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Parameterized UVM Environment Creation Issue.

Selvavinayak

Hi all, 

  when we are trying to create Parameterized UVM environment, we are not able to pass parameter from top to bottom of the component.Please help Us to solve this Issue, Our Dummy Environment should be like below,

class driver (parameter DATAWIDTH)

bit[DATAWIDTH-1:0]data;

endclass:driver

class agent(parameter DATAWIDTH)

driver#(DATAWIDTH) driver_m;

class agent

class env();

  agent#() agent_m[];

function new();

  

endfunction

function build_phase();

  agent_m=new[3];

  agent_m[0]=agent#(32)::type_id::create("agent", this)

  agent_m[1]=agent#(64)::type_id::create("agent", this)

  agent_m[2]=agent#(128)::type_id::create("agent", this)

endfunction

endclass:env

we need to create agent with different parameters. we tried but, parameter value is not passing correctly some time we are facing fatal error.

Is any one have experience with this environment. please share the Information

Thanks,

selvavinayakam.na

Parents

  • Thanks for your response Tudor timi, now I checked with single agent flow like below, class driver (parameter DATAWIDTH=32)

    bit[DATAWIDTH-1:0]data;

    endclass:driver

    class agent(parameter DATAWIDTH=32)

    driver#(DATAWIDTH) driver_m; function build_phase();
    driver_m = driver#(DATAWIDTH)::type_id::create("driver", this); endfunction
    endclass agent

    class env();

    agent#(64) agent_m;

    function build_phase();

    agent_m=agent#(64)::type_id::create("agent", this)

    endfunction

    endclass:env when we Tried above setup we are getting below error, driver_m = driver#(DATAWIDTH)::type_id::create("driver", this);
    |
    ncelab: *E,TYCMPAT (agent.sv,15|58): assignment operator type check failed (expecting datatype compatible with 'class $unit::driver#(.DATAWIDTH(32))' but found 'class $unit::driver#(.DATAWIDTH(64))' instead).
    can you please share Information how to solve This Issue. thanks, selvavinayakam.na

Reply

  • Thanks for your response Tudor timi, now I checked with single agent flow like below, class driver (parameter DATAWIDTH=32)

    bit[DATAWIDTH-1:0]data;

    endclass:driver

    class agent(parameter DATAWIDTH=32)

    driver#(DATAWIDTH) driver_m; function build_phase();
    driver_m = driver#(DATAWIDTH)::type_id::create("driver", this); endfunction
    endclass agent

    class env();

    agent#(64) agent_m;

    function build_phase();

    agent_m=agent#(64)::type_id::create("agent", this)

    endfunction

    endclass:env when we Tried above setup we are getting below error, driver_m = driver#(DATAWIDTH)::type_id::create("driver", this);
    |
    ncelab: *E,TYCMPAT (agent.sv,15|58): assignment operator type check failed (expecting datatype compatible with 'class $unit::driver#(.DATAWIDTH(32))' but found 'class $unit::driver#(.DATAWIDTH(64))' instead).
    can you please share Information how to solve This Issue. thanks, selvavinayakam.na

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