| /* |
| * Maxim MAX34451 PMBus 16-Channel V/I monitor and 12-Channel Sequencer/Marginer |
| * |
| * Copyright 2021 Google LLC |
| * |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "hw/i2c/pmbus_device.h" |
| #include "hw/irq.h" |
| #include "migration/vmstate.h" |
| #include "qapi/error.h" |
| #include "qapi/visitor.h" |
| #include "qemu/log.h" |
| #include "qemu/module.h" |
| |
| #define TYPE_MAX34451 "max34451" |
| #define MAX34451(obj) OBJECT_CHECK(MAX34451State, (obj), TYPE_MAX34451) |
| |
| #define MAX34451_MFR_MODE 0xD1 |
| #define MAX34451_MFR_PSEN_CONFIG 0xD2 |
| #define MAX34451_MFR_VOUT_PEAK 0xD4 |
| #define MAX34451_MFR_IOUT_PEAK 0xD5 |
| #define MAX34451_MFR_TEMPERATURE_PEAK 0xD6 |
| #define MAX34451_MFR_VOUT_MIN 0xD7 |
| #define MAX34451_MFR_NV_LOG_CONFIG 0xD8 |
| #define MAX34451_MFR_FAULT_RESPONSE 0xD9 |
| #define MAX34451_MFR_FAULT_RETRY 0xDA |
| #define MAX34451_MFR_NV_FAULT_LOG 0xDC |
| #define MAX34451_MFR_TIME_COUNT 0xDD |
| #define MAX34451_MFR_MARGIN_CONFIG 0xDF |
| #define MAX34451_MFR_FW_SERIAL 0xE0 |
| #define MAX34451_MFR_IOUT_AVG 0xE2 |
| #define MAX34451_MFR_CHANNEL_CONFIG 0xE4 |
| #define MAX34451_MFR_TON_SEQ_MAX 0xE6 |
| #define MAX34451_MFR_PWM_CONFIG 0xE7 |
| #define MAX34451_MFR_SEQ_CONFIG 0xE8 |
| #define MAX34451_MFR_STORE_ALL 0xEE |
| #define MAX34451_MFR_RESTORE_ALL 0xEF |
| #define MAX34451_MFR_TEMP_SENSOR_CONFIG 0xF0 |
| #define MAX34451_MFR_STORE_SINGLE 0xFC |
| #define MAX34451_MFR_CRC 0xFE |
| |
| #define MAX34451_NUM_MARGINED_PSU 12 |
| #define MAX34451_NUM_PWR_DEVICES 16 |
| #define MAX34451_NUM_TEMP_DEVICES 5 |
| #define MAX34451_NUM_PAGES 21 |
| |
| #define DEFAULT_OP_ON 0x80 |
| #define DEFAULT_CAPABILITY 0x20 |
| #define DEFAULT_ON_OFF_CONFIG 0x1a |
| #define DEFAULT_VOUT_MODE 0x40 |
| #define DEFAULT_TEMPERATURE 2500 |
| #define DEFAULT_SCALE 0x7FFF |
| #define DEFAULT_OV_LIMIT 0x7FFF |
| #define DEFAULT_OC_LIMIT 0x7FFF |
| #define DEFAULT_OT_LIMIT 0x7FFF |
| #define DEFAULT_VMIN 0x7FFF |
| #define DEFAULT_TON_FAULT_LIMIT 0xFFFF |
| #define DEFAULT_CHANNEL_CONFIG 0x20 |
| #define DEFAULT_TEXT 0x3130313031303130 |
| |
| /** |
| * MAX34451State: |
| * @code: The command code received |
| * @page: Each page corresponds to a device monitored by the Max 34451 |
| * The page register determines the available commands depending on device |
| ___________________________________________________________________________ |
| | 0 | Power supply monitored by RS0, controlled by PSEN0, and | |
| | | margined with PWM0. | |
| |_______|___________________________________________________________________| |
| | 1 | Power supply monitored by RS1, controlled by PSEN1, and | |
| | | margined with PWM1. | |
| |_______|___________________________________________________________________| |
| | 2 | Power supply monitored by RS2, controlled by PSEN2, and | |
| | | margined with PWM2. | |
| |_______|___________________________________________________________________| |
| | 3 | Power supply monitored by RS3, controlled by PSEN3, and | |
| | | margined with PWM3. | |
| |_______|___________________________________________________________________| |
| | 4 | Power supply monitored by RS4, controlled by PSEN4, and | |
| | | margined with PWM4. | |
| |_______|___________________________________________________________________| |
| | 5 | Power supply monitored by RS5, controlled by PSEN5, and | |
| | | margined with PWM5. | |
| |_______|___________________________________________________________________| |
| | 6 | Power supply monitored by RS6, controlled by PSEN6, and | |
| | | margined with PWM6. | |
| |_______|___________________________________________________________________| |
| | 7 | Power supply monitored by RS7, controlled by PSEN7, and | |
| | | margined with PWM7. | |
| |_______|___________________________________________________________________| |
| | 8 | Power supply monitored by RS8, controlled by PSEN8, and | |
| | | optionally margined by OUT0 of external DS4424 at I2C address A0h.| |
| |_______|___________________________________________________________________| |
| | 9 | Power supply monitored by RS9, controlled by PSEN9, and | |
| | | optionally margined by OUT1 of external DS4424 at I2C address A0h.| |
| |_______|___________________________________________________________________| |
| | 10 | Power supply monitored by RS10, controlled by PSEN10, and | |
| | | optionally margined by OUT2 of external DS4424 at I2C address A0h.| |
| |_______|___________________________________________________________________| |
| | 11 | Power supply monitored by RS11, controlled by PSEN11, and | |
| | | optionally margined by OUT3 of external DS4424 at I2C address A0h.| |
| |_______|___________________________________________________________________| |
| | 12 | ADC channel 12 (monitors voltage or current) or GPI. | |
| |_______|___________________________________________________________________| |
| | 13 | ADC channel 13 (monitors voltage or current) or GPI. | |
| |_______|___________________________________________________________________| |
| | 14 | ADC channel 14 (monitors voltage or current) or GPI. | |
| |_______|___________________________________________________________________| |
| | 15 | ADC channel 15 (monitors voltage or current) or GPI. | |
| |_______|___________________________________________________________________| |
| | 16 | Internal temperature sensor. | |
| |_______|___________________________________________________________________| |
| | 17 | External DS75LV temperature sensor with I2C address 90h. | |
| |_______|___________________________________________________________________| |
| | 18 | External DS75LV temperature sensor with I2C address 92h. | |
| |_______|___________________________________________________________________| |
| | 19 | External DS75LV temperature sensor with I2C address 94h. | |
| |_______|___________________________________________________________________| |
| | 20 | External DS75LV temperature sensor with I2C address 96h. | |
| |_______|___________________________________________________________________| |
| | 21=E2=80=93254| Reserved. | |
| |_______|___________________________________________________________________| |
| | 255 | Applies to all pages. | |
| |_______|___________________________________________________________________| |
| * |
| * @operation: Turn on and off power supplies |
| * @on_off_config: Configure the power supply on and off transition behaviour |
| * @write_protect: protect against changes to the device's memory |
| * @vout_margin_high: the voltage when OPERATION is set to margin high |
| * @vout_margin_low: the voltage when OPERATION is set to margin low |
| * @vout_scale: scale ADC reading to actual device reading if different |
| * @iout_cal_gain: set ratio of the voltage at the ADC input to sensed current |
| */ |
| typedef struct MAX34451State { |
| PMBusDevice parent; |
| |
| uint16_t power_good_on[MAX34451_NUM_PWR_DEVICES]; |
| uint16_t power_good_off[MAX34451_NUM_PWR_DEVICES]; |
| uint16_t ton_delay[MAX34451_NUM_MARGINED_PSU]; |
| uint16_t ton_max_fault_limit[MAX34451_NUM_MARGINED_PSU]; |
| uint16_t toff_delay[MAX34451_NUM_MARGINED_PSU]; |
| uint8_t status_mfr_specific[MAX34451_NUM_PWR_DEVICES]; |
| /* Manufacturer specific function */ |
| uint64_t mfr_location; |
| uint64_t mfr_date; |
| uint64_t mfr_serial; |
| uint16_t mfr_mode; |
| uint32_t psen_config[MAX34451_NUM_MARGINED_PSU]; |
| uint16_t vout_peak[MAX34451_NUM_PWR_DEVICES]; |
| uint16_t iout_peak[MAX34451_NUM_PWR_DEVICES]; |
| uint16_t temperature_peak[MAX34451_NUM_TEMP_DEVICES]; |
| uint16_t vout_min[MAX34451_NUM_PWR_DEVICES]; |
| uint16_t nv_log_config; |
| uint32_t fault_response[MAX34451_NUM_PWR_DEVICES]; |
| uint16_t fault_retry; |
| uint32_t fault_log; |
| uint32_t time_count; |
| uint16_t margin_config[MAX34451_NUM_MARGINED_PSU]; |
| uint16_t fw_serial; |
| uint16_t iout_avg[MAX34451_NUM_PWR_DEVICES]; |
| uint16_t channel_config[MAX34451_NUM_PWR_DEVICES]; |
| uint16_t ton_seq_max[MAX34451_NUM_MARGINED_PSU]; |
| uint32_t pwm_config[MAX34451_NUM_MARGINED_PSU]; |
| uint32_t seq_config[MAX34451_NUM_MARGINED_PSU]; |
| uint16_t temp_sensor_config[MAX34451_NUM_TEMP_DEVICES]; |
| uint16_t store_single; |
| uint16_t crc; |
| } MAX34451State; |
| |
| |
| static void max34451_check_limits(MAX34451State *s) |
| { |
| PMBusDevice *pmdev = PMBUS_DEVICE(s); |
| |
| pmbus_check_limits(pmdev); |
| |
| for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) { |
| if (pmdev->pages[i].read_vout == 0) { /* PSU disabled */ |
| continue; |
| } |
| |
| if (pmdev->pages[i].read_vout > s->vout_peak[i]) { |
| s->vout_peak[i] = pmdev->pages[i].read_vout; |
| } |
| |
| if (pmdev->pages[i].read_vout < s->vout_min[i]) { |
| s->vout_min[i] = pmdev->pages[i].read_vout; |
| } |
| |
| if (pmdev->pages[i].read_iout > s->iout_peak[i]) { |
| s->iout_peak[i] = pmdev->pages[i].read_iout; |
| } |
| } |
| |
| for (int i = 0; i < MAX34451_NUM_TEMP_DEVICES; i++) { |
| if (pmdev->pages[i + 16].read_temperature_1 > s->temperature_peak[i]) { |
| s->temperature_peak[i] = pmdev->pages[i + 16].read_temperature_1; |
| } |
| } |
| } |
| |
| static uint8_t max34451_read_byte(PMBusDevice *pmdev) |
| { |
| MAX34451State *s = MAX34451(pmdev); |
| switch (pmdev->code) { |
| |
| case PMBUS_POWER_GOOD_ON: |
| if (pmdev->page < 16) { |
| pmbus_send16(pmdev, s->power_good_on[pmdev->page]); |
| } |
| break; |
| |
| case PMBUS_POWER_GOOD_OFF: |
| if (pmdev->page < 16) { |
| pmbus_send16(pmdev, s->power_good_off[pmdev->page]); |
| } |
| break; |
| |
| case PMBUS_TON_DELAY: |
| if (pmdev->page < 12) { |
| pmbus_send16(pmdev, s->ton_delay[pmdev->page]); |
| } |
| break; |
| |
| case PMBUS_TON_MAX_FAULT_LIMIT: |
| if (pmdev->page < 12) { |
| pmbus_send16(pmdev, s->ton_max_fault_limit[pmdev->page]); |
| } |
| break; |
| |
| case PMBUS_TOFF_DELAY: |
| if (pmdev->page < 12) { |
| pmbus_send16(pmdev, s->toff_delay[pmdev->page]); |
| } |
| break; |
| |
| case PMBUS_STATUS_MFR_SPECIFIC: |
| if (pmdev->page < 16) { |
| pmbus_send8(pmdev, s->status_mfr_specific[pmdev->page]); |
| } |
| break; |
| |
| case PMBUS_MFR_ID: |
| pmbus_send8(pmdev, 0x4d); /* Maxim */ |
| break; |
| |
| case PMBUS_MFR_MODEL: |
| pmbus_send8(pmdev, 0x59); |
| break; |
| |
| case PMBUS_MFR_LOCATION: |
| pmbus_send64(pmdev, s->mfr_location); |
| break; |
| |
| case PMBUS_MFR_DATE: |
| pmbus_send64(pmdev, s->mfr_date); |
| break; |
| |
| case PMBUS_MFR_SERIAL: |
| pmbus_send64(pmdev, s->mfr_serial); |
| break; |
| |
| case MAX34451_MFR_MODE: |
| pmbus_send16(pmdev, s->mfr_mode); |
| break; |
| |
| case MAX34451_MFR_PSEN_CONFIG: |
| if (pmdev->page < 12) { |
| pmbus_send32(pmdev, s->psen_config[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_VOUT_PEAK: |
| if (pmdev->page < 16) { |
| pmbus_send16(pmdev, s->vout_peak[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_IOUT_PEAK: |
| if (pmdev->page < 16) { |
| pmbus_send16(pmdev, s->iout_peak[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_TEMPERATURE_PEAK: |
| if (15 < pmdev->page && pmdev->page < 21) { |
| pmbus_send16(pmdev, s->temperature_peak[pmdev->page % 16]); |
| } else { |
| pmbus_send16(pmdev, s->temperature_peak[0]); |
| } |
| break; |
| |
| case MAX34451_MFR_VOUT_MIN: |
| if (pmdev->page < 16) { |
| pmbus_send16(pmdev, s->vout_min[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_NV_LOG_CONFIG: |
| pmbus_send16(pmdev, s->nv_log_config); |
| break; |
| |
| case MAX34451_MFR_FAULT_RESPONSE: |
| if (pmdev->page < 16) { |
| pmbus_send32(pmdev, s->fault_response[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_FAULT_RETRY: |
| pmbus_send32(pmdev, s->fault_retry); |
| break; |
| |
| case MAX34451_MFR_NV_FAULT_LOG: |
| pmbus_send32(pmdev, s->fault_log); |
| break; |
| |
| case MAX34451_MFR_TIME_COUNT: |
| pmbus_send32(pmdev, s->time_count); |
| break; |
| |
| case MAX34451_MFR_MARGIN_CONFIG: |
| if (pmdev->page < 12) { |
| pmbus_send16(pmdev, s->margin_config[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_FW_SERIAL: |
| if (pmdev->page == 255) { |
| pmbus_send16(pmdev, 1); /* Firmware revision */ |
| } |
| break; |
| |
| case MAX34451_MFR_IOUT_AVG: |
| if (pmdev->page < 16) { |
| pmbus_send16(pmdev, s->iout_avg[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_CHANNEL_CONFIG: |
| if (pmdev->page < 16) { |
| pmbus_send16(pmdev, s->channel_config[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_TON_SEQ_MAX: |
| if (pmdev->page < 12) { |
| pmbus_send16(pmdev, s->ton_seq_max[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_PWM_CONFIG: |
| if (pmdev->page < 12) { |
| pmbus_send32(pmdev, s->pwm_config[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_SEQ_CONFIG: |
| if (pmdev->page < 12) { |
| pmbus_send32(pmdev, s->seq_config[pmdev->page]); |
| } |
| break; |
| |
| case MAX34451_MFR_TEMP_SENSOR_CONFIG: |
| if (15 < pmdev->page && pmdev->page < 21) { |
| pmbus_send32(pmdev, s->temp_sensor_config[pmdev->page % 16]); |
| } |
| break; |
| |
| case MAX34451_MFR_STORE_SINGLE: |
| pmbus_send32(pmdev, s->store_single); |
| break; |
| |
| case MAX34451_MFR_CRC: |
| pmbus_send32(pmdev, s->crc); |
| break; |
| |
| default: |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: reading from unsupported register: 0x%02x\n", |
| __func__, pmdev->code); |
| break; |
| } |
| return 0xFF; |
| } |
| |
| static int max34451_write_data(PMBusDevice *pmdev, const uint8_t *buf, |
| uint8_t len) |
| { |
| MAX34451State *s = MAX34451(pmdev); |
| |
| if (len == 0) { |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__); |
| return -1; |
| } |
| |
| pmdev->code = buf[0]; /* PMBus command code */ |
| |
| if (len == 1) { |
| return 0; |
| } |
| |
| /* Exclude command code from buffer */ |
| buf++; |
| len--; |
| uint8_t index = pmdev->page; |
| |
| switch (pmdev->code) { |
| case MAX34451_MFR_STORE_ALL: |
| case MAX34451_MFR_RESTORE_ALL: |
| case MAX34451_MFR_STORE_SINGLE: |
| /* |
| * TODO: hardware behaviour is to move the contents of volatile |
| * memory to non-volatile memory. |
| */ |
| break; |
| |
| case PMBUS_POWER_GOOD_ON: /* R/W word */ |
| if (pmdev->page < MAX34451_NUM_PWR_DEVICES) { |
| s->power_good_on[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case PMBUS_POWER_GOOD_OFF: /* R/W word */ |
| if (pmdev->page < MAX34451_NUM_PWR_DEVICES) { |
| s->power_good_off[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case PMBUS_TON_DELAY: /* R/W word */ |
| if (pmdev->page < 12) { |
| s->ton_delay[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case PMBUS_TON_MAX_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->page < 12) { |
| s->ton_max_fault_limit[pmdev->page] |
| = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case PMBUS_TOFF_DELAY: /* R/W word */ |
| if (pmdev->page < 12) { |
| s->toff_delay[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case PMBUS_MFR_LOCATION: /* R/W 64 */ |
| s->mfr_location = pmbus_receive64(pmdev); |
| break; |
| |
| case PMBUS_MFR_DATE: /* R/W 64 */ |
| s->mfr_date = pmbus_receive64(pmdev); |
| break; |
| |
| case PMBUS_MFR_SERIAL: /* R/W 64 */ |
| s->mfr_serial = pmbus_receive64(pmdev); |
| break; |
| |
| case MAX34451_MFR_MODE: /* R/W word */ |
| s->mfr_mode = pmbus_receive16(pmdev); |
| break; |
| |
| case MAX34451_MFR_PSEN_CONFIG: /* R/W 32 */ |
| if (pmdev->page < 12) { |
| s->psen_config[pmdev->page] = pmbus_receive32(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_VOUT_PEAK: /* R/W word */ |
| if (pmdev->page < 16) { |
| s->vout_peak[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_IOUT_PEAK: /* R/W word */ |
| if (pmdev->page < 16) { |
| s->iout_peak[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_TEMPERATURE_PEAK: /* R/W word */ |
| if (15 < pmdev->page && pmdev->page < 21) { |
| s->temperature_peak[pmdev->page % 16] |
| = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_VOUT_MIN: /* R/W word */ |
| if (pmdev->page < 16) { |
| s->vout_min[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_NV_LOG_CONFIG: /* R/W word */ |
| s->nv_log_config = pmbus_receive16(pmdev); |
| break; |
| |
| case MAX34451_MFR_FAULT_RESPONSE: /* R/W 32 */ |
| if (pmdev->page < 16) { |
| s->fault_response[pmdev->page] = pmbus_receive32(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_FAULT_RETRY: /* R/W word */ |
| s->fault_retry = pmbus_receive16(pmdev); |
| break; |
| |
| case MAX34451_MFR_TIME_COUNT: /* R/W 32 */ |
| s->time_count = pmbus_receive32(pmdev); |
| break; |
| |
| case MAX34451_MFR_MARGIN_CONFIG: /* R/W word */ |
| if (pmdev->page < 12) { |
| s->margin_config[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_CHANNEL_CONFIG: /* R/W word */ |
| if (pmdev->page < 16) { |
| s->channel_config[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_TON_SEQ_MAX: /* R/W word */ |
| if (pmdev->page < 12) { |
| s->ton_seq_max[pmdev->page] = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_PWM_CONFIG: /* R/W 32 */ |
| if (pmdev->page < 12) { |
| s->pwm_config[pmdev->page] = pmbus_receive32(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_SEQ_CONFIG: /* R/W 32 */ |
| if (pmdev->page < 12) { |
| s->seq_config[pmdev->page] = pmbus_receive32(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_TEMP_SENSOR_CONFIG: /* R/W word */ |
| if (15 < pmdev->page && pmdev->page < 21) { |
| s->temp_sensor_config[pmdev->page % 16] |
| = pmbus_receive16(pmdev); |
| } |
| break; |
| |
| case MAX34451_MFR_CRC: /* R/W word */ |
| s->crc = pmbus_receive16(pmdev); |
| break; |
| |
| case MAX34451_MFR_NV_FAULT_LOG: |
| case MAX34451_MFR_FW_SERIAL: |
| case MAX34451_MFR_IOUT_AVG: |
| /* Read only commands */ |
| pmdev->pages[index].status_word |= PMBUS_STATUS_CML; |
| pmdev->pages[index].status_cml |= PB_CML_FAULT_INVALID_DATA; |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: writing to read-only register 0x%02x\n", |
| __func__, pmdev->code); |
| break; |
| |
| default: |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: writing to unsupported register: 0x%02x\n", |
| __func__, pmdev->code); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static void max34451_get(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| visit_type_uint16(v, name, (uint16_t *)opaque, errp); |
| } |
| |
| static void max34451_set(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| MAX34451State *s = MAX34451(obj); |
| uint16_t *internal = opaque; |
| uint16_t value; |
| if (!visit_type_uint16(v, name, &value, errp)) { |
| return; |
| } |
| |
| *internal = value; |
| max34451_check_limits(s); |
| } |
| |
| /* used to init uint16_t arrays */ |
| static inline void *memset_word(void *s, uint16_t c, size_t n) |
| { |
| size_t i; |
| uint16_t *p = s; |
| |
| for (i = 0; i < n; i++) { |
| p[i] = c; |
| } |
| |
| return s; |
| } |
| |
| static void max34451_exit_reset(Object *obj) |
| { |
| PMBusDevice *pmdev = PMBUS_DEVICE(obj); |
| MAX34451State *s = MAX34451(obj); |
| pmdev->capability = DEFAULT_CAPABILITY; |
| |
| for (int i = 0; i < MAX34451_NUM_PAGES; i++) { |
| pmdev->pages[i].operation = DEFAULT_OP_ON; |
| pmdev->pages[i].on_off_config = DEFAULT_ON_OFF_CONFIG; |
| pmdev->pages[i].revision = 0x11; |
| pmdev->pages[i].vout_mode = DEFAULT_VOUT_MODE; |
| } |
| |
| for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) { |
| pmdev->pages[i].vout_scale_monitor = DEFAULT_SCALE; |
| pmdev->pages[i].vout_ov_fault_limit = DEFAULT_OV_LIMIT; |
| pmdev->pages[i].vout_ov_warn_limit = DEFAULT_OV_LIMIT; |
| pmdev->pages[i].iout_oc_warn_limit = DEFAULT_OC_LIMIT; |
| pmdev->pages[i].iout_oc_fault_limit = DEFAULT_OC_LIMIT; |
| } |
| |
| for (int i = 0; i < MAX34451_NUM_MARGINED_PSU; i++) { |
| pmdev->pages[i].ton_max_fault_limit = DEFAULT_TON_FAULT_LIMIT; |
| } |
| |
| for (int i = 16; i < MAX34451_NUM_TEMP_DEVICES + 16; i++) { |
| pmdev->pages[i].read_temperature_1 = DEFAULT_TEMPERATURE; |
| pmdev->pages[i].ot_warn_limit = DEFAULT_OT_LIMIT; |
| pmdev->pages[i].ot_fault_limit = DEFAULT_OT_LIMIT; |
| } |
| |
| memset_word(s->ton_max_fault_limit, DEFAULT_TON_FAULT_LIMIT, |
| MAX34451_NUM_MARGINED_PSU); |
| memset_word(s->channel_config, DEFAULT_CHANNEL_CONFIG, |
| MAX34451_NUM_PWR_DEVICES); |
| memset_word(s->vout_min, DEFAULT_VMIN, MAX34451_NUM_PWR_DEVICES); |
| |
| s->mfr_location = DEFAULT_TEXT; |
| s->mfr_date = DEFAULT_TEXT; |
| s->mfr_serial = DEFAULT_TEXT; |
| } |
| |
| static const VMStateDescription vmstate_max34451 = { |
| .name = TYPE_MAX34451, |
| .version_id = 0, |
| .minimum_version_id = 0, |
| .fields = (VMStateField[]){ |
| VMSTATE_PMBUS_DEVICE(parent, MAX34451State), |
| VMSTATE_UINT16_ARRAY(power_good_on, MAX34451State, |
| MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT16_ARRAY(power_good_off, MAX34451State, |
| MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT16_ARRAY(ton_delay, MAX34451State, |
| MAX34451_NUM_MARGINED_PSU), |
| VMSTATE_UINT16_ARRAY(ton_max_fault_limit, MAX34451State, |
| MAX34451_NUM_MARGINED_PSU), |
| VMSTATE_UINT16_ARRAY(toff_delay, MAX34451State, |
| MAX34451_NUM_MARGINED_PSU), |
| VMSTATE_UINT8_ARRAY(status_mfr_specific, MAX34451State, |
| MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT64(mfr_location, MAX34451State), |
| VMSTATE_UINT64(mfr_date, MAX34451State), |
| VMSTATE_UINT64(mfr_serial, MAX34451State), |
| VMSTATE_UINT16(mfr_mode, MAX34451State), |
| VMSTATE_UINT32_ARRAY(psen_config, MAX34451State, |
| MAX34451_NUM_MARGINED_PSU), |
| VMSTATE_UINT16_ARRAY(vout_peak, MAX34451State, |
| MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT16_ARRAY(iout_peak, MAX34451State, |
| MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT16_ARRAY(temperature_peak, MAX34451State, |
| MAX34451_NUM_TEMP_DEVICES), |
| VMSTATE_UINT16_ARRAY(vout_min, MAX34451State, MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT16(nv_log_config, MAX34451State), |
| VMSTATE_UINT32_ARRAY(fault_response, MAX34451State, |
| MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT16(fault_retry, MAX34451State), |
| VMSTATE_UINT32(fault_log, MAX34451State), |
| VMSTATE_UINT32(time_count, MAX34451State), |
| VMSTATE_UINT16_ARRAY(margin_config, MAX34451State, |
| MAX34451_NUM_MARGINED_PSU), |
| VMSTATE_UINT16(fw_serial, MAX34451State), |
| VMSTATE_UINT16_ARRAY(iout_avg, MAX34451State, MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT16_ARRAY(channel_config, MAX34451State, |
| MAX34451_NUM_PWR_DEVICES), |
| VMSTATE_UINT16_ARRAY(ton_seq_max, MAX34451State, |
| MAX34451_NUM_MARGINED_PSU), |
| VMSTATE_UINT32_ARRAY(pwm_config, MAX34451State, |
| MAX34451_NUM_MARGINED_PSU), |
| VMSTATE_UINT32_ARRAY(seq_config, MAX34451State, |
| MAX34451_NUM_MARGINED_PSU), |
| VMSTATE_UINT16_ARRAY(temp_sensor_config, MAX34451State, |
| MAX34451_NUM_TEMP_DEVICES), |
| VMSTATE_UINT16(store_single, MAX34451State), |
| VMSTATE_UINT16(crc, MAX34451State), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static void max34451_init(Object *obj) |
| { |
| PMBusDevice *pmdev = PMBUS_DEVICE(obj); |
| uint64_t psu_flags = PB_HAS_VOUT | PB_HAS_IOUT | PB_HAS_VOUT_MODE | |
| PB_HAS_IOUT_GAIN; |
| |
| for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) { |
| pmbus_page_config(pmdev, i, psu_flags); |
| } |
| |
| for (int i = 0; i < MAX34451_NUM_MARGINED_PSU; i++) { |
| pmbus_page_config(pmdev, i, psu_flags | PB_HAS_VOUT_MARGIN); |
| } |
| |
| for (int i = 16; i < MAX34451_NUM_TEMP_DEVICES + 16; i++) { |
| pmbus_page_config(pmdev, i, PB_HAS_TEMPERATURE | PB_HAS_VOUT_MODE); |
| } |
| |
| /* get and set the voltage in millivolts, max is 32767 mV */ |
| for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) { |
| object_property_add(obj, "vout[*]", "uint16", |
| max34451_get, |
| max34451_set, NULL, &pmdev->pages[i].read_vout); |
| } |
| |
| /* |
| * get and set the temperature of the internal temperature sensor in |
| * centidegrees Celcius i.e.: 2500 -> 25.00 C, max is 327.67 C |
| */ |
| for (int i = 0; i < MAX34451_NUM_TEMP_DEVICES; i++) { |
| object_property_add(obj, "temperature[*]", "uint16", |
| max34451_get, |
| max34451_set, |
| NULL, |
| &pmdev->pages[i + 16].read_temperature_1); |
| } |
| |
| } |
| |
| static void max34451_class_init(ObjectClass *klass, void *data) |
| { |
| ResettableClass *rc = RESETTABLE_CLASS(klass); |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| PMBusDeviceClass *k = PMBUS_DEVICE_CLASS(klass); |
| dc->desc = "Maxim MAX34451 16-Channel V/I monitor"; |
| dc->vmsd = &vmstate_max34451; |
| k->write_data = max34451_write_data; |
| k->receive_byte = max34451_read_byte; |
| k->device_num_pages = MAX34451_NUM_PAGES; |
| rc->phases.exit = max34451_exit_reset; |
| } |
| |
| static const TypeInfo max34451_info = { |
| .name = TYPE_MAX34451, |
| .parent = TYPE_PMBUS_DEVICE, |
| .instance_size = sizeof(MAX34451State), |
| .instance_init = max34451_init, |
| .class_init = max34451_class_init, |
| }; |
| |
| static void max34451_register_types(void) |
| { |
| type_register_static(&max34451_info); |
| } |
| |
| type_init(max34451_register_types) |
