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/**
* Copyright © 2017 IBM Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <phosphor-logging/log.hpp>
#include <phosphor-logging/elog.hpp>
#include <org/open_power/Witherspoon/Fault/error.hpp>
#include <xyz/openbmc_project/Common/Device/error.hpp>
#include "elog-errors.hpp"
#include "names_values.hpp"
#include "power_supply.hpp"
#include "pmbus.hpp"
#include "utility.hpp"
using namespace phosphor::logging;
using namespace sdbusplus::org::open_power::Witherspoon::Fault::Error;
using namespace sdbusplus::xyz::openbmc_project::Common::Device::Error;
namespace witherspoon
{
namespace power
{
namespace psu
{
constexpr auto INVENTORY_OBJ_PATH = "/xyz/openbmc_project/inventory";
constexpr auto INVENTORY_INTERFACE = "xyz.openbmc_project.Inventory.Item";
constexpr auto PRESENT_PROP = "Present";
constexpr auto POWER_OBJ_PATH = "/org/openbmc/control/power0";
constexpr auto POWER_INTERFACE = "org.openbmc.control.Power";
PowerSupply::PowerSupply(const std::string& name, size_t inst,
const std::string& objpath,
const std::string& invpath,
sdbusplus::bus::bus& bus,
event::Event& e,
std::chrono::seconds& t,
std::chrono::seconds& p)
: Device(name, inst), monitorPath(objpath), pmbusIntf(objpath),
inventoryPath(INVENTORY_OBJ_PATH + invpath), bus(bus), event(e),
presentInterval(p),
presentTimer(e, [this]()
{
this->present = true;
}),
powerOnInterval(t),
powerOnTimer(e, [this]()
{
this->powerOn = true;
})
{
using namespace sdbusplus::bus;
presentMatch = std::make_unique<match_t>(bus,
match::rules::propertiesChanged(
inventoryPath,
INVENTORY_INTERFACE),
[this](auto& msg)
{
this->inventoryChanged(msg);
});
// Get initial presence state.
updatePresence();
// Subscribe to power state changes
powerOnMatch = std::make_unique<match_t>(bus,
match::rules::propertiesChanged(
POWER_OBJ_PATH,
POWER_INTERFACE),
[this](auto& msg)
{
this->powerStateChanged(msg);
});
// Get initial power state.
updatePowerState();
}
void PowerSupply::captureCmd(util::NamesValues& nv, const std::string& cmd,
witherspoon::pmbus::Type type)
{
if (pmbusIntf.exists(cmd, type))
{
try
{
auto val = pmbusIntf.read(cmd, type);
nv.add(cmd, val);
}
catch (std::exception& e)
{
log<level::INFO>("Unable to capture metadata", entry("CMD=%s",
cmd));
}
}
}
void PowerSupply::analyze()
{
using namespace witherspoon::pmbus;
try
{
if (present)
{
std::uint16_t statusWord = 0;
// Read the 2 byte STATUS_WORD value to check for faults.
statusWord = pmbusIntf.read(STATUS_WORD, Type::Debug);
//TODO: openbmc/openbmc#2484 Three consecutive reads should be
// performed.
// If 3 consecutive reads are seen, log the fault.
// Driver gives cached value, read once a second.
// increment for fault on, decrement for fault off, to deglitch.
// If count reaches 3, we have fault. If count reaches 0, fault is
// cleared.
checkInputFault(statusWord);
if (powerOn && !faultFound)
{
checkFanFault(statusWord);
checkTemperatureFault(statusWord);
checkOutputOvervoltageFault(statusWord);
checkCurrentOutOverCurrentFault(statusWord);
checkPGOrUnitOffFault(statusWord);
}
}
}
catch (ReadFailure& e)
{
if (!readFailLogged)
{
commit<ReadFailure>();
readFailLogged = true;
}
}
return;
}
void PowerSupply::inventoryChanged(sdbusplus::message::message& msg)
{
std::string msgSensor;
std::map<std::string, sdbusplus::message::variant<uint32_t, bool>> msgData;
msg.read(msgSensor, msgData);
// Check if it was the Present property that changed.
auto valPropMap = msgData.find(PRESENT_PROP);
if (valPropMap != msgData.end())
{
present = sdbusplus::message::variant_ns::get<bool>(valPropMap->second);
if (present)
{
clearFaults();
presentTimer.start(presentInterval, Timer::TimerType::oneshot);
}
else
{
presentTimer.stop();
}
}
return;
}
void PowerSupply::updatePresence()
{
// Use getProperty utility function to get presence status.
std::string service = "xyz.openbmc_project.Inventory.Manager";
util::getProperty(INVENTORY_INTERFACE, PRESENT_PROP, inventoryPath,
service, bus, this->present);
}
void PowerSupply::powerStateChanged(sdbusplus::message::message& msg)
{
int32_t state = 0;
std::string msgSensor;
std::map<std::string, sdbusplus::message::variant<int32_t, int32_t>>
msgData;
msg.read(msgSensor, msgData);
// Check if it was the Present property that changed.
auto valPropMap = msgData.find("state");
if (valPropMap != msgData.end())
{
state = sdbusplus::message::variant_ns::get<int32_t>(valPropMap->second);
// Power is on when state=1. Set the fault logged variables to false
// and start the power on timer when the state changes to 1.
if (state)
{
clearFaults();
powerOnTimer.start(powerOnInterval, Timer::TimerType::oneshot);
}
else
{
powerOnTimer.stop();
powerOn = false;
}
}
}
void PowerSupply::updatePowerState()
{
// When state = 1, system is powered on
int32_t state = 0;
try
{
auto service = util::getService(POWER_OBJ_PATH,
POWER_INTERFACE,
bus);
// Use getProperty utility function to get power state.
util::getProperty<int32_t>(POWER_INTERFACE,
"state",
POWER_OBJ_PATH,
service,
bus,
state);
if (state)
{
powerOn = true;
}
else
{
powerOn = false;
}
}
catch (std::exception& e)
{
log<level::INFO>("Failed to get power state. Assuming it is off.");
powerOn = false;
}
}
void PowerSupply::checkInputFault(const uint16_t statusWord)
{
using namespace witherspoon::pmbus;
std::uint8_t statusInput = 0;
if (!inputFault && ((statusWord & status_word::INPUT_FAULT_WARN) ||
(statusWord & status_word::VIN_UV_FAULT)))
{
faultFound = true;
inputFault = true;
util::NamesValues nv;
nv.add("STATUS_WORD", statusWord);
captureCmd(nv, STATUS_INPUT, Type::Debug);
using metadata = org::open_power::Witherspoon::Fault::
PowerSupplyInputFault;
report<PowerSupplyInputFault>(
metadata::RAW_STATUS(nv.get().c_str()),
metadata::CALLOUT_INVENTORY_PATH(inventoryPath.c_str()));
}
else
{
if ((inputFault) &&
!(statusWord & status_word::INPUT_FAULT_WARN) &&
!(statusWord & status_word::VIN_UV_FAULT))
{
inputFault = false;
faultFound = false;
statusInput = pmbusIntf.read(STATUS_INPUT, Type::Debug);
log<level::INFO>("INPUT_FAULT_WARN cleared",
entry("POWERSUPPLY=%s", inventoryPath.c_str()),
entry("STATUS_WORD=0x%04X", statusWord),
entry("STATUS_INPUT=0x%02X", statusInput));
if (powerOn)
{
// The power supply will not be immediately powered on after
// the input power is restored.
powerOn = false;
// Start up the timer that will set the state to indicate we
// are ready for the powered on fault checks.
powerOnTimer.start(powerOnInterval, Timer::TimerType::oneshot);
}
}
}
}
void PowerSupply::checkPGOrUnitOffFault(const uint16_t statusWord)
{
using namespace witherspoon::pmbus;
if (powerOnFault < FAULT_COUNT)
{
// Check PG# and UNIT_IS_OFF
if ((statusWord & status_word::POWER_GOOD_NEGATED) ||
(statusWord & status_word::UNIT_IS_OFF))
{
log<level::INFO>("PGOOD or UNIT_IS_OFF bit bad",
entry("STATUS_WORD=0x%04X", statusWord));
powerOnFault++;
}
else
{
if (powerOnFault > 0)
{
log<level::INFO>("PGOOD and UNIT_IS_OFF bits good");
powerOnFault = 0;
}
}
if (powerOnFault >= FAULT_COUNT)
{
faultFound = true;
util::NamesValues nv;
nv.add("STATUS_WORD", statusWord);
captureCmd(nv, STATUS_INPUT, Type::Debug);
auto status0Vout = pmbusIntf.insertPageNum(STATUS_VOUT, 0);
captureCmd(nv, status0Vout, Type::Debug);
captureCmd(nv, STATUS_IOUT, Type::Debug);
captureCmd(nv, STATUS_MFR, Type::Debug);
using metadata = org::open_power::Witherspoon::Fault::
PowerSupplyShouldBeOn;
// A power supply is OFF (or pgood low) but should be on.
report<PowerSupplyShouldBeOn>(
metadata::RAW_STATUS(nv.get().c_str()),
metadata::CALLOUT_INVENTORY_PATH(
inventoryPath.c_str()));
}
}
}
void PowerSupply::checkCurrentOutOverCurrentFault(const uint16_t statusWord)
{
using namespace witherspoon::pmbus;
if (outputOCFault < FAULT_COUNT)
{
// Check for an output overcurrent fault.
if ((statusWord & status_word::IOUT_OC_FAULT))
{
outputOCFault++;
}
else
{
if (outputOCFault > 0)
{
outputOCFault = 0;
}
}
if (outputOCFault >= FAULT_COUNT)
{
util::NamesValues nv;
nv.add("STATUS_WORD", statusWord);
captureCmd(nv, STATUS_INPUT, Type::Debug);
auto status0Vout = pmbusIntf.insertPageNum(STATUS_VOUT, 0);
captureCmd(nv, status0Vout, Type::Debug);
captureCmd(nv, STATUS_IOUT, Type::Debug);
captureCmd(nv, STATUS_MFR, Type::Debug);
using metadata = org::open_power::Witherspoon::Fault::
PowerSupplyOutputOvercurrent;
report<PowerSupplyOutputOvercurrent>(
metadata::RAW_STATUS(nv.get().c_str()),
metadata::CALLOUT_INVENTORY_PATH(inventoryPath.c_str()));
faultFound = true;
}
}
}
void PowerSupply::checkOutputOvervoltageFault(const uint16_t statusWord)
{
using namespace witherspoon::pmbus;
// Check for an output overvoltage fault.
if ((statusWord & status_word::VOUT_OV_FAULT) &&
!outputOVFault)
{
util::NamesValues nv;
nv.add("STATUS_WORD", statusWord);
captureCmd(nv, STATUS_INPUT, Type::Debug);
auto status0Vout = pmbusIntf.insertPageNum(STATUS_VOUT, 0);
captureCmd(nv, status0Vout, Type::Debug);
captureCmd(nv, STATUS_IOUT, Type::Debug);
captureCmd(nv, STATUS_MFR, Type::Debug);
using metadata = org::open_power::Witherspoon::Fault::
PowerSupplyOutputOvervoltage;
report<PowerSupplyOutputOvervoltage>(metadata::RAW_STATUS(
nv.get().c_str()),
metadata::CALLOUT_INVENTORY_PATH(
inventoryPath.c_str()));
faultFound = true;
outputOVFault = true;
}
}
void PowerSupply::checkFanFault(const uint16_t statusWord)
{
using namespace witherspoon::pmbus;
// Check for a fan fault or warning condition
if ((statusWord & status_word::FAN_FAULT) &&
!fanFault)
{
util::NamesValues nv;
nv.add("STATUS_WORD", statusWord);
captureCmd(nv, STATUS_MFR, Type::Debug);
captureCmd(nv, STATUS_TEMPERATURE, Type::Debug);
captureCmd(nv, STATUS_FANS_1_2, Type::Debug);
using metadata = org::open_power::Witherspoon::Fault::
PowerSupplyFanFault;
report<PowerSupplyFanFault>(
metadata::RAW_STATUS(nv.get().c_str()),
metadata::CALLOUT_INVENTORY_PATH(inventoryPath.c_str()));
faultFound = true;
fanFault = true;
}
}
void PowerSupply::checkTemperatureFault(const uint16_t statusWord)
{
using namespace witherspoon::pmbus;
// Due to how the PMBus core device driver sends a clear faults command
// the bit in STATUS_WORD will likely be cleared when we attempt to examine
// it for a Thermal Fault or Warning. So, check the STATUS_WORD and the
// STATUS_TEMPERATURE bits. If either indicates a fault, proceed with
// logging the over-temperature condition.
std::uint8_t statusTemperature = 0;
statusTemperature = pmbusIntf.read(STATUS_TEMPERATURE, Type::Debug);
if (((statusWord & status_word::TEMPERATURE_FAULT_WARN) ||
(statusTemperature & status_temperature::OT_FAULT)) &&
!temperatureFault)
{
// The power supply has had an over-temperature condition.
// This may not result in a shutdown if experienced for a short
// duration.
// This should not occur under normal conditions.
// The power supply may be faulty, or the paired supply may be putting
// out less current.
// Capture command responses with potentially relevant information,
// and call out the power supply reporting the condition.
util::NamesValues nv;
nv.add("STATUS_WORD", statusWord);
captureCmd(nv, STATUS_MFR, Type::Debug);
captureCmd(nv, STATUS_IOUT, Type::Debug);
nv.add("STATUS_TEMPERATURE", statusTemperature);
captureCmd(nv, STATUS_FANS_1_2, Type::Debug);
using metadata = org::open_power::Witherspoon::Fault::
PowerSupplyTemperatureFault;
report<PowerSupplyTemperatureFault>(
metadata::RAW_STATUS(nv.get().c_str()),
metadata::CALLOUT_INVENTORY_PATH(inventoryPath.c_str()));
faultFound = true;
temperatureFault = true;
}
}
void PowerSupply::clearFaults()
{
readFailLogged = false;
inputFault = false;
powerOnFault = 0;
outputOCFault = 0;
outputOVFault = false;
fanFault = false;
temperatureFault = false;
faultFound = false;
return;
}
}
}
}