Re: IRQ routing debugging help

On Mon, 5 Jan 2004, M. Warner Losh wrote:

> : So whats the next step?
>
> Are you set for fresh goat entrails?  How about Eye of Newt? :-)

I've got the rubber gloves and bleach handy :)

> The next step is to find the $PIR table.  This will give you one set
> of information.  Here's a sample PIR table, the format may be a little
> different than what I've presented here:

How do you find this? This system doesn't appear to have one; it doesn't
show up in boot -v with either SMP or UP kernels, with or without apic.

> If an interrupt works under non-ACPI, then you can use something like
> hw.acpi.pci.link.%d.%d.%d.irq to route it.  First %d busno, then %d
> slot and the last %d is pin.  A is 0, B is 1, etc.  If non-ACPI works,
> then you you can power through things by doing something like
>
> 	hw.acpi.pci.link.2.12.0.irq=11
> 	hw.acpi.pci.link.2.15.0.irq=5

I guess I have a bad example. The affected component on this system, the
keyboard, is an ISA interrupt.

Comparing ACPI and non-ACPI boots, the main difference is in the final
apic programming. In Non-ACPI, it looks like this:

ioapic1: routing intpin 2 (IRQ 18) to cluster 0
ioapic1: routing intpin 8 (IRQ 24) to cluster 0
ioapic1: routing intpin 9 (IRQ 25) to cluster 0
ioapic0: routing intpin 1 (IRQ 1) to cluster 0
ioapic0: routing intpin 4 (IRQ 4) to cluster 0
ioapic0: routing intpin 6 (IRQ 6) to cluster 0
ioapic0: routing intpin 8 (IRQ 8) to cluster 0
ioapic0: routing intpin 11 (IRQ 11) to cluster 0
ioapic0: routing intpin 13 (IRQ 13) to cluster 0
ioapic0: routing intpin 14 (IRQ 14) to cluster 0
ioapic0: routing intpin 15 (IRQ 15) to cluster 0

In ACPI, the intpin 1 line is missing:
ioapic1: routing intpin 2 (IRQ 18) to cluster 0
ioapic1: routing intpin 8 (IRQ 24) to cluster 0
ioapic1: routing intpin 9 (IRQ 25) to cluster 0
ioapic0: routing intpin 4 (IRQ 4) to cluster 0
ioapic0: routing intpin 6 (IRQ 6) to cluster 0
ioapic0: routing intpin 7 (IRQ 7) to cluster 0
ioapic0: routing intpin 8 (IRQ 8) to cluster 0
ioapic0: routing intpin 11 (IRQ 11) to cluster 0
ioapic0: routing intpin 13 (IRQ 13) to cluster 0
ioapic0: routing intpin 14 (IRQ 14) to cluster 0
ioapic0: routing intpin 15 (IRQ 15) to cluster 0

So there's something specifically funky with IRQ 1 in the ACPI case.
I'll extract the DSDT and take a poke around.

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite_at_gumbysoft.com          |  www.FreeBSD.org