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common: dma-mapping: introduce mmap method

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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 <[email protected]>
Acked-by: Kyungmin Park <[email protected]>
Reviewed-by: Arnd Bergmann <[email protected]>
This commit is contained in:
Marek Szyprowski committed 2012-03-28 16:36:42 +02:00
1 parent 645ae3bce3
commit 9adc537452
1 file changed
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include/linux/dma-mapping.h
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@@ -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,