From 97eacd052dad4a3afa2d3d0eca0a065429620565 Mon Sep 17 00:00:00 2001 From: Arthur Grillo Date: Mon, 14 Aug 2023 19:12:01 -0300 Subject: drm/tests: Add KUnit tests for drm_fb_swab() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Insert parameterized test for the drm_fb_swab() to ensure correctness and prevent future regressions. Each expected color has it bytes reversed in order, so xrgb would be bgrx. Signed-off-by: Arthur Grillo Reviewed-by: Maíra Canal Signed-off-by: Maíra Canal Link: https://patchwork.freedesktop.org/patch/msgid/20230814-gsoc-drm-format-test-v2-v3-2-bd3e9f9bc2fb@riseup.net --- drivers/gpu/drm/tests/drm_format_helper_test.c | 66 ++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) (limited to 'drivers/gpu/drm/tests') diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c index c35e77e4979b..9278d0bbe291 100644 --- a/drivers/gpu/drm/tests/drm_format_helper_test.c +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c @@ -74,6 +74,11 @@ struct convert_to_mono_result { const u8 expected[TEST_BUF_SIZE]; }; +struct fb_swab_result { + unsigned int dst_pitch; + const u32 expected[TEST_BUF_SIZE]; +}; + struct convert_xrgb8888_case { const char *name; unsigned int pitch; @@ -90,6 +95,7 @@ struct convert_xrgb8888_case { struct convert_to_xrgb2101010_result xrgb2101010_result; struct convert_to_argb2101010_result argb2101010_result; struct convert_to_mono_result mono_result; + struct fb_swab_result swab_result; }; static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { @@ -143,6 +149,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { .dst_pitch = TEST_USE_DEFAULT_PITCH, .expected = { 0b0 }, }, + .swab_result = { + .dst_pitch = TEST_USE_DEFAULT_PITCH, + .expected = { 0x0000FF01 }, + }, }, { .name = "single_pixel_clip_rectangle", @@ -197,6 +207,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { .dst_pitch = TEST_USE_DEFAULT_PITCH, .expected = { 0b0 }, }, + .swab_result = { + .dst_pitch = TEST_USE_DEFAULT_PITCH, + .expected = { 0x0000FF10 }, + }, }, { /* Well known colors: White, black, red, green, blue, magenta, @@ -318,6 +332,15 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { 0b11, }, }, + .swab_result = { + .dst_pitch = TEST_USE_DEFAULT_PITCH, + .expected = { + 0xFFFFFF11, 0x00000022, + 0x0000FF33, 0x00FF0044, + 0xFF000055, 0xFF00FF66, + 0x00FFFF77, 0xFFFF0088, + }, + }, }, { /* Randomly picked colors. Full buffer within the clip area. */ @@ -425,6 +448,14 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { 0b010, 0b000, }, }, + .swab_result = { + .dst_pitch = 20, + .expected = { + 0x9C440EA1, 0x054D11B1, 0x03F3A8C1, 0x00000000, 0x00000000, + 0x73F06CD1, 0x9C440EA2, 0x054D11B2, 0x00000000, 0x00000000, + 0x0303A8C2, 0x73F06CD2, 0x9C440EA3, 0x00000000, 0x00000000, + }, + }, }, }; @@ -886,6 +917,40 @@ static void drm_test_fb_xrgb8888_to_mono(struct kunit *test) KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size); } +static void drm_test_fb_swab(struct kunit *test) +{ + const struct convert_xrgb8888_case *params = test->param_value; + const struct fb_swab_result *result = ¶ms->swab_result; + size_t dst_size; + u32 *buf = NULL; + __le32 *xrgb8888 = NULL; + struct iosys_map dst, src; + + struct drm_framebuffer fb = { + .format = drm_format_info(DRM_FORMAT_XRGB8888), + .pitches = { params->pitch, 0, 0 }, + }; + + dst_size = conversion_buf_size(DRM_FORMAT_XRGB8888, result->dst_pitch, ¶ms->clip); + + KUNIT_ASSERT_GT(test, dst_size, 0); + + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + iosys_map_set_vaddr(&dst, buf); + + xrgb8888 = cpubuf_to_le32(test, params->xrgb8888, TEST_BUF_SIZE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888); + iosys_map_set_vaddr(&src, xrgb8888); + + const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ? + NULL : &result->dst_pitch; + + drm_fb_swab(&dst, dst_pitch, &src, &fb, ¶ms->clip, false); + buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32)); + KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size); +} + 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), @@ -898,6 +963,7 @@ static struct kunit_case drm_format_helper_test_cases[] = { KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_xrgb2101010, convert_xrgb8888_gen_params), KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_argb2101010, convert_xrgb8888_gen_params), KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_mono, convert_xrgb8888_gen_params), + KUNIT_CASE_PARAM(drm_test_fb_swab, convert_xrgb8888_gen_params), {} }; -- cgit v1.2.3