diff options
Diffstat (limited to 'src/mem/protocol/MOESI_CMP_token-L1cache.sm')
| -rw-r--r-- | src/mem/protocol/MOESI_CMP_token-L1cache.sm | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/src/mem/protocol/MOESI_CMP_token-L1cache.sm b/src/mem/protocol/MOESI_CMP_token-L1cache.sm index 5533a34dc..365a963b9 100644 --- a/src/mem/protocol/MOESI_CMP_token-L1cache.sm +++ b/src/mem/protocol/MOESI_CMP_token-L1cache.sm @@ -38,10 +38,14 @@ machine(L1Cache, "Token protocol") CacheMemory * L1DcacheMemory, int l2_select_num_bits, int N_tokens, - int l1_request_latency = 2, - int l1_response_latency = 2, + + Cycles l1_request_latency = 2, + Cycles l1_response_latency = 2, int retry_threshold = 1, - int fixed_timeout_latency = 100, + Cycles fixed_timeout_latency = 100, + Cycles reissue_wakeup_latency = 10, + Cycles use_timeout_latency = 50, + bool dynamic_timeout_enabled = true, bool no_mig_atomic = true, bool send_evictions @@ -195,19 +199,20 @@ machine(L1Cache, "Token protocol") int outstandingRequests, default="0"; int outstandingPersistentRequests, default="0"; - int averageLatencyHysteresis, default="(8)"; // Constant that provides hysteresis for calculated the estimated average - int averageLatencyCounter, default="(500 << (*m_L1Cache_averageLatencyHysteresis_ptr))"; + // Constant that provides hysteresis for calculated the estimated average + int averageLatencyHysteresis, default="(8)"; + Cycles averageLatencyCounter, + default="(Cycles(500) << (*m_L1Cache_averageLatencyHysteresis_ptr))"; - int averageLatencyEstimate() { + Cycles averageLatencyEstimate() { DPRINTF(RubySlicc, "%d\n", (averageLatencyCounter >> averageLatencyHysteresis)); //profile_average_latency_estimate( (averageLatencyCounter >> averageLatencyHysteresis) ); return averageLatencyCounter >> averageLatencyHysteresis; } - void updateAverageLatencyEstimate(int latency) { + void updateAverageLatencyEstimate(Cycles latency) { DPRINTF(RubySlicc, "%d\n", latency); - assert(latency >= 0); // By subtracting the current average and then adding the most // recent sample, we calculate an estimate of the recent average. @@ -781,7 +786,7 @@ machine(L1Cache, "Token protocol") // IssueCount. // Set a wakeup timer - reissueTimerTable.set(address, 10); + reissueTimerTable.set(address, reissue_wakeup_latency); } } else { @@ -834,7 +839,7 @@ machine(L1Cache, "Token protocol") // Set a wakeup timer if (dynamic_timeout_enabled) { - reissueTimerTable.set(address, 1.25 * averageLatencyEstimate()); + reissueTimerTable.set(address, (5 * averageLatencyEstimate()) / 4); } else { reissueTimerTable.set(address, fixed_timeout_latency); } @@ -902,10 +907,9 @@ machine(L1Cache, "Token protocol") // IssueCount. // Set a wakeup timer - reissueTimerTable.set(address, 10); + reissueTimerTable.set(address, reissue_wakeup_latency); } - } else { // Make a normal request enqueue(requestNetwork_out, RequestMsg, latency = l1_request_latency) { @@ -961,7 +965,7 @@ machine(L1Cache, "Token protocol") // Set a wakeup timer if (dynamic_timeout_enabled) { - reissueTimerTable.set(address, 1.25 * averageLatencyEstimate()); + reissueTimerTable.set(address, (5 * averageLatencyEstimate()) / 4); } else { reissueTimerTable.set(address, fixed_timeout_latency); } @@ -1381,7 +1385,7 @@ machine(L1Cache, "Token protocol") } action(o_scheduleUseTimeout, "o", desc="Schedule a use timeout.") { - useTimerTable.set(address, 50); + useTimerTable.set(address, use_timeout_latency); } action(p_informL2AboutTokenLoss, "p", desc="Inform L2 about loss of all tokens") { @@ -1448,7 +1452,7 @@ machine(L1Cache, "Token protocol") // Update average latency if (tbe.IssueCount <= 1) { if (tbe.ExternalResponse == true) { - updateAverageLatencyEstimate(time_to_int(curCycle()) - time_to_int(tbe.IssueTime)); + updateAverageLatencyEstimate(TimeToCycles(curCycle() - tbe.IssueTime)); } } |