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Date: Thu, 05 Feb 2009 16:54:45 +0100
From: Philippe Gerum <rpm@xenomai.org>
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Subject: Re: [Xenomai-help] IRQ reservation and config
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To: Mike McTernan <mmcternan@domain.hid>
Cc: xenomai@xenomai.org

Mike McTernan wrote:
> Hi,
> 
> Right - I want the interrupt to be handled in realtime.
> 
> Is there a way to configure the interrupt as level sensitive under
> Xenomai?  I can't see how to do it, hence the thought of using
> request_irq(), which can do that.
>

rtdm_irq_request() assumes that the platform-dependent code did set the
correct IRQ type/sense already.

> Regards,
> 
> Mike
> 
> -----Original Message-----
> From: Philippe Gerum [mailto:rpm@xenomai.org] 
> Sent: 03 February 2009 17:47
> To: Mike McTernan
> Cc: xenomai@xenomai.org
> Subject: Re: [Xenomai-help] IRQ reservation and config
> 
> Mike McTernan wrote:
>> Hi,
>>
>> I'm porting a simple driver to be under the Xenomai. RTDM  The driver
>> simply blocks on read calls until an interrupt arrives, and returns a
>> count.  This is on Blackfin uClinux.
>>
>> I think I've understood how to make the driver, the only thing I'm
>> missing is how to reserve and configure the irq source. 
>>
>> Should I be using the standard Linux request_irq() to do this in the
>> RTDM prior to calling rtdm_irq_request()?
>>
> 
> If you want your interrupt source to be controlled by the Xenomai core,
> i.e.
> with real-time guarantees, then rtdm_irq_request() is what you want. I
> guess
> this is why you need an RTDM driver anyway.
> 
>> Regards,
>>
>> Mike
>>
>> _______________________________________________
>> Xenomai-help mailing list
>> Xenomai-help@domain.hid
>> https://mail.gna.org/listinfo/xenomai-help
>>
> 
> 


-- 
Philippe.