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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 | #include <arch/types.h> |
38 | #include <arch/types.h> |
39 | #include <typedefs.h> |
39 | #include <typedefs.h> |
40 | #include <adt/list.h> |
40 | #include <adt/list.h> |
41 | #include <ipc/irq.h> |
41 | #include <ipc/irq.h> |
42 | #include <synch/spinlock.h> |
42 | #include <synch/spinlock.h> |
43 | 43 | ||
44 | typedef enum { |
44 | typedef enum { |
45 | IRQ_DECLINE, /**< Decline to service. */ |
45 | IRQ_DECLINE, /**< Decline to service. */ |
46 | IRQ_ACCEPT /**< Accept to service. */ |
46 | IRQ_ACCEPT /**< Accept to service. */ |
47 | } irq_ownership_t; |
47 | } irq_ownership_t; |
48 | 48 | ||
49 | typedef enum { |
49 | typedef enum { |
50 | IRQ_TRIGGER_LEVEL = 1, |
50 | IRQ_TRIGGER_LEVEL = 1, |
51 | IRQ_TRIGGER_EDGE |
51 | IRQ_TRIGGER_EDGE |
52 | } irq_trigger_t; |
52 | } irq_trigger_t; |
53 | 53 | ||
54 | typedef void (* irq_handler_t)(irq_t *irq, void *arg, ...); |
54 | typedef void (* irq_handler_t)(irq_t *irq, void *arg, ...); |
55 | 55 | ||
56 | /** Structure representing one device IRQ. |
56 | /** Structure representing one device IRQ. |
57 | * |
57 | * |
58 | * If one device has multiple interrupts, there will |
58 | * If one device has multiple interrupts, there will |
59 | * be multiple irq_t instantions with the same |
59 | * be multiple irq_t instantions with the same |
60 | * devno. |
60 | * devno. |
61 | */ |
61 | */ |
62 | struct irq { |
62 | struct irq { |
63 | /** Hash table link. */ |
63 | /** Hash table link. */ |
64 | link_t link; |
64 | link_t link; |
65 | 65 | ||
66 | /** Lock protecting everything in this structure |
66 | /** Lock protecting everything in this structure |
67 | * except the link member. When both the IRQ |
67 | * except the link member. When both the IRQ |
68 | * hash table lock and this lock are to be acquired, |
68 | * hash table lock and this lock are to be acquired, |
69 | * this lock must not be taken first. |
69 | * this lock must not be taken first. |
70 | */ |
70 | */ |
71 | SPINLOCK_DECLARE(lock); |
71 | SPINLOCK_DECLARE(lock); |
72 | 72 | ||
73 | /** Unique device number. -1 if not yet assigned. */ |
73 | /** Unique device number. -1 if not yet assigned. */ |
74 | devno_t devno; |
74 | devno_t devno; |
75 | 75 | ||
76 | /** Actual IRQ number. -1 if not yet assigned. */ |
76 | /** Actual IRQ number. -1 if not yet assigned. */ |
77 | inr_t inr; |
77 | inr_t inr; |
78 | /** Trigger level of the IRQ.*/ |
78 | /** Trigger level of the IRQ.*/ |
79 | irq_trigger_t trigger; |
79 | irq_trigger_t trigger; |
80 | /** Claim ownership of the IRQ. */ |
80 | /** Claim ownership of the IRQ. */ |
81 | irq_ownership_t (* claim)(void); |
81 | irq_ownership_t (* claim)(void); |
82 | /** Handler for this IRQ and device. */ |
82 | /** Handler for this IRQ and device. */ |
83 | irq_handler_t handler; |
83 | irq_handler_t handler; |
84 | /** Argument for the handler. */ |
84 | /** Argument for the handler. */ |
85 | void *arg; |
85 | void *arg; |
86 | 86 | ||
87 | /** Notification configuration structure. */ |
87 | /** Notification configuration structure. */ |
88 | ipc_notif_cfg_t notif_cfg; |
88 | ipc_notif_cfg_t notif_cfg; |
89 | }; |
89 | }; |
90 | 90 | ||
91 | extern void irq_init(count_t inrs, count_t chains); |
91 | extern void irq_init(count_t inrs, count_t chains); |
92 | extern void irq_initialize(irq_t *irq); |
92 | extern void irq_initialize(irq_t *irq); |
93 | extern void irq_register(irq_t *irq); |
93 | extern void irq_register(irq_t *irq); |
94 | extern irq_t *irq_dispatch_and_lock(inr_t inr); |
94 | extern irq_t *irq_dispatch_and_lock(inr_t inr); |
95 | extern irq_t *irq_find_and_lock(inr_t inr, devno_t devno); |
95 | extern irq_t *irq_find_and_lock(inr_t inr, devno_t devno); |
96 | 96 | ||
97 | #endif |
97 | #endif |
98 | 98 | ||
99 | /** @} |
99 | /** @} |
100 | */ |
100 | */ |
101 | 101 |