Connecting to "PCI command write" interrupt on 4xx platforms

Benjamin Herrenschmidt benh at kernel.crashing.org
Fri Oct 31 07:15:12 EST 2008


On Thu, 2008-10-30 at 11:58 +0100, Matthias Fuchs wrote:
> I need to connect to the "PCI command write" interrupt on a 440EPx
> platform. This is UIC0/int#5.
> 
> Where should I add this interrupt in the DT? To the PCI node? In this
> case it will collide with the 
> PCI interrupts.
> 
> My application is a 440EPx on a PCI addon card. So the PCI node is
> disabled in the DT.
> 
> Is there a way to get an interrupt number for request_irq() without
> querying the DT?

What is this interrupt precisely ? What emits it ? If it's coming from
the actual PCI bridge, then you can stick an interrupts property in the
PCI host bridge node in the DT just fine.

Cheers,
Ben.





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