[PATCH i-g-t v3 2/2] tests/xe_ccs: Update compression check based on flat-ccs enablement

[Akshata Jahagirdar]

In Xe2+ platforms, we need to run this test regardless of the status of
flat-ccs. Check if the platform supports compression and has flat ccs enabled,
and if it doesn't, then update the checks based on  compression
accordingly and  proceed with the test.

Additionally, On Xe2 dGPU, compression is only supported with VRAM. When copying from
VRAM -> system memory the KMD uses mapping with uncompressed PAT
so the copy in system memory is guaranteed to be uncompressed.
When restoring such buffers from system memory -> VRAM the KMD can't
easily know which pages were originally compressed, so we always use
uncompressed -> uncompressed here.
so this means that there's no need for extra CCS storage on such
platforms.
Thats why we shouldn't need to run suspend-resume on xe2 dgpu.

Signed-off-by: Akshata Jahagirdar <akshata.jahagirdar at intel.com>
---
 tests/intel/xe_ccs.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/tests/intel/xe_ccs.c b/tests/intel/xe_ccs.c
index 725495dc9..645995b4a 100644
--- a/tests/intel/xe_ccs.c
+++ b/tests/intel/xe_ccs.c
@@ -162,8 +162,11 @@ static void surf_copy(int xe,
 						      (void *)mid->ptr, mid->size);
 
 		munmap(ccsmap2, ccssize);
-		igt_assert(!strcmp(orig, newsum));
-		igt_assert(!strcmp(orig2, newsum2));
+		if (AT_LEAST_GEN(xe, 20) && is_intel_dgfx(xe) &&
+			!blt_platform_has_flat_ccs_enabled(xe)) {
+				igt_assert(!strcmp(orig, newsum));
+				igt_assert(!strcmp(orig2, newsum2));
+			}
 		g_free(orig);
 		g_free(orig2);
 		g_free(newsum);
@@ -193,7 +196,8 @@ static void surf_copy(int xe,
 	intel_ctx_xe_sync(ctx, true);
 	WRITE_PNG(xe, run_id, "corrupted", &blt.dst, dst->x2, dst->y2, bpp);
 	result = memcmp(src->ptr, dst->ptr, src->size);
-	igt_assert(result != 0);
+	if (AT_LEAST_GEN(xe, 20) && !blt_platform_has_flat_ccs_enabled(xe))
+		igt_assert(result != 0);
 
 	/* retrieve back ccs */
 	memcpy(ccsmap, ccscopy, ccssize);
@@ -365,8 +369,9 @@ static void block_copy(int xe,
 	 * xmajor.
 	 */
 	if (mid->compression && MIN_EXP_WH(width, height)) {
-		if (mid_tiling != T_LINEAR || FROM_EXP_WH(width, height))
-			igt_assert(memcmp(src->ptr, mid->ptr, src->size) != 0);
+		if (AT_LEAST_GEN(xe, 20) && !blt_platform_has_flat_ccs_enabled(xe))
+			if (mid_tiling != T_LINEAR || FROM_EXP_WH(width, height))
+				igt_assert(memcmp(src->ptr, mid->ptr, src->size) != 0);
 	}
 
 	WRITE_PNG(xe, run_id, "mid", &blt.dst, width, height, bpp);
-- 
2.34.1