Subversion Repositories HelenOS-historic

Rev

Rev 1423 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
684 jermar 1
/*
2
 * Copyright (C) 2006 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
 
1702 cejka 29
 /** @addtogroup genarchmm
30
 * @{
31
 */
32
/** @file
33
 */
34
 
684 jermar 35
/*
36
 * This is the generic page hash table interface.
37
 */
38
 
1108 jermar 39
#ifdef CONFIG_PAGE_HT
40
 
684 jermar 41
#ifndef __PAGE_HT_H__
42
#define __PAGE_HT_H__
43
 
44
#include <mm/page.h>
746 jermar 45
#include <typedefs.h>
792 jermar 46
#include <arch/types.h>
47
#include <adt/list.h>
48
#include <adt/hash_table.h>
684 jermar 49
 
792 jermar 50
#define PAGE_HT_KEYS    2
51
#define KEY_AS      0
52
#define KEY_PAGE    1
746 jermar 53
 
792 jermar 54
#define PAGE_HT_ENTRIES_BITS    13
55
#define PAGE_HT_ENTRIES     (1<<PAGE_HT_ENTRIES_BITS)
699 jermar 56
 
1108 jermar 57
#define PTE_VALID(pte)      ((pte) != NULL)
58
#define PTE_PRESENT(pte)    ((pte)->p != 0)
59
#define PTE_GET_FRAME(pte)  ((pte)->frame)
1423 jermar 60
#define PTE_READABLE(pte)   1
61
#define PTE_WRITABLE(pte)   ((pte)->w != 0)
62
#define PTE_EXECUTABLE(pte) ((pte)->x != 0)
977 jermar 63
 
1108 jermar 64
#define SET_PTL0_ADDRESS(x)
65
 
792 jermar 66
struct pte {
67
    link_t link;        /**< Page hash table link. */
68
    as_t *as;       /**< Address space. */
69
    __address page;     /**< Virtual memory page. */
70
    __address frame;    /**< Physical memory frame. */
902 jermar 71
    unsigned g : 1;     /**< Global page. */
72
    unsigned x : 1;     /**< Execute. */
73
    unsigned w : 1;     /**< Writable. */
74
    unsigned k : 1;     /**< Kernel privileges required. */
75
    unsigned c : 1;     /**< Cacheable. */
792 jermar 76
    unsigned a : 1;     /**< Accessed. */
77
    unsigned d : 1;     /**< Dirty. */
78
    unsigned p : 1;     /**< Present. */
79
};
699 jermar 80
 
793 jermar 81
extern page_mapping_operations_t ht_mapping_operations;
1380 jermar 82
extern mutex_t page_ht_lock;
792 jermar 83
extern hash_table_t page_ht;
84
extern hash_table_operations_t ht_operations;
746 jermar 85
 
684 jermar 86
#endif
1108 jermar 87
 
88
#endif
1702 cejka 89
 
90
 /** @}
91
 */
92