diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-10-31 16:07:16 +0000 |
|---|---|---|
| committer | Venkata(Muni) Anda <muni@nvidia.com> | 2010-01-12 19:56:33 -0800 |
| commit | 25b3d452be81027b4c41868a65cbe9c17bd9fe32 (patch) | |
| tree | 2496d61b8fa6c9c5976c8f2b034bbb0fa0e94e2d /arch/arm/include | |
| parent | bcb0ad929cfef63f1d8d2e053b0d300dc6198c46 (diff) | |
ARM: dma-mapping: provide dma_to_page()
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-By: Jamie Iles <jamie@jamieiles.com>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/dma-mapping.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 59fa762e9c66..3dddf5b5ab1f 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -20,6 +20,11 @@ static inline dma_addr_t page_to_dma(struct device *dev, struct page *page) return (dma_addr_t)__virt_to_bus((unsigned long)page_address(page)); } +static inline struct page *dma_to_page(struct device *dev, dma_addr_t addr) +{ + return pfn_to_page(__bus_to_pfn(addr)); +} + static inline void *dma_to_virt(struct device *dev, dma_addr_t addr) { return (void *)__bus_to_virt(addr); @@ -35,6 +40,11 @@ static inline dma_addr_t page_to_dma(struct device *dev, struct page *page) return __arch_page_to_dma(dev, page); } +static inline struct page *dma_to_page(struct device *dev, dma_addr_t addr) +{ + return __arch_dma_to_page(dev, addr); +} + static inline void *dma_to_virt(struct device *dev, dma_addr_t addr) { return __arch_dma_to_virt(dev, addr); |