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Commit ef1baed8 authored by Russell King's avatar Russell King
Browse files

ARM: dma-mapping: provide dma_to_page() 



Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Tested-By: default avatarJamie Iles <jamie@jamieiles.com>
parent 1c4a4f48

arch/arm/include/asm/dma-mapping.h

+10 −0
Original line number Diff line number Diff line
@@ -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);

arch/arm/mach-iop13xx/include/mach/memory.h

+2 −0
Original line number Diff line number Diff line
@@ -64,6 +64,8 @@ static inline unsigned long __lbus_to_virt(dma_addr_t x) 
		(dma_addr_t)page_to_phys(page);				\

	})



#define __arch_dma_to_page(dev, addr)	phys_to_page(addr)



#endif /* CONFIG_ARCH_IOP13XX */

#endif /* !ASSEMBLY */

arch/arm/mach-ks8695/include/mach/memory.h

+7 −0
Original line number Diff line number Diff line
@@ -41,6 +41,13 @@ extern struct bus_type platform_bus_type; 
		__dma = __dma - PHYS_OFFSET + KS8695_PCIMEM_PA; \

	   __dma; })



#define __arch_dma_to_page(dev, x)	\

	({ dma_addr_t __dma = x;				\

	   if (!is_lbus_device(dev))				\

		__dma += PHYS_OFFSET - KS8695_PCIMEM_PA;	\

	   phys_to_page(__dma);					\

	})



#endif



#endif

arch/arm/plat-omap/include/mach/memory.h

+7 −0
Original line number Diff line number Diff line
@@ -68,6 +68,13 @@ 
		__dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \

	   __dma; })



#define __arch_dma_to_page(dev, addr)	\

	({ dma_addr_t __dma = addr;				\

	   if (is_lbus_device(dev))				\

		__dma += PHYS_OFFSET - OMAP1510_LB_OFFSET;	\

	   phys_to_page(__dma);					\

	})



#define __arch_dma_to_virt(dev, addr)	({ (void *) (is_lbus_device(dev) ? \

						lbus_to_virt(addr) : \

						__phys_to_virt(addr)); })