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Diffstat (limited to 'src/mem/protocol/MOESI_hammer-cache.sm')
-rw-r--r--src/mem/protocol/MOESI_hammer-cache.sm123
1 files changed, 77 insertions, 46 deletions
diff --git a/src/mem/protocol/MOESI_hammer-cache.sm b/src/mem/protocol/MOESI_hammer-cache.sm
index 1f14db4f7..78bc9e3e7 100644
--- a/src/mem/protocol/MOESI_hammer-cache.sm
+++ b/src/mem/protocol/MOESI_hammer-cache.sm
@@ -278,7 +278,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
// ** IN_PORTS **
// Trigger Queue
- in_port(triggerQueue_in, TriggerMsg, triggerQueue) {
+ in_port(triggerQueue_in, TriggerMsg, triggerQueue, rank=3) {
if (triggerQueue_in.isReady()) {
peek(triggerQueue_in, TriggerMsg) {
@@ -298,10 +298,35 @@ machine(L1Cache, "AMD Hammer-like protocol")
}
}
- // Nothing from the request network
+ // Nothing from the unblock network
+
+ // Response Network
+ in_port(responseToCache_in, ResponseMsg, responseToCache, rank=2) {
+ if (responseToCache_in.isReady()) {
+ peek(responseToCache_in, ResponseMsg, block_on="Address") {
+
+ Entry cache_entry := getCacheEntry(in_msg.Address);
+ TBE tbe := TBEs[in_msg.Address];
+
+ if (in_msg.Type == CoherenceResponseType:ACK) {
+ trigger(Event:Ack, in_msg.Address, cache_entry, tbe);
+ } else if (in_msg.Type == CoherenceResponseType:ACK_SHARED) {
+ trigger(Event:Shared_Ack, in_msg.Address, cache_entry, tbe);
+ } else if (in_msg.Type == CoherenceResponseType:DATA) {
+ trigger(Event:Data, in_msg.Address, cache_entry, tbe);
+ } else if (in_msg.Type == CoherenceResponseType:DATA_SHARED) {
+ trigger(Event:Shared_Data, in_msg.Address, cache_entry, tbe);
+ } else if (in_msg.Type == CoherenceResponseType:DATA_EXCLUSIVE) {
+ trigger(Event:Exclusive_Data, in_msg.Address, cache_entry, tbe);
+ } else {
+ error("Unexpected message");
+ }
+ }
+ }
+ }
// Forward Network
- in_port(forwardToCache_in, RequestMsg, forwardToCache) {
+ in_port(forwardToCache_in, RequestMsg, forwardToCache, rank=1) {
if (forwardToCache_in.isReady()) {
peek(forwardToCache_in, RequestMsg, block_on="Address") {
@@ -339,35 +364,10 @@ machine(L1Cache, "AMD Hammer-like protocol")
}
}
- // Response Network
- in_port(responseToCache_in, ResponseMsg, responseToCache) {
- if (responseToCache_in.isReady()) {
- peek(responseToCache_in, ResponseMsg, block_on="Address") {
-
- Entry cache_entry := getCacheEntry(in_msg.Address);
- TBE tbe := TBEs[in_msg.Address];
-
- if (in_msg.Type == CoherenceResponseType:ACK) {
- trigger(Event:Ack, in_msg.Address, cache_entry, tbe);
- } else if (in_msg.Type == CoherenceResponseType:ACK_SHARED) {
- trigger(Event:Shared_Ack, in_msg.Address, cache_entry, tbe);
- } else if (in_msg.Type == CoherenceResponseType:DATA) {
- trigger(Event:Data, in_msg.Address, cache_entry, tbe);
- } else if (in_msg.Type == CoherenceResponseType:DATA_SHARED) {
- trigger(Event:Shared_Data, in_msg.Address, cache_entry, tbe);
- } else if (in_msg.Type == CoherenceResponseType:DATA_EXCLUSIVE) {
- trigger(Event:Exclusive_Data, in_msg.Address, cache_entry, tbe);
- } else {
- error("Unexpected message");
- }
- }
- }
- }
-
- // Nothing from the unblock network
+ // Nothing from the request network
// Mandatory Queue
- in_port(mandatoryQueue_in, CacheMsg, mandatoryQueue, desc="...") {
+ in_port(mandatoryQueue_in, CacheMsg, mandatoryQueue, desc="...", rank=0) {
if (mandatoryQueue_in.isReady()) {
peek(mandatoryQueue_in, CacheMsg, block_on="LineAddress") {
@@ -1017,8 +1017,16 @@ machine(L1Cache, "AMD Hammer-like protocol")
}
}
- action(zz_recycleMandatoryQueue, "\z", desc="Send the head of the mandatory queue to the back of the queue.") {
- mandatoryQueue_in.recycle();
+ action(zz_stallAndWaitMandatoryQueue, "\z", desc="Send the head of the mandatory queue to the back of the queue.") {
+ stall_and_wait(mandatoryQueue_in, address);
+ }
+
+ action(kd_wakeUpDependents, "kd", desc="wake-up dependents") {
+ wake_up_dependents(address);
+ }
+
+ action(ka_wakeUpAllDependents, "ka", desc="wake-up all dependents") {
+ wake_up_all_dependents();
}
//*****************************************************
@@ -1027,19 +1035,19 @@ machine(L1Cache, "AMD Hammer-like protocol")
// Transitions for Load/Store/L2_Replacement from transient states
transition({IM, SM, ISM, OM, IS, SS, OI, MI, II, IT, ST, OT, MT, MMT}, {Store, L2_Replacement}) {
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
}
transition({M_W, MM_W}, {L2_Replacement}) {
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
}
transition({IM, IS, OI, MI, II, IT, ST, OT, MT, MMT}, {Load, Ifetch}) {
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
}
transition({IM, SM, ISM, OM, IS, SS, MM_W, M_W, OI, MI, II, IT, ST, OT, MT, MMT}, L1_to_L2) {
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
}
transition({IT, ST, OT, MT, MMT}, {Other_GETX, NC_DMA_GETS, Other_GETS, Merged_GETS, Other_GETS_No_Mig, Invalidate}) {
@@ -1053,6 +1061,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
vv_allocateL2CacheBlock;
hp_copyFromTBEToL2;
s_deallocateTBE;
+ ka_wakeUpAllDependents;
}
transition(I, Trigger_L2_to_L1D, IT) {
@@ -1062,7 +1071,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1; // Not really needed for state I
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1073,7 +1082,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1084,7 +1093,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1095,7 +1104,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1106,7 +1115,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1117,7 +1126,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1128,7 +1137,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1139,7 +1148,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1150,7 +1159,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
@@ -1161,28 +1170,33 @@ machine(L1Cache, "AMD Hammer-like protocol")
nb_copyFromTBEToL1;
s_deallocateTBE;
uu_profileMiss;
- zz_recycleMandatoryQueue;
+ zz_stallAndWaitMandatoryQueue;
ll_L2toL1Transfer;
}
transition(IT, Complete_L2_to_L1, I) {
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
transition(ST, Complete_L2_to_L1, S) {
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
transition(OT, Complete_L2_to_L1, O) {
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
transition(MT, Complete_L2_to_L1, M) {
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
transition(MMT, Complete_L2_to_L1, MM) {
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
// Transitions from Idle
@@ -1212,6 +1226,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
transition(I, L2_Replacement) {
rr_deallocateL2CacheBlock;
+ ka_wakeUpAllDependents;
}
transition(I, {Other_GETX, NC_DMA_GETS, Other_GETS, Other_GETS_No_Mig, Invalidate}) {
@@ -1234,6 +1249,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
transition(S, L2_Replacement, I) {
rr_deallocateL2CacheBlock;
+ ka_wakeUpAllDependents;
}
transition(S, {Other_GETX, Invalidate}, I) {
@@ -1264,6 +1280,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
i_allocateTBE;
d_issuePUT;
rr_deallocateL2CacheBlock;
+ ka_wakeUpAllDependents;
}
transition(O, {Other_GETX, Invalidate}, I) {
@@ -1296,6 +1313,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
i_allocateTBE;
d_issuePUT;
rr_deallocateL2CacheBlock;
+ ka_wakeUpAllDependents;
}
transition(MM, {Other_GETX, Invalidate}, I) {
@@ -1338,6 +1356,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
i_allocateTBE;
d_issuePUT;
rr_deallocateL2CacheBlock;
+ ka_wakeUpAllDependents;
}
transition(M, {Other_GETX, Invalidate}, I) {
@@ -1386,6 +1405,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
o_checkForCompletion;
sx_external_store_hit;
n_popResponseQueue;
+ kd_wakeUpDependents;
}
// Transitions from SM
@@ -1424,6 +1444,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
gm_sendUnblockM;
s_deallocateTBE;
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
// Transitions from OM
@@ -1455,6 +1476,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
gm_sendUnblockM;
s_deallocateTBE;
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
// Transitions from IS
@@ -1484,6 +1506,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
hx_external_load_hit;
uo_updateCurrentOwner;
n_popResponseQueue;
+ kd_wakeUpDependents;
}
transition(IS, Exclusive_Data, M_W) {
@@ -1492,6 +1515,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
o_checkForCompletion;
hx_external_load_hit;
n_popResponseQueue;
+ kd_wakeUpDependents;
}
transition(IS, Shared_Data, SS) {
@@ -1502,6 +1526,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
hx_external_load_hit;
uo_updateCurrentOwner;
n_popResponseQueue;
+ kd_wakeUpDependents;
}
// Transitions from SS
@@ -1549,6 +1574,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
gm_sendUnblockM;
s_deallocateTBE;
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
// Transitions from M_W
@@ -1568,6 +1594,7 @@ machine(L1Cache, "AMD Hammer-like protocol")
gm_sendUnblockM;
s_deallocateTBE;
j_popTriggerQueue;
+ kd_wakeUpDependents;
}
// Transitions from OI/MI
@@ -1591,12 +1618,14 @@ machine(L1Cache, "AMD Hammer-like protocol")
t_sendExclusiveDataFromTBEToMemory;
s_deallocateTBE;
l_popForwardQueue;
+ kd_wakeUpDependents;
}
transition(OI, Writeback_Ack, I) {
qq_sendDataFromTBEToMemory;
s_deallocateTBE;
l_popForwardQueue;
+ kd_wakeUpDependents;
}
// Transitions from II
@@ -1609,10 +1638,12 @@ machine(L1Cache, "AMD Hammer-like protocol")
g_sendUnblock;
s_deallocateTBE;
l_popForwardQueue;
+ kd_wakeUpDependents;
}
transition(II, Writeback_Nack, I) {
s_deallocateTBE;
l_popForwardQueue;
+ kd_wakeUpDependents;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-09 06:41:38 +0000