From owner-freebsd-hardware Mon Apr 20 13:22:20 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA06988 for freebsd-hardware-outgoing; Mon, 20 Apr 1998 13:22:20 -0700 (PDT) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from dyson.iquest.net (dyson.iquest.net [198.70.144.127]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA06767 for ; Mon, 20 Apr 1998 20:21:21 GMT (envelope-from toor@dyson.iquest.net) Received: (from root@localhost) by dyson.iquest.net (8.8.8/8.8.8) id PAA03068; Mon, 20 Apr 1998 15:20:32 -0500 (EST) (envelope-from toor) From: "John S. Dyson" Message-Id: <199804202020.PAA03068@dyson.iquest.net> Subject: Re: best wdc0 flags ? In-Reply-To: <199804202010.NAA01631@dingo.cdrom.com> from Mike Smith at "Apr 20, 98 01:10:23 pm" To: mike@smith.net.au (Mike Smith) Date: Mon, 20 Apr 1998 15:20:32 -0500 (EST) Cc: kpielorz@tdx.co.uk, mike@smith.net.au, hardware@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > > Mike Smith wrote: > > > > > > The natoma apparently pushes the timing to the limit, and crappy > > > > drives can't keep up (btw all my Maxtors works just fine)... > > > > > > If we can confirm this, then it would be wise to add a quirk entry for > > > the Quantums, and go forward with the 32-bit transfer as default. > > > > Thus far they are working OK under 3.0-CURRENT (as of 15th(ish) of April) - > > and I'm using "flags 0xa0ffa0ff", which I beleive is bus-mastering 32 bit > > "max. multisector" the drive will negotiate for... > > Using DMA avoids the whole 32-bit-transfer issue. (No programmed I/O) > Oh, that's right. The multi-block mode ends up being superfluous also. John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message