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1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup genericmm |
29 | /** @addtogroup genericmm |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_PAGE_H_ |
35 | #ifndef KERN_PAGE_H_ |
36 | #define KERN_PAGE_H_ |
36 | #define KERN_PAGE_H_ |
37 | 37 | ||
38 | #include <arch/mm/asid.h> |
- | |
39 | #include <arch/types.h> |
38 | #include <arch/types.h> |
40 | #include <typedefs.h> |
39 | #include <mm/as.h> |
41 | #include <memstr.h> |
40 | #include <memstr.h> |
42 | 41 | ||
43 | #define PAGE_CACHEABLE_SHIFT 0 |
- | |
44 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
- | |
45 | #define PAGE_PRESENT_SHIFT 1 |
- | |
46 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
- | |
47 | #define PAGE_USER_SHIFT 2 |
- | |
48 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
- | |
49 | #define PAGE_READ_SHIFT 3 |
- | |
50 | #define PAGE_WRITE_SHIFT 4 |
- | |
51 | #define PAGE_EXEC_SHIFT 5 |
- | |
52 | #define PAGE_GLOBAL_SHIFT 6 |
- | |
53 | - | ||
54 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
- | |
55 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
- | |
56 | - | ||
57 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
- | |
58 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
- | |
59 | - | ||
60 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
- | |
61 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
- | |
62 | - | ||
63 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
- | |
64 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
- | |
65 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
- | |
66 | - | ||
67 | #define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT) |
- | |
68 | - | ||
69 | - | ||
70 | /** |
42 | /** |
71 | * Macro for computing page color. |
43 | * Macro for computing page color. |
72 | */ |
44 | */ |
73 | #define PAGE_COLOR(va) (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1)) |
45 | #define PAGE_COLOR(va) (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1)) |
74 | 46 | ||
75 | /** Page fault access type. */ |
- | |
76 | enum pf_access { |
- | |
77 | PF_ACCESS_READ, |
- | |
78 | PF_ACCESS_WRITE, |
- | |
79 | PF_ACCESS_EXEC |
- | |
80 | }; |
- | |
81 | typedef enum pf_access pf_access_t; |
- | |
82 | - | ||
83 | /** Operations to manipulate page mappings. */ |
47 | /** Operations to manipulate page mappings. */ |
84 | struct page_mapping_operations { |
48 | typedef struct { |
85 | void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, int |
49 | void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, |
86 | flags); |
50 | int flags); |
87 | void (* mapping_remove)(as_t *as, uintptr_t page); |
51 | void (* mapping_remove)(as_t *as, uintptr_t page); |
88 | pte_t *(* mapping_find)(as_t *as, uintptr_t page); |
52 | pte_t *(* mapping_find)(as_t *as, uintptr_t page); |
89 | }; |
- | |
90 | typedef struct page_mapping_operations page_mapping_operations_t; |
53 | } page_mapping_operations_t; |
91 | 54 | ||
92 | extern page_mapping_operations_t *page_mapping_operations; |
55 | extern page_mapping_operations_t *page_mapping_operations; |
93 | 56 | ||
94 | extern void page_init(void); |
57 | extern void page_init(void); |
95 | extern void page_table_lock(as_t *as, bool lock); |
58 | extern void page_table_lock(as_t *as, bool lock); |
96 | extern void page_table_unlock(as_t *as, bool unlock); |
59 | extern void page_table_unlock(as_t *as, bool unlock); |
97 | extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, int |
60 | extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, |
98 | flags); |
61 | int flags); |
99 | extern void page_mapping_remove(as_t *as, uintptr_t page); |
62 | extern void page_mapping_remove(as_t *as, uintptr_t page); |
100 | extern pte_t *page_mapping_find(as_t *as, uintptr_t page); |
63 | extern pte_t *page_mapping_find(as_t *as, uintptr_t page); |
101 | extern pte_t *page_table_create(int flags); |
64 | extern pte_t *page_table_create(int flags); |
102 | extern void page_table_destroy(pte_t *page_table); |
65 | extern void page_table_destroy(pte_t *page_table); |
103 | extern void map_structure(uintptr_t s, size_t size); |
66 | extern void map_structure(uintptr_t s, size_t size); |
104 | extern uintptr_t hw_map(uintptr_t physaddr, size_t size); |
67 | extern uintptr_t hw_map(uintptr_t physaddr, size_t size); |
105 | 68 | ||
106 | #endif |
69 | #endif |
107 | 70 | ||
108 | /** @} |
71 | /** @} |
109 | */ |
72 | */ |
110 | 73 |