138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/*
|
|
* Copyright (c) 2006-2022, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2006-02-24 Bernard first version
|
|
* 2006-05-03 Bernard add IRQ_DEBUG
|
|
* 2016-08-09 ArdaFu add interrupt enter and leave hook.
|
|
* 2018-11-22 Jesven rt_interrupt_get_nest function add disable irq
|
|
* 2021-08-15 Supperthomas fix the comment
|
|
* 2022-01-07 Gabriel Moving __on_rt_xxxxx_hook to irq.c
|
|
* 2022-07-04 Yunjie fix RT_DEBUG_LOG
|
|
* 2023-09-15 xqyjlj perf rt_hw_interrupt_disable/enable
|
|
* 2024-01-05 Shell Fixup of data racing in rt_interrupt_get_nest
|
|
*/
|
|
|
|
#include <rthw.h>
|
|
#include <rtthread.h>
|
|
|
|
#define DBG_TAG "kernel.irq"
|
|
#define DBG_LVL DBG_INFO
|
|
#include <rtdbg.h>
|
|
|
|
#if defined(RT_USING_HOOK) && defined(RT_HOOK_USING_FUNC_PTR)
|
|
|
|
static void (*rt_interrupt_enter_hook)(void);
|
|
static void (*rt_interrupt_leave_hook)(void);
|
|
|
|
/**
|
|
* @ingroup Hook
|
|
*
|
|
* @brief This function set a hook function when the system enter a interrupt
|
|
*
|
|
* @note The hook function must be simple and never be blocked or suspend.
|
|
*
|
|
* @param hook the function point to be called
|
|
*/
|
|
void rt_interrupt_enter_sethook(void (*hook)(void))
|
|
{
|
|
rt_interrupt_enter_hook = hook;
|
|
}
|
|
|
|
/**
|
|
* @ingroup Hook
|
|
*
|
|
* @brief This function set a hook function when the system exit a interrupt.
|
|
*
|
|
* @note The hook function must be simple and never be blocked or suspend.
|
|
*
|
|
* @param hook the function point to be called
|
|
*/
|
|
void rt_interrupt_leave_sethook(void (*hook)(void))
|
|
{
|
|
rt_interrupt_leave_hook = hook;
|
|
}
|
|
#endif /* RT_USING_HOOK */
|
|
|
|
/**
|
|
* @addtogroup Kernel
|
|
*/
|
|
|
|
/**@{*/
|
|
|
|
#ifdef RT_USING_SMP
|
|
#define rt_interrupt_nest rt_cpu_self()->irq_nest
|
|
#else
|
|
volatile rt_atomic_t rt_interrupt_nest = 0;
|
|
#endif /* RT_USING_SMP */
|
|
|
|
|
|
/**
|
|
* @brief This function will be invoked by BSP, when enter interrupt service routine
|
|
*
|
|
* @note Please don't invoke this routine in application
|
|
*
|
|
* @see rt_interrupt_leave
|
|
*/
|
|
rt_weak void rt_interrupt_enter(void)
|
|
{
|
|
rt_atomic_add(&(rt_interrupt_nest), 1);
|
|
RT_OBJECT_HOOK_CALL(rt_interrupt_enter_hook,());
|
|
LOG_D("irq has come..., irq current nest:%d",
|
|
(rt_int32_t)rt_atomic_load(&(rt_interrupt_nest)));
|
|
}
|
|
RTM_EXPORT(rt_interrupt_enter);
|
|
|
|
|
|
/**
|
|
* @brief This function will be invoked by BSP, when leave interrupt service routine
|
|
*
|
|
* @note Please don't invoke this routine in application
|
|
*
|
|
* @see rt_interrupt_enter
|
|
*/
|
|
rt_weak void rt_interrupt_leave(void)
|
|
{
|
|
LOG_D("irq is going to leave, irq current nest:%d",
|
|
(rt_int32_t)rt_atomic_load(&(rt_interrupt_nest)));
|
|
RT_OBJECT_HOOK_CALL(rt_interrupt_leave_hook,());
|
|
rt_atomic_sub(&(rt_interrupt_nest), 1);
|
|
|
|
}
|
|
RTM_EXPORT(rt_interrupt_leave);
|
|
|
|
|
|
/**
|
|
* @brief This function will return the nest of interrupt.
|
|
*
|
|
* User application can invoke this function to get whether current
|
|
* context is interrupt context.
|
|
*
|
|
* @return the number of nested interrupts.
|
|
*/
|
|
rt_weak rt_uint8_t rt_interrupt_get_nest(void)
|
|
{
|
|
rt_uint8_t ret;
|
|
rt_base_t level;
|
|
|
|
level = rt_hw_local_irq_disable();
|
|
ret = rt_atomic_load(&rt_interrupt_nest);
|
|
rt_hw_local_irq_enable(level);
|
|
return ret;
|
|
}
|
|
RTM_EXPORT(rt_interrupt_get_nest);
|
|
|
|
RTM_EXPORT(rt_hw_interrupt_disable);
|
|
RTM_EXPORT(rt_hw_interrupt_enable);
|
|
|
|
rt_weak rt_bool_t rt_hw_interrupt_is_disabled(void)
|
|
{
|
|
return RT_FALSE;
|
|
}
|
|
RTM_EXPORT(rt_hw_interrupt_is_disabled);
|
|
/**@}*/
|
|
|