From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: CF flash PATA on libata failure to attach Date: Fri, 29 Jun 2007 10:36:48 +0900 Message-ID: <46846230.6080908@gmail.com> References: <11172839.post@talk.nabble.com> <46766BD3.4040702@gmail.com> <20070618125742.28a0bc57@the-village.bc.nu> <46770edc.101d640a.4fdf.4eae@mx.google.com> <46776306.5030300@gmail.com> <4679cefc.06d7720a.0280.ffff9cce@mx.google.com> <4679EA43.4040002@gmail.com> <467a2692.17bb720a.5a14.ffffa80c@mx.google.com> <467A8F17.1080608@rtr.ca> <4680d387.24528c0a.3634.69bd@mx.google.com> <46815FF4.9040001@rtr.ca> <4681e04b.22b38c0a.78ec.6f76@mx.google.com> <46826F42.70405@rtr.ca> <4682f7a3.15538c0a.2e12.ffff8676@mx.google.com> <4683F1C9.2060505@rtr.ca> <468453f8.13578c0a.3c99.ffffa514@mx.google.com> <46845BEE.90801@rtr.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from nz-out-0506.google.com ([64.233.162.224]:23204 "EHLO nz-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757127AbXF2Bgy (ORCPT ); Thu, 28 Jun 2007 21:36:54 -0400 Received: by nz-out-0506.google.com with SMTP id s18so299041nze for ; Thu, 28 Jun 2007 18:36:53 -0700 (PDT) In-Reply-To: <46845BEE.90801@rtr.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mark Lord Cc: Andrew Hall , linux-ide@vger.kernel.org, Alan Cox Hello, Mark Lord wrote: > Here's a slightly modified hack, which should leave your SATA > drive working as well as the CF card. > > Tejun / Alan : do we really want to continue attempting mdma2 > on a modern chipset such as ICH8 ??? One thing that worries me is that we have reports where the IDE piix can do mwdma but ata_piix can't. I wonder whether Andrew is hitting the same problem. > The best mdma2 can do is the same throughput as pio4, > and the bus occupancy is so high for mdma2 that it really > probably isn't worthwhile -- only CF cards seem to use it > in modern systems anyway. There also seem to be devices which claim to support mwdma2 but pukes when actual commands are given. Do we know whether the other os uses mwdma mode? -- tejun