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