• 电力电子转战数字IC20220816day61——uvm入门实验3

    目录

    实验目标

    实验任务

    1.1将monitor中用来与checker中的mailbox通信的mon_mb句柄换成对应的uvm_blocking_put_port类型

    1.2在checker中声明和monitor通信的imp端口，与refmod通信的imp端口

    1.3对上面声明的imp实现对应的方法

    1.4在mcdf_refmod中声明与checker连接的imp端口，例化

    1.5在mcdf_env的connect_phase()完成monitor的port连接到mcdf_checker imp

    1.6在mcdf_checker中完成mcdf_refmod的port连接到mcdf_checker的imp

    2.1将mcdf_refmod中的out_mb替换成uvm_tlm_fifo

    2.2同样的，mcdf_checker中的exp_mb[3]替换成uvm_blocking_get_port类型句柄数组。将mcdf_checker中的port连接到mcdf_refmod中uvm_tlm_fifo自带的blocking_get_export

    3.1利用回调函数完成类的复用，先预定义几个虚方法

    3.2关联回调类型和对应的test

    3.3回调指定，也就是连接

    3.4定义继承于base test的两个test的两个回调函数cb_*********，这两个回调函数都继承于base test的回调函数

    4在mcdf_base_test中添加新的end_of_elaboration_phase函数；利用uvm_root类设置信息冗余度为UVM_high；利用uvm_root::set_report_max_quit_count()函数设置仿真退出的最大数值；利用uvm_root::set_timeout()设置仿真的最大时间长度

    实验目标

    实验任务

    1.1将monitor中用来与checker中的mailbox通信的mon_mb句柄换成对应的uvm_blocking_put_port类型

    首先在monitor中（这里以chnl_monitor为例），声明端口

        uvm_blocking_put_port #(mon_data_t) mon_bp_port;

    然后在new函数中例化这个PORT

    1.     function new(string name="chnl_monitor", uvm_component parent);
    2.       super.new(name, parent);
    3.       //TODO-1.1 instantiate the TLM port
    4.       mon_bp_port = new("mon_bp_port", this);
    5.     endfunction

    将原来存放句柄的方式由mailbox改为端口

    1.         mon_mb.put(m);
    2.  
    3.         mon_bp_port.put(m);

    1.2在checker中声明和monitor通信的imp端口，与refmod通信的imp端口

    checker对多个agent中的monitor，是一对多的多方向通信类型，需要使用宏声明

    1. //在mcdf_checker前进行宏声明
    2.   `uvm_blocking_put_imp_decl(_chnl0)
    3.   `uvm_blocking_put_imp_decl(_chnl1)
    4.   `uvm_blocking_put_imp_decl(_chnl2)
    5.   `uvm_blocking_put_imp_decl(_fmt)
    6.   `uvm_blocking_put_imp_decl(_reg)
    7.  
    8.   `uvm_blocking_get_peek_imp_decl(_chnl0)
    9.   `uvm_blocking_get_peek_imp_decl(_chnl1)
    10.   `uvm_blocking_get_peek_imp_decl(_chnl2)
    11.  
    12.   `uvm_blocking_get_imp_decl(_reg)
    13.  
    14. //在mcdf_checker中进行端口声明
    15.     uvm_blocking_put_imp_chnl0 #(mon_data_t, mcdf_checker)   chnl0_bp_imp;
    16.     uvm_blocking_put_imp_chnl1 #(mon_data_t, mcdf_checker)   chnl1_bp_imp;
    17.     uvm_blocking_put_imp_chnl2 #(mon_data_t, mcdf_checker)   chnl2_bp_imp;
    18.     uvm_blocking_put_imp_fmt   #(fmt_trans , mcdf_checker)   fmt_bp_imp  ;
    19.     uvm_blocking_put_imp_reg   #(reg_trans , mcdf_checker)   reg_bp_imp  ;
    20.     //
    21.     uvm_blocking_get_peek_imp_chnl0 #(mon_data_t, mcdf_checker)  chnl0_bgpk_imp;
    22.     uvm_blocking_get_peek_imp_chnl1 #(mon_data_t, mcdf_checker)  chnl1_bgpk_imp;
    23.     uvm_blocking_get_peek_imp_chnl2 #(mon_data_t, mcdf_checker)  chnl2_bgpk_imp;
    24.  
    25.     uvm_blocking_get_imp_reg    #(reg_trans , mcdf_checker)  reg_bg_imp  ;
    26.  
    27. //在new函数中例化
    28.       chnl0_bp_imp = new("chnl0_bp_imp", this);
    29.       chnl1_bp_imp = new("chnl1_bp_imp", this);
    30.       chnl2_bp_imp = new("chnl2_bp_imp", this);
    31.       fmt_bp_imp   = new("fmt_bp_imp", this);  
    32.       reg_bp_imp   = new("reg_bp_imp", this);  
    33.  
    34.       chnl0_bgpk_imp = new("chnl0_bgpk_imp", this);
    35.       chnl1_bgpk_imp = new("chnl1_bgpk_imp", this);
    36.       chnl2_bgpk_imp = new("chnl2_bgpk_imp", this);
    37.  
    38.       reg_bg_imp    = new("reg_bg_imp", this);

    1.3对上面声明的imp实现对应的方法

    1.     task put_chnl0(mon_data_t t);
    2.       chnl_mbs[0].put(t);
    3.     endtask
    4.     task put_chnl1(mon_data_t t);
    5.       chnl_mbs[1].put(t);
    6.     endtask
    7.     task put_chnl2(mon_data_t t);
    8.       chnl_mbs[2].put(t);
    9.     endtask
    10.     task put_fmt(fmt_trans t);
    11.       fmt_mb.put(t);
    12.     endtask
    13.     task put_reg(reg_trans t);
    14.       reg_mb.put(t);
    15.     endtask
    17.     task peek_chnl0(output mon_data_t t);
    18.       chnl_mbs[0].peek(t);
    19.     endtask
    20.     task peek_chnl1(output mon_data_t t);
    21.       chnl_mbs[1].peek(t);
    22.     endtask
    23.     task peek_chnl2(output mon_data_t t);
    24.       chnl_mbs[2].peek(t);
    25.     endtask
    26.     task get_chnl0(output mon_data_t t);
    27.       chnl_mbs[0].get(t);
    28.     endtask
    29.     task get_chnl1(output mon_data_t t);
    30.       chnl_mbs[1].get(t);
    31.     endtask
    32.     task get_chnl2(output mon_data_t t);
    33.       chnl_mbs[2].get(t);
    34.     endtask
    35.     task get_reg(output reg_trans t);
    36.       reg_mb.get(t);
    37.     endtask

    1.4在mcdf_refmod中声明与checker连接的imp端口，例化

    1. //在mcdf_refmod类中声明
    2.     uvm_blocking_get_port #(reg_trans) reg_bg_port;
    3.     uvm_blocking_get_peek_port #(mon_data_t) in_bgpk_ports[3];
    4.  
    5. //在new函数中例化
    6.       reg_bg_port = new("reg_bg_port", this);
    7.       foreach(in_bgpk_ports[i]) in_bgpk_ports[i] = new($sformatf("in_bgpk_ports[%0d]", i), this);
    8.  
    9. //将mailbox换成PORT
    10.         this.reg_mb.get(t);
    11.  
    12.         this.reg_bg_port.get(t);
    1.         this.in_mbs[id].peek(it);
    2.  
    3.           this.in_bgpk_ports[id].get(it);
    4.  
    5.           this.in_mbs[id].get(it);
    6.  
    7.           this.in_bgpk_ports[id].get(it);

    1.5在mcdf_env的connect_phase()完成monitor的port连接到mcdf_checker imp

    1.     function void connect_phase(uvm_phase phase);
    2.       super.connect_phase(phase);
    3.       //TODO-1.5 connect TLM ports between monitors and the checker
    4.       chnl_agts[0].monitor.mon_bp_port.connect(chker.chnl0_bp_imp);
    5.       chnl_agts[1].monitor.mon_bp_port.connect(chker.chnl1_bp_imp);
    6.       chnl_agts[2].monitor.mon_bp_port.connect(chker.chnl2_bp_imp);
    7.       reg_agt.monitor.mon_bp_port.connect(chker.reg_bp_imp);
    8.       fmt_agt.monitor.mon_bp_port.connect(chker.fmt_bp_imp);
    9.     endfunction

    1.6在mcdf_checker中完成mcdf_refmod的port连接到mcdf_checker的imp

    1.     function void connect_phase(uvm_phase phase);
    2.       super.connect_phase(phase);
    3.       //TODO-1.6 connect checker TLM ports with the ones of reference model
    4.       refmod.in_bgpk_ports[0].connect(chnl0_bgpk_imp);
    5.       refmod.in_bgpk_ports[1].connect(chnl1_bgpk_imp);
    6.       refmod.in_bgpk_ports[2].connect(chnl2_bgpk_imp);
    7.  
    8.       refmod.reg_bg_port.connect(reg_bg_imp);

    2.1将mcdf_refmod中的out_mb替换成uvm_tlm_fifo

    1. //先声明
    2.     uvm_tlm_fifo #(fmt_trans) out_tlm_fifos[3];
    3. //new函数中例化
    4.       foreach(out_tlm_fifos[i]) out_tlm_fifos[i] = new($sformatf("out_tlm_fifos[%0d]", i), this);
    5. //替代原来的mailbox
    6.         this.out_mbs[id].put(ot);
    7.  
    8.         this.out_tlm_fifos[id].put(ot);

    2.2同样的，mcdf_checker中的exp_mb[3]替换成uvm_blocking_get_port类型句柄数组。将mcdf_checker中的port连接到mcdf_refmod中uvm_tlm_fifo自带的blocking_get_export

    1.     uvm_blocking_get_port #(fmt_trans) exp_bg_ports[3];
    2.  
    3.       foreach(exp_bg_ports[i]) exp_bg_ports[i] = new($sformatf("exp_bg_ports[%0d]", i), this);
    4.  
    5. //        this.exp_mbs[mont.ch_id].get(expt);
    6.  
    7.         this.exp_bg_ports[mont.ch_id].get(expt);
    8.  
    9.       foreach(exp_bg_ports[i]) begin
    10.         exp_bg_ports[i].connect(refmod.out_tlm_fifos[i].blocking_get_export);
    11.       end

    使用uvm_tlm_fifo就可以既使用tlm端口又不用自己实现具体的方法

    3.1利用回调函数完成类的复用，先预定义几个虚方法

    1.   typedef class mcdf_base_test;
    2.  
    3.   class cb_mcdf_base extends uvm_callback;
    4.     `uvm_object_utils(cb_mcdf_base)
    5.     mcdf_base_test test;
    6.     function new (string name = "cb_mcdf_base");
    7.       super.new(name);
    8.     endfunction
    9.  
    10.     virtual task cb_do_reg();
    11.       // User to define the content
    12.     endtask
    13.  
    14.     virtual task cb_do_formatter();
    15.       // User to define the content
    16.     endtask
    17.  
    18.     virtual task cb_do_data();
    19.       // User to define the content
    20.     endtask
    21.   endclass

    3.2关联回调类型和对应的test

    在对应的test注册时使用callback对应的宏

        `uvm_register_cb(mcdf_base_test, cb_mcdf_base)

    3.3回调指定，也就是连接

    在对应的test中的虚方法用回调指定宏，参数多了虚方法

    1.     virtual task do_reg();
    2.       //TODO-3.3 Use callback macro to link the callback method
    3.       `uvm_do_callbacks(mcdf_base_test, cb_mcdf_base, cb_do_reg())
    4.     endtask
    5.  
    6.     // do external formatter down stream slave configuration
    7.     virtual task do_formatter();
    8.       //TODO-3.3 Use callback macro to link the callback method
    9.       `uvm_do_callbacks(mcdf_base_test, cb_mcdf_base, cb_do_formatter())
    10.     endtask
    11.  
    12.     // do data transition from 3 channel slaves
    13.     virtual task do_data();
    14.       //TODO-3.3 Use callback macro to link the callback method
    15.       `uvm_do_callbacks(mcdf_base_test, cb_mcdf_base, cb_do_data())
    16.     endtask

    3.4定义继承于base test的两个test的两个回调函数cb_*********，这两个回调函数都继承于base test的回调函数

    把原来mcdf_data_consistence_basic_test完全复制到回调函数cb_mcdf_data_consistence_basic_test中，全部方法前面加上cb_前缀，相当于做了两次相同的mcdf_data_consistence_basic_test。也可以定义新的方法或修改原有方法，作为test的扩展

    1.   class cb_mcdf_data_consistence_basic extends cb_mcdf_base;
    2.     `uvm_object_utils(cb_mcdf_data_consistence_basic)
    3.     function new (string name = "cb_mcdf_data_consistence_basic");
    4.       super.new(name);
    5.     endfunction
    6.     task cb_do_reg();
    7.       bit[31:0] wr_val, rd_val;
    8.       super.cb_do_reg();
    9.       // slv0 with len=8,  prio=0, en=1
    10.       wr_val = (1<<3)+(0<<1)+1;
    11.       test.write_reg(`SLV0_RW_ADDR, wr_val);
    12.       test.read_reg(`SLV0_RW_ADDR, rd_val);
    13.       void'(test.diff_value(wr_val, rd_val, "SLV0_WR_REG"));
    14.  
    15.       // slv1 with len=16, prio=1, en=1
    16.       wr_val = (2<<3)+(1<<1)+1;
    17.       test.write_reg(`SLV1_RW_ADDR, wr_val);
    18.       test.read_reg(`SLV1_RW_ADDR, rd_val);
    19.       void'(test.diff_value(wr_val, rd_val, "SLV1_WR_REG"));
    20.  
    21.       // slv2 with len=32, prio=2, en=1
    22.       wr_val = (3<<3)+(2<<1)+1;
    23.       test.write_reg(`SLV2_RW_ADDR, wr_val);
    24.       test.read_reg(`SLV2_RW_ADDR, rd_val);
    25.       void'(test.diff_value(wr_val, rd_val, "SLV2_WR_REG"));
    26.  
    27.       // send IDLE command
    28.       test.idle_reg();
    29.     endtask
    30.  
    31.     task cb_do_formatter();
    32.       super.cb_do_formatter();
    33.       void'(test.fmt_gen.randomize() with {fifo == LONG_FIFO; bandwidth == HIGH_WIDTH;});
    34.       test.fmt_gen.start();
    35.     endtask
    36.  
    37.     task cb_do_data();
    38.       super.cb_do_data();
    39.       void'(test.chnl_gens[0].randomize() with {ntrans==100; ch_id==0; data_nidles==0; pkt_nidles==1; data_size==8; });
    40.       void'(test.chnl_gens[1].randomize() with {ntrans==100; ch_id==1; data_nidles==1; pkt_nidles==4; data_size==16;});
    41.       void'(test.chnl_gens[2].randomize() with {ntrans==100; ch_id==2; data_nidles==2; pkt_nidles==8; data_size==32;});
    42.       fork
    43.         test.chnl_gens[0].start();
    44.         test.chnl_gens[1].start();
    45.         test.chnl_gens[2].start();
    46.       join
    47.       #10us; // wait until all data haven been transfered through MCDF
    48.     endtask
    49.   endclass: cb_mcdf_data_consistence_basic

    注意：原来test中用this.的地方表示当前类，在回调函数中改成test.1

    4在mcdf_base_test中添加新的end_of_elaboration_phase函数；利用uvm_root类设置信息冗余度为UVM_high；利用uvm_root::set_report_max_quit_count()函数设置仿真退出的最大数值；利用uvm_root::set_timeout()设置仿真的最大时间长度

    1.     function void end_of_elaboration_phase(uvm_phase phase);
    2.       super.end_of_elaboration_phase(phase);
    3.       uvm_root::get().set_report_verbosity_level_hier(UVM_HIGH);
    4.       uvm_root::get().set_report_max_quit_count(1);
    5.       uvm_root::get().set_timeout(10ms);
    6.     endfunction

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  • 原文地址：https://blog.csdn.net/weixin_39668316/article/details/126365299