From owner-freebsd-current Thu Mar 9 11:23:56 2000 Delivered-To: freebsd-current@freebsd.org Received: from freebsd.dk (freebsd.dk [212.242.42.178]) by hub.freebsd.org (Postfix) with ESMTP id 009F237B64D for ; Thu, 9 Mar 2000 11:23:52 -0800 (PST) (envelope-from sos@freebsd.dk) Received: (from sos@localhost) by freebsd.dk (8.9.3/8.9.1) id UAA20462; Thu, 9 Mar 2000 20:23:34 +0100 (CET) (envelope-from sos) From: Soren Schmidt Message-Id: <200003091923.UAA20462@freebsd.dk> Subject: Re: ata, DMA and the install floppies In-Reply-To: <200003091901.VAA99897@zibbi.mikom.csir.co.za> from John Hay at "Mar 9, 2000 09:01:31 pm" To: jhay@mikom.csir.co.za (John Hay) Date: Thu, 9 Mar 2000 20:23:33 +0100 (CET) Cc: freebsd-current@FreeBSD.ORG (FreeBSD-current) 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 John Hay wrote: > Hi, > > I have been trying to install yesterday's 4.0 snap on a no-name brand > motherboard with the VIA chipset, but I'm running in some problems. I > suspect there is a problem with the DMA. The error I'm getting when the > disk is newfs'ed is a repeating: > > ad0: WRITE command timeout - resetting > ata0: resetting devices .. done > ad0: WRITE command timeout - resetting > ata0: resetting devices .. done > ... > > It seems that it is just going on and on. Shouldn't it back down to non > DMA mode after a while? Is there a way to disable the DMA on the install > floppies? It should back down after 3 retries... But is is 3 retries pr request, so say it gets through on the 2 retry each time this will continue.. I dont know if there is access to the sysctl knobs from the emergency shell, but that would be a solution... > Part of the probe looks like this: (written down by hand) > > atapci0: port 0xe000 - 0xe00f at device 7.1 on pci0 > ata0: at 0x1f0 irq 14 on atapci0 > ... > ad0: 6204MB [13446/15/63] at ata0-master using UDMA33 Hmm, wierd, did this hardware run FreeBSD before ?? -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message