RAL frontdoor hang

UVM
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1

Hi,

I am using RAL with a frontdoor sequence for accesses over JTAG.

In one TC I am blocking the DUT queue on purpose and trigger a ral.jtag_read() expecting a timeout.
After this point I am not able to use the frontdoor sequence anymore.



ral.jtag_read(); // normal JTAG read

dut_block(); // do something which is expected to block the DUT queue

fork begin
   fork
   begin
      ral.jtag_read(); // should block
      test_failed();
      `uvm_fatal("my_test", "No timeout! Queue not blocked!")
   end
   begin
      #50us;
      `uvm_info("my_test", "OK - Read timeout", UVM_LOW)
   end
   join_any
   disable fork;
end join

// everything should return to normal
m_sequencer.stop_sequences();
dut_flush();


fork begin
   fork
   begin
      ral.jtag_read(); // should NOT block
      `uvm_info("my_test", "Read OK", UVM_LOW)
   end
   begin
      #50us;
      test_failed();
      `uvm_fatal("my_test", "Timeout!")
   end
   join_any
   disable fork;
end join

What should I do to have the frontdoor sequence working again?