// ***************************************************************************
// ***************************************************************************
// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
//
// In this HDL repository, there are many different and unique modules, consisting
// of various HDL (Verilog or VHDL) components. The individual modules are
// developed independently, and may be accompanied by separate and unique license
// terms.
//
// The user should read each of these license terms, and understand the
// freedoms and responsibilities that he or she has by using this source/core.
//
// This core is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE.
//
// Redistribution and use of source or resulting binaries, with or without modification
// of this file, are permitted under one of the following two license terms:
//
//   1. The GNU General Public License version 2 as published by the
//      Free Software Foundation, which can be found in the top level directory
//      of this repository (LICENSE_GPL2), and also online at:
//      <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
//
// OR
//
//   2. An ADI specific BSD license, which can be found in the top level directory
//      of this repository (LICENSE_ADIBSD), and also on-line at:
//      https://github.com/analogdevicesinc/hdl/blob/master/LICENSE_ADIBSD
//      This will allow to generate bit files and not release the source code,
//      as long as it attaches to an ADI device.
//
// ***************************************************************************
// ***************************************************************************

`timescale 1ns/100ps

module src_axi_stream #(

  parameter ID_WIDTH = 3,
  parameter S_AXIS_DATA_WIDTH = 64,
  parameter LENGTH_WIDTH = 24,
  parameter BEATS_PER_BURST_WIDTH = 4
) (
  input s_axis_aclk,
  input s_axis_aresetn,

  input enable,
  output enabled,

  input [ID_WIDTH-1:0] request_id,
  output [ID_WIDTH-1:0] response_id,
  input eot,

  output rewind_req_valid,
  input rewind_req_ready,
  output [ID_WIDTH+3-1:0] rewind_req_data,

  output                             bl_valid,
  input                              bl_ready,
  output [BEATS_PER_BURST_WIDTH-1:0] measured_last_burst_length,

  output block_descr_to_dst,

  output [ID_WIDTH-1:0] source_id,
  output source_eot,

  output s_axis_ready,
  input s_axis_valid,
  input [S_AXIS_DATA_WIDTH-1:0] s_axis_data,
  input [0:0] s_axis_user,
  input s_axis_last,
  output s_axis_xfer_req,

  output fifo_valid,
  output [S_AXIS_DATA_WIDTH-1:0] fifo_data,
  output fifo_last,
  output fifo_partial_burst,

  input req_valid,
  output req_ready,
  input [BEATS_PER_BURST_WIDTH-1:0] req_last_burst_length,
  input req_sync_transfer_start,
  input req_xlast
);

  assign enabled = enable;

  data_mover #(
    .ID_WIDTH(ID_WIDTH),
    .DATA_WIDTH(S_AXIS_DATA_WIDTH),
    .BEATS_PER_BURST_WIDTH(BEATS_PER_BURST_WIDTH),
    .ALLOW_ABORT(1)
  ) i_data_mover (
    .clk(s_axis_aclk),
    .resetn(s_axis_aresetn),

    .xfer_req(s_axis_xfer_req),

    .request_id(request_id),
    .response_id(response_id),
    .eot(eot),

    .rewind_req_valid(rewind_req_valid),
    .rewind_req_ready(rewind_req_ready),
    .rewind_req_data(rewind_req_data),

    .bl_valid(bl_valid),
    .bl_ready(bl_ready),
    .measured_last_burst_length(measured_last_burst_length),

    .block_descr_to_dst(block_descr_to_dst),

    .source_id(source_id),
    .source_eot(source_eot),

    .req_valid(req_valid),
    .req_ready(req_ready),
    .req_last_burst_length(req_last_burst_length),
    .req_sync_transfer_start(req_sync_transfer_start),
    .req_xlast(req_xlast),

    .s_axi_valid(s_axis_valid),
    .s_axi_ready(s_axis_ready),
    .s_axi_data(s_axis_data),
    .s_axi_last(s_axis_last),
    .s_axi_sync(s_axis_user[0]),

    .m_axi_valid(fifo_valid),
    .m_axi_data(fifo_data),
    .m_axi_last(fifo_last),
    .m_axi_partial_burst(fifo_partial_burst));

endmodule