Fix issuance of commands in half-cylces in HBM3

DRAMSys/library/src/controller/checker/CheckerHBM3.cpp

@@ -760,6 +760,10 @@ sc_time CheckerHBM3::timeToSatisfyConstraints(Command command, const tlm_generic
         SC_REPORT_FATAL("CheckerHBM3", "Unknown command!");
     }
 
+    // Don't issue commands at half cycles.
+    if (command != Command::PREAB && command != Command::PREPB && !isFullCycle(earliestTimeToStart))
+        earliestTimeToStart += memSpec->tCK / 2;
+
     return earliestTimeToStart;
 }
 
@@ -794,3 +798,9 @@ void CheckerHBM3::insert(Command command, const tlm_generic_payload &payload)
     if (command == Command::REFPB)
         bankwiseRefreshCounter[rank.ID()] = (bankwiseRefreshCounter[rank.ID()] + 1) % memSpec->banksPerRank;
 }
+
+bool CheckerHBM3::isFullCycle(const sc_core::sc_time& time) const
+{
+    sc_time aligedAtHalfCycle = std::floor((time * 2 / memSpec->tCK + 0.5)) / 2 * memSpec->tCK;
+    return aligedAtHalfCycle % memSpec->tCK == SC_ZERO_TIME;
+}

DRAMSys/library/src/controller/checker/CheckerHBM3.h

@@ -50,6 +50,8 @@ public:
     void insert(Command command, const tlm::tlm_generic_payload& payload) override;
 
 private:
+    bool isFullCycle(const sc_core::sc_time& time) const;
+
     const MemSpecHBM3 *memSpec;
 
     std::vector<std::vector<sc_core::sc_time>> lastScheduledByCommandAndBank;