source: mainline/generic/include/mm/page.h@ e3c762cd

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since e3c762cd was e3c762cd, checked in by Jakub Jermar <jakub@…>, 19 years ago

Complete implementation of copy_from_uspace() and copy_to_uspace()
for amd64 and ia32. Other architectures still compile and run,
but need to implement their own assembly-only memcpy(), memcpy_from_uspace(),
memcpy_to_uspace() and their failover parts. For these architectures
only dummy implementations are provided.
  • Property mode set to 100644
File size: 3.2 KB
Line 
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#include <memstr.h>
36
37#define PAGE_CACHEABLE_SHIFT 0
38#define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT
39#define PAGE_PRESENT_SHIFT 1
40#define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT
41#define PAGE_USER_SHIFT 2
42#define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT
43#define PAGE_READ_SHIFT 3
44#define PAGE_WRITE_SHIFT 4
45#define PAGE_EXEC_SHIFT 5
46#define PAGE_GLOBAL_SHIFT 6
47
48#define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT)
49#define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT)
50
51#define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT)
52#define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT)
53
54#define PAGE_USER (1<<PAGE_USER_SHIFT)
55#define PAGE_KERNEL (0<<PAGE_USER_SHIFT)
56
57#define PAGE_READ (1<<PAGE_READ_SHIFT)
58#define PAGE_WRITE (1<<PAGE_WRITE_SHIFT)
59#define PAGE_EXEC (1<<PAGE_EXEC_SHIFT)
60
61#define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT)
62
63/** Operations to manipulate page mappings. */
64struct page_mapping_operations {
65 void (* mapping_insert)(as_t *as, __address page, __address frame, int flags);
66 void (* mapping_remove)(as_t *as, __address page);
67 pte_t *(* mapping_find)(as_t *as, __address page);
68};
69typedef struct page_mapping_operations page_mapping_operations_t;
70
71extern page_mapping_operations_t *page_mapping_operations;
72
73extern void page_init(void);
74extern void page_table_lock(as_t *as, bool lock);
75extern void page_table_unlock(as_t *as, bool unlock);
76extern void page_mapping_insert(as_t *as, __address page, __address frame, int flags);
77extern void page_mapping_remove(as_t *as, __address page);
78extern pte_t *page_mapping_find(as_t *as, __address page);
79extern pte_t *page_table_create(int flags);
80extern void map_structure(__address s, size_t size);
81
82#endif
Note: See TracBrowser for help on using the repository browser.