diff options
Diffstat (limited to 'src/mem')
| -rw-r--r-- | src/mem/dram_ctrl.cc | 55 | ||||
| -rw-r--r-- | src/mem/dram_ctrl.hh | 2 |
2 files changed, 27 insertions, 30 deletions
diff --git a/src/mem/dram_ctrl.cc b/src/mem/dram_ctrl.cc index 4398611e5..9e5c00b0e 100644 --- a/src/mem/dram_ctrl.cc +++ b/src/mem/dram_ctrl.cc @@ -104,32 +104,8 @@ DRAMCtrl::DRAMCtrl(const DRAMCtrlParams* p) : "must be a power of two\n", burstSize); for (int i = 0; i < ranksPerChannel; i++) { - Rank* rank = new Rank(*this, p); + Rank* rank = new Rank(*this, p, i); ranks.push_back(rank); - - rank->actTicks.resize(activationLimit, 0); - rank->banks.resize(banksPerRank); - rank->rank = i; - - for (int b = 0; b < banksPerRank; b++) { - rank->banks[b].bank = b; - // GDDR addressing of banks to BG is linear. - // Here we assume that all DRAM generations address bank groups as - // follows: - if (bankGroupArch) { - // Simply assign lower bits to bank group in order to - // rotate across bank groups as banks are incremented - // e.g. with 4 banks per bank group and 16 banks total: - // banks 0,4,8,12 are in bank group 0 - // banks 1,5,9,13 are in bank group 1 - // banks 2,6,10,14 are in bank group 2 - // banks 3,7,11,15 are in bank group 3 - rank->banks[b].bankgr = b % bankGroupsPerRank; - } else { - // No bank groups; simply assign to bank number - rank->banks[b].bankgr = b; - } - } } // perform a basic check of the write thresholds @@ -1626,16 +1602,37 @@ DRAMCtrl::minBankPrep(const deque<DRAMPacket*>& queue, return make_pair(bank_mask, hidden_bank_prep); } -DRAMCtrl::Rank::Rank(DRAMCtrl& _memory, const DRAMCtrlParams* _p) +DRAMCtrl::Rank::Rank(DRAMCtrl& _memory, const DRAMCtrlParams* _p, int rank) : EventManager(&_memory), memory(_memory), pwrStateTrans(PWR_IDLE), pwrStatePostRefresh(PWR_IDLE), pwrStateTick(0), refreshDueAt(0), pwrState(PWR_IDLE), - refreshState(REF_IDLE), inLowPowerState(false), rank(0), + refreshState(REF_IDLE), inLowPowerState(false), rank(rank), readEntries(0), writeEntries(0), outstandingEvents(0), - wakeUpAllowedAt(0), power(_p, false), numBanksActive(0), + wakeUpAllowedAt(0), power(_p, false), banks(_p->banks_per_rank), + numBanksActive(0), actTicks(_p->activation_limit, 0), writeDoneEvent(*this), activateEvent(*this), prechargeEvent(*this), refreshEvent(*this), powerEvent(*this), wakeUpEvent(*this) -{ } +{ + for (int b = 0; b < _p->banks_per_rank; b++) { + banks[b].bank = b; + // GDDR addressing of banks to BG is linear. + // Here we assume that all DRAM generations address bank groups as + // follows: + if (_p->bank_groups_per_rank > 0) { + // Simply assign lower bits to bank group in order to + // rotate across bank groups as banks are incremented + // e.g. with 4 banks per bank group and 16 banks total: + // banks 0,4,8,12 are in bank group 0 + // banks 1,5,9,13 are in bank group 1 + // banks 2,6,10,14 are in bank group 2 + // banks 3,7,11,15 are in bank group 3 + banks[b].bankgr = b % _p->bank_groups_per_rank; + } else { + // No bank groups; simply assign to bank number + banks[b].bankgr = b; + } + } +} void DRAMCtrl::Rank::startup(Tick ref_tick) diff --git a/src/mem/dram_ctrl.hh b/src/mem/dram_ctrl.hh index 12cb0e922..1883041cc 100644 --- a/src/mem/dram_ctrl.hh +++ b/src/mem/dram_ctrl.hh @@ -451,7 +451,7 @@ class DRAMCtrl : public AbstractMemory /** List to keep track of activate ticks */ std::deque<Tick> actTicks; - Rank(DRAMCtrl& _memory, const DRAMCtrlParams* _p); + Rank(DRAMCtrl& _memory, const DRAMCtrlParams* _p, int rank); const std::string name() const { |