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//
// Copyright 2013 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: LGPL-3.0-or-later
//
module data_swapper_64 (
input wire clk,
input wire [2:0] swap_lanes,
input wire [63:0] i_tdata,
input wire i_tlast,
input wire i_tvalid,
output wire i_tready,
output wire [63:0] o_tdata,
output wire o_tlast,
output wire o_tvalid,
input wire o_tready
);
localparam SWAP_32B = 3'b100;
localparam SWAP_16B = 3'b010;
localparam SWAP_8B = 3'b001;
wire [63:0] data_p1, data_p2;
assign data_p1 = (|(swap_lanes & SWAP_32B)) ? { i_tdata[31:0], i_tdata[63:32] } : i_tdata;
assign data_p2 = (|(swap_lanes & SWAP_16B)) ? { data_p1[47:32], data_p1[63:48], data_p1[15:0], data_p1[31:16] } : data_p1;
assign o_tdata = (|(swap_lanes & SWAP_8B)) ? { data_p2[55:48], data_p2[63:56], data_p2[39:32], data_p2[47:40],
data_p2[23:16], data_p2[31:24], data_p2[7:0], data_p2[15:8] } : data_p2;
assign i_tready = o_tready;
assign o_tvalid = i_tvalid;
assign o_tlast = i_tlast;
endmodule // data_swapper_64
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