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Line 46... | Line 46... | ||
46 | page_operations_t *page_operations = NULL; |
46 | page_operations_t *page_operations = NULL; |
47 | 47 | ||
48 | void page_init(void) |
48 | void page_init(void) |
49 | { |
49 | { |
50 | page_arch_init(); |
50 | page_arch_init(); |
51 | page_mapping_insert(AS_KERNEL, 0x0, 0x0, PAGE_NOT_PRESENT, 0); |
- | |
52 | } |
51 | } |
53 | 52 | ||
54 | /** Map memory structure |
53 | /** Map memory structure |
55 | * |
54 | * |
56 | * Identity-map memory structure |
55 | * Identity-map memory structure |
Line 66... | Line 65... | ||
66 | 65 | ||
67 | length = size + (s - (s & ~(PAGE_SIZE-1))); |
66 | length = size + (s - (s & ~(PAGE_SIZE-1))); |
68 | cnt = length/PAGE_SIZE + (length%PAGE_SIZE>0); |
67 | cnt = length/PAGE_SIZE + (length%PAGE_SIZE>0); |
69 | 68 | ||
70 | for (i = 0; i < cnt; i++) |
69 | for (i = 0; i < cnt; i++) |
71 | page_mapping_insert(AS_KERNEL, s + i*PAGE_SIZE, s + i*PAGE_SIZE, PAGE_NOT_CACHEABLE, 0); |
70 | page_mapping_insert(AS_KERNEL, s + i*PAGE_SIZE, s + i*PAGE_SIZE, PAGE_NOT_CACHEABLE); |
72 | 71 | ||
73 | } |
72 | } |
74 | 73 | ||
75 | /** Map page to frame |
74 | /** Map page to frame |
76 | * |
75 | * |
77 | * Map virtual address 'page' to physical address 'frame' |
76 | * Map virtual address 'page' to physical address 'frame' |
78 | * using 'flags'. Allocate and setup any missing page tables. |
77 | * using 'flags'. Allocate and setup any missing page tables. |
79 | * |
78 | * |
- | 79 | * The address space must be locked and interrupts must be disabled. |
|
- | 80 | * |
|
80 | * @param as Address space to wich page belongs. Must be locked prior the call. |
81 | * @param as Address space to wich page belongs.. |
81 | * @param page Virtual address of the page to be mapped. |
82 | * @param page Virtual address of the page to be mapped. |
82 | * @param frame Physical address of memory frame to which the mapping is done. |
83 | * @param frame Physical address of memory frame to which the mapping is done. |
83 | * @param flags Flags to be used for mapping. |
84 | * @param flags Flags to be used for mapping. |
84 | * @param root Explicit PTL0 address. |
- | |
85 | */ |
85 | */ |
86 | void page_mapping_insert(as_t *as, __address page, __address frame, int flags, __address root) |
86 | void page_mapping_insert(as_t *as, __address page, __address frame, int flags) |
87 | { |
87 | { |
88 | ASSERT(page_operations); |
88 | ASSERT(page_operations); |
89 | ASSERT(page_operations->mapping_insert); |
89 | ASSERT(page_operations->mapping_insert); |
90 | 90 | ||
91 | page_operations->mapping_insert(as, page, frame, flags, root); |
91 | page_operations->mapping_insert(as, page, frame, flags); |
92 | } |
92 | } |
93 | 93 | ||
94 | /** Find mapping for virtual page |
94 | /** Find mapping for virtual page |
95 | * |
95 | * |
96 | * Find mapping for virtual page. |
96 | * Find mapping for virtual page. |
97 | * |
97 | * |
- | 98 | * The address space must be locked and interrupts must be disabled. |
|
- | 99 | * |
|
98 | * @param as Address space to wich page belongs must be locked prior the call. |
100 | * @param as Address space to wich page belongs. |
99 | * @param page Virtual page. |
101 | * @param page Virtual page. |
100 | * @param root PTL0 address if non-zero. |
- | |
101 | * |
102 | * |
102 | * @return NULL if there is no such mapping; requested mapping otherwise. |
103 | * @return NULL if there is no such mapping; requested mapping otherwise. |
103 | */ |
104 | */ |
104 | pte_t *page_mapping_find(as_t *as, __address page, __address root) |
105 | pte_t *page_mapping_find(as_t *as, __address page) |
105 | { |
106 | { |
106 | ASSERT(page_operations); |
107 | ASSERT(page_operations); |
107 | ASSERT(page_operations->mapping_find); |
108 | ASSERT(page_operations->mapping_find); |
108 | 109 | ||
109 | return page_operations->mapping_find(as, page, root); |
110 | return page_operations->mapping_find(as, page); |
110 | } |
111 | } |