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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 <chrono>
#include <conf.hpp>
#include <dbus/util.hpp>
#include <functional>
#include <iostream>
#include <sdbusplus/bus.hpp>
#include <sdbusplus/bus/match.hpp>
#include <set>
#include <thread>
#include <unordered_map>
static constexpr bool DEBUG = false; // enable to print found configuration
std::map<std::string, struct sensor> SensorConfig = {};
std::map<int64_t, PIDConf> ZoneConfig = {};
std::map<int64_t, struct zone> ZoneDetailsConfig = {};
constexpr const char *pidConfigurationInterface =
"xyz.openbmc_project.Configuration.Pid";
constexpr const char *objectManagerInterface =
"org.freedesktop.DBus.ObjectManager";
constexpr const char *pidZoneConfigurationInterface =
"xyz.openbmc_project.Configuration.Pid.Zone";
constexpr const char *sensorInterface = "xyz.openbmc_project.Sensor.Value";
constexpr const char *pwmInterface = "xyz.openbmc_project.Control.FanPwm";
namespace dbus_configuration
{
bool findSensor(const std::unordered_map<std::string, std::string> &sensors,
const std::string &search,
std::pair<std::string, std::string> &sensor)
{
for (const auto &s : sensors)
{
if (s.first.find(search) != std::string::npos)
{
sensor = s;
return true;
}
}
return false;
}
// this function prints the configuration into a form similar to the cpp
// generated code to help in verification, should be turned off during normal
// use
void debugPrint(void)
{
// print sensor config
std::cout << "sensor config:\n";
std::cout << "{\n";
for (auto &pair : SensorConfig)
{
std::cout << "\t{" << pair.first << ",\n\t\t{";
std::cout << pair.second.type << ", ";
std::cout << pair.second.readpath << ", ";
std::cout << pair.second.writepath << ", ";
std::cout << pair.second.min << ", ";
std::cout << pair.second.max << ", ";
std::cout << pair.second.timeout << "},\n\t},\n";
}
std::cout << "}\n\n";
std::cout << "ZoneDetailsConfig\n";
std::cout << "{\n";
for (auto &zone : ZoneDetailsConfig)
{
std::cout << "\t{" << zone.first << ",\n";
std::cout << "\t\t{" << zone.second.minthermalrpm << ", ";
std::cout << zone.second.failsafepercent << "}\n\t},\n";
}
std::cout << "}\n\n";
std::cout << "ZoneConfig\n";
std::cout << "{\n";
for (auto &zone : ZoneConfig)
{
std::cout << "\t{" << zone.first << "\n";
for (auto &pidconf : zone.second)
{
std::cout << "\t\t{" << pidconf.first << ",\n";
std::cout << "\t\t\t{" << pidconf.second.type << ",\n";
std::cout << "\t\t\t{";
for (auto &input : pidconf.second.inputs)
{
std::cout << "\n\t\t\t" << input << ",\n";
}
std::cout << "\t\t\t}\n";
std::cout << "\t\t\t" << pidconf.second.setpoint << ",\n";
std::cout << "\t\t\t{" << pidconf.second.info.ts << ",\n";
std::cout << "\t\t\t" << pidconf.second.info.p_c << ",\n";
std::cout << "\t\t\t" << pidconf.second.info.i_c << ",\n";
std::cout << "\t\t\t" << pidconf.second.info.ff_off << ",\n";
std::cout << "\t\t\t" << pidconf.second.info.ff_gain << ",\n";
std::cout << "\t\t\t{" << pidconf.second.info.i_lim.min << ","
<< pidconf.second.info.i_lim.max << "},\n";
std::cout << "\t\t\t{" << pidconf.second.info.out_lim.min << ","
<< pidconf.second.info.out_lim.max << "},\n";
std::cout << "\t\t\t" << pidconf.second.info.slew_neg << ",\n";
std::cout << "\t\t\t" << pidconf.second.info.slew_pos << ",\n";
std::cout << "\t\t\t}\n\t\t}\n";
}
std::cout << "\t},\n";
}
std::cout << "}\n\n";
}
void init(sdbusplus::bus::bus &bus)
{
using ManagedObjectType = std::unordered_map<
sdbusplus::message::object_path,
std::unordered_map<
std::string,
std::unordered_map<std::string,
sdbusplus::message::variant<
uint64_t, int64_t, double, std::string,
std::vector<std::string>>>>>;
// install watch for properties changed
std::function<void(sdbusplus::message::message & message)> eventHandler =
[](const sdbusplus::message::message &) {
// do a brief sleep as we tend to get a bunch of these events at
// once
std::this_thread::sleep_for(std::chrono::seconds(5));
std::cout << "New configuration detected, restarting\n.";
std::exit(EXIT_SUCCESS); // service file should make us restart
};
static sdbusplus::bus::match::match match(
bus,
"type='signal',member='PropertiesChanged',arg0namespace='" +
std::string(pidConfigurationInterface) + "'",
eventHandler);
auto mapper =
bus.new_method_call("xyz.openbmc_project.ObjectMapper",
"/xyz/openbmc_project/object_mapper",
"xyz.openbmc_project.ObjectMapper", "GetSubTree");
mapper.append("", 0,
std::array<const char *, 5>{objectManagerInterface,
pidConfigurationInterface,
pidZoneConfigurationInterface,
sensorInterface, pwmInterface});
auto resp = bus.call(mapper);
if (resp.is_method_error())
{
throw std::runtime_error("ObjectMapper Call Failure");
}
std::unordered_map<
std::string, std::unordered_map<std::string, std::vector<std::string>>>
respData;
resp.read(respData);
if (respData.empty())
{
throw std::runtime_error("No configuration data available from Mapper");
}
// create a map of pair of <has pid configuration, ObjectManager path>
std::unordered_map<std::string, std::pair<bool, std::string>> owners;
// and a map of <path, interface> for sensors
std::unordered_map<std::string, std::string> sensors;
for (const auto &objectPair : respData)
{
for (const auto &ownerPair : objectPair.second)
{
auto &owner = owners[ownerPair.first];
for (const std::string &interface : ownerPair.second)
{
if (interface == objectManagerInterface)
{
owner.second = objectPair.first;
}
if (interface == pidConfigurationInterface ||
interface == pidZoneConfigurationInterface)
{
owner.first = true;
}
if (interface == sensorInterface || interface == pwmInterface)
{
// we're not interested in pwm sensors, just pwm control
if (interface == sensorInterface &&
objectPair.first.find("pwm") != std::string::npos)
{
continue;
}
sensors[objectPair.first] = interface;
}
}
}
}
ManagedObjectType configurations;
for (const auto &owner : owners)
{
// skip if no pid configuration (means probably a sensor)
if (!owner.second.first)
{
continue;
}
auto endpoint = bus.new_method_call(
owner.first.c_str(), owner.second.second.c_str(),
"org.freedesktop.DBus.ObjectManager", "GetManagedObjects");
auto responce = bus.call(endpoint);
if (responce.is_method_error())
{
throw std::runtime_error("Error getting managed objects from " +
owner.first);
}
ManagedObjectType configuration;
responce.read(configuration);
for (auto &pathPair : configuration)
{
if (pathPair.second.find(pidConfigurationInterface) !=
pathPair.second.end() ||
pathPair.second.find(pidZoneConfigurationInterface) !=
pathPair.second.end())
{
configurations.emplace(pathPair);
}
}
}
for (const auto &configuration : configurations)
{
auto findZone =
configuration.second.find(pidZoneConfigurationInterface);
if (findZone != configuration.second.end())
{
const auto &zone = findZone->second;
auto &details =
ZoneDetailsConfig[sdbusplus::message::variant_ns::get<uint64_t>(
zone.at("Index"))];
details.minthermalrpm = mapbox::util::apply_visitor(
VariantToFloatVisitor(), zone.at("MinThermalRpm"));
details.failsafepercent = mapbox::util::apply_visitor(
VariantToFloatVisitor(), zone.at("FailSafePercent"));
}
auto findBase = configuration.second.find(pidConfigurationInterface);
if (findBase == configuration.second.end())
{
continue;
}
// if the base configuration is found, these are required
const auto &base = configuration.second.at(pidConfigurationInterface);
const auto &iLim = configuration.second.at(pidConfigurationInterface +
std::string(".ILimit"));
const auto &outLim = configuration.second.at(pidConfigurationInterface +
std::string(".OutLimit"));
PIDConf &conf =
ZoneConfig[sdbusplus::message::variant_ns::get<uint64_t>(
base.at("Index"))];
struct controller_info &info =
conf[sdbusplus::message::variant_ns::get<std::string>(
base.at("Name"))];
info.type =
sdbusplus::message::variant_ns::get<std::string>(base.at("Class"));
// todo: auto generation yaml -> c script seems to discard this value
// for fans, verify this is okay
if (info.type == "fan")
{
info.setpoint = 0;
}
else
{
info.setpoint = mapbox::util::apply_visitor(VariantToFloatVisitor(),
base.at("SetPoint"));
}
info.info.ts = 1.0; // currently unused
info.info.p_c = mapbox::util::apply_visitor(VariantToFloatVisitor(),
base.at("PCoefficient"));
info.info.i_c = mapbox::util::apply_visitor(VariantToFloatVisitor(),
base.at("ICoefficient"));
info.info.ff_off = mapbox::util::apply_visitor(
VariantToFloatVisitor(), base.at("FFOffCoefficient"));
info.info.ff_gain = mapbox::util::apply_visitor(
VariantToFloatVisitor(), base.at("FFGainCoefficient"));
auto value = mapbox::util::apply_visitor(VariantToFloatVisitor(),
iLim.at("Max"));
info.info.i_lim.max = value;
info.info.i_lim.min = mapbox::util::apply_visitor(
VariantToFloatVisitor(), iLim.at("Min"));
info.info.out_lim.max = mapbox::util::apply_visitor(
VariantToFloatVisitor(), outLim.at("Max"));
info.info.out_lim.min = mapbox::util::apply_visitor(
VariantToFloatVisitor(), outLim.at("Min"));
info.info.slew_neg = mapbox::util::apply_visitor(
VariantToFloatVisitor(), base.at("SlewNeg"));
info.info.slew_pos = mapbox::util::apply_visitor(
VariantToFloatVisitor(), base.at("SlewPos"));
std::pair<std::string, std::string> sensorPathIfacePair;
std::vector<std::string> sensorNames =
sdbusplus::message::variant_ns::get<std::vector<std::string>>(
base.at("Inputs"));
for (const std::string &sensorName : sensorNames)
{
std::string name = sensorName;
// replace spaces with underscores to be legal on dbus
std::replace(name.begin(), name.end(), ' ', '_');
if (!findSensor(sensors, name, sensorPathIfacePair))
{
throw std::runtime_error(
"Could not map configuration to sensor " + name);
}
if (sensorPathIfacePair.second == sensorInterface)
{
info.inputs.push_back(name);
auto &config = SensorConfig[name];
config.type = sdbusplus::message::variant_ns::get<std::string>(
base.at("Class"));
config.readpath = sensorPathIfacePair.first;
// todo: maybe un-hardcode this if we run into slower timeouts
// with sensors
if (config.type == "temp")
{
config.timeout = 500;
}
}
if (sensorPathIfacePair.second == pwmInterface)
{
// copy so we can modify it
for (std::string otherSensor : sensorNames)
{
if (otherSensor == sensorName)
{
continue;
}
std::replace(otherSensor.begin(), otherSensor.end(), ' ',
'_');
auto &config = SensorConfig[otherSensor];
config.writepath = sensorPathIfacePair.first;
// todo: un-hardcode this if there are fans with different
// ranges
config.max = 255;
config.min = 0;
}
}
}
}
if (DEBUG)
{
debugPrint();
}
}
} // namespace dbus_configuration