From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: ASUS M2A-VM - AMD690G - SB600 Non-Raid-5 SATA - problem Date: Mon, 14 May 2007 11:10:09 +0200 Message-ID: <46482771.4080602@gmail.com> References: <20070513050522.88081.qmail@web52609.mail.re2.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from py-out-1112.google.com ([64.233.166.182]:52667 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755007AbXENJKT (ORCPT ); Mon, 14 May 2007 05:10:19 -0400 Received: by py-out-1112.google.com with SMTP id a29so1436646pyi for ; Mon, 14 May 2007 02:10:19 -0700 (PDT) In-Reply-To: <20070513050522.88081.qmail@web52609.mail.re2.yahoo.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Srihari Vijayaraghavan Cc: linux-ide@vger.kernel.org Srihari Vijayaraghavan wrote: > --- Tejun Heo wrote: >> Srihari Vijayaraghavan wrote: >>>> Oh well, that's the price you have to pay when you 1. have a device >>>> which can't access memory above 4G but 2. don't have IOMMU to do it for >>>> the device. If performance becomes problem, you can always get a >>>> not-so-expensive external controller which can do 64. > > Can the Skymaster S3132, based on Sil3132, > (http://umart.net/au/product_info.php?cPath=21_211&products_id=106108) do 64 > bit DMA on Linux? Yeah, sil3124/32 can do 64bit alright. > If so, I'm happy to buy that to isolate whether the current problem is limited > to SB600 SATA controller alone on AMD690G chipset. I'm too. Please let me know when you find out. :-P > It'd be nice if somebody from AMD/ATI could confirm the 64 bit DMA capability > of SB600 SATA controller. (I observe a few AMD/ATI folks have been submitting > a few patches on LKML lately, so who knows.) Maybe you can cc the ATI person here if you know the address. > PS: FWIW, SB600 with your ahci fix has been working fine for the past week. > Thank you for that. Great. -- tejun