Initial Commit - Forked from PeakRDL-regblock @ a440cc19769069be831d267505da4f3789a26695

tests/test_counter_basics/tb_template.sv

@@ -0,0 +1,147 @@
+{% extends "lib/tb_base.sv" %}
+
+{% block seq %}
+    {% sv_line_anchor %}
+    ##1;
+    cb.rst <= '0;
+    ##1;
+
+    //--------------------------------------------------------------------------
+    // Test simple counters
+    //--------------------------------------------------------------------------
+    // up
+    cpuif.assert_read('h0, 'hD, 'h000F);
+    cb.hwif_in.simple.implied_up.incr <= '1;
+    repeat(4) @cb;
+    cb.hwif_in.simple.implied_up.incr <= '0;
+    cpuif.assert_read('h0, 'h1, 'h000F);
+
+    // up
+    cpuif.assert_read('h0, 'hD0, 'h00F0);
+    cb.hwif_in.simple.up.incr <= '1;
+    repeat(4) @cb;
+    cb.hwif_in.simple.up.incr <= '0;
+    cpuif.assert_read('h0, 'h10, 'h00F0);
+
+    // down
+    cpuif.assert_read('h0, 'h400, 'h0F00);
+    cb.hwif_in.simple.down.decr <= '1;
+    repeat(6) @cb;
+    cb.hwif_in.simple.down.decr <= '0;
+    cpuif.assert_read('h0, 'hE00, 'h0F00);
+
+    // up/down via hw
+    cpuif.assert_read('h0, 'h0000, 'hF000);
+    cb.hwif_in.simple.updown.incr <= '1;
+    repeat(6) @cb;
+    cb.hwif_in.simple.updown.incr <= '0;
+    cpuif.assert_read('h0, 'h6000, 'hF000);
+    cb.hwif_in.simple.updown.decr <= '1;
+    repeat(6) @cb;
+    cb.hwif_in.simple.updown.decr <= '0;
+    cpuif.assert_read('h0, 'h0000, 'hF000);
+    cb.hwif_in.simple.updown.decr <= '1;
+    repeat(6) @cb;
+    cb.hwif_in.simple.updown.decr <= '0;
+    cpuif.assert_read('h0, 'hA000, 'hF000);
+    cb.hwif_in.simple.updown.incr <= '1;
+    repeat(6) @cb;
+    cb.hwif_in.simple.updown.incr <= '0;
+    cpuif.assert_read('h0, 'h0000, 'hF000);
+
+    // up/down external underflow
+    fork
+        begin
+            ##0;
+            forever begin
+                assert(cb.hwif_out.simple.updown.value == 0);
+                if(cb.hwif_out.simple.updown.underflow) break;
+                @cb;
+            end
+            @cb;
+            forever begin
+                assert(cb.hwif_out.simple.updown.value == 15);
+                assert(cb.hwif_out.simple.updown.underflow == 0);
+                @cb;
+            end
+        end
+
+        begin
+            repeat(2) @cb;
+            cb.hwif_in.simple.updown.decr <= '1;
+            @cb;
+            cb.hwif_in.simple.updown.decr <= '0;
+            repeat(2) @cb;
+        end
+    join_any
+    disable fork;
+
+    // up/down external overflow
+    fork
+        begin
+            ##0;
+            forever begin
+                assert(cb.hwif_out.simple.updown.value == 15);
+                if(cb.hwif_out.simple.updown.overflow) break;
+                @cb;
+            end
+            @cb;
+            forever begin
+                assert(cb.hwif_out.simple.updown.value == 0);
+                assert(cb.hwif_out.simple.updown.overflow == 0);
+                @cb;
+            end
+        end
+
+        begin
+            repeat(2) @cb;
+            cb.hwif_in.simple.updown.incr <= '1;
+            @cb;
+            cb.hwif_in.simple.updown.incr <= '0;
+            repeat(2) @cb;
+        end
+    join_any
+    disable fork;
+
+
+    // up/down via sw
+    cpuif.assert_read('h0, 'h00000, 'hF0000);
+    repeat(3) cpuif.write('h0, 'h4000_0000); // incr
+    cpuif.assert_read('h0, 'h90000, 'hF0000);
+    repeat(3) cpuif.write('h0, 'h8000_0000); // decr
+    cpuif.assert_read('h0, 'h00000, 'hF0000);
+    repeat(3) cpuif.write('h0, 'h8000_0000); // decr
+    cpuif.assert_read('h0, 'h70000, 'hF0000);
+    repeat(3) cpuif.write('h0, 'h4000_0000); // incr
+    cpuif.assert_read('h0, 'h00000, 'hF0000);
+
+    // up/down via hw + external dynamic stepsize
+    cpuif.assert_read('h0, 'h000000, 'hF00000);
+    cb.hwif_in.simple.updown3.incrvalue <= 'h2;
+    repeat(3) cpuif.write('h0, 'h4000_0000); // incr
+    cpuif.assert_read('h0, 'h600000, 'hF00000);
+    cpuif.assert_read('h4, 'h00_00); // no overflows or underflows
+    cb.hwif_in.simple.updown3.decrvalue <= 'h3;
+    repeat(3) cpuif.write('h0, 'h8000_0000); // decr
+    cpuif.assert_read('h0, 'hD00000, 'hF00000);
+    cpuif.assert_read('h4, 'h01_00); // one underflow
+    cb.hwif_in.simple.updown3.incrvalue <= 'h1;
+    repeat(2) cpuif.write('h0, 'h4000_0000); // incr
+    cpuif.assert_read('h0, 'hF00000, 'hF00000);
+    cpuif.assert_read('h4, 'h00_00); // no overflows or underflows
+    repeat(1) cpuif.write('h0, 'h4000_0000); // incr
+    cpuif.assert_read('h0, 'h000000, 'hF00000);
+    cpuif.assert_read('h4, 'h00_01); // one overflow
+    repeat(32) cpuif.write('h0, 'h4000_0000); // incr
+    cpuif.assert_read('h0, 'h000000, 'hF00000);
+    cpuif.assert_read('h4, 'h00_02); // overflow
+
+    // up/down via hw + referenced dynamic stepsize
+    cpuif.assert_read('h0, 'h0000000, 'hF000000);
+    repeat(4) cpuif.write('h0, 'h4000_0000 + (2'h3 << 28)); // + 3
+    cpuif.assert_read('h0, 'hC000000, 'hF000000);
+    repeat(4) cpuif.write('h0, 'h8000_0000 + (2'h1 << 28)); // - 1
+    cpuif.assert_read('h0, 'h8000000, 'hF000000);
+    repeat(2) cpuif.write('h0, 'h8000_0000 + (2'h3 << 28)); // - 3
+    cpuif.assert_read('h0, 'h2000000, 'hF000000);
+{% endblock %}