Subversion Repositories versatile_mem_ctrl

`include "tb_defines.v"

`timescale 1ns/1ns

module versatile_mem_ctrl_tb

  (

   output OK

   );

   reg         wb_clk, wb_rst;

   reg         sdram_clk, sdram_rst;

   reg         tb_rst;

   wire [31:0] wbm_dat_i [1:nr_of_wbm];

   wire [3:0]  wbm_sel_i [1:nr_of_wbm];

   wire [31:0] wbm_adr_i [1:nr_of_wbm];

   wire [2:0]  wbm_cti_i [1:nr_of_wbm];

   wire [1:0]  wbm_bte_i [1:nr_of_wbm];

   wire        wbm_cyc_i [1:nr_of_wbm];

   wire        wbm_stb_i [1:nr_of_wbm];

   wire [31:0] wbm_dat_o [1:nr_of_wbm];

   wire        wbm_ack_o [1:nr_of_wbm];

   wire        wbm_clk   [1:nr_of_wbm];

   wire        wbm_rst;

   wire [31:0] wb_sdram_dat_i;

   wire [3:0]  wb_sdram_sel_i;

   wire [31:0] wb_sdram_adr_i;

   wire [2:0]  wb_sdram_cti_i;

   wire [1:0]  wb_sdram_bte_i;

   wire        wb_sdram_cyc_i;

   wire        wb_sdram_stb_i;

   wire [31:0] wb_sdram_dat_o;

   wire        wb_sdram_ack_o;

   wire [1:0]  ba, bad;

   wire [12:0] a, ad;

   wire [15:0] dq_i;

   wire [15:0] dq_o;

   wire [15:0] dq_io;

   wire [1:0]  dqs, dqs_n, dqs_i, dqs_o, dqs_n_i, dqs_n_o, dqs_io, dqs_n_io;

   wire [1:0]  dqm, dqmd, dm_rdqs;

   wire        dq_oe, dqs_oe;

   wire        cs_n, cs_nd, ras, rasd, cas, casd, we, wed, cke, cked;

   wire        ck_fb_i, ck_fb_o;

`ifdef SDR_16          // SDR SDRAM

   wb0 wb0i

     (

      .adr(wb0_adr_i),

      .bte(wb0_bte_i),

      .cti(wb0_cti_i),

      .cyc(wb0_cyc_i),

      .dat(wb0_dat_i),

      .sel(wb0_sel_i),

      .stb(wb0_stb_i),

      .we (wb0_we_i),

      .ack(wb0_ack_o),

      .clk(wb_clk),

      .dat_i(wb0_dat_o),

      .reset(wb_rst)

      );

   wb1 wb1i

     (

      .adr(wb1_adr_i),

      .bte(wb1_bte_i),

      .cti(wb1_cti_i),

      .cyc(wb1_cyc_i),

      .dat(wb1_dat_i),

      .sel(wb1_sel_i),

      .stb(wb1_stb_i),

      .we (wb1_we_i),

      .ack(wb1_ack_o),

      .clk(wb_clk),

      .dat_i(wb1_dat_o),

      .reset(wb_rst)

      );

   wb4 wb4i

     (

      .adr(wb4_adr_i),

      .bte(wb4_bte_i),

      .cti(wb4_cti_i),

      .cyc(wb4_cyc_i),

      .dat(wb4_dat_i),

      .sel(wb4_sel_i),

      .stb(wb4_stb_i),

      .we (wb4_we_i),

      .ack(wb4_ack_o),

      .clk(wb_clk),

      .dat_i(wb4_dat_o),

      .reset(wb_rst)

      );

`endif

`ifdef DDR_16          // DDR2 SDRAM

   wb0_ddr wb0i

     (

      .adr(wb0_adr_i),

      .bte(wb0_bte_i),

      .cti(wb0_cti_i),

      .cyc(wb0_cyc_i),

      .dat(wb0_dat_i),

      .sel(wb0_sel_i),

      .stb(wb0_stb_i),

      .we (wb0_we_i),

      .ack(wb0_ack_o),

      .clk(wb_clk),

      .dat_i(wb0_dat_o),

      .reset(tb_rst)

      );

   wb1_ddr wb1i

     (

      .adr(wb1_adr_i),

      .bte(wb1_bte_i),

      .cti(wb1_cti_i),

      .cyc(wb1_cyc_i),

      .dat(wb1_dat_i),

      .sel(wb1_sel_i),

      .stb(wb1_stb_i),

      .we (wb1_we_i),

      .ack(wb1_ack_o),

      .clk(wb_clk),

      .dat_i(wb1_dat_o),

      .reset(tb_rst)

      );

   wb4_ddr wb4i

     (

      .adr(wb4_adr_i),

      .bte(wb4_bte_i),

      .cti(wb4_cti_i),

      .cyc(wb4_cyc_i),

      .dat(wb4_dat_i),

      .sel(wb4_sel_i),

      .stb(wb4_stb_i),

      .we (wb4_we_i),

      .ack(wb4_ack_o),

      .clk(wb_clk),

      .dat_i(wb4_dat_o),

      .reset(tb_rst)

      );

`endif

   versatile_mem_ctrl_top # (

    .nr_of_wb_clk_domains(2),

    .nr_of_wb_ports_clk0(1),

    .nr_of_wb_ports_clk1(1),

    .nr_of_wb_ports_clk2(0),

    .nr_of_wb_ports_clk3(0))

   dut (

    .wb_adr_i_0({{wb0_adr_i[31:2],wb0_we_i,wb0_bte_i,wb0_cti_i},{wb1_adr_i[31:2],wb1_we_i,wb1_bte_i,wb1_cti_i}}),

    .wb_dat_i_0({{wb0_dat_i,wb0_sel_i},{wb1_dat_i,wb1_sel_i}}),

    .wb_dat_o_0({wb0_dat_o,wb1_dat_o}),

    .wb_stb_i_0({wb0_stb_i,wb1_stb_i}),

    .wb_cyc_i_0({wb0_cyc_i,wb1_cyc_i}),

    .wb_ack_o_0({wb0_ack_o,wb1_ack_o}),

    .wb_adr_i_1({wb4_adr_i[31:2],wb4_we_i,wb4_bte_i,wb4_cti_i}),

    .wb_dat_i_1({wb4_dat_i,wb4_sel_i}),

    .wb_dat_o_1(wb4_dat_o),

    .wb_stb_i_1(wb4_stb_i),

    .wb_cyc_i_1(wb4_cyc_i),

    .wb_ack_o_1(wb4_ack_o),

    .wb_adr_i_2(2'b0),

    .wb_dat_i_2(2'b0),

    .wb_dat_o_2(),

    .wb_stb_i_2(2'b0),

    .wb_cyc_i_2(2'b0),

    .wb_ack_o_2(),

    .wb_adr_i_3(2'b0),

    .wb_dat_i_3(2'b0),

    .wb_dat_o_3(),

    .wb_stb_i_3(2'b0),

    .wb_cyc_i_3(2'b0),

    .wb_ack_o_3(),

   // SDR SDRAM 16

`ifdef SDR_16

   .ba_pad_o(ba),

   .a_pad_o(a),

   .cs_n_pad_o(cs_n),

   .ras_pad_o(ras),

   .cas_pad_o(cas),

   .we_pad_o(we),

   .dq_o(dq_o),

   .dqm_pad_o(dqm),

   .dq_i(dq_i),

   .dq_oe(dq_oe),

   .cke_pad_o(cke),

`endif

`ifdef DDR_16

   // DDR2 SDRAM 16

   .ck_pad_o(ck),

   .ck_n_pad_o(ck_n),

   .cke_pad_o(cke),

   .ck_fb_pad_o(ck_fb_o),

   .ck_fb_pad_i(ck_fb_i),

   .cs_n_pad_o(cs_n),

   .ras_pad_o(ras),

   .cas_pad_o(cas),

   .we_pad_o(we),

   .dm_rdqs_pad_io(dm_rdqs),

   .ba_pad_o(ba),

   .addr_pad_o(a),

   .dq_pad_io(dq_io),

   .dqs_pad_io(dqs_io),

   .dqs_oe(dqs_oe),

   .dqs_n_pad_io(dqs_n_io),

   .rdqs_n_pad_i(),

   .odt_pad_o(),

`endif

   // misc     

   .wb_clk({wb_clk,wb_clk}),

   .wb_rst({wb_rst,wb_rst}),

   .sdram_clk(sdram_clk),

   .sdram_rst(wb_rst)

   );

`ifdef SDR_16

   assign #1 dq_io = dq_oe ? dq_o : {16{1'bz}};

   assign #1 dq_i  = dq_io;

   assign #1 dqmd = dqm;

   assign #1 dqs_io = dqs_oe ? dqs_o : {2{1'bz}};

   assign #1 dqs_i  = dqs_io;

   assign #1 dqs_n_io = dqs_oe ? dqs_n_o : {2{1'bz}};

   assign #1 dqs_n_i  = dqs_n_io;

`endif

`ifdef DDR_16

   assign #1 dqmd = dqm;

   assign    ck_fb_i = ck_fb_o;

`endif

   assign #1 ad = a;

   assign #1 bad = ba;

   assign #1 cked = cke;

   assign #1 cs_nd = cs_n;

   assign #1 rasd = ras;

   assign #1 casd = cas;

   assign #1 wed = we;

`ifdef SDR_16          // SDR SDRAM Simulation model

mt48lc16m16a2 sdram

  (

   .Dq(dq_io),

   .Addr(ad),

   .Ba(bad),

   .Clk(sdram_clk),

   .Cke(cked),

   .Cs_n(cs_nd),

   .Ras_n(rasd),

   .Cas_n(casd),

   .We_n(wed),

   .Dqm(dqmd)

   );

`endif

`ifdef DDR_16          // DDR2 SDRAM Simulation model

ddr2 ddr2_sdram

  (

   .ck(ck),

   .ck_n(ck_n),

   .cke(cke),

   .cs_n(cs_n),

   .ras_n(ras),

   .cas_n(cas),

   .we_n(we),

   .dm_rdqs(dm_rdqs),

   .ba(ba),

   .addr(a),

   .dq(dq_io),

   .dqs(dqs_io),

   .dqs_n(dqs_n_io),

   .rdqs_n(),

   .odt()

   );

`endif

   // Wishbone reset

   initial

     begin

        #0      wb_rst = 1'b1;

        #200    wb_rst = 1'b1;

        #200000 wb_rst = 1'b0;

     end

   // SDRAM reset

   initial

     begin

        #0      sdram_rst = 1'b1;

        #200    sdram_rst = 1'b1;

        #200000 sdram_rst = 1'b0;

     end

   // Test bench reset

   initial

     begin

        #0      tb_rst = 1'b1;

        #200    tb_rst = 1'b1;

        //#200000 tb_rst = 1'b0;

        #300000 tb_rst = 1'b0;   // hold reset to let initialization complete

     end

   // Wishbone clock

   initial

     begin

        #0 wb_clk = 1'b0;

        forever

          #(wb0_clk_period/2) wb_clk = !wb_clk;

     end

   // SDRAM clock

   initial

     begin

        #0 sdram_clk = 1'b0;

        forever

          #(sdram_clk_period/2) sdram_clk = !sdram_clk;

     end

endmodule // versatile_mem_ctrl_tb