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Date:      Mon, 21 Dec 1998 21:40:15 -0800
From:      Amancio Hasty <hasty@rah.star-gate.com>
To:        "Daniel O'Connor" <doconnor@gsoft.com.au>
Cc:        Kevin Van Maren <vanmaren@fast.cs.utah.edu>, freebsd-hackers@FreeBSD.ORG, mike@smith.net.au
Subject:   Re: PCI IRQ mappings 
Message-ID:  <199812220540.VAA65066@rah.star-gate.com>
In-Reply-To: Your message of "Tue, 22 Dec 1998 11:50:31 %2B1030." <XFMail.981222115031.doconnor@gsoft.com.au> 

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> 
> On 21-Dec-98 Kevin Van Maren wrote:
> 
> [ useful PCI IRQ info deleted ]
> >  If the hardware is broken, complain bitterly to the vendor.  If the
> >  driver is broken, complain bitterly to the driver writer.
> OK..
> 
> Next question, how do I write a driver that shares interrupts correctly? Just make sure
> it checks the cards IRQ register?

You have to check that your card has set the interrupt bit if not then return.
There is no PCI standard for specifying where can you check for interrupt
active in a PCI device.
	Amancio


	


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