DMA primitives for libmetal. More...

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

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...

Detailed Description

DMA primitives for libmetal.

Data Structures