initial commit for open source NoC IP

rtl/input_port_flit_decoder.sv

@@ -0,0 +1,24 @@
+module input_port_flit_decoder
+  import rvh_noc_pkg::*;
+#(
+  parameter type flit_payload_t = logic[256-1:0]
+  // parameter VC_NUM_IDX_W = 1
+)
+(
+  input  logic              flit_v_i,
+  input  flit_payload_t     flit_i,
+  input  io_port_t          flit_look_ahead_routing_i,
+
+  output flit_dec_t         flit_dec_o
+);
+
+`ifdef USE_QOS_VALUE
+assign flit_dec_o.qos_value = flit_i[QoS_Value_Width-1:0];
+`endif
+assign flit_dec_o.tgt_id    = flit_i[QoS_Value_Width+NodeID_Width-1:QoS_Value_Width];
+assign flit_dec_o.src_id    = flit_i[QoS_Value_Width+NodeID_Width+NodeID_Width-1:QoS_Value_Width+NodeID_Width];
+assign flit_dec_o.txn_id    = flit_i[QoS_Value_Width+NodeID_Width+NodeID_Width+TxnID_Width-1:QoS_Value_Width+NodeID_Width+NodeID_Width];
+
+assign flit_dec_o.look_ahead_routing = flit_look_ahead_routing_i;
+
+endmodule