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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 generic interface for managing |
30 | * This is generic interface for managing |
| 31 | * Address Space IDentifiers (ASIDs). |
31 | * Address Space IDentifiers (ASIDs). |
| 32 | */ |
32 | */ |
| 33 | 33 | ||
| 34 | #ifndef __ASID_H__ |
34 | #ifndef __ASID_H__ |
| 35 | #define __ASID_H__ |
35 | #define __ASID_H__ |
| 36 | 36 | ||
| 37 | #include <arch/mm/asid.h> |
37 | #include <arch/mm/asid.h> |
| 38 | #include <typedefs.h> |
38 | #include <typedefs.h> |
| 39 | 39 | ||
| 40 | #define ASID_KERNEL 0 |
40 | #define ASID_KERNEL 0 |
| 41 | #define ASID_INVALID 1 |
41 | #define ASID_INVALID 1 |
| 42 | #define ASID_START 2 |
42 | #define ASID_START 2 |
| 43 | #define ASID_MAX ASID_MAX_ARCH |
43 | #define ASID_MAX ASID_MAX_ARCH |
| 44 | 44 | ||
| 45 | #define ASIDS_ALLOCABLE ((ASID_MAX+1)-ASID_START) |
45 | #define ASIDS_ALLOCABLE ((ASID_MAX+1)-ASID_START) |
| 46 | 46 | ||
| 47 | extern spinlock_t asidlock; |
47 | extern spinlock_t asidlock; |
| 48 | extern link_t as_with_asid_head; |
48 | extern link_t as_with_asid_head; |
| 49 | 49 | ||
| 50 | extern asid_t asid_get(void); |
50 | extern asid_t asid_get(void); |
| 51 | extern void asid_put(asid_t asid); |
51 | extern void asid_put(asid_t asid); |
| 52 | 52 | ||
| 53 | #ifndef asid_install |
53 | #ifndef asid_install |
| 54 | extern void asid_install(as_t *as); |
54 | extern void asid_install(as_t *as); |
| 55 | #endif /* !def asid_install */ |
55 | #endif /* !def asid_install */ |
| 56 | 56 | ||
| 57 | #define asid_find_free() ASID_START |
57 | #ifndef asid_find_free |
| - | 58 | extern asid_t asid_find_free(void); |
|
| - | 59 | #endif /* !def asid_find_free */ |
|
| - | 60 | ||
| 58 | #define asid_put_arch(x) |
61 | #ifndef asid_put_arch |
| - | 62 | extern void asid_put_arch(asid_t asid); |
|
| - | 63 | #endif /* !def asid_put_arch */ |
|
| 59 | 64 | ||
| 60 | #endif |
65 | #endif |
| 61 | 66 | ||