1 #ifndef _LINUX_IOMMU_HELPER_H
2 #define _LINUX_IOMMU_HELPER_H
4 static inline unsigned long iommu_device_max_index(unsigned long size
,
8 if (size
+ offset
> dma_mask
)
9 return dma_mask
- offset
+ 1;
14 extern int iommu_is_span_boundary(unsigned int index
, unsigned int nr
,
16 unsigned long boundary_size
);
17 extern void iommu_area_reserve(unsigned long *map
, unsigned long i
, int len
);
18 extern unsigned long iommu_area_alloc(unsigned long *map
, unsigned long size
,
19 unsigned long start
, unsigned int nr
,
21 unsigned long boundary_size
,
22 unsigned long align_mask
);
23 extern void iommu_area_free(unsigned long *map
, unsigned long start
,
26 extern unsigned long iommu_num_pages(unsigned long addr
, unsigned long len
,
27 unsigned long io_page_size
);
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