From owner-freebsd-current@FreeBSD.ORG  Wed Sep 24 16:20:57 2003
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Date: Wed, 24 Sep 2003 19:20:52 -0400 (EDT)
From: Bryan Liesner <bleez@comcast.net>
To: Thomas Quinot <thomas@FreeBSD.ORG>
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cc: freebsd-current@FreeBSD.ORG
cc: Bryan Liesner <bleez@comcast.net>
Subject: Re: acd0 vs cd0 (ATAPICAM)
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On Wed, 24 Sep 2003, Thomas Quinot wrote:

> Le 2003-09-19, Guillaume =E9crivait :
>
> > Thanks for the patch. cd0 is faster now and ATAPICAM works great.
> > Are you going to commit the patch?
>
> DMA is now enabled for ATAPI/CAM i/o, as of atapi-cam.c rev. 1.26.
> Thanks to all who tested and reviewed the change.
>

No, thank you!  dd'ing a full data CD before this fix had top showing
at least 50% of the CPU time in interrupt - it's now down to the usual
5% or less.

-Bryan