Rev 116 | Rev 120 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 116 | Rev 119 | ||
|---|---|---|---|
| 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 <arch/mm/page.h> |
33 | #include <arch/mm/page.h> |
| 34 | #include <typedefs.h> |
34 | #include <typedefs.h> |
| 35 | 35 | ||
| 36 | #define PAGE_NOT_CACHEABLE (0<<0) |
36 | #define PAGE_NOT_CACHEABLE (0<<0) |
| 37 | #define PAGE_CACHEABLE (1<<0) |
37 | #define PAGE_CACHEABLE (1<<0) |
| 38 | 38 | ||
| 39 | #define PAGE_PRESENT (0<<1) |
39 | #define PAGE_PRESENT (0<<1) |
| 40 | #define PAGE_NOT_PRESENT (1<<1) |
40 | #define PAGE_NOT_PRESENT (1<<1) |
| 41 | 41 | ||
| 42 | #define PAGE_USER (1<<2) |
42 | #define PAGE_USER (1<<2) |
| 43 | #define PAGE_KERNEL (0<<2) |
43 | #define PAGE_KERNEL (0<<2) |
| 44 | 44 | ||
| 45 | #define PAGE_READ (1<<3) |
45 | #define PAGE_READ (1<<3) |
| 46 | #define PAGE_WRITE (1<<4) |
46 | #define PAGE_WRITE (1<<4) |
| 47 | #define PAGE_EXEC (1<<5) |
47 | #define PAGE_EXEC (1<<5) |
| 48 | 48 | ||
| - | 49 | /* |
|
| - | 50 | * This is the generic 4-level page table interface. |
|
| - | 51 | * Architectures are supposed to implement *_ARCH macros. |
|
| - | 52 | */ |
|
| - | 53 | ||
| - | 54 | /* |
|
| - | 55 | * These macros process vaddr and extract those portions |
|
| - | 56 | * of it that function as indices to respective page tables. |
|
| - | 57 | */ |
|
| - | 58 | #define PTL0_INDEX(vaddr) PTL0_INDEX_ARCH(vaddr) |
|
| - | 59 | #define PTL1_INDEX(vaddr) PTL1_INDEX_ARCH(vaddr) |
|
| - | 60 | #define PTL2_INDEX(vaddr) PTL2_INDEX_ARCH(vaddr) |
|
| - | 61 | #define PTL3_INDEX(vaddr) PTL3_INDEX_ARCH(vaddr) |
|
| - | 62 | ||
| - | 63 | /* |
|
| - | 64 | * These macros traverse the 4-level tree of page tables, |
|
| - | 65 | * each descending by one level. |
|
| - | 66 | */ |
|
| - | 67 | #define GET_PTL1_ADDRESS(ptl0, i) GET_PTL1_ADDRESS_ARCH(ptl0, i) |
|
| - | 68 | #define GET_PTL2_ADDRESS(ptl1, i) GET_PTL2_ADDRESS_ARCH(ptl1, i) |
|
| - | 69 | #define GET_PTL3_ADDRESS(ptl2, i) GET_PTL3_ADDRESS_ARCH(ptl2, i) |
|
| - | 70 | #define GET_FRAME_ADDRESS(ptl3, i) GET_FRAME_ADDRESS_ARCH(ptl3, i) |
|
| - | 71 | ||
| - | 72 | /* |
|
| - | 73 | * These macros are provided to change shape of the 4-level |
|
| - | 74 | * tree of page tables on respective level. |
|
| - | 75 | */ |
|
| - | 76 | #define SET_PTL1_ADDRESS(ptl0, i, a) SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
|
| - | 77 | #define SET_PTL2_ADDRESS(ptl1, i, a) SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
|
| - | 78 | #define SET_PTL3_ADDRESS(ptl2, i, a) SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
|
| - | 79 | #define SET_FRAME_ADDRESS(ptl3, i, a) SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
|
| - | 80 | ||
| - | 81 | /* |
|
| - | 82 | * These macros are provided to set/clear various flags within the page tables. |
|
| - | 83 | */ |
|
| - | 84 | #define SET_PTL1_FLAGS(ptl0, i, x) SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
|
| - | 85 | #define SET_PTL2_FLAGS(ptl1, i, x) SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
|
| - | 86 | #define SET_PTL3_FLAGS(ptl2, i, x) SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
|
| - | 87 | #define SET_FRAME_FLAGS(ptl3, i, x) SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
|
| - | 88 | ||
| - | 89 | ||
| 49 | extern void page_init(void); |
90 | extern void page_init(void); |
| 50 | extern void map_page_to_frame(__address page, __address frame, int flags, __address root); |
91 | extern void map_page_to_frame(__address page, __address frame, int flags, __address root); |
| 51 | extern void map_structure(__address s, size_t size); |
92 | extern void map_structure(__address s, size_t size); |
| 52 | 93 | ||
| 53 | #endif |
94 | #endif |
| 54 | 95 | ||