| 1 | /*
|
|---|
| 2 | * Copyright (C) 2001-2004 Jakub Jermar
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | #ifndef __PAGE_H__
|
|---|
| 30 | #define __PAGE_H__
|
|---|
| 31 |
|
|---|
| 32 | #include <arch/mm/asid.h>
|
|---|
| 33 | #include <arch/types.h>
|
|---|
| 34 | #include <typedefs.h>
|
|---|
| 35 |
|
|---|
| 36 | #define PAGE_CACHEABLE_SHIFT 0
|
|---|
| 37 | #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT
|
|---|
| 38 | #define PAGE_PRESENT_SHIFT 1
|
|---|
| 39 | #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT
|
|---|
| 40 | #define PAGE_USER_SHIFT 2
|
|---|
| 41 | #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT
|
|---|
| 42 | #define PAGE_READ_SHIFT 3
|
|---|
| 43 | #define PAGE_WRITE_SHIFT 4
|
|---|
| 44 | #define PAGE_EXEC_SHIFT 5
|
|---|
| 45 | #define PAGE_GLOBAL_SHIFT 6
|
|---|
| 46 |
|
|---|
| 47 | #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT)
|
|---|
| 48 | #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT)
|
|---|
| 49 |
|
|---|
| 50 | #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT)
|
|---|
| 51 | #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT)
|
|---|
| 52 |
|
|---|
| 53 | #define PAGE_USER (1<<PAGE_USER_SHIFT)
|
|---|
| 54 | #define PAGE_KERNEL (0<<PAGE_USER_SHIFT)
|
|---|
| 55 |
|
|---|
| 56 | #define PAGE_READ (1<<PAGE_READ_SHIFT)
|
|---|
| 57 | #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT)
|
|---|
| 58 | #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT)
|
|---|
| 59 |
|
|---|
| 60 | #define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT)
|
|---|
| 61 |
|
|---|
| 62 | /** Operations to manipulate page mappings. */
|
|---|
| 63 | struct page_operations {
|
|---|
| 64 | void (* mapping_insert)(__address page, asid_t asid, __address frame, int flags, __address root);
|
|---|
| 65 | pte_t *(* mapping_find)(__address page, asid_t asid, __address root);
|
|---|
| 66 | };
|
|---|
| 67 | typedef struct page_operations page_operations_t;
|
|---|
| 68 |
|
|---|
| 69 | extern page_operations_t *page_operations;
|
|---|
| 70 |
|
|---|
| 71 | extern void page_init(void);
|
|---|
| 72 | extern void page_mapping_insert(__address page, asid_t asid, __address frame, int flags, __address root);
|
|---|
| 73 | extern pte_t *page_mapping_find(__address page, asid_t asid, __address root);
|
|---|
| 74 | extern void map_structure(__address s, size_t size);
|
|---|
| 75 |
|
|---|
| 76 | #endif
|
|---|
