75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/* system_timer.h - timer driver API */
|
|
|
|
/*
|
|
* Copyright (c) 2015 Wind River Systems, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
* DESCRIPTION
|
|
*
|
|
* Declare API implemented by system timer driver and used by kernel components.
|
|
*/
|
|
|
|
#ifndef _TIMER__H_
|
|
#define _TIMER__H_
|
|
|
|
#ifdef _ASMLANGUAGE
|
|
|
|
GTEXT(_timer_int_handler)
|
|
|
|
#else /* _ASMLANGUAGE */
|
|
|
|
#include <device.h>
|
|
|
|
extern uint32_t _sys_clock_cycle_get(void);
|
|
extern int _sys_clock_driver_init(struct device *device);
|
|
/*
|
|
* Timer interrupt handler is one of the routines that the driver
|
|
* has to implement, but it is not necessarily an external function.
|
|
* The driver may implement it and use only when setting an
|
|
* interrupt handler by calling irq_connect.
|
|
*/
|
|
extern void _timer_int_handler(void *arg);
|
|
|
|
#ifdef CONFIG_SYSTEM_CLOCK_DISABLE
|
|
extern void sys_clock_disable(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_TICKLESS_IDLE
|
|
extern void _timer_idle_enter(int32_t ticks);
|
|
extern void _timer_idle_exit(void);
|
|
#endif /* TIMER_SUPPORTS_TICKLESS */
|
|
|
|
extern uint32_t _nano_get_earliest_deadline(void);
|
|
|
|
#if defined(CONFIG_NANO_TIMEOUTS) || defined(CONFIG_NANO_TIMERS)
|
|
extern void _nano_sys_clock_tick_announce(uint32_t ticks);
|
|
#else
|
|
#define _nano_sys_clock_tick_announce(ticks) do { } while ((0))
|
|
#endif
|
|
|
|
#ifdef CONFIG_MICROKERNEL
|
|
#define _sys_clock_tick_announce() \
|
|
isr_event_send(TICK_EVENT)
|
|
#else
|
|
extern uint32_t _sys_idle_elapsed_ticks;
|
|
#define _sys_clock_tick_announce() \
|
|
_nano_sys_clock_tick_announce(_sys_idle_elapsed_ticks)
|
|
#endif
|
|
|
|
#endif /* _ASMLANGUAGE */
|
|
|
|
#endif /* _TIMER__H_ */
|