Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752109AbXBWBWG (ORCPT ); Thu, 22 Feb 2007 20:22:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752107AbXBWBWG (ORCPT ); Thu, 22 Feb 2007 20:22:06 -0500 Received: from ra.tuxdriver.com ([70.61.120.52]:4073 "EHLO ra.tuxdriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752109AbXBWBWE (ORCPT ); Thu, 22 Feb 2007 20:22:04 -0500 Date: Thu, 22 Feb 2007 19:59:45 -0500 From: "John W. Linville" To: linux-kernel@vger.kernel.org, James.Bottomley@SteelEye.com Cc: Tejun Heo , Jeff Garzik , Martin Schwidefsky , Heiko Carstens Subject: [PATCH] dma-mapping-broken.h: flesh-out DMA API stubs Message-ID: <20070223005945.GA13084@tuxdriver.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3387 Lines: 140 This allows some drivers compile on arches that don't support DMA (e.g. s390). Signed-off-by: John W. Linville --- Is there any reason why this header should not cover the whole DMA API? Compile-tested only... include/asm-generic/dma-mapping-broken.h | 134 ++++++++++++++++++++++++++++++ 1 files changed, 134 insertions(+), 0 deletions(-) diff --git a/include/asm-generic/dma-mapping-broken.h b/include/asm-generic/dma-mapping-broken.h index 29413d3..84812dd 100644 --- a/include/asm-generic/dma-mapping-broken.h +++ b/include/asm-generic/dma-mapping-broken.h @@ -21,4 +21,116 @@ dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) +static inline dma_addr_t +dma_map_single(struct device *dev, void *ptr, size_t size, + enum dma_data_direction direction) +{ + BUG(); + return (dma_addr_t)0; +} + +static inline void +dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline int +dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction direction) +{ + BUG(); + return 0; +} + +static inline void +dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline dma_addr_t +dma_map_page(struct device *dev, struct page *page, unsigned long offset, + size_t size, enum dma_data_direction direction) +{ + BUG(); + return (dma_addr_t)0; +} + +static inline void +dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline void +dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline void +dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, + unsigned long offset, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline void +dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, + enum dma_data_direction direction) +{ + BUG(); +} + +#define dma_sync_single_for_device dma_sync_single_for_cpu +#define dma_sync_single_range_for_device dma_sync_single_range_for_cpu +#define dma_sync_sg_for_device dma_sync_sg_for_cpu + +static inline int +dma_mapping_error(dma_addr_t dma_addr) +{ + BUG(); + return 1; +} + +static inline int +dma_supported(struct device *dev, u64 mask) +{ + return 0; +} + +static inline int +dma_set_mask(struct device *dev, u64 mask) +{ + BUG(); + return -EIO; +} + +static inline int +dma_get_cache_alignment(void) +{ + BUG(); + return 0; +} + +int +dma_is_consistent(struct device *dev, dma_addr_t dma_handle) +{ + BUG(); + return 0; +} + +static inline void +dma_cache_sync(struct device *dev, void *vaddr, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + #endif /* _ASM_GENERIC_DMA_MAPPING_H */ -- 1.4.4.2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/