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MOESI_hammer: fixed dma bug with shared data

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This commit is contained in:
Brad Beckmann 2011-03-19 14:17:48 -07:00
parent a2e98f191f
commit 31d0a421a9
2 changed files with 32 additions and 7 deletions
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35
src/mem/protocol/MOESI_hammer-cache.sm
View file

@ -560,7 +560,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
}
}
action(ee_sendDataShared, "\e", desc="Send data from cache to requestor, keep a shared copy") {
action(ee_sendDataShared, "\e", desc="Send data from cache to requestor, remaining the owner") {
peek(forwardToCache_in, RequestMsg) {
enqueue(responseNetwork_out, ResponseMsg, latency=cache_response_latency) {
assert(is_valid(cache_entry));
@ -584,7 +584,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
}
}
action(em_sendDataSharedMultiple, "em", desc="Send data from cache to all requestors") {
action(em_sendDataSharedMultiple, "em", desc="Send data from cache to all requestors, still the owner") {
peek(forwardToCache_in, RequestMsg) {
enqueue(responseNetwork_out, ResponseMsg, latency=cache_response_latency) {
assert(is_valid(cache_entry));
@ -874,12 +874,37 @@ machine(L1Cache, "AMD Hammer-like protocol")
}
}
action(qm_sendDataFromTBEToCache, "qm", desc="Send data from TBE to cache, multiple sharers") {
action(sq_sendSharedDataFromTBEToCache, "sq", desc="Send shared data from TBE to cache, still the owner") {
peek(forwardToCache_in, RequestMsg) {
assert(in_msg.Requestor != machineID);
enqueue(responseNetwork_out, ResponseMsg, latency=cache_response_latency) {
assert(is_valid(tbe));
out_msg.Address := address;
out_msg.Type := CoherenceResponseType:DATA_SHARED;
out_msg.Sender := machineID;
out_msg.Destination.add(in_msg.Requestor);
DPRINTF(RubySlicc, "%s\n", out_msg.Destination);
out_msg.DataBlk := tbe.DataBlk;
out_msg.Dirty := tbe.Dirty;
if (in_msg.DirectedProbe) {
out_msg.Acks := machineCount(MachineType:L1Cache);
} else {
out_msg.Acks := 2;
}
out_msg.SilentAcks := in_msg.SilentAcks;
out_msg.MessageSize := MessageSizeType:Response_Data;
out_msg.InitialRequestTime := in_msg.InitialRequestTime;
out_msg.ForwardRequestTime := in_msg.ForwardRequestTime;
}
}
}
action(qm_sendDataFromTBEToCache, "qm", desc="Send data from TBE to cache, multiple sharers, still the owner") {
peek(forwardToCache_in, RequestMsg) {
enqueue(responseNetwork_out, ResponseMsg, latency=cache_response_latency) {
assert(is_valid(tbe));
out_msg.Address := address;
out_msg.Type := CoherenceResponseType:DATA;
out_msg.Type := CoherenceResponseType:DATA_SHARED;
out_msg.Sender := machineID;
out_msg.Destination := in_msg.MergedRequestors;
DPRINTF(RubySlicc, "%s\n", out_msg.Destination);
@ -1599,7 +1624,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
}
transition({OI, MI}, {NC_DMA_GETS, Other_GETS, Other_GETS_No_Mig}, OI) {
q_sendDataFromTBEToCache;
sq_sendSharedDataFromTBEToCache;
l_popForwardQueue;
}

4
src/mem/protocol/MOESI_hammer-dir.sm
View file

@ -1500,14 +1500,14 @@ machine(Directory, "AMD Hammer-like protocol")
transition(O_DR_B, Shared_Ack) {
m_decrementNumberOfMessages;
so_setOwnerBit;
r_setSharerBit;
o_checkForCompletion;
n_popResponseQueue;
}
transition(O_DR_B_W, Shared_Ack) {
m_decrementNumberOfMessages;
so_setOwnerBit;
r_setSharerBit;
n_popResponseQueue;
}