kernel/drivers/gpu/drm/selftests/test-drm_framebuffer.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Test cases for the drm_framebuffer functions
 */

#include <linux/kernel.h>

#include <drm/drm_device.h>
#include <drm/drm_mode.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_print.h>

#include "../drm_crtc_internal.h"

#include "test-drm_modeset_common.h"

#define MIN_WIDTH 4
#define MAX_WIDTH 4096
#define MIN_HEIGHT 4
#define MAX_HEIGHT 4096

struct drm_framebuffer_test {
	int buffer_created;
	struct drm_mode_fb_cmd2 cmd;
	const char *name;
};

static struct drm_framebuffer_test createbuffer_tests[] = {
{ .buffer_created = 1, .name = "ABGR8888 normal sizes",
	.cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 1, 0, 0 }, .pitches = { 4 * 600, 0, 0 },
	}
},
{ .buffer_created = 1, .name = "ABGR8888 max sizes",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
	}
},
{ .buffer_created = 1, .name = "ABGR8888 pitch greater than min required",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH + 1, 0, 0 },
	}
},
{ .buffer_created = 0, .name = "ABGR8888 pitch less than min required",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH - 1, 0, 0 },
	}
},
{ .buffer_created = 0, .name = "ABGR8888 Invalid width",
	.cmd = { .width = MAX_WIDTH + 1, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 1, 0, 0 }, .pitches = { 4 * (MAX_WIDTH + 1), 0, 0 },
	}
},
{ .buffer_created = 0, .name = "ABGR8888 Invalid buffer handle",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 0, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
	}
},
{ .buffer_created = 0, .name = "No pixel format",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = 0,
		 .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
	}
},
{ .buffer_created = 0, .name = "ABGR8888 Width 0",
	.cmd = { .width = 0, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
	}
},
{ .buffer_created = 0, .name = "ABGR8888 Height 0",
	.cmd = { .width = MAX_WIDTH, .height = 0, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
	}
},
{ .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 },
	}
},
{ .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 },
	}
},
{ .buffer_created = 1, .name = "ABGR8888 Set DRM_MODE_FB_MODIFIERS without modifiers",
	.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,
	}
},
{ .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 },
	}
},
{ .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,
		 .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0, 0 },
	}
},
{ .buffer_created = 1, .name = "ABGR8888 Extra pitches without DRM_MODE_FB_MODIFIERS",
	.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, 4 * MAX_WIDTH, 0 },
	}
},
{ .buffer_created = 0, .name = "ABGR8888 Extra pitches with DRM_MODE_FB_MODIFIERS",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
		 .handles = { 1, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS,
		 .pitches = { 4 * MAX_WIDTH, 4 * MAX_WIDTH, 0 },
	}
},
{ .buffer_created = 1, .name = "NV12 Normal sizes",
	.cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_NV12,
		 .handles = { 1, 1, 0 }, .pitches = { 600, 600, 0 },
	}
},
{ .buffer_created = 1, .name = "NV12 Max sizes",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12,
		 .handles = { 1, 1, 0 }, .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
	}
},
{ .buffer_created = 0, .name = "NV12 Invalid pitch",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12,
		 .handles = { 1, 1, 0 }, .pitches = { MAX_WIDTH, MAX_WIDTH - 1, 0 },
	}
},
{ .buffer_created = 0, .name = "NV12 Invalid modifier/missing DRM_MODE_FB_MODIFIERS flag",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12,
		 .handles = { 1, 1, 0 }, .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0, 0 },
		 .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
	}
},
{ .buffer_created = 0, .name = "NV12 different  modifier per-plane",
	.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, 0, 0 },
		 .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
	}
},
{ .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 },
		 .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
	}
},
{ .buffer_created = 0, .name = "NV12 Valid modifiers without DRM_MODE_FB_MODIFIERS",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12,
		 .handles = { 1, 1, 0 }, .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE,
						       DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0 },
		 .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
	}
},
{ .buffer_created = 0, .name = "NV12 Modifier for inexistent plane",
	.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,
			       DRM_FORMAT_MOD_SAMSUNG_64_32_TILE },
		 .pitches = { MAX_WIDTH, MAX_WIDTH, 0 },
	}
},
{ .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 },
	}
},
{ .buffer_created = 1, .name = "NV12 Handle for inexistent plane without DRM_MODE_FB_MODIFIERS",
	.cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_NV12,
		 .handles = { 1, 1, 1 }, .pitches = { 600, 600, 600 },
	}
},
{ .buffer_created = 1, .name = "YVU420 Normal sizes",
	.cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_YVU420,
		 .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS,
		 .pitches = { 600, 300, 300 },
	}
},
{ .buffer_created = 1, .name = "YVU420 DRM_MODE_FB_MODIFIERS set without modifier",
	.cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_YVU420,
		 .handles = { 1, 1, 1 }, .pitches = { 600, 300, 300 },
	}
},
{ .buffer_created = 1, .name = "YVU420 Max sizes",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
		 .handles = { 1, 1, 1 }, .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2),
						      DIV_ROUND_UP(MAX_WIDTH, 2) },
	}
},
{ .buffer_created = 0, .name = "YVU420 Invalid pitch",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
		 .handles = { 1, 1, 1 }, .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2) - 1,
						      DIV_ROUND_UP(MAX_WIDTH, 2) },
	}
},
{ .buffer_created = 1, .name = "YVU420 Different pitches",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420,
		 .handles = { 1, 1, 1 }, .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2) + 1,
						      DIV_ROUND_UP(MAX_WIDTH, 2) + 7 },
	}
},
{ .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 },
	}
},
{ .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",
	.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 },
		 .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",
	.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 },
		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
	}
},
{ .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 },
		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
	}
},
{ .buffer_created = 0, .name = "YVU420 Different modifiers per 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_YTR,
			       AFBC_FORMAT_MOD_SPARSE },
		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
	}
},
{ .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 },
		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
	}
},
{ .buffer_created = 1, .name = "X0L2 Normal sizes",
	.cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_X0L2,
		 .handles = { 1, 0, 0 }, .pitches = { 1200, 0, 0 }
	}
},
{ .buffer_created = 1, .name = "X0L2 Max sizes",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2,
		 .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH, 0, 0 }
	}
},
{ .buffer_created = 0, .name = "X0L2 Invalid pitch",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2,
		 .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH - 1, 0, 0 }
	}
},
{ .buffer_created = 1, .name = "X0L2 Pitch greater than minimum required",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2,
		 .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH + 1, 0, 0 }
	}
},
{ .buffer_created = 0, .name = "X0L2 Handle for inexistent plane",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2,
		 .handles = { 1, 1, 0 }, .flags = DRM_MODE_FB_MODIFIERS,
		 .pitches = { 2 * MAX_WIDTH + 1, 0, 0 }
	}
},
{ .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 }
	}
},
{ .buffer_created = 0, .name = "X0L2 Modifier without DRM_MODE_FB_MODIFIERS set",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2,
		 .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH + 1, 0, 0 },
		 .modifier = { AFBC_FORMAT_MOD_SPARSE, 0, 0 },
	}
},
{ .buffer_created = 1, .name = "X0L2 Valid modifier",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2,
		 .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH + 1, 0, 0 },
		 .modifier = { AFBC_FORMAT_MOD_SPARSE, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS,
	}
},
{ .buffer_created = 0, .name = "X0L2 Modifier for inexistent plane",
	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT,
		 .pixel_format = DRM_FORMAT_X0L2, .handles = { 1, 0, 0 },
		 .pitches = { 2 * MAX_WIDTH + 1, 0, 0 },
		 .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, 0 },
		 .flags = DRM_MODE_FB_MODIFIERS,
	}
},
};

static struct drm_framebuffer *fb_create_mock(struct drm_device *dev,
					      struct drm_file *file_priv,
					      const struct drm_mode_fb_cmd2 *mode_cmd)
{
	int *buffer_created = dev->dev_private;
	*buffer_created = 1;
	return ERR_PTR(-EINVAL);
}

static struct drm_mode_config_funcs mock_config_funcs = {
	.fb_create = fb_create_mock,
};

static struct drm_device mock_drm_device = {
	.mode_config = {
		.min_width = MIN_WIDTH,
		.max_width = MAX_WIDTH,
		.min_height = MIN_HEIGHT,
		.max_height = MAX_HEIGHT,
		.allow_fb_modifiers = true,
		.funcs = &mock_config_funcs,
	},
};

static int execute_drm_mode_fb_cmd2(struct drm_mode_fb_cmd2 *r)
{
	int buffer_created = 0;

	mock_drm_device.dev_private = &buffer_created;
	drm_internal_framebuffer_create(&mock_drm_device, r, NULL);
	return buffer_created;
}

int igt_check_drm_framebuffer_create(void *ignored)
{
	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),
		     "Test %d: \"%s\" failed\n", i, createbuffer_tests[i].name);
	}

	return 0;
}