1 /* 2 * QEMU PowerMac PMU device support 3 * 4 * Copyright (c) 2016 Benjamin Herrenschmidt, IBM Corp. 5 * Copyright (c) 2018 Mark Cave-Ayland 6 * 7 * Based on the CUDA device by: 8 * 9 * Copyright (c) 2004-2007 Fabrice Bellard 10 * Copyright (c) 2007 Jocelyn Mayer 11 * 12 * Permission is hereby granted, free of charge, to any person obtaining a copy 13 * of this software and associated documentation files (the "Software"), to deal 14 * in the Software without restriction, including without limitation the rights 15 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 16 * copies of the Software, and to permit persons to whom the Software is 17 * furnished to do so, subject to the following conditions: 18 * 19 * The above copyright notice and this permission notice shall be included in 20 * all copies or substantial portions of the Software. 21 * 22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 25 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 28 * THE SOFTWARE. 29 */ 30 31 #include "qemu/osdep.h" 32 #include "hw/qdev-properties.h" 33 #include "migration/vmstate.h" 34 #include "hw/irq.h" 35 #include "hw/misc/macio/pmu.h" 36 #include "qemu/timer.h" 37 #include "sysemu/runstate.h" 38 #include "sysemu/rtc.h" 39 #include "qapi/error.h" 40 #include "qemu/cutils.h" 41 #include "qemu/log.h" 42 #include "qemu/module.h" 43 #include "trace.h" 44 45 46 /* Bits in B data register: all active low */ 47 #define TACK 0x08 /* Transfer request (input) */ 48 #define TREQ 0x10 /* Transfer acknowledge (output) */ 49 50 /* PMU returns time_t's offset from Jan 1, 1904, not 1970 */ 51 #define RTC_OFFSET 2082844800 52 53 #define VIA_TIMER_FREQ (4700000 / 6) 54 55 static void via_set_sr_int(void *opaque) 56 { 57 PMUState *s = opaque; 58 MOS6522PMUState *mps = MOS6522_PMU(&s->mos6522_pmu); 59 MOS6522State *ms = MOS6522(mps); 60 qemu_irq irq = qdev_get_gpio_in(DEVICE(ms), SR_INT_BIT); 61 62 qemu_set_irq(irq, 1); 63 } 64 65 static void pmu_update_extirq(PMUState *s) 66 { 67 if ((s->intbits & s->intmask) != 0) { 68 macio_set_gpio(s->gpio, 1, false); 69 } else { 70 macio_set_gpio(s->gpio, 1, true); 71 } 72 } 73 74 static void pmu_adb_poll(void *opaque) 75 { 76 PMUState *s = opaque; 77 ADBBusState *adb_bus = &s->adb_bus; 78 int olen; 79 80 if (!(s->intbits & PMU_INT_ADB)) { 81 olen = adb_poll(adb_bus, s->adb_reply, adb_bus->autopoll_mask); 82 trace_pmu_adb_poll(olen); 83 84 if (olen > 0) { 85 s->adb_reply_size = olen; 86 s->intbits |= PMU_INT_ADB | PMU_INT_ADB_AUTO; 87 pmu_update_extirq(s); 88 } 89 } 90 } 91 92 static void pmu_one_sec_timer(void *opaque) 93 { 94 PMUState *s = opaque; 95 96 trace_pmu_one_sec_timer(); 97 98 s->intbits |= PMU_INT_TICK; 99 pmu_update_extirq(s); 100 s->one_sec_target += 1000; 101 102 timer_mod(s->one_sec_timer, s->one_sec_target); 103 } 104 105 static void pmu_cmd_int_ack(PMUState *s, 106 const uint8_t *in_data, uint8_t in_len, 107 uint8_t *out_data, uint8_t *out_len) 108 { 109 if (in_len != 0) { 110 qemu_log_mask(LOG_GUEST_ERROR, 111 "PMU: INT_ACK command, invalid len: %d want: 0\n", 112 in_len); 113 return; 114 } 115 116 /* Make appropriate reply packet */ 117 if (s->intbits & PMU_INT_ADB) { 118 if (!s->adb_reply_size) { 119 qemu_log_mask(LOG_GUEST_ERROR, 120 "Odd, PMU_INT_ADB set with no reply in buffer\n"); 121 } 122 123 memcpy(out_data + 1, s->adb_reply, s->adb_reply_size); 124 out_data[0] = s->intbits & (PMU_INT_ADB | PMU_INT_ADB_AUTO); 125 *out_len = s->adb_reply_size + 1; 126 s->intbits &= ~(PMU_INT_ADB | PMU_INT_ADB_AUTO); 127 s->adb_reply_size = 0; 128 } else { 129 out_data[0] = s->intbits; 130 s->intbits = 0; 131 *out_len = 1; 132 } 133 134 pmu_update_extirq(s); 135 } 136 137 static void pmu_cmd_set_int_mask(PMUState *s, 138 const uint8_t *in_data, uint8_t in_len, 139 uint8_t *out_data, uint8_t *out_len) 140 { 141 if (in_len != 1) { 142 qemu_log_mask(LOG_GUEST_ERROR, 143 "PMU: SET_INT_MASK command, invalid len: %d want: 1\n", 144 in_len); 145 return; 146 } 147 148 trace_pmu_cmd_set_int_mask(s->intmask); 149 s->intmask = in_data[0]; 150 151 pmu_update_extirq(s); 152 } 153 154 static void pmu_cmd_set_adb_autopoll(PMUState *s, uint16_t mask) 155 { 156 ADBBusState *adb_bus = &s->adb_bus; 157 158 trace_pmu_cmd_set_adb_autopoll(mask); 159 160 if (mask) { 161 adb_set_autopoll_mask(adb_bus, mask); 162 adb_set_autopoll_enabled(adb_bus, true); 163 } else { 164 adb_set_autopoll_enabled(adb_bus, false); 165 } 166 } 167 168 static void pmu_cmd_adb(PMUState *s, 169 const uint8_t *in_data, uint8_t in_len, 170 uint8_t *out_data, uint8_t *out_len) 171 { 172 int len, adblen; 173 uint8_t adb_cmd[255]; 174 175 if (in_len < 2) { 176 qemu_log_mask(LOG_GUEST_ERROR, 177 "PMU: ADB PACKET, invalid len: %d want at least 2\n", 178 in_len); 179 return; 180 } 181 182 *out_len = 0; 183 184 if (!s->has_adb) { 185 trace_pmu_cmd_adb_nobus(); 186 return; 187 } 188 189 /* Set autopoll is a special form of the command */ 190 if (in_data[0] == 0 && in_data[1] == 0x86) { 191 uint16_t mask = in_data[2]; 192 mask = (mask << 8) | in_data[3]; 193 if (in_len != 4) { 194 qemu_log_mask(LOG_GUEST_ERROR, 195 "PMU: ADB Autopoll requires 4 bytes, got %d\n", 196 in_len); 197 return; 198 } 199 200 pmu_cmd_set_adb_autopoll(s, mask); 201 return; 202 } 203 204 trace_pmu_cmd_adb_request(in_len, in_data[0], in_data[1], in_data[2], 205 in_data[3], in_data[4]); 206 207 *out_len = 0; 208 209 /* Check ADB len */ 210 adblen = in_data[2]; 211 if (adblen > (in_len - 3)) { 212 qemu_log_mask(LOG_GUEST_ERROR, 213 "PMU: ADB len is %d > %d (in_len -3)...erroring\n", 214 adblen, in_len - 3); 215 len = -1; 216 } else if (adblen > 252) { 217 qemu_log_mask(LOG_GUEST_ERROR, "PMU: ADB command too big!\n"); 218 len = -1; 219 } else { 220 /* Format command */ 221 adb_cmd[0] = in_data[0]; 222 memcpy(&adb_cmd[1], &in_data[3], in_len - 3); 223 len = adb_request(&s->adb_bus, s->adb_reply + 2, adb_cmd, in_len - 2); 224 225 trace_pmu_cmd_adb_reply(len); 226 } 227 228 if (len > 0) { 229 /* XXX Check this */ 230 s->adb_reply_size = len + 2; 231 s->adb_reply[0] = 0x01; 232 s->adb_reply[1] = len; 233 } else { 234 /* XXX Check this */ 235 s->adb_reply_size = 1; 236 s->adb_reply[0] = 0x00; 237 } 238 239 s->intbits |= PMU_INT_ADB; 240 pmu_update_extirq(s); 241 } 242 243 static void pmu_cmd_adb_poll_off(PMUState *s, 244 const uint8_t *in_data, uint8_t in_len, 245 uint8_t *out_data, uint8_t *out_len) 246 { 247 ADBBusState *adb_bus = &s->adb_bus; 248 249 if (in_len != 0) { 250 qemu_log_mask(LOG_GUEST_ERROR, 251 "PMU: ADB POLL OFF command, invalid len: %d want: 0\n", 252 in_len); 253 return; 254 } 255 256 if (s->has_adb) { 257 adb_set_autopoll_enabled(adb_bus, false); 258 } 259 } 260 261 static void pmu_cmd_shutdown(PMUState *s, 262 const uint8_t *in_data, uint8_t in_len, 263 uint8_t *out_data, uint8_t *out_len) 264 { 265 if (in_len != 4) { 266 qemu_log_mask(LOG_GUEST_ERROR, 267 "PMU: SHUTDOWN command, invalid len: %d want: 4\n", 268 in_len); 269 return; 270 } 271 272 *out_len = 1; 273 out_data[0] = 0; 274 275 if (in_data[0] != 'M' || in_data[1] != 'A' || in_data[2] != 'T' || 276 in_data[3] != 'T') { 277 278 qemu_log_mask(LOG_GUEST_ERROR, 279 "PMU: SHUTDOWN command, Bad MATT signature\n"); 280 return; 281 } 282 283 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 284 } 285 286 static void pmu_cmd_reset(PMUState *s, 287 const uint8_t *in_data, uint8_t in_len, 288 uint8_t *out_data, uint8_t *out_len) 289 { 290 if (in_len != 0) { 291 qemu_log_mask(LOG_GUEST_ERROR, 292 "PMU: RESET command, invalid len: %d want: 0\n", 293 in_len); 294 return; 295 } 296 297 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 298 } 299 300 static void pmu_cmd_get_rtc(PMUState *s, 301 const uint8_t *in_data, uint8_t in_len, 302 uint8_t *out_data, uint8_t *out_len) 303 { 304 uint32_t ti; 305 306 if (in_len != 0) { 307 qemu_log_mask(LOG_GUEST_ERROR, 308 "PMU: GET_RTC command, invalid len: %d want: 0\n", 309 in_len); 310 return; 311 } 312 313 ti = s->tick_offset + (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) 314 / NANOSECONDS_PER_SECOND); 315 out_data[0] = ti >> 24; 316 out_data[1] = ti >> 16; 317 out_data[2] = ti >> 8; 318 out_data[3] = ti; 319 *out_len = 4; 320 } 321 322 static void pmu_cmd_set_rtc(PMUState *s, 323 const uint8_t *in_data, uint8_t in_len, 324 uint8_t *out_data, uint8_t *out_len) 325 { 326 uint32_t ti; 327 328 if (in_len != 4) { 329 qemu_log_mask(LOG_GUEST_ERROR, 330 "PMU: SET_RTC command, invalid len: %d want: 4\n", 331 in_len); 332 return; 333 } 334 335 ti = (((uint32_t)in_data[0]) << 24) + (((uint32_t)in_data[1]) << 16) 336 + (((uint32_t)in_data[2]) << 8) + in_data[3]; 337 338 s->tick_offset = ti - (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) 339 / NANOSECONDS_PER_SECOND); 340 } 341 342 static void pmu_cmd_system_ready(PMUState *s, 343 const uint8_t *in_data, uint8_t in_len, 344 uint8_t *out_data, uint8_t *out_len) 345 { 346 /* Do nothing */ 347 } 348 349 static void pmu_cmd_get_version(PMUState *s, 350 const uint8_t *in_data, uint8_t in_len, 351 uint8_t *out_data, uint8_t *out_len) 352 { 353 *out_len = 1; 354 *out_data = 1; /* ??? Check what Apple does */ 355 } 356 357 static void pmu_cmd_power_events(PMUState *s, 358 const uint8_t *in_data, uint8_t in_len, 359 uint8_t *out_data, uint8_t *out_len) 360 { 361 if (in_len < 1) { 362 qemu_log_mask(LOG_GUEST_ERROR, 363 "PMU: POWER EVENTS command, invalid len %d, want at least 1\n", 364 in_len); 365 return; 366 } 367 368 switch (in_data[0]) { 369 /* Dummies for now */ 370 case PMU_PWR_GET_POWERUP_EVENTS: 371 *out_len = 2; 372 out_data[0] = 0; 373 out_data[1] = 0; 374 break; 375 case PMU_PWR_SET_POWERUP_EVENTS: 376 case PMU_PWR_CLR_POWERUP_EVENTS: 377 break; 378 case PMU_PWR_GET_WAKEUP_EVENTS: 379 *out_len = 2; 380 out_data[0] = 0; 381 out_data[1] = 0; 382 break; 383 case PMU_PWR_SET_WAKEUP_EVENTS: 384 case PMU_PWR_CLR_WAKEUP_EVENTS: 385 break; 386 default: 387 qemu_log_mask(LOG_GUEST_ERROR, 388 "PMU: POWER EVENTS unknown subcommand 0x%02x\n", 389 in_data[0]); 390 } 391 } 392 393 static void pmu_cmd_get_cover(PMUState *s, 394 const uint8_t *in_data, uint8_t in_len, 395 uint8_t *out_data, uint8_t *out_len) 396 { 397 /* Not 100% sure here, will have to check what a real Mac 398 * returns other than byte 0 bit 0 is LID closed on laptops 399 */ 400 *out_len = 1; 401 *out_data = 0x00; 402 } 403 404 static void pmu_cmd_download_status(PMUState *s, 405 const uint8_t *in_data, uint8_t in_len, 406 uint8_t *out_data, uint8_t *out_len) 407 { 408 /* This has to do with PMU firmware updates as far as I can tell. 409 * 410 * We return 0x62 which is what OpenPMU expects 411 */ 412 *out_len = 1; 413 *out_data = 0x62; 414 } 415 416 static void pmu_cmd_read_pmu_ram(PMUState *s, 417 const uint8_t *in_data, uint8_t in_len, 418 uint8_t *out_data, uint8_t *out_len) 419 { 420 if (in_len < 3) { 421 qemu_log_mask(LOG_GUEST_ERROR, 422 "PMU: READ_PMU_RAM command, invalid len %d, expected 3\n", 423 in_len); 424 return; 425 } 426 427 qemu_log_mask(LOG_GUEST_ERROR, 428 "PMU: Unsupported READ_PMU_RAM, args: %02x %02x %02x\n", 429 in_data[0], in_data[1], in_data[2]); 430 431 *out_len = 0; 432 } 433 434 /* description of commands */ 435 typedef struct PMUCmdHandler { 436 uint8_t command; 437 const char *name; 438 void (*handler)(PMUState *s, 439 const uint8_t *in_args, uint8_t in_len, 440 uint8_t *out_args, uint8_t *out_len); 441 } PMUCmdHandler; 442 443 static const PMUCmdHandler PMUCmdHandlers[] = { 444 { PMU_INT_ACK, "INT ACK", pmu_cmd_int_ack }, 445 { PMU_SET_INTR_MASK, "SET INT MASK", pmu_cmd_set_int_mask }, 446 { PMU_ADB_CMD, "ADB COMMAND", pmu_cmd_adb }, 447 { PMU_ADB_POLL_OFF, "ADB POLL OFF", pmu_cmd_adb_poll_off }, 448 { PMU_RESET, "REBOOT", pmu_cmd_reset }, 449 { PMU_SHUTDOWN, "SHUTDOWN", pmu_cmd_shutdown }, 450 { PMU_READ_RTC, "GET RTC", pmu_cmd_get_rtc }, 451 { PMU_SET_RTC, "SET RTC", pmu_cmd_set_rtc }, 452 { PMU_SYSTEM_READY, "SYSTEM READY", pmu_cmd_system_ready }, 453 { PMU_GET_VERSION, "GET VERSION", pmu_cmd_get_version }, 454 { PMU_POWER_EVENTS, "POWER EVENTS", pmu_cmd_power_events }, 455 { PMU_GET_COVER, "GET_COVER", pmu_cmd_get_cover }, 456 { PMU_DOWNLOAD_STATUS, "DOWNLOAD STATUS", pmu_cmd_download_status }, 457 { PMU_READ_PMU_RAM, "READ PMGR RAM", pmu_cmd_read_pmu_ram }, 458 }; 459 460 static void pmu_dispatch_cmd(PMUState *s) 461 { 462 unsigned int i; 463 464 /* No response by default */ 465 s->cmd_rsp_sz = 0; 466 467 for (i = 0; i < ARRAY_SIZE(PMUCmdHandlers); i++) { 468 const PMUCmdHandler *desc = &PMUCmdHandlers[i]; 469 470 if (desc->command != s->cmd) { 471 continue; 472 } 473 474 trace_pmu_dispatch_cmd(desc->name); 475 desc->handler(s, s->cmd_buf, s->cmd_buf_pos, 476 s->cmd_rsp, &s->cmd_rsp_sz); 477 478 if (s->rsplen != -1 && s->rsplen != s->cmd_rsp_sz) { 479 trace_pmu_debug_protocol_string("QEMU internal cmd resp mismatch!"); 480 } else { 481 trace_pmu_debug_protocol_resp_size(s->cmd_rsp_sz); 482 } 483 484 return; 485 } 486 487 trace_pmu_dispatch_unknown_cmd(s->cmd); 488 489 /* Manufacture fake response with 0's */ 490 if (s->rsplen == -1) { 491 s->cmd_rsp_sz = 0; 492 } else { 493 s->cmd_rsp_sz = s->rsplen; 494 memset(s->cmd_rsp, 0, s->rsplen); 495 } 496 } 497 498 static void pmu_update(PMUState *s) 499 { 500 MOS6522PMUState *mps = &s->mos6522_pmu; 501 MOS6522State *ms = MOS6522(mps); 502 ADBBusState *adb_bus = &s->adb_bus; 503 504 /* Only react to changes in reg B */ 505 if (ms->b == s->last_b) { 506 return; 507 } 508 s->last_b = ms->b; 509 510 /* Check the TREQ / TACK state */ 511 switch (ms->b & (TREQ | TACK)) { 512 case TREQ: 513 /* This is an ack release, handle it and bail out */ 514 ms->b |= TACK; 515 s->last_b = ms->b; 516 517 trace_pmu_debug_protocol_string("handshake: TREQ high, setting TACK"); 518 return; 519 case TACK: 520 /* This is a valid request, handle below */ 521 break; 522 case TREQ | TACK: 523 /* This is an idle state */ 524 return; 525 default: 526 /* Invalid state, log and ignore */ 527 trace_pmu_debug_protocol_error(ms->b); 528 return; 529 } 530 531 /* If we wanted to handle commands asynchronously, this is where 532 * we would delay the clearing of TACK until we are ready to send 533 * the response 534 */ 535 536 /* We have a request, handshake TACK so we don't stay in 537 * an invalid state. If we were concurrent with the OS we 538 * should only do this after we grabbed the SR but that isn't 539 * a problem here. 540 */ 541 542 trace_pmu_debug_protocol_clear_treq(s->cmd_state); 543 544 ms->b &= ~TACK; 545 s->last_b = ms->b; 546 547 /* Act according to state */ 548 switch (s->cmd_state) { 549 case pmu_state_idle: 550 if (!(ms->acr & SR_OUT)) { 551 trace_pmu_debug_protocol_string("protocol error! " 552 "state idle, ACR reading"); 553 break; 554 } 555 556 s->cmd = ms->sr; 557 via_set_sr_int(s); 558 s->cmdlen = pmu_data_len[s->cmd][0]; 559 s->rsplen = pmu_data_len[s->cmd][1]; 560 s->cmd_buf_pos = 0; 561 s->cmd_rsp_pos = 0; 562 s->cmd_state = pmu_state_cmd; 563 564 adb_autopoll_block(adb_bus); 565 trace_pmu_debug_protocol_cmd(s->cmd, s->cmdlen, s->rsplen); 566 break; 567 568 case pmu_state_cmd: 569 if (!(ms->acr & SR_OUT)) { 570 trace_pmu_debug_protocol_string("protocol error! " 571 "state cmd, ACR reading"); 572 break; 573 } 574 575 if (s->cmdlen == -1) { 576 trace_pmu_debug_protocol_cmdlen(ms->sr); 577 578 s->cmdlen = ms->sr; 579 if (s->cmdlen > sizeof(s->cmd_buf)) { 580 trace_pmu_debug_protocol_cmd_toobig(s->cmdlen); 581 } 582 } else if (s->cmd_buf_pos < sizeof(s->cmd_buf)) { 583 s->cmd_buf[s->cmd_buf_pos++] = ms->sr; 584 } 585 586 via_set_sr_int(s); 587 break; 588 589 case pmu_state_rsp: 590 if (ms->acr & SR_OUT) { 591 trace_pmu_debug_protocol_string("protocol error! " 592 "state resp, ACR writing"); 593 break; 594 } 595 596 if (s->rsplen == -1) { 597 trace_pmu_debug_protocol_cmd_send_resp_size(s->cmd_rsp_sz); 598 599 ms->sr = s->cmd_rsp_sz; 600 s->rsplen = s->cmd_rsp_sz; 601 } else if (s->cmd_rsp_pos < s->cmd_rsp_sz) { 602 trace_pmu_debug_protocol_cmd_send_resp(s->cmd_rsp_pos, s->rsplen); 603 604 ms->sr = s->cmd_rsp[s->cmd_rsp_pos++]; 605 } 606 607 via_set_sr_int(s); 608 break; 609 } 610 611 /* Check for state completion */ 612 if (s->cmd_state == pmu_state_cmd && s->cmdlen == s->cmd_buf_pos) { 613 trace_pmu_debug_protocol_string("Command reception complete, " 614 "dispatching..."); 615 616 pmu_dispatch_cmd(s); 617 s->cmd_state = pmu_state_rsp; 618 } 619 620 if (s->cmd_state == pmu_state_rsp && s->rsplen == s->cmd_rsp_pos) { 621 trace_pmu_debug_protocol_cmd_resp_complete(ms->ier); 622 623 adb_autopoll_unblock(adb_bus); 624 s->cmd_state = pmu_state_idle; 625 } 626 } 627 628 static uint64_t mos6522_pmu_read(void *opaque, hwaddr addr, unsigned size) 629 { 630 PMUState *s = opaque; 631 MOS6522PMUState *mps = &s->mos6522_pmu; 632 MOS6522State *ms = MOS6522(mps); 633 634 addr = (addr >> 9) & 0xf; 635 return mos6522_read(ms, addr, size); 636 } 637 638 static void mos6522_pmu_write(void *opaque, hwaddr addr, uint64_t val, 639 unsigned size) 640 { 641 PMUState *s = opaque; 642 MOS6522PMUState *mps = &s->mos6522_pmu; 643 MOS6522State *ms = MOS6522(mps); 644 645 addr = (addr >> 9) & 0xf; 646 mos6522_write(ms, addr, val, size); 647 } 648 649 static const MemoryRegionOps mos6522_pmu_ops = { 650 .read = mos6522_pmu_read, 651 .write = mos6522_pmu_write, 652 .endianness = DEVICE_BIG_ENDIAN, 653 .impl = { 654 .min_access_size = 1, 655 .max_access_size = 1, 656 }, 657 }; 658 659 static bool pmu_adb_state_needed(void *opaque) 660 { 661 PMUState *s = opaque; 662 663 return s->has_adb; 664 } 665 666 static const VMStateDescription vmstate_pmu_adb = { 667 .name = "pmu/adb", 668 .version_id = 1, 669 .minimum_version_id = 1, 670 .needed = pmu_adb_state_needed, 671 .fields = (VMStateField[]) { 672 VMSTATE_UINT8(adb_reply_size, PMUState), 673 VMSTATE_BUFFER(adb_reply, PMUState), 674 VMSTATE_END_OF_LIST() 675 } 676 }; 677 678 static const VMStateDescription vmstate_pmu = { 679 .name = "pmu", 680 .version_id = 1, 681 .minimum_version_id = 1, 682 .fields = (VMStateField[]) { 683 VMSTATE_STRUCT(mos6522_pmu.parent_obj, PMUState, 0, vmstate_mos6522, 684 MOS6522State), 685 VMSTATE_UINT8(last_b, PMUState), 686 VMSTATE_UINT8(cmd, PMUState), 687 VMSTATE_UINT32(cmdlen, PMUState), 688 VMSTATE_UINT32(rsplen, PMUState), 689 VMSTATE_UINT8(cmd_buf_pos, PMUState), 690 VMSTATE_BUFFER(cmd_buf, PMUState), 691 VMSTATE_UINT8(cmd_rsp_pos, PMUState), 692 VMSTATE_UINT8(cmd_rsp_sz, PMUState), 693 VMSTATE_BUFFER(cmd_rsp, PMUState), 694 VMSTATE_UINT8(intbits, PMUState), 695 VMSTATE_UINT8(intmask, PMUState), 696 VMSTATE_UINT32(tick_offset, PMUState), 697 VMSTATE_TIMER_PTR(one_sec_timer, PMUState), 698 VMSTATE_INT64(one_sec_target, PMUState), 699 VMSTATE_END_OF_LIST() 700 }, 701 .subsections = (const VMStateDescription * []) { 702 &vmstate_pmu_adb, 703 NULL 704 } 705 }; 706 707 static void pmu_reset(DeviceState *dev) 708 { 709 PMUState *s = VIA_PMU(dev); 710 711 /* OpenBIOS needs to do this? MacOS 9 needs it */ 712 s->intmask = PMU_INT_ADB | PMU_INT_TICK; 713 s->intbits = 0; 714 715 s->cmd_state = pmu_state_idle; 716 } 717 718 static void pmu_realize(DeviceState *dev, Error **errp) 719 { 720 PMUState *s = VIA_PMU(dev); 721 SysBusDevice *sbd; 722 ADBBusState *adb_bus = &s->adb_bus; 723 struct tm tm; 724 725 if (!sysbus_realize(SYS_BUS_DEVICE(&s->mos6522_pmu), errp)) { 726 return; 727 } 728 729 /* Pass IRQ from 6522 */ 730 sbd = SYS_BUS_DEVICE(s); 731 sysbus_pass_irq(sbd, SYS_BUS_DEVICE(&s->mos6522_pmu)); 732 733 qemu_get_timedate(&tm, 0); 734 s->tick_offset = (uint32_t)mktimegm(&tm) + RTC_OFFSET; 735 s->one_sec_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL, pmu_one_sec_timer, s); 736 s->one_sec_target = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000; 737 timer_mod(s->one_sec_timer, s->one_sec_target); 738 739 if (s->has_adb) { 740 qbus_init(&s->adb_bus, sizeof(s->adb_bus), TYPE_ADB_BUS, 741 dev, "adb.0"); 742 adb_register_autopoll_callback(adb_bus, pmu_adb_poll, s); 743 } 744 } 745 746 static void pmu_init(Object *obj) 747 { 748 SysBusDevice *d = SYS_BUS_DEVICE(obj); 749 PMUState *s = VIA_PMU(obj); 750 751 object_property_add_link(obj, "gpio", TYPE_MACIO_GPIO, 752 (Object **) &s->gpio, 753 qdev_prop_allow_set_link_before_realize, 754 0); 755 756 object_initialize_child(obj, "mos6522-pmu", &s->mos6522_pmu, 757 TYPE_MOS6522_PMU); 758 759 memory_region_init_io(&s->mem, obj, &mos6522_pmu_ops, s, "via-pmu", 760 0x2000); 761 sysbus_init_mmio(d, &s->mem); 762 } 763 764 static Property pmu_properties[] = { 765 DEFINE_PROP_BOOL("has-adb", PMUState, has_adb, true), 766 DEFINE_PROP_END_OF_LIST() 767 }; 768 769 static void pmu_class_init(ObjectClass *oc, void *data) 770 { 771 DeviceClass *dc = DEVICE_CLASS(oc); 772 773 dc->realize = pmu_realize; 774 dc->reset = pmu_reset; 775 dc->vmsd = &vmstate_pmu; 776 device_class_set_props(dc, pmu_properties); 777 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 778 } 779 780 static const TypeInfo pmu_type_info = { 781 .name = TYPE_VIA_PMU, 782 .parent = TYPE_SYS_BUS_DEVICE, 783 .instance_size = sizeof(PMUState), 784 .instance_init = pmu_init, 785 .class_init = pmu_class_init, 786 }; 787 788 static void mos6522_pmu_portB_write(MOS6522State *s) 789 { 790 MOS6522PMUState *mps = container_of(s, MOS6522PMUState, parent_obj); 791 PMUState *ps = container_of(mps, PMUState, mos6522_pmu); 792 793 pmu_update(ps); 794 } 795 796 static void mos6522_pmu_reset_hold(Object *obj) 797 { 798 MOS6522State *ms = MOS6522(obj); 799 MOS6522PMUState *mps = container_of(ms, MOS6522PMUState, parent_obj); 800 PMUState *s = container_of(mps, PMUState, mos6522_pmu); 801 MOS6522DeviceClass *mdc = MOS6522_GET_CLASS(ms); 802 803 if (mdc->parent_phases.hold) { 804 mdc->parent_phases.hold(obj); 805 } 806 807 ms->timers[0].frequency = VIA_TIMER_FREQ; 808 ms->timers[1].frequency = (SCALE_US * 6000) / 4700; 809 810 s->last_b = ms->b = TACK | TREQ; 811 } 812 813 static void mos6522_pmu_class_init(ObjectClass *oc, void *data) 814 { 815 ResettableClass *rc = RESETTABLE_CLASS(oc); 816 MOS6522DeviceClass *mdc = MOS6522_CLASS(oc); 817 818 resettable_class_set_parent_phases(rc, NULL, mos6522_pmu_reset_hold, 819 NULL, &mdc->parent_phases); 820 mdc->portB_write = mos6522_pmu_portB_write; 821 } 822 823 static const TypeInfo mos6522_pmu_type_info = { 824 .name = TYPE_MOS6522_PMU, 825 .parent = TYPE_MOS6522, 826 .instance_size = sizeof(MOS6522PMUState), 827 .class_init = mos6522_pmu_class_init, 828 }; 829 830 static void pmu_register_types(void) 831 { 832 type_register_static(&pmu_type_info); 833 type_register_static(&mos6522_pmu_type_info); 834 } 835 836 type_init(pmu_register_types) 837