UVM connect 出错？

fgg1991

Fatal error in Function uvm_pkg/uvm_port_base::connect at C:/questasim64_10.2c/verilog_src/uvm-1.1d/src/base/uvm_port_base.svh line 431
没查到这个错误出在哪，代码参考了张强的代码




程序：
class SPI_env extends uvm_env;



`uvm_component_utils(SPI_env);



SPI_agent
i_agt, o_agt;

SPI_model
mdl;

SPI_scoreboard scb;



uvm_tlm_analysis_fifo #(SPI_transaction) agt_scb_fifo;

uvm_tlm_analysis_fifo #(SPI_transaction) agt_mdl_fifo;

uvm_tlm_analysis_fifo #(SPI_transaction) mdl_scb_fifo;



function new(string name = "SPI_env", uvm_component parent);

super.new(name, parent);

endfunction



function void build_phase(uvm_phase phase);

super.build_phase(phase);

i_agt = SPI_agent::type_id::create("i_agt", this);

o_agt = SPI_agent::type_id::create("o_agt", this);

i_agt.is_active = UVM_ACTIVE;

o_agt.is_active = UVM_PASSIVE;



mdl = SPI_model::type_id::create("mdl",this);

scb = SPI_scoreboard::type_id::create("scb", this);

agt_mdl_fifo = new("agt_mdl_fifo", this);

agt_scb_fifo = new("agt_scb_fifo", this);

mdl_scb_fifo = new("mdl_scb_fifo", this);

endfunction



function void connect_phase(uvm_phase phase);

super.connect_phase(phase);

i_agt.ap.connect(agt_mdl_fifo.analysis_export);               //报错在这行

mdl.port.connect(agt_mdl_fifo.blocking_get_export);

mdl.ap.connect(mdl_scb_fifo.analysis_export);

scb.exp_port.connect(mdl_scb_fifo.blocking_get_export);

scb.act_port.connect(agt_scb_fifo.blocking_get_export);

o_agt.ap.connect(agt_scb_fifo.analysis_export);

endfunction
endclass

DS_LOGIC

回复 1# fgg1991


   你 i_agt o_agt 里的ap 应该跟monitor连的吧 两个montior 采集的trans类型一样么？

fgg1991

回复 2# DS_LOGIC


   一句话点醒梦中人!我突然意识到bug可能出在哪了！谢谢！

fgg1991

回复 2# DS_LOGIC


   修复成功！谢谢回复！果然自己看自己的代码会有盲区。在i_agt里我省略了mon，应该直接在drv里把trans驱动到ap上，但是在drv里忘记初始化一个ap导致i_agt的ap是悬空的了。
agent的connect改成

1.         function void connect_phase(uvm_phase phase);
   
2.                 super.connect_phase(phase);
   
3.                 if(is_active == UVM_ACTIVE)begin
   
4.                         drv.seq_item_port.connect(sqr.seq_item_export);
   
5.                         ap = drv.ap;
   
6.                 end else
   
7.                         ap = mon.ap;
   
8.         endfunction
   

复制代码

就对了

八个向日葵

我也遇到这个错，不过是build_phase拼错了