114184Sgabeblack@google.com/* 214184Sgabeblack@google.com * Copyright (c) 2011-2015 Advanced Micro Devices, Inc. 314184Sgabeblack@google.com * All rights reserved. 414184Sgabeblack@google.com * 514184Sgabeblack@google.com * For use for simulation and test purposes only 614184Sgabeblack@google.com * 714184Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 814184Sgabeblack@google.com * modification, are permitted provided that the following conditions are met: 914184Sgabeblack@google.com * 1014184Sgabeblack@google.com * 1. Redistributions of source code must retain the above copyright notice, 1114184Sgabeblack@google.com * this list of conditions and the following disclaimer. 1214184Sgabeblack@google.com * 1314184Sgabeblack@google.com * 2. Redistributions in binary form must reproduce the above copyright notice, 1414184Sgabeblack@google.com * this list of conditions and the following disclaimer in the documentation 1514184Sgabeblack@google.com * and/or other materials provided with the distribution. 1614184Sgabeblack@google.com * 1714184Sgabeblack@google.com * 3. Neither the name of the copyright holder nor the names of its 1814184Sgabeblack@google.com * contributors may be used to endorse or promote products derived from this 1914184Sgabeblack@google.com * software without specific prior written permission. 2014184Sgabeblack@google.com * 2114184Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 2214184Sgabeblack@google.com * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2314184Sgabeblack@google.com * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2414184Sgabeblack@google.com * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 2514184Sgabeblack@google.com * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2614184Sgabeblack@google.com * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2714184Sgabeblack@google.com * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2814184Sgabeblack@google.com * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2914184Sgabeblack@google.com * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3014184Sgabeblack@google.com * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 3114184Sgabeblack@google.com * POSSIBILITY OF SUCH DAMAGE. 3214184Sgabeblack@google.com * 3314184Sgabeblack@google.com * Authors: Lisa Hsu 3414184Sgabeblack@google.com */ 3514184Sgabeblack@google.com 3614184Sgabeblack@google.commachine(MachineType:SQC, "GPU SQC (L1 I Cache)") 3714184Sgabeblack@google.com : Sequencer* sequencer; 3814184Sgabeblack@google.com CacheMemory * L1cache; 3914184Sgabeblack@google.com int TCC_select_num_bits; 4014184Sgabeblack@google.com Cycles issue_latency := 80; // time to send data down to TCC 4114184Sgabeblack@google.com Cycles l2_hit_latency := 18; 4214184Sgabeblack@google.com 4314184Sgabeblack@google.com MessageBuffer * requestFromSQC, network="To", virtual_network="1", vnet_type="request"; 4414184Sgabeblack@google.com MessageBuffer * responseFromSQC, network="To", virtual_network="3", vnet_type="response"; 4514184Sgabeblack@google.com MessageBuffer * unblockFromCore, network="To", virtual_network="5", vnet_type="unblock"; 4614184Sgabeblack@google.com 4714184Sgabeblack@google.com MessageBuffer * probeToSQC, network="From", virtual_network="1", vnet_type="request"; 4814184Sgabeblack@google.com MessageBuffer * responseToSQC, network="From", virtual_network="3", vnet_type="response"; 4914184Sgabeblack@google.com 5014184Sgabeblack@google.com MessageBuffer * mandatoryQueue; 5114184Sgabeblack@google.com{ 5214184Sgabeblack@google.com state_declaration(State, desc="SQC Cache States", default="SQC_State_I") { 5314184Sgabeblack@google.com I, AccessPermission:Invalid, desc="Invalid"; 5414184Sgabeblack@google.com S, AccessPermission:Read_Only, desc="Shared"; 5514184Sgabeblack@google.com 5614184Sgabeblack@google.com I_S, AccessPermission:Busy, desc="Invalid, issued RdBlkS, have not seen response yet"; 5714184Sgabeblack@google.com S_I, AccessPermission:Read_Only, desc="L1 replacement, waiting for clean WB ack"; 5814184Sgabeblack@google.com I_C, AccessPermission:Invalid, desc="Invalid, waiting for WBAck from TCCdir for canceled WB"; 5914184Sgabeblack@google.com } 6014184Sgabeblack@google.com 6114184Sgabeblack@google.com enumeration(Event, desc="SQC Events") { 6214184Sgabeblack@google.com // Core initiated 6314184Sgabeblack@google.com Fetch, desc="Fetch"; 6414184Sgabeblack@google.com 6514184Sgabeblack@google.com //TCC initiated 6614184Sgabeblack@google.com TCC_AckS, desc="TCC Ack to Core Request"; 6714184Sgabeblack@google.com TCC_AckWB, desc="TCC Ack for WB"; 6814184Sgabeblack@google.com TCC_NackWB, desc="TCC Nack for WB"; 6914184Sgabeblack@google.com 7014184Sgabeblack@google.com // Mem sys initiated 7114184Sgabeblack@google.com Repl, desc="Replacing block from cache"; 7214184Sgabeblack@google.com 7314184Sgabeblack@google.com // Probe Events 7414184Sgabeblack@google.com PrbInvData, desc="probe, return M data"; 7514184Sgabeblack@google.com PrbInv, desc="probe, no need for data"; 7614184Sgabeblack@google.com PrbShrData, desc="probe downgrade, return data"; 7714184Sgabeblack@google.com } 7814184Sgabeblack@google.com 7914184Sgabeblack@google.com enumeration(RequestType, desc="To communicate stats from transitions to recordStats") { 8014184Sgabeblack@google.com DataArrayRead, desc="Read the data array"; 8114184Sgabeblack@google.com DataArrayWrite, desc="Write the data array"; 8214184Sgabeblack@google.com TagArrayRead, desc="Read the data array"; 8314184Sgabeblack@google.com TagArrayWrite, desc="Write the data array"; 8414184Sgabeblack@google.com } 8514184Sgabeblack@google.com 8614184Sgabeblack@google.com 8714184Sgabeblack@google.com structure(Entry, desc="...", interface="AbstractCacheEntry") { 8814184Sgabeblack@google.com State CacheState, desc="cache state"; 8914184Sgabeblack@google.com bool Dirty, desc="Is the data dirty (diff than memory)?"; 9014184Sgabeblack@google.com DataBlock DataBlk, desc="data for the block"; 9114184Sgabeblack@google.com bool FromL2, default="false", desc="block just moved from L2"; 9214184Sgabeblack@google.com } 9314184Sgabeblack@google.com 9414184Sgabeblack@google.com structure(TBE, desc="...") { 9514184Sgabeblack@google.com State TBEState, desc="Transient state"; 9614184Sgabeblack@google.com DataBlock DataBlk, desc="data for the block, required for concurrent writebacks"; 9714184Sgabeblack@google.com bool Dirty, desc="Is the data dirty (different than memory)?"; 9814184Sgabeblack@google.com int NumPendingMsgs, desc="Number of acks/data messages that this processor is waiting for"; 9914184Sgabeblack@google.com bool Shared, desc="Victim hit by shared probe"; 10014184Sgabeblack@google.com } 10114184Sgabeblack@google.com 10214184Sgabeblack@google.com structure(TBETable, external="yes") { 10314184Sgabeblack@google.com TBE lookup(Addr); 10414184Sgabeblack@google.com void allocate(Addr); 10514184Sgabeblack@google.com void deallocate(Addr); 10614184Sgabeblack@google.com bool isPresent(Addr); 10714184Sgabeblack@google.com } 10814184Sgabeblack@google.com 10914184Sgabeblack@google.com TBETable TBEs, template="<SQC_TBE>", constructor="m_number_of_TBEs"; 11014184Sgabeblack@google.com int TCC_select_low_bit, default="RubySystem::getBlockSizeBits()"; 11114184Sgabeblack@google.com 11214184Sgabeblack@google.com Tick clockEdge(); 11314184Sgabeblack@google.com Tick cyclesToTicks(Cycles c); 11414184Sgabeblack@google.com 11514184Sgabeblack@google.com void set_cache_entry(AbstractCacheEntry b); 11614184Sgabeblack@google.com void unset_cache_entry(); 11714184Sgabeblack@google.com void set_tbe(TBE b); 11814184Sgabeblack@google.com void unset_tbe(); 11914184Sgabeblack@google.com void wakeUpAllBuffers(); 12014184Sgabeblack@google.com void wakeUpBuffers(Addr a); 12114184Sgabeblack@google.com Cycles curCycle(); 12214184Sgabeblack@google.com 12314184Sgabeblack@google.com // Internal functions 12414184Sgabeblack@google.com Entry getCacheEntry(Addr address), return_by_pointer="yes" { 12514184Sgabeblack@google.com Entry cache_entry := static_cast(Entry, "pointer", L1cache.lookup(address)); 12614184Sgabeblack@google.com return cache_entry; 12714184Sgabeblack@google.com } 12814184Sgabeblack@google.com 12914184Sgabeblack@google.com DataBlock getDataBlock(Addr addr), return_by_ref="yes" { 13014184Sgabeblack@google.com TBE tbe := TBEs.lookup(addr); 13114184Sgabeblack@google.com if(is_valid(tbe)) { 13214184Sgabeblack@google.com return tbe.DataBlk; 13314184Sgabeblack@google.com } else { 13414184Sgabeblack@google.com return getCacheEntry(addr).DataBlk; 13514184Sgabeblack@google.com } 13614184Sgabeblack@google.com } 13714184Sgabeblack@google.com 13814184Sgabeblack@google.com State getState(TBE tbe, Entry cache_entry, Addr addr) { 13914184Sgabeblack@google.com if(is_valid(tbe)) { 14014184Sgabeblack@google.com return tbe.TBEState; 14114184Sgabeblack@google.com } else if (is_valid(cache_entry)) { 14214184Sgabeblack@google.com return cache_entry.CacheState; 14314184Sgabeblack@google.com } 14414184Sgabeblack@google.com return State:I; 14514184Sgabeblack@google.com } 14614184Sgabeblack@google.com 14714184Sgabeblack@google.com void setState(TBE tbe, Entry cache_entry, Addr addr, State state) { 14814184Sgabeblack@google.com if (is_valid(tbe)) { 14914184Sgabeblack@google.com tbe.TBEState := state; 15014184Sgabeblack@google.com } 15114184Sgabeblack@google.com 15214184Sgabeblack@google.com if (is_valid(cache_entry)) { 15314184Sgabeblack@google.com cache_entry.CacheState := state; 15414184Sgabeblack@google.com } 15514184Sgabeblack@google.com } 15614184Sgabeblack@google.com 15714184Sgabeblack@google.com AccessPermission getAccessPermission(Addr addr) { 15814184Sgabeblack@google.com TBE tbe := TBEs.lookup(addr); 15914184Sgabeblack@google.com if(is_valid(tbe)) { 16014184Sgabeblack@google.com return SQC_State_to_permission(tbe.TBEState); 16114184Sgabeblack@google.com } 16214184Sgabeblack@google.com 16314184Sgabeblack@google.com Entry cache_entry := getCacheEntry(addr); 16414184Sgabeblack@google.com if(is_valid(cache_entry)) { 16514184Sgabeblack@google.com return SQC_State_to_permission(cache_entry.CacheState); 16614184Sgabeblack@google.com } 16714184Sgabeblack@google.com 16814184Sgabeblack@google.com return AccessPermission:NotPresent; 16914184Sgabeblack@google.com } 17014184Sgabeblack@google.com 17114184Sgabeblack@google.com void setAccessPermission(Entry cache_entry, Addr addr, State state) { 17214184Sgabeblack@google.com if (is_valid(cache_entry)) { 17314184Sgabeblack@google.com cache_entry.changePermission(SQC_State_to_permission(state)); 17414184Sgabeblack@google.com } 17514184Sgabeblack@google.com } 17614184Sgabeblack@google.com 17714184Sgabeblack@google.com void functionalRead(Addr addr, Packet *pkt) { 17814184Sgabeblack@google.com TBE tbe := TBEs.lookup(addr); 17914184Sgabeblack@google.com if(is_valid(tbe)) { 18014184Sgabeblack@google.com testAndRead(addr, tbe.DataBlk, pkt); 18114184Sgabeblack@google.com } else { 18214184Sgabeblack@google.com functionalMemoryRead(pkt); 18314184Sgabeblack@google.com } 18414184Sgabeblack@google.com } 18514184Sgabeblack@google.com 18614184Sgabeblack@google.com int functionalWrite(Addr addr, Packet *pkt) { 18714184Sgabeblack@google.com int num_functional_writes := 0; 18814184Sgabeblack@google.com 18914184Sgabeblack@google.com TBE tbe := TBEs.lookup(addr); 19014184Sgabeblack@google.com if(is_valid(tbe)) { 19114184Sgabeblack@google.com num_functional_writes := num_functional_writes + 19214184Sgabeblack@google.com testAndWrite(addr, tbe.DataBlk, pkt); 19314184Sgabeblack@google.com } 19414184Sgabeblack@google.com 19514184Sgabeblack@google.com num_functional_writes := num_functional_writes + functionalMemoryWrite(pkt); 19614184Sgabeblack@google.com return num_functional_writes; 19714184Sgabeblack@google.com } 19814184Sgabeblack@google.com 19914184Sgabeblack@google.com void recordRequestType(RequestType request_type, Addr addr) { 20014184Sgabeblack@google.com if (request_type == RequestType:DataArrayRead) { 20114184Sgabeblack@google.com L1cache.recordRequestType(CacheRequestType:DataArrayRead, addr); 20214184Sgabeblack@google.com } else if (request_type == RequestType:DataArrayWrite) { 20314184Sgabeblack@google.com L1cache.recordRequestType(CacheRequestType:DataArrayWrite, addr); 20414184Sgabeblack@google.com } else if (request_type == RequestType:TagArrayRead) { 20514184Sgabeblack@google.com L1cache.recordRequestType(CacheRequestType:TagArrayRead, addr); 20614184Sgabeblack@google.com } else if (request_type == RequestType:TagArrayWrite) { 20714184Sgabeblack@google.com L1cache.recordRequestType(CacheRequestType:TagArrayWrite, addr); 20814184Sgabeblack@google.com } 20914184Sgabeblack@google.com } 21014184Sgabeblack@google.com 21114184Sgabeblack@google.com bool checkResourceAvailable(RequestType request_type, Addr addr) { 21214184Sgabeblack@google.com if (request_type == RequestType:DataArrayRead) { 21314184Sgabeblack@google.com return L1cache.checkResourceAvailable(CacheResourceType:DataArray, addr); 21414184Sgabeblack@google.com } else if (request_type == RequestType:DataArrayWrite) { 21514184Sgabeblack@google.com return L1cache.checkResourceAvailable(CacheResourceType:DataArray, addr); 21614184Sgabeblack@google.com } else if (request_type == RequestType:TagArrayRead) { 21714184Sgabeblack@google.com return L1cache.checkResourceAvailable(CacheResourceType:TagArray, addr); 21814184Sgabeblack@google.com } else if (request_type == RequestType:TagArrayWrite) { 21914184Sgabeblack@google.com return L1cache.checkResourceAvailable(CacheResourceType:TagArray, addr); 22014184Sgabeblack@google.com } else { 22114184Sgabeblack@google.com error("Invalid RequestType type in checkResourceAvailable"); 22214184Sgabeblack@google.com return true; 22314184Sgabeblack@google.com } 22414184Sgabeblack@google.com } 22514184Sgabeblack@google.com 22614184Sgabeblack@google.com // Out Ports 22714184Sgabeblack@google.com 22814184Sgabeblack@google.com out_port(requestNetwork_out, CPURequestMsg, requestFromSQC); 22914184Sgabeblack@google.com out_port(responseNetwork_out, ResponseMsg, responseFromSQC); 23014184Sgabeblack@google.com out_port(unblockNetwork_out, UnblockMsg, unblockFromCore); 23114184Sgabeblack@google.com 23214184Sgabeblack@google.com // In Ports 23314184Sgabeblack@google.com 23414184Sgabeblack@google.com in_port(probeNetwork_in, TDProbeRequestMsg, probeToSQC) { 23514184Sgabeblack@google.com if (probeNetwork_in.isReady(clockEdge())) { 23614184Sgabeblack@google.com peek(probeNetwork_in, TDProbeRequestMsg, block_on="addr") { 23714184Sgabeblack@google.com Entry cache_entry := getCacheEntry(in_msg.addr); 23814184Sgabeblack@google.com TBE tbe := TBEs.lookup(in_msg.addr); 23914184Sgabeblack@google.com 24014184Sgabeblack@google.com if (in_msg.Type == ProbeRequestType:PrbInv) { 24114184Sgabeblack@google.com if (in_msg.ReturnData) { 24214184Sgabeblack@google.com trigger(Event:PrbInvData, in_msg.addr, cache_entry, tbe); 24314184Sgabeblack@google.com } else { 24414184Sgabeblack@google.com trigger(Event:PrbInv, in_msg.addr, cache_entry, tbe); 24514184Sgabeblack@google.com } 24614184Sgabeblack@google.com } else if (in_msg.Type == ProbeRequestType:PrbDowngrade) { 24714184Sgabeblack@google.com assert(in_msg.ReturnData); 24814184Sgabeblack@google.com trigger(Event:PrbShrData, in_msg.addr, cache_entry, tbe); 24914184Sgabeblack@google.com } 25014184Sgabeblack@google.com } 25114184Sgabeblack@google.com } 25214184Sgabeblack@google.com } 25314184Sgabeblack@google.com 25414184Sgabeblack@google.com in_port(responseToSQC_in, ResponseMsg, responseToSQC) { 25514184Sgabeblack@google.com if (responseToSQC_in.isReady(clockEdge())) { 25614184Sgabeblack@google.com peek(responseToSQC_in, ResponseMsg, block_on="addr") { 25714184Sgabeblack@google.com 25814184Sgabeblack@google.com Entry cache_entry := getCacheEntry(in_msg.addr); 25914184Sgabeblack@google.com TBE tbe := TBEs.lookup(in_msg.addr); 26014184Sgabeblack@google.com 26114184Sgabeblack@google.com if (in_msg.Type == CoherenceResponseType:TDSysResp) { 26214184Sgabeblack@google.com if (in_msg.State == CoherenceState:Shared) { 26314184Sgabeblack@google.com trigger(Event:TCC_AckS, in_msg.addr, cache_entry, tbe); 26414184Sgabeblack@google.com } else { 26514184Sgabeblack@google.com error("SQC should not receive TDSysResp other than CoherenceState:Shared"); 26614184Sgabeblack@google.com } 26714184Sgabeblack@google.com } else if (in_msg.Type == CoherenceResponseType:TDSysWBAck) { 26814184Sgabeblack@google.com trigger(Event:TCC_AckWB, in_msg.addr, cache_entry, tbe); 26914184Sgabeblack@google.com } else if (in_msg.Type == CoherenceResponseType:TDSysWBNack) { 27014184Sgabeblack@google.com trigger(Event:TCC_NackWB, in_msg.addr, cache_entry, tbe); 27114184Sgabeblack@google.com } else { 27214184Sgabeblack@google.com error("Unexpected Response Message to Core"); 27314184Sgabeblack@google.com } 27414184Sgabeblack@google.com } 27514184Sgabeblack@google.com } 27614184Sgabeblack@google.com } 27714184Sgabeblack@google.com 27814184Sgabeblack@google.com in_port(mandatoryQueue_in, RubyRequest, mandatoryQueue, desc="...") { 27914184Sgabeblack@google.com if (mandatoryQueue_in.isReady(clockEdge())) { 28014184Sgabeblack@google.com peek(mandatoryQueue_in, RubyRequest, block_on="LineAddress") { 28114184Sgabeblack@google.com Entry cache_entry := getCacheEntry(in_msg.LineAddress); 28214184Sgabeblack@google.com TBE tbe := TBEs.lookup(in_msg.LineAddress); 28314184Sgabeblack@google.com 28414184Sgabeblack@google.com assert(in_msg.Type == RubyRequestType:IFETCH); 28514184Sgabeblack@google.com if (is_valid(cache_entry) || L1cache.cacheAvail(in_msg.LineAddress)) { 28614184Sgabeblack@google.com trigger(Event:Fetch, in_msg.LineAddress, cache_entry, tbe); 28714184Sgabeblack@google.com } else { 28814184Sgabeblack@google.com Addr victim := L1cache.cacheProbe(in_msg.LineAddress); 28914184Sgabeblack@google.com trigger(Event:Repl, victim, getCacheEntry(victim), TBEs.lookup(victim)); 29014184Sgabeblack@google.com } 29114184Sgabeblack@google.com } 29214184Sgabeblack@google.com } 29314184Sgabeblack@google.com } 29414184Sgabeblack@google.com 29514184Sgabeblack@google.com // Actions 29614184Sgabeblack@google.com 29714184Sgabeblack@google.com action(ic_invCache, "ic", desc="invalidate cache") { 29814184Sgabeblack@google.com if(is_valid(cache_entry)) { 29914184Sgabeblack@google.com L1cache.deallocate(address); 30014184Sgabeblack@google.com } 30114184Sgabeblack@google.com unset_cache_entry(); 30214184Sgabeblack@google.com } 30314184Sgabeblack@google.com 30414184Sgabeblack@google.com action(nS_issueRdBlkS, "nS", desc="Issue RdBlkS") { 30514184Sgabeblack@google.com enqueue(requestNetwork_out, CPURequestMsg, issue_latency) { 30614184Sgabeblack@google.com out_msg.addr := address; 30714184Sgabeblack@google.com out_msg.Type := CoherenceRequestType:RdBlkS; 30814184Sgabeblack@google.com out_msg.Requestor := machineID; 30914184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCCdir, 31014184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 31114184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Request_Control; 31214184Sgabeblack@google.com out_msg.InitialRequestTime := curCycle(); 31314184Sgabeblack@google.com } 31414184Sgabeblack@google.com } 31514184Sgabeblack@google.com 31614184Sgabeblack@google.com action(vc_victim, "vc", desc="Victimize E/S Data") { 31714184Sgabeblack@google.com enqueue(requestNetwork_out, CPURequestMsg, issue_latency) { 31814184Sgabeblack@google.com out_msg.addr := address; 31914184Sgabeblack@google.com out_msg.Requestor := machineID; 32014184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCCdir, 32114184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 32214184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Request_Control; 32314184Sgabeblack@google.com out_msg.Type := CoherenceRequestType:VicClean; 32414184Sgabeblack@google.com out_msg.InitialRequestTime := curCycle(); 32514184Sgabeblack@google.com if (cache_entry.CacheState == State:S) { 32614184Sgabeblack@google.com out_msg.Shared := true; 32714184Sgabeblack@google.com } else { 32814184Sgabeblack@google.com out_msg.Shared := false; 32914184Sgabeblack@google.com } 33014184Sgabeblack@google.com out_msg.InitialRequestTime := curCycle(); 33114184Sgabeblack@google.com } 33214184Sgabeblack@google.com } 33314184Sgabeblack@google.com 33414184Sgabeblack@google.com action(a_allocate, "a", desc="allocate block") { 33514184Sgabeblack@google.com if (is_invalid(cache_entry)) { 33614184Sgabeblack@google.com set_cache_entry(L1cache.allocate(address, new Entry)); 33714184Sgabeblack@google.com } 33814184Sgabeblack@google.com } 33914184Sgabeblack@google.com 34014184Sgabeblack@google.com action(t_allocateTBE, "t", desc="allocate TBE Entry") { 34114184Sgabeblack@google.com check_allocate(TBEs); 34214184Sgabeblack@google.com assert(is_valid(cache_entry)); 34314184Sgabeblack@google.com TBEs.allocate(address); 34414184Sgabeblack@google.com set_tbe(TBEs.lookup(address)); 34514184Sgabeblack@google.com tbe.DataBlk := cache_entry.DataBlk; // Data only used for WBs 34614184Sgabeblack@google.com tbe.Dirty := cache_entry.Dirty; 34714184Sgabeblack@google.com tbe.Shared := false; 34814184Sgabeblack@google.com } 34914184Sgabeblack@google.com 35014184Sgabeblack@google.com action(d_deallocateTBE, "d", desc="Deallocate TBE") { 35114184Sgabeblack@google.com TBEs.deallocate(address); 35214184Sgabeblack@google.com unset_tbe(); 35314184Sgabeblack@google.com } 35414184Sgabeblack@google.com 35514184Sgabeblack@google.com action(p_popMandatoryQueue, "pm", desc="Pop Mandatory Queue") { 35614184Sgabeblack@google.com mandatoryQueue_in.dequeue(clockEdge()); 35714184Sgabeblack@google.com } 35814184Sgabeblack@google.com 35914184Sgabeblack@google.com action(pr_popResponseQueue, "pr", desc="Pop Response Queue") { 36014184Sgabeblack@google.com responseToSQC_in.dequeue(clockEdge()); 36114184Sgabeblack@google.com } 36214184Sgabeblack@google.com 36314184Sgabeblack@google.com action(pp_popProbeQueue, "pp", desc="pop probe queue") { 36414184Sgabeblack@google.com probeNetwork_in.dequeue(clockEdge()); 36514184Sgabeblack@google.com } 36614184Sgabeblack@google.com 36714184Sgabeblack@google.com action(l_loadDone, "l", desc="local load done") { 36814184Sgabeblack@google.com assert(is_valid(cache_entry)); 36914184Sgabeblack@google.com sequencer.readCallback(address, cache_entry.DataBlk, 37014184Sgabeblack@google.com false, MachineType:L1Cache); 37114184Sgabeblack@google.com APPEND_TRANSITION_COMMENT(cache_entry.DataBlk); 37214184Sgabeblack@google.com } 37314184Sgabeblack@google.com 37414184Sgabeblack@google.com action(xl_loadDone, "xl", desc="remote load done") { 37514184Sgabeblack@google.com peek(responseToSQC_in, ResponseMsg) { 37614184Sgabeblack@google.com assert(is_valid(cache_entry)); 37714184Sgabeblack@google.com sequencer.readCallback(address, 37814184Sgabeblack@google.com cache_entry.DataBlk, 37914184Sgabeblack@google.com false, 38014184Sgabeblack@google.com machineIDToMachineType(in_msg.Sender), 38114184Sgabeblack@google.com in_msg.InitialRequestTime, 38214184Sgabeblack@google.com in_msg.ForwardRequestTime, 38314184Sgabeblack@google.com in_msg.ProbeRequestStartTime); 38414184Sgabeblack@google.com APPEND_TRANSITION_COMMENT(cache_entry.DataBlk); 38514184Sgabeblack@google.com } 38614184Sgabeblack@google.com } 38714184Sgabeblack@google.com 38814184Sgabeblack@google.com action(w_writeCache, "w", desc="write data to cache") { 38914184Sgabeblack@google.com peek(responseToSQC_in, ResponseMsg) { 39014184Sgabeblack@google.com assert(is_valid(cache_entry)); 39114184Sgabeblack@google.com cache_entry.DataBlk := in_msg.DataBlk; 39214184Sgabeblack@google.com cache_entry.Dirty := in_msg.Dirty; 39314184Sgabeblack@google.com } 39414184Sgabeblack@google.com } 39514184Sgabeblack@google.com 39614184Sgabeblack@google.com action(ss_sendStaleNotification, "ss", desc="stale data; nothing to writeback") { 39714184Sgabeblack@google.com peek(responseToSQC_in, ResponseMsg) { 39814184Sgabeblack@google.com enqueue(responseNetwork_out, ResponseMsg, issue_latency) { 39914184Sgabeblack@google.com out_msg.addr := address; 40014184Sgabeblack@google.com out_msg.Type := CoherenceResponseType:StaleNotif; 40114184Sgabeblack@google.com out_msg.Sender := machineID; 40214184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCC, 40314184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 40414184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Response_Control; 40514184Sgabeblack@google.com DPRINTF(RubySlicc, "%s\n", out_msg); 40614184Sgabeblack@google.com } 40714184Sgabeblack@google.com } 40814184Sgabeblack@google.com } 40914184Sgabeblack@google.com 41014184Sgabeblack@google.com action(wb_data, "wb", desc="write back data") { 41114184Sgabeblack@google.com peek(responseToSQC_in, ResponseMsg) { 41214184Sgabeblack@google.com enqueue(responseNetwork_out, ResponseMsg, issue_latency) { 41314184Sgabeblack@google.com out_msg.addr := address; 41414184Sgabeblack@google.com out_msg.Type := CoherenceResponseType:CPUData; 41514184Sgabeblack@google.com out_msg.Sender := machineID; 41614184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCC, 41714184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 41814184Sgabeblack@google.com out_msg.DataBlk := tbe.DataBlk; 41914184Sgabeblack@google.com out_msg.Dirty := tbe.Dirty; 42014184Sgabeblack@google.com if (tbe.Shared) { 42114184Sgabeblack@google.com out_msg.NbReqShared := true; 42214184Sgabeblack@google.com } else { 42314184Sgabeblack@google.com out_msg.NbReqShared := false; 42414184Sgabeblack@google.com } 42514184Sgabeblack@google.com out_msg.State := CoherenceState:Shared; // faux info 42614184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Writeback_Data; 42714184Sgabeblack@google.com DPRINTF(RubySlicc, "%s\n", out_msg); 42814184Sgabeblack@google.com } 42914184Sgabeblack@google.com } 43014184Sgabeblack@google.com } 43114184Sgabeblack@google.com 43214184Sgabeblack@google.com action(pi_sendProbeResponseInv, "pi", desc="send probe ack inv, no data") { 43314184Sgabeblack@google.com enqueue(responseNetwork_out, ResponseMsg, issue_latency) { 43414184Sgabeblack@google.com out_msg.addr := address; 43514184Sgabeblack@google.com out_msg.Type := CoherenceResponseType:CPUPrbResp; // L3 and CPUs respond in same way to probes 43614184Sgabeblack@google.com out_msg.Sender := machineID; 43714184Sgabeblack@google.com // will this always be ok? probably not for multisocket 43814184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCCdir, 43914184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 44014184Sgabeblack@google.com out_msg.Dirty := false; 44114184Sgabeblack@google.com out_msg.Hit := false; 44214184Sgabeblack@google.com out_msg.Ntsl := true; 44314184Sgabeblack@google.com out_msg.State := CoherenceState:NA; 44414184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Response_Control; 44514184Sgabeblack@google.com } 44614184Sgabeblack@google.com } 44714184Sgabeblack@google.com 44814184Sgabeblack@google.com action(pim_sendProbeResponseInvMs, "pim", desc="send probe ack inv, no data") { 44914184Sgabeblack@google.com enqueue(responseNetwork_out, ResponseMsg, issue_latency) { 45014184Sgabeblack@google.com out_msg.addr := address; 45114184Sgabeblack@google.com out_msg.Type := CoherenceResponseType:CPUPrbResp; // L3 and CPUs respond in same way to probes 45214184Sgabeblack@google.com out_msg.Sender := machineID; 45314184Sgabeblack@google.com // will this always be ok? probably not for multisocket 45414184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCCdir, 45514184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 45614184Sgabeblack@google.com out_msg.Dirty := false; 45714184Sgabeblack@google.com out_msg.Ntsl := true; 45814184Sgabeblack@google.com out_msg.Hit := false; 45914184Sgabeblack@google.com out_msg.State := CoherenceState:NA; 46014184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Response_Control; 46114184Sgabeblack@google.com } 46214184Sgabeblack@google.com } 46314184Sgabeblack@google.com 46414184Sgabeblack@google.com action(prm_sendProbeResponseMiss, "prm", desc="send probe ack PrbShrData, no data") { 46514184Sgabeblack@google.com enqueue(responseNetwork_out, ResponseMsg, issue_latency) { 46614184Sgabeblack@google.com out_msg.addr := address; 46714184Sgabeblack@google.com out_msg.Type := CoherenceResponseType:CPUPrbResp; // L3 and CPUs respond in same way to probes 46814184Sgabeblack@google.com out_msg.Sender := machineID; 46914184Sgabeblack@google.com // will this always be ok? probably not for multisocket 47014184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCCdir, 47114184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 47214184Sgabeblack@google.com out_msg.Dirty := false; // only true if sending back data i think 47314184Sgabeblack@google.com out_msg.Hit := false; 47414184Sgabeblack@google.com out_msg.Ntsl := false; 47514184Sgabeblack@google.com out_msg.State := CoherenceState:NA; 47614184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Response_Control; 47714184Sgabeblack@google.com } 47814184Sgabeblack@google.com } 47914184Sgabeblack@google.com 48014184Sgabeblack@google.com action(pd_sendProbeResponseData, "pd", desc="send probe ack, with data") { 48114184Sgabeblack@google.com enqueue(responseNetwork_out, ResponseMsg, issue_latency) { 48214184Sgabeblack@google.com assert(is_valid(cache_entry) || is_valid(tbe)); 48314184Sgabeblack@google.com out_msg.addr := address; 48414184Sgabeblack@google.com out_msg.Type := CoherenceResponseType:CPUPrbResp; 48514184Sgabeblack@google.com out_msg.Sender := machineID; 48614184Sgabeblack@google.com // will this always be ok? probably not for multisocket 48714184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCCdir, 48814184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 48914184Sgabeblack@google.com out_msg.DataBlk := getDataBlock(address); 49014184Sgabeblack@google.com if (is_valid(tbe)) { 49114184Sgabeblack@google.com out_msg.Dirty := tbe.Dirty; 49214184Sgabeblack@google.com } else { 49314184Sgabeblack@google.com out_msg.Dirty := cache_entry.Dirty; 49414184Sgabeblack@google.com } 49514184Sgabeblack@google.com out_msg.Hit := true; 49614184Sgabeblack@google.com out_msg.State := CoherenceState:NA; 49714184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Response_Data; 49814184Sgabeblack@google.com } 49914184Sgabeblack@google.com } 50014184Sgabeblack@google.com 50114184Sgabeblack@google.com action(pdm_sendProbeResponseDataMs, "pdm", desc="send probe ack, with data") { 50214184Sgabeblack@google.com enqueue(responseNetwork_out, ResponseMsg, issue_latency) { 50314184Sgabeblack@google.com assert(is_valid(cache_entry) || is_valid(tbe)); 50414184Sgabeblack@google.com assert(is_valid(cache_entry)); 50514184Sgabeblack@google.com out_msg.addr := address; 50614184Sgabeblack@google.com out_msg.Type := CoherenceResponseType:CPUPrbResp; 50714184Sgabeblack@google.com out_msg.Sender := machineID; 50814184Sgabeblack@google.com // will this always be ok? probably not for multisocket 50914184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCCdir, 51014184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 51114184Sgabeblack@google.com out_msg.DataBlk := getDataBlock(address); 51214184Sgabeblack@google.com if (is_valid(tbe)) { 51314184Sgabeblack@google.com out_msg.Dirty := tbe.Dirty; 51414184Sgabeblack@google.com } else { 51514184Sgabeblack@google.com out_msg.Dirty := cache_entry.Dirty; 51614184Sgabeblack@google.com } 51714184Sgabeblack@google.com out_msg.Hit := true; 51814184Sgabeblack@google.com out_msg.State := CoherenceState:NA; 51914184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Response_Data; 52014184Sgabeblack@google.com } 52114184Sgabeblack@google.com } 52214184Sgabeblack@google.com 52314184Sgabeblack@google.com action(sf_setSharedFlip, "sf", desc="hit by shared probe, status may be different") { 52414184Sgabeblack@google.com assert(is_valid(tbe)); 52514184Sgabeblack@google.com tbe.Shared := true; 52614184Sgabeblack@google.com } 52714184Sgabeblack@google.com 52814184Sgabeblack@google.com action(uu_sendUnblock, "uu", desc="state changed, unblock") { 52914184Sgabeblack@google.com enqueue(unblockNetwork_out, UnblockMsg, issue_latency) { 53014184Sgabeblack@google.com out_msg.addr := address; 53114184Sgabeblack@google.com out_msg.Sender := machineID; 53214184Sgabeblack@google.com out_msg.Destination.add(mapAddressToRange(address,MachineType:TCCdir, 53314184Sgabeblack@google.com TCC_select_low_bit, TCC_select_num_bits)); 53414184Sgabeblack@google.com out_msg.MessageSize := MessageSizeType:Unblock_Control; 53514184Sgabeblack@google.com DPRINTF(RubySlicc, "%s\n", out_msg); 53614184Sgabeblack@google.com } 53714184Sgabeblack@google.com } 53814184Sgabeblack@google.com 53914184Sgabeblack@google.com action(yy_recycleProbeQueue, "yy", desc="recycle probe queue") { 54014184Sgabeblack@google.com probeNetwork_in.recycle(clockEdge(), cyclesToTicks(recycle_latency)); 54114184Sgabeblack@google.com } 54214184Sgabeblack@google.com 54314184Sgabeblack@google.com action(zz_recycleMandatoryQueue, "\z", desc="recycle mandatory queue") { 54414184Sgabeblack@google.com mandatoryQueue_in.recycle(clockEdge(), cyclesToTicks(recycle_latency)); 54514184Sgabeblack@google.com } 54614184Sgabeblack@google.com 54714184Sgabeblack@google.com // Transitions 54814184Sgabeblack@google.com 54914184Sgabeblack@google.com // transitions from base 55014184Sgabeblack@google.com transition(I, Fetch, I_S) {TagArrayRead, TagArrayWrite} { 55114184Sgabeblack@google.com a_allocate; 55214184Sgabeblack@google.com nS_issueRdBlkS; 55314184Sgabeblack@google.com p_popMandatoryQueue; 55414184Sgabeblack@google.com } 55514184Sgabeblack@google.com 55614184Sgabeblack@google.com // simple hit transitions 55714184Sgabeblack@google.com transition(S, Fetch) {TagArrayRead, DataArrayRead} { 55814184Sgabeblack@google.com l_loadDone; 55914184Sgabeblack@google.com p_popMandatoryQueue; 56014184Sgabeblack@google.com } 56114184Sgabeblack@google.com 56214184Sgabeblack@google.com // recycles from transients 56314184Sgabeblack@google.com transition({I_S, S_I, I_C}, {Fetch, Repl}) {} { 56414184Sgabeblack@google.com zz_recycleMandatoryQueue; 56514184Sgabeblack@google.com } 56614184Sgabeblack@google.com 56714184Sgabeblack@google.com transition(S, Repl, S_I) {TagArrayRead} { 56814184Sgabeblack@google.com t_allocateTBE; 56914184Sgabeblack@google.com vc_victim; 57014184Sgabeblack@google.com ic_invCache; 57114184Sgabeblack@google.com } 57214184Sgabeblack@google.com 57314184Sgabeblack@google.com // TCC event 57414184Sgabeblack@google.com transition(I_S, TCC_AckS, S) {DataArrayRead, DataArrayWrite} { 57514184Sgabeblack@google.com w_writeCache; 57614184Sgabeblack@google.com xl_loadDone; 57714184Sgabeblack@google.com uu_sendUnblock; 57814184Sgabeblack@google.com pr_popResponseQueue; 57914184Sgabeblack@google.com } 58014184Sgabeblack@google.com 58114184Sgabeblack@google.com transition(S_I, TCC_NackWB, I){TagArrayWrite} { 58214184Sgabeblack@google.com d_deallocateTBE; 58314184Sgabeblack@google.com pr_popResponseQueue; 58414184Sgabeblack@google.com } 58514184Sgabeblack@google.com 58614184Sgabeblack@google.com transition(S_I, TCC_AckWB, I) {TagArrayWrite} { 58714184Sgabeblack@google.com wb_data; 58814184Sgabeblack@google.com d_deallocateTBE; 58914184Sgabeblack@google.com pr_popResponseQueue; 59014184Sgabeblack@google.com } 59114184Sgabeblack@google.com 59214184Sgabeblack@google.com transition(I_C, TCC_AckWB, I){TagArrayWrite} { 59314184Sgabeblack@google.com ss_sendStaleNotification; 59414184Sgabeblack@google.com d_deallocateTBE; 59514184Sgabeblack@google.com pr_popResponseQueue; 59614184Sgabeblack@google.com } 59714184Sgabeblack@google.com 59814184Sgabeblack@google.com transition(I_C, TCC_NackWB, I) {TagArrayWrite} { 59914184Sgabeblack@google.com d_deallocateTBE; 60014184Sgabeblack@google.com pr_popResponseQueue; 60114184Sgabeblack@google.com } 60214184Sgabeblack@google.com 60314184Sgabeblack@google.com // Probe transitions 60414184Sgabeblack@google.com transition({S, I}, PrbInvData, I) {TagArrayRead, TagArrayWrite} { 60514184Sgabeblack@google.com pd_sendProbeResponseData; 60614184Sgabeblack@google.com ic_invCache; 60714184Sgabeblack@google.com pp_popProbeQueue; 60814184Sgabeblack@google.com } 60914184Sgabeblack@google.com 61014184Sgabeblack@google.com transition(I_C, PrbInvData, I_C) { 61114184Sgabeblack@google.com pi_sendProbeResponseInv; 61214184Sgabeblack@google.com ic_invCache; 61314184Sgabeblack@google.com pp_popProbeQueue; 61414184Sgabeblack@google.com } 61514184Sgabeblack@google.com 61614184Sgabeblack@google.com transition({S, I}, PrbInv, I) {TagArrayRead, TagArrayWrite} { 61714184Sgabeblack@google.com pi_sendProbeResponseInv; 61814184Sgabeblack@google.com ic_invCache; 61914184Sgabeblack@google.com pp_popProbeQueue; 62014184Sgabeblack@google.com } 62114184Sgabeblack@google.com 62214184Sgabeblack@google.com transition({S}, PrbShrData, S) {DataArrayRead} { 62314184Sgabeblack@google.com pd_sendProbeResponseData; 62414184Sgabeblack@google.com pp_popProbeQueue; 62514184Sgabeblack@google.com } 62614184Sgabeblack@google.com 62714184Sgabeblack@google.com transition({I, I_C}, PrbShrData) {TagArrayRead} { 62814184Sgabeblack@google.com prm_sendProbeResponseMiss; 62914184Sgabeblack@google.com pp_popProbeQueue; 63014184Sgabeblack@google.com } 63114184Sgabeblack@google.com 63214184Sgabeblack@google.com transition(I_C, PrbInv, I_C){ 63314184Sgabeblack@google.com pi_sendProbeResponseInv; 63414184Sgabeblack@google.com ic_invCache; 63514184Sgabeblack@google.com pp_popProbeQueue; 63614184Sgabeblack@google.com } 63714184Sgabeblack@google.com 63814184Sgabeblack@google.com transition(I_S, {PrbInv, PrbInvData}) {} { 63914184Sgabeblack@google.com pi_sendProbeResponseInv; 64014184Sgabeblack@google.com ic_invCache; 64114184Sgabeblack@google.com a_allocate; // but make sure there is room for incoming data when it arrives 64214184Sgabeblack@google.com pp_popProbeQueue; 64314184Sgabeblack@google.com } 64414184Sgabeblack@google.com 64514184Sgabeblack@google.com transition(I_S, PrbShrData) {} { 64614184Sgabeblack@google.com prm_sendProbeResponseMiss; 64714184Sgabeblack@google.com pp_popProbeQueue; 64814184Sgabeblack@google.com } 64914184Sgabeblack@google.com 65014184Sgabeblack@google.com transition(S_I, PrbInvData, I_C) {TagArrayWrite} { 65114184Sgabeblack@google.com pi_sendProbeResponseInv; 65214184Sgabeblack@google.com ic_invCache; 65314184Sgabeblack@google.com pp_popProbeQueue; 65414184Sgabeblack@google.com } 65514184Sgabeblack@google.com 65614184Sgabeblack@google.com transition(S_I, PrbInv, I_C) {TagArrayWrite} { 65714184Sgabeblack@google.com pi_sendProbeResponseInv; 65814184Sgabeblack@google.com ic_invCache; 65914184Sgabeblack@google.com pp_popProbeQueue; 66014184Sgabeblack@google.com } 66114184Sgabeblack@google.com 66214184Sgabeblack@google.com transition(S_I, PrbShrData) {DataArrayRead} { 66314184Sgabeblack@google.com pd_sendProbeResponseData; 66414184Sgabeblack@google.com sf_setSharedFlip; 66514184Sgabeblack@google.com pp_popProbeQueue; 66614184Sgabeblack@google.com } 66714184Sgabeblack@google.com} 668