[Intel-gfx] [PATCH v2 5/7] tests/kms_ccs: Test case where CCS and main buffer overlaps

[Gabriel Krisman Bertazi]

Signed-off-by: Gabriel Krisman Bertazi <krisman at collabora.co.uk>
---
 tests/kms_ccs.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/tests/kms_ccs.c b/tests/kms_ccs.c
index cc41c85c4964..06d34a80b108 100644
--- a/tests/kms_ccs.c
+++ b/tests/kms_ccs.c
@@ -34,10 +34,11 @@ enum test_flags {
 	TEST_BAD_PIXEL_FORMAT		= 1 << 3,
 	TEST_BAD_ROTATION_90		= 1 << 4,
 	TEST_NO_AUX_BUFFER		= 1 << 5,
+	TEST_BAD_CCS_OFFSET		= 1 << 6,
 };
 
 #define TEST_FAIL_ON_ADDFB2 \
-	(TEST_BAD_PIXEL_FORMAT | TEST_NO_AUX_BUFFER)
+	(TEST_BAD_PIXEL_FORMAT | TEST_NO_AUX_BUFFER | TEST_BAD_CCS_OFFSET)
 
 enum test_fb_flags {
 	FB_COMPRESSED			= 1 << 0,
@@ -321,7 +322,13 @@ static void generate_fb(data_t *data, struct igt_fb *fb,
 		int ccs_height = ALIGN(height, 16) / 16;
 		f.pitches[1] = ALIGN(ccs_width * 1, 128);
 		f.modifier[1] = modifier;
-		f.offsets[1] = size[0];
+
+		if (data->flags & TEST_BAD_CCS_OFFSET) {
+			/* Overlap CCS buffer with the color buffer. */
+			f.offsets[1] = 0;
+		} else
+			f.offsets[1] = size[0];
+
 		size[1] = f.pitches[1] * ALIGN(ccs_height, 32);
 
 		f.handles[0] = gem_create(data->drm_fd, size[0] + size[1]);
@@ -454,7 +461,8 @@ static void test_output(data_t *data)
 
 	if (data->flags & TEST_BAD_PIXEL_FORMAT ||
 	    data->flags & TEST_BAD_ROTATION_90 ||
-	    data->flags & TEST_NO_AUX_BUFFER) {
+	    data->flags & TEST_NO_AUX_BUFFER ||
+	    data->flags & TEST_BAD_CCS_OFFSET) {
 		try_config(data, fb_flags | FB_COMPRESSED);
 	}
 
@@ -528,6 +536,10 @@ igt_main
 		igt_subtest_f("pipe-%s-missing-ccs-buffer", pipe_name)
 			test_output(&data);
 
+		data.flags = TEST_BAD_CCS_OFFSET;
+		igt_subtest_f("pipe-%s-invalid-ccs-offset", pipe_name)
+			test_output(&data);
+
 	}
 
 	igt_fixture
-- 
2.11.0