blob: b985f5f49e3dc7b2c1d5d05f7efcf015b0815cb3 [file] [log] [blame]
#pragma once
#include "conf.hpp"
#include "controller.hpp"
#include "pidcontroller.hpp"
#include "sensors/manager.hpp"
#include "sensors/sensor.hpp"
#include "tuning.hpp"
#include "zone_interface.hpp"
#include <sdbusplus/bus.hpp>
#include <sdbusplus/server.hpp>
#include <xyz/openbmc_project/Control/Mode/server.hpp>
#include <fstream>
#include <iostream>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
template <typename... T>
using ServerObject = typename sdbusplus::server::object_t<T...>;
using ModeInterface = sdbusplus::xyz::openbmc_project::Control::server::Mode;
using ModeObject = ServerObject<ModeInterface>;
namespace pid_control
{
/*
* The DbusPidZone inherits from the Mode object so that it can listen for
* control mode changes. It primarily holds all PID loops and holds the sensor
* value cache that's used per iteration of the PID loops.
*/
class DbusPidZone : public ZoneInterface, public ModeObject
{
public:
DbusPidZone(int64_t zone, double minThermalOutput, double failSafePercent,
conf::CycleTime cycleTime, const SensorManager& mgr,
sdbusplus::bus_t& bus, const char* objPath, bool defer) :
ModeObject(bus, objPath,
defer ? ModeObject::action::defer_emit
: ModeObject::action::emit_object_added),
_zoneId(zone), _maximumSetPoint(),
_minThermalOutputSetPt(minThermalOutput),
_failSafePercent(failSafePercent), _cycleTime(cycleTime), _mgr(mgr)
{
if (loggingEnabled)
{
_log.open(loggingPath + "/zone_" + std::to_string(zone) + ".log");
}
}
bool getManualMode(void) const override;
/* Could put lock around this since it's accessed from two threads, but
* only one reader/one writer.
*/
bool getRedundantWrite(void) const override;
void setManualMode(bool mode);
bool getFailSafeMode(void) const override;
int64_t getZoneID(void) const override;
void addSetPoint(double setPoint, const std::string& name) override;
double getMaxSetPointRequest(void) const override;
void addRPMCeiling(double ceiling) override;
void clearSetPoints(void) override;
void clearRPMCeilings(void) override;
double getFailSafePercent(void) const override;
double getMinThermalSetPoint(void) const;
uint64_t getCycleIntervalTime(void) const override;
uint64_t getUpdateThermalsCycle(void) const override;
Sensor* getSensor(const std::string& name) override;
void determineMaxSetPointRequest(void) override;
void updateFanTelemetry(void) override;
void updateSensors(void) override;
void initializeCache(void) override;
void setOutputCache(std::string_view, const ValueCacheEntry&) override;
void dumpCache(void);
void processFans(void) override;
void processThermals(void) override;
void addFanPID(std::unique_ptr<Controller> pid);
void addThermalPID(std::unique_ptr<Controller> pid);
double getCachedValue(const std::string& name) override;
ValueCacheEntry getCachedValues(const std::string& name) override;
void addFanInput(const std::string& fan);
void addThermalInput(const std::string& therm);
void initializeLog(void) override;
void writeLog(const std::string& value) override;
/* Method for setting the manual mode over dbus */
bool manual(bool value) override;
/* Method for reading whether in fail-safe mode over dbus */
bool failSafe() const override;
private:
template <bool fanSensorLogging>
void processSensorInputs(const std::vector<std::string>& sensorInputs,
std::chrono::high_resolution_clock::time_point now)
{
for (const auto& sensorInput : sensorInputs)
{
auto sensor = _mgr.getSensor(sensorInput);
ReadReturn r = sensor->read();
_cachedValuesByName[sensorInput] = {r.value, r.unscaled};
int64_t timeout = sensor->getTimeout();
std::chrono::high_resolution_clock::time_point then = r.updated;
auto duration =
std::chrono::duration_cast<std::chrono::seconds>(now - then)
.count();
auto period = std::chrono::seconds(timeout).count();
/*
* TODO(venture): We should check when these were last read.
* However, these are the fans, so if I'm not getting updated values
* for them... what should I do?
*/
if constexpr (fanSensorLogging)
{
if (loggingEnabled)
{
const auto& v = _cachedValuesByName[sensorInput];
_log << "," << v.scaled << "," << v.unscaled;
const auto& p = _cachedFanOutputs[sensorInput];
_log << "," << p.scaled << "," << p.unscaled;
}
}
if (debugEnabled)
{
std::cerr << sensorInput << " sensor reading: " << r.value
<< "\n";
}
// check if fan fail.
if (sensor->getFailed())
{
_failSafeSensors.insert(sensorInput);
if (debugEnabled)
{
std::cerr << sensorInput << " sensor get failed\n";
}
}
else if (timeout != 0 && duration >= period)
{
_failSafeSensors.insert(sensorInput);
if (debugEnabled)
{
std::cerr << sensorInput << " sensor timeout\n";
}
}
else
{
// Check if it's in there: remove it.
auto kt = _failSafeSensors.find(sensorInput);
if (kt != _failSafeSensors.end())
{
if (debugEnabled)
{
std::cerr << sensorInput
<< " is erased from failsafe sensor set\n";
}
_failSafeSensors.erase(kt);
}
}
}
}
std::ofstream _log;
const int64_t _zoneId;
double _maximumSetPoint = 0;
std::string _maximumSetPointName;
std::string _maximumSetPointNamePrev;
bool _manualMode = false;
bool _redundantWrite = false;
const double _minThermalOutputSetPt;
const double _failSafePercent;
const conf::CycleTime _cycleTime;
std::set<std::string> _failSafeSensors;
std::vector<double> _SetPoints;
std::vector<double> _RPMCeilings;
std::vector<std::string> _fanInputs;
std::vector<std::string> _thermalInputs;
std::map<std::string, ValueCacheEntry> _cachedValuesByName;
std::map<std::string, ValueCacheEntry> _cachedFanOutputs;
const SensorManager& _mgr;
std::vector<std::unique_ptr<Controller>> _fans;
std::vector<std::unique_ptr<Controller>> _thermals;
};
} // namespace pid_control