//////////////////////////////////////////////////////////////////////
|
//////////////////////////////////////////////////////////////////////
|
//// ////
|
//// ////
|
//// Copyright (C) 2017 Authors and OPENCORES.ORG ////
|
//// Copyright (C) 2017 Authors and OPENCORES.ORG ////
|
//// ////
|
//// ////
|
//// This source file may be used and distributed without ////
|
//// This source file may be used and distributed without ////
|
//// restriction provided that this copyright statement is not ////
|
//// restriction provided that this copyright statement is not ////
|
//// removed from the file and that any derivative work contains ////
|
//// removed from the file and that any derivative work contains ////
|
//// the original copyright notice and the associated disclaimer. ////
|
//// the original copyright notice and the associated disclaimer. ////
|
//// ////
|
//// ////
|
//// This source file is free software; you can redistribute it ////
|
//// This source file is free software; you can redistribute it ////
|
//// and/or modify it under the terms of the GNU Lesser General ////
|
//// and/or modify it under the terms of the GNU Lesser General ////
|
//// Public License as published by the Free Software Foundation; ////
|
//// Public License as published by the Free Software Foundation; ////
|
//// either version 2.1 of the License, or (at your option) any ////
|
//// either version 2.1 of the License, or (at your option) any ////
|
//// later version. ////
|
//// later version. ////
|
//// ////
|
//// ////
|
//// This source is distributed in the hope that it will be ////
|
//// This source is distributed in the hope that it will be ////
|
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
|
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
|
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
|
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
|
//// PURPOSE. See the GNU Lesser General Public License for more ////
|
//// PURPOSE. See the GNU Lesser General Public License for more ////
|
//// details. ////
|
//// details. ////
|
//// ////
|
//// ////
|
//// You should have received a copy of the GNU Lesser General ////
|
//// You should have received a copy of the GNU Lesser General ////
|
//// Public License along with this source; if not, download it ////
|
//// Public License along with this source; if not, download it ////
|
//// from http://www.opencores.org/lgpl.shtml ////
|
//// from http://www.opencores.org/lgpl.shtml ////
|
//// ////
|
//// ////
|
//////////////////////////////////////////////////////////////////////
|
//////////////////////////////////////////////////////////////////////
|
|
|
|
|
module
|
module
|
axis_to_riffa_tx
|
axis_to_riffa_tx
|
#(
|
#(
|
N // RIFFA data bus width in bytes
|
N // RIFFA data bus width in bytes
|
)
|
)
|
(
|
(
|
axis_if axis_in,
|
axis_if axis_in,
|
riffa_chnl_if chnl_bus,
|
riffa_chnl_if chnl_bus,
|
input [31:0] tx_len,
|
input [31:0] tx_len,
|
input [30:0] tx_off,
|
input [30:0] tx_off,
|
input tx_ready,
|
input tx_ready,
|
input tx_last,
|
input tx_last,
|
input clk,
|
input clk,
|
input reset
|
input reset
|
);
|
);
|
|
|
// --------------------------------------------------------------------
|
// --------------------------------------------------------------------
|
//
|
//
|
localparam RW = (N/4); // width of the RIFFA bus in 32 bit words
|
localparam RW = (N/4); // width of the RIFFA bus in 32 bit words
|
|
|
|
|
// --------------------------------------------------------------------
|
// --------------------------------------------------------------------
|
//
|
//
|
wire acked;
|
wire acked;
|
wire [30:0] tx_index;
|
wire [30:0] tx_index;
|
wire tx_done = (tx_index >= tx_len - RW) & tx_ready;
|
// wire tx_done = (tx_index >= tx_len - RW) & tx_ready;
|
|
wire tx_done = (tx_index >= tx_len - RW);
|
|
|
riffa_chn_tx #(.N(N))
|
riffa_chn_tx #(.N(N))
|
riffa_chn_tx_i(.*);
|
riffa_chn_tx_i(.*);
|
|
|
|
|
// --------------------------------------------------------------------
|
// --------------------------------------------------------------------
|
//
|
//
|
assign axis_in.tready = chnl_bus.tx_data_ren & acked;
|
assign axis_in.tready = chnl_bus.tx_data_ren & acked;
|
assign chnl_bus.tx_clk = clk;
|
assign chnl_bus.tx_clk = clk;
|
assign chnl_bus.tx_reset = reset;
|
assign chnl_bus.tx_reset = reset;
|
assign chnl_bus.tx_last = tx_last;
|
assign chnl_bus.tx_last = tx_last;
|
assign chnl_bus.tx_len = tx_len;
|
assign chnl_bus.tx_len = tx_len;
|
assign chnl_bus.tx_off = tx_off;
|
assign chnl_bus.tx_off = tx_off;
|
assign chnl_bus.tx_data_valid = axis_in.tvalid & acked;
|
assign chnl_bus.tx_data_valid = axis_in.tvalid & acked;
|
assign chnl_bus.tx_data = axis_in.tdata;
|
assign chnl_bus.tx_data = axis_in.tdata;
|
|
|
|
|
// --------------------------------------------------------------------
|
// --------------------------------------------------------------------
|
//
|
//
|
endmodule
|
endmodule
|
|
|
|
|
|
|
|
|
|
|