From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751494AbVH2UJk (ORCPT ); Mon, 29 Aug 2005 16:09:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751497AbVH2UJk (ORCPT ); Mon, 29 Aug 2005 16:09:40 -0400 Received: from ra.tuxdriver.com ([24.172.12.4]:29446 "EHLO ra.tuxdriver.com") by vger.kernel.org with ESMTP id S1751494AbVH2UJj (ORCPT ); Mon, 29 Aug 2005 16:09:39 -0400 Date: Mon, 29 Aug 2005 16:09:18 -0400 From: "John W. Linville" To: linux-kernel@vger.kernel.org Cc: ak@suse.de, discuss@x86-64.org Subject: [patch 2.6.13] x86_64: implement dma_sync_single_range_for_{cpu,device} Message-ID: <20050829200916.GI3716@tuxdriver.com> Mail-Followup-To: linux-kernel@vger.kernel.org, ak@suse.de, discuss@x86-64.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Implement dma_sync_single_range_for_{cpu,device}, based on curent implementations of dma_sync_single_for_{cpu,device}. Signed-off-by: John W. Linville --- It is hard to use this API if common platforms do not implement it. :-) Hopefully I did not miss something obvious? This is a naive implementation, so flame away... include/asm-x86_64/dma-mapping.h | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+) diff --git a/include/asm-x86_64/dma-mapping.h b/include/asm-x86_64/dma-mapping.h --- a/include/asm-x86_64/dma-mapping.h +++ b/include/asm-x86_64/dma-mapping.h @@ -85,6 +85,34 @@ static inline void dma_sync_single_for_d flush_write_buffers(); } +static inline void dma_sync_single_range_for_cpu(struct device *hwdev, + dma_addr_t dma_handle, + unsigned long offset, + size_t size, int direction) +{ + if (direction == DMA_NONE) + out_of_line_bug(); + + if (swiotlb) + return swiotlb_sync_single_for_cpu(hwdev,dma_handle+offset,size,direction); + + flush_write_buffers(); +} + +static inline void dma_sync_single_range_for_device(struct device *hwdev, + dma_addr_t dma_handle, + unsigned long offset, + size_t size, int direction) +{ + if (direction == DMA_NONE) + out_of_line_bug(); + + if (swiotlb) + return swiotlb_sync_single_for_device(hwdev,dma_handle+offset,size,direction); + + flush_write_buffers(); +} + static inline void dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, int nelems, int direction) -- John W. Linville linville@tuxdriver.com