rt-thread/examples/utest/testcases/kernel/smp/smp_interrupt_pri_tc.c

/*
 * Copyright (c) 2006-2024, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2024-08-10     RV           the first version
 */

#include <rtthread.h>
#include "utest.h"
#include <interrupt.h>

/**
 * @brief   Setting the Interrupt Priority Test.
 *
 * @note    Without turning off interrupts, interrupts respond in the order in which they are triggered.
 *          With interrupts turned off, low and high priority interrupts are triggered sequentially,
 *          and when interrupts are turned on, high priority interrupts respond first.
 */

#define RES_VAL         0X0
#define SET_VAL         0XA
#define RT_SPI_1        1
#define RT_SPI_2        2
#define RT_SPI_PRI_HIGH 120
#define RT_SPI_PRI_LOW  140

static int mode       = 0;
static int ipi_val[2] = {0, 0};

/* Software Interrupt 1 Service Functions */
static void rt_scheduler_ipi1_handler(int vector, void *param)
{
    ipi_val[0] = SET_VAL;
    if (mode == 0)
    {
        uassert_true(ipi_val[0] > ipi_val[1]);
    }
    else
    {
        ipi_val[0] = RES_VAL;
        ipi_val[1] = RES_VAL;
    }
}

/* Software Interrupt 2 Service Functions */
static void rt_scheduler_ipi2_handler(int vector, void *param)
{
    ipi_val[1] = SET_VAL;
    if (mode == 0)
    {
        ipi_val[0] = RES_VAL;
        ipi_val[1] = RES_VAL;
    }
    else
    {
        uassert_true(ipi_val[0] < ipi_val[1]);
    }
}

/* Interrupt priority testcases 1 */
static void int_pri1_tc(void)
{
    mode = 0;
    unsigned int pri1, pri2;
    pri1 = rt_hw_interrupt_get_priority(RT_SPI_1);
    pri2 = rt_hw_interrupt_get_priority(RT_SPI_2);

    if (pri1 < pri2)
        uassert_true(pri1 < pri2);

    /* Trigger interrupt */
    rt_hw_ipi_send(RT_SPI_1, 0x1);
    rt_hw_ipi_send(RT_SPI_2, 0x1);
    rt_thread_delay(5);
}

/* Interrupt priority testcases 2 */
static void int_pri2_tc(void)
{
    mode = 1;
    unsigned int pri1, pri2;
    pri1 = rt_hw_interrupt_get_priority(RT_SPI_1);
    pri2 = rt_hw_interrupt_get_priority(RT_SPI_2);

    if (pri1 < pri2)
        uassert_true(pri1 < pri2);

    rt_base_t level = rt_hw_local_irq_disable();
    /* Trigger interrupt */
    rt_hw_ipi_send(RT_SPI_1, 0x1);
    rt_hw_ipi_send(RT_SPI_2, 0x1);
    rt_hw_local_irq_enable(level);
    rt_thread_delay(5);
}

static rt_err_t utest_tc_init(void)
{
    /* Setting the priority of software interrupts */
    rt_hw_interrupt_set_priority(RT_SPI_1, RT_SPI_PRI_LOW);
    rt_hw_interrupt_set_priority(RT_SPI_2, RT_SPI_PRI_HIGH);
    /* Register software interrupt service functions */
    rt_hw_ipi_handler_install(RT_SPI_1, rt_scheduler_ipi1_handler);
    rt_hw_ipi_handler_install(RT_SPI_2, rt_scheduler_ipi2_handler);
    return RT_EOK;
}

static rt_err_t utest_tc_cleanup(void)
{
    return RT_EOK;
}

static void testcase(void)
{
    UTEST_UNIT_RUN(int_pri1_tc);
    UTEST_UNIT_RUN(int_pri2_tc);
}
UTEST_TC_EXPORT(testcase, "testcases.smp.interrupt_pri_tc", utest_tc_init, utest_tc_cleanup, 10);