Function rt_pic_handle_isr

components/drivers/pic/pic.c:541–631

}

rt_err_t rt_pic_handle_isr(struct rt_pic_irq *pirq)
{
    rt_err_t err = -RT_EEMPTY;
    rt_list_t *handler_nodes;
    struct rt_irq_desc *action;
#ifdef RT_USING_PIC_STATISTICS
    struct timespec ts;
    rt_ubase_t irq_time_ns;
    rt_ubase_t current_irq_begin;
#endif

    RT_ASSERT(pirq != RT_NULL);
    RT_ASSERT(pirq->pic != RT_NULL);

#ifdef RT_USING_PIC_STATISTICS
    rt_ktime_boottime_get_ns(&ts);
    current_irq_begin = ts.tv_sec * (1000UL * 1000 * 1000) + ts.tv_nsec;
#endif

    handler_nodes = &pirq->isr.list;
    action = &pirq->isr.action;

    if (!rt_list_isempty(&pirq->children_nodes))
    {
        struct rt_pic_irq *child;

        rt_list_for_each_entry(child, &pirq->children_nodes, list)
        {
            if (child->pic->ops->irq_ack)
            {
                child->pic->ops->irq_ack(child);
            }

            err = rt_pic_handle_isr(child);

            if (child->pic->ops->irq_eoi)
            {
                child->pic->ops->irq_eoi(child);
            }
        }
    }

    if (action->handler)
    {
        action->handler(pirq->irq, action->param);
    #ifdef RT_USING_INTERRUPT_INFO
        action->counter++;
    #ifdef RT_USING_SMP
        action->cpu_counter[rt_hw_cpu_id()]++;
    #endif
    #endif

        if (!rt_list_isempty(handler_nodes))
        {
            struct rt_pic_isr *isr;

            rt_list_for_each_entry(isr, handler_nodes, list)
            {