From owner-freebsd-multimedia@FreeBSD.ORG Thu Apr 14 16:35:49 2005 Return-Path: Delivered-To: freebsd-multimedia@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8369816A4CE for ; Thu, 14 Apr 2005 16:35:49 +0000 (GMT) Received: from mailout03.sul.t-online.com (mailout03.sul.t-online.com [194.25.134.81]) by mx1.FreeBSD.org (Postfix) with ESMTP id C6ECD43D48 for ; Thu, 14 Apr 2005 16:35:46 +0000 (GMT) (envelope-from Alexander@Leidinger.net) Received: from fwd35.aul.t-online.de by mailout03.sul.t-online.com with smtp id 1DM7JV-00056n-01; Thu, 14 Apr 2005 18:35:33 +0200 Received: from Andro-Beta.Leidinger.net (ThWPP+ZJgeUfURAxGG+ZorPCEoGVeW9OtoDNxp6FWvcrDI1JPvw6YD@[84.128.195.148]) by fwd35.sul.t-online.de with esmtp id 1DM7JF-02Q8hc0; Thu, 14 Apr 2005 18:35:17 +0200 Received: from localhost (localhost [127.0.0.1])j3EGZBM6045822; Thu, 14 Apr 2005 18:35:11 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Received: from 141.113.101.32 ([141.113.101.32]) by netchild.homeip.net (Horde MIME library) with HTTP for ; Thu, 14 Apr 2005 18:35:11 +0200 Message-ID: <20050414183511.4o2rsij4k0coksck@netchild.homeip.net> X-Priority: 3 (Normal) Date: Thu, 14 Apr 2005 18:35:11 +0200 From: Alexander Leidinger To: Mathew Kanner References: <20050410195645.GA2178@cnd.mcgill.ca> <20050414.021552.343134310.kazuhito@ph.noda.tus.ac.jp> <20050413172534.GF2178@cnd.mcgill.ca> <20050414161546.kwroviadwsw8k0w0@netchild.homeip.net> <20050414152146.GI2178@cnd.mcgill.ca> In-Reply-To: <20050414152146.GI2178@cnd.mcgill.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: Internet Messaging Program (IMP) H3 (4.0.2) / FreeBSD-4.11 X-ID: ThWPP+ZJgeUfURAxGG+ZorPCEoGVeW9OtoDNxp6FWvcrDI1JPvw6YD@t-dialin.net X-TOI-MSGID: 5d4b75fe-c29b-4cf9-aec3-9e92b2bd6f40 cc: freebsd-multimedia@freebsd.org cc: julian@elischer.org Subject: Re: de-dma uaudio X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Apr 2005 16:35:49 -0000 Mathew Kanner wrote: >> Do I understand this patch right: it changes from DMA access to non-DMA >> access? >> >> If yes: can someone please explain me why this is a good thing? > > Upper layer does not use DMA. It just isn't use so why > allocate special memeory for it. And our USB stack ([eou]hci) can't ever grow the feature of doing DMA? Bye, Alexander. -- http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137 Are we not men?