FIQ Handler

FIQ Handler

[Matt Callow]

Hi,

I've been trying to install a FIQ handler for an omap 5910 board
(actually the amstrad E3) but I seem to get a data abort exception as
soon as I read the SIR_FIQ_CODE register.
I note in the omap source (arch/arm/mach-omap1/irq.c) it says  read the
mailing list threads on FIQ handlers if you are planning to add a FIQ
handler. So, I've looked through the archives but can only find a
reference to http://lkml.org/lkml/2005/6/22/111

Is there more information that I'm missing. If so, could someone point
me in the right direction please.

Matt

Re: FIQ Handler

[tony]

* Matt Callow <mc-lists@tesco.net> [060405 14:28]:
> Hi,
> 
> I've been trying to install a FIQ handler for an omap 5910 board
> (actually the amstrad E3) but I seem to get a data abort exception as
> soon as I read the SIR_FIQ_CODE register.
> I note in the omap source (arch/arm/mach-omap1/irq.c) it says  read the
> mailing list threads on FIQ handlers if you are planning to add a FIQ
> handler. So, I've looked through the archives but can only find a
> reference to http://lkml.org/lkml/2005/6/22/111
> 
> Is there more information that I'm missing. If so, could someone point
> me in the right direction please.

Search linux-arm-kernel@lists.arm.linux.org.uk list for it. Also look at
the other FIQ handlers under arch/arm. It should not be hard to do.

Tony

Re: FIQ Handler

[Matt Callow]

tony@atomide.com wrote:

>
>
>Search linux-arm-kernel@lists.arm.linux.org.uk list for it. Also look at
>the other FIQ handlers under arch/arm. It should not be hard to do.
>
>  
>
Thanks for the pointers. There is some useful info in there.  I was
expecting there to be something special about FIQ on the omap platform,
hence the message in the source, but it seems not.
I've solved my original data abort problem now, which was due to some
hardware not being mapped where I thought it was.

Matt