| /* |
| * 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. |
| */ |
| |
| /** |
| * @file |
| * @brief Timer driver API |
| * |
| * |
| * Declare API implemented by system timer driver and used by kernel components. |
| */ |
| |
| #ifndef _TIMER__H_ |
| #define _TIMER__H_ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifdef _ASMLANGUAGE |
| |
| GTEXT(_timer_int_handler) |
| |
| #else /* _ASMLANGUAGE */ |
| |
| #include <device.h> |
| |
| 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 /* CONFIG_TICKLESS_IDLE */ |
| |
| extern uint32_t _nano_get_earliest_deadline(void); |
| |
| extern void _nano_sys_clock_tick_announce(int32_t ticks); |
| |
| #ifdef CONFIG_MICROKERNEL |
| extern void (*_do_sys_clock_tick_announce)(kevent_t); |
| #define _sys_clock_tick_announce() \ |
| _do_sys_clock_tick_announce(TICK_EVENT) |
| #else |
| extern int32_t _sys_idle_elapsed_ticks; |
| #define _sys_clock_tick_announce() \ |
| _nano_sys_clock_tick_announce(_sys_idle_elapsed_ticks) |
| #endif |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _TIMER__H_ */ |