pckbd.c (28208B)
1 /* 2 * QEMU PC keyboard 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 25 #include "qemu/osdep.h" 26 #include "qemu/error-report.h" 27 #include "qemu/log.h" 28 #include "qemu/timer.h" 29 #include "qapi/error.h" 30 #include "hw/isa/isa.h" 31 #include "migration/vmstate.h" 32 #include "hw/acpi/acpi_aml_interface.h" 33 #include "hw/input/ps2.h" 34 #include "hw/irq.h" 35 #include "hw/input/i8042.h" 36 #include "hw/qdev-properties.h" 37 #include "sysemu/reset.h" 38 #include "sysemu/runstate.h" 39 40 #include "trace.h" 41 42 /* Keyboard Controller Commands */ 43 44 /* Read mode bits */ 45 #define KBD_CCMD_READ_MODE 0x20 46 /* Write mode bits */ 47 #define KBD_CCMD_WRITE_MODE 0x60 48 /* Get controller version */ 49 #define KBD_CCMD_GET_VERSION 0xA1 50 /* Disable mouse interface */ 51 #define KBD_CCMD_MOUSE_DISABLE 0xA7 52 /* Enable mouse interface */ 53 #define KBD_CCMD_MOUSE_ENABLE 0xA8 54 /* Mouse interface test */ 55 #define KBD_CCMD_TEST_MOUSE 0xA9 56 /* Controller self test */ 57 #define KBD_CCMD_SELF_TEST 0xAA 58 /* Keyboard interface test */ 59 #define KBD_CCMD_KBD_TEST 0xAB 60 /* Keyboard interface disable */ 61 #define KBD_CCMD_KBD_DISABLE 0xAD 62 /* Keyboard interface enable */ 63 #define KBD_CCMD_KBD_ENABLE 0xAE 64 /* read input port */ 65 #define KBD_CCMD_READ_INPORT 0xC0 66 /* read output port */ 67 #define KBD_CCMD_READ_OUTPORT 0xD0 68 /* write output port */ 69 #define KBD_CCMD_WRITE_OUTPORT 0xD1 70 #define KBD_CCMD_WRITE_OBUF 0xD2 71 /* Write to output buffer as if initiated by the auxiliary device */ 72 #define KBD_CCMD_WRITE_AUX_OBUF 0xD3 73 /* Write the following byte to the mouse */ 74 #define KBD_CCMD_WRITE_MOUSE 0xD4 75 /* HP vectra only ? */ 76 #define KBD_CCMD_DISABLE_A20 0xDD 77 /* HP vectra only ? */ 78 #define KBD_CCMD_ENABLE_A20 0xDF 79 /* Pulse bits 3-0 of the output port P2. */ 80 #define KBD_CCMD_PULSE_BITS_3_0 0xF0 81 /* Pulse bit 0 of the output port P2 = CPU reset. */ 82 #define KBD_CCMD_RESET 0xFE 83 /* Pulse no bits of the output port P2. */ 84 #define KBD_CCMD_NO_OP 0xFF 85 86 /* Status Register Bits */ 87 88 /* Keyboard output buffer full */ 89 #define KBD_STAT_OBF 0x01 90 /* Keyboard input buffer full */ 91 #define KBD_STAT_IBF 0x02 92 /* Self test successful */ 93 #define KBD_STAT_SELFTEST 0x04 94 /* Last write was a command write (0=data) */ 95 #define KBD_STAT_CMD 0x08 96 /* Zero if keyboard locked */ 97 #define KBD_STAT_UNLOCKED 0x10 98 /* Mouse output buffer full */ 99 #define KBD_STAT_MOUSE_OBF 0x20 100 /* General receive/xmit timeout */ 101 #define KBD_STAT_GTO 0x40 102 /* Parity error */ 103 #define KBD_STAT_PERR 0x80 104 105 /* Controller Mode Register Bits */ 106 107 /* Keyboard data generate IRQ1 */ 108 #define KBD_MODE_KBD_INT 0x01 109 /* Mouse data generate IRQ12 */ 110 #define KBD_MODE_MOUSE_INT 0x02 111 /* The system flag (?) */ 112 #define KBD_MODE_SYS 0x04 113 /* The keylock doesn't affect the keyboard if set */ 114 #define KBD_MODE_NO_KEYLOCK 0x08 115 /* Disable keyboard interface */ 116 #define KBD_MODE_DISABLE_KBD 0x10 117 /* Disable mouse interface */ 118 #define KBD_MODE_DISABLE_MOUSE 0x20 119 /* Scan code conversion to PC format */ 120 #define KBD_MODE_KCC 0x40 121 #define KBD_MODE_RFU 0x80 122 123 /* Output Port Bits */ 124 #define KBD_OUT_RESET 0x01 /* 1=normal mode, 0=reset */ 125 #define KBD_OUT_A20 0x02 /* x86 only */ 126 #define KBD_OUT_OBF 0x10 /* Keyboard output buffer full */ 127 #define KBD_OUT_MOUSE_OBF 0x20 /* Mouse output buffer full */ 128 129 /* 130 * OSes typically write 0xdd/0xdf to turn the A20 line off and on. 131 * We make the default value of the outport include these four bits, 132 * so that the subsection is rarely necessary. 133 */ 134 #define KBD_OUT_ONES 0xcc 135 136 #define KBD_PENDING_KBD_COMPAT 0x01 137 #define KBD_PENDING_AUX_COMPAT 0x02 138 #define KBD_PENDING_CTRL_KBD 0x04 139 #define KBD_PENDING_CTRL_AUX 0x08 140 #define KBD_PENDING_KBD KBD_MODE_DISABLE_KBD /* 0x10 */ 141 #define KBD_PENDING_AUX KBD_MODE_DISABLE_MOUSE /* 0x20 */ 142 143 #define KBD_MIGR_TIMER_PENDING 0x1 144 145 #define KBD_OBSRC_KBD 0x01 146 #define KBD_OBSRC_MOUSE 0x02 147 #define KBD_OBSRC_CTRL 0x04 148 149 150 /* 151 * XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be 152 * incorrect, but it avoids having to simulate exact delays 153 */ 154 static void kbd_update_irq_lines(KBDState *s) 155 { 156 int irq_kbd_level, irq_mouse_level; 157 158 irq_kbd_level = 0; 159 irq_mouse_level = 0; 160 161 if (s->status & KBD_STAT_OBF) { 162 if (s->status & KBD_STAT_MOUSE_OBF) { 163 if (s->mode & KBD_MODE_MOUSE_INT) { 164 irq_mouse_level = 1; 165 } 166 } else { 167 if ((s->mode & KBD_MODE_KBD_INT) && 168 !(s->mode & KBD_MODE_DISABLE_KBD)) { 169 irq_kbd_level = 1; 170 } 171 } 172 } 173 qemu_set_irq(s->irqs[I8042_KBD_IRQ], irq_kbd_level); 174 qemu_set_irq(s->irqs[I8042_MOUSE_IRQ], irq_mouse_level); 175 } 176 177 static void kbd_deassert_irq(KBDState *s) 178 { 179 s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF); 180 s->outport &= ~(KBD_OUT_OBF | KBD_OUT_MOUSE_OBF); 181 kbd_update_irq_lines(s); 182 } 183 184 static uint8_t kbd_pending(KBDState *s) 185 { 186 if (s->extended_state) { 187 return s->pending & (~s->mode | ~(KBD_PENDING_KBD | KBD_PENDING_AUX)); 188 } else { 189 return s->pending; 190 } 191 } 192 193 /* update irq and KBD_STAT_[MOUSE_]OBF */ 194 static void kbd_update_irq(KBDState *s) 195 { 196 uint8_t pending = kbd_pending(s); 197 198 s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF); 199 s->outport &= ~(KBD_OUT_OBF | KBD_OUT_MOUSE_OBF); 200 if (pending) { 201 s->status |= KBD_STAT_OBF; 202 s->outport |= KBD_OUT_OBF; 203 if (pending & KBD_PENDING_CTRL_KBD) { 204 s->obsrc = KBD_OBSRC_CTRL; 205 } else if (pending & KBD_PENDING_CTRL_AUX) { 206 s->status |= KBD_STAT_MOUSE_OBF; 207 s->outport |= KBD_OUT_MOUSE_OBF; 208 s->obsrc = KBD_OBSRC_CTRL; 209 } else if (pending & KBD_PENDING_KBD) { 210 s->obsrc = KBD_OBSRC_KBD; 211 } else { 212 s->status |= KBD_STAT_MOUSE_OBF; 213 s->outport |= KBD_OUT_MOUSE_OBF; 214 s->obsrc = KBD_OBSRC_MOUSE; 215 } 216 } 217 kbd_update_irq_lines(s); 218 } 219 220 static void kbd_safe_update_irq(KBDState *s) 221 { 222 /* 223 * with KBD_STAT_OBF set, a call to kbd_read_data() will eventually call 224 * kbd_update_irq() 225 */ 226 if (s->status & KBD_STAT_OBF) { 227 return; 228 } 229 /* the throttle timer is pending and will call kbd_update_irq() */ 230 if (s->throttle_timer && timer_pending(s->throttle_timer)) { 231 return; 232 } 233 if (kbd_pending(s)) { 234 kbd_update_irq(s); 235 } 236 } 237 238 static void kbd_update_kbd_irq(void *opaque, int level) 239 { 240 KBDState *s = opaque; 241 242 if (level) { 243 s->pending |= KBD_PENDING_KBD; 244 } else { 245 s->pending &= ~KBD_PENDING_KBD; 246 } 247 kbd_safe_update_irq(s); 248 } 249 250 static void kbd_update_aux_irq(void *opaque, int level) 251 { 252 KBDState *s = opaque; 253 254 if (level) { 255 s->pending |= KBD_PENDING_AUX; 256 } else { 257 s->pending &= ~KBD_PENDING_AUX; 258 } 259 kbd_safe_update_irq(s); 260 } 261 262 static void kbd_throttle_timeout(void *opaque) 263 { 264 KBDState *s = opaque; 265 266 if (kbd_pending(s)) { 267 kbd_update_irq(s); 268 } 269 } 270 271 static uint64_t kbd_read_status(void *opaque, hwaddr addr, 272 unsigned size) 273 { 274 KBDState *s = opaque; 275 int val; 276 val = s->status; 277 trace_pckbd_kbd_read_status(val); 278 return val; 279 } 280 281 static void kbd_queue(KBDState *s, int b, int aux) 282 { 283 if (s->extended_state) { 284 s->cbdata = b; 285 s->pending &= ~KBD_PENDING_CTRL_KBD & ~KBD_PENDING_CTRL_AUX; 286 s->pending |= aux ? KBD_PENDING_CTRL_AUX : KBD_PENDING_CTRL_KBD; 287 kbd_safe_update_irq(s); 288 } else { 289 ps2_queue(aux ? PS2_DEVICE(&s->ps2mouse) : PS2_DEVICE(&s->ps2kbd), b); 290 } 291 } 292 293 static uint8_t kbd_dequeue(KBDState *s) 294 { 295 uint8_t b = s->cbdata; 296 297 s->pending &= ~KBD_PENDING_CTRL_KBD & ~KBD_PENDING_CTRL_AUX; 298 if (kbd_pending(s)) { 299 kbd_update_irq(s); 300 } 301 return b; 302 } 303 304 static void outport_write(KBDState *s, uint32_t val) 305 { 306 trace_pckbd_outport_write(val); 307 s->outport = val; 308 qemu_set_irq(s->a20_out, (val >> 1) & 1); 309 if (!(val & 1)) { 310 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 311 } 312 } 313 314 static void kbd_write_command(void *opaque, hwaddr addr, 315 uint64_t val, unsigned size) 316 { 317 KBDState *s = opaque; 318 319 trace_pckbd_kbd_write_command(val); 320 321 /* 322 * Bits 3-0 of the output port P2 of the keyboard controller may be pulsed 323 * low for approximately 6 micro seconds. Bits 3-0 of the KBD_CCMD_PULSE 324 * command specify the output port bits to be pulsed. 325 * 0: Bit should be pulsed. 1: Bit should not be modified. 326 * The only useful version of this command is pulsing bit 0, 327 * which does a CPU reset. 328 */ 329 if ((val & KBD_CCMD_PULSE_BITS_3_0) == KBD_CCMD_PULSE_BITS_3_0) { 330 if (!(val & 1)) { 331 val = KBD_CCMD_RESET; 332 } else { 333 val = KBD_CCMD_NO_OP; 334 } 335 } 336 337 switch (val) { 338 case KBD_CCMD_READ_MODE: 339 kbd_queue(s, s->mode, 0); 340 break; 341 case KBD_CCMD_WRITE_MODE: 342 case KBD_CCMD_WRITE_OBUF: 343 case KBD_CCMD_WRITE_AUX_OBUF: 344 case KBD_CCMD_WRITE_MOUSE: 345 case KBD_CCMD_WRITE_OUTPORT: 346 s->write_cmd = val; 347 break; 348 case KBD_CCMD_MOUSE_DISABLE: 349 s->mode |= KBD_MODE_DISABLE_MOUSE; 350 break; 351 case KBD_CCMD_MOUSE_ENABLE: 352 s->mode &= ~KBD_MODE_DISABLE_MOUSE; 353 kbd_safe_update_irq(s); 354 break; 355 case KBD_CCMD_TEST_MOUSE: 356 kbd_queue(s, 0x00, 0); 357 break; 358 case KBD_CCMD_SELF_TEST: 359 s->status |= KBD_STAT_SELFTEST; 360 kbd_queue(s, 0x55, 0); 361 break; 362 case KBD_CCMD_KBD_TEST: 363 kbd_queue(s, 0x00, 0); 364 break; 365 case KBD_CCMD_KBD_DISABLE: 366 s->mode |= KBD_MODE_DISABLE_KBD; 367 break; 368 case KBD_CCMD_KBD_ENABLE: 369 s->mode &= ~KBD_MODE_DISABLE_KBD; 370 kbd_safe_update_irq(s); 371 break; 372 case KBD_CCMD_READ_INPORT: 373 kbd_queue(s, 0x80, 0); 374 break; 375 case KBD_CCMD_READ_OUTPORT: 376 kbd_queue(s, s->outport, 0); 377 break; 378 case KBD_CCMD_ENABLE_A20: 379 qemu_irq_raise(s->a20_out); 380 s->outport |= KBD_OUT_A20; 381 break; 382 case KBD_CCMD_DISABLE_A20: 383 qemu_irq_lower(s->a20_out); 384 s->outport &= ~KBD_OUT_A20; 385 break; 386 case KBD_CCMD_RESET: 387 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 388 break; 389 case KBD_CCMD_NO_OP: 390 /* ignore that */ 391 break; 392 default: 393 qemu_log_mask(LOG_GUEST_ERROR, 394 "unsupported keyboard cmd=0x%02" PRIx64 "\n", val); 395 break; 396 } 397 } 398 399 static uint64_t kbd_read_data(void *opaque, hwaddr addr, 400 unsigned size) 401 { 402 KBDState *s = opaque; 403 404 if (s->status & KBD_STAT_OBF) { 405 kbd_deassert_irq(s); 406 if (s->obsrc & KBD_OBSRC_KBD) { 407 if (s->throttle_timer) { 408 timer_mod(s->throttle_timer, 409 qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 1000); 410 } 411 s->obdata = ps2_read_data(PS2_DEVICE(&s->ps2kbd)); 412 } else if (s->obsrc & KBD_OBSRC_MOUSE) { 413 s->obdata = ps2_read_data(PS2_DEVICE(&s->ps2mouse)); 414 } else if (s->obsrc & KBD_OBSRC_CTRL) { 415 s->obdata = kbd_dequeue(s); 416 } 417 } 418 419 trace_pckbd_kbd_read_data(s->obdata); 420 return s->obdata; 421 } 422 423 static void kbd_write_data(void *opaque, hwaddr addr, 424 uint64_t val, unsigned size) 425 { 426 KBDState *s = opaque; 427 428 trace_pckbd_kbd_write_data(val); 429 430 switch (s->write_cmd) { 431 case 0: 432 ps2_write_keyboard(&s->ps2kbd, val); 433 /* sending data to the keyboard reenables PS/2 communication */ 434 s->mode &= ~KBD_MODE_DISABLE_KBD; 435 kbd_safe_update_irq(s); 436 break; 437 case KBD_CCMD_WRITE_MODE: 438 s->mode = val; 439 ps2_keyboard_set_translation(&s->ps2kbd, 440 (s->mode & KBD_MODE_KCC) != 0); 441 /* 442 * a write to the mode byte interrupt enable flags directly updates 443 * the irq lines 444 */ 445 kbd_update_irq_lines(s); 446 /* 447 * a write to the mode byte disable interface flags may raise 448 * an irq if there is pending data in the PS/2 queues. 449 */ 450 kbd_safe_update_irq(s); 451 break; 452 case KBD_CCMD_WRITE_OBUF: 453 kbd_queue(s, val, 0); 454 break; 455 case KBD_CCMD_WRITE_AUX_OBUF: 456 kbd_queue(s, val, 1); 457 break; 458 case KBD_CCMD_WRITE_OUTPORT: 459 outport_write(s, val); 460 break; 461 case KBD_CCMD_WRITE_MOUSE: 462 ps2_write_mouse(&s->ps2mouse, val); 463 /* sending data to the mouse reenables PS/2 communication */ 464 s->mode &= ~KBD_MODE_DISABLE_MOUSE; 465 kbd_safe_update_irq(s); 466 break; 467 default: 468 break; 469 } 470 s->write_cmd = 0; 471 } 472 473 static void kbd_reset(void *opaque) 474 { 475 KBDState *s = opaque; 476 477 s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT; 478 s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED; 479 s->outport = KBD_OUT_RESET | KBD_OUT_A20 | KBD_OUT_ONES; 480 s->pending = 0; 481 kbd_deassert_irq(s); 482 if (s->throttle_timer) { 483 timer_del(s->throttle_timer); 484 } 485 } 486 487 static uint8_t kbd_outport_default(KBDState *s) 488 { 489 return KBD_OUT_RESET | KBD_OUT_A20 | KBD_OUT_ONES 490 | (s->status & KBD_STAT_OBF ? KBD_OUT_OBF : 0) 491 | (s->status & KBD_STAT_MOUSE_OBF ? KBD_OUT_MOUSE_OBF : 0); 492 } 493 494 static int kbd_outport_post_load(void *opaque, int version_id) 495 { 496 KBDState *s = opaque; 497 s->outport_present = true; 498 return 0; 499 } 500 501 static bool kbd_outport_needed(void *opaque) 502 { 503 KBDState *s = opaque; 504 return s->outport != kbd_outport_default(s); 505 } 506 507 static const VMStateDescription vmstate_kbd_outport = { 508 .name = "pckbd_outport", 509 .version_id = 1, 510 .minimum_version_id = 1, 511 .post_load = kbd_outport_post_load, 512 .needed = kbd_outport_needed, 513 .fields = (VMStateField[]) { 514 VMSTATE_UINT8(outport, KBDState), 515 VMSTATE_END_OF_LIST() 516 } 517 }; 518 519 static int kbd_extended_state_pre_save(void *opaque) 520 { 521 KBDState *s = opaque; 522 523 s->migration_flags = 0; 524 if (s->throttle_timer && timer_pending(s->throttle_timer)) { 525 s->migration_flags |= KBD_MIGR_TIMER_PENDING; 526 } 527 528 return 0; 529 } 530 531 static int kbd_extended_state_post_load(void *opaque, int version_id) 532 { 533 KBDState *s = opaque; 534 535 if (s->migration_flags & KBD_MIGR_TIMER_PENDING) { 536 kbd_throttle_timeout(s); 537 } 538 s->extended_state_loaded = true; 539 540 return 0; 541 } 542 543 static bool kbd_extended_state_needed(void *opaque) 544 { 545 KBDState *s = opaque; 546 547 return s->extended_state; 548 } 549 550 static const VMStateDescription vmstate_kbd_extended_state = { 551 .name = "pckbd/extended_state", 552 .post_load = kbd_extended_state_post_load, 553 .pre_save = kbd_extended_state_pre_save, 554 .needed = kbd_extended_state_needed, 555 .fields = (VMStateField[]) { 556 VMSTATE_UINT32(migration_flags, KBDState), 557 VMSTATE_UINT32(obsrc, KBDState), 558 VMSTATE_UINT8(obdata, KBDState), 559 VMSTATE_UINT8(cbdata, KBDState), 560 VMSTATE_END_OF_LIST() 561 } 562 }; 563 564 static int kbd_pre_save(void *opaque) 565 { 566 KBDState *s = opaque; 567 568 if (s->extended_state) { 569 s->pending_tmp = s->pending; 570 } else { 571 s->pending_tmp = 0; 572 if (s->pending & KBD_PENDING_KBD) { 573 s->pending_tmp |= KBD_PENDING_KBD_COMPAT; 574 } 575 if (s->pending & KBD_PENDING_AUX) { 576 s->pending_tmp |= KBD_PENDING_AUX_COMPAT; 577 } 578 } 579 return 0; 580 } 581 582 static int kbd_pre_load(void *opaque) 583 { 584 KBDState *s = opaque; 585 586 s->outport_present = false; 587 s->extended_state_loaded = false; 588 return 0; 589 } 590 591 static int kbd_post_load(void *opaque, int version_id) 592 { 593 KBDState *s = opaque; 594 if (!s->outport_present) { 595 s->outport = kbd_outport_default(s); 596 } 597 s->pending = s->pending_tmp; 598 if (!s->extended_state_loaded) { 599 s->obsrc = s->status & KBD_STAT_OBF ? 600 (s->status & KBD_STAT_MOUSE_OBF ? KBD_OBSRC_MOUSE : KBD_OBSRC_KBD) : 601 0; 602 if (s->pending & KBD_PENDING_KBD_COMPAT) { 603 s->pending |= KBD_PENDING_KBD; 604 } 605 if (s->pending & KBD_PENDING_AUX_COMPAT) { 606 s->pending |= KBD_PENDING_AUX; 607 } 608 } 609 /* clear all unused flags */ 610 s->pending &= KBD_PENDING_CTRL_KBD | KBD_PENDING_CTRL_AUX | 611 KBD_PENDING_KBD | KBD_PENDING_AUX; 612 return 0; 613 } 614 615 static const VMStateDescription vmstate_kbd = { 616 .name = "pckbd", 617 .version_id = 3, 618 .minimum_version_id = 3, 619 .pre_load = kbd_pre_load, 620 .post_load = kbd_post_load, 621 .pre_save = kbd_pre_save, 622 .fields = (VMStateField[]) { 623 VMSTATE_UINT8(write_cmd, KBDState), 624 VMSTATE_UINT8(status, KBDState), 625 VMSTATE_UINT8(mode, KBDState), 626 VMSTATE_UINT8(pending_tmp, KBDState), 627 VMSTATE_END_OF_LIST() 628 }, 629 .subsections = (const VMStateDescription * []) { 630 &vmstate_kbd_outport, 631 &vmstate_kbd_extended_state, 632 NULL 633 } 634 }; 635 636 /* Memory mapped interface */ 637 static uint64_t kbd_mm_readfn(void *opaque, hwaddr addr, unsigned size) 638 { 639 KBDState *s = opaque; 640 641 if (addr & s->mask) { 642 return kbd_read_status(s, 0, 1) & 0xff; 643 } else { 644 return kbd_read_data(s, 0, 1) & 0xff; 645 } 646 } 647 648 static void kbd_mm_writefn(void *opaque, hwaddr addr, 649 uint64_t value, unsigned size) 650 { 651 KBDState *s = opaque; 652 653 if (addr & s->mask) { 654 kbd_write_command(s, 0, value & 0xff, 1); 655 } else { 656 kbd_write_data(s, 0, value & 0xff, 1); 657 } 658 } 659 660 661 static const MemoryRegionOps i8042_mmio_ops = { 662 .read = kbd_mm_readfn, 663 .write = kbd_mm_writefn, 664 .valid.min_access_size = 1, 665 .valid.max_access_size = 4, 666 .endianness = DEVICE_NATIVE_ENDIAN, 667 }; 668 669 static void i8042_mmio_set_kbd_irq(void *opaque, int n, int level) 670 { 671 MMIOKBDState *s = I8042_MMIO(opaque); 672 KBDState *ks = &s->kbd; 673 674 kbd_update_kbd_irq(ks, level); 675 } 676 677 static void i8042_mmio_set_mouse_irq(void *opaque, int n, int level) 678 { 679 MMIOKBDState *s = I8042_MMIO(opaque); 680 KBDState *ks = &s->kbd; 681 682 kbd_update_aux_irq(ks, level); 683 } 684 685 static void i8042_mmio_reset(DeviceState *dev) 686 { 687 MMIOKBDState *s = I8042_MMIO(dev); 688 KBDState *ks = &s->kbd; 689 690 kbd_reset(ks); 691 } 692 693 static void i8042_mmio_realize(DeviceState *dev, Error **errp) 694 { 695 MMIOKBDState *s = I8042_MMIO(dev); 696 KBDState *ks = &s->kbd; 697 698 memory_region_init_io(&s->region, OBJECT(dev), &i8042_mmio_ops, ks, 699 "i8042", s->size); 700 701 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->region); 702 703 if (!sysbus_realize(SYS_BUS_DEVICE(&ks->ps2kbd), errp)) { 704 return; 705 } 706 707 if (!sysbus_realize(SYS_BUS_DEVICE(&ks->ps2mouse), errp)) { 708 return; 709 } 710 711 qdev_connect_gpio_out(DEVICE(&ks->ps2kbd), PS2_DEVICE_IRQ, 712 qdev_get_gpio_in_named(dev, "ps2-kbd-input-irq", 713 0)); 714 715 qdev_connect_gpio_out(DEVICE(&ks->ps2mouse), PS2_DEVICE_IRQ, 716 qdev_get_gpio_in_named(dev, "ps2-mouse-input-irq", 717 0)); 718 } 719 720 static void i8042_mmio_init(Object *obj) 721 { 722 MMIOKBDState *s = I8042_MMIO(obj); 723 KBDState *ks = &s->kbd; 724 725 ks->extended_state = true; 726 727 object_initialize_child(obj, "ps2kbd", &ks->ps2kbd, TYPE_PS2_KBD_DEVICE); 728 object_initialize_child(obj, "ps2mouse", &ks->ps2mouse, 729 TYPE_PS2_MOUSE_DEVICE); 730 731 qdev_init_gpio_out(DEVICE(obj), ks->irqs, 2); 732 qdev_init_gpio_in_named(DEVICE(obj), i8042_mmio_set_kbd_irq, 733 "ps2-kbd-input-irq", 1); 734 qdev_init_gpio_in_named(DEVICE(obj), i8042_mmio_set_mouse_irq, 735 "ps2-mouse-input-irq", 1); 736 } 737 738 static Property i8042_mmio_properties[] = { 739 DEFINE_PROP_UINT64("mask", MMIOKBDState, kbd.mask, UINT64_MAX), 740 DEFINE_PROP_UINT32("size", MMIOKBDState, size, -1), 741 DEFINE_PROP_END_OF_LIST(), 742 }; 743 744 static const VMStateDescription vmstate_kbd_mmio = { 745 .name = "pckbd-mmio", 746 .version_id = 1, 747 .minimum_version_id = 1, 748 .fields = (VMStateField[]) { 749 VMSTATE_STRUCT(kbd, MMIOKBDState, 0, vmstate_kbd, KBDState), 750 VMSTATE_END_OF_LIST() 751 } 752 }; 753 754 static void i8042_mmio_class_init(ObjectClass *klass, void *data) 755 { 756 DeviceClass *dc = DEVICE_CLASS(klass); 757 758 dc->realize = i8042_mmio_realize; 759 dc->reset = i8042_mmio_reset; 760 dc->vmsd = &vmstate_kbd_mmio; 761 device_class_set_props(dc, i8042_mmio_properties); 762 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 763 } 764 765 static const TypeInfo i8042_mmio_info = { 766 .name = TYPE_I8042_MMIO, 767 .parent = TYPE_SYS_BUS_DEVICE, 768 .instance_init = i8042_mmio_init, 769 .instance_size = sizeof(MMIOKBDState), 770 .class_init = i8042_mmio_class_init 771 }; 772 773 void i8042_isa_mouse_fake_event(ISAKBDState *isa) 774 { 775 KBDState *s = &isa->kbd; 776 777 ps2_mouse_fake_event(&s->ps2mouse); 778 } 779 780 void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out) 781 { 782 qdev_connect_gpio_out_named(DEVICE(dev), I8042_A20_LINE, 0, a20_out); 783 } 784 785 static const VMStateDescription vmstate_kbd_isa = { 786 .name = "pckbd", 787 .version_id = 3, 788 .minimum_version_id = 3, 789 .fields = (VMStateField[]) { 790 VMSTATE_STRUCT(kbd, ISAKBDState, 0, vmstate_kbd, KBDState), 791 VMSTATE_END_OF_LIST() 792 } 793 }; 794 795 static const MemoryRegionOps i8042_data_ops = { 796 .read = kbd_read_data, 797 .write = kbd_write_data, 798 .impl = { 799 .min_access_size = 1, 800 .max_access_size = 1, 801 }, 802 .endianness = DEVICE_LITTLE_ENDIAN, 803 }; 804 805 static const MemoryRegionOps i8042_cmd_ops = { 806 .read = kbd_read_status, 807 .write = kbd_write_command, 808 .impl = { 809 .min_access_size = 1, 810 .max_access_size = 1, 811 }, 812 .endianness = DEVICE_LITTLE_ENDIAN, 813 }; 814 815 static void i8042_set_kbd_irq(void *opaque, int n, int level) 816 { 817 ISAKBDState *s = I8042(opaque); 818 KBDState *ks = &s->kbd; 819 820 kbd_update_kbd_irq(ks, level); 821 } 822 823 static void i8042_set_mouse_irq(void *opaque, int n, int level) 824 { 825 ISAKBDState *s = I8042(opaque); 826 KBDState *ks = &s->kbd; 827 828 kbd_update_aux_irq(ks, level); 829 } 830 831 832 static void i8042_reset(DeviceState *dev) 833 { 834 ISAKBDState *s = I8042(dev); 835 KBDState *ks = &s->kbd; 836 837 kbd_reset(ks); 838 } 839 840 static void i8042_initfn(Object *obj) 841 { 842 ISAKBDState *isa_s = I8042(obj); 843 KBDState *s = &isa_s->kbd; 844 845 memory_region_init_io(isa_s->io + 0, obj, &i8042_data_ops, s, 846 "i8042-data", 1); 847 memory_region_init_io(isa_s->io + 1, obj, &i8042_cmd_ops, s, 848 "i8042-cmd", 1); 849 850 object_initialize_child(obj, "ps2kbd", &s->ps2kbd, TYPE_PS2_KBD_DEVICE); 851 object_initialize_child(obj, "ps2mouse", &s->ps2mouse, 852 TYPE_PS2_MOUSE_DEVICE); 853 854 qdev_init_gpio_out_named(DEVICE(obj), &s->a20_out, I8042_A20_LINE, 1); 855 856 qdev_init_gpio_out(DEVICE(obj), s->irqs, 2); 857 qdev_init_gpio_in_named(DEVICE(obj), i8042_set_kbd_irq, 858 "ps2-kbd-input-irq", 1); 859 qdev_init_gpio_in_named(DEVICE(obj), i8042_set_mouse_irq, 860 "ps2-mouse-input-irq", 1); 861 } 862 863 static void i8042_realizefn(DeviceState *dev, Error **errp) 864 { 865 ISADevice *isadev = ISA_DEVICE(dev); 866 ISAKBDState *isa_s = I8042(dev); 867 KBDState *s = &isa_s->kbd; 868 869 if (isa_s->kbd_irq >= ISA_NUM_IRQS) { 870 error_setg(errp, "Maximum value for \"kbd-irq\" is: %u", 871 ISA_NUM_IRQS - 1); 872 return; 873 } 874 875 if (isa_s->mouse_irq >= ISA_NUM_IRQS) { 876 error_setg(errp, "Maximum value for \"mouse-irq\" is: %u", 877 ISA_NUM_IRQS - 1); 878 return; 879 } 880 881 isa_connect_gpio_out(isadev, I8042_KBD_IRQ, isa_s->kbd_irq); 882 isa_connect_gpio_out(isadev, I8042_MOUSE_IRQ, isa_s->mouse_irq); 883 884 isa_register_ioport(isadev, isa_s->io + 0, 0x60); 885 isa_register_ioport(isadev, isa_s->io + 1, 0x64); 886 887 if (!sysbus_realize(SYS_BUS_DEVICE(&s->ps2kbd), errp)) { 888 return; 889 } 890 891 qdev_connect_gpio_out(DEVICE(&s->ps2kbd), PS2_DEVICE_IRQ, 892 qdev_get_gpio_in_named(dev, "ps2-kbd-input-irq", 893 0)); 894 895 if (!sysbus_realize(SYS_BUS_DEVICE(&s->ps2mouse), errp)) { 896 return; 897 } 898 899 qdev_connect_gpio_out(DEVICE(&s->ps2mouse), PS2_DEVICE_IRQ, 900 qdev_get_gpio_in_named(dev, "ps2-mouse-input-irq", 901 0)); 902 903 if (isa_s->kbd_throttle && !isa_s->kbd.extended_state) { 904 warn_report(TYPE_I8042 ": can't enable kbd-throttle without" 905 " extended-state, disabling kbd-throttle"); 906 } else if (isa_s->kbd_throttle) { 907 s->throttle_timer = timer_new_us(QEMU_CLOCK_VIRTUAL, 908 kbd_throttle_timeout, s); 909 } 910 } 911 912 static void i8042_build_aml(AcpiDevAmlIf *adev, Aml *scope) 913 { 914 ISAKBDState *isa_s = I8042(adev); 915 Aml *kbd; 916 Aml *mou; 917 Aml *crs; 918 919 crs = aml_resource_template(); 920 aml_append(crs, aml_io(AML_DECODE16, 0x0060, 0x0060, 0x01, 0x01)); 921 aml_append(crs, aml_io(AML_DECODE16, 0x0064, 0x0064, 0x01, 0x01)); 922 aml_append(crs, aml_irq_no_flags(isa_s->kbd_irq)); 923 924 kbd = aml_device("KBD"); 925 aml_append(kbd, aml_name_decl("_HID", aml_eisaid("PNP0303"))); 926 aml_append(kbd, aml_name_decl("_STA", aml_int(0xf))); 927 aml_append(kbd, aml_name_decl("_CRS", crs)); 928 929 crs = aml_resource_template(); 930 aml_append(crs, aml_irq_no_flags(isa_s->mouse_irq)); 931 932 mou = aml_device("MOU"); 933 aml_append(mou, aml_name_decl("_HID", aml_eisaid("PNP0F13"))); 934 aml_append(mou, aml_name_decl("_STA", aml_int(0xf))); 935 aml_append(mou, aml_name_decl("_CRS", crs)); 936 937 aml_append(scope, kbd); 938 aml_append(scope, mou); 939 } 940 941 static Property i8042_properties[] = { 942 DEFINE_PROP_BOOL("extended-state", ISAKBDState, kbd.extended_state, true), 943 DEFINE_PROP_BOOL("kbd-throttle", ISAKBDState, kbd_throttle, false), 944 DEFINE_PROP_UINT8("kbd-irq", ISAKBDState, kbd_irq, 1), 945 DEFINE_PROP_UINT8("mouse-irq", ISAKBDState, mouse_irq, 12), 946 DEFINE_PROP_END_OF_LIST(), 947 }; 948 949 static void i8042_class_initfn(ObjectClass *klass, void *data) 950 { 951 DeviceClass *dc = DEVICE_CLASS(klass); 952 AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_CLASS(klass); 953 954 device_class_set_props(dc, i8042_properties); 955 dc->reset = i8042_reset; 956 dc->realize = i8042_realizefn; 957 dc->vmsd = &vmstate_kbd_isa; 958 adevc->build_dev_aml = i8042_build_aml; 959 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 960 } 961 962 static const TypeInfo i8042_info = { 963 .name = TYPE_I8042, 964 .parent = TYPE_ISA_DEVICE, 965 .instance_size = sizeof(ISAKBDState), 966 .instance_init = i8042_initfn, 967 .class_init = i8042_class_initfn, 968 .interfaces = (InterfaceInfo[]) { 969 { TYPE_ACPI_DEV_AML_IF }, 970 { }, 971 }, 972 }; 973 974 static void i8042_register_types(void) 975 { 976 type_register_static(&i8042_info); 977 type_register_static(&i8042_mmio_info); 978 } 979 980 type_init(i8042_register_types)