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/*
// Copyright (c) 2018 Intel 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 "commandutils.hpp"
#include "types.hpp"
#include <boost/algorithm/string.hpp>
#include <boost/bimap.hpp>
#include <boost/container/flat_map.hpp>
#include <phosphor-logging/log.hpp>
#include <sdbusplus/bus/match.hpp>
#include <cstdio>
#include <cstring>
#include <exception>
#include <filesystem>
#include <map>
#include <string>
#include <string_view>
#include <vector>
#pragma once
struct CmpStrVersion
{
bool operator()(std::string a, std::string b) const
{
return strverscmp(a.c_str(), b.c_str()) < 0;
}
};
using SensorSubTree = boost::container::flat_map<
std::string,
boost::container::flat_map<std::string, std::vector<std::string>>,
CmpStrVersion>;
using SensorNumMap = boost::bimap<int, std::string>;
static constexpr uint16_t maxSensorsPerLUN = 255;
static constexpr uint16_t maxIPMISensors = (maxSensorsPerLUN * 3);
static constexpr uint16_t lun1Sensor0 = 0x100;
static constexpr uint16_t lun3Sensor0 = 0x300;
static constexpr uint16_t invalidSensorNumber = 0xFFFF;
static constexpr uint8_t reservedSensorNumber = 0xFF;
namespace details
{
// Enable/disable the logging of stats instrumentation
static constexpr bool enableInstrumentation = false;
class IPMIStatsEntry
{
private:
int numReadings = 0;
int numMissings = 0;
int numStreakRead = 0;
int numStreakMiss = 0;
double minValue = 0.0;
double maxValue = 0.0;
std::string sensorName;
public:
const std::string& getName(void) const
{
return sensorName;
}
void updateName(std::string_view name)
{
sensorName = name;
}
// Returns true if this is the first successful reading
// This is so the caller can log the coefficients used
bool updateReading(double reading, int raw)
{
if constexpr (!enableInstrumentation)
{
return false;
}
bool first = ((numReadings == 0) && (numMissings == 0));
// Sensors can use "nan" to indicate unavailable reading
if (!(std::isfinite(reading)))
{
// Only show this if beginning a new streak
if (numStreakMiss == 0)
{
std::cerr << "IPMI sensor " << sensorName
<< ": Missing reading, byte=" << raw
<< ", Reading counts good=" << numReadings
<< " miss=" << numMissings
<< ", Prior good streak=" << numStreakRead << "\n";
}
numStreakRead = 0;
++numMissings;
++numStreakMiss;
return first;
}
// Only show this if beginning a new streak and not the first time
if ((numStreakRead == 0) && (numReadings != 0))
{
std::cerr << "IPMI sensor " << sensorName
<< ": Recovered reading, value=" << reading
<< " byte=" << raw
<< ", Reading counts good=" << numReadings
<< " miss=" << numMissings
<< ", Prior miss streak=" << numStreakMiss << "\n";
}
// Initialize min/max if the first successful reading
if (numReadings == 0)
{
std::cerr << "IPMI sensor " << sensorName
<< ": First reading, value=" << reading << " byte=" << raw
<< "\n";
minValue = reading;
maxValue = reading;
}
numStreakMiss = 0;
++numReadings;
++numStreakRead;
// Only provide subsequent output if new min/max established
if (reading < minValue)
{
std::cerr << "IPMI sensor " << sensorName
<< ": Lowest reading, value=" << reading
<< " byte=" << raw << "\n";
minValue = reading;
}
if (reading > maxValue)
{
std::cerr << "IPMI sensor " << sensorName
<< ": Highest reading, value=" << reading
<< " byte=" << raw << "\n";
maxValue = reading;
}
return first;
}
};
class IPMIStatsTable
{
private:
std::vector<IPMIStatsEntry> entries;
private:
void padEntries(size_t index)
{
char hexbuf[16];
// Pad vector until entries[index] becomes a valid index
while (entries.size() <= index)
{
// As name not known yet, use human-readable hex as name
IPMIStatsEntry newEntry;
sprintf(hexbuf, "0x%02zX", entries.size());
newEntry.updateName(hexbuf);
entries.push_back(std::move(newEntry));
}
}
public:
void wipeTable(void)
{
entries.clear();
}
const std::string& getName(size_t index)
{
padEntries(index);
return entries[index].getName();
}
void updateName(size_t index, std::string_view name)
{
padEntries(index);
entries[index].updateName(name);
}
bool updateReading(size_t index, double reading, int raw)
{
padEntries(index);
return entries[index].updateReading(reading, raw);
}
};
// This object is global singleton, used from a variety of places
inline IPMIStatsTable sdrStatsTable;
inline static uint16_t getSensorSubtree(std::shared_ptr<SensorSubTree>& subtree)
{
static std::shared_ptr<SensorSubTree> sensorTreePtr;
static uint16_t sensorUpdatedIndex = 0;
sd_bus* bus = NULL;
int ret = sd_bus_default_system(&bus);
if (ret < 0)
{
phosphor::logging::log<phosphor::logging::level::ERR>(
"Failed to connect to system bus",
phosphor::logging::entry("ERRNO=0x%X", -ret));
sd_bus_unref(bus);
return sensorUpdatedIndex;
}
sdbusplus::bus::bus dbus(bus);
static sdbusplus::bus::match::match sensorAdded(
dbus,
"type='signal',member='InterfacesAdded',arg0path='/xyz/openbmc_project/"
"sensors/'",
[](sdbusplus::message::message& m) { sensorTreePtr.reset(); });
static sdbusplus::bus::match::match sensorRemoved(
dbus,
"type='signal',member='InterfacesRemoved',arg0path='/xyz/"
"openbmc_project/sensors/'",
[](sdbusplus::message::message& m) { sensorTreePtr.reset(); });
if (sensorTreePtr)
{
subtree = sensorTreePtr;
return sensorUpdatedIndex;
}
sensorTreePtr = std::make_shared<SensorSubTree>();
auto mapperCall =
dbus.new_method_call("xyz.openbmc_project.ObjectMapper",
"/xyz/openbmc_project/object_mapper",
"xyz.openbmc_project.ObjectMapper", "GetSubTree");
static constexpr const auto depth = 2;
static constexpr std::array<const char*, 3> interfaces = {
"xyz.openbmc_project.Sensor.Value",
"xyz.openbmc_project.Sensor.Threshold.Warning",
"xyz.openbmc_project.Sensor.Threshold.Critical"};
mapperCall.append("/xyz/openbmc_project/sensors", depth, interfaces);
try
{
auto mapperReply = dbus.call(mapperCall);
mapperReply.read(*sensorTreePtr);
}
catch (const sdbusplus::exception_t& e)
{
phosphor::logging::log<phosphor::logging::level::ERR>(e.what());
return sensorUpdatedIndex;
}
subtree = sensorTreePtr;
sensorUpdatedIndex++;
// The SDR is being regenerated, wipe the old stats
sdrStatsTable.wipeTable();
return sensorUpdatedIndex;
}
inline static bool getSensorNumMap(std::shared_ptr<SensorNumMap>& sensorNumMap)
{
static std::shared_ptr<SensorNumMap> sensorNumMapPtr;
bool sensorNumMapUpated = false;
static uint16_t prevSensorUpdatedIndex = 0;
std::shared_ptr<SensorSubTree> sensorTree;
uint16_t curSensorUpdatedIndex = details::getSensorSubtree(sensorTree);
if (!sensorTree)
{
return sensorNumMapUpated;
}
if ((curSensorUpdatedIndex == prevSensorUpdatedIndex) && sensorNumMapPtr)
{
sensorNumMap = sensorNumMapPtr;
return sensorNumMapUpated;
}
prevSensorUpdatedIndex = curSensorUpdatedIndex;
sensorNumMapPtr = std::make_shared<SensorNumMap>();
uint16_t sensorNum = 0;
uint16_t sensorIndex = 0;
for (const auto& sensor : *sensorTree)
{
sensorNumMapPtr->insert(
SensorNumMap::value_type(sensorNum, sensor.first));
sensorIndex++;
if (sensorIndex == maxSensorsPerLUN)
{
sensorIndex = lun1Sensor0;
}
else if (sensorIndex == (lun1Sensor0 | maxSensorsPerLUN))
{
// Skip assigning LUN 0x2 any sensors
sensorIndex = lun3Sensor0;
}
else if (sensorIndex == (lun3Sensor0 | maxSensorsPerLUN))
{
// this is an error, too many IPMI sensors
throw std::out_of_range("Maximum number of IPMI sensors exceeded.");
}
sensorNum = sensorIndex;
}
sensorNumMap = sensorNumMapPtr;
sensorNumMapUpated = true;
return sensorNumMapUpated;
}
} // namespace details
inline static bool getSensorSubtree(SensorSubTree& subtree)
{
std::shared_ptr<SensorSubTree> sensorTree;
details::getSensorSubtree(sensorTree);
if (!sensorTree)
{
return false;
}
subtree = *sensorTree;
return true;
}
struct CmpStr
{
bool operator()(const char* a, const char* b) const
{
return std::strcmp(a, b) < 0;
}
};
enum class SensorTypeCodes : uint8_t
{
reserved = 0x0,
temperature = 0x1,
voltage = 0x2,
current = 0x3,
fan = 0x4,
other = 0xB,
};
const static boost::container::flat_map<const char*, SensorTypeCodes, CmpStr>
sensorTypes{{{"temperature", SensorTypeCodes::temperature},
{"voltage", SensorTypeCodes::voltage},
{"current", SensorTypeCodes::current},
{"fan_tach", SensorTypeCodes::fan},
{"fan_pwm", SensorTypeCodes::fan},
{"power", SensorTypeCodes::other}}};
inline static std::string getSensorTypeStringFromPath(const std::string& path)
{
// get sensor type string from path, path is defined as
// /xyz/openbmc_project/sensors/<type>/label
size_t typeEnd = path.rfind("/");
if (typeEnd == std::string::npos)
{
return path;
}
size_t typeStart = path.rfind("/", typeEnd - 1);
if (typeStart == std::string::npos)
{
return path;
}
// Start at the character after the '/'
typeStart++;
return path.substr(typeStart, typeEnd - typeStart);
}
inline static uint8_t getSensorTypeFromPath(const std::string& path)
{
uint8_t sensorType = 0;
std::string type = getSensorTypeStringFromPath(path);
auto findSensor = sensorTypes.find(type.c_str());
if (findSensor != sensorTypes.end())
{
sensorType = static_cast<uint8_t>(findSensor->second);
} // else default 0x0 RESERVED
return sensorType;
}
inline static uint16_t getSensorNumberFromPath(const std::string& path)
{
std::shared_ptr<SensorNumMap> sensorNumMapPtr;
details::getSensorNumMap(sensorNumMapPtr);
if (!sensorNumMapPtr)
{
return invalidSensorNumber;
}
try
{
return sensorNumMapPtr->right.at(path);
}
catch (const std::out_of_range& e)
{
phosphor::logging::log<phosphor::logging::level::ERR>(e.what());
return invalidSensorNumber;
}
}
inline static uint8_t getSensorEventTypeFromPath(const std::string& path)
{
// TODO: Add support for additional reading types as needed
return 0x1; // reading type = threshold
}
inline static std::string getPathFromSensorNumber(uint16_t sensorNum)
{
std::shared_ptr<SensorNumMap> sensorNumMapPtr;
details::getSensorNumMap(sensorNumMapPtr);
if (!sensorNumMapPtr)
{
return std::string();
}
try
{
return sensorNumMapPtr->left.at(sensorNum);
}
catch (const std::out_of_range& e)
{
phosphor::logging::log<phosphor::logging::level::ERR>(e.what());
return std::string();
}
}
namespace ipmi
{
static inline std::map<std::string, std::vector<std::string>>
getObjectInterfaces(const char* path)
{
std::map<std::string, std::vector<std::string>> interfacesResponse;
std::vector<std::string> interfaces;
std::shared_ptr<sdbusplus::asio::connection> dbus = getSdBus();
sdbusplus::message::message getObjectMessage =
dbus->new_method_call("xyz.openbmc_project.ObjectMapper",
"/xyz/openbmc_project/object_mapper",
"xyz.openbmc_project.ObjectMapper", "GetObject");
getObjectMessage.append(path, interfaces);
try
{
sdbusplus::message::message response = dbus->call(getObjectMessage);
response.read(interfacesResponse);
}
catch (const std::exception& e)
{
phosphor::logging::log<phosphor::logging::level::ERR>(
"Failed to GetObject", phosphor::logging::entry("PATH=%s", path),
phosphor::logging::entry("WHAT=%s", e.what()));
}
return interfacesResponse;
}
static inline std::map<std::string, DbusVariant>
getEntityManagerProperties(const char* path, const char* interface)
{
std::map<std::string, DbusVariant> properties;
std::shared_ptr<sdbusplus::asio::connection> dbus = getSdBus();
sdbusplus::message::message getProperties =
dbus->new_method_call("xyz.openbmc_project.EntityManager", path,
"org.freedesktop.DBus.Properties", "GetAll");
getProperties.append(interface);
try
{
sdbusplus::message::message response = dbus->call(getProperties);
response.read(properties);
}
catch (const std::exception& e)
{
phosphor::logging::log<phosphor::logging::level::ERR>(
"Failed to GetAll", phosphor::logging::entry("PATH=%s", path),
phosphor::logging::entry("INTF=%s", interface),
phosphor::logging::entry("WHAT=%s", e.what()));
}
return properties;
}
static inline const std::string* getSensorConfigurationInterface(
const std::map<std::string, std::vector<std::string>>&
sensorInterfacesResponse)
{
auto entityManagerService =
sensorInterfacesResponse.find("xyz.openbmc_project.EntityManager");
if (entityManagerService == sensorInterfacesResponse.end())
{
return nullptr;
}
// Find the fan configuration first (fans can have multiple configuration
// interfaces).
for (const auto& entry : entityManagerService->second)
{
if (entry == "xyz.openbmc_project.Configuration.AspeedFan" ||
entry == "xyz.openbmc_project.Configuration.I2CFan" ||
entry == "xyz.openbmc_project.Configuration.NuvotonFan")
{
return &entry;
}
}
for (const auto& entry : entityManagerService->second)
{
if (boost::algorithm::starts_with(entry,
"xyz.openbmc_project.Configuration."))
{
return &entry;
}
}
return nullptr;
}
// Follow Association properties for Sensor back to the Board dbus object to
// check for an EntityId and EntityInstance property.
static inline void updateIpmiFromAssociation(const std::string& path,
const SensorMap& sensorMap,
uint8_t& entityId,
uint8_t& entityInstance)
{
namespace fs = std::filesystem;
auto sensorAssociationObject =
sensorMap.find("xyz.openbmc_project.Association.Definitions");
if (sensorAssociationObject == sensorMap.end())
{
if constexpr (debug)
{
std::fprintf(stderr, "path=%s, no association interface found\n",
path.c_str());
}
return;
}
auto associationObject =
sensorAssociationObject->second.find("Associations");
if (associationObject == sensorAssociationObject->second.end())
{
if constexpr (debug)
{
std::fprintf(stderr, "path=%s, no association records found\n",
path.c_str());
}
return;
}
std::vector<Association> associationValues =
std::get<std::vector<Association>>(associationObject->second);
// loop through the Associations looking for the right one:
for (const auto& entry : associationValues)
{
// forward, reverse, endpoint
const std::string& forward = std::get<0>(entry);
const std::string& reverse = std::get<1>(entry);
const std::string& endpoint = std::get<2>(entry);
// We only currently concern ourselves with chassis+all_sensors.
if (!(forward == "chassis" && reverse == "all_sensors"))
{
continue;
}
// the endpoint is the board entry provided by
// Entity-Manager. so let's grab its properties if it has
// the right interface.
// just try grabbing the properties first.
std::map<std::string, DbusVariant> ipmiProperties =
getEntityManagerProperties(
endpoint.c_str(),
"xyz.openbmc_project.Inventory.Decorator.Ipmi");
auto entityIdProp = ipmiProperties.find("EntityId");
auto entityInstanceProp = ipmiProperties.find("EntityInstance");
if (entityIdProp != ipmiProperties.end())
{
entityId =
static_cast<uint8_t>(std::get<uint64_t>(entityIdProp->second));
}
if (entityInstanceProp != ipmiProperties.end())
{
entityInstance = static_cast<uint8_t>(
std::get<uint64_t>(entityInstanceProp->second));
}
// Now check the entity-manager entry for this sensor to see
// if it has its own value and use that instead.
//
// In theory, checking this first saves us from checking
// both, except in most use-cases identified, there won't be
// a per sensor override, so we need to always check both.
std::string sensorNameFromPath = fs::path(path).filename();
std::string sensorConfigPath = endpoint + "/" + sensorNameFromPath;
// Download the interfaces for the sensor from
// Entity-Manager to find the name of the configuration
// interface.
std::map<std::string, std::vector<std::string>>
sensorInterfacesResponse =
getObjectInterfaces(sensorConfigPath.c_str());
const std::string* configurationInterface =
getSensorConfigurationInterface(sensorInterfacesResponse);
// We didnt' find a configuration interface for this sensor, but we
// followed the Association property to get here, so we're done
// searching.
if (!configurationInterface)
{
break;
}
// We found a configuration interface.
std::map<std::string, DbusVariant> configurationProperties =
getEntityManagerProperties(sensorConfigPath.c_str(),
configurationInterface->c_str());
entityIdProp = configurationProperties.find("EntityId");
entityInstanceProp = configurationProperties.find("EntityInstance");
if (entityIdProp != configurationProperties.end())
{
entityId =
static_cast<uint8_t>(std::get<uint64_t>(entityIdProp->second));
}
if (entityInstanceProp != configurationProperties.end())
{
entityInstance = static_cast<uint8_t>(
std::get<uint64_t>(entityInstanceProp->second));
}
// stop searching Association records.
break;
} // end for Association vectors.
if constexpr (debug)
{
std::fprintf(stderr, "path=%s, entityId=%d, entityInstance=%d\n",
path.c_str(), entityId, entityInstance);
}
}
} // namespace ipmi