blob: 6f1044c744fcb98d9c160ee2668535f160c0b2c4 [file] [log] [blame]
#pragma once
#include "pmbus.hpp"
#include "types.hpp"
#include "util.hpp"
#include "utility.hpp"
#include <gpiod.hpp>
#include <sdbusplus/bus/match.hpp>
#include <filesystem>
#include <stdexcept>
namespace phosphor::power::psu
{
#if IBM_VPD
// PMBus device driver "file name" to read for CCIN value.
constexpr auto CCIN = "ccin";
constexpr auto PART_NUMBER = "part_number";
constexpr auto FRU_NUMBER = "fru";
constexpr auto SERIAL_HEADER = "header";
constexpr auto SERIAL_NUMBER = "serial_number";
constexpr auto FW_VERSION = "fw_version";
// The D-Bus property name to update with the CCIN value.
constexpr auto MODEL_PROP = "Model";
constexpr auto PN_PROP = "PartNumber";
constexpr auto SPARE_PN_PROP = "SparePartNumber";
constexpr auto SN_PROP = "SerialNumber";
constexpr auto VERSION_PROP = "Version";
// ipzVPD Keyword sizes
static constexpr auto FL_KW_SIZE = 20;
#endif
constexpr auto LOG_LIMIT = 3;
constexpr auto DEGLITCH_LIMIT = 3;
/**
* @class PowerSupply
* Represents a PMBus power supply device.
*/
class PowerSupply
{
public:
PowerSupply() = delete;
PowerSupply(const PowerSupply&) = delete;
PowerSupply(PowerSupply&&) = delete;
PowerSupply& operator=(const PowerSupply&) = delete;
PowerSupply& operator=(PowerSupply&&) = delete;
~PowerSupply() = default;
/**
* @param[in] invpath - String for inventory path to use
* @param[in] i2cbus - The bus number this power supply is on
* @param[in] i2caddr - The 16-bit I2C address of the power supply
* @param[in] gpioLineName - The gpio-line-name to read for presence. See
* https://github.com/openbmc/docs/blob/master/designs/device-tree-gpio-naming.md
*/
PowerSupply(sdbusplus::bus::bus& bus, const std::string& invpath,
std::uint8_t i2cbus, const std::uint16_t i2caddr,
const std::string& gpioLineName);
phosphor::pmbus::PMBusBase& getPMBus()
{
return *pmbusIntf;
}
GPIOInterfaceBase* getPresenceGPIO()
{
return presenceGPIO.get();
}
std::string getPresenceGPIOName() const
{
if (presenceGPIO != nullptr)
{
return presenceGPIO->getName();
}
else
{
return std::string();
}
}
/**
* Power supply specific function to analyze for faults/errors.
*
* Various PMBus status bits will be checked for fault conditions.
* If a certain fault bits are on, the appropriate error will be
* committed.
*/
void analyze();
/**
* Write PMBus ON_OFF_CONFIG
*
* This function will be called to cause the PMBus device driver to send the
* ON_OFF_CONFIG command. Takes one byte of data.
*
* @param[in] data - The ON_OFF_CONFIG data byte mask.
*/
void onOffConfig(uint8_t data);
/**
* Clears all the member variables that indicate if a fault bit was seen as
* on in the STATUS_WORD or STATUS_MFR_SPECIFIC response.
*/
void clearFaultFlags()
{
inputFault = 0;
mfrFault = 0;
statusMFR = 0;
vinUVFault = 0;
cmlFault = 0;
voutOVFault = 0;
ioutOCFault = 0;
voutUVFault = 0;
fanFault = 0;
tempFault = 0;
pgoodFault = 0;
psKillFault = 0;
ps12VcsFault = 0;
psCS12VFault = 0;
}
/**
* @brief Function to specifically clear VIN_UV/OFF fault(s).
*
* The PMBus HWMON device driver has various alarm "files" to read out of
* sysfs. Reading those files will indicate if various alarms are active or
* not, and then specifically clear those faults that go with that alarm.
*
* The VIN_UV fault, indicated in STATUS_INPUT, goes with in1_lcrit_alarm.
* When a VIN_UV fault occurs, the "Unit Off For Insufficient Input Voltage"
* may also be active. Reading in1_lcrit_alarm should clear both fault bits,
* resulting in the corresponding fault bits in STATUS_WORD also clearing.
*
* See: https://www.kernel.org/doc/html/latest/hwmon/pmbus.html
*/
void clearVinUVFault();
/**
* Write PMBus CLEAR_FAULTS
*
* This function will be called in various situations in order to clear
* any fault status bits that may have been set, in order to start over
* with a clean state. Presence changes and power state changes will
* want to clear any faults logged.
*/
void clearFaults();
/**
* @brief Adds properties to the inventory.
*
* Reads the values from the device and writes them to the
* associated power supply D-Bus inventory object.
*
* This needs to be done on startup, and each time the presence
* state changes.
*
* Properties added:
* - Serial Number
* - Part Number
* - CCIN (Customer Card Identification Number) - added as the Model
* - Firmware version
*/
void updateInventory();
/**
* @brief Accessor function to indicate present status
*/
bool isPresent() const
{
return present;
}
/**
* @brief Returns the last read value from STATUS_WORD.
*/
uint64_t getStatusWord() const
{
return statusWord;
}
/**
* @brief Returns the last read value from STATUS_INPUT.
*/
uint64_t getStatusInput() const
{
return statusInput;
}
/**
* @brief Returns the last read value from STATUS_MFR.
*/
uint64_t getMFRFault() const
{
return statusMFR;
}
/**
* @brief Returns the last read value from STATUS_CML.
*/
uint64_t getStatusCML() const
{
return statusCML;
}
/**
* @brief Returns the last read value from STATUS_VOUT.
*/
uint64_t getStatusVout() const
{
return statusVout;
}
/**
* @brief Returns the last value read from STATUS_IOUT.
*/
uint64_t getStatusIout() const
{
return statusIout;
}
/**
* @brief Returns the last value read from STATUS_FANS_1_2.
*/
uint64_t getStatusFans12() const
{
return statusFans12;
}
/**
* @brief Returns the last value read from STATUS_TEMPERATURE.
*/
uint64_t getStatusTemperature() const
{
return statusTemperature;
}
/**
* @brief Returns true if a fault was found.
*/
bool isFaulted() const
{
return (hasCommFault() || (vinUVFault >= DEGLITCH_LIMIT) ||
(inputFault >= DEGLITCH_LIMIT) ||
(voutOVFault >= DEGLITCH_LIMIT) ||
(ioutOCFault >= DEGLITCH_LIMIT) ||
(voutUVFault >= DEGLITCH_LIMIT) ||
(fanFault >= DEGLITCH_LIMIT) || (tempFault >= DEGLITCH_LIMIT) ||
(pgoodFault >= DEGLITCH_LIMIT) || (mfrFault >= DEGLITCH_LIMIT));
}
/**
* @brief Return whether a fault has been logged for this power supply
*/
bool isFaultLogged() const
{
return faultLogged;
}
/**
* @brief Called when a fault for this power supply has been logged.
*/
void setFaultLogged()
{
faultLogged = true;
}
/**
* @brief Returns true if INPUT fault occurred.
*/
bool hasInputFault() const
{
return (inputFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if MFRSPECIFIC occurred.
*/
bool hasMFRFault() const
{
return (mfrFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if VIN_UV_FAULT occurred.
*/
bool hasVINUVFault() const
{
return (vinUVFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if VOUT_OV_FAULT occurred.
*/
bool hasVoutOVFault() const
{
return (voutOVFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if IOUT_OC fault occurred (bit 4 STATUS_BYTE).
*/
bool hasIoutOCFault() const
{
return (ioutOCFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if VOUT_UV_FAULT occurred.
*/
bool hasVoutUVFault() const
{
return (voutUVFault >= DEGLITCH_LIMIT);
}
/**
*@brief Returns true if fan fault occurred.
*/
bool hasFanFault() const
{
return (fanFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if TEMPERATURE fault occurred.
*/
bool hasTempFault() const
{
return (tempFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if there is a PGood fault (PGOOD# inactive, or OFF
* bit on).
*/
bool hasPgoodFault() const
{
return (pgoodFault >= DEGLITCH_LIMIT);
}
/**
* @brief Return true if there is a PS_Kill fault.
*/
bool hasPSKillFault() const
{
return (psKillFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if there is a 12Vcs (standy power) fault.
*/
bool hasPS12VcsFault() const
{
return (ps12VcsFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns true if there is a 12V current-share fault.
*/
bool hasPSCS12VFault() const
{
return (psCS12VFault >= DEGLITCH_LIMIT);
}
/**
* @brief Returns the device path
*
* This can be used for error call outs.
* Example: /sys/bus/i2c/devices/3-0068
*/
const std::string getDevicePath() const
{
return pmbusIntf->path();
}
/**
* @brief Returns this power supply's inventory path.
*
* This can be used for error call outs.
* Example:
* /xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply1
*/
const std::string& getInventoryPath() const
{
return inventoryPath;
}
/**
* @brief Returns the short name (last part of inventoryPath).
*/
const std::string& getShortName() const
{
return shortName;
}
/**
* @brief Returns the firmware revision version read from the power supply
*/
const std::string& getFWVersion() const
{
return fwVersion;
}
/**
* @brief Returns the model name of the power supply
*/
const std::string& getModelName() const
{
return modelName;
}
/** @brief Returns true if the number of failed reads exceeds limit
* TODO: or CML bit on.
*/
bool hasCommFault() const
{
return ((readFail >= LOG_LIMIT) || (cmlFault >= DEGLITCH_LIMIT));
}
/**
* @brief Reads the pmbus input voltage and returns that actual voltage
* reading and the calculated input voltage based on thresholds.
* @param[out] actualInputVoltage - The actual voltage reading, in Volts.
* @param[out] inputVoltage - A rounded up/down value of the actual input
* voltage based on thresholds, in Volts.
*/
void getInputVoltage(double& actualInputVoltage, int& inputVoltage) const;
/**
* @brief Check if the PS is considered to be available or not
*
* It is unavailable if any of:
* - not present
* - input fault active
* - Vin UV fault active
* - PS KILL fault active
* - Iout OC fault active
*
* Other faults will, through creating error logs with callouts, already
* be setting the Functional property to false.
*
* On changes, the Available property is updated in the inventory.
*/
void checkAvailability();
private:
/** @brief systemd bus member */
sdbusplus::bus::bus& bus;
/** @brief Will be updated to the latest/lastvalue read from STATUS_WORD.*/
uint64_t statusWord = 0;
/** @brief Will be set to the last read value of STATUS_WORD. */
uint64_t statusWordOld = 0;
/** @brief Will be updated to the latest/lastvalue read from STATUS_INPUT.*/
uint64_t statusInput = 0;
/** @brief Will be updated to the latest/lastvalue read from STATUS_MFR.*/
uint64_t statusMFR = 0;
/** @brief Will be updated to the latest/last value read from STATUS_CML.*/
uint64_t statusCML = 0;
/** @brief Will be updated to the latest/last value read from STATUS_VOUT.*/
uint64_t statusVout = 0;
/** @brief Will be updated to the latest/last value read from STATUS_IOUT.*/
uint64_t statusIout = 0;
/** @brief Will be updated to the latest/last value read from
* STATUS_FANS_1_2. */
uint64_t statusFans12 = 0;
/** @brief Will be updated to the latest/last value read from
* STATUS_TEMPERATURE.*/
uint64_t statusTemperature = 0;
/** @brief Will be updated with latest converted value read from READ_VIN */
int inputVoltage = phosphor::pmbus::in_input::VIN_VOLTAGE_0;
/** @brief Will be updated with the actual voltage last read from READ_VIN
*/
double actualInputVoltage = 0;
/** @brief True if an error for a fault has already been logged. */
bool faultLogged = false;
/** @brief Incremented if bit 1 of STATUS_WORD low byte is on.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t cmlFault = 0;
/** @brief Incremented if bit 5 of STATUS_WORD high byte is on.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t inputFault = 0;
/** @brief Incremented if bit 4 of STATUS_WORD high byte is on.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t mfrFault = 0;
/** @brief Incremented if bit 3 of STATUS_WORD low byte is on.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t vinUVFault = 0;
/** @brief Incremented if bit 5 of STATUS_WORD low byte is on.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t voutOVFault = 0;
/** @brief Incremented if bit 4 of STATUS_WORD low byte is on.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t ioutOCFault = 0;
/** @brief Incremented if bit 7 of STATUS_WORD high byte is on and bit 5
* (VOUT_OV) of low byte is off.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t voutUVFault = 0;
/** @brief Incremented if FANS fault/warn bit on in STATUS_WORD.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t fanFault = 0;
/** @brief Incremented if bit 2 of STATUS_WORD low byte is on.
*
* Considered faulted if reaches DEGLITCH_LIMIT. */
size_t tempFault = 0;
/**
* @brief Incremented if bit 11 or 6 of STATUS_WORD is on. PGOOD# is
* inactive, or the unit is off.
*
* Considered faulted if reaches DEGLITCH_LIMIT.
*/
size_t pgoodFault = 0;
/**
* @brief Power Supply Kill fault.
*
* Incremented based on bits in STATUS_MFR_SPECIFIC. IBM power supplies use
* bit 4 to indicate this fault. Considered faulted if it reaches
* DEGLITCH_LIMIT.
*/
size_t psKillFault = 0;
/**
* @brief Power Supply 12Vcs fault (standby power).
*
* Incremented based on bits in STATUS_MFR_SPECIFIC. IBM power supplies use
* bit 6 to indicate this fault. Considered faulted if it reaches
* DEGLITCH_LIMIT.
*/
size_t ps12VcsFault = 0;
/**
* @brief Power Supply Current-Share fault in 12V domain.
*
* Incremented based on bits in STATUS_MFR_SPECIFIC. IBM power supplies use
* bit 7 to indicate this fault. Considered faulted if it reaches
* DEGLITCH_LIMIT.
*/
size_t psCS12VFault = 0;
/** @brief Count of the number of read failures. */
size_t readFail = 0;
/**
* @brief Examine STATUS_WORD for CML (communication, memory, logic fault).
*/
void analyzeCMLFault();
/**
* @brief Examine STATUS_WORD for INPUT bit on.
*
* "An input voltage, input current, or input power fault or warning has
* occurred."
*/
void analyzeInputFault();
/**
* @brief Examine STATUS_WORD for VOUT being set.
*
* If VOUT is on, "An output voltage fault or warning has occurred.", and
* VOUT_OV_FAULT is on, there is an output over-voltage fault.
*/
void analyzeVoutOVFault();
/*
* @brief Examine STATUS_WORD value read for IOUT_OC_FAULT.
*
* "An output overcurrent fault has occurred." If it is on, and fault not
* set, trace STATUS_WORD, STATUS_MFR_SPECIFIC, and STATUS_IOUT values.
*/
void analyzeIoutOCFault();
/**
* @brief Examines STATUS_WORD value read to see if there is a UV fault.
*
* Checks if the VOUT bit is on, indicating "An output voltage fault or
* warning has occurred", if it is on, but VOUT_OV_FAULT is off, it is
* determined to be an indication of an output under-voltage fault.
*/
void analyzeVoutUVFault();
/**
* @brief Examine STATUS_WORD for the fan fault/warning bit.
*
* If fanFault is not on, trace that the bit now came on, include
* STATUS_WORD, STATUS_MFR_SPECIFIC, and STATUS_FANS_1_2 values as well, to
* help with understanding what may have caused it to be set.
*/
void analyzeFanFault();
/**
* @brief Examine STATUS_WORD for temperature fault.
*/
void analyzeTemperatureFault();
/**
* @brief Examine STATUS_WORD for pgood or unit off faults.
*/
void analyzePgoodFault();
/**
* @brief Determine possible manufacturer-specific faults from bits in
* STATUS_MFR.
*
* The bits in the STATUS_MFR_SPECIFIC command response have "Manufacturer
* Defined" meanings. Determine which faults, if any, are present based on
* the power supply (device driver) type.
*/
void determineMFRFault();
/**
* @brief Examine STATUS_WORD value read for MFRSPECIFIC bit on.
*
* "A manufacturer specific fault or warning has occurred."
*
* If it is on, call the determineMFRFault() helper function to examine the
* value read from STATUS_MFR_SPECIFIC.
*/
void analyzeMFRFault();
/**
* @brief Analyzes the STATUS_WORD for a VIN_UV_FAULT indicator.
*/
void analyzeVinUVFault();
/**
* @brief D-Bus path to use for this power supply's inventory status.
**/
std::string inventoryPath;
/**
* @brief Store the short name to avoid string processing.
*
* The short name will be something like powersupply1, the last part of the
* inventoryPath.
*/
std::string shortName;
/**
* @brief Given a full inventory path, returns the last node of the path as
* the "short name"
*/
std::string findShortName(const std::string& invPath)
{
auto const lastSlashPos = invPath.find_last_of('/');
if ((lastSlashPos == std::string::npos) ||
((lastSlashPos + 1) == invPath.size()))
{
return invPath;
}
else
{
return invPath.substr(lastSlashPos + 1);
}
}
/**
* @brief The libgpiod object for monitoring PSU presence
*/
std::unique_ptr<GPIOInterfaceBase> presenceGPIO = nullptr;
/** @brief True if the power supply is present. */
bool present = false;
/** @brief Power supply model name. */
std::string modelName;
/** @brief D-Bus match variable used to subscribe to Present property
* changes.
**/
std::unique_ptr<sdbusplus::bus::match_t> presentMatch;
/** @brief D-Bus match variable used to subscribe for Present property
* interface added.
*/
std::unique_ptr<sdbusplus::bus::match_t> presentAddedMatch;
/**
* @brief Pointer to the PMBus interface
*
* Used to read or write to/from PMBus power supply devices.
*/
std::unique_ptr<phosphor::pmbus::PMBusBase> pmbusIntf = nullptr;
/** @brief Stored copy of the firmware version/revision string */
std::string fwVersion;
/**
* @brief The file system path used for binding the device driver.
*/
const std::filesystem::path bindPath;
/* @brief The string to pass in for binding the device driver. */
std::string bindDevice;
/**
* @brief The result of the most recent availability check
*
* Saved on the object so changes can be detected.
*/
bool available = false;
/**
* @brief Binds or unbinds the power supply device driver
*
* Called when a presence change is detected to either bind the device
* driver for the power supply when it is installed, or unbind the device
* driver when the power supply is removed.
*
* Writes <device> to <path>/bind (or unbind)
*
* @param present - when true, will bind the device driver
* when false, will unbind the device driver
*/
void bindOrUnbindDriver(bool present);
/**
* @brief Updates the presence status by querying D-Bus
*
* The D-Bus inventory properties for this power supply will be read to
* determine if the power supply is present or not and update this
* object's present member variable to reflect current status.
**/
void updatePresence();
/**
* @brief Updates the power supply presence by reading the GPIO line.
*/
void updatePresenceGPIO();
/**
* @brief Callback for inventory property changes
*
* Process change of Present property for power supply.
*
* This is used if we are watching the D-Bus properties instead of reading
* the GPIO presence line ourselves.
*
* @param[in] msg - Data associated with Present change signal
**/
void inventoryChanged(sdbusplus::message::message& msg);
/**
* @brief Callback for inventory property added.
*
* Process add of the interface with the Present property for power supply.
*
* This is used if we are watching the D-Bus properties instead of reading
* the GPIO presence line ourselves.
*
* @param[in] msg - Data associated with Present add signal
**/
void inventoryAdded(sdbusplus::message::message& msg);
};
} // namespace phosphor::power::psu