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 <genarch/i8042/i8042.h>
#include <arch/drivers/i8042.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.
 */
 
/** 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_BUFFER_FULL_MASK  0x01
#define i8042_WAIT_MASK     0x02
 
#define SPECIAL     '?'
#define KEY_RELEASE 0x80
 
/**
 * These codes read from i8042 data register are silently ignored.
 */
#define IGNORE_CODE 0x7f
 
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 */
 
static __u8 active_read_buff[ACTIVE_READ_BUFF_SIZE];
 
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, istate_t *istate);
static void i8042_wait(void);
 
/** Initialize i8042. */
void i8042_init(void)
{
    exc_register(VECTOR_KBD, "i8042_interrupt", (iroutine) i8042_interrupt);
    i8042_wait();
    i8042_command_write(i8042_SET_COMMAND);
    i8042_wait();
    i8042_data_write(i8042_COMMAND);
    i8042_wait();
 
    trap_virtual_enable_irqs(1<<IRQ_KBD);
    chardev_initialize("i8042_kbd", &kbrd, &ops);
    stdin = &kbrd;
    {
        int a=0;
        while(a<20) {i8042_data_read();a++;}  /*Clear input buffer*/
    }
}
 
/** Process i8042 interrupt.
 *
 * @param n Interrupt vector.
 * @param stack Interrupted stack.
 */
void i8042_interrupt(int n, istate_t *istate)
{
    __u8 x;
 
    trap_virtual_eoi();
    x = i8042_data_read();
    if (x & KEY_RELEASE)
        key_released(x ^ KEY_RELEASE);
    else
        key_pressed(x);
}
 
/** Wait until the controller reads its data. */
void i8042_wait(void) {
    while (i8042_status_read() & i8042_WAIT_MASK) {
        /* wait */
    }
}
 
/** 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=i8042_status_read() & i8042_BUFFER_FULL_MASK)))
            ;
        x = i8042_data_read();
        if (x != IGNORE_CODE) {
            if (x & KEY_RELEASE)
                key_released(x ^ KEY_RELEASE);
            else
                active_read_key_pressed(x);
        }
    }
    return ch;
}
 
/** Poll for key press and release events.
 *
 * This function can be used to implement keyboard polling.
 */
void i8042_poll(void)
{
    __u8 x;
 
    while (((x = i8042_status_read() & i8042_BUFFER_FULL_MASK))) {
        x = i8042_data_read();
        if (x != IGNORE_CODE) {
            if (x & KEY_RELEASE)
                key_released(x ^ KEY_RELEASE);
            else
                key_pressed(x);
        }
    }
}
 

Rev 958	Rev 1193
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 <genarch/i8042/i8042.h>	29	#include <genarch/i8042/i8042.h>
30	#include <arch/drivers/i8042.h>	30	#include <arch/drivers/i8042.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	/** Keyboard commands. */	48	/** Keyboard commands. */
49	#define KBD_ENABLE 0xf4	49	#define KBD_ENABLE 0xf4
50	#define KBD_DISABLE 0xf5	50	#define KBD_DISABLE 0xf5
51	#define KBD_ACK 0xfa	51	#define KBD_ACK 0xfa
52		52
53	/*	53	/*
54	* 60 Write 8042 Command Byte: next data byte written to port 60h is	54	* 60 Write 8042 Command Byte: next data byte written to port 60h is
55	* placed in 8042 command register. Format:	55	* placed in 8042 command register. Format:
56	*	56	*
57	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte	57	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte
58	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt	58	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt
59	* \| \| \| \| \| \| `----- should be 0	59	* \| \| \| \| \| \| `----- should be 0
60	* \| \| \| \| \| `------ 1=set status register system, 0=clear	60	* \| \| \| \| \| `------ 1=set status register system, 0=clear
61	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit	61	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit
62	* \| \| \| `-------- disable keyboard I/O by driving clock line low	62	* \| \| \| `-------- disable keyboard I/O by driving clock line low
63	* \| \| `--------- disable auxiliary device, drives clock line low	63	* \| \| `--------- disable auxiliary device, drives clock line low
64	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT	64	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT
65	* `----------- reserved, should be 0	65	* `----------- reserved, should be 0
66	*/	66	*/
67		67
68	#define i8042_SET_COMMAND 0x60	68	#define i8042_SET_COMMAND 0x60
69	#define i8042_COMMAND 0x49	69	#define i8042_COMMAND 0x49
70		70
71	#define i8042_BUFFER_FULL_MASK 0x01	71	#define i8042_BUFFER_FULL_MASK 0x01
72	#define i8042_WAIT_MASK 0x02	72	#define i8042_WAIT_MASK 0x02
73		73
74	#define SPECIAL '?'	74	#define SPECIAL '?'
75	#define KEY_RELEASE 0x80	75	#define KEY_RELEASE 0x80
76		76
77	/**	77	/**
78	* These codes read from i8042 data register are silently ignored.	78	* These codes read from i8042 data register are silently ignored.
79	*/	79	*/
80	#define IGNORE_CODE 0x7f	80	#define IGNORE_CODE 0x7f
81		81
82	static void key_released(__u8 sc);	82	static void key_released(__u8 sc);
83	static void key_pressed(__u8 sc);	83	static void key_pressed(__u8 sc);
84	static char key_read(chardev_t *d);	84	static char key_read(chardev_t *d);
85		85
86	#define PRESSED_SHIFT (1<<0)	86	#define PRESSED_SHIFT (1<<0)
87	#define PRESSED_CAPSLOCK (1<<1)	87	#define PRESSED_CAPSLOCK (1<<1)
88	#define LOCKED_CAPSLOCK (1<<0)	88	#define LOCKED_CAPSLOCK (1<<0)
89		89
90	#define ACTIVE_READ_BUFF_SIZE 16 /* Must be power of 2 */	90	#define ACTIVE_READ_BUFF_SIZE 16 /* Must be power of 2 */
91		91
92	static __u8 active_read_buff[ACTIVE_READ_BUFF_SIZE];	92	static __u8 active_read_buff[ACTIVE_READ_BUFF_SIZE];
93		93
94	SPINLOCK_INITIALIZE(keylock); /*< keylock protects keyflags and lockflags. /	94	SPINLOCK_INITIALIZE(keylock); /*< keylock protects keyflags and lockflags. /
95	static volatile int keyflags; /*< Tracking of multiple keypresses. /	95	static volatile int keyflags; /*< Tracking of multiple keypresses. /
96	static volatile int lockflags; /*< Tracking of multiple keys lockings. /	96	static volatile int lockflags; /*< Tracking of multiple keys lockings. /
97		97
98	static void i8042_suspend(chardev_t *);	98	static void i8042_suspend(chardev_t *);
99	static void i8042_resume(chardev_t *);	99	static void i8042_resume(chardev_t *);
100		100
101	static chardev_t kbrd;	101	static chardev_t kbrd;
102	static chardev_operations_t ops = {	102	static chardev_operations_t ops = {
103	.suspend = i8042_suspend,	103	.suspend = i8042_suspend,
104	.resume = i8042_resume,	104	.resume = i8042_resume,
105	.read = key_read	105	.read = key_read
106	};	106	};
107		107
108	/** Primary meaning of scancodes. */	108	/** Primary meaning of scancodes. */
109	static char sc_primary_map[] = {	109	static char sc_primary_map[] = {
110	SPECIAL, /* 0x00 */	110	SPECIAL, /* 0x00 */
111	SPECIAL, /* 0x01 - Esc */	111	SPECIAL, /* 0x01 - Esc */
112	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',	112	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
113	'\b', /* 0x0e - Backspace */	113	'\b', /* 0x0e - Backspace */
114	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',	114	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
115	SPECIAL, /* 0x1d - LCtrl */	115	SPECIAL, /* 0x1d - LCtrl */
116	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',	116	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
117	'`',	117	'`',
118	SPECIAL, /* 0x2a - LShift */	118	SPECIAL, /* 0x2a - LShift */
119	'\\',	119	'\\',
120	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',	120	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
121	SPECIAL, /* 0x36 - RShift */	121	SPECIAL, /* 0x36 - RShift */
122	'*',	122	'*',
123	SPECIAL, /* 0x38 - LAlt */	123	SPECIAL, /* 0x38 - LAlt */
124	' ',	124	' ',
125	SPECIAL, /* 0x3a - CapsLock */	125	SPECIAL, /* 0x3a - CapsLock */
126	SPECIAL, /* 0x3b - F1 */	126	SPECIAL, /* 0x3b - F1 */
127	SPECIAL, /* 0x3c - F2 */	127	SPECIAL, /* 0x3c - F2 */
128	SPECIAL, /* 0x3d - F3 */	128	SPECIAL, /* 0x3d - F3 */
129	SPECIAL, /* 0x3e - F4 */	129	SPECIAL, /* 0x3e - F4 */
130	SPECIAL, /* 0x3f - F5 */	130	SPECIAL, /* 0x3f - F5 */
131	SPECIAL, /* 0x40 - F6 */	131	SPECIAL, /* 0x40 - F6 */
132	SPECIAL, /* 0x41 - F7 */	132	SPECIAL, /* 0x41 - F7 */
133	SPECIAL, /* 0x42 - F8 */	133	SPECIAL, /* 0x42 - F8 */
134	SPECIAL, /* 0x43 - F9 */	134	SPECIAL, /* 0x43 - F9 */
135	SPECIAL, /* 0x44 - F10 */	135	SPECIAL, /* 0x44 - F10 */
136	SPECIAL, /* 0x45 - NumLock */	136	SPECIAL, /* 0x45 - NumLock */
137	SPECIAL, /* 0x46 - ScrollLock */	137	SPECIAL, /* 0x46 - ScrollLock */
138	'7', '8', '9', '-',	138	'7', '8', '9', '-',
139	'4', '5', '6', '+',	139	'4', '5', '6', '+',
140	'1', '2', '3',	140	'1', '2', '3',
141	'0', '.',	141	'0', '.',
142	SPECIAL, /* 0x54 - Alt-SysRq */	142	SPECIAL, /* 0x54 - Alt-SysRq */
143	SPECIAL, /* 0x55 - F11/F12/PF1/FN */	143	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
144	SPECIAL, /* 0x56 - unlabelled key next to LAlt */	144	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
145	SPECIAL, /* 0x57 - F11 */	145	SPECIAL, /* 0x57 - F11 */
146	SPECIAL, /* 0x58 - F12 */	146	SPECIAL, /* 0x58 - F12 */
147	SPECIAL, /* 0x59 */	147	SPECIAL, /* 0x59 */
148	SPECIAL, /* 0x5a */	148	SPECIAL, /* 0x5a */
149	SPECIAL, /* 0x5b */	149	SPECIAL, /* 0x5b */
150	SPECIAL, /* 0x5c */	150	SPECIAL, /* 0x5c */
151	SPECIAL, /* 0x5d */	151	SPECIAL, /* 0x5d */
152	SPECIAL, /* 0x5e */	152	SPECIAL, /* 0x5e */
153	SPECIAL, /* 0x5f */	153	SPECIAL, /* 0x5f */
154	SPECIAL, /* 0x60 */	154	SPECIAL, /* 0x60 */
155	SPECIAL, /* 0x61 */	155	SPECIAL, /* 0x61 */
156	SPECIAL, /* 0x62 */	156	SPECIAL, /* 0x62 */
157	SPECIAL, /* 0x63 */	157	SPECIAL, /* 0x63 */
158	SPECIAL, /* 0x64 */	158	SPECIAL, /* 0x64 */
159	SPECIAL, /* 0x65 */	159	SPECIAL, /* 0x65 */
160	SPECIAL, /* 0x66 */	160	SPECIAL, /* 0x66 */
161	SPECIAL, /* 0x67 */	161	SPECIAL, /* 0x67 */
162	SPECIAL, /* 0x68 */	162	SPECIAL, /* 0x68 */
163	SPECIAL, /* 0x69 */	163	SPECIAL, /* 0x69 */
164	SPECIAL, /* 0x6a */	164	SPECIAL, /* 0x6a */
165	SPECIAL, /* 0x6b */	165	SPECIAL, /* 0x6b */
166	SPECIAL, /* 0x6c */	166	SPECIAL, /* 0x6c */
167	SPECIAL, /* 0x6d */	167	SPECIAL, /* 0x6d */
168	SPECIAL, /* 0x6e */	168	SPECIAL, /* 0x6e */
169	SPECIAL, /* 0x6f */	169	SPECIAL, /* 0x6f */
170	SPECIAL, /* 0x70 */	170	SPECIAL, /* 0x70 */
171	SPECIAL, /* 0x71 */	171	SPECIAL, /* 0x71 */
172	SPECIAL, /* 0x72 */	172	SPECIAL, /* 0x72 */
173	SPECIAL, /* 0x73 */	173	SPECIAL, /* 0x73 */
174	SPECIAL, /* 0x74 */	174	SPECIAL, /* 0x74 */
175	SPECIAL, /* 0x75 */	175	SPECIAL, /* 0x75 */
176	SPECIAL, /* 0x76 */	176	SPECIAL, /* 0x76 */
177	SPECIAL, /* 0x77 */	177	SPECIAL, /* 0x77 */
178	SPECIAL, /* 0x78 */	178	SPECIAL, /* 0x78 */
179	SPECIAL, /* 0x79 */	179	SPECIAL, /* 0x79 */
180	SPECIAL, /* 0x7a */	180	SPECIAL, /* 0x7a */
181	SPECIAL, /* 0x7b */	181	SPECIAL, /* 0x7b */
182	SPECIAL, /* 0x7c */	182	SPECIAL, /* 0x7c */
183	SPECIAL, /* 0x7d */	183	SPECIAL, /* 0x7d */
184	SPECIAL, /* 0x7e */	184	SPECIAL, /* 0x7e */
185	SPECIAL, /* 0x7f */	185	SPECIAL, /* 0x7f */
186	};	186	};
187		187
188	/** Secondary meaning of scancodes. */	188	/** Secondary meaning of scancodes. */
189	static char sc_secondary_map[] = {	189	static char sc_secondary_map[] = {
190	SPECIAL, /* 0x00 */	190	SPECIAL, /* 0x00 */
191	SPECIAL, /* 0x01 - Esc */	191	SPECIAL, /* 0x01 - Esc */
192	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',	192	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
193	SPECIAL, /* 0x0e - Backspace */	193	SPECIAL, /* 0x0e - Backspace */
194	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',	194	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
195	SPECIAL, /* 0x1d - LCtrl */	195	SPECIAL, /* 0x1d - LCtrl */
196	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',	196	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
197	'~',	197	'~',
198	SPECIAL, /* 0x2a - LShift */	198	SPECIAL, /* 0x2a - LShift */
199	'\|',	199	'\|',
200	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',	200	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
201	SPECIAL, /* 0x36 - RShift */	201	SPECIAL, /* 0x36 - RShift */
202	'*',	202	'*',
203	SPECIAL, /* 0x38 - LAlt */	203	SPECIAL, /* 0x38 - LAlt */
204	' ',	204	' ',
205	SPECIAL, /* 0x3a - CapsLock */	205	SPECIAL, /* 0x3a - CapsLock */
206	SPECIAL, /* 0x3b - F1 */	206	SPECIAL, /* 0x3b - F1 */
207	SPECIAL, /* 0x3c - F2 */	207	SPECIAL, /* 0x3c - F2 */
208	SPECIAL, /* 0x3d - F3 */	208	SPECIAL, /* 0x3d - F3 */
209	SPECIAL, /* 0x3e - F4 */	209	SPECIAL, /* 0x3e - F4 */
210	SPECIAL, /* 0x3f - F5 */	210	SPECIAL, /* 0x3f - F5 */
211	SPECIAL, /* 0x40 - F6 */	211	SPECIAL, /* 0x40 - F6 */
212	SPECIAL, /* 0x41 - F7 */	212	SPECIAL, /* 0x41 - F7 */
213	SPECIAL, /* 0x42 - F8 */	213	SPECIAL, /* 0x42 - F8 */
214	SPECIAL, /* 0x43 - F9 */	214	SPECIAL, /* 0x43 - F9 */
215	SPECIAL, /* 0x44 - F10 */	215	SPECIAL, /* 0x44 - F10 */
216	SPECIAL, /* 0x45 - NumLock */	216	SPECIAL, /* 0x45 - NumLock */
217	SPECIAL, /* 0x46 - ScrollLock */	217	SPECIAL, /* 0x46 - ScrollLock */
218	'7', '8', '9', '-',	218	'7', '8', '9', '-',
219	'4', '5', '6', '+',	219	'4', '5', '6', '+',
220	'1', '2', '3',	220	'1', '2', '3',
221	'0', '.',	221	'0', '.',
222	SPECIAL, /* 0x54 - Alt-SysRq */	222	SPECIAL, /* 0x54 - Alt-SysRq */
223	SPECIAL, /* 0x55 - F11/F12/PF1/FN */	223	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
224	SPECIAL, /* 0x56 - unlabelled key next to LAlt */	224	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
225	SPECIAL, /* 0x57 - F11 */	225	SPECIAL, /* 0x57 - F11 */
226	SPECIAL, /* 0x58 - F12 */	226	SPECIAL, /* 0x58 - F12 */
227	SPECIAL, /* 0x59 */	227	SPECIAL, /* 0x59 */
228	SPECIAL, /* 0x5a */	228	SPECIAL, /* 0x5a */
229	SPECIAL, /* 0x5b */	229	SPECIAL, /* 0x5b */
230	SPECIAL, /* 0x5c */	230	SPECIAL, /* 0x5c */
231	SPECIAL, /* 0x5d */	231	SPECIAL, /* 0x5d */
232	SPECIAL, /* 0x5e */	232	SPECIAL, /* 0x5e */
233	SPECIAL, /* 0x5f */	233	SPECIAL, /* 0x5f */
234	SPECIAL, /* 0x60 */	234	SPECIAL, /* 0x60 */
235	SPECIAL, /* 0x61 */	235	SPECIAL, /* 0x61 */
236	SPECIAL, /* 0x62 */	236	SPECIAL, /* 0x62 */
237	SPECIAL, /* 0x63 */	237	SPECIAL, /* 0x63 */
238	SPECIAL, /* 0x64 */	238	SPECIAL, /* 0x64 */
239	SPECIAL, /* 0x65 */	239	SPECIAL, /* 0x65 */
240	SPECIAL, /* 0x66 */	240	SPECIAL, /* 0x66 */
241	SPECIAL, /* 0x67 */	241	SPECIAL, /* 0x67 */
242	SPECIAL, /* 0x68 */	242	SPECIAL, /* 0x68 */
243	SPECIAL, /* 0x69 */	243	SPECIAL, /* 0x69 */
244	SPECIAL, /* 0x6a */	244	SPECIAL, /* 0x6a */
245	SPECIAL, /* 0x6b */	245	SPECIAL, /* 0x6b */
246	SPECIAL, /* 0x6c */	246	SPECIAL, /* 0x6c */
247	SPECIAL, /* 0x6d */	247	SPECIAL, /* 0x6d */
248	SPECIAL, /* 0x6e */	248	SPECIAL, /* 0x6e */
249	SPECIAL, /* 0x6f */	249	SPECIAL, /* 0x6f */
250	SPECIAL, /* 0x70 */	250	SPECIAL, /* 0x70 */
251	SPECIAL, /* 0x71 */	251	SPECIAL, /* 0x71 */
252	SPECIAL, /* 0x72 */	252	SPECIAL, /* 0x72 */
253	SPECIAL, /* 0x73 */	253	SPECIAL, /* 0x73 */
254	SPECIAL, /* 0x74 */	254	SPECIAL, /* 0x74 */
255	SPECIAL, /* 0x75 */	255	SPECIAL, /* 0x75 */
256	SPECIAL, /* 0x76 */	256	SPECIAL, /* 0x76 */
257	SPECIAL, /* 0x77 */	257	SPECIAL, /* 0x77 */
258	SPECIAL, /* 0x78 */	258	SPECIAL, /* 0x78 */
259	SPECIAL, /* 0x79 */	259	SPECIAL, /* 0x79 */
260	SPECIAL, /* 0x7a */	260	SPECIAL, /* 0x7a */
261	SPECIAL, /* 0x7b */	261	SPECIAL, /* 0x7b */
262	SPECIAL, /* 0x7c */	262	SPECIAL, /* 0x7c */
263	SPECIAL, /* 0x7d */	263	SPECIAL, /* 0x7d */
264	SPECIAL, /* 0x7e */	264	SPECIAL, /* 0x7e */
265	SPECIAL, /* 0x7f */	265	SPECIAL, /* 0x7f */
266	};	266	};
267		267
268	static void i8042_interrupt(int n, istate_t *istate);	268	static void i8042_interrupt(int n, istate_t *istate);
269	static void i8042_wait(void);	269	static void i8042_wait(void);
270		270
271	/** Initialize i8042. */	271	/** Initialize i8042. */
272	void i8042_init(void)	272	void i8042_init(void)
273	{	273	{
274	exc_register(VECTOR_KBD, "i8042_interrupt", (iroutine) i8042_interrupt);	274	exc_register(VECTOR_KBD, "i8042_interrupt", (iroutine) i8042_interrupt);
275	i8042_wait();	275	i8042_wait();
276	i8042_command_write(i8042_SET_COMMAND);	276	i8042_command_write(i8042_SET_COMMAND);
277	i8042_wait();	277	i8042_wait();
278	i8042_data_write(i8042_COMMAND);	278	i8042_data_write(i8042_COMMAND);
279	i8042_wait();	279	i8042_wait();
280		280
281	trap_virtual_enable_irqs(1<<IRQ_KBD);	281	trap_virtual_enable_irqs(1<<IRQ_KBD);
282	chardev_initialize("i8042_kbd", &kbrd, &ops);	282	chardev_initialize("i8042_kbd", &kbrd, &ops);
283	stdin = &kbrd;	283	stdin = &kbrd;
-		284	{
-		285	int a=0;
-		286	while(a<20) {i8042_data_read();a++;} /Clear input buffer/
-		287	}
284	}	288	}
285		289
286	/** Process i8042 interrupt.	290	/** Process i8042 interrupt.
287	*	291	*
288	* @param n Interrupt vector.	292	* @param n Interrupt vector.
289	* @param stack Interrupted stack.	293	* @param stack Interrupted stack.
290	*/	294	*/
291	void i8042_interrupt(int n, istate_t *istate)	295	void i8042_interrupt(int n, istate_t *istate)
292	{	296	{
293	__u8 x;	297	__u8 x;
294		298
295	trap_virtual_eoi();	299	trap_virtual_eoi();
296	x = i8042_data_read();	300	x = i8042_data_read();
297	if (x & KEY_RELEASE)	301	if (x & KEY_RELEASE)
298	key_released(x ^ KEY_RELEASE);	302	key_released(x ^ KEY_RELEASE);
299	else	303	else
300	key_pressed(x);	304	key_pressed(x);
301	}	305	}
302		306
303	/** Wait until the controller reads its data. */	307	/** Wait until the controller reads its data. */
304	void i8042_wait(void) {	308	void i8042_wait(void) {
305	while (i8042_status_read() & i8042_WAIT_MASK) {	309	while (i8042_status_read() & i8042_WAIT_MASK) {
306	/* wait */	310	/* wait */
307	}	311	}
308	}	312	}
309		313
310	/** Process release of key.	314	/** Process release of key.
311	*	315	*
312	* @param sc Scancode of the key being released.	316	* @param sc Scancode of the key being released.
313	*/	317	*/
314	void key_released(__u8 sc)	318	void key_released(__u8 sc)
315	{	319	{
316	spinlock_lock(&keylock);	320	spinlock_lock(&keylock);
317	switch (sc) {	321	switch (sc) {
318	case SC_LSHIFT:	322	case SC_LSHIFT:
319	case SC_RSHIFT:	323	case SC_RSHIFT:
320	keyflags &= ~PRESSED_SHIFT;	324	keyflags &= ~PRESSED_SHIFT;
321	break;	325	break;
322	case SC_CAPSLOCK:	326	case SC_CAPSLOCK:
323	keyflags &= ~PRESSED_CAPSLOCK;	327	keyflags &= ~PRESSED_CAPSLOCK;
324	if (lockflags & LOCKED_CAPSLOCK)	328	if (lockflags & LOCKED_CAPSLOCK)
325	lockflags &= ~LOCKED_CAPSLOCK;	329	lockflags &= ~LOCKED_CAPSLOCK;
326	else	330	else
327	lockflags \|= LOCKED_CAPSLOCK;	331	lockflags \|= LOCKED_CAPSLOCK;
328	break;	332	break;
329	default:	333	default:
330	break;	334	break;
331	}	335	}
332	spinlock_unlock(&keylock);	336	spinlock_unlock(&keylock);
333	}	337	}
334		338
335	/** Process keypress.	339	/** Process keypress.
336	*	340	*
337	* @param sc Scancode of the key being pressed.	341	* @param sc Scancode of the key being pressed.
338	*/	342	*/
339	void key_pressed(__u8 sc)	343	void key_pressed(__u8 sc)
340	{	344	{
341	char *map = sc_primary_map;	345	char *map = sc_primary_map;
342	char ascii = sc_primary_map[sc];	346	char ascii = sc_primary_map[sc];
343	bool shift, capslock;	347	bool shift, capslock;
344	bool letter = false;	348	bool letter = false;
345		349
346	spinlock_lock(&keylock);	350	spinlock_lock(&keylock);
347	switch (sc) {	351	switch (sc) {
348	case SC_LSHIFT:	352	case SC_LSHIFT:
349	case SC_RSHIFT:	353	case SC_RSHIFT:
350	keyflags \|= PRESSED_SHIFT;	354	keyflags \|= PRESSED_SHIFT;
351	break;	355	break;
352	case SC_CAPSLOCK:	356	case SC_CAPSLOCK:
353	keyflags \|= PRESSED_CAPSLOCK;	357	keyflags \|= PRESSED_CAPSLOCK;
354	break;	358	break;
355	case SC_SPEC_ESCAPE:	359	case SC_SPEC_ESCAPE:
356	break;	360	break;
357	case SC_LEFTARR:	361	case SC_LEFTARR:
358	chardev_push_character(&kbrd, 0x1b);	362	chardev_push_character(&kbrd, 0x1b);
359	chardev_push_character(&kbrd, 0x5b);	363	chardev_push_character(&kbrd, 0x5b);
360	chardev_push_character(&kbrd, 0x44);	364	chardev_push_character(&kbrd, 0x44);
361	break;	365	break;
362	case SC_RIGHTARR:	366	case SC_RIGHTARR:
363	chardev_push_character(&kbrd, 0x1b);	367	chardev_push_character(&kbrd, 0x1b);
364	chardev_push_character(&kbrd, 0x5b);	368	chardev_push_character(&kbrd, 0x5b);
365	chardev_push_character(&kbrd, 0x43);	369	chardev_push_character(&kbrd, 0x43);
366	break;	370	break;
367	case SC_UPARR:	371	case SC_UPARR:
368	chardev_push_character(&kbrd, 0x1b);	372	chardev_push_character(&kbrd, 0x1b);
369	chardev_push_character(&kbrd, 0x5b);	373	chardev_push_character(&kbrd, 0x5b);
370	chardev_push_character(&kbrd, 0x41);	374	chardev_push_character(&kbrd, 0x41);
371	break;	375	break;
372	case SC_DOWNARR:	376	case SC_DOWNARR:
373	chardev_push_character(&kbrd, 0x1b);	377	chardev_push_character(&kbrd, 0x1b);
374	chardev_push_character(&kbrd, 0x5b);	378	chardev_push_character(&kbrd, 0x5b);
375	chardev_push_character(&kbrd, 0x42);	379	chardev_push_character(&kbrd, 0x42);
376	break;	380	break;
377	case SC_HOME:	381	case SC_HOME:
378	chardev_push_character(&kbrd, 0x1b);	382	chardev_push_character(&kbrd, 0x1b);
379	chardev_push_character(&kbrd, 0x4f);	383	chardev_push_character(&kbrd, 0x4f);
380	chardev_push_character(&kbrd, 0x48);	384	chardev_push_character(&kbrd, 0x48);
381	break;	385	break;
382	case SC_END:	386	case SC_END:
383	chardev_push_character(&kbrd, 0x1b);	387	chardev_push_character(&kbrd, 0x1b);
384	chardev_push_character(&kbrd, 0x4f);	388	chardev_push_character(&kbrd, 0x4f);
385	chardev_push_character(&kbrd, 0x46);	389	chardev_push_character(&kbrd, 0x46);
386	break;	390	break;
387	case SC_DELETE:	391	case SC_DELETE:
388	chardev_push_character(&kbrd, 0x1b);	392	chardev_push_character(&kbrd, 0x1b);
389	chardev_push_character(&kbrd, 0x5b);	393	chardev_push_character(&kbrd, 0x5b);
390	chardev_push_character(&kbrd, 0x33);	394	chardev_push_character(&kbrd, 0x33);
391	chardev_push_character(&kbrd, 0x7e);	395	chardev_push_character(&kbrd, 0x7e);
392	break;	396	break;
393	default:	397	default:
394	letter = is_lower(ascii);	398	letter = is_lower(ascii);
395	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);	399	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
396	shift = keyflags & PRESSED_SHIFT;	400	shift = keyflags & PRESSED_SHIFT;
397	if (letter && capslock)	401	if (letter && capslock)
398	shift = !shift;	402	shift = !shift;
399	if (shift)	403	if (shift)
400	map = sc_secondary_map;	404	map = sc_secondary_map;
401	chardev_push_character(&kbrd, map[sc]);	405	chardev_push_character(&kbrd, map[sc]);
402	break;	406	break;
403	}	407	}
404	spinlock_unlock(&keylock);	408	spinlock_unlock(&keylock);
405	}	409	}
406		410
407	/* Called from getc(). */	411	/* Called from getc(). */
408	void i8042_resume(chardev_t *d)	412	void i8042_resume(chardev_t *d)
409	{	413	{
410	}	414	}
411		415
412	/* Called from getc(). */	416	/* Called from getc(). */
413	void i8042_suspend(chardev_t *d)	417	void i8042_suspend(chardev_t *d)
414	{	418	{
415	}	419	}
416		420
417	static __u8 active_read_buff_read(void)	421	static __u8 active_read_buff_read(void)
418	{	422	{
419	static int i=0;	423	static int i=0;
420	i &= (ACTIVE_READ_BUFF_SIZE-1);	424	i &= (ACTIVE_READ_BUFF_SIZE-1);
421	if(!active_read_buff[i]) {	425	if(!active_read_buff[i]) {
422	return 0;	426	return 0;
423	}	427	}
424	return active_read_buff[i++];	428	return active_read_buff[i++];
425	}	429	}
426		430
427	static void active_read_buff_write(__u8 ch)	431	static void active_read_buff_write(__u8 ch)
428	{	432	{
429	static int i=0;	433	static int i=0;
430	active_read_buff[i] = ch;	434	active_read_buff[i] = ch;
431	i++;	435	i++;
432	i &= (ACTIVE_READ_BUFF_SIZE-1);	436	i &= (ACTIVE_READ_BUFF_SIZE-1);
433	active_read_buff[i]=0;	437	active_read_buff[i]=0;
434	}	438	}
435		439
436		440
437	static void active_read_key_pressed(__u8 sc)	441	static void active_read_key_pressed(__u8 sc)
438	{	442	{
439	char *map = sc_primary_map;	443	char *map = sc_primary_map;
440	char ascii = sc_primary_map[sc];	444	char ascii = sc_primary_map[sc];
441	bool shift, capslock;	445	bool shift, capslock;
442	bool letter = false;	446	bool letter = false;
443		447
444	/spinlock_lock(&keylock);/	448	/spinlock_lock(&keylock);/
445	switch (sc) {	449	switch (sc) {
446	case SC_LSHIFT:	450	case SC_LSHIFT:
447	case SC_RSHIFT:	451	case SC_RSHIFT:
448	keyflags \|= PRESSED_SHIFT;	452	keyflags \|= PRESSED_SHIFT;
449	break;	453	break;
450	case SC_CAPSLOCK:	454	case SC_CAPSLOCK:
451	keyflags \|= PRESSED_CAPSLOCK;	455	keyflags \|= PRESSED_CAPSLOCK;
452	break;	456	break;
453	case SC_SPEC_ESCAPE:	457	case SC_SPEC_ESCAPE:
454	break;	458	break;
455	case SC_LEFTARR:	459	case SC_LEFTARR:
456	active_read_buff_write(0x1b);	460	active_read_buff_write(0x1b);
457	active_read_buff_write(0x5b);	461	active_read_buff_write(0x5b);
458	active_read_buff_write(0x44);	462	active_read_buff_write(0x44);
459	break;	463	break;
460	case SC_RIGHTARR:	464	case SC_RIGHTARR:
461	active_read_buff_write(0x1b);	465	active_read_buff_write(0x1b);
462	active_read_buff_write(0x5b);	466	active_read_buff_write(0x5b);
463	active_read_buff_write(0x43);	467	active_read_buff_write(0x43);
464	break;	468	break;
465	case SC_UPARR:	469	case SC_UPARR:
466	active_read_buff_write(0x1b);	470	active_read_buff_write(0x1b);
467	active_read_buff_write(0x5b);	471	active_read_buff_write(0x5b);
468	active_read_buff_write(0x41);	472	active_read_buff_write(0x41);
469	break;	473	break;
470	case SC_DOWNARR:	474	case SC_DOWNARR:
471	active_read_buff_write(0x1b);	475	active_read_buff_write(0x1b);
472	active_read_buff_write(0x5b);	476	active_read_buff_write(0x5b);
473	active_read_buff_write(0x42);	477	active_read_buff_write(0x42);
474	break;	478	break;
475	case SC_HOME:	479	case SC_HOME:
476	active_read_buff_write(0x1b);	480	active_read_buff_write(0x1b);
477	active_read_buff_write(0x4f);	481	active_read_buff_write(0x4f);
478	active_read_buff_write(0x48);	482	active_read_buff_write(0x48);
479	break;	483	break;
480	case SC_END:	484	case SC_END:
481	active_read_buff_write(0x1b);	485	active_read_buff_write(0x1b);
482	active_read_buff_write(0x4f);	486	active_read_buff_write(0x4f);
483	active_read_buff_write(0x46);	487	active_read_buff_write(0x46);
484	break;	488	break;
485	case SC_DELETE:	489	case SC_DELETE:
486	active_read_buff_write(0x1b);	490	active_read_buff_write(0x1b);
487	active_read_buff_write(0x5b);	491	active_read_buff_write(0x5b);
488	active_read_buff_write(0x33);	492	active_read_buff_write(0x33);
489	active_read_buff_write(0x7e);	493	active_read_buff_write(0x7e);
490	break;	494	break;
491	default:	495	default:
492	letter = is_lower(ascii);	496	letter = is_lower(ascii);
493	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);	497	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
494	shift = keyflags & PRESSED_SHIFT;	498	shift = keyflags & PRESSED_SHIFT;
495	if (letter && capslock)	499	if (letter && capslock)
496	shift = !shift;	500	shift = !shift;

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/genarch/src/i8042/i8042.c – Rev 958 → 1193