1#ifndef _X8664_SCATTERLIST_H
2#define _X8664_SCATTERLIST_H
3
4#include <asm/types.h>
5
6struct scatterlist {
7    struct page		*page;
8    unsigned int	offset;
9    unsigned int	length;
10    dma_addr_t		dma_address;
11    unsigned int        dma_length;
12};
13
14#define ISA_DMA_THRESHOLD (0x00ffffff)
15
16/* These macros should be used after a pci_map_sg call has been done
17 * to get bus addresses of each of the SG entries and their lengths.
18 * You should only work with the number of sg entries pci_map_sg
19 * returns.
20 */
21#define sg_dma_address(sg)     ((sg)->dma_address)
22#define sg_dma_len(sg)         ((sg)->dma_length)
23
24#endif
25