie_pm);
1607DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25f8, quirk_intel_pcie_pm);
1608DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25f9, quirk_intel_pcie_pm);
1609DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x25fa, quirk_intel_pcie_pm);
1610DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2601, quirk_intel_pcie_pm);
1611DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2602, quirk_intel_pcie_pm);
1612DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2603, quirk_intel_pcie_pm);
1613DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2604, quirk_intel_pcie_pm);
1614DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2605, quirk_intel_pcie_pm);
1615DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2606, quirk_intel_pcie_pm);
1616DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2607, quirk_intel_pcie_pm);
1617DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2608, quirk_intel_pcie_pm);
1618DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x2609, quirk_intel_pcie_pm);
1619DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    0x260a, quirk_intel_pcie_pm);
1620DECLARE_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 */
1629static 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}
1638DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_80333_0,    quirk_reroute_to_boot_interrupts_intel);
1639DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_80333_1,    quirk_reroute_to_boot_interrupts_intel);
1640DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_ESB2_0,     quirk_reroute_to_boot_interrupts_intel);
1641DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_PXH_0,      quirk_reroute_to_boot_interrupts_intel);
1642DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_PXH_1,      quirk_reroute_to_boot_interrupts_intel);
1643DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_PXHV,       quirk_reroute_to_boot_interrupts_intel);
1644DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_80332_0,    quirk_reroute_to_boot_interrupts_intel);
1645DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_80332_1,    quirk_reroute_to_boot_interrupts_intel);
1646DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_80333_0,    quirk_reroute_to_boot_interrupts_intel);
1647DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_80333_1,    quirk_reroute_to_boot_interrupts_intel);
1648DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ESB2_0,     quirk_reroute_to_boot_interrupts_intel);
1649DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_PXH_0,      quirk_reroute_to_boot_interrupts_intel);
1650DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_PXH_1,      quirk_reroute_to_boot_interrupts_intel);
1651DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_PXHV,       quirk_reroute_to_boot_interrupts_intel);
1652DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_80332_0,    quirk_reroute_to_boot_interrupts_intel);
1653DECLARE_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
1667static 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}
1681DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ESB_10,      quirk_disable_intel_boot_interrupt);
1682DECLARE_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
1692static 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}
1714DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_HT1000SB,        quirk_disable_broadcom_boot_interrupt);
1715DECLARE_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
1730static 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}
1747DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,      PCI_DEVICE_ID_AMD_8131_BRIDGE,  quirk_disable_amd_813x_boot_interrupt);
1748DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,     PCI_DEVICE_ID_AMD_8131_BRIDGE,  quirk_disable_amd_813x_boot_interrupt);
1749DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,      PCI_DEVICE_ID_AMD_8132_BRIDGE,  quirk_disable_amd_813x_boot_interrupt);
1750DECLARE_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
1754static 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}
1771DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8111_SMBUS,      quirk_disable_amd_8111_boot_interrupt);
1772DECLARE_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 */
1780static 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}
1789DECLARE_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 */
1800static 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}
1818DECLARE_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 */
1829DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
1830DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
1831
1832static 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}
1867DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
1868                         PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
1869
1870static 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}
1936DECLARE_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 */
1943static 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}
1948DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
1949DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
1950DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
1951DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
1952DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
1953DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
1954DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
1955DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
1956DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
1957DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
1958DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
1959DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
1960DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
1961DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
1962
1963static 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}
1974DECLARE_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 */
1977static 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}
1988DECLARE_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 */
1994static 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}
2005DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA,  PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2006                        quirk_nvidia_ck804_pcie_aer_ext_cap);
2007DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA,  PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2008                        quirk_nvidia_ck804_pcie_aer_ext_cap);
2009
2010static 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}
2060DECLARE_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 */
2073static 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
2090DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2091                        PCI_DEVICE_ID_NX2_5706,
2092                        quirk_brcm_570x_limit_vpd);
2093DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2094                        PCI_DEVICE_ID_NX2_5706S,
2095                        quirk_brcm_570x_limit_vpd);
2096DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2097                        PCI_DEVICE_ID_NX2_5708,
2098                        quirk_brcm_570x_limit_vpd);
2099DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2100                        PCI_DEVICE_ID_NX2_5708S,
2101                        quirk_brcm_570x_limit_vpd);
2102DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2103                        PCI_DEVICE_ID_NX2_5709,
2104                        quirk_brcm_570x_limit_vpd);
2105DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2106                        PCI_DEVICE_ID_NX2_5709S,
2107                        quirk_brcm_570x_limit_vpd);
2108
2109static 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
2123DECLARE_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 */
2133static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2134{
2135        u8 reg;
2136
2137        if (pci_read_config_byte(dev, 0xF4, &reg) == 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
2143DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2144                        quirk_unhide_mch_dev6);
2145DECLARE_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 */
2157static 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}
2164DECLARE_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 */
2174static 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}
2179DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2180DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2181DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2182DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2183DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2184DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2185DECLARE_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 */
2188static 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}
2196DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2197DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2198DECLARE_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 */
2206static 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}
2217DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2218DECLARE_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 */
2222static 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 */
2246static 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}
2254DECLARE_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 */
2260static 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}
2280DECLARE_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 */
2284static 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}
2303DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2304                         PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2305                         ht_enable_msi_mapping);
2306
2307DECLARE_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 */
2314static 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}
2326DECLARE_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 */
2340static 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
2356DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2357                        PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2358                        nvbridge_check_legacy_irq_routing);
2359
2360DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2361                        PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2362                        nvbridge_check_legacy_irq_routing);
2363
2364static 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
2392static 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
2426static 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
2446out:
2447        return end;
2448}
2449
2450static 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
2485out:
2486        pci_dev_put(host_bridge);
2487}
2488
2489static 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
2509static 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
2556out:
2557        pci_dev_put(host_bridge);
2558}
2559
2560static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2561{
2562        return __nv_msi_ht_cap_quirk(dev, 1);
2563}
2564
2565static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2566{
2567        return __nv_msi_ht_cap_quirk(dev, 0);
2568}
2569
2570DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2571DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2572
2573DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2574DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2575
2576static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
2577{
2578        dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2579}
2580static 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}
2597DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2598                        PCI_DEVICE_ID_TIGON3_5780,
2599                        quirk_msi_intx_disable_bug);
2600DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2601                        PCI_DEVICE_ID_TIGON3_5780S,
2602                        quirk_msi_intx_disable_bug);
2603DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2604                        PCI_DEVICE_ID_TIGON3_5714,
2605                        quirk_msi_intx_disable_bug);
2606DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2607                        PCI_DEVICE_ID_TIGON3_5714S,
2608                        quirk_msi_intx_disable_bug);
2609DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2610                        PCI_DEVICE_ID_TIGON3_5715,
2611                        quirk_msi_intx_disable_bug);
2612DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2613                        PCI_DEVICE_ID_TIGON3_5715S,
2614                        quirk_msi_intx_disable_bug);
2615
2616DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2617                        quirk_msi_intx_disable_ati_bug);
2618DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2619                        quirk_msi_intx_disable_ati_bug);
2620DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2621                        quirk_msi_intx_disable_ati_bug);
2622DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2623                        quirk_msi_intx_disable_ati_bug);
2624DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2625                        quirk_msi_intx_disable_ati_bug);
2626
2627DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2628                        quirk_msi_intx_disable_bug);
2629DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2630                        quirk_msi_intx_disable_bug);
2631DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2632                        quirk_msi_intx_disable_bug);
2633
2634DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
2635                        quirk_msi_intx_disable_bug);
2636DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
2637                        quirk_msi_intx_disable_bug);
2638DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
2639                        quirk_msi_intx_disable_bug);
2640DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
2641                        quirk_msi_intx_disable_bug);
2642DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
2643                        quirk_msi_intx_disable_bug);
2644DECLARE_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 */
2654static void quirk_hotplug_bridge(struct pci_dev *dev)
2655{
2656        dev->is_hotplug_bridge = 1;
2657}
2658
2659DECLARE_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
2689static 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}
2715DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2716DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2717
2718static 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}
2765DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2766DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2767DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2768DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2769DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2770DECLARE_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 */
2786static 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}
2793DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
2794DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
2795#endif
2796
2797static 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}
2803DECLARE_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 */
2809static void fixup_mpss_256(struct pci_dev *dev)
2810{
2811        dev->pcie_mpss = 1; /* 256 bytes */
2812}
2813DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
2814                         PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
2815DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
2816                         PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
2817DECLARE_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 */
2827static 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 */
2862DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
2863DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
2864DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
2865DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
2866DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
2867DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
2868DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
2869DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
2870DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
2871DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
2872DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
2873DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
2874DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
2875DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
2876/* Intel 5100 series memory controllers and ports 2-7 */
2877DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
2878DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
2879DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
2880DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
2881DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
2882DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
2883DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
2884DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
2885DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
2886DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
2887DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
2888
2889
2890static 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
2905static 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
2933static 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}
2951DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
2952DECLARE_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 */
2959static void quirk_broken_intx_masking(struct pci_dev *dev)
2960{
2961        dev->broken_intx_masking = 1;
2962}
2963DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, 0x0030,
2964                         quirk_broken_intx_masking);
2965DECLARE_PCI_FIXUP_HEADER(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
2966                         quirk_broken_intx_masking);
2967
2968static 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
2986extern struct pci_fixup __start_pci_fixups_early[];
2987extern struct pci_fixup __end_pci_fixups_early[];
2988extern struct pci_fixup __start_pci_fixups_header[];
2989extern struct pci_fixup __end_pci_fixups_header[];
2990extern struct pci_fixup __start_pci_fixups_final[];
2991extern struct pci_fixup __end_pci_fixups_final[];
2992extern struct pci_fixup __start_pci_fixups_enable[];
2993extern struct pci_fixup __end_pci_fixups_enable[];
2994extern struct pci_fixup __start_pci_fixups_resume[];
2995extern struct pci_fixup __end_pci_fixups_resume[];
2996extern struct pci_fixup __start_pci_fixups_resume_early[];
2997extern struct pci_fixup __end_pci_fixups_resume_early[];
2998extern struct pci_fixup __start_pci_fixups_suspend[];
2999extern struct pci_fixup __end_pci_fixups_suspend[];
3000
3001static bool pci_apply_fixup_final_quirks;
3002
3003void 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}
3051EXPORT_SYMBOL(pci_fixup_device);
3052
3053
3054static 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
3095fs_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 */
3102static 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
3124static 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
3153clear:
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
3166static 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
3201reset_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
3212static 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 */
3229int 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
3244static 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
3252static 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 */
3280struct 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
3295static 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
3303int 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
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