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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4130 | rimsky | 1 | /* |
| 2 | * Copyright (c) 2006 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 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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| 30 | #include <arch/mm/sun4u/cache_spec.h> |
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| 31 | |||
| 32 | #define DCACHE_TAG_SHIFT 2 |
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| 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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| 38 | .global dcache_flush |
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| 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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| 46 | membar #Sync |
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| 47 | retl |
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| 48 | ! beware SF Erratum #51, do not put the MEMBAR here |
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| 49 | nop |