Rev 1920 | Rev 1922 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1920 | Rev 1921 | ||
---|---|---|---|
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 <adt/list.h> |
39 | #include <adt/list.h> |
- | 40 | #include <ipc/ipc.h> |
|
- | 41 | #include <ipc/irq.h> |
|
- | 42 | #include <atomic.h> |
|
- | 43 | #include <synch/spinlock.h> |
|
40 | 44 | ||
41 | typedef enum { |
45 | typedef enum { |
42 | IRQ_DECLINE, /**< Decline to service. */ |
46 | IRQ_DECLINE, /**< Decline to service. */ |
43 | IRQ_ACCEPT /**< Accept to service. */ |
47 | IRQ_ACCEPT /**< Accept to service. */ |
44 | } irq_ownership_t; |
48 | } irq_ownership_t; |
45 | 49 | ||
46 | typedef enum { |
50 | typedef enum { |
47 | IRQ_TRIGGER_LEVEL = 1, |
51 | IRQ_TRIGGER_LEVEL = 1, |
48 | IRQ_TRIGGER_EDGE |
52 | IRQ_TRIGGER_EDGE |
49 | } irq_trigger_t; |
53 | } irq_trigger_t; |
50 | 54 | ||
51 | typedef struct irq irq_t; |
55 | typedef struct irq irq_t; |
52 | 56 | ||
53 | typedef void (* irq_handler_t)(irq_t *irq, void *arg, ...); |
57 | typedef void (* irq_handler_t)(irq_t *irq, void *arg, ...); |
54 | 58 | ||
55 | /** Structure representing one device IRQ. |
59 | /** Structure representing one device IRQ. |
56 | * |
60 | * |
57 | * If one device has multiple interrupts, there will |
61 | * If one device has multiple interrupts, there will |
58 | * be multiple irq_t instantions with the same |
62 | * be multiple irq_t instantions with the same |
59 | * devno. |
63 | * devno. |
60 | */ |
64 | */ |
61 | struct irq { |
65 | struct irq { |
62 | /** Hash table link. */ |
66 | /** Hash table link. */ |
63 | link_t link; |
67 | link_t link; |
64 | 68 | ||
- | 69 | /** Lock protecting everything in this structure |
|
- | 70 | * except the link member. When both the IRQ |
|
- | 71 | * hash table lock and this lock are to be acquired, |
|
- | 72 | * this lock must not be taken first. |
|
- | 73 | */ |
|
- | 74 | SPINLOCK_DECLARE(lock); |
|
- | 75 | ||
65 | /** Unique device number. -1 if not yet assigned. */ |
76 | /** Unique device number. -1 if not yet assigned. */ |
66 | devno_t devno; |
77 | devno_t devno; |
67 | 78 | ||
68 | /** Actual IRQ number. -1 if not yet assigned. */ |
79 | /** Actual IRQ number. -1 if not yet assigned. */ |
69 | inr_t inr; |
80 | inr_t inr; |
70 | /** Task ID of the task to be notified about the IRQ or 0. */ |
- | |
71 | task_id_t notif; |
- | |
72 | /** Trigger level of the IRQ.*/ |
81 | /** Trigger level of the IRQ.*/ |
73 | irq_trigger_t trigger; |
82 | irq_trigger_t trigger; |
74 | /** Claim ownership of the IRQ. */ |
83 | /** Claim ownership of the IRQ. */ |
75 | irq_ownership_t (* claim)(void); |
84 | irq_ownership_t (* claim)(void); |
76 | /** Handler for this IRQ and device. */ |
85 | /** Handler for this IRQ and device. */ |
77 | irq_handler_t handler; |
86 | irq_handler_t handler; |
78 | /** Argument for the handler. */ |
87 | /** Argument for the handler. */ |
79 | void *arg; |
88 | void *arg; |
- | 89 | ||
- | 90 | /** Answerbox of the task that wanted to be notified. */ |
|
- | 91 | answerbox_t *notif_answerbox; |
|
- | 92 | /** Pseudo-code to be performed by the top-half |
|
- | 93 | * before a notification is sent. */ |
|
- | 94 | irq_code_t *code; |
|
- | 95 | /** Counter of IRQ notifications. */ |
|
- | 96 | atomic_t counter; |
|
80 | }; |
97 | }; |
81 | 98 | ||
82 | extern void irq_init(count_t inrs, count_t chains); |
99 | extern void irq_init(count_t inrs, count_t chains); |
83 | extern void irq_initialize(irq_t *irq); |
100 | extern void irq_initialize(irq_t *irq); |
84 | extern void irq_register(irq_t *irq); |
101 | extern void irq_register(irq_t *irq); |
85 | extern irq_t *irq_dispatch(inr_t inr); |
102 | extern irq_t *irq_dispatch(inr_t inr); |
86 | 103 | ||
87 | #endif |
104 | #endif |
88 | 105 | ||
89 | /** @} |
106 | /** @} |
90 | */ |
107 | */ |
91 | 108 |