Subversion Repositories HelenOS-historic

Rev

Rev 1292 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 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
 
1702 cejka 29
 /** @addtogroup ia32  
30
 * @{
31
 */
32
/** @file
33
 */
34
 
1 jermar 35
#ifndef __PM_H__
36
#define __PM_H__
37
 
38
#define IDT_ITEMS 64
1292 vana 39
#define GDT_ITEMS 7
1 jermar 40
 
1287 vana 41
#define VESA_INIT_SEGMENT 0x8000
42
 
1 jermar 43
#define NULL_DES    0
44
#define KTEXT_DES   1
45
#define KDATA_DES   2
46
#define UTEXT_DES   3
47
#define UDATA_DES   4
48
#define TSS_DES     5
1112 palkovsky 49
#define TLS_DES         6 /* Pointer to Thread-Local-Storage data */
1292 vana 50
 
51
#ifdef CONFIG_FB
52
 
53
#define VESA_INIT_SEGMENT 0x8000
1287 vana 54
#define VESA_INIT_DES 7
1292 vana 55
#undef GDT_ITEMS
56
#define GDT_ITEMS 8
1 jermar 57
 
1292 vana 58
#endif /* CONFIG_FB */
59
 
60
 
1 jermar 61
#define selector(des)   ((des)<<3)
62
 
63
#define PL_KERNEL   0
64
#define PL_USER     3
65
 
66
#define AR_PRESENT  (1<<7)
67
#define AR_DATA     (2<<3)
68
#define AR_CODE     (3<<3)
69
#define AR_WRITABLE (1<<1)
70
#define AR_INTERRUPT    (0xe)
71
#define AR_TSS      (0x9)
72
 
73
#define DPL_KERNEL  (PL_KERNEL<<5)
74
#define DPL_USER    (PL_USER<<5)
75
 
1187 jermar 76
#define TSS_BASIC_SIZE  104
1201 jermar 77
#define TSS_IOMAP_SIZE  (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */
1 jermar 78
 
1203 jermar 79
#define IO_PORTS    (64*1024)
80
 
300 palkovsky 81
#ifndef __ASM__
82
 
83
#include <arch/types.h>
84
#include <typedefs.h>
85
#include <arch/context.h>
86
 
1 jermar 87
struct ptr_16_32 {
88
    __u16 limit;
89
    __u32 base;
90
} __attribute__ ((packed));
1187 jermar 91
typedef struct ptr_16_32 ptr_16_32_t;
1 jermar 92
 
93
struct descriptor {
94
    unsigned limit_0_15: 16;
95
    unsigned base_0_15: 16;
96
    unsigned base_16_23: 8;
97
    unsigned access: 8;
98
    unsigned limit_16_19: 4;
99
    unsigned available: 1;
100
    unsigned unused: 1;
101
    unsigned special: 1;
102
    unsigned granularity : 1;
103
    unsigned base_24_31: 8;
104
} __attribute__ ((packed));
1187 jermar 105
typedef struct descriptor  descriptor_t;
1 jermar 106
 
107
struct idescriptor {
108
    unsigned offset_0_15: 16;
109
    unsigned selector: 16;
110
    unsigned unused: 8;
111
    unsigned access: 8;
112
    unsigned offset_16_31: 16;
113
} __attribute__ ((packed));
1187 jermar 114
typedef struct idescriptor idescriptor_t;
1 jermar 115
 
116
struct tss {
117
    __u16 link;
118
    unsigned : 16;
119
    __u32 esp0;
120
    __u16 ss0;
121
    unsigned : 16;
122
    __u32 esp1;
123
    __u16 ss1;
124
    unsigned : 16;
125
    __u32 esp2;
126
    __u16 ss2;
127
    unsigned : 16;
128
    __u32 cr3;
129
    __u32 eip;
130
    __u32 eflags;
131
    __u32 eax;
132
    __u32 ecx;
133
    __u32 edx;
134
    __u32 ebx;
135
    __u32 esp;
136
    __u32 ebp;
137
    __u32 esi;
138
    __u32 edi;
139
    __u16 es;
140
    unsigned : 16;
141
    __u16 cs;
142
    unsigned : 16;
143
    __u16 ss;
144
    unsigned : 16;
145
    __u16 ds;
146
    unsigned : 16;
147
    __u16 fs;
148
    unsigned : 16;
149
    __u16 gs;
150
    unsigned : 16;
151
    __u16 ldtr;
152
    unsigned : 16;
153
    unsigned : 16;
1184 jermar 154
    __u16 iomap_base;
1201 jermar 155
    __u8 iomap[TSS_IOMAP_SIZE];
1 jermar 156
} __attribute__ ((packed));
1187 jermar 157
typedef struct tss tss_t;
1 jermar 158
 
1187 jermar 159
extern ptr_16_32_t gdtr;
160
extern ptr_16_32_t bootstrap_gdtr;
161
extern ptr_16_32_t protected_ap_gdtr;
1 jermar 162
extern struct tss *tss_p;
163
 
1187 jermar 164
extern descriptor_t gdt[];
1 jermar 165
 
166
extern void pm_init(void);
167
 
1187 jermar 168
extern void gdt_setbase(descriptor_t *d, __address base);
169
extern void gdt_setlimit(descriptor_t *d, __u32 limit);
1 jermar 170
 
171
extern void idt_init(void);
1187 jermar 172
extern void idt_setoffset(idescriptor_t *d, __address offset);
1 jermar 173
 
1187 jermar 174
extern void tss_initialize(tss_t *t);
1112 palkovsky 175
extern void set_tls_desc(__address tls);
1 jermar 176
 
300 palkovsky 177
#endif /* __ASM__ */
178
 
1 jermar 179
#endif
1702 cejka 180
 
181
 /** @}
182
 */
183