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| Rev | Author | Line No. | Line |
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| 2008 | jermar | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2006 Jakub Jermar |
| 2008 | jermar | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <arch/arch.h> |
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| 3133 | jermar | 30 | #include <arch/mm/cache_spec.h> |
| 2008 | jermar | 31 | |
| 2076 | jermar | 32 | #define DCACHE_TAG_SHIFT 2 |
| 33 | |||
| 34 | .register %g2, #scratch |
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| 35 | .register %g3, #scratch |
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| 36 | |||
| 37 | /** Flush the whole D-cache. */ |
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| 2008 | jermar | 38 | .global dcache_flush |
| 39 | dcache_flush: |
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| 40 | set (DCACHE_SIZE - DCACHE_LINE_SIZE), %g1 |
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| 41 | stxa %g0, [%g1] ASI_DCACHE_TAG |
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| 42 | 0: membar #Sync |
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| 43 | subcc %g1, DCACHE_LINE_SIZE, %g1 |
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| 44 | bnz,pt %xcc, 0b |
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| 45 | stxa %g0, [%g1] ASI_DCACHE_TAG |
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| 2252 | jermar | 46 | membar #Sync |
| 2008 | jermar | 47 | retl |
| 2252 | jermar | 48 | ! beware SF Erratum #51, do not put the MEMBAR here |
| 49 | nop |
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| 2008 | jermar | 50 | |
| 2076 | jermar | 51 | /** Flush only D-cache lines of one virtual color. |
| 52 | * |
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| 53 | * @param o0 Virtual color to be flushed. |
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| 54 | */ |
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| 55 | .global dcache_flush_color |
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| 56 | dcache_flush_color: |
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| 57 | mov (DCACHE_SIZE / DCACHE_LINE_SIZE) / 2, %g1 |
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| 58 | set DCACHE_SIZE / 2, %g2 |
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| 59 | sllx %g2, %o0, %g2 |
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| 60 | sub %g2, DCACHE_LINE_SIZE, %g2 |
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| 61 | 0: stxa %g0, [%g2] ASI_DCACHE_TAG |
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| 62 | membar #Sync |
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| 63 | subcc %g1, 1, %g1 |
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| 64 | bnz,pt %xcc, 0b |
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| 65 | sub %g2, DCACHE_LINE_SIZE, %g2 |
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| 66 | retl |
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| 67 | nop |
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| 68 | |||
| 69 | /** Flush only D-cache lines of one virtual color and one tag. |
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| 70 | * |
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| 71 | * @param o0 Virtual color to lookup the tag. |
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| 72 | * @param o1 Tag of the cachelines to be flushed. |
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| 73 | */ |
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| 74 | .global dcache_flush_tag |
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| 75 | dcache_flush_tag: |
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| 76 | mov (DCACHE_SIZE / DCACHE_LINE_SIZE) / 2, %g1 |
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| 77 | set DCACHE_SIZE / 2, %g2 |
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| 78 | sllx %g2, %o0, %g2 |
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| 79 | sub %g2, DCACHE_LINE_SIZE, %g2 |
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| 80 | 0: ldxa [%g2] ASI_DCACHE_TAG, %g3 |
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| 81 | srlx %g3, DCACHE_TAG_SHIFT, %g3 |
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| 82 | cmp %g3, %o1 |
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| 83 | bnz 1f |
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| 84 | nop |
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| 85 | stxa %g0, [%g2] ASI_DCACHE_TAG |
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| 86 | membar #Sync |
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| 87 | 1: subcc %g1, 1, %g1 |
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| 88 | bnz,pt %xcc, 0b |
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| 89 | sub %g2, DCACHE_LINE_SIZE, %g2 |
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| 90 | retl |
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| 91 | nop |