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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#include <kunit/device.h>#include <kunit/test.h>
#include <drm/drm_device.h>#include <drm/drm_drv.h>#include <drm/drm_mode.h>#include <drm/drm_framebuffer.h>#include <drm/drm_fourcc.h>#include <drm/drm_kunit_helpers.h>#include <drm/drm_print.h>
#include "../drm_crtc_internal.h"
#define MIN_WIDTH 4#define MAX_WIDTH 4096#define MIN_HEIGHT 4#define MAX_HEIGHT 4096
#define DRM_MODE_FB_INVALID BIT(2)
struct drm_framebuffer_test { int buffer_created; struct drm_mode_fb_cmd2 cmd; const char *name;};
static const struct drm_framebuffer_test drm_framebuffer_create_cases[] = {{ .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 }, }},
/* * All entries in members that represents per-plane values (@modifier, @handles, * @pitches and @offsets) must be zero when unused. */{ .buffer_created = 0, .name = "ABGR8888 Buffer offset for inexistent plane", .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, UINT_MAX / 2, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS, }},
{ .buffer_created = 0, .name = "ABGR8888 Invalid flag", .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_INVALID, }},{ .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 DRM_MODE_FB_MODIFIERS set without modifier", .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 Normal sizes", .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 = 0, .name = "YUV420_10BIT Invalid modifier(DRM_FORMAT_MOD_LINEAR)", .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YUV420_10BIT, .handles = { 1, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS, .modifier = { DRM_FORMAT_MOD_LINEAR, 0, 0 }, .pitches = { MAX_WIDTH, 0, 0 }, }},{ .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, }},};
/* * This struct is intended to provide a way to mocked functions communicate * with the outer test when it can't be achieved by using its return value. In * this way, the functions that receive the mocked drm_device, for example, can * grab a reference to this and actually return something to be used on some * expectation. */struct drm_framebuffer_test_priv { struct drm_device dev; bool buffer_created; bool buffer_freed;};
static struct drm_framebuffer *fb_create_mock(struct drm_device *dev, struct drm_file *file_priv, const struct drm_format_info *info, const struct drm_mode_fb_cmd2 *mode_cmd){ struct drm_framebuffer_test_priv *priv = container_of(dev, typeof(*priv), dev);
priv->buffer_created = true; return ERR_PTR(-EINVAL);}
static struct drm_mode_config_funcs mock_config_funcs = { .fb_create = fb_create_mock,};
static int drm_framebuffer_test_init(struct kunit *test){ struct device *parent; struct drm_framebuffer_test_priv *priv; struct drm_device *dev;
parent = drm_kunit_helper_alloc_device(test); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
priv = drm_kunit_helper_alloc_drm_device(test, parent, typeof(*priv), dev, 0); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv); dev = &priv->dev;
dev->mode_config.min_width = MIN_WIDTH; dev->mode_config.max_width = MAX_WIDTH; dev->mode_config.min_height = MIN_HEIGHT; dev->mode_config.max_height = MAX_HEIGHT; dev->mode_config.funcs = &mock_config_funcs;
test->priv = priv; return 0;}
static void drm_test_framebuffer_create(struct kunit *test){ const struct drm_framebuffer_test *params = test->param_value; struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *dev = &priv->dev;
priv->buffer_created = false; drm_internal_framebuffer_create(dev, ¶ms->cmd, NULL); KUNIT_EXPECT_EQ(test, params->buffer_created, priv->buffer_created);}
static void drm_framebuffer_test_to_desc(const struct drm_framebuffer_test *t, char *desc){ strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE);}
KUNIT_ARRAY_PARAM(drm_framebuffer_create, drm_framebuffer_create_cases, drm_framebuffer_test_to_desc);
/* Tries to create a framebuffer with modifiers without drm_device supporting it */static void drm_test_framebuffer_modifiers_not_supported(struct kunit *test){ struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *dev = &priv->dev; struct drm_framebuffer *fb;
/* A valid cmd with modifier */ struct drm_mode_fb_cmd2 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, };
priv->buffer_created = false; dev->mode_config.fb_modifiers_not_supported = 1;
fb = drm_internal_framebuffer_create(dev, &cmd, NULL); KUNIT_EXPECT_EQ(test, priv->buffer_created, false); KUNIT_EXPECT_EQ(test, PTR_ERR(fb), -EINVAL);}
/* Parameters for testing drm_framebuffer_check_src_coords function */struct drm_framebuffer_check_src_coords_case { const char *name; const int expect; const unsigned int fb_size; const uint32_t src_x; const uint32_t src_y;
/* Deltas to be applied on source */ const uint32_t dsrc_w; const uint32_t dsrc_h;};
static const struct drm_framebuffer_check_src_coords_casedrm_framebuffer_check_src_coords_cases[] = { { .name = "Success: source fits into fb", .expect = 0, }, { .name = "Fail: overflowing fb with x-axis coordinate", .expect = -ENOSPC, .src_x = 1, .fb_size = UINT_MAX, }, { .name = "Fail: overflowing fb with y-axis coordinate", .expect = -ENOSPC, .src_y = 1, .fb_size = UINT_MAX, }, { .name = "Fail: overflowing fb with source width", .expect = -ENOSPC, .dsrc_w = 1, .fb_size = UINT_MAX - 1, }, { .name = "Fail: overflowing fb with source height", .expect = -ENOSPC, .dsrc_h = 1, .fb_size = UINT_MAX - 1, },};
static void drm_test_framebuffer_check_src_coords(struct kunit *test){ const struct drm_framebuffer_check_src_coords_case *params = test->param_value; const uint32_t src_x = params->src_x; const uint32_t src_y = params->src_y; const uint32_t src_w = (params->fb_size << 16) + params->dsrc_w; const uint32_t src_h = (params->fb_size << 16) + params->dsrc_h; const struct drm_framebuffer fb = { .width = params->fb_size, .height = params->fb_size }; int ret;
ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, &fb); KUNIT_EXPECT_EQ(test, ret, params->expect);}
static voidcheck_src_coords_test_to_desc(const struct drm_framebuffer_check_src_coords_case *t, char *desc){ strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE);}
KUNIT_ARRAY_PARAM(check_src_coords, drm_framebuffer_check_src_coords_cases, check_src_coords_test_to_desc);
/* * Test if drm_framebuffer_cleanup() really pops out the framebuffer object * from device's fb_list and decrement the number of framebuffers for that * device, which is the only things it does. */static void drm_test_framebuffer_cleanup(struct kunit *test){ struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *dev = &priv->dev; struct list_head *fb_list = &dev->mode_config.fb_list; struct drm_format_info format = { }; struct drm_framebuffer fb1 = { .dev = dev, .format = &format }; struct drm_framebuffer fb2 = { .dev = dev, .format = &format };
/* This will result on [fb_list] -> fb2 -> fb1 */ drm_framebuffer_init(dev, &fb1, NULL); drm_framebuffer_init(dev, &fb2, NULL);
drm_framebuffer_cleanup(&fb1);
/* Now fb2 is the only one element on fb_list */ KUNIT_ASSERT_TRUE(test, list_is_singular(&fb2.head)); KUNIT_ASSERT_EQ(test, dev->mode_config.num_fb, 1);
drm_framebuffer_cleanup(&fb2);
/* Now fb_list is empty */ KUNIT_ASSERT_TRUE(test, list_empty(fb_list)); KUNIT_ASSERT_EQ(test, dev->mode_config.num_fb, 0);}
/* * Initialize a framebuffer, lookup its id and test if the returned reference * matches. */static void drm_test_framebuffer_lookup(struct kunit *test){ struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *dev = &priv->dev; struct drm_format_info format = { }; struct drm_framebuffer expected_fb = { .dev = dev, .format = &format }; struct drm_framebuffer *returned_fb; uint32_t id = 0; int ret;
ret = drm_framebuffer_init(dev, &expected_fb, NULL); KUNIT_ASSERT_EQ(test, ret, 0); id = expected_fb.base.id;
/* Looking for expected_fb */ returned_fb = drm_framebuffer_lookup(dev, NULL, id); KUNIT_EXPECT_PTR_EQ(test, returned_fb, &expected_fb); drm_framebuffer_put(returned_fb);
drm_framebuffer_cleanup(&expected_fb);}
/* Try to lookup an id that is not linked to a framebuffer */static void drm_test_framebuffer_lookup_inexistent(struct kunit *test){ struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *dev = &priv->dev; struct drm_framebuffer *fb; uint32_t id = 0;
/* Looking for an inexistent framebuffer */ fb = drm_framebuffer_lookup(dev, NULL, id); KUNIT_EXPECT_NULL(test, fb);}
/* * Test if drm_framebuffer_init initializes the framebuffer successfully, * asserting that its modeset object struct and its refcount are correctly * set and that strictly one framebuffer is initialized. */static void drm_test_framebuffer_init(struct kunit *test){ struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *dev = &priv->dev; struct drm_format_info format = { }; struct drm_framebuffer fb1 = { .dev = dev, .format = &format }; struct drm_framebuffer_funcs funcs = { }; int ret;
ret = drm_framebuffer_init(dev, &fb1, &funcs); KUNIT_ASSERT_EQ(test, ret, 0);
/* Check if fb->funcs is actually set to the drm_framebuffer_funcs passed on */ KUNIT_EXPECT_PTR_EQ(test, fb1.funcs, &funcs);
/* The fb->comm must be set to the current running process */ KUNIT_EXPECT_STREQ(test, fb1.comm, current->comm);
/* The fb->base must be successfully initialized */ KUNIT_EXPECT_NE(test, fb1.base.id, 0); KUNIT_EXPECT_EQ(test, fb1.base.type, DRM_MODE_OBJECT_FB); KUNIT_EXPECT_EQ(test, kref_read(&fb1.base.refcount), 1); KUNIT_EXPECT_PTR_EQ(test, fb1.base.free_cb, &drm_framebuffer_free);
/* There must be just that one fb initialized */ KUNIT_EXPECT_EQ(test, dev->mode_config.num_fb, 1); KUNIT_EXPECT_PTR_EQ(test, dev->mode_config.fb_list.prev, &fb1.head); KUNIT_EXPECT_PTR_EQ(test, dev->mode_config.fb_list.next, &fb1.head);
drm_framebuffer_cleanup(&fb1);}
/* Try to init a framebuffer without setting its format */static void drm_test_framebuffer_init_bad_format(struct kunit *test){ struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *dev = &priv->dev; struct drm_framebuffer fb1 = { .dev = dev, .format = NULL }; struct drm_framebuffer_funcs funcs = { }; int ret;
/* Fails if fb.format isn't set */ ret = drm_framebuffer_init(dev, &fb1, &funcs); KUNIT_EXPECT_EQ(test, ret, -EINVAL);}
/* * Test calling drm_framebuffer_init() passing a framebuffer linked to a * different drm_device parent from the one passed on the first argument, which * must fail. */static void drm_test_framebuffer_init_dev_mismatch(struct kunit *test){ struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *right_dev = &priv->dev; struct drm_device *wrong_dev; struct device *wrong_dev_parent; struct drm_format_info format = { }; struct drm_framebuffer fb1 = { .dev = right_dev, .format = &format }; struct drm_framebuffer_funcs funcs = { }; int ret;
wrong_dev_parent = kunit_device_register(test, "drm-kunit-wrong-device-mock"); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, wrong_dev_parent);
wrong_dev = __drm_kunit_helper_alloc_drm_device(test, wrong_dev_parent, sizeof(struct drm_device), 0, 0); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, wrong_dev);
/* Fails if fb->dev doesn't point to the drm_device passed on first arg */ ret = drm_framebuffer_init(wrong_dev, &fb1, &funcs); KUNIT_EXPECT_EQ(test, ret, -EINVAL);}
static void destroy_free_mock(struct drm_framebuffer *fb){ struct drm_framebuffer_test_priv *priv = container_of(fb->dev, typeof(*priv), dev);
priv->buffer_freed = true;}
static struct drm_framebuffer_funcs framebuffer_funcs_free_mock = { .destroy = destroy_free_mock,};
/* * In summary, the drm_framebuffer_free() function must implicitly call * fb->funcs->destroy() and garantee that the framebufer object is unregistered * from the drm_device idr pool. */static void drm_test_framebuffer_free(struct kunit *test){ struct drm_framebuffer_test_priv *priv = test->priv; struct drm_device *dev = &priv->dev; struct drm_mode_object *obj; struct drm_framebuffer fb = { .dev = dev, .funcs = &framebuffer_funcs_free_mock, }; int id, ret;
priv->buffer_freed = false;
/* * Mock a framebuffer that was not unregistered at the moment of the * drm_framebuffer_free() call. */ ret = drm_mode_object_add(dev, &fb.base, DRM_MODE_OBJECT_FB); KUNIT_ASSERT_EQ(test, ret, 0); id = fb.base.id;
drm_framebuffer_free(&fb.base.refcount);
/* The framebuffer object must be unregistered */ obj = drm_mode_object_find(dev, NULL, id, DRM_MODE_OBJECT_FB); KUNIT_EXPECT_PTR_EQ(test, obj, NULL); KUNIT_EXPECT_EQ(test, fb.base.id, 0);
/* Test if fb->funcs->destroy() was called */ KUNIT_EXPECT_EQ(test, priv->buffer_freed, true);}
static struct kunit_case drm_framebuffer_tests[] = { KUNIT_CASE_PARAM(drm_test_framebuffer_check_src_coords, check_src_coords_gen_params), KUNIT_CASE(drm_test_framebuffer_cleanup), KUNIT_CASE_PARAM(drm_test_framebuffer_create, drm_framebuffer_create_gen_params), KUNIT_CASE(drm_test_framebuffer_free), KUNIT_CASE(drm_test_framebuffer_init), KUNIT_CASE(drm_test_framebuffer_init_bad_format), KUNIT_CASE(drm_test_framebuffer_init_dev_mismatch), KUNIT_CASE(drm_test_framebuffer_lookup), KUNIT_CASE(drm_test_framebuffer_lookup_inexistent), KUNIT_CASE(drm_test_framebuffer_modifiers_not_supported), { }};
static struct kunit_suite drm_framebuffer_test_suite = { .name = "drm_framebuffer", .init = drm_framebuffer_test_init, .test_cases = drm_framebuffer_tests,};
kunit_test_suite(drm_framebuffer_test_suite);
MODULE_DESCRIPTION("Test cases for the drm_framebuffer functions");MODULE_LICENSE("GPL");