tests: Make a fb-tiling subtest to check for invalid tiling changes.

In 2013 we prevented changing the tiling of an active framebuffer:

commit 80075d492f8773209e26d11d6bb13ba624ef95a4
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Oct 9 21:23:52 2013 +0200

    drm/i915: prevent tiling changes on framebuffer backing storage

After this we no longer have any use for the bad-tiling subtest, and
only have to make sure changing tiling on a fb is not allowed.

Remove the original bad-tiling subtest, and add a i915_fb_tiling
subtest for this case.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[mlankhorst: Fix build system changes]
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/tests/i915/fb_tiling.c b/tests/i915/fb_tiling.c
new file mode 100644
index 00000000..7d5c3f1f
--- /dev/null
+++ b/tests/i915/fb_tiling.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include "igt.h"
+
+IGT_TEST_DESCRIPTION("Object tiling must be fixed after framebuffer creation.");
+
+igt_simple_main
+{
+	int drm_fd = drm_open_driver_master(DRIVER_INTEL);
+	struct igt_fb fb;
+	int ret;
+
+	igt_create_fb(drm_fd, 512, 512, DRM_FORMAT_XRGB8888,
+		      LOCAL_I915_FORMAT_MOD_X_TILED, &fb);
+
+	ret = __gem_set_tiling(drm_fd, fb.gem_handle, I915_TILING_X, fb.strides[0]);
+	igt_assert_eq(ret, 0);
+
+	ret = __gem_set_tiling(drm_fd, fb.gem_handle, I915_TILING_NONE, fb.strides[0]);
+	igt_assert_eq(ret, -EBUSY);
+
+	igt_remove_fb(drm_fd, &fb);
+	close(drm_fd);
+}