/* Copyright 2019, The Regents of the University of California. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OF THE UNIVERSITY OF CALIFORNIA OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. The views and conclusions contained in the software and documentation are those of the authors and should not be interpreted as representing official policies, either expressed or implied, of The Regents of the University of California. */ // Language: Verilog 2001 `timescale 1ns / 1ps /* * NIC Port */ module mqnic_port # ( // DMA address width parameter DMA_ADDR_WIDTH = 64, // DMA length field width parameter DMA_LEN_WIDTH = 16, // DMA tag field width parameter DMA_TAG_WIDTH = 8, // Request tag field width parameter REQ_TAG_WIDTH = 8, // Descriptor request tag field width parameter DESC_REQ_TAG_WIDTH = 8, // Queue request tag field width parameter QUEUE_REQ_TAG_WIDTH = 8, // Queue operation tag field width parameter QUEUE_OP_TAG_WIDTH = 8, // Transmit queue index width parameter TX_QUEUE_INDEX_WIDTH = 8, // Receive queue index width parameter RX_QUEUE_INDEX_WIDTH = 8, // Max queue index width parameter QUEUE_INDEX_WIDTH = TX_QUEUE_INDEX_WIDTH > RX_QUEUE_INDEX_WIDTH ? TX_QUEUE_INDEX_WIDTH : RX_QUEUE_INDEX_WIDTH, // Transmit completion queue index width parameter TX_CPL_QUEUE_INDEX_WIDTH = 8, // Receive completion queue index width parameter RX_CPL_QUEUE_INDEX_WIDTH = 8, // Max completion queue index width parameter CPL_QUEUE_INDEX_WIDTH = TX_CPL_QUEUE_INDEX_WIDTH > RX_CPL_QUEUE_INDEX_WIDTH ? TX_CPL_QUEUE_INDEX_WIDTH : RX_CPL_QUEUE_INDEX_WIDTH, // Transmit descriptor table size (number of in-flight operations) parameter TX_DESC_TABLE_SIZE = 16, // Receive descriptor table size (number of in-flight operations) parameter RX_DESC_TABLE_SIZE = 16, // Width of descriptor table field for tracking outstanding DMA operations parameter DESC_TABLE_DMA_OP_COUNT_WIDTH = 4, // Max number of in-flight descriptor requests (transmit) parameter TX_MAX_DESC_REQ = 16, // Transmit descriptor FIFO size parameter TX_DESC_FIFO_SIZE = TX_MAX_DESC_REQ*8, // Max number of in-flight descriptor requests (transmit) parameter RX_MAX_DESC_REQ = 16, // Receive descriptor FIFO size parameter RX_DESC_FIFO_SIZE = RX_MAX_DESC_REQ*8, // Scheduler operation table size parameter TX_SCHEDULER_OP_TABLE_SIZE = 32, // Scheduler pipeline setting parameter TX_SCHEDULER_PIPELINE = 3, // Scheduler TDMA index width parameter TDMA_INDEX_WIDTH = 8, // Queue element pointer width parameter QUEUE_PTR_WIDTH = 16, // Enable PTP timestamping parameter PTP_TS_ENABLE = 1, // PTP timestamp width parameter PTP_TS_WIDTH = 96, // Enable TX checksum offload parameter TX_CHECKSUM_ENABLE = 1, // Enable RX RSS parameter RX_RSS_ENABLE = 1, // Enable RX hashing parameter RX_HASH_ENABLE = 1, // Enable RX checksum offload parameter RX_CHECKSUM_ENABLE = 1, // Width of control register interface address in bits parameter REG_ADDR_WIDTH = 16, // Width of control register interface data in bits parameter REG_DATA_WIDTH = 32, // Width of control register interface strb parameter REG_STRB_WIDTH = (REG_DATA_WIDTH/8), // Width of AXI lite data bus in bits parameter AXIL_DATA_WIDTH = 32, // Width of AXI lite address bus in bits parameter AXIL_ADDR_WIDTH = 16, // Width of AXI lite wstrb (width of data bus in words) parameter AXIL_STRB_WIDTH = (AXIL_DATA_WIDTH/8), // Offset to AXI lite interface parameter AXIL_OFFSET = 0, // DMA RAM segment count parameter SEG_COUNT = 2, // DMA RAM segment data width parameter SEG_DATA_WIDTH = 64, // DMA RAM segment address width parameter SEG_ADDR_WIDTH = 8, // DMA RAM segment byte enable width parameter SEG_BE_WIDTH = SEG_DATA_WIDTH/8, // DMA RAM address width parameter RAM_ADDR_WIDTH = SEG_ADDR_WIDTH+$clog2(SEG_COUNT)+$clog2(SEG_BE_WIDTH), // DMA RAM pipeline stages parameter RAM_PIPELINE = 2, // Width of AXI stream interfaces in bits parameter AXIS_DATA_WIDTH = 256, // AXI stream tkeep signal width (words per cycle) parameter AXIS_KEEP_WIDTH = AXIS_DATA_WIDTH/8, // Max transmit packet size parameter MAX_TX_SIZE = 2048, // Max receive packet size parameter MAX_RX_SIZE = 2048, // DMA TX RAM size parameter TX_RAM_SIZE = 8*MAX_TX_SIZE, // DMA RX RAM size parameter RX_RAM_SIZE = 8*MAX_RX_SIZE, // Descriptor size (in bytes) parameter DESC_SIZE = 16, // Descriptor size (in bytes) parameter CPL_SIZE = 32, // Width of AXI stream descriptor interfaces in bits parameter AXIS_DESC_DATA_WIDTH = DESC_SIZE*8, // AXI stream descriptor tkeep signal width (words per cycle) parameter AXIS_DESC_KEEP_WIDTH = AXIS_DESC_DATA_WIDTH/8 ) ( input wire clk, input wire rst, /* * Descriptor request output */ output wire [0:0] m_axis_desc_req_sel, output wire [QUEUE_INDEX_WIDTH-1:0] m_axis_desc_req_queue, output wire [DESC_REQ_TAG_WIDTH-1:0] m_axis_desc_req_tag, output wire m_axis_desc_req_valid, input wire m_axis_desc_req_ready, /* * Descriptor request status input */ input wire [QUEUE_INDEX_WIDTH-1:0] s_axis_desc_req_status_queue, input wire [QUEUE_PTR_WIDTH-1:0] s_axis_desc_req_status_ptr, input wire [CPL_QUEUE_INDEX_WIDTH-1:0] s_axis_desc_req_status_cpl, input wire [DESC_REQ_TAG_WIDTH-1:0] s_axis_desc_req_status_tag, input wire s_axis_desc_req_status_empty, input wire s_axis_desc_req_status_error, input wire s_axis_desc_req_status_valid, /* * Descriptor data input */ input wire [AXIS_DESC_DATA_WIDTH-1:0] s_axis_desc_tdata, input wire [AXIS_DESC_KEEP_WIDTH-1:0] s_axis_desc_tkeep, input wire s_axis_desc_tvalid, output wire s_axis_desc_tready, input wire s_axis_desc_tlast, input wire [DESC_REQ_TAG_WIDTH-1:0] s_axis_desc_tid, input wire s_axis_desc_tuser, /* * Completion request output */ output wire [0:0] m_axis_cpl_req_sel, output wire [QUEUE_INDEX_WIDTH-1:0] m_axis_cpl_req_queue, output wire [DESC_REQ_TAG_WIDTH-1:0] m_axis_cpl_req_tag, output wire [CPL_SIZE*8-1:0] m_axis_cpl_req_data, output wire m_axis_cpl_req_valid, input wire m_axis_cpl_req_ready, /* * Completion request status input */ input wire [DESC_REQ_TAG_WIDTH-1:0] s_axis_cpl_req_status_tag, input wire s_axis_cpl_req_status_full, input wire s_axis_cpl_req_status_error, input wire s_axis_cpl_req_status_valid, /* * TX doorbell input */ input wire [TX_QUEUE_INDEX_WIDTH-1:0] s_axis_tx_doorbell_queue, input wire s_axis_tx_doorbell_valid, /* * DMA read descriptor output */ output wire [DMA_ADDR_WIDTH-1:0] m_axis_dma_read_desc_dma_addr, output wire [RAM_ADDR_WIDTH-1:0] m_axis_dma_read_desc_ram_addr, output wire [DMA_LEN_WIDTH-1:0] m_axis_dma_read_desc_len, output wire [DMA_TAG_WIDTH-1:0] m_axis_dma_read_desc_tag, output wire m_axis_dma_read_desc_valid, input wire m_axis_dma_read_desc_ready, /* * DMA read descriptor status input */ input wire [DMA_TAG_WIDTH-1:0] s_axis_dma_read_desc_status_tag, input wire [3:0] s_axis_dma_read_desc_status_error, input wire s_axis_dma_read_desc_status_valid, /* * DMA write descriptor output */ output wire [DMA_ADDR_WIDTH-1:0] m_axis_dma_write_desc_dma_addr, output wire [RAM_ADDR_WIDTH-1:0] m_axis_dma_write_desc_ram_addr, output wire [DMA_LEN_WIDTH-1:0] m_axis_dma_write_desc_len, output wire [DMA_TAG_WIDTH-1:0] m_axis_dma_write_desc_tag, output wire m_axis_dma_write_desc_valid, input wire m_axis_dma_write_desc_ready, /* * DMA write descriptor status input */ input wire [DMA_TAG_WIDTH-1:0] s_axis_dma_write_desc_status_tag, input wire [3:0] s_axis_dma_write_desc_status_error, input wire s_axis_dma_write_desc_status_valid, /* * Control register interface */ input wire [REG_ADDR_WIDTH-1:0] ctrl_reg_wr_addr, input wire [REG_DATA_WIDTH-1:0] ctrl_reg_wr_data, input wire [REG_STRB_WIDTH-1:0] ctrl_reg_wr_strb, input wire ctrl_reg_wr_en, output wire ctrl_reg_wr_wait, output wire ctrl_reg_wr_ack, input wire [REG_ADDR_WIDTH-1:0] ctrl_reg_rd_addr, input wire ctrl_reg_rd_en, output wire [REG_DATA_WIDTH-1:0] ctrl_reg_rd_data, output wire ctrl_reg_rd_wait, output wire ctrl_reg_rd_ack, /* * AXI-Lite slave interface (schedulers) */ input wire [AXIL_ADDR_WIDTH-1:0] s_axil_awaddr, input wire [2:0] s_axil_awprot, input wire s_axil_awvalid, output wire s_axil_awready, input wire [AXIL_DATA_WIDTH-1:0] s_axil_wdata, input wire [AXIL_STRB_WIDTH-1:0] s_axil_wstrb, input wire s_axil_wvalid, output wire s_axil_wready, output wire [1:0] s_axil_bresp, output wire s_axil_bvalid, input wire s_axil_bready, input wire [AXIL_ADDR_WIDTH-1:0] s_axil_araddr, input wire [2:0] s_axil_arprot, input wire s_axil_arvalid, output wire s_axil_arready, output wire [AXIL_DATA_WIDTH-1:0] s_axil_rdata, output wire [1:0] s_axil_rresp, output wire s_axil_rvalid, input wire s_axil_rready, /* * RAM interface */ input wire [SEG_COUNT*SEG_BE_WIDTH-1:0] dma_ram_wr_cmd_be, input wire [SEG_COUNT*SEG_ADDR_WIDTH-1:0] dma_ram_wr_cmd_addr, input wire [SEG_COUNT*SEG_DATA_WIDTH-1:0] dma_ram_wr_cmd_data, input wire [SEG_COUNT-1:0] dma_ram_wr_cmd_valid, output wire [SEG_COUNT-1:0] dma_ram_wr_cmd_ready, output wire [SEG_COUNT-1:0] dma_ram_wr_done, input wire [SEG_COUNT*SEG_ADDR_WIDTH-1:0] dma_ram_rd_cmd_addr, input wire [SEG_COUNT-1:0] dma_ram_rd_cmd_valid, output wire [SEG_COUNT-1:0] dma_ram_rd_cmd_ready, output wire [SEG_COUNT*SEG_DATA_WIDTH-1:0] dma_ram_rd_resp_data, output wire [SEG_COUNT-1:0] dma_ram_rd_resp_valid, input wire [SEG_COUNT-1:0] dma_ram_rd_resp_ready, /* * Transmit data output */ output wire [AXIS_DATA_WIDTH-1:0] tx_axis_tdata, output wire [AXIS_KEEP_WIDTH-1:0] tx_axis_tkeep, output wire tx_axis_tvalid, input wire tx_axis_tready, output wire tx_axis_tlast, output wire tx_axis_tuser, /* * Transmit PTP timestamp input */ input wire [PTP_TS_WIDTH-1:0] s_axis_tx_ptp_ts_96, input wire s_axis_tx_ptp_ts_valid, output wire s_axis_tx_ptp_ts_ready, /* * Receive data input */ input wire [AXIS_DATA_WIDTH-1:0] rx_axis_tdata, input wire [AXIS_KEEP_WIDTH-1:0] rx_axis_tkeep, input wire rx_axis_tvalid, output wire rx_axis_tready, input wire rx_axis_tlast, input wire rx_axis_tuser, /* * Receive PTP timestamp input */ input wire [PTP_TS_WIDTH-1:0] s_axis_rx_ptp_ts_96, input wire s_axis_rx_ptp_ts_valid, output wire s_axis_rx_ptp_ts_ready, /* * PTP clock */ input wire [PTP_TS_WIDTH-1:0] ptp_ts_96, input wire ptp_ts_step ); parameter DMA_CLIENT_TAG_WIDTH = $clog2(TX_DESC_TABLE_SIZE > RX_DESC_TABLE_SIZE ? TX_DESC_TABLE_SIZE : RX_DESC_TABLE_SIZE); parameter DMA_CLIENT_LEN_WIDTH = DMA_LEN_WIDTH; parameter DESC_REQ_TAG_WIDTH_INT = DESC_REQ_TAG_WIDTH - $clog2(2); // Checksumming and RSS wire [AXIS_DATA_WIDTH-1:0] rx_axis_tdata_int; wire [AXIS_KEEP_WIDTH-1:0] rx_axis_tkeep_int; wire rx_axis_tvalid_int; wire rx_axis_tready_int; wire rx_axis_tlast_int; wire rx_axis_tuser_int; wire [AXIS_DATA_WIDTH-1:0] tx_axis_tdata_int; wire [AXIS_KEEP_WIDTH-1:0] tx_axis_tkeep_int; wire tx_axis_tvalid_int; wire tx_axis_tready_int; wire tx_axis_tlast_int; wire tx_axis_tuser_int; // Descriptor and completion wire [0:0] rx_desc_req_sel = 1'b1; wire [QUEUE_INDEX_WIDTH-1:0] rx_desc_req_queue; wire [DESC_REQ_TAG_WIDTH_INT-1:0] rx_desc_req_tag; wire rx_desc_req_valid; wire rx_desc_req_ready; wire [QUEUE_INDEX_WIDTH-1:0] rx_desc_req_status_queue; wire [QUEUE_PTR_WIDTH-1:0] rx_desc_req_status_ptr; wire [CPL_QUEUE_INDEX_WIDTH-1:0] rx_desc_req_status_cpl; wire [DESC_REQ_TAG_WIDTH_INT-1:0] rx_desc_req_status_tag; wire rx_desc_req_status_empty; wire rx_desc_req_status_error; wire rx_desc_req_status_valid; wire [AXIS_DESC_DATA_WIDTH-1:0] rx_desc_tdata; wire [AXIS_DESC_KEEP_WIDTH-1:0] rx_desc_tkeep; wire rx_desc_tvalid; wire rx_desc_tready; wire rx_desc_tlast; wire [DESC_REQ_TAG_WIDTH_INT-1:0] rx_desc_tid; wire rx_desc_tuser; wire [AXIS_DESC_DATA_WIDTH-1:0] rx_fifo_desc_tdata; wire [AXIS_DESC_KEEP_WIDTH-1:0] rx_fifo_desc_tkeep; wire rx_fifo_desc_tvalid; wire rx_fifo_desc_tready; wire rx_fifo_desc_tlast; wire [DESC_REQ_TAG_WIDTH_INT-1:0] rx_fifo_desc_tid; wire rx_fifo_desc_tuser; wire [0:0] tx_desc_req_sel = 1'b0; wire [QUEUE_INDEX_WIDTH-1:0] tx_desc_req_queue; wire [DESC_REQ_TAG_WIDTH_INT-1:0] tx_desc_req_tag; wire tx_desc_req_valid; wire tx_desc_req_ready; wire [QUEUE_INDEX_WIDTH-1:0] tx_desc_req_status_queue; wire [QUEUE_PTR_WIDTH-1:0] tx_desc_req_status_ptr; wire [CPL_QUEUE_INDEX_WIDTH-1:0] tx_desc_req_status_cpl; wire [DESC_REQ_TAG_WIDTH_INT-1:0] tx_desc_req_status_tag; wire tx_desc_req_status_empty; wire tx_desc_req_status_error; wire tx_desc_req_status_valid; wire [AXIS_DESC_DATA_WIDTH-1:0] tx_desc_tdata; wire [AXIS_DESC_KEEP_WIDTH-1:0] tx_desc_tkeep; wire tx_desc_tvalid; wire tx_desc_tready; wire tx_desc_tlast; wire [DESC_REQ_TAG_WIDTH_INT-1:0] tx_desc_tid; wire tx_desc_tuser; wire [AXIS_DESC_DATA_WIDTH-1:0] tx_fifo_desc_tdata; wire [AXIS_DESC_KEEP_WIDTH-1:0] tx_fifo_desc_tkeep; wire tx_fifo_desc_tvalid; wire tx_fifo_desc_tready; wire tx_fifo_desc_tlast; wire [DESC_REQ_TAG_WIDTH_INT-1:0] tx_fifo_desc_tid; wire tx_fifo_desc_tuser; wire [0:0] rx_cpl_req_sel = 1'b1; wire [QUEUE_INDEX_WIDTH-1:0] rx_cpl_req_queue; wire [DESC_REQ_TAG_WIDTH_INT-1:0] rx_cpl_req_tag; wire [CPL_SIZE*8-1:0] rx_cpl_req_data; wire rx_cpl_req_valid; wire rx_cpl_req_ready; wire [DESC_REQ_TAG_WIDTH_INT-1:0] rx_cpl_req_status_tag; wire rx_cpl_req_status_full; wire rx_cpl_req_status_error; wire rx_cpl_req_status_valid; wire [0:0] tx_cpl_req_sel = 1'b0; wire [QUEUE_INDEX_WIDTH-1:0] tx_cpl_req_queue; wire [DESC_REQ_TAG_WIDTH_INT-1:0] tx_cpl_req_tag; wire [CPL_SIZE*8-1:0] tx_cpl_req_data; wire tx_cpl_req_valid; wire tx_cpl_req_ready; wire [DESC_REQ_TAG_WIDTH_INT-1:0] tx_cpl_req_status_tag; wire tx_cpl_req_status_full; wire tx_cpl_req_status_error; wire tx_cpl_req_status_valid; // Scheduler wire [TX_QUEUE_INDEX_WIDTH-1:0] tx_sched_ctrl_queue; wire tx_sched_ctrl_enable; wire tx_sched_ctrl_valid; wire tx_sched_ctrl_ready; // TX engine wire [TX_QUEUE_INDEX_WIDTH-1:0] tx_req_queue; wire [REQ_TAG_WIDTH-1:0] tx_req_tag; wire tx_req_valid; wire tx_req_ready; wire [DMA_CLIENT_LEN_WIDTH-1:0] tx_req_status_len; wire [REQ_TAG_WIDTH-1:0] tx_req_status_tag; wire tx_req_status_valid; // RX engine wire [RX_QUEUE_INDEX_WIDTH-1:0] rx_req_queue; wire [REQ_TAG_WIDTH-1:0] rx_req_tag; wire rx_req_valid; wire rx_req_ready; wire [REQ_TAG_WIDTH-1:0] rx_req_status_tag; wire rx_req_status_valid; // Timestamps wire [95:0] rx_ptp_ts_96; wire rx_ptp_ts_valid; wire rx_ptp_ts_ready; wire [95:0] tx_ptp_ts_96; wire tx_ptp_ts_valid; wire tx_ptp_ts_ready; // RX hashing wire [31:0] rx_hash; wire [3:0] rx_hash_type; wire rx_hash_valid; wire [31:0] rx_fifo_hash; wire [3:0] rx_fifo_hash_type; wire rx_fifo_hash_valid; wire rx_fifo_hash_ready; // Checksums wire [15:0] rx_csum; wire rx_csum_valid; wire [15:0] rx_fifo_csum; wire rx_fifo_csum_valid; wire rx_fifo_csum_ready; wire tx_csum_cmd_csum_enable; wire [7:0] tx_csum_cmd_csum_start; wire [7:0] tx_csum_cmd_csum_offset; wire tx_csum_cmd_valid; wire tx_csum_cmd_ready; wire tx_fifo_csum_cmd_csum_enable; wire [7:0] tx_fifo_csum_cmd_csum_start; wire [7:0] tx_fifo_csum_cmd_csum_offset; wire tx_fifo_csum_cmd_valid; wire tx_fifo_csum_cmd_ready; // Interface DMA control wire [RAM_ADDR_WIDTH-1:0] dma_tx_desc_addr; wire [DMA_CLIENT_LEN_WIDTH-1:0] dma_tx_desc_len; wire [DMA_CLIENT_TAG_WIDTH-1:0] dma_tx_desc_tag; wire dma_tx_desc_user; wire dma_tx_desc_valid; wire dma_tx_desc_ready; wire [DMA_CLIENT_TAG_WIDTH-1:0] dma_tx_desc_status_tag; wire [3:0] dma_tx_desc_status_error; wire dma_tx_desc_status_valid; wire [RAM_ADDR_WIDTH-1:0] dma_rx_desc_addr; wire [DMA_CLIENT_LEN_WIDTH-1:0] dma_rx_desc_len; wire [DMA_CLIENT_TAG_WIDTH-1:0] dma_rx_desc_tag; wire dma_rx_desc_valid; wire dma_rx_desc_ready; wire [DMA_CLIENT_LEN_WIDTH-1:0] dma_rx_desc_status_len; wire [DMA_CLIENT_TAG_WIDTH-1:0] dma_rx_desc_status_tag; wire dma_rx_desc_status_user; wire [3:0] dma_rx_desc_status_error; wire dma_rx_desc_status_valid; wire sched_ctrl_reg_wr_wait; wire sched_ctrl_reg_wr_ack; wire [AXIL_DATA_WIDTH-1:0] sched_ctrl_reg_rd_data; wire sched_ctrl_reg_rd_wait; wire sched_ctrl_reg_rd_ack; reg ctrl_reg_wr_ack_reg = 1'b0; reg [AXIL_DATA_WIDTH-1:0] ctrl_reg_rd_data_reg = {AXIL_DATA_WIDTH{1'b0}}; reg ctrl_reg_rd_ack_reg = 1'b0; reg [RX_QUEUE_INDEX_WIDTH-1:0] rss_mask_reg = 0; reg [DMA_CLIENT_LEN_WIDTH-1:0] tx_mtu_reg = MAX_TX_SIZE; reg [DMA_CLIENT_LEN_WIDTH-1:0] rx_mtu_reg = MAX_RX_SIZE; assign ctrl_reg_wr_wait = sched_ctrl_reg_wr_wait; assign ctrl_reg_wr_ack = ctrl_reg_wr_ack_reg | sched_ctrl_reg_wr_ack; assign ctrl_reg_rd_data = ctrl_reg_rd_data_reg | sched_ctrl_reg_rd_data; assign ctrl_reg_rd_wait = sched_ctrl_reg_rd_wait; assign ctrl_reg_rd_ack = ctrl_reg_rd_ack_reg | sched_ctrl_reg_rd_ack; always @(posedge clk) begin ctrl_reg_wr_ack_reg <= 1'b0; ctrl_reg_rd_data_reg <= {AXIL_DATA_WIDTH{1'b0}}; ctrl_reg_rd_ack_reg <= 1'b0; if (ctrl_reg_wr_en && !ctrl_reg_wr_ack_reg) begin // write operation ctrl_reg_wr_ack_reg <= 1'b1; case ({ctrl_reg_wr_addr >> 2, 2'b00}) 16'h0080: rss_mask_reg <= ctrl_reg_wr_data; // RSS mask 16'h0100: tx_mtu_reg <= ctrl_reg_wr_data; // TX MTU 16'h0200: rx_mtu_reg <= ctrl_reg_wr_data; // RX MTU default: ctrl_reg_wr_ack_reg <= 1'b0; endcase end if (ctrl_reg_rd_en && !ctrl_reg_rd_ack_reg) begin // read operation ctrl_reg_rd_ack_reg <= 1'b1; case ({ctrl_reg_rd_addr >> 2, 2'b00}) 16'h0000: ctrl_reg_rd_data_reg <= 32'd0; // port_id 16'h0004: begin // port_features ctrl_reg_rd_data_reg[0] <= RX_RSS_ENABLE && RX_HASH_ENABLE; ctrl_reg_rd_data_reg[4] <= PTP_TS_ENABLE; ctrl_reg_rd_data_reg[8] <= TX_CHECKSUM_ENABLE; ctrl_reg_rd_data_reg[9] <= RX_CHECKSUM_ENABLE; ctrl_reg_rd_data_reg[10] <= RX_HASH_ENABLE; end 16'h0008: ctrl_reg_rd_data_reg <= MAX_TX_SIZE; // port_mtu 16'h0080: ctrl_reg_rd_data_reg <= rss_mask_reg; // RSS mask 16'h0100: ctrl_reg_rd_data_reg <= tx_mtu_reg; // TX MTU 16'h0200: ctrl_reg_rd_data_reg <= rx_mtu_reg; // RX MTU default: ctrl_reg_rd_ack_reg <= 1'b0; endcase end if (rst) begin ctrl_reg_wr_ack_reg <= 1'b0; ctrl_reg_rd_ack_reg <= 1'b0; rss_mask_reg <= 0; tx_mtu_reg <= MAX_TX_SIZE; rx_mtu_reg <= MAX_RX_SIZE; end end desc_op_mux #( .PORTS(2), .SELECT_WIDTH(1), .QUEUE_INDEX_WIDTH(QUEUE_INDEX_WIDTH), .QUEUE_PTR_WIDTH(QUEUE_PTR_WIDTH), .CPL_QUEUE_INDEX_WIDTH(CPL_QUEUE_INDEX_WIDTH), .S_REQ_TAG_WIDTH(DESC_REQ_TAG_WIDTH_INT), .M_REQ_TAG_WIDTH(DESC_REQ_TAG_WIDTH), .AXIS_DATA_WIDTH(AXIS_DESC_DATA_WIDTH), .AXIS_KEEP_WIDTH(AXIS_DESC_KEEP_WIDTH), .ARB_TYPE_ROUND_ROBIN(1), .ARB_LSB_HIGH_PRIORITY(1) ) desc_op_mux_inst ( .clk(clk), .rst(rst), /* * Descriptor request output */ .m_axis_req_sel(m_axis_desc_req_sel), .m_axis_req_queue(m_axis_desc_req_queue), .m_axis_req_tag(m_axis_desc_req_tag), .m_axis_req_valid(m_axis_desc_req_valid), .m_axis_req_ready(m_axis_desc_req_ready), /* * Descriptor request status input */ .s_axis_req_status_queue(s_axis_desc_req_status_queue), .s_axis_req_status_ptr(s_axis_desc_req_status_ptr), .s_axis_req_status_cpl(s_axis_desc_req_status_cpl), .s_axis_req_status_tag(s_axis_desc_req_status_tag), .s_axis_req_status_empty(s_axis_desc_req_status_empty), .s_axis_req_status_error(s_axis_desc_req_status_error), .s_axis_req_status_valid(s_axis_desc_req_status_valid), /* * Descriptor data input */ .s_axis_desc_tdata(s_axis_desc_tdata), .s_axis_desc_tkeep(s_axis_desc_tkeep), .s_axis_desc_tvalid(s_axis_desc_tvalid), .s_axis_desc_tready(s_axis_desc_tready), .s_axis_desc_tlast(s_axis_desc_tlast), .s_axis_desc_tid(s_axis_desc_tid), .s_axis_desc_tuser(s_axis_desc_tuser), /* * Descriptor request input */ .s_axis_req_sel({rx_desc_req_sel, tx_desc_req_sel}), .s_axis_req_queue({rx_desc_req_queue, tx_desc_req_queue}), .s_axis_req_tag({rx_desc_req_tag, tx_desc_req_tag}), .s_axis_req_valid({rx_desc_req_valid, tx_desc_req_valid}), .s_axis_req_ready({rx_desc_req_ready, tx_desc_req_ready}), /* * Descriptor response output */ .m_axis_req_status_queue({rx_desc_req_status_queue, tx_desc_req_status_queue}), .m_axis_req_status_ptr({rx_desc_req_status_ptr, tx_desc_req_status_ptr}), .m_axis_req_status_cpl({rx_desc_req_status_cpl, tx_desc_req_status_cpl}), .m_axis_req_status_tag({rx_desc_req_status_tag, tx_desc_req_status_tag}), .m_axis_req_status_empty({rx_desc_req_status_empty, tx_desc_req_status_empty}), .m_axis_req_status_error({rx_desc_req_status_error, tx_desc_req_status_error}), .m_axis_req_status_valid({rx_desc_req_status_valid, tx_desc_req_status_valid}), /* * Descriptor data output */ .m_axis_desc_tdata({rx_desc_tdata, tx_desc_tdata}), .m_axis_desc_tkeep({rx_desc_tkeep, tx_desc_tkeep}), .m_axis_desc_tvalid({rx_desc_tvalid, tx_desc_tvalid}), .m_axis_desc_tready({rx_desc_tready, tx_desc_tready}), .m_axis_desc_tlast({rx_desc_tlast, tx_desc_tlast}), .m_axis_desc_tid({rx_desc_tid, tx_desc_tid}), .m_axis_desc_tuser({rx_desc_tuser, tx_desc_tuser}) ); cpl_op_mux #( .PORTS(2), .SELECT_WIDTH(1), .QUEUE_INDEX_WIDTH(QUEUE_INDEX_WIDTH), .S_REQ_TAG_WIDTH(DESC_REQ_TAG_WIDTH_INT), .M_REQ_TAG_WIDTH(DESC_REQ_TAG_WIDTH), .CPL_SIZE(CPL_SIZE), .ARB_TYPE_ROUND_ROBIN(1), .ARB_LSB_HIGH_PRIORITY(1) ) cpl_op_mux_inst ( .clk(clk), .rst(rst), /* * Completion request output */ .m_axis_req_sel(m_axis_cpl_req_sel), .m_axis_req_queue(m_axis_cpl_req_queue), .m_axis_req_tag(m_axis_cpl_req_tag), .m_axis_req_data(m_axis_cpl_req_data), .m_axis_req_valid(m_axis_cpl_req_valid), .m_axis_req_ready(m_axis_cpl_req_ready), /* * Completion request status input */ .s_axis_req_status_tag(s_axis_cpl_req_status_tag), .s_axis_req_status_full(s_axis_cpl_req_status_full), .s_axis_req_status_error(s_axis_cpl_req_status_error), .s_axis_req_status_valid(s_axis_cpl_req_status_valid), /* * Completion request input */ .s_axis_req_sel({rx_cpl_req_sel, tx_cpl_req_sel}), .s_axis_req_queue({rx_cpl_req_queue, tx_cpl_req_queue}), .s_axis_req_tag({rx_cpl_req_tag, tx_cpl_req_tag}), .s_axis_req_data({rx_cpl_req_data, tx_cpl_req_data}), .s_axis_req_valid({rx_cpl_req_valid, tx_cpl_req_valid}), .s_axis_req_ready({rx_cpl_req_ready, tx_cpl_req_ready}), /* * Completion response output */ .m_axis_req_status_tag({rx_cpl_req_status_tag, tx_cpl_req_status_tag}), .m_axis_req_status_full({rx_cpl_req_status_full, tx_cpl_req_status_full}), .m_axis_req_status_error({rx_cpl_req_status_error, tx_cpl_req_status_error}), .m_axis_req_status_valid({rx_cpl_req_status_valid, tx_cpl_req_status_valid}) ); mqnic_tx_scheduler_block #( .REG_DATA_WIDTH(REG_DATA_WIDTH), .REG_ADDR_WIDTH(REG_ADDR_WIDTH), .REG_STRB_WIDTH(REG_STRB_WIDTH), .AXIL_DATA_WIDTH(AXIL_DATA_WIDTH), .AXIL_ADDR_WIDTH(AXIL_ADDR_WIDTH), .AXIL_STRB_WIDTH(AXIL_STRB_WIDTH), .AXIL_OFFSET(AXIL_OFFSET), .LEN_WIDTH(DMA_CLIENT_LEN_WIDTH), .REQ_TAG_WIDTH(REQ_TAG_WIDTH), .OP_TABLE_SIZE(TX_SCHEDULER_OP_TABLE_SIZE), .QUEUE_INDEX_WIDTH(TX_QUEUE_INDEX_WIDTH), .PIPELINE(TX_SCHEDULER_PIPELINE), .TDMA_INDEX_WIDTH(TDMA_INDEX_WIDTH), .PTP_TS_WIDTH(PTP_TS_WIDTH), .MAX_TX_SIZE(MAX_TX_SIZE) ) scheduler_block ( .clk(clk), .rst(rst), /* * Control register interface */ .ctrl_reg_wr_addr(ctrl_reg_wr_addr), .ctrl_reg_wr_data(ctrl_reg_wr_data), .ctrl_reg_wr_strb(ctrl_reg_wr_strb), .ctrl_reg_wr_en(ctrl_reg_wr_en), .ctrl_reg_wr_wait(sched_ctrl_reg_wr_wait), .ctrl_reg_wr_ack(sched_ctrl_reg_wr_ack), .ctrl_reg_rd_addr(ctrl_reg_rd_addr), .ctrl_reg_rd_en(ctrl_reg_rd_en), .ctrl_reg_rd_data(sched_ctrl_reg_rd_data), .ctrl_reg_rd_wait(sched_ctrl_reg_rd_wait), .ctrl_reg_rd_ack(sched_ctrl_reg_rd_ack), /* * AXI-Lite slave interface */ .s_axil_awaddr(s_axil_awaddr), .s_axil_awprot(s_axil_awprot), .s_axil_awvalid(s_axil_awvalid), .s_axil_awready(s_axil_awready), .s_axil_wdata(s_axil_wdata), .s_axil_wstrb(s_axil_wstrb), .s_axil_wvalid(s_axil_wvalid), .s_axil_wready(s_axil_wready), .s_axil_bresp(s_axil_bresp), .s_axil_bvalid(s_axil_bvalid), .s_axil_bready(s_axil_bready), .s_axil_araddr(s_axil_araddr), .s_axil_arprot(s_axil_arprot), .s_axil_arvalid(s_axil_arvalid), .s_axil_arready(s_axil_arready), .s_axil_rdata(s_axil_rdata), .s_axil_rresp(s_axil_rresp), .s_axil_rvalid(s_axil_rvalid), .s_axil_rready(s_axil_rready), /* * Transmit request output (queue index) */ .m_axis_tx_req_queue(tx_req_queue), .m_axis_tx_req_tag(tx_req_tag), .m_axis_tx_req_valid(tx_req_valid), .m_axis_tx_req_ready(tx_req_ready), /* * Transmit request status input */ .s_axis_tx_req_status_len(tx_req_status_len), .s_axis_tx_req_status_tag(tx_req_status_tag), .s_axis_tx_req_status_valid(tx_req_status_valid), /* * Doorbell input */ .s_axis_doorbell_queue(s_axis_tx_doorbell_queue), .s_axis_doorbell_valid(s_axis_tx_doorbell_valid), /* * PTP clock */ .ptp_ts_96(ptp_ts_96), .ptp_ts_step(ptp_ts_step) ); axis_fifo #( .DEPTH(TX_DESC_FIFO_SIZE*DESC_SIZE), .DATA_WIDTH(AXIS_DESC_DATA_WIDTH), .KEEP_WIDTH(AXIS_DESC_KEEP_WIDTH), .LAST_ENABLE(1), .ID_ENABLE(1), .ID_WIDTH(DESC_REQ_TAG_WIDTH_INT), .DEST_ENABLE(0), .USER_ENABLE(0), .FRAME_FIFO(0) ) tx_desc_fifo ( .clk(clk), .rst(rst), // AXI input .s_axis_tdata(tx_desc_tdata), .s_axis_tkeep(tx_desc_tkeep), .s_axis_tvalid(tx_desc_tvalid), .s_axis_tready(tx_desc_tready), .s_axis_tlast(tx_desc_tlast), .s_axis_tid(tx_desc_tid), .s_axis_tdest(0), .s_axis_tuser(tx_desc_tuser), // AXI output .m_axis_tdata(tx_fifo_desc_tdata), .m_axis_tkeep(tx_fifo_desc_tkeep), .m_axis_tvalid(tx_fifo_desc_tvalid), .m_axis_tready(tx_fifo_desc_tready), .m_axis_tlast(tx_fifo_desc_tlast), .m_axis_tid(tx_fifo_desc_tid), .m_axis_tdest(), .m_axis_tuser(tx_fifo_desc_tuser), // Status .status_overflow(), .status_bad_frame(), .status_good_frame() ); tx_engine #( .RAM_ADDR_WIDTH(RAM_ADDR_WIDTH), .DMA_ADDR_WIDTH(DMA_ADDR_WIDTH), .DMA_LEN_WIDTH(DMA_LEN_WIDTH), .DMA_CLIENT_LEN_WIDTH(DMA_CLIENT_LEN_WIDTH), .REQ_TAG_WIDTH(REQ_TAG_WIDTH), .DESC_REQ_TAG_WIDTH(DESC_REQ_TAG_WIDTH_INT), .DMA_TAG_WIDTH(DMA_TAG_WIDTH), .DMA_CLIENT_TAG_WIDTH(DMA_CLIENT_TAG_WIDTH), .QUEUE_REQ_TAG_WIDTH(QUEUE_REQ_TAG_WIDTH), .QUEUE_OP_TAG_WIDTH(QUEUE_OP_TAG_WIDTH), .QUEUE_INDEX_WIDTH(TX_QUEUE_INDEX_WIDTH), .QUEUE_PTR_WIDTH(QUEUE_PTR_WIDTH), .CPL_QUEUE_INDEX_WIDTH(TX_CPL_QUEUE_INDEX_WIDTH), .DESC_TABLE_SIZE(TX_DESC_TABLE_SIZE), .DESC_TABLE_DMA_OP_COUNT_WIDTH(DESC_TABLE_DMA_OP_COUNT_WIDTH), .MAX_TX_SIZE(MAX_TX_SIZE), .TX_BUFFER_OFFSET(0), .TX_BUFFER_SIZE(TX_RAM_SIZE), .TX_BUFFER_STEP_SIZE(SEG_COUNT*SEG_BE_WIDTH), .DESC_SIZE(DESC_SIZE), .CPL_SIZE(CPL_SIZE), .MAX_DESC_REQ(TX_MAX_DESC_REQ), .AXIS_DESC_DATA_WIDTH(AXIS_DESC_DATA_WIDTH), .AXIS_DESC_KEEP_WIDTH(AXIS_DESC_KEEP_WIDTH), .PTP_TS_ENABLE(PTP_TS_ENABLE), .TX_CHECKSUM_ENABLE(TX_CHECKSUM_ENABLE) ) tx_engine_inst ( .clk(clk), .rst(rst), /* * Transmit request input (queue index) */ .s_axis_tx_req_queue(tx_req_queue), .s_axis_tx_req_tag(tx_req_tag), .s_axis_tx_req_valid(tx_req_valid), .s_axis_tx_req_ready(tx_req_ready), /* * Transmit request status output */ .m_axis_tx_req_status_len(tx_req_status_len), .m_axis_tx_req_status_tag(tx_req_status_tag), .m_axis_tx_req_status_valid(tx_req_status_valid), /* * Descriptor request output */ .m_axis_desc_req_queue(tx_desc_req_queue), .m_axis_desc_req_tag(tx_desc_req_tag), .m_axis_desc_req_valid(tx_desc_req_valid), .m_axis_desc_req_ready(tx_desc_req_ready), /* * Descriptor request status input */ .s_axis_desc_req_status_queue(tx_desc_req_status_queue), .s_axis_desc_req_status_ptr(tx_desc_req_status_ptr), .s_axis_desc_req_status_cpl(tx_desc_req_status_cpl), .s_axis_desc_req_status_tag(tx_desc_req_status_tag), .s_axis_desc_req_status_empty(tx_desc_req_status_empty), .s_axis_desc_req_status_error(tx_desc_req_status_error), .s_axis_desc_req_status_valid(tx_desc_req_status_valid), /* * Descriptor data input */ .s_axis_desc_tdata(tx_fifo_desc_tdata), .s_axis_desc_tkeep(tx_fifo_desc_tkeep), .s_axis_desc_tvalid(tx_fifo_desc_tvalid), .s_axis_desc_tready(tx_fifo_desc_tready), .s_axis_desc_tlast(tx_fifo_desc_tlast), .s_axis_desc_tid(tx_fifo_desc_tid), .s_axis_desc_tuser(tx_fifo_desc_tuser), /* * Completion request output */ .m_axis_cpl_req_queue(tx_cpl_req_queue), .m_axis_cpl_req_tag(tx_cpl_req_tag), .m_axis_cpl_req_data(tx_cpl_req_data), .m_axis_cpl_req_valid(tx_cpl_req_valid), .m_axis_cpl_req_ready(tx_cpl_req_ready), /* * Completion request status input */ .s_axis_cpl_req_status_tag(tx_cpl_req_status_tag), .s_axis_cpl_req_status_full(tx_cpl_req_status_full), .s_axis_cpl_req_status_error(tx_cpl_req_status_error), .s_axis_cpl_req_status_valid(tx_cpl_req_status_valid), /* * DMA read descriptor output */ .m_axis_dma_read_desc_dma_addr(m_axis_dma_read_desc_dma_addr), .m_axis_dma_read_desc_ram_addr(m_axis_dma_read_desc_ram_addr), .m_axis_dma_read_desc_len(m_axis_dma_read_desc_len), .m_axis_dma_read_desc_tag(m_axis_dma_read_desc_tag), .m_axis_dma_read_desc_valid(m_axis_dma_read_desc_valid), .m_axis_dma_read_desc_ready(m_axis_dma_read_desc_ready), /* * DMA read descriptor status input */ .s_axis_dma_read_desc_status_tag(s_axis_dma_read_desc_status_tag), .s_axis_dma_read_desc_status_error(s_axis_dma_read_desc_status_error), .s_axis_dma_read_desc_status_valid(s_axis_dma_read_desc_status_valid), /* * Transmit descriptor output */ .m_axis_tx_desc_addr(dma_tx_desc_addr), .m_axis_tx_desc_len(dma_tx_desc_len), .m_axis_tx_desc_tag(dma_tx_desc_tag), .m_axis_tx_desc_user(dma_tx_desc_user), .m_axis_tx_desc_valid(dma_tx_desc_valid), .m_axis_tx_desc_ready(dma_tx_desc_ready), /* * Transmit descriptor status input */ .s_axis_tx_desc_status_tag(dma_tx_desc_status_tag), .s_axis_tx_desc_status_error(dma_tx_desc_status_error), .s_axis_tx_desc_status_valid(dma_tx_desc_status_valid), /* * Transmit checksum command output */ .m_axis_tx_csum_cmd_csum_enable(tx_csum_cmd_csum_enable), .m_axis_tx_csum_cmd_csum_start(tx_csum_cmd_csum_start), .m_axis_tx_csum_cmd_csum_offset(tx_csum_cmd_csum_offset), .m_axis_tx_csum_cmd_valid(tx_csum_cmd_valid), .m_axis_tx_csum_cmd_ready(tx_csum_cmd_ready), /* * Transmit timestamp input */ .s_axis_tx_ptp_ts_96(s_axis_tx_ptp_ts_96), .s_axis_tx_ptp_ts_valid(s_axis_tx_ptp_ts_valid), .s_axis_tx_ptp_ts_ready(s_axis_tx_ptp_ts_ready), /* * Configuration */ .enable(1'b1) ); axis_fifo #( .DEPTH(RX_DESC_FIFO_SIZE*DESC_SIZE), .DATA_WIDTH(AXIS_DESC_DATA_WIDTH), .KEEP_WIDTH(AXIS_DESC_KEEP_WIDTH), .LAST_ENABLE(1), .ID_ENABLE(1), .ID_WIDTH(DESC_REQ_TAG_WIDTH_INT), .DEST_ENABLE(0), .USER_ENABLE(0), .FRAME_FIFO(0) ) rx_desc_fifo ( .clk(clk), .rst(rst), // AXI input .s_axis_tdata(rx_desc_tdata), .s_axis_tkeep(rx_desc_tkeep), .s_axis_tvalid(rx_desc_tvalid), .s_axis_tready(rx_desc_tready), .s_axis_tlast(rx_desc_tlast), .s_axis_tid(rx_desc_tid), .s_axis_tdest(0), .s_axis_tuser(rx_desc_tuser), // AXI output .m_axis_tdata(rx_fifo_desc_tdata), .m_axis_tkeep(rx_fifo_desc_tkeep), .m_axis_tvalid(rx_fifo_desc_tvalid), .m_axis_tready(rx_fifo_desc_tready), .m_axis_tlast(rx_fifo_desc_tlast), .m_axis_tid(rx_fifo_desc_tid), .m_axis_tdest(), .m_axis_tuser(rx_fifo_desc_tuser), // Status .status_overflow(), .status_bad_frame(), .status_good_frame() ); rx_engine #( .RAM_ADDR_WIDTH(RAM_ADDR_WIDTH), .DMA_ADDR_WIDTH(DMA_ADDR_WIDTH), .DMA_LEN_WIDTH(DMA_LEN_WIDTH), .DMA_CLIENT_LEN_WIDTH(DMA_CLIENT_LEN_WIDTH), .REQ_TAG_WIDTH(REQ_TAG_WIDTH), .DESC_REQ_TAG_WIDTH(DESC_REQ_TAG_WIDTH_INT), .DMA_TAG_WIDTH(DMA_TAG_WIDTH), .DMA_CLIENT_TAG_WIDTH(DMA_CLIENT_TAG_WIDTH), .QUEUE_REQ_TAG_WIDTH(QUEUE_REQ_TAG_WIDTH), .QUEUE_OP_TAG_WIDTH(QUEUE_OP_TAG_WIDTH), .QUEUE_INDEX_WIDTH(RX_QUEUE_INDEX_WIDTH), .QUEUE_PTR_WIDTH(QUEUE_PTR_WIDTH), .CPL_QUEUE_INDEX_WIDTH(RX_CPL_QUEUE_INDEX_WIDTH), .DESC_TABLE_SIZE(RX_DESC_TABLE_SIZE), .DESC_TABLE_DMA_OP_COUNT_WIDTH(DESC_TABLE_DMA_OP_COUNT_WIDTH), .MAX_RX_SIZE(MAX_RX_SIZE), .RX_BUFFER_OFFSET(0), .RX_BUFFER_SIZE(RX_RAM_SIZE), .RX_BUFFER_STEP_SIZE(SEG_COUNT*SEG_BE_WIDTH), .DESC_SIZE(DESC_SIZE), .CPL_SIZE(CPL_SIZE), .MAX_DESC_REQ(RX_MAX_DESC_REQ), .AXIS_DESC_DATA_WIDTH(AXIS_DESC_DATA_WIDTH), .AXIS_DESC_KEEP_WIDTH(AXIS_DESC_KEEP_WIDTH), .PTP_TS_ENABLE(PTP_TS_ENABLE), .RX_HASH_ENABLE(RX_HASH_ENABLE), .RX_CHECKSUM_ENABLE(RX_CHECKSUM_ENABLE) ) rx_engine_inst ( .clk(clk), .rst(rst), /* * Receive request input (queue index) */ .s_axis_rx_req_queue(rx_req_queue), .s_axis_rx_req_tag(rx_req_tag), .s_axis_rx_req_valid(rx_req_valid), .s_axis_rx_req_ready(rx_req_ready), /* * Receive request status output */ .m_axis_rx_req_status_tag(rx_req_status_tag), .m_axis_rx_req_status_valid(rx_req_status_valid), /* * Descriptor request output */ .m_axis_desc_req_queue(rx_desc_req_queue), .m_axis_desc_req_tag(rx_desc_req_tag), .m_axis_desc_req_valid(rx_desc_req_valid), .m_axis_desc_req_ready(rx_desc_req_ready), /* * Descriptor request status input */ .s_axis_desc_req_status_queue(rx_desc_req_status_queue), .s_axis_desc_req_status_ptr(rx_desc_req_status_ptr), .s_axis_desc_req_status_cpl(rx_desc_req_status_cpl), .s_axis_desc_req_status_tag(rx_desc_req_status_tag), .s_axis_desc_req_status_empty(rx_desc_req_status_empty), .s_axis_desc_req_status_error(rx_desc_req_status_error), .s_axis_desc_req_status_valid(rx_desc_req_status_valid), /* * Descriptor data input */ .s_axis_desc_tdata(rx_fifo_desc_tdata), .s_axis_desc_tkeep(rx_fifo_desc_tkeep), .s_axis_desc_tvalid(rx_fifo_desc_tvalid), .s_axis_desc_tready(rx_fifo_desc_tready), .s_axis_desc_tlast(rx_fifo_desc_tlast), .s_axis_desc_tid(rx_fifo_desc_tid), .s_axis_desc_tuser(rx_fifo_desc_tuser), /* * Completion request output */ .m_axis_cpl_req_queue(rx_cpl_req_queue), .m_axis_cpl_req_tag(rx_cpl_req_tag), .m_axis_cpl_req_data(rx_cpl_req_data), .m_axis_cpl_req_valid(rx_cpl_req_valid), .m_axis_cpl_req_ready(rx_cpl_req_ready), /* * Completion request status input */ .s_axis_cpl_req_status_tag(rx_cpl_req_status_tag), .s_axis_cpl_req_status_full(rx_cpl_req_status_full), .s_axis_cpl_req_status_error(rx_cpl_req_status_error), .s_axis_cpl_req_status_valid(rx_cpl_req_status_valid), /* * DMA write descriptor output */ .m_axis_dma_write_desc_dma_addr(m_axis_dma_write_desc_dma_addr), .m_axis_dma_write_desc_ram_addr(m_axis_dma_write_desc_ram_addr), .m_axis_dma_write_desc_len(m_axis_dma_write_desc_len), .m_axis_dma_write_desc_tag(m_axis_dma_write_desc_tag), .m_axis_dma_write_desc_valid(m_axis_dma_write_desc_valid), .m_axis_dma_write_desc_ready(m_axis_dma_write_desc_ready), /* * DMA write descriptor status input */ .s_axis_dma_write_desc_status_tag(s_axis_dma_write_desc_status_tag), .s_axis_dma_write_desc_status_error(s_axis_dma_write_desc_status_error), .s_axis_dma_write_desc_status_valid(s_axis_dma_write_desc_status_valid), /* * Receive descriptor output */ .m_axis_rx_desc_addr(dma_rx_desc_addr), .m_axis_rx_desc_len(dma_rx_desc_len), .m_axis_rx_desc_tag(dma_rx_desc_tag), .m_axis_rx_desc_valid(dma_rx_desc_valid), .m_axis_rx_desc_ready(dma_rx_desc_ready), /* * Receive descriptor status input */ .s_axis_rx_desc_status_len(dma_rx_desc_status_len), .s_axis_rx_desc_status_tag(dma_rx_desc_status_tag), .s_axis_rx_desc_status_user(dma_rx_desc_status_user), .s_axis_rx_desc_status_error(dma_rx_desc_status_error), .s_axis_rx_desc_status_valid(dma_rx_desc_status_valid), /* * Receive timestamp input */ .s_axis_rx_ptp_ts_96(s_axis_rx_ptp_ts_96), .s_axis_rx_ptp_ts_valid(s_axis_rx_ptp_ts_valid), .s_axis_rx_ptp_ts_ready(s_axis_rx_ptp_ts_ready), /* * Receive hash input */ .s_axis_rx_hash(rx_fifo_hash), .s_axis_rx_hash_type(rx_fifo_hash_type), .s_axis_rx_hash_valid(rx_fifo_hash_valid), .s_axis_rx_hash_ready(rx_fifo_hash_ready), /* * Receive checksum input */ .s_axis_rx_csum(rx_fifo_csum), .s_axis_rx_csum_valid(rx_fifo_csum_valid), .s_axis_rx_csum_ready(rx_fifo_csum_ready), /* * Configuration */ .mtu(rx_mtu_reg), .enable(1'b1) ); generate if (RX_HASH_ENABLE) begin rx_hash #( .DATA_WIDTH(AXIS_DATA_WIDTH) ) rx_hash_inst ( .clk(clk), .rst(rst), .s_axis_tdata(rx_axis_tdata), .s_axis_tkeep(rx_axis_tkeep), .s_axis_tvalid(rx_axis_tvalid & rx_axis_tready), .s_axis_tlast(rx_axis_tlast), .hash_key(320'h6d5a56da255b0ec24167253d43a38fb0d0ca2bcbae7b30b477cb2da38030f20c6a42b73bbeac01fa), .m_axis_hash(rx_hash), .m_axis_hash_type(rx_hash_type), .m_axis_hash_valid(rx_hash_valid) ); axis_fifo #( .DEPTH(32), .DATA_WIDTH(32+4), .KEEP_ENABLE(0), .LAST_ENABLE(0), .ID_ENABLE(0), .DEST_ENABLE(0), .USER_ENABLE(0), .FRAME_FIFO(0) ) rx_hash_fifo ( .clk(clk), .rst(rst), // AXI input .s_axis_tdata({rx_hash_type, rx_hash}), .s_axis_tkeep(0), .s_axis_tvalid(rx_hash_valid), .s_axis_tready(), .s_axis_tlast(0), .s_axis_tid(0), .s_axis_tdest(0), .s_axis_tuser(0), // AXI output .m_axis_tdata({rx_fifo_hash_type, rx_fifo_hash}), .m_axis_tkeep(), .m_axis_tvalid(rx_fifo_hash_valid), .m_axis_tready(rx_fifo_hash_ready), .m_axis_tlast(), .m_axis_tid(), .m_axis_tdest(), .m_axis_tuser(), // Status .status_overflow(), .status_bad_frame(), .status_good_frame() ); end else begin assign rx_fifo_hash = 32'd0; assign rx_fifo_type = 4'd0; assign rx_fifo_hash_valid = 1'b0; end if (RX_RSS_ENABLE && RX_HASH_ENABLE) begin axis_fifo #( .DEPTH(AXIS_KEEP_WIDTH*32), .DATA_WIDTH(AXIS_DATA_WIDTH), .KEEP_ENABLE(AXIS_KEEP_WIDTH > 1), .KEEP_WIDTH(AXIS_KEEP_WIDTH), .LAST_ENABLE(1), .ID_ENABLE(0), .DEST_ENABLE(0), .USER_ENABLE(1), .USER_WIDTH(1), .FRAME_FIFO(0) ) rx_hash_data_fifo ( .clk(clk), .rst(rst), // AXI input .s_axis_tdata(rx_axis_tdata), .s_axis_tkeep(rx_axis_tkeep), .s_axis_tvalid(rx_axis_tvalid), .s_axis_tready(rx_axis_tready), .s_axis_tlast(rx_axis_tlast), .s_axis_tid(0), .s_axis_tdest(0), .s_axis_tuser(rx_axis_tuser), // AXI output .m_axis_tdata(rx_axis_tdata_int), .m_axis_tkeep(rx_axis_tkeep_int), .m_axis_tvalid(rx_axis_tvalid_int), .m_axis_tready(rx_axis_tready_int), .m_axis_tlast(rx_axis_tlast_int), .m_axis_tid(), .m_axis_tdest(), .m_axis_tuser(rx_axis_tuser_int), // Status .status_overflow(), .status_bad_frame(), .status_good_frame() ); // Generate RX requests (RSS) assign rx_req_tag = 0; axis_fifo #( .DEPTH(32), .DATA_WIDTH(RX_QUEUE_INDEX_WIDTH), .KEEP_ENABLE(0), .LAST_ENABLE(0), .ID_ENABLE(0), .DEST_ENABLE(0), .USER_ENABLE(0), .FRAME_FIFO(0) ) rx_req_fifo ( .clk(clk), .rst(rst), // AXI input .s_axis_tdata(rx_hash & rss_mask_reg), .s_axis_tkeep(0), .s_axis_tvalid(rx_hash_valid), .s_axis_tready(), .s_axis_tlast(0), .s_axis_tid(0), .s_axis_tdest(0), .s_axis_tuser(0), // AXI output .m_axis_tdata(rx_req_queue), .m_axis_tkeep(), .m_axis_tvalid(rx_req_valid), .m_axis_tready(rx_req_ready), .m_axis_tlast(), .m_axis_tid(), .m_axis_tdest(), .m_axis_tuser(), // Status .status_overflow(), .status_bad_frame(), .status_good_frame() ); end else begin assign rx_axis_tdata_int = rx_axis_tdata; assign rx_axis_tkeep_int = rx_axis_tkeep; assign rx_axis_tvalid_int = rx_axis_tvalid; assign rx_axis_tready = rx_axis_tready_int; assign rx_axis_tlast_int = rx_axis_tlast; assign rx_axis_tuser_int = rx_axis_tuser; // Generate RX requests (no RSS) reg rx_frame_reg = 1'b0; reg rx_req_valid_reg = 1'b0; assign rx_req_queue = 0; assign rx_req_tag = 0; assign rx_req_valid = rx_axis_tvalid_int && !rx_frame_reg; always @(posedge clk) begin if (rx_req_ready) begin rx_req_valid_reg <= 1'b0; end if (rx_axis_tready_int && rx_axis_tvalid_int) begin if (!rx_frame_reg) begin rx_req_valid_reg <= 1'b1; end rx_frame_reg <= !rx_axis_tlast_int; end if (rst) begin rx_frame_reg <= 1'b0; rx_req_valid_reg <= 1'b0; end end end if (RX_CHECKSUM_ENABLE) begin rx_checksum #( .DATA_WIDTH(AXIS_DATA_WIDTH) ) rx_checksum_inst ( .clk(clk), .rst(rst), .s_axis_tdata(rx_axis_tdata_int), .s_axis_tkeep(rx_axis_tkeep_int), .s_axis_tvalid(rx_axis_tvalid_int & rx_axis_tready_int), .s_axis_tlast(rx_axis_tlast_int), .m_axis_csum(rx_csum), .m_axis_csum_valid(rx_csum_valid) ); axis_fifo #( .DEPTH(32), .DATA_WIDTH(16), .KEEP_ENABLE(0), .LAST_ENABLE(0), .ID_ENABLE(0), .DEST_ENABLE(0), .USER_ENABLE(0), .FRAME_FIFO(0) ) rx_csum_fifo ( .clk(clk), .rst(rst), // AXI input .s_axis_tdata(rx_csum), .s_axis_tkeep(0), .s_axis_tvalid(rx_csum_valid), .s_axis_tready(), .s_axis_tlast(0), .s_axis_tid(0), .s_axis_tdest(0), .s_axis_tuser(0), // AXI output .m_axis_tdata(rx_fifo_csum), .m_axis_tkeep(), .m_axis_tvalid(rx_fifo_csum_valid), .m_axis_tready(rx_fifo_csum_ready), .m_axis_tlast(), .m_axis_tid(), .m_axis_tdest(), .m_axis_tuser(), // Status .status_overflow(), .status_bad_frame(), .status_good_frame() ); end else begin assign rx_fifo_csum = 16'd0; assign rx_fifo_csum_valid = 1'b0; end if (TX_CHECKSUM_ENABLE) begin axis_fifo #( .DEPTH(32), .DATA_WIDTH(1+8+8), .KEEP_ENABLE(0), .LAST_ENABLE(0), .ID_ENABLE(0), .DEST_ENABLE(0), .USER_ENABLE(0), .FRAME_FIFO(0) ) tx_csum_fifo ( .clk(clk), .rst(rst), // AXI input .s_axis_tdata({tx_csum_cmd_csum_enable, tx_csum_cmd_csum_start, tx_csum_cmd_csum_offset}), .s_axis_tkeep(0), .s_axis_tvalid(tx_csum_cmd_valid), .s_axis_tready(tx_csum_cmd_ready), .s_axis_tlast(0), .s_axis_tid(0), .s_axis_tdest(0), .s_axis_tuser(0), // AXI output .m_axis_tdata({tx_fifo_csum_cmd_csum_enable, tx_fifo_csum_cmd_csum_start, tx_fifo_csum_cmd_csum_offset}), .m_axis_tkeep(), .m_axis_tvalid(tx_fifo_csum_cmd_valid), .m_axis_tready(tx_fifo_csum_cmd_ready), .m_axis_tlast(), .m_axis_tid(), .m_axis_tdest(), .m_axis_tuser(), // Status .status_overflow(), .status_bad_frame(), .status_good_frame() ); tx_checksum #( .DATA_WIDTH(AXIS_DATA_WIDTH), .ID_ENABLE(0), .DEST_ENABLE(0), .USER_ENABLE(1), .USER_WIDTH(1), .USE_INIT_VALUE(0), .DATA_FIFO_DEPTH(MAX_TX_SIZE), .CHECKSUM_FIFO_DEPTH(64) ) tx_checksum_inst ( .clk(clk), .rst(rst), /* * AXI input */ .s_axis_tdata(tx_axis_tdata_int), .s_axis_tkeep(tx_axis_tkeep_int), .s_axis_tvalid(tx_axis_tvalid_int), .s_axis_tready(tx_axis_tready_int), .s_axis_tlast(tx_axis_tlast_int), .s_axis_tid(0), .s_axis_tdest(0), .s_axis_tuser(tx_axis_tuser_int), /* * AXI output */ .m_axis_tdata(tx_axis_tdata), .m_axis_tkeep(tx_axis_tkeep), .m_axis_tvalid(tx_axis_tvalid), .m_axis_tready(tx_axis_tready), .m_axis_tlast(tx_axis_tlast), .m_axis_tid(), .m_axis_tdest(), .m_axis_tuser(tx_axis_tuser), /* * Control */ .s_axis_cmd_csum_enable(tx_fifo_csum_cmd_csum_enable), .s_axis_cmd_csum_start(tx_fifo_csum_cmd_csum_start), .s_axis_cmd_csum_offset(tx_fifo_csum_cmd_csum_offset), .s_axis_cmd_csum_init(16'd0), .s_axis_cmd_valid(tx_fifo_csum_cmd_valid), .s_axis_cmd_ready(tx_fifo_csum_cmd_ready) ); end else begin assign tx_axis_tdata = tx_axis_tdata_int; assign tx_axis_tkeep = tx_axis_tkeep_int; assign tx_axis_tvalid = tx_axis_tvalid_int; assign tx_axis_tready_int = tx_axis_tready; assign tx_axis_tlast = tx_axis_tlast_int; assign tx_axis_tuser = tx_axis_tuser_int; assign tx_csum_cmd_ready = 1'b1; end endgenerate wire [SEG_COUNT*SEG_ADDR_WIDTH-1:0] dma_ram_rd_cmd_addr_int; wire [SEG_COUNT-1:0] dma_ram_rd_cmd_valid_int; wire [SEG_COUNT-1:0] dma_ram_rd_cmd_ready_int; wire [SEG_COUNT*SEG_DATA_WIDTH-1:0] dma_ram_rd_resp_data_int; wire [SEG_COUNT-1:0] dma_ram_rd_resp_valid_int; wire [SEG_COUNT-1:0] dma_ram_rd_resp_ready_int; dma_psdpram #( .SIZE(TX_RAM_SIZE), .SEG_COUNT(SEG_COUNT), .SEG_DATA_WIDTH(SEG_DATA_WIDTH), .SEG_ADDR_WIDTH(SEG_ADDR_WIDTH), .SEG_BE_WIDTH(SEG_BE_WIDTH), .PIPELINE(RAM_PIPELINE) ) dma_psdpram_tx_inst ( .clk(clk), .rst(rst), /* * Write port */ .wr_cmd_be(dma_ram_wr_cmd_be), .wr_cmd_addr(dma_ram_wr_cmd_addr), .wr_cmd_data(dma_ram_wr_cmd_data), .wr_cmd_valid(dma_ram_wr_cmd_valid), .wr_cmd_ready(dma_ram_wr_cmd_ready), .wr_done(dma_ram_wr_done), /* * Read port */ .rd_cmd_addr(dma_ram_rd_cmd_addr_int), .rd_cmd_valid(dma_ram_rd_cmd_valid_int), .rd_cmd_ready(dma_ram_rd_cmd_ready_int), .rd_resp_data(dma_ram_rd_resp_data_int), .rd_resp_valid(dma_ram_rd_resp_valid_int), .rd_resp_ready(dma_ram_rd_resp_ready_int) ); dma_client_axis_source #( .SEG_COUNT(SEG_COUNT), .SEG_DATA_WIDTH(SEG_DATA_WIDTH), .SEG_ADDR_WIDTH(SEG_ADDR_WIDTH), .SEG_BE_WIDTH(SEG_BE_WIDTH), .RAM_ADDR_WIDTH(RAM_ADDR_WIDTH), .AXIS_DATA_WIDTH(AXIS_DATA_WIDTH), .AXIS_KEEP_ENABLE(AXIS_KEEP_WIDTH > 1), .AXIS_KEEP_WIDTH(AXIS_KEEP_WIDTH), .AXIS_LAST_ENABLE(1), .AXIS_ID_ENABLE(0), .AXIS_DEST_ENABLE(0), .AXIS_USER_ENABLE(1), .AXIS_USER_WIDTH(1), .LEN_WIDTH(DMA_CLIENT_LEN_WIDTH), .TAG_WIDTH(DMA_CLIENT_TAG_WIDTH) ) dma_client_axis_source_inst ( .clk(clk), .rst(rst), /* * DMA read descriptor input */ .s_axis_read_desc_ram_addr(dma_tx_desc_addr), .s_axis_read_desc_len(dma_tx_desc_len), .s_axis_read_desc_tag(dma_tx_desc_tag), .s_axis_read_desc_id(0), .s_axis_read_desc_dest(0), .s_axis_read_desc_user(dma_tx_desc_user), .s_axis_read_desc_valid(dma_tx_desc_valid), .s_axis_read_desc_ready(dma_tx_desc_ready), /* * DMA read descriptor status output */ .m_axis_read_desc_status_tag(dma_tx_desc_status_tag), .m_axis_read_desc_status_error(dma_tx_desc_status_error), .m_axis_read_desc_status_valid(dma_tx_desc_status_valid), /* * AXI stream read data output */ .m_axis_read_data_tdata(tx_axis_tdata_int), .m_axis_read_data_tkeep(tx_axis_tkeep_int), .m_axis_read_data_tvalid(tx_axis_tvalid_int), .m_axis_read_data_tready(tx_axis_tready_int), .m_axis_read_data_tlast(tx_axis_tlast_int), .m_axis_read_data_tid(), .m_axis_read_data_tdest(), .m_axis_read_data_tuser(tx_axis_tuser_int), /* * RAM interface */ .ram_rd_cmd_addr(dma_ram_rd_cmd_addr_int), .ram_rd_cmd_valid(dma_ram_rd_cmd_valid_int), .ram_rd_cmd_ready(dma_ram_rd_cmd_ready_int), .ram_rd_resp_data(dma_ram_rd_resp_data_int), .ram_rd_resp_valid(dma_ram_rd_resp_valid_int), .ram_rd_resp_ready(dma_ram_rd_resp_ready_int), /* * Configuration */ .enable(1'b1) ); wire [SEG_COUNT*SEG_BE_WIDTH-1:0] dma_ram_wr_cmd_be_int; wire [SEG_COUNT*SEG_ADDR_WIDTH-1:0] dma_ram_wr_cmd_addr_int; wire [SEG_COUNT*SEG_DATA_WIDTH-1:0] dma_ram_wr_cmd_data_int; wire [SEG_COUNT-1:0] dma_ram_wr_cmd_valid_int; wire [SEG_COUNT-1:0] dma_ram_wr_cmd_ready_int; wire [SEG_COUNT-1:0] dma_ram_wr_done_int; dma_psdpram #( .SIZE(RX_RAM_SIZE), .SEG_COUNT(SEG_COUNT), .SEG_DATA_WIDTH(SEG_DATA_WIDTH), .SEG_ADDR_WIDTH(SEG_ADDR_WIDTH), .SEG_BE_WIDTH(SEG_BE_WIDTH), .PIPELINE(RAM_PIPELINE) ) dma_psdpram_rx_inst ( .clk(clk), .rst(rst), /* * Write port */ .wr_cmd_be(dma_ram_wr_cmd_be_int), .wr_cmd_addr(dma_ram_wr_cmd_addr_int), .wr_cmd_data(dma_ram_wr_cmd_data_int), .wr_cmd_valid(dma_ram_wr_cmd_valid_int), .wr_cmd_ready(dma_ram_wr_cmd_ready_int), .wr_done(dma_ram_wr_done_int), /* * Read port */ .rd_cmd_addr(dma_ram_rd_cmd_addr), .rd_cmd_valid(dma_ram_rd_cmd_valid), .rd_cmd_ready(dma_ram_rd_cmd_ready), .rd_resp_data(dma_ram_rd_resp_data), .rd_resp_valid(dma_ram_rd_resp_valid), .rd_resp_ready(dma_ram_rd_resp_ready) ); dma_client_axis_sink #( .SEG_COUNT(SEG_COUNT), .SEG_DATA_WIDTH(SEG_DATA_WIDTH), .SEG_ADDR_WIDTH(SEG_ADDR_WIDTH), .SEG_BE_WIDTH(SEG_BE_WIDTH), .RAM_ADDR_WIDTH(RAM_ADDR_WIDTH), .AXIS_DATA_WIDTH(AXIS_DATA_WIDTH), .AXIS_KEEP_ENABLE(AXIS_KEEP_WIDTH > 1), .AXIS_KEEP_WIDTH(AXIS_KEEP_WIDTH), .AXIS_LAST_ENABLE(1), .AXIS_ID_ENABLE(0), .AXIS_DEST_ENABLE(0), .AXIS_USER_ENABLE(1), .AXIS_USER_WIDTH(1), .LEN_WIDTH(DMA_CLIENT_LEN_WIDTH), .TAG_WIDTH(DMA_CLIENT_TAG_WIDTH) ) dma_client_axis_sink_inst ( .clk(clk), .rst(rst), /* * DMA write descriptor input */ .s_axis_write_desc_ram_addr(dma_rx_desc_addr), .s_axis_write_desc_len(dma_rx_desc_len), .s_axis_write_desc_tag(dma_rx_desc_tag), .s_axis_write_desc_valid(dma_rx_desc_valid), .s_axis_write_desc_ready(dma_rx_desc_ready), /* * DMA write descriptor status output */ .m_axis_write_desc_status_len(dma_rx_desc_status_len), .m_axis_write_desc_status_tag(dma_rx_desc_status_tag), .m_axis_write_desc_status_id(), .m_axis_write_desc_status_dest(), .m_axis_write_desc_status_user(dma_rx_desc_status_user), .m_axis_write_desc_status_error(dma_rx_desc_status_error), .m_axis_write_desc_status_valid(dma_rx_desc_status_valid), /* * AXI stream write data input */ .s_axis_write_data_tdata(rx_axis_tdata_int), .s_axis_write_data_tkeep(rx_axis_tkeep_int), .s_axis_write_data_tvalid(rx_axis_tvalid_int), .s_axis_write_data_tready(rx_axis_tready_int), .s_axis_write_data_tlast(rx_axis_tlast_int), .s_axis_write_data_tid(0), .s_axis_write_data_tdest(0), .s_axis_write_data_tuser(rx_axis_tuser_int), /* * RAM interface */ .ram_wr_cmd_be(dma_ram_wr_cmd_be_int), .ram_wr_cmd_addr(dma_ram_wr_cmd_addr_int), .ram_wr_cmd_data(dma_ram_wr_cmd_data_int), .ram_wr_cmd_valid(dma_ram_wr_cmd_valid_int), .ram_wr_cmd_ready(dma_ram_wr_cmd_ready_int), .ram_wr_done(dma_ram_wr_done_int), /* * Configuration */ .enable(1'b1), .abort(1'b0) ); endmodule