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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 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | /* |
35 | /* |
36 | * This is the generic page hash table interface. |
36 | * This is the generic page hash table interface. |
37 | */ |
37 | */ |
38 | 38 | ||
39 | #ifdef CONFIG_PAGE_HT |
39 | #ifdef CONFIG_PAGE_HT |
40 | 40 | ||
41 | #ifndef __PAGE_HT_H__ |
41 | #ifndef __PAGE_HT_H__ |
42 | #define __PAGE_HT_H__ |
42 | #define __PAGE_HT_H__ |
43 | 43 | ||
44 | #include <mm/page.h> |
44 | #include <mm/page.h> |
45 | #include <typedefs.h> |
45 | #include <typedefs.h> |
46 | #include <arch/types.h> |
46 | #include <arch/types.h> |
47 | #include <adt/list.h> |
47 | #include <adt/list.h> |
48 | #include <adt/hash_table.h> |
48 | #include <adt/hash_table.h> |
49 | 49 | ||
50 | #define PAGE_HT_KEYS 2 |
50 | #define PAGE_HT_KEYS 2 |
51 | #define KEY_AS 0 |
51 | #define KEY_AS 0 |
52 | #define KEY_PAGE 1 |
52 | #define KEY_PAGE 1 |
53 | 53 | ||
54 | #define PAGE_HT_ENTRIES_BITS 13 |
54 | #define PAGE_HT_ENTRIES_BITS 13 |
55 | #define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS) |
55 | #define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS) |
56 | 56 | ||
57 | #define PTE_VALID(pte) ((pte) != NULL) |
57 | #define PTE_VALID(pte) ((pte) != NULL) |
58 | #define PTE_PRESENT(pte) ((pte)->p != 0) |
58 | #define PTE_PRESENT(pte) ((pte)->p != 0) |
59 | #define PTE_GET_FRAME(pte) ((pte)->frame) |
59 | #define PTE_GET_FRAME(pte) ((pte)->frame) |
60 | #define PTE_READABLE(pte) 1 |
60 | #define PTE_READABLE(pte) 1 |
61 | #define PTE_WRITABLE(pte) ((pte)->w != 0) |
61 | #define PTE_WRITABLE(pte) ((pte)->w != 0) |
62 | #define PTE_EXECUTABLE(pte) ((pte)->x != 0) |
62 | #define PTE_EXECUTABLE(pte) ((pte)->x != 0) |
63 | 63 | ||
64 | #define SET_PTL0_ADDRESS(x) |
64 | #define SET_PTL0_ADDRESS(x) |
65 | 65 | ||
66 | struct pte { |
66 | struct pte { |
67 | link_t link; /**< Page hash table link. */ |
67 | link_t link; /**< Page hash table link. */ |
68 | as_t *as; /**< Address space. */ |
68 | as_t *as; /**< Address space. */ |
69 | __address page; /**< Virtual memory page. */ |
69 | uintptr_t page; /**< Virtual memory page. */ |
70 | __address frame; /**< Physical memory frame. */ |
70 | uintptr_t frame; /**< Physical memory frame. */ |
71 | unsigned g : 1; /**< Global page. */ |
71 | unsigned g : 1; /**< Global page. */ |
72 | unsigned x : 1; /**< Execute. */ |
72 | unsigned x : 1; /**< Execute. */ |
73 | unsigned w : 1; /**< Writable. */ |
73 | unsigned w : 1; /**< Writable. */ |
74 | unsigned k : 1; /**< Kernel privileges required. */ |
74 | unsigned k : 1; /**< Kernel privileges required. */ |
75 | unsigned c : 1; /**< Cacheable. */ |
75 | unsigned c : 1; /**< Cacheable. */ |
76 | unsigned a : 1; /**< Accessed. */ |
76 | unsigned a : 1; /**< Accessed. */ |
77 | unsigned d : 1; /**< Dirty. */ |
77 | unsigned d : 1; /**< Dirty. */ |
78 | unsigned p : 1; /**< Present. */ |
78 | unsigned p : 1; /**< Present. */ |
79 | }; |
79 | }; |
80 | 80 | ||
81 | extern page_mapping_operations_t ht_mapping_operations; |
81 | extern page_mapping_operations_t ht_mapping_operations; |
82 | extern mutex_t page_ht_lock; |
82 | extern mutex_t page_ht_lock; |
83 | extern hash_table_t page_ht; |
83 | extern hash_table_t page_ht; |
84 | extern hash_table_operations_t ht_operations; |
84 | extern hash_table_operations_t ht_operations; |
85 | 85 | ||
86 | #endif |
86 | #endif |
87 | 87 | ||
88 | #endif |
88 | #endif |
89 | 89 | ||
90 | /** @} |
90 | /** @} |
91 | */ |
91 | */ |
92 | 92 | ||
93 | 93 |