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#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>
-
 
37
#include <typedefs.h>
36
 
38
 
37
/*
39
/**
38
 * i8042 processor driver.
40
 * i8042 processor driver.
-
 
41
 * It takes care of low-level keyboard functions.
39
 */
42
 */
40
 
43
 
-
 
44
#define SPECIAL     '?'
-
 
45
#define KEY_RELEASE 0x80
-
 
46
 
-
 
47
static void key_released(__u8 sc);
-
 
48
static void key_pressed(__u8 sc);
-
 
49
 
-
 
50
#define PRESSED_SHIFT       (1<<0)
-
 
51
#define PRESSED_CAPSLOCK    (1<<1)
-
 
52
#define LOCKED_CAPSLOCK     (1<<0)
-
 
53
 
-
 
54
static spinlock_t keylock;  /**< keylock protects keyflags and lockflags. */
-
 
55
static volatile int keyflags;       /**< Tracking of multiple keypresses. */
-
 
56
static volatile int lockflags;      /**< Tracking of multiple lock keys keypresses. */
-
 
57
 
-
 
58
/** Primary meaning of scancodes. */
-
 
59
static char sc_primary_map[] = {
-
 
60
    SPECIAL, /* 0x00 */
-
 
61
    SPECIAL, /* 0x01 - Esc */
-
 
62
    '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
-
 
63
    SPECIAL, /* 0x0e - Backspace */
-
 
64
    '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
-
 
65
    SPECIAL, /* 0x1d - LCtrl */
-
 
66
    'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
-
 
67
    '`',
-
 
68
    SPECIAL, /* 0x2a - LShift */
-
 
69
    '\\',
-
 
70
    'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
-
 
71
    SPECIAL, /* 0x36 - RShift */
-
 
72
    '*',
-
 
73
    SPECIAL, /* 0x38 - LAlt */
-
 
74
    ' ',
-
 
75
    SPECIAL, /* 0x3a - CapsLock */
-
 
76
    SPECIAL, /* 0x3b - F1 */
-
 
77
    SPECIAL, /* 0x3c - F2 */
-
 
78
    SPECIAL, /* 0x3d - F3 */
-
 
79
    SPECIAL, /* 0x3e - F4 */
-
 
80
    SPECIAL, /* 0x3f - F5 */
-
 
81
    SPECIAL, /* 0x40 - F6 */
-
 
82
    SPECIAL, /* 0x41 - F7 */
-
 
83
    SPECIAL, /* 0x42 - F8 */
-
 
84
    SPECIAL, /* 0x43 - F9 */
-
 
85
    SPECIAL, /* 0x44 - F10 */
-
 
86
    SPECIAL, /* 0x45 - NumLock */
-
 
87
    SPECIAL, /* 0x46 - ScrollLock */
-
 
88
    '7', '8', '9', '-',
-
 
89
    '4', '5', '6', '+',
-
 
90
    '1', '2', '3',
-
 
91
    '0', '.',
-
 
92
    SPECIAL, /* 0x54 - Alt-SysRq */
-
 
93
    SPECIAL, /* 0x55 - F11/F12/PF1/FN */
-
 
94
    SPECIAL, /* 0x56 - unlabelled key next to LAlt */
-
 
95
    SPECIAL, /* 0x57 - F11 */
-
 
96
    SPECIAL, /* 0x58 - F12 */
-
 
97
    SPECIAL, /* 0x59 */
-
 
98
    SPECIAL, /* 0x5a */
-
 
99
    SPECIAL, /* 0x5b */
-
 
100
    SPECIAL, /* 0x5c */
-
 
101
    SPECIAL, /* 0x5d */
-
 
102
    SPECIAL, /* 0x5e */
-
 
103
    SPECIAL, /* 0x5f */
-
 
104
    SPECIAL, /* 0x60 */
-
 
105
    SPECIAL, /* 0x61 */
-
 
106
    SPECIAL, /* 0x62 */
-
 
107
    SPECIAL, /* 0x63 */
-
 
108
    SPECIAL, /* 0x64 */
-
 
109
    SPECIAL, /* 0x65 */
-
 
110
    SPECIAL, /* 0x66 */
-
 
111
    SPECIAL, /* 0x67 */
-
 
112
    SPECIAL, /* 0x68 */
-
 
113
    SPECIAL, /* 0x69 */
-
 
114
    SPECIAL, /* 0x6a */
-
 
115
    SPECIAL, /* 0x6b */
-
 
116
    SPECIAL, /* 0x6c */
-
 
117
    SPECIAL, /* 0x6d */
-
 
118
    SPECIAL, /* 0x6e */
-
 
119
    SPECIAL, /* 0x6f */
-
 
120
    SPECIAL, /* 0x70 */
-
 
121
    SPECIAL, /* 0x71 */
-
 
122
    SPECIAL, /* 0x72 */
-
 
123
    SPECIAL, /* 0x73 */
-
 
124
    SPECIAL, /* 0x74 */
-
 
125
    SPECIAL, /* 0x75 */
-
 
126
    SPECIAL, /* 0x76 */
-
 
127
    SPECIAL, /* 0x77 */
-
 
128
    SPECIAL, /* 0x78 */
-
 
129
    SPECIAL, /* 0x79 */
-
 
130
    SPECIAL, /* 0x7a */
-
 
131
    SPECIAL, /* 0x7b */
-
 
132
    SPECIAL, /* 0x7c */
-
 
133
    SPECIAL, /* 0x7d */
-
 
134
    SPECIAL, /* 0x7e */
-
 
135
    SPECIAL, /* 0x7f */
-
 
136
};
-
 
137
 
-
 
138
/** Secondary meaning of scancodes. */
-
 
139
static char sc_secondary_map[] = {
-
 
140
    SPECIAL, /* 0x00 */
-
 
141
    SPECIAL, /* 0x01 - Esc */
-
 
142
    '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
-
 
143
    SPECIAL, /* 0x0e - Backspace */
-
 
144
    '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
-
 
145
    SPECIAL, /* 0x1d - LCtrl */
-
 
146
    'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
-
 
147
    '~',
-
 
148
    SPECIAL, /* 0x2a - LShift */
-
 
149
    '|',
-
 
150
    'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
-
 
151
    SPECIAL, /* 0x36 - RShift */
-
 
152
    '*',
-
 
153
    SPECIAL, /* 0x38 - LAlt */
-
 
154
    ' ',
-
 
155
    SPECIAL, /* 0x3a - CapsLock */
-
 
156
    SPECIAL, /* 0x3b - F1 */
-
 
157
    SPECIAL, /* 0x3c - F2 */
-
 
158
    SPECIAL, /* 0x3d - F3 */
-
 
159
    SPECIAL, /* 0x3e - F4 */
-
 
160
    SPECIAL, /* 0x3f - F5 */
-
 
161
    SPECIAL, /* 0x40 - F6 */
-
 
162
    SPECIAL, /* 0x41 - F7 */
-
 
163
    SPECIAL, /* 0x42 - F8 */
-
 
164
    SPECIAL, /* 0x43 - F9 */
-
 
165
    SPECIAL, /* 0x44 - F10 */
-
 
166
    SPECIAL, /* 0x45 - NumLock */
-
 
167
    SPECIAL, /* 0x46 - ScrollLock */
-
 
168
    '7', '8', '9', '-',
-
 
169
    '4', '5', '6', '+',
-
 
170
    '1', '2', '3',
-
 
171
    '0', '.',
-
 
172
    SPECIAL, /* 0x54 - Alt-SysRq */
-
 
173
    SPECIAL, /* 0x55 - F11/F12/PF1/FN */
-
 
174
    SPECIAL, /* 0x56 - unlabelled key next to LAlt */
-
 
175
    SPECIAL, /* 0x57 - F11 */
-
 
176
    SPECIAL, /* 0x58 - F12 */
-
 
177
    SPECIAL, /* 0x59 */
-
 
178
    SPECIAL, /* 0x5a */
-
 
179
    SPECIAL, /* 0x5b */
-
 
180
    SPECIAL, /* 0x5c */
-
 
181
    SPECIAL, /* 0x5d */
-
 
182
    SPECIAL, /* 0x5e */
-
 
183
    SPECIAL, /* 0x5f */
-
 
184
    SPECIAL, /* 0x60 */
-
 
185
    SPECIAL, /* 0x61 */
-
 
186
    SPECIAL, /* 0x62 */
-
 
187
    SPECIAL, /* 0x63 */
-
 
188
    SPECIAL, /* 0x64 */
-
 
189
    SPECIAL, /* 0x65 */
-
 
190
    SPECIAL, /* 0x66 */
-
 
191
    SPECIAL, /* 0x67 */
-
 
192
    SPECIAL, /* 0x68 */
-
 
193
    SPECIAL, /* 0x69 */
-
 
194
    SPECIAL, /* 0x6a */
-
 
195
    SPECIAL, /* 0x6b */
-
 
196
    SPECIAL, /* 0x6c */
-
 
197
    SPECIAL, /* 0x6d */
-
 
198
    SPECIAL, /* 0x6e */
-
 
199
    SPECIAL, /* 0x6f */
-
 
200
    SPECIAL, /* 0x70 */
-
 
201
    SPECIAL, /* 0x71 */
-
 
202
    SPECIAL, /* 0x72 */
-
 
203
    SPECIAL, /* 0x73 */
-
 
204
    SPECIAL, /* 0x74 */
-
 
205
    SPECIAL, /* 0x75 */
-
 
206
    SPECIAL, /* 0x76 */
-
 
207
    SPECIAL, /* 0x77 */
-
 
208
    SPECIAL, /* 0x78 */
-
 
209
    SPECIAL, /* 0x79 */
-
 
210
    SPECIAL, /* 0x7a */
-
 
211
    SPECIAL, /* 0x7b */
-
 
212
    SPECIAL, /* 0x7c */
-
 
213
    SPECIAL, /* 0x7d */
-
 
214
    SPECIAL, /* 0x7e */
-
 
215
    SPECIAL, /* 0x7f */
-
 
216
};
-
 
217
 
-
 
218
/** Initialize i8042. */
41
void i8042_init(void)
219
void i8042_init(void)
42
{
220
{
43
    trap_register(VECTOR_KBD, i8042_interrupt);
221
    trap_register(VECTOR_KBD, i8042_interrupt);
-
 
222
    spinlock_initialize(&keylock);
44
}
223
}
45
 
224
 
-
 
225
/** Process i8042 interrupt.
-
 
226
 *
-
 
227
 * @param n Interrupt vector.
-
 
228
 * @param stack Interrupted stack.
-
 
229
 */
46
void i8042_interrupt(__u8 n, __native stack[])
230
void i8042_interrupt(__u8 n, __native stack[])
47
{
231
{
48
    __u8 x;
232
    __u8 x;
49
 
233
 
50
    trap_virtual_eoi();
234
    trap_virtual_eoi();
51
    x = inb(0x60);
235
    x = inb(0x60);
-
 
236
    if (x & KEY_RELEASE)
-
 
237
        key_released(x ^ KEY_RELEASE);
-
 
238
    else
-
 
239
        key_pressed(x);
-
 
240
}
-
 
241
 
-
 
242
/** Process release of key.
-
 
243
 *
-
 
244
 * @param sc Scancode of the key being released.
-
 
245
 */
-
 
246
void key_released(__u8 sc)
-
 
247
{
-
 
248
    spinlock_lock(&keylock);
-
 
249
    switch (sc) {
-
 
250
        case SC_LSHIFT:
-
 
251
        case SC_RSHIFT:
-
 
252
        keyflags &= ~PRESSED_SHIFT;
-
 
253
        break;
-
 
254
        case SC_CAPSLOCK:
-
 
255
        keyflags &= ~PRESSED_CAPSLOCK;
-
 
256
        if (lockflags & LOCKED_CAPSLOCK)
-
 
257
            lockflags &= ~LOCKED_CAPSLOCK;
-
 
258
        else
-
 
259
            lockflags |= LOCKED_CAPSLOCK;
-
 
260
        break;
-
 
261
        default:
-
 
262
        break;
-
 
263
    }
-
 
264
    spinlock_unlock(&keylock);
-
 
265
}
-
 
266
 
-
 
267
/** Process keypress.
-
 
268
 *
-
 
269
 * @param sc Scancode of the key being pressed.
-
 
270
 */
-
 
271
void key_pressed(__u8 sc)
-
 
272
{
-
 
273
    char *map = sc_primary_map;
-
 
274
    char ascii = sc_primary_map[sc];
-
 
275
    bool shift, capslock;
-
 
276
    bool letter = false;
-
 
277
 
52
    printf("%d", CPU->id);;
278
    spinlock_lock(&keylock);
-
 
279
    switch (sc) {
-
 
280
        case SC_LSHIFT:
-
 
281
        case SC_RSHIFT:
-
 
282
            keyflags |= PRESSED_SHIFT;
-
 
283
        break;
-
 
284
        case SC_CAPSLOCK:
-
 
285
        keyflags |= PRESSED_CAPSLOCK;
-
 
286
        break;
-
 
287
        default:
-
 
288
            letter = (ascii >= 'a') && (ascii <= 'z');
-
 
289
        capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
-
 
290
        shift = keyflags & PRESSED_SHIFT;
-
 
291
        if (letter && capslock)
-
 
292
            shift = !shift;
-
 
293
        if (shift)
-
 
294
            map = sc_secondary_map;
-
 
295
        putchar(map[sc]);
-
 
296
        break;
-
 
297
    }
-
 
298
    spinlock_unlock(&keylock);
53
}
299
}