diff options
Diffstat (limited to 'sys/i386/pci/pci_pir.c')
| -rw-r--r-- | sys/i386/pci/pci_pir.c | 27 |
1 files changed, 10 insertions, 17 deletions
diff --git a/sys/i386/pci/pci_pir.c b/sys/i386/pci/pci_pir.c index d60241f..3d5afb7 100644 --- a/sys/i386/pci/pci_pir.c +++ b/sys/i386/pci/pci_pir.c @@ -236,6 +236,7 @@ pci_cfgintr(int bus, int device, int pin) int i, irq; struct bios_regs args; u_int16_t v; + int already = 0; v = pcibios_get_version(); if (v < 0x0210) { @@ -256,41 +257,33 @@ pci_cfgintr(int bus, int device, int pin) continue; irq = pci_cfgintr_linked(pe, pin); - if (irq != 255) { - PRVERB(("pci_cfgintr: %d:%d INT%c already routed to irq %d\n", - bus, device, 'A' + pin - 1, irq)); - return (irq); - } - irq = pci_cfgintr_unique(pe, pin); + if (irq != 255) + already = 1; + if (irq == 255) + irq = pci_cfgintr_unique(pe, pin); if (irq == 255) irq = pci_cfgintr_virgin(pe, pin); - + if (irq == 255) break; - - + /* * Ask the BIOS to route the interrupt */ args.eax = PCIBIOS_ROUTE_INTERRUPT; args.ebx = (bus << 8) | (device << 3); args.ecx = (irq << 8) | (0xa + pin - 1); /* pin value is 0xa - 0xd */ - if (bios32(&args, PCIbios.ventry, GSEL(GCODE_SEL, SEL_KPL))) { + if (bios32(&args, PCIbios.ventry, GSEL(GCODE_SEL, SEL_KPL)) && !already) { /* * XXX if it fails, we should try to smack the router * hardware directly. * XXX Also, there may be other choices that we can try that * will work. */ - PRVERB(("pci_cfgintr: ROUTE_INTERRUPT failured.\n")); + PRVERB(("pci_cfgintr: ROUTE_INTERRUPT failed.\n")); return(255); } - - /* - * XXX if it fails, we should try to smack the router hardware directly - */ - PRVERB(("pci_cfgintr: %d:%d INT%c routed to irq %d\n", - bus, device, 'A' + pin - 1, irq)); + printf("pci_cfgintr: %d:%d INT%c routed to irq %d\n", bus, device, 'A' + pin - 1, irq); return(irq); } |
