From 8d4f5339d1ee4027c07e6b2a1cfa9dc41b0d383b Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Fri, 10 Jul 2009 10:05:01 +0900 Subject: x86, IA64, powerpc: add phys_to_dma() and dma_to_phys() This adds two functions, phys_to_dma() and dma_to_phys() to x86, IA64 and powerpc. swiotlb uses them. phys_to_dma() converts a physical address to a dma address. dma_to_phys() does the opposite. Signed-off-by: FUJITA Tomonori Acked-by: Becky Bruce --- arch/ia64/include/asm/dma-mapping.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/ia64/include') diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h index 88d0f860394..f91829de329 100644 --- a/arch/ia64/include/asm/dma-mapping.h +++ b/arch/ia64/include/asm/dma-mapping.h @@ -77,6 +77,16 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) return addr + size <= *dev->dma_mask; } +static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) +{ + return paddr; +} + +static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) +{ + return daddr; +} + extern int dma_get_cache_alignment(void); static inline void -- cgit v1.2.3