Message ID | 1324643253-3024-2-git-send-email-m.szyprowski@samsung.com (mailing list archive) |
---|---|
State | Not Applicable |
Headers | show |
On Fri, Dec 23, 2011 at 01:27:20PM +0100, Marek Szyprowski wrote: > Introduce new generic alloc and free methods with attributes argument. > > Existing alloc_coherent and free_coherent can be implemented on top of the > new calls with NULL attributes argument. Later also dma_alloc_non_coherent > can be implemented using DMA_ATTR_NONCOHERENT attribute as well as > dma_alloc_writecombine with separate DMA_ATTR_WRITECOMBINE attribute. > > This way the drivers will get more generic, platform independent way of > allocating dma buffers with specific parameters. > > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> > Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Looks sensible to me. Reviewed-by: David Gibson <david@gibson.dropbear.ud.au>
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index e13117c..8cc7f95 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -13,6 +13,12 @@ struct dma_map_ops { dma_addr_t *dma_handle, gfp_t gfp); void (*free_coherent)(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle); + void* (*alloc)(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, + struct dma_attrs *attrs); + void (*free)(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle, + 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,