🎨 将初始化8259A的代码移动到driver文件夹

kernel/driver/interrupt/8259A/8259A.c

@@ -0,0 +1,36 @@
+#include "8259A.h"
+#include "../../../common/printk.h"
+#include "../../../common/kprint.h"
+
+extern void (*interrupt_table[24])(void);
+
+void init_8259A()
+{
+    // 初始化中断门， 中断使用第二个ist
+    for(int i=32;i<=55;++i)
+        set_intr_gate(i, 2, interrupt_table[i-32]);
+    kinfo("Initializing 8259A...");
+    
+    // 初始化主芯片
+    io_out8(0x20, 0x11);    // 初始化主芯片的icw1
+    io_out8(0x21, 0x20);    // 设置主芯片的中断向量号为0x20(0x20-0x27)
+    io_out8(0x21, 0x04);    // 设置int2端口级联从芯片
+    io_out8(0x21, 0x01);    // 设置为AEOI模式、FNM、无缓冲
+
+    // 初始化从芯片
+    io_out8(0xa0, 0x11);
+    io_out8(0xa1, 0x28);    // 设置从芯片的中断向量号为0x28(0x28-0x2f)
+    io_out8(0xa1, 0x02);    // 设置从芯片连接到主芯片的int2
+    io_out8(0xa1, 0x01);
+
+
+    // 设置ocw1, 允许所有中断请求
+    io_out8(0x21, 0x00);
+    io_out8(0xa1, 0x00);
+
+    sti();
+
+    kinfo("IRQ circuit 8259A initialized.");
+
+}
+

kernel/driver/interrupt/8259A/8259A.h

@@ -0,0 +1,25 @@
+/**
+ * @file 8259A.h
+ * @author longjin
+ * @brief 8259A中断芯片
+ * @version 0.1
+ * @date 2022-01-29
+ * 
+ * @copyright Copyright (c) 2022
+ * 
+ */
+
+#pragma once
+
+#include "../../../common/glib.h"
+
+#define PIC_EOI		0x20
+#define PIC_master		0x20		/* IO base address for master PIC */
+#define PIC2_slave		0xA0		/* IO base address for slave PIC */
+
+// 初始化8259A芯片的中断服务
+void init_8259A();
+
+
+
+