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| 28 | 28 | ||
| 29 | #ifndef __PAGE_H__ |
29 | #ifndef __PAGE_H__ |
| 30 | #define __PAGE_H__ |
30 | #define __PAGE_H__ |
| 31 | 31 | ||
| 32 | #include <arch/types.h> |
32 | #include <arch/types.h> |
| 33 | #include <arch/mm/page.h> |
- | |
| 34 | #include <typedefs.h> |
33 | #include <typedefs.h> |
| 35 | 34 | ||
| - | 35 | #define PAGE_CACHEABLE_SHIFT 0 |
|
| - | 36 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
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| - | 37 | #define PAGE_PRESENT_SHIFT 1 |
|
| - | 38 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
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| - | 39 | #define PAGE_USER_SHIFT 2 |
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| - | 40 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
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| - | 41 | #define PAGE_READ_SHIFT 3 |
|
| - | 42 | #define PAGE_WRITE_SHIFT 4 |
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| - | 43 | #define PAGE_EXEC_SHIFT 5 |
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| - | 44 | ||
| 36 | #define PAGE_NOT_CACHEABLE (0<<0) |
45 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
| 37 | #define PAGE_CACHEABLE (1<<0) |
46 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
| 38 | 47 | ||
| 39 | #define PAGE_PRESENT (0<<1) |
48 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
| 40 | #define PAGE_NOT_PRESENT (1<<1) |
49 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
| 41 | 50 | ||
| 42 | #define PAGE_USER (1<<2) |
51 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
| 43 | #define PAGE_KERNEL (0<<2) |
52 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
| 44 | 53 | ||
| 45 | #define PAGE_READ (1<<3) |
54 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
| 46 | #define PAGE_WRITE (1<<4) |
55 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
| 47 | #define PAGE_EXEC (1<<5) |
56 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
| 48 | 57 | ||
| 49 | /* |
58 | /* |
| 50 | * This is the generic 4-level page table interface. |
59 | * This is the generic 4-level page table interface. |
| 51 | * Architectures are supposed to implement *_ARCH macros. |
60 | * Architectures are supposed to implement *_ARCH macros. |
| 52 | */ |
61 | */ |
| Line 58... | Line 67... | ||
| 58 | #define PTL0_INDEX(vaddr) PTL0_INDEX_ARCH(vaddr) |
67 | #define PTL0_INDEX(vaddr) PTL0_INDEX_ARCH(vaddr) |
| 59 | #define PTL1_INDEX(vaddr) PTL1_INDEX_ARCH(vaddr) |
68 | #define PTL1_INDEX(vaddr) PTL1_INDEX_ARCH(vaddr) |
| 60 | #define PTL2_INDEX(vaddr) PTL2_INDEX_ARCH(vaddr) |
69 | #define PTL2_INDEX(vaddr) PTL2_INDEX_ARCH(vaddr) |
| 61 | #define PTL3_INDEX(vaddr) PTL3_INDEX_ARCH(vaddr) |
70 | #define PTL3_INDEX(vaddr) PTL3_INDEX_ARCH(vaddr) |
| 62 | 71 | ||
| - | 72 | #define GET_PTL0_ADDRESS() GET_PTL0_ADDRESS_ARCH() |
|
| - | 73 | #define SET_PTL0_ADDRESS(ptl0) SET_PTL0_ADDRESS_ARCH(ptl0) |
|
| - | 74 | ||
| 63 | /* |
75 | /* |
| 64 | * These macros traverse the 4-level tree of page tables, |
76 | * These macros traverse the 4-level tree of page tables, |
| 65 | * each descending by one level. |
77 | * each descending by one level. |
| 66 | */ |
78 | */ |
| - | 79 | #define GET_PTL0_ADDRESS() GET_PTL0_ADDRESS_ARCH() |
|
| 67 | #define GET_PTL1_ADDRESS(ptl0, i) GET_PTL1_ADDRESS_ARCH(ptl0, i) |
80 | #define GET_PTL1_ADDRESS(ptl0, i) GET_PTL1_ADDRESS_ARCH(ptl0, i) |
| 68 | #define GET_PTL2_ADDRESS(ptl1, i) GET_PTL2_ADDRESS_ARCH(ptl1, i) |
81 | #define GET_PTL2_ADDRESS(ptl1, i) GET_PTL2_ADDRESS_ARCH(ptl1, i) |
| 69 | #define GET_PTL3_ADDRESS(ptl2, i) GET_PTL3_ADDRESS_ARCH(ptl2, i) |
82 | #define GET_PTL3_ADDRESS(ptl2, i) GET_PTL3_ADDRESS_ARCH(ptl2, i) |
| 70 | #define GET_FRAME_ADDRESS(ptl3, i) GET_FRAME_ADDRESS_ARCH(ptl3, i) |
83 | #define GET_FRAME_ADDRESS(ptl3, i) GET_FRAME_ADDRESS_ARCH(ptl3, i) |
| 71 | 84 | ||
| 72 | /* |
85 | /* |
| 73 | * These macros are provided to change shape of the 4-level |
86 | * These macros are provided to change shape of the 4-level |
| 74 | * tree of page tables on respective level. |
87 | * tree of page tables on respective level. |
| 75 | */ |
88 | */ |
| - | 89 | #define SET_PTL0_ADDRESS(ptl0) SET_PTL0_ADDRESS_ARCH(ptl0) |
|
| 76 | #define SET_PTL1_ADDRESS(ptl0, i, a) SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
90 | #define SET_PTL1_ADDRESS(ptl0, i, a) SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
| 77 | #define SET_PTL2_ADDRESS(ptl1, i, a) SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
91 | #define SET_PTL2_ADDRESS(ptl1, i, a) SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
| 78 | #define SET_PTL3_ADDRESS(ptl2, i, a) SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
92 | #define SET_PTL3_ADDRESS(ptl2, i, a) SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
| 79 | #define SET_FRAME_ADDRESS(ptl3, i, a) SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
93 | #define SET_FRAME_ADDRESS(ptl3, i, a) SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
| 80 | 94 | ||
| 81 | /* |
95 | /* |
| - | 96 | * These macros are provided to query various flags within the page tables. |
|
| - | 97 | */ |
|
| - | 98 | #define GET_PTL1_FLAGS(ptl0, i) GET_PTL1_FLAGS_ARCH(ptl0, i) |
|
| - | 99 | #define GET_PTL2_FLAGS(ptl1, i) GET_PTL2_FLAGS_ARCH(ptl1, i) |
|
| - | 100 | #define GET_PTL3_FLAGS(ptl2, i) GET_PTL3_FLAGS_ARCH(ptl2, i) |
|
| - | 101 | #define GET_FRAME_FLAGS(ptl3, i) GET_FRAME_FLAGS_ARCH(ptl3, i) |
|
| - | 102 | ||
| - | 103 | /* |
|
| 82 | * These macros are provided to set/clear various flags within the page tables. |
104 | * These macros are provided to set/clear various flags within the page tables. |
| 83 | */ |
105 | */ |
| 84 | #define SET_PTL1_FLAGS(ptl0, i, x) SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
106 | #define SET_PTL1_FLAGS(ptl0, i, x) SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
| 85 | #define SET_PTL2_FLAGS(ptl1, i, x) SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
107 | #define SET_PTL2_FLAGS(ptl1, i, x) SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
| 86 | #define SET_PTL3_FLAGS(ptl2, i, x) SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
108 | #define SET_PTL3_FLAGS(ptl2, i, x) SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
| 87 | #define SET_FRAME_FLAGS(ptl3, i, x) SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
109 | #define SET_FRAME_FLAGS(ptl3, i, x) SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
| 88 | 110 | ||
| - | 111 | #include <arch/mm/page.h> |
|
| 89 | 112 | ||
| 90 | extern void page_init(void); |
113 | extern void page_init(void); |
| 91 | extern void map_page_to_frame(__address page, __address frame, int flags, __address root); |
114 | extern void map_page_to_frame(__address page, __address frame, int flags, __address root); |
| 92 | extern void map_structure(__address s, size_t size); |
115 | extern void map_structure(__address s, size_t size); |
| 93 | 116 | ||