drm: selftest: convert drm_framebuffer selftest to KUnit

Considering the current adoption of the KUnit framework, convert the
DRM framebuffer selftest to the KUnit API.
Tested-by: David Gow <davidgow@google.com>
Acked-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Maíra Canal <maira.canal@usp.br>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220708203052.236290-8-maira.canal@usp.br

drivers/gpu/drm/selftests/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-test-drm_modeset-y := test-drm_modeset_common.o test-drm_framebuffer.o
-
-obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o \
-				    test-drm_buddy.o
+obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_buddy.o

drivers/gpu/drm/selftests/drm_modeset_selftests.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/* List each unit test as selftest(name, function)
- *
- * The name is used as both an enum and expanded as igt__name to create
- * a module parameter. It must be unique and legal for a C identifier.
- *
- * Tests are executed in order by igt/drm_selftests_helper
- */
-selftest(check_drm_framebuffer_create, igt_check_drm_framebuffer_create)

drivers/gpu/drm/selftests/test-drm_modeset_common.c

-// SPDX-License-Identifier: GPL-2.0
-/*
- * Common file for modeset selftests.
- */
-
-#include <linux/module.h>
-
-#include "test-drm_modeset_common.h"
-
-#define TESTS "drm_modeset_selftests.h"
-#include "drm_selftest.h"
-
-#include "drm_selftest.c"
-
-static int __init test_drm_modeset_init(void)
-{
-	int err;
-
-	err = run_selftests(selftests, ARRAY_SIZE(selftests), NULL);
-
-	return err > 0 ? 0 : err;
-}
-
-static void __exit test_drm_modeset_exit(void)
-{
-}
-
-module_init(test_drm_modeset_init);
-module_exit(test_drm_modeset_exit);
-
-MODULE_AUTHOR("Intel Corporation");
-MODULE_LICENSE("GPL");

drivers/gpu/drm/selftests/test-drm_modeset_common.h

-/* SPDX-License-Identifier: GPL-2.0 */
-
-#ifndef __TEST_DRM_MODESET_COMMON_H__
-#define __TEST_DRM_MODESET_COMMON_H__
-
-#include <linux/errno.h>
-#include <linux/printk.h>
-
-#define FAIL(test, msg, ...) \
-	do { \
-		if (test) { \
-			pr_err("%s/%u: " msg, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
-			return -EINVAL; \
-		} \
-	} while (0)
-
-#define FAIL_ON(x) FAIL((x), "%s", "FAIL_ON(" __stringify(x) ")\n")
-
-int igt_check_drm_framebuffer_create(void *ignored);
-
-#endif

drivers/gpu/drm/tests/Makefile

@@ -2,4 +2,4 @@
 
 obj-$(CONFIG_DRM_KUNIT_TEST) += drm_format_helper_test.o drm_damage_helper_test.o \
 	drm_cmdline_parser_test.o drm_rect_test.o drm_format_test.o drm_plane_helper_test.o \
-	drm_dp_mst_helper_test.o
+	drm_dp_mst_helper_test.o drm_framebuffer_test.o

drivers/gpu/drm/selftests/test-drm_framebuffer.c → drivers/gpu/drm/tests/drm_framebuffer_test.c

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Test cases for the drm_framebuffer functions
+ *
+ * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net>
  */
 
-#include <linux/kernel.h>
+#include <kunit/test.h>
 
 #include <drm/drm_device.h>
 #include <drm/drm_mode.h>
@@ -12,8 +14,6 @@
 
 #include "../drm_crtc_internal.h"
 
-#include "test-drm_modeset_common.h"
-
 #define MIN_WIDTH 4
 #define MAX_WIDTH 4096
 #define MIN_HEIGHT 4
@@ -73,12 +73,14 @@ static struct drm_framebuffer_test createbuffer_tests[] = {
 },
 { .buffer_created = 0, .name = "ABGR8888 Out of bound height * pitch combination",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
-		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX - 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
+		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX - 1, 0, 0 },
+		 .pitches = { 4 * MAX_WIDTH, 0, 0 },
 	}
 },
 { .buffer_created = 1, .name = "ABGR8888 Large buffer offset",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
-		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
+		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 },
+		 .pitches = { 4 * MAX_WIDTH, 0, 0 },
 	}
 },
 { .buffer_created = 1, .name = "ABGR8888 Set DRM_MODE_FB_MODIFIERS without modifiers",
@@ -89,11 +91,13 @@ static struct drm_framebuffer_test createbuffer_tests[] = {
 },
 { .buffer_created = 1, .name = "ABGR8888 Valid buffer modifier",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
-		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
-		 .flags = DRM_MODE_FB_MODIFIERS, .modifier = { AFBC_FORMAT_MOD_YTR, 0, 0 },
+		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 },
+		 .pitches = { 4 * MAX_WIDTH, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS,
+		 .modifier = { AFBC_FORMAT_MOD_YTR, 0, 0 },
 	}
 },
-{ .buffer_created = 0, .name = "ABGR8888 Invalid buffer modifier(DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)",
+{ .buffer_created = 0,
+	.name = "ABGR8888 Invalid buffer modifier(DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
 		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 },
 		 .pitches = { 4 * MAX_WIDTH, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS,
@@ -143,7 +147,8 @@ static struct drm_framebuffer_test createbuffer_tests[] = {
 { .buffer_created = 1, .name = "NV12 with DRM_FORMAT_MOD_SAMSUNG_64_32_TILE",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12,
 		 .handles = { 1, 1, 0 }, .flags = DRM_MODE_FB_MODIFIERS,
-		 .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0 },
+		 .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE,
+			 DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0 },
 		 .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
 	}
 },
@@ -164,7 +169,8 @@ static struct drm_framebuffer_test createbuffer_tests[] = {
 },
 { .buffer_created = 0, .name = "NV12 Handle for inexistent plane",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12,
-		 .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS, .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
+		 .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS,
+		 .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
 	}
 },
 { .buffer_created = 1, .name = "NV12 Handle for inexistent plane without DRM_MODE_FB_MODIFIERS",
@@ -203,24 +209,29 @@ static struct drm_framebuffer_test createbuffer_tests[] = {
 },
 { .buffer_created = 1, .name = "YVU420 Different buffer offsets/pitches",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
-		 .handles = { 1, 1, 1 }, .offsets = { MAX_WIDTH, MAX_WIDTH  + MAX_WIDTH * MAX_HEIGHT,
-						      MAX_WIDTH  + 2 * MAX_WIDTH * MAX_HEIGHT },
-		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2) + 1, DIV_ROUND_UP(MAX_WIDTH, 2) + 7 },
+		 .handles = { 1, 1, 1 }, .offsets = { MAX_WIDTH, MAX_WIDTH  +
+			 MAX_WIDTH * MAX_HEIGHT, MAX_WIDTH  + 2 * MAX_WIDTH * MAX_HEIGHT },
+		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2) + 1,
+			 DIV_ROUND_UP(MAX_WIDTH, 2) + 7 },
 	}
 },
-{ .buffer_created = 0, .name = "YVU420 Modifier set just for plane 0, without DRM_MODE_FB_MODIFIERS",
+{ .buffer_created = 0,
+	.name = "YVU420 Modifier set just for plane 0, without DRM_MODE_FB_MODIFIERS",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
 		 .handles = { 1, 1, 1 }, .modifier = { AFBC_FORMAT_MOD_SPARSE, 0, 0 },
 		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
 	}
 },
-{ .buffer_created = 0, .name = "YVU420 Modifier set just for planes 0, 1, without DRM_MODE_FB_MODIFIERS",
+{ .buffer_created = 0,
+	.name = "YVU420 Modifier set just for planes 0, 1, without DRM_MODE_FB_MODIFIERS",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
-		 .handles = { 1, 1, 1 }, .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, 0 },
+		 .handles = { 1, 1, 1 },
+		 .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, 0 },
 		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
 	}
 },
-{ .buffer_created = 0, .name = "YVU420 Modifier set just for plane 0, 1, with DRM_MODE_FB_MODIFIERS",
+{ .buffer_created = 0,
+	.name = "YVU420 Modifier set just for plane 0, 1, with DRM_MODE_FB_MODIFIERS",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
 		 .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS,
 		 .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, 0 },
@@ -230,7 +241,8 @@ static struct drm_framebuffer_test createbuffer_tests[] = {
 { .buffer_created = 1, .name = "YVU420 Valid modifier",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
 		 .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS,
-		 .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE },
+		 .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE,
+			 AFBC_FORMAT_MOD_SPARSE },
 		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
 	}
 },
@@ -245,8 +257,8 @@ static struct drm_framebuffer_test createbuffer_tests[] = {
 { .buffer_created = 0, .name = "YVU420 Modifier for inexistent plane",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
 		 .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS,
-		 .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE,
-			       AFBC_FORMAT_MOD_SPARSE },
+		 .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE,
+			 AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE },
 		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
 	}
 },
@@ -276,7 +288,8 @@ static struct drm_framebuffer_test createbuffer_tests[] = {
 		 .pitches = { 2 * MAX_WIDTH + 1, 0, 0 }
 	}
 },
-{ .buffer_created = 1, .name = "X0L2 Offset for inexistent plane, without DRM_MODE_FB_MODIFIERS set",
+{ .buffer_created = 1,
+	.name = "X0L2 Offset for inexistent plane, without DRM_MODE_FB_MODIFIERS set",
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2,
 		 .handles = { 1, 0, 0 }, .offsets = { 0, 0, 3 },
 		 .pitches = { 2 * MAX_WIDTH + 1, 0, 0 }
@@ -336,15 +349,27 @@ static int execute_drm_mode_fb_cmd2(struct drm_mode_fb_cmd2 *r)
 	return buffer_created;
 }
 
-int igt_check_drm_framebuffer_create(void *ignored)
+static void igt_check_drm_framebuffer_create(struct kunit *test)
 {
 	int i = 0;
 
 	for (i = 0; i < ARRAY_SIZE(createbuffer_tests); i++) {
-		FAIL(createbuffer_tests[i].buffer_created !=
-				execute_drm_mode_fb_cmd2(&createbuffer_tests[i].cmd),
+		KUNIT_EXPECT_EQ_MSG(test, createbuffer_tests[i].buffer_created,
+				    execute_drm_mode_fb_cmd2(&createbuffer_tests[i].cmd),
 		     "Test %d: \"%s\" failed\n", i, createbuffer_tests[i].name);
 	}
-
-	return 0;
 }
+
+static struct kunit_case drm_framebuffer_tests[] = {
+	KUNIT_CASE(igt_check_drm_framebuffer_create),
+	{ }
+};
+
+static struct kunit_suite drm_framebuffer_test_suite = {
+	.name = "drm_framebuffer",
+	.test_cases = drm_framebuffer_tests,
+};
+
+kunit_test_suite(drm_framebuffer_test_suite);
+
+MODULE_LICENSE("GPL");