Merge pull request #682 from ucb-bar/jchang

Add hooks to print debug information into the graphml file

src/main/scala/diplomacy/LazyModule.scala

@@ -62,13 +62,14 @@ abstract class LazyModule()(implicit val p: Parameters)
     bindings.reverse.foreach { f => f () }
   }
 
-  def omitGraphML = nodes.isEmpty && children.isEmpty
+  def omitGraphML: Boolean = !nodes.exists(!_.omitGraphML) && !children.exists(!_.omitGraphML)
   lazy val graphML: String = parent.map(_.graphML).getOrElse {
     val buf = new StringBuilder
     buf ++= "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
     buf ++= "<graphml xmlns=\"http://graphml.graphdrawing.org/xmlns\" xmlns:y=\"http://www.yworks.com/xml/graphml\">\n"
     buf ++= "  <key for=\"node\" id=\"n\" yfiles.type=\"nodegraphics\"/>\n"
     buf ++= "  <key for=\"edge\" id=\"e\" yfiles.type=\"edgegraphics\"/>\n"
+    buf ++= "  <key for=\"node\" id=\"d\" attr.name=\"NodeDebugString\" attr.type=\"string\"/>\n"
     buf ++= "  <graph id=\"G\" edgedefault=\"directed\">\n"
     nodesGraphML(buf, "    ")
     edgesGraphML(buf, "    ")
@@ -84,7 +85,9 @@ abstract class LazyModule()(implicit val p: Parameters)
     buf ++= s"""${pad}  <data key=\"n\"><y:ShapeNode><y:NodeLabel modelName=\"sides\" modelPosition=\"w\" rotationAngle=\"270.0\">${module.instanceName}</y:NodeLabel></y:ShapeNode></data>\n"""
     buf ++= s"""${pad}  <graph id=\"${index}::\" edgedefault=\"directed\">\n"""
     nodes.filter(!_.omitGraphML).foreach { n =>
-      buf ++= s"""${pad}    <node id=\"${index}::${n.index}\"/>\n"""
+      buf ++= s"""${pad}    <node id=\"${index}::${n.index}\">\n"""
+      buf ++= s"""${pad}      <data key=\"d\"><y:ShapeNode><y:Shape type="ellipse"/></y:ShapeNode>${n.nodedebugstring}</data>\n"""
+      buf ++= s"""${pad}    </node>\n"""
     }
     children.filter(!_.omitGraphML).foreach { _.nodesGraphML(buf, pad + "    ") }
     buf ++= s"""${pad}  </graph>\n"""
@@ -94,9 +97,19 @@ abstract class LazyModule()(implicit val p: Parameters)
     nodes.filter(!_.omitGraphML) foreach { n => n.outputs.filter(!_._1.omitGraphML).foreach { case (o, l) =>
       buf ++= pad
       buf ++= "<edge"
+      if (o.reverse) {
+        buf ++= s""" target=\"${index}::${n.index}\""""
+        buf ++= s""" source=\"${o.lazyModule.index}::${o.index}\">"""
+      } else {
         buf ++= s""" source=\"${index}::${n.index}\""""
-      buf ++= s""" target=\"${o.lazyModule.index}::${o.index}\"><data key=\"e\"><y:PolyLineEdge>"""
+        buf ++= s""" target=\"${o.lazyModule.index}::${o.index}\">"""
+      }
+      buf ++= s"""<data key=\"e\"><y:PolyLineEdge>"""
+      if (o.reverse) {
+        buf ++= s"""<y:Arrows source=\"standard\" target=\"none\"/>"""
+      } else {
         buf ++= s"""<y:Arrows source=\"none\" target=\"standard\"/>"""
+      }
       buf ++= s"""<y:LineStyle color=\"${o.colour}\" type=\"line\" width=\"1.0\"/>"""
       buf ++= s"""<y:EdgeLabel modelName=\"centered\" rotationAngle=\"270.0\">${l}</y:EdgeLabel>"""
       buf ++= s"""</y:PolyLineEdge></data></edge>\n"""

src/main/scala/diplomacy/Nodes.scala

@@ -17,6 +17,7 @@ trait InwardNodeImp[DI, UI, EI, BI <: Data]
   def edgeI(pd: DI, pu: UI): EI
   def bundleI(ei: EI): BI
   def colour: String
+  def reverse: Boolean = false
   def connect(bindings: () => Seq[(EI, BI, BI)])(implicit p: Parameters, sourceInfo: SourceInfo): (Option[LazyModule], () => Unit) = {
     (None, () => bindings().foreach { case (_, i, o) => i <> o })
   }
@@ -60,12 +61,14 @@ abstract class BaseNode
   def nodename = getClass.getName.split('.').last
   def name = lazyModule.name + "." + nodename
   def omitGraphML = outputs.isEmpty && inputs.isEmpty
+  lazy val nodedebugstring: String = ""
 
   protected[diplomacy] def gci: Option[BaseNode] // greatest common inner
   protected[diplomacy] def gco: Option[BaseNode] // greatest common outer
   protected[diplomacy] def outputs: Seq[(BaseNode, String)]
   protected[diplomacy] def inputs:  Seq[(BaseNode, String)]
   protected[diplomacy] def colour:  String
+  protected[diplomacy] def reverse: Boolean
 }
 
 case class NodeHandle[DI, UI, BI <: Data, DO, UO, BO <: Data]
@@ -260,6 +263,7 @@ abstract class MixedNode[DI, UI, EI, BI <: Data, DO, UO, EO, BO <: Data](
 
   // meta-data for printing the node graph
   protected[diplomacy] def colour  = inner.colour
+  protected[diplomacy] def reverse = inner.reverse
   protected[diplomacy] def outputs = oPorts.map(_._2) zip edgesOut.map(e => outer.labelO(e))
   protected[diplomacy] def inputs  = iPorts.map(_._2) zip edgesIn .map(e => inner.labelI(e))
 }

src/main/scala/rocket/Tile.scala

@@ -160,7 +160,7 @@ class SyncRocketTile(rtp: RocketTileParams, hartid: Int)(implicit p: Parameters)
   val masterNode = TLOutputNode()
   masterNode :=* rocket.masterNode
 
-  val slaveNode = TLInputNode()
+  val slaveNode = new TLInputNode() { override def reverse = true }
   rocket.slaveNode :*= slaveNode
 
   val intNode = IntInputNode()
@@ -194,7 +194,7 @@ class AsyncRocketTile(rtp: RocketTileParams, hartid: Int)(implicit p: Parameters
   source.node :=* rocket.masterNode
   masterNode :=* source.node
 
-  val slaveNode = TLAsyncInputNode()
+  val slaveNode = new TLAsyncInputNode() { override def reverse = true }
   val sink = LazyModule(new TLAsyncCrossingSink)
   rocket.slaveNode :*= sink.node
   sink.node :*= slaveNode
@@ -226,7 +226,7 @@ class RationalRocketTile(rtp: RocketTileParams, hartid: Int)(implicit p: Paramet
   source.node :=* rocket.masterNode
   masterNode :=* source.node
 
-  val slaveNode = TLRationalInputNode()
+  val slaveNode = new TLRationalInputNode() { override def reverse = true }
   val sink = LazyModule(new TLRationalCrossingSink(util.SlowToFast))
   rocket.slaveNode :*= sink.node
   sink.node :*= slaveNode

src/main/scala/uncore/tilelink2/IntNodes.scala

@@ -70,6 +70,7 @@ object IntImp extends NodeImp[IntSourcePortParameters, IntSinkPortParameters, In
   def bundleI(ei: IntEdge): Vec[Bool] = Vec(ei.source.num, Bool())
 
   def colour = "#0000ff" // blue
+  override def reverse = true
   override def labelI(ei: IntEdge) = ei.source.sources.map(_.range.size).sum.toString
   override def labelO(eo: IntEdge) = eo.source.sources.map(_.range.size).sum.toString