Subversion Repositories HelenOS

Rev

Rev 194 | Rev 251 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
164 palkovsky 1
/*
2
 * Copyright (C) 2005 Martin Decky
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 __amd64_PAGE_H__
30
#define __amd64_PAGE_H__
31
 
194 palkovsky 32
#ifndef __ASM__
33
#  include <mm/page.h>
34
#  include <arch/mm/frame.h>
35
#  include <arch/types.h>
36
#endif
164 palkovsky 37
 
38
#define PAGE_SIZE   FRAME_SIZE
39
 
194 palkovsky 40
#ifndef __ASM__
226 palkovsky 41
# define KA2PA(x)      (((__address) (x)) + 0x80000000)
42
# define PA2KA(x)      (((__address) (x)) - 0x80000000)
194 palkovsky 43
#else
226 palkovsky 44
# define KA2PA(x)      ((x) + 0x80000000)
45
//# define PA2KA(x)      ((x)) - 0x80000000)
194 palkovsky 46
#endif
47
 
226 palkovsky 48
#define PTL0_INDEX_ARCH(vaddr)  (((vaddr)>>39)&0x1ff)
49
#define PTL1_INDEX_ARCH(vaddr)  (((vaddr)>>30)&0x1ff)
50
#define PTL2_INDEX_ARCH(vaddr)  (((vaddr)>>21)&0x1ff)
51
#define PTL3_INDEX_ARCH(vaddr)  (((vaddr)>>12)&0x1ff)
164 palkovsky 52
 
226 palkovsky 53
#define GET_PTL0_ADDRESS_ARCH()         ((pte_t *) read_cr3())
54
#define GET_PTL1_ADDRESS_ARCH(ptl0, i)      ((pte_t *) ((((__u64) ((pte_t *)(ptl0))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 )))
55
#define GET_PTL2_ADDRESS_ARCH(ptl1, i)      ((pte_t *) ((((__u64) ((pte_t *)(ptl1))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 )))
56
#define GET_PTL3_ADDRESS_ARCH(ptl2, i)      ((pte_t *) ((((__u64) ((pte_t *)(ptl2))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 )))
57
#define GET_FRAME_ADDRESS_ARCH(ptl3, i)     ((__address *) ((((__u64) ((pte_t *)(ptl3))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 )))
164 palkovsky 58
 
226 palkovsky 59
#define SET_PTL0_ADDRESS_ARCH(ptl0)     (write_cr3((__address) (ptl0)))
60
#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a)   set_pt_addr((pte_t *)(ptl0), (index_t)(i), a)
61
#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)       set_pt_addr((pte_t *)(ptl1), (index_t)(i), a)
62
#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)       set_pt_addr((pte_t *)(ptl2), (index_t)(i), a)
63
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a)  set_pt_addr((pte_t *)(ptl3), (index_t)(i), a)
164 palkovsky 64
 
226 palkovsky 65
#define GET_PTL1_FLAGS_ARCH(ptl0, i)        get_pt_flags((pte_t *)(ptl0), (index_t)(i))
66
#define GET_PTL2_FLAGS_ARCH(ptl1, i)        get_pt_flags((pte_t *)(ptl1), (index_t)(i))
67
#define GET_PTL3_FLAGS_ARCH(ptl2, i)        get_pt_flags((pte_t *)(ptl2), (index_t)(i))
68
#define GET_FRAME_FLAGS_ARCH(ptl3, i)       get_pt_flags((pte_t *)(ptl3), (index_t)(i))
164 palkovsky 69
 
226 palkovsky 70
#define SET_PTL1_FLAGS_ARCH(ptl0, i, x)     set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x))
71
#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)         set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x))
72
#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)         set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x))
73
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x)    set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x))
164 palkovsky 74
 
226 palkovsky 75
#ifndef __ASM__
164 palkovsky 76
 
226 palkovsky 77
typedef struct page_specifier pte_t;
78
 
79
struct page_specifier {
80
    unsigned present : 1;
81
    unsigned writeable : 1;
82
    unsigned uaccessible : 1;
83
    unsigned page_write_through : 1;
84
    unsigned page_cache_disable : 1;
85
    unsigned accessed : 1;
86
    unsigned dirty : 1;
87
    unsigned unused: 1;
88
    unsigned global : 1;
89
    unsigned avl : 3;
90
    unsigned addr_12_31 : 30;
91
    unsigned addr_32_51 : 21;
92
    unsigned no_execute : 1;
93
} __attribute__ ((packed));
94
 
95
static inline int get_pt_flags(pte_t *pt, index_t i)
96
{
97
    pte_t *p = &pt[i];
98
 
99
    return (
100
        (!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT |
101
        (!p->present)<<PAGE_PRESENT_SHIFT |
102
        p->uaccessible<<PAGE_USER_SHIFT |
103
        1<<PAGE_READ_SHIFT |
104
        p->writeable<<PAGE_WRITE_SHIFT |
105
        (!p->no_execute)<<PAGE_EXEC_SHIFT
106
    );
107
}
108
 
109
static inline void set_pt_addr(pte_t *pt, index_t i, __address a)
110
{
111
    pte_t *p = &pt[i];
112
 
113
    p->addr_12_31 = (a >> 12) & 0xfffff;
114
    p->addr_32_51 = a >> 32;
115
}
116
 
117
static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
118
{
119
    pte_t *p = &pt[i];
120
 
121
    p->page_cache_disable = !(flags & PAGE_CACHEABLE);
122
    p->present = !(flags & PAGE_NOT_PRESENT);
123
    p->uaccessible = (flags & PAGE_USER) != 0;
124
    p->writeable = (flags & PAGE_WRITE) != 0;
125
    p->no_execute = (flags & PAGE_EXEC) == 0;
126
}
127
 
164 palkovsky 128
extern void page_arch_init(void);
129
 
194 palkovsky 130
#endif
164 palkovsky 131
 
132
#endif