Rev 793 | Rev 977 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 793 | Rev 902 | ||
|---|---|---|---|
| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2006 Jakub Jermar |
2 | * Copyright (C) 2006 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 | /* |
29 | /* |
| 30 | * This is the generic page hash table interface. |
30 | * This is the generic page hash table interface. |
| 31 | */ |
31 | */ |
| 32 | 32 | ||
| 33 | #ifndef __PAGE_HT_H__ |
33 | #ifndef __PAGE_HT_H__ |
| 34 | #define __PAGE_HT_H__ |
34 | #define __PAGE_HT_H__ |
| 35 | 35 | ||
| 36 | #include <mm/page.h> |
36 | #include <mm/page.h> |
| 37 | #include <typedefs.h> |
37 | #include <typedefs.h> |
| 38 | #include <arch/types.h> |
38 | #include <arch/types.h> |
| 39 | #include <adt/list.h> |
39 | #include <adt/list.h> |
| 40 | #include <adt/hash_table.h> |
40 | #include <adt/hash_table.h> |
| 41 | 41 | ||
| 42 | #define PAGE_HT_KEYS 2 |
42 | #define PAGE_HT_KEYS 2 |
| 43 | #define KEY_AS 0 |
43 | #define KEY_AS 0 |
| 44 | #define KEY_PAGE 1 |
44 | #define KEY_PAGE 1 |
| 45 | 45 | ||
| 46 | #define PAGE_HT_ENTRIES_BITS 13 |
46 | #define PAGE_HT_ENTRIES_BITS 13 |
| 47 | #define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS) |
47 | #define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS) |
| 48 | 48 | ||
| 49 | struct pte { |
49 | struct pte { |
| 50 | link_t link; /**< Page hash table link. */ |
50 | link_t link; /**< Page hash table link. */ |
| 51 | as_t *as; /**< Address space. */ |
51 | as_t *as; /**< Address space. */ |
| 52 | __address page; /**< Virtual memory page. */ |
52 | __address page; /**< Virtual memory page. */ |
| 53 | __address frame; /**< Physical memory frame. */ |
53 | __address frame; /**< Physical memory frame. */ |
| 54 | int flags; |
54 | unsigned g : 1; /**< Global page. */ |
| - | 55 | unsigned x : 1; /**< Execute. */ |
|
| - | 56 | unsigned w : 1; /**< Writable. */ |
|
| - | 57 | unsigned k : 1; /**< Kernel privileges required. */ |
|
| - | 58 | unsigned c : 1; /**< Cacheable. */ |
|
| 55 | unsigned a : 1; /**< Accessed. */ |
59 | unsigned a : 1; /**< Accessed. */ |
| 56 | unsigned d : 1; /**< Dirty. */ |
60 | unsigned d : 1; /**< Dirty. */ |
| 57 | unsigned p : 1; /**< Present. */ |
61 | unsigned p : 1; /**< Present. */ |
| 58 | }; |
62 | }; |
| 59 | 63 | ||
| 60 | extern page_mapping_operations_t ht_mapping_operations; |
64 | extern page_mapping_operations_t ht_mapping_operations; |
| 61 | extern spinlock_t page_ht_lock; |
65 | extern spinlock_t page_ht_lock; |
| 62 | extern hash_table_t page_ht; |
66 | extern hash_table_t page_ht; |
| 63 | extern hash_table_operations_t ht_operations; |
67 | extern hash_table_operations_t ht_operations; |
| 64 | 68 | ||
| 65 | #endif |
69 | #endif |
| 66 | 70 | ||