日志
uvm: tlm 1.0
| ||
driver, monitor等不太需要，但实现复杂的scoreboard和coverage collector，需要用到UVM tlm1.0 或2.0的功能，但tlm 1.0简单实用，比较流行。
1. push
Producer: uvm_blocking_put_port.put()
Consumer:
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: build_phase
virtual task put(packet(packet tr);
//process tr
endtask: put
endclass
2. get
Producer:
class producer extends uvm_component;
uvm_blocking_get_imp#(packet, producer) get_export;
function new(string name, uvm_component parent);
super.new(name, parent);
...
get_export = new("get_export");
endfunction
//implement "get()"
virtual task get(packet tr); ... endtask: get
endclass
Consumer:
class consumer extends uvm_component;
uvm_blocking_get_port get_port;
function new(string name, uvm_component parent);
super.new(name, parent);
...
get_port = new("get_port");
endfunction virtual task main_phase(uvm_phase phase);
...
get_port.get(tr);
...
endtask: main_phase
Env connection:
class env extends uvm_env;
...
producer p; consumer c;
virtual function void connect_phase(uvm_phase phase);
c.get_port.connect(p.get_export);
endfunction: connect_phase
...
endclass
endclass
3. fifo
class env extends uvm_env;
...
uvm_tlm_fifo #(packet) tr_fifo
...
virtual function void build_phase(uvm_phase phase);
p = producer::type_id::create("p", this);
c = consumer::type_id::create("c", this);
tr_fifo = new("tr_fifo", this);
endfunction: build_phase
virtual function void connect_phase(uvm_phase phase);
p.put_port.connect(tr_fifo.put_export);
c.get_port.connect(tr_fifo.get_export);
endfunction: connect_phase
...
endclass
4. uvm_analysis (broadcast)
uvm_analysis_port: producer call "write()"
uvm_analysis_imp: receiver implement "write()"
uvm_analysis_export: receiver: hierarchical "port_through", used to connect
如果component需要2个或2个以上的imp：
`uvm_analysis_imp_decl(_before)
`uvm_analysis_imp_decl(_after)
...
//implement write function
virtual function void write_before（before b_tr)
virtual function void write_after （after a_tr)
`uvm_analysis_imp_before #(before, packet) before_export;
`uvm_analysis_imp_after #(after, packet) after_export
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