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Diffstat (limited to 'fpga/usrp2/testbench/single_u2_sim.v')
| -rw-r--r-- | fpga/usrp2/testbench/single_u2_sim.v | 341 |
1 files changed, 341 insertions, 0 deletions
diff --git a/fpga/usrp2/testbench/single_u2_sim.v b/fpga/usrp2/testbench/single_u2_sim.v new file mode 100644 index 000000000..f25374613 --- /dev/null +++ b/fpga/usrp2/testbench/single_u2_sim.v @@ -0,0 +1,341 @@ +// +// 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/>. +// + +`timescale 1ns / 1ps +////////////////////////////////////////////////////////////////////////////////// + +module single_u2_sim(); + // Misc, debug + wire [7:0] leds; + wire [31:0] debug; + wire [1:0] debug_clk; + + // Expansion + wire exp_pps_in; + wire exp_pps_out; + + // GMII + // GMII-CTRL + wire GMII_COL; + wire GMII_CRS; + + // GMII-TX + wire [7:0] GMII_TXD; + wire GMII_TX_EN; + wire GMII_TX_ER; + wire GMII_GTX_CLK; + wire GMII_TX_CLK; // 100mbps clk + + // GMII-RX + wire [7:0] GMII_RXD; + wire GMII_RX_CLK; + wire GMII_RX_DV; + wire GMII_RX_ER; + + // GMII-Management + wire MDIO; + wire MDC; + wire PHY_INTn; // open drain + wire PHY_RESETn; + wire PHY_CLK; // possibly use on-board osc + + // RAM + wire [17:0] RAM_D; + wire [18:0] RAM_A; + wire RAM_CE1n; + wire RAM_CENn; + wire RAM_CLK; + wire RAM_WEn; + wire RAM_OEn; + wire RAM_LDn; + + // SERDES + wire ser_enable; + wire ser_prbsen; + wire ser_loopen; + wire ser_rx_en; + + wire ser_tx_clk; + wire [15:0] ser_t; + wire ser_tklsb; + wire ser_tkmsb; + + wire ser_rx_clk; + wire [15:0] ser_r; + wire ser_rklsb; + wire ser_rkmsb; + + // CPLD interface + wire cpld_din, cpld_clk, cpld_detached, cpld_start, cpld_mode, cpld_done; + + // ADC + wire [13:0] adc_a; + wire adc_ovf_a; + wire adc_on_a, adc_oe_a; + + wire [13:0] adc_b; + wire adc_ovf_b; + wire adc_on_b, adc_oe_b; + + // DAC + wire [15:0] dac_a; + wire [15:0] dac_b; + + // I2C + wire SCL; + wire SDA; + + // Clock Gen Control + wire [1:0] clk_en; + wire [1:0] clk_sel; + wire clk_func; // FIXME is an input to control the 9510 + wire clk_status; + + // Clocks + reg clk_fpga; + reg clk_to_mac; + wire pps_in; + + // Generic SPI + wire sclk, mosi, miso; + wire sen_clk; + wire sen_dac; + wire sen_tx_db; + wire sen_tx_adc; + wire sen_tx_dac; + wire sen_rx_db; + wire sen_rx_adc; + wire sen_rx_dac; + + // GPIO to DBoards + wire [15:0] io_tx; + wire [15:0] io_rx; + + wire wb_clk; + wire start, clock_ready; + + reg aux_clk; + + initial aux_clk= 1'b0; + always #6 aux_clk = ~aux_clk; + + initial clk_fpga = 1'bx; + initial #3007 clk_fpga = 1'b0; + always #5 clk_fpga = ~clk_fpga; + + initial clk_to_mac = 0; + always #4 clk_to_mac = ~clk_to_mac; + + wire div_clk, dsp_clk; + reg [7:0] div_ctr = 0; + + assign dsp_clk = clock_ready ? clk_fpga : aux_clk; + assign wb_clk = div_clk; + +`define CLK_DIV_2 1 +//`define CLK_DIV_3 + +`ifdef CLK_DIV_2 + localparam clock_divider = 4'd2; + always @(posedge dsp_clk) + div_ctr <= div_ctr + 1; + assign div_clk = div_ctr[0]; +`endif + +`ifdef CLK_DIV_3 + localparam clock_divider = 2; + always @(posedge dsp_clk or negedge dsp_clk) + if(div_ctr == 5) + div_ctr <= 0; + else + div_ctr <= div_ctr + 1; + assign div_clk = ((div_ctr == 0) | (div_ctr == 1) | (div_ctr == 2)); +`endif + + initial + $monitor($time, ,clock_ready); + + always #1000000 $monitor("Time in ns ",$time); + + initial begin + @(negedge cpld_done); + @(posedge cpld_done); + $dumpfile("single_u2_sim.lxt"); + $dumpvars(0,single_u2_sim); + end + + initial #10000000 $finish; + + cpld_model + cpld_model (.aux_clk(aux_clk),.start(cpld_start),.mode(cpld_mode),.done(cpld_done), + .dout(cpld_din),.sclk(cpld_clk),.detached(cpld_detached)); + + serdes_model serdes_model + (.ser_tx_clk(ser_tx_clk), .ser_tkmsb(ser_tkmsb), .ser_tklsb(ser_tklsb), .ser_t(ser_t), + .ser_rx_clk(ser_rx_clk), .ser_rkmsb(ser_rkmsb), .ser_rklsb(ser_rklsb), .ser_r(ser_r), + .even(0),.error(0) ); + + adc_model adc_model + (.clk(dsp_clk),.rst(0), + .adc_a(adc_a),.adc_ovf_a(adc_ovf_a),.adc_on_a(adc_on_a),.adc_oe_a(adc_oe_a), + .adc_b(adc_b),.adc_ovf_b(adc_ovf_b),.adc_on_b(adc_on_b),.adc_oe_b(adc_oe_b) ); + + wire [2:0] speed; + phy_sim phy_model + (.Gtx_clk(GMII_GTX_CLK), . Rx_clk(GMII_RX_CLK), .Tx_clk(GMII_TX_CLK), + .Tx_er(GMII_TX_ER), .Tx_en(GMII_TX_EN), .Txd(GMII_TXD), + .Rx_er(GMII_RX_ER), .Rx_dv(GMII_RX_DV), .Rxd(GMII_RXD), + .Crs(GMII_CRS), .Col(GMII_COL), + .Speed(speed), .Done(0) ); + pullup p3(MDIO); + + miim_model miim_model + (.mdc_i(MDC),.mdio(MDIO),.phy_resetn_i(PHY_RESETn),.phy_clk_i(PHY_CLK), + .phy_intn_o(PHY_INTn),.speed_o(speed) ); + + xlnx_glbl glbl (.GSR(),.GTS()); + + wire RAM_MODE = 1'b0; + cy1356 ram_model(.d(RAM_D),.clk(RAM_CLK),.a(RAM_A), + .bws(2'b00),.we_b(RAM_WEn),.adv_lb(RAM_LDn), + .ce1b(RAM_CE1n),.ce2(1'b1),.ce3b(1'b0), + .oeb(RAM_OEn),.cenb(RAM_CENn),.mode(RAM_MODE) ); + + M24LC024B eeprom_model(.A0(0),.A1(0),.A2(0),.WP(0), + .SDA(SDA),.SCL(SCL),.RESET(0)); + + wire scl_pad_i, scl_pad_o, scl_pad_oen_o; + wire sda_pad_i, sda_pad_o, sda_pad_oen_o; + + pullup p1(SCL); + pullup p2(SDA); + + assign scl_pad_i = SCL; + assign sda_pad_i = SDA; + + assign SCL = scl_pad_oen_o ? 1'bz : scl_pad_o; + assign SDA = sda_pad_oen_o ? 1'bz : sda_pad_o; + + // printf output + wire uart_baud_o, uart_tx_o, uart_rx_i; + assign uart_rx_i = 1'b1; + + uart_rx uart_rx(.baudclk(uart_baud_o),.rxd(uart_tx_o)); + + // End the simulation + always @(posedge wb_clk) + if((u2_core.m0_we == 1'd1)&&(u2_core.m0_adr == 16'hC2F0)) + begin + $display($time, "Finish called.",); + $finish; + end + + u2_core #(.RAM_SIZE(32768)) + u2_core(.dsp_clk (dsp_clk), + .wb_clk (wb_clk), + .clock_ready (clock_ready), + .clk_to_mac (clk_to_mac), + .pps_in (pps_in), + .leds (leds), + .debug (debug[31:0]), + .debug_clk (debug_clk[1:0]), + .exp_pps_in (exp_pps_in), + .exp_pps_out (exp_pps_out), + .GMII_COL (GMII_COL), + .GMII_CRS (GMII_CRS), + .GMII_TXD (GMII_TXD[7:0]), + .GMII_TX_EN (GMII_TX_EN), + .GMII_TX_ER (GMII_TX_ER), + .GMII_GTX_CLK (GMII_GTX_CLK), + .GMII_TX_CLK (GMII_TX_CLK), + .GMII_RXD (GMII_RXD[7:0]), + .GMII_RX_CLK (GMII_RX_CLK), + .GMII_RX_DV (GMII_RX_DV), + .GMII_RX_ER (GMII_RX_ER), + .MDIO (MDIO), + .MDC (MDC), + .PHY_INTn (PHY_INTn), + .PHY_RESETn (PHY_RESETn), + .ser_enable (ser_enable), + .ser_prbsen (ser_prbsen), + .ser_loopen (ser_loopen), + .ser_rx_en (ser_rx_en), + .ser_tx_clk (ser_tx_clk), + .ser_t (ser_t[15:0]), + .ser_tklsb (ser_tklsb), + .ser_tkmsb (ser_tkmsb), + .ser_rx_clk (ser_rx_clk), + .ser_r (ser_r[15:0]), + .ser_rklsb (ser_rklsb), + .ser_rkmsb (ser_rkmsb), + .cpld_start (cpld_start), + .cpld_mode (cpld_mode), + .cpld_done (cpld_done), + .cpld_din (cpld_din), + .cpld_clk (cpld_clk), + .cpld_detached (cpld_detached), + .cpld_init_b (1), + .por (0), + .adc_a (adc_a[13:0]), + .adc_ovf_a (adc_ovf_a), + .adc_on_a (adc_on_a), + .adc_oe_a (adc_oe_a), + .adc_b (adc_b[13:0]), + .adc_ovf_b (adc_ovf_b), + .adc_on_b (adc_on_b), + .adc_oe_b (adc_oe_b), + .dac_a (dac_a[15:0]), + .dac_b (dac_b[15:0]), + .scl_pad_i (scl_pad_i), + .scl_pad_o (scl_pad_o), + .scl_pad_oen_o (scl_pad_oen_o), + .sda_pad_i (sda_pad_i), + .sda_pad_o (sda_pad_o), + .sda_pad_oen_o (sda_pad_oen_o), + .clk_en (clk_en[1:0]), + .clk_sel (clk_sel[1:0]), + .clk_func (clk_func), + .clk_status (clk_status), + .sclk (sclk), + .mosi (mosi), + .miso (miso), + .sen_clk (sen_clk), + .sen_dac (sen_dac), + .sen_tx_db (sen_tx_db), + .sen_tx_adc (sen_tx_adc), + .sen_tx_dac (sen_tx_dac), + .sen_rx_db (sen_rx_db), + .sen_rx_adc (sen_rx_adc), + .sen_rx_dac (sen_rx_dac), + .io_tx (io_tx[15:0]), + .io_rx (io_rx[15:0]), + .RAM_D (RAM_D), + .RAM_A (RAM_A), + .RAM_CE1n (RAM_CE1n), + .RAM_CENn (RAM_CENn), + .RAM_CLK (RAM_CLK), + .RAM_WEn (RAM_WEn), + .RAM_OEn (RAM_OEn), + .RAM_LDn (RAM_LDn), + .uart_tx_o (uart_tx_o), + .uart_rx_i (uart_rx_i), + .uart_baud_o (uart_baud_o), + .sim_mode (1'b1), + .clock_divider (clock_divider) + ); + +endmodule // single_u2_sim |