Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _I386_SCATTERLIST_H |
2 | #define _I386_SCATTERLIST_H | |
3 | ||
4 | struct scatterlist { | |
5 | struct page *page; | |
6 | unsigned int offset; | |
7 | dma_addr_t dma_address; | |
8 | unsigned int length; | |
9 | }; | |
10 | ||
11 | /* These macros should be used after a pci_map_sg call has been done | |
12 | * to get bus addresses of each of the SG entries and their lengths. | |
13 | * You should only work with the number of sg entries pci_map_sg | |
14 | * returns. | |
15 | */ | |
16 | #define sg_dma_address(sg) ((sg)->dma_address) | |
17 | #define sg_dma_len(sg) ((sg)->length) | |
18 | ||
19 | #define ISA_DMA_THRESHOLD (0x00ffffff) | |
20 | ||
21 | #endif /* !(_I386_SCATTERLIST_H) */ |