From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Mon, 18 Nov 2019 07:51:44 +0000 (+0100)
Subject: soc/interconnect/packet/Depacketizer: another simplifcation pass
X-Git-Tag: 24jan2021_ls180~850
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1efb18f1ea5ffe07f0681c2bdbc71fb38291da3b;p=litex.git

soc/interconnect/packet/Depacketizer: another simplifcation pass
---

diff --git a/litex/soc/interconnect/packet.py b/litex/soc/interconnect/packet.py
index 89bd1955..7ac82027 100644
--- a/litex/soc/interconnect/packet.py
+++ b/litex/soc/interconnect/packet.py
@@ -338,17 +338,20 @@ class Depacketizer(Module):
         )
         self.sync += If(sink.ready, sink_d.eq(sink))
         fsm.act("UNALIGNED-DATA-COPY",
-            source.valid.eq((sink.valid & ~fsm_from_idle) | sink_d.last),
+            source.valid.eq(sink.valid | sink_d.last),
             source.last.eq(sink.last | sink_d.last),
-            sink.ready.eq(source.ready | fsm_from_idle),
-            If(sink.valid & sink.ready,
-                NextValue(fsm_from_idle, 0),
-                If(fsm_from_idle,
+            sink.ready.eq(source.ready),
+            source.data.eq(sink_d.data[header_leftover*8:]),
+            source.data[min((bytes_per_clk-header_leftover)*8, data_width-1):].eq(sink.data),
+            If(fsm_from_idle,
+                source.valid.eq(sink_d.last),
+                sink.ready.eq(1),
+                If(sink.valid,
+                    NextValue(fsm_from_idle, 0),
                     sr_shift_leftover.eq(1),
-                ).Else(
-                    source.data.eq(sink_d.data[header_leftover*8:]),
-                    source.data[min((bytes_per_clk-header_leftover)*8, data_width-1):].eq(sink.data)
-                ),
+                )
+            ),
+            If(source.valid & source.ready,
                 If(source.last,
                     NextState("IDLE")
                 )