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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 |
|
- | 30 | * @{ |
|
- | 31 | */ |
|
- | 32 | /** @file |
|
- | 33 | */ |
|
- | 34 | ||
29 | #ifndef __PAGE_H__ |
35 | #ifndef __PAGE_H__ |
30 | #define __PAGE_H__ |
36 | #define __PAGE_H__ |
31 | 37 | ||
32 | #include <arch/mm/asid.h> |
38 | #include <arch/mm/asid.h> |
33 | #include <arch/types.h> |
39 | #include <arch/types.h> |
34 | #include <typedefs.h> |
40 | #include <typedefs.h> |
35 | #include <memstr.h> |
41 | #include <memstr.h> |
36 | 42 | ||
37 | #define PAGE_CACHEABLE_SHIFT 0 |
43 | #define PAGE_CACHEABLE_SHIFT 0 |
38 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
44 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
39 | #define PAGE_PRESENT_SHIFT 1 |
45 | #define PAGE_PRESENT_SHIFT 1 |
40 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
46 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
41 | #define PAGE_USER_SHIFT 2 |
47 | #define PAGE_USER_SHIFT 2 |
42 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
48 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
43 | #define PAGE_READ_SHIFT 3 |
49 | #define PAGE_READ_SHIFT 3 |
44 | #define PAGE_WRITE_SHIFT 4 |
50 | #define PAGE_WRITE_SHIFT 4 |
45 | #define PAGE_EXEC_SHIFT 5 |
51 | #define PAGE_EXEC_SHIFT 5 |
46 | #define PAGE_GLOBAL_SHIFT 6 |
52 | #define PAGE_GLOBAL_SHIFT 6 |
47 | 53 | ||
48 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
54 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
49 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
55 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
50 | 56 | ||
51 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
57 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
52 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
58 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
53 | 59 | ||
54 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
60 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
55 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
61 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
56 | 62 | ||
57 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
63 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
58 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
64 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
59 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
65 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
60 | 66 | ||
61 | #define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT) |
67 | #define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT) |
62 | 68 | ||
63 | /** Page fault access type. */ |
69 | /** Page fault access type. */ |
64 | enum pf_access { |
70 | enum pf_access { |
65 | PF_ACCESS_READ, |
71 | PF_ACCESS_READ, |
66 | PF_ACCESS_WRITE, |
72 | PF_ACCESS_WRITE, |
67 | PF_ACCESS_EXEC |
73 | PF_ACCESS_EXEC |
68 | }; |
74 | }; |
69 | typedef enum pf_access pf_access_t; |
75 | typedef enum pf_access pf_access_t; |
70 | 76 | ||
71 | /** Operations to manipulate page mappings. */ |
77 | /** Operations to manipulate page mappings. */ |
72 | struct page_mapping_operations { |
78 | struct page_mapping_operations { |
73 | void (* mapping_insert)(as_t *as, __address page, __address frame, int flags); |
79 | void (* mapping_insert)(as_t *as, __address page, __address frame, int flags); |
74 | void (* mapping_remove)(as_t *as, __address page); |
80 | void (* mapping_remove)(as_t *as, __address page); |
75 | pte_t *(* mapping_find)(as_t *as, __address page); |
81 | pte_t *(* mapping_find)(as_t *as, __address page); |
76 | }; |
82 | }; |
77 | typedef struct page_mapping_operations page_mapping_operations_t; |
83 | typedef struct page_mapping_operations page_mapping_operations_t; |
78 | 84 | ||
79 | extern page_mapping_operations_t *page_mapping_operations; |
85 | extern page_mapping_operations_t *page_mapping_operations; |
80 | 86 | ||
81 | extern void page_init(void); |
87 | extern void page_init(void); |
82 | extern void page_table_lock(as_t *as, bool lock); |
88 | extern void page_table_lock(as_t *as, bool lock); |
83 | extern void page_table_unlock(as_t *as, bool unlock); |
89 | extern void page_table_unlock(as_t *as, bool unlock); |
84 | extern void page_mapping_insert(as_t *as, __address page, __address frame, int flags); |
90 | extern void page_mapping_insert(as_t *as, __address page, __address frame, int flags); |
85 | extern void page_mapping_remove(as_t *as, __address page); |
91 | extern void page_mapping_remove(as_t *as, __address page); |
86 | extern pte_t *page_mapping_find(as_t *as, __address page); |
92 | extern pte_t *page_mapping_find(as_t *as, __address page); |
87 | extern pte_t *page_table_create(int flags); |
93 | extern pte_t *page_table_create(int flags); |
88 | extern void page_table_destroy(pte_t *page_table); |
94 | extern void page_table_destroy(pte_t *page_table); |
89 | extern void map_structure(__address s, size_t size); |
95 | extern void map_structure(__address s, size_t size); |
90 | extern __address hw_map(__address physaddr, size_t size); |
96 | extern __address hw_map(__address physaddr, size_t size); |
91 | 97 | ||
92 | #endif |
98 | #endif |
- | 99 | ||
- | 100 | /** @} |
|
- | 101 | */ |
|
- | 102 | ||
93 | 103 |