diff options
Diffstat (limited to 'src/mem/cache/base_cache.cc')
| -rw-r--r-- | src/mem/cache/base_cache.cc | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/src/mem/cache/base_cache.cc b/src/mem/cache/base_cache.cc index 4df13fb2b..cdb9d5475 100644 --- a/src/mem/cache/base_cache.cc +++ b/src/mem/cache/base_cache.cc @@ -116,12 +116,16 @@ BaseCache::CachePort::recvRetry() Packet *pkt; assert(waitingOnRetry); if (!drainList.empty()) { + DPRINTF(CachePort, "%s attempting to send a retry for response\n", name()); //We have some responses to drain first if (sendTiming(drainList.front())) { + DPRINTF(CachePort, "%s sucessful in sending a retry for response\n", name()); drainList.pop_front(); if (!drainList.empty() || !isCpuSide && cache->doMasterRequest() || isCpuSide && cache->doSlaveRequest()) { + + DPRINTF(CachePort, "%s has more responses/requests\n", name()); BaseCache::CacheEvent * reqCpu = new BaseCache::CacheEvent(this); reqCpu->schedule(curTick + 1); } @@ -130,6 +134,7 @@ BaseCache::CachePort::recvRetry() } else if (!isCpuSide) { + DPRINTF(CachePort, "%s attempting to send a retry for MSHR\n", name()); assert(cache->doMasterRequest()); pkt = cache->getPacket(); MSHR* mshr = (MSHR*)pkt->senderState; @@ -140,6 +145,7 @@ BaseCache::CachePort::recvRetry() waitingOnRetry = !success; if (success && cache->doMasterRequest()) { + DPRINTF(CachePort, "%s has more requests\n", name()); //Still more to issue, rerequest in 1 cycle pkt = NULL; BaseCache::CacheEvent * reqCpu = new BaseCache::CacheEvent(this); @@ -163,6 +169,8 @@ BaseCache::CachePort::recvRetry() cshrRetry = NULL; } } + if (waitingOnRetry) DPRINTF(CachePort, "%s STILL Waiting on retry\n", name()); + else DPRINTF(CachePort, "%s no longer waiting on retry\n", name()); return; } void @@ -210,17 +218,26 @@ BaseCache::CacheEvent::process() if (cachePort->waitingOnRetry) return; //We have some responses to drain first if (!cachePort->drainList.empty()) { + DPRINTF(CachePort, "%s trying to drain a response\n", cachePort->name()); if (cachePort->sendTiming(cachePort->drainList.front())) { + DPRINTF(CachePort, "%s drains a response succesfully\n", cachePort->name()); cachePort->drainList.pop_front(); if (!cachePort->drainList.empty() || !cachePort->isCpuSide && cachePort->cache->doMasterRequest() || - cachePort->isCpuSide && cachePort->cache->doSlaveRequest()) + cachePort->isCpuSide && cachePort->cache->doSlaveRequest()) { + + DPRINTF(CachePort, "%s still has outstanding bus reqs\n", cachePort->name()); this->schedule(curTick + 1); + } + } + else { + cachePort->waitingOnRetry = true; + DPRINTF(CachePort, "%s now waiting on a retry\n", cachePort->name()); } - else cachePort->waitingOnRetry = true; } else if (!cachePort->isCpuSide) { + DPRINTF(CachePort, "%s trying to send a MSHR request\n", cachePort->name()); assert(cachePort->cache->doMasterRequest()); //MSHR pkt = cachePort->cache->getPacket(); @@ -230,8 +247,10 @@ BaseCache::CacheEvent::process() pkt->getAddr(), success ? "succesful" : "unsuccesful"); cachePort->cache->sendResult(pkt, mshr, success); cachePort->waitingOnRetry = !success; + if (cachePort->waitingOnRetry) DPRINTF(CachePort, "%s now waiting on a retry\n", cachePort->name()); if (success && cachePort->cache->doMasterRequest()) { + DPRINTF(CachePort, "%s still more MSHR requests to send\n", cachePort->name()); //Still more to issue, rerequest in 1 cycle pkt = NULL; this->schedule(curTick+1); @@ -264,12 +283,15 @@ BaseCache::CacheEvent::process() else pkt->result = Packet::Success; pkt->makeTimingResponse(); + DPRINTF(CachePort, "%s attempting to send a response\n", cachePort->name()); if (!cachePort->drainList.empty()) { //Already have a list, just append cachePort->drainList.push_back(pkt); + DPRINTF(CachePort, "%s appending response onto drain list\n", cachePort->name()); } else if (!cachePort->sendTiming(pkt)) { //It failed, save it to list of drain events + DPRINTF(CachePort, "%s now waiting for a retry\n", cachePort->name()); cachePort->drainList.push_back(pkt); cachePort->waitingOnRetry = true; } |