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/*
// 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 "utils.hpp"
#include <boost/algorithm/string/replace.hpp>
#include <boost/asio/steady_timer.hpp>
#include <iostream>
#include <sdbusplus/asio/connection.hpp>
#include <sdbusplus/asio/object_server.hpp>
#include <sdbusplus/bus/match.hpp>
#include <string>
extern "C" {
#include <i2c/smbus.h>
#include <linux/i2c-dev.h>
}
constexpr const char* configType =
"xyz.openbmc_project.Configuration.Intel_HSBP_CPLD";
boost::asio::io_context io;
auto conn = std::make_shared<sdbusplus::asio::connection>(io);
sdbusplus::asio::object_server objServer(conn);
struct Backplane
{
Backplane(size_t busIn, size_t addressIn, const std::string& nameIn) :
bus(busIn), address(addressIn), name(nameIn)
{
}
void run()
{
file = open(("/dev/i2c-" + std::to_string(bus)).c_str(), O_RDWR);
if (file < 0)
{
std::cerr << "unable to open bus " << bus << "\n";
return;
}
if (ioctl(file, I2C_SLAVE_FORCE, address) < 0)
{
std::cerr << "unable to set address to " << address << "\n";
return;
}
hsbpItemIface = objServer.add_interface(
"/xyz/openbmc_project/inventory/item/hsbp/" +
boost::replace_all_copy(name, " ", "_"),
inventory::interface);
hsbpItemIface->register_property("Present", present(true));
hsbpItemIface->register_property("PrettyName", name);
hsbpItemIface->initialize();
if (!present())
{
// backplane isn't there
return;
}
}
bool present(bool update = false)
{
static bool present = false;
if (update)
{
present = i2c_smbus_read_byte(file) >= 0;
}
return present;
}
~Backplane()
{
objServer.remove_interface(hsbpItemIface);
if (file >= 0)
{
close(file);
}
}
size_t bus;
size_t address;
int file = -1;
std::string name;
std::string type;
std::shared_ptr<sdbusplus::asio::dbus_interface> hsbpItemIface;
std::vector<std::shared_ptr<sdbusplus::asio::dbus_interface>>
driveItemIfaces;
};
std::unordered_map<std::string, Backplane> backplanes;
void populate()
{
conn->async_method_call(
[](const boost::system::error_code ec, const GetSubTreeType& subtree) {
if (ec)
{
std::cerr << "Error contacting mapper " << ec.message() << "\n";
return;
}
for (const auto& [path, objDict] : subtree)
{
if (objDict.empty())
{
continue;
}
const std::string& owner = objDict.begin()->first;
conn->async_method_call(
[path](const boost::system::error_code ec2,
const boost::container::flat_map<
std::string, BasicVariantType>& resp) {
if (ec2)
{
std::cerr << "Error Getting Config "
<< ec2.message() << "\n";
return;
}
backplanes.clear();
std::optional<size_t> bus;
std::optional<size_t> address;
std::optional<std::string> name;
for (const auto& [key, value] : resp)
{
if (key == "Bus")
{
bus = std::get<uint64_t>(value);
}
else if (key == "Address")
{
address = std::get<uint64_t>(value);
}
else if (key == "Name")
{
name = std::get<std::string>(value);
}
}
if (!bus || !address || !name)
{
std::cerr << "Illegal configuration at " << path
<< "\n";
return;
}
const auto& [backplane, status] = backplanes.emplace(
*name, Backplane(*bus, *address, *name));
backplane->second.run();
},
owner, path, "org.freedesktop.DBus.Properties", "GetAll",
configType);
}
},
mapper::busName, mapper::path, mapper::interface, mapper::subtree, "/",
0, std::array<const char*, 1>{configType});
}
int main()
{
boost::asio::steady_timer callbackTimer(io);
conn->request_name("xyz.openbmc_project.HsbpManager");
sdbusplus::bus::match::match match(
*conn,
"type='signal',member='PropertiesChanged',arg0='" +
std::string(configType) + "'",
[&callbackTimer](sdbusplus::message::message&) {
callbackTimer.expires_after(std::chrono::seconds(2));
callbackTimer.async_wait([](const boost::system::error_code ec) {
if (ec == boost::asio::error::operation_aborted)
{
// timer was restarted
return;
}
else if (ec)
{
std::cerr << "Timer error" << ec.message() << "\n";
return;
}
populate();
});
});
io.post([]() { populate(); });
io.run();
}
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