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Linux kernel mirror (for testing)
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1#ifndef __ASM_SH_SCATTERLIST_H
2#define __ASM_SH_SCATTERLIST_H
3
4#include <asm/types.h>
5
6struct scatterlist {
7#ifdef CONFIG_DEBUG_SG
8 unsigned long sg_magic;
9#endif
10 unsigned long page_link;
11 unsigned int offset;/* for highmem, page offset */
12 dma_addr_t dma_address;
13 unsigned int length;
14};
15
16#define ISA_DMA_THRESHOLD PHYS_ADDR_MASK
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 /* !(__ASM_SH_SCATTERLIST_H) */