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-rw-r--r--src/mem/cache/base_cache.cc18
-rw-r--r--src/mem/cache/base_cache.hh14
-rw-r--r--src/mem/cache/cache_impl.hh12
-rw-r--r--src/mem/cache/miss/mshr_queue.cc2
4 files changed, 36 insertions, 10 deletions
diff --git a/src/mem/cache/base_cache.cc b/src/mem/cache/base_cache.cc
index 30c996d4f..6250b72d4 100644
--- a/src/mem/cache/base_cache.cc
+++ b/src/mem/cache/base_cache.cc
@@ -179,16 +179,23 @@ BaseCache::CachePort::recvRetry()
return;
}
pkt = cache->getPacket();
- MSHR* mshr = (MSHR*)pkt->senderState;
+ MSHR* mshr = (MSHR*) pkt->senderState;
//Copy the packet, it may be modified/destroyed elsewhere
Packet * copyPkt = new Packet(*pkt);
copyPkt->dataStatic<uint8_t>(pkt->getPtr<uint8_t>());
mshr->pkt = copyPkt;
+
bool success = sendTiming(pkt);
DPRINTF(Cache, "Address %x was %s in sending the timing request\n",
pkt->getAddr(), success ? "succesful" : "unsuccesful");
- cache->sendResult(pkt, mshr, success);
+
waitingOnRetry = !success;
+ if (waitingOnRetry) {
+ DPRINTF(CachePort, "%s now waiting on a retry\n", name());
+ }
+
+ cache->sendResult(pkt, mshr, success);
+
if (success && cache->doMasterRequest())
{
DPRINTF(CachePort, "%s has more requests\n", name());
@@ -301,10 +308,13 @@ BaseCache::CacheEvent::process()
bool success = cachePort->sendTiming(pkt);
DPRINTF(Cache, "Address %x was %s in sending the timing request\n",
pkt->getAddr(), success ? "succesful" : "unsuccesful");
- cachePort->cache->sendResult(pkt, mshr, success);
+
cachePort->waitingOnRetry = !success;
- if (cachePort->waitingOnRetry)
+ if (cachePort->waitingOnRetry) {
DPRINTF(CachePort, "%s now waiting on a retry\n", cachePort->name());
+ }
+
+ cachePort->cache->sendResult(pkt, mshr, success);
if (success && cachePort->cache->doMasterRequest())
{
DPRINTF(CachePort, "%s still more MSHR requests to send\n",
diff --git a/src/mem/cache/base_cache.hh b/src/mem/cache/base_cache.hh
index 7a9e57430..8814abb38 100644
--- a/src/mem/cache/base_cache.hh
+++ b/src/mem/cache/base_cache.hh
@@ -525,8 +525,11 @@ class BaseCache : public MemObject
reqCpu->schedule(time);
}
else {
- if (pkt->cmd == Packet::Writeback) delete pkt->req;
- delete pkt;
+ if (pkt->cmd != Packet::UpgradeReq)
+ {
+ delete pkt->req;
+ delete pkt;
+ }
}
}
@@ -545,8 +548,11 @@ class BaseCache : public MemObject
reqCpu->schedule(time);
}
else {
- if (pkt->cmd == Packet::Writeback) delete pkt->req;
- delete pkt;
+ if (pkt->cmd != Packet::UpgradeReq)
+ {
+ delete pkt->req;
+ delete pkt;
+ }
}
}
diff --git a/src/mem/cache/cache_impl.hh b/src/mem/cache/cache_impl.hh
index a64ce4e09..44d7b4895 100644
--- a/src/mem/cache/cache_impl.hh
+++ b/src/mem/cache/cache_impl.hh
@@ -273,9 +273,14 @@ void
Cache<TagStore,Buffering,Coherence>::sendResult(PacketPtr &pkt, MSHR* mshr, bool success)
{
if (success && !(pkt && (pkt->flags & NACKED_LINE))) {
+ if (!mshr->pkt->needsResponse() && !(mshr->pkt->cmd == Packet::UpgradeReq)
+ && (pkt && (pkt->flags & SATISFIED))) {
+ //Writeback, clean up the non copy version of the packet
+ delete pkt;
+ }
missQueue->markInService(mshr->pkt, mshr);
//Temp Hack for UPGRADES
- if (mshr->pkt->cmd == Packet::UpgradeReq) {
+ if (mshr->pkt && mshr->pkt->cmd == Packet::UpgradeReq) {
assert(pkt); //Upgrades need to be fixed
pkt->flags &= ~CACHE_LINE_FILL;
BlkType *blk = tags->findBlock(pkt);
@@ -295,6 +300,11 @@ Cache<TagStore,Buffering,Coherence>::sendResult(PacketPtr &pkt, MSHR* mshr, bool
pkt->flags &= ~NACKED_LINE;
pkt->flags &= ~SATISFIED;
pkt->flags &= ~SNOOP_COMMIT;
+
+//Rmove copy from mshr
+ delete mshr->pkt;
+ mshr->pkt = pkt;
+
missQueue->restoreOrigCmd(pkt);
}
}
diff --git a/src/mem/cache/miss/mshr_queue.cc b/src/mem/cache/miss/mshr_queue.cc
index 1876a8987..9d2a692cf 100644
--- a/src/mem/cache/miss/mshr_queue.cc
+++ b/src/mem/cache/miss/mshr_queue.cc
@@ -213,7 +213,7 @@ void
MSHRQueue::markInService(MSHR* mshr)
{
//assert(mshr == pendingList.front());
- if (!(mshr->pkt->needsResponse() || mshr->pkt->cmd == Packet::UpgradeReq)) {
+ if (!mshr->pkt->needsResponse() && !(mshr->pkt->cmd == Packet::UpgradeReq)) {
assert(mshr->getNumTargets() == 0);
if ((mshr->pkt->flags & SATISFIED) && (mshr->pkt->cmd == Packet::Writeback)) {
//Writeback hit, so delete it