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] wb0_dat_i;
   wire [3:0]  wb0_sel_i;
   wire [31:0] wb0_adr_i;
   wire [2:0]  wb0_cti_i;
   wire [1:0]  wb0_bte_i;
   wire        wb0_cyc_i;
   wire        wb0_stb_i;
   wire [31:0] wb0_dat_o;
   wire        wb0_ack_o;
 
   wire [31:0] wb1_dat_i;
   wire [3:0]  wb1_sel_i;
   wire [31:0] wb1_adr_i;
   wire [2:0]  wb1_cti_i;
   wire [1:0]  wb1_bte_i;
   wire        wb1_cyc_i;
   wire        wb1_stb_i;
   wire [31:0] wb1_dat_o;
   wire        wb1_ack_o;
 
   wire [31:0] wb4_dat_i;
   wire [3:0]  wb4_sel_i;
   wire [31:0] wb4_adr_i;
   wire [2:0]  wb4_cti_i;
   wire [1:0]  wb4_bte_i;
   wire        wb4_cyc_i;
   wire        wb4_stb_i;
   wire [31:0] wb4_dat_o;
   wire        wb4_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
	  //#200 wb_clk = !wb_clk;   // 2.5 MHz
	  #20 wb_clk = !wb_clk;   // 25 MHz
     end
 
   // SDRAM clock
   initial
     begin
	#0 sdram_clk = 1'b0;
	forever
	  #4 sdram_clk = !sdram_clk;   // 125 MHz
	  //#5 sdram_clk = !sdram_clk;   // 100 MHz
     end
 
endmodule // versatile_mem_ctrl_tb