Sending the response from Driver to Sequence at the middle of driver transactions

UVM
,
1

Design has SPI interface , where there is continuous toggling MOSI lines. In the Driver each set of bits is decoded to perform respective tasks .

class driver_spi extends uvm_driver#(spi_pkt);
--
task get_addr_data();
for (i=15;i>=0;i=i-1)
  begin 
  @(posedge spi_if.spi_clk);
      addr[i] = spi_if.spi_mosi;
   end 
for (i=31;i>=0;i=i-1)
  begin 
  @(posedge spi_if.spi_clk);
      data[i] = spi_if.spi_mosi;
   end 
endtask


task drive();
  forever 
  begin
    seq_item_port.get_next_item(req);
    fork 
      $display ( "In Addr decoding phase");
      get_addr_data();
      $display ( "In Data decoding phase");
      get_addr_data();
     join 
    seq_item_port.item_done();
  end
endtask 
---
endclass:driver_spi

Need to know spi_mosi[23] bit during the data_phase, which needs to be send back to sequence , based on the validity of bit in sequence, need to stop the testcase .

considering seq_item_port.item_done(rsp); that would provide rsp after all transactions.

Please suggest how this can be achieved.

2

In reply to shpa:

Looks like this is a pipelined behavior. You can split the run_phase in a command and a data phase.
After the command phase has been finished you can do the item_done and then waiting for your data.
Meanwhile the next command phase might be initiated.
Find here more details:
https://verificationacademy.com/cookbook/driver/pipelined