Rev 534 | Rev 575 | 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 | |||
| 29 | #include <arch/i8042.h> |
||
| 30 | #include <arch/i8259.h> |
||
| 31 | #include <arch/interrupt.h> |
||
| 32 | #include <cpu.h> |
||
| 33 | #include <arch/asm.h> |
||
| 34 | #include <arch.h> |
||
| 35 | #include <print.h> |
||
| 508 | jermar | 36 | #include <synch/spinlock.h> |
| 37 | #include <typedefs.h> |
||
| 511 | jermar | 38 | #include <console/chardev.h> |
| 39 | #include <console/console.h> |
||
| 517 | jermar | 40 | #include <macros.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 | #define i8042_DATA 0x60 |
| 48 | #define i8042_STATUS 0x64 |
||
| 49 | |||
| 50 | /** Keyboard commands. */ |
||
| 51 | #define KBD_ENABLE 0xf4 |
||
| 52 | #define KBD_DISABLE 0xf5 |
||
| 53 | #define KBD_ACK 0xfa |
||
| 54 | |||
| 508 | jermar | 55 | #define SPECIAL '?' |
| 56 | #define KEY_RELEASE 0x80 |
||
| 57 | |||
| 58 | static void key_released(__u8 sc); |
||
| 59 | static void key_pressed(__u8 sc); |
||
| 60 | |||
| 61 | #define PRESSED_SHIFT (1<<0) |
||
| 62 | #define PRESSED_CAPSLOCK (1<<1) |
||
| 63 | #define LOCKED_CAPSLOCK (1<<0) |
||
| 64 | |||
| 509 | jermar | 65 | static spinlock_t keylock; /**< keylock protects keyflags and lockflags. */ |
| 508 | jermar | 66 | static volatile int keyflags; /**< Tracking of multiple keypresses. */ |
| 509 | jermar | 67 | static volatile int lockflags; /**< Tracking of multiple keys lockings. */ |
| 508 | jermar | 68 | |
| 511 | jermar | 69 | static void i8042_suspend(void); |
| 70 | static void i8042_resume(void); |
||
| 71 | |||
| 72 | static chardev_t kbrd; |
||
| 73 | static chardev_operations_t ops = { |
||
| 74 | .suspend = i8042_suspend, |
||
| 75 | .resume = i8042_resume |
||
| 76 | }; |
||
| 77 | |||
| 508 | jermar | 78 | /** Primary meaning of scancodes. */ |
| 79 | static char sc_primary_map[] = { |
||
| 80 | SPECIAL, /* 0x00 */ |
||
| 81 | SPECIAL, /* 0x01 - Esc */ |
||
| 82 | '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', |
||
| 83 | SPECIAL, /* 0x0e - Backspace */ |
||
| 84 | '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', |
||
| 85 | SPECIAL, /* 0x1d - LCtrl */ |
||
| 86 | 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', |
||
| 87 | '`', |
||
| 88 | SPECIAL, /* 0x2a - LShift */ |
||
| 89 | '\\', |
||
| 90 | 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', |
||
| 91 | SPECIAL, /* 0x36 - RShift */ |
||
| 92 | '*', |
||
| 93 | SPECIAL, /* 0x38 - LAlt */ |
||
| 94 | ' ', |
||
| 95 | SPECIAL, /* 0x3a - CapsLock */ |
||
| 96 | SPECIAL, /* 0x3b - F1 */ |
||
| 97 | SPECIAL, /* 0x3c - F2 */ |
||
| 98 | SPECIAL, /* 0x3d - F3 */ |
||
| 99 | SPECIAL, /* 0x3e - F4 */ |
||
| 100 | SPECIAL, /* 0x3f - F5 */ |
||
| 101 | SPECIAL, /* 0x40 - F6 */ |
||
| 102 | SPECIAL, /* 0x41 - F7 */ |
||
| 103 | SPECIAL, /* 0x42 - F8 */ |
||
| 104 | SPECIAL, /* 0x43 - F9 */ |
||
| 105 | SPECIAL, /* 0x44 - F10 */ |
||
| 106 | SPECIAL, /* 0x45 - NumLock */ |
||
| 107 | SPECIAL, /* 0x46 - ScrollLock */ |
||
| 108 | '7', '8', '9', '-', |
||
| 109 | '4', '5', '6', '+', |
||
| 110 | '1', '2', '3', |
||
| 111 | '0', '.', |
||
| 112 | SPECIAL, /* 0x54 - Alt-SysRq */ |
||
| 113 | SPECIAL, /* 0x55 - F11/F12/PF1/FN */ |
||
| 114 | SPECIAL, /* 0x56 - unlabelled key next to LAlt */ |
||
| 115 | SPECIAL, /* 0x57 - F11 */ |
||
| 116 | SPECIAL, /* 0x58 - F12 */ |
||
| 117 | SPECIAL, /* 0x59 */ |
||
| 118 | SPECIAL, /* 0x5a */ |
||
| 119 | SPECIAL, /* 0x5b */ |
||
| 120 | SPECIAL, /* 0x5c */ |
||
| 121 | SPECIAL, /* 0x5d */ |
||
| 122 | SPECIAL, /* 0x5e */ |
||
| 123 | SPECIAL, /* 0x5f */ |
||
| 124 | SPECIAL, /* 0x60 */ |
||
| 125 | SPECIAL, /* 0x61 */ |
||
| 126 | SPECIAL, /* 0x62 */ |
||
| 127 | SPECIAL, /* 0x63 */ |
||
| 128 | SPECIAL, /* 0x64 */ |
||
| 129 | SPECIAL, /* 0x65 */ |
||
| 130 | SPECIAL, /* 0x66 */ |
||
| 131 | SPECIAL, /* 0x67 */ |
||
| 132 | SPECIAL, /* 0x68 */ |
||
| 133 | SPECIAL, /* 0x69 */ |
||
| 134 | SPECIAL, /* 0x6a */ |
||
| 135 | SPECIAL, /* 0x6b */ |
||
| 136 | SPECIAL, /* 0x6c */ |
||
| 137 | SPECIAL, /* 0x6d */ |
||
| 138 | SPECIAL, /* 0x6e */ |
||
| 139 | SPECIAL, /* 0x6f */ |
||
| 140 | SPECIAL, /* 0x70 */ |
||
| 141 | SPECIAL, /* 0x71 */ |
||
| 142 | SPECIAL, /* 0x72 */ |
||
| 143 | SPECIAL, /* 0x73 */ |
||
| 144 | SPECIAL, /* 0x74 */ |
||
| 145 | SPECIAL, /* 0x75 */ |
||
| 146 | SPECIAL, /* 0x76 */ |
||
| 147 | SPECIAL, /* 0x77 */ |
||
| 148 | SPECIAL, /* 0x78 */ |
||
| 149 | SPECIAL, /* 0x79 */ |
||
| 150 | SPECIAL, /* 0x7a */ |
||
| 151 | SPECIAL, /* 0x7b */ |
||
| 152 | SPECIAL, /* 0x7c */ |
||
| 153 | SPECIAL, /* 0x7d */ |
||
| 154 | SPECIAL, /* 0x7e */ |
||
| 155 | SPECIAL, /* 0x7f */ |
||
| 156 | }; |
||
| 157 | |||
| 158 | /** Secondary meaning of scancodes. */ |
||
| 159 | static char sc_secondary_map[] = { |
||
| 160 | SPECIAL, /* 0x00 */ |
||
| 161 | SPECIAL, /* 0x01 - Esc */ |
||
| 162 | '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', |
||
| 163 | SPECIAL, /* 0x0e - Backspace */ |
||
| 164 | '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n', |
||
| 165 | SPECIAL, /* 0x1d - LCtrl */ |
||
| 166 | 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', |
||
| 167 | '~', |
||
| 168 | SPECIAL, /* 0x2a - LShift */ |
||
| 169 | '|', |
||
| 170 | 'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?', |
||
| 171 | SPECIAL, /* 0x36 - RShift */ |
||
| 172 | '*', |
||
| 173 | SPECIAL, /* 0x38 - LAlt */ |
||
| 174 | ' ', |
||
| 175 | SPECIAL, /* 0x3a - CapsLock */ |
||
| 176 | SPECIAL, /* 0x3b - F1 */ |
||
| 177 | SPECIAL, /* 0x3c - F2 */ |
||
| 178 | SPECIAL, /* 0x3d - F3 */ |
||
| 179 | SPECIAL, /* 0x3e - F4 */ |
||
| 180 | SPECIAL, /* 0x3f - F5 */ |
||
| 181 | SPECIAL, /* 0x40 - F6 */ |
||
| 182 | SPECIAL, /* 0x41 - F7 */ |
||
| 183 | SPECIAL, /* 0x42 - F8 */ |
||
| 184 | SPECIAL, /* 0x43 - F9 */ |
||
| 185 | SPECIAL, /* 0x44 - F10 */ |
||
| 186 | SPECIAL, /* 0x45 - NumLock */ |
||
| 187 | SPECIAL, /* 0x46 - ScrollLock */ |
||
| 188 | '7', '8', '9', '-', |
||
| 189 | '4', '5', '6', '+', |
||
| 190 | '1', '2', '3', |
||
| 191 | '0', '.', |
||
| 192 | SPECIAL, /* 0x54 - Alt-SysRq */ |
||
| 193 | SPECIAL, /* 0x55 - F11/F12/PF1/FN */ |
||
| 194 | SPECIAL, /* 0x56 - unlabelled key next to LAlt */ |
||
| 195 | SPECIAL, /* 0x57 - F11 */ |
||
| 196 | SPECIAL, /* 0x58 - F12 */ |
||
| 197 | SPECIAL, /* 0x59 */ |
||
| 198 | SPECIAL, /* 0x5a */ |
||
| 199 | SPECIAL, /* 0x5b */ |
||
| 200 | SPECIAL, /* 0x5c */ |
||
| 201 | SPECIAL, /* 0x5d */ |
||
| 202 | SPECIAL, /* 0x5e */ |
||
| 203 | SPECIAL, /* 0x5f */ |
||
| 204 | SPECIAL, /* 0x60 */ |
||
| 205 | SPECIAL, /* 0x61 */ |
||
| 206 | SPECIAL, /* 0x62 */ |
||
| 207 | SPECIAL, /* 0x63 */ |
||
| 208 | SPECIAL, /* 0x64 */ |
||
| 209 | SPECIAL, /* 0x65 */ |
||
| 210 | SPECIAL, /* 0x66 */ |
||
| 211 | SPECIAL, /* 0x67 */ |
||
| 212 | SPECIAL, /* 0x68 */ |
||
| 213 | SPECIAL, /* 0x69 */ |
||
| 214 | SPECIAL, /* 0x6a */ |
||
| 215 | SPECIAL, /* 0x6b */ |
||
| 216 | SPECIAL, /* 0x6c */ |
||
| 217 | SPECIAL, /* 0x6d */ |
||
| 218 | SPECIAL, /* 0x6e */ |
||
| 219 | SPECIAL, /* 0x6f */ |
||
| 220 | SPECIAL, /* 0x70 */ |
||
| 221 | SPECIAL, /* 0x71 */ |
||
| 222 | SPECIAL, /* 0x72 */ |
||
| 223 | SPECIAL, /* 0x73 */ |
||
| 224 | SPECIAL, /* 0x74 */ |
||
| 225 | SPECIAL, /* 0x75 */ |
||
| 226 | SPECIAL, /* 0x76 */ |
||
| 227 | SPECIAL, /* 0x77 */ |
||
| 228 | SPECIAL, /* 0x78 */ |
||
| 229 | SPECIAL, /* 0x79 */ |
||
| 230 | SPECIAL, /* 0x7a */ |
||
| 231 | SPECIAL, /* 0x7b */ |
||
| 232 | SPECIAL, /* 0x7c */ |
||
| 233 | SPECIAL, /* 0x7d */ |
||
| 234 | SPECIAL, /* 0x7e */ |
||
| 235 | SPECIAL, /* 0x7f */ |
||
| 236 | }; |
||
| 237 | |||
| 238 | /** Initialize i8042. */ |
||
| 1 | jermar | 239 | void i8042_init(void) |
| 240 | { |
||
| 241 | trap_register(VECTOR_KBD, i8042_interrupt); |
||
| 512 | jermar | 242 | trap_virtual_enable_irqs(1<<IRQ_KBD); |
| 552 | palkovsky | 243 | spinlock_initialize(&keylock, "i8042_lock"); |
| 511 | jermar | 244 | chardev_initialize(&kbrd, &ops); |
| 245 | stdin = &kbrd; |
||
| 1 | jermar | 246 | } |
| 247 | |||
| 508 | jermar | 248 | /** Process i8042 interrupt. |
| 249 | * |
||
| 250 | * @param n Interrupt vector. |
||
| 251 | * @param stack Interrupted stack. |
||
| 252 | */ |
||
| 206 | palkovsky | 253 | void i8042_interrupt(__u8 n, __native stack[]) |
| 1 | jermar | 254 | { |
| 255 | __u8 x; |
||
| 256 | |||
| 257 | trap_virtual_eoi(); |
||
| 512 | jermar | 258 | x = inb(i8042_DATA); |
| 508 | jermar | 259 | if (x & KEY_RELEASE) |
| 260 | key_released(x ^ KEY_RELEASE); |
||
| 261 | else |
||
| 262 | key_pressed(x); |
||
| 1 | jermar | 263 | } |
| 508 | jermar | 264 | |
| 265 | /** Process release of key. |
||
| 266 | * |
||
| 267 | * @param sc Scancode of the key being released. |
||
| 268 | */ |
||
| 269 | void key_released(__u8 sc) |
||
| 270 | { |
||
| 271 | spinlock_lock(&keylock); |
||
| 272 | switch (sc) { |
||
| 273 | case SC_LSHIFT: |
||
| 274 | case SC_RSHIFT: |
||
| 275 | keyflags &= ~PRESSED_SHIFT; |
||
| 276 | break; |
||
| 277 | case SC_CAPSLOCK: |
||
| 278 | keyflags &= ~PRESSED_CAPSLOCK; |
||
| 279 | if (lockflags & LOCKED_CAPSLOCK) |
||
| 280 | lockflags &= ~LOCKED_CAPSLOCK; |
||
| 281 | else |
||
| 282 | lockflags |= LOCKED_CAPSLOCK; |
||
| 283 | break; |
||
| 284 | default: |
||
| 285 | break; |
||
| 286 | } |
||
| 287 | spinlock_unlock(&keylock); |
||
| 288 | } |
||
| 289 | |||
| 290 | /** Process keypress. |
||
| 291 | * |
||
| 292 | * @param sc Scancode of the key being pressed. |
||
| 293 | */ |
||
| 294 | void key_pressed(__u8 sc) |
||
| 295 | { |
||
| 296 | char *map = sc_primary_map; |
||
| 297 | char ascii = sc_primary_map[sc]; |
||
| 298 | bool shift, capslock; |
||
| 299 | bool letter = false; |
||
| 300 | |||
| 301 | spinlock_lock(&keylock); |
||
| 302 | switch (sc) { |
||
| 303 | case SC_LSHIFT: |
||
| 304 | case SC_RSHIFT: |
||
| 305 | keyflags |= PRESSED_SHIFT; |
||
| 306 | break; |
||
| 307 | case SC_CAPSLOCK: |
||
| 308 | keyflags |= PRESSED_CAPSLOCK; |
||
| 309 | break; |
||
| 310 | default: |
||
| 517 | jermar | 311 | letter = is_lower(ascii); |
| 508 | jermar | 312 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK); |
| 313 | shift = keyflags & PRESSED_SHIFT; |
||
| 314 | if (letter && capslock) |
||
| 315 | shift = !shift; |
||
| 316 | if (shift) |
||
| 317 | map = sc_secondary_map; |
||
| 511 | jermar | 318 | chardev_push_character(&kbrd, map[sc]); |
| 508 | jermar | 319 | break; |
| 320 | } |
||
| 321 | spinlock_unlock(&keylock); |
||
| 322 | } |
||
| 511 | jermar | 323 | |
| 324 | /* Called from getc(). */ |
||
| 325 | void i8042_resume(void) |
||
| 326 | { |
||
| 327 | } |
||
| 328 | |||
| 329 | /* Called from getc(). */ |
||
| 330 | void i8042_suspend(void) |
||
| 331 | { |
||
| 332 | } |