1 #pragma once 2 3 #include "pmbus.hpp" 4 5 #include <nlohmann/json.hpp> 6 #include <phosphor-logging/elog.hpp> 7 #include <phosphor-logging/log.hpp> 8 #include <sdbusplus/bus.hpp> 9 #include <string> 10 11 namespace phosphor 12 { 13 namespace power 14 { 15 namespace util 16 { 17 18 constexpr auto SYSTEMD_SERVICE = "org.freedesktop.systemd1"; 19 constexpr auto SYSTEMD_ROOT = "/org/freedesktop/systemd1"; 20 constexpr auto SYSTEMD_INTERFACE = "org.freedesktop.systemd1.Manager"; 21 constexpr auto POWEROFF_TARGET = "obmc-chassis-hard-poweroff@0.target"; 22 constexpr auto PROPERTY_INTF = "org.freedesktop.DBus.Properties"; 23 24 /** 25 * @brief Get the service name from the mapper for the 26 * interface and path passed in. 27 * 28 * @param[in] path - the D-Bus path name 29 * @param[in] interface - the D-Bus interface name 30 * @param[in] bus - the D-Bus object 31 * 32 * @return The service name 33 */ 34 std::string getService(const std::string& path, const std::string& interface, 35 sdbusplus::bus::bus& bus); 36 37 /** 38 * @brief Read a D-Bus property 39 * 40 * @param[in] interface - the interface the property is on 41 * @param[in] propertName - the name of the property 42 * @param[in] path - the D-Bus path 43 * @param[in] service - the D-Bus service 44 * @param[in] bus - the D-Bus object 45 * @param[out] value - filled in with the property value 46 */ 47 template <typename T> 48 void getProperty(const std::string& interface, const std::string& propertyName, 49 const std::string& path, const std::string& service, 50 sdbusplus::bus::bus& bus, T& value) 51 { 52 sdbusplus::message::variant<T> property; 53 54 auto method = bus.new_method_call(service.c_str(), path.c_str(), 55 PROPERTY_INTF, "Get"); 56 57 method.append(interface, propertyName); 58 59 auto reply = bus.call(method); 60 61 reply.read(property); 62 value = sdbusplus::message::variant_ns::get<T>(property); 63 } 64 65 /** 66 * @brief Write a D-Bus property 67 * 68 * @param[in] interface - the interface the property is on 69 * @param[in] propertName - the name of the property 70 * @param[in] path - the D-Bus path 71 * @param[in] service - the D-Bus service 72 * @param[in] bus - the D-Bus object 73 * @param[in] value - the value to set the property to 74 */ 75 template <typename T> 76 void setProperty(const std::string& interface, const std::string& propertyName, 77 const std::string& path, const std::string& service, 78 sdbusplus::bus::bus& bus, T& value) 79 { 80 sdbusplus::message::variant<T> propertyValue(value); 81 82 auto method = bus.new_method_call(service.c_str(), path.c_str(), 83 PROPERTY_INTF, "Set"); 84 85 method.append(interface, propertyName, propertyValue); 86 87 auto reply = bus.call(method); 88 } 89 90 /** 91 * Logs an error and powers off the system. 92 * 93 * @tparam T - error that will be logged before the power off 94 * @param[in] bus - D-Bus object 95 */ 96 template <typename T> 97 void powerOff(sdbusplus::bus::bus& bus) 98 { 99 phosphor::logging::report<T>(); 100 101 auto method = bus.new_method_call(SYSTEMD_SERVICE, SYSTEMD_ROOT, 102 SYSTEMD_INTERFACE, "StartUnit"); 103 104 method.append(POWEROFF_TARGET); 105 method.append("replace"); 106 107 bus.call_noreply(method); 108 } 109 110 /** 111 * Load json from a file 112 * 113 * @param[in] path - The path of the json file 114 * 115 * @return The nlohmann::json object 116 */ 117 nlohmann::json loadJSONFromFile(const char* path); 118 119 /** 120 * Get PmBus access type from the json config 121 * 122 * @param[in] json - The json object 123 * 124 * @return The pmbus access type 125 */ 126 phosphor::pmbus::Type getPMBusAccessType(const nlohmann::json& json); 127 128 /** 129 * Check if power is on 130 * 131 * @return true if power is on, otherwise false 132 */ 133 bool isPoweredOn(sdbusplus::bus::bus& bus); 134 135 } // namespace util 136 } // namespace power 137 } // namespace phosphor 138