92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*
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* Copyright (c) 2015 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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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 ZEPHYR_INCLUDE_DRIVERS_SYSTEM_TIMER_H_
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#define ZEPHYR_INCLUDE_DRIVERS_SYSTEM_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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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(s32_t ticks);
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extern void _timer_idle_exit(void);
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#else
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#define _timer_idle_enter(ticks) do { } while ((0))
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#define _timer_idle_exit() do { } while ((0))
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#endif /* CONFIG_TICKLESS_IDLE */
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extern void _nano_sys_clock_tick_announce(s32_t ticks);
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#ifdef CONFIG_TICKLESS_KERNEL
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extern void _set_time(u32_t time);
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extern u32_t _get_program_time(void);
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extern u32_t _get_remaining_program_time(void);
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extern u32_t _get_elapsed_program_time(void);
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extern u64_t _get_elapsed_clock_time(void);
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#endif
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extern int sys_clock_device_ctrl(struct device *device,
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u32_t ctrl_command, void *context);
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/*
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* Currently regarding timers, only loapic timer and arcv2_timer0 implements
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* device pm functionality. For other timers, use default handler in case
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* the app enables CONFIG_DEVICE_POWER_MANAGEMENT.
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*/
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#if !defined(CONFIG_LOAPIC_TIMER) && !defined(CONFIG_ARCV2_TIMER)
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#define sys_clock_device_ctrl device_pm_control_nop
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#endif
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extern s32_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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/**
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* @brief Account for the tick due to the timer interrupt
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*
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* @return N/A
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*/
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static inline void _sys_clock_final_tick_announce(void)
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{
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/*
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* Ticks are both announced and immediately processed at interrupt
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* level. Thus there is only one tick left to announce (and process).
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*/
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_sys_idle_elapsed_ticks = 1;
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_sys_clock_tick_announce();
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}
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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 /* ZEPHYR_INCLUDE_DRIVERS_SYSTEM_TIMER_H_ */
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