yyn Posted September 23, 2011 Report Share Posted September 23, 2011 Dear all, I made interrupt sequence. For interrupt opeartion, I use grab/ungrab function from UVM. But I have a problem not to grab. My testbench has 4 sequencers from interface UVC, so virtual sequence handles this. My interrupt sequence is based on uvm_reg_sequence. And I start the interrupt sequence in virtual sequence class and this virtual sequence is started in virtual sequencer. #-------------- class int_seq_c extends uvm_reg_sequence; ... ... virutal task body(); forever begin @(posedge interrupt); grab(regmodel.default_map.get_sequencer()); // Sequencer of AXI bus is get. // clear interrupt ungrab(regmodel.default_map.get_sequencer()); end endtask endclass class int_virt_seq_c extends uvm_sequence; int_seq_c int_seq; virutal task body(); int_seq = int_seq_c::type_id::create("int_seq"); int_seq.start(null); endtask endclass class my_virtual_sequencer extends uvm_sequencer; ... ... virtual task run_phase(uvm_phase phase); int_virt_seq = int_virt_seq_c::type_id::create("int_virt_seq"); fork int_virt_seq.start(this); join_none endtask endclass I checked grab startus in int_seq_c class using "is_grabbed()" function after executing "grab()" task. But 0 value is returned. What is my problem? How can I fix my problem? Thanks and Regards, // yyn Quote Link to comment Share on other sites More sharing options...
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