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61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
#pragma once
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#include <common/glib.h>
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#define PS2_KEYBOARD_INTR_VECTOR 0x21 // 键盘的中断向量号
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// 定义键盘循环队列缓冲区大小为100bytes
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#define ps2_keyboard_buffer_size 8
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#define KEYBOARD_CMD_RESET_BUFFER 1
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#define PORT_PS2_KEYBOARD_DATA 0x60
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#define PORT_PS2_KEYBOARD_STATUS 0x64
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#define PORT_PS2_KEYBOARD_CONTROL 0x64
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#define PS2_KEYBOARD_COMMAND_WRITE 0x60 // 向键盘发送配置命令
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#define PS2_KEYBOARD_COMMAND_READ 0x20 // 读取键盘的配置值
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#define PS2_KEYBOARD_PARAM_INIT 0x47 // 初始化键盘控制器的配置值
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// ========= 检测键盘控制器输入/输出缓冲区是否已满
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#define PS2_KEYBOARD_FLAG_OUTBUF_FULL 0x01 // 键盘的输出缓冲区已满标志位
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#define PS2_KEYBOARD_FLAG_INBUF_FULL 0x02 // 键盘的输入缓冲区已满标志位
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// 等待向键盘控制器写入信息完成
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// todo: bugfix:在不包含ps2键盘控制器的机器上，这里会卡死
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#define wait_ps2_keyboard_write() while (io_in8(PORT_PS2_KEYBOARD_STATUS) & PS2_KEYBOARD_FLAG_INBUF_FULL)
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// #define wait_ps2_keyboard_write() (1)
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// 等待从键盘控制器读取信息完成
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#define wait_ps2_keyboard_read() while (io_in8(PORT_PS2_KEYBOARD_STATUS) & PS2_KEYBOARD_FLAG_OUTBUF_FULL)
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// #define wait_ps2_keyboard_read() (1)
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extern struct vfs_file_operations_t ps2_keyboard_fops;
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/**
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* @brief 初始化键盘驱动程序的函数
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*
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*/
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void ps2_keyboard_init();
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/**
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* @brief 键盘驱动卸载函数
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*
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*/
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void ps2_keyboard_exit();
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/**
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* @brief 解析键盘扫描码
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*
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*/
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void ps2_keyboard_analyze_keycode();
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/**
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* @brief 从缓冲队列中获取键盘扫描码
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* @return 键盘扫描码
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* 若缓冲队列为空则返回-1
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*/
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int ps2_keyboard_get_scancode(); |