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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 | #include <arch/arch.h> |
29 | #include <arch/arch.h> |
30 | 30 | ||
31 | #define DCACHE_SIZE (16*1024) |
31 | #define DCACHE_SIZE (16 * 1024) |
32 | #define DCACHE_LINE_SIZE 32 |
32 | #define DCACHE_LINE_SIZE 32 |
33 | 33 | ||
- | 34 | #define DCACHE_TAG_SHIFT 2 |
|
- | 35 | ||
- | 36 | .register %g2, #scratch |
|
- | 37 | .register %g3, #scratch |
|
- | 38 | ||
- | 39 | /** Flush the whole D-cache. */ |
|
34 | .global dcache_flush |
40 | .global dcache_flush |
35 | dcache_flush: |
41 | dcache_flush: |
36 | set (DCACHE_SIZE - DCACHE_LINE_SIZE), %g1 |
42 | set (DCACHE_SIZE - DCACHE_LINE_SIZE), %g1 |
37 | stxa %g0, [%g1] ASI_DCACHE_TAG |
43 | stxa %g0, [%g1] ASI_DCACHE_TAG |
38 | 0: membar #Sync |
44 | 0: membar #Sync |
39 | subcc %g1, DCACHE_LINE_SIZE, %g1 |
45 | subcc %g1, DCACHE_LINE_SIZE, %g1 |
40 | bnz,pt %xcc, 0b |
46 | bnz,pt %xcc, 0b |
41 | stxa %g0, [%g1] ASI_DCACHE_TAG |
47 | stxa %g0, [%g1] ASI_DCACHE_TAG |
42 | retl |
48 | retl |
43 | membar #Sync |
49 | membar #Sync |
44 | 50 | ||
- | 51 | /** Flush only D-cache lines of one virtual color. |
|
- | 52 | * |
|
- | 53 | * @param o0 Virtual color to be flushed. |
|
- | 54 | */ |
|
- | 55 | .global dcache_flush_color |
|
- | 56 | dcache_flush_color: |
|
- | 57 | mov (DCACHE_SIZE / DCACHE_LINE_SIZE) / 2, %g1 |
|
- | 58 | set DCACHE_SIZE / 2, %g2 |
|
- | 59 | sllx %g2, %o0, %g2 |
|
- | 60 | sub %g2, DCACHE_LINE_SIZE, %g2 |
|
- | 61 | 0: stxa %g0, [%g2] ASI_DCACHE_TAG |
|
- | 62 | membar #Sync |
|
- | 63 | subcc %g1, 1, %g1 |
|
- | 64 | bnz,pt %xcc, 0b |
|
- | 65 | sub %g2, DCACHE_LINE_SIZE, %g2 |
|
- | 66 | retl |
|
- | 67 | nop |
|
- | 68 | ||
- | 69 | /** Flush only D-cache lines of one virtual color and one tag. |
|
- | 70 | * |
|
- | 71 | * @param o0 Virtual color to lookup the tag. |
|
- | 72 | * @param o1 Tag of the cachelines to be flushed. |
|
- | 73 | */ |
|
- | 74 | .global dcache_flush_tag |
|
- | 75 | dcache_flush_tag: |
|
- | 76 | mov (DCACHE_SIZE / DCACHE_LINE_SIZE) / 2, %g1 |
|
- | 77 | set DCACHE_SIZE / 2, %g2 |
|
- | 78 | sllx %g2, %o0, %g2 |
|
- | 79 | sub %g2, DCACHE_LINE_SIZE, %g2 |
|
- | 80 | 0: ldxa [%g2] ASI_DCACHE_TAG, %g3 |
|
- | 81 | srlx %g3, DCACHE_TAG_SHIFT, %g3 |
|
- | 82 | cmp %g3, %o1 |
|
- | 83 | bnz 1f |
|
- | 84 | nop |
|
- | 85 | stxa %g0, [%g2] ASI_DCACHE_TAG |
|
- | 86 | membar #Sync |
|
- | 87 | 1: subcc %g1, 1, %g1 |
|
- | 88 | bnz,pt %xcc, 0b |
|
- | 89 | sub %g2, DCACHE_LINE_SIZE, %g2 |
|
- | 90 | retl |
|
- | 91 | nop |
|
45 | 92 | ||
- | 93 | ||
- | 94 |
|
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- | 95 | ||
- | 96 | ||
- | 97 |