Subversion Repositories HelenOS

Rev

Rev 2071 | Rev 4125 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2001-2004 Jakub Jermar
1 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
 
1888 jermar 29
/** @addtogroup ia32   
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
1888 jermar 35
#ifndef KERN_ia32_PM_H_
36
#define KERN_ia32_PM_H_
1 jermar 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
1811 decky 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
 
1811 decky 61
#define selector(des)   ((des) << 3)
1 jermar 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 <arch/context.h>
85
 
1 jermar 86
struct ptr_16_32 {
1780 jermar 87
    uint16_t limit;
88
    uint32_t base;
1 jermar 89
} __attribute__ ((packed));
1187 jermar 90
typedef struct ptr_16_32 ptr_16_32_t;
1 jermar 91
 
92
struct descriptor {
93
    unsigned limit_0_15: 16;
94
    unsigned base_0_15: 16;
95
    unsigned base_16_23: 8;
96
    unsigned access: 8;
97
    unsigned limit_16_19: 4;
98
    unsigned available: 1;
99
    unsigned unused: 1;
100
    unsigned special: 1;
101
    unsigned granularity : 1;
102
    unsigned base_24_31: 8;
103
} __attribute__ ((packed));
1187 jermar 104
typedef struct descriptor  descriptor_t;
1 jermar 105
 
106
struct idescriptor {
107
    unsigned offset_0_15: 16;
108
    unsigned selector: 16;
109
    unsigned unused: 8;
110
    unsigned access: 8;
111
    unsigned offset_16_31: 16;
112
} __attribute__ ((packed));
1187 jermar 113
typedef struct idescriptor idescriptor_t;
1 jermar 114
 
115
struct tss {
1780 jermar 116
    uint16_t link;
1 jermar 117
    unsigned : 16;
1780 jermar 118
    uint32_t esp0;
119
    uint16_t ss0;
1 jermar 120
    unsigned : 16;
1780 jermar 121
    uint32_t esp1;
122
    uint16_t ss1;
1 jermar 123
    unsigned : 16;
1780 jermar 124
    uint32_t esp2;
125
    uint16_t ss2;
1 jermar 126
    unsigned : 16;
1780 jermar 127
    uint32_t cr3;
128
    uint32_t eip;
129
    uint32_t eflags;
130
    uint32_t eax;
131
    uint32_t ecx;
132
    uint32_t edx;
133
    uint32_t ebx;
134
    uint32_t esp;
135
    uint32_t ebp;
136
    uint32_t esi;
137
    uint32_t edi;
138
    uint16_t es;
1 jermar 139
    unsigned : 16;
1780 jermar 140
    uint16_t cs;
1 jermar 141
    unsigned : 16;
1780 jermar 142
    uint16_t ss;
1 jermar 143
    unsigned : 16;
1780 jermar 144
    uint16_t ds;
1 jermar 145
    unsigned : 16;
1780 jermar 146
    uint16_t fs;
1 jermar 147
    unsigned : 16;
1780 jermar 148
    uint16_t gs;
1 jermar 149
    unsigned : 16;
1780 jermar 150
    uint16_t ldtr;
1 jermar 151
    unsigned : 16;
152
    unsigned : 16;
1780 jermar 153
    uint16_t iomap_base;
154
    uint8_t iomap[TSS_IOMAP_SIZE];
1 jermar 155
} __attribute__ ((packed));
1187 jermar 156
typedef struct tss tss_t;
1 jermar 157
 
1187 jermar 158
extern ptr_16_32_t gdtr;
159
extern ptr_16_32_t bootstrap_gdtr;
160
extern ptr_16_32_t protected_ap_gdtr;
1 jermar 161
extern struct tss *tss_p;
162
 
1187 jermar 163
extern descriptor_t gdt[];
1 jermar 164
 
165
extern void pm_init(void);
166
 
1780 jermar 167
extern void gdt_setbase(descriptor_t *d, uintptr_t base);
168
extern void gdt_setlimit(descriptor_t *d, uint32_t limit);
1 jermar 169
 
170
extern void idt_init(void);
1780 jermar 171
extern void idt_setoffset(idescriptor_t *d, uintptr_t offset);
1 jermar 172
 
1187 jermar 173
extern void tss_initialize(tss_t *t);
1780 jermar 174
extern void set_tls_desc(uintptr_t tls);
1 jermar 175
 
300 palkovsky 176
#endif /* __ASM__ */
177
 
1 jermar 178
#endif
1702 cejka 179
 
1888 jermar 180
/** @}
1702 cejka 181
 */