From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Subject: Re: [PATCH #upstraem-fixes] ata_piix: detect and clear spurious IRQs
Date: Wed, 26 Nov 2008 15:28:35 +0300
Message-ID: <492D40F3.5000506@ru.mvista.com>
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Tejun Heo <tj@kernel.org>, Jeff Garzik <jeff@garzik.org>, IDE/ATA development list <linux-ide@vger.kernel.org>

Hello.

Alan Cox wrote:

>> All BMDMA controllers I know about are sata_sil (already has private
>> irq handler) and ata_piix (this patch).  Alan, how do other
>> controllers do it?
>>     
>
> CMD chipsets do a register read .. from PCI config space (gak)
>   

   The late chips do have the alternate interrupt latch bits in I/O 
space (at BMIDE base + 3).

MBR, Sergei