From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Richard Cochran <richardcochran@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Stuck MSI in normal Linux driver
Date: Wed, 02 Mar 2011 16:38:58 +0100 [thread overview]
Message-ID: <4D6E6492.6010001@domain.hid> (raw)
In-Reply-To: <20110302153411.GB14557@domain.hid>
Richard Cochran wrote:
> On Wed, Mar 02, 2011 at 04:26:46PM +0100, Gilles Chanteperdrix wrote:
>> Richard Cochran wrote:
>>> If so, where/how can I start to get working on fixing it?
>>>
>>> (I don't need the MSI in a rtdm or adeos context.)
>> Given that the problem is that the interrupt controller ack/mask
>> functions (if I recall correctly) need, on x86, to use some Linux
>> primitives which can not be called from Xenomai domain, I am not sure it
>> is easy to fix. And the fact that you do not need the MSI in Xenomai
>> domain does not change anything, since ack/mask routines are called
>> ahead of the pipeline anyway.
>
> Okay, but how about on PowerPC, can I get to work there?
I do not think powerpc has the same issue. Check that you do not have an
edge/level issue (MSI are edge triggered I think).
--
Gilles.
next prev parent reply other threads:[~2011-03-02 15:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-02 15:16 [Xenomai-help] Stuck MSI in normal Linux driver Richard Cochran
2011-03-02 15:26 ` Gilles Chanteperdrix
2011-03-02 15:34 ` Richard Cochran
2011-03-02 15:38 ` Gilles Chanteperdrix [this message]
2011-03-02 18:18 ` Jan Kiszka
2011-03-03 7:21 ` Richard Cochran
2011-03-03 7:32 ` Philippe Gerum
2011-03-03 12:25 ` Wolfgang Grandegger
2011-03-03 12:30 ` Jan Kiszka
2011-03-03 12:54 ` Philippe Gerum
2011-03-03 23:45 ` Jan Kiszka
2011-03-04 7:51 ` Philippe Gerum
2011-03-04 8:09 ` Jan Kiszka
2011-03-04 8:30 ` Richard Cochran
2011-03-04 8:36 ` Jan Kiszka
2011-03-04 8:11 ` Richard Cochran
2011-03-04 8:16 ` Jan Kiszka
2011-03-07 9:26 ` Richard Cochran
2011-03-07 16:37 ` Philippe Gerum
2011-03-07 18:33 ` Richard Cochran
2011-03-08 7:55 ` Richard Cochran
2011-03-07 18:39 ` Gilles Chanteperdrix
2011-03-07 21:47 ` Philippe Gerum
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