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author | Ali Saidi <saidi@eecs.umich.edu> | 2007-05-15 17:39:50 -0400 |
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committer | Ali Saidi <saidi@eecs.umich.edu> | 2007-05-15 17:39:50 -0400 |
commit | f317227b4e5002b2c9d7c2e5068d317dcea5b0f9 (patch) | |
tree | 57af4fc1e08ff1f1a323df24d1fe330d9705e9e2 /src/mem/bridge.hh | |
parent | fcf85725b5d2d67458c00680948d0a7baab942d4 (diff) | |
download | gem5-f317227b4e5002b2c9d7c2e5068d317dcea5b0f9.tar.xz |
hopefully the final hacky change to make the bus bridge work ok
cache blocks that get dmaed ARE NOT marked invalid in the caches so it's a performance issue here
src/mem/bridge.cc:
src/mem/bridge.hh:
hopefully the final hacky change to make the bus bridge work ok
--HG--
extra : convert_revision : 62cbc65c74d1a84199f0a376546ec19994c5899c
Diffstat (limited to 'src/mem/bridge.hh')
-rw-r--r-- | src/mem/bridge.hh | 51 |
1 files changed, 1 insertions, 50 deletions
diff --git a/src/mem/bridge.hh b/src/mem/bridge.hh index 5951eeb98..a47fe3c1e 100644 --- a/src/mem/bridge.hh +++ b/src/mem/bridge.hh @@ -80,14 +80,10 @@ class Bridge : public MemObject short origSrc; bool expectResponse; - bool partialWriteFixed; - PacketPtr oldPkt; - PacketBuffer(PacketPtr _pkt, Tick t, bool nack = false) : ready(t), pkt(_pkt), origSenderState(_pkt->senderState), origSrc(_pkt->getSrc()), - expectResponse(_pkt->needsResponse() && !nack), - partialWriteFixed(false) + expectResponse(_pkt->needsResponse() && !nack) { if (!pkt->isResponse() && !nack && pkt->result != Packet::Nacked) @@ -99,52 +95,7 @@ class Bridge : public MemObject assert(pkt->senderState == this); pkt->setDest(origSrc); pkt->senderState = origSenderState; - if (partialWriteFixed) - delete oldPkt; - } - - void partialWriteFix(Port *port) - { - assert(!partialWriteFixed); - assert(expectResponse); - - Addr pbs = port->peerBlockSize(); - Addr blockAddr = pkt->getAddr() & ~(pbs-1); - partialWriteFixed = true; - PacketDataPtr data; - - data = new uint8_t[pbs]; - RequestPtr funcReq = new Request(blockAddr, 4, 0); - PacketPtr funcPkt = new Packet(funcReq, MemCmd::ReadReq, - Packet::Broadcast); - for (int x = 0; x < pbs; x+=4) { - funcReq->setPhys(blockAddr + x, 4, 0); - funcPkt->reinitFromRequest(); - funcPkt->dataStatic(data + x); - port->sendFunctional(funcPkt); - assert(funcPkt->result == Packet::Success); - } - delete funcPkt; - delete funcReq; - - oldPkt = pkt; - memcpy(data + oldPkt->getOffset(pbs), pkt->getPtr<uint8_t>(), - pkt->getSize()); - pkt = new Packet(oldPkt->req, MemCmd::WriteInvalidateReq, - Packet::Broadcast, pbs); - pkt->dataDynamicArray(data); - pkt->senderState = oldPkt->senderState; } - - void undoPartialWriteFix() - { - if (!partialWriteFixed) - return; - delete pkt; - pkt = oldPkt; - partialWriteFixed = false; - } - }; /** |