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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 | /** Unique device number. -1 if not yet assigned. */ |
125 | /** Unique device number. -1 if not yet assigned. */ |
126 | devno_t devno; |
126 | devno_t devno; |
127 | 127 | ||
128 | /** Actual IRQ number. -1 if not yet assigned. */ |
128 | /** Actual IRQ number. -1 if not yet assigned. */ |
129 | inr_t inr; |
129 | inr_t inr; |
130 | /** Trigger level of the IRQ.*/ |
130 | /** Trigger level of the IRQ.*/ |
131 | irq_trigger_t trigger; |
131 | irq_trigger_t trigger; |
132 | /** Claim ownership of the IRQ. */ |
132 | /** Claim ownership of the IRQ. */ |
133 | irq_ownership_t (* claim)(void); |
133 | irq_ownership_t (* claim)(void); |
134 | /** Handler for this IRQ and device. */ |
134 | /** Handler for this IRQ and device. */ |
135 | irq_handler_t handler; |
135 | irq_handler_t handler; |
136 | /** Argument for the handler. */ |
136 | /** Argument for the handler. */ |
137 | void *arg; |
137 | void *arg; |
138 | 138 | ||
139 | /** Notification configuration structure. */ |
139 | /** Notification configuration structure. */ |
140 | ipc_notif_cfg_t notif_cfg; |
140 | ipc_notif_cfg_t notif_cfg; |
141 | } irq_t; |
141 | } irq_t; |
142 | 142 | ||
143 | extern void irq_init(count_t inrs, count_t chains); |
143 | extern void irq_init(count_t inrs, count_t chains); |
144 | extern void irq_initialize(irq_t *irq); |
144 | extern void irq_initialize(irq_t *irq); |
145 | extern void irq_register(irq_t *irq); |
145 | extern void irq_register(irq_t *irq); |
146 | extern irq_t *irq_dispatch_and_lock(inr_t inr); |
146 | extern irq_t *irq_dispatch_and_lock(inr_t inr); |
147 | extern irq_t *irq_find_and_lock(inr_t inr, devno_t devno); |
147 | extern irq_t *irq_find_and_lock(inr_t inr, devno_t devno); |
148 | 148 | ||
149 | #endif |
149 | #endif |
150 | 150 | ||
151 | #endif |
151 | #endif |
152 | 152 | ||
153 | /** @} |
153 | /** @} |
154 | */ |
154 | */ |
155 | 155 |