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1339 cejka 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * Copyright (C) 2006 Josef Cejka
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <arch/kbd.h>
1353 jermar 31
#include <ipc/ipc.h>
1339 cejka 32
 
1603 vana 33
#define SPECIAL     255
1339 cejka 34
#define KEY_RELEASE 0x80
35
 
36
/**
37
 * These codes read from i8042 data register are silently ignored.
38
 */
39
#define IGNORE_CODE 0x7f
40
 
41
#define PRESSED_SHIFT       (1<<0)
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#define PRESSED_CAPSLOCK    (1<<1)
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#define LOCKED_CAPSLOCK     (1<<0)
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45
/** Scancodes. */
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#define SC_ESC      0x01
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#define SC_BACKSPACE    0x0e
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#define SC_LSHIFT   0x2a
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#define SC_RSHIFT   0x36
50
#define SC_CAPSLOCK 0x3a
51
#define SC_SPEC_ESCAPE  0xe0
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#define SC_LEFTARR      0x4b
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#define SC_RIGHTARR     0x4d
54
#define SC_UPARR        0x48
55
#define SC_DOWNARR      0x50
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#define SC_DELETE       0x53
57
#define SC_HOME         0x47
58
#define SC_END          0x4f
59
 
1560 vana 60
#define FUNCTION_KEYS 0x100
61
 
1339 cejka 62
static volatile int keyflags;       /**< Tracking of multiple keypresses. */
63
static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
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65
/** Primary meaning of scancodes. */
1560 vana 66
static int sc_primary_map[] = {
1339 cejka 67
    SPECIAL, /* 0x00 */
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    SPECIAL, /* 0x01 - Esc */
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    '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
70
    '\b', /* 0x0e - Backspace */
71
    '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
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    SPECIAL, /* 0x1d - LCtrl */
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    'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
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    '`',
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    SPECIAL, /* 0x2a - LShift */
76
    '\\',
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    'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
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    SPECIAL, /* 0x36 - RShift */
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    '*',
80
    SPECIAL, /* 0x38 - LAlt */
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    ' ',
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    SPECIAL, /* 0x3a - CapsLock */
1560 vana 83
    (FUNCTION_KEYS | 1), /* 0x3b - F1 */
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    (FUNCTION_KEYS | 2), /* 0x3c - F2 */
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    (FUNCTION_KEYS | 3), /* 0x3d - F3 */
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    (FUNCTION_KEYS | 4), /* 0x3e - F4 */
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    (FUNCTION_KEYS | 5), /* 0x3f - F5 */
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    (FUNCTION_KEYS | 6), /* 0x40 - F6 */
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    (FUNCTION_KEYS | 7), /* 0x41 - F7 */
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    (FUNCTION_KEYS | 8), /* 0x42 - F8 */
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    (FUNCTION_KEYS | 9), /* 0x43 - F9 */
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    (FUNCTION_KEYS | 10), /* 0x44 - F10 */
1339 cejka 93
    SPECIAL, /* 0x45 - NumLock */
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    SPECIAL, /* 0x46 - ScrollLock */
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    '7', '8', '9', '-',
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    '4', '5', '6', '+',
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    '1', '2', '3',
98
    '0', '.',
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    SPECIAL, /* 0x54 - Alt-SysRq */
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    SPECIAL, /* 0x55 - F11/F12/PF1/FN */
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    SPECIAL, /* 0x56 - unlabelled key next to LAlt */
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    (FUNCTION_KEYS | 11), /* 0x57 - F11 */
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    (FUNCTION_KEYS | 12), /* 0x58 - F12 */
1339 cejka 104
    SPECIAL, /* 0x59 */
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    SPECIAL, /* 0x5a */
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    SPECIAL, /* 0x5b */
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    SPECIAL, /* 0x5c */
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    SPECIAL, /* 0x5d */
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    SPECIAL, /* 0x5e */
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    SPECIAL, /* 0x5f */
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    SPECIAL, /* 0x60 */
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    SPECIAL, /* 0x61 */
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    SPECIAL, /* 0x62 */
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    SPECIAL, /* 0x63 */
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    SPECIAL, /* 0x64 */
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    SPECIAL, /* 0x65 */
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    SPECIAL, /* 0x66 */
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    SPECIAL, /* 0x67 */
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    SPECIAL, /* 0x68 */
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    SPECIAL, /* 0x69 */
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    SPECIAL, /* 0x6a */
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    SPECIAL, /* 0x6b */
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    SPECIAL, /* 0x6c */
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    SPECIAL, /* 0x6d */
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    SPECIAL, /* 0x6e */
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    SPECIAL, /* 0x6f */
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    SPECIAL, /* 0x70 */
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    SPECIAL, /* 0x71 */
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    SPECIAL, /* 0x72 */
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    SPECIAL, /* 0x73 */
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    SPECIAL, /* 0x74 */
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    SPECIAL, /* 0x75 */
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    SPECIAL, /* 0x76 */
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    SPECIAL, /* 0x77 */
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    SPECIAL, /* 0x78 */
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    SPECIAL, /* 0x79 */
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    SPECIAL, /* 0x7a */
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    SPECIAL, /* 0x7b */
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    SPECIAL, /* 0x7c */
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    SPECIAL, /* 0x7d */
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    SPECIAL, /* 0x7e */
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    SPECIAL, /* 0x7f */
143
};
144
 
145
/** Secondary meaning of scancodes. */
1566 cejka 146
static int sc_secondary_map[] = {
1339 cejka 147
    SPECIAL, /* 0x00 */
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    SPECIAL, /* 0x01 - Esc */
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    '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
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    SPECIAL, /* 0x0e - Backspace */
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    '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
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    SPECIAL, /* 0x1d - LCtrl */
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    'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
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    '~',
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    SPECIAL, /* 0x2a - LShift */
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    '|',
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    'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
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    SPECIAL, /* 0x36 - RShift */
159
    '*',
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    SPECIAL, /* 0x38 - LAlt */
161
    ' ',
162
    SPECIAL, /* 0x3a - CapsLock */
1504 cejka 163
    SPECIAL, /* 0x3b - F1 */
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    SPECIAL, /* 0x3c - F2 */
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    SPECIAL, /* 0x3d - F3 */
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    SPECIAL, /* 0x3e - F4 */
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    SPECIAL, /* 0x3f - F5 */
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    SPECIAL, /* 0x40 - F6 */
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    SPECIAL, /* 0x41 - F7 */
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    SPECIAL, /* 0x42 - F8 */
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    SPECIAL, /* 0x43 - F9 */
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    SPECIAL, /* 0x44 - F10 */
1339 cejka 173
    SPECIAL, /* 0x45 - NumLock */
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    SPECIAL, /* 0x46 - ScrollLock */
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    '7', '8', '9', '-',
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    '4', '5', '6', '+',
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    '1', '2', '3',
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    '0', '.',
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    SPECIAL, /* 0x54 - Alt-SysRq */
180
    SPECIAL, /* 0x55 - F11/F12/PF1/FN */
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    SPECIAL, /* 0x56 - unlabelled key next to LAlt */
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    SPECIAL, /* 0x57 - F11 */
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    SPECIAL, /* 0x58 - F12 */
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    SPECIAL, /* 0x59 */
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    SPECIAL, /* 0x5a */
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    SPECIAL, /* 0x5b */
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    SPECIAL, /* 0x5c */
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    SPECIAL, /* 0x5d */
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    SPECIAL, /* 0x5e */
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    SPECIAL, /* 0x5f */
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    SPECIAL, /* 0x60 */
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    SPECIAL, /* 0x61 */
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    SPECIAL, /* 0x62 */
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    SPECIAL, /* 0x63 */
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    SPECIAL, /* 0x64 */
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    SPECIAL, /* 0x65 */
197
    SPECIAL, /* 0x66 */
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    SPECIAL, /* 0x67 */
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    SPECIAL, /* 0x68 */
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    SPECIAL, /* 0x69 */
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    SPECIAL, /* 0x6a */
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    SPECIAL, /* 0x6b */
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    SPECIAL, /* 0x6c */
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    SPECIAL, /* 0x6d */
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    SPECIAL, /* 0x6e */
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    SPECIAL, /* 0x6f */
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    SPECIAL, /* 0x70 */
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    SPECIAL, /* 0x71 */
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    SPECIAL, /* 0x72 */
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    SPECIAL, /* 0x73 */
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    SPECIAL, /* 0x74 */
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    SPECIAL, /* 0x75 */
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    SPECIAL, /* 0x76 */
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    SPECIAL, /* 0x77 */
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    SPECIAL, /* 0x78 */
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    SPECIAL, /* 0x79 */
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    SPECIAL, /* 0x7a */
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    SPECIAL, /* 0x7b */
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    SPECIAL, /* 0x7c */
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    SPECIAL, /* 0x7d */
221
    SPECIAL, /* 0x7e */
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    SPECIAL, /* 0x7f */
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};
224
 
225
irq_cmd_t i8042_cmds[1] = {
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    { CMD_PORT_READ_1, (void *)0x60, 0 }
227
};
228
 
229
irq_code_t i8042_kbd = {
230
    1,
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    i8042_cmds
232
};
233
 
1451 cejka 234
static int key_released(keybuffer_t *keybuffer, unsigned char key)
1339 cejka 235
{
236
    switch (key) {
237
        case SC_LSHIFT:
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        case SC_RSHIFT:
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            keyflags &= ~PRESSED_SHIFT;
240
            break;
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        case SC_CAPSLOCK:
242
            keyflags &= ~PRESSED_CAPSLOCK;
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            if (lockflags & LOCKED_CAPSLOCK)
244
                lockflags &= ~LOCKED_CAPSLOCK;
245
                else
246
                lockflags |= LOCKED_CAPSLOCK;
247
            break;
248
        default:
249
            break;
250
    }
251
}
252
 
1451 cejka 253
static int key_pressed(keybuffer_t *keybuffer, unsigned char key)
1339 cejka 254
{
1560 vana 255
    int *map = sc_primary_map;
256
    int ascii = sc_primary_map[key];
257
    int shift, capslock;
258
    int letter = 0;
1339 cejka 259
 
260
    switch (key) {
261
        case SC_LSHIFT:
262
        case SC_RSHIFT:
263
                keyflags |= PRESSED_SHIFT;
264
            break;
265
        case SC_CAPSLOCK:
266
            keyflags |= PRESSED_CAPSLOCK;
267
            break;
268
        case SC_SPEC_ESCAPE:
269
            break;
1504 cejka 270
    /*  case SC_LEFTARR:
1451 cejka 271
            if (keybuffer_available(keybuffer) >= 3) {
272
                keybuffer_push(keybuffer, 0x1b);   
273
                keybuffer_push(keybuffer, 0x5b);   
274
                keybuffer_push(keybuffer, 0x44);   
1339 cejka 275
            }
276
            break;
277
        case SC_RIGHTARR:
1451 cejka 278
            if (keybuffer_available(keybuffer) >= 3) {
279
                keybuffer_push(keybuffer, 0x1b);   
280
                keybuffer_push(keybuffer, 0x5b);   
281
                keybuffer_push(keybuffer, 0x43);   
1339 cejka 282
            }
283
            break;
284
        case SC_UPARR:
1451 cejka 285
            if (keybuffer_available(keybuffer) >= 3) {
286
                keybuffer_push(keybuffer, 0x1b);   
287
                keybuffer_push(keybuffer, 0x5b);   
288
                keybuffer_push(keybuffer, 0x41);   
1339 cejka 289
            }
290
            break;
291
        case SC_DOWNARR:
1451 cejka 292
            if (keybuffer_available(keybuffer) >= 3) {
293
                keybuffer_push(keybuffer, 0x1b);   
294
                keybuffer_push(keybuffer, 0x5b);   
295
                keybuffer_push(keybuffer, 0x42);   
1339 cejka 296
            }
297
            break;
298
        case SC_HOME:
1451 cejka 299
            if (keybuffer_available(keybuffer) >= 3) {
300
                keybuffer_push(keybuffer, 0x1b);   
301
                keybuffer_push(keybuffer, 0x4f);   
302
                keybuffer_push(keybuffer, 0x48);   
1339 cejka 303
            }
304
            break;
305
        case SC_END:
1451 cejka 306
            if (keybuffer_available(keybuffer) >= 3) {
307
                keybuffer_push(keybuffer, 0x1b);   
308
                keybuffer_push(keybuffer, 0x4f);   
309
                keybuffer_push(keybuffer, 0x46);   
1339 cejka 310
            }
311
            break;
312
        case SC_DELETE:
1451 cejka 313
            if (keybuffer_available(keybuffer) >= 4) {
314
                keybuffer_push(keybuffer, 0x1b);   
315
                keybuffer_push(keybuffer, 0x5b);   
316
                keybuffer_push(keybuffer, 0x33);   
317
                keybuffer_push(keybuffer, 0x7e);   
1339 cejka 318
            }
319
            break;
1504 cejka 320
    */  default:
1339 cejka 321
                letter = ((ascii >= 'a') && (ascii <= 'z'));
322
            capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
323
            shift = keyflags & PRESSED_SHIFT;
324
            if (letter && capslock)
325
                shift = !shift;
326
            if (shift)
327
                map = sc_secondary_map;
1504 cejka 328
            if (map[key] != SPECIAL)
329
                keybuffer_push(keybuffer, map[key]);   
1339 cejka 330
            break;
331
    }
332
}
333
 
334
/** Register uspace irq handler
335
 * @return
336
 */
337
int kbd_arch_init(void)
338
{
339
    return !(ipc_register_irq(1, &i8042_kbd));
340
}
341
 
1451 cejka 342
int kbd_arch_process(keybuffer_t *keybuffer, int scan_code)
1339 cejka 343
{
344
    if (scan_code != IGNORE_CODE) {
345
        if (scan_code & KEY_RELEASE)
1451 cejka 346
            key_released(keybuffer, scan_code ^ KEY_RELEASE);
1339 cejka 347
        else
1451 cejka 348
            key_pressed(keybuffer, scan_code);
1339 cejka 349
    }
350
    return  1;
351
}