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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 | * Architectures that use single page hash table for |
31 | * Architectures that use single page hash table for |
32 | * storing page translations must implement it. |
32 | * storing page translations must implement it. |
33 | */ |
33 | */ |
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> |
|
- | 40 | ||
- | 41 | /** Number of slots in page hash table. */ |
|
- | 42 | #define HT_ENTRIES HT_ENTRIES_ARCH |
|
39 | 43 | ||
40 | /** Hash function. |
44 | /** Hash function. |
41 | * |
45 | * |
42 | * @param page Virtual address. Only vpn bits will be used. |
46 | * @param page Virtual address. Only vpn bits will be used. |
43 | * @param asid Address space identifier. |
47 | * @param asid Address space identifier. |
44 | * |
48 | * |
45 | * @return Pointer to hash table typed pte_t *. |
49 | * @return Pointer to hash table typed pte_t *. |
46 | */ |
50 | */ |
47 | #define HT_HASH(page, asid) HT_HASH_ARCH(page, asid) |
51 | #define HT_HASH(page, asid) HT_HASH_ARCH(page, asid) |
48 | 52 | ||
49 | /** Compare PTE with page and asid. |
53 | /** Compare PTE with page and asid. |
50 | * |
54 | * |
51 | * @param page Virtual address. Only vpn bits will be used. |
55 | * @param page Virtual address. Only vpn bits will be used. |
52 | * @param asid Address space identifier. |
56 | * @param asid Address space identifier. |
53 | * @param t PTE. |
57 | * @param t PTE. |
54 | * |
58 | * |
55 | * @return 1 on match, 0 otherwise. |
59 | * @return 1 on match, 0 otherwise. |
56 | */ |
60 | */ |
57 | #define HT_COMPARE(page, asid, t) HT_COMPARE_ARCH(page, asid, t) |
61 | #define HT_COMPARE(page, asid, t) HT_COMPARE_ARCH(page, asid, t) |
58 | 62 | ||
59 | /** Identify empty hash table slots. |
63 | /** Identify empty page hash table slots. |
60 | * |
64 | * |
61 | * @param t Pointer ro hash table typed pte_t *. |
65 | * @param t Pointer ro hash table typed pte_t *. |
62 | * |
66 | * |
63 | * @return 1 if the slot is empty, 0 otherwise. |
67 | * @return 1 if the slot is empty, 0 otherwise. |
64 | */ |
68 | */ |
65 | #define HT_SLOT_EMPTY(t) HT_SLOT_EMPTY_ARCH(t) |
69 | #define HT_SLOT_EMPTY(t) HT_SLOT_EMPTY_ARCH(t) |
66 | 70 | ||
- | 71 | /** Invalidate/empty page hash table slot. |
|
- | 72 | * |
|
- | 73 | * @param t Address of the slot to be invalidated. |
|
- | 74 | */ |
|
- | 75 | #define HT_INVALIDATE_SLOT(t) HT_INVALIDATE_SLOT_ARCH(t) |
|
- | 76 | ||
67 | /** Return next record in collision chain. |
77 | /** Return next record in collision chain. |
68 | * |
78 | * |
69 | * @param t PTE. |
79 | * @param t PTE. |
70 | * |
80 | * |
71 | * @return Successor of PTE or NULL. |
81 | * @return Successor of PTE or NULL. |
72 | */ |
82 | */ |
73 | #define HT_GET_NEXT(t) HT_GET_NEXT_ARCH(t) |
83 | #define HT_GET_NEXT(t) HT_GET_NEXT_ARCH(t) |
74 | 84 | ||
75 | /** Set successor in collision chain. |
85 | /** Set successor in collision chain. |
76 | * |
86 | * |
77 | * @param t PTE. |
87 | * @param t PTE. |
78 | * @param s Successor or NULL. |
88 | * @param s Successor or NULL. |
79 | */ |
89 | */ |
80 | #define HT_SET_NEXT(t, s) HT_SET_NEXT_ARCH(t, s) |
90 | #define HT_SET_NEXT(t, s) HT_SET_NEXT_ARCH(t, s) |
81 | 91 | ||
82 | /** Set page hash table record. |
92 | /** Set page hash table record. |
83 | * |
93 | * |
84 | * @param t PTE. |
94 | * @param t PTE. |
85 | * @param page Virtual address. Only vpn bits will be used. |
95 | * @param page Virtual address. Only vpn bits will be used. |
86 | * @param asid Address space identifier. |
96 | * @param asid Address space identifier. |
87 | * @param frame Physical address. Only pfn bits will be used. |
97 | * @param frame Physical address. Only pfn bits will be used. |
88 | * @param flags Flags. See mm/page.h. |
98 | * @param flags Flags. See mm/page.h. |
89 | */ |
99 | */ |
90 | #define HT_SET_RECORD(t, page, asid, frame, flags) HT_SET_RECORD_ARCH(t, page, asid, frame, flags) |
100 | #define HT_SET_RECORD(t, page, asid, frame, flags) HT_SET_RECORD_ARCH(t, page, asid, frame, flags) |
91 | 101 | ||
- | 102 | ||
92 | extern page_operations_t page_ht_operations; |
103 | extern page_operations_t page_ht_operations; |
- | 104 | extern spinlock_t page_ht_lock; |
|
- | 105 | ||
- | 106 | extern pte_t *page_ht; |
|
- | 107 | ||
- | 108 | extern void ht_invalidate_all(void); |
|
93 | 109 | ||
94 | #endif |
110 | #endif |
95 | 111 |