| /* |
| // Copyright (c) 2021 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 <systemd/sd-journal.h> |
| |
| #include <error_monitors/base_monitor.hpp> |
| #include <gpiod.hpp> |
| #include <host_error_monitor.hpp> |
| #include <sdbusplus/asio/object_server.hpp> |
| |
| #include <iostream> |
| |
| namespace host_error_monitor::cpu_mismatch_monitor |
| { |
| static constexpr bool debug = false; |
| |
| class CPUMismatchMonitor : public host_error_monitor::base_monitor::BaseMonitor |
| { |
| size_t cpuNum; |
| gpiod::line cpuMismatchLine; |
| |
| void cpuMismatchLog() |
| { |
| sd_journal_send("MESSAGE=HostError: CPU %d mismatch", cpuNum, |
| "PRIORITY=%i", LOG_ERR, "REDFISH_MESSAGE_ID=%s", |
| "OpenBMC.0.1.CPUMismatch", "REDFISH_MESSAGE_ARGS=%d", |
| cpuNum, NULL); |
| } |
| |
| bool requestCPUMismatchInput() |
| { |
| // Find the GPIO line |
| cpuMismatchLine = gpiod::find_line(signalName); |
| if (!cpuMismatchLine) |
| { |
| std::cerr << "Failed to find the " << signalName << " line.\n"; |
| return false; |
| } |
| |
| // Request GPIO input |
| try |
| { |
| cpuMismatchLine.request( |
| {"host-error-monitor", gpiod::line_request::DIRECTION_INPUT}); |
| } |
| catch (std::exception&) |
| { |
| std::cerr << "Failed to request " << signalName << " input\n"; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool cpuMismatchAsserted() |
| { |
| if constexpr (debug) |
| { |
| std::cerr << "Checking " << signalName << " state\n"; |
| } |
| |
| return (cpuMismatchLine.get_value() == 1); |
| } |
| |
| void cpuMismatchAssertHandler() |
| { |
| std::cerr << signalName << " asserted\n"; |
| cpuMismatchLog(); |
| } |
| |
| void checkCPUMismatch() |
| { |
| if (cpuMismatchAsserted()) |
| { |
| cpuMismatchAssertHandler(); |
| } |
| } |
| |
| public: |
| CPUMismatchMonitor(boost::asio::io_service& io, |
| std::shared_ptr<sdbusplus::asio::connection> conn, |
| const std::string& signalName, const size_t cpuNum) : |
| BaseMonitor(io, conn, signalName), |
| cpuNum(cpuNum) |
| { |
| // Request GPIO input |
| if (!requestCPUMismatchInput()) |
| { |
| return; |
| } |
| checkCPUMismatch(); |
| valid = true; |
| } |
| |
| void hostOn() override |
| { |
| checkCPUMismatch(); |
| } |
| }; |
| } // namespace host_error_monitor::cpu_mismatch_monitor |