DragonOS/kernel/driver/keyboard/ps2_keyboard.h
2022-08-31 23:18:36 +08:00

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