有关uvm验证的问题

清风403

1. `timescale 1ns/1ps
   
2. `include "uvm_pkg.sv"  
   
3. 
   
4. 
   
5. module top_tb;
   
6. import uvm_pkg::*;
   
7. `include "uvm_macros.svh"
   
8. 
   
9. reg clk;
   
10. reg rst_n;
    
11. reg[7:0] rxd;
    
12. reg rx_dv;
    
13. wire[7:0] txd;
    
14. wire tx_en;
    
15. 
    
16. class my_driver extends uvm_driver;
    
17. 
    
18.   function new(string name = "my_driver", uvm_component parent = null);
    
19.     super.new(name, parent);
    
20.   endfunction
    
21.   extern virtual task main_phase(uvm_phase phase);
    
22.    
    
23. endclass
    
24. 
    
25. task my_driver::main_phase(uvm_phase phase);
    
26.    top_tb.rxd <= 8'b0;
    
27.    top_tb.rx_dv <= 1'b0;
    
28.    while(top_tb.rst_n)
    
29.       @(posedge top_tb.clk);
    
30.    for(int i = 0; i < 256; i++)begin
    
31.       @(posedge top_tb.clk);
    
32.       top_tb.rxd <= $urandom_range(0, 255);
    
33.       top_tb.rx_dv <= 1'b1;
    
34.       `uvm_info("my_driver", "data is drived", UVM_LOW)
    
35.    end
    
36.    @(posedge top_tb.clk);
    
37.    top_tb.rx_dv <= 1'b0;
    
38. endtask
    
39. 
    
40. dut my_dut(.clk(clk),
    
41.            .rst_n(rst_n),
    
42.            .rxd(rxd),
    
43.            .rx_dv(rx_dv),
    
44.            .txd(txd),
    
45.            .tx_en(tx_en));
    
46. 
    
47. initial begin
    
48.    my_driver drv;
    
49.    drv = new("drv", null);
    
50.    drv.main_phase(null);
    
51.    // $finish();
    
52.          // rxd = 200;
    
53.          // rx_dv = 0;
    
54.          // @(posedge rst_n);
    
55.          // rxd = 255;
    
56.          // rx_dv = 1;
    
57. end
    
58. 
    
59. initial begin
    
60.    clk = 0;
    
61.    forever begin
    
62.       #100 clk = ~clk;
    
63.    end
    
64. end
    
65. 
    
66. initial begin
    
67.    rst_n = 1'b0;
    
68.    #1000;
    
69.    rst_n = 1'b1;
    
70. end
    
71. 
    
72. endmodule
    
73. 
    

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我将上面这个类定义在内部的时候可以正常仿真为什么我单独定义的时候就不能使用了呢？

1. `ifndef MY_DRIVER__SV
   
2. `define MY_DRIVER__SV
   
3. class my_driver extends uvm_driver;
   
4. 
   
5.    function new(string name = "my_driver", uvm_component parent = null);
   
6.       super.new(name, parent);
   
7.    endfunction
   
8.    extern virtual task main_phase(uvm_phase phase);
   
9. endclass
   
10. 
    
11. task my_driver::main_phase(uvm_phase phase);
    
12.    top_tb.rxd <= 8'b0;
    
13.    top_tb.rx_dv <= 1'b0;
    
14.    while(!top_tb.rst_n)
    
15.       @(posedge top_tb.clk);
    
16.    for(int i = 0; i < 256; i++)begin
    
17.       @(posedge top_tb.clk);
    
18.       top_tb.rxd <= $urandom_range(0, 255);
    
19.       top_tb.rx_dv <= 1'b1;
    
20.       `uvm_info("my_driver", "data is drived", UVM_LOW)
    
21.    end
    
22.    @(posedge top_tb.clk);
    
23.    top_tb.rx_dv <= 1'b0;
    
24. endtask
    
25. `endif
    
26. 
    

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我使用的是linux环境，questasim10.3a。do文件如下：

1. set  UVM_DPI_HOME   /opt/mentor_graphics/questa/10.3a/questasim/uvm-1.1d/linux_x86_64
   
2. vlib work  
   
3. vmap work
   
4. vlog  +incdir+/opt/mentor_graphics/questa/10.3a/questasim/verilog_src/uvm-1.1d/src -L mtiAvm -L mtiOvm -L mtiUvm -L mtiUPF  top_tb.sv
   
5. vlog  +incdir+/opt/mentor_graphics/questa/10.3a/questasim/verilog_src/uvm-1.1d/src -L mtiAvm -L mtiOvm -L mtiUvm -L mtiUPF  dut.sv
   
6. vlog  +incdir+/opt/mentor_graphics/questa/10.3a/questasim/verilog_src/uvm-1.1d/src -L mtiAvm -L mtiOvm -L mtiUvm -L mtiUPF  my_driver.sv
   
7. vsim  -ldflags "-lregex" -t 1ns -c -sv_lib $UVM_DPI_HOME/uvm_dpi -voptargs=+acc -L lpm_ver -L altera_mf_ver -L altera_ver -L stratixv_ver work.top_tb
   
8. 
   
9. set StdArithNoWarnings 1
   
10. set NumericStdNoWarnings 1
    
11. 
    

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gaurson

试试先编译my_driver.sv，再编译top_tb.sv看看？

清风403

回复 2# gaurson
效果差不多，error信号如下

1. # ** Error: my_driver.sv(3): near "uvm_driver": syntax error, unexpected IDENTIFIER
   
2. # ** Error: my_driver.sv(3): Error in class extension specification.
   

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songnp

`include "uvm_pkg.sv"
`include "uvm_macros.svh"
加到my_driver.sv里边试试

清风403

回复 4# songnp


谢谢，这下可以了