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Commit 8d15d19e authored by John W. Linville's avatar John W. Linville Committed by Tony Luck
Browse files

[PATCH] x86_64: implement dma_sync_single_range_for_{cpu,device} 



Re-implement dma_sync_single_range_for_{cpu,device} for x86_64 using
swiotlb_sync_single_range_for_{cpu,device}.

Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 569c8bf5

include/asm-x86_64/dma-mapping.h

+27 −4
Original line number Diff line number Diff line
@@ -85,10 +85,33 @@ static inline void dma_sync_single_for_device(struct device *hwdev, 
	flush_write_buffers();

}



#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir)       \

        dma_sync_single_for_cpu(dev, dma_handle, size, dir)

#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir)    \

        dma_sync_single_for_device(dev, dma_handle, size, dir)

static inline void dma_sync_single_range_for_cpu(struct device *hwdev,

						 dma_addr_t dma_handle,

						 unsigned long offset,

						 size_t size, int direction)

{

	if (direction == DMA_NONE)

		out_of_line_bug();



	if (swiotlb)

		return swiotlb_sync_single_range_for_cpu(hwdev,dma_handle,offset,size,direction);



	flush_write_buffers();

}



static inline void dma_sync_single_range_for_device(struct device *hwdev,

						    dma_addr_t dma_handle,

						    unsigned long offset,

						    size_t size, int direction)

{

        if (direction == DMA_NONE)

		out_of_line_bug();



	if (swiotlb)

		return swiotlb_sync_single_range_for_device(hwdev,dma_handle,offset,size,direction);



	flush_write_buffers();

}



static inline void dma_sync_sg_for_cpu(struct device *hwdev,

				       struct scatterlist *sg,