[Intel-gfx] [PATCH i-g-t v4 6/6] tests/kms_ccs: Test case for wrong aux buffer stride size

[Gabriel Krisman Bertazi]

Two scenarios tested:
  - unaligned stride
  - Stride too small

Signed-off-by: Gabriel Krisman Bertazi <kris...@collabora.co.uk>
---
 tests/kms_ccs.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/tests/kms_ccs.c b/tests/kms_ccs.c
index 2d7105eb1323..cb6e69c69ae5 100644
--- a/tests/kms_ccs.c
+++ b/tests/kms_ccs.c
@@ -35,14 +35,18 @@ enum test_flags {
        TEST_BAD_ROTATION_90            = 1 << 4,
        TEST_NO_AUX_BUFFER              = 1 << 5,
        TEST_BAD_CCS_HANDLE             = 1 << 6,
+       TEST_BAD_AUX_STRIDE             = 1 << 7,
 };
 
 #define TEST_FAIL_ON_ADDFB2 \
-       (TEST_BAD_PIXEL_FORMAT | TEST_NO_AUX_BUFFER | TEST_BAD_CCS_HANDLE)
+       (TEST_BAD_PIXEL_FORMAT | TEST_NO_AUX_BUFFER | TEST_BAD_CCS_HANDLE | \
+        TEST_BAD_AUX_STRIDE)
 
 enum test_fb_flags {
        FB_COMPRESSED                   = 1 << 0,
        FB_HAS_PLANE                    = 1 << 1,
+       FB_MISALIGN_AUX_STRIDE          = 1 << 2,
+       FB_SMALL_AUX_STRIDE             = 1 << 3,
 };
 
 typedef struct {
@@ -324,6 +328,14 @@ static void generate_fb(data_t *data, struct igt_fb *fb,
                int ccs_pitches = ALIGN(ccs_width * 1, 128);
                int ccs_offsets = size[0];
 
+               if (fb_flags & FB_MISALIGN_AUX_STRIDE)
+                       ccs_pitches -= 64;
+               else if (fb_flags & FB_SMALL_AUX_STRIDE) {
+                       igt_skip_on_f(width <= 1024,
+                                     "FB already has the smallest possible 
stride\n");
+                       ccs_pitches = ALIGN(ccs_width/2, 128);
+               }
+
                size[1] = ccs_pitches * ALIGN(ccs_height, 32);
 
                f.handles[0] = gem_create(data->drm_fd, size[0] + size[1]);
@@ -470,6 +482,11 @@ static void test_output(data_t *data)
                try_config(data, fb_flags | FB_COMPRESSED);
        }
 
+       if (data->flags & TEST_BAD_AUX_STRIDE) {
+               try_config(data, fb_flags | FB_COMPRESSED | 
FB_MISALIGN_AUX_STRIDE);
+               try_config(data, fb_flags | FB_COMPRESSED | 
FB_SMALL_AUX_STRIDE);
+       }
+
        primary = igt_output_get_plane_type(data->output, 
DRM_PLANE_TYPE_PRIMARY);
        igt_plane_set_fb(primary, NULL);
        igt_plane_set_rotation(primary, IGT_ROTATION_0);
@@ -543,6 +560,10 @@ igt_main
                data.flags = TEST_BAD_CCS_HANDLE;
                igt_subtest_f("pipe-%s-ccs-on-another-bo", pipe_name)
                        test_output(&data);
+
+               data.flags = TEST_BAD_AUX_STRIDE;
+               igt_subtest_f("pipe-%s-bad-aux-stride", pipe_name)
+                       test_output(&data);
        }
 
        igt_fixture
-- 
2.11.0

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