97 lines
1.7 KiB
C
Executable File
97 lines
1.7 KiB
C
Executable File
/**
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* @file irq.c
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* @author zhangzheng (1358745329@qq.com)
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* @brief
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* @version 0.1
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* @date 2023-09-29
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*
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* @copyright Copyright (c) 2023
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*
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*/
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#include <arch.h>
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#include <types.h>
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#include <kobject.h>
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#include <thread.h>
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#include <ref.h>
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#include <init.h>
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#include <mm_wrap.h>
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#include <factory.h>
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#include <irq.h>
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#include <printk.h>
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/*TODO:换成更节省内存的方式*/
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static irq_entry_t irqs[IRQ_REG_TAB_SIZE] = {0};
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static void irq_tigger(irq_entry_t *irq);
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/**
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* @brief 检查指定的irq号是否可用
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*
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* @param inx
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* @return bool_t
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*/
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bool_t irq_check_usability(int inx)
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{
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if (inx >= IRQ_REG_TAB_SIZE)
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{
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return FALSE;
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}
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return irqs[inx].irq_tigger_func == NULL;
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}
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/**
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* @brief 分配一个可用的irq
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*
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* @param inx
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* @param irq
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* @param irq_tigger_func
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* @return bool_t
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*/
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bool_t irq_alloc(int inx, irq_sender_t *irq, void (*irq_tigger_func)(irq_entry_t *irq))
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{
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if (irqs[inx].irq_tigger_func != NULL)
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{
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return FALSE;
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}
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irqs[inx].irq = irq;
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irqs[inx].irq_tigger_func = irq_tigger_func;
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return TRUE;
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}
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/**
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* @brief 释放一个irq
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*
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* @param inx
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*/
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void irq_free(int inx)
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{
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assert(inx < IRQ_REG_TAB_SIZE);
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irqs[inx].irq_tigger_func = NULL;
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}
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/**
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* @brief 获取一个irq
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*
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* @param inx
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* @return irq_entry_t*
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*/
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irq_entry_t *irq_get(int inx)
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{
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assert(inx < IRQ_REG_TAB_SIZE);
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return &irqs[inx];
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}
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/**
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* @brief 中断的入口函数
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*
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*/
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void entry_handler(void)
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{
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umword_t isr_no = arch_get_isr_no();
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isr_no -= USER_ISR_START_NO; //!< 系统用的irq偏移
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// printk("%d.\n", isr_no);
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if (!irq_check_usability(isr_no))
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{
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if (irqs[isr_no].irq_tigger_func)
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{
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irqs[isr_no].irq_tigger_func(&irqs[isr_no]);
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}
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}
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}
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