For those of you with Via interrupting routing issues (or interrupt-not-being-delivered issues, etc), please try out this patch and let me know if it fixes things. It originates from a tip from Adrian Cox... thanks Adrian! -- Jeff Garzik | Game called on account of naked chick Building 1024 | MandrakeSoft |
Index: drivers/pci/quirks.c =================================================================== RCS file: /cvsroot/gkernel/linux_2_4/drivers/pci/quirks.c,v retrieving revision 1.1.1.35 diff -u -r1.1.1.35 quirks.c --- drivers/pci/quirks.c 2001/05/02 09:26:23 1.1.1.35 +++ drivers/pci/quirks.c 2001/05/13 17:22:18 @@ -12,6 +12,7 @@ * use the PowerTweak utility (see http://powertweak.sourceforge.net). */ +#include <linux/config.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/pci.h> @@ -238,7 +239,34 @@ quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2); } + +/* we will likely need a better ifdef, something like + * ifdef CONFIG_EXTERNAL_APIC + */ +#ifdef CONFIG_X86_IO_APIC +extern int nr_ioapics; + /* + * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip + * devices to the external APIC. + */ +static void __init 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 */ + + /* Offset 0x58: External APIC IRQ output control */ + pci_write_config_byte (dev, 0x58, tmp); +} + +#endif /* CONFIG_X86_IO_APIC */ + + +/* * PIIX3 USB: We have to disable USB interrupts that are * hardwired to PIRQD# and may be shared with an * external device. @@ -322,6 +350,14 @@ { PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_2, quirk_piix3_usb }, { PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_2, quirk_piix3_usb }, { PCI_FIXUP_FINAL, PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy }, + +/* we will likely need a better ifdef, something like + * ifdef CONFIG_EXTERNAL_APIC + */ +#ifdef CONFIG_X86_IO_APIC + { PCI_FIXUP_FINAL, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, + quirk_via_ioapic }, +#endif + { 0 } };
