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[linux-2.6.9-moxart.git] / include / asm-arm / scatterlist.h
blob83b876fb04cc2c0074bed7d43b8c9f4e69173a96
1 #ifndef _ASMARM_SCATTERLIST_H
2 #define _ASMARM_SCATTERLIST_H
4 #include <asm/memory.h>
5 #include <asm/types.h>
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 */
12 char *__address; /* for set_dma_addr */
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, or alternatively stop on the first sg_dma_len(sg) which
20 * is 0.
22 #define sg_dma_address(sg) ((sg)->dma_address)
23 #define sg_dma_len(sg) ((sg)->length)
25 #endif /* _ASMARM_SCATTERLIST_H */