fpga: rfnoc: Add support for 512-bit CHDR widths

This fixes the rfnoc_null_src_sink, chdr_crossbar_nxn, and
chdr_stream_endpoint blocks so that wider CHDR widths are properly
supported. It also updates PkgChdrBfm to able to properly test these
blocks. The testbenches have been updated to test both 64 and 512-bit
widths.


Original-commit: 3af8dcaacfa4bf36dcae3bdbf0b353385b7063c6

sim/rfnoc/PkgTestExec.sv

@@ -5,7 +5,7 @@
 //
 // Module: PkgTestExec
 //
-// Description: This package provides infrastructure for tracking the state of 
+// Description: This package provides infrastructure for tracking the state of
 // testbench execution and the results of each test.
 //
 
@@ -29,6 +29,7 @@ package PkgTestExec;
     int    num_assertions;            // Number of assertions checked for the current test
     time   start_time, end_time;      // Start and end time of the testbench
     bit    stop_on_error = 1;         // Configuration option to stop when an error occurs
+    bit    done = 0;                  // Flag that sets when tb is finished
     bit    test_status[$];            // Pass/fail status of each test
 
     timeout_t tb_timeout;             // Handle to timeout for the overall testbench
@@ -54,7 +55,7 @@ package PkgTestExec;
       // Get the sempahore, to prevent multiple overlapping instances of the
       // same testbench.
       test_sem.get();
-
+      done = 0;
       $display("========================================================");
       $display("TESTBENCH STARTED: %s", tb_name);
       $display("========================================================");
@@ -65,8 +66,8 @@ package PkgTestExec;
       num_finished = 0;
       num_passed   = 0;
       start_timeout(
-        tb_timeout, 
-        time_limit, 
+        tb_timeout,
+        time_limit,
         $sformatf("Testbench \"%s\" time limit exceeded", tb_name),
         SEV_FATAL
       );
@@ -75,7 +76,7 @@ package PkgTestExec;
 
     // Call end_tb() at the end of a testbench to report final statistics and,
     // optionally, end simulation.
-    //    
+    //
     //    finish:  Set to 1 (default) to cause $finish() to be called at the
     //             end of simulation, cuasing the simulator to close.
     //
@@ -83,7 +84,6 @@ package PkgTestExec;
       assert (num_started == num_finished) else begin
         $fatal(1, "Testbench ended before test completed");
       end
-
       end_time = $time;
       $display("========================================================");
       $display("TESTBENCH FINISHED: %s", tb_name);
@@ -98,6 +98,7 @@ package PkgTestExec;
 
       end_timeout(tb_timeout);
 
+      done = 1;
       if (finish) $finish();
 
       // Release the semaphore to allow new instances of the testbench to run
@@ -118,8 +119,8 @@ package PkgTestExec;
       // Create a timeout for this test
       if (time_limit > 0) begin
         start_timeout(
-          test_timeout, 
-          time_limit, 
+          test_timeout,
+          time_limit,
           $sformatf("Test \"%s\" time limit exceeded", test_name),
           SEV_FATAL
         );
@@ -133,7 +134,7 @@ package PkgTestExec;
     endtask : start_test
 
 
-    // Call end_test() at the end of each test. 
+    // Call end_test() at the end of each test.
     //
     //   test_result:  Optional value to indicate the overall pass/fail result
     //                 of the test. Use non-zero for pass, 0 for fail.
@@ -149,7 +150,7 @@ package PkgTestExec;
 
       passed = test_status[num_started-1] && test_result;
       num_finished++;
-      $display("[TEST CASE %3d] (t = %t) DONE... %s", 
+      $display("[TEST CASE %3d] (t = %t) DONE... %s",
                num_started, $time, passed ? "Passed" : "FAILED");
 
       if (passed) num_passed++;
@@ -163,7 +164,7 @@ package PkgTestExec;
     //
     //   expr:     The expression value to be asserted
     //   message:  String to report if the assertion fails
-    //  
+    //
     function void assert_error(int expr, string message = "");
       num_assertions++;
       assert (expr) else begin
@@ -178,7 +179,7 @@ package PkgTestExec;
     //
     //   expr:     The expression value to be asserted
     //   message:  String to report if the assertion fails
-    //  
+    //
     function void assert_fatal(int expr, string message = "");
       num_assertions++;
       assert (expr) else begin
@@ -192,7 +193,7 @@ package PkgTestExec;
     //
     //   expr:     The expression value to be asserted
     //   message:  String to report if the assertion fails
-    //  
+    //
     function void assert_warning(int expr, string message = "");
       num_assertions++;
       assert (expr) else begin
@@ -209,7 +210,7 @@ package PkgTestExec;
     //   severity:  Indicates the type of severity task that should be used if
     //              the assertion fails ($info, $warning, $error, $fatal).
     //              Default value is SEV_ERROR.
-    //  
+    //
     function void assert_sev(
       int        expr,
       string     message = "",
@@ -249,8 +250,8 @@ package PkgTestExec;
     //                   used if the timeout expires. Default is SEV_ERROR.
     //
     task start_timeout(
-      output timeout_t  handle, 
-      input  realtime   timeout_delay, 
+      output timeout_t  handle,
+      input  realtime   timeout_delay,
       input  string     message = "Timeout",
       input  severity_t severity = SEV_ERROR
     );