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| 1 | /* |
1 | /* |
| 2 | * Copyright (c) 2006 Jakub Jermar |
2 | * Copyright (c) 2006 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 genericddi |
29 | /** @addtogroup genericddi |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| 35 | #ifndef KERN_IRQ_H_ |
35 | #ifndef KERN_IRQ_H_ |
| 36 | #define KERN_IRQ_H_ |
36 | #define KERN_IRQ_H_ |
| 37 | 37 | ||
| 38 | typedef enum { |
38 | typedef enum { |
| 39 | CMD_MEM_READ_1 = 0, |
39 | CMD_MEM_READ_1 = 0, |
| 40 | CMD_MEM_READ_2, |
40 | CMD_MEM_READ_2, |
| 41 | CMD_MEM_READ_4, |
41 | CMD_MEM_READ_4, |
| 42 | CMD_MEM_READ_8, |
42 | CMD_MEM_READ_8, |
| 43 | CMD_MEM_WRITE_1, |
43 | CMD_MEM_WRITE_1, |
| 44 | CMD_MEM_WRITE_2, |
44 | CMD_MEM_WRITE_2, |
| 45 | CMD_MEM_WRITE_4, |
45 | CMD_MEM_WRITE_4, |
| 46 | CMD_MEM_WRITE_8, |
46 | CMD_MEM_WRITE_8, |
| 47 | CMD_PORT_READ_1, |
47 | CMD_PORT_READ_1, |
| 48 | CMD_PORT_WRITE_1, |
48 | CMD_PORT_WRITE_1, |
| 49 | CMD_IA64_GETCHAR, |
49 | CMD_IA64_GETCHAR, |
| 50 | CMD_PPC32_GETCHAR, |
50 | CMD_PPC32_GETCHAR, |
| 51 | CMD_LAST |
51 | CMD_LAST |
| 52 | } irq_cmd_type; |
52 | } irq_cmd_type; |
| 53 | 53 | ||
| 54 | typedef struct { |
54 | typedef struct { |
| 55 | irq_cmd_type cmd; |
55 | irq_cmd_type cmd; |
| 56 | void *addr; |
56 | void *addr; |
| 57 | unsigned long long value; |
57 | unsigned long long value; |
| 58 | int dstarg; |
58 | int dstarg; |
| 59 | } irq_cmd_t; |
59 | } irq_cmd_t; |
| 60 | 60 | ||
| 61 | typedef struct { |
61 | typedef struct { |
| 62 | unsigned int cmdcount; |
62 | unsigned int cmdcount; |
| 63 | irq_cmd_t *cmds; |
63 | irq_cmd_t *cmds; |
| 64 | } irq_code_t; |
64 | } irq_code_t; |
| 65 | 65 | ||
| 66 | #ifdef KERNEL |
66 | #ifdef KERNEL |
| 67 | 67 | ||
| 68 | #include <arch/types.h> |
68 | #include <arch/types.h> |
| 69 | #include <adt/list.h> |
69 | #include <adt/list.h> |
| 70 | #include <synch/spinlock.h> |
70 | #include <synch/spinlock.h> |
| 71 | #include <proc/task.h> |
71 | #include <proc/task.h> |
| 72 | 72 | ||
| 73 | typedef enum { |
73 | typedef enum { |
| 74 | IRQ_DECLINE, /**< Decline to service. */ |
74 | IRQ_DECLINE, /**< Decline to service. */ |
| 75 | IRQ_ACCEPT /**< Accept to service. */ |
75 | IRQ_ACCEPT /**< Accept to service. */ |
| 76 | } irq_ownership_t; |
76 | } irq_ownership_t; |
| 77 | 77 | ||
| 78 | typedef enum { |
78 | typedef enum { |
| 79 | IRQ_TRIGGER_LEVEL = 1, |
79 | IRQ_TRIGGER_LEVEL = 1, |
| 80 | IRQ_TRIGGER_EDGE |
80 | IRQ_TRIGGER_EDGE |
| 81 | } irq_trigger_t; |
81 | } irq_trigger_t; |
| 82 | 82 | ||
| 83 | struct irq; |
83 | struct irq; |
| 84 | typedef void (* irq_handler_t)(struct irq *irq, void *arg, ...); |
84 | typedef void (* irq_handler_t)(struct irq *irq, void *arg, ...); |
| 85 | 85 | ||
| 86 | /** IPC notification config structure. |
86 | /** IPC notification config structure. |
| 87 | * |
87 | * |
| 88 | * Primarily, this structure is encapsulated in the irq_t structure. |
88 | * Primarily, this structure is encapsulated in the irq_t structure. |
| 89 | * It is protected by irq_t::lock. |
89 | * It is protected by irq_t::lock. |
| 90 | */ |
90 | */ |
| 91 | typedef struct { |
91 | typedef struct { |
| 92 | /** When false, notifications are not sent. */ |
92 | /** When false, notifications are not sent. */ |
| 93 | bool notify; |
93 | bool notify; |
| 94 | /** Answerbox for notifications. */ |
94 | /** Answerbox for notifications. */ |
| 95 | answerbox_t *answerbox; |
95 | answerbox_t *answerbox; |
| 96 | /** Method to be used for the notification. */ |
96 | /** Method to be used for the notification. */ |
| 97 | unative_t method; |
97 | unative_t method; |
| 98 | /** Top-half pseudocode. */ |
98 | /** Top-half pseudocode. */ |
| 99 | irq_code_t *code; |
99 | irq_code_t *code; |
| 100 | /** Counter. */ |
100 | /** Counter. */ |
| 101 | count_t counter; |
101 | count_t counter; |
| 102 | /** |
102 | /** |
| 103 | * Link between IRQs that are notifying the same answerbox. The list is |
103 | * Link between IRQs that are notifying the same answerbox. The list is |
| 104 | * protected by the answerbox irq_lock. |
104 | * protected by the answerbox irq_lock. |
| 105 | */ |
105 | */ |
| 106 | link_t link; |
106 | link_t link; |
| 107 | } ipc_notif_cfg_t; |
107 | } ipc_notif_cfg_t; |
| 108 | 108 | ||
| 109 | /** Structure representing one device IRQ. |
109 | /** Structure representing one device IRQ. |
| 110 | * |
110 | * |
| 111 | * If one device has multiple interrupts, there will be multiple irq_t |
111 | * If one device has multiple interrupts, there will be multiple irq_t |
| 112 | * instantions with the same devno. |
112 | * instantions with the same devno. |
| 113 | */ |
113 | */ |
| 114 | typedef struct irq { |
114 | typedef struct irq { |
| 115 | /** Hash table link. */ |
115 | /** Hash table link. */ |
| 116 | link_t link; |
116 | link_t link; |
| 117 | 117 | ||
| 118 | /** Lock protecting everything in this structure |
118 | /** Lock protecting everything in this structure |
| 119 | * except the link member. When both the IRQ |
119 | * except the link member. When both the IRQ |
| 120 | * hash table lock and this lock are to be acquired, |
120 | * hash table lock and this lock are to be acquired, |
| 121 | * this lock must not be taken first. |
121 | * this lock must not be taken first. |
| 122 | */ |
122 | */ |
| 123 | SPINLOCK_DECLARE(lock); |
123 | SPINLOCK_DECLARE(lock); |
| 124 | 124 | ||
| 125 | /** Send EOI before processing the interrupt. |
125 | /** Unique device number. -1 if not yet assigned. */ |
| 126 | * This is essential for timer interrupt which |
126 | devno_t devno; |
| 127 | * has to be acknowledged before doing preemption |
127 | |
| 128 | * to make sure another timer interrupt will |
128 | /** Actual IRQ number. -1 if not yet assigned. */ |
| 129 | * be eventually generated. |
129 | inr_t inr; |
| 130 | */ |
130 | /** Trigger level of the IRQ.*/ |
| 131 | bool preack; |
131 | irq_trigger_t trigger; |
| 132 | 132 | /** Claim ownership of the IRQ. */ |
|
| 133 | /** Unique device number. -1 if not yet assigned. */ |
133 | irq_ownership_t (* claim)(void); |
| 134 | devno_t devno; |
134 | /** Handler for this IRQ and device. */ |
| 135 | 135 | irq_handler_t handler; |
|
| 136 | /** Actual IRQ number. -1 if not yet assigned. */ |
136 | /** Argument for the handler. */ |
| 137 | inr_t inr; |
137 | void *arg; |
| 138 | /** Trigger level of the IRQ. */ |
138 | |
| 139 | irq_trigger_t trigger; |
139 | /** Notification configuration structure. */ |
| 140 | /** Claim ownership of the IRQ. */ |
140 | ipc_notif_cfg_t notif_cfg; |
| 141 | irq_ownership_t (* claim)(void); |
141 | } irq_t; |
| 142 | /** Handler for this IRQ and device. */ |
142 | |
| 143 | irq_handler_t handler; |
143 | extern void irq_init(count_t inrs, count_t chains); |
| 144 | /** Argument for the handler. */ |
144 | extern void irq_initialize(irq_t *irq); |
| 145 | void *arg; |
145 | extern void irq_register(irq_t *irq); |
| 146 | 146 | extern irq_t *irq_dispatch_and_lock(inr_t inr); |
|
| 147 | /** Notification configuration structure. */ |
147 | extern irq_t *irq_find_and_lock(inr_t inr, devno_t devno); |
| 148 | ipc_notif_cfg_t notif_cfg; |
148 | |
| 149 | } irq_t; |
149 | #endif |
| 150 | 150 | ||
| 151 | extern void irq_init(count_t inrs, count_t chains); |
151 | #endif |
| 152 | extern void irq_initialize(irq_t *irq); |
152 | |
| 153 | extern void irq_register(irq_t *irq); |
153 | /** @} |
| 154 | extern irq_t *irq_dispatch_and_lock(inr_t inr); |
154 | */ |
| 155 | extern irq_t *irq_find_and_lock(inr_t inr, devno_t devno); |
- | |
| 156 | - | ||
| 157 | #endif |
- | |
| 158 | - | ||
| 159 | #endif |
- | |
| 160 | - | ||
| 161 | /** @} |
- | |
| 162 | */ |
- | |