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/*
* Copyright (c) 2020-2020, Bluetrum Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020/11/18 greedyhao Bluetrum RISC-V porting code.
*/
#include <rtthread.h>
#include <stdbool.h>
#include <rthw.h>
#include "ab32vgx.h"
uint32_t irq_mask;
void *tbl_irq_vector[IRQ_TOTAL_NUM];
void (*cpu_irq_comm_hook)(void);
void set_cpu_irq_comm(void (*irq_hook)(void))
{
cpu_irq_comm_hook = irq_hook;
}
void cpu_irq_comm_do(void)
{
void (*pfnct)(void);
uint32_t irq_pend = PICPND & irq_mask;
for (int i = 0; i < IRQ_TOTAL_NUM; i++) {
if (irq_pend & BIT(i)) {
pfnct = tbl_irq_vector[i];
if (pfnct) {
pfnct(); /* call ISR */
}
}
}
}
void rt_hw_irq_enable(int vector)
{
if (vector < IRQ_TOTAL_NUM) {
PICEN |= BIT(vector);
}
}
void rt_hw_irq_disable(int vector)
{
if (vector < IRQ_TOTAL_NUM) {
PICEN &= ~BIT(vector);
}
}
void rt_hw_interrupt_init(void)
{
}
/**
* @brief This function will install a interrupt service routine to a interrupt.
*
* @param vector
* @param handler
* @param param
* @param name
* @return rt_isr_handler_t
*/
rt_isr_handler_t rt_hw_interrupt_install(int vector,
rt_isr_handler_t handler,
void *param,
const char *name)
{
rt_isr_handler_t old_handler = RT_NULL;
if (vector < IRQ_TOTAL_NUM) {
uint32_t cpu_ie = PICCON & BIT(0);
PICCON &= ~BIT(0);
old_handler = tbl_irq_vector[vector];
tbl_irq_vector[vector] = handler;
irq_mask |= BIT(vector);
PICCON |= cpu_ie;
PICPR &= ~BIT(vector);
PICEN |= BIT(vector);
}
return old_handler;
}
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