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To: Perttu Laine <plaine@gmail.com>
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From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
Date: 30 Mar 2005 10:52:40 -0500
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Subject: Re: ata driver.
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Perttu Laine <plaine@gmail.com> writes:

> On 30 Mar 2005 09:41:55 -0500, Lowell Gilbert 
> 
> > Try enabling DMA for ATA but *not* for ATAPI.
> 
> Don't help. Works only when ATA has DMA disabled.
> Writing to all drivers works with dma on. Reading causes timeouts.

Okay, sounds somewhat familiar.
That code is undergoing extensive development.
Soeren Schmidt has a set of patches for his latest set of upgrades,
but they're not going into the main tree quite yet. http://www.freebsd.dk/