dma.h File Reference

#include <stdint.h>
#include <metal/sys.h>

Go to the source code of this file.

Data Structures
struct	metal_sg
	scatter/gather list element structure More...

Macros
#define	METAL_DMA_DEV_R   1
	DMA direction, device read. More...
#define	METAL_DMA_DEV_W   2
	DMA direction, device write. More...
#define	METAL_DMA_DEV_WR   3
	DMA direction, device read/write. More...

Functions
int	metal_dma_map (struct metal_device *dev, uint32_t dir, struct metal_sg *sg_in, int nents_in, struct metal_sg *sg_out)
	Map memory for DMA transaction. More...
void	metal_dma_unmap (struct metal_device *dev, uint32_t dir, struct metal_sg *sg, int nents)
	Unmap DMA memory After the memory is DMA unmapped, the memory should be accessed by the CPU but not the DMA device. More...