138 lines
3.5 KiB
C
138 lines
3.5 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2006-02-24 Bernard first version
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* 2006-05-03 Bernard add IRQ_DEBUG
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* 2016-08-09 ArdaFu add interrupt enter and leave hook.
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* 2018-11-22 Jesven rt_interrupt_get_nest function add disable irq
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* 2021-08-15 Supperthomas fix the comment
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* 2022-01-07 Gabriel Moving __on_rt_xxxxx_hook to irq.c
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* 2022-07-04 Yunjie fix RT_DEBUG_LOG
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* 2023-09-15 xqyjlj perf rt_hw_interrupt_disable/enable
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#define DBG_TAG "kernel.irq"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#ifndef __on_rt_interrupt_enter_hook
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#define __on_rt_interrupt_enter_hook() __ON_HOOK_ARGS(rt_interrupt_enter_hook, ())
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#endif
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#ifndef __on_rt_interrupt_leave_hook
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#define __on_rt_interrupt_leave_hook() __ON_HOOK_ARGS(rt_interrupt_leave_hook, ())
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#endif
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#if defined(RT_USING_HOOK) && defined(RT_HOOK_USING_FUNC_PTR)
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static void (*rt_interrupt_enter_hook)(void);
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static void (*rt_interrupt_leave_hook)(void);
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/**
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* @ingroup Hook
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*
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* @brief This function set a hook function when the system enter a interrupt
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*
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* @note The hook function must be simple and never be blocked or suspend.
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*
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* @param hook the function point to be called
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*/
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void rt_interrupt_enter_sethook(void (*hook)(void))
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{
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rt_interrupt_enter_hook = hook;
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}
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/**
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* @ingroup Hook
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*
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* @brief This function set a hook function when the system exit a interrupt.
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*
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* @note The hook function must be simple and never be blocked or suspend.
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*
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* @param hook the function point to be called
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*/
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void rt_interrupt_leave_sethook(void (*hook)(void))
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{
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rt_interrupt_leave_hook = hook;
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}
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#endif /* RT_USING_HOOK */
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/**
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* @addtogroup Kernel
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*/
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/**@{*/
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#ifdef RT_USING_SMP
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#define rt_interrupt_nest rt_cpu_self()->irq_nest
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#else
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volatile rt_atomic_t rt_interrupt_nest = 0;
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#endif /* RT_USING_SMP */
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/**
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* @brief This function will be invoked by BSP, when enter interrupt service routine
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*
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* @note Please don't invoke this routine in application
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*
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* @see rt_interrupt_leave
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*/
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rt_weak void rt_interrupt_enter(void)
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{
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rt_atomic_add(&(rt_interrupt_nest), 1);
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RT_OBJECT_HOOK_CALL(rt_interrupt_enter_hook,());
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LOG_D("irq has come..., irq current nest:%d",
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(rt_int32_t)rt_atomic_load(&(rt_interrupt_nest)));
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}
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RTM_EXPORT(rt_interrupt_enter);
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/**
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* @brief This function will be invoked by BSP, when leave interrupt service routine
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*
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* @note Please don't invoke this routine in application
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*
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* @see rt_interrupt_enter
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*/
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rt_weak void rt_interrupt_leave(void)
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{
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LOG_D("irq is going to leave, irq current nest:%d",
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(rt_int32_t)rt_atomic_load(&(rt_interrupt_nest)));
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RT_OBJECT_HOOK_CALL(rt_interrupt_leave_hook,());
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rt_atomic_sub(&(rt_interrupt_nest), 1);
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}
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RTM_EXPORT(rt_interrupt_leave);
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/**
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* @brief This function will return the nest of interrupt.
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*
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* User application can invoke this function to get whether current
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* context is interrupt context.
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*
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* @return the number of nested interrupts.
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*/
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rt_weak rt_uint8_t rt_interrupt_get_nest(void)
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{
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return rt_atomic_load(&rt_interrupt_nest);
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}
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RTM_EXPORT(rt_interrupt_get_nest);
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RTM_EXPORT(rt_hw_interrupt_disable);
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RTM_EXPORT(rt_hw_interrupt_enable);
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rt_weak rt_bool_t rt_hw_interrupt_is_disabled(void)
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{
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return RT_FALSE;
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}
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RTM_EXPORT(rt_hw_interrupt_is_disabled);
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/**@}*/
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