Rev 492 | Rev 532 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 492 | Rev 501 | ||
---|---|---|---|
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/types.h> |
32 | #include <arch/types.h> |
33 | #include <typedefs.h> |
33 | #include <typedefs.h> |
34 | 34 | ||
35 | #define PAGE_CACHEABLE_SHIFT 0 |
35 | #define PAGE_CACHEABLE_SHIFT 0 |
36 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
36 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
37 | #define PAGE_PRESENT_SHIFT 1 |
37 | #define PAGE_PRESENT_SHIFT 1 |
38 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
38 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
39 | #define PAGE_USER_SHIFT 2 |
39 | #define PAGE_USER_SHIFT 2 |
40 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
40 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
41 | #define PAGE_READ_SHIFT 3 |
41 | #define PAGE_READ_SHIFT 3 |
42 | #define PAGE_WRITE_SHIFT 4 |
42 | #define PAGE_WRITE_SHIFT 4 |
43 | #define PAGE_EXEC_SHIFT 5 |
43 | #define PAGE_EXEC_SHIFT 5 |
44 | 44 | ||
45 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
45 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
46 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
46 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
47 | 47 | ||
48 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
48 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
49 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
49 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
50 | 50 | ||
51 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
51 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
52 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
52 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
53 | 53 | ||
54 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
54 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
55 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
55 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
56 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
56 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
57 | 57 | ||
58 | /* |
58 | /* |
59 | * This is the generic 4-level page table interface. |
59 | * This is the generic 4-level page table interface. |
60 | * Architectures are supposed to implement *_ARCH macros. |
60 | * Architectures are supposed to implement *_ARCH macros. |
61 | */ |
61 | */ |
62 | 62 | ||
63 | /* |
63 | /* |
64 | * These macros process vaddr and extract those portions |
64 | * These macros process vaddr and extract those portions |
65 | * of it that function as indices to respective page tables. |
65 | * of it that function as indices to respective page tables. |
66 | */ |
66 | */ |
67 | #define PTL0_INDEX(vaddr) PTL0_INDEX_ARCH(vaddr) |
67 | #define PTL0_INDEX(vaddr) PTL0_INDEX_ARCH(vaddr) |
68 | #define PTL1_INDEX(vaddr) PTL1_INDEX_ARCH(vaddr) |
68 | #define PTL1_INDEX(vaddr) PTL1_INDEX_ARCH(vaddr) |
69 | #define PTL2_INDEX(vaddr) PTL2_INDEX_ARCH(vaddr) |
69 | #define PTL2_INDEX(vaddr) PTL2_INDEX_ARCH(vaddr) |
70 | #define PTL3_INDEX(vaddr) PTL3_INDEX_ARCH(vaddr) |
70 | #define PTL3_INDEX(vaddr) PTL3_INDEX_ARCH(vaddr) |
71 | 71 | ||
72 | #define GET_PTL0_ADDRESS() GET_PTL0_ADDRESS_ARCH() |
72 | #define GET_PTL0_ADDRESS() GET_PTL0_ADDRESS_ARCH() |
73 | #define SET_PTL0_ADDRESS(ptl0) SET_PTL0_ADDRESS_ARCH(ptl0) |
73 | #define SET_PTL0_ADDRESS(ptl0) SET_PTL0_ADDRESS_ARCH(ptl0) |
74 | 74 | ||
75 | /* |
75 | /* |
76 | * These macros traverse the 4-level tree of page tables, |
76 | * These macros traverse the 4-level tree of page tables, |
77 | * each descending by one level. |
77 | * each descending by one level. |
78 | */ |
78 | */ |
79 | #define GET_PTL1_ADDRESS(ptl0, i) GET_PTL1_ADDRESS_ARCH(ptl0, i) |
79 | #define GET_PTL1_ADDRESS(ptl0, i) GET_PTL1_ADDRESS_ARCH(ptl0, i) |
80 | #define GET_PTL2_ADDRESS(ptl1, i) GET_PTL2_ADDRESS_ARCH(ptl1, i) |
80 | #define GET_PTL2_ADDRESS(ptl1, i) GET_PTL2_ADDRESS_ARCH(ptl1, i) |
81 | #define GET_PTL3_ADDRESS(ptl2, i) GET_PTL3_ADDRESS_ARCH(ptl2, i) |
81 | #define GET_PTL3_ADDRESS(ptl2, i) GET_PTL3_ADDRESS_ARCH(ptl2, i) |
82 | #define GET_FRAME_ADDRESS(ptl3, i) GET_FRAME_ADDRESS_ARCH(ptl3, i) |
82 | #define GET_FRAME_ADDRESS(ptl3, i) GET_FRAME_ADDRESS_ARCH(ptl3, i) |
83 | 83 | ||
84 | /* |
84 | /* |
85 | * These macros are provided to change shape of the 4-level |
85 | * These macros are provided to change shape of the 4-level |
86 | * tree of page tables on respective level. |
86 | * tree of page tables on respective level. |
87 | */ |
87 | */ |
88 | #define SET_PTL1_ADDRESS(ptl0, i, a) SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
88 | #define SET_PTL1_ADDRESS(ptl0, i, a) SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
89 | #define SET_PTL2_ADDRESS(ptl1, i, a) SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
89 | #define SET_PTL2_ADDRESS(ptl1, i, a) SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
90 | #define SET_PTL3_ADDRESS(ptl2, i, a) SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
90 | #define SET_PTL3_ADDRESS(ptl2, i, a) SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
91 | #define SET_FRAME_ADDRESS(ptl3, i, a) SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
91 | #define SET_FRAME_ADDRESS(ptl3, i, a) SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
92 | 92 | ||
93 | /* |
93 | /* |
94 | * These macros are provided to query various flags within the page tables. |
94 | * These macros are provided to query various flags within the page tables. |
95 | */ |
95 | */ |
96 | #define GET_PTL1_FLAGS(ptl0, i) GET_PTL1_FLAGS_ARCH(ptl0, i) |
96 | #define GET_PTL1_FLAGS(ptl0, i) GET_PTL1_FLAGS_ARCH(ptl0, i) |
97 | #define GET_PTL2_FLAGS(ptl1, i) GET_PTL2_FLAGS_ARCH(ptl1, i) |
97 | #define GET_PTL2_FLAGS(ptl1, i) GET_PTL2_FLAGS_ARCH(ptl1, i) |
98 | #define GET_PTL3_FLAGS(ptl2, i) GET_PTL3_FLAGS_ARCH(ptl2, i) |
98 | #define GET_PTL3_FLAGS(ptl2, i) GET_PTL3_FLAGS_ARCH(ptl2, i) |
99 | #define GET_FRAME_FLAGS(ptl3, i) GET_FRAME_FLAGS_ARCH(ptl3, i) |
99 | #define GET_FRAME_FLAGS(ptl3, i) GET_FRAME_FLAGS_ARCH(ptl3, i) |
100 | 100 | ||
101 | /* |
101 | /* |
102 | * These macros are provided to set/clear various flags within the page tables. |
102 | * These macros are provided to set/clear various flags within the page tables. |
103 | */ |
103 | */ |
104 | #define SET_PTL1_FLAGS(ptl0, i, x) SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
104 | #define SET_PTL1_FLAGS(ptl0, i, x) SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
105 | #define SET_PTL2_FLAGS(ptl1, i, x) SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
105 | #define SET_PTL2_FLAGS(ptl1, i, x) SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
106 | #define SET_PTL3_FLAGS(ptl2, i, x) SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
106 | #define SET_PTL3_FLAGS(ptl2, i, x) SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
107 | #define SET_FRAME_FLAGS(ptl3, i, x) SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
107 | #define SET_FRAME_FLAGS(ptl3, i, x) SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
108 | 108 | ||
109 | extern void page_init(void); |
109 | extern void page_init(void); |
110 | extern void page_mapping_insert(__address page, __address frame, int flags, __address root); |
110 | extern void page_mapping_insert(__address page, __address frame, int flags, __address root); |
111 | extern pte_t *page_mapping_find(__address page, __address root); |
111 | extern pte_t *page_mapping_find(__address page, __address root); |
112 | extern void map_structure(__address s, size_t size); |
112 | extern void map_structure(__address s, size_t size); |
113 | 113 | ||
114 | #endif |
114 | #endif |
115 | 115 |