sample_tests1.v

基于xilinx vierex5得pci express dma设计实现。

else if(testname == "sample_smoke_test0")
begin


    TSK_SIMULATION_TIMEOUT(5050);

    //System Initialization
    TSK_SYSTEM_INITIALIZATION;
    
    $display("[%t] : Expected Device/Vendor ID = %x", $realtime, DEV_VEN_ID); 
    
    //--------------------------------------------------------------------------
    // Read core configuration space via PCIe fabric interface
    //--------------------------------------------------------------------------

    $display("[%t] : Reading from PCI/PCI-Express Configuration Register 0x00", $realtime);

    TSK_TX_TYPE0_CONFIGURATION_READ(DEFAULT_TAG, 12'h0, 4'hF);
    TSK_WAIT_FOR_READ_DATA;
    if  (P_READ_DATA != DEV_VEN_ID) begin
        $display("[%t] : TEST FAILED --- Data Error Mismatch, Write Data %x != Read Data %x", $realtime, 
                                    DEV_VEN_ID, P_READ_DATA);
    end
    else begin
        $display("[%t] : TEST PASSED --- Device/Vendor ID %x successfully received", $realtime, P_READ_DATA);
    end

  $finish;
end


else if(testname == "sample_smoke_test1")
begin

    // This test use tlp expectation tasks.

    TSK_SIMULATION_TIMEOUT(5050);

    //System Initialization
    TSK_SYSTEM_INITIALIZATION;
fork
  begin
    //--------------------------------------------------------------------------
    // Read core configuration space via PCIe fabric interface
    //--------------------------------------------------------------------------

    $display("[%t] : Reading from PCI/PCI-Express Configuration Register 0x00", $realtime);

    TSK_TX_TYPE0_CONFIGURATION_READ(DEFAULT_TAG, 12'h0, 4'hF);
    DEFAULT_TAG = DEFAULT_TAG + 1;
    TSK_TX_CLK_EAT(100);
  end
    //---------------------------------------------------------------------------
    // List Rx TLP expections
    //---------------------------------------------------------------------------
  begin
    test_vars[0] = 0;                                                                                                                         
                                          
    $display("[%t] : Expected Device/Vendor ID = %x", $realtime, DEV_VEN_ID);                                              

    expect_cpld_payload[0] = DEV_VEN_ID[7:0]; 
    expect_cpld_payload[1] = DEV_VEN_ID[15:8]; 
    expect_cpld_payload[2] = DEV_VEN_ID[23:16]; 
    expect_cpld_payload[3] = DEV_VEN_ID[31:24]; 
    `BOARD.`XILINX_PCI_EXP_DOWNSTREAM_PORT_INST.com_usrapp.TSK_EXPECT_CPLD(
      3'h0, //traffic_class;
      1'b0, //td;
      1'b0, //ep;
      2'h0, //attr;
      10'h1, //length;
      16'h0000, //completer_id;
      3'h0, //completion_status;
      1'b0, //bcm;
      12'h4, //byte_count;
      16'h01a0, //requester_id;
      8'h0, //tag;
      7'b0, //address_low;
      expect_status //expect_status;
    );

    if (expect_status) 
      test_vars[0] = test_vars[0] + 1;      
  end
join
  
  expect_finish_check = 1;

  if (test_vars[0] == 1)
    $display("[%t] : TEST PASSED --- Finished transmission of PCI-Express TLPs", $realtime);
  else
    $display("[%t] : TEST FAILED --- Haven't Received All Expected TLPs", $realtime);

  $finish;
end