[PATCH i-g-t 12/15] tests/xe_copy_basic: add subtest to verify mem-copy in pages

[Zbigniew Kempczyński]

Mem-copy in linear mode supports copying in 256B pages. Verify is
it properly handled in intel_blt.

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
Cc: Francois Dugast <francois.dugast at intel.com>
---
 tests/intel/xe_copy_basic.c | 56 ++++++++++++++++++++++++++++++++++---
 1 file changed, 52 insertions(+), 4 deletions(-)

diff --git a/tests/intel/xe_copy_basic.c b/tests/intel/xe_copy_basic.c
index 28c1878be9..7cd21131e0 100644
--- a/tests/intel/xe_copy_basic.c
+++ b/tests/intel/xe_copy_basic.c
@@ -48,6 +48,20 @@ struct rect {
  * @0xfffe: 0xfffe
  * @0x8fffe: 0x8fffe
  */
+
+/**
+ *
+ * SUBTEST: mem-page-copy-%s
+ * Description: Test validates MEM_COPY command, it takes various
+ *              parameters needed for the filling batch buffer for MEM_COPY command
+ *              with size %arg[1].
+ * Test category: functionality test
+ *
+ * arg[1]:
+ * @1: 1
+ * @17: 17
+ */
+
 static void
 mem_copy(int fd, uint32_t src_handle, uint32_t dst_handle, const intel_ctx_t *ctx,
 	 enum blt_memop_type type, enum blt_memop_mode mode,
@@ -62,23 +76,45 @@ mem_copy(int fd, uint32_t src_handle, uint32_t dst_handle, const intel_ctx_t *ct
 	uint8_t src_mocs = intel_get_uc_mocs_index(fd);
 	uint8_t dst_mocs = src_mocs;
 	uint32_t bb;
-	int result;
+	uint8_t *psrc, *pdst;
+	int result, i;
 
 	bb = xe_bo_create(fd, 0, bb_size, region, 0);
 
-	blt_mem_copy_init(fd, &mem, MODE_BYTE, TYPE_LINEAR);
+	blt_mem_copy_init(fd, &mem, mode, type);
 	blt_set_mem_object(&mem.src, src_handle, size, width, width, height,
 			   region, src_mocs, DEFAULT_PAT_INDEX, COMPRESSION_DISABLED);
 	blt_set_mem_object(&mem.dst, dst_handle, size, width, width, height,
 			   region, dst_mocs, DEFAULT_PAT_INDEX, COMPRESSION_DISABLED);
 	mem.src.ptr = xe_bo_map(fd, src_handle, size);
 	mem.dst.ptr = xe_bo_map(fd, dst_handle, size);
+	psrc = (uint8_t *) mem.src.ptr;
+	pdst = (uint8_t *) mem.dst.ptr;
+
+	srand(time(NULL));
+
+	/* Randomize whole src */
+	for (i = 0; i < size; i++)
+		psrc[i] = rand();
 
 	blt_set_batch(&mem.bb, bb, bb_size, region);
 	igt_assert(mem.src.width == mem.dst.width);
 
 	blt_mem_copy(fd, ctx, NULL, ahnd, &mem);
-	result = memcmp(mem.src.ptr, mem.dst.ptr, mem.src.size);
+
+	if (type == TYPE_LINEAR && mode == MODE_BYTE) {
+		result = memcmp(psrc, pdst, width);
+
+		/* Rest of dst must contain 0 */
+		for (i = width; i < size; i++) {
+			if (pdst[i] != 0) {
+				result = -1;
+				break;
+			}
+		}
+	} else {
+		result = memcmp(psrc, pdst, pitch << 8);
+	}
 
 	intel_allocator_bind(ahnd, 0, 0);
 	munmap(mem.src.ptr, size);
@@ -86,7 +122,7 @@ mem_copy(int fd, uint32_t src_handle, uint32_t dst_handle, const intel_ctx_t *ct
 	gem_close(fd, bb);
 	put_ahnd(ahnd);
 
-	igt_assert_f(!result, "source and destination differ\n");
+	igt_assert_f(!result, "destination doesn't contain valid data\n");
 }
 
 /**
@@ -176,6 +212,8 @@ igt_main
 				 { 0, 0x3fff, 1 },
 				 { 0, 0xfffe, 1 },
 				 { 0, 0x8fffe, 1 } };
+	struct rect page[] = { { 0, 1, 1, MODE_PAGE },
+			       { 0, 17, 1, MODE_PAGE }};
 
 	igt_fixture {
 		fd = drm_open_driver(DRIVER_XE);
@@ -195,6 +233,16 @@ igt_main
 		}
 	}
 
+	for (int i = 0; i < ARRAY_SIZE(page); i++) {
+		igt_subtest_f("mem-page-copy-%u", page[i].width) {
+			igt_require(blt_has_mem_copy(fd));
+			for_each_variation_r(regions, 1, set) {
+				region = igt_collection_get_value(regions, 0);
+				copy_test(fd, &page[i], MEM_COPY, region);
+			}
+		}
+	}
+
 	for (int i = 0; i < ARRAY_SIZE(linear); i++) {
 		igt_subtest_f("mem-set-linear-0x%x", linear[i].width) {
 			igt_require(blt_has_mem_set(fd));
-- 
2.43.0