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 | |
6dd9a7c7 YS |
12 | #define VTD_STRIDE_SHIFT (9) |
13 | #define VTD_STRIDE_MASK (((u64)-1) << VTD_STRIDE_SHIFT) | |
14 | ||
e61d98d8 SS |
15 | #define DMA_PTE_READ (1) |
16 | #define DMA_PTE_WRITE (2) | |
6dd9a7c7 | 17 | #define DMA_PTE_LARGE_PAGE (1 << 7) |
9cf06697 | 18 | #define DMA_PTE_SNP (1 << 11) |
e61d98d8 | 19 | |
4ed0d3e6 | 20 | #define CONTEXT_TT_MULTI_LEVEL 0 |
93a23a72 | 21 | #define CONTEXT_TT_DEV_IOTLB 1 |
4ed0d3e6 FY |
22 | #define CONTEXT_TT_PASS_THROUGH 2 |
23 | ||
e61d98d8 | 24 | struct intel_iommu; |
99126f7c MM |
25 | struct dmar_domain; |
26 | struct root_entry; | |
e61d98d8 | 27 | |
c66b9906 | 28 | |
d3f13810 | 29 | #ifdef CONFIG_INTEL_IOMMU |
318fe7df | 30 | extern void free_dmar_iommu(struct intel_iommu *iommu); |
1b573683 | 31 | extern int iommu_calculate_agaw(struct intel_iommu *iommu); |
4ed0d3e6 | 32 | extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu); |
f5d1b97b | 33 | extern int dmar_disabled; |
8bc1f85c | 34 | extern int intel_iommu_enabled; |
c66b9906 IM |
35 | #else |
36 | static inline int iommu_calculate_agaw(struct intel_iommu *iommu) | |
37 | { | |
38 | return 0; | |
39 | } | |
4ed0d3e6 FY |
40 | static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu) |
41 | { | |
42 | return 0; | |
43 | } | |
318fe7df SS |
44 | static inline void free_dmar_iommu(struct intel_iommu *iommu) |
45 | { | |
46 | } | |
f5d1b97b | 47 | #define dmar_disabled (1) |
8bc1f85c | 48 | #define intel_iommu_enabled (0) |
c66b9906 | 49 | #endif |
e61d98d8 | 50 | |
2ae21010 | 51 | |
e61d98d8 | 52 | #endif |