Debugging info
src/base/traceflags.py: Add new flags for cacheport src/mem/bus.cc: Add debugging info src/mem/cache/base_cache.cc: Add debuggin info --HG-- extra : convert_revision : a6c4b452466a8e0b50a86e886833cb6e29edc748
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27c59dc370
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@ -58,6 +58,7 @@ baseFlags = [
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'BusAddrRanges',
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'BusBridge',
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'Cache',
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'CachePort',
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'Chains',
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'Checker',
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'Clock',
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@ -95,6 +95,7 @@ Bus::recvTiming(Packet *pkt)
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// one, put this device on the retry list.
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if (tickNextIdle > curTick ||
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(retryList.size() && (!inRetry || pktPort != retryList.front()))) {
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DPRINTF(Bus, "Adding RETRY for %i\n", pktPort);
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addToRetryList(pktPort);
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return false;
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}
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@ -108,6 +109,7 @@ Bus::recvTiming(Packet *pkt)
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if (pkt->flags & SATISFIED) {
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//Cache-Cache transfer occuring
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if (inRetry) {
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DPRINTF(Bus, "Removing RETRY %i\n", retryList.front());
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retryList.pop_front();
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inRetry = false;
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}
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@ -116,6 +118,7 @@ Bus::recvTiming(Packet *pkt)
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port = findPort(pkt->getAddr(), pkt->getSrc());
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} else {
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//Snoop didn't succeed
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DPRINTF(Bus, "Snoop caused adding to RETRY list %i\n", pktPort);
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addToRetryList(pktPort);
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return false;
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}
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@ -181,6 +184,7 @@ Bus::recvTiming(Packet *pkt)
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// Packet was successfully sent. Return true.
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// Also take care of retries
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if (inRetry) {
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DPRINTF(Bus, "Remove retry from list %i\n", retryList.front());
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retryList.pop_front();
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inRetry = false;
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}
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@ -188,6 +192,7 @@ Bus::recvTiming(Packet *pkt)
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}
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// Packet not successfully sent. Leave or put it on the retry list.
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DPRINTF(Bus, "Adding a retry to RETRY list %i\n", pktPort);
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addToRetryList(pktPort);
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return false;
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}
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@ -195,10 +200,12 @@ Bus::recvTiming(Packet *pkt)
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void
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Bus::recvRetry(int id)
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{
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DPRINTF(Bus, "Received a retry\n");
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// If there's anything waiting...
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if (retryList.size()) {
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//retryingPort = retryList.front();
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inRetry = true;
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DPRINTF(Bus, "Sending a retry\n");
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retryList.front()->sendRetry();
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// If inRetry is still true, sendTiming wasn't called
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if (inRetry)
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@ -258,8 +265,8 @@ Bus::findSnoopPorts(Addr addr, int id)
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//Careful to not overlap ranges
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//or snoop will be called more than once on the port
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ports.push_back(portSnoopList[i].portId);
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DPRINTF(Bus, " found snoop addr %#llx on device%d\n", addr,
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portSnoopList[i].portId);
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// DPRINTF(Bus, " found snoop addr %#llx on device%d\n", addr,
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// portSnoopList[i].portId);
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}
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i++;
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}
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26
src/mem/cache/base_cache.cc
vendored
26
src/mem/cache/base_cache.cc
vendored
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@ -116,12 +116,16 @@ BaseCache::CachePort::recvRetry()
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Packet *pkt;
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assert(waitingOnRetry);
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if (!drainList.empty()) {
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DPRINTF(CachePort, "%s attempting to send a retry for response\n", name());
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//We have some responses to drain first
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if (sendTiming(drainList.front())) {
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DPRINTF(CachePort, "%s sucessful in sending a retry for response\n", name());
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drainList.pop_front();
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if (!drainList.empty() ||
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!isCpuSide && cache->doMasterRequest() ||
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isCpuSide && cache->doSlaveRequest()) {
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DPRINTF(CachePort, "%s has more responses/requests\n", name());
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BaseCache::CacheEvent * reqCpu = new BaseCache::CacheEvent(this);
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reqCpu->schedule(curTick + 1);
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}
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@ -130,6 +134,7 @@ BaseCache::CachePort::recvRetry()
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}
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else if (!isCpuSide)
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{
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DPRINTF(CachePort, "%s attempting to send a retry for MSHR\n", name());
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assert(cache->doMasterRequest());
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pkt = cache->getPacket();
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MSHR* mshr = (MSHR*)pkt->senderState;
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@ -140,6 +145,7 @@ BaseCache::CachePort::recvRetry()
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waitingOnRetry = !success;
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if (success && cache->doMasterRequest())
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{
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DPRINTF(CachePort, "%s has more requests\n", name());
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//Still more to issue, rerequest in 1 cycle
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pkt = NULL;
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BaseCache::CacheEvent * reqCpu = new BaseCache::CacheEvent(this);
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@ -163,6 +169,8 @@ BaseCache::CachePort::recvRetry()
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cshrRetry = NULL;
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}
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}
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if (waitingOnRetry) DPRINTF(CachePort, "%s STILL Waiting on retry\n", name());
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else DPRINTF(CachePort, "%s no longer waiting on retry\n", name());
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return;
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}
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void
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@ -210,17 +218,26 @@ BaseCache::CacheEvent::process()
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if (cachePort->waitingOnRetry) return;
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//We have some responses to drain first
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if (!cachePort->drainList.empty()) {
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DPRINTF(CachePort, "%s trying to drain a response\n", cachePort->name());
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if (cachePort->sendTiming(cachePort->drainList.front())) {
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DPRINTF(CachePort, "%s drains a response succesfully\n", cachePort->name());
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cachePort->drainList.pop_front();
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if (!cachePort->drainList.empty() ||
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!cachePort->isCpuSide && cachePort->cache->doMasterRequest() ||
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cachePort->isCpuSide && cachePort->cache->doSlaveRequest())
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cachePort->isCpuSide && cachePort->cache->doSlaveRequest()) {
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DPRINTF(CachePort, "%s still has outstanding bus reqs\n", cachePort->name());
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this->schedule(curTick + 1);
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}
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else cachePort->waitingOnRetry = true;
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}
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else {
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cachePort->waitingOnRetry = true;
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DPRINTF(CachePort, "%s now waiting on a retry\n", cachePort->name());
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}
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}
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else if (!cachePort->isCpuSide)
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{
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DPRINTF(CachePort, "%s trying to send a MSHR request\n", cachePort->name());
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assert(cachePort->cache->doMasterRequest());
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//MSHR
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pkt = cachePort->cache->getPacket();
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@ -230,8 +247,10 @@ BaseCache::CacheEvent::process()
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pkt->getAddr(), success ? "succesful" : "unsuccesful");
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cachePort->cache->sendResult(pkt, mshr, success);
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cachePort->waitingOnRetry = !success;
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if (cachePort->waitingOnRetry) DPRINTF(CachePort, "%s now waiting on a retry\n", cachePort->name());
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if (success && cachePort->cache->doMasterRequest())
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{
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DPRINTF(CachePort, "%s still more MSHR requests to send\n", cachePort->name());
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//Still more to issue, rerequest in 1 cycle
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pkt = NULL;
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this->schedule(curTick+1);
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@ -264,12 +283,15 @@ BaseCache::CacheEvent::process()
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else
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pkt->result = Packet::Success;
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pkt->makeTimingResponse();
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DPRINTF(CachePort, "%s attempting to send a response\n", cachePort->name());
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if (!cachePort->drainList.empty()) {
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//Already have a list, just append
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cachePort->drainList.push_back(pkt);
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DPRINTF(CachePort, "%s appending response onto drain list\n", cachePort->name());
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}
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else if (!cachePort->sendTiming(pkt)) {
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//It failed, save it to list of drain events
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DPRINTF(CachePort, "%s now waiting for a retry\n", cachePort->name());
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cachePort->drainList.push_back(pkt);
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cachePort->waitingOnRetry = true;
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}
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