Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8d4f5339 authored by FUJITA Tomonori's avatar FUJITA Tomonori
Browse files

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: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: default avatarBecky Bruce <beckyb@kernel.crashing.org>
parent 8f2502fd

arch/ia64/include/asm/dma-mapping.h

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

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

+10 −0
Original line number Diff line number Diff line
@@ -437,6 +437,16 @@ 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 + get_dma_direct_offset(dev);

}



static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)

{

	return daddr - get_dma_direct_offset(dev);

}



#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)

#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)

#ifdef CONFIG_NOT_COHERENT_CACHE

arch/x86/include/asm/dma-mapping.h

+10 −0
Original line number Diff line number Diff line
@@ -63,6 +63,16 @@ 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;

}



static inline void

dma_cache_sync(struct device *dev, void *vaddr, size_t size,

	enum dma_data_direction dir)