1 /** 2 * Copyright © 2017 IBM Corporation 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 #include "utility.hpp" 17 18 #include "types.hpp" 19 20 #include <fstream> 21 22 namespace phosphor 23 { 24 namespace power 25 { 26 namespace util 27 { 28 29 constexpr auto MAPPER_BUSNAME = "xyz.openbmc_project.ObjectMapper"; 30 constexpr auto MAPPER_PATH = "/xyz/openbmc_project/object_mapper"; 31 constexpr auto MAPPER_INTERFACE = "xyz.openbmc_project.ObjectMapper"; 32 33 using namespace phosphor::logging; 34 using json = nlohmann::json; 35 36 std::string getService(const std::string& path, const std::string& interface, 37 sdbusplus::bus::bus& bus, bool logError) 38 { 39 auto method = bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH, 40 MAPPER_INTERFACE, "GetObject"); 41 42 method.append(path); 43 method.append(std::vector<std::string>({interface})); 44 45 auto reply = bus.call(method); 46 47 std::map<std::string, std::vector<std::string>> response; 48 reply.read(response); 49 50 if (response.empty()) 51 { 52 if (logError) 53 { 54 log<level::ERR>( 55 std::string("Error in mapper response for getting service name " 56 "PATH=" + 57 path + " INTERFACE=" + interface) 58 .c_str()); 59 } 60 return std::string{}; 61 } 62 63 return response.begin()->first; 64 } 65 66 DbusPropertyMap getAllProperties(sdbusplus::bus::bus& bus, 67 const std::string& path, 68 const std::string& interface, 69 const std::string& service) 70 { 71 DbusPropertyMap properties; 72 73 auto serviceStr = service; 74 if (serviceStr.empty()) 75 { 76 serviceStr = getService(path, interface, bus); 77 if (serviceStr.empty()) 78 { 79 return properties; 80 } 81 } 82 83 auto method = bus.new_method_call(serviceStr.c_str(), path.c_str(), 84 PROPERTY_INTF, "GetAll"); 85 method.append(interface); 86 auto reply = bus.call(method); 87 reply.read(properties); 88 return properties; 89 } 90 91 DbusSubtree getSubTree(sdbusplus::bus::bus& bus, const std::string& path, 92 const std::string& interface, int32_t depth) 93 { 94 auto mapperCall = bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH, 95 MAPPER_INTERFACE, "GetSubTree"); 96 mapperCall.append(path); 97 mapperCall.append(depth); 98 mapperCall.append(std::vector<std::string>({interface})); 99 100 auto reply = bus.call(mapperCall); 101 102 DbusSubtree response; 103 reply.read(response); 104 return response; 105 } 106 107 json loadJSONFromFile(const char* path) 108 { 109 std::ifstream ifs(path); 110 if (!ifs.good()) 111 { 112 log<level::ERR>(std::string("Unable to open file " 113 "PATH=" + 114 std::string(path)) 115 .c_str()); 116 return nullptr; 117 } 118 auto data = json::parse(ifs, nullptr, false); 119 if (data.is_discarded()) 120 { 121 log<level::ERR>(std::string("Failed to parse json " 122 "PATH=" + 123 std::string(path)) 124 .c_str()); 125 return nullptr; 126 } 127 return data; 128 } 129 130 phosphor::pmbus::Type getPMBusAccessType(const json& json) 131 { 132 using namespace phosphor::pmbus; 133 Type type; 134 135 auto typeStr = json.at("inventoryPMBusAccessType"); 136 137 if (typeStr == "Hwmon") 138 { 139 type = Type::Hwmon; 140 } 141 else if (typeStr == "DeviceDebug") 142 { 143 type = Type::DeviceDebug; 144 } 145 else if (typeStr == "Debug") 146 { 147 type = Type::Debug; 148 } 149 else if (typeStr == "HwmonDeviceDebug") 150 { 151 type = Type::HwmonDeviceDebug; 152 } 153 else 154 { 155 type = Type::Base; 156 } 157 return type; 158 } 159 160 bool isPoweredOn(sdbusplus::bus::bus& bus, bool defaultState) 161 { 162 int32_t state = defaultState; 163 164 try 165 { 166 // When state = 1, system is powered on 167 auto service = util::getService(POWER_OBJ_PATH, POWER_IFACE, bus); 168 getProperty<int32_t>(POWER_IFACE, "state", POWER_OBJ_PATH, service, bus, 169 state); 170 } 171 catch (const std::exception& e) 172 { 173 log<level::INFO>("Failed to get power state."); 174 } 175 return state != 0; 176 } 177 178 std::vector<std::string> getPSUInventoryPaths(sdbusplus::bus::bus& bus) 179 { 180 std::vector<std::string> paths; 181 auto method = bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH, 182 MAPPER_INTERFACE, "GetSubTreePaths"); 183 method.append(INVENTORY_OBJ_PATH); 184 method.append(0); // Depth 0 to search all 185 method.append(std::vector<std::string>({PSU_INVENTORY_IFACE})); 186 auto reply = bus.call(method); 187 188 reply.read(paths); 189 return paths; 190 } 191 192 } // namespace util 193 } // namespace power 194 } // namespace phosphor 195