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Date:      Tue, 21 Dec 1999 08:53:44 -0800 (PST)
From:      Doug White <dwhite@resnet.uoregon.edu>
To:        Soren Schmidt <sos@freebsd.dk>
Cc:        Theo van Klaveren <havoc@Cal30B054.student.utwente.nl>, freebsd-current@FreeBSD.ORG
Subject:   Re: Problems with the ATA-driver
Message-ID:  <Pine.BSF.4.21.9912210848170.5973-100000@resnet.uoregon.edu>
In-Reply-To: <199912211448.PAA82306@freebsd.dk>

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On Tue, 21 Dec 1999, Soren Schmidt wrote:

> > Harddisks: Western Digital Caviar (2.0 GB), non-DMA and
> >            Western Digital Caviar (2.5 GB), DMA-33.
> > Mainboard: Asus P5A-B Super7
> > Chipset: ALi Aladdin V AGPset
> 
> It probably because I relaxed the requirements for doing WDMA on disks
> that doesn't bother to tell whihc verson of the ATA spec they conform to.
> I think your case is the more seldom one, but I'm this close to
> blacklisting all WD/Maxtor drives, that would make life alot easier...

If you end up doing this, can you have the driver print a line letting 
people know this is intentional?  i.e., 

ad0: DMA disabled: This drive does not properly support DMA mode.
ad0: To force DMA for this drive (at your own risk) set flags 0xXX.

Doug White                    |  FreeBSD: The Power to Serve
dwhite@resnet.uoregon.edu     |  www.FreeBSD.org



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