2015-04-11 07:44:37 +08:00
|
|
|
/* system_timer.h - timer driver API */
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Copyright (c) 2015 Wind River Systems, Inc.
|
|
|
|
|
*
|
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
|
* modification, are permitted provided that the following conditions are met:
|
|
|
|
|
*
|
|
|
|
|
* 1) Redistributions of source code must retain the above copyright notice,
|
|
|
|
|
* this list of conditions and the following disclaimer.
|
|
|
|
|
*
|
|
|
|
|
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
|
|
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
|
|
|
* and/or other materials provided with the distribution.
|
|
|
|
|
*
|
|
|
|
|
* 3) Neither the name of Wind River Systems nor the names of its contributors
|
|
|
|
|
* may be used to endorse or promote products derived from this software without
|
|
|
|
|
* specific prior written permission.
|
|
|
|
|
*
|
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
|
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
|
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
|
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
|
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
|
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
|
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
|
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
|
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
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 */
|
|
|
|
|
|
|
|
|
|
extern uint32_t timer_read(void);
|
|
|
|
|
extern void timer_driver(int prio);
|
|
|
|
|
/*
|
|
|
|
|
* 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_TIMER_DISABLE
|
|
|
|
|
extern void timer_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 */
|
|
|
|
|
|
2015-05-02 04:53:30 +08:00
|
|
|
#ifdef CONFIG_MICROKERNEL
|
|
|
|
|
#define _sys_clock_tick_announce() \
|
|
|
|
|
nano_isr_stack_push(&_k_command_stack, TICK_EVENT)
|
|
|
|
|
#else
|
|
|
|
|
extern void _do_sys_clock_tick_announce(uint32_t ticks);
|
|
|
|
|
extern uint32_t _sys_idle_elapsed_ticks;
|
|
|
|
|
#define _sys_clock_tick_announce() \
|
|
|
|
|
_do_sys_clock_tick_announce(_sys_idle_elapsed_ticks)
|
|
|
|
|
#endif
|
|
|
|
|
|
2015-04-11 07:44:37 +08:00
|
|
|
#endif /* _ASMLANGUAGE */
|
|
|
|
|
|
|
|
|
|
#endif /* _TIMER__H_ */
|
