From owner-freebsd-current Mon Dec 27 13:13:58 1999 Delivered-To: freebsd-current@freebsd.org Received: from sabre.velocet.net (sabre.velocet.net [198.96.118.66]) by hub.freebsd.org (Postfix) with ESMTP id 3F41914CF1 for ; Mon, 27 Dec 1999 13:13:56 -0800 (PST) (envelope-from dgilbert@trooper.velocet.net) Received: from trooper.velocet.net (trooper.velocet.net [216.126.82.226]) by sabre.velocet.net (Postfix) with ESMTP id 9BF99137F69 for ; Mon, 27 Dec 1999 16:13:54 -0500 (EST) Received: (from dgilbert@localhost) by trooper.velocet.net (8.9.3/8.9.3) id QAA13084; Mon, 27 Dec 1999 16:13:48 -0500 (EST) (envelope-from dgilbert) From: David Gilbert MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14439.54923.884773.393442@trooper.velocet.net> Date: Mon, 27 Dec 1999 16:13:47 -0500 (EST) To: freebsd-current@freebsd.org Subject: How to de-select DMA to ad0? X-Mailer: VM 6.75 under 20.4 "Emerald" XEmacs Lucid Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG 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. (This is all on a kernel compiled from a cvsup this afternoon) Dave. -- ============================================================================ |David Gilbert, Velocet Communications. | Two things can only be | |Mail: dgilbert@velocet.net | equal if and only if they | |http://www.velocet.net/~dgilbert | are precisely opposite. | =========================================================GLO================ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message