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Code Issues Releases Activity

Don't call the bios if the interrupt appaers to be already routed. Some

Browse Source 
older PCI BIOSes hate this and this leads to panics when it is done.  Also,
assume that a uniquely routed interrupt is already routed.  This also
seems to help some older laptops with feable BIOSes cope.
This commit is contained in:
Warner Losh 2002-03-16 23:02:41 +00:00
parent 048d9f99d1
commit 654d58ca24
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=92458
3 changed files with 9 additions and 9 deletions
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6
sys/amd64/pci/pci_cfgreg.c
View File

@ -267,10 +267,10 @@ pci_cfgintr(int bus, int device, int pin)
continue;
irq = pci_cfgintr_linked(pe, pin);
if (irq != 255)
already = 1;
if (irq == 255)
irq = pci_cfgintr_unique(pe, pin);
if (irq != 255)
already = 1;
if (irq == 255)
irq = pci_cfgintr_virgin(pe, pin);
if (irq == 255)
@ -282,7 +282,7 @@ pci_cfgintr(int bus, int device, int pin)
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)) && !already) {
if (!already && bios32(&args, PCIbios.ventry, GSEL(GCODE_SEL, SEL_KPL))) {
/*
* XXX if it fails, we should try to smack the router
* hardware directly.

6
sys/i386/pci/pci_cfgreg.c
View File

@ -267,10 +267,10 @@ pci_cfgintr(int bus, int device, int pin)
continue;
irq = pci_cfgintr_linked(pe, pin);
if (irq != 255)
already = 1;
if (irq == 255)
irq = pci_cfgintr_unique(pe, pin);
if (irq != 255)
already = 1;
if (irq == 255)
irq = pci_cfgintr_virgin(pe, pin);
if (irq == 255)
@ -282,7 +282,7 @@ pci_cfgintr(int bus, int device, int pin)
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)) && !already) {
if (!already && bios32(&args, PCIbios.ventry, GSEL(GCODE_SEL, SEL_KPL))) {
/*
* XXX if it fails, we should try to smack the router
* hardware directly.

6
sys/i386/pci/pci_pir.c
View File

@ -267,10 +267,10 @@ pci_cfgintr(int bus, int device, int pin)
continue;
irq = pci_cfgintr_linked(pe, pin);
if (irq != 255)
already = 1;
if (irq == 255)
irq = pci_cfgintr_unique(pe, pin);
if (irq != 255)
already = 1;
if (irq == 255)
irq = pci_cfgintr_virgin(pe, pin);
if (irq == 255)
@ -282,7 +282,7 @@ pci_cfgintr(int bus, int device, int pin)
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)) && !already) {
if (!already && bios32(&args, PCIbios.ventry, GSEL(GCODE_SEL, SEL_KPL))) {
/*
* XXX if it fails, we should try to smack the router
* hardware directly.