projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 IM |
28 | |
| 29 | #ifdef CONFIG_DMAR | |
| 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); |
| c66b9906 IM |
33 | #else |
| 34 | static inline int iommu_calculate_agaw(struct intel_iommu *iommu) | |
| 35 | { | |
| 36 | return 0; | |
| 37 | } | |
| 4ed0d3e6 FY |
38 | static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu) |
| 39 | { | |
| 40 | return 0; | |
| 41 | } | |
| 318fe7df SS |
42 | static inline void free_dmar_iommu(struct intel_iommu *iommu) |
| 43 | { | |
| 44 | } | |
| c66b9906 | 45 | #endif |
| e61d98d8 | 46 | |
| 2ae21010 SS |
47 | extern int dmar_disabled; |
| 48 | ||
| e61d98d8 | 49 | #endif |