@Override
public void visit(OutBuf outBuf) {
if (!findUnknownGateDepthOnInputs(outBuf)) {
preFilter(outBuf);
traverse(outBuf);
final Integer currentGateDepth =
new Integer(getMaxInputGateDepth(outBuf) + outBuf.getExitGateDepth());
for (Port port : outBuf.getPorts()) {
final Bus moduleBus = port.getPeer();
if (moduleBus != null) {
exitToGateDepthMap.put(moduleBus.getOwner(), currentGateDepth);
}
}
if (currentGateDepth.intValue() >= taskMaxGateDepth) {
taskMaxGateDepth = currentGateDepth.intValue();
}
if (_schedule.db)
_schedule.ln(
_schedule.GDA, outBuf + ", current gate depth: " + currentGateDepth.intValue());
postFilter(outBuf);
}
}
@SuppressWarnings("unchecked")
@Override
public Loop caseBlockWhile(BlockWhile blockWhile) {
// Initialize members
Map<Var, Port> inputs = new HashMap<Var, Port>();
Map<Var, Bus> outputs = new HashMap<Var, Bus>();
Map<Bus, Var> feedbackBusVar = new HashMap<Bus, Var>();
Map<Bus, Var> completeBusVar = new HashMap<Bus, Var>();
// -- Decision
// Construct decision from the block while condition
Block decisionBlock = null;
Component valueComponent = new ExprToComponent().doSwitch(blockWhile.getCondition());
Map<Var, Port> dBlockDataPorts = null;
if (!(valueComponent instanceof Block)) {
dBlockDataPorts = new HashMap<Var, Port>();
Map<Var, Port> valueDataPorts =
(Map<Var, Port>) blockWhile.getCondition().getAttribute("inputs").getObjectValue();
decisionBlock = new Block(Arrays.asList(valueComponent));
// Propagate DataPorts
ComponentUtil.propagateDataPorts(decisionBlock, dBlockDataPorts, valueDataPorts);
// Propagate DataBuses
for (Bus dataBus : valueComponent.getExit(Exit.DONE).getDataBuses()) {
Bus blockDataBus = decisionBlock.getExit(Exit.DONE).makeDataBus();
Port blockDataBuspeer = blockDataBus.getPeer();
ComponentUtil.connectDataDependency(dataBus, blockDataBuspeer, 0);
}
} else {
decisionBlock = (Block) valueComponent;
dBlockDataPorts =
(Map<Var, Port>) blockWhile.getCondition().getAttribute("inputs").getObjectValue();
}
Component decisionComponent = ComponentUtil.decisionFindConditionComponent(decisionBlock);
// Create decision
Decision decision = new Decision(decisionBlock, decisionComponent);
Debug.depGraphTo(decision, "deicions", "/tmp/decision1.dot", 1);
// Propagate decisionBlockInputs to the decision one
Map<Var, Port> dDataPorts = new HashMap<Var, Port>();
ComponentUtil.propagateDataPorts(decision, dDataPorts, dBlockDataPorts);
// -- Loop Body
// Construct Loop Body Block from the block while blocks
Map<Var, Port> blockDataPorts = new HashMap<Var, Port>();
Map<Var, Bus> blockDataBuses = new HashMap<Var, Bus>();
Module body =
(Module)
new BlocksToBlock(blockDataPorts, blockDataBuses, false)
.doSwitch(blockWhile.getBlocks());
// Loop body (While Body) inputs and outputs
Map<Var, Port> lbDataPorts = new HashMap<Var, Port>();
LoopBody loopBody = new WhileBody(decision, body);
Debug.depGraphTo(loopBody, "loopBody", "/tmp/loopBody.dot", 1);
// Propagate decision and body inputs to the loopBody
// -- Propagate Decision data ports
ComponentUtil.propagateDataPorts(loopBody, lbDataPorts, dDataPorts);
// -- Propagate Body Blocks data ports
ComponentUtil.propagateDataPorts(loopBody, lbDataPorts, blockDataPorts);
// -- Complete Exit
for (Var var : blockDataBuses.keySet()) {
Type type = var.getType();
Bus bus = blockDataBuses.get(var);
// -- Make an complete exit data bus
Bus cBus =
loopBody
.getLoopCompleteExit()
.makeDataBus(var.getName() + "_fb", type.getSizeInBits(), type.isInt());
// -- Connect
Port cBusPeer = cBus.getPeer();
ComponentUtil.connectDataDependency(bus, cBusPeer);
// -- Save it to the feedbackBusVar
completeBusVar.put(cBus, var);
}
// -- FeedBack Exit
for (Var var : blockDataBuses.keySet()) {
Type type = var.getType();
// -- If the input does not exist create one because this is a
// feedback
if (!lbDataPorts.containsKey(var)) {
Port lbPort =
loopBody.makeDataPort(var.getName() + "_fb", type.getSizeInBits(), type.isInt());
lbDataPorts.put(var, lbPort);
}
Bus bus = blockDataBuses.get(var);
// -- Make an feedback exit data bus
Bus fbBus =
loopBody
.getFeedbackExit()
.makeDataBus(var.getName() + "_fb", type.getSizeInBits(), type.isInt());
// -- Connect
Port fbBusPeer = fbBus.getPeer();
ComponentUtil.connectDataDependency(bus, fbBusPeer);
// -- Save it to the feedbackBusVar
feedbackBusVar.put(fbBus, var);
}
// -- From input to Complete Exit dependency
for (Bus bus : completeBusVar.keySet()) {
Var var = completeBusVar.get(bus);
Port port = lbDataPorts.get(var);
// -- Connect it
Port busPeer = bus.getPeer();
Bus portpeer = port.getPeer();
ComponentUtil.connectDataDependency(portpeer, busPeer);
}
// Create Loop
Loop loop = new Loop(loopBody);
// -- Loop inputs comes from decision and body
Set<Var> inVars = new HashSet<Var>();
inVars.addAll(dDataPorts.keySet());
inVars.addAll(lbDataPorts.keySet());
for (Var var : inVars) {
Type type = var.getType();
Port dataPort = loop.makeDataPort(var.getName(), type.getSizeInBits(), type.isInt());
inputs.put(var, dataPort);
}
// -- Init Dependencies
Entry initEntry = loop.getBodyInitEntry();
for (Var var : inputs.keySet()) {
if (feedbackBusVar.containsValue(var)) {
Port lPort = inputs.get(var);
Port lbPort = lbDataPorts.get(var);
Bus lPortPeer = lPort.getPeer();
Dependency dep =
(lbPort == lbPort.getOwner().getGoPort())
? new ControlDependency(lPortPeer)
: new DataDependency(lPortPeer);
initEntry.addDependency(lbPort, dep);
}
}
// -- Feedback Dependencies
Entry fbEntry = loop.getBodyFeedbackEntry();
for (Bus bus : feedbackBusVar.keySet()) {
Var var = feedbackBusVar.get(bus);
Exit lfbExit = loop.getBody().getFeedbackExit();
Port lbPort = lbDataPorts.get(var);
// -- Create a feedback register
Reg fbReg = loop.createDataRegister();
fbReg.setIDLogical("fbReg_" + var.getName());
// fbReg.getDataPort().setIDLogical(var.getName());
// fbReg.getResultBus().setIDLogical(var.getName());
// -- Dependencies
Entry entry = fbReg.makeEntry(lfbExit);
entry.addDependency(fbReg.getDataPort(), new DataDependency(bus));
fbEntry.addDependency(lbPort, new DataDependency(fbReg.getResultBus()));
}
// -- Latch Dependencies
Collection<Dependency> goInitDeps = initEntry.getDependencies(loop.getBody().getGoPort());
Bus initDoneBus = goInitDeps.iterator().next().getLogicalBus();
for (Var var : inVars) {
if (!feedbackBusVar.containsValue(var)) {
Port lPort = inputs.get(var);
Bus lPortPeer = lPort.getPeer();
// -- Create a latch
Latch latch = loop.createDataLatch();
latch.setIDLogical("latched_" + var.getName());
// -- Dependencies
Entry latchEntry = latch.makeEntry(initDoneBus.getOwner());
latch.getDataPort().setIDLogical(var.getName());
// -- Control dependency
latchEntry.addDependency(latch.getEnablePort(), new ControlDependency(initDoneBus));
// -- Data dependency in latch
latchEntry.addDependency(latch.getDataPort(), new DataDependency(lPortPeer));
// -- Data dependency out latch
Bus latchResultBus = latch.getResultBus();
latchResultBus.setIDLogical(var.getName() + "_result");
Port lbPort = lbDataPorts.get(var);
fbEntry.addDependency(lbPort, new DataDependency(latchResultBus));
}
}
// -- Done Dependencies
Entry outbufEntry = loop.getExit(Exit.DONE).getPeer().getEntries().get(0);
for (Bus bus : loopBody.getLoopCompleteExit().getDataBuses()) {
Var var = completeBusVar.get(bus);
Type type = var.getType();
Bus dataBus =
loop.getExit(Exit.DONE).makeDataBus(var.getName(), type.getSizeInBits(), type.isInt());
Port dataBusPeer = dataBus.getPeer();
Dependency dep = new DataDependency(bus);
outbufEntry.addDependency(dataBusPeer, dep);
outputs.put(var, dataBus);
}
// -- Set control dependency
Port lbDonePort = loopBody.getLoopCompleteExit().getDoneBus().getPeer();
Bus lDoneBus = loop.getExit(Exit.DONE).getDoneBus();
Dependency dep = new ControlDependency(lDoneBus);
outbufEntry.addDependency(lbDonePort, dep);
// -- IDSourceInfo
Procedure procedure = EcoreHelper.getContainerOfType(blockWhile, Procedure.class);
IDSourceInfo sinfo = new IDSourceInfo(procedure.getName(), blockWhile.getLineNumber());
loop.setIDSourceInfo(sinfo);
Debug.depGraphTo(loop, "loopBody", "/tmp/loop_new.dot", 1);
// -- Set attributes
blockWhile.setAttribute("inputs", inputs);
blockWhile.setAttribute("outputs", outputs);
return loop;
}
/**
* Utility method for wiring up the reads and writes captured in a frame to appropriate ports and
* buses on a procedure.
*
* @param body DOCUMENT ME!
* @param register DOCUMENT ME!
* @param subFrame DOCUMENT ME!
*/
private void connectRegister(Module body, Register register, ConnectionFrame subFrame) {
// wire all the reads to a new port on the procedure's body
List<Connection> readList = subFrame.getReadConnections(register);
if (!readList.isEmpty()) {
Port resourceRead = body.makeDataPort(Component.SIDEBAND);
Bus resourceReadBus = resourceRead.getPeer();
resourceReadBus.setIDLogical(register.showIDLogical() + "_read");
resourceReadBus.setSize(register.getInitWidth(), Register.isSigned());
recordRead(new RegisterReadConnection(register, resourceRead));
for (Connection readConnections : readList) {
RegisterReadConnection rp = (RegisterReadConnection) readConnections;
rp.getDataPort().setBus(resourceReadBus);
}
}
// wire the writes. a single write goes directly, multiple go through a
// gateway
List<Connection> writeList = subFrame.getWriteConnections(register);
if (!writeList.isEmpty()) {
Exit bodyExit = getSidebandExit(body);
Bus writeEnable = bodyExit.makeDataBus(Component.SIDEBAND);
writeEnable.setIDLogical(register.showIDLogical() + "_enable");
writeEnable.setSize(1, false);
// Port writeEnablePort = writeEnable.getPeer();
Bus writeData = bodyExit.makeDataBus(Component.SIDEBAND);
writeData.setIDLogical(register.showIDLogical() + "_write");
writeData.setSize(register.getInitWidth(), Register.isSigned());
recordWrite(new RegisterWriteConnection(register, writeEnable, writeData));
if (writeList.size() == 1) {
RegisterWriteConnection edp = (RegisterWriteConnection) writeList.get(0);
writeEnable.getPeer().setBus(edp.getEnable());
writeData.getPeer().setBus(edp.getData());
} else {
RegisterGateway regGateway = new RegisterGateway(writeList.size(), register);
writeEnable.getPeer().setBus(regGateway.getGlobalEnableBus());
writeData.getPeer().setBus(regGateway.getGlobalDataBus());
Iterator<Port> gatewayLocalEnablePortIter = regGateway.getLocalEnablePorts().iterator();
Iterator<Port> gatewayLocalDataPortIter = regGateway.getLocalDataPorts().iterator();
// Wires up RegisterGateway's enable ports paired with data
// ports.
int pairCount = 0;
for (Connection connection : writeList) {
RegisterWriteConnection edPair = (RegisterWriteConnection) connection;
edPair.getEnable().setIDLogical(register.showIDLogical() + "_we_" + pairCount);
gatewayLocalEnablePortIter.next().setBus(edPair.getEnable());
edPair.getData().setIDLogical(register.showIDLogical() + "_data_" + pairCount);
gatewayLocalDataPortIter.next().setBus(edPair.getData());
// edPair.getSize().setIDLogical(register.showIDLogical() +
// "_size_" + pairCount);
// ((Port)gatewayLocalSizePortIter.next()).setBus(edPair.getSize());
pairCount++;
}
body.addComponent(regGateway);
}
}
}