Blame view
include/linux/dma_remapping.h
1.26 KB
e61d98d8d
|
1 2 3 4 |
#ifndef _DMA_REMAPPING_H #define _DMA_REMAPPING_H /* |
5b6985ce8
|
5 |
* VT-d hardware uses 4KiB page size regardless of host page size. |
e61d98d8d
|
6 |
*/ |
5b6985ce8
|
7 8 9 10 |
#define VTD_PAGE_SHIFT (12) #define VTD_PAGE_SIZE (1UL << VTD_PAGE_SHIFT) #define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT) #define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK) |
e61d98d8d
|
11 |
|
6dd9a7c73
|
12 13 |
#define VTD_STRIDE_SHIFT (9) #define VTD_STRIDE_MASK (((u64)-1) << VTD_STRIDE_SHIFT) |
e61d98d8d
|
14 15 |
#define DMA_PTE_READ (1) #define DMA_PTE_WRITE (2) |
6dd9a7c73
|
16 |
#define DMA_PTE_LARGE_PAGE (1 << 7) |
9cf066974
|
17 |
#define DMA_PTE_SNP (1 << 11) |
e61d98d8d
|
18 |
|
4ed0d3e6c
|
19 |
#define CONTEXT_TT_MULTI_LEVEL 0 |
93a23a727
|
20 |
#define CONTEXT_TT_DEV_IOTLB 1 |
4ed0d3e6c
|
21 |
#define CONTEXT_TT_PASS_THROUGH 2 |
e61d98d8d
|
22 |
struct intel_iommu; |
99126f7ce
|
23 24 |
struct dmar_domain; struct root_entry; |
e61d98d8d
|
25 |
|
c66b9906f
|
26 |
|
d3f138106
|
27 |
#ifdef CONFIG_INTEL_IOMMU |
318fe7df9
|
28 |
extern void free_dmar_iommu(struct intel_iommu *iommu); |
1b5736839
|
29 |
extern int iommu_calculate_agaw(struct intel_iommu *iommu); |
4ed0d3e6c
|
30 |
extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu); |
f5d1b97bc
|
31 |
extern int dmar_disabled; |
8bc1f85c0
|
32 |
extern int intel_iommu_enabled; |
c66b9906f
|
33 34 35 36 37 |
#else static inline int iommu_calculate_agaw(struct intel_iommu *iommu) { return 0; } |
4ed0d3e6c
|
38 39 40 41 |
static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu) { return 0; } |
318fe7df9
|
42 43 44 |
static inline void free_dmar_iommu(struct intel_iommu *iommu) { } |
f5d1b97bc
|
45 |
#define dmar_disabled (1) |
8bc1f85c0
|
46 |
#define intel_iommu_enabled (0) |
c66b9906f
|
47 |
#endif |
e61d98d8d
|
48 |
|
2ae210106
|
49 |
|
e61d98d8d
|
50 |
#endif |