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author | Nathan Binkert <nate@binkert.org> | 2009-05-11 10:38:43 -0700 |
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committer | Nathan Binkert <nate@binkert.org> | 2009-05-11 10:38:43 -0700 |
commit | 2f30950143cc70bc42a3c8a4111d7cf8198ec881 (patch) | |
tree | 708f6c22edb3c6feb31dd82866c26623a5329580 /src/mem/protocol/MESI_SCMP_bankdirectory-mem.sm | |
parent | c70241810d4e4f523f173c1646b008dc40faad8e (diff) | |
download | gem5-2f30950143cc70bc42a3c8a4111d7cf8198ec881.tar.xz |
ruby: Import ruby and slicc from GEMS
We eventually plan to replace the m5 cache hierarchy with the GEMS
hierarchy, but for now we will make both live alongside eachother.
Diffstat (limited to 'src/mem/protocol/MESI_SCMP_bankdirectory-mem.sm')
-rw-r--r-- | src/mem/protocol/MESI_SCMP_bankdirectory-mem.sm | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/mem/protocol/MESI_SCMP_bankdirectory-mem.sm b/src/mem/protocol/MESI_SCMP_bankdirectory-mem.sm new file mode 100644 index 000000000..1fcd234fe --- /dev/null +++ b/src/mem/protocol/MESI_SCMP_bankdirectory-mem.sm @@ -0,0 +1,166 @@ + +/* + * 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: MOESI_CMP_token-dir.sm 1.6 05/01/19 15:48:35-06:00 mikem@royal16.cs.wisc.edu $ + */ + + +machine(Directory, "Token protocol") { + + MessageBuffer requestToDir, network="From", virtual_network="2", ordered="false"; + MessageBuffer responseToDir, network="From", virtual_network="3", ordered="false"; + MessageBuffer responseFromDir, network="To", virtual_network="3", ordered="false"; + + // STATES + enumeration(State, desc="Directory states", default="Directory_State_I") { + // Base states + I, desc="Owner"; + } + + // Events + enumeration(Event, desc="Directory events") { + Fetch, desc="A GETX arrives"; + Data, desc="A GETS arrives"; + } + + // TYPES + + // DirectoryEntry + structure(Entry, desc="...") { + 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) { + return State:I; + } + + void setState(Address addr, State state) { + } + + // ** OUT_PORTS ** + out_port(responseNetwork_out, ResponseMsg, responseFromDir); + + // ** IN_PORTS ** + + in_port(requestNetwork_in, RequestMsg, requestToDir) { + if (requestNetwork_in.isReady()) { + peek(requestNetwork_in, RequestMsg) { + assert(in_msg.Destination.isElement(machineID)); + if (in_msg.Type == CoherenceRequestType:GETS) { + trigger(Event:Fetch, in_msg.Address); + } else if (in_msg.Type == CoherenceRequestType:GETX) { + trigger(Event:Fetch, in_msg.Address); + } else { + error("Invalid message"); + } + } + } + } + + in_port(responseNetwork_in, ResponseMsg, responseToDir) { + if (responseNetwork_in.isReady()) { + peek(responseNetwork_in, ResponseMsg) { + assert(in_msg.Destination.isElement(machineID)); + if (in_msg.Type == CoherenceResponseType:MEMORY_DATA) { + trigger(Event:Data, in_msg.Address); + } else { + DEBUG_EXPR(in_msg.Type); + error("Invalid message"); + } + } + } + } + + // Actions + action(a_sendAck, "a", desc="Send ack to L2") { + peek(responseNetwork_in, ResponseMsg) { + enqueue(responseNetwork_out, ResponseMsg, latency="MEMORY_LATENCY") { + out_msg.Address := address; + out_msg.Type := CoherenceResponseType:MEMORY_ACK; + out_msg.Sender := machineID; + out_msg.Destination.add(in_msg.Sender); + out_msg.MessageSize := MessageSizeType:Response_Control; + } + } + } + + action(d_sendData, "d", desc="Send data to requestor") { + peek(requestNetwork_in, RequestMsg) { + enqueue(responseNetwork_out, ResponseMsg, latency="MEMORY_LATENCY") { + out_msg.Address := address; + out_msg.Type := CoherenceResponseType:MEMORY_DATA; + out_msg.Sender := machineID; + out_msg.Destination.add(in_msg.Requestor); + out_msg.DataBlk := directory[in_msg.Address].DataBlk; + out_msg.Dirty := false; + out_msg.MessageSize := MessageSizeType:Response_Data; + } + } + } + + action(j_popIncomingRequestQueue, "j", desc="Pop incoming request queue") { + requestNetwork_in.dequeue(); + } + + action(k_popIncomingResponseQueue, "k", desc="Pop incoming request queue") { + responseNetwork_in.dequeue(); + } + + action(m_writeDataToMemory, "m", desc="Write dirty writeback to memory") { + peek(responseNetwork_in, ResponseMsg) { + directory[in_msg.Address].DataBlk := in_msg.DataBlk; + DEBUG_EXPR(in_msg.Address); + DEBUG_EXPR(in_msg.DataBlk); + } + } + + // TRANSITIONS + + transition(I, Fetch) { + d_sendData; + j_popIncomingRequestQueue; + } + + transition(I, Data) { + m_writeDataToMemory; + a_sendAck; + k_popIncomingResponseQueue; + } +} |