Date: Wed, 12 May 1999 23:45:50 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: "Jordan K. Hubbard" <jkh@zippy.cdrom.com> Cc: Soren Schmidt <sos@freebsd.dk>, des@yes.no (Dag-Erling Smorgrav), current@FreeBSD.ORG Subject: Re: DMA problems with IBM DeskStar drive Message-ID: <7255.926545550@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 12 May 1999 14:27:53 PDT." <65947.926544473@zippy.cdrom.com>
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In message <65947.926544473@zippy.cdrom.com>, "Jordan K. Hubbard" writes: >> Try disabling "ultra DMA" in the BIOS, that seems to have worked for >> me on my IBM-DJNA-371800 drive. >> >> (Jordan: We may want to put something in the README about this in 3.2!) > >I'd welcome suggestions as to what the text should look like; I'm >still unclear as to what exactly the problem us. :) So am I. I think the problem is that the wd.c based DMA stuff doesn't support ultra-DMA, and unless you tell your BIOS to no do ultra-DMA it will barf up a printf for each transfer to the device. How to write things like this in a README file has repeatedly been proven to be beyond my capabilities. -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." FreeBSD -- It will take a long time before progress goes too far! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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