Subject: Re: PCI interrupt assignment on sequoia board

From: Stefan Roese <[email-masked]>
Date: Wed, 9 Jan 2008 17:04:23 +0100

Hi Matthias,

On Wednesday 09 January 2008, Matthias Fuchs wrote:
> I noticed that Josh's 'for-2.5.25' does not assign PCI interrupts
> correctly:
>
> bash-3.00# lspci -v
> 00:00.0 Class 0680: 1014:027f
>         Subsystem: 10e8:cafe
>         Flags: bus master, medium devsel, latency 0, IRQ 16
>         Memory at <unassigned> (32-bit, prefetchable)
>         Capabilities: [58] Power Management version 2
>
> 00:0a.0 Class 0b20: 1014:027f	(this is a PPC440EPx PCI target board in a
> sequoia PCI slot) Subsystem: 12fe:0441
>         Flags: bus master, medium devsel, latency 128, IRQ 16
>         Memory at 0000000180000000 (32-bit, prefetchable) [size=64M]
>         Memory at 0000000184000000 (32-bit, prefetchable) [size=16M]
>         Capabilities: [58] Power Management version 2
>
> 00:0c.0 Class 0200: 168c:0013 (rev 01)
>         Subsystem: 14b7:0a60
>         Flags: bus master, medium devsel, latency 128, IRQ 16
>         Memory at 0000000185000000 (32-bit, non-prefetchable) [size=64K]
>         Capabilities: [44] Power Management version 2
>
> bash-3.00# uname -a
> Linux sequoia 2.6.24-rc6-g78994e24 #5 Wed Jan 9 16:22:31 CET 2008 ppc ppc
> ppc GNU/Linux
>
>
> All interrupts are '16'. But I expected 67 as correctly stated in the
> device tree. This test has been made with the uboot wrapper code.

Those are virtual interrupt numbers. Yeah, that's confusing, I know.

The implementation should be correct.

Best regards,
Stefan

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