source: mainline/arch/ia32/include/pm.h@ 22cf454d

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 22cf454d was 22cf454d, checked in by Jakub Vana <jakub.vana@…>, 19 years ago

ia32 VESA FB support
  • Property mode set to 100644
File size: 4.0 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 8
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#define VESA_INIT_DES 7
45
46#define selector(des) ((des)<<3)
47
48#define PL_KERNEL 0
49#define PL_USER 3
50
51#define AR_PRESENT (1<<7)
52#define AR_DATA (2<<3)
53#define AR_CODE (3<<3)
54#define AR_WRITABLE (1<<1)
55#define AR_INTERRUPT (0xe)
56#define AR_TSS (0x9)
57
58#define DPL_KERNEL (PL_KERNEL<<5)
59#define DPL_USER (PL_USER<<5)
60
61#define TSS_BASIC_SIZE 104
62#define TSS_IOMAP_SIZE (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */
63
64#define IO_PORTS (64*1024)
65
66#ifndef __ASM__
67
68#include <arch/types.h>
69#include <typedefs.h>
70#include <arch/context.h>
71
72struct ptr_16_32 {
73 __u16 limit;
74 __u32 base;
75} __attribute__ ((packed));
76typedef struct ptr_16_32 ptr_16_32_t;
77
78struct descriptor {
79 unsigned limit_0_15: 16;
80 unsigned base_0_15: 16;
81 unsigned base_16_23: 8;
82 unsigned access: 8;
83 unsigned limit_16_19: 4;
84 unsigned available: 1;
85 unsigned unused: 1;
86 unsigned special: 1;
87 unsigned granularity : 1;
88 unsigned base_24_31: 8;
89} __attribute__ ((packed));
90typedef struct descriptor descriptor_t;
91
92struct idescriptor {
93 unsigned offset_0_15: 16;
94 unsigned selector: 16;
95 unsigned unused: 8;
96 unsigned access: 8;
97 unsigned offset_16_31: 16;
98} __attribute__ ((packed));
99typedef struct idescriptor idescriptor_t;
100
101struct tss {
102 __u16 link;
103 unsigned : 16;
104 __u32 esp0;
105 __u16 ss0;
106 unsigned : 16;
107 __u32 esp1;
108 __u16 ss1;
109 unsigned : 16;
110 __u32 esp2;
111 __u16 ss2;
112 unsigned : 16;
113 __u32 cr3;
114 __u32 eip;
115 __u32 eflags;
116 __u32 eax;
117 __u32 ecx;
118 __u32 edx;
119 __u32 ebx;
120 __u32 esp;
121 __u32 ebp;
122 __u32 esi;
123 __u32 edi;
124 __u16 es;
125 unsigned : 16;
126 __u16 cs;
127 unsigned : 16;
128 __u16 ss;
129 unsigned : 16;
130 __u16 ds;
131 unsigned : 16;
132 __u16 fs;
133 unsigned : 16;
134 __u16 gs;
135 unsigned : 16;
136 __u16 ldtr;
137 unsigned : 16;
138 unsigned : 16;
139 __u16 iomap_base;
140 __u8 iomap[TSS_IOMAP_SIZE];
141} __attribute__ ((packed));
142typedef struct tss tss_t;
143
144extern ptr_16_32_t gdtr;
145extern ptr_16_32_t bootstrap_gdtr;
146extern ptr_16_32_t protected_ap_gdtr;
147extern struct tss *tss_p;
148
149extern descriptor_t gdt[];
150
151extern void pm_init(void);
152
153extern void gdt_setbase(descriptor_t *d, __address base);
154extern void gdt_setlimit(descriptor_t *d, __u32 limit);
155
156extern void idt_init(void);
157extern void idt_setoffset(idescriptor_t *d, __address offset);
158
159extern void tss_initialize(tss_t *t);
160extern void set_tls_desc(__address tls);
161
162#endif /* __ASM__ */
163
164#endif
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