ACPI: simplify acpi_pci_irq_add_prt() API
[linux-2.6/linux-acpi-2.6.git] / include / linux / iommu-helper.h
blob3b068e5b56710222f43bd86a3a5f849128526171
1 #ifndef _LINUX_IOMMU_HELPER_H
2 #define _LINUX_IOMMU_HELPER_H
4 static inline unsigned long iommu_device_max_index(unsigned long size,
5 unsigned long offset,
6 u64 dma_mask)
8 if (size + offset > dma_mask)
9 return dma_mask - offset + 1;
10 else
11 return size;
14 extern int iommu_is_span_boundary(unsigned int index, unsigned int nr,
15 unsigned long shift,
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,
20 unsigned long shift,
21 unsigned long boundary_size,
22 unsigned long align_mask);
23 extern void iommu_area_free(unsigned long *map, unsigned long start,
24 unsigned int nr);
26 extern unsigned long iommu_num_pages(unsigned long addr, unsigned long len,
27 unsigned long io_page_size);
29 #endif