Rev 1195 | Rev 1474 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 894 | jermar | 29 | #include <genarch/i8042/i8042.h> |
| 30 | #include <arch/drivers/i8042.h> |
||
| 1 | jermar | 31 | #include <arch/interrupt.h> |
| 32 | #include <cpu.h> |
||
| 33 | #include <arch/asm.h> |
||
| 34 | #include <arch.h> |
||
| 508 | jermar | 35 | #include <synch/spinlock.h> |
| 36 | #include <typedefs.h> |
||
| 511 | jermar | 37 | #include <console/chardev.h> |
| 38 | #include <console/console.h> |
||
| 517 | jermar | 39 | #include <macros.h> |
| 576 | palkovsky | 40 | #include <interrupt.h> |
| 1 | jermar | 41 | |
| 508 | jermar | 42 | /** |
| 1 | jermar | 43 | * i8042 processor driver. |
| 508 | jermar | 44 | * It takes care of low-level keyboard functions. |
| 1 | jermar | 45 | */ |
| 46 | |||
| 512 | jermar | 47 | /** Keyboard commands. */ |
| 48 | #define KBD_ENABLE 0xf4 |
||
| 49 | #define KBD_DISABLE 0xf5 |
||
| 50 | #define KBD_ACK 0xfa |
||
| 51 | |||
| 670 | vana | 52 | /* |
| 893 | jermar | 53 | * 60 Write 8042 Command Byte: next data byte written to port 60h is |
| 895 | jermar | 54 | * placed in 8042 command register. Format: |
| 893 | jermar | 55 | * |
| 56 | * |7|6|5|4|3|2|1|0|8042 Command Byte |
||
| 57 | * | | | | | | | `---- 1=enable output register full interrupt |
||
| 58 | * | | | | | | `----- should be 0 |
||
| 59 | * | | | | | `------ 1=set status register system, 0=clear |
||
| 60 | * | | | | `------- 1=override keyboard inhibit, 0=allow inhibit |
||
| 61 | * | | | `-------- disable keyboard I/O by driving clock line low |
||
| 62 | * | | `--------- disable auxiliary device, drives clock line low |
||
| 63 | * | `---------- IBM scancode translation 0=AT, 1=PC/XT |
||
| 64 | * `----------- reserved, should be 0 |
||
| 65 | */ |
||
| 670 | vana | 66 | |
| 893 | jermar | 67 | #define i8042_SET_COMMAND 0x60 |
| 68 | #define i8042_COMMAND 0x49 |
||
| 894 | jermar | 69 | |
| 70 | #define i8042_BUFFER_FULL_MASK 0x01 |
||
| 893 | jermar | 71 | #define i8042_WAIT_MASK 0x02 |
| 670 | vana | 72 | |
| 508 | jermar | 73 | #define SPECIAL '?' |
| 74 | #define KEY_RELEASE 0x80 |
||
| 75 | |||
| 895 | jermar | 76 | /** |
| 77 | * These codes read from i8042 data register are silently ignored. |
||
| 78 | */ |
||
| 79 | #define IGNORE_CODE 0x7f |
||
| 80 | |||
| 508 | jermar | 81 | static void key_released(__u8 sc); |
| 82 | static void key_pressed(__u8 sc); |
||
| 878 | vana | 83 | static char key_read(chardev_t *d); |
| 508 | jermar | 84 | |
| 85 | #define PRESSED_SHIFT (1<<0) |
||
| 86 | #define PRESSED_CAPSLOCK (1<<1) |
||
| 87 | #define LOCKED_CAPSLOCK (1<<0) |
||
| 88 | |||
| 894 | jermar | 89 | #define ACTIVE_READ_BUFF_SIZE 16 /* Must be power of 2 */ |
| 878 | vana | 90 | |
| 894 | jermar | 91 | static __u8 active_read_buff[ACTIVE_READ_BUFF_SIZE]; |
| 878 | vana | 92 | |
| 623 | jermar | 93 | SPINLOCK_INITIALIZE(keylock); /**< keylock protects keyflags and lockflags. */ |
| 508 | jermar | 94 | static volatile int keyflags; /**< Tracking of multiple keypresses. */ |
| 509 | jermar | 95 | static volatile int lockflags; /**< Tracking of multiple keys lockings. */ |
| 508 | jermar | 96 | |
| 575 | palkovsky | 97 | static void i8042_suspend(chardev_t *); |
| 98 | static void i8042_resume(chardev_t *); |
||
| 511 | jermar | 99 | |
| 100 | static chardev_t kbrd; |
||
| 101 | static chardev_operations_t ops = { |
||
| 102 | .suspend = i8042_suspend, |
||
| 878 | vana | 103 | .resume = i8042_resume, |
| 104 | .read = key_read |
||
| 511 | jermar | 105 | }; |
| 106 | |||
| 508 | jermar | 107 | /** Primary meaning of scancodes. */ |
| 108 | static char sc_primary_map[] = { |
||
| 109 | SPECIAL, /* 0x00 */ |
||
| 110 | SPECIAL, /* 0x01 - Esc */ |
||
| 111 | '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', |
||
| 588 | palkovsky | 112 | '\b', /* 0x0e - Backspace */ |
| 508 | jermar | 113 | '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', |
| 114 | SPECIAL, /* 0x1d - LCtrl */ |
||
| 115 | 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', |
||
| 116 | '`', |
||
| 117 | SPECIAL, /* 0x2a - LShift */ |
||
| 118 | '\\', |
||
| 119 | 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', |
||
| 120 | SPECIAL, /* 0x36 - RShift */ |
||
| 121 | '*', |
||
| 122 | SPECIAL, /* 0x38 - LAlt */ |
||
| 123 | ' ', |
||
| 124 | SPECIAL, /* 0x3a - CapsLock */ |
||
| 125 | SPECIAL, /* 0x3b - F1 */ |
||
| 126 | SPECIAL, /* 0x3c - F2 */ |
||
| 127 | SPECIAL, /* 0x3d - F3 */ |
||
| 128 | SPECIAL, /* 0x3e - F4 */ |
||
| 129 | SPECIAL, /* 0x3f - F5 */ |
||
| 130 | SPECIAL, /* 0x40 - F6 */ |
||
| 131 | SPECIAL, /* 0x41 - F7 */ |
||
| 132 | SPECIAL, /* 0x42 - F8 */ |
||
| 133 | SPECIAL, /* 0x43 - F9 */ |
||
| 134 | SPECIAL, /* 0x44 - F10 */ |
||
| 135 | SPECIAL, /* 0x45 - NumLock */ |
||
| 136 | SPECIAL, /* 0x46 - ScrollLock */ |
||
| 137 | '7', '8', '9', '-', |
||
| 138 | '4', '5', '6', '+', |
||
| 139 | '1', '2', '3', |
||
| 140 | '0', '.', |
||
| 141 | SPECIAL, /* 0x54 - Alt-SysRq */ |
||
| 142 | SPECIAL, /* 0x55 - F11/F12/PF1/FN */ |
||
| 143 | SPECIAL, /* 0x56 - unlabelled key next to LAlt */ |
||
| 144 | SPECIAL, /* 0x57 - F11 */ |
||
| 145 | SPECIAL, /* 0x58 - F12 */ |
||
| 146 | SPECIAL, /* 0x59 */ |
||
| 147 | SPECIAL, /* 0x5a */ |
||
| 148 | SPECIAL, /* 0x5b */ |
||
| 149 | SPECIAL, /* 0x5c */ |
||
| 150 | SPECIAL, /* 0x5d */ |
||
| 151 | SPECIAL, /* 0x5e */ |
||
| 152 | SPECIAL, /* 0x5f */ |
||
| 153 | SPECIAL, /* 0x60 */ |
||
| 154 | SPECIAL, /* 0x61 */ |
||
| 155 | SPECIAL, /* 0x62 */ |
||
| 156 | SPECIAL, /* 0x63 */ |
||
| 157 | SPECIAL, /* 0x64 */ |
||
| 158 | SPECIAL, /* 0x65 */ |
||
| 159 | SPECIAL, /* 0x66 */ |
||
| 160 | SPECIAL, /* 0x67 */ |
||
| 161 | SPECIAL, /* 0x68 */ |
||
| 162 | SPECIAL, /* 0x69 */ |
||
| 163 | SPECIAL, /* 0x6a */ |
||
| 164 | SPECIAL, /* 0x6b */ |
||
| 165 | SPECIAL, /* 0x6c */ |
||
| 166 | SPECIAL, /* 0x6d */ |
||
| 167 | SPECIAL, /* 0x6e */ |
||
| 168 | SPECIAL, /* 0x6f */ |
||
| 169 | SPECIAL, /* 0x70 */ |
||
| 170 | SPECIAL, /* 0x71 */ |
||
| 171 | SPECIAL, /* 0x72 */ |
||
| 172 | SPECIAL, /* 0x73 */ |
||
| 173 | SPECIAL, /* 0x74 */ |
||
| 174 | SPECIAL, /* 0x75 */ |
||
| 175 | SPECIAL, /* 0x76 */ |
||
| 176 | SPECIAL, /* 0x77 */ |
||
| 177 | SPECIAL, /* 0x78 */ |
||
| 178 | SPECIAL, /* 0x79 */ |
||
| 179 | SPECIAL, /* 0x7a */ |
||
| 180 | SPECIAL, /* 0x7b */ |
||
| 181 | SPECIAL, /* 0x7c */ |
||
| 182 | SPECIAL, /* 0x7d */ |
||
| 183 | SPECIAL, /* 0x7e */ |
||
| 184 | SPECIAL, /* 0x7f */ |
||
| 185 | }; |
||
| 186 | |||
| 187 | /** Secondary meaning of scancodes. */ |
||
| 188 | static char sc_secondary_map[] = { |
||
| 189 | SPECIAL, /* 0x00 */ |
||
| 190 | SPECIAL, /* 0x01 - Esc */ |
||
| 191 | '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', |
||
| 192 | SPECIAL, /* 0x0e - Backspace */ |
||
| 193 | '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n', |
||
| 194 | SPECIAL, /* 0x1d - LCtrl */ |
||
| 195 | 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', |
||
| 196 | '~', |
||
| 197 | SPECIAL, /* 0x2a - LShift */ |
||
| 198 | '|', |
||
| 199 | 'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?', |
||
| 200 | SPECIAL, /* 0x36 - RShift */ |
||
| 201 | '*', |
||
| 202 | SPECIAL, /* 0x38 - LAlt */ |
||
| 203 | ' ', |
||
| 204 | SPECIAL, /* 0x3a - CapsLock */ |
||
| 205 | SPECIAL, /* 0x3b - F1 */ |
||
| 206 | SPECIAL, /* 0x3c - F2 */ |
||
| 207 | SPECIAL, /* 0x3d - F3 */ |
||
| 208 | SPECIAL, /* 0x3e - F4 */ |
||
| 209 | SPECIAL, /* 0x3f - F5 */ |
||
| 210 | SPECIAL, /* 0x40 - F6 */ |
||
| 211 | SPECIAL, /* 0x41 - F7 */ |
||
| 212 | SPECIAL, /* 0x42 - F8 */ |
||
| 213 | SPECIAL, /* 0x43 - F9 */ |
||
| 214 | SPECIAL, /* 0x44 - F10 */ |
||
| 215 | SPECIAL, /* 0x45 - NumLock */ |
||
| 216 | SPECIAL, /* 0x46 - ScrollLock */ |
||
| 217 | '7', '8', '9', '-', |
||
| 218 | '4', '5', '6', '+', |
||
| 219 | '1', '2', '3', |
||
| 220 | '0', '.', |
||
| 221 | SPECIAL, /* 0x54 - Alt-SysRq */ |
||
| 222 | SPECIAL, /* 0x55 - F11/F12/PF1/FN */ |
||
| 223 | SPECIAL, /* 0x56 - unlabelled key next to LAlt */ |
||
| 224 | SPECIAL, /* 0x57 - F11 */ |
||
| 225 | SPECIAL, /* 0x58 - F12 */ |
||
| 226 | SPECIAL, /* 0x59 */ |
||
| 227 | SPECIAL, /* 0x5a */ |
||
| 228 | SPECIAL, /* 0x5b */ |
||
| 229 | SPECIAL, /* 0x5c */ |
||
| 230 | SPECIAL, /* 0x5d */ |
||
| 231 | SPECIAL, /* 0x5e */ |
||
| 232 | SPECIAL, /* 0x5f */ |
||
| 233 | SPECIAL, /* 0x60 */ |
||
| 234 | SPECIAL, /* 0x61 */ |
||
| 235 | SPECIAL, /* 0x62 */ |
||
| 236 | SPECIAL, /* 0x63 */ |
||
| 237 | SPECIAL, /* 0x64 */ |
||
| 238 | SPECIAL, /* 0x65 */ |
||
| 239 | SPECIAL, /* 0x66 */ |
||
| 240 | SPECIAL, /* 0x67 */ |
||
| 241 | SPECIAL, /* 0x68 */ |
||
| 242 | SPECIAL, /* 0x69 */ |
||
| 243 | SPECIAL, /* 0x6a */ |
||
| 244 | SPECIAL, /* 0x6b */ |
||
| 245 | SPECIAL, /* 0x6c */ |
||
| 246 | SPECIAL, /* 0x6d */ |
||
| 247 | SPECIAL, /* 0x6e */ |
||
| 248 | SPECIAL, /* 0x6f */ |
||
| 249 | SPECIAL, /* 0x70 */ |
||
| 250 | SPECIAL, /* 0x71 */ |
||
| 251 | SPECIAL, /* 0x72 */ |
||
| 252 | SPECIAL, /* 0x73 */ |
||
| 253 | SPECIAL, /* 0x74 */ |
||
| 254 | SPECIAL, /* 0x75 */ |
||
| 255 | SPECIAL, /* 0x76 */ |
||
| 256 | SPECIAL, /* 0x77 */ |
||
| 257 | SPECIAL, /* 0x78 */ |
||
| 258 | SPECIAL, /* 0x79 */ |
||
| 259 | SPECIAL, /* 0x7a */ |
||
| 260 | SPECIAL, /* 0x7b */ |
||
| 261 | SPECIAL, /* 0x7c */ |
||
| 262 | SPECIAL, /* 0x7d */ |
||
| 263 | SPECIAL, /* 0x7e */ |
||
| 264 | SPECIAL, /* 0x7f */ |
||
| 265 | }; |
||
| 266 | |||
| 958 | jermar | 267 | static void i8042_interrupt(int n, istate_t *istate); |
| 895 | jermar | 268 | static void i8042_wait(void); |
| 576 | palkovsky | 269 | |
| 508 | jermar | 270 | /** Initialize i8042. */ |
| 1 | jermar | 271 | void i8042_init(void) |
| 272 | { |
||
| 1195 | jermar | 273 | int i; |
| 274 | |||
| 958 | jermar | 275 | exc_register(VECTOR_KBD, "i8042_interrupt", (iroutine) i8042_interrupt); |
| 895 | jermar | 276 | i8042_wait(); |
| 894 | jermar | 277 | i8042_command_write(i8042_SET_COMMAND); |
| 895 | jermar | 278 | i8042_wait(); |
| 894 | jermar | 279 | i8042_data_write(i8042_COMMAND); |
| 895 | jermar | 280 | i8042_wait(); |
| 670 | vana | 281 | |
| 512 | jermar | 282 | trap_virtual_enable_irqs(1<<IRQ_KBD); |
| 575 | palkovsky | 283 | chardev_initialize("i8042_kbd", &kbrd, &ops); |
| 511 | jermar | 284 | stdin = &kbrd; |
| 1195 | jermar | 285 | |
| 1194 | vana | 286 | /* |
| 1195 | jermar | 287 | * Clear input buffer. |
| 288 | * Number of iterations is limited to prevent infinite looping. |
||
| 289 | */ |
||
| 290 | for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) { |
||
| 1194 | vana | 291 | i8042_data_read(); |
| 1195 | jermar | 292 | } |
| 1 | jermar | 293 | } |
| 294 | |||
| 508 | jermar | 295 | /** Process i8042 interrupt. |
| 296 | * |
||
| 297 | * @param n Interrupt vector. |
||
| 298 | * @param stack Interrupted stack. |
||
| 299 | */ |
||
| 958 | jermar | 300 | void i8042_interrupt(int n, istate_t *istate) |
| 1 | jermar | 301 | { |
| 302 | __u8 x; |
||
| 303 | |||
| 304 | trap_virtual_eoi(); |
||
| 894 | jermar | 305 | x = i8042_data_read(); |
| 508 | jermar | 306 | if (x & KEY_RELEASE) |
| 307 | key_released(x ^ KEY_RELEASE); |
||
| 308 | else |
||
| 309 | key_pressed(x); |
||
| 1 | jermar | 310 | } |
| 508 | jermar | 311 | |
| 895 | jermar | 312 | /** Wait until the controller reads its data. */ |
| 313 | void i8042_wait(void) { |
||
| 314 | while (i8042_status_read() & i8042_WAIT_MASK) { |
||
| 315 | /* wait */ |
||
| 316 | } |
||
| 317 | } |
||
| 318 | |||
| 508 | jermar | 319 | /** Process release of key. |
| 320 | * |
||
| 321 | * @param sc Scancode of the key being released. |
||
| 322 | */ |
||
| 323 | void key_released(__u8 sc) |
||
| 324 | { |
||
| 325 | spinlock_lock(&keylock); |
||
| 326 | switch (sc) { |
||
| 327 | case SC_LSHIFT: |
||
| 328 | case SC_RSHIFT: |
||
| 329 | keyflags &= ~PRESSED_SHIFT; |
||
| 330 | break; |
||
| 331 | case SC_CAPSLOCK: |
||
| 332 | keyflags &= ~PRESSED_CAPSLOCK; |
||
| 333 | if (lockflags & LOCKED_CAPSLOCK) |
||
| 334 | lockflags &= ~LOCKED_CAPSLOCK; |
||
| 335 | else |
||
| 336 | lockflags |= LOCKED_CAPSLOCK; |
||
| 337 | break; |
||
| 338 | default: |
||
| 339 | break; |
||
| 340 | } |
||
| 341 | spinlock_unlock(&keylock); |
||
| 342 | } |
||
| 343 | |||
| 344 | /** Process keypress. |
||
| 345 | * |
||
| 346 | * @param sc Scancode of the key being pressed. |
||
| 347 | */ |
||
| 348 | void key_pressed(__u8 sc) |
||
| 349 | { |
||
| 350 | char *map = sc_primary_map; |
||
| 351 | char ascii = sc_primary_map[sc]; |
||
| 352 | bool shift, capslock; |
||
| 353 | bool letter = false; |
||
| 354 | |||
| 355 | spinlock_lock(&keylock); |
||
| 356 | switch (sc) { |
||
| 601 | palkovsky | 357 | case SC_LSHIFT: |
| 358 | case SC_RSHIFT: |
||
| 508 | jermar | 359 | keyflags |= PRESSED_SHIFT; |
| 360 | break; |
||
| 601 | palkovsky | 361 | case SC_CAPSLOCK: |
| 508 | jermar | 362 | keyflags |= PRESSED_CAPSLOCK; |
| 363 | break; |
||
| 601 | palkovsky | 364 | case SC_SPEC_ESCAPE: |
| 365 | break; |
||
| 366 | case SC_LEFTARR: |
||
| 367 | chardev_push_character(&kbrd, 0x1b); |
||
| 368 | chardev_push_character(&kbrd, 0x5b); |
||
| 369 | chardev_push_character(&kbrd, 0x44); |
||
| 370 | break; |
||
| 371 | case SC_RIGHTARR: |
||
| 372 | chardev_push_character(&kbrd, 0x1b); |
||
| 373 | chardev_push_character(&kbrd, 0x5b); |
||
| 374 | chardev_push_character(&kbrd, 0x43); |
||
| 375 | break; |
||
| 376 | case SC_UPARR: |
||
| 377 | chardev_push_character(&kbrd, 0x1b); |
||
| 378 | chardev_push_character(&kbrd, 0x5b); |
||
| 379 | chardev_push_character(&kbrd, 0x41); |
||
| 380 | break; |
||
| 381 | case SC_DOWNARR: |
||
| 382 | chardev_push_character(&kbrd, 0x1b); |
||
| 383 | chardev_push_character(&kbrd, 0x5b); |
||
| 384 | chardev_push_character(&kbrd, 0x42); |
||
| 385 | break; |
||
| 606 | palkovsky | 386 | case SC_HOME: |
| 387 | chardev_push_character(&kbrd, 0x1b); |
||
| 388 | chardev_push_character(&kbrd, 0x4f); |
||
| 389 | chardev_push_character(&kbrd, 0x48); |
||
| 390 | break; |
||
| 391 | case SC_END: |
||
| 392 | chardev_push_character(&kbrd, 0x1b); |
||
| 393 | chardev_push_character(&kbrd, 0x4f); |
||
| 394 | chardev_push_character(&kbrd, 0x46); |
||
| 395 | break; |
||
| 396 | case SC_DELETE: |
||
| 397 | chardev_push_character(&kbrd, 0x1b); |
||
| 398 | chardev_push_character(&kbrd, 0x5b); |
||
| 399 | chardev_push_character(&kbrd, 0x33); |
||
| 400 | chardev_push_character(&kbrd, 0x7e); |
||
| 401 | break; |
||
| 601 | palkovsky | 402 | default: |
| 517 | jermar | 403 | letter = is_lower(ascii); |
| 508 | jermar | 404 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK); |
| 405 | shift = keyflags & PRESSED_SHIFT; |
||
| 406 | if (letter && capslock) |
||
| 407 | shift = !shift; |
||
| 408 | if (shift) |
||
| 409 | map = sc_secondary_map; |
||
| 511 | jermar | 410 | chardev_push_character(&kbrd, map[sc]); |
| 508 | jermar | 411 | break; |
| 412 | } |
||
| 413 | spinlock_unlock(&keylock); |
||
| 414 | } |
||
| 511 | jermar | 415 | |
| 416 | /* Called from getc(). */ |
||
| 575 | palkovsky | 417 | void i8042_resume(chardev_t *d) |
| 511 | jermar | 418 | { |
| 419 | } |
||
| 420 | |||
| 421 | /* Called from getc(). */ |
||
| 575 | palkovsky | 422 | void i8042_suspend(chardev_t *d) |
| 511 | jermar | 423 | { |
| 424 | } |
||
| 878 | vana | 425 | |
| 426 | static __u8 active_read_buff_read(void) |
||
| 427 | { |
||
| 428 | static int i=0; |
||
| 894 | jermar | 429 | i &= (ACTIVE_READ_BUFF_SIZE-1); |
| 430 | if(!active_read_buff[i]) { |
||
| 878 | vana | 431 | return 0; |
| 432 | } |
||
| 433 | return active_read_buff[i++]; |
||
| 434 | } |
||
| 435 | |||
| 436 | static void active_read_buff_write(__u8 ch) |
||
| 437 | { |
||
| 438 | static int i=0; |
||
| 894 | jermar | 439 | active_read_buff[i] = ch; |
| 878 | vana | 440 | i++; |
| 894 | jermar | 441 | i &= (ACTIVE_READ_BUFF_SIZE-1); |
| 878 | vana | 442 | active_read_buff[i]=0; |
| 443 | } |
||
| 444 | |||
| 445 | |||
| 893 | jermar | 446 | static void active_read_key_pressed(__u8 sc) |
| 878 | vana | 447 | { |
| 448 | char *map = sc_primary_map; |
||
| 449 | char ascii = sc_primary_map[sc]; |
||
| 450 | bool shift, capslock; |
||
| 451 | bool letter = false; |
||
| 452 | |||
| 453 | /*spinlock_lock(&keylock);*/ |
||
| 454 | switch (sc) { |
||
| 455 | case SC_LSHIFT: |
||
| 456 | case SC_RSHIFT: |
||
| 457 | keyflags |= PRESSED_SHIFT; |
||
| 458 | break; |
||
| 459 | case SC_CAPSLOCK: |
||
| 460 | keyflags |= PRESSED_CAPSLOCK; |
||
| 461 | break; |
||
| 462 | case SC_SPEC_ESCAPE: |
||
| 463 | break; |
||
| 464 | case SC_LEFTARR: |
||
| 465 | active_read_buff_write(0x1b); |
||
| 466 | active_read_buff_write(0x5b); |
||
| 467 | active_read_buff_write(0x44); |
||
| 468 | break; |
||
| 469 | case SC_RIGHTARR: |
||
| 470 | active_read_buff_write(0x1b); |
||
| 471 | active_read_buff_write(0x5b); |
||
| 472 | active_read_buff_write(0x43); |
||
| 473 | break; |
||
| 474 | case SC_UPARR: |
||
| 475 | active_read_buff_write(0x1b); |
||
| 476 | active_read_buff_write(0x5b); |
||
| 477 | active_read_buff_write(0x41); |
||
| 478 | break; |
||
| 479 | case SC_DOWNARR: |
||
| 480 | active_read_buff_write(0x1b); |
||
| 481 | active_read_buff_write(0x5b); |
||
| 482 | active_read_buff_write(0x42); |
||
| 483 | break; |
||
| 484 | case SC_HOME: |
||
| 485 | active_read_buff_write(0x1b); |
||
| 486 | active_read_buff_write(0x4f); |
||
| 487 | active_read_buff_write(0x48); |
||
| 488 | break; |
||
| 489 | case SC_END: |
||
| 490 | active_read_buff_write(0x1b); |
||
| 491 | active_read_buff_write(0x4f); |
||
| 492 | active_read_buff_write(0x46); |
||
| 493 | break; |
||
| 494 | case SC_DELETE: |
||
| 495 | active_read_buff_write(0x1b); |
||
| 496 | active_read_buff_write(0x5b); |
||
| 497 | active_read_buff_write(0x33); |
||
| 498 | active_read_buff_write(0x7e); |
||
| 499 | break; |
||
| 500 | default: |
||
| 501 | letter = is_lower(ascii); |
||
| 502 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK); |
||
| 503 | shift = keyflags & PRESSED_SHIFT; |
||
| 504 | if (letter && capslock) |
||
| 505 | shift = !shift; |
||
| 506 | if (shift) |
||
| 507 | map = sc_secondary_map; |
||
| 508 | active_read_buff_write(map[sc]); |
||
| 509 | break; |
||
| 510 | } |
||
| 511 | /*spinlock_unlock(&keylock);*/ |
||
| 512 | |||
| 513 | } |
||
| 514 | |||
| 515 | static char key_read(chardev_t *d) |
||
| 516 | { |
||
| 517 | char ch; |
||
| 518 | |||
| 894 | jermar | 519 | while(!(ch = active_read_buff_read())) { |
| 878 | vana | 520 | __u8 x; |
| 894 | jermar | 521 | while (!((x=i8042_status_read() & i8042_BUFFER_FULL_MASK))) |
| 522 | ; |
||
| 523 | x = i8042_data_read(); |
||
| 895 | jermar | 524 | if (x != IGNORE_CODE) { |
| 525 | if (x & KEY_RELEASE) |
||
| 526 | key_released(x ^ KEY_RELEASE); |
||
| 527 | else |
||
| 528 | active_read_key_pressed(x); |
||
| 529 | } |
||
| 878 | vana | 530 | } |
| 531 | return ch; |
||
| 532 | } |
||
| 895 | jermar | 533 | |
| 534 | /** Poll for key press and release events. |
||
| 535 | * |
||
| 536 | * This function can be used to implement keyboard polling. |
||
| 537 | */ |
||
| 538 | void i8042_poll(void) |
||
| 539 | { |
||
| 540 | __u8 x; |
||
| 541 | |||
| 542 | while (((x = i8042_status_read() & i8042_BUFFER_FULL_MASK))) { |
||
| 543 | x = i8042_data_read(); |
||
| 544 | if (x != IGNORE_CODE) { |
||
| 545 | if (x & KEY_RELEASE) |
||
| 546 | key_released(x ^ KEY_RELEASE); |
||
| 547 | else |
||
| 548 | key_pressed(x); |
||
| 549 | } |
||
| 550 | } |
||
| 551 | } |