PCI->APIC IRQ transform -> 267 ?

PCI->APIC IRQ transform -> 267 ?

[Robert Clark]

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I'm getting this with 2.4.27 (SMP):

PCI: Using IRQ router PIIX [8086/25a1] at 00:1f.0
PCI->APIC IRQ transform: (B0,I29,P0) -> 16
PCI->APIC IRQ transform: (B0,I29,P1) -> 19
PCI->APIC IRQ transform: (B0,I29,P3) -> 23
PCI->APIC IRQ transform: (B0,I31,P0) -> 18
PCI->APIC IRQ transform: (B0,I31,P0) -> 18
PCI->APIC IRQ transform: (B0,I31,P1) -> 17
PCI->APIC IRQ transform: (B2,I4,P0) -> 27
PCI->APIC IRQ transform: (B3,I4,P0) -> 267
PCI->APIC IRQ transform: (B3,I5,P0) -> 25
PCI->APIC IRQ transform: (B4,I4,P0) -> 267
PCI->APIC IRQ transform: (B4,I4,P1) -> 267
PCI->APIC IRQ transform: (B4,I6,P0) -> 26
PCI->APIC IRQ transform: (B4,I6,P1) -> 27
PCI->APIC IRQ transform: (B5,I9,P0) -> 17
PCI->APIC IRQ transform: (B5,I10,P0) -> 19

  The devices which are being assigned 267 are Ethernet ports and return
error SIOCSIFFLAGS when I try and configure them with ifconfig. Devices
(B4,I6,P0) & (B4,I6,P1) (also Ethernet ports) can be configured with
ifconfig but don't receive any interrupts (according to
/proc/interrupts) and don't work. Devices (B5,I10,P0) & (B3,I5,P0) (more
Ethernet ports) work fine.

  I've tried various combinations of ACPI, APIC & hyperthreading
disabled & enabled but without any luck and I've run out of ideas for
debugging this. Can anyone help?

  The board is a Supermicro P4SCT+II with a 3.2GHz P4 (with
hyperthreading). The devices which are being affected are both PCI-X
Ethernet cards:

Intel PRO/1000MT 4-port Ethernet card (PCI-ID 8086:101D Rev 1)
Intel PRO/100S   2-port Ethernet card (PCI-ID 8086:1229 Rev D)

  I've attached some dmesg info and an lspci -v.

	Robert

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[-- Attachment #3: lspci --]
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Re: PCI->APIC IRQ transform -> 267 ?

[Len Brown]

On Thu, 2004-10-28 at 06:11, Robert Clark wrote:
> I'm getting this with 2.4.27 (SMP):
> 
> PCI: Using IRQ router PIIX [8086/25a1] at 00:1f.0
...
> PCI->APIC IRQ transform: (B3,I4,P0) -> 267

this is from pcibios_fixup_irqs() which is called only when ACPI is
disabled.  Let me know if you still have trouble with a kernel built
with CONFIG_ACPI=y.  Also, it would be good to know if other versions of
the kernel are known to work, or if they all fail on this box.

thanks,
-Len

Re: PCI->APIC IRQ transform -> 267 ?

[Robert Clark]

On Sun, 2004-10-31 at 05:08, Len Brown wrote:

> On Thu, 2004-10-28 at 06:11, Robert Clark wrote:

> > I'm getting this with 2.4.27 (SMP):
> > 
> > PCI: Using IRQ router PIIX [8086/25a1] at 00:1f.0
> ...
> > PCI->APIC IRQ transform: (B3,I4,P0) -> 267
> 
> this is from pcibios_fixup_irqs() which is called only when ACPI is
> disabled.  Let me know if you still have trouble with a kernel built
> with CONFIG_ACPI=y.  Also, it would be good to know if other versions of
> the kernel are known to work, or if they all fail on this box.

  Thanks - that sheds some light on things. I've had some success with
2.6.8 and thought it was a problem with the 2.4 series, but I've now
recompiled 2.4.27 with CONFIG_ACPI and it does work.

  Am I right in thinking that without CONFIG_ACPI, 2.4.27 simply trusts
the BIOS to set up ACPI? If so, I should talk to Supermicro as it sounds
like it might be a BIOS problem.

	Thanks,

		Robert