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hammer: fixed dma uniproc error

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Fixed an error reguarding DMA for uninprocessor systems.  Basically removed an
overly agressive optimization that lead to inconsistent state between the
cache and the directory.
This commit is contained in:
Brad Beckmann
2011-04-01 15:50:23 -07:00
parent 01fc529bb2
commit 0788ea7b3b
1 changed files with 5 additions and 5 deletions
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10
src/mem/protocol/MOESI_hammer-cache.sm
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@@ -1532,8 +1532,8 @@ machine(L1Cache, "AMD Hammer-like protocol")
l_popForwardQueue;
}
transition(MM, NC_DMA_GETS) {
c_sendExclusiveData;
transition(MM, NC_DMA_GETS, O) {
ee_sendDataShared;
l_popForwardQueue;
}
@@ -1575,7 +1575,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
l_popForwardQueue;
}
transition(M, NC_DMA_GETS) {
transition(M, NC_DMA_GETS, O) {
ee_sendDataShared;
l_popForwardQueue;
}
@@ -1933,8 +1933,8 @@ machine(L1Cache, "AMD Hammer-like protocol")
l_popForwardQueue;
}
transition(MM_F, NC_DMA_GETS) {
ct_sendExclusiveDataFromTBE;
transition(MM_F, NC_DMA_GETS, OM_F) {
sq_sendSharedDataFromTBEToCache;
l_popForwardQueue;
}