From b6d26e90f844cb92fd8029ac9b1975ffb5dee2fc Mon Sep 17 00:00:00 2001
From: Andrew Waterman <waterman@cs.berkeley.edu>
Date: Thu, 26 May 2016 15:59:42 -0700
Subject: [PATCH] Add generic TileLink width adapter

---
 uncore/src/main/scala/converters.scala | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/uncore/src/main/scala/converters.scala b/uncore/src/main/scala/converters.scala
index 129835d1..167bebb7 100644
--- a/uncore/src/main/scala/converters.scala
+++ b/uncore/src/main/scala/converters.scala
@@ -747,6 +747,24 @@ class TileLinkIONastiIOConverter(implicit p: Parameters) extends TLModule()(p)
     io.nasti.b.ready, io.nasti.r.ready)
 }
 
+object TileLinkWidthAdapter {
+  def apply(in: ClientUncachedTileLinkIO, out: ClientUncachedTileLinkIO)(implicit p: Parameters): Unit = {
+    require(out.tlDataBits * out.tlDataBeats == in.tlDataBits * in.tlDataBeats)
+
+    if (out.tlDataBits > in.tlDataBits) {
+      val widener = Module(new TileLinkIOWidener(in.p(TLId), out.p(TLId)))
+      widener.io.in <> in
+      out <> widener.io.out
+    } else if (out.tlDataBits < in.tlDataBits) {
+      val narrower = Module(new TileLinkIOWidener(in.p(TLId), out.p(TLId)))
+      narrower.io.in <> in
+      out <> narrower.io.out
+    } else {
+      out <> in
+    }
+  }
+}
+
 class TileLinkIOWidener(innerTLId: String, outerTLId: String)
     (implicit p: Parameters) extends TLModule()(p) {