blob: 91021a4c71a73f9b0a5a46bd87da5d7da08b17a1 [file] [log] [blame]
/**
* Copyright © 2021 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 "power_control.hpp"
#include "types.hpp"
#include "ucd90320_monitor.hpp"
#include <fmt/chrono.h>
#include <fmt/format.h>
#include <phosphor-logging/elog-errors.hpp>
#include <phosphor-logging/elog.hpp>
#include <phosphor-logging/log.hpp>
#include <xyz/openbmc_project/Common/error.hpp>
#include <exception>
#include <string>
using namespace phosphor::logging;
namespace phosphor::power::sequencer
{
const std::string interfaceName = "xyz.openbmc_project.Configuration.UCD90320";
const std::string addressPropertyName = "Address";
const std::string busPropertyName = "Bus";
const std::string namePropertyName = "Name";
PowerControl::PowerControl(sdbusplus::bus::bus& bus,
const sdeventplus::Event& event) :
PowerObject{bus, POWER_OBJ_PATH, PowerObject::action::defer_emit},
bus{bus}, device{std::make_unique<PowerSequencerMonitor>(bus)},
match{bus,
sdbusplus::bus::match::rules::interfacesAdded() +
sdbusplus::bus::match::rules::sender(
"xyz.openbmc_project.EntityManager"),
std::bind(&PowerControl::interfacesAddedHandler, this,
std::placeholders::_1)},
powerOnAllowedTime{std::chrono::steady_clock::now() + minimumColdStartTime},
timer{event, std::bind(&PowerControl::pollPgood, this), pollInterval}
{
// Obtain dbus service name
bus.request_name(POWER_IFACE);
setUpDevice();
setUpGpio();
}
void PowerControl::getDeviceProperties(util::DbusPropertyMap& properties)
{
uint64_t* i2cBus = nullptr;
uint64_t* i2cAddress = nullptr;
std::string* name = nullptr;
for (const auto& property : properties)
{
try
{
if (property.first == busPropertyName)
{
i2cBus = std::get_if<uint64_t>(&properties[busPropertyName]);
}
else if (property.first == addressPropertyName)
{
i2cAddress =
std::get_if<uint64_t>(&properties[addressPropertyName]);
}
else if (property.first == namePropertyName)
{
name = std::get_if<std::string>(&properties[namePropertyName]);
}
}
catch (const std::exception&)
{}
}
if (i2cBus && i2cAddress && name && !name->empty())
{
log<level::DEBUG>(
fmt::format(
"Found power sequencer device properties, name: {}, bus: {} addr: {:#02x} ",
*name, *i2cBus, *i2cAddress)
.c_str());
// Create device object
device = std::make_unique<UCD90320Monitor>(bus, *i2cBus, *i2cAddress);
deviceFound = true;
}
}
int PowerControl::getPgood() const
{
return pgood;
}
int PowerControl::getPgoodTimeout() const
{
return timeout.count();
}
int PowerControl::getState() const
{
return state;
}
void PowerControl::interfacesAddedHandler(sdbusplus::message::message& msg)
{
// Only continue if message is valid and device has not already been found
if (!msg || deviceFound)
{
return;
}
try
{
// Read the dbus message
sdbusplus::message::object_path objPath;
std::map<std::string, std::map<std::string, util::DbusVariant>>
interfaces;
msg.read(objPath, interfaces);
// Find the device interface, if present
auto itIntf = interfaces.find(interfaceName);
if (itIntf != interfaces.cend())
{
log<level::INFO>(
fmt::format("InterfacesAdded for: {}", interfaceName).c_str());
getDeviceProperties(itIntf->second);
}
}
catch (const std::exception&)
{
// Error trying to read interfacesAdded message.
}
}
void PowerControl::pollPgood()
{
if (inStateTransition)
{
// In transition between power on and off, check for timeout
const auto now = std::chrono::steady_clock::now();
if (now > pgoodTimeoutTime)
{
log<level::ERR>(
fmt::format("Power state transition timeout, state: {}", state)
.c_str());
inStateTransition = false;
if (state)
{
// Time out powering on
device->onFailure(true, powerSupplyError);
}
else
{
// Time out powering off
std::map<std::string, std::string> additionalData{};
device->logError(
"xyz.openbmc_project.Power.Error.PowerOffTimeout",
additionalData);
}
failureFound = true;
return;
}
}
int pgoodState = pgoodLine.get_value();
if (pgoodState != pgood)
{
// Power good has changed since last read
pgood = pgoodState;
if (pgoodState == 0)
{
emitPowerLostSignal();
}
else
{
emitPowerGoodSignal();
// Clear any errors on the transition to power on
powerSupplyError.clear();
failureFound = false;
}
emitPropertyChangedSignal("pgood");
}
if (pgoodState == state)
{
// Power good matches requested state
inStateTransition = false;
}
else if (!inStateTransition && (pgoodState == 0) && !failureFound)
{
// Not in power off state, not changing state, and power good is off
log<level::ERR>("Chassis pgood failure");
device->onFailure(false, powerSupplyError);
failureFound = true;
// Power good has failed, call for chassis hard power off
auto method =
bus.new_method_call(util::SYSTEMD_SERVICE, util::SYSTEMD_ROOT,
util::SYSTEMD_INTERFACE, "StartUnit");
method.append(util::POWEROFF_TARGET);
method.append("replace");
bus.call_noreply(method);
}
}
void PowerControl::setPgoodTimeout(int t)
{
if (timeout.count() != t)
{
timeout = std::chrono::seconds(t);
emitPropertyChangedSignal("pgood_timeout");
}
}
void PowerControl::setPowerSupplyError(const std::string& error)
{
powerSupplyError = error;
}
void PowerControl::setState(int s)
{
if (state == s)
{
log<level::INFO>(
fmt::format("Power already at requested state: {}", state).c_str());
return;
}
if (s == 0)
{
// Wait for two seconds when powering down. This is to allow host and
// other BMC applications time to complete power off processing
std::this_thread::sleep_for(std::chrono::seconds(2));
}
else
{
// If minimum power off time has not passed, wait
if (powerOnAllowedTime > std::chrono::steady_clock::now())
{
log<level::INFO>(
fmt::format(
"Waiting {} seconds until power on allowed",
std::chrono::duration_cast<std::chrono::seconds>(
powerOnAllowedTime - std::chrono::steady_clock::now())
.count())
.c_str());
}
std::this_thread::sleep_until(powerOnAllowedTime);
}
log<level::INFO>(fmt::format("setState: {}", s).c_str());
powerControlLine.request(
{"phosphor-power-control", gpiod::line_request::DIRECTION_OUTPUT, 0});
powerControlLine.set_value(s);
powerControlLine.release();
if (s == 0)
{
// Set a minimum amount of time to wait before next power on
powerOnAllowedTime =
std::chrono::steady_clock::now() + minimumPowerOffTime;
}
pgoodTimeoutTime = std::chrono::steady_clock::now() + timeout;
inStateTransition = true;
state = s;
emitPropertyChangedSignal("state");
}
void PowerControl::setUpDevice()
{
try
{
auto objects = util::getSubTree(bus, "/", interfaceName, 0);
// Search for matching interface in returned objects
for (const auto& [path, services] : objects)
{
auto service = services.begin()->first;
if (path.empty() || service.empty())
{
continue;
}
// Get the properties for the device interface
auto properties =
util::getAllProperties(bus, path, interfaceName, service);
getDeviceProperties(properties);
}
}
catch (const std::exception&)
{
// Interface or property not found. Let the Interfaces Added callback
// process the information once the interfaces are added to D-Bus.
}
}
void PowerControl::setUpGpio()
{
const std::string powerControlLineName = "power-chassis-control";
const std::string pgoodLineName = "power-chassis-good";
pgoodLine = gpiod::find_line(pgoodLineName);
if (!pgoodLine)
{
std::string errorString{"GPIO line name not found: " + pgoodLineName};
log<level::ERR>(errorString.c_str());
report<
sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure>();
throw std::runtime_error(errorString);
}
powerControlLine = gpiod::find_line(powerControlLineName);
if (!powerControlLine)
{
std::string errorString{"GPIO line name not found: " +
powerControlLineName};
log<level::ERR>(errorString.c_str());
report<
sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure>();
throw std::runtime_error(errorString);
}
pgoodLine.request(
{"phosphor-power-control", gpiod::line_request::DIRECTION_INPUT, 0});
int pgoodState = pgoodLine.get_value();
pgood = pgoodState;
state = pgoodState;
log<level::INFO>(fmt::format("Pgood state: {}", pgoodState).c_str());
}
} // namespace phosphor::power::sequencer