xref: /openbmc/phosphor-pid-control/pid/zone.hpp (revision e39bbe9f)
1 #pragma once
2 
3 #include "conf.hpp"
4 #include "controller.hpp"
5 #include "pidcontroller.hpp"
6 #include "sensors/manager.hpp"
7 #include "sensors/sensor.hpp"
8 #include "tuning.hpp"
9 #include "zone_interface.hpp"
10 
11 #include <sdbusplus/bus.hpp>
12 #include <sdbusplus/server.hpp>
13 #include <xyz/openbmc_project/Control/Mode/server.hpp>
14 
15 #include <fstream>
16 #include <map>
17 #include <memory>
18 #include <set>
19 #include <string>
20 #include <vector>
21 
22 template <typename... T>
23 using ServerObject = typename sdbusplus::server::object::object<T...>;
24 using ModeInterface = sdbusplus::xyz::openbmc_project::Control::server::Mode;
25 using ModeObject = ServerObject<ModeInterface>;
26 
27 namespace pid_control
28 {
29 
30 /*
31  * The DbusPidZone inherits from the Mode object so that it can listen for
32  * control mode changes.  It primarily holds all PID loops and holds the sensor
33  * value cache that's used per iteration of the PID loops.
34  */
35 class DbusPidZone : public ZoneInterface, public ModeObject
36 {
37   public:
38     DbusPidZone(int64_t zone, double minThermalOutput, double failSafePercent,
39                 const SensorManager& mgr, sdbusplus::bus::bus& bus,
40                 const char* objPath, bool defer) :
41         ModeObject(bus, objPath, defer),
42         _zoneId(zone), _maximumSetPoint(),
43         _minThermalOutputSetPt(minThermalOutput),
44         _failSafePercent(failSafePercent), _mgr(mgr)
45     {
46         if (loggingEnabled)
47         {
48             _log.open(loggingPath + "/zone_" + std::to_string(zone) + ".log");
49         }
50     }
51 
52     bool getManualMode(void) const override;
53     /* Could put lock around this since it's accessed from two threads, but
54      * only one reader/one writer.
55      */
56     void setManualMode(bool mode);
57     bool getFailSafeMode(void) const override;
58 
59     int64_t getZoneID(void) const;
60     void addSetPoint(double setpoint) override;
61     double getMaxSetPointRequest(void) const override;
62     void addRPMCeiling(double ceiling) override;
63     void clearSetPoints(void) override;
64     void clearRPMCeilings(void) override;
65     double getFailSafePercent(void) const override;
66     double getMinThermalSetpoint(void) const;
67 
68     Sensor* getSensor(const std::string& name) override;
69     void determineMaxSetPointRequest(void) override;
70     void updateFanTelemetry(void) override;
71     void updateSensors(void) override;
72     void initializeCache(void) override;
73     void dumpCache(void);
74     void processFans(void) override;
75     void processThermals(void) override;
76 
77     void addFanPID(std::unique_ptr<Controller> pid);
78     void addThermalPID(std::unique_ptr<Controller> pid);
79     double getCachedValue(const std::string& name) override;
80     void addFanInput(const std::string& fan);
81     void addThermalInput(const std::string& therm);
82 
83     void initializeLog(void) override;
84     void writeLog(const std::string& value) override;
85 
86     /* Method for setting the manual mode over dbus */
87     bool manual(bool value) override;
88     /* Method for reading whether in fail-safe mode over dbus */
89     bool failSafe() const override;
90 
91   private:
92     std::ofstream _log;
93 
94     const int64_t _zoneId;
95     double _maximumSetPoint = 0;
96     bool _manualMode = false;
97     const double _minThermalOutputSetPt;
98     const double _failSafePercent;
99 
100     std::set<std::string> _failSafeSensors;
101 
102     std::vector<double> _SetPoints;
103     std::vector<double> _RPMCeilings;
104     std::vector<std::string> _fanInputs;
105     std::vector<std::string> _thermalInputs;
106     std::map<std::string, double> _cachedValuesByName;
107     const SensorManager& _mgr;
108 
109     std::vector<std::unique_ptr<Controller>> _fans;
110     std::vector<std::unique_ptr<Controller>> _thermals;
111 };
112 
113 } // namespace pid_control
114