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1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #ifndef __PM_H__ |
29 | #ifndef __PM_H__ |
30 | #define __PM_H__ |
30 | #define __PM_H__ |
31 | 31 | ||
32 | #define IDT_ITEMS 64 |
32 | #define IDT_ITEMS 64 |
33 | #define GDT_ITEMS 7 |
33 | #define GDT_ITEMS 7 |
34 | 34 | ||
35 | #define NULL_DES 0 |
35 | #define NULL_DES 0 |
36 | #define KTEXT_DES 1 |
36 | #define KTEXT_DES 1 |
37 | #define KDATA_DES 2 |
37 | #define KDATA_DES 2 |
38 | #define UTEXT_DES 3 |
38 | #define UTEXT_DES 3 |
39 | #define UDATA_DES 4 |
39 | #define UDATA_DES 4 |
40 | #define TSS_DES 5 |
40 | #define TSS_DES 5 |
41 | #define TLS_DES 6 /* Pointer to Thread-Local-Storage data */ |
41 | #define TLS_DES 6 /* Pointer to Thread-Local-Storage data */ |
42 | 42 | ||
43 | #define selector(des) ((des)<<3) |
43 | #define selector(des) ((des)<<3) |
44 | 44 | ||
45 | #define PL_KERNEL 0 |
45 | #define PL_KERNEL 0 |
46 | #define PL_USER 3 |
46 | #define PL_USER 3 |
47 | 47 | ||
48 | #define AR_PRESENT (1<<7) |
48 | #define AR_PRESENT (1<<7) |
49 | #define AR_DATA (2<<3) |
49 | #define AR_DATA (2<<3) |
50 | #define AR_CODE (3<<3) |
50 | #define AR_CODE (3<<3) |
51 | #define AR_WRITABLE (1<<1) |
51 | #define AR_WRITABLE (1<<1) |
52 | #define AR_INTERRUPT (0xe) |
52 | #define AR_INTERRUPT (0xe) |
53 | #define AR_TSS (0x9) |
53 | #define AR_TSS (0x9) |
54 | 54 | ||
55 | #define DPL_KERNEL (PL_KERNEL<<5) |
55 | #define DPL_KERNEL (PL_KERNEL<<5) |
56 | #define DPL_USER (PL_USER<<5) |
56 | #define DPL_USER (PL_USER<<5) |
57 | 57 | ||
58 | #define TSS_BASIC_SIZE 104 |
58 | #define TSS_BASIC_SIZE 104 |
- | 59 | #define TSS_IOMAP_SIZE (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */ |
|
59 | 60 | ||
60 | #ifndef __ASM__ |
61 | #ifndef __ASM__ |
61 | 62 | ||
62 | #include <arch/types.h> |
63 | #include <arch/types.h> |
63 | #include <typedefs.h> |
64 | #include <typedefs.h> |
64 | #include <arch/context.h> |
65 | #include <arch/context.h> |
65 | 66 | ||
66 | struct ptr_16_32 { |
67 | struct ptr_16_32 { |
67 | __u16 limit; |
68 | __u16 limit; |
68 | __u32 base; |
69 | __u32 base; |
69 | } __attribute__ ((packed)); |
70 | } __attribute__ ((packed)); |
70 | typedef struct ptr_16_32 ptr_16_32_t; |
71 | typedef struct ptr_16_32 ptr_16_32_t; |
71 | 72 | ||
72 | struct descriptor { |
73 | struct descriptor { |
73 | unsigned limit_0_15: 16; |
74 | unsigned limit_0_15: 16; |
74 | unsigned base_0_15: 16; |
75 | unsigned base_0_15: 16; |
75 | unsigned base_16_23: 8; |
76 | unsigned base_16_23: 8; |
76 | unsigned access: 8; |
77 | unsigned access: 8; |
77 | unsigned limit_16_19: 4; |
78 | unsigned limit_16_19: 4; |
78 | unsigned available: 1; |
79 | unsigned available: 1; |
79 | unsigned unused: 1; |
80 | unsigned unused: 1; |
80 | unsigned special: 1; |
81 | unsigned special: 1; |
81 | unsigned granularity : 1; |
82 | unsigned granularity : 1; |
82 | unsigned base_24_31: 8; |
83 | unsigned base_24_31: 8; |
83 | } __attribute__ ((packed)); |
84 | } __attribute__ ((packed)); |
84 | typedef struct descriptor descriptor_t; |
85 | typedef struct descriptor descriptor_t; |
85 | 86 | ||
86 | struct idescriptor { |
87 | struct idescriptor { |
87 | unsigned offset_0_15: 16; |
88 | unsigned offset_0_15: 16; |
88 | unsigned selector: 16; |
89 | unsigned selector: 16; |
89 | unsigned unused: 8; |
90 | unsigned unused: 8; |
90 | unsigned access: 8; |
91 | unsigned access: 8; |
91 | unsigned offset_16_31: 16; |
92 | unsigned offset_16_31: 16; |
92 | } __attribute__ ((packed)); |
93 | } __attribute__ ((packed)); |
93 | typedef struct idescriptor idescriptor_t; |
94 | typedef struct idescriptor idescriptor_t; |
94 | 95 | ||
95 | struct tss { |
96 | struct tss { |
96 | __u16 link; |
97 | __u16 link; |
97 | unsigned : 16; |
98 | unsigned : 16; |
98 | __u32 esp0; |
99 | __u32 esp0; |
99 | __u16 ss0; |
100 | __u16 ss0; |
100 | unsigned : 16; |
101 | unsigned : 16; |
101 | __u32 esp1; |
102 | __u32 esp1; |
102 | __u16 ss1; |
103 | __u16 ss1; |
103 | unsigned : 16; |
104 | unsigned : 16; |
104 | __u32 esp2; |
105 | __u32 esp2; |
105 | __u16 ss2; |
106 | __u16 ss2; |
106 | unsigned : 16; |
107 | unsigned : 16; |
107 | __u32 cr3; |
108 | __u32 cr3; |
108 | __u32 eip; |
109 | __u32 eip; |
109 | __u32 eflags; |
110 | __u32 eflags; |
110 | __u32 eax; |
111 | __u32 eax; |
111 | __u32 ecx; |
112 | __u32 ecx; |
112 | __u32 edx; |
113 | __u32 edx; |
113 | __u32 ebx; |
114 | __u32 ebx; |
114 | __u32 esp; |
115 | __u32 esp; |
115 | __u32 ebp; |
116 | __u32 ebp; |
116 | __u32 esi; |
117 | __u32 esi; |
117 | __u32 edi; |
118 | __u32 edi; |
118 | __u16 es; |
119 | __u16 es; |
119 | unsigned : 16; |
120 | unsigned : 16; |
120 | __u16 cs; |
121 | __u16 cs; |
121 | unsigned : 16; |
122 | unsigned : 16; |
122 | __u16 ss; |
123 | __u16 ss; |
123 | unsigned : 16; |
124 | unsigned : 16; |
124 | __u16 ds; |
125 | __u16 ds; |
125 | unsigned : 16; |
126 | unsigned : 16; |
126 | __u16 fs; |
127 | __u16 fs; |
127 | unsigned : 16; |
128 | unsigned : 16; |
128 | __u16 gs; |
129 | __u16 gs; |
129 | unsigned : 16; |
130 | unsigned : 16; |
130 | __u16 ldtr; |
131 | __u16 ldtr; |
131 | unsigned : 16; |
132 | unsigned : 16; |
132 | unsigned : 16; |
133 | unsigned : 16; |
133 | __u16 iomap_base; |
134 | __u16 iomap_base; |
134 | __u8 iomap[0x10000+1]; /* 64K + 1 terminating byte */ |
135 | __u8 iomap[TSS_IOMAP_SIZE]; |
135 | } __attribute__ ((packed)); |
136 | } __attribute__ ((packed)); |
136 | typedef struct tss tss_t; |
137 | typedef struct tss tss_t; |
137 | 138 | ||
138 | extern ptr_16_32_t gdtr; |
139 | extern ptr_16_32_t gdtr; |
139 | extern ptr_16_32_t bootstrap_gdtr; |
140 | extern ptr_16_32_t bootstrap_gdtr; |
140 | extern ptr_16_32_t protected_ap_gdtr; |
141 | extern ptr_16_32_t protected_ap_gdtr; |
141 | extern struct tss *tss_p; |
142 | extern struct tss *tss_p; |
142 | 143 | ||
143 | extern descriptor_t gdt[]; |
144 | extern descriptor_t gdt[]; |
144 | 145 | ||
145 | extern void pm_init(void); |
146 | extern void pm_init(void); |
146 | 147 | ||
147 | extern void gdt_setbase(descriptor_t *d, __address base); |
148 | extern void gdt_setbase(descriptor_t *d, __address base); |
148 | extern void gdt_setlimit(descriptor_t *d, __u32 limit); |
149 | extern void gdt_setlimit(descriptor_t *d, __u32 limit); |
149 | 150 | ||
150 | extern void idt_init(void); |
151 | extern void idt_init(void); |
151 | extern void idt_setoffset(idescriptor_t *d, __address offset); |
152 | extern void idt_setoffset(idescriptor_t *d, __address offset); |
152 | 153 | ||
153 | extern void tss_initialize(tss_t *t); |
154 | extern void tss_initialize(tss_t *t); |
154 | extern void set_tls_desc(__address tls); |
155 | extern void set_tls_desc(__address tls); |
155 | 156 | ||
156 | #endif /* __ASM__ */ |
157 | #endif /* __ASM__ */ |
157 | 158 | ||
158 | #endif |
159 | #endif |
159 | 160 |