block: Fix iterating over an empty bio with bio_for_each_folio_all
[platform/kernel/linux-starfive.git] / include / drm / drm_kunit_helpers.h
1 // SPDX-License-Identifier: GPL-2.0
2
3 #ifndef DRM_KUNIT_HELPERS_H_
4 #define DRM_KUNIT_HELPERS_H_
5
6 #include <linux/device.h>
7
8 #include <kunit/test.h>
9
10 struct drm_device;
11 struct kunit;
12
13 struct device *drm_kunit_helper_alloc_device(struct kunit *test);
14 void drm_kunit_helper_free_device(struct kunit *test, struct device *dev);
15
16 struct drm_device *
17 __drm_kunit_helper_alloc_drm_device_with_driver(struct kunit *test,
18                                                 struct device *dev,
19                                                 size_t size, size_t offset,
20                                                 const struct drm_driver *driver);
21
22 /**
23  * drm_kunit_helper_alloc_drm_device_with_driver - Allocates a mock DRM device for KUnit tests
24  * @_test: The test context object
25  * @_dev: The parent device object
26  * @_type: the type of the struct which contains struct &drm_device
27  * @_member: the name of the &drm_device within @_type.
28  * @_drv: Mocked DRM device driver features
29  *
30  * This function creates a struct &drm_device from @_dev and @_drv.
31  *
32  * @_dev should be allocated using drm_kunit_helper_alloc_device().
33  *
34  * The driver is tied to the @_test context and will get cleaned at the
35  * end of the test. The drm_device is allocated through
36  * devm_drm_dev_alloc() and will thus be freed through a device-managed
37  * resource.
38  *
39  * Returns:
40  * A pointer to the new drm_device, or an ERR_PTR() otherwise.
41  */
42 #define drm_kunit_helper_alloc_drm_device_with_driver(_test, _dev, _type, _member, _drv)        \
43         ((_type *)__drm_kunit_helper_alloc_drm_device_with_driver(_test, _dev,                  \
44                                                        sizeof(_type),                           \
45                                                        offsetof(_type, _member),                \
46                                                        _drv))
47
48 static inline struct drm_device *
49 __drm_kunit_helper_alloc_drm_device(struct kunit *test,
50                                     struct device *dev,
51                                     size_t size, size_t offset,
52                                     u32 features)
53 {
54         struct drm_driver *driver;
55
56         driver = devm_kzalloc(dev, sizeof(*driver), GFP_KERNEL);
57         KUNIT_ASSERT_NOT_NULL(test, driver);
58
59         driver->driver_features = features;
60
61         return __drm_kunit_helper_alloc_drm_device_with_driver(test, dev,
62                                                                size, offset,
63                                                                driver);
64 }
65
66 /**
67  * drm_kunit_helper_alloc_drm_device - Allocates a mock DRM device for KUnit tests
68  * @_test: The test context object
69  * @_dev: The parent device object
70  * @_type: the type of the struct which contains struct &drm_device
71  * @_member: the name of the &drm_device within @_type.
72  * @_features: Mocked DRM device driver features
73  *
74  * This function creates a struct &drm_driver and will create a struct
75  * &drm_device from @_dev and that driver.
76  *
77  * @_dev should be allocated using drm_kunit_helper_alloc_device().
78  *
79  * The driver is tied to the @_test context and will get cleaned at the
80  * end of the test. The drm_device is allocated through
81  * devm_drm_dev_alloc() and will thus be freed through a device-managed
82  * resource.
83  *
84  * Returns:
85  * A pointer to the new drm_device, or an ERR_PTR() otherwise.
86  */
87 #define drm_kunit_helper_alloc_drm_device(_test, _dev, _type, _member, _feat)   \
88         ((_type *)__drm_kunit_helper_alloc_drm_device(_test, _dev,              \
89                                                       sizeof(_type),            \
90                                                       offsetof(_type, _member), \
91                                                       _feat))
92 struct drm_modeset_acquire_ctx *
93 drm_kunit_helper_acquire_ctx_alloc(struct kunit *test);
94
95 struct drm_atomic_state *
96 drm_kunit_helper_atomic_state_alloc(struct kunit *test,
97                                     struct drm_device *drm,
98                                     struct drm_modeset_acquire_ctx *ctx);
99
100 #endif // DRM_KUNIT_HELPERS_H_