source: mainline/kernel/arch/xen32/include/pm.h@ 7d3d641

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 7d3d641 was 7d3d641, checked in by Martin Decky <martin@…>, 19 years ago

xen32: initialize virtual IDT
  • Property mode set to 100644
File size: 3.8 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/** @addtogroup xen32
30 * @{
31 */
32/** @file
33 */
34
35#ifndef __PM_H__
36#define __PM_H__
37
38#define IDT_ITEMS 64
39#define GDT_ITEMS 7
40
41#define NULL_DES 0
42#define KTEXT_DES 1
43#define KDATA_DES 2
44#define UTEXT_DES 3
45#define UDATA_DES 4
46#define TSS_DES 5
47#define TLS_DES 6 /* Pointer to Thread-Local-Storage data */
48
49#define selector(des) ((des) << 3)
50
51#define PL_KERNEL 1
52#define PL_USER 3
53
54#define AR_PRESENT (1<<7)
55#define AR_DATA (2<<3)
56#define AR_CODE (3<<3)
57#define AR_WRITABLE (1<<1)
58#define AR_INTERRUPT (0xe)
59#define AR_TSS (0x9)
60
61#define DPL_KERNEL (PL_KERNEL<<5)
62#define DPL_USER (PL_USER<<5)
63
64#define TSS_BASIC_SIZE 104
65#define TSS_IOMAP_SIZE (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */
66
67#define IO_PORTS (64*1024)
68
69#ifndef __ASM__
70
71#include <arch/types.h>
72#include <typedefs.h>
73#include <arch/context.h>
74
75struct ptr_16_32 {
76 uint16_t limit;
77 uint32_t base;
78} __attribute__ ((packed));
79typedef struct ptr_16_32 ptr_16_32_t;
80
81struct descriptor {
82 unsigned limit_0_15: 16;
83 unsigned base_0_15: 16;
84 unsigned base_16_23: 8;
85 unsigned access: 8;
86 unsigned limit_16_19: 4;
87 unsigned available: 1;
88 unsigned unused: 1;
89 unsigned special: 1;
90 unsigned granularity : 1;
91 unsigned base_24_31: 8;
92} __attribute__ ((packed));
93typedef struct descriptor descriptor_t;
94
95struct tss {
96 uint16_t link;
97 unsigned : 16;
98 uint32_t esp0;
99 uint16_t ss0;
100 unsigned : 16;
101 uint32_t esp1;
102 uint16_t ss1;
103 unsigned : 16;
104 uint32_t esp2;
105 uint16_t ss2;
106 unsigned : 16;
107 uint32_t cr3;
108 uint32_t eip;
109 uint32_t eflags;
110 uint32_t eax;
111 uint32_t ecx;
112 uint32_t edx;
113 uint32_t ebx;
114 uint32_t esp;
115 uint32_t ebp;
116 uint32_t esi;
117 uint32_t edi;
118 uint16_t es;
119 unsigned : 16;
120 uint16_t cs;
121 unsigned : 16;
122 uint16_t ss;
123 unsigned : 16;
124 uint16_t ds;
125 unsigned : 16;
126 uint16_t fs;
127 unsigned : 16;
128 uint16_t gs;
129 unsigned : 16;
130 uint16_t ldtr;
131 unsigned : 16;
132 unsigned : 16;
133 uint16_t iomap_base;
134 uint8_t iomap[TSS_IOMAP_SIZE];
135} __attribute__ ((packed));
136typedef struct tss tss_t;
137
138extern ptr_16_32_t gdtr;
139extern ptr_16_32_t bootstrap_gdtr;
140extern ptr_16_32_t protected_ap_gdtr;
141extern struct tss *tss_p;
142
143extern descriptor_t gdt[];
144
145extern void pm_init(void);
146
147extern void gdt_setbase(descriptor_t *d, uintptr_t base);
148extern void gdt_setlimit(descriptor_t *d, uint32_t limit);
149
150extern void traps_init(void);
151
152extern void tss_initialize(tss_t *t);
153extern void set_tls_desc(uintptr_t tls);
154
155#endif /* __ASM__ */
156
157#endif
158
159/** @}
160 */
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