gem5  v22.1.0.0
energy_ctrl.hh
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37 
53 #ifndef __DEV_ARM_ENERGY_CTRL_HH__
54 #define __DEV_ARM_ENERGY_CTRL_HH__
55 
56 #include "dev/io_device.hh"
57 #include "params/EnergyCtrl.hh"
58 
59 namespace gem5
60 {
61 
62 class DVFSHandler;
63 
64 class EnergyCtrl : public BasicPioDevice
65 {
66  public:
104  {
117  };
118 
119  typedef EnergyCtrlParams Params;
120  EnergyCtrl(const Params &p);
121 
127  Tick read(PacketPtr pkt) override;
133  Tick write(PacketPtr pkt) override;
134 
135  void serialize(CheckpointOut &cp) const override;
136  void unserialize(CheckpointIn &cp) override;
137 
138  void startup() override;
139  void init() override;
140 
141  private:
143 
148  uint32_t domainID;
149 
155 
165  uint32_t perfLevelAck;
166 
167  uint32_t perfLevelToRead;
168 
169  static uint32_t ticksTokHz(Tick period) {
170  return (uint32_t)(sim_clock::as_int::ms / period);
171  }
172 
173  static uint32_t toMicroVolt(double voltage) {
174  return (uint32_t)(voltage * 1000000);
175  }
176 
181  void updatePLAck() {
182  perfLevelAck = 1;
183  }
184 
186 };
187 
188 } // namespace gem5
189 
190 #endif //__DEV_ARM_ENERGY_CTRL_HH__
double voltage() const
DVFS Handler class, maintains a list of all the domains it can handle.
Definition: dvfs_handler.hh:75
static uint32_t toMicroVolt(double voltage)
Definition: energy_ctrl.hh:173
void unserialize(CheckpointIn &cp) override
Unserialize an object.
Definition: energy_ctrl.cc:233
static uint32_t ticksTokHz(Tick period)
Definition: energy_ctrl.hh:169
Tick read(PacketPtr pkt) override
Read command sent to the device.
Definition: energy_ctrl.cc:65
void startup() override
startup() is the final initialization call before simulation.
Definition: energy_ctrl.cc:249
DVFSHandler * dvfsHandler
Definition: energy_ctrl.hh:142
EventFunctionWrapper updateAckEvent
Definition: energy_ctrl.hh:185
EnergyCtrl(const Params &p)
Definition: energy_ctrl.cc:51
void init() override
init() is called after all C++ SimObjects have been created and all ports are connected.
Definition: energy_ctrl.cc:257
EnergyCtrlParams Params
Definition: energy_ctrl.hh:119
Tick write(PacketPtr pkt) override
Write command sent to the device.
Definition: energy_ctrl.cc:151
void updatePLAck()
Update the acknowledgment that is read back by the software to confirm newly requested performance le...
Definition: energy_ctrl.hh:181
void serialize(CheckpointOut &cp) const override
Serialize an object.
Definition: energy_ctrl.cc:221
uint32_t perfLevelAck
Acknowledgment (PERF_LEVEL_ACK) RO register, software polls this register to read back the status of ...
Definition: energy_ctrl.hh:165
uint32_t perfLevelToRead
Definition: energy_ctrl.hh:167
uint32_t domainIDIndexToRead
Index for getting the domain ID from the domain ID list available with the DVFS handler.
Definition: energy_ctrl.hh:154
uint32_t domainID
Cluster ID (DOMAIN_ID) R/W register, programmed to ID of the domain for which the set/get performance...
Definition: energy_ctrl.hh:148
A Packet is used to encapsulate a transfer between two objects in the memory system (e....
Definition: packet.hh:294
Bitfield< 54 > p
Definition: pagetable.hh:70
Tick ms
millisecond
Definition: core.cc:69
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
std::ostream CheckpointOut
Definition: serialize.hh:66
uint64_t Tick
Tick count type.
Definition: types.hh:58

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