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🆕 中断上半部

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This commit is contained in:
fslongjin
2022-03-15 18:41:58 +08:00
parent c187ef152a
commit d4c07ac4ad
5 changed files with 404 additions and 8 deletions
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51
kernel/exception/irq.c
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@ -111,6 +111,55 @@ void (*interrupt_table[24])(void) =
IRQ0x37interrupt,
};
/**
* @brief 中断注册函数
*
* @param irq_num 中断向量号
* @param arg 传递给中断安装接口的参数
* @param handler 中断处理函数
* @param paramater 中断处理函数的参数
* @param controller 中断控制器结构
* @param irq_name 中断名
* @return int
*/
int irq_register(ul irq_num, void *arg, void (*handler)(ul irq_num, ul parameter, struct pt_regs *regs), ul paramater, hardware_int_controller *controller, char *irq_name)
{
// 由于为I/O APIC分配的中断向量号是从32开始的，因此要减去32才是对应的interrupt_desc的元素
irq_desc_t *p = &interrupt_desc[irq_num - 32];
p->controller = controller;
p->irq_name = irq_name;
p->parameter = paramater;
p->flags = 0;
p->handler = handler;
p->controller->install(irq_num, arg);
p->controller->enable(irq_num);
return 0;
}
/**
* @brief 中断注销函数
*
* @param irq_num 中断向量号
* @return int
*/
int irq_unregister(ul irq_num)
{
irq_desc_t *p = &interrupt_desc[irq_num - 32];
p->controller->disable(irq_num);
p->controller->uninstall(irq_num);
p->controller = NULL;
p->irq_name = NULL;
p->parameter = NULL;
p->flags = 0;
p->handler = NULL;
return 0;
}
/**
* @brief 初始化中断模块
*/
@ -119,6 +168,8 @@ void irq_init()
#if _INTR_8259A_
init_8259A();
#else
memset(interrupt_desc, 0, sizeof(irq_desc_t) * IRQ_NUM);
apic_init();
#endif
}