2 module simple_gemac_wrapper
3 (input clk125, input reset,
5 output GMII_GTX_CLK, output GMII_TX_EN, output GMII_TX_ER, output [7:0] GMII_TXD,
6 input GMII_RX_CLK, input GMII_RX_DV, input GMII_RX_ER, input [7:0] GMII_RXD,
8 // Flow Control Interface
9 input pause_req, input [15:0] pause_time,
11 // Client FIFO Interfaces
13 output [35:0] rx_f36_data, output rx_f36_src_rdy, input rx_f36_dst_rdy,
14 input [35:0] tx_f36_data, input tx_f36_src_rdy, output tx_f36_dst_rdy,
17 input wb_clk, input wb_rst, input wb_stb, input wb_cyc, output wb_ack, input wb_we,
18 input [7:0] wb_adr, input [31:0] wb_dat_i, output [31:0] wb_dat_o,
21 inout mdio, output mdc,
24 wire [7:0] rx_data, tx_data;
25 wire tx_clk, tx_valid, tx_error, tx_ack;
26 wire rx_clk, rx_valid, rx_error, rx_ack;
28 wire [47:0] ucast_addr, mcast_addr;
29 wire pass_ucast, pass_mcast, pass_bcast, pass_pause, pass_all, pause_en;
31 wire rst_rxclk, rst_txclk;
32 reset_sync reset_sync_tx (.clk(tx_clk),.reset_in(reset),.reset_out(tx_reset));
33 reset_sync reset_sync_rx (.clk(rx_clk),.reset_in(reset),.reset_out(rx_reset));
35 simple_gemac simple_gemac
36 (.clk125(clk125), .reset(reset),
37 .GMII_GTX_CLK(GMII_GTX_CLK), .GMII_TX_EN(GMII_TX_EN),
38 .GMII_TX_ER(GMII_TX_ER), .GMII_TXD(GMII_TXD),
39 .GMII_RX_CLK(GMII_RX_CLK), .GMII_RX_DV(GMII_RX_DV),
40 .GMII_RX_ER(GMII_RX_ER), .GMII_RXD(GMII_RXD),
41 .pause_req(pause_req), .pause_time(pause_time), .pause_en(1),
42 .ucast_addr(ucast_addr), .mcast_addr(mcast_addr),
43 .pass_ucast(pass_ucast), .pass_mcast(pass_mcast), .pass_bcast(pass_bcast),
44 .pass_pause(pass_pause), .pass_all(pass_all),
45 .rx_clk(rx_clk), .rx_data(rx_data),
46 .rx_valid(rx_valid), .rx_error(rx_error), .rx_ack(rx_ack),
47 .tx_clk(tx_clk), .tx_data(tx_data),
48 .tx_valid(tx_valid), .tx_error(tx_error), .tx_ack(tx_ack)
51 simple_gemac_wb simple_gemac_wb
52 (.wb_clk(wb_clk), .wb_rst(wb_rst),
53 .wb_cyc(wb_cyc), .wb_stb(wb_stb), .wb_ack(wb_ack), .wb_we(wb_we),
54 .wb_adr(wb_adr), .wb_dat_i(wb_dat_i), .wb_dat_o(wb_dat_o),
55 .mdio(mdio), .mdc(mdc),
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), .pause_en(pause_en) );
61 wire rx_ll_sof, rx_ll_eof, rx_ll_src_rdy, rx_ll_dst_rdy;
62 wire rx_ll_sof2, rx_ll_eof2, rx_ll_src_rdy2_n, rx_ll_dst_rdy2;
63 wire [7:0] rx_ll_data, rx_ll_data2;
64 wire [35:0] rx_f36_data_int1;
65 wire rx_f36_src_rdy_int1, rx_f36_dst_rdy_int1;
68 (.clk(rx_clk), .reset(rx_reset), .clear(0),
69 .rx_data(rx_data), .rx_valid(rx_valid), .rx_error(rx_error), .rx_ack(rx_ack),
70 .ll_data(rx_ll_data), .ll_sof(rx_ll_sof), .ll_eof(rx_ll_eof), .ll_error(rx_ll_error),
71 .ll_src_rdy(rx_ll_src_rdy), .ll_dst_rdy(rx_ll_dst_rdy));
73 ll8_shortfifo rx_sfifo
74 (.clk(rx_clk), .reset(rx_reset), .clear(0),
75 .datain(rx_ll_data), .sof_i(rx_ll_sof), .eof_i(rx_ll_eof),
76 .error_i(rx_ll_error), .src_rdy_i(rx_ll_src_rdy), .dst_rdy_o(rx_ll_dst_rdy),
77 .dataout(rx_ll_data2), .sof_o(rx_ll_sof2), .eof_o(rx_ll_eof2),
78 .error_o(rx_ll_error2), .src_rdy_o(rx_ll_src_rdy2), .dst_rdy_i(~rx_ll_dst_rdy2_n));
80 ll8_to_fifo36 ll8_to_fifo36
81 (.clk(rx_clk), .reset(rx_reset), .clear(0),
82 .ll_data(rx_ll_data2), .ll_sof_n(~rx_ll_sof2), .ll_eof_n(~rx_ll_eof2),
83 .ll_src_rdy_n(~rx_ll_src_rdy2), .ll_dst_rdy_n(rx_ll_dst_rdy2_n),
84 .f36_data(rx_f36_data_int1), .f36_src_rdy_o(rx_f36_src_rdy_int1), .f36_dst_rdy_i(rx_f36_dst_rdy_int1));
86 cascadefifo_2clock #(.DWIDTH(36), .AWIDTH(9)) rx_2clk_fifo
87 (.wclk(rx_clk), .datain(rx_f36_data_int1),
88 .src_rdy_i(rx_f36_src_rdy_int1), .dst_rdy_o(rx_f36_dst_rdy_int1), .level_wclk(),
89 .rclk(sys_clk), .dataout(rx_f36_data),
90 .src_rdy_o(rx_f36_src_rdy), .dst_rdy_i(rx_f36_dst_rdy), .level_rclk(), .arst(reset));
93 wire tx_ll_sof, tx_ll_eof, tx_ll_src_rdy, tx_ll_dst_rdy;
94 wire tx_ll_sof2, tx_ll_eof2, tx_ll_src_rdy2, tx_ll_dst_rdy2;
95 wire tx_ll_sof2_n, tx_ll_eof2_n, tx_ll_src_rdy2_n, tx_ll_dst_rdy2_n;
96 wire [7:0] tx_ll_data, tx_ll_data2;
97 wire [35:0] tx_f36_data_int1;
98 wire tx_f36_src_rdy_int1, tx_f36_dst_rdy_int1;
100 cascadefifo_2clock #(.DWIDTH(36), .AWIDTH(9)) tx_2clk_fifo
101 (.wclk(sys_clk), .datain(tx_f36_data),
102 .src_rdy_i(tx_f36_src_rdy), .dst_rdy_o(tx_f36_dst_rdy), .level_wclk(),
103 .rclk(tx_clk), .dataout(tx_f36_data_int1),
104 .src_rdy_o(tx_f36_src_rdy_int1), .dst_rdy_i(tx_f36_dst_rdy_int1), .level_rclk(), .arst(reset));
106 fifo36_to_ll8 fifo36_to_ll8
107 (.clk(tx_clk), .reset(tx_reset), .clear(clear),
108 .f36_data(tx_f36_data_int1), .f36_src_rdy_i(tx_f36_src_rdy_int1), .f36_dst_rdy_o(tx_f36_dst_rdy_int1),
109 .ll_data(tx_ll_data2), .ll_sof_n(tx_ll_sof2_n), .ll_eof_n(tx_ll_eof2_n),
110 .ll_src_rdy_n(tx_ll_src_rdy2_n), .ll_dst_rdy_n(tx_ll_dst_rdy2_n));
112 assign tx_ll_sof2 = ~tx_ll_sof2_n;
113 assign tx_ll_eof2 = ~tx_ll_eof2_n;
114 assign tx_ll_src_rdy2 = ~tx_ll_src_rdy2_n;
115 assign tx_ll_dst_rdy2_n = ~tx_ll_dst_rdy2;
117 ll8_shortfifo tx_sfifo
118 (.clk(rx_clk), .reset(tx_reset), .clear(clear),
119 .datain(tx_ll_data2), .sof_i(tx_ll_sof2), .eof_i(tx_ll_eof2),
120 .error_i(0), .src_rdy_i(tx_ll_src_rdy2), .dst_rdy_o(tx_ll_dst_rdy2),
121 .dataout(tx_ll_data), .sof_o(tx_ll_sof), .eof_o(tx_ll_eof),
122 .error_o(), .src_rdy_o(tx_ll_src_rdy), .dst_rdy_i(tx_ll_dst_rdy));
124 ll8_to_txmac ll8_to_txmac
125 (.clk(tx_clk), .reset(tx_reset), .clear(clear),
126 .ll_data(tx_ll_data), .ll_sof(tx_ll_sof), .ll_eof(tx_ll_eof),
127 .ll_src_rdy(tx_ll_src_rdy), .ll_dst_rdy(tx_ll_dst_rdy),
128 .tx_data(tx_data), .tx_valid(tx_valid), .tx_error(tx_error), .tx_ack(tx_ack));
130 assign debug = { { tx_ll_data },
131 { tx_ll_sof, tx_ll_eof, tx_ll_src_rdy, tx_ll_dst_rdy,
132 tx_ll_sof2, tx_ll_eof2, tx_ll_src_rdy2, tx_ll_dst_rdy2 },
133 { tx_valid, tx_error, tx_ack, tx_f36_src_rdy_int1, tx_f36_dst_rdy_int1, tx_f36_data_int1[34:32]},
135 endmodule // simple_gemac_wrapper