From: Marek Szyprowski Date: Wed, 21 Dec 2011 15:55:33 +0000 (+0100) Subject: common: dma-mapping: introduce mmap method X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9adc5374;p=openwrt%2Fstaging%2Fblogic.git common: dma-mapping: introduce mmap method Introduce new generic mmap method with attributes argument. This method lets drivers to create a userspace mapping for a DMA buffer in generic, architecture independent way. Signed-off-by: Marek Szyprowski Acked-by: Kyungmin Park Reviewed-by: Arnd Bergmann --- diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 2fc413a873ea..b903a20867f7 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -15,6 +15,9 @@ struct dma_map_ops { void (*free)(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle, struct dma_attrs *attrs); + int (*mmap)(struct device *, struct vm_area_struct *, + void *, dma_addr_t, size_t, struct dma_attrs *attrs); + dma_addr_t (*map_page)(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir,