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 /* The configuration converted sensor list. */ 53 std::map<std::string, struct conf::SensorConfig> sensorConfig = {}; 54 /* The configuration converted PID list. */ 55 std::map<int64_t, conf::PIDConf> zoneConfig = {}; 56 /* The configuration converted Zone configuration. */ 57 std::map<int64_t, struct conf::ZoneConfig> zoneDetailsConfig = {}; 58 59 /** the swampd daemon will check for the existence of this file. */ 60 constexpr auto jsonConfigurationPath = "/usr/share/swampd/config.json"; 61 std::string configPath = ""; 62 63 /* async io context for operation */ 64 boost::asio::io_context io; 65 66 /* buses for system control */ 67 static sdbusplus::asio::connection modeControlBus(io); 68 static sdbusplus::asio::connection 69 hostBus(io, sdbusplus::bus::new_system().release()); 70 static sdbusplus::asio::connection 71 passiveBus(io, sdbusplus::bus::new_system().release()); 72 73 void restartControlLoops() 74 { 75 static SensorManager mgmr; 76 static std::unordered_map<int64_t, std::unique_ptr<PIDZone>> zones; 77 static std::list<boost::asio::steady_timer> timers; 78 79 timers.clear(); 80 81 #if CONFIGURE_DBUS 82 83 static boost::asio::steady_timer reloadTimer(io); 84 if (!dbus_configuration::init(modeControlBus, reloadTimer)) 85 { 86 return; // configuration not ready 87 } 88 89 #else 90 const std::string& path = 91 (configPath.length() > 0) ? configPath : jsonConfigurationPath; 92 93 /* 94 * When building the sensors, if any of the dbus passive ones aren't on the 95 * bus, it'll fail immediately. 96 */ 97 try 98 { 99 auto jsonData = parseValidateJson(path); 100 sensorConfig = buildSensorsFromJson(jsonData); 101 std::tie(zoneConfig, zoneDetailsConfig) = buildPIDsFromJson(jsonData); 102 } 103 catch (const std::exception& e) 104 { 105 std::cerr << "Failed during building: " << e.what() << "\n"; 106 exit(EXIT_FAILURE); /* fatal error. */ 107 } 108 #endif 109 110 mgmr = buildSensors(sensorConfig, passiveBus, hostBus); 111 zones = buildZones(zoneConfig, zoneDetailsConfig, mgmr, modeControlBus); 112 113 if (0 == zones.size()) 114 { 115 std::cerr << "No zones defined, exiting.\n"; 116 std::exit(EXIT_FAILURE); 117 } 118 119 for (const auto& i : zones) 120 { 121 auto& timer = timers.emplace_back(io); 122 std::cerr << "pushing zone " << i.first << "\n"; 123 pidControlLoop(i.second.get(), timer); 124 } 125 } 126 127 void tryRestartControlLoops() 128 { 129 int count = 0; 130 for (count = 0; count <= 5; count++) 131 { 132 try 133 { 134 restartControlLoops(); 135 break; 136 } 137 catch (const std::exception& e) 138 { 139 std::cerr << count 140 << " Failed during restartControlLoops, try again: " 141 << e.what() << "\n"; 142 if (count >= 5) 143 { 144 throw std::runtime_error(e.what()); 145 } 146 } 147 std::this_thread::sleep_for(std::chrono::seconds(10)); 148 } 149 150 return; 151 } 152 153 int main(int argc, char* argv[]) 154 { 155 loggingPath = ""; 156 loggingEnabled = false; 157 tuningEnabled = false; 158 159 CLI::App app{"OpenBMC Fan Control Daemon"}; 160 161 app.add_option("-c,--conf", configPath, 162 "Optional parameter to specify configuration at run-time") 163 ->check(CLI::ExistingFile); 164 app.add_option("-l,--log", loggingPath, 165 "Optional parameter to specify logging folder") 166 ->check(CLI::ExistingDirectory); 167 app.add_flag("-t,--tuning", tuningEnabled, "Enable or disable tuning"); 168 169 CLI11_PARSE(app, argc, argv); 170 171 loggingEnabled = (!loggingPath.empty()); 172 173 static constexpr auto modeRoot = "/xyz/openbmc_project/settings/fanctrl"; 174 // Create a manager for the ModeBus because we own it. 175 sdbusplus::server::manager::manager( 176 static_cast<sdbusplus::bus::bus&>(modeControlBus), modeRoot); 177 hostBus.request_name("xyz.openbmc_project.Hwmon.external"); 178 modeControlBus.request_name("xyz.openbmc_project.State.FanCtrl"); 179 180 /* 181 * All sensors are managed by one manager, but each zone has a pointer to 182 * it. 183 */ 184 185 tryRestartControlLoops(); 186 187 io.run(); 188 return 0; 189 } 190