From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 28 May 2010 18:27:29 +0200 (CEST) Received: from h5.dl5rb.org.uk ([81.2.74.5]:48805 "EHLO h5.dl5rb.org.uk" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S1491896Ab0E1Q10 (ORCPT ); Fri, 28 May 2010 18:27:26 +0200 Received: from h5.dl5rb.org.uk (localhost.localdomain [127.0.0.1]) by h5.dl5rb.org.uk (8.14.3/8.14.3) with ESMTP id o4SGRNvv012425; Fri, 28 May 2010 17:27:25 +0100 Received: (from ralf@localhost) by h5.dl5rb.org.uk (8.14.3/8.14.3/Submit) id o4SGRMBp012423; Fri, 28 May 2010 17:27:22 +0100 Date: Fri, 28 May 2010 17:27:22 +0100 From: Ralf Baechle To: "Anoop P.A." Cc: linux-mips Subject: Re: TITAN GE driver Message-ID: <20100528162722.GB7148@linux-mips.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-08-17) 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: 26903 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: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Thu, May 27, 2010 at 10:51:47PM -0700, Anoop P.A. wrote: > Any body used titan GE device with more than 512MB physical memory? > > > > If buffer is getting allocated above physical address 0x1fff_ffff ( ie. > 30 bit buffer address) we may have to consider setting XDMA_BUFFADDRPRE > (0x5018 ) .This is not taken care in original driver. Any body had luck > in enabling this prefix. I have tried enabling it and I could do flood > ping with out packet loss. However when I do mass data transfer kernel > getting panic. Further investigation showed kenel panics because DMA > copies data to wrong address (which is being used). The driver has not been used in ages so it's generally in a sad shape, doesn't even compile. I think nobody touched this driver seriously in 5 years, probably longer. So it's sort of expected to eat your cat or do other nasty stuff. Ralf