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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| /* 键盘控制代码 */ | ||
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| #include "bootpack.h" | ||
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| struct FIFO8 keyfifo; | ||
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| void inthandler21(int *esp) { | ||
| /* 来自PS/2键盘的中断 */ | ||
| struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO; | ||
| unsigned char data, s[4]; | ||
| io_out8(PIC0_OCW2, 0x61); /* 通知PIC IRQ-01 已经受理完毕 */ | ||
| data = io_in8(PORT_KEYDAT); | ||
| fifo8_put(&keyfifo, data); | ||
| return; | ||
| } | ||
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| #define PORT_KEYSTA 0x0064 | ||
| #define KEYSTA_SEND_NOTREADY 0x02 | ||
| #define KEYCMD_WRITE_MODE 0x60 | ||
| #define KBC_MODE 0x47 | ||
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| void wait_KBC_sendready(void) { | ||
| /* 等待键盘控制电路准备完毕 */ | ||
| for (;;) { | ||
| if ((io_in8(PORT_KEYSTA) & KEYSTA_SEND_NOTREADY) == 0) { | ||
| break; | ||
| } | ||
| } | ||
| return; | ||
| } | ||
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| void init_keyboard(void) { | ||
| /* 初始化键盘控制电路 */ | ||
| wait_KBC_sendready(); | ||
| io_out8(PORT_KEYCMD, KEYCMD_WRITE_MODE); | ||
| wait_KBC_sendready(); | ||
| io_out8(PORT_KEYDAT, KBC_MODE); | ||
| return; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| /* 鼠标控制代码 */ | ||
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| #include "bootpack.h" | ||
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| struct FIFO8 mousefifo; | ||
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| void inthandler2c(int *esp) { | ||
| /* 来自PS/2鼠标的中断 */ | ||
| unsigned char data; | ||
| io_out8(PIC1_OCW2, 0x64); /* 通知PIC IRQ-12 已经受理完毕 */ | ||
| io_out8(PIC0_OCW2, 0x62); /* 通知PIC IRQ-02 已经受理完毕 */ | ||
| data = io_in8(PORT_KEYDAT); | ||
| fifo8_put(&mousefifo, data); | ||
| return; | ||
| } | ||
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| #define KEYCMD_SENDTO_MOUSE 0xd4 | ||
| #define MOUSECMD_ENABLE 0xf4 | ||
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| void enable_mouse(struct MOUSE_DEC *mdec) { | ||
| /* 鼠标有效 */ | ||
| wait_KBC_sendready(); | ||
| io_out8(PORT_KEYCMD, KEYCMD_SENDTO_MOUSE); | ||
| wait_KBC_sendready(); | ||
| io_out8(PORT_KEYDAT, MOUSECMD_ENABLE); | ||
| /* 顺利的话，ACK(0xfa)会被送过来 */ | ||
| mdec->phase = 0; /* 等待0xfa的阶段 */ | ||
| return; | ||
| } | ||
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| int mouse_decode(struct MOUSE_DEC *mdec, unsigned char dat) { | ||
| if (mdec->phase == 0) { | ||
| /* 等待鼠标的0xfa的阶段 */ | ||
| if (dat == 0xfa) { | ||
| mdec->phase = 1; | ||
| } | ||
| return 0; | ||
| } | ||
| if (mdec->phase == 1) { | ||
| /* 等待鼠标第一字节的阶段 */ | ||
| mdec->buf[0] = dat; | ||
| mdec->phase = 2; | ||
| return 0; | ||
| } | ||
| if (mdec->phase == 2) { | ||
| /* 等待鼠标第二字节的阶段 */ | ||
| mdec->buf[1] = dat; | ||
| mdec->phase = 3; | ||
| return 0; | ||
| } | ||
| if (mdec->phase == 3) { | ||
| /* 等待鼠标第二字节的阶段 */ | ||
| mdec->buf[2] = dat; | ||
| mdec->phase = 1; | ||
| mdec->btn = mdec->buf[0] & 0x07; | ||
| mdec->x = mdec->buf[1]; | ||
| mdec->y = mdec->buf[2]; | ||
| if ((mdec->buf[0] & 0x10) != 0) { | ||
| mdec->x |= 0xffffff00; | ||
| } | ||
| if ((mdec->buf[0] & 0x20) != 0) { | ||
| mdec->y |= 0xffffff00; | ||
| } | ||
| /* 鼠标的y方向与画面符号相反 */ | ||
| mdec->y = - mdec->y; | ||
| return 1; | ||
| } | ||
| /* 应该不可能到这里来 */ | ||
| return -1; | ||
| } |