WebSVN – HelenOS-historic – Diff – /kernel/trunk/genarch/src/i8042/i8042.c


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <arch/i8042.h>
#include <arch/i8259.h>
#include <arch/interrupt.h>
#include <cpu.h>
#include <arch/asm.h>
#include <arch.h>
#include <print.h>
#include <synch/spinlock.h>
#include <typedefs.h>
#include <console/chardev.h>
#include <console/console.h>
#include <macros.h>
#include <interrupt.h>
 
/**
 * i8042 processor driver.
 * It takes care of low-level keyboard functions.
 */
 
#define i8042_DATA          0x60
#define i8042_STATUS            0x64
#define i8042_BUFFER_FULL_MASK      0x01
 
 
/** Keyboard commands. */
#define KBD_ENABLE  0xf4
#define KBD_DISABLE 0xf5
#define KBD_ACK     0xfa
 
/*
 * 60  Write 8042 Command Byte: next data byte written to port 60h is
 *     placed in 8042 command register.Format:
 *
 *    |7|6|5|4|3|2|1|0|8042 Command Byte
 *     | | | | | | | `---- 1=enable output register full interrupt
 *     | | | | | | `----- should be 0
 *     | | | | | `------ 1=set status register system, 0=clear
 *     | | | | `------- 1=override keyboard inhibit, 0=allow inhibit
 *     | | | `-------- disable keyboard I/O by driving clock line low
 *     | | `--------- disable auxiliary device, drives clock line low
 *     | `---------- IBM scancode translation 0=AT, 1=PC/XT
 *     `----------- reserved, should be 0
 */
 
 
 
 
 
#define i8042_SET_COMMAND   0x60
#define i8042_COMMAND       0x49
#define i8042_WAIT_MASK     0x02
 
#define SPECIAL     '?'
#define KEY_RELEASE 0x80
 
static void key_released(__u8 sc);
static void key_pressed(__u8 sc);
static char key_read(chardev_t *d);
 
#define PRESSED_SHIFT       (1<<0)
#define PRESSED_CAPSLOCK    (1<<1)
#define LOCKED_CAPSLOCK     (1<<0)
 
#define ACTIVE_READ_BUFF_SIZE 16 /*Must be power of 2*/
 
 
__u8 active_read_buff[ACTIVE_READ_BUFF_SIZE]={0};
 
SPINLOCK_INITIALIZE(keylock);       /**< keylock protects keyflags and lockflags. */
static volatile int keyflags;       /**< Tracking of multiple keypresses. */
static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
 
static void i8042_suspend(chardev_t *);
static void i8042_resume(chardev_t *);
 
static chardev_t kbrd;
static chardev_operations_t ops = {
    .suspend = i8042_suspend,
    .resume = i8042_resume,
    .read = key_read
};
 
/** Primary meaning of scancodes. */
static char sc_primary_map[] = {
    SPECIAL, /* 0x00 */
    SPECIAL, /* 0x01 - Esc */
    '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
    '\b', /* 0x0e - Backspace */
    '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
    SPECIAL, /* 0x1d - LCtrl */
    'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
    '`',
    SPECIAL, /* 0x2a - LShift */
    '\\',
    'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
    SPECIAL, /* 0x36 - RShift */
    '*',
    SPECIAL, /* 0x38 - LAlt */
    ' ',
    SPECIAL, /* 0x3a - CapsLock */
    SPECIAL, /* 0x3b - F1 */
    SPECIAL, /* 0x3c - F2 */
    SPECIAL, /* 0x3d - F3 */
    SPECIAL, /* 0x3e - F4 */
    SPECIAL, /* 0x3f - F5 */
    SPECIAL, /* 0x40 - F6 */
    SPECIAL, /* 0x41 - F7 */
    SPECIAL, /* 0x42 - F8 */
    SPECIAL, /* 0x43 - F9 */
    SPECIAL, /* 0x44 - F10 */
    SPECIAL, /* 0x45 - NumLock */
    SPECIAL, /* 0x46 - ScrollLock */
    '7', '8', '9', '-',
    '4', '5', '6', '+',
    '1', '2', '3',
    '0', '.',
    SPECIAL, /* 0x54 - Alt-SysRq */
    SPECIAL, /* 0x55 - F11/F12/PF1/FN */
    SPECIAL, /* 0x56 - unlabelled key next to LAlt */
    SPECIAL, /* 0x57 - F11 */
    SPECIAL, /* 0x58 - F12 */
    SPECIAL, /* 0x59 */
    SPECIAL, /* 0x5a */
    SPECIAL, /* 0x5b */
    SPECIAL, /* 0x5c */
    SPECIAL, /* 0x5d */
    SPECIAL, /* 0x5e */
    SPECIAL, /* 0x5f */
    SPECIAL, /* 0x60 */
    SPECIAL, /* 0x61 */
    SPECIAL, /* 0x62 */
    SPECIAL, /* 0x63 */
    SPECIAL, /* 0x64 */
    SPECIAL, /* 0x65 */
    SPECIAL, /* 0x66 */
    SPECIAL, /* 0x67 */
    SPECIAL, /* 0x68 */
    SPECIAL, /* 0x69 */
    SPECIAL, /* 0x6a */
    SPECIAL, /* 0x6b */
    SPECIAL, /* 0x6c */
    SPECIAL, /* 0x6d */
    SPECIAL, /* 0x6e */
    SPECIAL, /* 0x6f */
    SPECIAL, /* 0x70 */
    SPECIAL, /* 0x71 */
    SPECIAL, /* 0x72 */
    SPECIAL, /* 0x73 */
    SPECIAL, /* 0x74 */
    SPECIAL, /* 0x75 */
    SPECIAL, /* 0x76 */
    SPECIAL, /* 0x77 */
    SPECIAL, /* 0x78 */
    SPECIAL, /* 0x79 */
    SPECIAL, /* 0x7a */
    SPECIAL, /* 0x7b */
    SPECIAL, /* 0x7c */
    SPECIAL, /* 0x7d */
    SPECIAL, /* 0x7e */
    SPECIAL, /* 0x7f */
};
 
/** Secondary meaning of scancodes. */
static char sc_secondary_map[] = {
    SPECIAL, /* 0x00 */
    SPECIAL, /* 0x01 - Esc */
    '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
    SPECIAL, /* 0x0e - Backspace */
    '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
    SPECIAL, /* 0x1d - LCtrl */
    'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
    '~',
    SPECIAL, /* 0x2a - LShift */
    '|',
    'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
    SPECIAL, /* 0x36 - RShift */
    '*',
    SPECIAL, /* 0x38 - LAlt */
    ' ',
    SPECIAL, /* 0x3a - CapsLock */
    SPECIAL, /* 0x3b - F1 */
    SPECIAL, /* 0x3c - F2 */
    SPECIAL, /* 0x3d - F3 */
    SPECIAL, /* 0x3e - F4 */
    SPECIAL, /* 0x3f - F5 */
    SPECIAL, /* 0x40 - F6 */
    SPECIAL, /* 0x41 - F7 */
    SPECIAL, /* 0x42 - F8 */
    SPECIAL, /* 0x43 - F9 */
    SPECIAL, /* 0x44 - F10 */
    SPECIAL, /* 0x45 - NumLock */
    SPECIAL, /* 0x46 - ScrollLock */
    '7', '8', '9', '-',
    '4', '5', '6', '+',
    '1', '2', '3',
    '0', '.',
    SPECIAL, /* 0x54 - Alt-SysRq */
    SPECIAL, /* 0x55 - F11/F12/PF1/FN */
    SPECIAL, /* 0x56 - unlabelled key next to LAlt */
    SPECIAL, /* 0x57 - F11 */
    SPECIAL, /* 0x58 - F12 */
    SPECIAL, /* 0x59 */
    SPECIAL, /* 0x5a */
    SPECIAL, /* 0x5b */
    SPECIAL, /* 0x5c */
    SPECIAL, /* 0x5d */
    SPECIAL, /* 0x5e */
    SPECIAL, /* 0x5f */
    SPECIAL, /* 0x60 */
    SPECIAL, /* 0x61 */
    SPECIAL, /* 0x62 */
    SPECIAL, /* 0x63 */
    SPECIAL, /* 0x64 */
    SPECIAL, /* 0x65 */
    SPECIAL, /* 0x66 */
    SPECIAL, /* 0x67 */
    SPECIAL, /* 0x68 */
    SPECIAL, /* 0x69 */
    SPECIAL, /* 0x6a */
    SPECIAL, /* 0x6b */
    SPECIAL, /* 0x6c */
    SPECIAL, /* 0x6d */
    SPECIAL, /* 0x6e */
    SPECIAL, /* 0x6f */
    SPECIAL, /* 0x70 */
    SPECIAL, /* 0x71 */
    SPECIAL, /* 0x72 */
    SPECIAL, /* 0x73 */
    SPECIAL, /* 0x74 */
    SPECIAL, /* 0x75 */
    SPECIAL, /* 0x76 */
    SPECIAL, /* 0x77 */
    SPECIAL, /* 0x78 */
    SPECIAL, /* 0x79 */
    SPECIAL, /* 0x7a */
    SPECIAL, /* 0x7b */
    SPECIAL, /* 0x7c */
    SPECIAL, /* 0x7d */
    SPECIAL, /* 0x7e */
    SPECIAL, /* 0x7f */
};
 
static void i8042_interrupt(int n, void *stack);
 
/** Initialize i8042. */
void i8042_init(void)
{
    exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);
    while (inb(i8042_STATUS)&i8042_WAIT_MASK) {
        /* wait */
    }
    outb(i8042_STATUS,i8042_SET_COMMAND);
    while (inb(i8042_STATUS)&i8042_WAIT_MASK) {
        /* wait */
    }
    outb(i8042_DATA,i8042_COMMAND);
 
    trap_virtual_enable_irqs(1<<IRQ_KBD);
    chardev_initialize("i8042_kbd", &kbrd, &ops);
    stdin = &kbrd;
}
 
/** Process i8042 interrupt.
 *
 * @param n Interrupt vector.
 * @param stack Interrupted stack.
 */
void i8042_interrupt(int n, void *stack)
{
    __u8 x;
 
    trap_virtual_eoi();
    x = inb(i8042_DATA);
    if (x & KEY_RELEASE)
        key_released(x ^ KEY_RELEASE);
    else
        key_pressed(x);
}
 
/** Process release of key.
 *
 * @param sc Scancode of the key being released.
 */
void key_released(__u8 sc)
{
    spinlock_lock(&keylock);
    switch (sc) {
        case SC_LSHIFT:
        case SC_RSHIFT:
        keyflags &= ~PRESSED_SHIFT;
        break;
        case SC_CAPSLOCK:
        keyflags &= ~PRESSED_CAPSLOCK;
        if (lockflags & LOCKED_CAPSLOCK)
            lockflags &= ~LOCKED_CAPSLOCK;
        else
            lockflags |= LOCKED_CAPSLOCK;
        break;
        default:
        break;
    }
    spinlock_unlock(&keylock);
}
 
/** Process keypress.
 *
 * @param sc Scancode of the key being pressed.
 */
void key_pressed(__u8 sc)
{
    char *map = sc_primary_map;
    char ascii = sc_primary_map[sc];
    bool shift, capslock;
    bool letter = false;
 
    spinlock_lock(&keylock);
    switch (sc) {
    case SC_LSHIFT:
    case SC_RSHIFT:
            keyflags |= PRESSED_SHIFT;
        break;
    case SC_CAPSLOCK:
        keyflags |= PRESSED_CAPSLOCK;
        break;
    case SC_SPEC_ESCAPE:
        break;
    case SC_LEFTARR:
        chardev_push_character(&kbrd, 0x1b);
        chardev_push_character(&kbrd, 0x5b);
        chardev_push_character(&kbrd, 0x44);
        break;
    case SC_RIGHTARR:
        chardev_push_character(&kbrd, 0x1b);
        chardev_push_character(&kbrd, 0x5b);
        chardev_push_character(&kbrd, 0x43);
        break;
    case SC_UPARR:
        chardev_push_character(&kbrd, 0x1b);
        chardev_push_character(&kbrd, 0x5b);
        chardev_push_character(&kbrd, 0x41);
        break;
    case SC_DOWNARR:
        chardev_push_character(&kbrd, 0x1b);
        chardev_push_character(&kbrd, 0x5b);
        chardev_push_character(&kbrd, 0x42);
        break;
    case SC_HOME:
        chardev_push_character(&kbrd, 0x1b);
        chardev_push_character(&kbrd, 0x4f);
        chardev_push_character(&kbrd, 0x48);
        break;
    case SC_END:
        chardev_push_character(&kbrd, 0x1b);
        chardev_push_character(&kbrd, 0x4f);
        chardev_push_character(&kbrd, 0x46);
        break;
    case SC_DELETE:
        chardev_push_character(&kbrd, 0x1b);
        chardev_push_character(&kbrd, 0x5b);
        chardev_push_character(&kbrd, 0x33);
        chardev_push_character(&kbrd, 0x7e);
        break;
    default:
            letter = is_lower(ascii);
        capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
        shift = keyflags & PRESSED_SHIFT;
        if (letter && capslock)
            shift = !shift;
        if (shift)
            map = sc_secondary_map;
        chardev_push_character(&kbrd, map[sc]);
        break;
    }
    spinlock_unlock(&keylock);
}
 
/* Called from getc(). */
void i8042_resume(chardev_t *d)
{
}
 
/* Called from getc(). */
void i8042_suspend(chardev_t *d)
{
}
 
 
static __u8 active_read_buff_read(void)
{
    static int i=0;
    i&=(ACTIVE_READ_BUFF_SIZE-1);
    if(!active_read_buff[i])
    {
        return 0;
    }
    return active_read_buff[i++];
}
 
static void active_read_buff_write(__u8 ch)
{
    static int i=0;
    active_read_buff[i]=ch;
    i++;
    i&=(ACTIVE_READ_BUFF_SIZE-1);
    active_read_buff[i]=0;
}
 
 
static void active_read_key_pressed(__u8 sc)
{
    char *map = sc_primary_map;
    char ascii = sc_primary_map[sc];
    bool shift, capslock;
    bool letter = false;
 
    /*spinlock_lock(&keylock);*/
    switch (sc) {
    case SC_LSHIFT:
    case SC_RSHIFT:
            keyflags |= PRESSED_SHIFT;
        break;
    case SC_CAPSLOCK:
        keyflags |= PRESSED_CAPSLOCK;
        break;
    case SC_SPEC_ESCAPE:
        break;
    case SC_LEFTARR:
        active_read_buff_write(0x1b);
        active_read_buff_write(0x5b);
        active_read_buff_write(0x44);
        break;
    case SC_RIGHTARR:
        active_read_buff_write(0x1b);
        active_read_buff_write(0x5b);
        active_read_buff_write(0x43);
        break;
    case SC_UPARR:
        active_read_buff_write(0x1b);
        active_read_buff_write(0x5b);
        active_read_buff_write(0x41);
        break;
    case SC_DOWNARR:
        active_read_buff_write(0x1b);
        active_read_buff_write(0x5b);
        active_read_buff_write(0x42);
        break;
    case SC_HOME:
        active_read_buff_write(0x1b);
        active_read_buff_write(0x4f);
        active_read_buff_write(0x48);
        break;
    case SC_END:
        active_read_buff_write(0x1b);
        active_read_buff_write(0x4f);
        active_read_buff_write(0x46);
        break;
    case SC_DELETE:
        active_read_buff_write(0x1b);
        active_read_buff_write(0x5b);
        active_read_buff_write(0x33);
        active_read_buff_write(0x7e);
        break;
    default:
            letter = is_lower(ascii);
        capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
        shift = keyflags & PRESSED_SHIFT;
        if (letter && capslock)
            shift = !shift;
        if (shift)
            map = sc_secondary_map;
        active_read_buff_write(map[sc]);
        break;
    }
    /*spinlock_unlock(&keylock);*/
 
}
 
 
static char key_read(chardev_t *d)
{
    char ch;   
 
 
    while(!(ch=active_read_buff_read()))
    {
        __u8 x;
        while (!((x=inb(i8042_STATUS))&i8042_BUFFER_FULL_MASK));
        x = inb(i8042_DATA);
        if (x & KEY_RELEASE)
            key_released(x ^ KEY_RELEASE);
        else
            active_read_key_pressed(x);
    }
    return ch;
}
 
 
 

Rev 878	Rev 893
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <arch/i8042.h>	29	#include <arch/i8042.h>
30	#include <arch/i8259.h>	30	#include <arch/i8259.h>
31	#include <arch/interrupt.h>	31	#include <arch/interrupt.h>
32	#include <cpu.h>	32	#include <cpu.h>
33	#include <arch/asm.h>	33	#include <arch/asm.h>
34	#include <arch.h>	34	#include <arch.h>
35	#include <print.h>	35	#include <print.h>
36	#include <synch/spinlock.h>	36	#include <synch/spinlock.h>
37	#include <typedefs.h>	37	#include <typedefs.h>
38	#include <console/chardev.h>	38	#include <console/chardev.h>
39	#include <console/console.h>	39	#include <console/console.h>
40	#include <macros.h>	40	#include <macros.h>
41	#include <interrupt.h>	41	#include <interrupt.h>
42		42
43	/**	43	/**
44	* i8042 processor driver.	44	* i8042 processor driver.
45	* It takes care of low-level keyboard functions.	45	* It takes care of low-level keyboard functions.
46	*/	46	*/
47		47
48	#define i8042_DATA 0x60	48	#define i8042_DATA 0x60
49	#define i8042_STATUS 0x64	49	#define i8042_STATUS 0x64
50	#define i8042_BUFFER_FULL_MASK 0x01	50	#define i8042_BUFFER_FULL_MASK 0x01
51		51
52		-
53	/** Keyboard commands. */	52	/** Keyboard commands. */
54	#define KBD_ENABLE 0xf4	53	#define KBD_ENABLE 0xf4
55	#define KBD_DISABLE 0xf5	54	#define KBD_DISABLE 0xf5
56	#define KBD_ACK 0xfa	55	#define KBD_ACK 0xfa
57		56
58	/*	57	/*
59	60 Write 8042 Command Byte: next data byte written to port 60h is	58	* 60 Write 8042 Command Byte: next data byte written to port 60h is
60	placed in 8042 command register.Format:	59	* placed in 8042 command register.Format:
61		60	*
62	\|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte	61	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte
63	\| \| \| \| \| \| \| `---- 1=enable output register full interrupt	62	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt
64	\| \| \| \| \| \| `----- should be 0	63	* \| \| \| \| \| \| `----- should be 0
65	\| \| \| \| \| `------ 1=set status register system, 0=clear	64	* \| \| \| \| \| `------ 1=set status register system, 0=clear
66	\| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit	65	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit
67	\| \| \| `-------- disable keyboard I/O by driving clock line low	66	* \| \| \| `-------- disable keyboard I/O by driving clock line low
68	\| \| `--------- disable auxiliary device, drives clock line low	67	* \| \| `--------- disable auxiliary device, drives clock line low
69	\| `---------- IBM scancode translation 0=AT, 1=PC/XT	68	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT
70	`----------- reserved, should be 0	69	* `----------- reserved, should be 0
71	*/	70	*/
72		-
73	#define i8042_SET_COMMAND 0x60	-
74	#define i8042_COMMAND 0x49	-
75	#define i8042_WAIT_MASK 0x02	-
76		71
-		72	#define i8042_SET_COMMAND 0x60
-		73	#define i8042_COMMAND 0x49
-		74	#define i8042_WAIT_MASK 0x02
77		75
78	#define SPECIAL '?'	76	#define SPECIAL '?'
79	#define KEY_RELEASE 0x80	77	#define KEY_RELEASE 0x80
80		78
81	static void key_released(__u8 sc);	79	static void key_released(__u8 sc);
82	static void key_pressed(__u8 sc);	80	static void key_pressed(__u8 sc);
83	static char key_read(chardev_t *d);	81	static char key_read(chardev_t *d);
84		82
85	#define PRESSED_SHIFT (1<<0)	83	#define PRESSED_SHIFT (1<<0)
86	#define PRESSED_CAPSLOCK (1<<1)	84	#define PRESSED_CAPSLOCK (1<<1)
87	#define LOCKED_CAPSLOCK (1<<0)	85	#define LOCKED_CAPSLOCK (1<<0)
88		86
89	#define ACTIVE_READ_BUFF_SIZE 16 /Must be power of 2/	87	#define ACTIVE_READ_BUFF_SIZE 16 /Must be power of 2/
90		88
91		-
92	__u8 active_read_buff[ACTIVE_READ_BUFF_SIZE]={0};	89	__u8 active_read_buff[ACTIVE_READ_BUFF_SIZE]={0};
93		90
94	SPINLOCK_INITIALIZE(keylock); /*< keylock protects keyflags and lockflags. /	91	SPINLOCK_INITIALIZE(keylock); /*< keylock protects keyflags and lockflags. /
95	static volatile int keyflags; /*< Tracking of multiple keypresses. /	92	static volatile int keyflags; /*< Tracking of multiple keypresses. /
96	static volatile int lockflags; /*< Tracking of multiple keys lockings. /	93	static volatile int lockflags; /*< Tracking of multiple keys lockings. /
97		94
98	static void i8042_suspend(chardev_t *);	95	static void i8042_suspend(chardev_t *);
99	static void i8042_resume(chardev_t *);	96	static void i8042_resume(chardev_t *);
100		97
101	static chardev_t kbrd;	98	static chardev_t kbrd;
102	static chardev_operations_t ops = {	99	static chardev_operations_t ops = {
103	.suspend = i8042_suspend,	100	.suspend = i8042_suspend,
104	.resume = i8042_resume,	101	.resume = i8042_resume,
105	.read = key_read	102	.read = key_read
106	};	103	};
107		104
108	/** Primary meaning of scancodes. */	105	/** Primary meaning of scancodes. */
109	static char sc_primary_map[] = {	106	static char sc_primary_map[] = {
110	SPECIAL, /* 0x00 */	107	SPECIAL, /* 0x00 */
111	SPECIAL, /* 0x01 - Esc */	108	SPECIAL, /* 0x01 - Esc */
112	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',	109	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
113	'\b', /* 0x0e - Backspace */	110	'\b', /* 0x0e - Backspace */
114	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',	111	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
115	SPECIAL, /* 0x1d - LCtrl */	112	SPECIAL, /* 0x1d - LCtrl */
116	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',	113	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
117	'`',	114	'`',
118	SPECIAL, /* 0x2a - LShift */	115	SPECIAL, /* 0x2a - LShift */
119	'\\',	116	'\\',
120	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',	117	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
121	SPECIAL, /* 0x36 - RShift */	118	SPECIAL, /* 0x36 - RShift */
122	'*',	119	'*',
123	SPECIAL, /* 0x38 - LAlt */	120	SPECIAL, /* 0x38 - LAlt */
124	' ',	121	' ',
125	SPECIAL, /* 0x3a - CapsLock */	122	SPECIAL, /* 0x3a - CapsLock */
126	SPECIAL, /* 0x3b - F1 */	123	SPECIAL, /* 0x3b - F1 */
127	SPECIAL, /* 0x3c - F2 */	124	SPECIAL, /* 0x3c - F2 */
128	SPECIAL, /* 0x3d - F3 */	125	SPECIAL, /* 0x3d - F3 */
129	SPECIAL, /* 0x3e - F4 */	126	SPECIAL, /* 0x3e - F4 */
130	SPECIAL, /* 0x3f - F5 */	127	SPECIAL, /* 0x3f - F5 */
131	SPECIAL, /* 0x40 - F6 */	128	SPECIAL, /* 0x40 - F6 */
132	SPECIAL, /* 0x41 - F7 */	129	SPECIAL, /* 0x41 - F7 */
133	SPECIAL, /* 0x42 - F8 */	130	SPECIAL, /* 0x42 - F8 */
134	SPECIAL, /* 0x43 - F9 */	131	SPECIAL, /* 0x43 - F9 */
135	SPECIAL, /* 0x44 - F10 */	132	SPECIAL, /* 0x44 - F10 */
136	SPECIAL, /* 0x45 - NumLock */	133	SPECIAL, /* 0x45 - NumLock */
137	SPECIAL, /* 0x46 - ScrollLock */	134	SPECIAL, /* 0x46 - ScrollLock */
138	'7', '8', '9', '-',	135	'7', '8', '9', '-',
139	'4', '5', '6', '+',	136	'4', '5', '6', '+',
140	'1', '2', '3',	137	'1', '2', '3',
141	'0', '.',	138	'0', '.',
142	SPECIAL, /* 0x54 - Alt-SysRq */	139	SPECIAL, /* 0x54 - Alt-SysRq */
143	SPECIAL, /* 0x55 - F11/F12/PF1/FN */	140	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
144	SPECIAL, /* 0x56 - unlabelled key next to LAlt */	141	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
145	SPECIAL, /* 0x57 - F11 */	142	SPECIAL, /* 0x57 - F11 */
146	SPECIAL, /* 0x58 - F12 */	143	SPECIAL, /* 0x58 - F12 */
147	SPECIAL, /* 0x59 */	144	SPECIAL, /* 0x59 */
148	SPECIAL, /* 0x5a */	145	SPECIAL, /* 0x5a */
149	SPECIAL, /* 0x5b */	146	SPECIAL, /* 0x5b */
150	SPECIAL, /* 0x5c */	147	SPECIAL, /* 0x5c */
151	SPECIAL, /* 0x5d */	148	SPECIAL, /* 0x5d */
152	SPECIAL, /* 0x5e */	149	SPECIAL, /* 0x5e */
153	SPECIAL, /* 0x5f */	150	SPECIAL, /* 0x5f */
154	SPECIAL, /* 0x60 */	151	SPECIAL, /* 0x60 */
155	SPECIAL, /* 0x61 */	152	SPECIAL, /* 0x61 */
156	SPECIAL, /* 0x62 */	153	SPECIAL, /* 0x62 */
157	SPECIAL, /* 0x63 */	154	SPECIAL, /* 0x63 */
158	SPECIAL, /* 0x64 */	155	SPECIAL, /* 0x64 */
159	SPECIAL, /* 0x65 */	156	SPECIAL, /* 0x65 */
160	SPECIAL, /* 0x66 */	157	SPECIAL, /* 0x66 */
161	SPECIAL, /* 0x67 */	158	SPECIAL, /* 0x67 */
162	SPECIAL, /* 0x68 */	159	SPECIAL, /* 0x68 */
163	SPECIAL, /* 0x69 */	160	SPECIAL, /* 0x69 */
164	SPECIAL, /* 0x6a */	161	SPECIAL, /* 0x6a */
165	SPECIAL, /* 0x6b */	162	SPECIAL, /* 0x6b */
166	SPECIAL, /* 0x6c */	163	SPECIAL, /* 0x6c */
167	SPECIAL, /* 0x6d */	164	SPECIAL, /* 0x6d */
168	SPECIAL, /* 0x6e */	165	SPECIAL, /* 0x6e */
169	SPECIAL, /* 0x6f */	166	SPECIAL, /* 0x6f */
170	SPECIAL, /* 0x70 */	167	SPECIAL, /* 0x70 */
171	SPECIAL, /* 0x71 */	168	SPECIAL, /* 0x71 */
172	SPECIAL, /* 0x72 */	169	SPECIAL, /* 0x72 */
173	SPECIAL, /* 0x73 */	170	SPECIAL, /* 0x73 */
174	SPECIAL, /* 0x74 */	171	SPECIAL, /* 0x74 */
175	SPECIAL, /* 0x75 */	172	SPECIAL, /* 0x75 */
176	SPECIAL, /* 0x76 */	173	SPECIAL, /* 0x76 */
177	SPECIAL, /* 0x77 */	174	SPECIAL, /* 0x77 */
178	SPECIAL, /* 0x78 */	175	SPECIAL, /* 0x78 */
179	SPECIAL, /* 0x79 */	176	SPECIAL, /* 0x79 */
180	SPECIAL, /* 0x7a */	177	SPECIAL, /* 0x7a */
181	SPECIAL, /* 0x7b */	178	SPECIAL, /* 0x7b */
182	SPECIAL, /* 0x7c */	179	SPECIAL, /* 0x7c */
183	SPECIAL, /* 0x7d */	180	SPECIAL, /* 0x7d */
184	SPECIAL, /* 0x7e */	181	SPECIAL, /* 0x7e */
185	SPECIAL, /* 0x7f */	182	SPECIAL, /* 0x7f */
186	};	183	};
187		184
188	/** Secondary meaning of scancodes. */	185	/** Secondary meaning of scancodes. */
189	static char sc_secondary_map[] = {	186	static char sc_secondary_map[] = {
190	SPECIAL, /* 0x00 */	187	SPECIAL, /* 0x00 */
191	SPECIAL, /* 0x01 - Esc */	188	SPECIAL, /* 0x01 - Esc */
192	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',	189	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
193	SPECIAL, /* 0x0e - Backspace */	190	SPECIAL, /* 0x0e - Backspace */
194	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',	191	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
195	SPECIAL, /* 0x1d - LCtrl */	192	SPECIAL, /* 0x1d - LCtrl */
196	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',	193	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
197	'~',	194	'~',
198	SPECIAL, /* 0x2a - LShift */	195	SPECIAL, /* 0x2a - LShift */
199	'\|',	196	'\|',
200	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',	197	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
201	SPECIAL, /* 0x36 - RShift */	198	SPECIAL, /* 0x36 - RShift */
202	'*',	199	'*',
203	SPECIAL, /* 0x38 - LAlt */	200	SPECIAL, /* 0x38 - LAlt */
204	' ',	201	' ',
205	SPECIAL, /* 0x3a - CapsLock */	202	SPECIAL, /* 0x3a - CapsLock */
206	SPECIAL, /* 0x3b - F1 */	203	SPECIAL, /* 0x3b - F1 */
207	SPECIAL, /* 0x3c - F2 */	204	SPECIAL, /* 0x3c - F2 */
208	SPECIAL, /* 0x3d - F3 */	205	SPECIAL, /* 0x3d - F3 */
209	SPECIAL, /* 0x3e - F4 */	206	SPECIAL, /* 0x3e - F4 */
210	SPECIAL, /* 0x3f - F5 */	207	SPECIAL, /* 0x3f - F5 */
211	SPECIAL, /* 0x40 - F6 */	208	SPECIAL, /* 0x40 - F6 */
212	SPECIAL, /* 0x41 - F7 */	209	SPECIAL, /* 0x41 - F7 */
213	SPECIAL, /* 0x42 - F8 */	210	SPECIAL, /* 0x42 - F8 */
214	SPECIAL, /* 0x43 - F9 */	211	SPECIAL, /* 0x43 - F9 */
215	SPECIAL, /* 0x44 - F10 */	212	SPECIAL, /* 0x44 - F10 */
216	SPECIAL, /* 0x45 - NumLock */	213	SPECIAL, /* 0x45 - NumLock */
217	SPECIAL, /* 0x46 - ScrollLock */	214	SPECIAL, /* 0x46 - ScrollLock */
218	'7', '8', '9', '-',	215	'7', '8', '9', '-',
219	'4', '5', '6', '+',	216	'4', '5', '6', '+',
220	'1', '2', '3',	217	'1', '2', '3',
221	'0', '.',	218	'0', '.',
222	SPECIAL, /* 0x54 - Alt-SysRq */	219	SPECIAL, /* 0x54 - Alt-SysRq */
223	SPECIAL, /* 0x55 - F11/F12/PF1/FN */	220	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
224	SPECIAL, /* 0x56 - unlabelled key next to LAlt */	221	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
225	SPECIAL, /* 0x57 - F11 */	222	SPECIAL, /* 0x57 - F11 */
226	SPECIAL, /* 0x58 - F12 */	223	SPECIAL, /* 0x58 - F12 */
227	SPECIAL, /* 0x59 */	224	SPECIAL, /* 0x59 */
228	SPECIAL, /* 0x5a */	225	SPECIAL, /* 0x5a */
229	SPECIAL, /* 0x5b */	226	SPECIAL, /* 0x5b */
230	SPECIAL, /* 0x5c */	227	SPECIAL, /* 0x5c */
231	SPECIAL, /* 0x5d */	228	SPECIAL, /* 0x5d */
232	SPECIAL, /* 0x5e */	229	SPECIAL, /* 0x5e */
233	SPECIAL, /* 0x5f */	230	SPECIAL, /* 0x5f */
234	SPECIAL, /* 0x60 */	231	SPECIAL, /* 0x60 */
235	SPECIAL, /* 0x61 */	232	SPECIAL, /* 0x61 */
236	SPECIAL, /* 0x62 */	233	SPECIAL, /* 0x62 */
237	SPECIAL, /* 0x63 */	234	SPECIAL, /* 0x63 */
238	SPECIAL, /* 0x64 */	235	SPECIAL, /* 0x64 */
239	SPECIAL, /* 0x65 */	236	SPECIAL, /* 0x65 */
240	SPECIAL, /* 0x66 */	237	SPECIAL, /* 0x66 */
241	SPECIAL, /* 0x67 */	238	SPECIAL, /* 0x67 */
242	SPECIAL, /* 0x68 */	239	SPECIAL, /* 0x68 */
243	SPECIAL, /* 0x69 */	240	SPECIAL, /* 0x69 */
244	SPECIAL, /* 0x6a */	241	SPECIAL, /* 0x6a */
245	SPECIAL, /* 0x6b */	242	SPECIAL, /* 0x6b */
246	SPECIAL, /* 0x6c */	243	SPECIAL, /* 0x6c */
247	SPECIAL, /* 0x6d */	244	SPECIAL, /* 0x6d */
248	SPECIAL, /* 0x6e */	245	SPECIAL, /* 0x6e */
249	SPECIAL, /* 0x6f */	246	SPECIAL, /* 0x6f */
250	SPECIAL, /* 0x70 */	247	SPECIAL, /* 0x70 */
251	SPECIAL, /* 0x71 */	248	SPECIAL, /* 0x71 */
252	SPECIAL, /* 0x72 */	249	SPECIAL, /* 0x72 */
253	SPECIAL, /* 0x73 */	250	SPECIAL, /* 0x73 */
254	SPECIAL, /* 0x74 */	251	SPECIAL, /* 0x74 */
255	SPECIAL, /* 0x75 */	252	SPECIAL, /* 0x75 */
256	SPECIAL, /* 0x76 */	253	SPECIAL, /* 0x76 */
257	SPECIAL, /* 0x77 */	254	SPECIAL, /* 0x77 */
258	SPECIAL, /* 0x78 */	255	SPECIAL, /* 0x78 */
259	SPECIAL, /* 0x79 */	256	SPECIAL, /* 0x79 */
260	SPECIAL, /* 0x7a */	257	SPECIAL, /* 0x7a */
261	SPECIAL, /* 0x7b */	258	SPECIAL, /* 0x7b */
262	SPECIAL, /* 0x7c */	259	SPECIAL, /* 0x7c */
263	SPECIAL, /* 0x7d */	260	SPECIAL, /* 0x7d */
264	SPECIAL, /* 0x7e */	261	SPECIAL, /* 0x7e */
265	SPECIAL, /* 0x7f */	262	SPECIAL, /* 0x7f */
266	};	263	};
267		264
268	static void i8042_interrupt(int n, void *stack);	265	static void i8042_interrupt(int n, void *stack);
269		266
270	/** Initialize i8042. */	267	/** Initialize i8042. */
271	void i8042_init(void)	268	void i8042_init(void)
272	{	269	{
273	exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);	270	exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);
274	while (inb(i8042_STATUS)&i8042_WAIT_MASK); /Wait/	271	while (inb(i8042_STATUS)&i8042_WAIT_MASK) {
-		272	/* wait */
-		273	}
275	outb(i8042_STATUS,i8042_SET_COMMAND);	274	outb(i8042_STATUS,i8042_SET_COMMAND);
276	while (inb(i8042_STATUS)&i8042_WAIT_MASK); /Wait/	275	while (inb(i8042_STATUS)&i8042_WAIT_MASK) {
-		276	/* wait */
-		277	}
277	outb(i8042_DATA,i8042_COMMAND);	278	outb(i8042_DATA,i8042_COMMAND);
278		279
279	trap_virtual_enable_irqs(1<<IRQ_KBD);	280	trap_virtual_enable_irqs(1<<IRQ_KBD);
280	chardev_initialize("i8042_kbd", &kbrd, &ops);	281	chardev_initialize("i8042_kbd", &kbrd, &ops);
281	stdin = &kbrd;	282	stdin = &kbrd;
282	}	283	}
283		284
284	/** Process i8042 interrupt.	285	/** Process i8042 interrupt.
285	*	286	*
286	* @param n Interrupt vector.	287	* @param n Interrupt vector.
287	* @param stack Interrupted stack.	288	* @param stack Interrupted stack.
288	*/	289	*/
289	void i8042_interrupt(int n, void *stack)	290	void i8042_interrupt(int n, void *stack)
290	{	291	{
291	__u8 x;	292	__u8 x;
292		293
293	trap_virtual_eoi();	294	trap_virtual_eoi();
294	x = inb(i8042_DATA);	295	x = inb(i8042_DATA);
295	if (x & KEY_RELEASE)	296	if (x & KEY_RELEASE)
296	key_released(x ^ KEY_RELEASE);	297	key_released(x ^ KEY_RELEASE);
297	else	298	else
298	key_pressed(x);	299	key_pressed(x);
299	}	300	}
300		301
301	/** Process release of key.	302	/** Process release of key.
302	*	303	*
303	* @param sc Scancode of the key being released.	304	* @param sc Scancode of the key being released.
304	*/	305	*/
305	void key_released(__u8 sc)	306	void key_released(__u8 sc)
306	{	307	{
307	spinlock_lock(&keylock);	308	spinlock_lock(&keylock);
308	switch (sc) {	309	switch (sc) {
309	case SC_LSHIFT:	310	case SC_LSHIFT:
310	case SC_RSHIFT:	311	case SC_RSHIFT:
311	keyflags &= ~PRESSED_SHIFT;	312	keyflags &= ~PRESSED_SHIFT;
312	break;	313	break;
313	case SC_CAPSLOCK:	314	case SC_CAPSLOCK:
314	keyflags &= ~PRESSED_CAPSLOCK;	315	keyflags &= ~PRESSED_CAPSLOCK;
315	if (lockflags & LOCKED_CAPSLOCK)	316	if (lockflags & LOCKED_CAPSLOCK)
316	lockflags &= ~LOCKED_CAPSLOCK;	317	lockflags &= ~LOCKED_CAPSLOCK;
317	else	318	else
318	lockflags \|= LOCKED_CAPSLOCK;	319	lockflags \|= LOCKED_CAPSLOCK;
319	break;	320	break;
320	default:	321	default:
321	break;	322	break;
322	}	323	}
323	spinlock_unlock(&keylock);	324	spinlock_unlock(&keylock);
324	}	325	}
325		326
326	/** Process keypress.	327	/** Process keypress.
327	*	328	*
328	* @param sc Scancode of the key being pressed.	329	* @param sc Scancode of the key being pressed.
329	*/	330	*/
330	void key_pressed(__u8 sc)	331	void key_pressed(__u8 sc)
331	{	332	{
332	char *map = sc_primary_map;	333	char *map = sc_primary_map;
333	char ascii = sc_primary_map[sc];	334	char ascii = sc_primary_map[sc];
334	bool shift, capslock;	335	bool shift, capslock;
335	bool letter = false;	336	bool letter = false;
336		337
337	spinlock_lock(&keylock);	338	spinlock_lock(&keylock);
338	switch (sc) {	339	switch (sc) {
339	case SC_LSHIFT:	340	case SC_LSHIFT:
340	case SC_RSHIFT:	341	case SC_RSHIFT:
341	keyflags \|= PRESSED_SHIFT;	342	keyflags \|= PRESSED_SHIFT;
342	break;	343	break;
343	case SC_CAPSLOCK:	344	case SC_CAPSLOCK:
344	keyflags \|= PRESSED_CAPSLOCK;	345	keyflags \|= PRESSED_CAPSLOCK;
345	break;	346	break;
346	case SC_SPEC_ESCAPE:	347	case SC_SPEC_ESCAPE:
347	break;	348	break;
348	case SC_LEFTARR:	349	case SC_LEFTARR:
349	chardev_push_character(&kbrd, 0x1b);	350	chardev_push_character(&kbrd, 0x1b);
350	chardev_push_character(&kbrd, 0x5b);	351	chardev_push_character(&kbrd, 0x5b);
351	chardev_push_character(&kbrd, 0x44);	352	chardev_push_character(&kbrd, 0x44);
352	break;	353	break;
353	case SC_RIGHTARR:	354	case SC_RIGHTARR:
354	chardev_push_character(&kbrd, 0x1b);	355	chardev_push_character(&kbrd, 0x1b);
355	chardev_push_character(&kbrd, 0x5b);	356	chardev_push_character(&kbrd, 0x5b);
356	chardev_push_character(&kbrd, 0x43);	357	chardev_push_character(&kbrd, 0x43);
357	break;	358	break;
358	case SC_UPARR:	359	case SC_UPARR:
359	chardev_push_character(&kbrd, 0x1b);	360	chardev_push_character(&kbrd, 0x1b);
360	chardev_push_character(&kbrd, 0x5b);	361	chardev_push_character(&kbrd, 0x5b);
361	chardev_push_character(&kbrd, 0x41);	362	chardev_push_character(&kbrd, 0x41);
362	break;	363	break;
363	case SC_DOWNARR:	364	case SC_DOWNARR:
364	chardev_push_character(&kbrd, 0x1b);	365	chardev_push_character(&kbrd, 0x1b);
365	chardev_push_character(&kbrd, 0x5b);	366	chardev_push_character(&kbrd, 0x5b);
366	chardev_push_character(&kbrd, 0x42);	367	chardev_push_character(&kbrd, 0x42);
367	break;	368	break;
368	case SC_HOME:	369	case SC_HOME:
369	chardev_push_character(&kbrd, 0x1b);	370	chardev_push_character(&kbrd, 0x1b);
370	chardev_push_character(&kbrd, 0x4f);	371	chardev_push_character(&kbrd, 0x4f);
371	chardev_push_character(&kbrd, 0x48);	372	chardev_push_character(&kbrd, 0x48);
372	break;	373	break;
373	case SC_END:	374	case SC_END:
374	chardev_push_character(&kbrd, 0x1b);	375	chardev_push_character(&kbrd, 0x1b);
375	chardev_push_character(&kbrd, 0x4f);	376	chardev_push_character(&kbrd, 0x4f);
376	chardev_push_character(&kbrd, 0x46);	377	chardev_push_character(&kbrd, 0x46);
377	break;	378	break;
378	case SC_DELETE:	379	case SC_DELETE:
379	chardev_push_character(&kbrd, 0x1b);	380	chardev_push_character(&kbrd, 0x1b);
380	chardev_push_character(&kbrd, 0x5b);	381	chardev_push_character(&kbrd, 0x5b);
381	chardev_push_character(&kbrd, 0x33);	382	chardev_push_character(&kbrd, 0x33);
382	chardev_push_character(&kbrd, 0x7e);	383	chardev_push_character(&kbrd, 0x7e);
383	break;	384	break;
384	default:	385	default:
385	letter = is_lower(ascii);	386	letter = is_lower(ascii);
386	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);	387	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
387	shift = keyflags & PRESSED_SHIFT;	388	shift = keyflags & PRESSED_SHIFT;
388	if (letter && capslock)	389	if (letter && capslock)
389	shift = !shift;	390	shift = !shift;
390	if (shift)	391	if (shift)
391	map = sc_secondary_map;	392	map = sc_secondary_map;
392	chardev_push_character(&kbrd, map[sc]);	393	chardev_push_character(&kbrd, map[sc]);
393	break;	394	break;
394	}	395	}
395	spinlock_unlock(&keylock);	396	spinlock_unlock(&keylock);
396	}	397	}
397		398
398	/* Called from getc(). */	399	/* Called from getc(). */
399	void i8042_resume(chardev_t *d)	400	void i8042_resume(chardev_t *d)
400	{	401	{
401	}	402	}
402		403
403	/* Called from getc(). */	404	/* Called from getc(). */
404	void i8042_suspend(chardev_t *d)	405	void i8042_suspend(chardev_t *d)
405	{	406	{
406	}	407	}
407		408
408		-
409	static __u8 active_read_buff_read(void)	409	static __u8 active_read_buff_read(void)
410	{	410	{
411	static int i=0;	411	static int i=0;
412	i&=(ACTIVE_READ_BUFF_SIZE-1);	412	i&=(ACTIVE_READ_BUFF_SIZE-1);
413	if(!active_read_buff[i])	413	if(!active_read_buff[i])
414	{	414	{
415	return 0;	415	return 0;
416	}	416	}
417	return active_read_buff[i++];	417	return active_read_buff[i++];
418	}	418	}
419		419
420	static void active_read_buff_write(__u8 ch)	420	static void active_read_buff_write(__u8 ch)
421	{	421	{
422	static int i=0;	422	static int i=0;
423	active_read_buff[i]=ch;	423	active_read_buff[i]=ch;
424	i++;	424	i++;
425	i&=(ACTIVE_READ_BUFF_SIZE-1);	425	i&=(ACTIVE_READ_BUFF_SIZE-1);
426	active_read_buff[i]=0;	426	active_read_buff[i]=0;
427	}	427	}
428		428
429		429
430	static void active_readed_key_pressed(__u8 sc)	430	static void active_read_key_pressed(__u8 sc)
431	{	431	{
432	char *map = sc_primary_map;	432	char *map = sc_primary_map;
433	char ascii = sc_primary_map[sc];	433	char ascii = sc_primary_map[sc];
434	bool shift, capslock;	434	bool shift, capslock;
435	bool letter = false;	435	bool letter = false;
436		436
437	/spinlock_lock(&keylock);/	437	/spinlock_lock(&keylock);/
438	switch (sc) {	438	switch (sc) {
439	case SC_LSHIFT:	439	case SC_LSHIFT:
440	case SC_RSHIFT:	440	case SC_RSHIFT:
441	keyflags \|= PRESSED_SHIFT;	441	keyflags \|= PRESSED_SHIFT;
442	break;	442	break;
443	case SC_CAPSLOCK:	443	case SC_CAPSLOCK:
444	keyflags \|= PRESSED_CAPSLOCK;	444	keyflags \|= PRESSED_CAPSLOCK;
445	break;	445	break;
446	case SC_SPEC_ESCAPE:	446	case SC_SPEC_ESCAPE:
447	break;	447	break;
448	case SC_LEFTARR:	448	case SC_LEFTARR:
449	active_read_buff_write(0x1b);	449	active_read_buff_write(0x1b);
450	active_read_buff_write(0x5b);	450	active_read_buff_write(0x5b);
451	active_read_buff_write(0x44);	451	active_read_buff_write(0x44);
452	break;	452	break;
453	case SC_RIGHTARR:	453	case SC_RIGHTARR:
454	active_read_buff_write(0x1b);	454	active_read_buff_write(0x1b);
455	active_read_buff_write(0x5b);	455	active_read_buff_write(0x5b);
456	active_read_buff_write(0x43);	456	active_read_buff_write(0x43);
457	break;	457	break;
458	case SC_UPARR:	458	case SC_UPARR:
459	active_read_buff_write(0x1b);	459	active_read_buff_write(0x1b);
460	active_read_buff_write(0x5b);	460	active_read_buff_write(0x5b);
461	active_read_buff_write(0x41);	461	active_read_buff_write(0x41);
462	break;	462	break;
463	case SC_DOWNARR:	463	case SC_DOWNARR:
464	active_read_buff_write(0x1b);	464	active_read_buff_write(0x1b);
465	active_read_buff_write(0x5b);	465	active_read_buff_write(0x5b);
466	active_read_buff_write(0x42);	466	active_read_buff_write(0x42);
467	break;	467	break;
468	case SC_HOME:	468	case SC_HOME:
469	active_read_buff_write(0x1b);	469	active_read_buff_write(0x1b);
470	active_read_buff_write(0x4f);	470	active_read_buff_write(0x4f);
471	active_read_buff_write(0x48);	471	active_read_buff_write(0x48);
472	break;	472	break;
473	case SC_END:	473	case SC_END:
474	active_read_buff_write(0x1b);	474	active_read_buff_write(0x1b);
475	active_read_buff_write(0x4f);	475	active_read_buff_write(0x4f);
476	active_read_buff_write(0x46);	476	active_read_buff_write(0x46);
477	break;	477	break;
478	case SC_DELETE:	478	case SC_DELETE:
479	active_read_buff_write(0x1b);	479	active_read_buff_write(0x1b);
480	active_read_buff_write(0x5b);	480	active_read_buff_write(0x5b);
481	active_read_buff_write(0x33);	481	active_read_buff_write(0x33);
482	active_read_buff_write(0x7e);	482	active_read_buff_write(0x7e);
483	break;	483	break;
484	default:	484	default:
485	letter = is_lower(ascii);	485	letter = is_lower(ascii);
486	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);	486	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
487	shift = keyflags & PRESSED_SHIFT;	487	shift = keyflags & PRESSED_SHIFT;
488	if (letter && capslock)	488	if (letter && capslock)
489	shift = !shift;	489	shift = !shift;
490	if (shift)	490	if (shift)
491	map = sc_secondary_map;	491	map = sc_secondary_map;
492	active_read_buff_write(map[sc]);	492	active_read_buff_write(map[sc]);
493	break;	493	break;

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/genarch/src/i8042/i8042.c @ 1753 – Rev 878 → 893