| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Maxim MAX31785 PMBus 6-Channel Fan Controller |
| 4 | * |
| 5 | * Datasheet: |
| 6 | * https://datasheets.maximintegrated.com/en/ds/MAX31785.pdf |
| 7 | * |
| 8 | * Copyright(c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. |
| 9 | */ |
| 10 | |
| 11 | #include "qemu/osdep.h" |
| 12 | #include "hw/i2c/pmbus_device.h" |
| 13 | #include "hw/core/irq.h" |
| 14 | #include "migration/vmstate.h" |
| 15 | #include "qapi/error.h" |
| 16 | #include "qapi/visitor.h" |
| 17 | #include "qemu/log.h" |
| 18 | #include "qemu/module.h" |
| 19 | |
| 20 | #define TYPE_MAX31785 "max31785" |
| 21 | #define MAX31785(obj) OBJECT_CHECK(MAX31785State, (obj), TYPE_MAX31785) |
| 22 | |
| 23 | /* MAX31785 mfr specific PMBus commands */ |
| 24 | #define MAX31785_MFR_MODE 0xD1 |
| 25 | #define MAX31785_MFR_PSEN_CONFIG 0xD2 |
| 26 | #define MAX31785_MFR_VOUT_PEAK 0xD4 |
| 27 | #define MAX31785_MFR_TEMPERATURE_PEAK 0xD6 |
| 28 | #define MAX31785_MFR_VOUT_MIN 0xD7 |
| 29 | #define MAX31785_MFR_FAULT_RESPONSE 0xD9 |
| 30 | #define MAX31785_MFR_NV_FAULT_LOG 0xDC |
| 31 | #define MAX31785_MFR_TIME_COUNT 0xDD |
| 32 | #define MAX31785_MFR_TEMP_SENSOR_CONFIG 0xF0 |
| 33 | #define MAX31785_MFR_FAN_CONFIG 0xF1 |
| 34 | #define MAX31785_MFR_FAN_LUT 0xF2 |
| 35 | #define MAX31785_MFR_READ_FAN_PWM 0xF3 |
| 36 | #define MAX31785_MFR_FAN_FAULT_LIMIT 0xF5 |
| 37 | #define MAX31785_MFR_FAN_WARN_LIMIT 0xF6 |
| 38 | #define MAX31785_MFR_FAN_RUN_TIME 0xF7 |
| 39 | #define MAX31785_MFR_FAN_PWM_AVG 0xF8 |
| 40 | #define MAX31785_MFR_FAN_PWM2RPM 0xF9 |
| 41 | |
| 42 | /* defaults as per the data sheet */ |
| 43 | #define MAX31785_DEFAULT_CAPABILITY 0x10 |
| 44 | #define MAX31785_DEFAULT_VOUT_MODE 0x40 |
| 45 | #define MAX31785_DEFAULT_VOUT_SCALE_MONITOR 0x7FFF |
| 46 | #define MAX31785_DEFAULT_FAN_COMMAND_1 0x7FFF |
| 47 | #define MAX31785_DEFAULT_OV_FAULT_LIMIT 0x7FFF |
| 48 | #define MAX31785_DEFAULT_OV_WARN_LIMIT 0x7FFF |
| 49 | #define MAX31785_DEFAULT_OT_FAULT_LIMIT 0x7FFF |
| 50 | #define MAX31785_DEFAULT_OT_WARN_LIMIT 0x7FFF |
| 51 | #define MAX31785_DEFAULT_PMBUS_REVISION 0x11 |
| 52 | #define MAX31785_DEFAULT_MFR_ID 0x4D |
| 53 | #define MAX31785_DEFAULT_MFR_MODEL 0x53 |
| 54 | #define MAX31785_DEFAULT_MFR_REVISION 0x3030 |
| 55 | #define MAX31785A_DEFAULT_MFR_REVISION 0x3040 |
| 56 | #define MAX31785B_DEFAULT_MFR_REVISION 0x3061 |
| 57 | #define MAX31785B_DEFAULT_MFR_TEMPERATURE_PEAK 0x8000 |
| 58 | #define MAX31785B_DEFAULT_MFR_VOUT_MIN 0x7FFF |
| 59 | #define MAX31785_DEFAULT_TEXT 0x3130313031303130 |
| 60 | |
| 61 | /* MAX31785 pages */ |
| 62 | #define MAX31785_TOTAL_NUM_PAGES 23 |
| 63 | #define MAX31785_FAN_PAGES 6 |
| 64 | #define MAX31785_MIN_FAN_PAGE 0 |
| 65 | #define MAX31785_MAX_FAN_PAGE 5 |
| 66 | #define MAX31785_MIN_TEMP_PAGE 6 |
| 67 | #define MAX31785_MAX_TEMP_PAGE 16 |
| 68 | #define MAX31785_MIN_ADC_VOLTAGE_PAGE 17 |
| 69 | #define MAX31785_MAX_ADC_VOLTAGE_PAGE 22 |
| 70 | |
| 71 | /* FAN_CONFIG_1_2 */ |
| 72 | #define MAX31785_MFR_FAN_CONFIG 0xF1 |
| 73 | #define MAX31785_FAN_CONFIG_ENABLE BIT(7) |
| 74 | #define MAX31785_FAN_CONFIG_RPM_PWM BIT(6) |
| 75 | #define MAX31785_FAN_CONFIG_PULSE(pulse) (pulse << 4) |
| 76 | #define MAX31785_DEFAULT_FAN_CONFIG_1_2(pulse) \ |
| 77 | (MAX31785_FAN_CONFIG_ENABLE | MAX31785_FAN_CONFIG_PULSE(pulse)) |
| 78 | #define MAX31785_DEFAULT_MFR_FAN_CONFIG 0x0000 |
| 79 | |
| 80 | /* fan speed in RPM */ |
| 81 | #define MAX31785_DEFAULT_FAN_SPEED 0x7fff |
| 82 | #define MAX31785_DEFAULT_FAN_STATUS 0x00 |
| 83 | |
| 84 | #define MAX31785_DEFAULT_FAN_MAX_PWM 0x2710 |
| 85 | |
| 86 | /* |
| 87 | * MAX31785State: |
| 88 | * @code: The command code received |
| 89 | * @page: Each page corresponds to a device monitored by the Max 31785 |
| 90 | * The page register determines the available commands depending on device |
| 91 | * _____________________________________________________________________________ |
| 92 | * | 0 | Fan Connected to PWM0 | |
| 93 | * |_______|___________________________________________________________________| |
| 94 | * | 1 | Fan Connected to PWM1 | |
| 95 | * |_______|___________________________________________________________________| |
| 96 | * | 2 | Fan Connected to PWM2 | |
| 97 | * |_______|___________________________________________________________________| |
| 98 | * | 3 | Fan Connected to PWM3 | |
| 99 | * |_______|___________________________________________________________________| |
| 100 | * | 4 | Fan Connected to PWM4 | |
| 101 | * |_______|___________________________________________________________________| |
| 102 | * | 5 | Fan Connected to PWM5 | |
| 103 | * |_______|___________________________________________________________________| |
| 104 | * | 6 | Remote Thermal Diode Connected to ADC 0 | |
| 105 | * |_______|___________________________________________________________________| |
| 106 | * | 7 | Remote Thermal Diode Connected to ADC 1 | |
| 107 | * |_______|___________________________________________________________________| |
| 108 | * | 8 | Remote Thermal Diode Connected to ADC 2 | |
| 109 | * |_______|___________________________________________________________________| |
| 110 | * | 9 | Remote Thermal Diode Connected to ADC 3 | |
| 111 | * |_______|___________________________________________________________________| |
| 112 | * | 10 | Remote Thermal Diode Connected to ADC 4 | |
| 113 | * |_______|___________________________________________________________________| |
| 114 | * | 11 | Remote Thermal Diode Connected to ADC 5 | |
| 115 | * |_______|___________________________________________________________________| |
| 116 | * | 12 | Internal Temperature Sensor | |
| 117 | * |_______|___________________________________________________________________| |
| 118 | * | 13 | Remote I2C Temperature Sensor with Address 0 | |
| 119 | * |_______|___________________________________________________________________| |
| 120 | * | 14 | Remote I2C Temperature Sensor with Address 1 | |
| 121 | * |_______|___________________________________________________________________| |
| 122 | * | 15 | Remote I2C Temperature Sensor with Address 2 | |
| 123 | * |_______|___________________________________________________________________| |
| 124 | * | 16 | Remote I2C Temperature Sensor with Address 3 | |
| 125 | * |_______|___________________________________________________________________| |
| 126 | * | 17 | Remote I2C Temperature Sensor with Address 4 | |
| 127 | * |_______|___________________________________________________________________| |
| 128 | * | 17 | Remote Voltage Connected to ADC0 | |
| 129 | * |_______|___________________________________________________________________| |
| 130 | * | 18 | Remote Voltage Connected to ADC1 | |
| 131 | * |_______|___________________________________________________________________| |
| 132 | * | 19 | Remote Voltage Connected to ADC2 | |
| 133 | * |_______|___________________________________________________________________| |
| 134 | * | 20 | Remote Voltage Connected to ADC3 | |
| 135 | * |_______|___________________________________________________________________| |
| 136 | * | 21 | Remote Voltage Connected to ADC4 | |
| 137 | * |_______|___________________________________________________________________| |
| 138 | * | 22 | Remote Voltage Connected to ADC5 | |
| 139 | * |_______|___________________________________________________________________| |
| 140 | * |23-254 | Reserved | |
| 141 | * |_______|___________________________________________________________________| |
| 142 | * | 255 | Applies to all pages | |
| 143 | * |_______|___________________________________________________________________| |
| 144 | */ |
| 145 | |
| 146 | /* Place holder to save the max31785 mfr specific registers */ |
| 147 | typedef struct MAX31785State { |
| 148 | PMBusDevice parent; |
| 149 | uint16_t mfr_mode[MAX31785_TOTAL_NUM_PAGES]; |
| 150 | uint16_t vout_peak[MAX31785_TOTAL_NUM_PAGES]; |
| 151 | uint16_t temperature_peak[MAX31785_TOTAL_NUM_PAGES]; |
| 152 | uint16_t vout_min[MAX31785_TOTAL_NUM_PAGES]; |
| 153 | uint8_t fault_response[MAX31785_TOTAL_NUM_PAGES]; |
| 154 | uint32_t time_count[MAX31785_TOTAL_NUM_PAGES]; |
| 155 | uint16_t temp_sensor_config[MAX31785_TOTAL_NUM_PAGES]; |
| 156 | uint16_t fan_config[MAX31785_TOTAL_NUM_PAGES]; |
| 157 | uint16_t read_fan_pwm[MAX31785_TOTAL_NUM_PAGES]; |
| 158 | uint16_t fan_fault_limit[MAX31785_TOTAL_NUM_PAGES]; |
| 159 | uint16_t fan_warn_limit[MAX31785_TOTAL_NUM_PAGES]; |
| 160 | uint16_t fan_run_time[MAX31785_TOTAL_NUM_PAGES]; |
| 161 | uint16_t fan_pwm_avg[MAX31785_TOTAL_NUM_PAGES]; |
| 162 | uint64_t fan_pwm2rpm[MAX31785_TOTAL_NUM_PAGES]; |
| 163 | uint64_t mfr_location; |
| 164 | uint64_t mfr_date; |
| 165 | uint64_t mfr_serial; |
| 166 | uint16_t mfr_revision; |
| 167 | } MAX31785State; |
| 168 | |
| 169 | static uint8_t max31785_read_byte(PMBusDevice *pmdev) |
| 170 | { |
| 171 | MAX31785State *s = MAX31785(pmdev); |
| 172 | switch (pmdev->code) { |
| 173 | |
| 174 | case PMBUS_FAN_CONFIG_1_2: |
| 175 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 176 | pmbus_send8(pmdev, pmdev->pages[pmdev->page].fan_config_1_2); |
| 177 | } |
| 178 | break; |
| 179 | |
| 180 | case PMBUS_FAN_COMMAND_1: |
| 181 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 182 | pmbus_send16(pmdev, pmdev->pages[pmdev->page].fan_command_1); |
| 183 | } |
| 184 | break; |
| 185 | |
| 186 | case PMBUS_READ_FAN_SPEED_1: |
| 187 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 188 | pmbus_send16(pmdev, pmdev->pages[pmdev->page].read_fan_speed_1); |
| 189 | } |
| 190 | break; |
| 191 | |
| 192 | case PMBUS_STATUS_FANS_1_2: |
| 193 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 194 | pmbus_send16(pmdev, pmdev->pages[pmdev->page].status_fans_1_2); |
| 195 | } |
| 196 | break; |
| 197 | |
| 198 | case PMBUS_MFR_REVISION: |
| 199 | pmbus_send16(pmdev, MAX31785_DEFAULT_MFR_REVISION); |
| 200 | break; |
| 201 | |
| 202 | case PMBUS_MFR_ID: |
| 203 | pmbus_send8(pmdev, 0x4d); /* Maxim */ |
| 204 | break; |
| 205 | |
| 206 | case PMBUS_MFR_MODEL: |
| 207 | pmbus_send8(pmdev, 0x53); |
| 208 | break; |
| 209 | |
| 210 | case PMBUS_MFR_LOCATION: |
| 211 | pmbus_send64(pmdev, s->mfr_location); |
| 212 | break; |
| 213 | |
| 214 | case PMBUS_MFR_DATE: |
| 215 | pmbus_send64(pmdev, s->mfr_date); |
| 216 | break; |
| 217 | |
| 218 | case PMBUS_MFR_SERIAL: |
| 219 | pmbus_send64(pmdev, s->mfr_serial); |
| 220 | break; |
| 221 | |
| 222 | case MAX31785_MFR_MODE: |
| 223 | pmbus_send16(pmdev, s->mfr_mode[pmdev->page]); |
| 224 | break; |
| 225 | |
| 226 | case MAX31785_MFR_VOUT_PEAK: |
| 227 | if ((pmdev->page >= MAX31785_MIN_ADC_VOLTAGE_PAGE) && |
| 228 | (pmdev->page <= MAX31785_MAX_ADC_VOLTAGE_PAGE)) { |
| 229 | pmbus_send16(pmdev, s->vout_peak[pmdev->page]); |
| 230 | } |
| 231 | break; |
| 232 | |
| 233 | case MAX31785_MFR_TEMPERATURE_PEAK: |
| 234 | if ((pmdev->page >= MAX31785_MIN_TEMP_PAGE) && |
| 235 | (pmdev->page <= MAX31785_MAX_TEMP_PAGE)) { |
| 236 | pmbus_send16(pmdev, s->temperature_peak[pmdev->page]); |
| 237 | } |
| 238 | break; |
| 239 | |
| 240 | case MAX31785_MFR_VOUT_MIN: |
| 241 | if ((pmdev->page >= MAX31785_MIN_ADC_VOLTAGE_PAGE) && |
| 242 | (pmdev->page <= MAX31785_MAX_ADC_VOLTAGE_PAGE)) { |
| 243 | pmbus_send16(pmdev, s->vout_min[pmdev->page]); |
| 244 | } |
| 245 | break; |
| 246 | |
| 247 | case MAX31785_MFR_FAULT_RESPONSE: |
| 248 | pmbus_send8(pmdev, s->fault_response[pmdev->page]); |
| 249 | break; |
| 250 | |
| 251 | case MAX31785_MFR_TIME_COUNT: /* R/W 32 */ |
| 252 | pmbus_send32(pmdev, s->time_count[pmdev->page]); |
| 253 | break; |
| 254 | |
| 255 | case MAX31785_MFR_TEMP_SENSOR_CONFIG: /* R/W 16 */ |
| 256 | if ((pmdev->page >= MAX31785_MIN_TEMP_PAGE) && |
| 257 | (pmdev->page <= MAX31785_MAX_TEMP_PAGE)) { |
| 258 | pmbus_send16(pmdev, s->temp_sensor_config[pmdev->page]); |
| 259 | } |
| 260 | break; |
| 261 | |
| 262 | case MAX31785_MFR_FAN_CONFIG: /* R/W 16 */ |
| 263 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 264 | pmbus_send16(pmdev, s->fan_config[pmdev->page]); |
| 265 | } |
| 266 | break; |
| 267 | |
| 268 | case MAX31785_MFR_READ_FAN_PWM: /* R/W 16 */ |
| 269 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 270 | pmbus_send16(pmdev, s->read_fan_pwm[pmdev->page]); |
| 271 | } |
| 272 | break; |
| 273 | |
| 274 | case MAX31785_MFR_FAN_FAULT_LIMIT: /* R/W 16 */ |
| 275 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 276 | pmbus_send16(pmdev, s->fan_fault_limit[pmdev->page]); |
| 277 | } |
| 278 | break; |
| 279 | |
| 280 | case MAX31785_MFR_FAN_WARN_LIMIT: /* R/W 16 */ |
| 281 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 282 | pmbus_send16(pmdev, s->fan_warn_limit[pmdev->page]); |
| 283 | } |
| 284 | break; |
| 285 | |
| 286 | case MAX31785_MFR_FAN_RUN_TIME: /* R/W 16 */ |
| 287 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 288 | pmbus_send16(pmdev, s->fan_run_time[pmdev->page]); |
| 289 | } |
| 290 | break; |
| 291 | |
| 292 | case MAX31785_MFR_FAN_PWM_AVG: /* R/W 16 */ |
| 293 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 294 | pmbus_send16(pmdev, s->fan_pwm_avg[pmdev->page]); |
| 295 | } |
| 296 | break; |
| 297 | |
| 298 | case MAX31785_MFR_FAN_PWM2RPM: /* R/W 64 */ |
| 299 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 300 | pmbus_send64(pmdev, s->fan_pwm2rpm[pmdev->page]); |
| 301 | } |
| 302 | break; |
| 303 | |
| 304 | default: |
| 305 | qemu_log_mask(LOG_GUEST_ERROR, |
| 306 | "%s: reading from unsupported register: 0x%02x\n", |
| 307 | __func__, pmdev->code); |
| 308 | break; |
| 309 | } |
| 310 | |
| 311 | return 0xFF; |
| 312 | } |
| 313 | |
| 314 | static int max31785_write_data(PMBusDevice *pmdev, const uint8_t *buf, |
| 315 | uint8_t len) |
| 316 | { |
| 317 | MAX31785State *s = MAX31785(pmdev); |
| 318 | if (len == 0) { |
| 319 | qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__); |
| 320 | return -1; |
| 321 | } |
| 322 | |
| 323 | pmdev->code = buf[0]; /* PMBus command code */ |
| 324 | |
| 325 | if (len == 1) { |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | /* Exclude command code from buffer */ |
| 330 | buf++; |
| 331 | len--; |
| 332 | |
| 333 | switch (pmdev->code) { |
| 334 | |
| 335 | case PMBUS_FAN_CONFIG_1_2: |
| 336 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 337 | pmdev->pages[pmdev->page].fan_config_1_2 = pmbus_receive8(pmdev); |
| 338 | } |
| 339 | break; |
| 340 | |
| 341 | case PMBUS_FAN_COMMAND_1: |
| 342 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 343 | pmdev->pages[pmdev->page].fan_command_1 = pmbus_receive16(pmdev); |
| 344 | pmdev->pages[pmdev->page].read_fan_speed_1 = |
| 345 | ((MAX31785_DEFAULT_FAN_SPEED / MAX31785_DEFAULT_FAN_MAX_PWM) * |
| 346 | pmdev->pages[pmdev->page].fan_command_1); |
| 347 | } |
| 348 | break; |
| 349 | |
| 350 | case PMBUS_MFR_LOCATION: /* R/W 64 */ |
| 351 | s->mfr_location = pmbus_receive64(pmdev); |
| 352 | break; |
| 353 | |
| 354 | case PMBUS_MFR_DATE: /* R/W 64 */ |
| 355 | s->mfr_date = pmbus_receive64(pmdev); |
| 356 | break; |
| 357 | |
| 358 | case PMBUS_MFR_SERIAL: /* R/W 64 */ |
| 359 | s->mfr_serial = pmbus_receive64(pmdev); |
| 360 | break; |
| 361 | |
| 362 | case MAX31785_MFR_MODE: /* R/W word */ |
| 363 | s->mfr_mode[pmdev->page] = pmbus_receive16(pmdev); |
| 364 | break; |
| 365 | |
| 366 | case MAX31785_MFR_VOUT_PEAK: /* R/W word */ |
| 367 | if ((pmdev->page >= MAX31785_MIN_ADC_VOLTAGE_PAGE) && |
| 368 | (pmdev->page <= MAX31785_MAX_ADC_VOLTAGE_PAGE)) { |
| 369 | s->vout_peak[pmdev->page] = pmbus_receive16(pmdev); |
| 370 | } |
| 371 | break; |
| 372 | |
| 373 | case MAX31785_MFR_TEMPERATURE_PEAK: /* R/W word */ |
| 374 | if ((pmdev->page >= 6) && (pmdev->page <= 16)) { |
| 375 | s->temperature_peak[pmdev->page] = pmbus_receive16(pmdev); |
| 376 | } |
| 377 | break; |
| 378 | |
| 379 | case MAX31785_MFR_VOUT_MIN: /* R/W word */ |
| 380 | if ((pmdev->page >= MAX31785_MIN_ADC_VOLTAGE_PAGE) && |
| 381 | (pmdev->page <= MAX31785_MAX_ADC_VOLTAGE_PAGE)) { |
| 382 | s->vout_min[pmdev->page] = pmbus_receive16(pmdev); |
| 383 | } |
| 384 | break; |
| 385 | |
| 386 | case MAX31785_MFR_FAULT_RESPONSE: /* R/W 8 */ |
| 387 | s->fault_response[pmdev->page] = pmbus_receive8(pmdev); |
| 388 | break; |
| 389 | |
| 390 | case MAX31785_MFR_TIME_COUNT: /* R/W 32 */ |
| 391 | s->time_count[pmdev->page] = pmbus_receive32(pmdev); |
| 392 | break; |
| 393 | |
| 394 | case MAX31785_MFR_TEMP_SENSOR_CONFIG: /* R/W 16 */ |
| 395 | if ((pmdev->page >= MAX31785_MIN_TEMP_PAGE) && |
| 396 | (pmdev->page <= MAX31785_MAX_TEMP_PAGE)) { |
| 397 | s->temp_sensor_config[pmdev->page] = pmbus_receive16(pmdev); |
| 398 | } |
| 399 | break; |
| 400 | |
| 401 | case MAX31785_MFR_FAN_CONFIG: /* R/W 16 */ |
| 402 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 403 | s->fan_config[pmdev->page] = pmbus_receive16(pmdev); |
| 404 | } |
| 405 | break; |
| 406 | |
| 407 | case MAX31785_MFR_FAN_FAULT_LIMIT: /* R/W 16 */ |
| 408 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 409 | s->fan_fault_limit[pmdev->page] = pmbus_receive16(pmdev); |
| 410 | } |
| 411 | break; |
| 412 | |
| 413 | case MAX31785_MFR_FAN_WARN_LIMIT: /* R/W 16 */ |
| 414 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 415 | s->fan_warn_limit[pmdev->page] = pmbus_receive16(pmdev); |
| 416 | } |
| 417 | break; |
| 418 | |
| 419 | case MAX31785_MFR_FAN_RUN_TIME: /* R/W 16 */ |
| 420 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 421 | s->fan_run_time[pmdev->page] = pmbus_receive16(pmdev); |
| 422 | } |
| 423 | break; |
| 424 | |
| 425 | case MAX31785_MFR_FAN_PWM_AVG: /* R/W 16 */ |
| 426 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 427 | s->fan_pwm_avg[pmdev->page] = pmbus_receive16(pmdev); |
| 428 | } |
| 429 | break; |
| 430 | |
| 431 | case MAX31785_MFR_FAN_PWM2RPM: /* R/W 64 */ |
| 432 | if (pmdev->page <= MAX31785_MAX_FAN_PAGE) { |
| 433 | s->fan_pwm2rpm[pmdev->page] = pmbus_receive64(pmdev); |
| 434 | } |
| 435 | break; |
| 436 | |
| 437 | default: |
| 438 | qemu_log_mask(LOG_GUEST_ERROR, |
| 439 | "%s: writing to unsupported register: 0x%02x\n", |
| 440 | __func__, pmdev->code); |
| 441 | break; |
| 442 | } |
| 443 | |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | static void max31785_exit_reset(Object *obj, ResetType type) |
| 448 | { |
| 449 | PMBusDevice *pmdev = PMBUS_DEVICE(obj); |
| 450 | MAX31785State *s = MAX31785(obj); |
| 451 | |
| 452 | pmdev->capability = MAX31785_DEFAULT_CAPABILITY; |
| 453 | |
| 454 | for (int i = MAX31785_MIN_FAN_PAGE; i <= MAX31785_MAX_FAN_PAGE; i++) { |
| 455 | pmdev->pages[i].vout_mode = MAX31785_DEFAULT_VOUT_MODE; |
| 456 | pmdev->pages[i].fan_command_1 = MAX31785_DEFAULT_FAN_COMMAND_1; |
| 457 | pmdev->pages[i].revision = MAX31785_DEFAULT_PMBUS_REVISION; |
| 458 | pmdev->pages[i].fan_config_1_2 = MAX31785_DEFAULT_FAN_CONFIG_1_2(0); |
| 459 | pmdev->pages[i].read_fan_speed_1 = MAX31785_DEFAULT_FAN_SPEED; |
| 460 | pmdev->pages[i].status_fans_1_2 = MAX31785_DEFAULT_FAN_STATUS; |
| 461 | } |
| 462 | |
| 463 | for (int i = MAX31785_MIN_TEMP_PAGE; i <= MAX31785_MAX_TEMP_PAGE; i++) { |
| 464 | pmdev->pages[i].vout_mode = MAX31785_DEFAULT_VOUT_MODE; |
| 465 | pmdev->pages[i].revision = MAX31785_DEFAULT_PMBUS_REVISION; |
| 466 | pmdev->pages[i].ot_fault_limit = MAX31785_DEFAULT_OT_FAULT_LIMIT; |
| 467 | pmdev->pages[i].ot_warn_limit = MAX31785_DEFAULT_OT_WARN_LIMIT; |
| 468 | } |
| 469 | |
| 470 | for (int i = MAX31785_MIN_ADC_VOLTAGE_PAGE; |
| 471 | i <= MAX31785_MAX_ADC_VOLTAGE_PAGE; |
| 472 | i++) { |
| 473 | pmdev->pages[i].vout_mode = MAX31785_DEFAULT_VOUT_MODE; |
| 474 | pmdev->pages[i].revision = MAX31785_DEFAULT_PMBUS_REVISION; |
| 475 | pmdev->pages[i].vout_scale_monitor = |
| 476 | MAX31785_DEFAULT_VOUT_SCALE_MONITOR; |
| 477 | pmdev->pages[i].vout_ov_fault_limit = MAX31785_DEFAULT_OV_FAULT_LIMIT; |
| 478 | pmdev->pages[i].vout_ov_warn_limit = MAX31785_DEFAULT_OV_WARN_LIMIT; |
| 479 | } |
| 480 | |
| 481 | s->mfr_location = MAX31785_DEFAULT_TEXT; |
| 482 | s->mfr_date = MAX31785_DEFAULT_TEXT; |
| 483 | s->mfr_serial = MAX31785_DEFAULT_TEXT; |
| 484 | } |
| 485 | |
| 486 | static const VMStateDescription vmstate_max31785 = { |
| 487 | .name = TYPE_MAX31785, |
| 488 | .version_id = 0, |
| 489 | .minimum_version_id = 0, |
| 490 | .fields = (const VMStateField[]){ |
| 491 | VMSTATE_PMBUS_DEVICE(parent, MAX31785State), |
| 492 | VMSTATE_UINT16_ARRAY(mfr_mode, MAX31785State, |
| 493 | MAX31785_TOTAL_NUM_PAGES), |
| 494 | VMSTATE_UINT16_ARRAY(vout_peak, MAX31785State, |
| 495 | MAX31785_TOTAL_NUM_PAGES), |
| 496 | VMSTATE_UINT16_ARRAY(temperature_peak, MAX31785State, |
| 497 | MAX31785_TOTAL_NUM_PAGES), |
| 498 | VMSTATE_UINT16_ARRAY(vout_min, MAX31785State, |
| 499 | MAX31785_TOTAL_NUM_PAGES), |
| 500 | VMSTATE_UINT8_ARRAY(fault_response, MAX31785State, |
| 501 | MAX31785_TOTAL_NUM_PAGES), |
| 502 | VMSTATE_UINT32_ARRAY(time_count, MAX31785State, |
| 503 | MAX31785_TOTAL_NUM_PAGES), |
| 504 | VMSTATE_UINT16_ARRAY(temp_sensor_config, MAX31785State, |
| 505 | MAX31785_TOTAL_NUM_PAGES), |
| 506 | VMSTATE_UINT16_ARRAY(fan_config, MAX31785State, |
| 507 | MAX31785_TOTAL_NUM_PAGES), |
| 508 | VMSTATE_UINT16_ARRAY(read_fan_pwm, MAX31785State, |
| 509 | MAX31785_TOTAL_NUM_PAGES), |
| 510 | VMSTATE_UINT16_ARRAY(fan_fault_limit, MAX31785State, |
| 511 | MAX31785_TOTAL_NUM_PAGES), |
| 512 | VMSTATE_UINT16_ARRAY(fan_warn_limit, MAX31785State, |
| 513 | MAX31785_TOTAL_NUM_PAGES), |
| 514 | VMSTATE_UINT16_ARRAY(fan_run_time, MAX31785State, |
| 515 | MAX31785_TOTAL_NUM_PAGES), |
| 516 | VMSTATE_UINT16_ARRAY(fan_pwm_avg, MAX31785State, |
| 517 | MAX31785_TOTAL_NUM_PAGES), |
| 518 | VMSTATE_UINT64_ARRAY(fan_pwm2rpm, MAX31785State, |
| 519 | MAX31785_TOTAL_NUM_PAGES), |
| 520 | VMSTATE_UINT64(mfr_location, MAX31785State), |
| 521 | VMSTATE_UINT64(mfr_date, MAX31785State), |
| 522 | VMSTATE_UINT64(mfr_serial, MAX31785State), |
| 523 | VMSTATE_END_OF_LIST() |
| 524 | } |
| 525 | }; |
| 526 | |
| 527 | static void max31785_init(Object *obj) |
| 528 | { |
| 529 | PMBusDevice *pmdev = PMBUS_DEVICE(obj); |
| 530 | |
| 531 | for (int i = MAX31785_MIN_FAN_PAGE; i <= MAX31785_MAX_FAN_PAGE; i++) { |
| 532 | pmbus_page_config(pmdev, i, PB_HAS_VOUT_MODE); |
| 533 | } |
| 534 | |
| 535 | for (int i = MAX31785_MIN_TEMP_PAGE; i <= MAX31785_MAX_TEMP_PAGE; i++) { |
| 536 | pmbus_page_config(pmdev, i, PB_HAS_VOUT_MODE | PB_HAS_TEMPERATURE); |
| 537 | } |
| 538 | |
| 539 | for (int i = MAX31785_MIN_ADC_VOLTAGE_PAGE; |
| 540 | i <= MAX31785_MAX_ADC_VOLTAGE_PAGE; |
| 541 | i++) { |
| 542 | pmbus_page_config(pmdev, i, PB_HAS_VOUT_MODE | PB_HAS_VOUT | |
| 543 | PB_HAS_VOUT_RATING); |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | static void max31785_class_init(ObjectClass *klass, const void *data) |
| 548 | { |
| 549 | ResettableClass *rc = RESETTABLE_CLASS(klass); |
| 550 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 551 | PMBusDeviceClass *k = PMBUS_DEVICE_CLASS(klass); |
| 552 | dc->desc = "Maxim MAX31785 6-Channel Fan Controller"; |
| 553 | dc->vmsd = &vmstate_max31785; |
| 554 | k->write_data = max31785_write_data; |
| 555 | k->receive_byte = max31785_read_byte; |
| 556 | k->device_num_pages = MAX31785_TOTAL_NUM_PAGES; |
| 557 | rc->phases.exit = max31785_exit_reset; |
| 558 | } |
| 559 | |
| 560 | static const TypeInfo max31785_info = { |
| 561 | .name = TYPE_MAX31785, |
| 562 | .parent = TYPE_PMBUS_DEVICE, |
| 563 | .instance_size = sizeof(MAX31785State), |
| 564 | .instance_init = max31785_init, |
| 565 | .class_init = max31785_class_init, |
| 566 | }; |
| 567 | |
| 568 | static void max31785_register_types(void) |
| 569 | { |
| 570 | type_register_static(&max31785_info); |
| 571 | } |
| 572 | |
| 573 | type_init(max31785_register_types) |