igt/vc4_wait_bo: Add tests with rendering performed.

These caught an unexpected bug with clear colors (we'd get the last
executed clear's color in our new BO), while failing to catch the bug
I'd been hoping to find all along.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/tests/vc4_wait_bo.c b/tests/vc4_wait_bo.c
index 1b924642..65a085a3 100644
--- a/tests/vc4_wait_bo.c
+++ b/tests/vc4_wait_bo.c
@@ -34,6 +34,38 @@
 #include <sys/ioctl.h>
 #include "vc4_drm.h"
 
+static void
+test_used_bo(int fd, uint64_t timeout)
+{
+	size_t size = 4096;
+	uint32_t clearval = 0xaabbccdd + timeout;
+	int handle = igt_vc4_get_cleared_bo(fd, size, clearval);
+	struct drm_vc4_wait_bo wait = {
+		.timeout_ns = timeout,
+		.handle = handle,
+	};
+	int ret, i;
+
+	ret = ioctl(fd, DRM_IOCTL_VC4_WAIT_BO, &wait);
+	if (timeout == ~0ull) {
+		igt_assert_eq_u32(ret, 0);
+	} else {
+		if (ret == -1 && errno == ETIME)
+			igt_debug("Timeout triggered\n");
+		igt_assert(ret == 0 || (ret == -1 && errno == ETIME));
+	}
+
+	if (ret == 0) {
+		uint32_t *map = igt_vc4_mmap_bo(fd, handle, size, PROT_READ);
+		for (i = 0; i < size / 4; i++) {
+			igt_assert_eq_u32(map[i], clearval);
+		}
+		munmap((void *)map, size);
+	}
+
+	gem_close(fd, handle);
+}
+
 igt_main
 {
 	int fd;
@@ -77,6 +109,15 @@ igt_main
 		do_ioctl(fd, DRM_IOCTL_VC4_WAIT_BO, &arg);
 	}
 
+	igt_subtest("used-bo-0ns")
+		test_used_bo(fd, 0);
+
+	igt_subtest("used-bo-1ns")
+		test_used_bo(fd, 1);
+
+	igt_subtest("used-bo")
+		test_used_bo(fd, ~0ull);
+
 	igt_fixture
 		close(fd);
 }