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#pragma once
#include "pid/ec/pid.hpp"
#include <limits>
#include <phosphor-logging/log.hpp>
#include <sdbusplus/bus.hpp>
#include <string>
/* This program assumes sensors use the Sensor.Value interface
* and for sensor->write() I only implemented sysfs as a type,
* but -- how would it know whether to use Control.FanSpeed or Control.FanPwm?
*
* One could get the interface list for the object and search for Control.*
* but, it needs to know the maximum, minimum. The only sensors it wants to
* write in this code base are Fans...
*/
enum class IOInterfaceType
{
NONE, // There is no interface.
EXTERNAL,
DBUSPASSIVE,
DBUSACTIVE, // This means for write that it needs to look up the interface.
SYSFS,
UNKNOWN
};
/* WriteInterfaceType is different because Dbusactive/passive. how to know... */
IOInterfaceType getWriteInterfaceType(const std::string& path);
IOInterfaceType getReadInterfaceType(const std::string& path);
void restartControlLoops(void);
/*
* Given a configuration structure, fill out the information we use within the
* PID loop.
*/
void initializePIDStruct(ec::pid_info_t* info, const ec::pidinfo& initial);
void dumpPIDStruct(ec::pid_info_t* info);
struct SensorProperties
{
int64_t scale;
double value;
double min;
double max;
std::string unit;
};
struct SensorThresholds
{
double lowerThreshold = std::numeric_limits<double>::quiet_NaN();
double upperThreshold = std::numeric_limits<double>::quiet_NaN();
};
const std::string sensorintf = "xyz.openbmc_project.Sensor.Value";
const std::string criticalThreshInf =
"xyz.openbmc_project.Sensor.Threshold.Critical";
const std::string propertiesintf = "org.freedesktop.DBus.Properties";
class DbusHelperInterface
{
public:
virtual ~DbusHelperInterface() = default;
/** @brief Get the service providing the interface for the path.
*
* @warning Throws exception on dbus failure.
*/
virtual std::string getService(sdbusplus::bus::bus& bus,
const std::string& intf,
const std::string& path) = 0;
/** @brief Get all Sensor.Value properties for a service and path.
*
* @param[in] bus - A bus to use for the call.
* @param[in] service - The service providing the interface.
* @param[in] path - The dbus path.
* @param[out] prop - A pointer to a properties struct to fill out.
*
* @warning Throws exception on dbus failure.
*/
virtual void getProperties(sdbusplus::bus::bus& bus,
const std::string& service,
const std::string& path,
struct SensorProperties* prop) = 0;
/** @brief Get Critical Threshold current assert status
*
* @param[in] bus - A bus to use for the call.
* @param[in] service - The service providing the interface.
* @param[in] path - The dbus path.
*/
virtual bool thresholdsAsserted(sdbusplus::bus::bus& bus,
const std::string& service,
const std::string& path) = 0;
};
class DbusHelper : public DbusHelperInterface
{
public:
DbusHelper() = default;
~DbusHelper() = default;
DbusHelper(const DbusHelper&) = default;
DbusHelper& operator=(const DbusHelper&) = default;
DbusHelper(DbusHelper&&) = default;
DbusHelper& operator=(DbusHelper&&) = default;
std::string getService(sdbusplus::bus::bus& bus, const std::string& intf,
const std::string& path) override;
void getProperties(sdbusplus::bus::bus& bus, const std::string& service,
const std::string& path,
struct SensorProperties* prop) override;
bool thresholdsAsserted(sdbusplus::bus::bus& bus,
const std::string& service,
const std::string& path) override;
template <typename T>
void getProperty(sdbusplus::bus::bus& bus, const std::string& service,
const std::string& path, const std::string& interface,
const std::string& propertyName, T& prop)
{
namespace log = phosphor::logging;
auto msg = bus.new_method_call(service.c_str(), path.c_str(),
propertiesintf.c_str(), "Get");
msg.append(interface, propertyName);
std::variant<T> result;
try
{
auto valueResponseMsg = bus.call(msg);
valueResponseMsg.read(result);
}
catch (const sdbusplus::exception::SdBusError& ex)
{
log::log<log::level::ERR>("Get Property Failed",
log::entry("WHAT=%s", ex.what()));
throw;
}
prop = std::get<T>(result);
}
};
std::string getSensorPath(const std::string& type, const std::string& id);
std::string getMatch(const std::string& type, const std::string& id);
void scaleSensorReading(const double min, const double max, double& value);
bool validType(const std::string& type);
struct VariantToDoubleVisitor
{
template <typename T>
std::enable_if_t<std::is_arithmetic<T>::value, double>
operator()(const T& t) const
{
return static_cast<double>(t);
}
template <typename T>
std::enable_if_t<!std::is_arithmetic<T>::value, double>
operator()(const T& t) const
{
throw std::invalid_argument("Cannot translate type to double");
}
};
/*
* Given a path that optionally has a glob portion, fill it out.
*/
std::string FixupPath(std::string original);
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