source: mainline/arch/ia32/include/pm.h@ 80d31883

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 80d31883 was e8194664, checked in by Jakub Vana <jakub.vana@…>, 19 years ago

VESA FB cut unwanted
  • Property mode set to 100644
File size: 4.1 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 __PM_H__
30#define __PM_H__
31
32#define IDT_ITEMS 64
33#define GDT_ITEMS 7
34
35#define VESA_INIT_SEGMENT 0x8000
36
37#define NULL_DES 0
38#define KTEXT_DES 1
39#define KDATA_DES 2
40#define UTEXT_DES 3
41#define UDATA_DES 4
42#define TSS_DES 5
43#define TLS_DES 6 /* Pointer to Thread-Local-Storage data */
44
45#ifdef CONFIG_FB
46
47#define VESA_INIT_SEGMENT 0x8000
48#define VESA_INIT_DES 7
49#undef GDT_ITEMS
50#define GDT_ITEMS 8
51
52#endif /* CONFIG_FB */
53
54
55#define selector(des) ((des)<<3)
56
57#define PL_KERNEL 0
58#define PL_USER 3
59
60#define AR_PRESENT (1<<7)
61#define AR_DATA (2<<3)
62#define AR_CODE (3<<3)
63#define AR_WRITABLE (1<<1)
64#define AR_INTERRUPT (0xe)
65#define AR_TSS (0x9)
66
67#define DPL_KERNEL (PL_KERNEL<<5)
68#define DPL_USER (PL_USER<<5)
69
70#define TSS_BASIC_SIZE 104
71#define TSS_IOMAP_SIZE (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */
72
73#define IO_PORTS (64*1024)
74
75#ifndef __ASM__
76
77#include <arch/types.h>
78#include <typedefs.h>
79#include <arch/context.h>
80
81struct ptr_16_32 {
82 __u16 limit;
83 __u32 base;
84} __attribute__ ((packed));
85typedef struct ptr_16_32 ptr_16_32_t;
86
87struct descriptor {
88 unsigned limit_0_15: 16;
89 unsigned base_0_15: 16;
90 unsigned base_16_23: 8;
91 unsigned access: 8;
92 unsigned limit_16_19: 4;
93 unsigned available: 1;
94 unsigned unused: 1;
95 unsigned special: 1;
96 unsigned granularity : 1;
97 unsigned base_24_31: 8;
98} __attribute__ ((packed));
99typedef struct descriptor descriptor_t;
100
101struct idescriptor {
102 unsigned offset_0_15: 16;
103 unsigned selector: 16;
104 unsigned unused: 8;
105 unsigned access: 8;
106 unsigned offset_16_31: 16;
107} __attribute__ ((packed));
108typedef struct idescriptor idescriptor_t;
109
110struct tss {
111 __u16 link;
112 unsigned : 16;
113 __u32 esp0;
114 __u16 ss0;
115 unsigned : 16;
116 __u32 esp1;
117 __u16 ss1;
118 unsigned : 16;
119 __u32 esp2;
120 __u16 ss2;
121 unsigned : 16;
122 __u32 cr3;
123 __u32 eip;
124 __u32 eflags;
125 __u32 eax;
126 __u32 ecx;
127 __u32 edx;
128 __u32 ebx;
129 __u32 esp;
130 __u32 ebp;
131 __u32 esi;
132 __u32 edi;
133 __u16 es;
134 unsigned : 16;
135 __u16 cs;
136 unsigned : 16;
137 __u16 ss;
138 unsigned : 16;
139 __u16 ds;
140 unsigned : 16;
141 __u16 fs;
142 unsigned : 16;
143 __u16 gs;
144 unsigned : 16;
145 __u16 ldtr;
146 unsigned : 16;
147 unsigned : 16;
148 __u16 iomap_base;
149 __u8 iomap[TSS_IOMAP_SIZE];
150} __attribute__ ((packed));
151typedef struct tss tss_t;
152
153extern ptr_16_32_t gdtr;
154extern ptr_16_32_t bootstrap_gdtr;
155extern ptr_16_32_t protected_ap_gdtr;
156extern struct tss *tss_p;
157
158extern descriptor_t gdt[];
159
160extern void pm_init(void);
161
162extern void gdt_setbase(descriptor_t *d, __address base);
163extern void gdt_setlimit(descriptor_t *d, __u32 limit);
164
165extern void idt_init(void);
166extern void idt_setoffset(idescriptor_t *d, __address offset);
167
168extern void tss_initialize(tss_t *t);
169extern void set_tls_desc(__address tls);
170
171#endif /* __ASM__ */
172
173#endif
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