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| 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 | /** @addtogroup genarchmm |
29 | /** @addtogroup genarchmm |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** |
32 | /** |
| 33 | * @file |
33 | * @file |
| 34 | * @brief This is the generic page hash table interface. |
34 | * @brief This is the generic page hash table interface. |
| 35 | */ |
35 | */ |
| 36 | 36 | ||
| 37 | #ifdef CONFIG_PAGE_HT |
37 | #ifdef CONFIG_PAGE_HT |
| 38 | 38 | ||
| 39 | #ifndef KERN_PAGE_HT_H_ |
39 | #ifndef KERN_PAGE_HT_H_ |
| 40 | #define KERN_PAGE_HT_H_ |
40 | #define KERN_PAGE_HT_H_ |
| 41 | 41 | ||
| 42 | #include <arch/types.h> |
42 | #include <arch/types.h> |
| 43 | #include <mm/as.h> |
43 | #include <mm/as.h> |
| 44 | #include <mm/page.h> |
44 | #include <mm/page.h> |
| 45 | #include <synch/mutex.h> |
45 | #include <synch/mutex.h> |
| 46 | #include <adt/hash_table.h> |
46 | #include <adt/hash_table.h> |
| 47 | 47 | ||
| 48 | #define PAGE_HT_KEYS 2 |
48 | #define PAGE_HT_KEYS 2 |
| 49 | #define KEY_AS 0 |
49 | #define KEY_AS 0 |
| 50 | #define KEY_PAGE 1 |
50 | #define KEY_PAGE 1 |
| 51 | 51 | ||
| 52 | #define PAGE_HT_ENTRIES_BITS 13 |
52 | #define PAGE_HT_ENTRIES_BITS 13 |
| 53 | #define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS) |
53 | #define PAGE_HT_ENTRIES (1 << PAGE_HT_ENTRIES_BITS) |
| 54 | 54 | ||
| - | 55 | /* Macros for querying page hash table PTEs. */ |
|
| 55 | #define PTE_VALID(pte) ((pte) != NULL) |
56 | #define PTE_VALID(pte) ((pte) != NULL) |
| 56 | #define PTE_PRESENT(pte) ((pte)->p != 0) |
57 | #define PTE_PRESENT(pte) ((pte)->p != 0) |
| 57 | #define PTE_GET_FRAME(pte) ((pte)->frame) |
58 | #define PTE_GET_FRAME(pte) ((pte)->frame) |
| 58 | #define PTE_READABLE(pte) 1 |
59 | #define PTE_READABLE(pte) 1 |
| 59 | #define PTE_WRITABLE(pte) ((pte)->w != 0) |
60 | #define PTE_WRITABLE(pte) ((pte)->w != 0) |
| 60 | #define PTE_EXECUTABLE(pte) ((pte)->x != 0) |
61 | #define PTE_EXECUTABLE(pte) ((pte)->x != 0) |
| 61 | 62 | ||
| 62 | extern as_operations_t as_ht_operations; |
63 | extern as_operations_t as_ht_operations; |
| 63 | extern page_mapping_operations_t ht_mapping_operations; |
64 | extern page_mapping_operations_t ht_mapping_operations; |
| 64 | 65 | ||
| 65 | extern mutex_t page_ht_lock; |
66 | extern mutex_t page_ht_lock; |
| 66 | extern hash_table_t page_ht; |
67 | extern hash_table_t page_ht; |
| 67 | extern hash_table_operations_t ht_operations; |
68 | extern hash_table_operations_t ht_operations; |
| 68 | 69 | ||
| 69 | #endif |
70 | #endif |
| 70 | 71 | ||
| 71 | #endif |
72 | #endif |
| 72 | 73 | ||
| 73 | /** @} |
74 | /** @} |
| 74 | */ |
75 | */ |
| 75 | 76 | ||