From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759452AbXGJPng (ORCPT ); Tue, 10 Jul 2007 11:43:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754411AbXGJPn3 (ORCPT ); Tue, 10 Jul 2007 11:43:29 -0400 Received: from agminet01.oracle.com ([141.146.126.228]:30858 "EHLO agminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752454AbXGJPn2 (ORCPT ); Tue, 10 Jul 2007 11:43:28 -0400 Date: Tue, 10 Jul 2007 08:46:03 -0700 From: Randy Dunlap To: Zhang Wei Cc: akpm@linux-foundation.org, paulus@samba.org, galak@kernel.crashing.org, linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/4] Extend the DMA-engine API. Message-Id: <20070710084603.286d7bb8.randy.dunlap@oracle.com> In-Reply-To: <11840607111926-git-send-email-wei.zhang@freescale.com> References: <11840607111926-git-send-email-wei.zhang@freescale.com> Organization: Oracle Linux Eng. X-Mailer: Sylpheed 2.4.2 (GTK+ 2.8.10; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAQAAAAI= X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE X-Whitelist: TRUE Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 10 Jul 2007 17:45:11 +0800 Zhang Wei wrote: > Add channel wait queue and transfer callback dma_xfer_callback(). > If the DMA controller and driver support interrupt, when the > transfer is finished, it will wakeup the wait queue > and call the callback function of the channel. > > Add dma_async_raw_xfer() to API and device_raw_xfer() to struct dma_device > for RAW physical address DMA transfer, which will be used at transfer > between I/O address and memory address. > > Signed-off-by: Zhang Wei > --- > include/linux/dmaengine.h | 35 +++++++++++++++++++++++++++++++++++ > 1 files changed, 35 insertions(+), 0 deletions(-) > /** > + * dma_async_raw_xfer - transfor data between physical addresses with callback transfer > + * @chan: DMA channel to be used > + * @dest: destination address (physical) > + * @src: source address (physical) > + * @len: length > + */ > +static inline dma_cookie_t dma_async_raw_xfer(struct dma_chan *chan, > + dma_addr_t dest, dma_addr_t src, size_t len, > + dma_xfer_callback cb, void *data) > +{ --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***