1 | /** |
---|
2 | * @file |
---|
3 | * |
---|
4 | * @ingroup ClassicTimerImpl |
---|
5 | * |
---|
6 | * @brief Classic Timer Implementation |
---|
7 | */ |
---|
8 | |
---|
9 | /* |
---|
10 | * COPYRIGHT (c) 1989-2011. |
---|
11 | * On-Line Applications Research Corporation (OAR). |
---|
12 | * |
---|
13 | * Copyright (c) 2016 embedded brains GmbH. |
---|
14 | * |
---|
15 | * The license and distribution terms for this file may be |
---|
16 | * found in the file LICENSE in this distribution or at |
---|
17 | * http://www.rtems.org/license/LICENSE. |
---|
18 | */ |
---|
19 | |
---|
20 | #ifndef _RTEMS_RTEMS_TIMER_INL |
---|
21 | #define _RTEMS_RTEMS_TIMER_INL |
---|
22 | |
---|
23 | #include <rtems/rtems/timerdata.h> |
---|
24 | #include <rtems/score/objectimpl.h> |
---|
25 | #include <rtems/score/thread.h> |
---|
26 | #include <rtems/score/watchdogimpl.h> |
---|
27 | |
---|
28 | #ifdef __cplusplus |
---|
29 | extern "C" { |
---|
30 | #endif |
---|
31 | |
---|
32 | /** |
---|
33 | * @defgroup ClassicTimerImpl Classic Timer Implementation |
---|
34 | * |
---|
35 | * @ingroup ClassicTimer |
---|
36 | * |
---|
37 | * @{ |
---|
38 | */ |
---|
39 | |
---|
40 | typedef struct Timer_server_Control { |
---|
41 | ISR_LOCK_MEMBER( Lock ) |
---|
42 | |
---|
43 | Chain_Control Pending; |
---|
44 | |
---|
45 | Objects_Id server_id; |
---|
46 | } Timer_server_Control; |
---|
47 | |
---|
48 | /** |
---|
49 | * @brief Pointer to default timer server control block. |
---|
50 | * |
---|
51 | * This value is @c NULL when the default timer server is not initialized. |
---|
52 | */ |
---|
53 | extern Timer_server_Control *volatile _Timer_server; |
---|
54 | |
---|
55 | /** |
---|
56 | * The following defines the information control block used to manage |
---|
57 | * this class of objects. |
---|
58 | */ |
---|
59 | extern Objects_Information _Timer_Information; |
---|
60 | |
---|
61 | /** |
---|
62 | * @brief Timer_Allocate |
---|
63 | * |
---|
64 | * This function allocates a timer control block from |
---|
65 | * the inactive chain of free timer control blocks. |
---|
66 | */ |
---|
67 | RTEMS_INLINE_ROUTINE Timer_Control *_Timer_Allocate( void ) |
---|
68 | { |
---|
69 | return (Timer_Control *) _Objects_Allocate( &_Timer_Information ); |
---|
70 | } |
---|
71 | |
---|
72 | /** |
---|
73 | * @brief Timer_Free |
---|
74 | * |
---|
75 | * This routine frees a timer control block to the |
---|
76 | * inactive chain of free timer control blocks. |
---|
77 | */ |
---|
78 | RTEMS_INLINE_ROUTINE void _Timer_Free ( |
---|
79 | Timer_Control *the_timer |
---|
80 | ) |
---|
81 | { |
---|
82 | _Objects_Free( &_Timer_Information, &the_timer->Object ); |
---|
83 | } |
---|
84 | |
---|
85 | RTEMS_INLINE_ROUTINE Timer_Control *_Timer_Get( |
---|
86 | Objects_Id id, |
---|
87 | ISR_lock_Context *lock_context |
---|
88 | ) |
---|
89 | { |
---|
90 | return (Timer_Control *) _Objects_Get( |
---|
91 | id, |
---|
92 | lock_context, |
---|
93 | &_Timer_Information |
---|
94 | ); |
---|
95 | } |
---|
96 | |
---|
97 | RTEMS_INLINE_ROUTINE Per_CPU_Control *_Timer_Acquire_critical( |
---|
98 | Timer_Control *the_timer, |
---|
99 | ISR_lock_Context *lock_context |
---|
100 | ) |
---|
101 | { |
---|
102 | Per_CPU_Control *cpu; |
---|
103 | |
---|
104 | cpu = _Watchdog_Get_CPU( &the_timer->Ticker ); |
---|
105 | _Watchdog_Per_CPU_acquire_critical( cpu, lock_context ); |
---|
106 | |
---|
107 | return cpu; |
---|
108 | } |
---|
109 | |
---|
110 | RTEMS_INLINE_ROUTINE void _Timer_Release( |
---|
111 | Per_CPU_Control *cpu, |
---|
112 | ISR_lock_Context *lock_context |
---|
113 | ) |
---|
114 | { |
---|
115 | _Watchdog_Per_CPU_release_critical( cpu, lock_context ); |
---|
116 | _ISR_lock_ISR_enable( lock_context ); |
---|
117 | } |
---|
118 | |
---|
119 | RTEMS_INLINE_ROUTINE bool _Timer_Is_interval_class( |
---|
120 | Timer_Classes the_class |
---|
121 | ) |
---|
122 | { |
---|
123 | Timer_Classes mask = |
---|
124 | TIMER_CLASS_BIT_NOT_DORMANT | TIMER_CLASS_BIT_TIME_OF_DAY; |
---|
125 | |
---|
126 | return ( the_class & mask ) == TIMER_CLASS_BIT_NOT_DORMANT; |
---|
127 | } |
---|
128 | |
---|
129 | RTEMS_INLINE_ROUTINE bool _Timer_Is_on_task_class( |
---|
130 | Timer_Classes the_class |
---|
131 | ) |
---|
132 | { |
---|
133 | Timer_Classes mask = |
---|
134 | TIMER_CLASS_BIT_NOT_DORMANT | TIMER_CLASS_BIT_ON_TASK; |
---|
135 | |
---|
136 | return ( the_class & mask ) == mask; |
---|
137 | } |
---|
138 | |
---|
139 | RTEMS_INLINE_ROUTINE Per_CPU_Watchdog_index _Timer_Watchdog_header_index( |
---|
140 | Timer_Classes the_class |
---|
141 | ) |
---|
142 | { |
---|
143 | return ( the_class & TIMER_CLASS_BIT_TIME_OF_DAY ); |
---|
144 | } |
---|
145 | |
---|
146 | RTEMS_INLINE_ROUTINE Watchdog_Interval _Timer_Get_CPU_ticks( |
---|
147 | const Per_CPU_Control *cpu |
---|
148 | ) |
---|
149 | { |
---|
150 | return (Watchdog_Interval) cpu->Watchdog.ticks; |
---|
151 | } |
---|
152 | |
---|
153 | rtems_status_code _Timer_Fire( |
---|
154 | rtems_id id, |
---|
155 | rtems_interval interval, |
---|
156 | rtems_timer_service_routine_entry routine, |
---|
157 | void *user_data, |
---|
158 | Timer_Classes the_class, |
---|
159 | Watchdog_Service_routine_entry adaptor |
---|
160 | ); |
---|
161 | |
---|
162 | rtems_status_code _Timer_Fire_after( |
---|
163 | rtems_id id, |
---|
164 | rtems_interval ticks, |
---|
165 | rtems_timer_service_routine_entry routine, |
---|
166 | void *user_data, |
---|
167 | Timer_Classes the_class, |
---|
168 | Watchdog_Service_routine_entry adaptor |
---|
169 | ); |
---|
170 | |
---|
171 | rtems_status_code _Timer_Fire_when( |
---|
172 | rtems_id id, |
---|
173 | const rtems_time_of_day *wall_time, |
---|
174 | rtems_timer_service_routine_entry routine, |
---|
175 | void *user_data, |
---|
176 | Timer_Classes the_class, |
---|
177 | Watchdog_Service_routine_entry adaptor |
---|
178 | ); |
---|
179 | |
---|
180 | void _Timer_Cancel( Per_CPU_Control *cpu, Timer_Control *the_timer ); |
---|
181 | |
---|
182 | void _Timer_Routine_adaptor( Watchdog_Control *the_watchdog ); |
---|
183 | |
---|
184 | void _Timer_server_Routine_adaptor( Watchdog_Control *the_watchdog ); |
---|
185 | |
---|
186 | RTEMS_INLINE_ROUTINE void _Timer_server_Acquire_critical( |
---|
187 | Timer_server_Control *timer_server, |
---|
188 | ISR_lock_Context *lock_context |
---|
189 | ) |
---|
190 | { |
---|
191 | _ISR_lock_Acquire( &timer_server->Lock, lock_context ); |
---|
192 | } |
---|
193 | |
---|
194 | RTEMS_INLINE_ROUTINE void _Timer_server_Release_critical( |
---|
195 | Timer_server_Control *timer_server, |
---|
196 | ISR_lock_Context *lock_context |
---|
197 | ) |
---|
198 | { |
---|
199 | _ISR_lock_Release( &timer_server->Lock, lock_context ); |
---|
200 | } |
---|
201 | |
---|
202 | /**@}*/ |
---|
203 | |
---|
204 | #ifdef __cplusplus |
---|
205 | } |
---|
206 | #endif |
---|
207 | |
---|
208 | #endif |
---|
209 | /* end of include file */ |
---|