WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ia32/src/drivers/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>
 
/**
 * i8042 processor driver.
 * It takes care of low-level keyboard functions.
 */
 
#define i8042_DATA      0x60
#define i8042_STATUS        0x64
 
/** Keyboard commands. */
#define KBD_ENABLE  0xf4
#define KBD_DISABLE 0xf5
#define KBD_ACK     0xfa
 
#define SPECIAL     '?'
#define KEY_RELEASE 0x80
 
static void key_released(__u8 sc);
static void key_pressed(__u8 sc);
 
#define PRESSED_SHIFT       (1<<0)
#define PRESSED_CAPSLOCK    (1<<1)
#define LOCKED_CAPSLOCK     (1<<0)
 
static spinlock_t 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(void);
static void i8042_resume(void);
 
static chardev_t kbrd;
static chardev_operations_t ops = {
    .suspend = i8042_suspend,
    .resume = i8042_resume
};
 
/** Primary meaning of scancodes. */
static char sc_primary_map[] = {
    SPECIAL, /* 0x00 */
    SPECIAL, /* 0x01 - Esc */
    '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
    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 */
};
 
/** 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 */
};
 
/** Initialize i8042. */
void i8042_init(void)
{
    trap_register(VECTOR_KBD, i8042_interrupt);
    trap_virtual_enable_irqs(1<<IRQ_KBD);
    spinlock_initialize(&keylock, "i8042_lock");
    chardev_initialize(&kbrd, &ops);
    stdin = &kbrd;
}
 
/** Process i8042 interrupt.
 *
 * @param n Interrupt vector.
 * @param stack Interrupted stack.
 */
void i8042_interrupt(__u8 n, __native 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;
        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(void)
{
}
 
/* Called from getc(). */
void i8042_suspend(void)
{
}
 

Rev 534	Rev 552
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		41
42	/**	42	/**
43	* i8042 processor driver.	43	* i8042 processor driver.
44	* It takes care of low-level keyboard functions.	44	* It takes care of low-level keyboard functions.
45	*/	45	*/
46		46
47	#define i8042_DATA 0x60	47	#define i8042_DATA 0x60
48	#define i8042_STATUS 0x64	48	#define i8042_STATUS 0x64
49		49
50	/** Keyboard commands. */	50	/** Keyboard commands. */
51	#define KBD_ENABLE 0xf4	51	#define KBD_ENABLE 0xf4
52	#define KBD_DISABLE 0xf5	52	#define KBD_DISABLE 0xf5
53	#define KBD_ACK 0xfa	53	#define KBD_ACK 0xfa
54		54
55	#define SPECIAL '?'	55	#define SPECIAL '?'
56	#define KEY_RELEASE 0x80	56	#define KEY_RELEASE 0x80
57		57
58	static void key_released(__u8 sc);	58	static void key_released(__u8 sc);
59	static void key_pressed(__u8 sc);	59	static void key_pressed(__u8 sc);
60		60
61	#define PRESSED_SHIFT (1<<0)	61	#define PRESSED_SHIFT (1<<0)
62	#define PRESSED_CAPSLOCK (1<<1)	62	#define PRESSED_CAPSLOCK (1<<1)
63	#define LOCKED_CAPSLOCK (1<<0)	63	#define LOCKED_CAPSLOCK (1<<0)
64		64
65	static spinlock_t keylock; /*< keylock protects keyflags and lockflags. /	65	static spinlock_t keylock; /*< keylock protects keyflags and lockflags. /
66	static volatile int keyflags; /*< Tracking of multiple keypresses. /	66	static volatile int keyflags; /*< Tracking of multiple keypresses. /
67	static volatile int lockflags; /*< Tracking of multiple keys lockings. /	67	static volatile int lockflags; /*< Tracking of multiple keys lockings. /
68		68
69	static void i8042_suspend(void);	69	static void i8042_suspend(void);
70	static void i8042_resume(void);	70	static void i8042_resume(void);
71		71
72	static chardev_t kbrd;	72	static chardev_t kbrd;
73	static chardev_operations_t ops = {	73	static chardev_operations_t ops = {
74	.suspend = i8042_suspend,	74	.suspend = i8042_suspend,
75	.resume = i8042_resume	75	.resume = i8042_resume
76	};	76	};
77		77
78	/** Primary meaning of scancodes. */	78	/** Primary meaning of scancodes. */
79	static char sc_primary_map[] = {	79	static char sc_primary_map[] = {
80	SPECIAL, /* 0x00 */	80	SPECIAL, /* 0x00 */
81	SPECIAL, /* 0x01 - Esc */	81	SPECIAL, /* 0x01 - Esc */
82	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',	82	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
83	SPECIAL, /* 0x0e - Backspace */	83	SPECIAL, /* 0x0e - Backspace */
84	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',	84	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
85	SPECIAL, /* 0x1d - LCtrl */	85	SPECIAL, /* 0x1d - LCtrl */
86	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',	86	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
87	'`',	87	'`',
88	SPECIAL, /* 0x2a - LShift */	88	SPECIAL, /* 0x2a - LShift */
89	'\\',	89	'\\',
90	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',	90	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
91	SPECIAL, /* 0x36 - RShift */	91	SPECIAL, /* 0x36 - RShift */
92	'*',	92	'*',
93	SPECIAL, /* 0x38 - LAlt */	93	SPECIAL, /* 0x38 - LAlt */
94	' ',	94	' ',
95	SPECIAL, /* 0x3a - CapsLock */	95	SPECIAL, /* 0x3a - CapsLock */
96	SPECIAL, /* 0x3b - F1 */	96	SPECIAL, /* 0x3b - F1 */
97	SPECIAL, /* 0x3c - F2 */	97	SPECIAL, /* 0x3c - F2 */
98	SPECIAL, /* 0x3d - F3 */	98	SPECIAL, /* 0x3d - F3 */
99	SPECIAL, /* 0x3e - F4 */	99	SPECIAL, /* 0x3e - F4 */
100	SPECIAL, /* 0x3f - F5 */	100	SPECIAL, /* 0x3f - F5 */
101	SPECIAL, /* 0x40 - F6 */	101	SPECIAL, /* 0x40 - F6 */
102	SPECIAL, /* 0x41 - F7 */	102	SPECIAL, /* 0x41 - F7 */
103	SPECIAL, /* 0x42 - F8 */	103	SPECIAL, /* 0x42 - F8 */
104	SPECIAL, /* 0x43 - F9 */	104	SPECIAL, /* 0x43 - F9 */
105	SPECIAL, /* 0x44 - F10 */	105	SPECIAL, /* 0x44 - F10 */
106	SPECIAL, /* 0x45 - NumLock */	106	SPECIAL, /* 0x45 - NumLock */
107	SPECIAL, /* 0x46 - ScrollLock */	107	SPECIAL, /* 0x46 - ScrollLock */
108	'7', '8', '9', '-',	108	'7', '8', '9', '-',
109	'4', '5', '6', '+',	109	'4', '5', '6', '+',
110	'1', '2', '3',	110	'1', '2', '3',
111	'0', '.',	111	'0', '.',
112	SPECIAL, /* 0x54 - Alt-SysRq */	112	SPECIAL, /* 0x54 - Alt-SysRq */
113	SPECIAL, /* 0x55 - F11/F12/PF1/FN */	113	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
114	SPECIAL, /* 0x56 - unlabelled key next to LAlt */	114	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
115	SPECIAL, /* 0x57 - F11 */	115	SPECIAL, /* 0x57 - F11 */
116	SPECIAL, /* 0x58 - F12 */	116	SPECIAL, /* 0x58 - F12 */
117	SPECIAL, /* 0x59 */	117	SPECIAL, /* 0x59 */
118	SPECIAL, /* 0x5a */	118	SPECIAL, /* 0x5a */
119	SPECIAL, /* 0x5b */	119	SPECIAL, /* 0x5b */
120	SPECIAL, /* 0x5c */	120	SPECIAL, /* 0x5c */
121	SPECIAL, /* 0x5d */	121	SPECIAL, /* 0x5d */
122	SPECIAL, /* 0x5e */	122	SPECIAL, /* 0x5e */
123	SPECIAL, /* 0x5f */	123	SPECIAL, /* 0x5f */
124	SPECIAL, /* 0x60 */	124	SPECIAL, /* 0x60 */
125	SPECIAL, /* 0x61 */	125	SPECIAL, /* 0x61 */
126	SPECIAL, /* 0x62 */	126	SPECIAL, /* 0x62 */
127	SPECIAL, /* 0x63 */	127	SPECIAL, /* 0x63 */
128	SPECIAL, /* 0x64 */	128	SPECIAL, /* 0x64 */
129	SPECIAL, /* 0x65 */	129	SPECIAL, /* 0x65 */
130	SPECIAL, /* 0x66 */	130	SPECIAL, /* 0x66 */
131	SPECIAL, /* 0x67 */	131	SPECIAL, /* 0x67 */
132	SPECIAL, /* 0x68 */	132	SPECIAL, /* 0x68 */
133	SPECIAL, /* 0x69 */	133	SPECIAL, /* 0x69 */
134	SPECIAL, /* 0x6a */	134	SPECIAL, /* 0x6a */
135	SPECIAL, /* 0x6b */	135	SPECIAL, /* 0x6b */
136	SPECIAL, /* 0x6c */	136	SPECIAL, /* 0x6c */
137	SPECIAL, /* 0x6d */	137	SPECIAL, /* 0x6d */
138	SPECIAL, /* 0x6e */	138	SPECIAL, /* 0x6e */
139	SPECIAL, /* 0x6f */	139	SPECIAL, /* 0x6f */
140	SPECIAL, /* 0x70 */	140	SPECIAL, /* 0x70 */
141	SPECIAL, /* 0x71 */	141	SPECIAL, /* 0x71 */
142	SPECIAL, /* 0x72 */	142	SPECIAL, /* 0x72 */
143	SPECIAL, /* 0x73 */	143	SPECIAL, /* 0x73 */
144	SPECIAL, /* 0x74 */	144	SPECIAL, /* 0x74 */
145	SPECIAL, /* 0x75 */	145	SPECIAL, /* 0x75 */
146	SPECIAL, /* 0x76 */	146	SPECIAL, /* 0x76 */
147	SPECIAL, /* 0x77 */	147	SPECIAL, /* 0x77 */
148	SPECIAL, /* 0x78 */	148	SPECIAL, /* 0x78 */
149	SPECIAL, /* 0x79 */	149	SPECIAL, /* 0x79 */
150	SPECIAL, /* 0x7a */	150	SPECIAL, /* 0x7a */
151	SPECIAL, /* 0x7b */	151	SPECIAL, /* 0x7b */
152	SPECIAL, /* 0x7c */	152	SPECIAL, /* 0x7c */
153	SPECIAL, /* 0x7d */	153	SPECIAL, /* 0x7d */
154	SPECIAL, /* 0x7e */	154	SPECIAL, /* 0x7e */
155	SPECIAL, /* 0x7f */	155	SPECIAL, /* 0x7f */
156	};	156	};
157		157
158	/** Secondary meaning of scancodes. */	158	/** Secondary meaning of scancodes. */
159	static char sc_secondary_map[] = {	159	static char sc_secondary_map[] = {
160	SPECIAL, /* 0x00 */	160	SPECIAL, /* 0x00 */
161	SPECIAL, /* 0x01 - Esc */	161	SPECIAL, /* 0x01 - Esc */
162	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',	162	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
163	SPECIAL, /* 0x0e - Backspace */	163	SPECIAL, /* 0x0e - Backspace */
164	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',	164	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
165	SPECIAL, /* 0x1d - LCtrl */	165	SPECIAL, /* 0x1d - LCtrl */
166	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',	166	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
167	'~',	167	'~',
168	SPECIAL, /* 0x2a - LShift */	168	SPECIAL, /* 0x2a - LShift */
169	'\|',	169	'\|',
170	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',	170	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
171	SPECIAL, /* 0x36 - RShift */	171	SPECIAL, /* 0x36 - RShift */
172	'*',	172	'*',
173	SPECIAL, /* 0x38 - LAlt */	173	SPECIAL, /* 0x38 - LAlt */
174	' ',	174	' ',
175	SPECIAL, /* 0x3a - CapsLock */	175	SPECIAL, /* 0x3a - CapsLock */
176	SPECIAL, /* 0x3b - F1 */	176	SPECIAL, /* 0x3b - F1 */
177	SPECIAL, /* 0x3c - F2 */	177	SPECIAL, /* 0x3c - F2 */
178	SPECIAL, /* 0x3d - F3 */	178	SPECIAL, /* 0x3d - F3 */
179	SPECIAL, /* 0x3e - F4 */	179	SPECIAL, /* 0x3e - F4 */
180	SPECIAL, /* 0x3f - F5 */	180	SPECIAL, /* 0x3f - F5 */
181	SPECIAL, /* 0x40 - F6 */	181	SPECIAL, /* 0x40 - F6 */
182	SPECIAL, /* 0x41 - F7 */	182	SPECIAL, /* 0x41 - F7 */
183	SPECIAL, /* 0x42 - F8 */	183	SPECIAL, /* 0x42 - F8 */
184	SPECIAL, /* 0x43 - F9 */	184	SPECIAL, /* 0x43 - F9 */
185	SPECIAL, /* 0x44 - F10 */	185	SPECIAL, /* 0x44 - F10 */
186	SPECIAL, /* 0x45 - NumLock */	186	SPECIAL, /* 0x45 - NumLock */
187	SPECIAL, /* 0x46 - ScrollLock */	187	SPECIAL, /* 0x46 - ScrollLock */
188	'7', '8', '9', '-',	188	'7', '8', '9', '-',
189	'4', '5', '6', '+',	189	'4', '5', '6', '+',
190	'1', '2', '3',	190	'1', '2', '3',
191	'0', '.',	191	'0', '.',
192	SPECIAL, /* 0x54 - Alt-SysRq */	192	SPECIAL, /* 0x54 - Alt-SysRq */
193	SPECIAL, /* 0x55 - F11/F12/PF1/FN */	193	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
194	SPECIAL, /* 0x56 - unlabelled key next to LAlt */	194	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
195	SPECIAL, /* 0x57 - F11 */	195	SPECIAL, /* 0x57 - F11 */
196	SPECIAL, /* 0x58 - F12 */	196	SPECIAL, /* 0x58 - F12 */
197	SPECIAL, /* 0x59 */	197	SPECIAL, /* 0x59 */
198	SPECIAL, /* 0x5a */	198	SPECIAL, /* 0x5a */
199	SPECIAL, /* 0x5b */	199	SPECIAL, /* 0x5b */
200	SPECIAL, /* 0x5c */	200	SPECIAL, /* 0x5c */
201	SPECIAL, /* 0x5d */	201	SPECIAL, /* 0x5d */
202	SPECIAL, /* 0x5e */	202	SPECIAL, /* 0x5e */
203	SPECIAL, /* 0x5f */	203	SPECIAL, /* 0x5f */
204	SPECIAL, /* 0x60 */	204	SPECIAL, /* 0x60 */
205	SPECIAL, /* 0x61 */	205	SPECIAL, /* 0x61 */
206	SPECIAL, /* 0x62 */	206	SPECIAL, /* 0x62 */
207	SPECIAL, /* 0x63 */	207	SPECIAL, /* 0x63 */
208	SPECIAL, /* 0x64 */	208	SPECIAL, /* 0x64 */
209	SPECIAL, /* 0x65 */	209	SPECIAL, /* 0x65 */
210	SPECIAL, /* 0x66 */	210	SPECIAL, /* 0x66 */
211	SPECIAL, /* 0x67 */	211	SPECIAL, /* 0x67 */
212	SPECIAL, /* 0x68 */	212	SPECIAL, /* 0x68 */
213	SPECIAL, /* 0x69 */	213	SPECIAL, /* 0x69 */
214	SPECIAL, /* 0x6a */	214	SPECIAL, /* 0x6a */
215	SPECIAL, /* 0x6b */	215	SPECIAL, /* 0x6b */
216	SPECIAL, /* 0x6c */	216	SPECIAL, /* 0x6c */
217	SPECIAL, /* 0x6d */	217	SPECIAL, /* 0x6d */
218	SPECIAL, /* 0x6e */	218	SPECIAL, /* 0x6e */
219	SPECIAL, /* 0x6f */	219	SPECIAL, /* 0x6f */
220	SPECIAL, /* 0x70 */	220	SPECIAL, /* 0x70 */
221	SPECIAL, /* 0x71 */	221	SPECIAL, /* 0x71 */
222	SPECIAL, /* 0x72 */	222	SPECIAL, /* 0x72 */
223	SPECIAL, /* 0x73 */	223	SPECIAL, /* 0x73 */
224	SPECIAL, /* 0x74 */	224	SPECIAL, /* 0x74 */
225	SPECIAL, /* 0x75 */	225	SPECIAL, /* 0x75 */
226	SPECIAL, /* 0x76 */	226	SPECIAL, /* 0x76 */
227	SPECIAL, /* 0x77 */	227	SPECIAL, /* 0x77 */
228	SPECIAL, /* 0x78 */	228	SPECIAL, /* 0x78 */
229	SPECIAL, /* 0x79 */	229	SPECIAL, /* 0x79 */
230	SPECIAL, /* 0x7a */	230	SPECIAL, /* 0x7a */
231	SPECIAL, /* 0x7b */	231	SPECIAL, /* 0x7b */
232	SPECIAL, /* 0x7c */	232	SPECIAL, /* 0x7c */
233	SPECIAL, /* 0x7d */	233	SPECIAL, /* 0x7d */
234	SPECIAL, /* 0x7e */	234	SPECIAL, /* 0x7e */
235	SPECIAL, /* 0x7f */	235	SPECIAL, /* 0x7f */
236	};	236	};
237		237
238	/** Initialize i8042. */	238	/** Initialize i8042. */
239	void i8042_init(void)	239	void i8042_init(void)
240	{	240	{
241	trap_register(VECTOR_KBD, i8042_interrupt);	241	trap_register(VECTOR_KBD, i8042_interrupt);
242	trap_virtual_enable_irqs(1<<IRQ_KBD);	242	trap_virtual_enable_irqs(1<<IRQ_KBD);
243	spinlock_initialize(&keylock);	243	spinlock_initialize(&keylock, "i8042_lock");
244	chardev_initialize(&kbrd, &ops);	244	chardev_initialize(&kbrd, &ops);
245	stdin = &kbrd;	245	stdin = &kbrd;
246	}	246	}
247		247
248	/** Process i8042 interrupt.	248	/** Process i8042 interrupt.
249	*	249	*
250	* @param n Interrupt vector.	250	* @param n Interrupt vector.
251	* @param stack Interrupted stack.	251	* @param stack Interrupted stack.
252	*/	252	*/
253	void i8042_interrupt(__u8 n, __native stack[])	253	void i8042_interrupt(__u8 n, __native stack[])
254	{	254	{
255	__u8 x;	255	__u8 x;
256		256
257	trap_virtual_eoi();	257	trap_virtual_eoi();
258	x = inb(i8042_DATA);	258	x = inb(i8042_DATA);
259	if (x & KEY_RELEASE)	259	if (x & KEY_RELEASE)
260	key_released(x ^ KEY_RELEASE);	260	key_released(x ^ KEY_RELEASE);
261	else	261	else
262	key_pressed(x);	262	key_pressed(x);
263	}	263	}
264		264
265	/** Process release of key.	265	/** Process release of key.
266	*	266	*
267	* @param sc Scancode of the key being released.	267	* @param sc Scancode of the key being released.
268	*/	268	*/
269	void key_released(__u8 sc)	269	void key_released(__u8 sc)
270	{	270	{
271	spinlock_lock(&keylock);	271	spinlock_lock(&keylock);
272	switch (sc) {	272	switch (sc) {
273	case SC_LSHIFT:	273	case SC_LSHIFT:
274	case SC_RSHIFT:	274	case SC_RSHIFT:
275	keyflags &= ~PRESSED_SHIFT;	275	keyflags &= ~PRESSED_SHIFT;
276	break;	276	break;
277	case SC_CAPSLOCK:	277	case SC_CAPSLOCK:
278	keyflags &= ~PRESSED_CAPSLOCK;	278	keyflags &= ~PRESSED_CAPSLOCK;
279	if (lockflags & LOCKED_CAPSLOCK)	279	if (lockflags & LOCKED_CAPSLOCK)
280	lockflags &= ~LOCKED_CAPSLOCK;	280	lockflags &= ~LOCKED_CAPSLOCK;
281	else	281	else
282	lockflags \|= LOCKED_CAPSLOCK;	282	lockflags \|= LOCKED_CAPSLOCK;
283	break;	283	break;
284	default:	284	default:
285	break;	285	break;
286	}	286	}
287	spinlock_unlock(&keylock);	287	spinlock_unlock(&keylock);
288	}	288	}
289		289
290	/** Process keypress.	290	/** Process keypress.
291	*	291	*
292	* @param sc Scancode of the key being pressed.	292	* @param sc Scancode of the key being pressed.
293	*/	293	*/
294	void key_pressed(__u8 sc)	294	void key_pressed(__u8 sc)
295	{	295	{
296	char *map = sc_primary_map;	296	char *map = sc_primary_map;
297	char ascii = sc_primary_map[sc];	297	char ascii = sc_primary_map[sc];
298	bool shift, capslock;	298	bool shift, capslock;
299	bool letter = false;	299	bool letter = false;
300		300
301	spinlock_lock(&keylock);	301	spinlock_lock(&keylock);
302	switch (sc) {	302	switch (sc) {
303	case SC_LSHIFT:	303	case SC_LSHIFT:
304	case SC_RSHIFT:	304	case SC_RSHIFT:
305	keyflags \|= PRESSED_SHIFT;	305	keyflags \|= PRESSED_SHIFT;
306	break;	306	break;
307	case SC_CAPSLOCK:	307	case SC_CAPSLOCK:
308	keyflags \|= PRESSED_CAPSLOCK;	308	keyflags \|= PRESSED_CAPSLOCK;
309	break;	309	break;
310	default:	310	default:
311	letter = is_lower(ascii);	311	letter = is_lower(ascii);
312	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);	312	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
313	shift = keyflags & PRESSED_SHIFT;	313	shift = keyflags & PRESSED_SHIFT;
314	if (letter && capslock)	314	if (letter && capslock)
315	shift = !shift;	315	shift = !shift;
316	if (shift)	316	if (shift)
317	map = sc_secondary_map;	317	map = sc_secondary_map;
318	chardev_push_character(&kbrd, map[sc]);	318	chardev_push_character(&kbrd, map[sc]);
319	break;	319	break;
320	}	320	}
321	spinlock_unlock(&keylock);	321	spinlock_unlock(&keylock);
322	}	322	}
323		323
324	/* Called from getc(). */	324	/* Called from getc(). */
325	void i8042_resume(void)	325	void i8042_resume(void)
326	{	326	{
327	}	327	}
328		328
329	/* Called from getc(). */	329	/* Called from getc(). */
330	void i8042_suspend(void)	330	void i8042_suspend(void)
331	{	331	{
332	}	332	}
333		333

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(root)/kernel/trunk/arch/ia32/src/drivers/i8042.c – Rev 534 → 552