From 5ef521f0f6764a437a40f2541232f3fc984577f5 Mon Sep 17 00:00:00 2001
From: morgan <mc@m-labs.hk>
Date: Tue, 14 Jan 2025 12:41:29 +0800
Subject: [PATCH] upconn GW: remove debug buf

---
 src/gateware/cxp_upconn.py | 49 +-------------------------------------
 1 file changed, 1 insertion(+), 48 deletions(-)

diff --git a/src/gateware/cxp_upconn.py b/src/gateware/cxp_upconn.py
index 82ddb85..81d39bb 100644
--- a/src/gateware/cxp_upconn.py
+++ b/src/gateware/cxp_upconn.py
@@ -85,38 +85,6 @@ class SERDES_10bits(Module):
             )
         ]
 
-class Debug_buffer(Module,AutoCSR):
-    def __init__(self, layout):
-        self.sink_stb = Signal()
-        self.sink_ack = Signal()
-        self.sink_data = Signal(8)
-        self.sink_k = Signal()
-
-        # # #
-
-        self.submodules.buf_out = buf_out = stream.SyncFIFO(layout, 512)
-
-        self.sync += [
-            buf_out.sink.stb.eq(self.sink_stb),
-            self.sink_ack.eq(buf_out.sink.ack),
-            buf_out.sink.data.eq(self.sink_data),
-            buf_out.sink.k.eq(self.sink_k),
-        ]
-
-        self.inc = CSR()
-        self.dout_pak = CSRStatus(8)
-        self.kout_pak = CSRStatus()
-        self.dout_valid = CSRStatus()
-
-        self.sync += [
-            # output
-            buf_out.source.ack.eq(self.inc.re),
-            self.dout_pak.status.eq(buf_out.source.data),
-            self.kout_pak.status.eq(buf_out.source.k),
-            self.dout_valid.status.eq(buf_out.source.stb),
-        ]
-
-
 class Transmitter(Module, AutoCSR):
     def __init__(self, pad, sys_clk_freq, debug_sma, pmod_pads):
         self.bitrate2x_enable = Signal()
@@ -129,35 +97,20 @@ class Transmitter(Module, AutoCSR):
 
         self.submodules.cg = cg = ClockGen(sys_clk_freq)
         self.submodules.encoder = encoder = SingleEncoder(True)
-        self.submodules.debug_buf = debug_buf = Debug_buffer(char_layout)
 
         oe = Signal()
         self.sync += [
             If(self.enable,
                 self.sink.ack.eq(0),
-
-                # DEBUG:
-                debug_buf.sink_stb.eq(0),
-
                 If(cg.clk,
                     oe.eq(1),
                     encoder.disp_in.eq(encoder.disp_out),
                     self.sink.ack.eq(1),
                     encoder.d.eq(self.sink.data),
                     encoder.k.eq(self.sink.k),
-
-                    # DEBUG:
-                    If(debug_buf.sink_ack,
-                        debug_buf.sink_stb.eq(1),
-                        debug_buf.sink_data.eq(self.sink.data),
-                        debug_buf.sink_k.eq(self.sink.k),
-                    )
                 )
             ).Else(
-                # DEBUG:
-                debug_buf.sink_stb.eq(0),
-
-                # no backpressure
+                # discard packets until tx is enabled
                 self.sink.ack.eq(1),
                 oe.eq(0),
             )