using port/export to connect 2 monitors

[cat]

I'm trying to do some sequence layering and I want to connect the monitor in my Lower agent to the monitor in my Upper agent with a put tlm. I am getting a compile error. I don't want to use analysis ports because it is 1-1 transfer. It is working on the sequencer side.

monitor side:

class U_monitor extends uvm_monitor;

uvm_blocking_put_imp #(U_trans, U_monitor) U_trans_export; //to allow lower layer to send trans if has_interface=0

...

class L_adapter_monitor extends L_monitor;

uvm_blocking_put_port#(uvm_sequence_item) Utrans_port; //sends to upper agent

...

env:

L_adpt_mon.Utrans_port.connect(U_agent_h[1].mon.U_trans_export);

error:

Error-[iCTTFC] Incompatible complex type usage

../testbench/env.sv, 84

Incompatible complex type usage in task or function call.

The following expression is incompatible with the formal parameter of the

function. The type of the actual is 'class

uvm_pkg::uvm_blocking_put_imp#(class $unit::U_trans,class

$unit::U_monitor)', while the type of the formal is 'class

uvm_pkg::uvm_port_base#(class uvm_pkg::uvm_tlm_if_base#(class

uvm_pkg::uvm_sequence_item,class uvm_pkg::uvm_sequence_item))'. Expression:

this.U_agent_h[1].mon.U_trans_export

Source info:

this.L_adpt_mon.Utrans_port.connect(this.U_agent_h[1].mon.U_trans_export)

sequencer side: (working)

class L_adapter_sequencer#(type Utrans=uvm_sequence_item) extends L_sequencer;

uvm_seq_item_pull_port#(Utrans) Utrans_port; //to comminicate with upper agent

env:

L_adpt_seqr.Utrans_port.connect(U_agent_h[1].seqr.seq_item_export);

[petermonsson]

Hi cat,

The object(s) you're sending through the TLM channel don't match. You're trying to connect a uvm_blocking_put_port#(type T=uvm_sequence_item, type IMP=int) to a uvm_blocking_put_imp #(type T=U_trans, type IMP=U_monitor). try making both type T and type IMP match.

Best Regards

Peter

[jadec]

The types (T) must match uvm_blocking_put_port doesn't have a second type parameter. In addition, your U_monitor class will need to implement the task put( T arg ) to accept the put data.