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From: Dan Malek <dan@embeddededge.com>
To: Nate Pletcher <pletch@po.cwru.edu>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: using cpm interrupts on 8xx
Date: Wed, 22 May 2002 23:20:57 -0400	[thread overview]
Message-ID: <3CEC6019.8060700@embeddededge.com> (raw)
In-Reply-To: 1022079528.1226.15.camel@soundgarden


Nate Pletcher wrote:


> ...  Do I need to register a handler for the SIU
> interrupt for the CPM and then another handler for the individual IDMA
> interrupt from the CPM?

All you need to do is use cpm_install_handler() for the IDMA interrupt.

> The interrupt hardware on the 8xx is multilevel (CPM interrupts
> multiplexed into SIU) so it seems that both functions would be
> necessary.

The cpm initialization installs the SIU interrupt handler, so don't
worry about that one.

> ....  What do I need to do myself and what is
> provided by the request_/free_irq interface?

For your IDMA device all you need to do is cpm_install_handler()/cpm_free_handler().


	-- Dan


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

  reply	other threads:[~2002-05-23  3:20 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-05-22 14:58 using cpm interrupts on 8xx Nate Pletcher
2002-05-23  3:20 ` Dan Malek [this message]
     [not found] <20020522162110.447DF1196F@denx.denx.de>
2002-05-23 19:01 ` Nate Pletcher
2002-05-23 19:09   ` Tom Rini

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