diff mbox series

[6/6] drm/format-helper: Add KUnit tests for drm_fb_memcpy()

Message ID 20230721182316.560649-7-arthurgrillo@riseup.net (mailing list archive)
State New, archived
Headers show
Series Increase code coverage on drm_format_helper.c | expand

Commit Message

Arthur Grillo July 21, 2023, 6:23 p.m. UTC
Insert parameterized test for the drm_fb_memcpy() to ensure correctness
and prevent future regressions. The test case can accept different
formats.

Signed-off-by: Arthur Grillo <arthurgrillo@riseup.net>
---
 .../gpu/drm/tests/drm_format_helper_test.c    | 391 ++++++++++++++++++
 1 file changed, 391 insertions(+)

Comments

kernel test robot July 25, 2023, 2:14 p.m. UTC | #1
Hi Arthur,

kernel test robot noticed the following build warnings:

[auto build test WARNING on drm-misc/drm-misc-next]
[also build test WARNING on drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.5-rc3 next-20230725]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Arthur-Grillo/drm-format-helper-Test-default-pitch-fallback/20230722-022649
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/20230721182316.560649-7-arthurgrillo%40riseup.net
patch subject: [PATCH 6/6] drm/format-helper: Add KUnit tests for drm_fb_memcpy()
config: nios2-randconfig-r093-20230723 (https://download.01.org/0day-ci/archive/20230725/202307252148.wr2nafKj-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230725/202307252148.wr2nafKj-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307252148.wr2nafKj-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/gpu/drm/tests/drm_format_helper_test.c:856:36: sparse: sparse: incorrect type in argument 2 (different base types) @@     expected restricted __le32 const [usertype] *buf @@     got unsigned int [usertype] *[assigned] buf @@
   drivers/gpu/drm/tests/drm_format_helper_test.c:856:36: sparse:     expected restricted __le32 const [usertype] *buf
   drivers/gpu/drm/tests/drm_format_helper_test.c:856:36: sparse:     got unsigned int [usertype] *[assigned] buf
   drivers/gpu/drm/tests/drm_format_helper_test.c:1058:34: sparse: sparse: symbol 'fb_build_fourcc_list_cases' was not declared. Should it be static?
>> drivers/gpu/drm/tests/drm_format_helper_test.c:1566:27: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] * @@     got restricted __le32 [usertype] * @@
   drivers/gpu/drm/tests/drm_format_helper_test.c:1566:27: sparse:     expected unsigned int [usertype] *
   drivers/gpu/drm/tests/drm_format_helper_test.c:1566:27: sparse:     got restricted __le32 [usertype] *
   drivers/gpu/drm/tests/drm_format_helper_test.c:1576:29: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] * @@     got restricted __le32 [usertype] * @@
   drivers/gpu/drm/tests/drm_format_helper_test.c:1576:29: sparse:     expected unsigned int [usertype] *
   drivers/gpu/drm/tests/drm_format_helper_test.c:1576:29: sparse:     got restricted __le32 [usertype] *

vim +1566 drivers/gpu/drm/tests/drm_format_helper_test.c

  1539	
  1540	static void drm_test_fb_memcpy(struct kunit *test)
  1541	{
  1542		const struct multi_plane_op_case *params = test->param_value;
  1543		const struct fb_memcpy_result *result = &params->memcpy_result;
  1544		size_t dst_size[DRM_FORMAT_MAX_PLANES] = { 0 };
  1545		u32 *buf[DRM_FORMAT_MAX_PLANES] = { 0 };
  1546		u32 *src_cp[DRM_FORMAT_MAX_PLANES] = { 0 };
  1547		u32 *expected[DRM_FORMAT_MAX_PLANES] = { 0 };
  1548		struct iosys_map dst[DRM_FORMAT_MAX_PLANES];
  1549		struct iosys_map src[DRM_FORMAT_MAX_PLANES];
  1550	
  1551		struct drm_framebuffer fb = {
  1552			.format = drm_format_info(params->format),
  1553		};
  1554	
  1555		memcpy(fb.pitches, params->src_pitches, DRM_FORMAT_MAX_PLANES * sizeof(int));
  1556	
  1557		for (size_t i = 0; i < fb.format->num_planes; i++) {
  1558			dst_size[i] = conversion_buf_size(params->format, result->dst_pitches[i],
  1559							  &params->clip, i);
  1560			KUNIT_ASSERT_GT(test, dst_size[i], 0);
  1561	
  1562			buf[i] = kunit_kzalloc(test, dst_size[i], GFP_KERNEL);
  1563			KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf[i]);
  1564			iosys_map_set_vaddr(&dst[i], buf[i]);
  1565	
> 1566			src_cp[i] = cpubuf_to_le32(test, params->src[i], TEST_BUF_SIZE);
  1567			iosys_map_set_vaddr(&src[i], src_cp[i]);
  1568		}
  1569	
  1570		if (result->dst_pitches[0] == TEST_USE_DEFAULT_PITCH)
  1571			drm_fb_memcpy(dst, NULL, src, &fb, &params->clip);
  1572		else
  1573			drm_fb_memcpy(dst, result->dst_pitches, src, &fb, &params->clip);
  1574	
  1575		for (size_t i = 0; i < fb.format->num_planes; i++) {
  1576			expected[i] = cpubuf_to_le32(test, result->expected[i], TEST_BUF_SIZE);
  1577			KUNIT_EXPECT_MEMEQ_MSG(test, buf[i], expected[i], dst_size[i],
  1578					       "Failed expectation on plane %zu", i);
  1579		}
  1580	}
  1581
Maíra Canal Aug. 5, 2023, 1:26 p.m. UTC | #2
On 7/21/23 15:23, Arthur Grillo wrote:
> Insert parameterized test for the drm_fb_memcpy() to ensure correctness
> and prevent future regressions. The test case can accept different
> formats.
> 
> Signed-off-by: Arthur Grillo <arthurgrillo@riseup.net>
> ---
>   .../gpu/drm/tests/drm_format_helper_test.c    | 391 ++++++++++++++++++
>   1 file changed, 391 insertions(+)
> 
> diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
> index 6ecd92898e8e..3db4b95f3a98 100644
> --- a/drivers/gpu/drm/tests/drm_format_helper_test.c
> +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
> @@ -1189,6 +1189,396 @@ static void drm_test_fb_build_fourcc_list(struct kunit *test)
>   	KUNIT_EXPECT_MEMEQ(test, fourccs_out, params->expected, TEST_BUF_SIZE);
>   }
>   
> +struct fb_memcpy_result {
> +	unsigned int dst_pitches[DRM_FORMAT_MAX_PLANES];
> +	const u32 expected[DRM_FORMAT_MAX_PLANES][TEST_BUF_SIZE];
> +};
> +
> +struct multi_plane_op_case {
> +	const char *name;
> +	u32 format;
> +	struct drm_rect clip;
> +	unsigned int src_pitches[DRM_FORMAT_MAX_PLANES];
> +	const u32 src[DRM_FORMAT_MAX_PLANES][TEST_BUF_SIZE];
> +	struct fb_memcpy_result memcpy_result;
> +};
> +
> +/* The `src` and `expected` buffers are u32 arrays. To deal with planes that
> + * have a cpp != 4 the values are stored together on the same u32 number in a
> + * way so the order in memory is correct in a little-endian machine.
> + *
> + * Because of that, on some occasions, parts of a u32 will not be part of the
> + * test, to make this explicit the 0xFF byte is used on those parts.
> + */
> +
> +static struct multi_plane_op_case multi_plane_op_cases[] = {
> +	{
> +		.name = "single_pixel_source_buffer",
> +		.format = DRM_FORMAT_XRGB8888,
> +		.clip = DRM_RECT_INIT(0, 0, 1, 1),
> +		.src_pitches = { 1 * 4 },
> +		.src = {{ 0x01020304 }},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {{ 0x01020304 }},
> +		}
> +	},
> +	{
> +		.name = "single_pixel_source_buffer",
> +		.format = DRM_FORMAT_XRGB8888_A8,
> +		.clip = DRM_RECT_INIT(0, 0, 1, 1),
> +		.src_pitches = { 1 * 4, 1 },
> +		.src = {
> +			{ 0x01020304 },
> +			{ 0xFFFFFF01 },
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {
> +				{ 0x01020304 },
> +				{ 0x00000001 },
> +			},
> +		},
> +	},

Some tests have the same description name. Could you distinct them with
different names?

Best Regards,
- Maíra

> +	{
> +		.name = "single_pixel_source_buffer",
> +		.format = DRM_FORMAT_YUV444,
> +		.clip = DRM_RECT_INIT(0, 0, 1, 1),
> +		.src_pitches = { 1, 1, 1 },
> +		.src = {
> +			{ 0xFFFFFF01 },
> +			{ 0xFFFFFF01 },
> +			{ 0xFFFFFF01 },
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {
> +				{ 0x00000001 },
> +				{ 0x00000001 },
> +				{ 0x00000001 },
> +			},
> +		},
> +	},
> +	{
> +		.name = "single_pixel_clip_rectangle",
> +		.format = DRM_FORMAT_XBGR8888,
> +		.clip = DRM_RECT_INIT(1, 1, 1, 1),
> +		.src_pitches = { 2 * 4 },
> +		.src = {
> +			{
> +				0x00000000, 0x00000000,
> +				0x00000000, 0x01020304,
> +			},
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {
> +				{ 0x01020304 },
> +			},
> +		},
> +	},
> +	{
> +		.name = "single_pixel_clip_rectangle",
> +		.format = DRM_FORMAT_XRGB8888_A8,
> +		.clip = DRM_RECT_INIT(1, 1, 1, 1),
> +		.src_pitches = { 2 * 4, 2 * 1 },
> +		.src = {
> +			{
> +				0x00000000, 0x00000000,
> +				0x00000000, 0x01020304,
> +			},
> +			{ 0x01000000 },
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {
> +				{ 0x01020304 },
> +				{ 0x00000001 },
> +			},
> +		},
> +	},
> +	{
> +		.name = "single_pixel_clip_rectangle",
> +		.format = DRM_FORMAT_YUV444,
> +		.clip = DRM_RECT_INIT(1, 1, 1, 1),
> +		.src_pitches = { 2 * 1, 2 * 1, 2 * 1 },
> +		.src = {
> +			{ 0x01000000 },
> +			{ 0x01000000 },
> +			{ 0x01000000 },
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {
> +				{ 0x00000001 },
> +				{ 0x00000001 },
> +				{ 0x00000001 },
> +			},
> +		},
> +	},
> +	{
> +		.name = "well_known_colors",
> +		.format = DRM_FORMAT_XBGR8888,
> +		.clip = DRM_RECT_INIT(1, 1, 2, 4),
> +		.src_pitches = { 4 * 4 },
> +		.src = {
> +			{
> +				0x00000000, 0x00000000, 0x00000000, 0x00000000,
> +				0x00000000, 0x11FFFFFF, 0x22000000, 0x00000000,
> +				0x00000000, 0x33FF0000, 0x4400FF00, 0x00000000,
> +				0x00000000, 0x550000FF, 0x66FF00FF, 0x00000000,
> +				0x00000000, 0x77FFFF00, 0x8800FFFF, 0x00000000,
> +			},
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {
> +				{
> +					0x11FFFFFF, 0x22000000,
> +					0x33FF0000, 0x4400FF00,
> +					0x550000FF, 0x66FF00FF,
> +					0x77FFFF00, 0x8800FFFF,
> +				},
> +			},
> +		},
> +	},
> +	{
> +		.name = "well_known_colors",
> +		.format = DRM_FORMAT_XRGB8888_A8,
> +		.clip = DRM_RECT_INIT(1, 1, 2, 4),
> +		.src_pitches = { 4 * 4, 4 * 1 },
> +		.src = {
> +			{
> +				0x00000000, 0x00000000, 0x00000000, 0x00000000,
> +				0x00000000, 0xFFFFFFFF, 0xFF000000, 0x00000000,
> +				0x00000000, 0xFFFF0000, 0xFF00FF00, 0x00000000,
> +				0x00000000, 0xFF0000FF, 0xFFFF00FF, 0x00000000,
> +				0x00000000, 0xFFFFFF00, 0xFF00FFFF, 0x00000000,
> +			},
> +			{
> +				0x00000000,
> +				0x00221100,
> +				0x00443300,
> +				0x00665500,
> +				0x00887700,
> +			},
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {
> +				{
> +					0xFFFFFFFF, 0xFF000000,
> +					0xFFFF0000, 0xFF00FF00,
> +					0xFF0000FF, 0xFFFF00FF,
> +					0xFFFFFF00, 0xFF00FFFF,
> +				},
> +				{
> +					0x44332211,
> +					0x88776655,
> +				},
> +			},
> +		},
> +	},
> +	{
> +		.name = "well_known_colors",
> +		.format = DRM_FORMAT_YUV444,
> +		.clip = DRM_RECT_INIT(1, 1, 2, 4),
> +		.src_pitches = { 4 * 1, 4 * 1, 4 * 1 },
> +		.src = {
> +			{
> +				0x00000000,
> +				0x0000FF00,
> +				0x00954C00,
> +				0x00691D00,
> +				0x00B2E100,
> +			},
> +			{
> +				0x00000000,
> +				0x00000000,
> +				0x00BEDE00,
> +				0x00436500,
> +				0x00229B00,
> +			},
> +			{
> +				0x00000000,
> +				0x00000000,
> +				0x007E9C00,
> +				0x0083E700,
> +				0x00641A00,
> +			},
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
> +			.expected = {
> +				{
> +					0x954C00FF,
> +					0xB2E1691D,
> +				},
> +				{
> +					0xBEDE0000,
> +					0x229B4365,
> +				},
> +				{
> +					0x7E9C0000,
> +					0x641A83E7,
> +				},
> +			},
> +		},
> +	},
> +	{
> +		.name = "destination_pitch",
> +		.format = DRM_FORMAT_XBGR8888,
> +		.clip = DRM_RECT_INIT(0, 0, 3, 3),
> +		.src_pitches = { 3 * 4 },
> +		.src = {
> +			{
> +				0xA10E449C, 0xB1114D05, 0xC1A8F303,
> +				0xD16CF073, 0xA20E449C, 0xB2114D05,
> +				0xC2A80303, 0xD26CF073, 0xA30E449C,
> +			},
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { 5 * 4 },
> +			.expected = {
> +				{
> +					0xA10E449C, 0xB1114D05, 0xC1A8F303, 0x00000000, 0x00000000,
> +					0xD16CF073, 0xA20E449C, 0xB2114D05, 0x00000000, 0x00000000,
> +					0xC2A80303, 0xD26CF073, 0xA30E449C, 0x00000000, 0x00000000,
> +				},
> +			},
> +		},
> +	},
> +	{
> +		.name = "destination_pitch",
> +		.format = DRM_FORMAT_XRGB8888_A8,
> +		.clip = DRM_RECT_INIT(0, 0, 3, 3),
> +		.src_pitches = { 3 * 4, 3 * 1 },
> +		.src = {
> +			{
> +				0xFF0E449C, 0xFF114D05, 0xFFA8F303,
> +				0xFF6CF073, 0xFF0E449C, 0xFF114D05,
> +				0xFFA80303, 0xFF6CF073, 0xFF0E449C,
> +			},
> +			{
> +				0xB2C1B1A1,
> +				0xD2A3D1A2,
> +				0xFFFFFFC2,
> +			},
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { 5 * 4, 5 * 1 },
> +			.expected = {
> +				{
> +					0xFF0E449C, 0xFF114D05, 0xFFA8F303, 0x00000000, 0x00000000,
> +					0xFF6CF073, 0xFF0E449C, 0xFF114D05, 0x00000000, 0x00000000,
> +					0xFFA80303, 0xFF6CF073, 0xFF0E449C, 0x00000000, 0x00000000,
> +				},
> +				{
> +					0x00C1B1A1,
> +					0xD1A2B200,
> +					0xD2A30000,
> +					0xFF0000C2,
> +				},
> +			},
> +		},
> +	},
> +	{
> +		.name = "destination_pitch",
> +		.format = DRM_FORMAT_YUV444,
> +		.clip = DRM_RECT_INIT(0, 0, 3, 3),
> +		.src_pitches = { 3 * 1, 3 * 1, 3 * 1 },
> +		.src = {
> +			{
> +				0xBAC1323D,
> +				0xBA34323D,
> +				0xFFFFFF3D,
> +			},
> +			{
> +				0xE1ABEC2A,
> +				0xE1EAEC2A,
> +				0xFFFFFF2A,
> +			},
> +			{
> +				0xBCEBE4D7,
> +				0xBC65E4D7,
> +				0xFFFFFFD7,
> +			},
> +		},
> +		.memcpy_result = {
> +			.dst_pitches = { 5 * 1, 5 * 1, 5 * 1 },
> +			.expected = {
> +				{
> +					0x00C1323D,
> +					0x323DBA00,
> +					0xBA340000,
> +					0xFF00003D,
> +				},
> +				{
> +					0x00ABEC2A,
> +					0xEC2AE100,
> +					0xE1EA0000,
> +					0xFF00002A,
> +				},
> +				{
> +					0x00EBE4D7,
> +					0xE4D7BC00,
> +					0xBC650000,
> +					0xFF0000D7,
> +				},
> +			},
> +		},
> +	},
> +};
> +
> +static void multi_plane_op_case_desc(struct multi_plane_op_case *t, char *desc)
> +{
> +	snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s: %p4cc", t->name, &t->format);
> +}
> +
> +KUNIT_ARRAY_PARAM(multi_plane_op, multi_plane_op_cases, multi_plane_op_case_desc);
> +
> +static void drm_test_fb_memcpy(struct kunit *test)
> +{
> +	const struct multi_plane_op_case *params = test->param_value;
> +	const struct fb_memcpy_result *result = &params->memcpy_result;
> +	size_t dst_size[DRM_FORMAT_MAX_PLANES] = { 0 };
> +	u32 *buf[DRM_FORMAT_MAX_PLANES] = { 0 };
> +	u32 *src_cp[DRM_FORMAT_MAX_PLANES] = { 0 };
> +	u32 *expected[DRM_FORMAT_MAX_PLANES] = { 0 };
> +	struct iosys_map dst[DRM_FORMAT_MAX_PLANES];
> +	struct iosys_map src[DRM_FORMAT_MAX_PLANES];
> +
> +	struct drm_framebuffer fb = {
> +		.format = drm_format_info(params->format),
> +	};
> +
> +	memcpy(fb.pitches, params->src_pitches, DRM_FORMAT_MAX_PLANES * sizeof(int));
> +
> +	for (size_t i = 0; i < fb.format->num_planes; i++) {
> +		dst_size[i] = conversion_buf_size(params->format, result->dst_pitches[i],
> +						  &params->clip, i);
> +		KUNIT_ASSERT_GT(test, dst_size[i], 0);
> +
> +		buf[i] = kunit_kzalloc(test, dst_size[i], GFP_KERNEL);
> +		KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf[i]);
> +		iosys_map_set_vaddr(&dst[i], buf[i]);
> +
> +		src_cp[i] = cpubuf_to_le32(test, params->src[i], TEST_BUF_SIZE);
> +		iosys_map_set_vaddr(&src[i], src_cp[i]);
> +	}
> +
> +	if (result->dst_pitches[0] == TEST_USE_DEFAULT_PITCH)
> +		drm_fb_memcpy(dst, NULL, src, &fb, &params->clip);
> +	else
> +		drm_fb_memcpy(dst, result->dst_pitches, src, &fb, &params->clip);
> +
> +	for (size_t i = 0; i < fb.format->num_planes; i++) {
> +		expected[i] = cpubuf_to_le32(test, result->expected[i], TEST_BUF_SIZE);
> +		KUNIT_EXPECT_MEMEQ_MSG(test, buf[i], expected[i], dst_size[i],
> +				       "Failed expectation on plane %zu", i);
> +	}
> +}
> +
>   static struct kunit_case drm_format_helper_test_cases[] = {
>   	KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_gray8, convert_xrgb8888_gen_params),
>   	KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb332, convert_xrgb8888_gen_params),
> @@ -1204,6 +1594,7 @@ static struct kunit_case drm_format_helper_test_cases[] = {
>   	KUNIT_CASE_PARAM(drm_test_fb_swab, convert_xrgb8888_gen_params),
>   	KUNIT_CASE_PARAM(drm_test_fb_clip_offset, clip_offset_gen_params),
>   	KUNIT_CASE_PARAM(drm_test_fb_build_fourcc_list, fb_build_fourcc_list_gen_params),
> +	KUNIT_CASE_PARAM(drm_test_fb_memcpy, multi_plane_op_gen_params),
>   	{}
>   };
>
Arthur Grillo Aug. 9, 2023, 8:01 p.m. UTC | #3
On 05/08/23 10:26, Maira Canal wrote:
> On 7/21/23 15:23, Arthur Grillo wrote:
>> Insert parameterized test for the drm_fb_memcpy() to ensure correctness
>> and prevent future regressions. The test case can accept different
>> formats.
>>
>> Signed-off-by: Arthur Grillo <arthurgrillo@riseup.net>
>> ---
>>   .../gpu/drm/tests/drm_format_helper_test.c    | 391 ++++++++++++++++++
>>   1 file changed, 391 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
>> index 6ecd92898e8e..3db4b95f3a98 100644
>> --- a/drivers/gpu/drm/tests/drm_format_helper_test.c
>> +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
>> @@ -1189,6 +1189,396 @@ static void drm_test_fb_build_fourcc_list(struct kunit *test)
>>       KUNIT_EXPECT_MEMEQ(test, fourccs_out, params->expected, TEST_BUF_SIZE);
>>   }
>>   +struct fb_memcpy_result {
>> +    unsigned int dst_pitches[DRM_FORMAT_MAX_PLANES];
>> +    const u32 expected[DRM_FORMAT_MAX_PLANES][TEST_BUF_SIZE];
>> +};
>> +
>> +struct multi_plane_op_case {
>> +    const char *name;
>> +    u32 format;
>> +    struct drm_rect clip;
>> +    unsigned int src_pitches[DRM_FORMAT_MAX_PLANES];
>> +    const u32 src[DRM_FORMAT_MAX_PLANES][TEST_BUF_SIZE];
>> +    struct fb_memcpy_result memcpy_result;
>> +};
>> +
>> +/* The `src` and `expected` buffers are u32 arrays. To deal with planes that
>> + * have a cpp != 4 the values are stored together on the same u32 number in a
>> + * way so the order in memory is correct in a little-endian machine.
>> + *
>> + * Because of that, on some occasions, parts of a u32 will not be part of the
>> + * test, to make this explicit the 0xFF byte is used on those parts.
>> + */
>> +
>> +static struct multi_plane_op_case multi_plane_op_cases[] = {
>> +    {
>> +        .name = "single_pixel_source_buffer",
>> +        .format = DRM_FORMAT_XRGB8888,
>> +        .clip = DRM_RECT_INIT(0, 0, 1, 1),
>> +        .src_pitches = { 1 * 4 },
>> +        .src = {{ 0x01020304 }},
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {{ 0x01020304 }},
>> +        }
>> +    },
>> +    {
>> +        .name = "single_pixel_source_buffer",
>> +        .format = DRM_FORMAT_XRGB8888_A8,
>> +        .clip = DRM_RECT_INIT(0, 0, 1, 1),
>> +        .src_pitches = { 1 * 4, 1 },
>> +        .src = {
>> +            { 0x01020304 },
>> +            { 0xFFFFFF01 },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {
>> +                { 0x01020304 },
>> +                { 0x00000001 },
>> +            },
>> +        },
>> +    },
> 
> Some tests have the same description name. Could you distinct them with
> different names?

The test description is formed not only by the `.name` attribute but also by the
string representation of the `.format` attribute, so two test descriptions are
distinct if they have the same `.name` but different `.format`.

Best Regards,
~Arthur Grillo

> 
> Best Regards,
> - Maíra
> 
>> +    {
>> +        .name = "single_pixel_source_buffer",
>> +        .format = DRM_FORMAT_YUV444,
>> +        .clip = DRM_RECT_INIT(0, 0, 1, 1),
>> +        .src_pitches = { 1, 1, 1 },
>> +        .src = {
>> +            { 0xFFFFFF01 },
>> +            { 0xFFFFFF01 },
>> +            { 0xFFFFFF01 },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {
>> +                { 0x00000001 },
>> +                { 0x00000001 },
>> +                { 0x00000001 },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "single_pixel_clip_rectangle",
>> +        .format = DRM_FORMAT_XBGR8888,
>> +        .clip = DRM_RECT_INIT(1, 1, 1, 1),
>> +        .src_pitches = { 2 * 4 },
>> +        .src = {
>> +            {
>> +                0x00000000, 0x00000000,
>> +                0x00000000, 0x01020304,
>> +            },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {
>> +                { 0x01020304 },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "single_pixel_clip_rectangle",
>> +        .format = DRM_FORMAT_XRGB8888_A8,
>> +        .clip = DRM_RECT_INIT(1, 1, 1, 1),
>> +        .src_pitches = { 2 * 4, 2 * 1 },
>> +        .src = {
>> +            {
>> +                0x00000000, 0x00000000,
>> +                0x00000000, 0x01020304,
>> +            },
>> +            { 0x01000000 },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {
>> +                { 0x01020304 },
>> +                { 0x00000001 },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "single_pixel_clip_rectangle",
>> +        .format = DRM_FORMAT_YUV444,
>> +        .clip = DRM_RECT_INIT(1, 1, 1, 1),
>> +        .src_pitches = { 2 * 1, 2 * 1, 2 * 1 },
>> +        .src = {
>> +            { 0x01000000 },
>> +            { 0x01000000 },
>> +            { 0x01000000 },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {
>> +                { 0x00000001 },
>> +                { 0x00000001 },
>> +                { 0x00000001 },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "well_known_colors",
>> +        .format = DRM_FORMAT_XBGR8888,
>> +        .clip = DRM_RECT_INIT(1, 1, 2, 4),
>> +        .src_pitches = { 4 * 4 },
>> +        .src = {
>> +            {
>> +                0x00000000, 0x00000000, 0x00000000, 0x00000000,
>> +                0x00000000, 0x11FFFFFF, 0x22000000, 0x00000000,
>> +                0x00000000, 0x33FF0000, 0x4400FF00, 0x00000000,
>> +                0x00000000, 0x550000FF, 0x66FF00FF, 0x00000000,
>> +                0x00000000, 0x77FFFF00, 0x8800FFFF, 0x00000000,
>> +            },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {
>> +                {
>> +                    0x11FFFFFF, 0x22000000,
>> +                    0x33FF0000, 0x4400FF00,
>> +                    0x550000FF, 0x66FF00FF,
>> +                    0x77FFFF00, 0x8800FFFF,
>> +                },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "well_known_colors",
>> +        .format = DRM_FORMAT_XRGB8888_A8,
>> +        .clip = DRM_RECT_INIT(1, 1, 2, 4),
>> +        .src_pitches = { 4 * 4, 4 * 1 },
>> +        .src = {
>> +            {
>> +                0x00000000, 0x00000000, 0x00000000, 0x00000000,
>> +                0x00000000, 0xFFFFFFFF, 0xFF000000, 0x00000000,
>> +                0x00000000, 0xFFFF0000, 0xFF00FF00, 0x00000000,
>> +                0x00000000, 0xFF0000FF, 0xFFFF00FF, 0x00000000,
>> +                0x00000000, 0xFFFFFF00, 0xFF00FFFF, 0x00000000,
>> +            },
>> +            {
>> +                0x00000000,
>> +                0x00221100,
>> +                0x00443300,
>> +                0x00665500,
>> +                0x00887700,
>> +            },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {
>> +                {
>> +                    0xFFFFFFFF, 0xFF000000,
>> +                    0xFFFF0000, 0xFF00FF00,
>> +                    0xFF0000FF, 0xFFFF00FF,
>> +                    0xFFFFFF00, 0xFF00FFFF,
>> +                },
>> +                {
>> +                    0x44332211,
>> +                    0x88776655,
>> +                },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "well_known_colors",
>> +        .format = DRM_FORMAT_YUV444,
>> +        .clip = DRM_RECT_INIT(1, 1, 2, 4),
>> +        .src_pitches = { 4 * 1, 4 * 1, 4 * 1 },
>> +        .src = {
>> +            {
>> +                0x00000000,
>> +                0x0000FF00,
>> +                0x00954C00,
>> +                0x00691D00,
>> +                0x00B2E100,
>> +            },
>> +            {
>> +                0x00000000,
>> +                0x00000000,
>> +                0x00BEDE00,
>> +                0x00436500,
>> +                0x00229B00,
>> +            },
>> +            {
>> +                0x00000000,
>> +                0x00000000,
>> +                0x007E9C00,
>> +                0x0083E700,
>> +                0x00641A00,
>> +            },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { TEST_USE_DEFAULT_PITCH },
>> +            .expected = {
>> +                {
>> +                    0x954C00FF,
>> +                    0xB2E1691D,
>> +                },
>> +                {
>> +                    0xBEDE0000,
>> +                    0x229B4365,
>> +                },
>> +                {
>> +                    0x7E9C0000,
>> +                    0x641A83E7,
>> +                },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "destination_pitch",
>> +        .format = DRM_FORMAT_XBGR8888,
>> +        .clip = DRM_RECT_INIT(0, 0, 3, 3),
>> +        .src_pitches = { 3 * 4 },
>> +        .src = {
>> +            {
>> +                0xA10E449C, 0xB1114D05, 0xC1A8F303,
>> +                0xD16CF073, 0xA20E449C, 0xB2114D05,
>> +                0xC2A80303, 0xD26CF073, 0xA30E449C,
>> +            },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { 5 * 4 },
>> +            .expected = {
>> +                {
>> +                    0xA10E449C, 0xB1114D05, 0xC1A8F303, 0x00000000, 0x00000000,
>> +                    0xD16CF073, 0xA20E449C, 0xB2114D05, 0x00000000, 0x00000000,
>> +                    0xC2A80303, 0xD26CF073, 0xA30E449C, 0x00000000, 0x00000000,
>> +                },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "destination_pitch",
>> +        .format = DRM_FORMAT_XRGB8888_A8,
>> +        .clip = DRM_RECT_INIT(0, 0, 3, 3),
>> +        .src_pitches = { 3 * 4, 3 * 1 },
>> +        .src = {
>> +            {
>> +                0xFF0E449C, 0xFF114D05, 0xFFA8F303,
>> +                0xFF6CF073, 0xFF0E449C, 0xFF114D05,
>> +                0xFFA80303, 0xFF6CF073, 0xFF0E449C,
>> +            },
>> +            {
>> +                0xB2C1B1A1,
>> +                0xD2A3D1A2,
>> +                0xFFFFFFC2,
>> +            },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { 5 * 4, 5 * 1 },
>> +            .expected = {
>> +                {
>> +                    0xFF0E449C, 0xFF114D05, 0xFFA8F303, 0x00000000, 0x00000000,
>> +                    0xFF6CF073, 0xFF0E449C, 0xFF114D05, 0x00000000, 0x00000000,
>> +                    0xFFA80303, 0xFF6CF073, 0xFF0E449C, 0x00000000, 0x00000000,
>> +                },
>> +                {
>> +                    0x00C1B1A1,
>> +                    0xD1A2B200,
>> +                    0xD2A30000,
>> +                    0xFF0000C2,
>> +                },
>> +            },
>> +        },
>> +    },
>> +    {
>> +        .name = "destination_pitch",
>> +        .format = DRM_FORMAT_YUV444,
>> +        .clip = DRM_RECT_INIT(0, 0, 3, 3),
>> +        .src_pitches = { 3 * 1, 3 * 1, 3 * 1 },
>> +        .src = {
>> +            {
>> +                0xBAC1323D,
>> +                0xBA34323D,
>> +                0xFFFFFF3D,
>> +            },
>> +            {
>> +                0xE1ABEC2A,
>> +                0xE1EAEC2A,
>> +                0xFFFFFF2A,
>> +            },
>> +            {
>> +                0xBCEBE4D7,
>> +                0xBC65E4D7,
>> +                0xFFFFFFD7,
>> +            },
>> +        },
>> +        .memcpy_result = {
>> +            .dst_pitches = { 5 * 1, 5 * 1, 5 * 1 },
>> +            .expected = {
>> +                {
>> +                    0x00C1323D,
>> +                    0x323DBA00,
>> +                    0xBA340000,
>> +                    0xFF00003D,
>> +                },
>> +                {
>> +                    0x00ABEC2A,
>> +                    0xEC2AE100,
>> +                    0xE1EA0000,
>> +                    0xFF00002A,
>> +                },
>> +                {
>> +                    0x00EBE4D7,
>> +                    0xE4D7BC00,
>> +                    0xBC650000,
>> +                    0xFF0000D7,
>> +                },
>> +            },
>> +        },
>> +    },
>> +};
>> +
>> +static void multi_plane_op_case_desc(struct multi_plane_op_case *t, char *desc)
>> +{
>> +    snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s: %p4cc", t->name, &t->format);
>> +}
>> +
>> +KUNIT_ARRAY_PARAM(multi_plane_op, multi_plane_op_cases, multi_plane_op_case_desc);
>> +
>> +static void drm_test_fb_memcpy(struct kunit *test)
>> +{
>> +    const struct multi_plane_op_case *params = test->param_value;
>> +    const struct fb_memcpy_result *result = &params->memcpy_result;
>> +    size_t dst_size[DRM_FORMAT_MAX_PLANES] = { 0 };
>> +    u32 *buf[DRM_FORMAT_MAX_PLANES] = { 0 };
>> +    u32 *src_cp[DRM_FORMAT_MAX_PLANES] = { 0 };
>> +    u32 *expected[DRM_FORMAT_MAX_PLANES] = { 0 };
>> +    struct iosys_map dst[DRM_FORMAT_MAX_PLANES];
>> +    struct iosys_map src[DRM_FORMAT_MAX_PLANES];
>> +
>> +    struct drm_framebuffer fb = {
>> +        .format = drm_format_info(params->format),
>> +    };
>> +
>> +    memcpy(fb.pitches, params->src_pitches, DRM_FORMAT_MAX_PLANES * sizeof(int));
>> +
>> +    for (size_t i = 0; i < fb.format->num_planes; i++) {
>> +        dst_size[i] = conversion_buf_size(params->format, result->dst_pitches[i],
>> +                          &params->clip, i);
>> +        KUNIT_ASSERT_GT(test, dst_size[i], 0);
>> +
>> +        buf[i] = kunit_kzalloc(test, dst_size[i], GFP_KERNEL);
>> +        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf[i]);
>> +        iosys_map_set_vaddr(&dst[i], buf[i]);
>> +
>> +        src_cp[i] = cpubuf_to_le32(test, params->src[i], TEST_BUF_SIZE);
>> +        iosys_map_set_vaddr(&src[i], src_cp[i]);
>> +    }
>> +
>> +    if (result->dst_pitches[0] == TEST_USE_DEFAULT_PITCH)
>> +        drm_fb_memcpy(dst, NULL, src, &fb, &params->clip);
>> +    else
>> +        drm_fb_memcpy(dst, result->dst_pitches, src, &fb, &params->clip);
>> +
>> +    for (size_t i = 0; i < fb.format->num_planes; i++) {
>> +        expected[i] = cpubuf_to_le32(test, result->expected[i], TEST_BUF_SIZE);
>> +        KUNIT_EXPECT_MEMEQ_MSG(test, buf[i], expected[i], dst_size[i],
>> +                       "Failed expectation on plane %zu", i);
>> +    }
>> +}
>> +
>>   static struct kunit_case drm_format_helper_test_cases[] = {
>>       KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_gray8, convert_xrgb8888_gen_params),
>>       KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb332, convert_xrgb8888_gen_params),
>> @@ -1204,6 +1594,7 @@ static struct kunit_case drm_format_helper_test_cases[] = {
>>       KUNIT_CASE_PARAM(drm_test_fb_swab, convert_xrgb8888_gen_params),
>>       KUNIT_CASE_PARAM(drm_test_fb_clip_offset, clip_offset_gen_params),
>>       KUNIT_CASE_PARAM(drm_test_fb_build_fourcc_list, fb_build_fourcc_list_gen_params),
>> +    KUNIT_CASE_PARAM(drm_test_fb_memcpy, multi_plane_op_gen_params),
>>       {}
>>   };
>>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
index 6ecd92898e8e..3db4b95f3a98 100644
--- a/drivers/gpu/drm/tests/drm_format_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
@@ -1189,6 +1189,396 @@  static void drm_test_fb_build_fourcc_list(struct kunit *test)
 	KUNIT_EXPECT_MEMEQ(test, fourccs_out, params->expected, TEST_BUF_SIZE);
 }
 
+struct fb_memcpy_result {
+	unsigned int dst_pitches[DRM_FORMAT_MAX_PLANES];
+	const u32 expected[DRM_FORMAT_MAX_PLANES][TEST_BUF_SIZE];
+};
+
+struct multi_plane_op_case {
+	const char *name;
+	u32 format;
+	struct drm_rect clip;
+	unsigned int src_pitches[DRM_FORMAT_MAX_PLANES];
+	const u32 src[DRM_FORMAT_MAX_PLANES][TEST_BUF_SIZE];
+	struct fb_memcpy_result memcpy_result;
+};
+
+/* The `src` and `expected` buffers are u32 arrays. To deal with planes that
+ * have a cpp != 4 the values are stored together on the same u32 number in a
+ * way so the order in memory is correct in a little-endian machine.
+ *
+ * Because of that, on some occasions, parts of a u32 will not be part of the
+ * test, to make this explicit the 0xFF byte is used on those parts.
+ */
+
+static struct multi_plane_op_case multi_plane_op_cases[] = {
+	{
+		.name = "single_pixel_source_buffer",
+		.format = DRM_FORMAT_XRGB8888,
+		.clip = DRM_RECT_INIT(0, 0, 1, 1),
+		.src_pitches = { 1 * 4 },
+		.src = {{ 0x01020304 }},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {{ 0x01020304 }},
+		}
+	},
+	{
+		.name = "single_pixel_source_buffer",
+		.format = DRM_FORMAT_XRGB8888_A8,
+		.clip = DRM_RECT_INIT(0, 0, 1, 1),
+		.src_pitches = { 1 * 4, 1 },
+		.src = {
+			{ 0x01020304 },
+			{ 0xFFFFFF01 },
+		},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {
+				{ 0x01020304 },
+				{ 0x00000001 },
+			},
+		},
+	},
+	{
+		.name = "single_pixel_source_buffer",
+		.format = DRM_FORMAT_YUV444,
+		.clip = DRM_RECT_INIT(0, 0, 1, 1),
+		.src_pitches = { 1, 1, 1 },
+		.src = {
+			{ 0xFFFFFF01 },
+			{ 0xFFFFFF01 },
+			{ 0xFFFFFF01 },
+		},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {
+				{ 0x00000001 },
+				{ 0x00000001 },
+				{ 0x00000001 },
+			},
+		},
+	},
+	{
+		.name = "single_pixel_clip_rectangle",
+		.format = DRM_FORMAT_XBGR8888,
+		.clip = DRM_RECT_INIT(1, 1, 1, 1),
+		.src_pitches = { 2 * 4 },
+		.src = {
+			{
+				0x00000000, 0x00000000,
+				0x00000000, 0x01020304,
+			},
+		},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {
+				{ 0x01020304 },
+			},
+		},
+	},
+	{
+		.name = "single_pixel_clip_rectangle",
+		.format = DRM_FORMAT_XRGB8888_A8,
+		.clip = DRM_RECT_INIT(1, 1, 1, 1),
+		.src_pitches = { 2 * 4, 2 * 1 },
+		.src = {
+			{
+				0x00000000, 0x00000000,
+				0x00000000, 0x01020304,
+			},
+			{ 0x01000000 },
+		},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {
+				{ 0x01020304 },
+				{ 0x00000001 },
+			},
+		},
+	},
+	{
+		.name = "single_pixel_clip_rectangle",
+		.format = DRM_FORMAT_YUV444,
+		.clip = DRM_RECT_INIT(1, 1, 1, 1),
+		.src_pitches = { 2 * 1, 2 * 1, 2 * 1 },
+		.src = {
+			{ 0x01000000 },
+			{ 0x01000000 },
+			{ 0x01000000 },
+		},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {
+				{ 0x00000001 },
+				{ 0x00000001 },
+				{ 0x00000001 },
+			},
+		},
+	},
+	{
+		.name = "well_known_colors",
+		.format = DRM_FORMAT_XBGR8888,
+		.clip = DRM_RECT_INIT(1, 1, 2, 4),
+		.src_pitches = { 4 * 4 },
+		.src = {
+			{
+				0x00000000, 0x00000000, 0x00000000, 0x00000000,
+				0x00000000, 0x11FFFFFF, 0x22000000, 0x00000000,
+				0x00000000, 0x33FF0000, 0x4400FF00, 0x00000000,
+				0x00000000, 0x550000FF, 0x66FF00FF, 0x00000000,
+				0x00000000, 0x77FFFF00, 0x8800FFFF, 0x00000000,
+			},
+		},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {
+				{
+					0x11FFFFFF, 0x22000000,
+					0x33FF0000, 0x4400FF00,
+					0x550000FF, 0x66FF00FF,
+					0x77FFFF00, 0x8800FFFF,
+				},
+			},
+		},
+	},
+	{
+		.name = "well_known_colors",
+		.format = DRM_FORMAT_XRGB8888_A8,
+		.clip = DRM_RECT_INIT(1, 1, 2, 4),
+		.src_pitches = { 4 * 4, 4 * 1 },
+		.src = {
+			{
+				0x00000000, 0x00000000, 0x00000000, 0x00000000,
+				0x00000000, 0xFFFFFFFF, 0xFF000000, 0x00000000,
+				0x00000000, 0xFFFF0000, 0xFF00FF00, 0x00000000,
+				0x00000000, 0xFF0000FF, 0xFFFF00FF, 0x00000000,
+				0x00000000, 0xFFFFFF00, 0xFF00FFFF, 0x00000000,
+			},
+			{
+				0x00000000,
+				0x00221100,
+				0x00443300,
+				0x00665500,
+				0x00887700,
+			},
+		},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {
+				{
+					0xFFFFFFFF, 0xFF000000,
+					0xFFFF0000, 0xFF00FF00,
+					0xFF0000FF, 0xFFFF00FF,
+					0xFFFFFF00, 0xFF00FFFF,
+				},
+				{
+					0x44332211,
+					0x88776655,
+				},
+			},
+		},
+	},
+	{
+		.name = "well_known_colors",
+		.format = DRM_FORMAT_YUV444,
+		.clip = DRM_RECT_INIT(1, 1, 2, 4),
+		.src_pitches = { 4 * 1, 4 * 1, 4 * 1 },
+		.src = {
+			{
+				0x00000000,
+				0x0000FF00,
+				0x00954C00,
+				0x00691D00,
+				0x00B2E100,
+			},
+			{
+				0x00000000,
+				0x00000000,
+				0x00BEDE00,
+				0x00436500,
+				0x00229B00,
+			},
+			{
+				0x00000000,
+				0x00000000,
+				0x007E9C00,
+				0x0083E700,
+				0x00641A00,
+			},
+		},
+		.memcpy_result = {
+			.dst_pitches = { TEST_USE_DEFAULT_PITCH },
+			.expected = {
+				{
+					0x954C00FF,
+					0xB2E1691D,
+				},
+				{
+					0xBEDE0000,
+					0x229B4365,
+				},
+				{
+					0x7E9C0000,
+					0x641A83E7,
+				},
+			},
+		},
+	},
+	{
+		.name = "destination_pitch",
+		.format = DRM_FORMAT_XBGR8888,
+		.clip = DRM_RECT_INIT(0, 0, 3, 3),
+		.src_pitches = { 3 * 4 },
+		.src = {
+			{
+				0xA10E449C, 0xB1114D05, 0xC1A8F303,
+				0xD16CF073, 0xA20E449C, 0xB2114D05,
+				0xC2A80303, 0xD26CF073, 0xA30E449C,
+			},
+		},
+		.memcpy_result = {
+			.dst_pitches = { 5 * 4 },
+			.expected = {
+				{
+					0xA10E449C, 0xB1114D05, 0xC1A8F303, 0x00000000, 0x00000000,
+					0xD16CF073, 0xA20E449C, 0xB2114D05, 0x00000000, 0x00000000,
+					0xC2A80303, 0xD26CF073, 0xA30E449C, 0x00000000, 0x00000000,
+				},
+			},
+		},
+	},
+	{
+		.name = "destination_pitch",
+		.format = DRM_FORMAT_XRGB8888_A8,
+		.clip = DRM_RECT_INIT(0, 0, 3, 3),
+		.src_pitches = { 3 * 4, 3 * 1 },
+		.src = {
+			{
+				0xFF0E449C, 0xFF114D05, 0xFFA8F303,
+				0xFF6CF073, 0xFF0E449C, 0xFF114D05,
+				0xFFA80303, 0xFF6CF073, 0xFF0E449C,
+			},
+			{
+				0xB2C1B1A1,
+				0xD2A3D1A2,
+				0xFFFFFFC2,
+			},
+		},
+		.memcpy_result = {
+			.dst_pitches = { 5 * 4, 5 * 1 },
+			.expected = {
+				{
+					0xFF0E449C, 0xFF114D05, 0xFFA8F303, 0x00000000, 0x00000000,
+					0xFF6CF073, 0xFF0E449C, 0xFF114D05, 0x00000000, 0x00000000,
+					0xFFA80303, 0xFF6CF073, 0xFF0E449C, 0x00000000, 0x00000000,
+				},
+				{
+					0x00C1B1A1,
+					0xD1A2B200,
+					0xD2A30000,
+					0xFF0000C2,
+				},
+			},
+		},
+	},
+	{
+		.name = "destination_pitch",
+		.format = DRM_FORMAT_YUV444,
+		.clip = DRM_RECT_INIT(0, 0, 3, 3),
+		.src_pitches = { 3 * 1, 3 * 1, 3 * 1 },
+		.src = {
+			{
+				0xBAC1323D,
+				0xBA34323D,
+				0xFFFFFF3D,
+			},
+			{
+				0xE1ABEC2A,
+				0xE1EAEC2A,
+				0xFFFFFF2A,
+			},
+			{
+				0xBCEBE4D7,
+				0xBC65E4D7,
+				0xFFFFFFD7,
+			},
+		},
+		.memcpy_result = {
+			.dst_pitches = { 5 * 1, 5 * 1, 5 * 1 },
+			.expected = {
+				{
+					0x00C1323D,
+					0x323DBA00,
+					0xBA340000,
+					0xFF00003D,
+				},
+				{
+					0x00ABEC2A,
+					0xEC2AE100,
+					0xE1EA0000,
+					0xFF00002A,
+				},
+				{
+					0x00EBE4D7,
+					0xE4D7BC00,
+					0xBC650000,
+					0xFF0000D7,
+				},
+			},
+		},
+	},
+};
+
+static void multi_plane_op_case_desc(struct multi_plane_op_case *t, char *desc)
+{
+	snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s: %p4cc", t->name, &t->format);
+}
+
+KUNIT_ARRAY_PARAM(multi_plane_op, multi_plane_op_cases, multi_plane_op_case_desc);
+
+static void drm_test_fb_memcpy(struct kunit *test)
+{
+	const struct multi_plane_op_case *params = test->param_value;
+	const struct fb_memcpy_result *result = &params->memcpy_result;
+	size_t dst_size[DRM_FORMAT_MAX_PLANES] = { 0 };
+	u32 *buf[DRM_FORMAT_MAX_PLANES] = { 0 };
+	u32 *src_cp[DRM_FORMAT_MAX_PLANES] = { 0 };
+	u32 *expected[DRM_FORMAT_MAX_PLANES] = { 0 };
+	struct iosys_map dst[DRM_FORMAT_MAX_PLANES];
+	struct iosys_map src[DRM_FORMAT_MAX_PLANES];
+
+	struct drm_framebuffer fb = {
+		.format = drm_format_info(params->format),
+	};
+
+	memcpy(fb.pitches, params->src_pitches, DRM_FORMAT_MAX_PLANES * sizeof(int));
+
+	for (size_t i = 0; i < fb.format->num_planes; i++) {
+		dst_size[i] = conversion_buf_size(params->format, result->dst_pitches[i],
+						  &params->clip, i);
+		KUNIT_ASSERT_GT(test, dst_size[i], 0);
+
+		buf[i] = kunit_kzalloc(test, dst_size[i], GFP_KERNEL);
+		KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf[i]);
+		iosys_map_set_vaddr(&dst[i], buf[i]);
+
+		src_cp[i] = cpubuf_to_le32(test, params->src[i], TEST_BUF_SIZE);
+		iosys_map_set_vaddr(&src[i], src_cp[i]);
+	}
+
+	if (result->dst_pitches[0] == TEST_USE_DEFAULT_PITCH)
+		drm_fb_memcpy(dst, NULL, src, &fb, &params->clip);
+	else
+		drm_fb_memcpy(dst, result->dst_pitches, src, &fb, &params->clip);
+
+	for (size_t i = 0; i < fb.format->num_planes; i++) {
+		expected[i] = cpubuf_to_le32(test, result->expected[i], TEST_BUF_SIZE);
+		KUNIT_EXPECT_MEMEQ_MSG(test, buf[i], expected[i], dst_size[i],
+				       "Failed expectation on plane %zu", i);
+	}
+}
+
 static struct kunit_case drm_format_helper_test_cases[] = {
 	KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_gray8, convert_xrgb8888_gen_params),
 	KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb332, convert_xrgb8888_gen_params),
@@ -1204,6 +1594,7 @@  static struct kunit_case drm_format_helper_test_cases[] = {
 	KUNIT_CASE_PARAM(drm_test_fb_swab, convert_xrgb8888_gen_params),
 	KUNIT_CASE_PARAM(drm_test_fb_clip_offset, clip_offset_gen_params),
 	KUNIT_CASE_PARAM(drm_test_fb_build_fourcc_list, fb_build_fourcc_list_gen_params),
+	KUNIT_CASE_PARAM(drm_test_fb_memcpy, multi_plane_op_gen_params),
 	{}
 };