projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1e19b16a TG |
1 | #ifndef _LINUX_IOMMU_HELPER_H |
| 2 | #define _LINUX_IOMMU_HELPER_H | |
| 3 | ||
| eecfffc1 FT |
4 | static inline unsigned long iommu_device_max_index(unsigned long size, |
| 5 | unsigned long offset, | |
| 6 | u64 dma_mask) | |
| 7 | { | |
| 8 | if (size + offset > dma_mask) | |
| 9 | return dma_mask - offset + 1; | |
| 10 | else | |
| 11 | return size; | |
| 12 | } | |
| 13 | ||
| 3715863a FT |
14 | extern int iommu_is_span_boundary(unsigned int index, unsigned int nr, |
| 15 | unsigned long shift, | |
| 16 | unsigned long boundary_size); | |
| 0291df8c FT |
17 | extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size, |
| 18 | unsigned long start, unsigned int nr, | |
| 19 | unsigned long shift, | |
| 20 | unsigned long boundary_size, | |
| 21 | unsigned long align_mask); | |
| 1e19b16a | 22 | |
| 56d93660 JR |
23 | extern unsigned long iommu_num_pages(unsigned long addr, unsigned long len, |
| 24 | unsigned long io_page_size); | |
| 25 | ||
| 1e19b16a | 26 | #endif |