72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
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/*
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* Copyright (c) 2006-2018, 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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* 2020/11/18 greedyhao Bluetrum RISC-V porting code.
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*/
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#include <rtthread.h>
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#include <stdbool.h>
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#include <rthw.h>
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#include "ab32vgx.h"
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uint32_t irq_mask AT(.bss.irq_tbl);
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void *tbl_irq_vector[IRQ_TOTAL_NUM] AT(.bss.irq_tbl);
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void (*cpu_irq_comm_hook)(void);
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void set_cpu_irq_comm(void (*irq_hook)(void))
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{
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cpu_irq_comm_hook = irq_hook;
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}
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AT(.com_text.irq)
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void cpu_irq_comm_do(void)
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{
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void (*pfnct)(void);
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uint32_t irq_pend = PICPND & irq_mask;
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for (int i = 0; i < IRQ_TOTAL_NUM; i++) {
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if (irq_pend & BIT(i)) {
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pfnct = tbl_irq_vector[i];
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if (pfnct) {
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pfnct(); /* call ISR */
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}
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}
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}
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}
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void rt_hw_interrupt_init(void)
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{
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}
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/**
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* @brief This function will install a interrupt service routine to a interrupt.
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*
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* @param vector
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* @param handler
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* @param param
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* @param name
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* @return rt_isr_handler_t
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*/
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rt_isr_handler_t rt_hw_interrupt_install(int vector,
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rt_isr_handler_t handler,
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void *param,
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const char *name)
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{
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rt_isr_handler_t old_handler = RT_NULL;
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if (vector < IRQ_TOTAL_NUM) {
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uint32_t cpu_ie = PICCON&BIT(0);
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PICCON &= ~BIT(0);
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old_handler = tbl_irq_vector[vector];
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tbl_irq_vector[vector] = handler;
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irq_mask |= BIT(vector);
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PICCON |= cpu_ie;
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PICPR &= ~BIT(vector);
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PICEN |= BIT(vector);
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}
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return old_handler;
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}
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