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Commit e1ae659b authored by Laura Abbott's avatar Laura Abbott Committed by Liam Mark
Browse files

arm64: Add dma mapping APIs for other memory types 



Users of dma on arm may call dma_*_writecombine and dma_*_nonconsistent.
Add these functions for arm64 as well.

Change-Id: I983043f34e6fe01defc1901e036cf1c17f985bda
Signed-off-by: default avatarLaura Abbott <lauraa@codeaurora.org>
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent dbb06ec2

include/linux/dma-mapping.h

+23 −0
Original line number Diff line number Diff line
@@ -802,6 +802,29 @@ static inline int dma_mmap_wc(struct device *dev, 
#define dma_mmap_writecombine dma_mmap_wc

#endif



static inline void *dma_alloc_nonconsistent(struct device *dev, size_t size,

					dma_addr_t *dma_handle, gfp_t flag)

{

	unsigned long attrs = DMA_ATTR_NON_CONSISTENT;



	return dma_alloc_attrs(dev, size, dma_handle, flag, attrs);

}



static inline void dma_free_nonconsistent(struct device *dev, size_t size,

					void *cpu_addr, dma_addr_t dma_handle)

{

	unsigned long attrs = DMA_ATTR_NON_CONSISTENT;



	return dma_free_attrs(dev, size, cpu_addr, dma_handle, attrs);

}



static inline int dma_mmap_nonconsistent(struct device *dev,

		struct vm_area_struct *vma, void *cpu_addr,

		dma_addr_t dma_addr, size_t size)

{

	return -ENODEV;

}



#if defined(CONFIG_NEED_DMA_MAP_STATE) || defined(CONFIG_DMA_API_DEBUG)

#define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME)        dma_addr_t ADDR_NAME

#define DEFINE_DMA_UNMAP_LEN(LEN_NAME)          __u32 LEN_NAME