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Subject: Re: Question on MPC83xx interrupts
From: Michael Ellerman <michael@ellerman.id.au>
To: Scott Wood <scottwood@freescale.com>
In-Reply-To: <20080422172306.GA17992@ld0162-tx32.am.freescale.net>
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Date: Wed, 23 Apr 2008 08:57:11 +1000
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Cc: Andre Schwarz <andre.schwarz@matrix-vision.de>,
	linux-ppc list <linuxppc-dev@ozlabs.org>
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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 ...=
=20
> > giving :
>=20
> 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

--=20
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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