diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mem/dram_ctrl.cc | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/src/mem/dram_ctrl.cc b/src/mem/dram_ctrl.cc index ada70279f..4398611e5 100644 --- a/src/mem/dram_ctrl.cc +++ b/src/mem/dram_ctrl.cc @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010-2016 ARM Limited + * Copyright (c) 2010-2017 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -678,18 +678,20 @@ DRAMCtrl::processRespondEvent() // read response received, decrement count --dram_pkt->rankRef.outstandingEvents; - // at this moment should be either ACT or IDLE depending on - // if PRE has occurred to close all banks - assert((dram_pkt->rankRef.pwrState == PWR_ACT) || - (dram_pkt->rankRef.pwrState == PWR_IDLE)); + // at this moment should not have transitioned to a low-power state + assert((dram_pkt->rankRef.pwrState != PWR_SREF) && + (dram_pkt->rankRef.pwrState != PWR_PRE_PDN) && + (dram_pkt->rankRef.pwrState != PWR_ACT_PDN)); // track if this is the last packet before idling // and that there are no outstanding commands to this rank - if (dram_pkt->rankRef.lowPowerEntryReady()) { + // if REF in progress, transition to LP state should not occur + // until REF completes + if ((dram_pkt->rankRef.refreshState == REF_IDLE) && + (dram_pkt->rankRef.lowPowerEntryReady())) { // verify that there are no events scheduled assert(!dram_pkt->rankRef.activateEvent.scheduled()); assert(!dram_pkt->rankRef.prechargeEvent.scheduled()); - assert(dram_pkt->rankRef.refreshState == REF_IDLE); // if coming from active state, schedule power event to // active power-down else go to precharge power-down |