blob: 96dfaa078f82606a2e78650f74a31e4af6bece88 [file] [log] [blame]
#include "config.h"
#include "power_supply.hpp"
#include "types.hpp"
#include "util.hpp"
#include <fmt/format.h>
#include <xyz/openbmc_project/Common/Device/error.hpp>
#include <chrono> // sleep_for()
#include <cstdint> // uint8_t...
#include <fstream>
#include <thread> // sleep_for()
namespace phosphor::power::psu
{
// Amount of time in milliseconds to delay between power supply going from
// missing to present before running the bind command(s).
constexpr auto bindDelay = 1000;
using namespace phosphor::logging;
using namespace sdbusplus::xyz::openbmc_project::Common::Device::Error;
PowerSupply::PowerSupply(sdbusplus::bus::bus& bus, const std::string& invpath,
std::uint8_t i2cbus, std::uint16_t i2caddr,
const std::string& gpioLineName) :
bus(bus),
inventoryPath(invpath), bindPath("/sys/bus/i2c/drivers/ibm-cffps")
{
if (inventoryPath.empty())
{
throw std::invalid_argument{"Invalid empty inventoryPath"};
}
if (gpioLineName.empty())
{
throw std::invalid_argument{"Invalid empty gpioLineName"};
}
log<level::DEBUG>(fmt::format("gpioLineName: {}", gpioLineName).c_str());
presenceGPIO = createGPIO(gpioLineName);
std::ostringstream ss;
ss << std::hex << std::setw(4) << std::setfill('0') << i2caddr;
std::string addrStr = ss.str();
std::string busStr = std::to_string(i2cbus);
bindDevice = busStr;
bindDevice.append("-");
bindDevice.append(addrStr);
pmbusIntf = phosphor::pmbus::createPMBus(i2cbus, addrStr);
// Get the current state of the Present property.
try
{
updatePresenceGPIO();
}
catch (...)
{
// If the above attempt to use the GPIO failed, it likely means that the
// GPIOs are in use by the kernel, meaning it is using gpio-keys.
// So, I should rely on phosphor-gpio-presence to update D-Bus, and
// work that way for power supply presence.
presenceGPIO = nullptr;
// Setup the functions to call when the D-Bus inventory path for the
// Present property changes.
presentMatch = std::make_unique<sdbusplus::bus::match_t>(
bus,
sdbusplus::bus::match::rules::propertiesChanged(inventoryPath,
INVENTORY_IFACE),
[this](auto& msg) { this->inventoryChanged(msg); });
presentAddedMatch = std::make_unique<sdbusplus::bus::match_t>(
bus,
sdbusplus::bus::match::rules::interfacesAdded() +
sdbusplus::bus::match::rules::argNpath(0, inventoryPath),
[this](auto& msg) { this->inventoryAdded(msg); });
updatePresence();
updateInventory();
}
}
void PowerSupply::bindOrUnbindDriver(bool present)
{
auto action = (present) ? "bind" : "unbind";
auto path = bindPath / action;
if (present)
{
log<level::INFO>(
fmt::format("Binding device driver. path: {} device: {}",
path.string(), bindDevice)
.c_str());
}
else
{
log<level::INFO>(
fmt::format("Unbinding device driver. path: {} device: {}",
path.string(), bindDevice)
.c_str());
}
std::ofstream file;
file.exceptions(std::ofstream::failbit | std::ofstream::badbit |
std::ofstream::eofbit);
try
{
file.open(path);
file << bindDevice;
file.close();
}
catch (const std::exception& e)
{
auto err = errno;
log<level::ERR>(
fmt::format("Failed binding or unbinding device. errno={}", err)
.c_str());
}
}
void PowerSupply::updatePresence()
{
try
{
present = getPresence(bus, inventoryPath);
}
catch (const sdbusplus::exception::exception& e)
{
// Relying on property change or interface added to retry.
// Log an informational trace to the journal.
log<level::INFO>(
fmt::format("D-Bus property {} access failure exception",
inventoryPath)
.c_str());
}
}
void PowerSupply::updatePresenceGPIO()
{
bool presentOld = present;
try
{
if (presenceGPIO->read() > 0)
{
present = true;
}
else
{
present = false;
}
}
catch (const std::exception& e)
{
log<level::ERR>(
fmt::format("presenceGPIO read fail: {}", e.what()).c_str());
throw;
}
if (presentOld != present)
{
log<level::DEBUG>(
fmt::format("presentOld: {} present: {}", presentOld, present)
.c_str());
if (present)
{
std::this_thread::sleep_for(std::chrono::milliseconds(bindDelay));
bindOrUnbindDriver(present);
pmbusIntf->findHwmonDir();
onOffConfig(phosphor::pmbus::ON_OFF_CONFIG_CONTROL_PIN_ONLY);
clearFaults();
}
else
{
bindOrUnbindDriver(present);
}
auto invpath = inventoryPath.substr(strlen(INVENTORY_OBJ_PATH));
auto const lastSlashPos = invpath.find_last_of('/');
std::string prettyName = invpath.substr(lastSlashPos + 1);
setPresence(bus, invpath, present, prettyName);
updateInventory();
}
}
void PowerSupply::analyze()
{
using namespace phosphor::pmbus;
if (presenceGPIO)
{
updatePresenceGPIO();
}
if ((present) && (readFail < LOG_LIMIT))
{
try
{
statusWord = pmbusIntf->read(STATUS_WORD, Type::Debug);
// Read worked, reset the fail count.
readFail = 0;
if (statusWord)
{
statusMFR = pmbusIntf->read(STATUS_MFR, Type::Debug);
if (statusWord & status_word::INPUT_FAULT_WARN)
{
if (!inputFault)
{
log<level::INFO>(fmt::format("INPUT fault: "
"status word = {:#04x}, "
"MFR fault = {:#02x}",
statusWord, statusMFR)
.c_str());
}
faultFound = true;
inputFault = true;
}
if (statusWord & status_word::MFR_SPECIFIC_FAULT)
{
if (!mfrFault)
{
log<level::ERR>(fmt::format("MFR fault: "
"status word = {:#04x} "
"MFR fault = {:#02x}",
statusWord, statusMFR)
.c_str());
}
faultFound = true;
mfrFault = true;
}
if (statusWord & status_word::VIN_UV_FAULT)
{
if (!vinUVFault)
{
log<level::INFO>(fmt::format("VIN_UV fault: "
"status word = {:#04x}, "
"MFR fault = {:#02x}",
statusWord, statusMFR)
.c_str());
}
faultFound = true;
vinUVFault = true;
}
}
else
{
faultFound = false;
inputFault = false;
mfrFault = false;
vinUVFault = false;
}
}
catch (const ReadFailure& e)
{
readFail++;
phosphor::logging::commit<ReadFailure>();
}
}
}
void PowerSupply::onOffConfig(uint8_t data)
{
using namespace phosphor::pmbus;
if (present)
{
log<level::INFO>("ON_OFF_CONFIG write", entry("DATA=0x%02X", data));
try
{
std::vector<uint8_t> configData{data};
pmbusIntf->writeBinary(ON_OFF_CONFIG, configData,
Type::HwmonDeviceDebug);
}
catch (...)
{
// The underlying code in writeBinary will log a message to the
// journal if the write fails. If the ON_OFF_CONFIG is not setup
// as desired, later fault detection and analysis code should
// catch any of the fall out. We should not need to terminate
// the application if this write fails.
}
}
}
void PowerSupply::clearFaults()
{
faultLogged = false;
// The PMBus device driver does not allow for writing CLEAR_FAULTS
// directly. However, the pmbus hwmon device driver code will send a
// CLEAR_FAULTS after reading from any of the hwmon "files" in sysfs, so
// reading in1_input should result in clearing the fault bits in
// STATUS_BYTE/STATUS_WORD.
// I do not care what the return value is.
if (present)
{
faultFound = false;
inputFault = false;
mfrFault = false;
statusMFR = 0;
vinUVFault = false;
readFail = 0;
try
{
static_cast<void>(
pmbusIntf->read("in1_input", phosphor::pmbus::Type::Hwmon));
}
catch (const ReadFailure& e)
{
// Since I do not care what the return value is, I really do not
// care much if it gets a ReadFailure either. However, this
// should not prevent the application from continuing to run, so
// catching the read failure.
}
}
}
void PowerSupply::inventoryChanged(sdbusplus::message::message& msg)
{
std::string msgSensor;
std::map<std::string, std::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())
{
if (std::get<bool>(valPropMap->second))
{
present = true;
// TODO: Immediately trying to read or write the "files" causes
// read or write failures.
using namespace std::chrono_literals;
std::this_thread::sleep_for(20ms);
pmbusIntf->findHwmonDir();
onOffConfig(phosphor::pmbus::ON_OFF_CONFIG_CONTROL_PIN_ONLY);
clearFaults();
updateInventory();
}
else
{
present = false;
// Clear out the now outdated inventory properties
updateInventory();
}
}
}
void PowerSupply::inventoryAdded(sdbusplus::message::message& msg)
{
sdbusplus::message::object_path path;
msg.read(path);
// Make sure the signal is for the PSU inventory path
if (path == inventoryPath)
{
std::map<std::string, std::map<std::string, std::variant<bool>>>
interfaces;
// Get map of interfaces and their properties
msg.read(interfaces);
auto properties = interfaces.find(INVENTORY_IFACE);
if (properties != interfaces.end())
{
auto property = properties->second.find(PRESENT_PROP);
if (property != properties->second.end())
{
present = std::get<bool>(property->second);
log<level::INFO>(fmt::format("Power Supply {} Present {}",
inventoryPath, present)
.c_str());
updateInventory();
}
}
}
}
void PowerSupply::updateInventory()
{
using namespace phosphor::pmbus;
#if IBM_VPD
std::string ccin;
std::string pn;
std::string fn;
std::string header;
std::string sn;
using PropertyMap =
std::map<std::string,
std::variant<std::string, std::vector<uint8_t>, bool>>;
PropertyMap assetProps;
PropertyMap operProps;
PropertyMap versionProps;
PropertyMap ipzvpdDINFProps;
PropertyMap ipzvpdVINIProps;
using InterfaceMap = std::map<std::string, PropertyMap>;
InterfaceMap interfaces;
using ObjectMap = std::map<sdbusplus::message::object_path, InterfaceMap>;
ObjectMap object;
#endif
log<level::DEBUG>(
fmt::format("updateInventory() inventoryPath: {}", inventoryPath)
.c_str());
if (present)
{
// TODO: non-IBM inventory updates?
#if IBM_VPD
try
{
ccin = pmbusIntf->readString(CCIN, Type::HwmonDeviceDebug);
assetProps.emplace(MODEL_PROP, ccin);
modelName = ccin;
}
catch (const ReadFailure& e)
{
// Ignore the read failure, let pmbus code indicate failure,
// path...
// TODO - ibm918
// https://github.com/openbmc/docs/blob/master/designs/vpd-collection.md
// The BMC must log errors if any of the VPD cannot be properly
// parsed or fails ECC checks.
}
try
{
pn = pmbusIntf->readString(PART_NUMBER, Type::HwmonDeviceDebug);
assetProps.emplace(PN_PROP, pn);
}
catch (const ReadFailure& e)
{
// Ignore the read failure, let pmbus code indicate failure,
// path...
}
try
{
fn = pmbusIntf->readString(FRU_NUMBER, Type::HwmonDeviceDebug);
}
catch (const ReadFailure& e)
{
// Ignore the read failure, let pmbus code indicate failure,
// path...
}
try
{
header =
pmbusIntf->readString(SERIAL_HEADER, Type::HwmonDeviceDebug);
sn = pmbusIntf->readString(SERIAL_NUMBER, Type::HwmonDeviceDebug);
assetProps.emplace(SN_PROP, sn);
}
catch (const ReadFailure& e)
{
// Ignore the read failure, let pmbus code indicate failure,
// path...
}
try
{
fwVersion =
pmbusIntf->readString(FW_VERSION, Type::HwmonDeviceDebug);
versionProps.emplace(VERSION_PROP, fwVersion);
}
catch (const ReadFailure& e)
{
// Ignore the read failure, let pmbus code indicate failure,
// path...
}
ipzvpdVINIProps.emplace("CC",
std::vector<uint8_t>(ccin.begin(), ccin.end()));
ipzvpdVINIProps.emplace("PN",
std::vector<uint8_t>(pn.begin(), pn.end()));
ipzvpdVINIProps.emplace("FN",
std::vector<uint8_t>(fn.begin(), fn.end()));
std::string header_sn = header + sn + '\0';
ipzvpdVINIProps.emplace(
"SN", std::vector<uint8_t>(header_sn.begin(), header_sn.end()));
std::string description = "IBM PS";
ipzvpdVINIProps.emplace(
"DR", std::vector<uint8_t>(description.begin(), description.end()));
// Update the Resource Identifier (RI) keyword
// 2 byte FRC: 0x0003
// 2 byte RID: 0x1000, 0x1001...
std::uint8_t num = std::stoul(
inventoryPath.substr(inventoryPath.size() - 1, 1), nullptr, 0);
std::vector<uint8_t> ri{0x00, 0x03, 0x10, num};
ipzvpdDINFProps.emplace("RI", ri);
// Fill in the FRU Label (FL) keyword.
std::string fl = "E";
fl.push_back(inventoryPath.back());
fl.resize(FL_KW_SIZE, ' ');
ipzvpdDINFProps.emplace("FL",
std::vector<uint8_t>(fl.begin(), fl.end()));
interfaces.emplace(ASSET_IFACE, std::move(assetProps));
interfaces.emplace(VERSION_IFACE, std::move(versionProps));
interfaces.emplace(DINF_IFACE, std::move(ipzvpdDINFProps));
interfaces.emplace(VINI_IFACE, std::move(ipzvpdVINIProps));
// Update the Functional
operProps.emplace(FUNCTIONAL_PROP, present);
interfaces.emplace(OPERATIONAL_STATE_IFACE, std::move(operProps));
auto path = inventoryPath.substr(strlen(INVENTORY_OBJ_PATH));
object.emplace(path, std::move(interfaces));
try
{
auto service =
util::getService(INVENTORY_OBJ_PATH, INVENTORY_MGR_IFACE, bus);
if (service.empty())
{
log<level::ERR>("Unable to get inventory manager service");
return;
}
auto method =
bus.new_method_call(service.c_str(), INVENTORY_OBJ_PATH,
INVENTORY_MGR_IFACE, "Notify");
method.append(std::move(object));
auto reply = bus.call(method);
}
catch (const std::exception& e)
{
log<level::ERR>(
std::string(e.what() + std::string(" PATH=") + inventoryPath)
.c_str());
}
#endif
}
}
void PowerSupply::getInputVoltage(double& actualInputVoltage,
int& inputVoltage) const
{
using namespace phosphor::pmbus;
actualInputVoltage = in_input::VIN_VOLTAGE_0;
inputVoltage = in_input::VIN_VOLTAGE_0;
if (present)
{
try
{
// Read input voltage in millivolts
auto inputVoltageStr = pmbusIntf->readString(READ_VIN, Type::Hwmon);
// Convert to volts
actualInputVoltage = std::stod(inputVoltageStr) / 1000;
// Calculate the voltage based on voltage thresholds
if (actualInputVoltage < in_input::VIN_VOLTAGE_MIN)
{
inputVoltage = in_input::VIN_VOLTAGE_0;
}
else if (actualInputVoltage < in_input::VIN_VOLTAGE_110_THRESHOLD)
{
inputVoltage = in_input::VIN_VOLTAGE_110;
}
else
{
inputVoltage = in_input::VIN_VOLTAGE_220;
}
}
catch (const std::exception& e)
{
log<level::ERR>(
fmt::format("READ_VIN read error: {}", e.what()).c_str());
}
}
}
} // namespace phosphor::power::psu