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| Rev | Author | Line No. | Line |
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| 684 | jermar | 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 <genarch/mm/page_ht.h> |
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| 30 | #include <mm/page.h> |
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| 31 | #include <mm/frame.h> |
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| 687 | jermar | 32 | #include <arch/mm/asid.h> |
| 684 | jermar | 33 | #include <arch/types.h> |
| 34 | #include <typedefs.h> |
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| 35 | #include <arch/asm.h> |
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| 36 | |||
| 687 | jermar | 37 | static void ht_mapping_insert(__address page, asid_t asid, __address frame, int flags, __address root); |
| 38 | static pte_t *ht_mapping_find(__address page, asid_t asid, __address root); |
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| 684 | jermar | 39 | |
| 40 | page_operations_t page_ht_operations = { |
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| 41 | .mapping_insert = ht_mapping_insert, |
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| 42 | .mapping_find = ht_mapping_find |
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| 43 | }; |
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| 44 | |||
| 45 | /** Map page to frame using page hash table. |
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| 46 | * |
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| 47 | * Map virtual address 'page' to physical address 'frame' |
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| 48 | * using 'flags'. |
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| 49 | * |
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| 50 | * @param page Virtual address of the page to be mapped. |
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| 687 | jermar | 51 | * @param asid Address space to which page belongs. |
| 684 | jermar | 52 | * @param frame Physical address of memory frame to which the mapping is done. |
| 53 | * @param flags Flags to be used for mapping. |
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| 54 | * @param root Explicit PTL0 address. |
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| 55 | */ |
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| 687 | jermar | 56 | void ht_mapping_insert(__address page, asid_t asid, __address frame, int flags, __address root) |
| 684 | jermar | 57 | { |
| 58 | } |
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| 59 | |||
| 60 | /** Find mapping for virtual page in page hash table. |
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| 61 | * |
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| 62 | * Find mapping for virtual page. |
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| 63 | * |
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| 64 | * @param page Virtual page. |
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| 687 | jermar | 65 | * @param asid Address space to wich page belongs. |
| 684 | jermar | 66 | * @param root PTL0 address if non-zero. |
| 67 | * |
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| 68 | * @return NULL if there is no such mapping; entry from PTL3 describing the mapping otherwise. |
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| 69 | */ |
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| 687 | jermar | 70 | pte_t *ht_mapping_find(__address page, asid_t asid, __address root) |
| 684 | jermar | 71 | { |
| 72 | return NULL; |
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| 73 | } |