1 | /** |
---|
2 | * @file |
---|
3 | * |
---|
4 | * @ingroup rtems_bsd_rtems |
---|
5 | * |
---|
6 | * @brief TODO. |
---|
7 | */ |
---|
8 | |
---|
9 | /* |
---|
10 | * Copyright (c) 2009, 2010 embedded brains GmbH. All rights reserved. |
---|
11 | * |
---|
12 | * embedded brains GmbH |
---|
13 | * Obere Lagerstr. 30 |
---|
14 | * 82178 Puchheim |
---|
15 | * Germany |
---|
16 | * <rtems@embedded-brains.de> |
---|
17 | * |
---|
18 | * The license and distribution terms for this file may be |
---|
19 | * found in the file LICENSE in this distribution or at |
---|
20 | * http://www.rtems.com/license/LICENSE. |
---|
21 | */ |
---|
22 | |
---|
23 | #include <rtems/freebsd/machine/rtems-bsd-config.h> |
---|
24 | |
---|
25 | #include <rtems/freebsd/sys/param.h> |
---|
26 | #include <rtems/freebsd/sys/types.h> |
---|
27 | #include <rtems/freebsd/sys/systm.h> |
---|
28 | #include <rtems/freebsd/sys/callout.h> |
---|
29 | #include <rtems/freebsd/sys/lock.h> |
---|
30 | #include <rtems/freebsd/sys/mutex.h> |
---|
31 | |
---|
32 | RTEMS_CHAIN_DEFINE_EMPTY(rtems_bsd_callout_chain); |
---|
33 | |
---|
34 | static void |
---|
35 | rtems_bsd_callout_dispatch(rtems_id id, void *arg) |
---|
36 | { |
---|
37 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
38 | struct callout *c = arg; |
---|
39 | |
---|
40 | if (c->c_lock != NULL) { |
---|
41 | sc = rtems_semaphore_obtain(c->c_lock->lo_id, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
---|
42 | BSD_ASSERT_SC(sc); |
---|
43 | } |
---|
44 | |
---|
45 | if (c->c_func != NULL) { |
---|
46 | (*c->c_func)(c->c_arg); |
---|
47 | } |
---|
48 | |
---|
49 | if (c->c_lock != NULL && (c->c_flags & CALLOUT_RETURNUNLOCKED) == 0) { |
---|
50 | sc = rtems_semaphore_release(c->c_lock->lo_id); |
---|
51 | BSD_ASSERT_SC(sc); |
---|
52 | } |
---|
53 | } |
---|
54 | |
---|
55 | void |
---|
56 | callout_init(struct callout *c, int mpsafe) |
---|
57 | { |
---|
58 | _callout_init_lock(c, mpsafe ? NULL : &Giant.lock_object, mpsafe ? CALLOUT_RETURNUNLOCKED : 0); |
---|
59 | } |
---|
60 | |
---|
61 | void |
---|
62 | _callout_init_lock(struct callout *c, struct lock_object *lock, int flags) |
---|
63 | { |
---|
64 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
65 | rtems_id id = RTEMS_ID_NONE; |
---|
66 | |
---|
67 | sc = rtems_timer_create(rtems_build_name('_', 'T', 'M', 'R'), &id); |
---|
68 | BSD_ASSERT_SC(sc); |
---|
69 | |
---|
70 | c->c_id = id; |
---|
71 | c->c_lock = lock; |
---|
72 | c->c_flags = flags; |
---|
73 | c->c_func = NULL; |
---|
74 | c->c_arg = NULL; |
---|
75 | |
---|
76 | rtems_chain_append(&rtems_bsd_callout_chain, &c->c_node); |
---|
77 | } |
---|
78 | |
---|
79 | int |
---|
80 | callout_reset(struct callout *c, int to_ticks, void (*ftn)(void *), void *arg) |
---|
81 | { |
---|
82 | /* FIXME: Integer conversions */ |
---|
83 | |
---|
84 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
85 | |
---|
86 | if (to_ticks <= 0) { |
---|
87 | to_ticks = 1; |
---|
88 | } |
---|
89 | |
---|
90 | c->c_func = ftn; |
---|
91 | c->c_arg = arg; |
---|
92 | |
---|
93 | sc = rtems_timer_server_fire_after(c->c_id, (rtems_interval) to_ticks, rtems_bsd_callout_dispatch, c); |
---|
94 | BSD_ASSERT_SC(sc); |
---|
95 | |
---|
96 | return 0; |
---|
97 | } |
---|
98 | |
---|
99 | int |
---|
100 | callout_schedule(struct callout *c, int to_ticks) |
---|
101 | { |
---|
102 | return callout_reset(c, to_ticks, c->c_func, c->c_arg); |
---|
103 | } |
---|
104 | |
---|
105 | int |
---|
106 | _callout_stop_safe(struct callout *c, int safe) |
---|
107 | { |
---|
108 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
109 | |
---|
110 | if (!safe) { |
---|
111 | sc = rtems_timer_cancel(c->c_id); |
---|
112 | BSD_ASSERT_SC(sc); |
---|
113 | } else { |
---|
114 | sc = rtems_timer_delete(c->c_id); |
---|
115 | BSD_ASSERT_SC(sc); |
---|
116 | |
---|
117 | c->c_id = RTEMS_ID_NONE; |
---|
118 | rtems_chain_extract(&c->c_node); |
---|
119 | } |
---|
120 | |
---|
121 | return 0; |
---|
122 | } |
---|