board/common: add fabric mode LOOPBACK

613b5640 · Grzegorz Daniluk · deee26ae · 613b5640 · 613b5640
Commit 613b5640 authored Nov 15, 2018 by Grzegorz Daniluk
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wr_board_pkg.vhd board/common/wr_board_pkg.vhd +1 -1

xwrc_board_common.vhd board/common/xwrc_board_common.vhd +17 -0

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--- a/board/common/wr_board_pkg.vhd
+++ b/board/common/wr_board_pkg.vhd
@@ -42,7 +42,7 @@ use work.streamers_pkg.all;

 package wr_board_pkg is

-  type t_board_fabric_iface is (PLAIN, STREAMERS, ETHERBONE, always_last_invalid);
+  type t_board_fabric_iface is (PLAIN, STREAMERS, ETHERBONE, LOOPBACK, always_last_invalid);

  -- TODO: using these default paths requires absolute path. If relative path is used,
  --       they work only for reference designs by chance. Once we figure out how to

--- a/board/common/xwrc_board_common.vhd
+++ b/board/common/xwrc_board_common.vhd
@@ -566,6 +566,23 @@ begin  -- architecture struct

  end generate gen_etherbone;

+  gen_loopback : if (g_fabric_iface = LOOPBACK) generate
+
+    cmp_wrf_loopback : xwrf_loopback
+      generic map(
+        g_interface_mode        => PIPELINED,
+        g_address_granularity   => WORD)
+      port map(
+        clk_sys_i => clk_sys_i,
+        rst_n_i   => rst_n_i,
+        wrf_snk_i => wrf_src_out,
+        wrf_snk_o => wrf_src_in,
+        wrf_src_o => wrf_snk_in,
+        wrf_src_i => wrf_snk_out,
+        wb_i      => aux_master_out,
+        wb_o      => aux_master_in);
+  end generate gen_loopback;
+
  gen_wr_fabric : if (g_fabric_iface = PLAIN) generate

    wrf_src_o <= wrf_src_out;