| 1 | /*
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| 2 | * Copyright (C) 2005 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 |
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| 29 | #include <mm/tlb.h>
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| 30 | #include <arch/mm/asid.h>
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| 31 | #include <arch/asm.h>
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| 32 | #include <arch/types.h>
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| 33 |
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| 34 | /** Invalidate all entries in TLB. */
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| 35 | void tlb_invalidate_all(void)
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| 36 | {
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| 37 | write_cr3(read_cr3());
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| 38 | }
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| 39 |
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| 40 | /** Invalidate all entries in TLB that belong to specified address space.
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| 41 | *
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| 42 | * @param asid This parameter is ignored as the architecture doesn't support it.
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| 43 | */
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| 44 | void tlb_invalidate_asid(asid_t asid)
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| 45 | {
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| 46 | tlb_invalidate_all();
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| 47 | }
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| 48 |
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| 49 | /** Invalidate TLB entries for specified page range belonging to specified address space.
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| 50 | *
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| 51 | * @param asid This parameter is ignored as the architecture doesn't support it.
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| 52 | * @param page Address of the first page whose entry is to be invalidated.
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| 53 | * @param cnt Number of entries to invalidate.
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| 54 | */
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| 55 | void tlb_invalidate_pages(asid_t asid, __address page, count_t cnt)
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| 56 | {
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| 57 | int i;
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| 58 |
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| 59 | for (i = 0; i < cnt; i++)
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| 60 | invlpg(page + i * PAGE_SIZE);
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| 61 | }
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