Files
taxi/example/Alveo/fpga/rtl/fpga_core.sv
2025-04-17 00:34:53 -07:00

562 lines
14 KiB
Systemverilog

// SPDX-License-Identifier: MIT
/*
Copyright (c) 2014-2025 FPGA Ninja, LLC
Authors:
- Alex Forencich
*/
`resetall
`timescale 1ns / 1ps
`default_nettype none
/*
* FPGA core logic
*/
module fpga_core #
(
parameter logic SIM = 1'b0,
parameter string VENDOR = "XILINX",
parameter string FAMILY = "virtexuplus",
parameter SW_CNT = 4,
parameter LED_CNT = 3,
parameter UART_CNT = 1,
parameter PORT_CNT = 2,
parameter PORT_LED_CNT = PORT_CNT,
parameter GTY_QUAD_CNT = PORT_CNT,
parameter GTY_CNT = GTY_QUAD_CNT*4,
parameter GTY_CLK_CNT = GTY_QUAD_CNT
)
(
/*
* Clock: 125MHz
* Synchronous reset
*/
input wire clk_125mhz,
input wire rst_125mhz,
/*
* GPIO
*/
input wire [SW_CNT-1:0] sw,
output wire [LED_CNT-1:0] led,
output wire [PORT_LED_CNT-1:0] port_led_act,
output wire [PORT_LED_CNT-1:0] port_led_stat_r,
output wire [PORT_LED_CNT-1:0] port_led_stat_g,
output wire [PORT_LED_CNT-1:0] port_led_stat_b,
output wire [PORT_LED_CNT-1:0] port_led_stat_y,
/*
* UART
*/
output wire [UART_CNT-1:0] uart_txd,
input wire [UART_CNT-1:0] uart_rxd,
/*
* Ethernet
*/
output wire logic [GTY_CNT-1:0] eth_gty_tx_p,
output wire logic [GTY_CNT-1:0] eth_gty_tx_n,
input wire logic [GTY_CNT-1:0] eth_gty_rx_p,
input wire logic [GTY_CNT-1:0] eth_gty_rx_n,
input wire logic [GTY_CLK_CNT-1:0] eth_gty_mgt_refclk_p,
input wire logic [GTY_CLK_CNT-1:0] eth_gty_mgt_refclk_n,
output wire logic [GTY_CLK_CNT-1:0] eth_gty_mgt_refclk_out,
output wire logic [PORT_CNT-1:0] eth_port_modsell,
output wire logic [PORT_CNT-1:0] eth_port_resetl,
input wire logic [PORT_CNT-1:0] eth_port_modprsl,
input wire logic [PORT_CNT-1:0] eth_port_intl,
output wire logic [PORT_CNT-1:0] eth_port_lpmode
);
// XFCP
taxi_axis_if #(.DATA_W(8), .USER_EN(1), .USER_W(1)) xfcp_ds(), xfcp_us();
taxi_xfcp_if_uart #(
.TX_FIFO_DEPTH(512),
.RX_FIFO_DEPTH(512)
)
xfcp_if_uart_inst (
.clk(clk_125mhz),
.rst(rst_125mhz),
/*
* UART interface
*/
.uart_rxd(uart_rxd),
.uart_txd(uart_txd),
/*
* XFCP downstream interface
*/
.xfcp_dsp_ds(xfcp_ds),
.xfcp_dsp_us(xfcp_us),
/*
* Configuration
*/
.prescale(16'(125000000/3000000))
);
taxi_axis_if #(.DATA_W(8), .USER_EN(1), .USER_W(1)) xfcp_sw_ds[1](), xfcp_sw_us[1]();
taxi_xfcp_switch #(
.XFCP_ID_STR("Alveo"),
.XFCP_EXT_ID(0),
.XFCP_EXT_ID_STR("Taxi example"),
.PORTS($size(xfcp_sw_us))
)
xfcp_sw_inst (
.clk(clk_125mhz),
.rst(rst_125mhz),
/*
* XFCP upstream port
*/
.xfcp_usp_ds(xfcp_ds),
.xfcp_usp_us(xfcp_us),
/*
* XFCP downstream ports
*/
.xfcp_dsp_ds(xfcp_sw_ds),
.xfcp_dsp_us(xfcp_sw_us)
);
taxi_axis_if #(.DATA_W(16), .KEEP_W(1), .KEEP_EN(0), .LAST_EN(0), .USER_EN(1), .USER_W(1), .ID_EN(1), .ID_W(10)) axis_stat();
taxi_xfcp_mod_stats #(
.XFCP_ID_STR("Statistics"),
.XFCP_EXT_ID(0),
.XFCP_EXT_ID_STR(""),
.STAT_COUNT_W(64),
.STAT_PIPELINE(2)
)
xfcp_stats_inst (
.clk(clk_125mhz),
.rst(rst_125mhz),
/*
* XFCP upstream port
*/
.xfcp_usp_ds(xfcp_sw_ds[0]),
.xfcp_usp_us(xfcp_sw_us[0]),
/*
* Statistics increment input
*/
.s_axis_stat(axis_stat)
);
taxi_axis_if #(.DATA_W(16), .KEEP_W(1), .KEEP_EN(0), .LAST_EN(0), .USER_EN(1), .USER_W(1), .ID_EN(1), .ID_W(10)) axis_eth_stat[GTY_QUAD_CNT]();
taxi_axis_arb_mux #(
.S_COUNT($size(axis_eth_stat)),
.UPDATE_TID(1'b0),
.ARB_ROUND_ROBIN(1'b1),
.ARB_LSB_HIGH_PRIO(1'b0)
)
stat_mux_inst (
.clk(clk_125mhz),
.rst(rst_125mhz),
/*
* AXI4-Stream inputs (sink)
*/
.s_axis(axis_eth_stat),
/*
* AXI4-Stream output (source)
*/
.m_axis(axis_stat)
);
// Additional UARTs
for (genvar n = 1; n < UART_CNT; n = n + 1) begin : uart_ch
taxi_axis_if #(.DATA_W(8)) axis_uart();
taxi_uart
uart_inst (
.clk(clk_125mhz),
.rst(rst_125mhz),
/*
* AXI4-Stream input (sink)
*/
.s_axis_tx(axis_uart),
/*
* AXI4-Stream output (source)
*/
.m_axis_rx(axis_uart),
/*
* UART interface
*/
.rxd(uart_rxd[n]),
.txd(uart_txd[n]),
/*
* Status
*/
.tx_busy(),
.rx_busy(),
.rx_overrun_error(),
.rx_frame_error(),
/*
* Configuration
*/
.prescale(16'(125000000/115200))
);
end
// Ethernet
assign eth_port_modsell = '1;
assign eth_port_resetl = '1;
assign eth_port_lpmode = '0;
wire [GTY_CNT-1:0] eth_gty_tx_clk;
wire [GTY_CNT-1:0] eth_gty_tx_rst;
taxi_axis_if #(.DATA_W(64), .ID_W(8)) eth_gty_axis_tx[GTY_CNT]();
taxi_axis_if #(.DATA_W(96), .KEEP_W(1), .ID_W(8)) eth_gty_axis_tx_cpl[GTY_CNT]();
wire [GTY_CNT-1:0] eth_gty_rx_clk;
wire [GTY_CNT-1:0] eth_gty_rx_rst;
taxi_axis_if #(.DATA_W(64), .ID_W(8)) eth_gty_axis_rx[GTY_CNT]();
wire [GTY_CNT-1:0] eth_gty_rx_status;
wire [GTY_QUAD_CNT-1:0] eth_gty_gtpowergood;
wire [GTY_CLK_CNT-1:0] eth_gty_mgt_refclk;
wire [GTY_CLK_CNT-1:0] eth_gty_mgt_refclk_bufg;
wire [GTY_CLK_CNT-1:0] eth_gty_rst;
for (genvar n = 0; n < GTY_CLK_CNT; n = n + 1) begin : gty_clk
wire eth_gty_mgt_refclk_int;
if (SIM) begin
assign eth_gty_mgt_refclk[n] = eth_gty_mgt_refclk_p[n];
assign eth_gty_mgt_refclk_int = eth_gty_mgt_refclk_p[n];
assign eth_gty_mgt_refclk_bufg[n] = eth_gty_mgt_refclk_int;
end else begin
IBUFDS_GTE4 ibufds_gte4_eth_gty_mgt_refclk_inst (
.I (eth_gty_mgt_refclk_p[n]),
.IB (eth_gty_mgt_refclk_n[n]),
.CEB (1'b0),
.O (eth_gty_mgt_refclk[n]),
.ODIV2 (eth_gty_mgt_refclk_int)
);
BUFG_GT bufg_gt_eth_gty_mgt_refclk_inst (
.CE (&eth_gty_gtpowergood),
.CEMASK (1'b1),
.CLR (1'b0),
.CLRMASK (1'b1),
.DIV (3'd0),
.I (eth_gty_mgt_refclk_int),
.O (eth_gty_mgt_refclk_bufg[n])
);
end
assign eth_gty_mgt_refclk_out[n] = eth_gty_mgt_refclk_bufg[n];
taxi_sync_reset #(
.N(4)
)
qsfp_sync_reset_inst (
.clk(eth_gty_mgt_refclk_bufg[n]),
.rst(rst_125mhz),
.out(eth_gty_rst[n])
);
end
localparam logic [8*8-1:0] STAT_PREFIX_STR_QSFP1[4] = '{"QSFP1.1", "QSFP1.2", "QSFP1.3", "QSFP1.4"};
localparam logic [8*8-1:0] STAT_PREFIX_STR_QSFP2[4] = '{"QSFP2.1", "QSFP2.2", "QSFP2.3", "QSFP2.4"};
for (genvar n = 0; n < GTY_QUAD_CNT; n = n + 1) begin : gty_quad
localparam CLK = n;
localparam CNT = 4;
taxi_eth_mac_25g_us #(
.SIM(SIM),
.VENDOR(VENDOR),
.FAMILY(FAMILY),
.CNT(CNT),
// GT type
.GT_TYPE("GTY"),
// PHY parameters
.PADDING_EN(1'b1),
.DIC_EN(1'b1),
.MIN_FRAME_LEN(64),
.PTP_TS_EN(1'b0),
.PTP_TS_FMT_TOD(1'b1),
.PTP_TS_W(96),
.PRBS31_EN(1'b0),
.TX_SERDES_PIPELINE(1),
.RX_SERDES_PIPELINE(1),
.COUNT_125US(125000/6.4),
.STAT_EN(1),
.STAT_TX_LEVEL(1),
.STAT_RX_LEVEL(1),
.STAT_ID_BASE(n*CNT*(16+16)),
.STAT_UPDATE_PERIOD(1024),
.STAT_STR_EN(1),
.STAT_PREFIX_STR(n == 0 ? STAT_PREFIX_STR_QSFP1 : STAT_PREFIX_STR_QSFP2)
)
mac_inst (
.xcvr_ctrl_clk(clk_125mhz),
.xcvr_ctrl_rst(eth_gty_rst[CLK]),
/*
* Common
*/
.xcvr_gtpowergood_out(eth_gty_gtpowergood[n]),
.xcvr_gtrefclk00_in(eth_gty_mgt_refclk[CLK]),
.xcvr_qpll0lock_out(),
.xcvr_qpll0clk_out(),
.xcvr_qpll0refclk_out(),
/*
* Serial data
*/
.xcvr_txp(eth_gty_tx_p[n*CNT +: CNT]),
.xcvr_txn(eth_gty_tx_n[n*CNT +: CNT]),
.xcvr_rxp(eth_gty_rx_p[n*CNT +: CNT]),
.xcvr_rxn(eth_gty_rx_n[n*CNT +: CNT]),
/*
* MAC clocks
*/
.rx_clk(eth_gty_rx_clk[n*CNT +: CNT]),
.rx_rst_in('0),
.rx_rst_out(eth_gty_rx_rst[n*CNT +: CNT]),
.tx_clk(eth_gty_tx_clk[n*CNT +: CNT]),
.tx_rst_in('0),
.tx_rst_out(eth_gty_tx_rst[n*CNT +: CNT]),
.ptp_sample_clk('0),
/*
* Transmit interface (AXI stream)
*/
.s_axis_tx(eth_gty_axis_tx[n*CNT +: CNT]),
.m_axis_tx_cpl(eth_gty_axis_tx_cpl[n*CNT +: CNT]),
/*
* Receive interface (AXI stream)
*/
.m_axis_rx(eth_gty_axis_rx[n*CNT +: CNT]),
/*
* PTP clock
*/
.tx_ptp_ts('{CNT{'0}}),
.tx_ptp_ts_step('0),
.rx_ptp_ts('{CNT{'0}}),
.rx_ptp_ts_step('0),
/*
* Link-level Flow Control (LFC) (IEEE 802.3 annex 31B PAUSE)
*/
.tx_lfc_req('0),
.tx_lfc_resend('0),
.rx_lfc_en('0),
.rx_lfc_req(),
.rx_lfc_ack('0),
/*
* Priority Flow Control (PFC) (IEEE 802.3 annex 31D PFC)
*/
.tx_pfc_req('{CNT{'0}}),
.tx_pfc_resend('0),
.rx_pfc_en('{CNT{'0}}),
.rx_pfc_req(),
.rx_pfc_ack('{CNT{'0}}),
/*
* Pause interface
*/
.tx_lfc_pause_en('0),
.tx_pause_req('0),
.tx_pause_ack(),
/*
* Statistics
*/
.stat_clk(clk_125mhz),
.stat_rst(rst_125mhz),
.m_axis_stat(axis_eth_stat[n]),
/*
* Status
*/
.tx_start_packet(),
.stat_tx_byte(),
.stat_tx_pkt_len(),
.stat_tx_pkt_ucast(),
.stat_tx_pkt_mcast(),
.stat_tx_pkt_bcast(),
.stat_tx_pkt_vlan(),
.stat_tx_pkt_good(),
.stat_tx_pkt_bad(),
.stat_tx_err_oversize(),
.stat_tx_err_user(),
.stat_tx_err_underflow(),
.rx_start_packet(),
.rx_error_count(),
.rx_block_lock(),
.rx_high_ber(),
.rx_status(eth_gty_rx_status[n*CNT +: CNT]),
.stat_rx_byte(),
.stat_rx_pkt_len(),
.stat_rx_pkt_fragment(),
.stat_rx_pkt_jabber(),
.stat_rx_pkt_ucast(),
.stat_rx_pkt_mcast(),
.stat_rx_pkt_bcast(),
.stat_rx_pkt_vlan(),
.stat_rx_pkt_good(),
.stat_rx_pkt_bad(),
.stat_rx_err_oversize(),
.stat_rx_err_bad_fcs(),
.stat_rx_err_bad_block(),
.stat_rx_err_framing(),
.stat_rx_err_preamble(),
.stat_rx_fifo_drop('0),
.stat_tx_mcf(),
.stat_rx_mcf(),
.stat_tx_lfc_pkt(),
.stat_tx_lfc_xon(),
.stat_tx_lfc_xoff(),
.stat_tx_lfc_paused(),
.stat_tx_pfc_pkt(),
.stat_tx_pfc_xon(),
.stat_tx_pfc_xoff(),
.stat_tx_pfc_paused(),
.stat_rx_lfc_pkt(),
.stat_rx_lfc_xon(),
.stat_rx_lfc_xoff(),
.stat_rx_lfc_paused(),
.stat_rx_pfc_pkt(),
.stat_rx_pfc_xon(),
.stat_rx_pfc_xoff(),
.stat_rx_pfc_paused(),
/*
* Configuration
*/
.cfg_tx_max_pkt_len('{CNT{16'd9218}}),
.cfg_tx_ifg('{CNT{8'd12}}),
.cfg_tx_enable('1),
.cfg_rx_max_pkt_len('{CNT{16'd9218}}),
.cfg_rx_enable('1),
.cfg_tx_prbs31_enable('0),
.cfg_rx_prbs31_enable('0),
.cfg_mcf_rx_eth_dst_mcast('{CNT{48'h01_80_C2_00_00_01}}),
.cfg_mcf_rx_check_eth_dst_mcast('1),
.cfg_mcf_rx_eth_dst_ucast('{CNT{48'd0}}),
.cfg_mcf_rx_check_eth_dst_ucast('0),
.cfg_mcf_rx_eth_src('{CNT{48'd0}}),
.cfg_mcf_rx_check_eth_src('0),
.cfg_mcf_rx_eth_type('{CNT{16'h8808}}),
.cfg_mcf_rx_opcode_lfc('{CNT{16'h0001}}),
.cfg_mcf_rx_check_opcode_lfc('1),
.cfg_mcf_rx_opcode_pfc('{CNT{16'h0101}}),
.cfg_mcf_rx_check_opcode_pfc('1),
.cfg_mcf_rx_forward('0),
.cfg_mcf_rx_enable('0),
.cfg_tx_lfc_eth_dst('{CNT{48'h01_80_C2_00_00_01}}),
.cfg_tx_lfc_eth_src('{CNT{48'h80_23_31_43_54_4C}}),
.cfg_tx_lfc_eth_type('{CNT{16'h8808}}),
.cfg_tx_lfc_opcode('{CNT{16'h0001}}),
.cfg_tx_lfc_en('0),
.cfg_tx_lfc_quanta('{CNT{16'hffff}}),
.cfg_tx_lfc_refresh('{CNT{16'h7fff}}),
.cfg_tx_pfc_eth_dst('{CNT{48'h01_80_C2_00_00_01}}),
.cfg_tx_pfc_eth_src('{CNT{48'h80_23_31_43_54_4C}}),
.cfg_tx_pfc_eth_type('{CNT{16'h8808}}),
.cfg_tx_pfc_opcode('{CNT{16'h0101}}),
.cfg_tx_pfc_en('0),
.cfg_tx_pfc_quanta('{CNT{'{8{16'hffff}}}}),
.cfg_tx_pfc_refresh('{CNT{'{8{16'h7fff}}}}),
.cfg_rx_lfc_opcode('{CNT{16'h0001}}),
.cfg_rx_lfc_en('0),
.cfg_rx_pfc_opcode('{CNT{16'h0101}}),
.cfg_rx_pfc_en('0)
);
end
for (genvar n = 0; n < GTY_CNT; n = n + 1) begin : gty_ch
taxi_axis_async_fifo #(
.DEPTH(16384),
.RAM_PIPELINE(2),
.FRAME_FIFO(1),
.USER_BAD_FRAME_VALUE(1'b1),
.USER_BAD_FRAME_MASK(1'b1),
.DROP_OVERSIZE_FRAME(1),
.DROP_BAD_FRAME(1),
.DROP_WHEN_FULL(1)
)
ch_fifo (
/*
* AXI4-Stream input (sink)
*/
.s_clk(eth_gty_rx_clk[n]),
.s_rst(eth_gty_rx_rst[n]),
.s_axis(eth_gty_axis_rx[n]),
/*
* AXI4-Stream output (source)
*/
.m_clk(eth_gty_tx_clk[n]),
.m_rst(eth_gty_tx_rst[n]),
.m_axis(eth_gty_axis_tx[n]),
/*
* Pause
*/
.s_pause_req(1'b0),
.s_pause_ack(),
.m_pause_req(1'b0),
.m_pause_ack(),
/*
* Status
*/
.s_status_depth(),
.s_status_depth_commit(),
.s_status_overflow(),
.s_status_bad_frame(),
.s_status_good_frame(),
.m_status_depth(),
.m_status_depth_commit(),
.m_status_overflow(),
.m_status_bad_frame(),
.m_status_good_frame()
);
end
endmodule
`resetall