From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Michlmayr Subject: Re: [PATCH, RESEND] Add MWI workaround for Tulip DC21143 Date: Mon, 6 Mar 2006 22:51:31 +0000 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 Return-path: Resent-Message-ID: <20060307034851.GB29936@unjust.cyrius.com> To: netdev@vger.kernel.org, linux-mips@linux-mips.org Content-Disposition: inline In-Reply-To: <20060218220851.GA1601@colonel-panic.org> Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org List-Id: netdev.vger.kernel.org * 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