Rev 826 | Rev 965 | Go to most recent revision | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 826 | Rev 955 | ||
|---|---|---|---|
| 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 | #ifndef __PAGE_H__ |
29 | #ifndef __PAGE_H__ |
| 30 | #define __PAGE_H__ |
30 | #define __PAGE_H__ |
| 31 | 31 | ||
| 32 | #include <arch/mm/asid.h> |
32 | #include <arch/mm/asid.h> |
| 33 | #include <arch/types.h> |
33 | #include <arch/types.h> |
| 34 | #include <typedefs.h> |
34 | #include <typedefs.h> |
| - | 35 | #include <memstr.h> |
|
| 35 | 36 | ||
| 36 | #define PAGE_CACHEABLE_SHIFT 0 |
37 | #define PAGE_CACHEABLE_SHIFT 0 |
| 37 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
38 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
| 38 | #define PAGE_PRESENT_SHIFT 1 |
39 | #define PAGE_PRESENT_SHIFT 1 |
| 39 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
40 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
| 40 | #define PAGE_USER_SHIFT 2 |
41 | #define PAGE_USER_SHIFT 2 |
| 41 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
42 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
| 42 | #define PAGE_READ_SHIFT 3 |
43 | #define PAGE_READ_SHIFT 3 |
| 43 | #define PAGE_WRITE_SHIFT 4 |
44 | #define PAGE_WRITE_SHIFT 4 |
| 44 | #define PAGE_EXEC_SHIFT 5 |
45 | #define PAGE_EXEC_SHIFT 5 |
| 45 | #define PAGE_GLOBAL_SHIFT 6 |
46 | #define PAGE_GLOBAL_SHIFT 6 |
| 46 | 47 | ||
| 47 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
48 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
| 48 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
49 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
| 49 | 50 | ||
| 50 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
51 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
| 51 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
52 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
| 52 | 53 | ||
| 53 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
54 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
| 54 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
55 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
| 55 | 56 | ||
| 56 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
57 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
| 57 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
58 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
| 58 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
59 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
| 59 | 60 | ||
| 60 | #define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT) |
61 | #define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT) |
| 61 | 62 | ||
| - | 63 | ||
| - | 64 | /* TODO - check that userspace is OK, platform specific functions etc */ |
|
| - | 65 | static inline void copy_to_uspace(void *dst, void *src, count_t cnt) |
|
| - | 66 | { |
|
| - | 67 | memcpy(dst, src, cnt); |
|
| - | 68 | } |
|
| - | 69 | ||
| - | 70 | static inline void copy_to_kernel(void *dst, void *src, count_t cnt) |
|
| - | 71 | { |
|
| - | 72 | memcpy(dst, src, cnt); |
|
| - | 73 | } |
|
| - | 74 | ||
| 62 | /** Operations to manipulate page mappings. */ |
75 | /** Operations to manipulate page mappings. */ |
| 63 | struct page_mapping_operations { |
76 | struct page_mapping_operations { |
| 64 | void (* mapping_insert)(as_t *as, __address page, __address frame, int flags); |
77 | void (* mapping_insert)(as_t *as, __address page, __address frame, int flags); |
| 65 | void (* mapping_remove)(as_t *as, __address page); |
78 | void (* mapping_remove)(as_t *as, __address page); |
| 66 | pte_t *(* mapping_find)(as_t *as, __address page); |
79 | pte_t *(* mapping_find)(as_t *as, __address page); |
| 67 | }; |
80 | }; |
| 68 | typedef struct page_mapping_operations page_mapping_operations_t; |
81 | typedef struct page_mapping_operations page_mapping_operations_t; |
| 69 | 82 | ||
| 70 | extern page_mapping_operations_t *page_mapping_operations; |
83 | extern page_mapping_operations_t *page_mapping_operations; |
| 71 | 84 | ||
| 72 | extern void page_init(void); |
85 | extern void page_init(void); |
| 73 | extern void page_mapping_insert(as_t *as, __address page, __address frame, int flags); |
86 | extern void page_mapping_insert(as_t *as, __address page, __address frame, int flags); |
| 74 | extern void page_mapping_remove(as_t *as, __address page); |
87 | extern void page_mapping_remove(as_t *as, __address page); |
| 75 | extern pte_t *page_mapping_find(as_t *as, __address page); |
88 | extern pte_t *page_mapping_find(as_t *as, __address page); |
| 76 | extern pte_t *page_table_create(int flags); |
89 | extern pte_t *page_table_create(int flags); |
| 77 | extern void map_structure(__address s, size_t size); |
90 | extern void map_structure(__address s, size_t size); |
| 78 | 91 | ||
| 79 | #endif |
92 | #endif |
| 80 | 93 | ||