core: move elastic buffers between links and phys

jesd204b/core.py

@@ -52,31 +52,34 @@ def __init__(self, phys, jesd_settings, converter_data_width):
             )
 
         links = []
+        link_reset = Signal()
+        self.comb += link_reset.eq(~reduce(and_, [phy.transmitter.init.done for phy in phys]))
         for n, (phy, lane) in enumerate(zip(phys, transport.source.flatten())):
             phy_name = "phy{}".format(n)
             phy_cd = phy_name + "_tx"
 
             # claim the phy
             setattr(self.submodules, phy_name, phy)
 
-            ebuf = ElasticBuffer(len(phy.data), 4, "sys", phy_cd)
+            ebuf = ElasticBuffer(len(phy.data) + len(phy.ctrl), 4, "sys", phy_cd)
             setattr(self.submodules, "ebuf{}".format(n), ebuf)
 
             link = JESD204BLinkTX(len(phy.data), jesd_settings, n)
-            link = ClockDomainsRenamer(phy_cd)(link)
             links.append(link)
             self.comb += [
+                link.reset.eq(link_reset),
                 link.jsync.eq(self.jsync),
                 link.jref.eq(self.jref)
             ]
             self.submodules += link
 
             # connect data
             self.comb += [
-                ebuf.din.eq(lane),
-                link.sink.data.eq(ebuf.dout),
-                phy.data.eq(link.source.data),
-                phy.ctrl.eq(link.source.ctrl)
+                link.sink.data.eq(lane),
+                ebuf.din[:len(phy.data)].eq(link.source.data),
+                ebuf.din[len(phy.data):].eq(link.source.ctrl),
+                phy.data.eq(ebuf.dout[:len(phy.data)]),
+                phy.ctrl.eq(ebuf.dout[len(phy.data):])
             ]
 
             # connect control

jesd204b/link.py

@@ -230,6 +230,7 @@ def __init__(self, data_width,
             )
 
 
+@ResetInserter()
 class JESD204BLinkTX(Module):
     """Link TX layer
     """