Re: ACPI PCI routing problem

Andrew de Quincey
2003-07-11T11:43:34Z

On Friday 11 July 2003 11:14, Ducrot Bruno wrote:
> On Fri, Jul 11, 2003 at 12:22:29AM +0100, Andrew de Quincey wrote:
> > Hi, I have an Epox 8RDA+ NForce2-based motherboard (uniprocessor, Athlon
> > XP). This board has an IO-APIC with 0x17 pins. I can't tell you much more
> > specific about it, as it is in the nforce2 chipset to which I do not have
> > docs. I'm using kernel 2.5.74, with APIC, IO-APIC, ACPI turned on.
> >
> > First of all, here are the symptoms:
> >
> > Kernel boots OK, devices with IRQs <=15 are fine. However, the system
> > attempts to allocate some devices (e.g. USB) to IRQs 20 and 21, as told
> > by the AML code in my BIOS (more on this later).
>
> How look /proc/interrupts with IO-APIC, but without ACPI (I mean, no
> acpi at all at compile time)?

Hi, here you go. ACPI disabled, but APIC/IO-APIC left in. Interesting,
everything is set to XT-PIC....

During boot it says: Found and enabled local APIC!
But does not have any mention of the IO-APIC.

CPU0
0: 50946 XT-PIC timer
1: 16 XT-PIC i8042
2: 0 XT-PIC cascade
11: 13 XT-PIC ohci-hcd
12: 346 XT-PIC ohci-hcd
14: 1024 XT-PIC ide0
15: 18 XT-PIC ide1
NMI: 0
LOC: 50874
ERR: 91
MIS: 0