Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755239Ab0BXDxI (ORCPT ); Tue, 23 Feb 2010 22:53:08 -0500 Received: from snt0-omc1-s35.snt0.hotmail.com ([65.55.90.46]:53408 "EHLO snt0-omc1-s35.snt0.hotmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755201Ab0BXDxG convert rfc822-to-8bit (ORCPT ); Tue, 23 Feb 2010 22:53:06 -0500 Message-ID: X-Originating-IP: [96.253.143.208] From: Yuhong Bao To: , , CC: , , Subject: SB600 64-bit DMA BIOS misconfiguration (formerly RE: [PATCH 2.6.34] ehci-hcd: add option to enable 64-bit DMA support) Date: Tue, 23 Feb 2010 19:53:05 -0800 Importance: Normal In-Reply-To: <51f3faa71002172113o65a85ed6y5fa39d0b3a96f7ce@mail.gmail.com> References: <4B7CAF95.6020306@gmail.com> <20100218042626.GB11649@kroah.com>,<51f3faa71002172113o65a85ed6y5fa39d0b3a96f7ce@mail.gmail.com> Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT MIME-Version: 1.0 X-OriginalArrivalTime: 24 Feb 2010 03:53:05.0311 (UTC) FILETIME=[DEA19AF0:01CAB504] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 982 Lines: 16 > it doesn't work. Based on the libata experience with AHCI which has a > similar 64-bit feature flag, there are some controllers that didn't do > it properly, but not many (only ATI SB600 it appears, and only on > certain boards, as it seems it was a BIOS configuration issue). It seems it was solved by a DMI whitelist, but if it is a BIOS configuration issue, I think it would be better if it could be detected directly instead by reading the configuration directly from the device and correcting it if possible. Is that possible? Yuhong Bao _________________________________________________________________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/201469229/direct/01/-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/