The main goal of this subtest is to trigger the following warning in
the function i915_gem_object_get_fence():
        if (WARN_ON(!obj->map_and_fenceable))

To trigger this warning, the subtest first creates a Y-tiled object and
an associated framebuffer with the Y-fb modifier. Furthermore, to
prevent the map_and_fenceable from being set, we make sure that
the object does not have a normal VMA by refraining from rendering to the
object and by setting the rotation property upfront before calling commit.

v2: Do not call paint_squares and just use one output.

v3: Convert an if condition to igt_require and move the plane rotation
requirement further up before the fb allocation.

Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Signed-off-by: Vivek Kasireddy <vivek.kasire...@intel.com>
---
 tests/kms_rotation_crc.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/tests/kms_rotation_crc.c b/tests/kms_rotation_crc.c
index cc9847e..b25a949 100644
--- a/tests/kms_rotation_crc.c
+++ b/tests/kms_rotation_crc.c
@@ -264,6 +264,68 @@ static void test_plane_rotation(data_t *data, enum 
igt_plane plane_type)
        igt_require_f(valid_tests, "no valid crtc/connector combinations 
found\n");
 }
 
+static void test_plane_rotation_ytiled_obj(data_t *data, enum igt_plane 
plane_type)
+{
+       igt_display_t *display = &data->display;
+       uint64_t tiling = LOCAL_I915_FORMAT_MOD_Y_TILED;
+       uint32_t format = DRM_FORMAT_XRGB8888;
+       int bpp = igt_drm_format_to_bpp(format);
+       enum igt_commit_style commit = COMMIT_LEGACY;
+       int fd = data->gfx_fd;
+       igt_output_t *output = &display->outputs[0];
+       igt_plane_t *plane;
+       drmModeModeInfo *mode;
+       unsigned int stride, size, w, h;
+       uint32_t gem_handle;
+       int ret;
+
+       igt_require(output != NULL && output->valid == true);
+
+       plane = igt_output_get_plane(output, plane_type);
+       igt_require(igt_plane_supports_rotation(plane));
+
+       if (plane_type == IGT_PLANE_PRIMARY || plane_type == IGT_PLANE_CURSOR) {
+               igt_require(data->display.has_universal_planes);
+               commit = COMMIT_UNIVERSAL;
+       }
+
+       mode = igt_output_get_mode(output);
+       w = mode->hdisplay;
+       h = mode->vdisplay;
+
+       for (stride = 512; stride < (w * bpp / 8); stride *= 2)
+               ;
+       for (size = 1024*1024; size < stride * h; size *= 2)
+               ;
+
+       gem_handle = gem_create(fd, size);
+       ret = __gem_set_tiling(fd, gem_handle, I915_TILING_Y, stride);
+       igt_assert(ret == 0);
+
+       do_or_die(__kms_addfb(fd, gem_handle, w, h, stride,
+                 format, tiling, LOCAL_DRM_MODE_FB_MODIFIERS,
+                 &data->fb.fb_id));
+       data->fb.width = w;
+       data->fb.height = h;
+       data->fb.gem_handle = gem_handle;
+
+       igt_plane_set_fb(plane, NULL);
+       igt_display_commit(display);
+
+       igt_plane_set_rotation(plane, data->rotation);
+       igt_plane_set_fb(plane, &data->fb);
+
+       drmModeObjectSetProperty(fd, plane->drm_plane->plane_id,
+                                DRM_MODE_OBJECT_PLANE,
+                                plane->rotation_property,
+                                plane->rotation);
+       ret = igt_display_try_commit2(display, commit);
+
+       kmstest_restore_vt_mode();
+       igt_remove_fb(fd, &data->fb);
+       igt_assert(ret == 0);
+}
+
 igt_main
 {
        data_t data = {};
@@ -345,6 +407,12 @@ igt_main
                test_plane_rotation(&data, IGT_PLANE_PRIMARY);
        }
 
+       igt_subtest_f("primary-rotation-90-Y-tiled") {
+               igt_require(gen >= 9);
+               data.rotation = IGT_ROTATION_90;
+               test_plane_rotation_ytiled_obj(&data, IGT_PLANE_PRIMARY);
+       }
+
        igt_fixture {
                igt_display_fini(&data.display);
        }
-- 
2.4.3

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