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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3222 | svoboda | 1 | /* |
| 2 | * Copyright (c) 2008 Jiri Svoboda |
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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 | /** @addtogroup sync |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | |||
| 33 | /** |
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| 34 | * @file |
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| 35 | * @brief Self-modifying code barriers. |
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| 36 | */ |
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| 37 | |||
| 38 | #include <arch.h> |
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| 39 | #include <macros.h> |
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| 40 | #include <errno.h> |
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| 41 | #include <arch/barrier.h> |
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| 42 | #include <synch/smc.h> |
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| 43 | |||
| 44 | unative_t sys_smc_coherence(uintptr_t va, size_t size) |
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| 45 | { |
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| 46 | if (overlaps(va, size, NULL, PAGE_SIZE)) |
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| 47 | return EINVAL; |
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| 48 | |||
| 49 | if (!KERNEL_ADDRESS_SPACE_SHADOWED) { |
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| 50 | if (overlaps(va, size, KERNEL_ADDRESS_SPACE_START, |
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| 51 | KERNEL_ADDRESS_SPACE_END - KERNEL_ADDRESS_SPACE_START)) |
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| 52 | return EINVAL; |
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| 53 | } |
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| 54 | |||
| 55 | smc_coherence_block((void *) va, size); |
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| 56 | return 0; |
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| 57 | } |
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| 58 | |||
| 59 | /** @} |
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| 60 | */ |