1 /** 2 * Copyright 2017 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "config.h" 18 19 #include "build/buildjson.hpp" 20 #include "conf.hpp" 21 #include "interfaces.hpp" 22 #include "pid/builder.hpp" 23 #include "pid/buildjson.hpp" 24 #include "pid/pidloop.hpp" 25 #include "pid/tuning.hpp" 26 #include "pid/zone.hpp" 27 #include "sensors/builder.hpp" 28 #include "sensors/buildjson.hpp" 29 #include "sensors/manager.hpp" 30 #include "util.hpp" 31 32 #include <CLI/CLI.hpp> 33 #include <boost/asio/io_context.hpp> 34 #include <boost/asio/steady_timer.hpp> 35 #include <sdbusplus/asio/connection.hpp> 36 #include <sdbusplus/bus.hpp> 37 38 #include <chrono> 39 #include <iostream> 40 #include <list> 41 #include <map> 42 #include <memory> 43 #include <thread> 44 #include <unordered_map> 45 #include <utility> 46 #include <vector> 47 48 #if CONFIGURE_DBUS 49 #include "dbus/dbusconfiguration.hpp" 50 #endif 51 52 namespace pid_control 53 { 54 55 /* The configuration converted sensor list. */ 56 std::map<std::string, struct conf::SensorConfig> sensorConfig = {}; 57 /* The configuration converted PID list. */ 58 std::map<int64_t, conf::PIDConf> zoneConfig = {}; 59 /* The configuration converted Zone configuration. */ 60 std::map<int64_t, struct conf::ZoneConfig> zoneDetailsConfig = {}; 61 62 } // namespace pid_control 63 64 /** the swampd daemon will check for the existence of this file. */ 65 constexpr auto jsonConfigurationPath = "/usr/share/swampd/config.json"; 66 std::string configPath = ""; 67 68 /* async io context for operation */ 69 boost::asio::io_context io; 70 71 /* buses for system control */ 72 static sdbusplus::asio::connection modeControlBus(io); 73 static sdbusplus::asio::connection 74 hostBus(io, sdbusplus::bus::new_system().release()); 75 static sdbusplus::asio::connection 76 passiveBus(io, sdbusplus::bus::new_system().release()); 77 78 namespace pid_control 79 { 80 81 void restartControlLoops() 82 { 83 static SensorManager mgmr; 84 static std::unordered_map<int64_t, std::unique_ptr<ZoneInterface>> zones; 85 static std::list<boost::asio::steady_timer> timers; 86 87 timers.clear(); 88 89 #if CONFIGURE_DBUS 90 91 static boost::asio::steady_timer reloadTimer(io); 92 if (!dbus_configuration::init(modeControlBus, reloadTimer)) 93 { 94 return; // configuration not ready 95 } 96 97 #else 98 const std::string& path = 99 (configPath.length() > 0) ? configPath : jsonConfigurationPath; 100 101 /* 102 * When building the sensors, if any of the dbus passive ones aren't on the 103 * bus, it'll fail immediately. 104 */ 105 try 106 { 107 auto jsonData = parseValidateJson(path); 108 sensorConfig = buildSensorsFromJson(jsonData); 109 std::tie(zoneConfig, zoneDetailsConfig) = buildPIDsFromJson(jsonData); 110 } 111 catch (const std::exception& e) 112 { 113 std::cerr << "Failed during building: " << e.what() << "\n"; 114 exit(EXIT_FAILURE); /* fatal error. */ 115 } 116 #endif 117 118 mgmr = buildSensors(sensorConfig, passiveBus, hostBus); 119 zones = buildZones(zoneConfig, zoneDetailsConfig, mgmr, modeControlBus); 120 121 if (0 == zones.size()) 122 { 123 std::cerr << "No zones defined, exiting.\n"; 124 std::exit(EXIT_FAILURE); 125 } 126 127 for (const auto& i : zones) 128 { 129 auto& timer = timers.emplace_back(io); 130 std::cerr << "pushing zone " << i.first << "\n"; 131 pidControlLoop(i.second.get(), timer); 132 } 133 } 134 135 void tryRestartControlLoops() 136 { 137 int count = 0; 138 for (count = 0; count <= 5; count++) 139 { 140 try 141 { 142 restartControlLoops(); 143 break; 144 } 145 catch (const std::exception& e) 146 { 147 std::cerr << count 148 << " Failed during restartControlLoops, try again: " 149 << e.what() << "\n"; 150 if (count >= 5) 151 { 152 throw std::runtime_error(e.what()); 153 } 154 } 155 std::this_thread::sleep_for(std::chrono::seconds(10)); 156 } 157 158 return; 159 } 160 161 } // namespace pid_control 162 163 int main(int argc, char* argv[]) 164 { 165 loggingPath = ""; 166 loggingEnabled = false; 167 tuningEnabled = false; 168 169 CLI::App app{"OpenBMC Fan Control Daemon"}; 170 171 app.add_option("-c,--conf", configPath, 172 "Optional parameter to specify configuration at run-time") 173 ->check(CLI::ExistingFile); 174 app.add_option("-l,--log", loggingPath, 175 "Optional parameter to specify logging folder") 176 ->check(CLI::ExistingDirectory); 177 app.add_flag("-t,--tuning", tuningEnabled, "Enable or disable tuning"); 178 179 CLI11_PARSE(app, argc, argv); 180 181 loggingEnabled = (!loggingPath.empty()); 182 183 static constexpr auto modeRoot = "/xyz/openbmc_project/settings/fanctrl"; 184 // Create a manager for the ModeBus because we own it. 185 sdbusplus::server::manager::manager( 186 static_cast<sdbusplus::bus::bus&>(modeControlBus), modeRoot); 187 hostBus.request_name("xyz.openbmc_project.Hwmon.external"); 188 modeControlBus.request_name("xyz.openbmc_project.State.FanCtrl"); 189 190 /* 191 * All sensors are managed by one manager, but each zone has a pointer to 192 * it. 193 */ 194 195 pid_control::tryRestartControlLoops(); 196 197 io.run(); 198 return 0; 199 } 200