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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-10-31 16:07:16 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-11-23 12:53:54 +0000
commitef1baed8870d1eebb0c08d9a466e703f1a21b484 (patch)
treedb1f7d3b5ee8d34e4778bfae66c86ff33e10ca0a /arch/arm/include/asm/dma-mapping.h
parent1c4a4f48a14861a567c8861355bc8252da3a003f (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/asm/dma-mapping.h')
-rw-r--r--arch/arm/include/asm/dma-mapping.h10
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 5d78eb16395..f06d80c2274 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)__pfn_to_bus(page_to_pfn(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);