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Diffstat (limited to 'src/mem/protocol/MOSI_SMP_directory_1level-cache.sm')
| -rw-r--r-- | src/mem/protocol/MOSI_SMP_directory_1level-cache.sm | 838 |
1 files changed, 0 insertions, 838 deletions
diff --git a/src/mem/protocol/MOSI_SMP_directory_1level-cache.sm b/src/mem/protocol/MOSI_SMP_directory_1level-cache.sm deleted file mode 100644 index f780bb473..000000000 --- a/src/mem/protocol/MOSI_SMP_directory_1level-cache.sm +++ /dev/null @@ -1,838 +0,0 @@ - -/* - * Copyright (c) 1999-2005 Mark D. Hill and David A. Wood - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * $Id: MOSI_directory_1level-cache.sm 1.18 04/09/07 13:52:52-05:00 mikem@maya.cs.wisc.edu $ - * - */ - -machine(L1Cache, "MOSI Directory Optimized") { - - MessageBuffer requestFromCache, network="To", virtual_network="0", ordered="false"; - MessageBuffer responseFromCache, network="To", virtual_network="2", ordered="false"; - - MessageBuffer forwardedRequestToCache, network="From", virtual_network="1", ordered="true"; - MessageBuffer responseToCache, network="From", virtual_network="2", ordered="false"; - - // STATES - enumeration(State, desc="Cache states", default="L1Cache_State_I") { - // Base states - I, desc="Idle"; - S, desc="Shared"; - O, desc="Owned"; - M, desc="Modified", format="!b"; - - // Transient States - MI, desc="modified, issued PUTX, have not seen response yet"; - OI, desc="owned, issued PUTX, have not seen response yet"; - - IS, desc="idle, issued GETS, have not seen response yet"; - ISI, desc="idle, issued GETS, saw INV, have not seen data for GETS yet", format="!b"; - - IM, desc="idle, issued GETX, have not seen response yet"; - IMI, desc="idle, issued GETX, saw forwarded GETX"; - IMO, desc="idle, issued GETX, saw forwarded GETS"; - IMOI, desc="idle, issued GETX, saw forwarded GETS, saw forwarded GETX"; - - // Note: OM is a strange state, because it is waiting for the line - // to be stolen away, or look like it has been stolen away. The - // common case is that we see a forward from the directory that is - // really from us, we forwarded the data to our dataqueue, and - // everythings works fine. - - OM, desc="owned, issued GETX, have not seen response yet"; - } - - // EVENTS - enumeration(Event, desc="Cache events") { - Load, desc="Load request from the processor"; - Load_prefetch, desc="Load prefetch request from the processor"; - Ifetch, desc="I-fetch request from the processor"; - Store_prefetch, desc="Store prefetch request from the processor"; - Store, desc="Store request from the processor"; - Replacement, desc="Replacement", format="!r"; - - Forwarded_GETS, "Forwarded GETS", desc="Directory forwards GETS to us"; - Forwarded_GETX, "Forwarded GETX", desc="Directory forwards GETX to us"; - INV, "INV", desc="Invalidation", format="!r"; - - Proc_ack, "Proc ack", desc="Ack from proc"; - Proc_last_ack, "Proc last ack", desc="Last ack", format="!r"; - - Data_ack_0, "Data ack 0", desc="Data with ack count = 0"; - Data_ack_not_0, "Data ack not 0", desc="Data with ack count != 0 (but haven't seen all acks first"; - Data_ack_not_0_last, "Data ack not 0 last", desc="Data with ack count != 0 after having received all acks"; - - Dir_WB_ack, "WB ack", desc="Writeback ack from dir"; - } - - // TYPES - - // CacheEntry - structure(Entry, desc="...", interface="AbstractCacheEntry") { - State CacheState, desc="cache state"; - DataBlock DataBlk, desc="data for the block"; - } - - // TBE fields - structure(TBE, desc="...") { - Address Address, desc="Physical address for this TBE"; - State TBEState, desc="Transient state"; - DataBlock DataBlk, desc="Buffer for the data block"; - int NumPendingAcks, desc="Number of acks that this processor is waiting for"; - NetDest ForwardGetS_IDs, desc="Set of the processors to forward the block"; - MachineID ForwardGetX_ID, desc="ID of the processor to forward the block"; - int ForwardGetX_AckCount, desc="Number of acks the GetX we are forwarded needs"; - bool isPrefetch, desc="Set if this was caused by a prefetch"; - } - - external_type(CacheMemory) { - bool cacheAvail(Address); - Address cacheProbe(Address); - void allocate(Address); - void deallocate(Address); - Entry lookup(Address); - void changePermission(Address, AccessPermission); - bool isTagPresent(Address); - } - - external_type(TBETable) { - TBE lookup(Address); - void allocate(Address); - void deallocate(Address); - bool isPresent(Address); - } - - MessageBuffer mandatoryQueue, ordered="false", abstract_chip_ptr="true"; - MessageBuffer optionalQueue, ordered="false", abstract_chip_ptr="true"; - Sequencer sequencer, abstract_chip_ptr="true", constructor_hack="i"; - StoreBuffer storeBuffer, abstract_chip_ptr="true", constructor_hack="i"; - - TBETable TBEs, template_hack="<L1Cache_TBE>"; - CacheMemory cacheMemory, template_hack="<L1Cache_Entry>", constructor_hack='L1_CACHE_NUM_SETS_BITS,L1_CACHE_ASSOC,MachineType_L1Cache,int_to_string(i)+"_unified L1"', abstract_chip_ptr="true"; - - State getState(Address addr) { - if(TBEs.isPresent(addr)) { - return TBEs[addr].TBEState; - } else if (cacheMemory.isTagPresent(addr)) { - return cacheMemory[addr].CacheState; - } - return State:I; - } - - void setState(Address addr, State state) { - if (TBEs.isPresent(addr)) { - TBEs[addr].TBEState := state; - } - if (cacheMemory.isTagPresent(addr)) { - cacheMemory[addr].CacheState := state; - - // Set permission - if ((state == State:I) || (state == State:MI) || (state == State:OI)) { - cacheMemory.changePermission(addr, AccessPermission:Invalid); - } else if (state == State:S || state == State:O) { - cacheMemory.changePermission(addr, AccessPermission:Read_Only); - } else if (state == State:M) { - cacheMemory.changePermission(addr, AccessPermission:Read_Write); - } else { - cacheMemory.changePermission(addr, AccessPermission:Busy); - } - } - } - - // ** OUT_PORTS ** - - out_port(requestNetwork_out, RequestMsg, requestFromCache); - out_port(responseNetwork_out, ResponseMsg, responseFromCache); - - // ** IN_PORTS ** - - // Response Network - in_port(responseNetwork_in, ResponseMsg, responseToCache) { - if (responseNetwork_in.isReady()) { - peek(responseNetwork_in, ResponseMsg) { - if(in_msg.Type == CoherenceResponseType:DATA) { - if(in_msg.NumPendingAcks == 0) { - trigger(Event:Data_ack_0, in_msg.Address); - } else { - if(in_msg.NumPendingAcks + TBEs[in_msg.Address].NumPendingAcks != 0) { - trigger(Event:Data_ack_not_0, in_msg.Address); - } else { - trigger(Event:Data_ack_not_0_last, in_msg.Address); - } - } - } else if(in_msg.Type == CoherenceResponseType:ACK) { - if(TBEs[in_msg.Address].NumPendingAcks != 1){ - trigger(Event:Proc_ack, in_msg.Address); - } else { - trigger(Event:Proc_last_ack, in_msg.Address); - } - } - } - } - } - - // Forwarded Request network - in_port(forwardedRequestNetwork_in, RequestMsg, forwardedRequestToCache) { - if(forwardedRequestNetwork_in.isReady()) { - peek(forwardedRequestNetwork_in, RequestMsg) { - if(in_msg.Type == CoherenceRequestType:GETS) { - trigger(Event:Forwarded_GETS, in_msg.Address); - } else if (in_msg.Type == CoherenceRequestType:GETX) { - trigger(Event:Forwarded_GETX, in_msg.Address); - } else if (in_msg.Type == CoherenceRequestType:INV) { - trigger(Event:INV, in_msg.Address); - } else if (in_msg.Type == CoherenceRequestType:WB_ACK) { - trigger(Event:Dir_WB_ack, in_msg.Address); - } else { - error("Invalid forwarded request type"); - } - } - } - } - - // Mandatory Queue - in_port(mandatoryQueue_in, CacheMsg, mandatoryQueue, desc="...") { - if (mandatoryQueue_in.isReady()) { - peek(mandatoryQueue_in, CacheMsg) { - if (cacheMemory.cacheAvail(in_msg.Address) == false) { - trigger(Event:Replacement, cacheMemory.cacheProbe(in_msg.Address)); - } else { - if (in_msg.Type == CacheRequestType:LD) { - trigger(Event:Load, in_msg.Address); - } else if (in_msg.Type == CacheRequestType:IFETCH) { - trigger(Event:Ifetch, in_msg.Address); - } else if ((in_msg.Type == CacheRequestType:ST) || (in_msg.Type == CacheRequestType:ATOMIC)) { - trigger(Event:Store, in_msg.Address); - } else { - error("Invalid CacheRequestType"); - } - } - } - } - } - - // Optional Queue - in_port(optionalQueue_in, CacheMsg, optionalQueue, desc="...") { - if (optionalQueue_in.isReady()) { - peek(optionalQueue_in, CacheMsg) { - if (cacheMemory.cacheAvail(in_msg.Address) == false) { - trigger(Event:Replacement, cacheMemory.cacheProbe(in_msg.Address)); - } else { - if (in_msg.Type == CacheRequestType:LD) { - trigger(Event:Load_prefetch, in_msg.Address); - } else if (in_msg.Type == CacheRequestType:IFETCH) { - trigger(Event:Load_prefetch, in_msg.Address); - } else if ((in_msg.Type == CacheRequestType:ST) || (in_msg.Type == CacheRequestType:ATOMIC)) { - trigger(Event:Store_prefetch, in_msg.Address); - } else { - error("Invalid CacheRequestType"); - } - } - } - } - } - - // ACTIONS - - action(a_issueGETS, "a", desc="Issue GETS") { - enqueue(requestNetwork_out, RequestMsg, latency="ISSUE_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceRequestType:GETS; - out_msg.Requestor := machineID; - out_msg.Destination.add(map_Address_to_Directory(address)); - out_msg.MessageSize := MessageSizeType:Control; - } - } - - action(b_issueGETX, "b", desc="Issue GETX") { - enqueue(requestNetwork_out, RequestMsg, latency="ISSUE_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceRequestType:GETX; - out_msg.Requestor := machineID; - out_msg.Destination.add(map_Address_to_Directory(address)); - out_msg.MessageSize := MessageSizeType:Control; - } - } - - action(d_issuePUTX, "d", desc="Issue PUTX") { - enqueue(requestNetwork_out, RequestMsg, latency="ISSUE_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceRequestType:PUTX; - out_msg.Requestor := machineID; - out_msg.Destination.add(map_Address_to_Directory(address)); - out_msg.DataBlk := cacheMemory[address].DataBlk; - out_msg.MessageSize := MessageSizeType:Data; - } - } - - action(e_dataFromCacheToRequestor, "e", desc="Send data from cache to requestor") { - peek(forwardedRequestNetwork_in, RequestMsg) { - enqueue(responseNetwork_out, ResponseMsg, latency="CACHE_RESPONSE_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceResponseType:DATA; - out_msg.Sender := machineID; - out_msg.SenderMachine := MachineType:L1Cache; - out_msg.NumPendingAcks := in_msg.NumPendingAcks; // Needed when in state O and we see a GetX - out_msg.Destination.add(in_msg.Requestor); - out_msg.DestMachine := MachineType:L1Cache; - DEBUG_EXPR(out_msg.Destination); - out_msg.DataBlk := cacheMemory[address].DataBlk; - out_msg.MessageSize := MessageSizeType:Data; - } - } - } - - action(g_allocateCacheBlock, "g", desc="Allocate cache block") { - if (cacheMemory.isTagPresent(address) == false) { - cacheMemory.allocate(address); - } - } - - action(h_load_hit, "h", desc="If not prefetch, notify sequencer the load completed.") { - DEBUG_EXPR(cacheMemory[address].DataBlk); - if((TBEs.isPresent(address) == false) || (TBEs[address].isPrefetch == false)) { - // Non-prefetch - sequencer.readCallback(address, cacheMemory[address].DataBlk); - } else { - // Prefetch - don't call back - } - } - - action(hh_store_hit, "\h", desc="If not prefetch, notify sequencer that store completed.") { - DEBUG_EXPR(cacheMemory[address].DataBlk); - if((TBEs.isPresent(address) == false) || (TBEs[address].isPrefetch == false)) { - // Non-prefetch - sequencer.writeCallback(address, cacheMemory[address].DataBlk); - } else { - // Prefetch - don't call back - } - } - - action(i_allocateTBE, "i", desc="Allocate TBE (isPrefetch=0, number of invalidates=0)") { - check_allocate(TBEs); - TBEs.allocate(address); - TBEs[address].NumPendingAcks := 0; // default value - TBEs[address].isPrefetch := false; - TBEs[address].ForwardGetS_IDs.clear(); - } - - action(j_setPrefetchBit, "j", desc="Set prefetch bit") { - TBEs[address].isPrefetch := true; - } - - action(k_popMandatoryQueue, "k", desc="Pop mandatory queue.") { - mandatoryQueue_in.dequeue(); - } - - action(l_popForwardedRequestQueue, "l", desc="Pop incoming forwarded request queue") { - forwardedRequestNetwork_in.dequeue(); - } - - action(m_popOptionalQueue, "m", desc="Pop optional queue") { - optionalQueue_in.dequeue(); - } - - action(o_popIncomingResponseQueue, "o", desc="Pop Incoming Response queue") { - responseNetwork_in.dequeue(); - } - - action(p_addNumberOfPendingAcks, "p", desc="Add number of pending acks to TBE") { - peek(responseNetwork_in, ResponseMsg) { - DEBUG_EXPR(TBEs[address].NumPendingAcks); - TBEs[address].NumPendingAcks := TBEs[address].NumPendingAcks + in_msg.NumPendingAcks; - DEBUG_EXPR(in_msg.NumPendingAcks); - DEBUG_EXPR(TBEs[address].NumPendingAcks); - } - } - - action(q_decrementNumberOfPendingAcks, "q", desc="Decrement number of pending invalidations by one") { - DEBUG_EXPR(TBEs[address].NumPendingAcks); - TBEs[address].NumPendingAcks := TBEs[address].NumPendingAcks - 1; - DEBUG_EXPR(TBEs[address].NumPendingAcks); - } - - action(s_deallocateTBE, "s", desc="Deallocate TBE") { - TBEs.deallocate(address); - } - - action(t_sendAckToInvalidator, "t", desc="Send ack to invalidator") { - peek(forwardedRequestNetwork_in, RequestMsg) { - enqueue(responseNetwork_out, ResponseMsg, latency="NULL_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceResponseType:ACK; - out_msg.Sender := machineID; - out_msg.SenderMachine := MachineType:L1Cache; - out_msg.Destination.add(in_msg.Requestor); - out_msg.DestMachine := MachineType:L1Cache; - DEBUG_EXPR(out_msg.Destination); - out_msg.NumPendingAcks := 0; - out_msg.MessageSize := MessageSizeType:Control; - } - } - } - - action(u_writeDataToCache, "u", desc="Write data to cache") { - peek(responseNetwork_in, ResponseMsg) { - cacheMemory[address].DataBlk := in_msg.DataBlk; - } - } - - action(x_copyDataFromCacheToTBE, "x", desc="Copy data from cache to TBE") { - TBEs[address].DataBlk := cacheMemory[address].DataBlk; - } - - action(y_dataFromTBEToRequestor, "y", desc="Send data from TBE to requestor") { - peek(forwardedRequestNetwork_in, RequestMsg) { - enqueue(responseNetwork_out, ResponseMsg, latency="NULL_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceResponseType:DATA; - out_msg.Sender := machineID; - out_msg.SenderMachine := MachineType:L1Cache; - out_msg.NumPendingAcks := in_msg.NumPendingAcks; // Needed when in state MS and we see a GetX - out_msg.Destination.add(in_msg.Requestor); - out_msg.DestMachine := MachineType:L1Cache; - DEBUG_EXPR(out_msg.Destination); - out_msg.DataBlk := TBEs[address].DataBlk; - out_msg.MessageSize := MessageSizeType:Data; - } - } - } - - action(z_stall, "z", desc="Stall") { - } - - action(dd_recordGetSForwardID, "\d", desc="Record forwarded GetS for future forwarding") { - peek(forwardedRequestNetwork_in, RequestMsg) { - TBEs[address].ForwardGetS_IDs.add(in_msg.Requestor); - } - } - - action(ee_dataFromCacheToGetSForwardIDs, "\e", desc="Send data from cache to GetS ForwardIDs") { - // FIXME - In some cases this should be from the TBE, not the cache. - enqueue(responseNetwork_out, ResponseMsg, latency="NULL_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceResponseType:DATA; - out_msg.Sender := machineID; - out_msg.SenderMachine := MachineType:L1Cache; - out_msg.Destination := TBEs[address].ForwardGetS_IDs; - out_msg.DestMachine := MachineType:L1Cache; - DEBUG_EXPR(out_msg.Destination); - out_msg.DataBlk := cacheMemory[address].DataBlk; - out_msg.NumPendingAcks := 0; - out_msg.MessageSize := MessageSizeType:Data; - } - } - - action(ff_deallocateCacheBlock, "\f", desc="Deallocate cache block. Sets the cache to invalid, allowing a replacement in parallel with a fetch.") { - cacheMemory.deallocate(address); - } - - action(gg_dataFromCacheToGetXForwardID, "\g", desc="Send data from cache to GetX ForwardID") { - // FIXME - In some cases this should be from the TBE, not the cache. - enqueue(responseNetwork_out, ResponseMsg, latency="NULL_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceResponseType:DATA; - out_msg.Sender := machineID; - out_msg.SenderMachine := MachineType:L1Cache; - out_msg.Destination.add(TBEs[address].ForwardGetX_ID); - out_msg.DestMachine := MachineType:L1Cache; - DEBUG_EXPR(out_msg.Destination); - out_msg.DataBlk := cacheMemory[address].DataBlk; - out_msg.NumPendingAcks := TBEs[address].ForwardGetX_AckCount; - out_msg.MessageSize := MessageSizeType:Data; - } - } - - action(ii_recordGetXForwardID, "\i", desc="Record forwarded GetX and ack count for future forwarding") { - peek(forwardedRequestNetwork_in, RequestMsg) { - TBEs[address].ForwardGetX_ID := in_msg.Requestor; - TBEs[address].ForwardGetX_AckCount := in_msg.NumPendingAcks; - } - } - - //***************************************************** - // TRANSITIONS - //***************************************************** - - // Transitions for Load/Store/Prefetch/Replacement from transient states - transition({OM, OI, IS, ISI, IM, IMO, IMOI, IMI, MI}, {Load, Load_prefetch, Ifetch, Store, Store_prefetch, Replacement}) { - z_stall; - } - - // Transitions from Idle - transition(I, {Load,Ifetch}, IS) { - g_allocateCacheBlock; - i_allocateTBE; - a_issueGETS; - k_popMandatoryQueue; - } - - transition(I, {Load_prefetch}, IS) { - g_allocateCacheBlock; - i_allocateTBE; - j_setPrefetchBit; - a_issueGETS; - m_popOptionalQueue; - } - - transition(I, Store, IM) { - g_allocateCacheBlock; - i_allocateTBE; - b_issueGETX; - k_popMandatoryQueue; - } - - transition(I, Store_prefetch, IM) { - g_allocateCacheBlock; - i_allocateTBE; - j_setPrefetchBit; - b_issueGETX; - m_popOptionalQueue; - } - - transition(I, Replacement) { - ff_deallocateCacheBlock; - } - - transition(I, INV) { - t_sendAckToInvalidator; - l_popForwardedRequestQueue; - } - - // Transitions from Shared - transition({S, O}, {Load,Ifetch}) { - h_load_hit; - k_popMandatoryQueue; - } - - transition({S, O, M}, Load_prefetch) { - m_popOptionalQueue; - } - - transition(S, Store, IM) { - i_allocateTBE; - b_issueGETX; - k_popMandatoryQueue; - } - - transition(S, Store_prefetch, IM) { - i_allocateTBE; - j_setPrefetchBit; - b_issueGETX; - m_popOptionalQueue; - } - - transition(S, Replacement, I) { - ff_deallocateCacheBlock; - } - - transition(S, INV, I) { - t_sendAckToInvalidator; - l_popForwardedRequestQueue; - } - - // Transitions from Modified - transition(M, {Load, Ifetch}) { - h_load_hit; - k_popMandatoryQueue; - } - - transition(M, Store) { - hh_store_hit; - k_popMandatoryQueue; - } - - transition(M, Store_prefetch) { - m_popOptionalQueue; - } - - transition(M, Replacement, MI) { - i_allocateTBE; - d_issuePUTX; - x_copyDataFromCacheToTBE; - ff_deallocateCacheBlock; - } - - transition(M, Forwarded_GETS, O) { - e_dataFromCacheToRequestor; - l_popForwardedRequestQueue; - } - - transition(M, Forwarded_GETX, I) { - e_dataFromCacheToRequestor; - l_popForwardedRequestQueue; - } - - // Transitions from O - transition(O, Store, OM) { - i_allocateTBE; - b_issueGETX; - k_popMandatoryQueue; - } - - transition(O, Store_prefetch, OM) { - i_allocateTBE; - j_setPrefetchBit; - b_issueGETX; - m_popOptionalQueue; - } - - transition(O, Replacement, OI){ - i_allocateTBE; - d_issuePUTX; - x_copyDataFromCacheToTBE; - ff_deallocateCacheBlock; - } - - transition(O, Forwarded_GETS) { - e_dataFromCacheToRequestor; - l_popForwardedRequestQueue; - } - - transition(O, Forwarded_GETX, I) { - e_dataFromCacheToRequestor; - l_popForwardedRequestQueue; - } - - // transitions from OI - - transition(OI, Forwarded_GETS) { - y_dataFromTBEToRequestor; - l_popForwardedRequestQueue; - } - - transition(OI, Forwarded_GETX) { - y_dataFromTBEToRequestor; - l_popForwardedRequestQueue; - } - - transition(OI, Dir_WB_ack, I) { - s_deallocateTBE; - l_popForwardedRequestQueue; - } - - // Transitions from IS - - transition(IS, INV, ISI) { - t_sendAckToInvalidator; - l_popForwardedRequestQueue; - } - - transition(IS, Data_ack_0, S) { - u_writeDataToCache; - h_load_hit; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - // transitions from ISI - - // in ISI, could get data from the Proc whose GETX caused INV to go from IS to ISI - // or, could get data from Dir if Dir's data lost race to Dir's INV - // or, could get data from Dir, if my GETS took forever to get to Dir, and the GETX - // processor already wrote it back - - transition(ISI, Data_ack_0, I) { - u_writeDataToCache; - h_load_hit; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - transition(ISI, INV) { - t_sendAckToInvalidator; - l_popForwardedRequestQueue; - } - - // Transitions from IM - - transition(IM, INV) { // do not need to go to IMI, since INV is for earlier epoch - t_sendAckToInvalidator; - l_popForwardedRequestQueue; - } - - transition({IM, IMO}, Forwarded_GETS, IMO) { - dd_recordGetSForwardID; - l_popForwardedRequestQueue; - } - - transition(IM, Forwarded_GETX, IMI) { - ii_recordGetXForwardID; - l_popForwardedRequestQueue; - } - - transition(IM, {Data_ack_0, Data_ack_not_0_last}, M) { - u_writeDataToCache; - hh_store_hit; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - transition(IM, Data_ack_not_0) { - u_writeDataToCache; - p_addNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(IM, Proc_ack) { - q_decrementNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(IM, Proc_last_ack, M) { - hh_store_hit; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - // transitions from IMO - - transition(IMO, Forwarded_GETX, IMOI) { - ii_recordGetXForwardID; - l_popForwardedRequestQueue; - } - - transition(IMO, {Data_ack_0, Data_ack_not_0_last}, O) { - u_writeDataToCache; - hh_store_hit; - ee_dataFromCacheToGetSForwardIDs; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - transition(IMO, Data_ack_not_0) { - u_writeDataToCache; - p_addNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(IMO, Proc_ack) { - q_decrementNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(IMO, Proc_last_ack, O) { - hh_store_hit; - ee_dataFromCacheToGetSForwardIDs; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - // transitions from IMI - - transition(IMI, {Data_ack_0, Data_ack_not_0_last}, I) { - u_writeDataToCache; - hh_store_hit; - gg_dataFromCacheToGetXForwardID; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - transition(IMI, Data_ack_not_0) { - u_writeDataToCache; - p_addNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(IMI, Proc_ack) { - q_decrementNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(IMI, Proc_last_ack, I) { - hh_store_hit; - gg_dataFromCacheToGetXForwardID; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - // transitions from IMOI - - transition(IMOI, {Data_ack_0, Data_ack_not_0_last}, I) { - u_writeDataToCache; - hh_store_hit; - ee_dataFromCacheToGetSForwardIDs; - gg_dataFromCacheToGetXForwardID; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - transition(IMOI, Data_ack_not_0) { - u_writeDataToCache; - p_addNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(IMOI, Proc_ack) { - q_decrementNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(IMOI, Proc_last_ack, I) { - hh_store_hit; - ee_dataFromCacheToGetSForwardIDs; - gg_dataFromCacheToGetXForwardID; - s_deallocateTBE; - o_popIncomingResponseQueue; - } - - // Transitions from OM - transition(OM, Proc_ack) { - q_decrementNumberOfPendingAcks; - o_popIncomingResponseQueue; - } - - transition(OM, Forwarded_GETS) { - e_dataFromCacheToRequestor; - l_popForwardedRequestQueue; - } - - transition(OM, Forwarded_GETX, IM) { - e_dataFromCacheToRequestor; - l_popForwardedRequestQueue; - } - - // Transitions from MI - - transition(MI, Forwarded_GETS) { - y_dataFromTBEToRequestor; - l_popForwardedRequestQueue; - } - - transition(MI, Forwarded_GETX) { - y_dataFromTBEToRequestor; - l_popForwardedRequestQueue; - } - - transition(MI, Dir_WB_ack, I) { - s_deallocateTBE; - l_popForwardedRequestQueue; - } -} |