Commit 9adc5374 authored Dec 21, 2011 by Marek Szyprowski

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 <m.szyprowski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

parent 645ae3bc

include/linux/dma-mapping.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -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,