1// 2// Copyright 2011 Ettus Research LLC 3// Copyright 2018 Ettus Research, a National Instruments Company 4// 5// SPDX-License-Identifier: LGPL-3.0-or-later 6// 7 8 9 10module simple_gemac 11 (input clk125, input reset, 12 // GMII 13 output GMII_GTX_CLK, output GMII_TX_EN, output GMII_TX_ER, output [7:0] GMII_TXD, 14 input GMII_RX_CLK, input GMII_RX_DV, input GMII_RX_ER, input [7:0] GMII_RXD, 15 16 // Flow Control Interface 17 input pause_req, input [15:0] pause_time_req, input pause_respect_en, 18 19 // Settings 20 input [47:0] ucast_addr, input [47:0] mcast_addr, 21 input pass_ucast, input pass_mcast, input pass_bcast, input pass_pause, input pass_all, 22 23 // RX Client Interface 24 output rx_clk, output [7:0] rx_data, output rx_valid, output rx_error, output rx_ack, 25 26 // TX Client Interface 27 output tx_clk, input [7:0] tx_data, input tx_valid, input tx_error, output tx_ack, 28 29 output [31:0] debug 30 ); 31 32 localparam SGE_IFG = 8'd12; // 12 should be the absolute minimum 33 34 wire rst_rxclk, rst_txclk; 35 reset_sync reset_sync_tx (.clk(tx_clk),.reset_in(reset),.reset_out(rst_txclk)); 36 reset_sync reset_sync_rx (.clk(rx_clk),.reset_in(reset),.reset_out(rst_rxclk)); 37 38 wire [15:0] pause_quanta_rcvd; 39 wire pause_rcvd, pause_apply, paused; 40 41 simple_gemac_tx simple_gemac_tx 42 (.clk125(clk125),.reset(rst_txclk), 43 .GMII_GTX_CLK(GMII_GTX_CLK), .GMII_TX_EN(GMII_TX_EN), 44 .GMII_TX_ER(GMII_TX_ER), .GMII_TXD(GMII_TXD), 45 .tx_clk(tx_clk), .tx_data(tx_data), .tx_valid(tx_valid), .tx_error(tx_error), .tx_ack(tx_ack), 46 .ifg(SGE_IFG), .mac_addr(ucast_addr), 47 .pause_req(pause_req), .pause_time(pause_time_req), // We request flow control 48 .pause_apply(pause_apply), .paused(paused) // We respect flow control 49 ); 50 51 simple_gemac_rx simple_gemac_rx 52 (.reset(rst_rxclk), 53 .GMII_RX_CLK(GMII_RX_CLK), .GMII_RX_DV(GMII_RX_DV), 54 .GMII_RX_ER(GMII_RX_ER), .GMII_RXD(GMII_RXD), 55 .rx_clk(rx_clk), .rx_data(rx_data), .rx_valid(rx_valid), .rx_error(rx_error), .rx_ack(rx_ack), 56 .ucast_addr(ucast_addr), .mcast_addr(mcast_addr), 57 .pass_ucast(pass_ucast), .pass_mcast(pass_mcast), .pass_bcast(pass_bcast), 58 .pass_pause(pass_pause), .pass_all(pass_all), 59 .pause_quanta_rcvd(pause_quanta_rcvd), .pause_rcvd(pause_rcvd), 60 .debug(debug) 61 ); 62 63 flow_ctrl_tx flow_ctrl_tx 64 (.rst(rst_txclk), .tx_clk(tx_clk), 65 .tx_pause_en(pause_respect_en), 66 .pause_quanta(pause_quanta_rcvd), // 16 bit value 67 .pause_quanta_val(pause_rcvd), 68 .pause_apply(pause_apply), 69 .paused(paused) 70 ); 71 72endmodule // simple_gemac 73