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/**
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/**
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 * i8042 processor driver.
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 * i8042 processor driver.
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 * It takes care of low-level keyboard functions.
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 * It takes care of low-level keyboard functions.
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 */
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 */
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- 
 
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#define i8042_DATA      0x60
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#define i8042_STATUS        0x64
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/** Keyboard commands. */
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#define KBD_ENABLE  0xf4
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#define KBD_DISABLE 0xf5
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#define KBD_ACK     0xfa
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#define SPECIAL     '?'
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#define SPECIAL     '?'
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#define KEY_RELEASE 0x80
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#define KEY_RELEASE 0x80
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static void key_released(__u8 sc);
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static void key_released(__u8 sc);
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static void key_pressed(__u8 sc);
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static void key_pressed(__u8 sc);
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/** Initialize i8042. */
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/** Initialize i8042. */
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void i8042_init(void)
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void i8042_init(void)
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{
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{
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    trap_register(VECTOR_KBD, i8042_interrupt);
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    trap_register(VECTOR_KBD, i8042_interrupt);
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    trap_virtual_enable_irqs(1<<IRQ_KBD);
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    spinlock_initialize(&keylock);
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    spinlock_initialize(&keylock);
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    chardev_initialize(&kbrd, &ops);
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    chardev_initialize(&kbrd, &ops);
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    stdin = &kbrd;
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    stdin = &kbrd;
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}
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}
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void i8042_interrupt(__u8 n, __native stack[])
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void i8042_interrupt(__u8 n, __native stack[])
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{
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{
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    __u8 x;
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    __u8 x;
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    trap_virtual_eoi();
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    trap_virtual_eoi();
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    x = inb(0x60);
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    x = inb(i8042_DATA);
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    if (x & KEY_RELEASE)
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    if (x & KEY_RELEASE)
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        key_released(x ^ KEY_RELEASE);
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        key_released(x ^ KEY_RELEASE);
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    else
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    else
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        key_pressed(x);
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        key_pressed(x);
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}
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}