diff options
Diffstat (limited to 'src/mem/protocol/MOSI_SMP_directory_1level-dir.sm')
| -rw-r--r-- | src/mem/protocol/MOSI_SMP_directory_1level-dir.sm | 333 |
1 files changed, 0 insertions, 333 deletions
diff --git a/src/mem/protocol/MOSI_SMP_directory_1level-dir.sm b/src/mem/protocol/MOSI_SMP_directory_1level-dir.sm deleted file mode 100644 index fa91b1baa..000000000 --- a/src/mem/protocol/MOSI_SMP_directory_1level-dir.sm +++ /dev/null @@ -1,333 +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-dir.sm 1.14 04/09/07 13:52:52-05:00 mikem@maya.cs.wisc.edu $ - */ - -machine(Directory, "MOSI Directory Optimized") { - - - MessageBuffer forwardedRequestFromDir, network="To", virtual_network="1", ordered="true"; - MessageBuffer responseFromDir, network="To", virtual_network="2", ordered="false"; - MessageBuffer requestToDir, network="From", virtual_network="0", ordered="false"; - - // STATES - enumeration(State, desc="Directory states", default="Directory_State_I") { - // Base states - I, desc="Idle"; - S, desc="Shared"; - O, desc="Owned"; - M, desc="Modified", format="!b"; - } - - // Events - enumeration(Event, desc="Directory events") { - GETS, desc="A GETS arrives"; - GETX_Owner, desc="A GETX arrives, requestor is owner"; - GETX_NotOwner, desc="A GETX arrives, requestor is not owner"; - PUTX_Owner, "PUTX (requestor is owner)", desc="A PUTX arrives, requestor is owner"; - PUTX_NotOwner, "PUTX (requestor not owner)",desc="A PUTX arrives, requestor is not owner"; - } - - // TYPES - - // DirectoryEntry - structure(Entry, desc="...") { - State DirectoryState, desc="Directory state"; - NetDest Sharers, desc="Set of sharers"; - bool DirOwner, default="true", desc="Is dir owner?"; - MachineID ProcOwner, desc="Processor owner"; - DataBlock DataBlk, desc="data for the block"; - } - - external_type(DirectoryMemory) { - Entry lookup(Address); - bool isPresent(Address); - } - - // ** OBJECTS ** - - DirectoryMemory directory, constructor_hack="i"; - - State getState(Address addr) { - if (directory.isPresent(addr)) { - return directory[addr].DirectoryState; - } - return State:I; - } - - void setState(Address addr, State state) { - if (directory.isPresent(addr)) { - directory[addr].DirectoryState := state; - } - } - - // ** OUT_PORTS ** - out_port(forwardedRequestNetwork_out, RequestMsg, forwardedRequestFromDir); - out_port(responseNetwork_out, ResponseMsg, responseFromDir); - - // ** IN_PORTS ** - - in_port(requestNetwork_in, RequestMsg, requestToDir) { - if (requestNetwork_in.isReady()) { - peek(requestNetwork_in, RequestMsg) { - if (in_msg.Type == CoherenceRequestType:GETS) { - trigger(Event:GETS, in_msg.Address); - } else if (in_msg.Type == CoherenceRequestType:GETX) { - if(directory[in_msg.Address].DirOwner == false && in_msg.Requestor == directory[in_msg.Address].ProcOwner) { - trigger(Event:GETX_Owner, in_msg.Address); - } else { - trigger(Event:GETX_NotOwner, in_msg.Address); - } - } else if (in_msg.Type == CoherenceRequestType:PUTX) { - if (directory[in_msg.Address].DirOwner == false && in_msg.Requestor == directory[in_msg.Address].ProcOwner) { - trigger(Event:PUTX_Owner, in_msg.Address); - } else { - trigger(Event:PUTX_NotOwner, in_msg.Address); - } - } else { - error("Invalid message"); - } - } - } - } - - - // Actions - - // a_addRequestorToSharers - - action(a_addRequestorToSharers, "a", desc="Add requestor to list of sharers") { - peek(requestNetwork_in, RequestMsg) { - directory[address].Sharers.add(in_msg.Requestor); - DEBUG_EXPR(directory[address].Sharers); - } - } - - // b_dataToRequestor - - action(b_dataToRequestor, "b", desc="Send data to requestor") { - peek(requestNetwork_in, RequestMsg) { - enqueue(responseNetwork_out, ResponseMsg, latency="MEMORY_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceResponseType:DATA; - out_msg.Sender := machineID; - out_msg.SenderMachine := MachineType:Directory; - if(in_msg.Type == CoherenceRequestType:GETX) { - out_msg.NumPendingAcks := directory[address].Sharers.count(); - } else { - out_msg.NumPendingAcks := 0; // don't need to send pending ack count to GETS requestor - } - out_msg.Destination.add(in_msg.Requestor); - out_msg.DestMachine := MachineType:L1Cache; - out_msg.DataBlk := directory[address].DataBlk; - DEBUG_EXPR(out_msg.NumPendingAcks); - DEBUG_EXPR(out_msg.Destination); - out_msg.MessageSize := MessageSizeType:Data; - } - } - } - - // d_forwardRequestToOwner - - action(d_forwardRequestToOwner, "d", desc="Forward request to owner") { - peek(requestNetwork_in, RequestMsg) { - enqueue(forwardedRequestNetwork_out, RequestMsg, latency="DIRECTORY_LATENCY") { - out_msg.Address := address; - out_msg.Type := in_msg.Type; - out_msg.Requestor := in_msg.Requestor; - out_msg.Destination.add(directory[address].ProcOwner); - DEBUG_EXPR(out_msg.Destination); - - if(in_msg.Type == CoherenceRequestType:GETX) { - out_msg.NumPendingAcks := directory[address].Sharers.count(); - } else { - out_msg.NumPendingAcks := 0; // don't need to send pending ack count to GETS requestor - } - out_msg.MessageSize := MessageSizeType:Control; - } - } - } - - action(f_setOwnerToRequestor, "f", desc="Set owner equal to requestor") { - peek(requestNetwork_in, RequestMsg) { - directory[address].ProcOwner := in_msg.Requestor; - directory[address].DirOwner := false; - } - DEBUG_EXPR(directory[address].ProcOwner); - } - - action(g_clearSharers, "g", desc="Clear list of sharers") { - directory[address].Sharers.clear(); - } - - // currently done via multicast message - - action(h_invToSharers, "h", desc="Send INVs to all sharers") { - peek(requestNetwork_in, RequestMsg) { - if(directory[address].Sharers.count() != 0){ - enqueue(forwardedRequestNetwork_out, RequestMsg, latency="DIRECTORY_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceRequestType:INV; - out_msg.Requestor := in_msg.Requestor; - out_msg.Destination := directory[address].Sharers; - out_msg.MessageSize := MessageSizeType:Control; - } - } - } - DEBUG_EXPR(directory[address].Sharers); - } - - action(j_popIncomingRequestQueue, "j", desc="Pop incoming request queue") { - requestNetwork_in.dequeue(); - } - - action(l_writeRequestDataToMemory, "l", desc="Write PUTX/DWN data to memory") { - peek(requestNetwork_in, RequestMsg) { - directory[in_msg.Address].DataBlk := in_msg.DataBlk; - DEBUG_EXPR(in_msg.Address); - DEBUG_EXPR(in_msg.DataBlk); - } - } - - action(n_writebackAckToRequestor, "n", desc="Send WB_ack to requestor") { - peek(requestNetwork_in, RequestMsg) { - // This needs to be DIRECTORY_LATENCY to keep the queue fifo - enqueue(forwardedRequestNetwork_out, RequestMsg, latency="DIRECTORY_LATENCY") { - out_msg.Address := address; - out_msg.Type := CoherenceRequestType:WB_ACK; - out_msg.Requestor := machineID; - out_msg.Destination.add(in_msg.Requestor); - out_msg.MessageSize := MessageSizeType:Control; - } - } - } - - action(p_clearOwner, "p", desc="Clear owner") { - directory[address].DirOwner := true; // set owner equal to dir - } - - action(r_addOwnerToSharers, "r", desc="Add owner to list of sharers") { - directory[address].Sharers.add(directory[address].ProcOwner); - } - - action(t_removeOwnerFromSharers, "t", desc="Remove owner from list of sharers") { - directory[address].Sharers.remove(directory[address].ProcOwner); - } - - action(u_removeRequestorFromSharers, "u", desc="Remove requestor from list of sharers") { - peek(requestNetwork_in, RequestMsg) { - directory[address].Sharers.remove(in_msg.Requestor); - } - } - - // TRANSITIONS - - transition({I, S, M, O}, PUTX_NotOwner) { - n_writebackAckToRequestor; - j_popIncomingRequestQueue; - } - - // Transitions from Idle - transition(I, GETS, S) { - a_addRequestorToSharers; - b_dataToRequestor; - j_popIncomingRequestQueue; - } - - transition(I, GETX_NotOwner, M) { - f_setOwnerToRequestor; - b_dataToRequestor; - j_popIncomingRequestQueue; - } - - // Transitions from Shared - transition(S, GETS) { - a_addRequestorToSharers; - b_dataToRequestor; - j_popIncomingRequestQueue; - } - - transition(S, GETX_NotOwner, M) { - u_removeRequestorFromSharers; - b_dataToRequestor; - f_setOwnerToRequestor; - h_invToSharers; - g_clearSharers; - j_popIncomingRequestQueue; - } - - // Transitions from Owned - transition(O, GETS) { - a_addRequestorToSharers; - d_forwardRequestToOwner; - j_popIncomingRequestQueue; - } - - transition(O, {GETX_NotOwner, GETX_Owner}, M) { - u_removeRequestorFromSharers; - t_removeOwnerFromSharers; - d_forwardRequestToOwner; - f_setOwnerToRequestor; - h_invToSharers; - g_clearSharers; - j_popIncomingRequestQueue; - } - - transition(O, PUTX_Owner, S) { - u_removeRequestorFromSharers; - l_writeRequestDataToMemory; - n_writebackAckToRequestor; - p_clearOwner; - j_popIncomingRequestQueue; - } - - - // Transitions from Modified - transition(M, GETS, O) { - a_addRequestorToSharers; - r_addOwnerToSharers; - d_forwardRequestToOwner; - j_popIncomingRequestQueue; - } - - transition(M, GETX_NotOwner) { - d_forwardRequestToOwner; - f_setOwnerToRequestor; - j_popIncomingRequestQueue; - } - - transition(M, PUTX_Owner, I) { - l_writeRequestDataToMemory; - n_writebackAckToRequestor; - p_clearOwner; - j_popIncomingRequestQueue; - } -} |