1 #ifndef _DMA_REMAPPING_H
2 #define _DMA_REMAPPING_H
5 * VT-d hardware uses 4KiB page size regardless of host page size.
7 #define VTD_PAGE_SHIFT (12)
8 #define VTD_PAGE_SIZE (1UL << VTD_PAGE_SHIFT)
9 #define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT)
10 #define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
12 #define DMA_PTE_READ (1)
13 #define DMA_PTE_WRITE (2)
19 extern void free_dmar_iommu(struct intel_iommu *iommu);
20 extern int iommu_calculate_agaw(struct intel_iommu *iommu);
22 extern int dmar_disabled;