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ARM: dma-mapping: provide dma_to_page()

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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-By: Jamie Iles <jamie@jamieiles.com>
This commit is contained in:
Russell King
2009-10-31 16:07:16 +00:00
parent 1c4a4f48a1
commit ef1baed887
4 changed files with 26 additions and 0 deletions
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10
arch/arm/include/asm/dma-mapping.h
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@@ -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);