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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2006 Martin Decky |
2 | * Copyright (C) 2006 Martin Decky |
| 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 | #include <mm/tlb.h> |
29 | #include <mm/tlb.h> |
| 30 | 30 | ||
| 31 | 31 | ||
| 32 | /** Initialize Page Hash Table. |
32 | /** Initialize Page Hash Table. |
| 33 | * |
33 | * |
| 34 | * Setup the Page Hash Table with no entries. |
34 | * Setup the Page Hash Table with no entries. |
| 35 | * |
35 | * |
| 36 | */ |
36 | */ |
| 37 | void tlb_arch_init(void) |
37 | void tlb_arch_init(void) |
| 38 | { |
38 | { |
| - | 39 | tlb_invalidate_all(); |
|
| - | 40 | } |
|
| - | 41 | ||
| - | 42 | ||
| - | 43 | void tlb_invalidate_all(void) |
|
| - | 44 | { |
|
| 39 | asm volatile ( |
45 | asm volatile ( |
| 40 | "tlbia\n" |
46 | "tlbia\n" |
| - | 47 | "tlbsync\n" |
|
| 41 | ); |
48 | ); |
| 42 | } |
49 | } |
| 43 | 50 | ||
| 44 | 51 | ||
| - | 52 | /** Invalidate all entries in TLB that belong to specified address space. |
|
| - | 53 | * |
|
| - | 54 | * @param asid This parameter is ignored as the architecture doesn't support it. |
|
| - | 55 | */ |
|
| 45 | void tlb_invalidate_all(void) |
56 | void tlb_invalidate_asid(asid_t asid) |
| 46 | { |
57 | { |
| - | 58 | tlb_invalidate_all(); |
|
| 47 | } |
59 | } |
| 48 | 60 | ||
| - | 61 | /** Invalidate TLB entries for specified page range belonging to specified address space. |
|
| - | 62 | * |
|
| - | 63 | * @param asid This parameter is ignored as the architecture doesn't support it. |
|
| - | 64 | * @param page Address of the first page whose entry is to be invalidated. |
|
| - | 65 | * @param cnt Number of entries to invalidate. |
|
| - | 66 | */ |
|
| - | 67 | void tlb_invalidate_pages(asid_t asid, __address page, count_t cnt) |
|
| - | 68 | { |
|
| - | 69 | tlb_invalidate_all(); |
|
| - | 70 | } |
|
| - | 71 | ||
| - | 72 | ||
| 49 | 73 | ||
| 50 | /** Print contents of Page Hash Table. */ |
74 | /** Print contents of Page Hash Table. */ |
| 51 | void tlb_print(void) |
75 | void tlb_print(void) |
| 52 | { |
76 | { |
| 53 | } |
77 | } |
| 54 | 78 | ||