diff options
Diffstat (limited to 'fpga/usrp2/simple_gemac/simple_gemac_wrapper.v')
| -rw-r--r-- | fpga/usrp2/simple_gemac/simple_gemac_wrapper.v | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/fpga/usrp2/simple_gemac/simple_gemac_wrapper.v b/fpga/usrp2/simple_gemac/simple_gemac_wrapper.v new file mode 100644 index 000000000..ec09379ed --- /dev/null +++ b/fpga/usrp2/simple_gemac/simple_gemac_wrapper.v @@ -0,0 +1,175 @@ +// +// Copyright 2011 Ettus Research LLC +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. +// + + +module simple_gemac_wrapper + #(parameter RXFIFOSIZE=9, + parameter TXFIFOSIZE=9, + parameter RX_FLOW_CTRL=0) + (input clk125, input reset, + // GMII + output GMII_GTX_CLK, output GMII_TX_EN, output GMII_TX_ER, output [7:0] GMII_TXD, + input GMII_RX_CLK, input GMII_RX_DV, input GMII_RX_ER, input [7:0] GMII_RXD, + + // Client FIFO Interfaces + input sys_clk, + output [35:0] rx_f36_data, output rx_f36_src_rdy, input rx_f36_dst_rdy, + input [35:0] tx_f36_data, input tx_f36_src_rdy, output tx_f36_dst_rdy, + + // Wishbone Interface + input wb_clk, input wb_rst, input wb_stb, input wb_cyc, output wb_ack, input wb_we, + input [7:0] wb_adr, input [31:0] wb_dat_i, output [31:0] wb_dat_o, + + // MIIM + inout mdio, output mdc, + output [31:0] debug); + + wire clear = 0; + wire [7:0] rx_data, tx_data; + wire tx_clk, tx_valid, tx_error, tx_ack; + wire rx_clk, rx_valid, rx_error, rx_ack; + + wire [47:0] ucast_addr, mcast_addr; + wire pass_ucast, pass_mcast, pass_bcast, pass_pause, pass_all; + wire pause_req; + wire pause_request_en, pause_respect_en; + wire [15:0] pause_time, pause_thresh, pause_time_req, rx_fifo_space; + + wire [31:0] debug_state; + + wire tx_reset, rx_reset; + reset_sync reset_sync_tx (.clk(tx_clk),.reset_in(reset),.reset_out(tx_reset)); + reset_sync reset_sync_rx (.clk(rx_clk),.reset_in(reset),.reset_out(rx_reset)); + + simple_gemac simple_gemac + (.clk125(clk125), .reset(reset), + .GMII_GTX_CLK(GMII_GTX_CLK), .GMII_TX_EN(GMII_TX_EN), + .GMII_TX_ER(GMII_TX_ER), .GMII_TXD(GMII_TXD), + .GMII_RX_CLK(GMII_RX_CLK), .GMII_RX_DV(GMII_RX_DV), + .GMII_RX_ER(GMII_RX_ER), .GMII_RXD(GMII_RXD), + .pause_req(RX_FLOW_CTRL ? pause_req : 1'b0), .pause_time_req(RX_FLOW_CTRL ? pause_time_req : 16'd0), + .pause_respect_en(pause_respect_en), + .ucast_addr(ucast_addr), .mcast_addr(mcast_addr), + .pass_ucast(pass_ucast), .pass_mcast(pass_mcast), .pass_bcast(pass_bcast), + .pass_pause(pass_pause), .pass_all(pass_all), + .rx_clk(rx_clk), .rx_data(rx_data), + .rx_valid(rx_valid), .rx_error(rx_error), .rx_ack(rx_ack), + .tx_clk(tx_clk), .tx_data(tx_data), + .tx_valid(tx_valid), .tx_error(tx_error), .tx_ack(tx_ack), + .debug(debug_state) + ); + + simple_gemac_wb simple_gemac_wb + (.wb_clk(wb_clk), .wb_rst(wb_rst), + .wb_cyc(wb_cyc), .wb_stb(wb_stb), .wb_ack(wb_ack), .wb_we(wb_we), + .wb_adr(wb_adr), .wb_dat_i(wb_dat_i), .wb_dat_o(wb_dat_o), + .mdio(mdio), .mdc(mdc), + .ucast_addr(ucast_addr), .mcast_addr(mcast_addr), + .pass_ucast(pass_ucast), .pass_mcast(pass_mcast), .pass_bcast(pass_bcast), + .pass_pause(pass_pause), .pass_all(pass_all), + .pause_respect_en(pause_respect_en), .pause_request_en(pause_request_en), + .pause_time(pause_time), .pause_thresh(pause_thresh) ); + + // RX FIFO Chain + wire rx_ll_sof, rx_ll_eof, rx_ll_src_rdy, rx_ll_dst_rdy; + wire [7:0] rx_ll_data; + + wire [18:0] rx_f19_data_int1, rx_f19_data_int2; + wire rx_f19_src_rdy_int1, rx_f19_dst_rdy_int1, rx_f19_src_rdy_int2, rx_f19_dst_rdy_int2; + wire [35:0] rx_f36_data_int; + wire rx_f36_src_rdy_int, rx_f36_dst_rdy_int; + + rxmac_to_ll8 rx_adapt + (.clk(rx_clk), .reset(rx_reset), .clear(0), + .rx_data(rx_data), .rx_valid(rx_valid), .rx_error(rx_error), .rx_ack(rx_ack), + .ll_data(rx_ll_data), .ll_sof(rx_ll_sof), .ll_eof(rx_ll_eof), .ll_error(), // error also encoded in sof/eof + .ll_src_rdy(rx_ll_src_rdy), .ll_dst_rdy(rx_ll_dst_rdy)); + + ll8_to_fifo19 ll8_to_fifo19 + (.clk(rx_clk), .reset(rx_reset), .clear(0), + .ll_data(rx_ll_data), .ll_sof(rx_ll_sof), .ll_eof(rx_ll_eof), + .ll_src_rdy(rx_ll_src_rdy), .ll_dst_rdy(rx_ll_dst_rdy), + .f19_data(rx_f19_data_int1), .f19_src_rdy_o(rx_f19_src_rdy_int1), .f19_dst_rdy_i(rx_f19_dst_rdy_int1)); + + fifo19_rxrealign fifo19_rxrealign + (.clk(rx_clk), .reset(rx_reset), .clear(0), + .datain(rx_f19_data_int1), .src_rdy_i(rx_f19_src_rdy_int1), .dst_rdy_o(rx_f19_dst_rdy_int1), + .dataout(rx_f19_data_int2), .src_rdy_o(rx_f19_src_rdy_int2), .dst_rdy_i(rx_f19_dst_rdy_int2) ); + + fifo19_to_fifo36 rx_fifo19_to_fifo36 + (.clk(rx_clk), .reset(rx_reset), .clear(0), + .f19_datain(rx_f19_data_int2), .f19_src_rdy_i(rx_f19_src_rdy_int2), .f19_dst_rdy_o(rx_f19_dst_rdy_int2), + .f36_dataout(rx_f36_data_int), .f36_src_rdy_o(rx_f36_src_rdy_int), .f36_dst_rdy_i(rx_f36_dst_rdy_int) ); + + fifo_2clock_cascade #(.WIDTH(36), .SIZE(RXFIFOSIZE)) rx_2clk_fifo + (.wclk(rx_clk), .datain(rx_f36_data_int), + .src_rdy_i(rx_f36_src_rdy_int), .dst_rdy_o(rx_f36_dst_rdy_int), .space(rx_fifo_space), + .rclk(sys_clk), .dataout(rx_f36_data), + .src_rdy_o(rx_f36_src_rdy), .dst_rdy_i(rx_f36_dst_rdy), .occupied(), .arst(reset)); + + // TX FIFO Chain + wire tx_ll_sof, tx_ll_eof, tx_ll_src_rdy, tx_ll_dst_rdy; + wire [7:0] tx_ll_data; + wire [35:0] tx_f36_data_int1, tx_f36_data_int2; + wire tx_f36_src_rdy_int1, tx_f36_dst_rdy_int1, tx_f36_src_rdy_int2, tx_f36_dst_rdy_int2; + + fifo_2clock_cascade #(.WIDTH(36), .SIZE(TXFIFOSIZE)) tx_2clk_fifo + (.wclk(sys_clk), .datain(tx_f36_data), .src_rdy_i(tx_f36_src_rdy), .dst_rdy_o(tx_f36_dst_rdy), .space(), + .rclk(tx_clk), .dataout(tx_f36_data_int1), .src_rdy_o(tx_f36_src_rdy_int1), .dst_rdy_i(tx_f36_dst_rdy_int1), .occupied(), + .arst(reset)); + + ethtx_realign ethtx_realign + (.clk(tx_clk), .reset(tx_reset), .clear(clear), + .datain(tx_f36_data_int1), .src_rdy_i(tx_f36_src_rdy_int1), .dst_rdy_o(tx_f36_dst_rdy_int1), + .dataout(tx_f36_data_int2), .src_rdy_o(tx_f36_src_rdy_int2), .dst_rdy_i(tx_f36_dst_rdy_int2) ); + + fifo36_to_ll8 fifo36_to_ll8 + (.clk(tx_clk), .reset(tx_reset), .clear(clear), + .f36_data(tx_f36_data_int2), .f36_src_rdy_i(tx_f36_src_rdy_int2), .f36_dst_rdy_o(tx_f36_dst_rdy_int2), + .ll_data(tx_ll_data), .ll_sof(tx_ll_sof), .ll_eof(tx_ll_eof), + .ll_src_rdy(tx_ll_src_rdy), .ll_dst_rdy(tx_ll_dst_rdy)); + + ll8_to_txmac ll8_to_txmac + (.clk(tx_clk), .reset(tx_reset), .clear(clear), + .ll_data(tx_ll_data), .ll_sof(tx_ll_sof), .ll_eof(tx_ll_eof), + .ll_src_rdy(tx_ll_src_rdy), .ll_dst_rdy(tx_ll_dst_rdy), + .tx_data(tx_data), .tx_valid(tx_valid), .tx_error(tx_error), .tx_ack(tx_ack)); + + // Flow Control + generate + if(RX_FLOW_CTRL==1) + flow_ctrl_rx flow_ctrl_rx + (.pause_request_en(pause_request_en), .pause_time(pause_time), .pause_thresh(pause_thresh), + .rx_clk(rx_clk), .rx_reset(rx_reset), .rx_fifo_space(rx_fifo_space), + .tx_clk(tx_clk), .tx_reset(tx_reset), .pause_req(pause_req), .pause_time_req(pause_time_req)); + endgenerate + + wire [31:0] debug_tx, debug_rx; + + assign debug_tx = { { tx_ll_data }, + { tx_ll_sof, tx_ll_eof, tx_ll_src_rdy, tx_ll_dst_rdy, 4'b0 }, + { tx_valid, tx_error, tx_ack, tx_f36_src_rdy_int1, tx_f36_dst_rdy_int1, tx_f36_data_int1[34:32]}, + { tx_data} }; + assign debug_rx = { { rx_ll_data }, + { rx_ll_sof, rx_ll_eof, rx_ll_src_rdy, rx_ll_dst_rdy, 4'b0 }, + { rx_valid, rx_error, rx_ack, rx_f36_src_rdy_int, rx_f36_dst_rdy_int, rx_f36_data_int[34:32]}, + { rx_data} }; + + assign debug = debug_rx; + +endmodule // simple_gemac_wrapper + |