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| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 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 | #ifndef __PAGE_H__ |
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| 30 | #define __PAGE_H__ |
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| 31 | |||
| 32 | #include <arch/types.h> |
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| 116 | jermar | 33 | #include <typedefs.h> |
| 1 | jermar | 34 | |
| 120 | jermar | 35 | #define PAGE_CACHEABLE_SHIFT 0 |
| 36 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
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| 37 | #define PAGE_PRESENT_SHIFT 1 |
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| 38 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
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| 39 | #define PAGE_USER_SHIFT 2 |
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| 40 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
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| 41 | #define PAGE_READ_SHIFT 3 |
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| 42 | #define PAGE_WRITE_SHIFT 4 |
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| 43 | #define PAGE_EXEC_SHIFT 5 |
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| 1 | jermar | 44 | |
| 125 | jermar | 45 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
| 46 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
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| 1 | jermar | 47 | |
| 125 | jermar | 48 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
| 49 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
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| 1 | jermar | 50 | |
| 125 | jermar | 51 | #define PAGE_USER (1<<PAGE_USER_SHIFT) |
| 52 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
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| 1 | jermar | 53 | |
| 120 | jermar | 54 | #define PAGE_READ (1<<PAGE_READ_SHIFT) |
| 55 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
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| 56 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
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| 57 | |||
| 684 | jermar | 58 | struct page_operations { |
| 59 | void (* mapping_insert)(__address page, __address frame, int flags, __address root); |
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| 60 | pte_t *(* mapping_find)(__address page, __address root); |
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| 61 | }; |
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| 62 | typedef struct page_operations page_operations_t; |
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| 119 | jermar | 63 | |
| 684 | jermar | 64 | extern page_operations_t *page_operations; |
| 119 | jermar | 65 | |
| 1 | jermar | 66 | extern void page_init(void); |
| 492 | jermar | 67 | extern void page_mapping_insert(__address page, __address frame, int flags, __address root); |
| 68 | extern pte_t *page_mapping_find(__address page, __address root); |
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| 116 | jermar | 69 | extern void map_structure(__address s, size_t size); |
| 1 | jermar | 70 | |
| 71 | #endif |