diff options
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index cda39a5c1..8029b1982 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -113,6 +113,55 @@ static void __init quirk_s3_64M(struct pci_dev *dev) } } +static void __init quirk_io_region(struct pci_dev *dev, unsigned region, unsigned size, int nr) +{ + region &= ~(size-1); + if (region) { + struct resource *res = dev->resource + nr; + + res->name = dev->name; + res->start = region; + res->end = region + size - 1; + res->flags = IORESOURCE_IO; + pci_claim_resource(dev, nr); + } +} + +/* + * 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 __init quirk_ali7101(struct pci_dev *dev) +{ + u16 region; + + pci_read_config_word(dev, 0xE0, ®ion); + quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES); + pci_read_config_word(dev, 0xE2, ®ion); + quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1); +} + +/* + * PIIX4 ACPI: Two IO regions pointed to by longwords at + * 0x40 (64 bytes of ACPI registers) + * 0x90 (32 bytes of SMB registers) + */ +static void __init quirk_piix4acpi(struct pci_dev *dev) +{ + u32 region; + + pci_read_config_dword(dev, 0x40, ®ion); + quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES); + pci_read_config_dword(dev, 0x90, ®ion); + quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1); +} /* * The main table of quirks. @@ -143,6 +192,8 @@ static struct pci_fixup pci_fixups[] __initdata = { { PCI_FIXUP_FINAL, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma }, { PCI_FIXUP_FINAL, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci }, { PCI_FIXUP_FINAL, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci }, + { PCI_FIXUP_FINAL, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4acpi }, + { PCI_FIXUP_FINAL, PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101 }, { 0 } }; |