diff options
Diffstat (limited to 'src/mem/protocol/MESI_SCMP_bankdirectory_m-mem.sm')
| -rw-r--r-- | src/mem/protocol/MESI_SCMP_bankdirectory_m-mem.sm | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/src/mem/protocol/MESI_SCMP_bankdirectory_m-mem.sm b/src/mem/protocol/MESI_SCMP_bankdirectory_m-mem.sm new file mode 100644 index 000000000..37ecb2ffa --- /dev/null +++ b/src/mem/protocol/MESI_SCMP_bankdirectory_m-mem.sm @@ -0,0 +1,250 @@ + +/* + * 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 $ + */ + +// This file is copied from Yasuko Watanabe's prefetch / memory protocol +// Copied here by aep 12/14/07 + + +machine(Directory, "MESI_SCMP_bankdirectory 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 memory fetch arrives"; + Data, desc="writeback data arrives"; + Memory_Data, desc="Fetched data from memory arrives"; + Memory_Ack, desc="Writeback Ack from memory arrives"; + } + + // TYPES + + // DirectoryEntry + structure(Entry, desc="...") { + DataBlock DataBlk, desc="data for the block"; + } + + external_type(DirectoryMemory) { + Entry lookup(Address); + bool isPresent(Address); + } + + // to simulate detailed DRAM + external_type(MemoryControl, inport="yes", outport="yes") { + + } + + + // ** OBJECTS ** + + DirectoryMemory directory, constructor_hack="i"; + MemoryControl memBuffer, constructor_hack="i"; + + State getState(Address addr) { + return State:I; + } + + void setState(Address addr, State state) { + } + + bool isGETRequest(CoherenceRequestType type) { + return (type == CoherenceRequestType:GETS) || + (type == CoherenceRequestType:GET_INSTR) || + (type == CoherenceRequestType:GETX); + } + + + // ** OUT_PORTS ** + out_port(responseNetwork_out, ResponseMsg, responseFromDir); + out_port(memQueue_out, MemoryMsg, memBuffer); + + // ** IN_PORTS ** + + in_port(requestNetwork_in, RequestMsg, requestToDir) { + if (requestNetwork_in.isReady()) { + peek(requestNetwork_in, RequestMsg) { + assert(in_msg.Destination.isElement(machineID)); + if (isGETRequest(in_msg.Type)) { + trigger(Event:Fetch, in_msg.Address); + } else { + DEBUG_EXPR(in_msg); + 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"); + } + } + } + } + + // off-chip memory request/response is done + in_port(memQueue_in, MemoryMsg, memBuffer) { + if (memQueue_in.isReady()) { + peek(memQueue_in, MemoryMsg) { + if (in_msg.Type == MemoryRequestType:MEMORY_READ) { + trigger(Event:Memory_Data, in_msg.Address); + } else if (in_msg.Type == MemoryRequestType:MEMORY_WB) { + trigger(Event:Memory_Ack, in_msg.Address); + } else { + DEBUG_EXPR(in_msg.Type); + error("Invalid message"); + } + } + } + } + + + + // Actions + action(a_sendAck, "a", desc="Send ack to L2") { + peek(memQueue_in, MemoryMsg) { + enqueue(responseNetwork_out, ResponseMsg, latency="1") { + out_msg.Address := address; + out_msg.Type := CoherenceResponseType:MEMORY_ACK; + out_msg.Sender := machineID; + out_msg.Destination.add(in_msg.OriginalRequestorMachId); + out_msg.MessageSize := MessageSizeType:Response_Control; + } + } + } + + action(d_sendData, "d", desc="Send data to requestor") { + peek(memQueue_in, MemoryMsg) { + enqueue(responseNetwork_out, ResponseMsg, latency="1") { + out_msg.Address := address; + out_msg.Type := CoherenceResponseType:MEMORY_DATA; + out_msg.Sender := machineID; + out_msg.Destination.add(in_msg.OriginalRequestorMachId); + out_msg.DataBlk := in_msg.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(l_popMemQueue, "q", desc="Pop off-chip request queue") { + memQueue_in.dequeue(); + } + + action(qf_queueMemoryFetchRequest, "qf", desc="Queue off-chip fetch request") { + peek(requestNetwork_in, RequestMsg) { + enqueue(memQueue_out, MemoryMsg, latency="1") { + out_msg.Address := address; + out_msg.Type := MemoryRequestType:MEMORY_READ; + out_msg.Sender := machineID; + out_msg.OriginalRequestorMachId := in_msg.Requestor; + out_msg.MessageSize := in_msg.MessageSize; + out_msg.Prefetch := in_msg.Prefetch; + out_msg.DataBlk := directory[in_msg.Address].DataBlk; + + DEBUG_EXPR(out_msg); + } + } + } + + action(qw_queueMemoryWBRequest, "qw", desc="Queue off-chip writeback request") { + peek(responseNetwork_in, ResponseMsg) { + enqueue(memQueue_out, MemoryMsg, latency="1") { + out_msg.Address := address; + out_msg.Type := MemoryRequestType:MEMORY_WB; + out_msg.Sender := machineID; + out_msg.OriginalRequestorMachId := in_msg.Sender; + out_msg.DataBlk := in_msg.DataBlk; + out_msg.MessageSize := in_msg.MessageSize; + //out_msg.Prefetch := in_msg.Prefetch; + + DEBUG_EXPR(out_msg); + } + } + } + + 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; + qf_queueMemoryFetchRequest; + j_popIncomingRequestQueue; + } + + transition(I, Data) { + m_writeDataToMemory; + //a_sendAck; + qw_queueMemoryWBRequest; + k_popIncomingResponseQueue; + } + + transition(I, Memory_Data) { + d_sendData; + l_popMemQueue; + } + + transition(I, Memory_Ack) { + a_sendAck; + l_popMemQueue; + } +} |