[PATCHv2 12/14] common: dma-mapping: introduce mmap method
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: 2012-03-27 13:43:33
Also in:
linux-alpha, linux-arm-kernel, linux-mips, linux-mm, linuxppc-dev
Subsystem:
dma mapping helpers, the rest · Maintainers:
Marek Szyprowski, Linus Torvalds
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> --- include/linux/dma-mapping.h | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 2fc413a..b903a20 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,
--
1.7.1.569.g6f426
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