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More test coverage

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This commit is contained in:
Alex Mykyta
2023-08-03 22:18:55 -07:00
parent f9e0d1babc
commit 5c3dd6e6bb
5 changed files with 239 additions and 10 deletions
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91
tests/test_swacc_swmod/tb_template.sv
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@@ -6,6 +6,7 @@
logic [7:0] rd_data;
logic [7:0] latched_data;
int event_count;
bit fired;
latched_data = 'x;
##1;
@@ -33,15 +34,35 @@
begin
cpuif.read('h0, rd_data);
@cb;
repeat(4) @cb;
end
join_any
disable fork;
assert(rd_data == latched_data) else $error("Read returned 0x%0x but swacc strobed during 0x%0x", rd_data, latched_data);
assert(event_count == 1) else $error("Observed excess swacc events: %0d", event_count);
// Verify that writing a read-only register with no side effects never asserts swmod
cb.hwif_in.r1.f.next <= 'h99;
@cb;
fork
begin
##0;
forever begin
assert(cb.hwif_out.r1.f.swmod == 0);
@cb;
end
end
begin
cpuif.write('h0, 'h0);
cpuif.assert_read('h0, 'h99);
repeat(4) @cb;
end
join_any
disable fork;
// Verify that hwif changes 1 cycle after swmod
fired = 0;
fork
begin
##0;
@@ -50,6 +71,7 @@
if(cb.hwif_out.r2.f.swmod) break;
@cb;
end
fired = 1;
@cb;
forever begin
assert(cb.hwif_out.r2.f.value == 21);
@@ -60,12 +82,14 @@
begin
cpuif.write('h1, 21);
@cb;
repeat(4) @cb;
end
join_any
disable fork;
assert(fired);
// Verify that hwif changes 1 cycle after swmod
fired = 0;
fork
begin
##0;
@@ -74,6 +98,7 @@
if(cb.hwif_out.r3.f.swmod) break;
@cb;
end
fired = 1;
@cb;
forever begin
assert(cb.hwif_out.r3.f.value == 0);
@@ -84,9 +109,69 @@
begin
cpuif.assert_read('h2, 30);
@cb;
repeat(4) @cb;
end
join_any
disable fork;
assert(fired);
// Verify swacc and swmod assert when written
fired = 0;
fork
begin
##0;
forever begin
assert(cb.hwif_out.r4.f.value == 'h12);
if(cb.hwif_out.r4.f.swmod || cb.hwif_out.r4.f.swacc) begin
assert(cb.hwif_out.r4.f.swmod == 1);
assert(cb.hwif_out.r4.f.swacc == 1);
break;
end
@cb;
end
fired = 1;
@cb;
forever begin
assert(cb.hwif_out.r4.f.value == 'h34);
assert(cb.hwif_out.r4.f.swmod == 0);
@cb;
end
end
begin
cpuif.write('h3, 'h34);
repeat(4) @cb;
end
join_any
disable fork;
assert(fired);
// Verify that hwif changes 1 cycle after swmod
fired = 0;
fork
begin
##0;
forever begin
assert(cb.hwif_out.r5.f.value == 30);
if(cb.hwif_out.r5.f.swmod) break;
@cb;
end
fired = 1;
@cb;
forever begin
assert(cb.hwif_out.r5.f.value == 0);
assert(cb.hwif_out.r5.f.swmod == 0);
@cb;
end
end
begin
cpuif.assert_read('h4, 30);
repeat(4) @cb;
end
join_any
disable fork;
assert(fired);
{% endblock %}