1 /* 2 * QEMU PS/2 keyboard/mouse emulation 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 #include "hw/hw.h" 25 #include "hw/input/ps2.h" 26 #include "ui/console.h" 27 #include "ui/input.h" 28 #include "sysemu/sysemu.h" 29 30 #include "trace.h" 31 32 /* debug PC keyboard */ 33 //#define DEBUG_KBD 34 35 /* debug PC keyboard : only mouse */ 36 //#define DEBUG_MOUSE 37 38 /* Keyboard Commands */ 39 #define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */ 40 #define KBD_CMD_ECHO 0xEE 41 #define KBD_CMD_SCANCODE 0xF0 /* Get/set scancode set */ 42 #define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */ 43 #define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */ 44 #define KBD_CMD_ENABLE 0xF4 /* Enable scanning */ 45 #define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */ 46 #define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */ 47 #define KBD_CMD_RESET 0xFF /* Reset */ 48 49 /* Keyboard Replies */ 50 #define KBD_REPLY_POR 0xAA /* Power on reset */ 51 #define KBD_REPLY_ID 0xAB /* Keyboard ID */ 52 #define KBD_REPLY_ACK 0xFA /* Command ACK */ 53 #define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */ 54 55 /* Mouse Commands */ 56 #define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */ 57 #define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */ 58 #define AUX_SET_RES 0xE8 /* Set resolution */ 59 #define AUX_GET_SCALE 0xE9 /* Get scaling factor */ 60 #define AUX_SET_STREAM 0xEA /* Set stream mode */ 61 #define AUX_POLL 0xEB /* Poll */ 62 #define AUX_RESET_WRAP 0xEC /* Reset wrap mode */ 63 #define AUX_SET_WRAP 0xEE /* Set wrap mode */ 64 #define AUX_SET_REMOTE 0xF0 /* Set remote mode */ 65 #define AUX_GET_TYPE 0xF2 /* Get type */ 66 #define AUX_SET_SAMPLE 0xF3 /* Set sample rate */ 67 #define AUX_ENABLE_DEV 0xF4 /* Enable aux device */ 68 #define AUX_DISABLE_DEV 0xF5 /* Disable aux device */ 69 #define AUX_SET_DEFAULT 0xF6 70 #define AUX_RESET 0xFF /* Reset aux device */ 71 #define AUX_ACK 0xFA /* Command byte ACK. */ 72 73 #define MOUSE_STATUS_REMOTE 0x40 74 #define MOUSE_STATUS_ENABLED 0x20 75 #define MOUSE_STATUS_SCALE21 0x10 76 77 #define PS2_QUEUE_SIZE 16 /* Buffer size required by PS/2 protocol */ 78 79 typedef struct { 80 /* Keep the data array 256 bytes long, which compatibility 81 with older qemu versions. */ 82 uint8_t data[256]; 83 int rptr, wptr, count; 84 } PS2Queue; 85 86 typedef struct { 87 PS2Queue queue; 88 int32_t write_cmd; 89 void (*update_irq)(void *, int); 90 void *update_arg; 91 } PS2State; 92 93 typedef struct { 94 PS2State common; 95 int scan_enabled; 96 /* QEMU uses translated PC scancodes internally. To avoid multiple 97 conversions we do the translation (if any) in the PS/2 emulation 98 not the keyboard controller. */ 99 int translate; 100 int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */ 101 int ledstate; 102 } PS2KbdState; 103 104 typedef struct { 105 PS2State common; 106 uint8_t mouse_status; 107 uint8_t mouse_resolution; 108 uint8_t mouse_sample_rate; 109 uint8_t mouse_wrap; 110 uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */ 111 uint8_t mouse_detect_state; 112 int mouse_dx; /* current values, needed for 'poll' mode */ 113 int mouse_dy; 114 int mouse_dz; 115 uint8_t mouse_buttons; 116 } PS2MouseState; 117 118 /* Table to convert from PC scancodes to raw scancodes. */ 119 static const unsigned char ps2_raw_keycode[128] = { 120 0, 118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85, 102, 13, 121 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27, 122 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42, 123 50, 49, 58, 65, 73, 74, 89, 124, 17, 41, 88, 5, 6, 4, 12, 3, 124 11, 2, 10, 1, 9, 119, 126, 108, 117, 125, 123, 107, 115, 116, 121, 105, 125 114, 122, 112, 113, 127, 96, 97, 120, 7, 15, 23, 31, 39, 47, 55, 63, 126 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87, 111, 127 19, 25, 57, 81, 83, 92, 95, 98, 99, 100, 101, 103, 104, 106, 109, 110 128 }; 129 static const unsigned char ps2_raw_keycode_set3[128] = { 130 0, 8, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85, 102, 13, 131 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 17, 28, 27, 132 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 92, 26, 34, 33, 42, 133 50, 49, 58, 65, 73, 74, 89, 126, 25, 41, 20, 7, 15, 23, 31, 39, 134 47, 2, 63, 71, 79, 118, 95, 108, 117, 125, 132, 107, 115, 116, 124, 105, 135 114, 122, 112, 113, 127, 96, 97, 86, 94, 15, 23, 31, 39, 47, 55, 63, 136 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87, 111, 137 19, 25, 57, 81, 83, 92, 95, 98, 99, 100, 101, 103, 104, 106, 109, 110 138 }; 139 140 void ps2_queue(void *opaque, int b) 141 { 142 PS2State *s = (PS2State *)opaque; 143 PS2Queue *q = &s->queue; 144 145 if (q->count >= PS2_QUEUE_SIZE - 1) 146 return; 147 q->data[q->wptr] = b; 148 if (++q->wptr == PS2_QUEUE_SIZE) 149 q->wptr = 0; 150 q->count++; 151 s->update_irq(s->update_arg, 1); 152 } 153 154 /* 155 keycode is expressed as follow: 156 bit 7 - 0 key pressed, 1 = key released 157 bits 6-0 - translated scancode set 2 158 */ 159 static void ps2_put_keycode(void *opaque, int keycode) 160 { 161 PS2KbdState *s = opaque; 162 163 trace_ps2_put_keycode(opaque, keycode); 164 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER); 165 /* XXX: add support for scancode set 1 */ 166 if (!s->translate && keycode < 0xe0 && s->scancode_set > 1) { 167 if (keycode & 0x80) { 168 ps2_queue(&s->common, 0xf0); 169 } 170 if (s->scancode_set == 2) { 171 keycode = ps2_raw_keycode[keycode & 0x7f]; 172 } else if (s->scancode_set == 3) { 173 keycode = ps2_raw_keycode_set3[keycode & 0x7f]; 174 } 175 } 176 ps2_queue(&s->common, keycode); 177 } 178 179 static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src, 180 InputEvent *evt) 181 { 182 PS2KbdState *s = (PS2KbdState *)dev; 183 int scancodes[3], i, count; 184 185 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER); 186 count = qemu_input_key_value_to_scancode(evt->key->key, 187 evt->key->down, 188 scancodes); 189 for (i = 0; i < count; i++) { 190 ps2_put_keycode(s, scancodes[i]); 191 } 192 } 193 194 uint32_t ps2_read_data(void *opaque) 195 { 196 PS2State *s = (PS2State *)opaque; 197 PS2Queue *q; 198 int val, index; 199 200 trace_ps2_read_data(opaque); 201 q = &s->queue; 202 if (q->count == 0) { 203 /* NOTE: if no data left, we return the last keyboard one 204 (needed for EMM386) */ 205 /* XXX: need a timer to do things correctly */ 206 index = q->rptr - 1; 207 if (index < 0) 208 index = PS2_QUEUE_SIZE - 1; 209 val = q->data[index]; 210 } else { 211 val = q->data[q->rptr]; 212 if (++q->rptr == PS2_QUEUE_SIZE) 213 q->rptr = 0; 214 q->count--; 215 /* reading deasserts IRQ */ 216 s->update_irq(s->update_arg, 0); 217 /* reassert IRQs if data left */ 218 s->update_irq(s->update_arg, q->count != 0); 219 } 220 return val; 221 } 222 223 static void ps2_set_ledstate(PS2KbdState *s, int ledstate) 224 { 225 trace_ps2_set_ledstate(s, ledstate); 226 s->ledstate = ledstate; 227 kbd_put_ledstate(ledstate); 228 } 229 230 static void ps2_reset_keyboard(PS2KbdState *s) 231 { 232 trace_ps2_reset_keyboard(s); 233 s->scan_enabled = 1; 234 s->scancode_set = 2; 235 ps2_set_ledstate(s, 0); 236 } 237 238 void ps2_write_keyboard(void *opaque, int val) 239 { 240 PS2KbdState *s = (PS2KbdState *)opaque; 241 242 trace_ps2_write_keyboard(opaque, val); 243 switch(s->common.write_cmd) { 244 default: 245 case -1: 246 switch(val) { 247 case 0x00: 248 ps2_queue(&s->common, KBD_REPLY_ACK); 249 break; 250 case 0x05: 251 ps2_queue(&s->common, KBD_REPLY_RESEND); 252 break; 253 case KBD_CMD_GET_ID: 254 ps2_queue(&s->common, KBD_REPLY_ACK); 255 /* We emulate a MF2 AT keyboard here */ 256 ps2_queue(&s->common, KBD_REPLY_ID); 257 if (s->translate) 258 ps2_queue(&s->common, 0x41); 259 else 260 ps2_queue(&s->common, 0x83); 261 break; 262 case KBD_CMD_ECHO: 263 ps2_queue(&s->common, KBD_CMD_ECHO); 264 break; 265 case KBD_CMD_ENABLE: 266 s->scan_enabled = 1; 267 ps2_queue(&s->common, KBD_REPLY_ACK); 268 break; 269 case KBD_CMD_SCANCODE: 270 case KBD_CMD_SET_LEDS: 271 case KBD_CMD_SET_RATE: 272 s->common.write_cmd = val; 273 ps2_queue(&s->common, KBD_REPLY_ACK); 274 break; 275 case KBD_CMD_RESET_DISABLE: 276 ps2_reset_keyboard(s); 277 s->scan_enabled = 0; 278 ps2_queue(&s->common, KBD_REPLY_ACK); 279 break; 280 case KBD_CMD_RESET_ENABLE: 281 ps2_reset_keyboard(s); 282 s->scan_enabled = 1; 283 ps2_queue(&s->common, KBD_REPLY_ACK); 284 break; 285 case KBD_CMD_RESET: 286 ps2_reset_keyboard(s); 287 ps2_queue(&s->common, KBD_REPLY_ACK); 288 ps2_queue(&s->common, KBD_REPLY_POR); 289 break; 290 default: 291 ps2_queue(&s->common, KBD_REPLY_ACK); 292 break; 293 } 294 break; 295 case KBD_CMD_SCANCODE: 296 if (val == 0) { 297 if (s->scancode_set == 1) 298 ps2_put_keycode(s, 0x43); 299 else if (s->scancode_set == 2) 300 ps2_put_keycode(s, 0x41); 301 else if (s->scancode_set == 3) 302 ps2_put_keycode(s, 0x3f); 303 } else { 304 if (val >= 1 && val <= 3) 305 s->scancode_set = val; 306 ps2_queue(&s->common, KBD_REPLY_ACK); 307 } 308 s->common.write_cmd = -1; 309 break; 310 case KBD_CMD_SET_LEDS: 311 ps2_set_ledstate(s, val); 312 ps2_queue(&s->common, KBD_REPLY_ACK); 313 s->common.write_cmd = -1; 314 break; 315 case KBD_CMD_SET_RATE: 316 ps2_queue(&s->common, KBD_REPLY_ACK); 317 s->common.write_cmd = -1; 318 break; 319 } 320 } 321 322 /* Set the scancode translation mode. 323 0 = raw scancodes. 324 1 = translated scancodes (used by qemu internally). */ 325 326 void ps2_keyboard_set_translation(void *opaque, int mode) 327 { 328 PS2KbdState *s = (PS2KbdState *)opaque; 329 trace_ps2_keyboard_set_translation(opaque, mode); 330 s->translate = mode; 331 } 332 333 static void ps2_mouse_send_packet(PS2MouseState *s) 334 { 335 unsigned int b; 336 int dx1, dy1, dz1; 337 338 dx1 = s->mouse_dx; 339 dy1 = s->mouse_dy; 340 dz1 = s->mouse_dz; 341 /* XXX: increase range to 8 bits ? */ 342 if (dx1 > 127) 343 dx1 = 127; 344 else if (dx1 < -127) 345 dx1 = -127; 346 if (dy1 > 127) 347 dy1 = 127; 348 else if (dy1 < -127) 349 dy1 = -127; 350 b = 0x08 | ((dx1 < 0) << 4) | ((dy1 < 0) << 5) | (s->mouse_buttons & 0x07); 351 ps2_queue(&s->common, b); 352 ps2_queue(&s->common, dx1 & 0xff); 353 ps2_queue(&s->common, dy1 & 0xff); 354 /* extra byte for IMPS/2 or IMEX */ 355 switch(s->mouse_type) { 356 default: 357 break; 358 case 3: 359 if (dz1 > 127) 360 dz1 = 127; 361 else if (dz1 < -127) 362 dz1 = -127; 363 ps2_queue(&s->common, dz1 & 0xff); 364 break; 365 case 4: 366 if (dz1 > 7) 367 dz1 = 7; 368 else if (dz1 < -7) 369 dz1 = -7; 370 b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1); 371 ps2_queue(&s->common, b); 372 break; 373 } 374 375 trace_ps2_mouse_send_packet(s, dx1, dy1, dz1, b); 376 /* update deltas */ 377 s->mouse_dx -= dx1; 378 s->mouse_dy -= dy1; 379 s->mouse_dz -= dz1; 380 } 381 382 static void ps2_mouse_event(DeviceState *dev, QemuConsole *src, 383 InputEvent *evt) 384 { 385 static const int bmap[INPUT_BUTTON_MAX] = { 386 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON, 387 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON, 388 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON, 389 }; 390 PS2MouseState *s = (PS2MouseState *)dev; 391 392 /* check if deltas are recorded when disabled */ 393 if (!(s->mouse_status & MOUSE_STATUS_ENABLED)) 394 return; 395 396 switch (evt->kind) { 397 case INPUT_EVENT_KIND_REL: 398 if (evt->rel->axis == INPUT_AXIS_X) { 399 s->mouse_dx += evt->rel->value; 400 } else if (evt->rel->axis == INPUT_AXIS_Y) { 401 s->mouse_dy -= evt->rel->value; 402 } 403 break; 404 405 case INPUT_EVENT_KIND_BTN: 406 if (evt->btn->down) { 407 s->mouse_buttons |= bmap[evt->btn->button]; 408 if (evt->btn->button == INPUT_BUTTON_WHEEL_UP) { 409 s->mouse_dz--; 410 } else if (evt->btn->button == INPUT_BUTTON_WHEEL_DOWN) { 411 s->mouse_dz++; 412 } 413 } else { 414 s->mouse_buttons &= ~bmap[evt->btn->button]; 415 } 416 break; 417 418 default: 419 /* keep gcc happy */ 420 break; 421 } 422 } 423 424 static void ps2_mouse_sync(DeviceState *dev) 425 { 426 PS2MouseState *s = (PS2MouseState *)dev; 427 428 if (s->mouse_buttons) { 429 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER); 430 } 431 if (!(s->mouse_status & MOUSE_STATUS_REMOTE)) { 432 while (s->common.queue.count < PS2_QUEUE_SIZE - 4) { 433 /* if not remote, send event. Multiple events are sent if 434 too big deltas */ 435 ps2_mouse_send_packet(s); 436 if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0) 437 break; 438 } 439 } 440 } 441 442 void ps2_mouse_fake_event(void *opaque) 443 { 444 PS2MouseState *s = opaque; 445 trace_ps2_mouse_fake_event(opaque); 446 s->mouse_dx++; 447 ps2_mouse_sync(opaque); 448 } 449 450 void ps2_write_mouse(void *opaque, int val) 451 { 452 PS2MouseState *s = (PS2MouseState *)opaque; 453 454 trace_ps2_write_mouse(opaque, val); 455 #ifdef DEBUG_MOUSE 456 printf("kbd: write mouse 0x%02x\n", val); 457 #endif 458 switch(s->common.write_cmd) { 459 default: 460 case -1: 461 /* mouse command */ 462 if (s->mouse_wrap) { 463 if (val == AUX_RESET_WRAP) { 464 s->mouse_wrap = 0; 465 ps2_queue(&s->common, AUX_ACK); 466 return; 467 } else if (val != AUX_RESET) { 468 ps2_queue(&s->common, val); 469 return; 470 } 471 } 472 switch(val) { 473 case AUX_SET_SCALE11: 474 s->mouse_status &= ~MOUSE_STATUS_SCALE21; 475 ps2_queue(&s->common, AUX_ACK); 476 break; 477 case AUX_SET_SCALE21: 478 s->mouse_status |= MOUSE_STATUS_SCALE21; 479 ps2_queue(&s->common, AUX_ACK); 480 break; 481 case AUX_SET_STREAM: 482 s->mouse_status &= ~MOUSE_STATUS_REMOTE; 483 ps2_queue(&s->common, AUX_ACK); 484 break; 485 case AUX_SET_WRAP: 486 s->mouse_wrap = 1; 487 ps2_queue(&s->common, AUX_ACK); 488 break; 489 case AUX_SET_REMOTE: 490 s->mouse_status |= MOUSE_STATUS_REMOTE; 491 ps2_queue(&s->common, AUX_ACK); 492 break; 493 case AUX_GET_TYPE: 494 ps2_queue(&s->common, AUX_ACK); 495 ps2_queue(&s->common, s->mouse_type); 496 break; 497 case AUX_SET_RES: 498 case AUX_SET_SAMPLE: 499 s->common.write_cmd = val; 500 ps2_queue(&s->common, AUX_ACK); 501 break; 502 case AUX_GET_SCALE: 503 ps2_queue(&s->common, AUX_ACK); 504 ps2_queue(&s->common, s->mouse_status); 505 ps2_queue(&s->common, s->mouse_resolution); 506 ps2_queue(&s->common, s->mouse_sample_rate); 507 break; 508 case AUX_POLL: 509 ps2_queue(&s->common, AUX_ACK); 510 ps2_mouse_send_packet(s); 511 break; 512 case AUX_ENABLE_DEV: 513 s->mouse_status |= MOUSE_STATUS_ENABLED; 514 ps2_queue(&s->common, AUX_ACK); 515 break; 516 case AUX_DISABLE_DEV: 517 s->mouse_status &= ~MOUSE_STATUS_ENABLED; 518 ps2_queue(&s->common, AUX_ACK); 519 break; 520 case AUX_SET_DEFAULT: 521 s->mouse_sample_rate = 100; 522 s->mouse_resolution = 2; 523 s->mouse_status = 0; 524 ps2_queue(&s->common, AUX_ACK); 525 break; 526 case AUX_RESET: 527 s->mouse_sample_rate = 100; 528 s->mouse_resolution = 2; 529 s->mouse_status = 0; 530 s->mouse_type = 0; 531 ps2_queue(&s->common, AUX_ACK); 532 ps2_queue(&s->common, 0xaa); 533 ps2_queue(&s->common, s->mouse_type); 534 break; 535 default: 536 break; 537 } 538 break; 539 case AUX_SET_SAMPLE: 540 s->mouse_sample_rate = val; 541 /* detect IMPS/2 or IMEX */ 542 switch(s->mouse_detect_state) { 543 default: 544 case 0: 545 if (val == 200) 546 s->mouse_detect_state = 1; 547 break; 548 case 1: 549 if (val == 100) 550 s->mouse_detect_state = 2; 551 else if (val == 200) 552 s->mouse_detect_state = 3; 553 else 554 s->mouse_detect_state = 0; 555 break; 556 case 2: 557 if (val == 80) 558 s->mouse_type = 3; /* IMPS/2 */ 559 s->mouse_detect_state = 0; 560 break; 561 case 3: 562 if (val == 80) 563 s->mouse_type = 4; /* IMEX */ 564 s->mouse_detect_state = 0; 565 break; 566 } 567 ps2_queue(&s->common, AUX_ACK); 568 s->common.write_cmd = -1; 569 break; 570 case AUX_SET_RES: 571 s->mouse_resolution = val; 572 ps2_queue(&s->common, AUX_ACK); 573 s->common.write_cmd = -1; 574 break; 575 } 576 } 577 578 static void ps2_common_reset(PS2State *s) 579 { 580 PS2Queue *q; 581 s->write_cmd = -1; 582 q = &s->queue; 583 q->rptr = 0; 584 q->wptr = 0; 585 q->count = 0; 586 s->update_irq(s->update_arg, 0); 587 } 588 589 static void ps2_common_post_load(PS2State *s) 590 { 591 PS2Queue *q = &s->queue; 592 int size; 593 int i; 594 int tmp_data[PS2_QUEUE_SIZE]; 595 596 /* set the useful data buffer queue size, < PS2_QUEUE_SIZE */ 597 size = q->count > PS2_QUEUE_SIZE ? 0 : q->count; 598 599 /* move the queue elements to the start of data array */ 600 if (size > 0) { 601 for (i = 0; i < size; i++) { 602 /* move the queue elements to the temporary buffer */ 603 tmp_data[i] = q->data[q->rptr]; 604 if (++q->rptr == 256) { 605 q->rptr = 0; 606 } 607 } 608 memcpy(q->data, tmp_data, size); 609 } 610 /* reset rptr/wptr/count */ 611 q->rptr = 0; 612 q->wptr = size; 613 q->count = size; 614 s->update_irq(s->update_arg, q->count != 0); 615 } 616 617 static void ps2_kbd_reset(void *opaque) 618 { 619 PS2KbdState *s = (PS2KbdState *) opaque; 620 621 trace_ps2_kbd_reset(opaque); 622 ps2_common_reset(&s->common); 623 s->scan_enabled = 0; 624 s->translate = 0; 625 s->scancode_set = 0; 626 } 627 628 static void ps2_mouse_reset(void *opaque) 629 { 630 PS2MouseState *s = (PS2MouseState *) opaque; 631 632 trace_ps2_mouse_reset(opaque); 633 ps2_common_reset(&s->common); 634 s->mouse_status = 0; 635 s->mouse_resolution = 0; 636 s->mouse_sample_rate = 0; 637 s->mouse_wrap = 0; 638 s->mouse_type = 0; 639 s->mouse_detect_state = 0; 640 s->mouse_dx = 0; 641 s->mouse_dy = 0; 642 s->mouse_dz = 0; 643 s->mouse_buttons = 0; 644 } 645 646 static const VMStateDescription vmstate_ps2_common = { 647 .name = "PS2 Common State", 648 .version_id = 3, 649 .minimum_version_id = 2, 650 .fields = (VMStateField[]) { 651 VMSTATE_INT32(write_cmd, PS2State), 652 VMSTATE_INT32(queue.rptr, PS2State), 653 VMSTATE_INT32(queue.wptr, PS2State), 654 VMSTATE_INT32(queue.count, PS2State), 655 VMSTATE_BUFFER(queue.data, PS2State), 656 VMSTATE_END_OF_LIST() 657 } 658 }; 659 660 static bool ps2_keyboard_ledstate_needed(void *opaque) 661 { 662 PS2KbdState *s = opaque; 663 664 return s->ledstate != 0; /* 0 is default state */ 665 } 666 667 static int ps2_kbd_ledstate_post_load(void *opaque, int version_id) 668 { 669 PS2KbdState *s = opaque; 670 671 kbd_put_ledstate(s->ledstate); 672 return 0; 673 } 674 675 static const VMStateDescription vmstate_ps2_keyboard_ledstate = { 676 .name = "ps2kbd/ledstate", 677 .version_id = 3, 678 .minimum_version_id = 2, 679 .post_load = ps2_kbd_ledstate_post_load, 680 .needed = ps2_keyboard_ledstate_needed, 681 .fields = (VMStateField[]) { 682 VMSTATE_INT32(ledstate, PS2KbdState), 683 VMSTATE_END_OF_LIST() 684 } 685 }; 686 687 static int ps2_kbd_post_load(void* opaque, int version_id) 688 { 689 PS2KbdState *s = (PS2KbdState*)opaque; 690 PS2State *ps2 = &s->common; 691 692 if (version_id == 2) 693 s->scancode_set=2; 694 695 ps2_common_post_load(ps2); 696 697 return 0; 698 } 699 700 static void ps2_kbd_pre_save(void *opaque) 701 { 702 PS2KbdState *s = (PS2KbdState *)opaque; 703 PS2State *ps2 = &s->common; 704 705 ps2_common_post_load(ps2); 706 } 707 708 static const VMStateDescription vmstate_ps2_keyboard = { 709 .name = "ps2kbd", 710 .version_id = 3, 711 .minimum_version_id = 2, 712 .post_load = ps2_kbd_post_load, 713 .pre_save = ps2_kbd_pre_save, 714 .fields = (VMStateField[]) { 715 VMSTATE_STRUCT(common, PS2KbdState, 0, vmstate_ps2_common, PS2State), 716 VMSTATE_INT32(scan_enabled, PS2KbdState), 717 VMSTATE_INT32(translate, PS2KbdState), 718 VMSTATE_INT32_V(scancode_set, PS2KbdState,3), 719 VMSTATE_END_OF_LIST() 720 }, 721 .subsections = (const VMStateDescription*[]) { 722 &vmstate_ps2_keyboard_ledstate, 723 NULL 724 } 725 }; 726 727 static int ps2_mouse_post_load(void *opaque, int version_id) 728 { 729 PS2MouseState *s = (PS2MouseState *)opaque; 730 PS2State *ps2 = &s->common; 731 732 ps2_common_post_load(ps2); 733 734 return 0; 735 } 736 737 static void ps2_mouse_pre_save(void *opaque) 738 { 739 PS2MouseState *s = (PS2MouseState *)opaque; 740 PS2State *ps2 = &s->common; 741 742 ps2_common_post_load(ps2); 743 } 744 745 static const VMStateDescription vmstate_ps2_mouse = { 746 .name = "ps2mouse", 747 .version_id = 2, 748 .minimum_version_id = 2, 749 .post_load = ps2_mouse_post_load, 750 .pre_save = ps2_mouse_pre_save, 751 .fields = (VMStateField[]) { 752 VMSTATE_STRUCT(common, PS2MouseState, 0, vmstate_ps2_common, PS2State), 753 VMSTATE_UINT8(mouse_status, PS2MouseState), 754 VMSTATE_UINT8(mouse_resolution, PS2MouseState), 755 VMSTATE_UINT8(mouse_sample_rate, PS2MouseState), 756 VMSTATE_UINT8(mouse_wrap, PS2MouseState), 757 VMSTATE_UINT8(mouse_type, PS2MouseState), 758 VMSTATE_UINT8(mouse_detect_state, PS2MouseState), 759 VMSTATE_INT32(mouse_dx, PS2MouseState), 760 VMSTATE_INT32(mouse_dy, PS2MouseState), 761 VMSTATE_INT32(mouse_dz, PS2MouseState), 762 VMSTATE_UINT8(mouse_buttons, PS2MouseState), 763 VMSTATE_END_OF_LIST() 764 } 765 }; 766 767 static QemuInputHandler ps2_keyboard_handler = { 768 .name = "QEMU PS/2 Keyboard", 769 .mask = INPUT_EVENT_MASK_KEY, 770 .event = ps2_keyboard_event, 771 }; 772 773 void *ps2_kbd_init(void (*update_irq)(void *, int), void *update_arg) 774 { 775 PS2KbdState *s = (PS2KbdState *)g_malloc0(sizeof(PS2KbdState)); 776 777 trace_ps2_kbd_init(s); 778 s->common.update_irq = update_irq; 779 s->common.update_arg = update_arg; 780 s->scancode_set = 2; 781 vmstate_register(NULL, 0, &vmstate_ps2_keyboard, s); 782 qemu_input_handler_register((DeviceState *)s, 783 &ps2_keyboard_handler); 784 qemu_register_reset(ps2_kbd_reset, s); 785 return s; 786 } 787 788 static QemuInputHandler ps2_mouse_handler = { 789 .name = "QEMU PS/2 Mouse", 790 .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL, 791 .event = ps2_mouse_event, 792 .sync = ps2_mouse_sync, 793 }; 794 795 void *ps2_mouse_init(void (*update_irq)(void *, int), void *update_arg) 796 { 797 PS2MouseState *s = (PS2MouseState *)g_malloc0(sizeof(PS2MouseState)); 798 799 trace_ps2_mouse_init(s); 800 s->common.update_irq = update_irq; 801 s->common.update_arg = update_arg; 802 vmstate_register(NULL, 0, &vmstate_ps2_mouse, s); 803 qemu_input_handler_register((DeviceState *)s, 804 &ps2_mouse_handler); 805 qemu_register_reset(ps2_mouse_reset, s); 806 return s; 807 } 808