/*
   *  This file contains work-arounds for many known PCI hardware
   *  bugs.  Devices present only on certain architectures (host
   *  bridges et cetera) should be handled in arch-specific code.
   *
   *  Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
   *
   *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
   *
   *  Init/reset quirks for USB host controllers should be in the
   *  USB quirks file, where their drivers can access reuse it.
   */
  
  #include <linux/types.h>
  #include <linux/kernel.h>
  #include <linux/export.h>
  #include <linux/pci.h>
  #include <linux/init.h>
  #include <linux/delay.h>
  #include <linux/acpi.h>
  #include <linux/kallsyms.h>
  #include <linux/dmi.h>
  #include <linux/pci-aspm.h>
  #include <linux/ioport.h>
  #include <linux/sched.h>
  #include <linux/ktime.h>
  #include <linux/mm.h>
  #include <asm/dma.h>	/* isa_dma_bridge_buggy */
  #include "pci.h"
  
  /*
   * Decoding should be disabled for a PCI device during BAR sizing to avoid
   * conflict. But doing so may cause problems on host bridge and perhaps other
   * key system devices. For devices that need to have mmio decoding always-on,
   * we need to set the dev->mmio_always_on bit.
   */
  static void quirk_mmio_always_on(struct pci_dev *dev)
  {
  	dev->mmio_always_on = 1;
  }
  DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
  				PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
  
  /* The Mellanox Tavor device gives false positive parity errors
   * Mark this device with a broken_parity_status, to allow
   * PCI scanning code to "skip" this now blacklisted device.
   */
  static void quirk_mellanox_tavor(struct pci_dev *dev)
  {
  	dev->broken_parity_status = 1;	/* This device gives false positives */
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
  
  /* Deal with broken BIOSes that neglect to enable passive release,
     which can cause problems in combination with the 82441FX/PPro MTRRs */
  static void quirk_passive_release(struct pci_dev *dev)
  {
  	struct pci_dev *d = NULL;
  	unsigned char dlc;
  
  	/* We have to make sure a particular bit is set in the PIIX3
  	   ISA bridge, so we have to go out and find it. */
  	while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
  		pci_read_config_byte(d, 0x82, &dlc);
  		if (!(dlc & 1<<1)) {
  			dev_info(&d->dev, "PIIX3: Enabling Passive Release
  ");
  			dlc |= 1<<1;
  			pci_write_config_byte(d, 0x82, dlc);
  		}
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82441,	quirk_passive_release);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82441,	quirk_passive_release);
  
  /*  The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
      but VIA don't answer queries. If you happen to have good contacts at VIA
      ask them for me please -- Alan
  
      This appears to be BIOS not version dependent. So presumably there is a
      chipset level fix */
  
  static void quirk_isa_dma_hangs(struct pci_dev *dev)
  {
  	if (!isa_dma_bridge_buggy) {
  		isa_dma_bridge_buggy=1;
  		dev_info(&dev->dev, "Activating ISA DMA hang workarounds
  ");
  	}
  }
  	/*
  	 * Its not totally clear which chipsets are the problematic ones
  	 * We know 82C586 and 82C596 variants are affected.
  	 */
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_0,	quirk_isa_dma_hangs);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C596,	quirk_isa_dma_hangs);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82371SB_0,  quirk_isa_dma_hangs);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL,	PCI_DEVICE_ID_AL_M1533,		quirk_isa_dma_hangs);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_1,	quirk_isa_dma_hangs);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_2,	quirk_isa_dma_hangs);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_3,	quirk_isa_dma_hangs);
  
  /*
   * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
   * for some HT machines to use C4 w/o hanging.
   */
  static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
  {
  	u32 pmbase;
  	u16 pm1a;
  
  	pci_read_config_dword(dev, 0x40, &pmbase);
  	pmbase = pmbase & 0xff80;
  	pm1a = inw(pmbase);
  
  	if (pm1a & 0x10) {
  		dev_info(&dev->dev, FW_BUG "TigerPoint LPC.BM_STS cleared
  ");
  		outw(0x10, pmbase);
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
  
  /*
   *	Chipsets where PCI->PCI transfers vanish or hang
   */
  static void quirk_nopcipci(struct pci_dev *dev)
  {
  	if ((pci_pci_problems & PCIPCI_FAIL)==0) {
  		dev_info(&dev->dev, "Disabling direct PCI/PCI transfers
  ");
  		pci_pci_problems |= PCIPCI_FAIL;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_5597,		quirk_nopcipci);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_496,		quirk_nopcipci);
  
  static void quirk_nopciamd(struct pci_dev *dev)
  {
  	u8 rev;
  	pci_read_config_byte(dev, 0x08, &rev);
  	if (rev == 0x13) {
  		/* Erratum 24 */
  		dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers
  ");
  		pci_pci_problems |= PCIAGP_FAIL;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8151_0,	quirk_nopciamd);
  
  /*
   *	Triton requires workarounds to be used by the drivers
   */
  static void quirk_triton(struct pci_dev *dev)
  {
  	if ((pci_pci_problems&PCIPCI_TRITON)==0) {
  		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers
  ");
  		pci_pci_problems |= PCIPCI_TRITON;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82437,	quirk_triton);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82437VX,	quirk_triton);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82439,	quirk_triton);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82439TX,	quirk_triton);
  
  /*
   *	VIA Apollo KT133 needs PCI latency patch
   *	Made according to a windows driver based patch by George E. Breese
   *	see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
   *	and http://www.georgebreese.com/net/software/#PCI
   *      Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
   *      the info on which Mr Breese based his work.
   *
   *	Updated based on further information from the site and also on
   *	information provided by VIA
   */
  static void quirk_vialatency(struct pci_dev *dev)
  {
  	struct pci_dev *p;
  	u8 busarb;
  	/* Ok we have a potential problem chipset here. Now see if we have
  	   a buggy southbridge */
  
  	p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
  	if (p!=NULL) {
  		/* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
  		/* Check for buggy part revisions */
  		if (p->revision < 0x40 || p->revision > 0x42)
  			goto exit;
  	} else {
  		p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
  		if (p==NULL)	/* No problem parts */
  			goto exit;
  		/* Check for buggy part revisions */
  		if (p->revision < 0x10 || p->revision > 0x12)
  			goto exit;
  	}
  
  	/*
  	 *	Ok we have the problem. Now set the PCI master grant to
  	 *	occur every master grant. The apparent bug is that under high
  	 *	PCI load (quite common in Linux of course) you can get data
  	 *	loss when the CPU is held off the bus for 3 bus master requests
  	 *	This happens to include the IDE controllers....
  	 *
  	 *	VIA only apply this fix when an SB Live! is present but under
  	 *	both Linux and Windows this isn't enough, and we have seen
  	 *	corruption without SB Live! but with things like 3 UDMA IDE
  	 *	controllers. So we ignore that bit of the VIA recommendation..
  	 */
  
  	pci_read_config_byte(dev, 0x76, &busarb);
  	/* Set bit 4 and bi 5 of byte 76 to 0x01
  	   "Master priority rotation on every PCI master grant */
  	busarb &= ~(1<<5);
  	busarb |= (1<<4);
  	pci_write_config_byte(dev, 0x76, busarb);
  	dev_info(&dev->dev, "Applying VIA southbridge workaround
  ");
  exit:
  	pci_dev_put(p);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8363_0,	quirk_vialatency);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8371_1,	quirk_vialatency);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8361,		quirk_vialatency);
  /* Must restore this on a resume from RAM */
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8363_0,	quirk_vialatency);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8371_1,	quirk_vialatency);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8361,		quirk_vialatency);
  
  /*
   *	VIA Apollo VP3 needs ETBF on BT848/878
   */
  static void quirk_viaetbf(struct pci_dev *dev)
  {
  	if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
  		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers
  ");
  		pci_pci_problems |= PCIPCI_VIAETBF;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C597_0,	quirk_viaetbf);
  
  static void quirk_vsfx(struct pci_dev *dev)
  {
  	if ((pci_pci_problems&PCIPCI_VSFX)==0) {
  		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers
  ");
  		pci_pci_problems |= PCIPCI_VSFX;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C576,	quirk_vsfx);
  
  /*
   *	Ali Magik requires workarounds to be used by the drivers
   *	that DMA to AGP space. Latency must be set to 0xA and triton
   *	workaround applied too
   *	[Info kindly provided by ALi]
   */
  static void quirk_alimagik(struct pci_dev *dev)
  {
  	if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
  		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers
  ");
  		pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL,	PCI_DEVICE_ID_AL_M1647,		quirk_alimagik);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL,	PCI_DEVICE_ID_AL_M1651,		quirk_alimagik);
  
  /*
   *	Natoma has some interesting boundary conditions with Zoran stuff
   *	at least
   */
  static void quirk_natoma(struct pci_dev *dev)
  {
  	if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
  		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers
  ");
  		pci_pci_problems |= PCIPCI_NATOMA;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82441,	quirk_natoma);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82443LX_0,	quirk_natoma);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82443LX_1,	quirk_natoma);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82443BX_0,	quirk_natoma);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82443BX_1,	quirk_natoma);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82443BX_2,	quirk_natoma);
  
  /*
   *  This chip can cause PCI parity errors if config register 0xA0 is read
   *  while DMAs are occurring.
   */
  static void quirk_citrine(struct pci_dev *dev)
  {
  	dev->cfg_size = 0xA0;
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM,	PCI_DEVICE_ID_IBM_CITRINE,	quirk_citrine);
  
  /*  On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
  static void quirk_extend_bar_to_page(struct pci_dev *dev)
  {
  	int i;
  
  	for (i = 0; i < PCI_STD_RESOURCE_END; i++) {
  		struct resource *r = &dev->resource[i];
  
  		if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
  			r->end = PAGE_SIZE - 1;
  			r->start = 0;
  			r->flags |= IORESOURCE_UNSET;
  			dev_info(&dev->dev, "expanded BAR %d to page size: %pR
  ",
  				 i, r);
  		}
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page);
  
  /*
   *  S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
   *  If it's needed, re-allocate the region.
   */
  static void quirk_s3_64M(struct pci_dev *dev)
  {
  	struct resource *r = &dev->resource[0];
  
  	if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
  		r->start = 0;
  		r->end = 0x3ffffff;
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3,	PCI_DEVICE_ID_S3_868,		quirk_s3_64M);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3,	PCI_DEVICE_ID_S3_968,		quirk_s3_64M);
  
  /*
   * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
   * ver. 1.33  20070103) don't set the correct ISA PCI region header info.
   * BAR0 should be 8 bytes; instead, it may be set to something like 8k
   * (which conflicts w/ BAR1's memory range).
   */
  static void quirk_cs5536_vsa(struct pci_dev *dev)
  {
  	if (pci_resource_len(dev, 0) != 8) {
  		struct resource *res = &dev->resource[0];
  		res->end = res->start + 8 - 1;
  		dev_info(&dev->dev, "CS5536 ISA bridge bug detected "
  				"(incorrect header); workaround applied.
  ");
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
  
  static void quirk_io_region(struct pci_dev *dev, int port,
  				unsigned size, int nr, const char *name)
  {
  	u16 region;
  	struct pci_bus_region bus_region;
  	struct resource *res = dev->resource + nr;
  
  	pci_read_config_word(dev, port, &region);
  	region &= ~(size - 1);
  
  	if (!region)
  		return;
  
  	res->name = pci_name(dev);
  	res->flags = IORESOURCE_IO;
  
  	/* Convert from PCI bus to resource space */
  	bus_region.start = region;
  	bus_region.end = region + size - 1;
  	pcibios_bus_to_resource(dev->bus, res, &bus_region);
  
  	if (!pci_claim_resource(dev, nr))
  		dev_info(&dev->dev, "quirk: %pR claimed by %s
  ", res, name);
  }
  
  /*
   *	ATI Northbridge setups MCE the processor if you even
   *	read somewhere between 0x3b0->0x3bb or read 0x3d3
   */
  static void quirk_ati_exploding_mce(struct pci_dev *dev)
  {
  	dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb
  ");
  	/* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
  	request_region(0x3b0, 0x0C, "RadeonIGP");
  	request_region(0x3d3, 0x01, "RadeonIGP");
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI,	PCI_DEVICE_ID_ATI_RS100,   quirk_ati_exploding_mce);
  
  /*
   * Let's make the southbridge information explicit instead
   * of having to worry about people probing the ACPI areas,
   * for example.. (Yes, it happens, and if you read the wrong
   * ACPI register it will put the machine to sleep with no
   * way of waking it up again. Bummer).
   *
   * ALI M7101: Two IO regions pointed to by words at
   *	0xE0 (64 bytes of ACPI registers)
   *	0xE2 (32 bytes of SMB registers)
   */
  static void quirk_ali7101_acpi(struct pci_dev *dev)
  {
  	quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
  	quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL,	PCI_DEVICE_ID_AL_M7101,		quirk_ali7101_acpi);
  
  static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
  {
  	u32 devres;
  	u32 mask, size, base;
  
  	pci_read_config_dword(dev, port, &devres);
  	if ((devres & enable) != enable)
  		return;
  	mask = (devres >> 16) & 15;
  	base = devres & 0xffff;
  	size = 16;
  	for (;;) {
  		unsigned bit = size >> 1;
  		if ((bit & mask) == bit)
  			break;
  		size = bit;
  	}
  	/*
  	 * For now we only print it out. Eventually we'll want to
  	 * reserve it (at least if it's in the 0x1000+ range), but
  	 * let's get enough confirmation reports first.
  	 */
  	base &= -size;
  	dev_info(&dev->dev, "%s PIO at %04x-%04x
  ", name, base, base + size - 1);
  }
  
  static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
  {
  	u32 devres;
  	u32 mask, size, base;
  
  	pci_read_config_dword(dev, port, &devres);
  	if ((devres & enable) != enable)
  		return;
  	base = devres & 0xffff0000;
  	mask = (devres & 0x3f) << 16;
  	size = 128 << 16;
  	for (;;) {
  		unsigned bit = size >> 1;
  		if ((bit & mask) == bit)
  			break;
  		size = bit;
  	}
  	/*
  	 * For now we only print it out. Eventually we'll want to
  	 * reserve it, but let's get enough confirmation reports first.
  	 */
  	base &= -size;
  	dev_info(&dev->dev, "%s MMIO at %04x-%04x
  ", name, base, base + size - 1);
  }
  
  /*
   * PIIX4 ACPI: Two IO regions pointed to by longwords at
   *	0x40 (64 bytes of ACPI registers)
   *	0x90 (16 bytes of SMB registers)
   * and a few strange programmable PIIX4 device resources.
   */
  static void quirk_piix4_acpi(struct pci_dev *dev)
  {
  	u32 res_a;
  
  	quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
  	quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
  
  	/* Device resource A has enables for some of the other ones */
  	pci_read_config_dword(dev, 0x5c, &res_a);
  
  	piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
  	piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
  
  	/* Device resource D is just bitfields for static resources */
  
  	/* Device 12 enabled? */
  	if (res_a & (1 << 29)) {
  		piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
  		piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
  	}
  	/* Device 13 enabled? */
  	if (res_a & (1 << 30)) {
  		piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
  		piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
  	}
  	piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
  	piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82371AB_3,	quirk_piix4_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82443MX_3,	quirk_piix4_acpi);
  
  #define ICH_PMBASE	0x40
  #define ICH_ACPI_CNTL	0x44
  #define  ICH4_ACPI_EN	0x10
  #define  ICH6_ACPI_EN	0x80
  #define ICH4_GPIOBASE	0x58
  #define ICH4_GPIO_CNTL	0x5c
  #define  ICH4_GPIO_EN	0x10
  #define ICH6_GPIOBASE	0x48
  #define ICH6_GPIO_CNTL	0x4c
  #define  ICH6_GPIO_EN	0x10
  
  /*
   * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
   *	0x40 (128 bytes of ACPI, GPIO & TCO registers)
   *	0x58 (64 bytes of GPIO I/O space)
   */
  static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
  {
  	u8 enable;
  
  	/*
  	 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
  	 * with low legacy (and fixed) ports. We don't know the decoding
  	 * priority and can't tell whether the legacy device or the one created
  	 * here is really at that address.  This happens on boards with broken
  	 * BIOSes.
  	*/
  
  	pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
  	if (enable & ICH4_ACPI_EN)
  		quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
  				 "ICH4 ACPI/GPIO/TCO");
  
  	pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
  	if (enable & ICH4_GPIO_EN)
  		quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
  				"ICH4 GPIO");
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801AA_0,		quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801AB_0,		quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801BA_0,		quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801BA_10,	quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801CA_0,		quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801CA_12,	quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801DB_0,		quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801DB_12,	quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801EB_0,		quirk_ich4_lpc_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_ESB_1,		quirk_ich4_lpc_acpi);
  
  static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
  {
  	u8 enable;
  
  	pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
  	if (enable & ICH6_ACPI_EN)
  		quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
  				 "ICH6 ACPI/GPIO/TCO");
  
  	pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
  	if (enable & ICH6_GPIO_EN)
  		quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
  				"ICH6 GPIO");
  }
  
  static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
  {
  	u32 val;
  	u32 size, base;
  
  	pci_read_config_dword(dev, reg, &val);
  
  	/* Enabled? */
  	if (!(val & 1))
  		return;
  	base = val & 0xfffc;
  	if (dynsize) {
  		/*
  		 * This is not correct. It is 16, 32 or 64 bytes depending on
  		 * register D31:F0:ADh bits 5:4.
  		 *
  		 * But this gets us at least _part_ of it.
  		 */
  		size = 16;
  	} else {
  		size = 128;
  	}
  	base &= ~(size-1);
  
  	/* Just print it out for now. We should reserve it after more debugging */
  	dev_info(&dev->dev, "%s PIO at %04x-%04x
  ", name, base, base+size-1);
  }
  
  static void quirk_ich6_lpc(struct pci_dev *dev)
  {
  	/* Shared ACPI/GPIO decode with all ICH6+ */
  	ich6_lpc_acpi_gpio(dev);
  
  	/* ICH6-specific generic IO decode */
  	ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
  	ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
  
  static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
  {
  	u32 val;
  	u32 mask, base;
  
  	pci_read_config_dword(dev, reg, &val);
  
  	/* Enabled? */
  	if (!(val & 1))
  		return;
  
  	/*
  	 * IO base in bits 15:2, mask in bits 23:18, both
  	 * are dword-based
  	 */
  	base = val & 0xfffc;
  	mask = (val >> 16) & 0xfc;
  	mask |= 3;
  
  	/* Just print it out for now. We should reserve it after more debugging */
  	dev_info(&dev->dev, "%s PIO at %04x (mask %04x)
  ", name, base, mask);
  }
  
  /* ICH7-10 has the same common LPC generic IO decode registers */
  static void quirk_ich7_lpc(struct pci_dev *dev)
  {
  	/* We share the common ACPI/GPIO decode with ICH6 */
  	ich6_lpc_acpi_gpio(dev);
  
  	/* And have 4 ICH7+ generic decodes */
  	ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
  	ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
  	ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
  	ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
  
  /*
   * VIA ACPI: One IO region pointed to by longword at
   *	0x48 or 0x20 (256 bytes of ACPI registers)
   */
  static void quirk_vt82c586_acpi(struct pci_dev *dev)
  {
  	if (dev->revision & 0x10)
  		quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
  				"vt82c586 ACPI");
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_3,	quirk_vt82c586_acpi);
  
  /*
   * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
   *	0x48 (256 bytes of ACPI registers)
   *	0x70 (128 bytes of hardware monitoring register)
   *	0x90 (16 bytes of SMB registers)
   */
  static void quirk_vt82c686_acpi(struct pci_dev *dev)
  {
  	quirk_vt82c586_acpi(dev);
  
  	quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
  				 "vt82c686 HW-mon");
  
  	quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686_4,	quirk_vt82c686_acpi);
  
  /*
   * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
   *	0x88 (128 bytes of power management registers)
   *	0xd0 (16 bytes of SMB registers)
   */
  static void quirk_vt8235_acpi(struct pci_dev *dev)
  {
  	quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
  	quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8235,	quirk_vt8235_acpi);
  
  /*
   * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back:
   *	Disable fast back-to-back on the secondary bus segment
   */
  static void quirk_xio2000a(struct pci_dev *dev)
  {
  	struct pci_dev *pdev;
  	u16 command;
  
  	dev_warn(&dev->dev, "TI XIO2000a quirk detected; "
  		"secondary bus fast back-to-back transfers disabled
  ");
  	list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
  		pci_read_config_word(pdev, PCI_COMMAND, &command);
  		if (command & PCI_COMMAND_FAST_BACK)
  			pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
  			quirk_xio2000a);
  
  #ifdef CONFIG_X86_IO_APIC
  
  #include <asm/io_apic.h>
  
  /*
   * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
   * devices to the external APIC.
   *
   * TODO: When we have device-specific interrupt routers,
   * this code will go away from quirks.
   */
  static void quirk_via_ioapic(struct pci_dev *dev)
  {
  	u8 tmp;
  
  	if (nr_ioapics < 1)
  		tmp = 0;    /* nothing routed to external APIC */
  	else
  		tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
  
  	dev_info(&dev->dev, "%sbling VIA external APIC routing
  ",
  	       tmp == 0 ? "Disa" : "Ena");
  
  	/* Offset 0x58: External APIC IRQ output control */
  	pci_write_config_byte (dev, 0x58, tmp);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686,	quirk_via_ioapic);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686,	quirk_via_ioapic);
  
  /*
   * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
   * This leads to doubled level interrupt rates.
   * Set this bit to get rid of cycle wastage.
   * Otherwise uncritical.
   */
  static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
  {
  	u8 misc_control2;
  #define BYPASS_APIC_DEASSERT 8
  
  	pci_read_config_byte(dev, 0x5B, &misc_control2);
  	if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
  		dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message
  ");
  		pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237,		quirk_via_vt8237_bypass_apic_deassert);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237,		quirk_via_vt8237_bypass_apic_deassert);
  
  /*
   * The AMD io apic can hang the box when an apic irq is masked.
   * We check all revs >= B0 (yet not in the pre production!) as the bug
   * is currently marked NoFix
   *
   * We have multiple reports of hangs with this chipset that went away with
   * noapic specified. For the moment we assume it's the erratum. We may be wrong
   * of course. However the advice is demonstrably good even if so..
   */
  static void quirk_amd_ioapic(struct pci_dev *dev)
  {
  	if (dev->revision >= 0x02) {
  		dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try
  ");
  		dev_warn(&dev->dev, "        : booting with the \"noapic\" option
  ");
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_VIPER_7410,	quirk_amd_ioapic);
  
  static void quirk_ioapic_rmw(struct pci_dev *dev)
  {
  	if (dev->devfn == 0 && dev->bus->number == 0)
  		sis_apic_bug = 1;
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,	PCI_ANY_ID,			quirk_ioapic_rmw);
  #endif /* CONFIG_X86_IO_APIC */
  
  /*
   * Some settings of MMRBC can lead to data corruption so block changes.
   * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
   */
  static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
  {
  	if (dev->subordinate && dev->revision <= 0x12) {
  		dev_info(&dev->dev, "AMD8131 rev %x detected; "
  			"disabling PCI-X MMRBC
  ", dev->revision);
  		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
  
  /*
   * FIXME: it is questionable that quirk_via_acpi
   * is needed.  It shows up as an ISA bridge, and does not
   * support the PCI_INTERRUPT_LINE register at all.  Therefore
   * it seems like setting the pci_dev's 'irq' to the
   * value of the ACPI SCI interrupt is only done for convenience.
   *	-jgarzik
   */
  static void quirk_via_acpi(struct pci_dev *d)
  {
  	/*
  	 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
  	 */
  	u8 irq;
  	pci_read_config_byte(d, 0x42, &irq);
  	irq &= 0xf;
  	if (irq && (irq != 2))
  		d->irq = irq;
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_3,	quirk_via_acpi);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686_4,	quirk_via_acpi);
  
  
  /*
   *	VIA bridges which have VLink
   */
  
  static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
  
  static void quirk_via_bridge(struct pci_dev *dev)
  {
  	/* See what bridge we have and find the device ranges */
  	switch (dev->device) {
  	case PCI_DEVICE_ID_VIA_82C686:
  		/* The VT82C686 is special, it attaches to PCI and can have
  		   any device number. All its subdevices are functions of
  		   that single device. */
  		via_vlink_dev_lo = PCI_SLOT(dev->devfn);
  		via_vlink_dev_hi = PCI_SLOT(dev->devfn);
  		break;
  	case PCI_DEVICE_ID_VIA_8237:
  	case PCI_DEVICE_ID_VIA_8237A:
  		via_vlink_dev_lo = 15;
  		break;
  	case PCI_DEVICE_ID_VIA_8235:
  		via_vlink_dev_lo = 16;
  		break;
  	case PCI_DEVICE_ID_VIA_8231:
  	case PCI_DEVICE_ID_VIA_8233_0:
  	case PCI_DEVICE_ID_VIA_8233A:
  	case PCI_DEVICE_ID_VIA_8233C_0:
  		via_vlink_dev_lo = 17;
  		break;
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686,	quirk_via_bridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8231,		quirk_via_bridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8233_0,	quirk_via_bridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8233A,	quirk_via_bridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8233C_0,	quirk_via_bridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8235,		quirk_via_bridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237,		quirk_via_bridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237A,	quirk_via_bridge);
  
  /**
   *	quirk_via_vlink		-	VIA VLink IRQ number update
   *	@dev: PCI device
   *
   *	If the device we are dealing with is on a PIC IRQ we need to
   *	ensure that the IRQ line register which usually is not relevant
   *	for PCI cards, is actually written so that interrupts get sent
   *	to the right place.
   *	We only do this on systems where a VIA south bridge was detected,
   *	and only for VIA devices on the motherboard (see quirk_via_bridge
   *	above).
   */
  
  static void quirk_via_vlink(struct pci_dev *dev)
  {
  	u8 irq, new_irq;
  
  	/* Check if we have VLink at all */
  	if (via_vlink_dev_lo == -1)
  		return;
  
  	new_irq = dev->irq;
  
  	/* Don't quirk interrupts outside the legacy IRQ range */
  	if (!new_irq || new_irq > 15)
  		return;
  
  	/* Internal device ? */
  	if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
  	    PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
  		return;
  
  	/* This is an internal VLink device on a PIC interrupt. The BIOS
  	   ought to have set this but may not have, so we redo it */
  
  	pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
  	if (new_irq != irq) {
  		dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d
  ",
  			irq, new_irq);
  		udelay(15);	/* unknown if delay really needed */
  		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
  	}
  }
  DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
  
  /*
   * VIA VT82C598 has its device ID settable and many BIOSes
   * set it to the ID of VT82C597 for backward compatibility.
   * We need to switch it off to be able to recognize the real
   * type of the chip.
   */
  static void quirk_vt82c598_id(struct pci_dev *dev)
  {
  	pci_write_config_byte(dev, 0xfc, 0);
  	pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C597_0,	quirk_vt82c598_id);
  
  /*
   * CardBus controllers have a legacy base address that enables them
   * to respond as i82365 pcmcia controllers.  We don't want them to
   * do this even if the Linux CardBus driver is not loaded, because
   * the Linux i82365 driver does not (and should not) handle CardBus.
   */
  static void quirk_cardbus_legacy(struct pci_dev *dev)
  {
  	pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
  }
  DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
  			PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
  DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
  			PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
  
  /*
   * Following the PCI ordering rules is optional on the AMD762. I'm not
   * sure what the designers were smoking but let's not inhale...
   *
   * To be fair to AMD, it follows the spec by default, its BIOS people
   * who turn it off!
   */
  static void quirk_amd_ordering(struct pci_dev *dev)
  {
  	u32 pcic;
  	pci_read_config_dword(dev, 0x4C, &pcic);
  	if ((pcic&6)!=6) {
  		pcic |= 6;
  		dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error
  ");
  		pci_write_config_dword(dev, 0x4C, pcic);
  		pci_read_config_dword(dev, 0x84, &pcic);
  		pcic |= (1<<23);	/* Required in this mode */
  		pci_write_config_dword(dev, 0x84, pcic);
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
  
  /*
   *	DreamWorks provided workaround for Dunord I-3000 problem
   *
   *	This card decodes and responds to addresses not apparently
   *	assigned to it. We force a larger allocation to ensure that
   *	nothing gets put too close to it.
   */
  static void quirk_dunord(struct pci_dev *dev)
  {
  	struct resource *r = &dev->resource [1];
  	r->start = 0;
  	r->end = 0xffffff;
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD,	PCI_DEVICE_ID_DUNORD_I3000,	quirk_dunord);
  
  /*
   * i82380FB mobile docking controller: its PCI-to-PCI bridge
   * is subtractive decoding (transparent), and does indicate this
   * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
   * instead of 0x01.
   */
  static void quirk_transparent_bridge(struct pci_dev *dev)
  {
  	dev->transparent = 1;
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82380FB,	quirk_transparent_bridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA,	0x605,	quirk_transparent_bridge);
  
  /*
   * Common misconfiguration of the MediaGX/Geode PCI master that will
   * reduce PCI bandwidth from 70MB/s to 25MB/s.  See the GXM/GXLV/GX1
   * datasheets found at http://www.national.com/analog for info on what
   * these bits do.  <christer@weinigel.se>
   */
  static void quirk_mediagx_master(struct pci_dev *dev)
  {
  	u8 reg;
  	pci_read_config_byte(dev, 0x41, &reg);
  	if (reg & 2) {
  		reg &= ~2;
  		dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)
  ", reg);
                  pci_write_config_byte(dev, 0x41, reg);
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX,	PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX,	PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
  
  /*
   *	Ensure C0 rev restreaming is off. This is normally done by
   *	the BIOS but in the odd case it is not the results are corruption
   *	hence the presence of a Linux check
   */
  static void quirk_disable_pxb(struct pci_dev *pdev)
  {
  	u16 config;
  
  	if (pdev->revision != 0x04)		/* Only C0 requires this */
  		return;
  	pci_read_config_word(pdev, 0x40, &config);
  	if (config & (1<<6)) {
  		config &= ~(1<<6);
  		pci_write_config_word(pdev, 0x40, config);
  		dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming
  ");
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82454NX,	quirk_disable_pxb);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82454NX,	quirk_disable_pxb);
  
  static void quirk_amd_ide_mode(struct pci_dev *pdev)
  {
  	/* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
  	u8 tmp;
  
  	pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
  	if (tmp == 0x01) {
  		pci_read_config_byte(pdev, 0x40, &tmp);
  		pci_write_config_byte(pdev, 0x40, tmp|1);
  		pci_write_config_byte(pdev, 0x9, 1);
  		pci_write_config_byte(pdev, 0xa, 6);
  		pci_write_config_byte(pdev, 0x40, tmp);
  
  		pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
  		dev_info(&pdev->dev, "set SATA to AHCI mode
  ");
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
  
  /*
   *	Serverworks CSB5 IDE does not fully support native mode
   */
  static void quirk_svwks_csb5ide(struct pci_dev *pdev)
  {
  	u8 prog;
  	pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
  	if (prog & 5) {
  		prog &= ~5;
  		pdev->class &= ~5;
  		pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
  		/* PCI layer will sort out resources */
  	}
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
  
  /*
   *	Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
   */
  static void quirk_ide_samemode(struct pci_dev *pdev)
  {
  	u8 prog;
  
  	pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
  
  	if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
  		dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode
  ");
  		prog &= ~5;
  		pdev->class &= ~5;
  		pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
  	}
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
  
  /*
   * Some ATA devices break if put into D3
   */
  
  static void quirk_no_ata_d3(struct pci_dev *pdev)
  {
  	pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
  }
  /* Quirk the legacy ATA devices only. The AHCI ones are ok */
  DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
  				PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
  DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
  				PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
  /* ALi loses some register settings that we cannot then restore */
  DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
  				PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
  /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
     occur when mode detecting */
  DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
  				PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
  
  /* This was originally an Alpha specific thing, but it really fits here.
   * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
   */
  static void quirk_eisa_bridge(struct pci_dev *dev)
  {
  	dev->class = PCI_CLASS_BRIDGE_EISA << 8;
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82375,	quirk_eisa_bridge);
  
  
  /*
   * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
   * is not activated. The myth is that Asus said that they do not want the
   * users to be irritated by just another PCI Device in the Win98 device
   * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
   * package 2.7.0 for details)
   *
   * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
   * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
   * becomes necessary to do this tweak in two steps -- the chosen trigger
   * is either the Host bridge (preferred) or on-board VGA controller.
   *
   * Note that we used to unhide the SMBus that way on Toshiba laptops
   * (Satellite A40 and Tecra M2) but then found that the thermal management
   * was done by SMM code, which could cause unsynchronized concurrent
   * accesses to the SMBus registers, with potentially bad effects. Thus you
   * should be very careful when adding new entries: if SMM is accessing the
   * Intel SMBus, this is a very good reason to leave it hidden.
   *
   * Likewise, many recent laptops use ACPI for thermal management. If the
   * ACPI DSDT code accesses the SMBus, then Linux should not access it
   * natively, and keeping the SMBus hidden is the right thing to do. If you
   * are about to add an entry in the table below, please first disassemble
   * the DSDT and double-check that there is no code accessing the SMBus.
   */
  static int asus_hides_smbus;
  
  static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
  {
  	if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
  		if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
  			switch(dev->subsystem_device) {
  			case 0x8025: /* P4B-LX */
  			case 0x8070: /* P4B */
  			case 0x8088: /* P4B533 */
  			case 0x1626: /* L3C notebook */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
  			switch(dev->subsystem_device) {
  			case 0x80b1: /* P4GE-V */
  			case 0x80b2: /* P4PE */
  			case 0x8093: /* P4B533-V */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
  			switch(dev->subsystem_device) {
  			case 0x8030: /* P4T533 */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
  			switch (dev->subsystem_device) {
  			case 0x8070: /* P4G8X Deluxe */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
  			switch (dev->subsystem_device) {
  			case 0x80c9: /* PU-DLS */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
  			switch (dev->subsystem_device) {
  			case 0x1751: /* M2N notebook */
  			case 0x1821: /* M5N notebook */
  			case 0x1897: /* A6L notebook */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
  			switch (dev->subsystem_device) {
  			case 0x184b: /* W1N notebook */
  			case 0x186a: /* M6Ne notebook */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
  			switch (dev->subsystem_device) {
  			case 0x80f2: /* P4P800-X */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
  			switch (dev->subsystem_device) {
  			case 0x1882: /* M6V notebook */
  			case 0x1977: /* A6VA notebook */
  				asus_hides_smbus = 1;
  			}
  	} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
  		if (dev->device ==  PCI_DEVICE_ID_INTEL_82855PM_HB)
  			switch(dev->subsystem_device) {
  			case 0x088C: /* HP Compaq nc8000 */
  			case 0x0890: /* HP Compaq nc6000 */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
  			switch (dev->subsystem_device) {
  			case 0x12bc: /* HP D330L */
  			case 0x12bd: /* HP D530 */
  			case 0x006a: /* HP Compaq nx9500 */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
  			switch (dev->subsystem_device) {
  			case 0x12bf: /* HP xw4100 */
  				asus_hides_smbus = 1;
  			}
         } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
                 if (dev->device ==  PCI_DEVICE_ID_INTEL_82855PM_HB)
                         switch(dev->subsystem_device) {
                         case 0xC00C: /* Samsung P35 notebook */
                                 asus_hides_smbus = 1;
                         }
  	} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
  		if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
  			switch(dev->subsystem_device) {
  			case 0x0058: /* Compaq Evo N620c */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
  			switch(dev->subsystem_device) {
  			case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
  				/* Motherboard doesn't have Host bridge
  				 * subvendor/subdevice IDs, therefore checking
  				 * its on-board VGA controller */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
  			switch(dev->subsystem_device) {
  			case 0x00b8: /* Compaq Evo D510 CMT */
  			case 0x00b9: /* Compaq Evo D510 SFF */
  			case 0x00ba: /* Compaq Evo D510 USDT */
  				/* Motherboard doesn't have Host bridge
  				 * subvendor/subdevice IDs and on-board VGA
  				 * controller is disabled if an AGP card is
  				 * inserted, therefore checking USB UHCI
  				 * Controller #1 */
  				asus_hides_smbus = 1;
  			}
  		else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
  			switch (dev->subsystem_device) {
  			case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
  				/* Motherboard doesn't have host bridge
  				 * subvendor/subdevice IDs, therefore checking
  				 * its on-board VGA controller */
  				asus_hides_smbus = 1;
  			}
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82845_HB,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82845G_HB,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82850_HB,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82865_HB,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82875_HB,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_7205_0,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_E7501_MCH,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82855PM_HB,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82855GM_HB,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
  
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82810_IG3,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_2,	asus_hides_smbus_hostbridge);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82815_CGC,	asus_hides_smbus_hostbridge);
  
  static void asus_hides_smbus_lpc(struct pci_dev *dev)
  {
  	u16 val;
  
  	if (likely(!asus_hides_smbus))
  		return;
  
  	pci_read_config_word(dev, 0xF2, &val);
  	if (val & 0x8) {
  		pci_write_config_word(dev, 0xF2, val & (~0x8));
  		pci_read_config_word(dev, 0xF2, &val);
  		if (val & 0x8)
  			dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x
  ", val);
  		else
  			dev_info(&dev->dev, "Enabled i801 SMBus device
  ");
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801AA_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801BA_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801CA_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801CA_12,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_12,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801EB_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801AA_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801BA_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801CA_0,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801CA_12,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_12,	asus_hides_smbus_lpc);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801EB_0,	asus_hides_smbus_lpc);
  
  /* It appears we just have one such device. If not, we have a warning */
  static void __iomem *asus_rcba_base;
  static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
  {
  	u32 rcba;
  
  	if (likely(!asus_hides_smbus))
  		return;
  	WARN_ON(asus_rcba_base);
  
  	pci_read_config_dword(dev, 0xF0, &rcba);
  	/* use bits 31:14, 16 kB aligned */
  	asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
  	if (asus_rcba_base == NULL)
  		return;
  }
  
  static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
  {
  	u32 val;
  
  	if (likely(!asus_hides_smbus || !asus_rcba_base))
  		return;
  	/* read the Function Disable register, dword mode only */
  	val = readl(asus_rcba_base + 0x3418);
  	writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
  }
  
  static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
  {
  	if (likely(!asus_hides_smbus || !asus_rcba_base))
  		return;
  	iounmap(asus_rcba_base);
  	asus_rcba_base = NULL;
  	dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device
  ");
  }
  
  static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
  {
  	asus_hides_smbus_lpc_ich6_suspend(dev);
  	asus_hides_smbus_lpc_ich6_resume_early(dev);
  	asus_hides_smbus_lpc_ich6_resume(dev);
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1,	asus_hides_smbus_lpc_ich6);
  DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1,	asus_hides_smbus_lpc_ich6_suspend);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1,	asus_hides_smbus_lpc_ich6_resume);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1,	asus_hides_smbus_lpc_ich6_resume_early);
  
  /*
   * SiS 96x south bridge: BIOS typically hides SMBus device...
   */
  static void quirk_sis_96x_smbus(struct pci_dev *dev)
  {
  	u8 val = 0;
  	pci_read_config_byte(dev, 0x77, &val);
  	if (val & 0x10) {
  		dev_info(&dev->dev, "Enabling SiS 96x SMBus
  ");
  		pci_write_config_byte(dev, 0x77, val & ~0x10);
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_961,		quirk_sis_96x_smbus);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_962,		quirk_sis_96x_smbus);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_963,		quirk_sis_96x_smbus);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_LPC,		quirk_sis_96x_smbus);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_961,		quirk_sis_96x_smbus);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_962,		quirk_sis_96x_smbus);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_963,		quirk_sis_96x_smbus);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_LPC,		quirk_sis_96x_smbus);
  
  /*
   * ... This is further complicated by the fact that some SiS96x south
   * bridges pretend to be 85C503/5513 instead.  In that case see if we
   * spotted a compatible north bridge to make sure.
   * (pci_find_device doesn't work yet)
   *
   * We can also enable the sis96x bit in the discovery register..
   */
  #define SIS_DETECT_REGISTER 0x40
  
  static void quirk_sis_503(struct pci_dev *dev)
  {
  	u8 reg;
  	u16 devid;
  
  	pci_read_config_byte(dev, SIS_DETECT_REGISTER, &reg);
  	pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
  	pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
  	if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
  		pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
  		return;
  	}
  
  	/*
  	 * Ok, it now shows up as a 96x.. run the 96x quirk by
  	 * hand in case it has already been processed.
  	 * (depends on link order, which is apparently not guaranteed)
  	 */
  	dev->device = devid;
  	quirk_sis_96x_smbus(dev);
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_503,		quirk_sis_503);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_503,		quirk_sis_503);
  
  
  /*
   * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
   * and MC97 modem controller are disabled when a second PCI soundcard is
   * present. This patch, tweaking the VT8237 ISA bridge, enables them.
   * -- bjd
   */
  static void asus_hides_ac97_lpc(struct pci_dev *dev)
  {
  	u8 val;
  	int asus_hides_ac97 = 0;
  
  	if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
  		if (dev->device == PCI_DEVICE_ID_VIA_8237)
  			asus_hides_ac97 = 1;
  	}
  
  	if (!asus_hides_ac97)
  		return;
  
  	pci_read_config_byte(dev, 0x50, &val);
  	if (val & 0xc0) {
  		pci_write_config_byte(dev, 0x50, val & (~0xc0));
  		pci_read_config_byte(dev, 0x50, &val);
  		if (val & 0xc0)
  			dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x
  ", val);
  		else
  			dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices
  ");
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
  
  #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
  
  /*
   *	If we are using libata we can drive this chip properly but must
   *	do this early on to make the additional device appear during
   *	the PCI scanning.
   */
  static void quirk_jmicron_ata(struct pci_dev *pdev)
  {
  	u32 conf1, conf5, class;
  	u8 hdr;
  
  	/* Only poke fn 0 */
  	if (PCI_FUNC(pdev->devfn))
  		return;
  
  	pci_read_config_dword(pdev, 0x40, &conf1);
  	pci_read_config_dword(pdev, 0x80, &conf5);
  
  	conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
  	conf5 &= ~(1 << 24);  /* Clear bit 24 */
  
  	switch (pdev->device) {
  	case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
  	case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
  	case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
  		/* The controller should be in single function ahci mode */
  		conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
  		break;
  
  	case PCI_DEVICE_ID_JMICRON_JMB365:
  	case PCI_DEVICE_ID_JMICRON_JMB366:
  		/* Redirect IDE second PATA port to the right spot */
  		conf5 |= (1 << 24);
  		/* Fall through */
  	case PCI_DEVICE_ID_JMICRON_JMB361:
  	case PCI_DEVICE_ID_JMICRON_JMB363:
  	case PCI_DEVICE_ID_JMICRON_JMB369:
  		/* Enable dual function mode, AHCI on fn 0, IDE fn1 */
  		/* Set the class codes correctly and then direct IDE 0 */
  		conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
  		break;
  
  	case PCI_DEVICE_ID_JMICRON_JMB368:
  		/* The controller should be in single function IDE mode */
  		conf1 |= 0x00C00000; /* Set 22, 23 */
  		break;
  	}
  
  	pci_write_config_dword(pdev, 0x40, conf1);
  	pci_write_config_dword(pdev, 0x80, conf5);
  
  	/* Update pdev accordingly */
  	pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
  	pdev->hdr_type = hdr & 0x7f;
  	pdev->multifunction = !!(hdr & 0x80);
  
  	pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
  	pdev->class = class >> 8;
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
  
  #endif
  
  #ifdef CONFIG_X86_IO_APIC
  static void quirk_alder_ioapic(struct pci_dev *pdev)
  {
  	int i;
  
  	if ((pdev->class >> 8) != 0xff00)
  		return;
  
  	/* the first BAR is the location of the IO APIC...we must
  	 * not touch this (and it's already covered by the fixmap), so
  	 * forcibly insert it into the resource tree */
  	if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
  		insert_resource(&iomem_resource, &pdev->resource[0]);
  
  	/* The next five BARs all seem to be rubbish, so just clean
  	 * them out */
  	for (i=1; i < 6; i++) {
  		memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
  	}
  
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_EESSC,	quirk_alder_ioapic);
  #endif
  
  static void quirk_pcie_mch(struct pci_dev *pdev)
  {
  	pci_msi_off(pdev);
  	pdev->no_msi = 1;
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_E7520_MCH,	quirk_pcie_mch);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_E7320_MCH,	quirk_pcie_mch);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_E7525_MCH,	quirk_pcie_mch);
  
  
  /*
   * It's possible for the MSI to get corrupted if shpc and acpi
   * are used together on certain PXH-based systems.
   */
  static void quirk_pcie_pxh(struct pci_dev *dev)
  {
  	pci_msi_off(dev);
  	dev->no_msi = 1;
  	dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled
  ");
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHD_0,	quirk_pcie_pxh);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHD_1,	quirk_pcie_pxh);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_0,	quirk_pcie_pxh);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_1,	quirk_pcie_pxh);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHV,	quirk_pcie_pxh);
  
  /*
   * Some Intel PCI Express chipsets have trouble with downstream
   * device power management.
   */
  static void quirk_intel_pcie_pm(struct pci_dev * dev)
  {
  	pci_pm_d3_delay = 120;
  	dev->no_d1d2 = 1;
  }
  
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e2, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e3, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e4, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e5, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e6, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e7, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25f7, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25f8, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25f9, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25fa, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2601, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2602, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2603, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2604, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2605, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2606, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2607, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2608, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2609, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x260a, quirk_intel_pcie_pm);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x260b, quirk_intel_pcie_pm);
  
  #ifdef CONFIG_X86_IO_APIC
  /*
   * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
   * remap the original interrupt in the linux kernel to the boot interrupt, so
   * that a PCI device's interrupt handler is installed on the boot interrupt
   * line instead.
   */
  static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
  {
  	if (noioapicquirk || noioapicreroute)
  		return;
  
  	dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
  	dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]
  ",
  		 dev->vendor, dev->device);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80333_0,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80333_1,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ESB2_0,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_0,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_1,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHV,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80332_0,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80332_1,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80333_0,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80333_1,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ESB2_0,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_0,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_1,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHV,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80332_0,	quirk_reroute_to_boot_interrupts_intel);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80332_1,	quirk_reroute_to_boot_interrupts_intel);
  
  /*
   * On some chipsets we can disable the generation of legacy INTx boot
   * interrupts.
   */
  
  /*
   * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
   * 300641-004US, section 5.7.3.
   */
  #define INTEL_6300_IOAPIC_ABAR		0x40
  #define INTEL_6300_DISABLE_BOOT_IRQ	(1<<14)
  
  static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
  {
  	u16 pci_config_word;
  
  	if (noioapicquirk)
  		return;
  
  	pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
  	pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
  	pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
  
  	dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]
  ",
  		 dev->vendor, dev->device);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ESB_10,	quirk_disable_intel_boot_interrupt);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ESB_10,	quirk_disable_intel_boot_interrupt);
  
  /*
   * disable boot interrupts on HT-1000
   */
  #define BC_HT1000_FEATURE_REG		0x64
  #define BC_HT1000_PIC_REGS_ENABLE	(1<<0)
  #define BC_HT1000_MAP_IDX		0xC00
  #define BC_HT1000_MAP_DATA		0xC01
  
  static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
  {
  	u32 pci_config_dword;
  	u8 irq;
  
  	if (noioapicquirk)
  		return;
  
  	pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
  	pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
  			BC_HT1000_PIC_REGS_ENABLE);
  
  	for (irq = 0x10; irq < 0x10 + 32; irq++) {
  		outb(irq, BC_HT1000_MAP_IDX);
  		outb(0x00, BC_HT1000_MAP_DATA);
  	}
  
  	pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
  
  	dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]
  ",
  		 dev->vendor, dev->device);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_HT1000SB,	quirk_disable_broadcom_boot_interrupt);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_HT1000SB,	quirk_disable_broadcom_boot_interrupt);
  
  /*
   * disable boot interrupts on AMD and ATI chipsets
   */
  /*
   * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
   * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
   * (due to an erratum).
   */
  #define AMD_813X_MISC			0x40
  #define AMD_813X_NOIOAMODE		(1<<0)
  #define AMD_813X_REV_B1			0x12
  #define AMD_813X_REV_B2			0x13
  
  static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
  {
  	u32 pci_config_dword;
  
  	if (noioapicquirk)
  		return;
  	if ((dev->revision == AMD_813X_REV_B1) ||
  	    (dev->revision == AMD_813X_REV_B2))
  		return;
  
  	pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
  	pci_config_dword &= ~AMD_813X_NOIOAMODE;
  	pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
  
  	dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]
  ",
  		 dev->vendor, dev->device);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8131_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8131_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8132_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8132_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
  
  #define AMD_8111_PCI_IRQ_ROUTING	0x56
  
  static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
  {
  	u16 pci_config_word;
  
  	if (noioapicquirk)
  		return;
  
  	pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
  	if (!pci_config_word) {
  		dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] "
  			 "already disabled
  ", dev->vendor, dev->device);
  		return;
  	}
  	pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
  	dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]
  ",
  		 dev->vendor, dev->device);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8111_SMBUS,	quirk_disable_amd_8111_boot_interrupt);
  DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8111_SMBUS,	quirk_disable_amd_8111_boot_interrupt);
  #endif /* CONFIG_X86_IO_APIC */
  
  /*
   * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
   * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
   * Re-allocate the region if needed...
   */
  static void quirk_tc86c001_ide(struct pci_dev *dev)
  {
  	struct resource *r = &dev->resource[0];
  
  	if (r->start & 0x8) {
  		r->start = 0;
  		r->end = 0xf;
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
  			 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
  			 quirk_tc86c001_ide);
  
  /*
   * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the
   * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
   * being read correctly if bit 7 of the base address is set.
   * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
   * Re-allocate the regions to a 256-byte boundary if necessary.
   */
  static void quirk_plx_pci9050(struct pci_dev *dev)
  {
  	unsigned int bar;
  
  	/* Fixed in revision 2 (PCI 9052). */
  	if (dev->revision >= 2)
  		return;
  	for (bar = 0; bar <= 1; bar++)
  		if (pci_resource_len(dev, bar) == 0x80 &&
  		    (pci_resource_start(dev, bar) & 0x80)) {
  			struct resource *r = &dev->resource[bar];
  			dev_info(&dev->dev,
  				 "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug
  ",
  				 bar);
  			r->start = 0;
  			r->end = 0xff;
  		}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
  			 quirk_plx_pci9050);
  /*
   * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
   * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
   * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
   * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
   *
   * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
   * driver.
   */
  DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
  DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
  
  static void quirk_netmos(struct pci_dev *dev)
  {
  	unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
  	unsigned int num_serial = dev->subsystem_device & 0xf;
  
  	/*
  	 * These Netmos parts are multiport serial devices with optional
  	 * parallel ports.  Even when parallel ports are present, they
  	 * are identified as class SERIAL, which means the serial driver
  	 * will claim them.  To prevent this, mark them as class OTHER.
  	 * These combo devices should be claimed by parport_serial.
  	 *
  	 * The subdevice ID is of the form 0x00PS, where <P> is the number
  	 * of parallel ports and <S> is the number of serial ports.
  	 */
  	switch (dev->device) {
  	case PCI_DEVICE_ID_NETMOS_9835:
  		/* Well, this rule doesn't hold for the following 9835 device */
  		if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
  				dev->subsystem_device == 0x0299)
  			return;
  	case PCI_DEVICE_ID_NETMOS_9735:
  	case PCI_DEVICE_ID_NETMOS_9745:
  	case PCI_DEVICE_ID_NETMOS_9845:
  	case PCI_DEVICE_ID_NETMOS_9855:
  		if (num_parallel) {
  			dev_info(&dev->dev, "Netmos %04x (%u parallel, "
  				"%u serial); changing class SERIAL to OTHER "
  				"(use parport_serial)
  ",
  				dev->device, num_parallel, num_serial);
  			dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
  			    (dev->class & 0xff);
  		}
  	}
  }
  DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
  			 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
  
  static void quirk_e100_interrupt(struct pci_dev *dev)
  {
  	u16 command, pmcsr;
  	u8 __iomem *csr;
  	u8 cmd_hi;
  
  	switch (dev->device) {
  	/* PCI IDs taken from drivers/net/e100.c */
  	case 0x1029:
  	case 0x1030 ... 0x1034:
  	case 0x1038 ... 0x103E:
  	case 0x1050 ... 0x1057:
  	case 0x1059:
  	case 0x1064 ... 0x106B:
  	case 0x1091 ... 0x1095:
  	case 0x1209:
  	case 0x1229:
  	case 0x2449:
  	case 0x2459:
  	case 0x245D:
  	case 0x27DC:
  		break;
  	default:
  		return;
  	}
  
  	/*
  	 * Some firmware hands off the e100 with interrupts enabled,
  	 * which can cause a flood of interrupts if packets are
  	 * received before the driver attaches to the device.  So
  	 * disable all e100 interrupts here.  The driver will
  	 * re-enable them when it's ready.
  	 */
  	pci_read_config_word(dev, PCI_COMMAND, &command);
  
  	if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
  		return;
  
  	/*
  	 * Check that the device is in the D0 power state. If it's not,
  	 * there is no point to look any further.
  	 */
  	if (dev->pm_cap) {
  		pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
  		if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
  			return;
  	}
  
  	/* Convert from PCI bus to resource space.  */
  	csr = ioremap(pci_resource_start(dev, 0), 8);
  	if (!csr) {
  		dev_warn(&dev->dev, "Can't map e100 registers
  ");
  		return;
  	}
  
  	cmd_hi = readb(csr + 3);
  	if (cmd_hi == 0) {
  		dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; "
  			"disabling
  ");
  		writeb(1, csr + 3);
  	}
  
  	iounmap(csr);
  }
  DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
  			PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
  
  /*
   * The 82575 and 82598 may experience data corruption issues when transitioning
   * out of L0S.  To prevent this we need to disable L0S on the pci-e link
   */
  static void quirk_disable_aspm_l0s(struct pci_dev *dev)
  {
  	dev_info(&dev->dev, "Disabling L0s
  ");
  	pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
  
  static void fixup_rev1_53c810(struct pci_dev *dev)
  {
  	/* rev 1 ncr53c810 chips don't set the class at all which means
  	 * they don't get their resources remapped. Fix that here.
  	 */
  
  	if (dev->class == PCI_CLASS_NOT_DEFINED) {
  		dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class
  ");
  		dev->class = PCI_CLASS_STORAGE_SCSI;
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
  
  /* Enable 1k I/O space granularity on the Intel P64H2 */
  static void quirk_p64h2_1k_io(struct pci_dev *dev)
  {
  	u16 en1k;
  
  	pci_read_config_word(dev, 0x40, &en1k);
  
  	if (en1k & 0x200) {
  		dev_info(&dev->dev, "Enable I/O Space to 1KB granularity
  ");
  		dev->io_window_1k = 1;
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	0x1460,		quirk_p64h2_1k_io);
  
  /* Under some circumstances, AER is not linked with extended capabilities.
   * Force it to be linked by setting the corresponding control bit in the
   * config space.
   */
  static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
  {
  	uint8_t b;
  	if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
  		if (!(b & 0x20)) {
  			pci_write_config_byte(dev, 0xf41, b | 0x20);
  			dev_info(&dev->dev,
  			       "Linking AER extended capability
  ");
  		}
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA,  PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
  			quirk_nvidia_ck804_pcie_aer_ext_cap);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA,  PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
  			quirk_nvidia_ck804_pcie_aer_ext_cap);
  
  static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
  {
  	/*
  	 * Disable PCI Bus Parking and PCI Master read caching on CX700
  	 * which causes unspecified timing errors with a VT6212L on the PCI
  	 * bus leading to USB2.0 packet loss.
  	 *
  	 * This quirk is only enabled if a second (on the external PCI bus)
  	 * VT6212L is found -- the CX700 core itself also contains a USB
  	 * host controller with the same PCI ID as the VT6212L.
  	 */
  
  	/* Count VT6212L instances */
  	struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
  		PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
  	uint8_t b;
  
  	/* p should contain the first (internal) VT6212L -- see if we have
  	   an external one by searching again */
  	p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
  	if (!p)
  		return;
  	pci_dev_put(p);
  
  	if (pci_read_config_byte(dev, 0x76, &b) == 0) {
  		if (b & 0x40) {
  			/* Turn off PCI Bus Parking */
  			pci_write_config_byte(dev, 0x76, b ^ 0x40);
  
  			dev_info(&dev->dev,
  				"Disabling VIA CX700 PCI parking
  ");
  		}
  	}
  
  	if (pci_read_config_byte(dev, 0x72, &b) == 0) {
  		if (b != 0) {
  			/* Turn off PCI Master read caching */
  			pci_write_config_byte(dev, 0x72, 0x0);
  
  			/* Set PCI Master Bus time-out to "1x16 PCLK" */
  			pci_write_config_byte(dev, 0x75, 0x1);
  
  			/* Disable "Read FIFO Timer" */
  			pci_write_config_byte(dev, 0x77, 0x0);
  
  			dev_info(&dev->dev,
  				"Disabling VIA CX700 PCI caching
  ");
  		}
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
  
  /*
   * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
   * VPD end tag will hang the device.  This problem was initially
   * observed when a vpd entry was created in sysfs
   * ('/sys/bus/pci/devices/<id>/vpd').   A read to this sysfs entry
   * will dump 32k of data.  Reading a full 32k will cause an access
   * beyond the VPD end tag causing the device to hang.  Once the device
   * is hung, the bnx2 driver will not be able to reset the device.
   * We believe that it is legal to read beyond the end tag and
   * therefore the solution is to limit the read/write length.
   */
  static void quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
  {
  	/*
  	 * Only disable the VPD capability for 5706, 5706S, 5708,
  	 * 5708S and 5709 rev. A
  	 */
  	if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
  	    (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
  	    (dev->device == PCI_DEVICE_ID_NX2_5708) ||
  	    (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
  	    ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
  	     (dev->revision & 0xf0) == 0x0)) {
  		if (dev->vpd)
  			dev->vpd->len = 0x80;
  	}
  }
  
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_NX2_5706,
  			quirk_brcm_570x_limit_vpd);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_NX2_5706S,
  			quirk_brcm_570x_limit_vpd);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_NX2_5708,
  			quirk_brcm_570x_limit_vpd);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_NX2_5708S,
  			quirk_brcm_570x_limit_vpd);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_NX2_5709,
  			quirk_brcm_570x_limit_vpd);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_NX2_5709S,
  			quirk_brcm_570x_limit_vpd);
  
  static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
  {
  	u32 rev;
  
  	pci_read_config_dword(dev, 0xf4, &rev);
  
  	/* Only CAP the MRRS if the device is a 5719 A0 */
  	if (rev == 0x05719000) {
  		int readrq = pcie_get_readrq(dev);
  		if (readrq > 2048)
  			pcie_set_readrq(dev, 2048);
  	}
  }
  
  DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
  			 PCI_DEVICE_ID_TIGON3_5719,
  			 quirk_brcm_5719_limit_mrrs);
  
  /* Originally in EDAC sources for i82875P:
   * Intel tells BIOS developers to hide device 6 which
   * configures the overflow device access containing
   * the DRBs - this is where we expose device 6.
   * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
   */
  static void quirk_unhide_mch_dev6(struct pci_dev *dev)
  {
  	u8 reg;
  
  	if (pci_read_config_byte(dev, 0xF4, &reg) == 0 && !(reg & 0x02)) {
  		dev_info(&dev->dev, "Enabling MCH 'Overflow' Device
  ");
  		pci_write_config_byte(dev, 0xF4, reg | 0x02);
  	}
  }
  
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
  			quirk_unhide_mch_dev6);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
  			quirk_unhide_mch_dev6);
  
  #ifdef CONFIG_TILEPRO
  /*
   * The Tilera TILEmpower tilepro platform needs to set the link speed
   * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed
   * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe
   * capability register of the PEX8624 PCIe switch. The switch
   * supports link speed auto negotiation, but falsely sets
   * the link speed to 5GT/s.
   */
  static void quirk_tile_plx_gen1(struct pci_dev *dev)
  {
  	if (tile_plx_gen1) {
  		pci_write_config_dword(dev, 0x98, 0x1);
  		mdelay(50);
  	}
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1);
  #endif /* CONFIG_TILEPRO */
  
  #ifdef CONFIG_PCI_MSI
  /* Some chipsets do not support MSI. We cannot easily rely on setting
   * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
   * some other buses controlled by the chipset even if Linux is not
   * aware of it.  Instead of setting the flag on all buses in the
   * machine, simply disable MSI globally.
   */
  static void quirk_disable_all_msi(struct pci_dev *dev)
  {
  	pci_no_msi();
  	dev_warn(&dev->dev, "MSI quirk detected; MSI disabled
  ");
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
  
  /* Disable MSI on chipsets that are known to not support it */
  static void quirk_disable_msi(struct pci_dev *dev)
  {
  	if (dev->subordinate) {
  		dev_warn(&dev->dev, "MSI quirk detected; "
  			"subordinate MSI disabled
  ");
  		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
  
  /*
   * The APC bridge device in AMD 780 family northbridges has some random
   * OEM subsystem ID in its vendor ID register (erratum 18), so instead
   * we use the possible vendor/device IDs of the host bridge for the
   * declared quirk, and search for the APC bridge by slot number.
   */
  static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
  {
  	struct pci_dev *apc_bridge;
  
  	apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
  	if (apc_bridge) {
  		if (apc_bridge->device == 0x9602)
  			quirk_disable_msi(apc_bridge);
  		pci_dev_put(apc_bridge);
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
  
  /* Go through the list of Hypertransport capabilities and
   * return 1 if a HT MSI capability is found and enabled */
  static int msi_ht_cap_enabled(struct pci_dev *dev)
  {
  	int pos, ttl = 48;
  
  	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
  	while (pos && ttl--) {
  		u8 flags;
  
  		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
  					 &flags) == 0)
  		{
  			dev_info(&dev->dev, "Found %s HT MSI Mapping
  ",
  				flags & HT_MSI_FLAGS_ENABLE ?
  				"enabled" : "disabled");
  			return (flags & HT_MSI_FLAGS_ENABLE) != 0;
  		}
  
  		pos = pci_find_next_ht_capability(dev, pos,
  						  HT_CAPTYPE_MSI_MAPPING);
  	}
  	return 0;
  }
  
  /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
  static void quirk_msi_ht_cap(struct pci_dev *dev)
  {
  	if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
  		dev_warn(&dev->dev, "MSI quirk detected; "
  			"subordinate MSI disabled
  ");
  		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
  			quirk_msi_ht_cap);
  
  /* The nVidia CK804 chipset may have 2 HT MSI mappings.
   * MSI are supported if the MSI capability set in any of these mappings.
   */
  static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
  {
  	struct pci_dev *pdev;
  
  	if (!dev->subordinate)
  		return;
  
  	/* check HT MSI cap on this chipset and the root one.
  	 * a single one having MSI is enough to be sure that MSI are supported.
  	 */
  	pdev = pci_get_slot(dev->bus, 0);
  	if (!pdev)
  		return;
  	if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
  		dev_warn(&dev->dev, "MSI quirk detected; "
  			"subordinate MSI disabled
  ");
  		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
  	}
  	pci_dev_put(pdev);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
  			quirk_nvidia_ck804_msi_ht_cap);
  
  /* Force enable MSI mapping capability on HT bridges */
  static void ht_enable_msi_mapping(struct pci_dev *dev)
  {
  	int pos, ttl = 48;
  
  	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
  	while (pos && ttl--) {
  		u8 flags;
  
  		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
  					 &flags) == 0) {
  			dev_info(&dev->dev, "Enabling HT MSI Mapping
  ");
  
  			pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
  					      flags | HT_MSI_FLAGS_ENABLE);
  		}
  		pos = pci_find_next_ht_capability(dev, pos,
  						  HT_CAPTYPE_MSI_MAPPING);
  	}
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
  			 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
  			 ht_enable_msi_mapping);
  
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
  			 ht_enable_msi_mapping);
  
  /* The P5N32-SLI motherboards from Asus have a problem with msi
   * for the MCP55 NIC. It is not yet determined whether the msi problem
   * also affects other devices. As for now, turn off msi for this device.
   */
  static void nvenet_msi_disable(struct pci_dev *dev)
  {
  	const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
  
  	if (board_name &&
  	    (strstr(board_name, "P5N32-SLI PREMIUM") ||
  	     strstr(board_name, "P5N32-E SLI"))) {
  		dev_info(&dev->dev,
  			 "Disabling msi for MCP55 NIC on P5N32-SLI
  ");
  		dev->no_msi = 1;
  	}
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
  			PCI_DEVICE_ID_NVIDIA_NVENET_15,
  			nvenet_msi_disable);
  
  /*
   * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
   * config register.  This register controls the routing of legacy
   * interrupts from devices that route through the MCP55.  If this register
   * is misprogrammed, interrupts are only sent to the BSP, unlike
   * conventional systems where the IRQ is broadcast to all online CPUs.  Not
   * having this register set properly prevents kdump from booting up
   * properly, so let's make sure that we have it set correctly.
   * Note that this is an undocumented register.
   */
  static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
  {
  	u32 cfg;
  
  	if (!pci_find_capability(dev, PCI_CAP_ID_HT))
  		return;
  
  	pci_read_config_dword(dev, 0x74, &cfg);
  
  	if (cfg & ((1 << 2) | (1 << 15))) {
  		printk(KERN_INFO "Rewriting irq routing register on MCP55
  ");
  		cfg &= ~((1 << 2) | (1 << 15));
  		pci_write_config_dword(dev, 0x74, cfg);
  	}
  }
  
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
  			PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
  			nvbridge_check_legacy_irq_routing);
  
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
  			PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
  			nvbridge_check_legacy_irq_routing);
  
  static int ht_check_msi_mapping(struct pci_dev *dev)
  {
  	int pos, ttl = 48;
  	int found = 0;
  
  	/* check if there is HT MSI cap or enabled on this device */
  	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
  	while (pos && ttl--) {
  		u8 flags;
  
  		if (found < 1)
  			found = 1;
  		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
  					 &flags) == 0) {
  			if (flags & HT_MSI_FLAGS_ENABLE) {
  				if (found < 2) {
  					found = 2;
  					break;
  				}
  			}
  		}
  		pos = pci_find_next_ht_capability(dev, pos,
  						  HT_CAPTYPE_MSI_MAPPING);
  	}
  
  	return found;
  }
  
  static int host_bridge_with_leaf(struct pci_dev *host_bridge)
  {
  	struct pci_dev *dev;
  	int pos;
  	int i, dev_no;
  	int found = 0;
  
  	dev_no = host_bridge->devfn >> 3;
  	for (i = dev_no + 1; i < 0x20; i++) {
  		dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
  		if (!dev)
  			continue;
  
  		/* found next host bridge ?*/
  		pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
  		if (pos != 0) {
  			pci_dev_put(dev);
  			break;
  		}
  
  		if (ht_check_msi_mapping(dev)) {
  			found = 1;
  			pci_dev_put(dev);
  			break;
  		}
  		pci_dev_put(dev);
  	}
  
  	return found;
  }
  
  #define PCI_HT_CAP_SLAVE_CTRL0     4    /* link control */
  #define PCI_HT_CAP_SLAVE_CTRL1     8    /* link control to */
  
  static int is_end_of_ht_chain(struct pci_dev *dev)
  {
  	int pos, ctrl_off;
  	int end = 0;
  	u16 flags, ctrl;
  
  	pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
  
  	if (!pos)
  		goto out;
  
  	pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
  
  	ctrl_off = ((flags >> 10) & 1) ?
  			PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
  	pci_read_config_word(dev, pos + ctrl_off, &ctrl);
  
  	if (ctrl & (1 << 6))
  		end = 1;
  
  out:
  	return end;
  }
  
  static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
  {
  	struct pci_dev *host_bridge;
  	int pos;
  	int i, dev_no;
  	int found = 0;
  
  	dev_no = dev->devfn >> 3;
  	for (i = dev_no; i >= 0; i--) {
  		host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
  		if (!host_bridge)
  			continue;
  
  		pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
  		if (pos != 0) {
  			found = 1;
  			break;
  		}
  		pci_dev_put(host_bridge);
  	}
  
  	if (!found)
  		return;
  
  	/* don't enable end_device/host_bridge with leaf directly here */
  	if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
  	    host_bridge_with_leaf(host_bridge))
  		goto out;
  
  	/* root did that ! */
  	if (msi_ht_cap_enabled(host_bridge))
  		goto out;
  
  	ht_enable_msi_mapping(dev);
  
  out:
  	pci_dev_put(host_bridge);
  }
  
  static void ht_disable_msi_mapping(struct pci_dev *dev)
  {
  	int pos, ttl = 48;
  
  	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
  	while (pos && ttl--) {
  		u8 flags;
  
  		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
  					 &flags) == 0) {
  			dev_info(&dev->dev, "Disabling HT MSI Mapping
  ");
  
  			pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
  					      flags & ~HT_MSI_FLAGS_ENABLE);
  		}
  		pos = pci_find_next_ht_capability(dev, pos,
  						  HT_CAPTYPE_MSI_MAPPING);
  	}
  }
  
  static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
  {
  	struct pci_dev *host_bridge;
  	int pos;
  	int found;
  
  	if (!pci_msi_enabled())
  		return;
  
  	/* check if there is HT MSI cap or enabled on this device */
  	found = ht_check_msi_mapping(dev);
  
  	/* no HT MSI CAP */
  	if (found == 0)
  		return;
  
  	/*
  	 * HT MSI mapping should be disabled on devices that are below
  	 * a non-Hypertransport host bridge. Locate the host bridge...
  	 */
  	host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
  	if (host_bridge == NULL) {
  		dev_warn(&dev->dev,
  			 "nv_msi_ht_cap_quirk didn't locate host bridge
  ");
  		return;
  	}
  
  	pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
  	if (pos != 0) {
  		/* Host bridge is to HT */
  		if (found == 1) {
  			/* it is not enabled, try to enable it */
  			if (all)
  				ht_enable_msi_mapping(dev);
  			else
  				nv_ht_enable_msi_mapping(dev);
  		}
  		goto out;
  	}
  
  	/* HT MSI is not enabled */
  	if (found == 1)
  		goto out;
  
  	/* Host bridge is not to HT, disable HT MSI mapping on this device */
  	ht_disable_msi_mapping(dev);
  
  out:
  	pci_dev_put(host_bridge);
  }
  
  static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
  {
  	return __nv_msi_ht_cap_quirk(dev, 1);
  }
  
  static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
  {
  	return __nv_msi_ht_cap_quirk(dev, 0);
  }
  
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
  
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
  
  static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
  {
  	dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
  }
  static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
  {
  	struct pci_dev *p;
  
  	/* SB700 MSI issue will be fixed at HW level from revision A21,
  	 * we need check PCI REVISION ID of SMBus controller to get SB700
  	 * revision.
  	 */
  	p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
  			   NULL);
  	if (!p)
  		return;
  
  	if ((p->revision < 0x3B) && (p->revision >= 0x30))
  		dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
  	pci_dev_put(p);
  }
  static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
  {
  	/* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
  	if (dev->revision < 0x18) {
  		dev_info(&dev->dev, "set MSI_INTX_DISABLE_BUG flag
  ");
  		dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
  	}
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_TIGON3_5780,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_TIGON3_5780S,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_TIGON3_5714,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_TIGON3_5714S,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_TIGON3_5715,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
  			PCI_DEVICE_ID_TIGON3_5715S,
  			quirk_msi_intx_disable_bug);
  
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
  			quirk_msi_intx_disable_ati_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
  			quirk_msi_intx_disable_ati_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
  			quirk_msi_intx_disable_ati_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
  			quirk_msi_intx_disable_ati_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
  			quirk_msi_intx_disable_ati_bug);
  
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
  			quirk_msi_intx_disable_bug);
  
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
  			quirk_msi_intx_disable_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
  			quirk_msi_intx_disable_qca_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
  			quirk_msi_intx_disable_qca_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
  			quirk_msi_intx_disable_qca_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
  			quirk_msi_intx_disable_qca_bug);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
  			quirk_msi_intx_disable_qca_bug);
  #endif /* CONFIG_PCI_MSI */
  
  /* Allow manual resource allocation for PCI hotplug bridges
   * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
   * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
   * kernel fails to allocate resources when hotplug device is
   * inserted and PCI bus is rescanned.
   */
  static void quirk_hotplug_bridge(struct pci_dev *dev)
  {
  	dev->is_hotplug_bridge = 1;
  }
  
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
  
  /*
   * This is a quirk for the Ricoh MMC controller found as a part of
   * some mulifunction chips.
  
   * This is very similar and based on the ricoh_mmc driver written by
   * Philip Langdale. Thank you for these magic sequences.
   *
   * These chips implement the four main memory card controllers (SD, MMC, MS, xD)
   * and one or both of cardbus or firewire.
   *
   * It happens that they implement SD and MMC
   * support as separate controllers (and PCI functions). The linux SDHCI
   * driver supports MMC cards but the chip detects MMC cards in hardware
   * and directs them to the MMC controller - so the SDHCI driver never sees
   * them.
   *
   * To get around this, we must disable the useless MMC controller.
   * At that point, the SDHCI controller will start seeing them
   * It seems to be the case that the relevant PCI registers to deactivate the
   * MMC controller live on PCI function 0, which might be the cardbus controller
   * or the firewire controller, depending on the particular chip in question
   *
   * This has to be done early, because as soon as we disable the MMC controller
   * other pci functions shift up one level, e.g. function #2 becomes function
   * #1, and this will confuse the pci core.
   */
  
  #ifdef CONFIG_MMC_RICOH_MMC
  static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
  {
  	/* disable via cardbus interface */
  	u8 write_enable;
  	u8 write_target;
  	u8 disable;
  
  	/* disable must be done via function #0 */
  	if (PCI_FUNC(dev->devfn))
  		return;
  
  	pci_read_config_byte(dev, 0xB7, &disable);
  	if (disable & 0x02)
  		return;
  
  	pci_read_config_byte(dev, 0x8E, &write_enable);
  	pci_write_config_byte(dev, 0x8E, 0xAA);
  	pci_read_config_byte(dev, 0x8D, &write_target);
  	pci_write_config_byte(dev, 0x8D, 0xB7);
  	pci_write_config_byte(dev, 0xB7, disable | 0x02);
  	pci_write_config_byte(dev, 0x8E, write_enable);
  	pci_write_config_byte(dev, 0x8D, write_target);
  
  	dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)
  ");
  	dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller
  ");
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
  
  static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
  {
  	/* disable via firewire interface */
  	u8 write_enable;
  	u8 disable;
  
  	/* disable must be done via function #0 */
  	if (PCI_FUNC(dev->devfn))
  		return;
  	/*
  	 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
  	 * certain types of SD/MMC cards. Lowering the SD base
  	 * clock frequency from 200Mhz to 50Mhz fixes this issue.
  	 *
  	 * 0x150 - SD2.0 mode enable for changing base clock
  	 *	   frequency to 50Mhz
  	 * 0xe1  - Base clock frequency
  	 * 0x32  - 50Mhz new clock frequency
  	 * 0xf9  - Key register for 0x150
  	 * 0xfc  - key register for 0xe1
  	 */
  	if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
  	    dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
  		pci_write_config_byte(dev, 0xf9, 0xfc);
  		pci_write_config_byte(dev, 0x150, 0x10);
  		pci_write_config_byte(dev, 0xf9, 0x00);
  		pci_write_config_byte(dev, 0xfc, 0x01);
  		pci_write_config_byte(dev, 0xe1, 0x32);
  		pci_write_config_byte(dev, 0xfc, 0x00);
  
  		dev_notice(&dev->dev, "MMC controller base frequency changed to 50Mhz.
  ");
  	}
  
  	pci_read_config_byte(dev, 0xCB, &disable);
  
  	if (disable & 0x02)
  		return;
  
  	pci_read_config_byte(dev, 0xCA, &write_enable);
  	pci_write_config_byte(dev, 0xCA, 0x57);
  	pci_write_config_byte(dev, 0xCB, disable | 0x02);
  	pci_write_config_byte(dev, 0xCA, write_enable);
  
  	dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)
  ");
  	dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller
  ");
  
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
  DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
  #endif /*CONFIG_MMC_RICOH_MMC*/
  
  #ifdef CONFIG_DMAR_TABLE
  #define VTUNCERRMSK_REG	0x1ac
  #define VTD_MSK_SPEC_ERRORS	(1 << 31)
  /*
   * This is a quirk for masking vt-d spec defined errors to platform error
   * handling logic. With out this, platforms using Intel 7500, 5500 chipsets
   * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
   * on the RAS config settings of the platform) when a vt-d fault happens.
   * The resulting SMI caused the system to hang.
   *
   * VT-d spec related errors are already handled by the VT-d OS code, so no
   * need to report the same error through other channels.
   */
  static void vtd_mask_spec_errors(struct pci_dev *dev)
  {
  	u32 word;
  
  	pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
  	pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
  }
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
  #endif
  
  static void fixup_ti816x_class(struct pci_dev *dev)
  {
  	/* TI 816x devices do not have class code set when in PCIe boot mode */
  	dev_info(&dev->dev, "Setting PCI class for 816x PCIe device
  ");
  	dev->class = PCI_CLASS_MULTIMEDIA_VIDEO;
  }
  DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
  				 PCI_CLASS_NOT_DEFINED, 0, fixup_ti816x_class);
  
  /* TW6869 Frame grabber has same problem as ti816x */
  static void fixup_tw6869_class(struct pci_dev* dev)
  {
  	dev_info(&dev->dev, "Setting PCI class for tw6869 PCIe device
  ");
  	dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
  }
  DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869,
  				PCI_CLASS_NOT_DEFINED, 0, fixup_tw6869_class);
  
  /* Some PCIe devices do not work reliably with the claimed maximum
   * payload size supported.
   */
  static void fixup_mpss_256(struct pci_dev *dev)
  {
  	dev->pcie_mpss = 1; /* 256 bytes */
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
  			 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
  			 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
  			 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
  
  /* Intel 5000 and 5100 Memory controllers have an errata with read completion
   * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
   * Since there is no way of knowing what the PCIE MPS on each fabric will be
   * until all of the devices are discovered and buses walked, read completion
   * coalescing must be disabled.  Unfortunately, it cannot be re-enabled because
   * it is possible to hotplug a device with MPS of 256B.
   */
  static void quirk_intel_mc_errata(struct pci_dev *dev)
  {
  	int err;
  	u16 rcc;
  
  	if (pcie_bus_config == PCIE_BUS_TUNE_OFF)
  		return;
  
  	/* Intel errata specifies bits to change but does not say what they are.
  	 * Keeping them magical until such time as the registers and values can
  	 * be explained.
  	 */
  	err = pci_read_config_word(dev, 0x48, &rcc);
  	if (err) {
  		dev_err(&dev->dev, "Error attempting to read the read "
  			"completion coalescing register.
  ");
  		return;
  	}
  
  	if (!(rcc & (1 << 10)))
  		return;
  
  	rcc &= ~(1 << 10);
  
  	err = pci_write_config_word(dev, 0x48, rcc);
  	if (err) {
  		dev_err(&dev->dev, "Error attempting to write the read "
  			"completion coalescing register.
  ");
  		return;
  	}
  
  	pr_info_once("Read completion coalescing disabled due to hardware "
  		     "errata relating to 256B MPS.
  ");
  }
  /* Intel 5000 series memory controllers and ports 2-7 */
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
  /* Intel 5100 series memory controllers and ports 2-7 */
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
  
  
  /*
   * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum.  To
   * work around this, query the size it should be configured to by the device and
   * modify the resource end to correspond to this new size.
   */
  static void quirk_intel_ntb(struct pci_dev *dev)
  {
  	int rc;
  	u8 val;
  
  	rc = pci_read_config_byte(dev, 0x00D0, &val);
  	if (rc)
  		return;
  
  	dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
  
  	rc = pci_read_config_byte(dev, 0x00D1, &val);
  	if (rc)
  		return;
  
  	dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
  
  static ktime_t fixup_debug_start(struct pci_dev *dev,
  				 void (*fn)(struct pci_dev *dev))
  {
  	ktime_t calltime = ktime_set(0, 0);
  
  	dev_dbg(&dev->dev, "calling %pF
  ", fn);
  	if (initcall_debug) {
  		pr_debug("calling  %pF @ %i for %s
  ",
  			 fn, task_pid_nr(current), dev_name(&dev->dev));
  		calltime = ktime_get();
  	}
  
  	return calltime;
  }
  
  static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
  			       void (*fn)(struct pci_dev *dev))
  {
  	ktime_t delta, rettime;
  	unsigned long long duration;
  
  	if (initcall_debug) {
  		rettime = ktime_get();
  		delta = ktime_sub(rettime, calltime);
  		duration = (unsigned long long) ktime_to_ns(delta) >> 10;
  		pr_debug("pci fixup %pF returned after %lld usecs for %s
  ",
  			 fn, duration, dev_name(&dev->dev));
  	}
  }
  
  /*
   * Some BIOS implementations leave the Intel GPU interrupts enabled,
   * even though no one is handling them (f.e. i915 driver is never loaded).
   * Additionally the interrupt destination is not set up properly
   * and the interrupt ends up -somewhere-.
   *
   * These spurious interrupts are "sticky" and the kernel disables
   * the (shared) interrupt line after 100.000+ generated interrupts.
   *
   * Fix it by disabling the still enabled interrupts.
   * This resolves crashes often seen on monitor unplug.
   */
  #define I915_DEIER_REG 0x4400c
  static void disable_igfx_irq(struct pci_dev *dev)
  {
  	void __iomem *regs = pci_iomap(dev, 0, 0);
  	if (regs == NULL) {
  		dev_warn(&dev->dev, "igfx quirk: Can't iomap PCI device
  ");
  		return;
  	}
  
  	/* Check if any interrupt line is still enabled */
  	if (readl(regs + I915_DEIER_REG) != 0) {
  		dev_warn(&dev->dev, "BIOS left Intel GPU interrupts enabled; "
  			"disabling
  ");
  
  		writel(0, regs + I915_DEIER_REG);
  	}
  
  	pci_iounmap(dev, regs);
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
  
  /*
   * PCI devices which are on Intel chips can skip the 10ms delay
   * before entering D3 mode.
   */
  static void quirk_remove_d3_delay(struct pci_dev *dev)
  {
  	dev->d3_delay = 0;
  }
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3_delay);
  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3_delay);
  
  /*
   * Some devices may pass our check in pci_intx_mask_supported if
   * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
   * support this feature.
   */
  static void quirk_broken_intx_masking(struct pci_dev *dev)
  {
  	dev->broken_intx_masking = 1;
  }
  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, 0x0030,
  			 quirk_broken_intx_masking);
  DECLARE_PCI_FIXUP_HEADER(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
  			 quirk_broken_intx_masking);
  
  static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
  			  struct pci_fixup *end)
  {
  	ktime_t calltime;
  
  	for (; f < end; f++)
  		if ((f->class == (u32) (dev->class >> f->class_shift) ||
  		     f->class == (u32) PCI_ANY_ID) &&
  		    (f->vendor == dev->vendor ||
  		     f->vendor == (u16) PCI_ANY_ID) &&
  		    (f->device == dev->device ||
  		     f->device == (u16) PCI_ANY_ID)) {
  			calltime = fixup_debug_start(dev, f->hook);
  			f->hook(dev);
  			fixup_debug_report(dev, calltime, f->hook);
  		}
  }
  
  extern struct pci_fixup __start_pci_fixups_early[];
  extern struct pci_fixup __end_pci_fixups_early[];
  extern struct pci_fixup __start_pci_fixups_header[];
  extern struct pci_fixup __end_pci_fixups_header[];
  extern struct pci_fixup __start_pci_fixups_final[];
  extern struct pci_fixup __end_pci_fixups_final[];
  extern struct pci_fixup __start_pci_fixups_enable[];
  extern struct pci_fixup __end_pci_fixups_enable[];
  extern struct pci_fixup __start_pci_fixups_resume[];
  extern struct pci_fixup __end_pci_fixups_resume[];
  extern struct pci_fixup __start_pci_fixups_resume_early[];
  extern struct pci_fixup __end_pci_fixups_resume_early[];
  extern struct pci_fixup __start_pci_fixups_suspend[];
  extern struct pci_fixup __end_pci_fixups_suspend[];
  
  static bool pci_apply_fixup_final_quirks;
  
  void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
  {
  	struct pci_fixup *start, *end;
  
  	switch(pass) {
  	case pci_fixup_early:
  		start = __start_pci_fixups_early;
  		end = __end_pci_fixups_early;
  		break;
  
  	case pci_fixup_header:
  		start = __start_pci_fixups_header;
  		end = __end_pci_fixups_header;
  		break;
  
  	case pci_fixup_final:
  		if (!pci_apply_fixup_final_quirks)
  			return;
  		start = __start_pci_fixups_final;
  		end = __end_pci_fixups_final;
  		break;
  
  	case pci_fixup_enable:
  		start = __start_pci_fixups_enable;
  		end = __end_pci_fixups_enable;
  		break;
  
  	case pci_fixup_resume:
  		start = __start_pci_fixups_resume;
  		end = __end_pci_fixups_resume;
  		break;
  
  	case pci_fixup_resume_early:
  		start = __start_pci_fixups_resume_early;
  		end = __end_pci_fixups_resume_early;
  		break;
  
  	case pci_fixup_suspend:
  		start = __start_pci_fixups_suspend;
  		end = __end_pci_fixups_suspend;
  		break;
  
  	default:
  		/* stupid compiler warning, you would think with an enum... */
  		return;
  	}
  	pci_do_fixups(dev, start, end);
  }
  EXPORT_SYMBOL(pci_fixup_device);
  
  
  static int __init pci_apply_final_quirks(void)
  {
  	struct pci_dev *dev = NULL;
  	u8 cls = 0;
  	u8 tmp;
  
  	if (pci_cache_line_size)
  		printk(KERN_DEBUG "PCI: CLS %u bytes
  ",
  		       pci_cache_line_size << 2);
  
  	pci_apply_fixup_final_quirks = true;
  	for_each_pci_dev(dev) {
  		pci_fixup_device(pci_fixup_final, dev);
  		/*
  		 * If arch hasn't set it explicitly yet, use the CLS
  		 * value shared by all PCI devices.  If there's a
  		 * mismatch, fall back to the default value.
  		 */
  		if (!pci_cache_line_size) {
  			pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
  			if (!cls)
  				cls = tmp;
  			if (!tmp || cls == tmp)
  				continue;
  
  			printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), "
  			       "using %u bytes
  ", cls << 2, tmp << 2,
  			       pci_dfl_cache_line_size << 2);
  			pci_cache_line_size = pci_dfl_cache_line_size;
  		}
  	}
  
  	if (!pci_cache_line_size) {
  		printk(KERN_DEBUG "PCI: CLS %u bytes, default %u
  ",
  		       cls << 2, pci_dfl_cache_line_size << 2);
  		pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
  	}
  
  	return 0;
  }
  
  fs_initcall_sync(pci_apply_final_quirks);
  
  /*
   * Followings are device-specific reset methods which can be used to
   * reset a single function if other methods (e.g. FLR, PM D0->D3) are
   * not available.
   */
  static int reset_intel_generic_dev(struct pci_dev *dev, int probe)
  {
  	int pos;
  
  	/* only implement PCI_CLASS_SERIAL_USB at present */
  	if (dev->class == PCI_CLASS_SERIAL_USB) {
  		pos = pci_find_capability(dev, PCI_CAP_ID_VNDR);
  		if (!pos)
  			return -ENOTTY;
  
  		if (probe)
  			return 0;
  
  		pci_write_config_byte(dev, pos + 0x4, 1);
  		msleep(100);
  
  		return 0;
  	} else {
  		return -ENOTTY;
  	}
  }
  
  static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
  {
  	/*
  	 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
  	 *
  	 * The 82599 supports FLR on VFs, but FLR support is reported only
  	 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
  	 * Therefore, we can't use pcie_flr(), which checks the VF DEVCAP.
  	 */
  
  	if (probe)
  		return 0;
  
  	if (!pci_wait_for_pending_transaction(dev))
  		dev_err(&dev->dev, "transaction is not cleared; proceeding with reset anyway
  ");
  
  	pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR);
  
  	msleep(100);
  
  	return 0;
  }
  
  #include "../gpu/drm/i915/i915_reg.h"
  #define MSG_CTL			0x45010
  #define NSDE_PWR_STATE		0xd0100
  #define IGD_OPERATION_TIMEOUT	10000     /* set timeout 10 seconds */
  
  static int reset_ivb_igd(struct pci_dev *dev, int probe)
  {
  	void __iomem *mmio_base;
  	unsigned long timeout;
  	u32 val;
  
  	if (probe)
  		return 0;
  
  	mmio_base = pci_iomap(dev, 0, 0);
  	if (!mmio_base)
  		return -ENOMEM;
  
  	iowrite32(0x00000002, mmio_base + MSG_CTL);
  
  	/*
  	 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
  	 * driver loaded sets the right bits. However, this's a reset and
  	 * the bits have been set by i915 previously, so we clobber
  	 * SOUTH_CHICKEN2 register directly here.
  	 */
  	iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
  
  	val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
  	iowrite32(val, mmio_base + PCH_PP_CONTROL);
  
  	timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
  	do {
  		val = ioread32(mmio_base + PCH_PP_STATUS);
  		if ((val & 0xb0000000) == 0)
  			goto reset_complete;
  		msleep(10);
  	} while (time_before(jiffies, timeout));
  	dev_warn(&dev->dev, "timeout during reset
  ");
  
  reset_complete:
  	iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
  
  	pci_iounmap(dev, mmio_base);
  	return 0;
  }
  
  /*
   * Device-specific reset method for Chelsio T4-based adapters.
   */
  static int reset_chelsio_generic_dev(struct pci_dev *dev, int probe)
  {
  	u16 old_command;
  	u16 msix_flags;
  
  	/*
  	 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
  	 * that we have no device-specific reset method.
  	 */
  	if ((dev->device & 0xf000) != 0x4000)
  		return -ENOTTY;
  
  	/*
  	 * If this is the "probe" phase, return 0 indicating that we can
  	 * reset this device.
  	 */
  	if (probe)
  		return 0;
  
  	/*
  	 * T4 can wedge if there are DMAs in flight within the chip and Bus
  	 * Master has been disabled.  We need to have it on till the Function
  	 * Level Reset completes.  (BUS_MASTER is disabled in
  	 * pci_reset_function()).
  	 */
  	pci_read_config_word(dev, PCI_COMMAND, &old_command);
  	pci_write_config_word(dev, PCI_COMMAND,
  			      old_command | PCI_COMMAND_MASTER);
  
  	/*
  	 * Perform the actual device function reset, saving and restoring
  	 * configuration information around the reset.
  	 */
  	pci_save_state(dev);
  
  	/*
  	 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
  	 * are disabled when an MSI-X interrupt message needs to be delivered.
  	 * So we briefly re-enable MSI-X interrupts for the duration of the
  	 * FLR.  The pci_restore_state() below will restore the original
  	 * MSI-X state.
  	 */
  	pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
  	if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
  		pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
  				      msix_flags |
  				      PCI_MSIX_FLAGS_ENABLE |
  				      PCI_MSIX_FLAGS_MASKALL);
  
  	/*
  	 * Start of pcie_flr() code sequence.  This reset code is a copy of
  	 * the guts of pcie_flr() because that's not an exported function.
  	 */
  
  	if (!pci_wait_for_pending_transaction(dev))
  		dev_err(&dev->dev, "transaction is not cleared; proceeding with reset anyway
  ");
  
  	pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR);
  	msleep(100);
  
  	/*
  	 * End of pcie_flr() code sequence.
  	 */
  
  	/*
  	 * Restore the configuration information (BAR values, etc.) including
  	 * the original PCI Configuration Space Command word, and return
  	 * success.
  	 */
  	pci_restore_state(dev);
  	pci_write_config_word(dev, PCI_COMMAND, old_command);
  	return 0;
  }
  
  #define PCI_DEVICE_ID_INTEL_82599_SFP_VF   0x10ed
  #define PCI_DEVICE_ID_INTEL_IVB_M_VGA      0x0156
  #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA     0x0166
  
  static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
  	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
  		 reset_intel_82599_sfp_virtfn },
  	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
  		reset_ivb_igd },
  	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
  		reset_ivb_igd },
  	{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
  		reset_intel_generic_dev },
  	{ PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
  		reset_chelsio_generic_dev },
  	{ 0 }
  };
  
  /*
   * These device-specific reset methods are here rather than in a driver
   * because when a host assigns a device to a guest VM, the host may need
   * to reset the device but probably doesn't have a driver for it.
   */
  int pci_dev_specific_reset(struct pci_dev *dev, int probe)
  {
  	const struct pci_dev_reset_methods *i;
  
  	for (i = pci_dev_reset_methods; i->reset; i++) {
  		if ((i->vendor == dev->vendor ||
  		     i->vendor == (u16)PCI_ANY_ID) &&
  		    (i->device == dev->device ||
  		     i->device == (u16)PCI_ANY_ID))
  			return i->reset(dev, probe);
  	}
  
  	return -ENOTTY;
  }
  
  static struct pci_dev *pci_func_0_dma_source(struct pci_dev *dev)
  {
  	if (!PCI_FUNC(dev->devfn))
  		return pci_dev_get(dev);
  
  	return pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
  }
  
  static const struct pci_dev_dma_source {
  	u16 vendor;
  	u16 device;
  	struct pci_dev *(*dma_source)(struct pci_dev *dev);
  } pci_dev_dma_source[] = {
  	/*
  	 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
  	 *
  	 * Some Ricoh devices use the function 0 source ID for DMA on
  	 * other functions of a multifunction device.  The DMA devices
  	 * is therefore function 0, which will have implications of the
  	 * iommu grouping of these devices.
  	 */
  	{ PCI_VENDOR_ID_RICOH, 0xe822, pci_func_0_dma_source },
  	{ PCI_VENDOR_ID_RICOH, 0xe230, pci_func_0_dma_source },
  	{ PCI_VENDOR_ID_RICOH, 0xe832, pci_func_0_dma_source },
  	{ PCI_VENDOR_ID_RICOH, 0xe476, pci_func_0_dma_source },
  	{ 0 }
  };
  
  /*
   * IOMMUs with isolation capabilities need to be programmed with the
   * correct source ID of a device.  In most cases, the source ID matches
   * the device doing the DMA, but sometimes hardware is broken and will
   * tag the DMA as being sourced from a different device.  This function
   * allows that translation.  Note that the reference count of the
   * returned device is incremented on all paths.
   */
  struct pci_dev *pci_get_dma_source(struct pci_dev *dev)
  {
  	const struct pci_dev_dma_source *i;
  
  	for (i = pci_dev_dma_source; i->dma_source; i++) {
  		if ((i->vendor == dev->vendor ||
  		     i->vendor == (u16)PCI_ANY_ID) &&
  		    (i->device == dev->device ||
  		     i->device == (u16)PCI_ANY_ID))
  			return i->dma_source(dev);
  	}
  
  	return pci_dev_get(dev);
  }
  
  /*
   * AMD has indicated that the devices below do not support peer-to-peer
   * in any system where they are found in the southbridge with an AMD
   * IOMMU in the system.  Multifunction devices that do not support
   * peer-to-peer between functions can claim to support a subset of ACS.
   * Such devices effectively enable request redirect (RR) and completion
   * redirect (CR) since all transactions are redirected to the upstream
   * root complex.
   *
   * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94086
   * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94102
   * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/99402
   *
   * 1002:4385 SBx00 SMBus Controller
   * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
   * 1002:4383 SBx00 Azalia (Intel HDA)
   * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
   * 1002:4384 SBx00 PCI to PCI Bridge
   * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
   */
  static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
  {
  #ifdef CONFIG_ACPI
  	struct acpi_table_header *header = NULL;
  	acpi_status status;
  
  	/* Targeting multifunction devices on the SB (appears on root bus) */
  	if (!dev->multifunction || !pci_is_root_bus(dev->bus))
  		return -ENODEV;
  
  	/* The IVRS table describes the AMD IOMMU */
  	status = acpi_get_table("IVRS", 0, &header);
  	if (ACPI_FAILURE(status))
  		return -ENODEV;
  
  	/* Filter out flags not applicable to multifunction */
  	acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
  
  	return acs_flags & ~(PCI_ACS_RR | PCI_ACS_CR) ? 0 : 1;
  #else
  	return -ENODEV;
  #endif
  }
  
  static const struct pci_dev_acs_enabled {
  	u16 vendor;
  	u16 device;
  	int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
  } pci_dev_acs_enabled[] = {
  	{ PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
  	{ PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
  	{ PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
  	{ PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
  	{ PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
  	{ PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
  	{ 0 }
  };
  
  int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
  {
  	const struct pci_dev_acs_enabled *i;
  	int ret;
  
  	/*
  	 * Allow devices that do not expose standard PCIe ACS capabilities
  	 * or control to indicate their support here.  Multi-function express
  	 * devices which do not allow internal peer-to-peer between functions,
  	 * but do not implement PCIe ACS may wish to return true here.
  	 */
  	for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
  		if ((i->vendor == dev->vendor ||
  		     i->vendor == (u16)PCI_ANY_ID) &&
  		    (i->device == dev->device ||
  		     i->device == (u16)PCI_ANY_ID)) {
  			ret = i->acs_enabled(dev, acs_flags);
  			if (ret >= 0)
  				return ret;
  		}
  	}
  
  	return -ENOTTY;
  }