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// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2017 by John Stevenson.
// SPDX-License-Identifier: CC0-1.0
package pkg;
typedef logic [31:0] unique_id_t;
typedef struct packed {
unique_id_t foo;
} inner_thing_t;
typedef struct packed {
inner_thing_t bar;
inner_thing_t baz;
} outer_thing_t;
endpackage
import pkg::*;
interface the_intf
#(parameter M=5);
outer_thing_t [M-1:0] things;
logic valid;
modport i (
output things,
output valid);
modport t (
input things,
input valid);
endinterface
module ThingMuxOH
#(
parameter NTHINGS = 1,
parameter M = 5 )
(
input logic [NTHINGS-1:0] select_oh,
the_intf.t things_in [NTHINGS-1:0],
the_intf.i thing_out
);
assign thing_out.valid = things_in[0].valid;
endmodule
module ThingMuxShort
#(
parameter NTHINGS = 1,
parameter M = 5 )
(
input logic [NTHINGS-1:0] select_oh,
the_intf.t things_in [NTHINGS],
the_intf.i thing_out
);
assign thing_out.valid = things_in[0].valid;
endmodule
module Thinker
#(
parameter M = 5,
parameter N = 2)
(
input logic clk,
input logic reset,
input unique_id_t uids[0:N-1],
the_intf.t thing_inp,
the_intf.i thing_out
);
the_intf #(.M(M)) curr_things [N-1:0] ();
the_intf #(.M(M)) prev_things [N-1:0] ();
the_intf #(.M(M)) s_things [N] ();
the_intf #(.M(M)) curr_thing ();
the_intf #(.M(M)) prev_thing ();
the_intf #(.M(M)) s_thing ();
logic [N-1:0] select_oh;
// 1st mux:
ThingMuxOH #(
.NTHINGS ( N ),
.M ( M ))
curr_thing_mux(
.select_oh( select_oh ),
.things_in( curr_things ),
.thing_out( curr_thing ));
// 2nd mux, comment this out and no problem:
ThingMuxOH #(
.NTHINGS ( N ),
.M ( M ))
prev_thing_mux(
.select_oh( select_oh ),
.things_in( prev_things ),
.thing_out( prev_thing ));
// 3rd mux, using short array nomenclature:
ThingMuxShort #(
.NTHINGS ( N ),
.M ( M ))
s_thing_mux(
.select_oh( select_oh ),
.things_in( s_things ),
.thing_out( s_thing ));
endmodule
module t
(
input logic clk,
input logic reset
);
localparam M = 5;
localparam N = 2;
unique_id_t uids[0:N-1];
the_intf #(.M(M)) thing_inp();
the_intf #(.M(M)) thing_out();
Thinker #(
.M ( M ),
.N ( N ))
thinker(
.clk ( clk ),
.reset ( reset ),
.uids ( uids ),
.thing_inp( thing_inp ),
.thing_out( thing_out ));
// Previously there was a problem in V3Inst if non-default parameters was used
localparam K = 2;
the_intf #(.M(K)) thing_inp2();
the_intf #(.M(K)) thing_out2();
Thinker #(
.M ( K ),
.N ( N ))
thinker2(
.clk ( clk ),
.reset ( reset ),
.uids ( uids ),
.thing_inp( thing_inp2 ),
.thing_out( thing_out2 ));
endmodule
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