-
-machine(Directory, "Directory protocol") {
-
- MessageBuffer forwardFromDir, network="To", virtual_network="2", ordered="true";
- MessageBuffer responseFromDir, network="To", virtual_network="1", ordered="false";
-
- MessageBuffer requestToDir, network="From", virtual_network="0", ordered="true";
- MessageBuffer unblockToDir, network="From", virtual_network="3", ordered="true";
-
+/*
+ * Copyright (c) 2009-2012 Mark D. Hill and David A. Wood
+ * Copyright (c) 2010-2012 Advanced Micro Devices, Inc.
+ * 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.
+ */
+
+machine(MachineType:Directory, "Directory protocol")
+ : DirectoryMemory * directory;
+ Cycles directory_latency := 12;
+ Cycles to_memory_controller_latency := 1;
+
+ MessageBuffer * forwardFromDir, network="To", virtual_network="3",
+ vnet_type="forward";
+ MessageBuffer * responseFromDir, network="To", virtual_network="4",
+ vnet_type="response";
+ MessageBuffer * dmaResponseFromDir, network="To", virtual_network="1",
+ vnet_type="response";
+
+ MessageBuffer * requestToDir, network="From", virtual_network="2",
+ vnet_type="request";
+ MessageBuffer * dmaRequestToDir, network="From", virtual_network="0",
+ vnet_type="request";
+ MessageBuffer * responseFromMemory;
+{
// STATES
- enumeration(State, desc="Directory states", default="Directory_State_I") {
+ state_declaration(State, desc="Directory states", default="Directory_State_I") {
// Base states
- I, desc="Invalid";
- M, desc="Modified";
+ I, AccessPermission:Read_Write, desc="Invalid";
+ M, AccessPermission:Invalid, desc="Modified";
+
+ M_DRD, AccessPermission:Busy, desc="Blocked on an invalidation for a DMA read";
+ M_DWR, AccessPermission:Busy, desc="Blocked on an invalidation for a DMA write";
- MI, desc="Blocked on a writeback";
+ M_DWRI, AccessPermission:Busy, desc="Intermediate state M_DWR-->I";
+ M_DRDI, AccessPermission:Busy, desc="Intermediate state M_DRD-->I";
+
+ IM, AccessPermission:Busy, desc="Intermediate state I-->M";
+ MI, AccessPermission:Busy, desc="Intermediate state M-->I";
+ ID, AccessPermission:Busy, desc="Intermediate state for DMA_READ when in I";
+ ID_W, AccessPermission:Busy, desc="Intermediate state for DMA_WRITE when in I";
}
// Events
enumeration(Event, desc="Directory events") {
+ // processor requests
GETX, desc="A GETX arrives";
GETS, desc="A GETS arrives";
PUTX, desc="A PUTX arrives";
PUTX_NotOwner, desc="A PUTX arrives";
- PUTO, desc="A PUTO arrives";
- Unblock, desc="An unblock message arrives";
+
+ // DMA requests
+ DMA_READ, desc="A DMA Read memory request";
+ DMA_WRITE, desc="A DMA Write memory request";
+
+ // Memory Controller
+ Memory_Data, desc="Fetched data from memory arrives";
+ Memory_Ack, desc="Writeback Ack from memory arrives";
}
// TYPES
// DirectoryEntry
- structure(Entry, desc="...") {
+ structure(Entry, desc="...", interface="AbstractEntry") {
State DirectoryState, desc="Directory state";
- DataBlock DataBlk, desc="data for the block";
NetDest Sharers, desc="Sharers for this block";
NetDest Owner, desc="Owner of this block";
}
- external_type(DirectoryMemory) {
- Entry lookup(Address);
- bool isPresent(Address);
+ // TBE entries for DMA requests
+ structure(TBE, desc="TBE entries for outstanding DMA requests") {
+ Addr PhysicalAddress, desc="physical address";
+ State TBEState, desc="Transient State";
+ DataBlock DataBlk, desc="Data to be written (DMA write only)";
+ int Len, desc="...";
+ MachineID DmaRequestor, desc="DMA requestor";
}
+ structure(TBETable, external="yes") {
+ TBE lookup(Addr);
+ void allocate(Addr);
+ void deallocate(Addr);
+ bool isPresent(Addr);
+ }
// ** OBJECTS **
+ TBETable TBEs, template="<Directory_TBE>", constructor="m_number_of_TBEs";
+
+ Tick clockEdge();
+ Cycles ticksToCycles(Tick t);
+ Tick cyclesToTicks(Cycles c);
+ void set_tbe(TBE b);
+ void unset_tbe();
- DirectoryMemory directory, constructor_hack="i";
+ Entry getDirectoryEntry(Addr addr), return_by_pointer="yes" {
+ Entry dir_entry := static_cast(Entry, "pointer", directory[addr]);
- State getState(Address addr) {
- return directory[addr].DirectoryState;
+ if (is_valid(dir_entry)) {
+ return dir_entry;
+ }
+
+ dir_entry := static_cast(Entry, "pointer",
+ directory.allocate(addr, new Entry));
+ return dir_entry;
}
+
+ State getState(TBE tbe, Addr addr) {
+ if (is_valid(tbe)) {
+ return tbe.TBEState;
+ } else if (directory.isPresent(addr)) {
+ return getDirectoryEntry(addr).DirectoryState;
+ } else {
+ return State:I;
+ }
+ }
+
+ void setState(TBE tbe, Addr addr, State state) {
+
+ if (is_valid(tbe)) {
+ tbe.TBEState := state;
+ }
- void setState(Address addr, State state) {
if (directory.isPresent(addr)) {
- if (state == State:I) {
- assert(directory[addr].Owner.count() == 0);
- assert(directory[addr].Sharers.count() == 0);
+ if (state == State:M) {
+ assert(getDirectoryEntry(addr).Owner.count() == 1);
+ assert(getDirectoryEntry(addr).Sharers.count() == 0);
}
- if (state == State:M) {
- assert(directory[addr].Owner.count() == 1);
- assert(directory[addr].Sharers.count() == 0);
+ getDirectoryEntry(addr).DirectoryState := state;
+
+ if (state == State:I) {
+ assert(getDirectoryEntry(addr).Owner.count() == 0);
+ assert(getDirectoryEntry(addr).Sharers.count() == 0);
}
+ }
+ }
+
+ AccessPermission getAccessPermission(Addr addr) {
+ TBE tbe := TBEs[addr];
+ if(is_valid(tbe)) {
+ return Directory_State_to_permission(tbe.TBEState);
+ }
- directory[addr].DirectoryState := state;
+ if(directory.isPresent(addr)) {
+ return Directory_State_to_permission(getDirectoryEntry(addr).DirectoryState);
}
+
+ return AccessPermission:NotPresent;
+ }
+
+ void setAccessPermission(Addr addr, State state) {
+ if (directory.isPresent(addr)) {
+ getDirectoryEntry(addr).changePermission(Directory_State_to_permission(state));
+ }
+ }
+
+ void functionalRead(Addr addr, Packet *pkt) {
+ TBE tbe := TBEs[addr];
+ if(is_valid(tbe)) {
+ testAndRead(addr, tbe.DataBlk, pkt);
+ } else {
+ functionalMemoryRead(pkt);
+ }
+ }
+
+ int functionalWrite(Addr addr, Packet *pkt) {
+ int num_functional_writes := 0;
+
+ TBE tbe := TBEs[addr];
+ if(is_valid(tbe)) {
+ num_functional_writes := num_functional_writes +
+ testAndWrite(addr, tbe.DataBlk, pkt);
+ }
+
+ num_functional_writes := num_functional_writes + functionalMemoryWrite(pkt);
+ return num_functional_writes;
}
// ** OUT_PORTS **
out_port(forwardNetwork_out, RequestMsg, forwardFromDir);
out_port(responseNetwork_out, ResponseMsg, responseFromDir);
out_port(requestQueue_out, ResponseMsg, requestToDir); // For recycling requests
+ out_port(dmaResponseNetwork_out, DMAResponseMsg, dmaResponseFromDir);
// ** IN_PORTS **
-
+ in_port(dmaRequestQueue_in, DMARequestMsg, dmaRequestToDir) {
+ if (dmaRequestQueue_in.isReady(clockEdge())) {
+ peek(dmaRequestQueue_in, DMARequestMsg) {
+ TBE tbe := TBEs[in_msg.LineAddress];
+ if (in_msg.Type == DMARequestType:READ) {
+ trigger(Event:DMA_READ, in_msg.LineAddress, tbe);
+ } else if (in_msg.Type == DMARequestType:WRITE) {
+ trigger(Event:DMA_WRITE, in_msg.LineAddress, tbe);
+ } else {
+ error("Invalid message");
+ }
+ }
+ }
+ }
in_port(requestQueue_in, RequestMsg, requestToDir) {
- if (requestQueue_in.isReady()) {
+ if (requestQueue_in.isReady(clockEdge())) {
peek(requestQueue_in, RequestMsg) {
+ TBE tbe := TBEs[in_msg.addr];
if (in_msg.Type == CoherenceRequestType:GETS) {
- trigger(Event:GETS, in_msg.Address);
+ trigger(Event:GETS, in_msg.addr, tbe);
} else if (in_msg.Type == CoherenceRequestType:GETX) {
- trigger(Event:GETX, in_msg.Address);
+ trigger(Event:GETX, in_msg.addr, tbe);
} else if (in_msg.Type == CoherenceRequestType:PUTX) {
- if (directory[in_msg.Address].Owner.isElement(in_msg.Requestor)) {
- trigger(Event:PUTX, in_msg.Address);
+ if (getDirectoryEntry(in_msg.addr).Owner.isElement(in_msg.Requestor)) {
+ trigger(Event:PUTX, in_msg.addr, tbe);
} else {
- trigger(Event:PUTX_NotOwner, in_msg.Address);
+ trigger(Event:PUTX_NotOwner, in_msg.addr, tbe);
}
- } else if (in_msg.Type == CoherenceRequestType:PUTO) {
- trigger(Event:PUTO, in_msg.Address);
} else {
error("Invalid message");
}
}
}
- in_port(unblockNetwork_in, ResponseMsg, unblockToDir) {
- if (unblockNetwork_in.isReady()) {
- peek(unblockNetwork_in, ResponseMsg) {
- if (in_msg.Type == CoherenceResponseType:UNBLOCK) {
- trigger(Event:Unblock, in_msg.Address);
+//added by SS
+ // off-chip memory request/response is done
+ in_port(memQueue_in, MemoryMsg, responseFromMemory) {
+ if (memQueue_in.isReady(clockEdge())) {
+ peek(memQueue_in, MemoryMsg) {
+ TBE tbe := TBEs[in_msg.addr];
+ if (in_msg.Type == MemoryRequestType:MEMORY_READ) {
+ trigger(Event:Memory_Data, in_msg.addr, tbe);
+ } else if (in_msg.Type == MemoryRequestType:MEMORY_WB) {
+ trigger(Event:Memory_Ack, in_msg.addr, tbe);
} else {
+ DPRINTF(RubySlicc,"%s\n", in_msg.Type);
error("Invalid message");
}
}
}
}
-
-
// Actions
action(a_sendWriteBackAck, "a", desc="Send writeback ack to requestor") {
peek(requestQueue_in, RequestMsg) {
- enqueue(forwardNetwork_out, RequestMsg, latency="DIRECTORY_LATENCY") {
- out_msg.Address := address;
+ enqueue(forwardNetwork_out, RequestMsg, directory_latency) {
+ out_msg.addr := address;
out_msg.Type := CoherenceRequestType:WB_ACK;
out_msg.Requestor := in_msg.Requestor;
out_msg.Destination.add(in_msg.Requestor);
}
}
+ action(l_sendWriteBackAck, "la", desc="Send writeback ack to requestor") {
+ peek(memQueue_in, MemoryMsg) {
+ enqueue(forwardNetwork_out, RequestMsg, 1) {
+ out_msg.addr := address;
+ out_msg.Type := CoherenceRequestType:WB_ACK;
+ out_msg.Requestor := in_msg.OriginalRequestorMachId;
+ out_msg.Destination.add(in_msg.OriginalRequestorMachId);
+ out_msg.MessageSize := MessageSizeType:Writeback_Control;
+ }
+ }
+ }
+
action(b_sendWriteBackNack, "b", desc="Send writeback nack to requestor") {
peek(requestQueue_in, RequestMsg) {
- enqueue(forwardNetwork_out, RequestMsg, latency="DIRECTORY_LATENCY") {
- out_msg.Address := address;
+ enqueue(forwardNetwork_out, RequestMsg, directory_latency) {
+ out_msg.addr := address;
out_msg.Type := CoherenceRequestType:WB_NACK;
out_msg.Requestor := in_msg.Requestor;
out_msg.Destination.add(in_msg.Requestor);
}
action(c_clearOwner, "c", desc="Clear the owner field") {
- directory[address].Owner.clear();
+ getDirectoryEntry(address).Owner.clear();
}
action(d_sendData, "d", desc="Send data to requestor") {
- peek(requestQueue_in, RequestMsg) {
- enqueue(responseNetwork_out, ResponseMsg, latency="MEMORY_LATENCY") {
- out_msg.Address := address;
+ peek(memQueue_in, MemoryMsg) {
+ enqueue(responseNetwork_out, ResponseMsg, 1) {
+ out_msg.addr := address;
+ out_msg.Type := CoherenceResponseType:DATA;
+ out_msg.Sender := machineID;
+ out_msg.Destination.add(in_msg.OriginalRequestorMachId);
+ out_msg.DataBlk := in_msg.DataBlk;
+ out_msg.MessageSize := MessageSizeType:Response_Data;
+ }
+ }
+ }
- if (in_msg.Type == CoherenceRequestType:GETS && directory[address].Sharers.count() == 0) {
- // out_msg.Type := CoherenceResponseType:DATA_EXCLUSIVE_CLEAN;
- out_msg.Type := CoherenceResponseType:DATA;
- } else {
- out_msg.Type := CoherenceResponseType:DATA;
- }
+ action(dr_sendDMAData, "dr", desc="Send Data to DMA controller from directory") {
+ peek(memQueue_in, MemoryMsg) {
+ enqueue(dmaResponseNetwork_out, DMAResponseMsg, 1) {
+ assert(is_valid(tbe));
+ out_msg.PhysicalAddress := address;
+ out_msg.LineAddress := address;
+ out_msg.Type := DMAResponseType:DATA;
+ out_msg.DataBlk := in_msg.DataBlk; // we send the entire data block and rely on the dma controller to split it up if need be
+ out_msg.Destination.add(tbe.DmaRequestor);
+ out_msg.MessageSize := MessageSizeType:Response_Data;
+ }
+ }
+ }
- out_msg.Sender := machineID;
- out_msg.Destination.add(in_msg.Requestor);
- out_msg.DataBlk := directory[in_msg.Address].DataBlk;
- out_msg.Dirty := false; // By definition, the block is now clean
- out_msg.Acks := directory[address].Sharers.count();
- if (directory[address].Sharers.isElement(in_msg.Requestor)) {
- out_msg.Acks := out_msg.Acks - 1;
- }
+
+
+ action(drp_sendDMAData, "drp", desc="Send Data to DMA controller from incoming PUTX") {
+ peek(requestQueue_in, RequestMsg) {
+ enqueue(dmaResponseNetwork_out, DMAResponseMsg, 1) {
+ assert(is_valid(tbe));
+ out_msg.PhysicalAddress := address;
+ out_msg.LineAddress := address;
+ out_msg.Type := DMAResponseType:DATA;
+
+ // we send the entire data block and rely on the dma controller
+ // to split it up if need be
+ out_msg.DataBlk := in_msg.DataBlk;
+ out_msg.Destination.add(tbe.DmaRequestor);
out_msg.MessageSize := MessageSizeType:Response_Data;
}
}
}
+ action(da_sendDMAAck, "da", desc="Send Ack to DMA controller") {
+ enqueue(dmaResponseNetwork_out, DMAResponseMsg, 1) {
+ assert(is_valid(tbe));
+ out_msg.PhysicalAddress := address;
+ out_msg.LineAddress := address;
+ out_msg.Type := DMAResponseType:ACK;
+ out_msg.Destination.add(tbe.DmaRequestor);
+ out_msg.MessageSize := MessageSizeType:Writeback_Control;
+ }
+ }
+
action(e_ownerIsRequestor, "e", desc="The owner is now the requestor") {
peek(requestQueue_in, RequestMsg) {
- directory[address].Owner.clear();
- directory[address].Owner.add(in_msg.Requestor);
+ getDirectoryEntry(address).Owner.clear();
+ getDirectoryEntry(address).Owner.add(in_msg.Requestor);
}
}
action(f_forwardRequest, "f", desc="Forward request to owner") {
peek(requestQueue_in, RequestMsg) {
APPEND_TRANSITION_COMMENT("Own: ");
- APPEND_TRANSITION_COMMENT(directory[in_msg.Address].Owner);
+ APPEND_TRANSITION_COMMENT(getDirectoryEntry(in_msg.addr).Owner);
APPEND_TRANSITION_COMMENT("Req: ");
APPEND_TRANSITION_COMMENT(in_msg.Requestor);
- enqueue(forwardNetwork_out, RequestMsg, latency="DIRECTORY_LATENCY") {
- out_msg.Address := address;
+ enqueue(forwardNetwork_out, RequestMsg, directory_latency) {
+ out_msg.addr := address;
out_msg.Type := in_msg.Type;
out_msg.Requestor := in_msg.Requestor;
- out_msg.Destination := directory[in_msg.Address].Owner;
- out_msg.Acks := directory[address].Sharers.count();
- if (directory[address].Sharers.isElement(in_msg.Requestor)) {
- out_msg.Acks := out_msg.Acks - 1;
- }
- out_msg.MessageSize := MessageSizeType:Forwarded_Control;
+ out_msg.Destination := getDirectoryEntry(in_msg.addr).Owner;
+ out_msg.MessageSize := MessageSizeType:Writeback_Control;
}
}
}
+ action(inv_sendCacheInvalidate, "inv", desc="Invalidate a cache block") {
+ peek(dmaRequestQueue_in, DMARequestMsg) {
+ enqueue(forwardNetwork_out, RequestMsg, directory_latency) {
+ out_msg.addr := address;
+ out_msg.Type := CoherenceRequestType:INV;
+ out_msg.Requestor := machineID;
+ out_msg.Destination := getDirectoryEntry(in_msg.PhysicalAddress).Owner;
+ out_msg.MessageSize := MessageSizeType:Writeback_Control;
+ }
+ }
+ }
action(i_popIncomingRequestQueue, "i", desc="Pop incoming request queue") {
- requestQueue_in.dequeue();
+ requestQueue_in.dequeue(clockEdge());
+ }
+
+ action(p_popIncomingDMARequestQueue, "p", desc="Pop incoming DMA queue") {
+ dmaRequestQueue_in.dequeue(clockEdge());
+ }
+
+ action(v_allocateTBE, "v", desc="Allocate TBE") {
+ peek(dmaRequestQueue_in, DMARequestMsg) {
+ TBEs.allocate(address);
+ set_tbe(TBEs[address]);
+ tbe.DataBlk := in_msg.DataBlk;
+ tbe.PhysicalAddress := in_msg.PhysicalAddress;
+ tbe.Len := in_msg.Len;
+ tbe.DmaRequestor := in_msg.Requestor;
+ }
+ }
+
+ action(r_allocateTbeForDmaRead, "\r", desc="Allocate TBE for DMA Read") {
+ peek(dmaRequestQueue_in, DMARequestMsg) {
+ TBEs.allocate(address);
+ set_tbe(TBEs[address]);
+ tbe.DmaRequestor := in_msg.Requestor;
+ }
+ }
+
+ action(v_allocateTBEFromRequestNet, "\v", desc="Allocate TBE") {
+ peek(requestQueue_in, RequestMsg) {
+ TBEs.allocate(address);
+ set_tbe(TBEs[address]);
+ tbe.DataBlk := in_msg.DataBlk;
+ }
+ }
+
+ action(w_deallocateTBE, "w", desc="Deallocate TBE") {
+ TBEs.deallocate(address);
+ unset_tbe();
+ }
+
+ action(z_recycleRequestQueue, "z", desc="recycle request queue") {
+ requestQueue_in.recycle(clockEdge(), cyclesToTicks(recycle_latency));
}
- action(j_popIncomingUnblockQueue, "j", desc="Pop incoming unblock queue") {
- unblockNetwork_in.dequeue();
+ action(y_recycleDMARequestQueue, "y", desc="recycle dma request queue") {
+ dmaRequestQueue_in.recycle(clockEdge(), cyclesToTicks(recycle_latency));
}
- action(l_writeDataToMemory, "l", desc="Write PUTX/PUTO data to memory") {
- // peek(unblockNetwork_in, ResponseMsg) {
+
+ action(qf_queueMemoryFetchRequest, "qf", desc="Queue off-chip fetch request") {
peek(requestQueue_in, RequestMsg) {
- // assert(in_msg.Dirty);
- // assert(in_msg.MessageSize == MessageSizeType:Writeback_Data);
- directory[in_msg.Address].DataBlk := in_msg.DataBlk;
- DEBUG_EXPR(in_msg.Address);
- DEBUG_EXPR(in_msg.DataBlk);
+ queueMemoryRead(in_msg.Requestor, address, to_memory_controller_latency);
+ }
+ }
+
+ action(qf_queueMemoryFetchRequestDMA, "qfd", desc="Queue off-chip fetch request") {
+ peek(dmaRequestQueue_in, DMARequestMsg) {
+ queueMemoryRead(in_msg.Requestor, address, to_memory_controller_latency);
}
}
+ action(qw_queueMemoryWBRequest_partial, "qwp", desc="Queue off-chip writeback request") {
+ peek(dmaRequestQueue_in, DMARequestMsg) {
+ queueMemoryWritePartial(in_msg.Requestor, address,
+ to_memory_controller_latency, in_msg.DataBlk,
+ in_msg.Len);
+ }
+ }
+ action(qw_queueMemoryWBRequest_partialTBE, "qwt", desc="Queue off-chip writeback request") {
+ peek(requestQueue_in, RequestMsg) {
+ queueMemoryWritePartial(in_msg.Requestor, address,
+ to_memory_controller_latency, tbe.DataBlk,
+ tbe.Len);
+ }
+ }
+
+ action(l_queueMemoryWBRequest, "lq", desc="Write PUTX data to memory") {
+ peek(requestQueue_in, RequestMsg) {
+ queueMemoryWrite(in_msg.Requestor, address, to_memory_controller_latency,
+ in_msg.DataBlk);
+ }
+ }
+
+ action(l_popMemQueue, "q", desc="Pop off-chip request queue") {
+ memQueue_in.dequeue(clockEdge());
+ }
// TRANSITIONS
+ transition({M_DRD, M_DWR, M_DWRI, M_DRDI}, GETX) {
+ z_recycleRequestQueue;
+ }
- transition(I, GETX, M) {
- d_sendData;
+ transition({IM, MI, ID, ID_W}, {GETX, GETS, PUTX, PUTX_NotOwner} ) {
+ z_recycleRequestQueue;
+ }
+
+ transition({IM, MI, ID, ID_W}, {DMA_READ, DMA_WRITE} ) {
+ y_recycleDMARequestQueue;
+ }
+
+
+ transition(I, GETX, IM) {
+ //d_sendData;
+ v_allocateTBEFromRequestNet;
+ qf_queueMemoryFetchRequest;
e_ownerIsRequestor;
i_popIncomingRequestQueue;
}
+ transition(IM, Memory_Data, M) {
+ d_sendData;
+ //e_ownerIsRequestor;
+ w_deallocateTBE;
+ l_popMemQueue;
+ }
+
+
+ transition(I, DMA_READ, ID) {
+ //dr_sendDMAData;
+ r_allocateTbeForDmaRead;
+ qf_queueMemoryFetchRequestDMA;
+ p_popIncomingDMARequestQueue;
+ }
+
+ transition(ID, Memory_Data, I) {
+ dr_sendDMAData;
+ //p_popIncomingDMARequestQueue;
+ w_deallocateTBE;
+ l_popMemQueue;
+ }
+
+
+
+ transition(I, DMA_WRITE, ID_W) {
+ v_allocateTBE;
+ qw_queueMemoryWBRequest_partial;
+ p_popIncomingDMARequestQueue;
+ }
+
+ transition(ID_W, Memory_Ack, I) {
+ da_sendDMAAck;
+ w_deallocateTBE;
+ l_popMemQueue;
+ }
+
+ transition(M, DMA_READ, M_DRD) {
+ v_allocateTBE;
+ inv_sendCacheInvalidate;
+ p_popIncomingDMARequestQueue;
+ }
+
+ transition(M_DRD, PUTX, M_DRDI) {
+ drp_sendDMAData;
+ c_clearOwner;
+ l_queueMemoryWBRequest;
+ i_popIncomingRequestQueue;
+ }
+
+ transition(M_DRDI, Memory_Ack, I) {
+ l_sendWriteBackAck;
+ w_deallocateTBE;
+ l_popMemQueue;
+ }
+
+ transition(M, DMA_WRITE, M_DWR) {
+ v_allocateTBE;
+ inv_sendCacheInvalidate;
+ p_popIncomingDMARequestQueue;
+ }
+
+ transition(M_DWR, PUTX, M_DWRI) {
+ qw_queueMemoryWBRequest_partialTBE;
+ c_clearOwner;
+ i_popIncomingRequestQueue;
+ }
+
+ transition(M_DWRI, Memory_Ack, I) {
+ l_sendWriteBackAck;
+ da_sendDMAAck;
+ w_deallocateTBE;
+ l_popMemQueue;
+ }
transition(M, GETX, M) {
f_forwardRequest;
i_popIncomingRequestQueue;
}
- // transition(M, PUTX, MI) {
- transition(M, PUTX, I) {
+ transition(M, PUTX, MI) {
c_clearOwner;
- l_writeDataToMemory;
- a_sendWriteBackAck;
+ v_allocateTBEFromRequestNet;
+ l_queueMemoryWBRequest;
i_popIncomingRequestQueue;
}
+ transition(MI, Memory_Ack, I) {
+ l_sendWriteBackAck;
+ w_deallocateTBE;
+ l_popMemQueue;
+ }
+
transition(M, PUTX_NotOwner, M) {
b_sendWriteBackNack;
i_popIncomingRequestQueue;
b_sendWriteBackNack;
i_popIncomingRequestQueue;
}
-
-
- transition(MI, Unblock, M) {
- j_popIncomingUnblockQueue;
- }
-
}
projects / gem5.git / blobdiff