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Date: Fri, 11 Nov 2005 13:02:47 +0900
From: Alexander Nedotsukov <bland@FreeBSD.org>
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Cc: freebsd-hackers@FreeBSD.org
Subject: Re: No interrupts coming to device driver.
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Hans Petter Selasky wrote:
> On Thursday 10 November 2005 09:50, Alexander Nedotsukov wrote:
>   
>> Hi,
>>
>> I trying to create small lirc (www.lirc.org) compatible CIR driver for
>> it8705 chip (sits on ISA bus). My problem is I can not get interrupts
>> coming to driver. I believe I configured chip (carrier freq. + baudrate
>> divisor) and enabled interrupt mode the same way it windows driver does.
>> It also seems to be correct according to chip specs. But nothing. vmstat
>> -i shows zeros for assigned irq. And my IRS stay cold. I wrote small
>> userland program which polls CIRs IIR (interrupt identefication
>> register) and it shows interrupt pending bit set on right after I press
>> key on remote control. Looks like I missed something fundamental. Does
>> anyone can give me a hint where to look?
>>
>>     
>
> Sounds like you have an unacknowledged interrupt. Does it help if you call the 
> interrupt handler once after that your chip has been reset and configured?
>   
Did you mean unacknowledged to chip or interrupt controller? Anyway 
calling interrupt handler right after initialization does not seem to help.
> Else sharing some of the source code might help.
>   
Here you are: http://bbnest.net/~bland/it87pub/

Alexander.