Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755650AbZCTUdb (ORCPT ); Fri, 20 Mar 2009 16:33:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752658AbZCTUdV (ORCPT ); Fri, 20 Mar 2009 16:33:21 -0400 Received: from mail.lang.hm ([64.81.33.126]:43103 "EHLO bifrost.lang.hm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751880AbZCTUdV (ORCPT ); Fri, 20 Mar 2009 16:33:21 -0400 Date: Fri, 20 Mar 2009 13:32:44 -0700 (PDT) From: david@lang.hm X-X-Sender: dlang@asgard.lang.hm To: Alan Cox cc: =?ISO-8859-15?Q?Daniel_Kr=FCger?= , Robert Schwebel , Greg KH , linux-kernel@vger.kernel.org, Michael Olbrich , Wolfram Sang , Marc Kleine-Budde , Thomas Gleixner Subject: Re: The Linux Staging tree, what it is and is not. In-Reply-To: <20090320153713.65bf8e2d@lxorguk.ukuu.org.uk> Message-ID: References: <20090318183232.GA11594@kroah.com> <20090320005808.GM5367@pengutronix.de> <20090320100146.6599f671@lxorguk.ukuu.org.uk> <20090320103545.GQ5367@pengutronix.de> <20090320105556.4375176d@lxorguk.ukuu.org.uk> <20090320111552.GS5367@pengutronix.de> <49C3B33F.1020905@systec-electronic.com> <20090320153713.65bf8e2d@lxorguk.ukuu.org.uk> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 954 Lines: 22 On Fri, 20 Mar 2009, Alan Cox wrote: >> information of what to copy to where comes from the object dictionary. >> But it is possible to extract this information from the objdict and pass >> it via generic structures (e.g. something like IO vectors) to the PDO >> module in kernel. The information flow of the configuration data is >> one-way only, from userspace to kernel. This is what I plan to implement >> in openPOWERLINK, because the copy information can also be passed to a >> special hardware like a DMA controller. > > Ok so your hardware in fact really is oriented around an mmap type > interface ? what I understand from this thread is that the hardware is a standard ethernet card. David Lang -- 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/