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
 
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, void *stack);
 
/** Initialize i8042. */
void i8042_init(void)
{
    exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);
    while (i8042_status_read() & i8042_WAIT_MASK) {
        /* wait */
    }
    i8042_command_write(i8042_SET_COMMAND);
    while (i8042_status_read() & i8042_WAIT_MASK) {
        /* wait */
    }
    i8042_data_write(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 = i8042_data_read();
    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=i8042_status_read() & i8042_BUFFER_FULL_MASK)))
            ;
        x = i8042_data_read();
        if (x & KEY_RELEASE)
            key_released(x ^ KEY_RELEASE);
        else
            active_read_key_pressed(x);
    }
    return ch;
}
 

Rev 893	Rev 894
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 <genarch/i8042/i8042.h>
30	#include <arch/i8259.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	#define i8042_DATA 0x60	-
49	#define i8042_STATUS 0x64	-
50	#define i8042_BUFFER_FULL_MASK 0x01	-
51		-
52	/** Keyboard commands. */	48	/** Keyboard commands. */
53	#define KBD_ENABLE 0xf4	49	#define KBD_ENABLE 0xf4
54	#define KBD_DISABLE 0xf5	50	#define KBD_DISABLE 0xf5
55	#define KBD_ACK 0xfa	51	#define KBD_ACK 0xfa
56		52
57	/*	53	/*
58	* 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
59	* placed in 8042 command register.Format:	55	* placed in 8042 command register.Format:
60	*	56	*
61	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte	57	* \|7\|6\|5\|4\|3\|2\|1\|0\|8042 Command Byte
62	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt	58	* \| \| \| \| \| \| \| `---- 1=enable output register full interrupt
63	* \| \| \| \| \| \| `----- should be 0	59	* \| \| \| \| \| \| `----- should be 0
64	* \| \| \| \| \| `------ 1=set status register system, 0=clear	60	* \| \| \| \| \| `------ 1=set status register system, 0=clear
65	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit	61	* \| \| \| \| `------- 1=override keyboard inhibit, 0=allow inhibit
66	* \| \| \| `-------- disable keyboard I/O by driving clock line low	62	* \| \| \| `-------- disable keyboard I/O by driving clock line low
67	* \| \| `--------- disable auxiliary device, drives clock line low	63	* \| \| `--------- disable auxiliary device, drives clock line low
68	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT	64	* \| `---------- IBM scancode translation 0=AT, 1=PC/XT
69	* `----------- reserved, should be 0	65	* `----------- reserved, should be 0
70	*/	66	*/
71		67
72	#define i8042_SET_COMMAND 0x60	68	#define i8042_SET_COMMAND 0x60
73	#define i8042_COMMAND 0x49	69	#define i8042_COMMAND 0x49
-		70
-		71	#define i8042_BUFFER_FULL_MASK 0x01
74	#define i8042_WAIT_MASK 0x02	72	#define i8042_WAIT_MASK 0x02
75		73
76	#define SPECIAL '?'	74	#define SPECIAL '?'
77	#define KEY_RELEASE 0x80	75	#define KEY_RELEASE 0x80
78		76
79	static void key_released(__u8 sc);	77	static void key_released(__u8 sc);
80	static void key_pressed(__u8 sc);	78	static void key_pressed(__u8 sc);
81	static char key_read(chardev_t *d);	79	static char key_read(chardev_t *d);
82		80
83	#define PRESSED_SHIFT (1<<0)	81	#define PRESSED_SHIFT (1<<0)
84	#define PRESSED_CAPSLOCK (1<<1)	82	#define PRESSED_CAPSLOCK (1<<1)
85	#define LOCKED_CAPSLOCK (1<<0)	83	#define LOCKED_CAPSLOCK (1<<0)
86		84
87	#define ACTIVE_READ_BUFF_SIZE 16 /Must be power of 2/	85	#define ACTIVE_READ_BUFF_SIZE 16 /* Must be power of 2 */
88		86
89	__u8 active_read_buff[ACTIVE_READ_BUFF_SIZE]={0};	87	static __u8 active_read_buff[ACTIVE_READ_BUFF_SIZE];
90		88
91	SPINLOCK_INITIALIZE(keylock); /*< keylock protects keyflags and lockflags. /	89	SPINLOCK_INITIALIZE(keylock); /*< keylock protects keyflags and lockflags. /
92	static volatile int keyflags; /*< Tracking of multiple keypresses. /	90	static volatile int keyflags; /*< Tracking of multiple keypresses. /
93	static volatile int lockflags; /*< Tracking of multiple keys lockings. /	91	static volatile int lockflags; /*< Tracking of multiple keys lockings. /
94		92
95	static void i8042_suspend(chardev_t *);	93	static void i8042_suspend(chardev_t *);
96	static void i8042_resume(chardev_t *);	94	static void i8042_resume(chardev_t *);
97		95
98	static chardev_t kbrd;	96	static chardev_t kbrd;
99	static chardev_operations_t ops = {	97	static chardev_operations_t ops = {
100	.suspend = i8042_suspend,	98	.suspend = i8042_suspend,
101	.resume = i8042_resume,	99	.resume = i8042_resume,
102	.read = key_read	100	.read = key_read
103	};	101	};
104		102
105	/** Primary meaning of scancodes. */	103	/** Primary meaning of scancodes. */
106	static char sc_primary_map[] = {	104	static char sc_primary_map[] = {
107	SPECIAL, /* 0x00 */	105	SPECIAL, /* 0x00 */
108	SPECIAL, /* 0x01 - Esc */	106	SPECIAL, /* 0x01 - Esc */
109	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',	107	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
110	'\b', /* 0x0e - Backspace */	108	'\b', /* 0x0e - Backspace */
111	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',	109	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
112	SPECIAL, /* 0x1d - LCtrl */	110	SPECIAL, /* 0x1d - LCtrl */
113	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',	111	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
114	'`',	112	'`',
115	SPECIAL, /* 0x2a - LShift */	113	SPECIAL, /* 0x2a - LShift */
116	'\\',	114	'\\',
117	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',	115	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
118	SPECIAL, /* 0x36 - RShift */	116	SPECIAL, /* 0x36 - RShift */
119	'*',	117	'*',
120	SPECIAL, /* 0x38 - LAlt */	118	SPECIAL, /* 0x38 - LAlt */
121	' ',	119	' ',
122	SPECIAL, /* 0x3a - CapsLock */	120	SPECIAL, /* 0x3a - CapsLock */
123	SPECIAL, /* 0x3b - F1 */	121	SPECIAL, /* 0x3b - F1 */
124	SPECIAL, /* 0x3c - F2 */	122	SPECIAL, /* 0x3c - F2 */
125	SPECIAL, /* 0x3d - F3 */	123	SPECIAL, /* 0x3d - F3 */
126	SPECIAL, /* 0x3e - F4 */	124	SPECIAL, /* 0x3e - F4 */
127	SPECIAL, /* 0x3f - F5 */	125	SPECIAL, /* 0x3f - F5 */
128	SPECIAL, /* 0x40 - F6 */	126	SPECIAL, /* 0x40 - F6 */
129	SPECIAL, /* 0x41 - F7 */	127	SPECIAL, /* 0x41 - F7 */
130	SPECIAL, /* 0x42 - F8 */	128	SPECIAL, /* 0x42 - F8 */
131	SPECIAL, /* 0x43 - F9 */	129	SPECIAL, /* 0x43 - F9 */
132	SPECIAL, /* 0x44 - F10 */	130	SPECIAL, /* 0x44 - F10 */
133	SPECIAL, /* 0x45 - NumLock */	131	SPECIAL, /* 0x45 - NumLock */
134	SPECIAL, /* 0x46 - ScrollLock */	132	SPECIAL, /* 0x46 - ScrollLock */
135	'7', '8', '9', '-',	133	'7', '8', '9', '-',
136	'4', '5', '6', '+',	134	'4', '5', '6', '+',
137	'1', '2', '3',	135	'1', '2', '3',
138	'0', '.',	136	'0', '.',
139	SPECIAL, /* 0x54 - Alt-SysRq */	137	SPECIAL, /* 0x54 - Alt-SysRq */
140	SPECIAL, /* 0x55 - F11/F12/PF1/FN */	138	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
141	SPECIAL, /* 0x56 - unlabelled key next to LAlt */	139	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
142	SPECIAL, /* 0x57 - F11 */	140	SPECIAL, /* 0x57 - F11 */
143	SPECIAL, /* 0x58 - F12 */	141	SPECIAL, /* 0x58 - F12 */
144	SPECIAL, /* 0x59 */	142	SPECIAL, /* 0x59 */
145	SPECIAL, /* 0x5a */	143	SPECIAL, /* 0x5a */
146	SPECIAL, /* 0x5b */	144	SPECIAL, /* 0x5b */
147	SPECIAL, /* 0x5c */	145	SPECIAL, /* 0x5c */
148	SPECIAL, /* 0x5d */	146	SPECIAL, /* 0x5d */
149	SPECIAL, /* 0x5e */	147	SPECIAL, /* 0x5e */
150	SPECIAL, /* 0x5f */	148	SPECIAL, /* 0x5f */
151	SPECIAL, /* 0x60 */	149	SPECIAL, /* 0x60 */
152	SPECIAL, /* 0x61 */	150	SPECIAL, /* 0x61 */
153	SPECIAL, /* 0x62 */	151	SPECIAL, /* 0x62 */
154	SPECIAL, /* 0x63 */	152	SPECIAL, /* 0x63 */
155	SPECIAL, /* 0x64 */	153	SPECIAL, /* 0x64 */
156	SPECIAL, /* 0x65 */	154	SPECIAL, /* 0x65 */
157	SPECIAL, /* 0x66 */	155	SPECIAL, /* 0x66 */
158	SPECIAL, /* 0x67 */	156	SPECIAL, /* 0x67 */
159	SPECIAL, /* 0x68 */	157	SPECIAL, /* 0x68 */
160	SPECIAL, /* 0x69 */	158	SPECIAL, /* 0x69 */
161	SPECIAL, /* 0x6a */	159	SPECIAL, /* 0x6a */
162	SPECIAL, /* 0x6b */	160	SPECIAL, /* 0x6b */
163	SPECIAL, /* 0x6c */	161	SPECIAL, /* 0x6c */
164	SPECIAL, /* 0x6d */	162	SPECIAL, /* 0x6d */
165	SPECIAL, /* 0x6e */	163	SPECIAL, /* 0x6e */
166	SPECIAL, /* 0x6f */	164	SPECIAL, /* 0x6f */
167	SPECIAL, /* 0x70 */	165	SPECIAL, /* 0x70 */
168	SPECIAL, /* 0x71 */	166	SPECIAL, /* 0x71 */
169	SPECIAL, /* 0x72 */	167	SPECIAL, /* 0x72 */
170	SPECIAL, /* 0x73 */	168	SPECIAL, /* 0x73 */
171	SPECIAL, /* 0x74 */	169	SPECIAL, /* 0x74 */
172	SPECIAL, /* 0x75 */	170	SPECIAL, /* 0x75 */
173	SPECIAL, /* 0x76 */	171	SPECIAL, /* 0x76 */
174	SPECIAL, /* 0x77 */	172	SPECIAL, /* 0x77 */
175	SPECIAL, /* 0x78 */	173	SPECIAL, /* 0x78 */
176	SPECIAL, /* 0x79 */	174	SPECIAL, /* 0x79 */
177	SPECIAL, /* 0x7a */	175	SPECIAL, /* 0x7a */
178	SPECIAL, /* 0x7b */	176	SPECIAL, /* 0x7b */
179	SPECIAL, /* 0x7c */	177	SPECIAL, /* 0x7c */
180	SPECIAL, /* 0x7d */	178	SPECIAL, /* 0x7d */
181	SPECIAL, /* 0x7e */	179	SPECIAL, /* 0x7e */
182	SPECIAL, /* 0x7f */	180	SPECIAL, /* 0x7f */
183	};	181	};
184		182
185	/** Secondary meaning of scancodes. */	183	/** Secondary meaning of scancodes. */
186	static char sc_secondary_map[] = {	184	static char sc_secondary_map[] = {
187	SPECIAL, /* 0x00 */	185	SPECIAL, /* 0x00 */
188	SPECIAL, /* 0x01 - Esc */	186	SPECIAL, /* 0x01 - Esc */
189	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',	187	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
190	SPECIAL, /* 0x0e - Backspace */	188	SPECIAL, /* 0x0e - Backspace */
191	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',	189	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
192	SPECIAL, /* 0x1d - LCtrl */	190	SPECIAL, /* 0x1d - LCtrl */
193	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',	191	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
194	'~',	192	'~',
195	SPECIAL, /* 0x2a - LShift */	193	SPECIAL, /* 0x2a - LShift */
196	'\|',	194	'\|',
197	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',	195	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
198	SPECIAL, /* 0x36 - RShift */	196	SPECIAL, /* 0x36 - RShift */
199	'*',	197	'*',
200	SPECIAL, /* 0x38 - LAlt */	198	SPECIAL, /* 0x38 - LAlt */
201	' ',	199	' ',
202	SPECIAL, /* 0x3a - CapsLock */	200	SPECIAL, /* 0x3a - CapsLock */
203	SPECIAL, /* 0x3b - F1 */	201	SPECIAL, /* 0x3b - F1 */
204	SPECIAL, /* 0x3c - F2 */	202	SPECIAL, /* 0x3c - F2 */
205	SPECIAL, /* 0x3d - F3 */	203	SPECIAL, /* 0x3d - F3 */
206	SPECIAL, /* 0x3e - F4 */	204	SPECIAL, /* 0x3e - F4 */
207	SPECIAL, /* 0x3f - F5 */	205	SPECIAL, /* 0x3f - F5 */
208	SPECIAL, /* 0x40 - F6 */	206	SPECIAL, /* 0x40 - F6 */
209	SPECIAL, /* 0x41 - F7 */	207	SPECIAL, /* 0x41 - F7 */
210	SPECIAL, /* 0x42 - F8 */	208	SPECIAL, /* 0x42 - F8 */
211	SPECIAL, /* 0x43 - F9 */	209	SPECIAL, /* 0x43 - F9 */
212	SPECIAL, /* 0x44 - F10 */	210	SPECIAL, /* 0x44 - F10 */
213	SPECIAL, /* 0x45 - NumLock */	211	SPECIAL, /* 0x45 - NumLock */
214	SPECIAL, /* 0x46 - ScrollLock */	212	SPECIAL, /* 0x46 - ScrollLock */
215	'7', '8', '9', '-',	213	'7', '8', '9', '-',
216	'4', '5', '6', '+',	214	'4', '5', '6', '+',
217	'1', '2', '3',	215	'1', '2', '3',
218	'0', '.',	216	'0', '.',
219	SPECIAL, /* 0x54 - Alt-SysRq */	217	SPECIAL, /* 0x54 - Alt-SysRq */
220	SPECIAL, /* 0x55 - F11/F12/PF1/FN */	218	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
221	SPECIAL, /* 0x56 - unlabelled key next to LAlt */	219	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
222	SPECIAL, /* 0x57 - F11 */	220	SPECIAL, /* 0x57 - F11 */
223	SPECIAL, /* 0x58 - F12 */	221	SPECIAL, /* 0x58 - F12 */
224	SPECIAL, /* 0x59 */	222	SPECIAL, /* 0x59 */
225	SPECIAL, /* 0x5a */	223	SPECIAL, /* 0x5a */
226	SPECIAL, /* 0x5b */	224	SPECIAL, /* 0x5b */
227	SPECIAL, /* 0x5c */	225	SPECIAL, /* 0x5c */
228	SPECIAL, /* 0x5d */	226	SPECIAL, /* 0x5d */
229	SPECIAL, /* 0x5e */	227	SPECIAL, /* 0x5e */
230	SPECIAL, /* 0x5f */	228	SPECIAL, /* 0x5f */
231	SPECIAL, /* 0x60 */	229	SPECIAL, /* 0x60 */
232	SPECIAL, /* 0x61 */	230	SPECIAL, /* 0x61 */
233	SPECIAL, /* 0x62 */	231	SPECIAL, /* 0x62 */
234	SPECIAL, /* 0x63 */	232	SPECIAL, /* 0x63 */
235	SPECIAL, /* 0x64 */	233	SPECIAL, /* 0x64 */
236	SPECIAL, /* 0x65 */	234	SPECIAL, /* 0x65 */
237	SPECIAL, /* 0x66 */	235	SPECIAL, /* 0x66 */
238	SPECIAL, /* 0x67 */	236	SPECIAL, /* 0x67 */
239	SPECIAL, /* 0x68 */	237	SPECIAL, /* 0x68 */
240	SPECIAL, /* 0x69 */	238	SPECIAL, /* 0x69 */
241	SPECIAL, /* 0x6a */	239	SPECIAL, /* 0x6a */
242	SPECIAL, /* 0x6b */	240	SPECIAL, /* 0x6b */
243	SPECIAL, /* 0x6c */	241	SPECIAL, /* 0x6c */
244	SPECIAL, /* 0x6d */	242	SPECIAL, /* 0x6d */
245	SPECIAL, /* 0x6e */	243	SPECIAL, /* 0x6e */
246	SPECIAL, /* 0x6f */	244	SPECIAL, /* 0x6f */
247	SPECIAL, /* 0x70 */	245	SPECIAL, /* 0x70 */
248	SPECIAL, /* 0x71 */	246	SPECIAL, /* 0x71 */
249	SPECIAL, /* 0x72 */	247	SPECIAL, /* 0x72 */
250	SPECIAL, /* 0x73 */	248	SPECIAL, /* 0x73 */
251	SPECIAL, /* 0x74 */	249	SPECIAL, /* 0x74 */
252	SPECIAL, /* 0x75 */	250	SPECIAL, /* 0x75 */
253	SPECIAL, /* 0x76 */	251	SPECIAL, /* 0x76 */
254	SPECIAL, /* 0x77 */	252	SPECIAL, /* 0x77 */
255	SPECIAL, /* 0x78 */	253	SPECIAL, /* 0x78 */
256	SPECIAL, /* 0x79 */	254	SPECIAL, /* 0x79 */
257	SPECIAL, /* 0x7a */	255	SPECIAL, /* 0x7a */
258	SPECIAL, /* 0x7b */	256	SPECIAL, /* 0x7b */
259	SPECIAL, /* 0x7c */	257	SPECIAL, /* 0x7c */
260	SPECIAL, /* 0x7d */	258	SPECIAL, /* 0x7d */
261	SPECIAL, /* 0x7e */	259	SPECIAL, /* 0x7e */
262	SPECIAL, /* 0x7f */	260	SPECIAL, /* 0x7f */
263	};	261	};
264		262
265	static void i8042_interrupt(int n, void *stack);	263	static void i8042_interrupt(int n, void *stack);
266		264
267	/** Initialize i8042. */	265	/** Initialize i8042. */
268	void i8042_init(void)	266	void i8042_init(void)
269	{	267	{
270	exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);	268	exc_register(VECTOR_KBD, "i8042_interrupt", i8042_interrupt);
271	while (inb(i8042_STATUS)&i8042_WAIT_MASK) {	269	while (i8042_status_read() & i8042_WAIT_MASK) {
272	/* wait */	270	/* wait */
273	}	271	}
274	outb(i8042_STATUS,i8042_SET_COMMAND);	272	i8042_command_write(i8042_SET_COMMAND);
275	while (inb(i8042_STATUS)&i8042_WAIT_MASK) {	273	while (i8042_status_read() & i8042_WAIT_MASK) {
276	/* wait */	274	/* wait */
277	}	275	}
278	outb(i8042_DATA,i8042_COMMAND);	276	i8042_data_write(i8042_COMMAND);
279		277
280	trap_virtual_enable_irqs(1<<IRQ_KBD);	278	trap_virtual_enable_irqs(1<<IRQ_KBD);
281	chardev_initialize("i8042_kbd", &kbrd, &ops);	279	chardev_initialize("i8042_kbd", &kbrd, &ops);
282	stdin = &kbrd;	280	stdin = &kbrd;
283	}	281	}
284		282
285	/** Process i8042 interrupt.	283	/** Process i8042 interrupt.
286	*	284	*
287	* @param n Interrupt vector.	285	* @param n Interrupt vector.
288	* @param stack Interrupted stack.	286	* @param stack Interrupted stack.
289	*/	287	*/
290	void i8042_interrupt(int n, void *stack)	288	void i8042_interrupt(int n, void *stack)
291	{	289	{
292	__u8 x;	290	__u8 x;
293		291
294	trap_virtual_eoi();	292	trap_virtual_eoi();
295	x = inb(i8042_DATA);	293	x = i8042_data_read();
296	if (x & KEY_RELEASE)	294	if (x & KEY_RELEASE)
297	key_released(x ^ KEY_RELEASE);	295	key_released(x ^ KEY_RELEASE);
298	else	296	else
299	key_pressed(x);	297	key_pressed(x);
300	}	298	}
301		299
302	/** Process release of key.	300	/** Process release of key.
303	*	301	*
304	* @param sc Scancode of the key being released.	302	* @param sc Scancode of the key being released.
305	*/	303	*/
306	void key_released(__u8 sc)	304	void key_released(__u8 sc)
307	{	305	{
308	spinlock_lock(&keylock);	306	spinlock_lock(&keylock);
309	switch (sc) {	307	switch (sc) {
310	case SC_LSHIFT:	308	case SC_LSHIFT:
311	case SC_RSHIFT:	309	case SC_RSHIFT:
312	keyflags &= ~PRESSED_SHIFT;	310	keyflags &= ~PRESSED_SHIFT;
313	break;	311	break;
314	case SC_CAPSLOCK:	312	case SC_CAPSLOCK:
315	keyflags &= ~PRESSED_CAPSLOCK;	313	keyflags &= ~PRESSED_CAPSLOCK;
316	if (lockflags & LOCKED_CAPSLOCK)	314	if (lockflags & LOCKED_CAPSLOCK)
317	lockflags &= ~LOCKED_CAPSLOCK;	315	lockflags &= ~LOCKED_CAPSLOCK;
318	else	316	else
319	lockflags \|= LOCKED_CAPSLOCK;	317	lockflags \|= LOCKED_CAPSLOCK;
320	break;	318	break;
321	default:	319	default:
322	break;	320	break;
323	}	321	}
324	spinlock_unlock(&keylock);	322	spinlock_unlock(&keylock);
325	}	323	}
326		324
327	/** Process keypress.	325	/** Process keypress.
328	*	326	*
329	* @param sc Scancode of the key being pressed.	327	* @param sc Scancode of the key being pressed.
330	*/	328	*/
331	void key_pressed(__u8 sc)	329	void key_pressed(__u8 sc)
332	{	330	{
333	char *map = sc_primary_map;	331	char *map = sc_primary_map;
334	char ascii = sc_primary_map[sc];	332	char ascii = sc_primary_map[sc];
335	bool shift, capslock;	333	bool shift, capslock;
336	bool letter = false;	334	bool letter = false;
337		335
338	spinlock_lock(&keylock);	336	spinlock_lock(&keylock);
339	switch (sc) {	337	switch (sc) {
340	case SC_LSHIFT:	338	case SC_LSHIFT:
341	case SC_RSHIFT:	339	case SC_RSHIFT:
342	keyflags \|= PRESSED_SHIFT;	340	keyflags \|= PRESSED_SHIFT;
343	break;	341	break;
344	case SC_CAPSLOCK:	342	case SC_CAPSLOCK:
345	keyflags \|= PRESSED_CAPSLOCK;	343	keyflags \|= PRESSED_CAPSLOCK;
346	break;	344	break;
347	case SC_SPEC_ESCAPE:	345	case SC_SPEC_ESCAPE:
348	break;	346	break;
349	case SC_LEFTARR:	347	case SC_LEFTARR:
350	chardev_push_character(&kbrd, 0x1b);	348	chardev_push_character(&kbrd, 0x1b);
351	chardev_push_character(&kbrd, 0x5b);	349	chardev_push_character(&kbrd, 0x5b);
352	chardev_push_character(&kbrd, 0x44);	350	chardev_push_character(&kbrd, 0x44);
353	break;	351	break;
354	case SC_RIGHTARR:	352	case SC_RIGHTARR:
355	chardev_push_character(&kbrd, 0x1b);	353	chardev_push_character(&kbrd, 0x1b);
356	chardev_push_character(&kbrd, 0x5b);	354	chardev_push_character(&kbrd, 0x5b);
357	chardev_push_character(&kbrd, 0x43);	355	chardev_push_character(&kbrd, 0x43);
358	break;	356	break;
359	case SC_UPARR:	357	case SC_UPARR:
360	chardev_push_character(&kbrd, 0x1b);	358	chardev_push_character(&kbrd, 0x1b);
361	chardev_push_character(&kbrd, 0x5b);	359	chardev_push_character(&kbrd, 0x5b);
362	chardev_push_character(&kbrd, 0x41);	360	chardev_push_character(&kbrd, 0x41);
363	break;	361	break;
364	case SC_DOWNARR:	362	case SC_DOWNARR:
365	chardev_push_character(&kbrd, 0x1b);	363	chardev_push_character(&kbrd, 0x1b);
366	chardev_push_character(&kbrd, 0x5b);	364	chardev_push_character(&kbrd, 0x5b);
367	chardev_push_character(&kbrd, 0x42);	365	chardev_push_character(&kbrd, 0x42);
368	break;	366	break;
369	case SC_HOME:	367	case SC_HOME:
370	chardev_push_character(&kbrd, 0x1b);	368	chardev_push_character(&kbrd, 0x1b);
371	chardev_push_character(&kbrd, 0x4f);	369	chardev_push_character(&kbrd, 0x4f);
372	chardev_push_character(&kbrd, 0x48);	370	chardev_push_character(&kbrd, 0x48);
373	break;	371	break;
374	case SC_END:	372	case SC_END:
375	chardev_push_character(&kbrd, 0x1b);	373	chardev_push_character(&kbrd, 0x1b);
376	chardev_push_character(&kbrd, 0x4f);	374	chardev_push_character(&kbrd, 0x4f);
377	chardev_push_character(&kbrd, 0x46);	375	chardev_push_character(&kbrd, 0x46);
378	break;	376	break;
379	case SC_DELETE:	377	case SC_DELETE:
380	chardev_push_character(&kbrd, 0x1b);	378	chardev_push_character(&kbrd, 0x1b);
381	chardev_push_character(&kbrd, 0x5b);	379	chardev_push_character(&kbrd, 0x5b);
382	chardev_push_character(&kbrd, 0x33);	380	chardev_push_character(&kbrd, 0x33);
383	chardev_push_character(&kbrd, 0x7e);	381	chardev_push_character(&kbrd, 0x7e);
384	break;	382	break;
385	default:	383	default:
386	letter = is_lower(ascii);	384	letter = is_lower(ascii);
387	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);	385	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
388	shift = keyflags & PRESSED_SHIFT;	386	shift = keyflags & PRESSED_SHIFT;
389	if (letter && capslock)	387	if (letter && capslock)
390	shift = !shift;	388	shift = !shift;
391	if (shift)	389	if (shift)
392	map = sc_secondary_map;	390	map = sc_secondary_map;
393	chardev_push_character(&kbrd, map[sc]);	391	chardev_push_character(&kbrd, map[sc]);
394	break;	392	break;
395	}	393	}
396	spinlock_unlock(&keylock);	394	spinlock_unlock(&keylock);
397	}	395	}
398		396
399	/* Called from getc(). */	397	/* Called from getc(). */
400	void i8042_resume(chardev_t *d)	398	void i8042_resume(chardev_t *d)
401	{	399	{
402	}	400	}
403		401
404	/* Called from getc(). */	402	/* Called from getc(). */
405	void i8042_suspend(chardev_t *d)	403	void i8042_suspend(chardev_t *d)
406	{	404	{
407	}	405	}
408		406
409	static __u8 active_read_buff_read(void)	407	static __u8 active_read_buff_read(void)
410	{	408	{
411	static int i=0;	409	static int i=0;
412	i&=(ACTIVE_READ_BUFF_SIZE-1);	410	i &= (ACTIVE_READ_BUFF_SIZE-1);
413	if(!active_read_buff[i])	411	if(!active_read_buff[i]) {
414	{	-
415	return 0;	412	return 0;
416	}	413	}
417	return active_read_buff[i++];	414	return active_read_buff[i++];
418	}	415	}
419		416
420	static void active_read_buff_write(__u8 ch)	417	static void active_read_buff_write(__u8 ch)
421	{	418	{
422	static int i=0;	419	static int i=0;
423	active_read_buff[i]=ch;	420	active_read_buff[i] = ch;
424	i++;	421	i++;
425	i&=(ACTIVE_READ_BUFF_SIZE-1);	422	i &= (ACTIVE_READ_BUFF_SIZE-1);
426	active_read_buff[i]=0;	423	active_read_buff[i]=0;
427	}	424	}
428		425
429		426
430	static void active_read_key_pressed(__u8 sc)	427	static void active_read_key_pressed(__u8 sc)
431	{	428	{
432	char *map = sc_primary_map;	429	char *map = sc_primary_map;
433	char ascii = sc_primary_map[sc];	430	char ascii = sc_primary_map[sc];
434	bool shift, capslock;	431	bool shift, capslock;
435	bool letter = false;	432	bool letter = false;
436		433
437	/spinlock_lock(&keylock);/	434	/spinlock_lock(&keylock);/
438	switch (sc) {	435	switch (sc) {
439	case SC_LSHIFT:	436	case SC_LSHIFT:
440	case SC_RSHIFT:	437	case SC_RSHIFT:
441	keyflags \|= PRESSED_SHIFT;	438	keyflags \|= PRESSED_SHIFT;
442	break;	439	break;
443	case SC_CAPSLOCK:	440	case SC_CAPSLOCK:
444	keyflags \|= PRESSED_CAPSLOCK;	441	keyflags \|= PRESSED_CAPSLOCK;
445	break;	442	break;
446	case SC_SPEC_ESCAPE:	443	case SC_SPEC_ESCAPE:
447	break;	444	break;
448	case SC_LEFTARR:	445	case SC_LEFTARR:
449	active_read_buff_write(0x1b);	446	active_read_buff_write(0x1b);
450	active_read_buff_write(0x5b);	447	active_read_buff_write(0x5b);
451	active_read_buff_write(0x44);	448	active_read_buff_write(0x44);
452	break;	449	break;
453	case SC_RIGHTARR:	450	case SC_RIGHTARR:
454	active_read_buff_write(0x1b);	451	active_read_buff_write(0x1b);
455	active_read_buff_write(0x5b);	452	active_read_buff_write(0x5b);
456	active_read_buff_write(0x43);	453	active_read_buff_write(0x43);
457	break;	454	break;
458	case SC_UPARR:	455	case SC_UPARR:
459	active_read_buff_write(0x1b);	456	active_read_buff_write(0x1b);
460	active_read_buff_write(0x5b);	457	active_read_buff_write(0x5b);
461	active_read_buff_write(0x41);	458	active_read_buff_write(0x41);
462	break;	459	break;
463	case SC_DOWNARR:	460	case SC_DOWNARR:
464	active_read_buff_write(0x1b);	461	active_read_buff_write(0x1b);
465	active_read_buff_write(0x5b);	462	active_read_buff_write(0x5b);
466	active_read_buff_write(0x42);	463	active_read_buff_write(0x42);
467	break;	464	break;
468	case SC_HOME:	465	case SC_HOME:
469	active_read_buff_write(0x1b);	466	active_read_buff_write(0x1b);
470	active_read_buff_write(0x4f);	467	active_read_buff_write(0x4f);
471	active_read_buff_write(0x48);	468	active_read_buff_write(0x48);
472	break;	469	break;
473	case SC_END:	470	case SC_END:
474	active_read_buff_write(0x1b);	471	active_read_buff_write(0x1b);
475	active_read_buff_write(0x4f);	472	active_read_buff_write(0x4f);
476	active_read_buff_write(0x46);	473	active_read_buff_write(0x46);
477	break;	474	break;
478	case SC_DELETE:	475	case SC_DELETE:
479	active_read_buff_write(0x1b);	476	active_read_buff_write(0x1b);
480	active_read_buff_write(0x5b);	477	active_read_buff_write(0x5b);
481	active_read_buff_write(0x33);	478	active_read_buff_write(0x33);
482	active_read_buff_write(0x7e);	479	active_read_buff_write(0x7e);
483	break;	480	break;
484	default:	481	default:
485	letter = is_lower(ascii);	482	letter = is_lower(ascii);
486	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);	483	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
487	shift = keyflags & PRESSED_SHIFT;	484	shift = keyflags & PRESSED_SHIFT;
488	if (letter && capslock)	485	if (letter && capslock)
489	shift = !shift;	486	shift = !shift;
490	if (shift)	487	if (shift)
491	map = sc_secondary_map;	488	map = sc_secondary_map;
492	active_read_buff_write(map[sc]);	489	active_read_buff_write(map[sc]);
493	break;	490	break;
494	}	491	}
495	/spinlock_unlock(&keylock);/	492	/spinlock_unlock(&keylock);/
496		493
497	}	494	}
498		495

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(root)/kernel/trunk/genarch/src/i8042/i8042.c – Rev 893 → 894