How to find PCI APIC routing ?
Posted: Mon Jan 13, 2014 7:54 am
Hello,
My current APIC implementation requires me to write the correct IRQ to the Interrupt Line registers, for-each pci device.
For most devices i able to find the correct IRQ using the Interrupt Pin registers and Interrupt Route registers. (datasheet information) A de-compile of the DSDT table results in the same information.
But i'm stuck on finding out IRQ information for pci devices that are not listed in the chipset datasheet. When i check my decompiled DSDT table i can't find any reference to devices higher than pci bus 0. So for pci devices on bus 1 or higher, I end up checking all IRQ untill it works. Not exactly optimal ...
Can anyone explain how i can find the correct IRQ for such pci devices ?
Thanks in advance !
(i've attached my decompiled DSDT table, most of it is Gibberish to me. Maybe someone can see more than i could
)
My current APIC implementation requires me to write the correct IRQ to the Interrupt Line registers, for-each pci device.
For most devices i able to find the correct IRQ using the Interrupt Pin registers and Interrupt Route registers. (datasheet information) A de-compile of the DSDT table results in the same information.
But i'm stuck on finding out IRQ information for pci devices that are not listed in the chipset datasheet. When i check my decompiled DSDT table i can't find any reference to devices higher than pci bus 0. So for pci devices on bus 1 or higher, I end up checking all IRQ untill it works. Not exactly optimal ...
Can anyone explain how i can find the correct IRQ for such pci devices ?
Thanks in advance !
(i've attached my decompiled DSDT table, most of it is Gibberish to me. Maybe someone can see more than i could
)