diff options
Diffstat (limited to 'arch/i386/kernel/pci-pc.c')
| -rw-r--r-- | arch/i386/kernel/pci-pc.c | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/arch/i386/kernel/pci-pc.c b/arch/i386/kernel/pci-pc.c index e51e96e43..b588642cc 100644 --- a/arch/i386/kernel/pci-pc.c +++ b/arch/i386/kernel/pci-pc.c @@ -1103,9 +1103,9 @@ static char *pcibios_lookup_irq(struct pci_dev *dev, struct irq_routing_table *r { struct irq_info *q; struct pci_dev *router; - int i, pirq, newirq; + int i, pirq, newirq, reg; u32 rtrid, mask; - u8 x; + u8 x, y; char *msg = NULL; pin--; @@ -1169,14 +1169,44 @@ static char *pcibios_lookup_irq(struct pci_dev *dev, struct irq_routing_table *r DBG(" -> [PIIX] set to %02x\n", newirq); pci_write_config_byte(router, pirq, newirq); msg = "PIIX-NEW"; - } else - DBG(" -> [PIIX] sink\n"); + } else DBG(" -> [PIIX] sink\n"); break; case ID(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533): newirq = ali_set_irq(router, pirq-1, newirq); if (newirq) msg = "ALI"; break; + case ID(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596): + case ID(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686): + reg = 0x55 + (pirq >> 1); + pci_read_config_byte(router, reg, &x); + y = (pirq & 1) ? (x >> 4) : (x & 0x0f); + if (y) { + DBG(" -> [VIA] %02x\n", y); + newirq = y; + msg = "VIA"; + } else if (newirq) { + DBG(" -> [VIA] set to %02x\n", newirq); + x = (pirq & 1) ? ((x & 0x0f) | (newirq << 4)) : ((x & 0xf0) | newirq); + pci_write_config_byte(router, reg, y); + msg = "VIA-NEW"; + } else DBG(" -> [VIA] sink\n"); + break; + case ID(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C700): + reg = 0xb8 + (pirq >> 5); + pci_read_config_byte(router, reg, &x); + y = (pirq & 0x10) ? (x >> 4) : (x & 0x0f); + if (y) { + DBG(" -> [OPTI] %02x\n", y); + newirq = y; + msg = "OPTI"; + } else if (newirq) { + DBG(" -> [OPTI] set to %02x\n", newirq); + x = (pirq & 0x10) ? ((x & 0x0f) | (newirq << 4)) : ((x & 0xf0) | newirq); + pci_write_config_byte(router, reg, y); + msg = "OPTI-NEW"; + } else DBG(" -> [OPTI] sink\n"); + break; default: DBG(" -> unknown router %04x/%04x\n", rt->rtr_vendor, rt->rtr_device); if (newirq && mask == (1 << newirq)) { |