Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef __ASM_SH_SCATTERLIST_H |
2 | #define __ASM_SH_SCATTERLIST_H | |
3 | ||
a9dfd281 JD |
4 | #include <asm/types.h> |
5 | ||
1da177e4 LT |
6 | struct scatterlist { |
7 | struct page * page; /* Location for highmem page, if any */ | |
8 | unsigned int offset;/* for highmem, page offset */ | |
9 | dma_addr_t dma_address; | |
10 | unsigned int length; | |
11 | }; | |
12 | ||
13 | #define ISA_DMA_THRESHOLD (0x1fffffff) | |
14 | ||
634bf4f6 PM |
15 | /* These macros should be used after a pci_map_sg call has been done |
16 | * to get bus addresses of each of the SG entries and their lengths. | |
17 | * You should only work with the number of sg entries pci_map_sg | |
18 | * returns, or alternatively stop on the first sg_dma_len(sg) which | |
19 | * is 0. | |
20 | */ | |
21 | #define sg_dma_address(sg) ((sg)->dma_address) | |
22 | #define sg_dma_len(sg) ((sg)->length) | |
23 | ||
1da177e4 | 24 | #endif /* !(__ASM_SH_SCATTERLIST_H) */ |