From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: CF as IDE on ICH6M using libata Date: Fri, 07 Sep 2007 02:50:46 +0900 Message-ID: <46E03DF6.8090405@gmail.com> References: <6f9550040709020542h530f0bfap5b01fb4ff0c00f25@mail.gmail.com> <46DAB5DD.80807@gmail.com> <46DEE72B.2060702@rtr.ca> <6f9550040709051503k5b0a07b1x3e21bae3667ce17@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from wa-out-1112.google.com ([209.85.146.176]:58480 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755198AbXIFRwL (ORCPT ); Thu, 6 Sep 2007 13:52:11 -0400 Received: by wa-out-1112.google.com with SMTP id v27so255533wah for ; Thu, 06 Sep 2007 10:52:11 -0700 (PDT) In-Reply-To: <6f9550040709051503k5b0a07b1x3e21bae3667ce17@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Eddie Hung Cc: Mark Lord , linux-ide@vger.kernel.org Eddie Hung wrote: > However, I think we can conclude that ICH6M (which on the X41, has a > SATA-PATA bridge to connect a PATA drive) does not seem to support > MWDMA It isn't clear whether the fault is at the driver or the CF device. > (especially as it is not completely supported under Windows > either - it is *incredibly* slow but does not give the same timeout > problems as with libata), Please verify which mode is in use in Windows. Just watching cpu usage in the task manager while transferring data should give you a pretty good idea. > nor does libata it drop down gracefully to > PIO4 when it detects these timeouts. Yeah, this is a bug to fix. Thanks. -- tejun