From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: About forcing 32bit DMA patch for AMD690G(SB600) Date: Fri, 25 Jan 2008 14:50:06 +0900 Message-ID: <4799788E.1030600@gmail.com> References: <47992BA3.3070104@gmail.com> <76366b180801242019h382fd604vd1458dab8b64dd4c@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from rv-out-0910.google.com ([209.85.198.190]:40926 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751789AbYAYFuO (ORCPT ); Fri, 25 Jan 2008 00:50:14 -0500 Received: by rv-out-0910.google.com with SMTP id k20so567869rvb.1 for ; Thu, 24 Jan 2008 21:50:13 -0800 (PST) In-Reply-To: <76366b180801242019h382fd604vd1458dab8b64dd4c@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Andrew Paprocki Cc: Shane Huang , sriharivijayaraghavan@yahoo.com.au, linux-ide@vger.kernel.org Andrew Paprocki wrote: > I have an SB600/RS690 here with SATA drives connected. I haven't been > following this thread, but I can help test something if it would help. We're trying to determine whether SB600 ahci controller can do 64bit DMA or not. Srihari's couldn't but Shane's test result tells a different story. Do you have memory mapped over 4G (if you have 4G some of them will be over 4G, you can know this by looking at the e820 map printed during boot)? -- tejun