From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by oss.sgi.com (8.11.2/8.11.3) id g0MKxbp30198 for linux-mips-outgoing; Tue, 22 Jan 2002 12:59:37 -0800 Received: from [64.152.86.3] (unknown.Level3.net [64.152.86.3] (may be forged)) by oss.sgi.com (8.11.2/8.11.3) with SMTP id g0MKxZP30195 for ; Tue, 22 Jan 2002 12:59:35 -0800 Received: from mail.esstech.com by [64.152.86.3] via smtpd (for oss.sgi.com [216.32.174.27]) with SMTP; 22 Jan 2002 20:02:38 UT Received: from venus (venus.esstech.com [193.5.205.5]) by mail.esstech.com (8.11.6/8.11.6) with SMTP id g0MJvVW23530; Tue, 22 Jan 2002 11:57:31 -0800 (PST) Received: from bud.austin.esstech.com by venus (SMI-8.6/SMI-SVR4) id LAA17118; Tue, 22 Jan 2002 11:58:53 -0800 Received: from esstech.com by bud.austin.esstech.com (SMI-8.6/SMI-SVR4) id NAA23910; Tue, 22 Jan 2002 13:52:53 -0600 Message-ID: <3C4DC5A1.3080105@esstech.com> Date: Tue, 22 Jan 2002 14:03:45 -0600 From: Gerald Champagne User-Agent: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:0.9.6) Gecko/20011120 X-Accept-Language: en-us MIME-Version: 1.0 To: Jun Sun , linux-mips@oss.sgi.com Subject: Re: ide dma in latest cvs References: <3C4CA8C8.5010801@esstech.com> <3C4DB6DA.7F3E7386@mvista.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mips@oss.sgi.com Precedence: bulk > Did you check what the address is and why it is zero? It seems to me this > might be key ... I see what the address is and why it's set to zero. The address is the address of a block of data to be transferred using dma, and it's set to zero because the new interface in blk_rq_map_sg() passes parameters in a page field instead an address field. It looks like this is part of the bio changes for 2.5 that work for x86 but haven't been updated for Mips. I figured that someone else must have run into this and it sounds like someone did. I'll try what Vivien Chappelier recommended in his response. Thanks. Gerald