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 DbusSubtree getSubTree(sdbusplus::bus::bus& bus, const std::string& path, 67 const std::string& interface, int32_t depth) 68 { 69 auto mapperCall = bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH, 70 MAPPER_INTERFACE, "GetSubTree"); 71 mapperCall.append(path); 72 mapperCall.append(depth); 73 mapperCall.append(std::vector<std::string>({interface})); 74 75 auto reply = bus.call(mapperCall); 76 77 DbusSubtree response; 78 reply.read(response); 79 return response; 80 } 81 82 json loadJSONFromFile(const char* path) 83 { 84 std::ifstream ifs(path); 85 if (!ifs.good()) 86 { 87 log<level::ERR>(std::string("Unable to open file " 88 "PATH=" + 89 std::string(path)) 90 .c_str()); 91 return nullptr; 92 } 93 auto data = json::parse(ifs, nullptr, false); 94 if (data.is_discarded()) 95 { 96 log<level::ERR>(std::string("Failed to parse json " 97 "PATH=" + 98 std::string(path)) 99 .c_str()); 100 return nullptr; 101 } 102 return data; 103 } 104 105 phosphor::pmbus::Type getPMBusAccessType(const json& json) 106 { 107 using namespace phosphor::pmbus; 108 Type type; 109 110 auto typeStr = json.at("inventoryPMBusAccessType"); 111 112 if (typeStr == "Hwmon") 113 { 114 type = Type::Hwmon; 115 } 116 else if (typeStr == "DeviceDebug") 117 { 118 type = Type::DeviceDebug; 119 } 120 else if (typeStr == "Debug") 121 { 122 type = Type::Debug; 123 } 124 else if (typeStr == "HwmonDeviceDebug") 125 { 126 type = Type::HwmonDeviceDebug; 127 } 128 else 129 { 130 type = Type::Base; 131 } 132 return type; 133 } 134 135 bool isPoweredOn(sdbusplus::bus::bus& bus, bool defaultState) 136 { 137 int32_t state = defaultState; 138 139 try 140 { 141 // When state = 1, system is powered on 142 auto service = util::getService(POWER_OBJ_PATH, POWER_IFACE, bus); 143 getProperty<int32_t>(POWER_IFACE, "state", POWER_OBJ_PATH, service, bus, 144 state); 145 } 146 catch (std::exception& e) 147 { 148 log<level::INFO>("Failed to get power state."); 149 } 150 return state != 0; 151 } 152 153 std::vector<std::string> getPSUInventoryPaths(sdbusplus::bus::bus& bus) 154 { 155 std::vector<std::string> paths; 156 auto method = bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH, 157 MAPPER_INTERFACE, "GetSubTreePaths"); 158 method.append(INVENTORY_OBJ_PATH); 159 method.append(0); // Depth 0 to search all 160 method.append(std::vector<std::string>({PSU_INVENTORY_IFACE})); 161 auto reply = bus.call(method); 162 163 reply.read(paths); 164 return paths; 165 } 166 167 } // namespace util 168 } // namespace power 169 } // namespace phosphor 170