From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751327AbWANWMP (ORCPT ); Sat, 14 Jan 2006 17:12:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751331AbWANWMP (ORCPT ); Sat, 14 Jan 2006 17:12:15 -0500 Received: from xenotime.net ([66.160.160.81]:37819 "HELO xenotime.net") by vger.kernel.org with SMTP id S1751327AbWANWMO (ORCPT ); Sat, 14 Jan 2006 17:12:14 -0500 Date: Sat, 14 Jan 2006 14:12:10 -0800 From: "Randy.Dunlap" To: Stefan Richter Cc: linux1394-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: sbp2 address space Message-Id: <20060114141210.567eab77.rdunlap@xenotime.net> In-Reply-To: <43C2D899.2080302@s5r6.in-berlin.de> References: <43BFAEE9.7090707@s5r6.in-berlin.de> <43C2D899.2080302@s5r6.in-berlin.de> Organization: YPO4 X-Mailer: Sylpheed version 1.0.5 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 09 Jan 2006 22:41:45 +0100 Stefan Richter wrote: > I wrote: > > Does PCIe provide a bigger host bus address space than PCI? > > PCIe obviously supports 64bit addressing. Do newer revisions of > conventional PCI support more than 32bit addressing? What about PCI-X? TIA. PCI-X allows 32-bit or 64-bit transfers. IIRC, PCI conventional supports 64-bit by "DAC" == dual-address cycle, basically 2 32-bit transfers. > [sbp2 depends on a <= 32bit address space of the host bus. Single-chip > FireWire PCIe adapters are available now but I believe they are merely > based on a PCI FireWire link layer controller plus PCI-PCIe bridge.] The PCI specs cost money, else we could just download and read them. :( Google found some hits, mostly marketing-speak, and this 1394b PCI-64bit host controller: http://tekgems.com/Products/MJ-FW-PCI-13.htm --- ~Randy