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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 | /* |
29 | /* |
30 | * This is the generic page hash table interface. |
30 | * This is the generic page hash table interface. |
31 | */ |
31 | */ |
32 | 32 | ||
33 | #ifdef CONFIG_PAGE_HT |
33 | #ifdef CONFIG_PAGE_HT |
34 | 34 | ||
35 | #ifndef __PAGE_HT_H__ |
35 | #ifndef __PAGE_HT_H__ |
36 | #define __PAGE_HT_H__ |
36 | #define __PAGE_HT_H__ |
37 | 37 | ||
38 | #include <mm/page.h> |
38 | #include <mm/page.h> |
39 | #include <typedefs.h> |
39 | #include <typedefs.h> |
40 | #include <arch/types.h> |
40 | #include <arch/types.h> |
41 | #include <adt/list.h> |
41 | #include <adt/list.h> |
42 | #include <adt/hash_table.h> |
42 | #include <adt/hash_table.h> |
43 | 43 | ||
44 | #define PAGE_HT_KEYS 2 |
44 | #define PAGE_HT_KEYS 2 |
45 | #define KEY_AS 0 |
45 | #define KEY_AS 0 |
46 | #define KEY_PAGE 1 |
46 | #define KEY_PAGE 1 |
47 | 47 | ||
48 | #define PAGE_HT_ENTRIES_BITS 13 |
48 | #define PAGE_HT_ENTRIES_BITS 13 |
49 | #define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS) |
49 | #define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS) |
50 | 50 | ||
51 | #define PTE_VALID(pte) ((pte) != NULL) |
51 | #define PTE_VALID(pte) ((pte) != NULL) |
52 | #define PTE_PRESENT(pte) ((pte)->p != 0) |
52 | #define PTE_PRESENT(pte) ((pte)->p != 0) |
53 | #define PTE_GET_FRAME(pte) ((pte)->frame) |
53 | #define PTE_GET_FRAME(pte) ((pte)->frame) |
54 | 54 | ||
55 | #define SET_PTL0_ADDRESS(x) |
55 | #define SET_PTL0_ADDRESS(x) |
56 | 56 | ||
57 | struct pte { |
57 | struct pte { |
58 | link_t link; /**< Page hash table link. */ |
58 | link_t link; /**< Page hash table link. */ |
59 | as_t *as; /**< Address space. */ |
59 | as_t *as; /**< Address space. */ |
60 | __address page; /**< Virtual memory page. */ |
60 | __address page; /**< Virtual memory page. */ |
61 | __address frame; /**< Physical memory frame. */ |
61 | __address frame; /**< Physical memory frame. */ |
62 | unsigned g : 1; /**< Global page. */ |
62 | unsigned g : 1; /**< Global page. */ |
63 | unsigned x : 1; /**< Execute. */ |
63 | unsigned x : 1; /**< Execute. */ |
64 | unsigned w : 1; /**< Writable. */ |
64 | unsigned w : 1; /**< Writable. */ |
65 | unsigned k : 1; /**< Kernel privileges required. */ |
65 | unsigned k : 1; /**< Kernel privileges required. */ |
66 | unsigned c : 1; /**< Cacheable. */ |
66 | unsigned c : 1; /**< Cacheable. */ |
67 | unsigned a : 1; /**< Accessed. */ |
67 | unsigned a : 1; /**< Accessed. */ |
68 | unsigned d : 1; /**< Dirty. */ |
68 | unsigned d : 1; /**< Dirty. */ |
69 | unsigned p : 1; /**< Present. */ |
69 | unsigned p : 1; /**< Present. */ |
70 | }; |
70 | }; |
71 | 71 | ||
72 | extern page_mapping_operations_t ht_mapping_operations; |
72 | extern page_mapping_operations_t ht_mapping_operations; |
73 | extern spinlock_t page_ht_lock; |
73 | extern mutex_t page_ht_lock; |
74 | extern hash_table_t page_ht; |
74 | extern hash_table_t page_ht; |
75 | extern hash_table_operations_t ht_operations; |
75 | extern hash_table_operations_t ht_operations; |
76 | 76 | ||
77 | #endif |
77 | #endif |
78 | 78 | ||
79 | #endif |
79 | #endif |
80 | 80 |