Commit | Line | Data |
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e61d98d8 SS |
1 | #ifndef _DMA_REMAPPING_H |
2 | #define _DMA_REMAPPING_H | |
3 | ||
4 | /* | |
5b6985ce | 5 | * VT-d hardware uses 4KiB page size regardless of host page size. |
e61d98d8 | 6 | */ |
5b6985ce FY |
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) | |
e61d98d8 | 11 | |
e61d98d8 SS |
12 | #define DMA_PTE_READ (1) |
13 | #define DMA_PTE_WRITE (2) | |
9cf06697 | 14 | #define DMA_PTE_SNP (1 << 11) |
e61d98d8 | 15 | |
4ed0d3e6 | 16 | #define CONTEXT_TT_MULTI_LEVEL 0 |
93a23a72 | 17 | #define CONTEXT_TT_DEV_IOTLB 1 |
4ed0d3e6 FY |
18 | #define CONTEXT_TT_PASS_THROUGH 2 |
19 | ||
e61d98d8 | 20 | struct intel_iommu; |
99126f7c MM |
21 | struct dmar_domain; |
22 | struct root_entry; | |
e61d98d8 | 23 | |
e61d98d8 | 24 | extern void free_dmar_iommu(struct intel_iommu *iommu); |
c66b9906 IM |
25 | |
26 | #ifdef CONFIG_DMAR | |
1b573683 | 27 | extern int iommu_calculate_agaw(struct intel_iommu *iommu); |
4ed0d3e6 | 28 | extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu); |
c66b9906 IM |
29 | #else |
30 | static inline int iommu_calculate_agaw(struct intel_iommu *iommu) | |
31 | { | |
32 | return 0; | |
33 | } | |
4ed0d3e6 FY |
34 | static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu) |
35 | { | |
36 | return 0; | |
37 | } | |
c66b9906 | 38 | #endif |
e61d98d8 | 39 | |
2ae21010 SS |
40 | extern int dmar_disabled; |
41 | ||
e61d98d8 | 42 | #endif |