diplomacy: print out bus widths on edges in agent graph

src/main/scala/diplomacy/LazyModule.scala

@@ -62,7 +62,7 @@ abstract class LazyModule
 
   private def nodesGraphML(buf: StringBuilder, pad: String) {
     buf ++= s"""${pad}<node id=\"${index}\">\n"""
-    buf ++= s"""${pad}  <data key=\"n\"><y:ShapeNode><y:NodeLabel modelName=\"sides\" modelPosition=\"w\" fontSize=\"10\" borderDistance=\"1.0\" rotationAngle=\"270.0\">${module.name}</y:NodeLabel></y:ShapeNode></data>\n"""
+    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}::${n.index}\"/>\n"""
@@ -72,11 +72,15 @@ abstract class LazyModule
     buf ++= s"""${pad}</node>\n"""
   }
   private def edgesGraphML(buf: StringBuilder, pad: String) {
-    nodes.filter(!_.omitGraphML) foreach { n => n.outputs.filter(!_.omitGraphML).foreach { o =>
+    nodes.filter(!_.omitGraphML) foreach { n => n.outputs.filter(!_._1.omitGraphML).foreach { case (o, l) =>
       buf ++= pad
       buf ++= "<edge"
       buf ++= s""" source=\"${index}::${n.index}\""""
-      buf ++= s""" target=\"${o.lazyModule.index}::${o.index}\"><data key=\"e\"><y:PolyLineEdge><y:Arrows source=\"none\" target=\"standard\"/><y:LineStyle color=\"${o.colour}\" type=\"line\" width=\"1.0\"/></y:PolyLineEdge></data></edge>\n"""
+      buf ++= s""" target=\"${o.lazyModule.index}::${o.index}\"><data key=\"e\"><y:PolyLineEdge>"""
+      buf ++= s"""<y:Arrows source=\"none\" target=\"standard\"/>"""
+      buf ++= s"""<y:LineStyle color=\"${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"""
     } }
     children.filter(!_.omitGraphML).foreach { c => c.edgesGraphML(buf, pad) }
   }

src/main/scala/diplomacy/Nodes.scala

@@ -20,6 +20,7 @@ trait InwardNodeImp[DI, UI, EI, BI <: Data]
   // optional methods to track node graph
   def mixI(pu: UI, node: InwardNode[DI, UI, BI]): UI = pu // insert node into parameters
   def getO(pu: UI): Option[BaseNode] = None // most-outward common node
+  def labelI(ei: EI) = ""
 }
 
 // DO = Downwards flowing Parameters generated by the outer side of the node
@@ -34,6 +35,7 @@ trait OutwardNodeImp[DO, UO, EO, BO <: Data]
   // optional methods to track node graph
   def mixO(pd: DO, node: OutwardNode[DO, UO, BO]): DO = pd // insert node into parameters
   def getI(pd: DO): Option[BaseNode] = None // most-inward common node
+  def labelO(eo: EO) = ""
 }
 
 abstract class NodeImp[D, U, EO, EI, B <: Data]
@@ -54,8 +56,8 @@ abstract class BaseNode
 
   protected[diplomacy] def gci: Option[BaseNode] // greatest common inner
   protected[diplomacy] def gco: Option[BaseNode] // greatest common outer
-  protected[diplomacy] def outputs: Seq[BaseNode]
-  protected[diplomacy] def inputs:  Seq[BaseNode]
+  protected[diplomacy] def outputs: Seq[(BaseNode, String)]
+  protected[diplomacy] def inputs:  Seq[(BaseNode, String)]
   protected[diplomacy] def colour:  String
 }
 
@@ -140,8 +142,8 @@ 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 outputs = oPorts.map(_._2)
-  protected[diplomacy] def inputs  = iPorts.map(_._2)
+  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))
 
   private def reqE(o: Int, i: Int) = require(i == o, s"${name} has ${i} inputs and ${o} outputs; they must match${lazyModule.line}")
   protected[diplomacy] lazy val oParams: Seq[DO] = {

src/main/scala/groundtest/Generator.scala

@@ -5,6 +5,7 @@ package groundtest
 object Generator extends util.GeneratorApp {
   val longName = names.topModuleProject + "." + names.configs
   generateFirrtl
+  generateGraphML
   generateTestSuiteMakefrags // TODO: Needed only for legacy make targets
   generateParameterDump // TODO: Needed only for legacy make targets
 }

src/main/scala/uncore/axi4/Nodes.scala

@@ -20,6 +20,9 @@ object AXI4Imp extends NodeImp[AXI4MasterPortParameters, AXI4SlavePortParameters
   }
 
   def colour = "#00ccff" // bluish
+  override def labelI(ei: AXI4EdgeParameters) = (ei.slave.beatBytes * 8).toString
+  override def labelO(eo: AXI4EdgeParameters) = (eo.slave.beatBytes * 8).toString
+
   def connect(bo: => AXI4Bundle, bi: => AXI4Bundle, ei: => AXI4EdgeParameters)(implicit sourceInfo: SourceInfo): (Option[LazyModule], () => Unit) = {
     (None, () => { bi <> bo })
   }

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

@@ -62,6 +62,9 @@ object IntImp extends NodeImp[IntSourcePortParameters, IntSinkPortParameters, In
   }
 
   def colour = "#0000ff" // blue
+  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
+
   def connect(bo: => Vec[Bool], bi: => Vec[Bool], ei: => IntEdge)(implicit sourceInfo: SourceInfo): (Option[LazyModule], () => Unit) = {
     (None, () => {
       // Cannot use bulk connect, because the widths could differ

src/main/scala/uncore/tilelink2/Nodes.scala

@@ -25,6 +25,9 @@ object TLImp extends NodeImp[TLClientPortParameters, TLManagerPortParameters, TL
   var combinationalCheck = false
 
   def colour = "#000000" // black
+  override def labelI(ei: TLEdgeIn)  = (ei.manager.beatBytes * 8).toString
+  override def labelO(eo: TLEdgeOut) = (eo.manager.beatBytes * 8).toString
+
   def connect(bo: => TLBundle, bi: => TLBundle, ei: => TLEdgeIn)(implicit sourceInfo: SourceInfo): (Option[LazyModule], () => Unit) = {
     val monitor = if (emitMonitors) {
       Some(LazyModule(new TLMonitor(() => new TLBundleSnoop(bo.params), () => ei, sourceInfo)))
@@ -159,6 +162,9 @@ object TLAsyncImp extends NodeImp[TLAsyncClientPortParameters, TLAsyncManagerPor
   }
 
   def colour = "#ff0000" // red
+  override def labelI(ei: TLAsyncEdgeParameters) = ei.manager.depth.toString
+  override def labelO(eo: TLAsyncEdgeParameters) = eo.manager.depth.toString
+
   def connect(bo: => TLAsyncBundle, bi: => TLAsyncBundle, ei: => TLAsyncEdgeParameters)(implicit sourceInfo: SourceInfo): (Option[LazyModule], () => Unit) = {
     (None, () => { bi <> bo })
   }

src/main/scala/unittest/Generator.scala

@@ -5,6 +5,7 @@ package unittest
 object Generator extends util.GeneratorApp {
   val longName = names.topModuleProject + "." + names.configs
   generateFirrtl
+  generateGraphML
   generateTestSuiteMakefrags // TODO: Needed only for legacy make targets
   generateParameterDump // TODO: Needed only for legacy make targets
 }