From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932431AbXAGIZa (ORCPT ); Sun, 7 Jan 2007 03:25:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932433AbXAGIZa (ORCPT ); Sun, 7 Jan 2007 03:25:30 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:47698 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932431AbXAGIZa (ORCPT ); Sun, 7 Jan 2007 03:25:30 -0500 Message-ID: <45A0AE76.40600@garzik.org> Date: Sun, 07 Jan 2007 03:25:26 -0500 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.9 (X11/20061219) MIME-Version: 1.0 To: Manish Regmi CC: linux-kernel@vger.kernel.org Subject: Re: ATA streaming feature support References: <652016d30701062240w4756bc4m8fdb54070708fd81@mail.gmail.com> In-Reply-To: <652016d30701062240w4756bc4m8fdb54070708fd81@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.7 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Manish Regmi wrote: > Hi all, > First of all sorry for bringing this topic again. > As discussed in --> http://lkml.org/lkml/2006/5/5/47 > The ATA Streaming feature set is not necessary to be in Kernel Space > (IDE driver). There is a suggestion creating user space library. > > But how is the user space apps going to use the commands like READ > STREAM DMA EXT (0x2A). Shouldn't there be some support in kernel which > setups up PRD tables and all. > It doesn't seem to be possible.... is it? If you pass SG_IO addresses, they become DMA scatter/gather tables. Jeff