From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 07 Mar 2006 03:40:49 +0000 (GMT) Received: from sorrow.cyrius.com ([65.19.161.204]:12548 "EHLO sorrow.cyrius.com") by ftp.linux-mips.org with ESMTP id S8133566AbWCGDkk (ORCPT ); Tue, 7 Mar 2006 03:40:40 +0000 Received: by sorrow.cyrius.com (Postfix, from userid 10) id 626AD64D3D; Tue, 7 Mar 2006 03:49:01 +0000 (UTC) Received: by unjust.cyrius.com (Postfix, from userid 1000) id 9C2C83EB2A; Tue, 7 Mar 2006 03:48:51 +0000 (GMT) Resent-From: tbm@cyrius.com Resent-Date: Tue, 7 Mar 2006 03:48:51 +0000 Resent-Message-ID: <20060307034851.GB29936@unjust.cyrius.com> Resent-To: linux-mips@linux-mips.org Date: Mon, 6 Mar 2006 22:51:31 +0000 From: Martin Michlmayr To: netdev@vger.kernel.org, linux-mips@linux-mips.org Subject: Re: [PATCH, RESEND] Add MWI workaround for Tulip DC21143 Message-ID: <20060306225131.GA23327@unjust.cyrius.com> References: <20060129230816.GD4094@colonel-panic.org> <20060218220851.GA1601@colonel-panic.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060218220851.GA1601@colonel-panic.org> User-Agent: Mutt/1.5.9i Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 10740 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: tbm@cyrius.com Precedence: bulk X-list: linux-mips * Peter Horton [2006-02-18 22:08]: > This patch works around the MWI bug on the DC21143 rev 65 Tulip by > ensuring that the receive buffers don't end on a cache line boundary (as > documented in the errata). > > This patch is required for the MIPs based Cobalt Qube/RaQ as supporting > the extra PCI commands seems to reduce the chance of a hard lockup > between the Tulip and the PCI bridge. Does anyone have comments regarding this patch? I received confirmation from a number of Debian users that this patch significantly improves the lockup situation on Cobalt, so it would be nice if it could go in. -- Martin Michlmayr tbm@cyrius.com