1#ifndef __ASM_SCATTERLIST_H
2#define __ASM_SCATTERLIST_H
3
4#include <asm/types.h>
5
6struct scatterlist {
7	struct page *	page;
8	unsigned int	offset;
9	dma_addr_t	dma_address;
10	unsigned int	length;
11};
12
13/*
14 * These macros should be used after a pci_map_sg call has been done
15 * to get bus addresses of each of the SG entries and their lengths.
16 * You should only work with the number of sg entries pci_map_sg
17 * returns, or alternatively stop on the first sg_dma_len(sg) which
18 * is 0.
19 */
20#define sg_dma_address(sg)	((sg)->dma_address)
21#define sg_dma_len(sg)		((sg)->length)
22
23#define ISA_DMA_THRESHOLD (0x00ffffffUL)
24
25#endif /* __ASM_SCATTERLIST_H */
26