| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ASM_PARISC_SCATTERLIST_H |
| 2 | #define _ASM_PARISC_SCATTERLIST_H |
| 3 | |
| 4 | #include <asm/page.h> |
| Jean Delvare | a9dfd28 | 2007-03-06 02:45:12 -0800 | [diff] [blame] | 5 | #include <asm/types.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
| 7 | struct scatterlist { |
| Jens Axboe | 18dabf4 | 2007-10-22 19:57:20 +0200 | [diff] [blame^] | 8 | unsigned long page_link; |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | unsigned int offset; |
| 10 | |
| 11 | unsigned int length; |
| 12 | |
| 13 | /* an IOVA can be 64-bits on some PA-Risc platforms. */ |
| 14 | dma_addr_t iova; /* I/O Virtual Address */ |
| 15 | __u32 iova_length; /* bytes mapped */ |
| 16 | }; |
| 17 | |
| 18 | #define sg_virt_addr(sg) ((unsigned long)(page_address(sg->page) + sg->offset)) |
| 19 | #define sg_dma_address(sg) ((sg)->iova) |
| 20 | #define sg_dma_len(sg) ((sg)->iova_length) |
| 21 | |
| 22 | #define ISA_DMA_THRESHOLD (~0UL) |
| 23 | |
| 24 | #endif /* _ASM_PARISC_SCATTERLIST_H */ |