Add feature Cold Redundancy
Add an Intel specific feature PSU Cold Redundancy. This is the first patch
which will get PSU information and PSU Event from D-Bus interfaces.
Cold Redundancy design document is in
https://gerrit.openbmc-project.xyz/c/openbmc/docs/+/27637
Signed-off-by: Cheng C Yang <cheng.c.yang@linux.intel.com>
Change-Id: Ic039118e4cebc8b0ff6ba80493180a1d8af0096b
diff --git a/cold-redundancy/cold_redundancy.hpp b/cold-redundancy/cold_redundancy.hpp
new file mode 100644
index 0000000..cfceff2
--- /dev/null
+++ b/cold-redundancy/cold_redundancy.hpp
@@ -0,0 +1,138 @@
+/*
+// Copyright (c) 2019 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.
+*/
+
+#include <sdbusplus/asio/object_server.hpp>
+#include <util.hpp>
+
+/**
+ * @class ColdRedundancy
+ *
+ */
+class ColdRedundancy
+{
+ public:
+ /**
+ * Constructor
+ *
+ * @param[in] io - boost asio context
+ * @param[in] objectServer - D-Bus object
+ * @param[in] dbusConnection - D-Bus connection
+ */
+ ColdRedundancy(
+ boost::asio::io_service& io,
+ sdbusplus::asio::object_server& objectServer,
+ std::shared_ptr<sdbusplus::asio::connection>& dbusConnection);
+
+ /**
+ * Checking PSU information, adding matches, starting rotation
+ * and creating PSU objects
+ *
+ * @param[in] dbusConnection - D-Bus connection
+ */
+ void
+ createPSU(std::shared_ptr<sdbusplus::asio::connection>& dbusConnection);
+
+ private:
+ /**
+ * @brief Indicates the count of PSUs
+ *
+ * @details Indicates how many PSUs are there on the system.
+ */
+ uint8_t numberOfPSU = 0;
+
+ /**
+ * @brief Indicates the delay timer
+ *
+ * @details Each time this daemon start, need a delay to avoid
+ * different PSUs calling createPSU function for
+ * several times at same time
+ */
+ boost::asio::steady_timer filterTimer;
+
+ /**
+ * @brief Indicates the dbus connction
+ */
+ std::shared_ptr<sdbusplus::asio::connection>& systemBus;
+
+ /**
+ * @brief Indicates the D-Bus matches
+ *
+ * @details This matches contain all matches in this daemon such
+ * as PSU event match, PSU information match. The target
+ * D-Bus properties change will trigger callback function
+ * by these matches
+ */
+ std::vector<std::unique_ptr<sdbusplus::bus::match::match>> matches;
+};
+
+/**
+ * @class PowerSupply
+ * Represents a power supply device.
+ */
+class PowerSupply
+{
+ public:
+ /**
+ * Constructor
+ *
+ * @param[in] name - the device name
+ * @param[in] bus - smbus number
+ * @param[in] address - device address on smbus
+ * @param[in] order - ranking order of redundancy
+ * @param[in] dbusConnection - D-Bus connection
+ */
+ PowerSupply(
+ std::string& name, uint8_t bus, uint8_t address, uint8_t order,
+ const std::shared_ptr<sdbusplus::asio::connection>& dbusConnection);
+ ~PowerSupply() = default;
+
+ /**
+ * @brief Indicates the name of the device
+ *
+ * @details The PSU name such as PSU1
+ */
+ std::string name;
+
+ /**
+ * @brief Indicates the smbus number
+ *
+ * @details The smbus number on the system
+ */
+ uint8_t bus;
+
+ /**
+ * @brief Indicates the smbus address of the device
+ *
+ * @details The 7-bit smbus address of the PSU on smbus
+ */
+ uint8_t address;
+
+ /**
+ * @brief Indicates the ranking order
+ *
+ * @details The order indicates the sequence entering standby mode.
+ * the PSU with lower order will enter standby mode first.
+ */
+ uint8_t order = 0;
+
+ /**
+ * @brief Indicates the status of the PSU
+ *
+ * @details If the PSU has no any problem, the status of it will be
+ * normal otherwise acLost.
+ */
+ CR::PSUState state = CR::PSUState::normal;
+};