diff options
Diffstat (limited to 'src/mem')
| -rw-r--r-- | src/mem/SConscript | 1 | ||||
| -rw-r--r-- | src/mem/dram_ctrl.cc | 37 | ||||
| -rw-r--r-- | src/mem/dram_ctrl.hh | 5 |
3 files changed, 34 insertions, 9 deletions
diff --git a/src/mem/SConscript b/src/mem/SConscript index ca1080162..50b00e8db 100644 --- a/src/mem/SConscript +++ b/src/mem/SConscript @@ -81,6 +81,7 @@ CompoundFlag('Bus', ['BaseBus', 'BusAddrRanges', 'CoherentBus', DebugFlag('Bridge') DebugFlag('CommMonitor') DebugFlag('DRAM') +DebugFlag('DRAMPower') DebugFlag('DRAMState') DebugFlag('LLSC') DebugFlag('MMU') diff --git a/src/mem/dram_ctrl.cc b/src/mem/dram_ctrl.cc index b4e1eac7b..2b053d78e 100644 --- a/src/mem/dram_ctrl.cc +++ b/src/mem/dram_ctrl.cc @@ -45,6 +45,7 @@ #include "base/bitfield.hh" #include "base/trace.hh" #include "debug/DRAM.hh" +#include "debug/DRAMPower.hh" #include "debug/DRAMState.hh" #include "debug/Drain.hh" #include "mem/dram_ctrl.hh" @@ -782,8 +783,11 @@ DRAMCtrl::activateBank(Bank& bank, Tick act_tick, uint32_t row) ++numBanksActive; assert(numBanksActive <= banksPerRank * ranksPerChannel); - DPRINTF(DRAM, "Activate bank at tick %lld, now got %d active\n", - act_tick, numBanksActive); + DPRINTF(DRAM, "Activate bank %d, rank %d at tick %lld, now got %d active\n", + bank.bank, bank.rank, act_tick, numBanksActive); + + DPRINTF(DRAMPower, "%llu,ACT,%d,%d\n", divCeil(act_tick, tCK), bank.bank, + bank.rank); // The next access has to respect tRAS for this bank bank.preAllowedAt = act_tick + tRAS; @@ -851,7 +855,7 @@ DRAMCtrl::processActivateEvent() } void -DRAMCtrl::prechargeBank(Bank& bank, Tick pre_at) +DRAMCtrl::prechargeBank(Bank& bank, Tick pre_at, bool trace) { // make sure the bank has an open row assert(bank.openRow != Bank::NO_ROW); @@ -872,8 +876,12 @@ DRAMCtrl::prechargeBank(Bank& bank, Tick pre_at) assert(numBanksActive != 0); --numBanksActive; - DPRINTF(DRAM, "Precharging bank at tick %lld, now got %d active\n", - pre_at, numBanksActive); + DPRINTF(DRAM, "Precharging bank %d, rank %d at tick %lld, now got " + "%d active\n", bank.bank, bank.rank, pre_at, numBanksActive); + + if (trace) + DPRINTF(DRAMPower, "%llu,PRE,%d,%d\n", divCeil(pre_at, tCK), + bank.bank, bank.rank); // if we look at the current number of active banks we might be // tempted to think the DRAM is now idle, however this can be @@ -1011,10 +1019,15 @@ DRAMCtrl::doDRAMAccess(DRAMPacket* dram_pkt) (got_bank_conflict || pageMgmt == Enums::close_adaptive); } + // DRAMPower trace command to be written + std::string mem_cmd = dram_pkt->isRead ? "RD" : "WR"; + // if this access should use auto-precharge, then we are // closing the row if (auto_precharge) { - prechargeBank(bank, std::max(curTick(), bank.preAllowedAt)); + prechargeBank(bank, std::max(curTick(), bank.preAllowedAt), false); + + mem_cmd.append("A"); DPRINTF(DRAM, "Auto-precharged bank: %d\n", dram_pkt->bankId); } @@ -1025,6 +1038,9 @@ DRAMCtrl::doDRAMAccess(DRAMPacket* dram_pkt) DPRINTF(DRAM, "Access to %lld, ready at %lld bus busy until %lld.\n", dram_pkt->addr, dram_pkt->readyTime, busBusyUntil); + DPRINTF(DRAMPower, "%llu,%s,%d,%d\n", divCeil(cmd_at, tCK), mem_cmd, + dram_pkt->bank, dram_pkt->rank); + // Update the minimum timing between the requests, this is a // conservative estimate of when we have to schedule the next // request to not introduce any unecessary bubbles. In most cases @@ -1315,7 +1331,7 @@ DRAMCtrl::processRefreshEvent() for (int i = 0; i < ranksPerChannel; i++) { for (int j = 0; j < banksPerRank; j++) { if (banks[i][j].openRow != Bank::NO_ROW) { - prechargeBank(banks[i][j], pre_at); + prechargeBank(banks[i][j], pre_at, false); } else { banks[i][j].actAllowedAt = std::max(banks[i][j].actAllowedAt, act_allowed_at); @@ -1323,6 +1339,10 @@ DRAMCtrl::processRefreshEvent() std::max(banks[i][j].preAllowedAt, pre_at); } } + + // at the moment this affects all ranks + DPRINTF(DRAMPower, "%llu,PREA,0,%d\n", divCeil(pre_at, tCK), + i); } } else { DPRINTF(DRAM, "All banks already precharged, starting refresh\n"); @@ -1354,6 +1374,9 @@ DRAMCtrl::processRefreshEvent() for (int j = 0; j < banksPerRank; j++) { banks[i][j].actAllowedAt = ref_done_at; } + + // at the moment this affects all ranks + DPRINTF(DRAMPower, "%llu,REF,0,%d\n", divCeil(curTick(), tCK), i); } // make sure we did not wait so long that we cannot make up diff --git a/src/mem/dram_ctrl.hh b/src/mem/dram_ctrl.hh index aee2635b4..720383542 100644 --- a/src/mem/dram_ctrl.hh +++ b/src/mem/dram_ctrl.hh @@ -401,10 +401,11 @@ class DRAMCtrl : public AbstractMemory * done. This will also deal with any stats related to the * accesses to the open page. * - * @param bank The bank to precharge + * @param bank_ref The bank to precharge * @param pre_at Time when the precharge takes place + * @param trace Is this an auto precharge then do not add to trace */ - void prechargeBank(Bank& bank, Tick pre_at); + void prechargeBank(Bank& bank_ref, Tick pre_at, bool trace = true); /** * Used for debugging to observe the contents of the queues. |