UVM::TLM

TLM : transaction level modeling

TLM classes

uvm_*_export

uvm_*_imp

uvm_*_port

uvm_*_fifo

uvm_*_socket

PUSH mode

producer call port.put();

consumer implement put();

class producer extends uvm_component;

uvm_blocking_put_port #(packet) put_port;

function void_build_phase(uvm_phase phase);

put_port = new("put_port", this);

endfunction

virtual task initial_tr();

put_port.put(tr);

endtask

endmodule

class consumer extends uvm_component();

uvm_blocking_put_imp #(packet, consumer) put_export;

function void_build_phase(uvm_phase phase);

put_export = new("put_export", this);

endfunction

virtual task put(packet tr);

process_tr(tr);

endtask

endmodule

class env_test extends uvm_env;

producer p;

consumer c;

virtual function void connect_phase(uvm_phase phase);

p.put_port.connect(c.put_export);

endfunction

endclass

PULL mode

FIFO mode

class env_test extends uvm_env;

producer p;

consumer c;

uvm_tlm_fifo #(packet) tr_fifo;

virtual function void build_phase(uvm_phase phase);

p = producer::type_id::creare("p",this);

c = consumer::type_id::create("c",this);

tr_fifo = new("tr_fifo",this);

endfunction

virtual function void connect_phase(uvm_phase phase);

//p.put_port.connect(c.put_export); // push mode

p.put_port.connect(tr_fifo.put_export);

c.get_port.connect(tr_fifo.get_export);

endfunction

endclass

一般是push/pull + fifo 来使用