iommu-helper.h revision d26dbc5cf94b0a28acc947285c3b54814a73cb2e 
1static inline unsigned long iommu_device_max_index(unsigned long size,
2						   unsigned long offset,
3						   u64 dma_mask)
4{
5	if (size + offset > dma_mask)
6		return dma_mask - offset + 1;
7	else
8		return size;
9}
10
11extern int iommu_is_span_boundary(unsigned int index, unsigned int nr,
12				  unsigned long shift,
13				  unsigned long boundary_size);
14extern void iommu_area_reserve(unsigned long *map, unsigned long i, int len);
15extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
16				      unsigned long start, unsigned int nr,
17				      unsigned long shift,
18				      unsigned long boundary_size,
19				      unsigned long align_mask);
20extern void iommu_area_free(unsigned long *map, unsigned long start,
21			    unsigned int nr);
22