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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 | /** @addtogroup ia32interrupt |
29 | /** @addtogroup ia32interrupt |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_ia32_INTERRUPT_H_ |
35 | #ifndef KERN_ia32_INTERRUPT_H_ |
36 | #define KERN_ia32_INTERRUPT_H_ |
36 | #define KERN_ia32_INTERRUPT_H_ |
37 | 37 | ||
38 | #include <arch/types.h> |
38 | #include <arch/types.h> |
39 | #include <arch/pm.h> |
39 | #include <arch/pm.h> |
40 | 40 | ||
41 | #define IVT_ITEMS IDT_ITEMS |
41 | #define IVT_ITEMS IDT_ITEMS |
42 | #define IVT_FIRST 0 |
42 | #define IVT_FIRST 0 |
43 | 43 | ||
44 | #define EXC_COUNT 32 |
44 | #define EXC_COUNT 32 |
45 | #define IRQ_COUNT 16 |
45 | #define IRQ_COUNT 16 |
46 | 46 | ||
47 | #define IVT_EXCBASE 0 |
47 | #define IVT_EXCBASE 0 |
48 | #define IVT_IRQBASE (IVT_EXCBASE + EXC_COUNT) |
48 | #define IVT_IRQBASE (IVT_EXCBASE + EXC_COUNT) |
49 | #define IVT_FREEBASE (IVT_IRQBASE + IRQ_COUNT) |
49 | #define IVT_FREEBASE (IVT_IRQBASE + IRQ_COUNT) |
50 | 50 | ||
51 | #define IRQ_CLK 0 |
51 | #define IRQ_CLK 0 |
52 | #define IRQ_KBD 1 |
52 | #define IRQ_KBD 1 |
53 | #define IRQ_PIC1 2 |
53 | #define IRQ_PIC1 2 |
54 | #define IRQ_PIC_SPUR 7 |
54 | #define IRQ_PIC_SPUR 7 |
55 | #define IRQ_MOUSE 12 |
55 | #define IRQ_MOUSE 12 |
56 | 56 | ||
57 | /* this one must have four least significant bits set to ones */ |
57 | /* this one must have four least significant bits set to ones */ |
58 | #define VECTOR_APIC_SPUR (IVT_ITEMS - 1) |
58 | #define VECTOR_APIC_SPUR (IVT_ITEMS - 1) |
59 | 59 | ||
60 | #if (((VECTOR_APIC_SPUR + 1) % 16) || VECTOR_APIC_SPUR >= IVT_ITEMS) |
60 | #if (((VECTOR_APIC_SPUR + 1) % 16) || VECTOR_APIC_SPUR >= IVT_ITEMS) |
61 | #error Wrong definition of VECTOR_APIC_SPUR |
61 | #error Wrong definition of VECTOR_APIC_SPUR |
62 | #endif |
62 | #endif |
63 | 63 | ||
64 | #define VECTOR_DEBUG 1 |
64 | #define VECTOR_DEBUG 1 |
65 | #define VECTOR_CLK (IVT_IRQBASE + IRQ_CLK) |
65 | #define VECTOR_CLK (IVT_IRQBASE + IRQ_CLK) |
66 | #define VECTOR_PIC_SPUR (IVT_IRQBASE + IRQ_PIC_SPUR) |
66 | #define VECTOR_PIC_SPUR (IVT_IRQBASE + IRQ_PIC_SPUR) |
67 | #define VECTOR_SYSCALL IVT_FREEBASE |
67 | #define VECTOR_SYSCALL IVT_FREEBASE |
68 | #define VECTOR_TLB_SHOOTDOWN_IPI (IVT_FREEBASE + 1) |
68 | #define VECTOR_TLB_SHOOTDOWN_IPI (IVT_FREEBASE + 1) |
69 | #define VECTOR_DEBUG_IPI (IVT_FREEBASE + 2) |
69 | #define VECTOR_DEBUG_IPI (IVT_FREEBASE + 2) |
70 | 70 | ||
71 | struct istate { |
71 | struct istate { |
72 | uint32_t eax; |
72 | uint32_t eax; |
73 | uint32_t ecx; |
73 | uint32_t ecx; |
74 | uint32_t edx; |
74 | uint32_t edx; |
75 | uint32_t esi; |
75 | uint32_t esi; |
76 | uint32_t edi; |
76 | uint32_t edi; |
77 | uint32_t ebp; |
77 | uint32_t ebp; |
78 | uint32_t ebx; |
78 | uint32_t ebx; |
79 | 79 | ||
80 | uint32_t gs; |
80 | uint32_t gs; |
81 | uint32_t fs; |
81 | uint32_t fs; |
82 | uint32_t es; |
82 | uint32_t es; |
83 | uint32_t ds; |
83 | uint32_t ds; |
84 | 84 | ||
85 | uint32_t error_word; |
85 | uint32_t error_word; |
86 | uint32_t eip; |
86 | uint32_t eip; |
87 | uint32_t cs; |
87 | uint32_t cs; |
88 | uint32_t eflags; |
88 | uint32_t eflags; |
89 | uint32_t stack[]; |
89 | uint32_t stack[]; |
90 | }; |
90 | }; |
91 | 91 | ||
92 | /** Return true if exception happened while in userspace */ |
92 | /** Return true if exception happened while in userspace */ |
93 | static inline int istate_from_uspace(istate_t *istate) |
93 | static inline int istate_from_uspace(istate_t *istate) |
94 | { |
94 | { |
95 | return !(istate->eip & 0x80000000); |
95 | return !(istate->eip & 0x80000000); |
96 | } |
96 | } |
97 | 97 | ||
98 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr) |
98 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr) |
99 | { |
99 | { |
100 | istate->eip = retaddr; |
100 | istate->eip = retaddr; |
101 | } |
101 | } |
102 | 102 | ||
103 | static inline unative_t istate_get_pc(istate_t *istate) |
103 | static inline unative_t istate_get_pc(istate_t *istate) |
104 | { |
104 | { |
105 | return istate->eip; |
105 | return istate->eip; |
106 | } |
106 | } |
107 | 107 | ||
108 | extern void (* disable_irqs_function)(uint16_t irqmask); |
108 | extern void (* disable_irqs_function)(uint16_t irqmask); |
109 | extern void (* enable_irqs_function)(uint16_t irqmask); |
109 | extern void (* enable_irqs_function)(uint16_t irqmask); |
110 | extern void (* eoi_function)(void); |
110 | extern void (* eoi_function)(void); |
111 | 111 | ||
112 | extern void decode_istate(istate_t *istate); |
112 | extern void decode_istate(istate_t *istate); |
113 | extern void interrupt_init(void); |
113 | extern void interrupt_init(void); |
114 | extern void trap_virtual_enable_irqs(uint16_t irqmask); |
114 | extern void trap_virtual_enable_irqs(uint16_t irqmask); |
115 | extern void trap_virtual_disable_irqs(uint16_t irqmask); |
115 | extern void trap_virtual_disable_irqs(uint16_t irqmask); |
116 | 116 | ||
117 | #endif |
117 | #endif |
118 | 118 | ||
119 | /** @} |
119 | /** @} |
120 | */ |
120 | */ |
121 | 121 |