[mirror_ubuntu-artful-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 {
#ifdef CONFIG_DEBUG_SG
	unsigned long	sg_magic;
#endif
	unsigned long	page_link;
	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 {
d6ec0842 JA	8	#ifdef CONFIG_DEBUG_SG
	9	unsigned long sg_magic;
	10	#endif
18dabf47	11	unsigned long page_link;
1da177e4 LT	12	unsigned int offset; /* buffer offset */
	13	dma_addr_t dma_address; /* dma address */
	14	unsigned int length; /* length */
1da177e4 LT	15	};
	16
	17	/*
	18	* These macros should be used after a pci_map_sg call has been done
	19	* to get bus addresses of each of the SG entries and their lengths.
	20	* You should only work with the number of sg entries pci_map_sg
	21	* returns, or alternatively stop on the first sg_dma_len(sg) which
	22	* is 0.
	23	*/
	24	#define sg_dma_address(sg) ((sg)->dma_address)
	25	#define sg_dma_len(sg) ((sg)->length)
	26
	27	#endif /* _ASMARM_SCATTERLIST_H */