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223 lines
6.0 KiB
Verilog
223 lines
6.0 KiB
Verilog
// SPDX-License-Identifier: BSD-2-Clause-Views
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/*
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* Copyright (c) 2021-2023 The Regents of the University of California
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*/
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// Language: Verilog 2001
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`resetall
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`timescale 1ns / 1ps
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`default_nettype none
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/*
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* NIC layer 2 ingress processing
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*/
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module mqnic_l2_ingress #
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(
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// Interface configuration
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parameter PFC_ENABLE = 0,
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parameter LFC_ENABLE = PFC_ENABLE,
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parameter MAC_CTRL_ENABLE = 0,
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// Streaming interface configuration
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parameter AXIS_DATA_WIDTH = 256,
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parameter AXIS_KEEP_WIDTH = AXIS_DATA_WIDTH/8,
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parameter AXIS_USER_WIDTH = 1,
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parameter AXIS_USE_READY = 0
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)
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(
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input wire clk,
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input wire rst,
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/*
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* Receive data input
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*/
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input wire [AXIS_DATA_WIDTH-1:0] s_axis_tdata,
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input wire [AXIS_KEEP_WIDTH-1:0] s_axis_tkeep,
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input wire s_axis_tvalid,
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output wire s_axis_tready,
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input wire s_axis_tlast,
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input wire [AXIS_USER_WIDTH-1:0] s_axis_tuser,
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/*
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* Receive data output
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*/
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output wire [AXIS_DATA_WIDTH-1:0] m_axis_tdata,
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output wire [AXIS_KEEP_WIDTH-1:0] m_axis_tkeep,
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output wire m_axis_tvalid,
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input wire m_axis_tready,
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output wire m_axis_tlast,
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output wire [AXIS_USER_WIDTH-1:0] m_axis_tuser,
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/*
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* Flow control
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*/
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input wire rx_lfc_en,
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output wire rx_lfc_req,
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input wire rx_lfc_ack,
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input wire [7:0] rx_pfc_en,
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output wire [7:0] rx_pfc_req,
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input wire [7:0] rx_pfc_ack,
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input wire [9:0] rx_fc_quanta_step,
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input wire rx_fc_quanta_clk_en
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);
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if ((LFC_ENABLE || PFC_ENABLE) && MAC_CTRL_ENABLE) begin : mac_ctrl
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localparam MCF_PARAMS_SIZE = PFC_ENABLE ? 18 : 2;
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wire rx_mcf_valid;
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wire [47:0] rx_mcf_eth_dst;
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wire [47:0] rx_mcf_eth_src;
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wire [15:0] rx_mcf_eth_type;
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wire [15:0] rx_mcf_opcode;
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wire [MCF_PARAMS_SIZE*8-1:0] rx_mcf_params;
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mac_ctrl_rx #(
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.DATA_WIDTH(AXIS_DATA_WIDTH),
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.KEEP_ENABLE(AXIS_KEEP_WIDTH > 1),
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.KEEP_WIDTH(AXIS_KEEP_WIDTH),
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.ID_ENABLE(0),
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.DEST_ENABLE(0),
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.USER_ENABLE(1),
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.USER_WIDTH(AXIS_USER_WIDTH),
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.USE_READY(AXIS_USE_READY),
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.MCF_PARAMS_SIZE(MCF_PARAMS_SIZE)
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)
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mac_ctrl_rx_inst (
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.clk(clk),
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.rst(rst),
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/*
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* AXI stream input
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*/
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.s_axis_tdata(s_axis_tdata),
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.s_axis_tkeep(s_axis_tkeep),
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.s_axis_tvalid(s_axis_tvalid),
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.s_axis_tready(s_axis_tready),
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.s_axis_tlast(s_axis_tlast),
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.s_axis_tid(0),
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.s_axis_tdest(0),
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.s_axis_tuser(s_axis_tuser),
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/*
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* AXI stream output
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*/
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.m_axis_tdata(m_axis_tdata),
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.m_axis_tkeep(m_axis_tkeep),
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.m_axis_tvalid(m_axis_tvalid),
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.m_axis_tready(m_axis_tready),
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.m_axis_tlast(m_axis_tlast),
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.m_axis_tid(),
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.m_axis_tdest(),
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.m_axis_tuser(m_axis_tuser),
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/*
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* MAC control frame interface
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*/
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.mcf_valid(rx_mcf_valid),
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.mcf_eth_dst(rx_mcf_eth_dst),
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.mcf_eth_src(rx_mcf_eth_src),
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.mcf_eth_type(rx_mcf_eth_type),
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.mcf_opcode(rx_mcf_opcode),
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.mcf_params(rx_mcf_params),
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.mcf_id(),
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.mcf_dest(),
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.mcf_user(),
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/*
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* Configuration
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*/
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.cfg_mcf_rx_eth_dst_mcast(48'h01_80_C2_00_00_01),
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.cfg_mcf_rx_check_eth_dst_mcast(1'b1),
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.cfg_mcf_rx_eth_dst_ucast(48'd0),
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.cfg_mcf_rx_check_eth_dst_ucast(1'b0),
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.cfg_mcf_rx_eth_src(48'd0),
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.cfg_mcf_rx_check_eth_src(1'b0),
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.cfg_mcf_rx_eth_type(16'h8808),
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.cfg_mcf_rx_opcode_lfc(16'h0001),
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.cfg_mcf_rx_check_opcode_lfc(rx_lfc_en),
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.cfg_mcf_rx_opcode_pfc(16'h0101),
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.cfg_mcf_rx_check_opcode_pfc(rx_pfc_en != 0),
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.cfg_mcf_rx_forward(1'b0),
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.cfg_mcf_rx_enable(rx_lfc_en || rx_pfc_en),
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/*
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* Status
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*/
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.stat_rx_mcf()
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);
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mac_pause_ctrl_rx #(
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.MCF_PARAMS_SIZE(18),
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.PFC_ENABLE(PFC_ENABLE)
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)
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mac_pause_ctrl_rx_inst (
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.clk(clk),
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.rst(rst),
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/*
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* MAC control frame interface
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*/
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.mcf_valid(rx_mcf_valid),
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.mcf_eth_dst(rx_mcf_eth_dst),
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.mcf_eth_src(rx_mcf_eth_src),
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.mcf_eth_type(rx_mcf_eth_type),
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.mcf_opcode(rx_mcf_opcode),
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.mcf_params(rx_mcf_params),
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/*
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* Pause (IEEE 802.3 annex 31B)
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*/
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.rx_lfc_en(rx_lfc_en),
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.rx_lfc_req(rx_lfc_req),
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.rx_lfc_ack(rx_lfc_ack),
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/*
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* Priority Flow Control (PFC) (IEEE 802.3 annex 31D)
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*/
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.rx_pfc_en(rx_pfc_en),
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.rx_pfc_req(rx_pfc_req),
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.rx_pfc_ack(rx_pfc_ack),
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/*
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* Configuration
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*/
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.cfg_rx_lfc_opcode(16'h0001),
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.cfg_rx_lfc_en(rx_lfc_en),
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.cfg_rx_pfc_opcode(16'h0101),
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.cfg_rx_pfc_en(rx_pfc_en),
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.cfg_quanta_step(rx_fc_quanta_step),
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.cfg_quanta_clk_en(rx_fc_quanta_clk_en),
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/*
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* Status
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*/
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.stat_rx_lfc_pkt(),
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.stat_rx_lfc_xon(),
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.stat_rx_lfc_xoff(),
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.stat_rx_lfc_paused(),
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.stat_rx_pfc_pkt(),
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.stat_rx_pfc_xon(),
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.stat_rx_pfc_xoff(),
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.stat_rx_pfc_paused()
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);
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end else begin
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assign m_axis_tdata = s_axis_tdata;
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assign m_axis_tkeep = s_axis_tkeep;
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assign m_axis_tvalid = s_axis_tvalid;
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assign s_axis_tready = m_axis_tready;
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assign m_axis_tlast = s_axis_tlast;
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assign m_axis_tuser = s_axis_tuser;
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assign rx_lfc_req = 1'b0;
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assign rx_pfc_req = 8'd0;
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end
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endmodule
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`resetall
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