From owner-freebsd-current Tue Dec 28 12:57:28 1999 Delivered-To: freebsd-current@freebsd.org Received: from freebsd.dk (freebsd.dk [212.242.42.178]) by hub.freebsd.org (Postfix) with ESMTP id 3495B1551B for ; Tue, 28 Dec 1999 12:57:25 -0800 (PST) (envelope-from sos@freebsd.dk) Received: (from sos@localhost) by freebsd.dk (8.9.3/8.9.1) id VAA49015; Tue, 28 Dec 1999 21:55:41 +0100 (CET) (envelope-from sos) From: Soren Schmidt Message-Id: <199912282055.VAA49015@freebsd.dk> Subject: Re: How to de-select DMA to ad0? In-Reply-To: <14439.54923.884773.393442@trooper.velocet.net> from David Gilbert at "Dec 27, 1999 04:13:47 pm" To: dgilbert@velocet.ca (David Gilbert) Date: Tue, 28 Dec 1999 21:55:41 +0100 (CET) Cc: freebsd-current@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL54 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG It seems David Gilbert wrote: > I've had my share of problems with this drive's DMA abilities. I'm > convinced that it has none... even though it probes as such. > > ad0: ATA-0 disk at ata0 as master > ad0: ... > ad0: 16 secs/int, 1 depth queue, DMA > > now... when I boot -v, I don't have a chance to write down what it > says, but it will hang every time with the following output: > > ad0: ad-timeout: lost disk contact > ata0: resetting drives -- mask=03 status0=50 status1=50 .. > > And that's it. It never prints out "done" which I see in many of the > list messages. Is there a way of disabling DMA on a specific drive? > I read a bit of the source, but didn't find any obvious documentation > on the issue. There is no way (yet) other than hacking the code, but I'm working on it... -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message