1 files changed, 51 insertions, 0 deletions
diff --git a/fpga/usrp3/lib/axi4s_sv/axi4s.vh b/fpga/usrp3/lib/axi4s_sv/axi4s.vh
new file mode 100644
index 000000000..1a0b80256
--- /dev/null
+++ b/fpga/usrp3/lib/axi4s_sv/axi4s.vh
@@ -0,0 +1,51 @@
+//
+// Copyright 2020 Ettus Research, A National Instruments Brand
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+//
+// Header File: axi4s
+// Description: Macros for use with AXI4S
+//
+
+//-----------------------------------------------------------------------------
+// Unidirectional AXI4-Stream interface
+//-----------------------------------------------------------------------------
+
+// Macro that drives o from i for all fields. Of course ready runs in the
+// counter direction.
+
+`define AXI4S_ASSIGN(O,I) \
+  if (``I.TDATA) ``O.tdata = ``I.tdata;\
+  if (``I.TUSER) ``O.tuser = ``I.tuser;\
+  else           ``O.tuser = 0;\
+  if (``I.TKEEP) ``O.tkeep = ``I.tkeep;\
+  else           ``O.tkeep = '1;\
+  if (``I.TLAST) ``O.tlast = ``I.tlast;\
+  ``O.tvalid = ``I.tvalid;\
+  ``I.tready = ``O.tready;
+
+`define AXI4S_DEBUG_ASSIGN(O,I) \
+  (* mark_debug = "true" *) logic [``I.DATA_WIDTH-1:0]   ``I``_debug_tdata;\
+  (* mark_debug = "true" *) logic [``I.USER_WIDTH-1:0]   ``I``_debug_tuser;\
+  (* mark_debug = "true" *) logic [``I.DATA_WIDTH/8-1:0] ``I``_debug_tkeep;\
+  (* mark_debug = "true" *) logic                        ``I``_debug_tlast;\
+  (* mark_debug = "true" *) logic                        ``I``_debug_tvalid;\
+  (* mark_debug = "true" *) logic                        ``I``_debug_tready;\
+  always_comb begin\
+    if (``I.TDATA) ``I``_debug_tdata = ``I.tdata;\
+    if (``I.TUSER) ``I``_debug_tuser = ``I.tuser;\
+    if (``I.TKEEP) ``I``_debug_tkeep = ``I.tkeep;\
+    if (``I.TLAST) ``I``_debug_tlast = ``I.tlast;\
+    ``I``_debug_tvalid = ``I.tvalid;\
+    ``I``_debug_tready = ``O.tready;\
+  end\
+  always_comb begin\
+    if (``I.TDATA) ``O.tdata = ``I``_debug_tdata;\
+    if (``I.TUSER) ``O.tuser = ``I``_debug_tuser;\
+    else           ``O.tuser = 0;\
+    if (``I.TKEEP) ``O.tkeep = ``I``_debug_tkeep;\
+    else           ``O.tkeep = '1;\
+    if (``I.TLAST) ``O.tlast = ``I``_debug_tlast;\
+    ``O.tvalid = ``I``_debug_tvalid;\
+    ``I.tready = ``I``_debug_tready;\
+  end