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linux_old1/drivers/pci/quirks.c

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/*
* 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 <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\n");
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\n");
}
}
/*
* 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\n");
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\n");
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\n");
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\n");
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\n");
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\n");
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\n");
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\n");
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\n");
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);
/*
* 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->flags |= IORESOURCE_UNSET;
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\n");
}
}
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\n", 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\n");
/* 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\n", 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\n", 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\n", 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)\n", 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\n");
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\n",
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\n");
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\n");
dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
}
}
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\n",
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\n",
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\n");
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->flags |= IORESOURCE_UNSET;
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)\n",
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\n");
}
}
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\n");
}
}
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\n");
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\n",
val);
else
dev_info(&dev->dev, "Enabled i801 SMBus device\n");
}
}
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\n");
}
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\n");
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\n",
val);
else
dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
}
}
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\n");
}
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]\n",
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]\n",
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]\n",
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]\n",
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\n",
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]\n",
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->flags |= IORESOURCE_UNSET;
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\n",
bar);
r->flags |= IORESOURCE_UNSET;
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)\n",
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\n");
return;
}
cmd_hi = readb(csr + 3);
if (cmd_hi == 0) {
dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; disabling\n");
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\n");
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\n");
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\n");
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\n");
}
}
}
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\n");
}
}
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\n");
}
}
}
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\n");
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\n");
}
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\n");
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\n",
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\n");
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\n");
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\n");
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\n");
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\n");
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\n");
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\n");
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\n");
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)\n");
dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
}
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.\n");
}
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)\n");
dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
}
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\n");
dev->class = PCI_CLASS_MULTIMEDIA_VIDEO;
}
DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
PCI_CLASS_NOT_DEFINED, 0, fixup_ti816x_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\n");
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\n");
return;
}
pr_info_once("Read completion coalescing disabled due to hardware errata relating to 256B MPS\n");
}
/* 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\n", fn);
if (initcall_debug) {
pr_debug("calling %pF @ %i for %s\n",
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\n",
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\n");
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\n");
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);
/*
* Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
* Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
*
* RTL8110SC - Fails under PCI device assignment using DisINTx masking.
*/
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_REALTEK, 0x8169,
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\n",
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\n",
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\n",
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\n");
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\n");
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\n");
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 void quirk_dma_func0_alias(struct pci_dev *dev)
{
if (PCI_FUNC(dev->devfn) != 0) {
dev->dma_alias_devfn = PCI_DEVFN(PCI_SLOT(dev->devfn), 0);
dev->dev_flags |= PCI_DEV_FLAGS_DMA_ALIAS_DEVFN;
}
}
/*
* https://bugzilla.redhat.com/show_bug.cgi?id=605888
*
* Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
*/
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
static void quirk_dma_func1_alias(struct pci_dev *dev)
{
if (PCI_FUNC(dev->devfn) != 1) {
dev->dma_alias_devfn = PCI_DEVFN(PCI_SLOT(dev->devfn), 1);
dev->dev_flags |= PCI_DEV_FLAGS_DMA_ALIAS_DEVFN;
}
}
/*
* Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
* SKUs function 1 is present and is a legacy IDE controller, in other
* SKUs this function is not present, making this a ghost requester.
* https://bugzilla.kernel.org/show_bug.cgi?id=42679
*/
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
quirk_dma_func1_alias);
/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
quirk_dma_func1_alias);
/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
quirk_dma_func1_alias);
/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
quirk_dma_func1_alias);
/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
quirk_dma_func1_alias);
/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
quirk_dma_func1_alias);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
quirk_dma_func1_alias);
/* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
PCI_DEVICE_ID_JMICRON_JMB388_ESD,
quirk_dma_func1_alias);
/*
* A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
* using the wrong DMA alias for the device. Some of these devices can be
* used as either forward or reverse bridges, so we need to test whether the
* device is operating in the correct mode. We could probably apply this
* quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
* is for a non-root, non-PCIe bridge where the upstream device is PCIe and
* is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
*/
static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
{
if (!pci_is_root_bus(pdev->bus) &&
pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
!pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
}
/* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
quirk_use_pcie_bridge_dma_alias);
/* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
/* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
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
}
/*
* Many Intel PCH root ports do provide ACS-like features to disable peer
* transactions and validate bus numbers in requests, but do not provide an
* actual PCIe ACS capability. This is the list of device IDs known to fall
* into that category as provided by Intel in Red Hat bugzilla 1037684.
*/
static const u16 pci_quirk_intel_pch_acs_ids[] = {
/* Ibexpeak PCH */
0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
/* Cougarpoint PCH */
0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
/* Pantherpoint PCH */
0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
/* Lynxpoint-H PCH */
0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
/* Lynxpoint-LP PCH */
0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
/* Wildcat PCH */
0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
/* Patsburg (X79) PCH */
0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
};
static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
{
int i;
/* Filter out a few obvious non-matches first */
if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
return false;
for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
return true;
return false;
}
#define INTEL_PCH_ACS_FLAGS (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV)
static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
{
u16 flags = dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK ?
INTEL_PCH_ACS_FLAGS : 0;
if (!pci_quirk_intel_pch_acs_match(dev))
return -ENOTTY;
return acs_flags & ~flags ? 0 : 1;
}
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 },
{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_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;
}
/* Config space offset of Root Complex Base Address register */
#define INTEL_LPC_RCBA_REG 0xf0
/* 31:14 RCBA address */
#define INTEL_LPC_RCBA_MASK 0xffffc000
/* RCBA Enable */
#define INTEL_LPC_RCBA_ENABLE (1 << 0)
/* Backbone Scratch Pad Register */
#define INTEL_BSPR_REG 0x1104
/* Backbone Peer Non-Posted Disable */
#define INTEL_BSPR_REG_BPNPD (1 << 8)
/* Backbone Peer Posted Disable */
#define INTEL_BSPR_REG_BPPD (1 << 9)
/* Upstream Peer Decode Configuration Register */
#define INTEL_UPDCR_REG 0x1114
/* 5:0 Peer Decode Enable bits */
#define INTEL_UPDCR_REG_MASK 0x3f
static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
{
u32 rcba, bspr, updcr;
void __iomem *rcba_mem;
/*
* Read the RCBA register from the LPC (D31:F0). PCH root ports
* are D28:F* and therefore get probed before LPC, thus we can't
* use pci_get_slot/pci_read_config_dword here.
*/
pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
INTEL_LPC_RCBA_REG, &rcba);
if (!(rcba & INTEL_LPC_RCBA_ENABLE))
return -EINVAL;
rcba_mem = ioremap_nocache(rcba & INTEL_LPC_RCBA_MASK,
PAGE_ALIGN(INTEL_UPDCR_REG));
if (!rcba_mem)
return -ENOMEM;
/*
* The BSPR can disallow peer cycles, but it's set by soft strap and
* therefore read-only. If both posted and non-posted peer cycles are
* disallowed, we're ok. If either are allowed, then we need to use
* the UPDCR to disable peer decodes for each port. This provides the
* PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
*/
bspr = readl(rcba_mem + INTEL_BSPR_REG);
bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
updcr = readl(rcba_mem + INTEL_UPDCR_REG);
if (updcr & INTEL_UPDCR_REG_MASK) {
dev_info(&dev->dev, "Disabling UPDCR peer decodes\n");
updcr &= ~INTEL_UPDCR_REG_MASK;
writel(updcr, rcba_mem + INTEL_UPDCR_REG);
}
}
iounmap(rcba_mem);
return 0;
}
/* Miscellaneous Port Configuration register */
#define INTEL_MPC_REG 0xd8
/* MPC: Invalid Receive Bus Number Check Enable */
#define INTEL_MPC_REG_IRBNCE (1 << 26)
static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
{
u32 mpc;
/*
* When enabled, the IRBNCE bit of the MPC register enables the
* equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
* ensures that requester IDs fall within the bus number range
* of the bridge. Enable if not already.
*/
pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
dev_info(&dev->dev, "Enabling MPC IRBNCE\n");
mpc |= INTEL_MPC_REG_IRBNCE;
pci_write_config_word(dev, INTEL_MPC_REG, mpc);
}
}
static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
{
if (!pci_quirk_intel_pch_acs_match(dev))
return -ENOTTY;
if (pci_quirk_enable_intel_lpc_acs(dev)) {
dev_warn(&dev->dev, "Failed to enable Intel PCH ACS quirk\n");
return 0;
}
pci_quirk_enable_intel_rp_mpc_acs(dev);
dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
dev_info(&dev->dev, "Intel PCH root port ACS workaround enabled\n");
return 0;
}
static const struct pci_dev_enable_acs {
u16 vendor;
u16 device;
int (*enable_acs)(struct pci_dev *dev);
} pci_dev_enable_acs[] = {
{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_enable_intel_pch_acs },
{ 0 }
};
void pci_dev_specific_enable_acs(struct pci_dev *dev)
{
const struct pci_dev_enable_acs *i;
int ret;
for (i = pci_dev_enable_acs; i->enable_acs; i++) {
if ((i->vendor == dev->vendor ||
i->vendor == (u16)PCI_ANY_ID) &&
(i->device == dev->device ||
i->device == (u16)PCI_ANY_ID)) {
ret = i->enable_acs(dev);
if (ret >= 0)
return;
}
}
}
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