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Moved buffer mechanism to scheduler.

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This commit is contained in:
Lukas Steiner (2)
2020-02-13 16:47:51 +01:00
parent 7611163bc3
commit fbc0a3d7e6
5 changed files with 38 additions and 17 deletions
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12
DRAMSys/library/src/controller/scheduler/SchedulerFifo.cpp
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@@ -38,12 +38,20 @@ SchedulerFifo::SchedulerFifo()
{
buffer = std::vector<std::queue<tlm_generic_payload *>>
(Configuration::getInstance().memSpec->NumberOfBanks);
maxNumberOfRequests = Configuration::getInstance().MaxNrOfTransactions;
}
bool SchedulerFifo::hasBufferSpace(tlm_generic_payload *payload)
{
if (buffer[DramExtension::getBank(payload).ID()].size() < maxNumberOfRequests)
return true;
else
return false;
}
void SchedulerFifo::storeRequest(tlm_generic_payload *payload)
{
unsigned bankID = DramExtension::getBank(payload).ID();
buffer[bankID].push(payload);
buffer[DramExtension::getBank(payload).ID()].push(payload);
}
tlm_generic_payload *SchedulerFifo::getNextRequest(BankMachine *bankMachine)

10
DRAMSys/library/src/controller/scheduler/SchedulerFifo.h
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@@ -48,12 +48,14 @@ class SchedulerFifo : public SchedulerIF
{
public:
SchedulerFifo();
void storeRequest(tlm_generic_payload *);
tlm_generic_payload *getNextRequest(BankMachine *);
bool hasRowHit(Bank, Row);
bool hasRequest(Bank);
virtual bool hasBufferSpace(tlm_generic_payload *) override;
virtual void storeRequest(tlm_generic_payload *) override;
virtual tlm_generic_payload *getNextRequest(BankMachine *) override;
virtual bool hasRowHit(Bank, Row) override;
virtual bool hasRequest(Bank) override;
private:
std::vector<std::queue<tlm_generic_payload *>> buffer;
unsigned maxNumberOfRequests;
};
#endif // SCHEDULERFIFO_H

18
DRAMSys/library/src/controller/scheduler/SchedulerFrFcfs.cpp
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@@ -38,14 +38,22 @@
SchedulerFrFcfs::SchedulerFrFcfs()
{
buffer = std::vector<std::vector<tlm_generic_payload *>>
buffer = std::vector<std::list<tlm_generic_payload *>>
(Configuration::getInstance().memSpec->NumberOfBanks);
maxNumberOfRequests = Configuration::getInstance().MaxNrOfTransactions;
}
bool SchedulerFrFcfs::hasBufferSpace(tlm_generic_payload *payload)
{
if (buffer[DramExtension::getBank(payload).ID()].size() < maxNumberOfRequests)
return true;
else
return false;
}
void SchedulerFrFcfs::storeRequest(tlm_generic_payload *payload)
{
unsigned bankID = DramExtension::getBank(payload).ID();
buffer[bankID].push_back(payload);
buffer[DramExtension::getBank(payload).ID()].push_back(payload);
}
tlm_generic_payload *SchedulerFrFcfs::getNextRequest(BankMachine *bankMachine)
@@ -57,7 +65,7 @@ tlm_generic_payload *SchedulerFrFcfs::getNextRequest(BankMachine *bankMachine)
if (currentState == BmState::Precharged)
{
tlm_generic_payload *result = buffer[bankID].front();
buffer[bankID].erase(buffer[bankID].begin());
buffer[bankID].pop_front();
return result;
}
else if (currentState == BmState::Activated)
@@ -75,7 +83,7 @@ tlm_generic_payload *SchedulerFrFcfs::getNextRequest(BankMachine *bankMachine)
}
// No row hit found
tlm_generic_payload *result = buffer[bankID].front();
buffer[bankID].erase(buffer[bankID].begin());
buffer[bankID].pop_front();
return result;
}
else

14
DRAMSys/library/src/controller/scheduler/SchedulerFrFcfs.h
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@@ -37,7 +37,7 @@
#include <tlm.h>
#include <vector>
#include <vector>
#include <list>
#include "SchedulerIF.h"
#include "../../common/dramExtensions.h"
#include "../BankMachine.h"
@@ -48,12 +48,14 @@ class SchedulerFrFcfs : public SchedulerIF
{
public:
SchedulerFrFcfs();
void storeRequest(tlm_generic_payload *);
tlm_generic_payload *getNextRequest(BankMachine *);
bool hasRowHit(Bank, Row);
bool hasRequest(Bank);
virtual bool hasBufferSpace(tlm_generic_payload *) override;
virtual void storeRequest(tlm_generic_payload *) override;
virtual tlm_generic_payload *getNextRequest(BankMachine *) override;
virtual bool hasRowHit(Bank, Row) override;
virtual bool hasRequest(Bank) override;
private:
std::vector<std::vector<tlm_generic_payload *>> buffer;
std::vector<std::list<tlm_generic_payload *>> buffer;
unsigned maxNumberOfRequests;
};
#endif // SCHEDULERFRFCFS_H

1
DRAMSys/library/src/controller/scheduler/SchedulerIF.h
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@@ -49,6 +49,7 @@ class SchedulerIF
{
public:
virtual ~SchedulerIF() {}
virtual bool hasBufferSpace(tlm_generic_payload *) = 0;
virtual void storeRequest(tlm_generic_payload *) = 0;
virtual tlm_generic_payload *getNextRequest(BankMachine *) = 0;
virtual bool hasRowHit(Bank, Row) = 0;