diff options
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index bb36bb69803f..11ca44387cb0 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -245,12 +245,19 @@ static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region, unsi { region &= ~(size-1); if (region) { + struct pci_bus_region bus_region; struct resource *res = dev->resource + nr; res->name = pci_name(dev); res->start = region; res->end = region + size - 1; res->flags = IORESOURCE_IO; + + /* Convert from PCI bus to resource space. */ + bus_region.start = res->start; + bus_region.end = res->end; + pcibios_bus_to_resource(dev, res, &bus_region); + pci_claim_resource(dev, nr); } } @@ -422,6 +429,25 @@ static void __devinit quirk_via_ioapic(struct pci_dev *dev) DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic ); /* + * VIA 8237: Some BIOSs 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 __devinit 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)) { + printk(KERN_INFO "PCI: 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); + +/* * 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 @@ -850,6 +876,12 @@ static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev) 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; + } } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge ); |