1 #include "usb_port.hpp"
2
3 #include "common/entity_manager_interface.hpp"
4 #include "port_factory.hpp"
5
6 #include <fcntl.h>
7
8 #include <phosphor-logging/lg2.hpp>
9 #include <xyz/openbmc_project/Configuration/USBPort/client.hpp>
10
11 #include <filesystem>
12 #include <format>
13 #include <optional>
14 #include <regex>
15
16 namespace phosphor::modbus::rtu::port
17 {
18
19 PHOSPHOR_LOG2_USING;
20
21 using USBPortConfigIntf =
22 sdbusplus::client::xyz::openbmc_project::configuration::USBPort<>;
23
24 namespace config
25 {
26
27 struct USBPortConfig : public PortFactoryConfig
28 {
29 std::string address = "unknown";
30 uint16_t port = 0;
31 uint16_t interface = 0;
32
33 virtual ~USBPortConfig() = default;
34 };
35
36 } // namespace config
37
getDevicePath(const config::PortFactoryConfig & inConfig)38 static auto getDevicePath(const config::PortFactoryConfig& inConfig)
39 -> std::string
40 {
41 namespace fs = std::filesystem;
42 auto config = static_cast<const config::USBPortConfig&>(inConfig);
43
44 std::regex pattern(
45 std::format("platform-{}\\.usb-usb.*{}-port{}", config.address,
46 config.interface, config.port));
47 fs::path searchDir = "/dev/serial/by-path/";
48
49 for (const auto& entry : fs::recursive_directory_iterator(searchDir))
50 {
51 if (entry.is_symlink())
52 {
53 auto filePath = entry.path();
54 if (std::regex_search(filePath.filename().string(), pattern))
55 {
56 return ("/dev/" +
57 fs::read_symlink(filePath).filename().string());
58 }
59 }
60 }
61
62 throw std::runtime_error("Failed to get device path");
63 }
64
USBPort(sdbusplus::async::context & ctx,const config::PortFactoryConfig & config)65 USBPort::USBPort(sdbusplus::async::context& ctx,
66 const config::PortFactoryConfig& config) :
67 BasePort(ctx, config, getDevicePath(config))
68 {
69 info("USB port {NAME} created successfully", "NAME", config.name);
70 }
71
getConfig(sdbusplus::async::context & ctx,const sdbusplus::message::object_path & objectPath)72 auto USBPort::getConfig(sdbusplus::async::context& ctx,
73 const sdbusplus::message::object_path& objectPath)
74 -> sdbusplus::async::task<std::unique_ptr<config::PortFactoryConfig>>
75 {
76 auto config = std::make_unique<config::USBPortConfig>();
77 if (!config)
78 {
79 co_return std::nullptr_t();
80 }
81
82 auto properties =
83 co_await USBPortConfigIntf(ctx)
84 .service(entity_manager::EntityManagerInterface::serviceName)
85 .path(objectPath.str)
86 .properties();
87
88 auto res = updateBaseConfig(*config, properties);
89 if (!res)
90 {
91 co_return std::nullptr_t();
92 }
93
94 config->address = properties.device_address;
95 config->port = properties.port;
96 config->interface = properties.device_interface;
97 config->portType = config::PortType::usb;
98
99 debug(
100 "USB port config: {NAME} {PORT_TYPE} {PORT_MODE} {ADDRESS} {PORT} {INTERFACE} {BAUD_RATE} {RTS_DELAY}",
101 "NAME", config->name, "PORT_TYPE", config->portType, "PORT_MODE",
102 config->portMode, "ADDRESS", config->address, "PORT", config->port,
103 "INTERFACE", config->interface, "BAUD_RATE", config->baudRate,
104 "RTS_DELAY", config->rtsDelay);
105
106 co_return config;
107 }
108
109 } // namespace phosphor::modbus::rtu::port
110