redfish-core/lib/pcie.hpp

/*
// Copyright (c) 2018 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/

#pragma once

#include "node.hpp"

#include <boost/system/linux_error.hpp>

namespace redfish
{

static constexpr char const *pcieService = "xyz.openbmc_project.PCIe";
static constexpr char const *pciePath = "/xyz/openbmc_project/PCIe";
static constexpr char const *pcieDeviceInterface =
    "xyz.openbmc_project.PCIe.Device";

static inline void getPCIeDeviceList(std::shared_ptr<AsyncResp> asyncResp)
{
    auto getPCIeMapCallback =
        [asyncResp](const boost::system::error_code ec,
                    std::vector<std::string> &pcieDevicePaths) {
            if (ec)
            {
                BMCWEB_LOG_DEBUG << "no PCIe device paths found ec: "
                                 << ec.message();
                // Not an error, system just doesn't have PCIe info
                return;
            }
            nlohmann::json &pcieDeviceList =
                asyncResp->res.jsonValue["PCIeDevices"];
            pcieDeviceList = nlohmann::json::array();
            for (const std::string &pcieDevicePath : pcieDevicePaths)
            {
                size_t devStart = pcieDevicePath.rfind("/");
                if (devStart == std::string::npos)
                {
                    continue;
                }

                std::string devName = pcieDevicePath.substr(devStart + 1);
                if (devName.empty())
                {
                    continue;
                }
                pcieDeviceList.push_back(
                    {{"@odata.id",
                      "/redfish/v1/Systems/system/PCIeDevices/" + devName}});
            }
            asyncResp->res.jsonValue["PCIeDevices@odata.count"] =
                pcieDeviceList.size();
        };
    crow::connections::systemBus->async_method_call(
        std::move(getPCIeMapCallback), "xyz.openbmc_project.ObjectMapper",
        "/xyz/openbmc_project/object_mapper",
        "xyz.openbmc_project.ObjectMapper", "GetSubTreePaths",
        std::string(pciePath) + "/", 1, std::array<std::string, 0>());
}

class SystemPCIeDevice : public Node
{
  public:
    SystemPCIeDevice(CrowApp &app) :
        Node(app, "/redfish/v1/Systems/system/PCIeDevices/<str>/",
             std::string())
    {
        entityPrivileges = {
            {boost::beast::http::verb::get, {{"Login"}}},
            {boost::beast::http::verb::head, {{"Login"}}},
            {boost::beast::http::verb::patch, {{"ConfigureManager"}}},
            {boost::beast::http::verb::put, {{"ConfigureManager"}}},
            {boost::beast::http::verb::delete_, {{"ConfigureManager"}}},
            {boost::beast::http::verb::post, {{"ConfigureManager"}}}};
    }

  private:
    void doGet(crow::Response &res, const crow::Request &req,
               const std::vector<std::string> &params) override
    {
        std::shared_ptr<AsyncResp> asyncResp = std::make_shared<AsyncResp>(res);
        if (params.size() != 1)
        {
            messages::internalError(asyncResp->res);
            return;
        }
        const std::string &device = params[0];

        auto getPCIeDeviceCallback =
            [asyncResp,
             device](const boost::system::error_code ec,
                     boost::container::flat_map<
                         std::string, sdbusplus::message::variant<std::string>>
                         &pcieDevProperties) {
                if (ec)
                {
                    BMCWEB_LOG_DEBUG
                        << "failed to get PCIe Device properties ec: "
                        << ec.value() << ": " << ec.message();
                    if (ec.value() ==
                        boost::system::linux_error::bad_request_descriptor)
                    {
                        messages::resourceNotFound(asyncResp->res, "PCIeDevice",
                                                   device);
                    }
                    else
                    {
                        messages::internalError(asyncResp->res);
                    }
                    return;
                }

                asyncResp->res.jsonValue = {
                    {"@odata.type", "#PCIeDevice.v1_4_0.PCIeDevice"},
                    {"@odata.context",
                     "/redfish/v1/$metadata#PCIeDevice.v1_4_0.PCIeDevice"},
                    {"@odata.id",
                     "/redfish/v1/Systems/system/PCIeDevices/" + device},
                    {"Name", "PCIe Device"},
                    {"Id", device}};

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Manufacturer"]);
                    property)
                {
                    asyncResp->res.jsonValue["Manufacturer"] = *property;
                }

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["DeviceType"]);
                    property)
                {
                    asyncResp->res.jsonValue["DeviceType"] = *property;
                }

                asyncResp->res.jsonValue["PCIeFunctions"] = {
                    {"@odata.id", "/redfish/v1/Systems/system/PCIeDevices/" +
                                      device + "/PCIeFunctions"}};
            };
        std::string escapedPath = std::string(pciePath) + "/" + device;
        dbus::utility::escapePathForDbus(escapedPath);
        crow::connections::systemBus->async_method_call(
            std::move(getPCIeDeviceCallback), pcieService, escapedPath,
            "org.freedesktop.DBus.Properties", "GetAll", pcieDeviceInterface);
    }
};

class SystemPCIeFunctionCollection : public Node
{
  public:
    template <typename CrowApp>
    SystemPCIeFunctionCollection(CrowApp &app) :
        Node(app, "/redfish/v1/Systems/system/PCIeDevices/<str>/PCIeFunctions/",
             std::string())
    {
        entityPrivileges = {
            {boost::beast::http::verb::get, {{"Login"}}},
            {boost::beast::http::verb::head, {{"Login"}}},
            {boost::beast::http::verb::patch, {{"ConfigureManager"}}},
            {boost::beast::http::verb::put, {{"ConfigureManager"}}},
            {boost::beast::http::verb::delete_, {{"ConfigureManager"}}},
            {boost::beast::http::verb::post, {{"ConfigureManager"}}}};
    }

  private:
    /**
     * Functions triggers appropriate requests on DBus
     */
    void doGet(crow::Response &res, const crow::Request &req,
               const std::vector<std::string> &params) override
    {
        std::shared_ptr<AsyncResp> asyncResp = std::make_shared<AsyncResp>(res);
        if (params.size() != 1)
        {
            messages::internalError(asyncResp->res);
            return;
        }
        const std::string &device = params[0];
        asyncResp->res.jsonValue = {
            {"@odata.type", "#PCIeFunctionCollection.PCIeFunctionCollection"},
            {"@odata.context",
             "/redfish/v1/"
             "$metadata#PCIeFunctionCollection.PCIeFunctionCollection"},
            {"@odata.id", "/redfish/v1/Systems/system/PCIeDevices/" + device +
                              "/PCIeFunctions"},
            {"Name", "PCIe Function Collection"},
            {"Description",
             "Collection of PCIe Functions for PCIe Device " + device}};

        auto getPCIeDeviceCallback =
            [asyncResp,
             device](const boost::system::error_code ec,
                     boost::container::flat_map<
                         std::string, sdbusplus::message::variant<std::string>>
                         &pcieDevProperties) {
                if (ec)
                {
                    BMCWEB_LOG_DEBUG
                        << "failed to get PCIe Device properties ec: "
                        << ec.value() << ": " << ec.message();
                    if (ec.value() ==
                        boost::system::linux_error::bad_request_descriptor)
                    {
                        messages::resourceNotFound(asyncResp->res, "PCIeDevice",
                                                   device);
                    }
                    else
                    {
                        messages::internalError(asyncResp->res);
                    }
                    return;
                }

                nlohmann::json &pcieFunctionList =
                    asyncResp->res.jsonValue["Members"];
                pcieFunctionList = nlohmann::json::array();
                static constexpr const int maxPciFunctionNum = 8;
                for (int functionNum = 0; functionNum < maxPciFunctionNum;
                     functionNum++)
                {
                    // Check if this function exists by looking for a device ID
                    std::string devIDProperty =
                        "Function" + std::to_string(functionNum) + "DeviceId";
                    std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties[devIDProperty]);
                    if (property && !property->empty())
                    {
                        pcieFunctionList.push_back(
                            {{"@odata.id",
                              "/redfish/v1/Systems/system/PCIeDevices/" +
                                  device + "/PCIeFunctions/" +
                                  std::to_string(functionNum)}});
                    }
                }
                asyncResp->res.jsonValue["PCIeFunctions@odata.count"] =
                    pcieFunctionList.size();
            };
        std::string escapedPath = std::string(pciePath) + "/" + device;
        dbus::utility::escapePathForDbus(escapedPath);
        crow::connections::systemBus->async_method_call(
            std::move(getPCIeDeviceCallback), pcieService, escapedPath,
            "org.freedesktop.DBus.Properties", "GetAll", pcieDeviceInterface);
    }
};

class SystemPCIeFunction : public Node
{
  public:
    SystemPCIeFunction(CrowApp &app) :
        Node(
            app,
            "/redfish/v1/Systems/system/PCIeDevices/<str>/PCIeFunctions/<str>/",
            std::string(), std::string())
    {
        entityPrivileges = {
            {boost::beast::http::verb::get, {{"Login"}}},
            {boost::beast::http::verb::head, {{"Login"}}},
            {boost::beast::http::verb::patch, {{"ConfigureManager"}}},
            {boost::beast::http::verb::put, {{"ConfigureManager"}}},
            {boost::beast::http::verb::delete_, {{"ConfigureManager"}}},
            {boost::beast::http::verb::post, {{"ConfigureManager"}}}};
    }

  private:
    void doGet(crow::Response &res, const crow::Request &req,
               const std::vector<std::string> &params) override
    {
        std::shared_ptr<AsyncResp> asyncResp = std::make_shared<AsyncResp>(res);
        if (params.size() != 2)
        {
            messages::internalError(asyncResp->res);
            return;
        }
        const std::string &device = params[0];
        const std::string &function = params[1];

        auto getPCIeDeviceCallback =
            [asyncResp, device, function](
                const boost::system::error_code ec,
                boost::container::flat_map<
                    std::string, sdbusplus::message::variant<std::string>>
                    &pcieDevProperties) {
                if (ec)
                {
                    BMCWEB_LOG_DEBUG
                        << "failed to get PCIe Device properties ec: "
                        << ec.value() << ": " << ec.message();
                    if (ec.value() ==
                        boost::system::linux_error::bad_request_descriptor)
                    {
                        messages::resourceNotFound(asyncResp->res, "PCIeDevice",
                                                   device);
                    }
                    else
                    {
                        messages::internalError(asyncResp->res);
                    }
                    return;
                }

                // Check if this function exists by looking for a device ID
                std::string devIDProperty = "Function" + function + "DeviceId";
                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties[devIDProperty]);
                    property && property->empty())
                {
                    messages::resourceNotFound(asyncResp->res, "PCIeFunction",
                                               function);
                    return;
                }

                asyncResp->res.jsonValue = {
                    {"@odata.type", "#PCIeFunction.v1_2_0.PCIeFunction"},
                    {"@odata.context",
                     "/redfish/v1/$metadata#PCIeFunction.PCIeFunction"},
                    {"@odata.id", "/redfish/v1/Systems/system/PCIeDevices/" +
                                      device + "/PCIeFunctions/" + function},
                    {"Name", "PCIe Function"},
                    {"Id", function},
                    {"FunctionId", std::stoi(function)},
                    {"Links",
                     {{"PCIeDevice",
                       {{"@odata.id",
                         "/redfish/v1/Systems/system/PCIeDevices/" +
                             device}}}}}};

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Function" + function +
                                               "DeviceId"]);
                    property)
                {
                    asyncResp->res.jsonValue["DeviceId"] = *property;
                }

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Function" + function +
                                               "VendorId"]);
                    property)
                {
                    asyncResp->res.jsonValue["VendorId"] = *property;
                }

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Function" + function +
                                               "FunctionType"]);
                    property)
                {
                    asyncResp->res.jsonValue["FunctionType"] = *property;
                }

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Function" + function +
                                               "DeviceClass"]);
                    property)
                {
                    asyncResp->res.jsonValue["DeviceClass"] = *property;
                }

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Function" + function +
                                               "ClassCode"]);
                    property)
                {
                    asyncResp->res.jsonValue["ClassCode"] = *property;
                }

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Function" + function +
                                               "RevisionId"]);
                    property)
                {
                    asyncResp->res.jsonValue["RevisionId"] = *property;
                }

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Function" + function +
                                               "SubsystemId"]);
                    property)
                {
                    asyncResp->res.jsonValue["SubsystemId"] = *property;
                }

                if (std::string *property =
                        sdbusplus::message::variant_ns::get_if<std::string>(
                            &pcieDevProperties["Function" + function +
                                               "SubsystemVendorId"]);
                    property)
                {
                    asyncResp->res.jsonValue["SubsystemVendorId"] = *property;
                }
            };
        std::string escapedPath = std::string(pciePath) + "/" + device;
        dbus::utility::escapePathForDbus(escapedPath);
        crow::connections::systemBus->async_method_call(
            std::move(getPCIeDeviceCallback), pcieService, escapedPath,
            "org.freedesktop.DBus.Properties", "GetAll", pcieDeviceInterface);
    }
};

} // namespace redfish