From owner-freebsd-current@FreeBSD.ORG Thu Sep 9 14:54:51 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E20A416A4CE for ; Thu, 9 Sep 2004 14:54:51 +0000 (GMT) Received: from spider.deepcore.dk (cpe.atm2-0-53484.0x50a6c9a6.abnxx9.customer.tele.dk [80.166.201.166]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4808D43D41 for ; Thu, 9 Sep 2004 14:54:51 +0000 (GMT) (envelope-from sos@DeepCore.dk) Received: from [194.192.25.143] (laptop.deepcore.dk [194.192.25.143]) by spider.deepcore.dk (8.12.11/8.12.10) with ESMTP id i89Esoir038020; Thu, 9 Sep 2004 16:54:50 +0200 (CEST) (envelope-from sos@DeepCore.dk) Message-ID: <41406E8D.9040801@DeepCore.dk> Date: Thu, 09 Sep 2004 16:54:05 +0200 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= User-Agent: Mozilla Thunderbird 0.7.2 (X11/20040802) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Mark Daniel Reidel References: <413FE07E.2070302@mark.reidel.info> In-Reply-To: <413FE07E.2070302@mark.reidel.info> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable cc: current@freebsd.org Subject: Re: DMA-aware drive runs at PIO since upgrading to 5.3beta X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Sep 2004 14:54:52 -0000 Mark Daniel Reidel wrote: > Hi there! >=20 > Since I upgraded from a current as of end of July to 5.3 beta2, I=20 > noticed, that by CDRW now runs on PIO4 which is quite annoying, since i= t=20 > was running on WDMA perfectly well before :o( My other drive, a DVD is = > detected fine, here's the dmesg snip: > Any idea why it's doing this? My other PC at work has a CDROM which is = > also now run on PIO4 instead of DMA since the upgrade, so I guess it's = > nothing specific to my hardware since I have an Athlon and a P4 at work= =2E > Any help would be appreciated, because burning at PIO4 is not what I'd = > like to to from now on as you can imagine ;o) We have changed the default to be DMA enabled on ATAPI devices. However=20 for that to have a chance to work I changed the logic so we only enable=20 DMA on UDMA33 capable ATAPI devices. This is because *lots* of old ATAPI = device claim DMA but cant, only ollowing UDMA33 sorts out most if not=20 all those buggy devices. Now if you want DMA on your drive, just use atacontrol to set the mode=20 you want. -S=F8ren