1 /* 2 * PMBus wrapper over SMBus 3 * 4 * Copyright 2021 Google LLC 5 * 6 * SPDX-License-Identifier: GPL-2.0-or-later 7 */ 8 9 #include "qemu/osdep.h" 10 #include <math.h> 11 #include "hw/i2c/pmbus_device.h" 12 #include "migration/vmstate.h" 13 #include "qemu/module.h" 14 #include "qemu/log.h" 15 16 uint16_t pmbus_data2direct_mode(PMBusCoefficients c, uint32_t value) 17 { 18 /* R is usually negative to fit large readings into 16 bits */ 19 uint16_t y = (c.m * value + c.b) * pow(10, c.R); 20 return y; 21 } 22 23 uint32_t pmbus_direct_mode2data(PMBusCoefficients c, uint16_t value) 24 { 25 /* X = (Y * 10^-R - b) / m */ 26 uint32_t x = (value / pow(10, c.R) - c.b) / c.m; 27 return x; 28 } 29 30 uint16_t pmbus_data2linear_mode(uint16_t value, int exp) 31 { 32 /* L = D * 2^(-e) */ 33 if (exp < 0) { 34 return value << (-exp); 35 } 36 return value >> exp; 37 } 38 39 uint16_t pmbus_linear_mode2data(uint16_t value, int exp) 40 { 41 /* D = L * 2^e */ 42 if (exp < 0) { 43 return value >> (-exp); 44 } 45 return value << exp; 46 } 47 48 void pmbus_send(PMBusDevice *pmdev, const uint8_t *data, uint16_t len) 49 { 50 if (pmdev->out_buf_len + len > SMBUS_DATA_MAX_LEN) { 51 qemu_log_mask(LOG_GUEST_ERROR, 52 "PMBus device tried to send too much data"); 53 len = 0; 54 } 55 56 for (int i = len - 1; i >= 0; i--) { 57 pmdev->out_buf[i + pmdev->out_buf_len] = data[len - i - 1]; 58 } 59 pmdev->out_buf_len += len; 60 } 61 62 /* Internal only, convert unsigned ints to the little endian bus */ 63 static void pmbus_send_uint(PMBusDevice *pmdev, uint64_t data, uint8_t size) 64 { 65 uint8_t bytes[8]; 66 g_assert(size <= 8); 67 68 for (int i = 0; i < size; i++) { 69 bytes[i] = data & 0xFF; 70 data = data >> 8; 71 } 72 pmbus_send(pmdev, bytes, size); 73 } 74 75 void pmbus_send8(PMBusDevice *pmdev, uint8_t data) 76 { 77 pmbus_send_uint(pmdev, data, 1); 78 } 79 80 void pmbus_send16(PMBusDevice *pmdev, uint16_t data) 81 { 82 pmbus_send_uint(pmdev, data, 2); 83 } 84 85 void pmbus_send32(PMBusDevice *pmdev, uint32_t data) 86 { 87 pmbus_send_uint(pmdev, data, 4); 88 } 89 90 void pmbus_send64(PMBusDevice *pmdev, uint64_t data) 91 { 92 pmbus_send_uint(pmdev, data, 8); 93 } 94 95 void pmbus_send_string(PMBusDevice *pmdev, const char *data) 96 { 97 if (!data) { 98 qemu_log_mask(LOG_GUEST_ERROR, 99 "%s: %s: uninitialised read from 0x%02x\n", 100 __func__, DEVICE(pmdev)->canonical_path, pmdev->code); 101 return; 102 } 103 104 size_t len = strlen(data); 105 g_assert(len + pmdev->out_buf_len < SMBUS_DATA_MAX_LEN); 106 pmdev->out_buf[len + pmdev->out_buf_len] = len; 107 108 for (int i = len - 1; i >= 0; i--) { 109 pmdev->out_buf[i + pmdev->out_buf_len] = data[len - 1 - i]; 110 } 111 pmdev->out_buf_len += len + 1; 112 } 113 114 uint8_t pmbus_receive_block(PMBusDevice *pmdev, uint8_t *dest, size_t len) 115 { 116 /* dest may contain data from previous writes */ 117 memset(dest, 0, len); 118 119 /* Exclude command code from return value */ 120 pmdev->in_buf++; 121 pmdev->in_buf_len--; 122 123 /* The byte after the command code denotes the length */ 124 uint8_t sent_len = pmdev->in_buf[0]; 125 126 if (sent_len != pmdev->in_buf_len - 1) { 127 qemu_log_mask(LOG_GUEST_ERROR, 128 "%s: length mismatch. Expected %d bytes, got %d bytes\n", 129 __func__, sent_len, pmdev->in_buf_len - 1); 130 } 131 132 /* exclude length byte */ 133 pmdev->in_buf++; 134 pmdev->in_buf_len--; 135 136 if (pmdev->in_buf_len < len) { 137 len = pmdev->in_buf_len; 138 } 139 memcpy(dest, pmdev->in_buf, len); 140 return len; 141 } 142 143 144 static uint64_t pmbus_receive_uint(PMBusDevice *pmdev) 145 { 146 uint64_t ret = 0; 147 148 /* Exclude command code from return value */ 149 pmdev->in_buf++; 150 pmdev->in_buf_len--; 151 152 for (int i = pmdev->in_buf_len - 1; i >= 0; i--) { 153 ret = ret << 8 | pmdev->in_buf[i]; 154 } 155 return ret; 156 } 157 158 uint8_t pmbus_receive8(PMBusDevice *pmdev) 159 { 160 if (pmdev->in_buf_len - 1 != 1) { 161 qemu_log_mask(LOG_GUEST_ERROR, 162 "%s: length mismatch. Expected 1 byte, got %d bytes\n", 163 __func__, pmdev->in_buf_len - 1); 164 } 165 return pmbus_receive_uint(pmdev); 166 } 167 168 uint16_t pmbus_receive16(PMBusDevice *pmdev) 169 { 170 if (pmdev->in_buf_len - 1 != 2) { 171 qemu_log_mask(LOG_GUEST_ERROR, 172 "%s: length mismatch. Expected 2 bytes, got %d bytes\n", 173 __func__, pmdev->in_buf_len - 1); 174 } 175 return pmbus_receive_uint(pmdev); 176 } 177 178 uint32_t pmbus_receive32(PMBusDevice *pmdev) 179 { 180 if (pmdev->in_buf_len - 1 != 4) { 181 qemu_log_mask(LOG_GUEST_ERROR, 182 "%s: length mismatch. Expected 4 bytes, got %d bytes\n", 183 __func__, pmdev->in_buf_len - 1); 184 } 185 return pmbus_receive_uint(pmdev); 186 } 187 188 uint64_t pmbus_receive64(PMBusDevice *pmdev) 189 { 190 if (pmdev->in_buf_len - 1 != 8) { 191 qemu_log_mask(LOG_GUEST_ERROR, 192 "%s: length mismatch. Expected 8 bytes, got %d bytes\n", 193 __func__, pmdev->in_buf_len - 1); 194 } 195 return pmbus_receive_uint(pmdev); 196 } 197 198 static uint8_t pmbus_out_buf_pop(PMBusDevice *pmdev) 199 { 200 if (pmdev->out_buf_len == 0) { 201 qemu_log_mask(LOG_GUEST_ERROR, 202 "%s: tried to read from empty buffer", 203 __func__); 204 return PMBUS_ERR_BYTE; 205 } 206 uint8_t data = pmdev->out_buf[pmdev->out_buf_len - 1]; 207 pmdev->out_buf_len--; 208 return data; 209 } 210 211 static void pmbus_quick_cmd(SMBusDevice *smd, uint8_t read) 212 { 213 PMBusDevice *pmdev = PMBUS_DEVICE(smd); 214 PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev); 215 216 if (pmdc->quick_cmd) { 217 pmdc->quick_cmd(pmdev, read); 218 } 219 } 220 221 static uint8_t pmbus_pages_num(PMBusDevice *pmdev) 222 { 223 const PMBusDeviceClass *k = PMBUS_DEVICE_GET_CLASS(pmdev); 224 225 /* some PMBus devices don't use the PAGE command, so they get 1 page */ 226 return k->device_num_pages ? : 1; 227 } 228 229 static void pmbus_pages_alloc(PMBusDevice *pmdev) 230 { 231 pmdev->num_pages = pmbus_pages_num(pmdev); 232 pmdev->pages = g_new0(PMBusPage, pmdev->num_pages); 233 } 234 235 void pmbus_check_limits(PMBusDevice *pmdev) 236 { 237 for (int i = 0; i < pmdev->num_pages; i++) { 238 if ((pmdev->pages[i].operation & PB_OP_ON) == 0) { 239 continue; /* don't check powered off devices */ 240 } 241 242 if (pmdev->pages[i].read_vout > pmdev->pages[i].vout_ov_fault_limit) { 243 pmdev->pages[i].status_word |= PB_STATUS_VOUT; 244 pmdev->pages[i].status_vout |= PB_STATUS_VOUT_OV_FAULT; 245 } 246 247 if (pmdev->pages[i].read_vout > pmdev->pages[i].vout_ov_warn_limit) { 248 pmdev->pages[i].status_word |= PB_STATUS_VOUT; 249 pmdev->pages[i].status_vout |= PB_STATUS_VOUT_OV_WARN; 250 } 251 252 if (pmdev->pages[i].read_vout < pmdev->pages[i].vout_uv_warn_limit) { 253 pmdev->pages[i].status_word |= PB_STATUS_VOUT; 254 pmdev->pages[i].status_vout |= PB_STATUS_VOUT_UV_WARN; 255 } 256 257 if (pmdev->pages[i].read_vout < pmdev->pages[i].vout_uv_fault_limit) { 258 pmdev->pages[i].status_word |= PB_STATUS_VOUT; 259 pmdev->pages[i].status_vout |= PB_STATUS_VOUT_UV_FAULT; 260 } 261 262 if (pmdev->pages[i].read_vin > pmdev->pages[i].vin_ov_warn_limit) { 263 pmdev->pages[i].status_word |= PB_STATUS_INPUT; 264 pmdev->pages[i].status_input |= PB_STATUS_INPUT_VIN_OV_WARN; 265 } 266 267 if (pmdev->pages[i].read_vin < pmdev->pages[i].vin_uv_warn_limit) { 268 pmdev->pages[i].status_word |= PB_STATUS_INPUT; 269 pmdev->pages[i].status_input |= PB_STATUS_INPUT_VIN_UV_WARN; 270 } 271 272 if (pmdev->pages[i].read_iout > pmdev->pages[i].iout_oc_warn_limit) { 273 pmdev->pages[i].status_word |= PB_STATUS_IOUT_POUT; 274 pmdev->pages[i].status_iout |= PB_STATUS_IOUT_OC_WARN; 275 } 276 277 if (pmdev->pages[i].read_iout > pmdev->pages[i].iout_oc_fault_limit) { 278 pmdev->pages[i].status_word |= PB_STATUS_IOUT_POUT; 279 pmdev->pages[i].status_iout |= PB_STATUS_IOUT_OC_FAULT; 280 } 281 282 if (pmdev->pages[i].read_pin > pmdev->pages[i].pin_op_warn_limit) { 283 pmdev->pages[i].status_word |= PB_STATUS_INPUT; 284 pmdev->pages[i].status_input |= PB_STATUS_INPUT_PIN_OP_WARN; 285 } 286 287 if (pmdev->pages[i].read_temperature_1 288 > pmdev->pages[i].ot_fault_limit) { 289 pmdev->pages[i].status_word |= PB_STATUS_TEMPERATURE; 290 pmdev->pages[i].status_temperature |= PB_STATUS_OT_FAULT; 291 } 292 293 if (pmdev->pages[i].read_temperature_1 294 > pmdev->pages[i].ot_warn_limit) { 295 pmdev->pages[i].status_word |= PB_STATUS_TEMPERATURE; 296 pmdev->pages[i].status_temperature |= PB_STATUS_OT_WARN; 297 } 298 } 299 } 300 301 void pmbus_idle(PMBusDevice *pmdev) 302 { 303 pmdev->code = PMBUS_IDLE_STATE; 304 } 305 306 /* assert the status_cml error upon receipt of malformed command */ 307 static void pmbus_cml_error(PMBusDevice *pmdev) 308 { 309 for (int i = 0; i < pmdev->num_pages; i++) { 310 pmdev->pages[i].status_word |= PMBUS_STATUS_CML; 311 pmdev->pages[i].status_cml |= PB_CML_FAULT_INVALID_CMD; 312 } 313 } 314 315 static uint8_t pmbus_receive_byte(SMBusDevice *smd) 316 { 317 PMBusDevice *pmdev = PMBUS_DEVICE(smd); 318 PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev); 319 uint8_t ret = PMBUS_ERR_BYTE; 320 uint8_t index; 321 322 if (pmdev->out_buf_len != 0) { 323 ret = pmbus_out_buf_pop(pmdev); 324 return ret; 325 } 326 327 /* 328 * Reading from all pages will return the value from page 0, 329 * means that all subsequent commands are to be applied to all output. 330 */ 331 if (pmdev->page == PB_ALL_PAGES) { 332 index = 0; 333 } else if (pmdev->page > pmdev->num_pages - 1) { 334 qemu_log_mask(LOG_GUEST_ERROR, 335 "%s: page %d is out of range\n", 336 __func__, pmdev->page); 337 pmbus_cml_error(pmdev); 338 return PMBUS_ERR_BYTE; 339 } else { 340 index = pmdev->page; 341 } 342 343 switch (pmdev->code) { 344 case PMBUS_PAGE: 345 pmbus_send8(pmdev, pmdev->page); 346 break; 347 348 case PMBUS_OPERATION: /* R/W byte */ 349 pmbus_send8(pmdev, pmdev->pages[index].operation); 350 break; 351 352 case PMBUS_ON_OFF_CONFIG: /* R/W byte */ 353 pmbus_send8(pmdev, pmdev->pages[index].on_off_config); 354 break; 355 356 case PMBUS_PHASE: /* R/W byte */ 357 pmbus_send8(pmdev, pmdev->pages[index].phase); 358 break; 359 360 case PMBUS_WRITE_PROTECT: /* R/W byte */ 361 pmbus_send8(pmdev, pmdev->pages[index].write_protect); 362 break; 363 364 case PMBUS_CAPABILITY: 365 pmbus_send8(pmdev, pmdev->capability); 366 if (pmdev->capability & BIT(7)) { 367 qemu_log_mask(LOG_UNIMP, 368 "%s: PEC is enabled but not yet supported.\n", 369 __func__); 370 } 371 break; 372 373 case PMBUS_VOUT_MODE: /* R/W byte */ 374 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MODE) { 375 pmbus_send8(pmdev, pmdev->pages[index].vout_mode); 376 } else { 377 goto passthough; 378 } 379 break; 380 381 case PMBUS_VOUT_COMMAND: /* R/W word */ 382 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 383 pmbus_send16(pmdev, pmdev->pages[index].vout_command); 384 } else { 385 goto passthough; 386 } 387 break; 388 389 case PMBUS_VOUT_TRIM: /* R/W word */ 390 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 391 pmbus_send16(pmdev, pmdev->pages[index].vout_trim); 392 } else { 393 goto passthough; 394 } 395 break; 396 397 case PMBUS_VOUT_CAL_OFFSET: /* R/W word */ 398 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 399 pmbus_send16(pmdev, pmdev->pages[index].vout_cal_offset); 400 } else { 401 goto passthough; 402 } 403 break; 404 405 case PMBUS_VOUT_MAX: /* R/W word */ 406 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 407 pmbus_send16(pmdev, pmdev->pages[index].vout_max); 408 } else { 409 goto passthough; 410 } 411 break; 412 413 case PMBUS_VOUT_MARGIN_HIGH: /* R/W word */ 414 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) { 415 pmbus_send16(pmdev, pmdev->pages[index].vout_margin_high); 416 } else { 417 goto passthough; 418 } 419 break; 420 421 case PMBUS_VOUT_MARGIN_LOW: /* R/W word */ 422 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) { 423 pmbus_send16(pmdev, pmdev->pages[index].vout_margin_low); 424 } else { 425 goto passthough; 426 } 427 break; 428 429 case PMBUS_VOUT_TRANSITION_RATE: /* R/W word */ 430 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 431 pmbus_send16(pmdev, pmdev->pages[index].vout_transition_rate); 432 } else { 433 goto passthough; 434 } 435 break; 436 437 case PMBUS_VOUT_DROOP: /* R/W word */ 438 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 439 pmbus_send16(pmdev, pmdev->pages[index].vout_droop); 440 } else { 441 goto passthough; 442 } 443 break; 444 445 case PMBUS_VOUT_SCALE_LOOP: /* R/W word */ 446 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 447 pmbus_send16(pmdev, pmdev->pages[index].vout_scale_loop); 448 } else { 449 goto passthough; 450 } 451 break; 452 453 case PMBUS_VOUT_SCALE_MONITOR: /* R/W word */ 454 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 455 pmbus_send16(pmdev, pmdev->pages[index].vout_scale_monitor); 456 } else { 457 goto passthough; 458 } 459 break; 460 461 case PMBUS_VOUT_MIN: /* R/W word */ 462 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) { 463 pmbus_send16(pmdev, pmdev->pages[index].vout_min); 464 } else { 465 goto passthough; 466 } 467 break; 468 469 /* TODO: implement coefficients support */ 470 471 case PMBUS_POUT_MAX: /* R/W word */ 472 if (pmdev->pages[index].page_flags & PB_HAS_POUT) { 473 pmbus_send16(pmdev, pmdev->pages[index].pout_max); 474 } else { 475 goto passthough; 476 } 477 break; 478 479 case PMBUS_VIN_ON: /* R/W word */ 480 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 481 pmbus_send16(pmdev, pmdev->pages[index].vin_on); 482 } else { 483 goto passthough; 484 } 485 break; 486 487 case PMBUS_VIN_OFF: /* R/W word */ 488 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 489 pmbus_send16(pmdev, pmdev->pages[index].vin_off); 490 } else { 491 goto passthough; 492 } 493 break; 494 495 case PMBUS_IOUT_CAL_GAIN: /* R/W word */ 496 if (pmdev->pages[index].page_flags & PB_HAS_IOUT_GAIN) { 497 pmbus_send16(pmdev, pmdev->pages[index].iout_cal_gain); 498 } else { 499 goto passthough; 500 } 501 break; 502 503 case PMBUS_FAN_CONFIG_1_2: /* R/W byte */ 504 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 505 pmbus_send8(pmdev, pmdev->pages[index].fan_config_1_2); 506 } else { 507 goto passthough; 508 } 509 break; 510 511 case PMBUS_FAN_COMMAND_1: /* R/W word */ 512 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 513 pmbus_send16(pmdev, pmdev->pages[index].fan_command_1); 514 } else { 515 goto passthough; 516 } 517 break; 518 519 case PMBUS_FAN_COMMAND_2: /* R/W word */ 520 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 521 pmbus_send16(pmdev, pmdev->pages[index].fan_command_2); 522 } else { 523 goto passthough; 524 } 525 break; 526 527 case PMBUS_FAN_CONFIG_3_4: /* R/W byte */ 528 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 529 pmbus_send8(pmdev, pmdev->pages[index].fan_config_3_4); 530 } else { 531 goto passthough; 532 } 533 break; 534 535 case PMBUS_FAN_COMMAND_3: /* R/W word */ 536 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 537 pmbus_send16(pmdev, pmdev->pages[index].fan_command_3); 538 } else { 539 goto passthough; 540 } 541 break; 542 543 case PMBUS_FAN_COMMAND_4: /* R/W word */ 544 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 545 pmbus_send16(pmdev, pmdev->pages[index].fan_command_4); 546 } else { 547 goto passthough; 548 } 549 break; 550 551 case PMBUS_VOUT_OV_FAULT_LIMIT: /* R/W word */ 552 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 553 pmbus_send16(pmdev, pmdev->pages[index].vout_ov_fault_limit); 554 } else { 555 goto passthough; 556 } 557 break; 558 559 case PMBUS_VOUT_OV_FAULT_RESPONSE: /* R/W byte */ 560 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 561 pmbus_send8(pmdev, pmdev->pages[index].vout_ov_fault_response); 562 } else { 563 goto passthough; 564 } 565 break; 566 567 case PMBUS_VOUT_OV_WARN_LIMIT: /* R/W word */ 568 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 569 pmbus_send16(pmdev, pmdev->pages[index].vout_ov_warn_limit); 570 } else { 571 goto passthough; 572 } 573 break; 574 575 case PMBUS_VOUT_UV_WARN_LIMIT: /* R/W word */ 576 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 577 pmbus_send16(pmdev, pmdev->pages[index].vout_uv_warn_limit); 578 } else { 579 goto passthough; 580 } 581 break; 582 583 case PMBUS_VOUT_UV_FAULT_LIMIT: /* R/W word */ 584 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 585 pmbus_send16(pmdev, pmdev->pages[index].vout_uv_fault_limit); 586 } else { 587 goto passthough; 588 } 589 break; 590 591 case PMBUS_VOUT_UV_FAULT_RESPONSE: /* R/W byte */ 592 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 593 pmbus_send8(pmdev, pmdev->pages[index].vout_uv_fault_response); 594 } else { 595 goto passthough; 596 } 597 break; 598 599 case PMBUS_IOUT_OC_FAULT_LIMIT: /* R/W word */ 600 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 601 pmbus_send16(pmdev, pmdev->pages[index].iout_oc_fault_limit); 602 } else { 603 goto passthough; 604 } 605 break; 606 607 case PMBUS_IOUT_OC_FAULT_RESPONSE: /* R/W byte */ 608 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 609 pmbus_send8(pmdev, pmdev->pages[index].iout_oc_fault_response); 610 } else { 611 goto passthough; 612 } 613 break; 614 615 case PMBUS_IOUT_OC_LV_FAULT_LIMIT: /* R/W word */ 616 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 617 pmbus_send16(pmdev, pmdev->pages[index].iout_oc_lv_fault_limit); 618 } else { 619 goto passthough; 620 } 621 break; 622 623 case PMBUS_IOUT_OC_LV_FAULT_RESPONSE: /* R/W byte */ 624 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 625 pmbus_send8(pmdev, pmdev->pages[index].iout_oc_lv_fault_response); 626 } else { 627 goto passthough; 628 } 629 break; 630 631 case PMBUS_IOUT_OC_WARN_LIMIT: /* R/W word */ 632 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 633 pmbus_send16(pmdev, pmdev->pages[index].iout_oc_warn_limit); 634 } else { 635 goto passthough; 636 } 637 break; 638 639 case PMBUS_IOUT_UC_FAULT_LIMIT: /* R/W word */ 640 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 641 pmbus_send16(pmdev, pmdev->pages[index].iout_uc_fault_limit); 642 } else { 643 goto passthough; 644 } 645 break; 646 647 case PMBUS_IOUT_UC_FAULT_RESPONSE: /* R/W byte */ 648 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 649 pmbus_send8(pmdev, pmdev->pages[index].iout_uc_fault_response); 650 } else { 651 goto passthough; 652 } 653 break; 654 655 case PMBUS_OT_FAULT_LIMIT: /* R/W word */ 656 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 657 pmbus_send16(pmdev, pmdev->pages[index].ot_fault_limit); 658 } else { 659 goto passthough; 660 } 661 break; 662 663 case PMBUS_OT_FAULT_RESPONSE: /* R/W byte */ 664 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 665 pmbus_send8(pmdev, pmdev->pages[index].ot_fault_response); 666 } else { 667 goto passthough; 668 } 669 break; 670 671 case PMBUS_OT_WARN_LIMIT: /* R/W word */ 672 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 673 pmbus_send16(pmdev, pmdev->pages[index].ot_warn_limit); 674 } else { 675 goto passthough; 676 } 677 break; 678 679 case PMBUS_UT_WARN_LIMIT: /* R/W word */ 680 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 681 pmbus_send16(pmdev, pmdev->pages[index].ut_warn_limit); 682 } else { 683 goto passthough; 684 } 685 break; 686 687 case PMBUS_UT_FAULT_LIMIT: /* R/W word */ 688 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 689 pmbus_send16(pmdev, pmdev->pages[index].ut_fault_limit); 690 } else { 691 goto passthough; 692 } 693 break; 694 695 case PMBUS_UT_FAULT_RESPONSE: /* R/W byte */ 696 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 697 pmbus_send8(pmdev, pmdev->pages[index].ut_fault_response); 698 } else { 699 goto passthough; 700 } 701 break; 702 703 case PMBUS_VIN_OV_FAULT_LIMIT: /* R/W word */ 704 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 705 pmbus_send16(pmdev, pmdev->pages[index].vin_ov_fault_limit); 706 } else { 707 goto passthough; 708 } 709 break; 710 711 case PMBUS_VIN_OV_FAULT_RESPONSE: /* R/W byte */ 712 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 713 pmbus_send8(pmdev, pmdev->pages[index].vin_ov_fault_response); 714 } else { 715 goto passthough; 716 } 717 break; 718 719 case PMBUS_VIN_OV_WARN_LIMIT: /* R/W word */ 720 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 721 pmbus_send16(pmdev, pmdev->pages[index].vin_ov_warn_limit); 722 } else { 723 goto passthough; 724 } 725 break; 726 727 case PMBUS_VIN_UV_WARN_LIMIT: /* R/W word */ 728 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 729 pmbus_send16(pmdev, pmdev->pages[index].vin_uv_warn_limit); 730 } else { 731 goto passthough; 732 } 733 break; 734 735 case PMBUS_VIN_UV_FAULT_LIMIT: /* R/W word */ 736 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 737 pmbus_send16(pmdev, pmdev->pages[index].vin_uv_fault_limit); 738 } else { 739 goto passthough; 740 } 741 break; 742 743 case PMBUS_VIN_UV_FAULT_RESPONSE: /* R/W byte */ 744 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 745 pmbus_send8(pmdev, pmdev->pages[index].vin_uv_fault_response); 746 } else { 747 goto passthough; 748 } 749 break; 750 751 case PMBUS_IIN_OC_FAULT_LIMIT: /* R/W word */ 752 if (pmdev->pages[index].page_flags & PB_HAS_IIN) { 753 pmbus_send16(pmdev, pmdev->pages[index].iin_oc_fault_limit); 754 } else { 755 goto passthough; 756 } 757 break; 758 759 case PMBUS_IIN_OC_FAULT_RESPONSE: /* R/W byte */ 760 if (pmdev->pages[index].page_flags & PB_HAS_IIN) { 761 pmbus_send8(pmdev, pmdev->pages[index].iin_oc_fault_response); 762 } else { 763 goto passthough; 764 } 765 break; 766 767 case PMBUS_IIN_OC_WARN_LIMIT: /* R/W word */ 768 if (pmdev->pages[index].page_flags & PB_HAS_IIN) { 769 pmbus_send16(pmdev, pmdev->pages[index].iin_oc_warn_limit); 770 } else { 771 goto passthough; 772 } 773 break; 774 775 case PMBUS_POUT_OP_FAULT_LIMIT: /* R/W word */ 776 if (pmdev->pages[index].page_flags & PB_HAS_POUT) { 777 pmbus_send16(pmdev, pmdev->pages[index].pout_op_fault_limit); 778 } else { 779 goto passthough; 780 } 781 break; 782 783 case PMBUS_POUT_OP_FAULT_RESPONSE: /* R/W byte */ 784 if (pmdev->pages[index].page_flags & PB_HAS_POUT) { 785 pmbus_send8(pmdev, pmdev->pages[index].pout_op_fault_response); 786 } else { 787 goto passthough; 788 } 789 break; 790 791 case PMBUS_POUT_OP_WARN_LIMIT: /* R/W word */ 792 if (pmdev->pages[index].page_flags & PB_HAS_POUT) { 793 pmbus_send16(pmdev, pmdev->pages[index].pout_op_warn_limit); 794 } else { 795 goto passthough; 796 } 797 break; 798 799 case PMBUS_PIN_OP_WARN_LIMIT: /* R/W word */ 800 if (pmdev->pages[index].page_flags & PB_HAS_PIN) { 801 pmbus_send16(pmdev, pmdev->pages[index].pin_op_warn_limit); 802 } else { 803 goto passthough; 804 } 805 break; 806 807 case PMBUS_STATUS_BYTE: /* R/W byte */ 808 pmbus_send8(pmdev, pmdev->pages[index].status_word & 0xFF); 809 break; 810 811 case PMBUS_STATUS_WORD: /* R/W word */ 812 pmbus_send16(pmdev, pmdev->pages[index].status_word); 813 break; 814 815 case PMBUS_STATUS_VOUT: /* R/W byte */ 816 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 817 pmbus_send8(pmdev, pmdev->pages[index].status_vout); 818 } else { 819 goto passthough; 820 } 821 break; 822 823 case PMBUS_STATUS_IOUT: /* R/W byte */ 824 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 825 pmbus_send8(pmdev, pmdev->pages[index].status_iout); 826 } else { 827 goto passthough; 828 } 829 break; 830 831 case PMBUS_STATUS_INPUT: /* R/W byte */ 832 if (pmdev->pages[index].page_flags & PB_HAS_VIN || 833 pmdev->pages[index].page_flags & PB_HAS_IIN || 834 pmdev->pages[index].page_flags & PB_HAS_PIN) { 835 pmbus_send8(pmdev, pmdev->pages[index].status_input); 836 } else { 837 goto passthough; 838 } 839 break; 840 841 case PMBUS_STATUS_TEMPERATURE: /* R/W byte */ 842 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 843 pmbus_send8(pmdev, pmdev->pages[index].status_temperature); 844 } else { 845 goto passthough; 846 } 847 break; 848 849 case PMBUS_STATUS_CML: /* R/W byte */ 850 pmbus_send8(pmdev, pmdev->pages[index].status_cml); 851 break; 852 853 case PMBUS_STATUS_OTHER: /* R/W byte */ 854 pmbus_send8(pmdev, pmdev->pages[index].status_other); 855 break; 856 857 case PMBUS_STATUS_MFR_SPECIFIC: /* R/W byte */ 858 pmbus_send8(pmdev, pmdev->pages[index].status_mfr_specific); 859 break; 860 861 case PMBUS_STATUS_FANS_1_2: /* R/W byte */ 862 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 863 pmbus_send8(pmdev, pmdev->pages[index].status_fans_1_2); 864 } else { 865 goto passthough; 866 } 867 break; 868 869 case PMBUS_STATUS_FANS_3_4: /* R/W byte */ 870 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 871 pmbus_send8(pmdev, pmdev->pages[index].status_fans_3_4); 872 } else { 873 goto passthough; 874 } 875 break; 876 877 case PMBUS_READ_EIN: /* Read-Only block 5 bytes */ 878 if (pmdev->pages[index].page_flags & PB_HAS_EIN) { 879 pmbus_send(pmdev, pmdev->pages[index].read_ein, 5); 880 } else { 881 goto passthough; 882 } 883 break; 884 885 case PMBUS_READ_EOUT: /* Read-Only block 5 bytes */ 886 if (pmdev->pages[index].page_flags & PB_HAS_EOUT) { 887 pmbus_send(pmdev, pmdev->pages[index].read_eout, 5); 888 } else { 889 goto passthough; 890 } 891 break; 892 893 case PMBUS_READ_VIN: /* Read-Only word */ 894 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 895 pmbus_send16(pmdev, pmdev->pages[index].read_vin); 896 } else { 897 goto passthough; 898 } 899 break; 900 901 case PMBUS_READ_IIN: /* Read-Only word */ 902 if (pmdev->pages[index].page_flags & PB_HAS_IIN) { 903 pmbus_send16(pmdev, pmdev->pages[index].read_iin); 904 } else { 905 goto passthough; 906 } 907 break; 908 909 case PMBUS_READ_VCAP: /* Read-Only word */ 910 if (pmdev->pages[index].page_flags & PB_HAS_VCAP) { 911 pmbus_send16(pmdev, pmdev->pages[index].read_vcap); 912 } else { 913 goto passthough; 914 } 915 break; 916 917 case PMBUS_READ_VOUT: /* Read-Only word */ 918 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 919 pmbus_send16(pmdev, pmdev->pages[index].read_vout); 920 } else { 921 goto passthough; 922 } 923 break; 924 925 case PMBUS_READ_IOUT: /* Read-Only word */ 926 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 927 pmbus_send16(pmdev, pmdev->pages[index].read_iout); 928 } else { 929 goto passthough; 930 } 931 break; 932 933 case PMBUS_READ_TEMPERATURE_1: /* Read-Only word */ 934 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 935 pmbus_send16(pmdev, pmdev->pages[index].read_temperature_1); 936 } else { 937 goto passthough; 938 } 939 break; 940 941 case PMBUS_READ_TEMPERATURE_2: /* Read-Only word */ 942 if (pmdev->pages[index].page_flags & PB_HAS_TEMP2) { 943 pmbus_send16(pmdev, pmdev->pages[index].read_temperature_2); 944 } else { 945 goto passthough; 946 } 947 break; 948 949 case PMBUS_READ_TEMPERATURE_3: /* Read-Only word */ 950 if (pmdev->pages[index].page_flags & PB_HAS_TEMP3) { 951 pmbus_send16(pmdev, pmdev->pages[index].read_temperature_3); 952 } else { 953 goto passthough; 954 } 955 break; 956 957 case PMBUS_READ_FAN_SPEED_1: /* Read-Only word */ 958 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 959 pmbus_send16(pmdev, pmdev->pages[index].read_fan_speed_1); 960 } else { 961 goto passthough; 962 } 963 break; 964 965 case PMBUS_READ_FAN_SPEED_2: /* Read-Only word */ 966 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 967 pmbus_send16(pmdev, pmdev->pages[index].read_fan_speed_2); 968 } else { 969 goto passthough; 970 } 971 break; 972 973 case PMBUS_READ_FAN_SPEED_3: /* Read-Only word */ 974 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 975 pmbus_send16(pmdev, pmdev->pages[index].read_fan_speed_3); 976 } else { 977 goto passthough; 978 } 979 break; 980 981 case PMBUS_READ_FAN_SPEED_4: /* Read-Only word */ 982 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 983 pmbus_send16(pmdev, pmdev->pages[index].read_fan_speed_4); 984 } else { 985 goto passthough; 986 } 987 break; 988 989 case PMBUS_READ_DUTY_CYCLE: /* Read-Only word */ 990 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 991 pmbus_send16(pmdev, pmdev->pages[index].read_duty_cycle); 992 } else { 993 goto passthough; 994 } 995 break; 996 997 case PMBUS_READ_FREQUENCY: /* Read-Only word */ 998 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 999 pmbus_send16(pmdev, pmdev->pages[index].read_frequency); 1000 } else { 1001 goto passthough; 1002 } 1003 break; 1004 1005 case PMBUS_READ_POUT: /* Read-Only word */ 1006 if (pmdev->pages[index].page_flags & PB_HAS_POUT) { 1007 pmbus_send16(pmdev, pmdev->pages[index].read_pout); 1008 } else { 1009 goto passthough; 1010 } 1011 break; 1012 1013 case PMBUS_READ_PIN: /* Read-Only word */ 1014 if (pmdev->pages[index].page_flags & PB_HAS_PIN) { 1015 pmbus_send16(pmdev, pmdev->pages[index].read_pin); 1016 } else { 1017 goto passthough; 1018 } 1019 break; 1020 1021 case PMBUS_REVISION: /* Read-Only byte */ 1022 pmbus_send8(pmdev, pmdev->pages[index].revision); 1023 break; 1024 1025 case PMBUS_MFR_ID: /* R/W block */ 1026 if (pmdev->pages[index].page_flags & PB_HAS_MFR_INFO) { 1027 pmbus_send_string(pmdev, pmdev->pages[index].mfr_id); 1028 } else { 1029 goto passthough; 1030 } 1031 break; 1032 1033 case PMBUS_MFR_MODEL: /* R/W block */ 1034 if (pmdev->pages[index].page_flags & PB_HAS_MFR_INFO) { 1035 pmbus_send_string(pmdev, pmdev->pages[index].mfr_model); 1036 } else { 1037 goto passthough; 1038 } 1039 break; 1040 1041 case PMBUS_MFR_REVISION: /* R/W block */ 1042 if (pmdev->pages[index].page_flags & PB_HAS_MFR_INFO) { 1043 pmbus_send_string(pmdev, pmdev->pages[index].mfr_revision); 1044 } else { 1045 goto passthough; 1046 } 1047 break; 1048 1049 case PMBUS_MFR_LOCATION: /* R/W block */ 1050 if (pmdev->pages[index].page_flags & PB_HAS_MFR_INFO) { 1051 pmbus_send_string(pmdev, pmdev->pages[index].mfr_location); 1052 } else { 1053 goto passthough; 1054 } 1055 break; 1056 1057 case PMBUS_MFR_VIN_MIN: /* Read-Only word */ 1058 if (pmdev->pages[index].page_flags & PB_HAS_VIN_RATING) { 1059 pmbus_send16(pmdev, pmdev->pages[index].mfr_vin_min); 1060 } else { 1061 goto passthough; 1062 } 1063 break; 1064 1065 case PMBUS_MFR_VIN_MAX: /* Read-Only word */ 1066 if (pmdev->pages[index].page_flags & PB_HAS_VIN_RATING) { 1067 pmbus_send16(pmdev, pmdev->pages[index].mfr_vin_max); 1068 } else { 1069 goto passthough; 1070 } 1071 break; 1072 1073 case PMBUS_MFR_IIN_MAX: /* Read-Only word */ 1074 if (pmdev->pages[index].page_flags & PB_HAS_IIN_RATING) { 1075 pmbus_send16(pmdev, pmdev->pages[index].mfr_iin_max); 1076 } else { 1077 goto passthough; 1078 } 1079 break; 1080 1081 case PMBUS_MFR_PIN_MAX: /* Read-Only word */ 1082 if (pmdev->pages[index].page_flags & PB_HAS_PIN_RATING) { 1083 pmbus_send16(pmdev, pmdev->pages[index].mfr_pin_max); 1084 } else { 1085 goto passthough; 1086 } 1087 break; 1088 1089 case PMBUS_MFR_VOUT_MIN: /* Read-Only word */ 1090 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) { 1091 pmbus_send16(pmdev, pmdev->pages[index].mfr_vout_min); 1092 } else { 1093 goto passthough; 1094 } 1095 break; 1096 1097 case PMBUS_MFR_VOUT_MAX: /* Read-Only word */ 1098 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) { 1099 pmbus_send16(pmdev, pmdev->pages[index].mfr_vout_max); 1100 } else { 1101 goto passthough; 1102 } 1103 break; 1104 1105 case PMBUS_MFR_IOUT_MAX: /* Read-Only word */ 1106 if (pmdev->pages[index].page_flags & PB_HAS_IOUT_RATING) { 1107 pmbus_send16(pmdev, pmdev->pages[index].mfr_iout_max); 1108 } else { 1109 goto passthough; 1110 } 1111 break; 1112 1113 case PMBUS_MFR_POUT_MAX: /* Read-Only word */ 1114 if (pmdev->pages[index].page_flags & PB_HAS_POUT_RATING) { 1115 pmbus_send16(pmdev, pmdev->pages[index].mfr_pout_max); 1116 } else { 1117 goto passthough; 1118 } 1119 break; 1120 1121 case PMBUS_MFR_MAX_TEMP_1: /* R/W word */ 1122 if (pmdev->pages[index].page_flags & PB_HAS_TEMP_RATING) { 1123 pmbus_send16(pmdev, pmdev->pages[index].mfr_max_temp_1); 1124 } else { 1125 goto passthough; 1126 } 1127 break; 1128 1129 case PMBUS_MFR_MAX_TEMP_2: /* R/W word */ 1130 if (pmdev->pages[index].page_flags & PB_HAS_TEMP_RATING) { 1131 pmbus_send16(pmdev, pmdev->pages[index].mfr_max_temp_2); 1132 } else { 1133 goto passthough; 1134 } 1135 break; 1136 1137 case PMBUS_MFR_MAX_TEMP_3: /* R/W word */ 1138 if (pmdev->pages[index].page_flags & PB_HAS_TEMP_RATING) { 1139 pmbus_send16(pmdev, pmdev->pages[index].mfr_max_temp_3); 1140 } else { 1141 goto passthough; 1142 } 1143 break; 1144 1145 case PMBUS_IDLE_STATE: 1146 pmbus_send8(pmdev, PMBUS_ERR_BYTE); 1147 break; 1148 1149 case PMBUS_CLEAR_FAULTS: /* Send Byte */ 1150 case PMBUS_PAGE_PLUS_WRITE: /* Block Write-only */ 1151 case PMBUS_STORE_DEFAULT_ALL: /* Send Byte */ 1152 case PMBUS_RESTORE_DEFAULT_ALL: /* Send Byte */ 1153 case PMBUS_STORE_DEFAULT_CODE: /* Write-only Byte */ 1154 case PMBUS_RESTORE_DEFAULT_CODE: /* Write-only Byte */ 1155 case PMBUS_STORE_USER_ALL: /* Send Byte */ 1156 case PMBUS_RESTORE_USER_ALL: /* Send Byte */ 1157 case PMBUS_STORE_USER_CODE: /* Write-only Byte */ 1158 case PMBUS_RESTORE_USER_CODE: /* Write-only Byte */ 1159 case PMBUS_QUERY: /* Write-Only */ 1160 qemu_log_mask(LOG_GUEST_ERROR, 1161 "%s: reading from write only register 0x%02x\n", 1162 __func__, pmdev->code); 1163 break; 1164 1165 passthough: 1166 default: 1167 /* Pass through read request if not handled */ 1168 if (pmdc->receive_byte) { 1169 ret = pmdc->receive_byte(pmdev); 1170 } 1171 break; 1172 } 1173 1174 if (pmdev->out_buf_len != 0) { 1175 ret = pmbus_out_buf_pop(pmdev); 1176 return ret; 1177 } 1178 1179 return ret; 1180 } 1181 1182 /* 1183 * PMBus clear faults command applies to all status registers, existing faults 1184 * should separately get re-asserted. 1185 */ 1186 static void pmbus_clear_faults(PMBusDevice *pmdev) 1187 { 1188 for (uint8_t i = 0; i < pmdev->num_pages; i++) { 1189 pmdev->pages[i].status_word = 0; 1190 pmdev->pages[i].status_vout = 0; 1191 pmdev->pages[i].status_iout = 0; 1192 pmdev->pages[i].status_input = 0; 1193 pmdev->pages[i].status_temperature = 0; 1194 pmdev->pages[i].status_cml = 0; 1195 pmdev->pages[i].status_other = 0; 1196 pmdev->pages[i].status_mfr_specific = 0; 1197 pmdev->pages[i].status_fans_1_2 = 0; 1198 pmdev->pages[i].status_fans_3_4 = 0; 1199 } 1200 1201 } 1202 1203 /* 1204 * PMBus operation is used to turn On and Off PSUs 1205 * Therefore, default value for the Operation should be PB_OP_ON or 0x80 1206 */ 1207 static void pmbus_operation(PMBusDevice *pmdev) 1208 { 1209 uint8_t index = pmdev->page; 1210 if ((pmdev->pages[index].operation & PB_OP_ON) == 0) { 1211 pmdev->pages[index].read_vout = 0; 1212 pmdev->pages[index].read_iout = 0; 1213 pmdev->pages[index].read_pout = 0; 1214 return; 1215 } 1216 1217 if (pmdev->pages[index].operation & (PB_OP_ON | PB_OP_MARGIN_HIGH)) { 1218 pmdev->pages[index].read_vout = pmdev->pages[index].vout_margin_high; 1219 } 1220 1221 if (pmdev->pages[index].operation & (PB_OP_ON | PB_OP_MARGIN_LOW)) { 1222 pmdev->pages[index].read_vout = pmdev->pages[index].vout_margin_low; 1223 } 1224 pmbus_check_limits(pmdev); 1225 } 1226 1227 static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len) 1228 { 1229 PMBusDevice *pmdev = PMBUS_DEVICE(smd); 1230 PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev); 1231 int ret = 0; 1232 uint8_t index; 1233 1234 if (len == 0) { 1235 qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__); 1236 return PMBUS_ERR_BYTE; 1237 } 1238 1239 if (!pmdev->pages) { /* allocate memory for pages on first use */ 1240 pmbus_pages_alloc(pmdev); 1241 } 1242 1243 pmdev->in_buf_len = len; 1244 pmdev->in_buf = buf; 1245 1246 pmdev->code = buf[0]; /* PMBus command code */ 1247 if (len == 1) { /* Single length writes are command codes only */ 1248 return 0; 1249 } 1250 1251 if (pmdev->code == PMBUS_PAGE) { 1252 pmdev->page = pmbus_receive8(pmdev); 1253 return 0; 1254 } 1255 1256 /* loop through all the pages when 0xFF is received */ 1257 if (pmdev->page == PB_ALL_PAGES) { 1258 for (int i = 0; i < pmdev->num_pages; i++) { 1259 pmdev->page = i; 1260 pmbus_write_data(smd, buf, len); 1261 } 1262 pmdev->page = PB_ALL_PAGES; 1263 return 0; 1264 } 1265 1266 if (pmdev->page > pmdev->num_pages - 1) { 1267 qemu_log_mask(LOG_GUEST_ERROR, 1268 "%s: page %u is out of range\n", 1269 __func__, pmdev->page); 1270 pmdev->page = 0; /* undefined behaviour - reset to page 0 */ 1271 pmbus_cml_error(pmdev); 1272 return PMBUS_ERR_BYTE; 1273 } 1274 1275 index = pmdev->page; 1276 1277 switch (pmdev->code) { 1278 case PMBUS_OPERATION: /* R/W byte */ 1279 pmdev->pages[index].operation = pmbus_receive8(pmdev); 1280 pmbus_operation(pmdev); 1281 break; 1282 1283 case PMBUS_ON_OFF_CONFIG: /* R/W byte */ 1284 pmdev->pages[index].on_off_config = pmbus_receive8(pmdev); 1285 break; 1286 1287 case PMBUS_CLEAR_FAULTS: /* Send Byte */ 1288 pmbus_clear_faults(pmdev); 1289 break; 1290 1291 case PMBUS_PHASE: /* R/W byte */ 1292 pmdev->pages[index].phase = pmbus_receive8(pmdev); 1293 break; 1294 1295 case PMBUS_PAGE_PLUS_WRITE: /* Block Write-only */ 1296 case PMBUS_WRITE_PROTECT: /* R/W byte */ 1297 pmdev->pages[index].write_protect = pmbus_receive8(pmdev); 1298 break; 1299 1300 case PMBUS_VOUT_MODE: /* R/W byte */ 1301 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MODE) { 1302 pmdev->pages[index].vout_mode = pmbus_receive8(pmdev); 1303 } else { 1304 goto passthrough; 1305 } 1306 break; 1307 1308 case PMBUS_VOUT_COMMAND: /* R/W word */ 1309 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1310 pmdev->pages[index].vout_command = pmbus_receive16(pmdev); 1311 } else { 1312 goto passthrough; 1313 } 1314 break; 1315 1316 case PMBUS_VOUT_TRIM: /* R/W word */ 1317 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1318 pmdev->pages[index].vout_trim = pmbus_receive16(pmdev); 1319 } else { 1320 goto passthrough; 1321 } 1322 break; 1323 1324 case PMBUS_VOUT_CAL_OFFSET: /* R/W word */ 1325 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1326 pmdev->pages[index].vout_cal_offset = pmbus_receive16(pmdev); 1327 } else { 1328 goto passthrough; 1329 } 1330 break; 1331 1332 case PMBUS_VOUT_MAX: /* R/W word */ 1333 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1334 pmdev->pages[index].vout_max = pmbus_receive16(pmdev); 1335 } else { 1336 goto passthrough; 1337 } 1338 break; 1339 1340 case PMBUS_VOUT_MARGIN_HIGH: /* R/W word */ 1341 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) { 1342 pmdev->pages[index].vout_margin_high = pmbus_receive16(pmdev); 1343 } else { 1344 goto passthrough; 1345 } 1346 break; 1347 1348 case PMBUS_VOUT_MARGIN_LOW: /* R/W word */ 1349 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) { 1350 pmdev->pages[index].vout_margin_low = pmbus_receive16(pmdev); 1351 } else { 1352 goto passthrough; 1353 } 1354 break; 1355 1356 case PMBUS_VOUT_TRANSITION_RATE: /* R/W word */ 1357 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1358 pmdev->pages[index].vout_transition_rate = pmbus_receive16(pmdev); 1359 } else { 1360 goto passthrough; 1361 } 1362 break; 1363 1364 case PMBUS_VOUT_DROOP: /* R/W word */ 1365 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1366 pmdev->pages[index].vout_droop = pmbus_receive16(pmdev); 1367 } else { 1368 goto passthrough; 1369 } 1370 break; 1371 1372 case PMBUS_VOUT_SCALE_LOOP: /* R/W word */ 1373 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1374 pmdev->pages[index].vout_scale_loop = pmbus_receive16(pmdev); 1375 } else { 1376 goto passthrough; 1377 } 1378 break; 1379 1380 case PMBUS_VOUT_SCALE_MONITOR: /* R/W word */ 1381 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1382 pmdev->pages[index].vout_scale_monitor = pmbus_receive16(pmdev); 1383 } else { 1384 goto passthrough; 1385 } 1386 break; 1387 1388 case PMBUS_VOUT_MIN: /* R/W word */ 1389 if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) { 1390 pmdev->pages[index].vout_min = pmbus_receive16(pmdev); 1391 } else { 1392 goto passthrough; 1393 } 1394 break; 1395 1396 case PMBUS_POUT_MAX: /* R/W word */ 1397 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1398 pmdev->pages[index].pout_max = pmbus_receive16(pmdev); 1399 } else { 1400 goto passthrough; 1401 } 1402 break; 1403 1404 case PMBUS_VIN_ON: /* R/W word */ 1405 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 1406 pmdev->pages[index].vin_on = pmbus_receive16(pmdev); 1407 } else { 1408 goto passthrough; 1409 } 1410 break; 1411 1412 case PMBUS_VIN_OFF: /* R/W word */ 1413 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 1414 pmdev->pages[index].vin_off = pmbus_receive16(pmdev); 1415 } else { 1416 goto passthrough; 1417 } 1418 break; 1419 1420 case PMBUS_IOUT_CAL_GAIN: /* R/W word */ 1421 if (pmdev->pages[index].page_flags & PB_HAS_IOUT_GAIN) { 1422 pmdev->pages[index].iout_cal_gain = pmbus_receive16(pmdev); 1423 } else { 1424 goto passthrough; 1425 } 1426 break; 1427 1428 case PMBUS_FAN_CONFIG_1_2: /* R/W byte */ 1429 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 1430 pmdev->pages[index].fan_config_1_2 = pmbus_receive8(pmdev); 1431 } else { 1432 goto passthrough; 1433 } 1434 break; 1435 1436 case PMBUS_FAN_COMMAND_1: /* R/W word */ 1437 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 1438 pmdev->pages[index].fan_command_1 = pmbus_receive16(pmdev); 1439 } else { 1440 goto passthrough; 1441 } 1442 break; 1443 1444 case PMBUS_FAN_COMMAND_2: /* R/W word */ 1445 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 1446 pmdev->pages[index].fan_command_2 = pmbus_receive16(pmdev); 1447 } else { 1448 goto passthrough; 1449 } 1450 break; 1451 1452 case PMBUS_FAN_CONFIG_3_4: /* R/W byte */ 1453 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 1454 pmdev->pages[index].fan_config_3_4 = pmbus_receive8(pmdev); 1455 } else { 1456 goto passthrough; 1457 } 1458 break; 1459 1460 case PMBUS_FAN_COMMAND_3: /* R/W word */ 1461 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 1462 pmdev->pages[index].fan_command_3 = pmbus_receive16(pmdev); 1463 } else { 1464 goto passthrough; 1465 } 1466 break; 1467 1468 case PMBUS_FAN_COMMAND_4: /* R/W word */ 1469 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 1470 pmdev->pages[index].fan_command_4 = pmbus_receive16(pmdev); 1471 } else { 1472 goto passthrough; 1473 } 1474 break; 1475 1476 case PMBUS_VOUT_OV_FAULT_LIMIT: /* R/W word */ 1477 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1478 pmdev->pages[index].vout_ov_fault_limit = pmbus_receive16(pmdev); 1479 } else { 1480 goto passthrough; 1481 } 1482 break; 1483 1484 case PMBUS_VOUT_OV_FAULT_RESPONSE: /* R/W byte */ 1485 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1486 pmdev->pages[index].vout_ov_fault_response = pmbus_receive8(pmdev); 1487 } else { 1488 goto passthrough; 1489 } 1490 break; 1491 1492 case PMBUS_VOUT_OV_WARN_LIMIT: /* R/W word */ 1493 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1494 pmdev->pages[index].vout_ov_warn_limit = pmbus_receive16(pmdev); 1495 } else { 1496 goto passthrough; 1497 } 1498 break; 1499 1500 case PMBUS_VOUT_UV_WARN_LIMIT: /* R/W word */ 1501 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1502 pmdev->pages[index].vout_uv_warn_limit = pmbus_receive16(pmdev); 1503 } else { 1504 goto passthrough; 1505 } 1506 break; 1507 1508 case PMBUS_VOUT_UV_FAULT_LIMIT: /* R/W word */ 1509 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1510 pmdev->pages[index].vout_uv_fault_limit = pmbus_receive16(pmdev); 1511 } else { 1512 goto passthrough; 1513 } 1514 break; 1515 1516 case PMBUS_VOUT_UV_FAULT_RESPONSE: /* R/W byte */ 1517 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1518 pmdev->pages[index].vout_uv_fault_response = pmbus_receive8(pmdev); 1519 } else { 1520 goto passthrough; 1521 } 1522 break; 1523 1524 case PMBUS_IOUT_OC_FAULT_LIMIT: /* R/W word */ 1525 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 1526 pmdev->pages[index].iout_oc_fault_limit = pmbus_receive16(pmdev); 1527 } else { 1528 goto passthrough; 1529 } 1530 break; 1531 1532 case PMBUS_IOUT_OC_FAULT_RESPONSE: /* R/W byte */ 1533 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 1534 pmdev->pages[index].iout_oc_fault_response = pmbus_receive8(pmdev); 1535 } else { 1536 goto passthrough; 1537 } 1538 break; 1539 1540 case PMBUS_IOUT_OC_LV_FAULT_LIMIT: /* R/W word */ 1541 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 1542 pmdev->pages[index].iout_oc_lv_fault_limit = pmbus_receive16(pmdev); 1543 } else { 1544 goto passthrough; 1545 } 1546 break; 1547 1548 case PMBUS_IOUT_OC_LV_FAULT_RESPONSE: /* R/W byte */ 1549 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 1550 pmdev->pages[index].iout_oc_lv_fault_response 1551 = pmbus_receive8(pmdev); 1552 } else { 1553 goto passthrough; 1554 } 1555 break; 1556 1557 case PMBUS_IOUT_OC_WARN_LIMIT: /* R/W word */ 1558 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 1559 pmdev->pages[index].iout_oc_warn_limit = pmbus_receive16(pmdev); 1560 } else { 1561 goto passthrough; 1562 } 1563 break; 1564 1565 case PMBUS_IOUT_UC_FAULT_LIMIT: /* R/W word */ 1566 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 1567 pmdev->pages[index].iout_uc_fault_limit = pmbus_receive16(pmdev); 1568 } else { 1569 goto passthrough; 1570 } 1571 break; 1572 1573 case PMBUS_IOUT_UC_FAULT_RESPONSE: /* R/W byte */ 1574 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 1575 pmdev->pages[index].iout_uc_fault_response = pmbus_receive8(pmdev); 1576 } else { 1577 goto passthrough; 1578 } 1579 break; 1580 1581 case PMBUS_OT_FAULT_LIMIT: /* R/W word */ 1582 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 1583 pmdev->pages[index].ot_fault_limit = pmbus_receive16(pmdev); 1584 } else { 1585 goto passthrough; 1586 } 1587 break; 1588 1589 case PMBUS_OT_FAULT_RESPONSE: /* R/W byte */ 1590 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 1591 pmdev->pages[index].ot_fault_response = pmbus_receive8(pmdev); 1592 } else { 1593 goto passthrough; 1594 } 1595 break; 1596 1597 case PMBUS_OT_WARN_LIMIT: /* R/W word */ 1598 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 1599 pmdev->pages[index].ot_warn_limit = pmbus_receive16(pmdev); 1600 } else { 1601 goto passthrough; 1602 } 1603 break; 1604 1605 case PMBUS_UT_WARN_LIMIT: /* R/W word */ 1606 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 1607 pmdev->pages[index].ut_warn_limit = pmbus_receive16(pmdev); 1608 } else { 1609 goto passthrough; 1610 } 1611 break; 1612 1613 case PMBUS_UT_FAULT_LIMIT: /* R/W word */ 1614 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 1615 pmdev->pages[index].ut_fault_limit = pmbus_receive16(pmdev); 1616 } else { 1617 goto passthrough; 1618 } 1619 break; 1620 1621 case PMBUS_UT_FAULT_RESPONSE: /* R/W byte */ 1622 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 1623 pmdev->pages[index].ut_fault_response = pmbus_receive8(pmdev); 1624 } else { 1625 goto passthrough; 1626 } 1627 break; 1628 1629 case PMBUS_VIN_OV_FAULT_LIMIT: /* R/W word */ 1630 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 1631 pmdev->pages[index].vin_ov_fault_limit = pmbus_receive16(pmdev); 1632 } else { 1633 goto passthrough; 1634 } 1635 break; 1636 1637 case PMBUS_VIN_OV_FAULT_RESPONSE: /* R/W byte */ 1638 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 1639 pmdev->pages[index].vin_ov_fault_response = pmbus_receive8(pmdev); 1640 } else { 1641 goto passthrough; 1642 } 1643 break; 1644 1645 case PMBUS_VIN_OV_WARN_LIMIT: /* R/W word */ 1646 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 1647 pmdev->pages[index].vin_ov_warn_limit = pmbus_receive16(pmdev); 1648 } else { 1649 goto passthrough; 1650 } 1651 break; 1652 1653 case PMBUS_VIN_UV_WARN_LIMIT: /* R/W word */ 1654 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 1655 pmdev->pages[index].vin_uv_warn_limit = pmbus_receive16(pmdev); 1656 } else { 1657 goto passthrough; 1658 } 1659 break; 1660 1661 case PMBUS_VIN_UV_FAULT_LIMIT: /* R/W word */ 1662 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 1663 pmdev->pages[index].vin_uv_fault_limit = pmbus_receive16(pmdev); 1664 } else { 1665 goto passthrough; 1666 } 1667 break; 1668 1669 case PMBUS_VIN_UV_FAULT_RESPONSE: /* R/W byte */ 1670 if (pmdev->pages[index].page_flags & PB_HAS_VIN) { 1671 pmdev->pages[index].vin_uv_fault_response = pmbus_receive8(pmdev); 1672 } else { 1673 goto passthrough; 1674 } 1675 break; 1676 1677 case PMBUS_IIN_OC_FAULT_LIMIT: /* R/W word */ 1678 if (pmdev->pages[index].page_flags & PB_HAS_IIN) { 1679 pmdev->pages[index].iin_oc_fault_limit = pmbus_receive16(pmdev); 1680 } else { 1681 goto passthrough; 1682 } 1683 break; 1684 1685 case PMBUS_IIN_OC_FAULT_RESPONSE: /* R/W byte */ 1686 if (pmdev->pages[index].page_flags & PB_HAS_IIN) { 1687 pmdev->pages[index].iin_oc_fault_response = pmbus_receive8(pmdev); 1688 } else { 1689 goto passthrough; 1690 } 1691 break; 1692 1693 case PMBUS_IIN_OC_WARN_LIMIT: /* R/W word */ 1694 if (pmdev->pages[index].page_flags & PB_HAS_IIN) { 1695 pmdev->pages[index].iin_oc_warn_limit = pmbus_receive16(pmdev); 1696 } else { 1697 goto passthrough; 1698 } 1699 break; 1700 1701 case PMBUS_POUT_OP_FAULT_LIMIT: /* R/W word */ 1702 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1703 pmdev->pages[index].pout_op_fault_limit = pmbus_receive16(pmdev); 1704 } else { 1705 goto passthrough; 1706 } 1707 break; 1708 1709 case PMBUS_POUT_OP_FAULT_RESPONSE: /* R/W byte */ 1710 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1711 pmdev->pages[index].pout_op_fault_response = pmbus_receive8(pmdev); 1712 } else { 1713 goto passthrough; 1714 } 1715 break; 1716 1717 case PMBUS_POUT_OP_WARN_LIMIT: /* R/W word */ 1718 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1719 pmdev->pages[index].pout_op_warn_limit = pmbus_receive16(pmdev); 1720 } else { 1721 goto passthrough; 1722 } 1723 break; 1724 1725 case PMBUS_PIN_OP_WARN_LIMIT: /* R/W word */ 1726 if (pmdev->pages[index].page_flags & PB_HAS_PIN) { 1727 pmdev->pages[index].pin_op_warn_limit = pmbus_receive16(pmdev); 1728 } else { 1729 goto passthrough; 1730 } 1731 break; 1732 1733 case PMBUS_STATUS_BYTE: /* R/W byte */ 1734 pmdev->pages[index].status_word = pmbus_receive8(pmdev); 1735 break; 1736 1737 case PMBUS_STATUS_WORD: /* R/W word */ 1738 pmdev->pages[index].status_word = pmbus_receive16(pmdev); 1739 break; 1740 1741 case PMBUS_STATUS_VOUT: /* R/W byte */ 1742 if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { 1743 pmdev->pages[index].status_vout = pmbus_receive8(pmdev); 1744 } else { 1745 goto passthrough; 1746 } 1747 break; 1748 1749 case PMBUS_STATUS_IOUT: /* R/W byte */ 1750 if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { 1751 pmdev->pages[index].status_iout = pmbus_receive8(pmdev); 1752 } else { 1753 goto passthrough; 1754 } 1755 break; 1756 1757 case PMBUS_STATUS_INPUT: /* R/W byte */ 1758 pmdev->pages[index].status_input = pmbus_receive8(pmdev); 1759 break; 1760 1761 case PMBUS_STATUS_TEMPERATURE: /* R/W byte */ 1762 if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { 1763 pmdev->pages[index].status_temperature = pmbus_receive8(pmdev); 1764 } else { 1765 goto passthrough; 1766 } 1767 break; 1768 1769 case PMBUS_STATUS_CML: /* R/W byte */ 1770 pmdev->pages[index].status_cml = pmbus_receive8(pmdev); 1771 break; 1772 1773 case PMBUS_STATUS_OTHER: /* R/W byte */ 1774 pmdev->pages[index].status_other = pmbus_receive8(pmdev); 1775 break; 1776 1777 case PMBUS_STATUS_MFR_SPECIFIC: /* R/W byte */ 1778 pmdev->pages[index].status_mfr_specific = pmbus_receive8(pmdev); 1779 break; 1780 1781 case PMBUS_STATUS_FANS_1_2: /* R/W byte */ 1782 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 1783 pmbus_send8(pmdev, pmdev->pages[index].status_fans_1_2); 1784 } else { 1785 goto passthrough; 1786 } 1787 break; 1788 1789 case PMBUS_STATUS_FANS_3_4: /* R/W byte */ 1790 if (pmdev->pages[index].page_flags & PB_HAS_FAN) { 1791 pmbus_send8(pmdev, pmdev->pages[index].status_fans_3_4); 1792 } else { 1793 goto passthrough; 1794 } 1795 break; 1796 1797 case PMBUS_PAGE_PLUS_READ: /* Block Read-only */ 1798 case PMBUS_CAPABILITY: /* Read-Only byte */ 1799 case PMBUS_COEFFICIENTS: /* Read-only block 5 bytes */ 1800 case PMBUS_READ_EIN: /* Read-Only block 5 bytes */ 1801 case PMBUS_READ_EOUT: /* Read-Only block 5 bytes */ 1802 case PMBUS_READ_VIN: /* Read-Only word */ 1803 case PMBUS_READ_IIN: /* Read-Only word */ 1804 case PMBUS_READ_VCAP: /* Read-Only word */ 1805 case PMBUS_READ_VOUT: /* Read-Only word */ 1806 case PMBUS_READ_IOUT: /* Read-Only word */ 1807 case PMBUS_READ_TEMPERATURE_1: /* Read-Only word */ 1808 case PMBUS_READ_TEMPERATURE_2: /* Read-Only word */ 1809 case PMBUS_READ_TEMPERATURE_3: /* Read-Only word */ 1810 case PMBUS_READ_FAN_SPEED_1: /* Read-Only word */ 1811 case PMBUS_READ_FAN_SPEED_2: /* Read-Only word */ 1812 case PMBUS_READ_FAN_SPEED_3: /* Read-Only word */ 1813 case PMBUS_READ_FAN_SPEED_4: /* Read-Only word */ 1814 case PMBUS_READ_DUTY_CYCLE: /* Read-Only word */ 1815 case PMBUS_READ_FREQUENCY: /* Read-Only word */ 1816 case PMBUS_READ_POUT: /* Read-Only word */ 1817 case PMBUS_READ_PIN: /* Read-Only word */ 1818 case PMBUS_REVISION: /* Read-Only byte */ 1819 case PMBUS_APP_PROFILE_SUPPORT: /* Read-Only block-read */ 1820 case PMBUS_MFR_VIN_MIN: /* Read-Only word */ 1821 case PMBUS_MFR_VIN_MAX: /* Read-Only word */ 1822 case PMBUS_MFR_IIN_MAX: /* Read-Only word */ 1823 case PMBUS_MFR_PIN_MAX: /* Read-Only word */ 1824 case PMBUS_MFR_VOUT_MIN: /* Read-Only word */ 1825 case PMBUS_MFR_VOUT_MAX: /* Read-Only word */ 1826 case PMBUS_MFR_IOUT_MAX: /* Read-Only word */ 1827 case PMBUS_MFR_POUT_MAX: /* Read-Only word */ 1828 case PMBUS_MFR_TAMBIENT_MAX: /* Read-Only word */ 1829 case PMBUS_MFR_TAMBIENT_MIN: /* Read-Only word */ 1830 case PMBUS_MFR_EFFICIENCY_LL: /* Read-Only block 14 bytes */ 1831 case PMBUS_MFR_EFFICIENCY_HL: /* Read-Only block 14 bytes */ 1832 case PMBUS_MFR_PIN_ACCURACY: /* Read-Only byte */ 1833 case PMBUS_IC_DEVICE_ID: /* Read-Only block-read */ 1834 case PMBUS_IC_DEVICE_REV: /* Read-Only block-read */ 1835 qemu_log_mask(LOG_GUEST_ERROR, 1836 "%s: writing to read-only register 0x%02x\n", 1837 __func__, pmdev->code); 1838 break; 1839 1840 passthrough: 1841 /* Unimplemented registers get passed to the device */ 1842 default: 1843 if (pmdc->write_data) { 1844 ret = pmdc->write_data(pmdev, buf, len); 1845 } 1846 break; 1847 } 1848 pmbus_check_limits(pmdev); 1849 pmdev->in_buf_len = 0; 1850 return ret; 1851 } 1852 1853 int pmbus_page_config(PMBusDevice *pmdev, uint8_t index, uint64_t flags) 1854 { 1855 if (!pmdev->pages) { /* allocate memory for pages on first use */ 1856 pmbus_pages_alloc(pmdev); 1857 } 1858 1859 /* The 0xFF page is special for commands applying to all pages */ 1860 if (index == PB_ALL_PAGES) { 1861 for (int i = 0; i < pmdev->num_pages; i++) { 1862 pmdev->pages[i].page_flags = flags; 1863 } 1864 return 0; 1865 } 1866 1867 if (index > pmdev->num_pages - 1) { 1868 qemu_log_mask(LOG_GUEST_ERROR, 1869 "%s: index %u is out of range\n", 1870 __func__, index); 1871 return -1; 1872 } 1873 1874 pmdev->pages[index].page_flags = flags; 1875 1876 return 0; 1877 } 1878 1879 /* TODO: include pmbus page info in vmstate */ 1880 const VMStateDescription vmstate_pmbus_device = { 1881 .name = TYPE_PMBUS_DEVICE, 1882 .version_id = 0, 1883 .minimum_version_id = 0, 1884 .fields = (VMStateField[]) { 1885 VMSTATE_SMBUS_DEVICE(smb, PMBusDevice), 1886 VMSTATE_UINT8(num_pages, PMBusDevice), 1887 VMSTATE_UINT8(code, PMBusDevice), 1888 VMSTATE_UINT8(page, PMBusDevice), 1889 VMSTATE_UINT8(capability, PMBusDevice), 1890 VMSTATE_END_OF_LIST() 1891 } 1892 }; 1893 1894 static void pmbus_device_finalize(Object *obj) 1895 { 1896 PMBusDevice *pmdev = PMBUS_DEVICE(obj); 1897 g_free(pmdev->pages); 1898 } 1899 1900 static void pmbus_device_class_init(ObjectClass *klass, void *data) 1901 { 1902 SMBusDeviceClass *k = SMBUS_DEVICE_CLASS(klass); 1903 1904 k->quick_cmd = pmbus_quick_cmd; 1905 k->write_data = pmbus_write_data; 1906 k->receive_byte = pmbus_receive_byte; 1907 } 1908 1909 static const TypeInfo pmbus_device_type_info = { 1910 .name = TYPE_PMBUS_DEVICE, 1911 .parent = TYPE_SMBUS_DEVICE, 1912 .instance_size = sizeof(PMBusDevice), 1913 .instance_finalize = pmbus_device_finalize, 1914 .abstract = true, 1915 .class_size = sizeof(PMBusDeviceClass), 1916 .class_init = pmbus_device_class_init, 1917 }; 1918 1919 static void pmbus_device_register_types(void) 1920 { 1921 type_register_static(&pmbus_device_type_info); 1922 } 1923 1924 type_init(pmbus_device_register_types) 1925