From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Sat, 23 Oct 2004 16:24:21 +0100 (BST) Received: from p508B657D.dip.t-dialin.net ([IPv6:::ffff:80.139.101.125]:30255 "EHLO mail.linux-mips.net") by linux-mips.org with ESMTP id ; Sat, 23 Oct 2004 16:24:17 +0100 Received: from fluff.linux-mips.net (fluff.linux-mips.net [127.0.0.1]) by mail.linux-mips.net (8.12.11/8.12.8) with ESMTP id i9NFOCxE015840; Sat, 23 Oct 2004 17:24:12 +0200 Received: (from ralf@localhost) by fluff.linux-mips.net (8.12.11/8.12.11/Submit) id i9NFOAUN015839; Sat, 23 Oct 2004 17:24:10 +0200 Date: Sat, 23 Oct 2004 17:24:10 +0200 From: Ralf Baechle To: Bruno Randolf <520066427640-0001@t-online.de> Cc: linux-mips@linux-mips.org, "'Eric DeVolder'" Subject: Re: Hi-Speed USB controller and au1500 Message-ID: <20041023152410.GA15788@linux-mips.org> References: <200410231638.20982.bruno.randolf@4g-systems.biz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200410231638.20982.bruno.randolf@4g-systems.biz> User-Agent: Mutt/1.4.1i 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: 6188 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 Sat, Oct 23, 2004 at 04:38:15PM +0200, Bruno Randolf wrote: > would it be possible to use CONFIG_NONCOHERENT_IO=y only for USB, and not PCI? > we have PCI cards (prism54) which only work without CONFIG_NONCOHERENT_IO, so > at the moment we can either have USB host or prism54 based PCI cards... At the moment you can use such a partially coherent system with with CONFIG_NONCOHERENT_IO. It should work but of course not be overly efficient. Supporting I/O coherency on a per device base is on the to do list. Ralf