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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 | 6 | struct scatterlist { |
d6ec0842 JA |
7 | #ifdef CONFIG_DEBUG_SG |
8 | unsigned long sg_magic; | |
9 | #endif | |
18dabf47 | 10 | unsigned long page_link; |
1da177e4 LT |
11 | unsigned int offset;/* for highmem, page offset */ |
12 | dma_addr_t dma_address; | |
13 | unsigned int length; | |
14 | }; | |
15 | ||
d02b08f6 | 16 | #define ISA_DMA_THRESHOLD PHYS_ADDR_MASK |
1da177e4 | 17 | |
634bf4f6 PM |
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 | ||
1da177e4 | 27 | #endif /* !(__ASM_SH_SCATTERLIST_H) */ |