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qemu/include/hw/i2c/pmbus_device.h
Titus Rwantare 3746d5c15e hw/i2c: add support for PMBus 
QEMU has support for SMBus devices, and PMBus is a more specific
implementation of SMBus. The additions made in this commit makes it easier to
add new PMBus devices to QEMU.

https://pmbus.org/specification-archives/

Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Signed-off-by: Titus Rwantare <titusr@google.com>
Message-Id: <20210708172556.1868139-2-titusr@google.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2021-07-08 14:15:45 -05:00

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/*
* QEMU PMBus device emulation
*
* Copyright 2021 Google LLC
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef HW_PMBUS_DEVICE_H
#define HW_PMBUS_DEVICE_H
#include "qemu/bitops.h"
#include "hw/i2c/smbus_slave.h"
enum pmbus_registers {
PMBUS_PAGE = 0x00, /* R/W byte */
PMBUS_OPERATION = 0x01, /* R/W byte */
PMBUS_ON_OFF_CONFIG = 0x02, /* R/W byte */
PMBUS_CLEAR_FAULTS = 0x03, /* Send Byte */
PMBUS_PHASE = 0x04, /* R/W byte */
PMBUS_PAGE_PLUS_WRITE = 0x05, /* Block Write-only */
PMBUS_PAGE_PLUS_READ = 0x06, /* Block Read-only */
PMBUS_WRITE_PROTECT = 0x10, /* R/W byte */
PMBUS_STORE_DEFAULT_ALL = 0x11, /* Send Byte */
PMBUS_RESTORE_DEFAULT_ALL = 0x12, /* Send Byte */
PMBUS_STORE_DEFAULT_CODE = 0x13, /* Write-only Byte */
PMBUS_RESTORE_DEFAULT_CODE = 0x14, /* Write-only Byte */
PMBUS_STORE_USER_ALL = 0x15, /* Send Byte */
PMBUS_RESTORE_USER_ALL = 0x16, /* Send Byte */
PMBUS_STORE_USER_CODE = 0x17, /* Write-only Byte */
PMBUS_RESTORE_USER_CODE = 0x18, /* Write-only Byte */
PMBUS_CAPABILITY = 0x19, /* Read-Only byte */
PMBUS_QUERY = 0x1A, /* Write-Only */
PMBUS_SMBALERT_MASK = 0x1B, /* Block read, Word write */
PMBUS_VOUT_MODE = 0x20, /* R/W byte */
PMBUS_VOUT_COMMAND = 0x21, /* R/W word */
PMBUS_VOUT_TRIM = 0x22, /* R/W word */
PMBUS_VOUT_CAL_OFFSET = 0x23, /* R/W word */
PMBUS_VOUT_MAX = 0x24, /* R/W word */
PMBUS_VOUT_MARGIN_HIGH = 0x25, /* R/W word */
PMBUS_VOUT_MARGIN_LOW = 0x26, /* R/W word */
PMBUS_VOUT_TRANSITION_RATE = 0x27, /* R/W word */
PMBUS_VOUT_DROOP = 0x28, /* R/W word */
PMBUS_VOUT_SCALE_LOOP = 0x29, /* R/W word */
PMBUS_VOUT_SCALE_MONITOR = 0x2A, /* R/W word */
PMBUS_COEFFICIENTS = 0x30, /* Read-only block 5 bytes */
PMBUS_POUT_MAX = 0x31, /* R/W word */
PMBUS_MAX_DUTY = 0x32, /* R/W word */
PMBUS_FREQUENCY_SWITCH = 0x33, /* R/W word */
PMBUS_VIN_ON = 0x35, /* R/W word */
PMBUS_VIN_OFF = 0x36, /* R/W word */
PMBUS_INTERLEAVE = 0x37, /* R/W word */
PMBUS_IOUT_CAL_GAIN = 0x38, /* R/W word */
PMBUS_IOUT_CAL_OFFSET = 0x39, /* R/W word */
PMBUS_FAN_CONFIG_1_2 = 0x3A, /* R/W byte */
PMBUS_FAN_COMMAND_1 = 0x3B, /* R/W word */
PMBUS_FAN_COMMAND_2 = 0x3C, /* R/W word */
PMBUS_FAN_CONFIG_3_4 = 0x3D, /* R/W byte */
PMBUS_FAN_COMMAND_3 = 0x3E, /* R/W word */
PMBUS_FAN_COMMAND_4 = 0x3F, /* R/W word */
PMBUS_VOUT_OV_FAULT_LIMIT = 0x40, /* R/W word */
PMBUS_VOUT_OV_FAULT_RESPONSE = 0x41, /* R/W byte */
PMBUS_VOUT_OV_WARN_LIMIT = 0x42, /* R/W word */
PMBUS_VOUT_UV_WARN_LIMIT = 0x43, /* R/W word */
PMBUS_VOUT_UV_FAULT_LIMIT = 0x44, /* R/W word */
PMBUS_VOUT_UV_FAULT_RESPONSE = 0x45, /* R/W byte */
PMBUS_IOUT_OC_FAULT_LIMIT = 0x46, /* R/W word */
PMBUS_IOUT_OC_FAULT_RESPONSE = 0x47, /* R/W byte */
PMBUS_IOUT_OC_LV_FAULT_LIMIT = 0x48, /* R/W word */
PMBUS_IOUT_OC_LV_FAULT_RESPONSE = 0x49, /* R/W byte */
PMBUS_IOUT_OC_WARN_LIMIT = 0x4A, /* R/W word */
PMBUS_IOUT_UC_FAULT_LIMIT = 0x4B, /* R/W word */
PMBUS_IOUT_UC_FAULT_RESPONSE = 0x4C, /* R/W byte */
PMBUS_OT_FAULT_LIMIT = 0x4F, /* R/W word */
PMBUS_OT_FAULT_RESPONSE = 0x50, /* R/W byte */
PMBUS_OT_WARN_LIMIT = 0x51, /* R/W word */
PMBUS_UT_WARN_LIMIT = 0x52, /* R/W word */
PMBUS_UT_FAULT_LIMIT = 0x53, /* R/W word */
PMBUS_UT_FAULT_RESPONSE = 0x54, /* R/W byte */
PMBUS_VIN_OV_FAULT_LIMIT = 0x55, /* R/W word */
PMBUS_VIN_OV_FAULT_RESPONSE = 0x56, /* R/W byte */
PMBUS_VIN_OV_WARN_LIMIT = 0x57, /* R/W word */
PMBUS_VIN_UV_WARN_LIMIT = 0x58, /* R/W word */
PMBUS_VIN_UV_FAULT_LIMIT = 0x59, /* R/W word */
PMBUS_VIN_UV_FAULT_RESPONSE = 0x5A, /* R/W byte */
PMBUS_IIN_OC_FAULT_LIMIT = 0x5B, /* R/W word */
PMBUS_IIN_OC_FAULT_RESPONSE = 0x5C, /* R/W byte */
PMBUS_IIN_OC_WARN_LIMIT = 0x5D, /* R/W word */
PMBUS_POWER_GOOD_ON = 0x5E, /* R/W word */
PMBUS_POWER_GOOD_OFF = 0x5F, /* R/W word */
PMBUS_TON_DELAY = 0x60, /* R/W word */
PMBUS_TON_RISE = 0x61, /* R/W word */
PMBUS_TON_MAX_FAULT_LIMIT = 0x62, /* R/W word */
PMBUS_TON_MAX_FAULT_RESPONSE = 0x63, /* R/W byte */
PMBUS_TOFF_DELAY = 0x64, /* R/W word */
PMBUS_TOFF_FALL = 0x65, /* R/W word */
PMBUS_TOFF_MAX_WARN_LIMIT = 0x66, /* R/W word */
PMBUS_POUT_OP_FAULT_LIMIT = 0x68, /* R/W word */
PMBUS_POUT_OP_FAULT_RESPONSE = 0x69, /* R/W byte */
PMBUS_POUT_OP_WARN_LIMIT = 0x6A, /* R/W word */
PMBUS_PIN_OP_WARN_LIMIT = 0x6B, /* R/W word */
PMBUS_STATUS_BYTE = 0x78, /* R/W byte */
PMBUS_STATUS_WORD = 0x79, /* R/W word */
PMBUS_STATUS_VOUT = 0x7A, /* R/W byte */
PMBUS_STATUS_IOUT = 0x7B, /* R/W byte */
PMBUS_STATUS_INPUT = 0x7C, /* R/W byte */
PMBUS_STATUS_TEMPERATURE = 0x7D, /* R/W byte */
PMBUS_STATUS_CML = 0x7E, /* R/W byte */
PMBUS_STATUS_OTHER = 0x7F, /* R/W byte */
PMBUS_STATUS_MFR_SPECIFIC = 0x80, /* R/W byte */
PMBUS_STATUS_FANS_1_2 = 0x81, /* R/W byte */
PMBUS_STATUS_FANS_3_4 = 0x82, /* R/W byte */
PMBUS_READ_EIN = 0x86, /* Read-Only block 5 bytes */
PMBUS_READ_EOUT = 0x87, /* Read-Only block 5 bytes */
PMBUS_READ_VIN = 0x88, /* Read-Only word */
PMBUS_READ_IIN = 0x89, /* Read-Only word */
PMBUS_READ_VCAP = 0x8A, /* Read-Only word */
PMBUS_READ_VOUT = 0x8B, /* Read-Only word */
PMBUS_READ_IOUT = 0x8C, /* Read-Only word */
PMBUS_READ_TEMPERATURE_1 = 0x8D, /* Read-Only word */
PMBUS_READ_TEMPERATURE_2 = 0x8E, /* Read-Only word */
PMBUS_READ_TEMPERATURE_3 = 0x8F, /* Read-Only word */
PMBUS_READ_FAN_SPEED_1 = 0x90, /* Read-Only word */
PMBUS_READ_FAN_SPEED_2 = 0x91, /* Read-Only word */
PMBUS_READ_FAN_SPEED_3 = 0x92, /* Read-Only word */
PMBUS_READ_FAN_SPEED_4 = 0x93, /* Read-Only word */
PMBUS_READ_DUTY_CYCLE = 0x94, /* Read-Only word */
PMBUS_READ_FREQUENCY = 0x95, /* Read-Only word */
PMBUS_READ_POUT = 0x96, /* Read-Only word */
PMBUS_READ_PIN = 0x97, /* Read-Only word */
PMBUS_REVISION = 0x98, /* Read-Only byte */
PMBUS_MFR_ID = 0x99, /* R/W block */
PMBUS_MFR_MODEL = 0x9A, /* R/W block */
PMBUS_MFR_REVISION = 0x9B, /* R/W block */
PMBUS_MFR_LOCATION = 0x9C, /* R/W block */
PMBUS_MFR_DATE = 0x9D, /* R/W block */
PMBUS_MFR_SERIAL = 0x9E, /* R/W block */
PMBUS_APP_PROFILE_SUPPORT = 0x9F, /* Read-Only block-read */
PMBUS_MFR_VIN_MIN = 0xA0, /* Read-Only word */
PMBUS_MFR_VIN_MAX = 0xA1, /* Read-Only word */
PMBUS_MFR_IIN_MAX = 0xA2, /* Read-Only word */
PMBUS_MFR_PIN_MAX = 0xA3, /* Read-Only word */
PMBUS_MFR_VOUT_MIN = 0xA4, /* Read-Only word */
PMBUS_MFR_VOUT_MAX = 0xA5, /* Read-Only word */
PMBUS_MFR_IOUT_MAX = 0xA6, /* Read-Only word */
PMBUS_MFR_POUT_MAX = 0xA7, /* Read-Only word */
PMBUS_MFR_TAMBIENT_MAX = 0xA8, /* Read-Only word */
PMBUS_MFR_TAMBIENT_MIN = 0xA9, /* Read-Only word */
PMBUS_MFR_EFFICIENCY_LL = 0xAA, /* Read-Only block 14 bytes */
PMBUS_MFR_EFFICIENCY_HL = 0xAB, /* Read-Only block 14 bytes */
PMBUS_MFR_PIN_ACCURACY = 0xAC, /* Read-Only byte */
PMBUS_IC_DEVICE_ID = 0xAD, /* Read-Only block-read */
PMBUS_IC_DEVICE_REV = 0xAE, /* Read-Only block-read */
PMBUS_MFR_MAX_TEMP_1 = 0xC0, /* R/W word */
PMBUS_MFR_MAX_TEMP_2 = 0xC1, /* R/W word */
PMBUS_MFR_MAX_TEMP_3 = 0xC2, /* R/W word */
};
/* STATUS_WORD */
#define PB_STATUS_VOUT BIT(15)
#define PB_STATUS_IOUT_POUT BIT(14)
#define PB_STATUS_INPUT BIT(13)
#define PB_STATUS_WORD_MFR BIT(12)
#define PB_STATUS_POWER_GOOD_N BIT(11)
#define PB_STATUS_FAN BIT(10)
#define PB_STATUS_OTHER BIT(9)
#define PB_STATUS_UNKNOWN BIT(8)
/* STATUS_BYTE */
#define PB_STATUS_BUSY BIT(7)
#define PB_STATUS_OFF BIT(6)
#define PB_STATUS_VOUT_OV BIT(5)
#define PB_STATUS_IOUT_OC BIT(4)
#define PB_STATUS_VIN_UV BIT(3)
#define PB_STATUS_TEMPERATURE BIT(2)
#define PB_STATUS_CML BIT(1)
#define PB_STATUS_NONE_ABOVE BIT(0)
/* STATUS_VOUT */
#define PB_STATUS_VOUT_OV_FAULT BIT(7) /* Output Overvoltage Fault */
#define PB_STATUS_VOUT_OV_WARN BIT(6) /* Output Overvoltage Warning */
#define PB_STATUS_VOUT_UV_WARN BIT(5) /* Output Undervoltage Warning */
#define PB_STATUS_VOUT_UV_FAULT BIT(4) /* Output Undervoltage Fault */
#define PB_STATUS_VOUT_MAX BIT(3)
#define PB_STATUS_VOUT_TON_MAX_FAULT BIT(2)
#define PB_STATUS_VOUT_TOFF_MAX_WARN BIT(1)
/* STATUS_IOUT */
#define PB_STATUS_IOUT_OC_FAULT BIT(7) /* Output Overcurrent Fault */
#define PB_STATUS_IOUT_OC_LV_FAULT BIT(6) /* Output OC And Low Voltage Fault */
#define PB_STATUS_IOUT_OC_WARN BIT(5) /* Output Overcurrent Warning */
#define PB_STATUS_IOUT_UC_FAULT BIT(4) /* Output Undercurrent Fault */
#define PB_STATUS_CURR_SHARE BIT(3) /* Current Share Fault */
#define PB_STATUS_PWR_LIM_MODE BIT(2) /* In Power Limiting Mode */
#define PB_STATUS_POUT_OP_FAULT BIT(1) /* Output Overpower Fault */
#define PB_STATUS_POUT_OP_WARN BIT(0) /* Output Overpower Warning */
/* STATUS_INPUT */
#define PB_STATUS_INPUT_VIN_OV_FAULT BIT(7) /* Input Overvoltage Fault */
#define PB_STATUS_INPUT_VIN_OV_WARN BIT(6) /* Input Overvoltage Warning */
#define PB_STATUS_INPUT_VIN_UV_WARN BIT(5) /* Input Undervoltage Warning */
#define PB_STATUS_INPUT_VIN_UV_FAULT BIT(4) /* Input Undervoltage Fault */
#define PB_STATUS_INPUT_IIN_OC_FAULT BIT(2) /* Input Overcurrent Fault */
#define PB_STATUS_INPUT_IIN_OC_WARN BIT(1) /* Input Overcurrent Warning */
#define PB_STATUS_INPUT_PIN_OP_WARN BIT(0) /* Input Overpower Warning */
/* STATUS_TEMPERATURE */
#define PB_STATUS_OT_FAULT BIT(7) /* Overtemperature Fault */
#define PB_STATUS_OT_WARN BIT(6) /* Overtemperature Warning */
#define PB_STATUS_UT_WARN BIT(5) /* Undertemperature Warning */
#define PB_STATUS_UT_FAULT BIT(4) /* Undertemperature Fault */
/* STATUS_CML */
#define PB_CML_FAULT_INVALID_CMD BIT(7) /* Invalid/Unsupported Command */
#define PB_CML_FAULT_INVALID_DATA BIT(6) /* Invalid/Unsupported Data */
#define PB_CML_FAULT_PEC BIT(5) /* Packet Error Check Failed */
#define PB_CML_FAULT_MEMORY BIT(4) /* Memory Fault Detected */
#define PB_CML_FAULT_PROCESSOR BIT(3) /* Processor Fault Detected */
#define PB_CML_FAULT_OTHER_COMM BIT(1) /* Other communication fault */
#define PB_CML_FAULT_OTHER_MEM_LOGIC BIT(0) /* Other Memory Or Logic Fault */
/* OPERATION*/
#define PB_OP_ON BIT(7) /* PSU is switched on */
#define PB_OP_MARGIN_HIGH BIT(5) /* PSU vout is set to margin high */
#define PB_OP_MARGIN_LOW BIT(4) /* PSU vout is set to margin low */
/* PAGES */
#define PB_MAX_PAGES 0x1F
#define PB_ALL_PAGES 0xFF
#define TYPE_PMBUS_DEVICE "pmbus-device"
OBJECT_DECLARE_TYPE(PMBusDevice, PMBusDeviceClass,
PMBUS_DEVICE)
/* flags */
#define PB_HAS_COEFFICIENTS BIT_ULL(9)
#define PB_HAS_VIN BIT_ULL(10)
#define PB_HAS_VOUT BIT_ULL(11)
#define PB_HAS_VOUT_MARGIN BIT_ULL(12)
#define PB_HAS_VIN_RATING BIT_ULL(13)
#define PB_HAS_VOUT_RATING BIT_ULL(14)
#define PB_HAS_VOUT_MODE BIT_ULL(15)
#define PB_HAS_IOUT BIT_ULL(21)
#define PB_HAS_IIN BIT_ULL(22)
#define PB_HAS_IOUT_RATING BIT_ULL(23)
#define PB_HAS_IIN_RATING BIT_ULL(24)
#define PB_HAS_IOUT_GAIN BIT_ULL(25)
#define PB_HAS_POUT BIT_ULL(30)
#define PB_HAS_PIN BIT_ULL(31)
#define PB_HAS_EIN BIT_ULL(32)
#define PB_HAS_EOUT BIT_ULL(33)
#define PB_HAS_POUT_RATING BIT_ULL(34)
#define PB_HAS_PIN_RATING BIT_ULL(35)
#define PB_HAS_TEMPERATURE BIT_ULL(40)
#define PB_HAS_TEMP2 BIT_ULL(41)
#define PB_HAS_TEMP3 BIT_ULL(42)
#define PB_HAS_TEMP_RATING BIT_ULL(43)
#define PB_HAS_MFR_INFO BIT_ULL(50)
struct PMBusDeviceClass {
SMBusDeviceClass parent_class;
uint8_t device_num_pages;
/**
* Implement quick_cmd, receive byte, and write_data to support non-standard
* PMBus functionality
*/
void (*quick_cmd)(PMBusDevice *dev, uint8_t read);
int (*write_data)(PMBusDevice *dev, const uint8_t *buf, uint8_t len);
uint8_t (*receive_byte)(PMBusDevice *dev);
};
/*
* According to the spec, each page may offer the full range of PMBus commands
* available for each output or non-PMBus device.
* Therefore, we can't assume that any registers will always be the same across
* all pages.
* The page 0xFF is intended for writes to all pages
*/
typedef struct PMBusPage {
uint64_t page_flags;
uint8_t page; /* R/W byte */
uint8_t operation; /* R/W byte */
uint8_t on_off_config; /* R/W byte */
uint8_t write_protect; /* R/W byte */
uint8_t phase; /* R/W byte */
uint8_t vout_mode; /* R/W byte */
uint16_t vout_command; /* R/W word */
uint16_t vout_trim; /* R/W word */
uint16_t vout_cal_offset; /* R/W word */
uint16_t vout_max; /* R/W word */
uint16_t vout_margin_high; /* R/W word */
uint16_t vout_margin_low; /* R/W word */
uint16_t vout_transition_rate; /* R/W word */
uint16_t vout_droop; /* R/W word */
uint16_t vout_scale_loop; /* R/W word */
uint16_t vout_scale_monitor; /* R/W word */
uint8_t coefficients[5]; /* Read-only block 5 bytes */
uint16_t pout_max; /* R/W word */
uint16_t max_duty; /* R/W word */
uint16_t frequency_switch; /* R/W word */
uint16_t vin_on; /* R/W word */
uint16_t vin_off; /* R/W word */
uint16_t iout_cal_gain; /* R/W word */
uint16_t iout_cal_offset; /* R/W word */
uint8_t fan_config_1_2; /* R/W byte */
uint16_t fan_command_1; /* R/W word */
uint16_t fan_command_2; /* R/W word */
uint8_t fan_config_3_4; /* R/W byte */
uint16_t fan_command_3; /* R/W word */
uint16_t fan_command_4; /* R/W word */
uint16_t vout_ov_fault_limit; /* R/W word */
uint8_t vout_ov_fault_response; /* R/W byte */
uint16_t vout_ov_warn_limit; /* R/W word */
uint16_t vout_uv_warn_limit; /* R/W word */
uint16_t vout_uv_fault_limit; /* R/W word */
uint8_t vout_uv_fault_response; /* R/W byte */
uint16_t iout_oc_fault_limit; /* R/W word */
uint8_t iout_oc_fault_response; /* R/W byte */
uint16_t iout_oc_lv_fault_limit; /* R/W word */
uint8_t iout_oc_lv_fault_response; /* R/W byte */
uint16_t iout_oc_warn_limit; /* R/W word */
uint16_t iout_uc_fault_limit; /* R/W word */
uint8_t iout_uc_fault_response; /* R/W byte */
uint16_t ot_fault_limit; /* R/W word */
uint8_t ot_fault_response; /* R/W byte */
uint16_t ot_warn_limit; /* R/W word */
uint16_t ut_warn_limit; /* R/W word */
uint16_t ut_fault_limit; /* R/W word */
uint8_t ut_fault_response; /* R/W byte */
uint16_t vin_ov_fault_limit; /* R/W word */
uint8_t vin_ov_fault_response; /* R/W byte */
uint16_t vin_ov_warn_limit; /* R/W word */
uint16_t vin_uv_warn_limit; /* R/W word */
uint16_t vin_uv_fault_limit; /* R/W word */
uint8_t vin_uv_fault_response; /* R/W byte */
uint16_t iin_oc_fault_limit; /* R/W word */
uint8_t iin_oc_fault_response; /* R/W byte */
uint16_t iin_oc_warn_limit; /* R/W word */
uint16_t power_good_on; /* R/W word */
uint16_t power_good_off; /* R/W word */
uint16_t ton_delay; /* R/W word */
uint16_t ton_rise; /* R/W word */
uint16_t ton_max_fault_limit; /* R/W word */
uint8_t ton_max_fault_response; /* R/W byte */
uint16_t toff_delay; /* R/W word */
uint16_t toff_fall; /* R/W word */
uint16_t toff_max_warn_limit; /* R/W word */
uint16_t pout_op_fault_limit; /* R/W word */
uint8_t pout_op_fault_response; /* R/W byte */
uint16_t pout_op_warn_limit; /* R/W word */
uint16_t pin_op_warn_limit; /* R/W word */
uint16_t status_word; /* R/W word */
uint8_t status_vout; /* R/W byte */
uint8_t status_iout; /* R/W byte */
uint8_t status_input; /* R/W byte */
uint8_t status_temperature; /* R/W byte */
uint8_t status_cml; /* R/W byte */
uint8_t status_other; /* R/W byte */
uint8_t status_mfr_specific; /* R/W byte */
uint8_t status_fans_1_2; /* R/W byte */
uint8_t status_fans_3_4; /* R/W byte */
uint8_t read_ein[5]; /* Read-Only block 5 bytes */
uint8_t read_eout[5]; /* Read-Only block 5 bytes */
uint16_t read_vin; /* Read-Only word */
uint16_t read_iin; /* Read-Only word */
uint16_t read_vcap; /* Read-Only word */
uint16_t read_vout; /* Read-Only word */
uint16_t read_iout; /* Read-Only word */
uint16_t read_temperature_1; /* Read-Only word */
uint16_t read_temperature_2; /* Read-Only word */
uint16_t read_temperature_3; /* Read-Only word */
uint16_t read_fan_speed_1; /* Read-Only word */
uint16_t read_fan_speed_2; /* Read-Only word */
uint16_t read_fan_speed_3; /* Read-Only word */
uint16_t read_fan_speed_4; /* Read-Only word */
uint16_t read_duty_cycle; /* Read-Only word */
uint16_t read_frequency; /* Read-Only word */
uint16_t read_pout; /* Read-Only word */
uint16_t read_pin; /* Read-Only word */
uint8_t revision; /* Read-Only byte */
const char *mfr_id; /* R/W block */
const char *mfr_model; /* R/W block */
const char *mfr_revision; /* R/W block */
const char *mfr_location; /* R/W block */
const char *mfr_date; /* R/W block */
const char *mfr_serial; /* R/W block */
const char *app_profile_support; /* Read-Only block-read */
uint16_t mfr_vin_min; /* Read-Only word */
uint16_t mfr_vin_max; /* Read-Only word */
uint16_t mfr_iin_max; /* Read-Only word */
uint16_t mfr_pin_max; /* Read-Only word */
uint16_t mfr_vout_min; /* Read-Only word */
uint16_t mfr_vout_max; /* Read-Only word */
uint16_t mfr_iout_max; /* Read-Only word */
uint16_t mfr_pout_max; /* Read-Only word */
uint16_t mfr_tambient_max; /* Read-Only word */
uint16_t mfr_tambient_min; /* Read-Only word */
uint8_t mfr_efficiency_ll[14]; /* Read-Only block 14 bytes */
uint8_t mfr_efficiency_hl[14]; /* Read-Only block 14 bytes */
uint8_t mfr_pin_accuracy; /* Read-Only byte */
uint16_t mfr_max_temp_1; /* R/W word */
uint16_t mfr_max_temp_2; /* R/W word */
uint16_t mfr_max_temp_3; /* R/W word */
} PMBusPage;
/* State */
struct PMBusDevice {
SMBusDevice smb;
uint8_t num_pages;
uint8_t code;
uint8_t page;
/*
* PMBus registers are stored in a PMBusPage structure allocated by
* calling pmbus_pages_alloc()
*/
PMBusPage *pages;
uint8_t capability;
int32_t in_buf_len;
uint8_t *in_buf;
int32_t out_buf_len;
uint8_t out_buf[SMBUS_DATA_MAX_LEN];
};
/**
* Direct mode coefficients
* @var m - mantissa
* @var b - offset
* @var R - exponent
*/
typedef struct PMBusCoefficients {
int32_t m; /* mantissa */
int64_t b; /* offset */
int32_t R; /* exponent */
} PMBusCoefficients;
/**
* Convert sensor values to direct mode format
*
* Y = (m * x - b) * 10^R
*
* @return uint32_t
*/
uint16_t pmbus_data2direct_mode(PMBusCoefficients c, uint32_t value);
/**
* Convert direct mode formatted data into sensor reading
*
* X = (Y * 10^-R - b) / m
*
* @return uint32_t
*/
uint32_t pmbus_direct_mode2data(PMBusCoefficients c, uint16_t value);
/**
* @brief Send a block of data over PMBus
* Assumes that the bytes in the block are already ordered correctly,
* also assumes the length has been prepended to the block if necessary
* | low_byte | ... | high_byte |
* @param state - maintains state of the PMBus device
* @param data - byte array to be sent by device
* @param len - number
*/
void pmbus_send(PMBusDevice *state, const uint8_t *data, uint16_t len);
void pmbus_send8(PMBusDevice *state, uint8_t data);
void pmbus_send16(PMBusDevice *state, uint16_t data);
void pmbus_send32(PMBusDevice *state, uint32_t data);
void pmbus_send64(PMBusDevice *state, uint64_t data);
/**
* @brief Send a string over PMBus with length prepended.
* Length is calculated using str_len()
*/
void pmbus_send_string(PMBusDevice *state, const char *data);
/**
* @brief Receive data over PMBus
* These methods help track how much data is being received over PMBus
* Log to GUEST_ERROR if too much or too little is sent.
*/
uint8_t pmbus_receive8(PMBusDevice *pmdev);
uint16_t pmbus_receive16(PMBusDevice *pmdev);
uint32_t pmbus_receive32(PMBusDevice *pmdev);
uint64_t pmbus_receive64(PMBusDevice *pmdev);
/**
* PMBus page config must be called before any page is first used.
* It will allocate memory for all the pages if needed.
* Passed in flags overwrite existing flags if any.
* @param page_index the page to which the flags are applied, setting page_index
* to 0xFF applies the passed in flags to all pages.
* @param flags
*/
int pmbus_page_config(PMBusDevice *pmdev, uint8_t page_index, uint64_t flags);
/**
* Update the status registers when sensor values change.
* Useful if modifying sensors through qmp, this way status registers get
* updated
*/
void pmbus_check_limits(PMBusDevice *pmdev);
extern const VMStateDescription vmstate_pmbus_device;
#define VMSTATE_PMBUS_DEVICE(_field, _state) { \
.name = (stringify(_field)), \
.size = sizeof(PMBusDevice), \
.vmsd = &vmstate_pmbus_device, \
.flags = VMS_STRUCT, \
.offset = vmstate_offset_value(_state, _field, PMBusDevice), \
}
#endif
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