Subject: Re: Question on MPC83xx interrupts

From: André Schwarz <[email-masked]>
Date: Wed, 23 Apr 2008 09:54:48 +0200

Michael Ellerman schrieb:
> On Tue, 2008-04-22 at 12:23 -0500, Scott Wood wrote:
>> On Tue, Apr 22, 2008 at 06:58:33PM +0200, Andre Schwarz wrote:
>>> I wonder if the IRQ number should match the vector of the datasheet ... 
>>> giving :
>> No.  The numbers in /proc/interrupts are virtual IRQ numbers, which are a
>> purely Linux-internal construct.
> 
> You can see the mapping between virq and hwirq numbers by turning on
> CONFIG_VIRQ_DEBUG and looking in /sys/kernel/debug/powerpc/virq_mapping
> (after mounting debugfs).
> 
> cheers
> 

Ahhh - thanks Michael !

very useful ...

Cheers,
André

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