[mirror_ubuntu-bionic-kernel.git] / include / asm-arm / scatterlist.h

#ifndef _ASMARM_SCATTERLIST_H
#define _ASMARM_SCATTERLIST_H

#include <asm/memory.h>
#include <asm/types.h>

struct scatterlist {
	struct page	*page;		/* buffer page			 */
	unsigned int	offset;		/* buffer offset		 */
	dma_addr_t	dma_address;	/* dma address			 */
	unsigned int	length;		/* length			 */
};

/*
 * These macros should be used after a pci_map_sg call has been done
 * to get bus addresses of each of the SG entries and their lengths.
 * You should only work with the number of sg entries pci_map_sg
 * returns, or alternatively stop on the first sg_dma_len(sg) which
 * is 0.
 */
#define sg_dma_address(sg)      ((sg)->dma_address)
#define sg_dma_len(sg)          ((sg)->length)

#endif /* _ASMARM_SCATTERLIST_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _ASMARM_SCATTERLIST_H
	2	#define _ASMARM_SCATTERLIST_H
	3
	4	#include <asm/memory.h>
	5	#include <asm/types.h>
	6
	7	struct scatterlist {
	8	struct page page; / buffer page */
	9	unsigned int offset; /* buffer offset */
	10	dma_addr_t dma_address; /* dma address */
	11	unsigned int length; /* length */
1da177e4 LT	12	};
	13
	14	/*
	15	* These macros should be used after a pci_map_sg call has been done
	16	* to get bus addresses of each of the SG entries and their lengths.
	17	* You should only work with the number of sg entries pci_map_sg
	18	* returns, or alternatively stop on the first sg_dma_len(sg) which
	19	* is 0.
	20	*/
	21	#define sg_dma_address(sg) ((sg)->dma_address)
	22	#define sg_dma_len(sg) ((sg)->length)
	23
	24	#endif /* _ASMARM_SCATTERLIST_H */