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