igt/vc4_tiling: Test vc4's new set/get_tiling ioctls.

This just checks that the appropriate errors get thrown, and that the
modifier can be set/get successfully, and that the modifier doesn't
leak to other BO allocations.  Testing of scanout will be done with
the writeback support that Boris is building.  The modifier has no
effect on V3D rendering, so no need to test that.

v2: Add to the meson build.

Signed-off-by: Eric Anholt <eric@anholt.net>

1 files changed, 21 insertions, 0 deletions

diff --git a/lib/igt_vc4.c b/lib/igt_vc4.c
index c4682f56..5347af8d 100644
--- a/lib/igt_vc4.c
+++ b/lib/igt_vc4.c
@@ -128,3 +128,24 @@ igt_vc4_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot)
 	else
 		return ptr;
 }
+
+void igt_vc4_set_tiling(int fd, uint32_t handle, uint64_t modifier)
+{
+	struct drm_vc4_set_tiling set = {
+		.handle = handle,
+		.modifier = modifier,
+	};
+
+	do_ioctl(fd, DRM_IOCTL_VC4_SET_TILING, &set);
+}
+
+uint64_t igt_vc4_get_tiling(int fd, uint32_t handle)
+{
+	struct drm_vc4_get_tiling get = {
+		.handle = handle,
+	};
+
+	do_ioctl(fd, DRM_IOCTL_VC4_GET_TILING, &get);
+
+	return get.modifier;
+}