From owner-freebsd-drivers@FreeBSD.ORG Fri Dec 28 19:56:17 2007 Return-Path: Delivered-To: freebsd-drivers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 67B3F16A419 for ; Fri, 28 Dec 2007 19:56:17 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from speedfactory.net (mail6.speedfactory.net [66.23.216.219]) by mx1.freebsd.org (Postfix) with ESMTP id 0318713C44B for ; Fri, 28 Dec 2007 19:56:16 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (unverified [66.23.211.162]) by speedfactory.net (SurgeMail 3.8q) with ESMTP id 226422930-1834499 for multiple; Fri, 28 Dec 2007 14:42:08 -0500 Received: from localhost.corp.yahoo.com (john@localhost [127.0.0.1]) (authenticated bits=0) by server.baldwin.cx (8.13.8/8.13.8) with ESMTP id lBSJdg7H064138; Fri, 28 Dec 2007 14:39:48 -0500 (EST) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-drivers@freebsd.org Date: Fri, 28 Dec 2007 13:04:47 -0500 User-Agent: KMail/1.9.6 References: <8103ad500712270516l5db13e1ao388835d01fd19fc3@mail.gmail.com> In-Reply-To: <8103ad500712270516l5db13e1ao388835d01fd19fc3@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200712281304.47922.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [127.0.0.1]); Fri, 28 Dec 2007 14:39:49 -0500 (EST) X-Virus-Scanned: ClamAV 0.91.2/5278/Fri Dec 28 11:55:36 2007 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: Subject: Re: PEX 8111 PCI-Express to PCI Bridge and FreeBSD X-BeenThere: freebsd-drivers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Writing device drivers for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Dec 2007 19:56:17 -0000 On Thursday 27 December 2007 08:16:59 am Konstantin Dimitrov wrote: > hello All, > > as far as i understand the documentation of the PEX 8111 PCI > Express-to-PCI Bridge, which is freely available here: > > http://www.plxtech.com/products/expresslane/pex8111.asp > > it is "Fully Transparent PCI Express to PCI Bridge", but under FreeBSD > it doesn't seem to behave as transparent, i.e. it doesn't seem to work > well with the standard FreeBSD PCI-PCI bridge driver, because it's not > possible to read/write from/to the PCI IC behind PEX 8111. Can you provide more detail on what you mean by read/write? Can you not do config space transactions to child devices of the bridge or can you not access mapped BARs of child devices or what exactly? -- John Baldwin