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/**
 43 
/**
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 * i8042 processor driver.
 44 
 * 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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 */
 46 
 */
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 47 
 
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#define i8042_DATA      0x60
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#define i8042_DATA          0x60
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#define i8042_STATUS        0x64
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#define i8042_STATUS            0x64
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#define i8042_BUFFER_FULL_MASK      0x01
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#define i8042_BUFFER_FULL_MASK      0x01
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 - 
 
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/** Keyboard commands. */
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/** Keyboard commands. */
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#define KBD_ENABLE  0xf4
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#define KBD_ENABLE  0xf4
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#define KBD_DISABLE 0xf5
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#define KBD_DISABLE 0xf5
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#define KBD_ACK     0xfa
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#define KBD_ACK     0xfa
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/*
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/*
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 60   Write 8042 Command Byte: next data byte written to port 60h is
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 * 60  Write 8042 Command Byte: next data byte written to port 60h is
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      placed in 8042 command register.Format:
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 *     placed in 8042 command register.Format:
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 *
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     |7|6|5|4|3|2|1|0|8042 Command Byte
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 *    |7|6|5|4|3|2|1|0|8042 Command Byte
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      | | | | | | | `---- 1=enable output register full interrupt
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 *     | | | | | | | `---- 1=enable output register full interrupt
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      | | | | | | `----- should be 0
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 *     | | | | | | `----- should be 0
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      | | | | | `------ 1=set status register system, 0=clear
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 *     | | | | | `------ 1=set status register system, 0=clear
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      | | | | `------- 1=override keyboard inhibit, 0=allow inhibit
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 *     | | | | `------- 1=override keyboard inhibit, 0=allow inhibit
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      | | | `-------- disable keyboard I/O by driving clock line low
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 *     | | | `-------- disable keyboard I/O by driving clock line low
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      | | `--------- disable auxiliary device, drives clock line low
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 *     | | `--------- disable auxiliary device, drives clock line low
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      | `---------- IBM scancode translation 0=AT, 1=PC/XT
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 *     | `---------- IBM scancode translation 0=AT, 1=PC/XT
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      `----------- reserved, should be 0
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 *     `----------- reserved, should be 0
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*/
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 */
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 - 
 
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#define i8042_SET_COMMAND 0x60
 - 
 
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#define i8042_COMMAND 0x49
 - 
 
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#define i8042_WAIT_MASK 0x02
 - 
 
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- 
 
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#define i8042_SET_COMMAND   0x60
- 
 
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#define i8042_COMMAND       0x49
- 
 
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#define i8042_WAIT_MASK     0x02
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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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#define PRESSED_CAPSLOCK    (1<<1)
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#define PRESSED_CAPSLOCK    (1<<1)
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#define LOCKED_CAPSLOCK     (1<<0)
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#define LOCKED_CAPSLOCK     (1<<0)
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#define ACTIVE_READ_BUFF_SIZE 16 /*Must be power of 2*/
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#define ACTIVE_READ_BUFF_SIZE 16 /*Must be power of 2*/
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 - 
 
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__u8 active_read_buff[ACTIVE_READ_BUFF_SIZE]={0};
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__u8 active_read_buff[ACTIVE_READ_BUFF_SIZE]={0};
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SPINLOCK_INITIALIZE(keylock);       /**< keylock protects keyflags and lockflags. */
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SPINLOCK_INITIALIZE(keylock);       /**< keylock protects keyflags and lockflags. */
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static volatile int keyflags;       /**< Tracking of multiple keypresses. */
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static volatile int keyflags;       /**< Tracking of multiple keypresses. */
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static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
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static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
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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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    exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);
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    exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);
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    while (inb(i8042_STATUS)&i8042_WAIT_MASK);     /*Wait*/
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    while (inb(i8042_STATUS)&i8042_WAIT_MASK) {
- 
 
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        /* wait */
- 
 
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    }
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    outb(i8042_STATUS,i8042_SET_COMMAND);
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    outb(i8042_STATUS,i8042_SET_COMMAND);
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    while (inb(i8042_STATUS)&i8042_WAIT_MASK);     /*Wait*/
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    while (inb(i8042_STATUS)&i8042_WAIT_MASK) {
- 
 
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        /* wait */
- 
 
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    }
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    outb(i8042_DATA,i8042_COMMAND);
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    outb(i8042_DATA,i8042_COMMAND);
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    trap_virtual_enable_irqs(1<<IRQ_KBD);
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    trap_virtual_enable_irqs(1<<IRQ_KBD);
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    chardev_initialize("i8042_kbd", &kbrd, &ops);
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    chardev_initialize("i8042_kbd", &kbrd, &ops);
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    stdin = &kbrd;
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    stdin = &kbrd;
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/* Called from getc(). */
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/* Called from getc(). */
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void i8042_suspend(chardev_t *d)
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void i8042_suspend(chardev_t *d)
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{
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{
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}
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}
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 - 
 
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static __u8 active_read_buff_read(void)
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static __u8 active_read_buff_read(void)
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{
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{
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    static int i=0;
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    static int i=0;
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    i&=(ACTIVE_READ_BUFF_SIZE-1);
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    i&=(ACTIVE_READ_BUFF_SIZE-1);
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    if(!active_read_buff[i])
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    if(!active_read_buff[i])
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    i&=(ACTIVE_READ_BUFF_SIZE-1);
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    i&=(ACTIVE_READ_BUFF_SIZE-1);
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    active_read_buff[i]=0;
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    active_read_buff[i]=0;
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}
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}
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static void active_readed_key_pressed(__u8 sc)
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static void active_read_key_pressed(__u8 sc)
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{
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{
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    char *map = sc_primary_map;
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    char *map = sc_primary_map;
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    char ascii = sc_primary_map[sc];
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    char ascii = sc_primary_map[sc];
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    bool shift, capslock;
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    bool shift, capslock;
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    bool letter = false;
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    bool letter = false;
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    }
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    }
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    /*spinlock_unlock(&keylock);*/
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    /*spinlock_unlock(&keylock);*/
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}
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}
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 - 
 
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static char key_read(chardev_t *d)
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static char key_read(chardev_t *d)
501 
{
 500 
{
502 
    char ch;   
 501 
    char ch;   
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 - 
 
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 502 
 
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    while(!(ch=active_read_buff_read()))
 503 
    while(!(ch=active_read_buff_read()))
506 
    {
 504 
    {
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        __u8 x;
 505 
        __u8 x;
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        while (!((x=inb(i8042_STATUS))&i8042_BUFFER_FULL_MASK));
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        while (!((x=inb(i8042_STATUS))&i8042_BUFFER_FULL_MASK));
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        x = inb(i8042_DATA);
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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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            active_readed_key_pressed(x);
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            active_read_key_pressed(x);
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    }
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    }
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    return ch;
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    return ch;
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}
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}
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 - 
 
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 -