3  * KUnit test suite for GEM objects backed by shmem buffers
14 #include <kunit/test.h>
38  * Test creating a shmem GEM object backed by shmem buffer. The test
43 static void drm_gem_shmem_test_obj_create(struct kunit *test)  in drm_gem_shmem_test_obj_create()  argument
45 	struct drm_device *drm_dev = test->priv;  in drm_gem_shmem_test_obj_create()
49 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);  in drm_gem_shmem_test_obj_create()
50 	KUNIT_EXPECT_EQ(test, shmem->base.size, TEST_SIZE);  in drm_gem_shmem_test_obj_create()
51 	KUNIT_EXPECT_NOT_NULL(test, shmem->base.filp);  in drm_gem_shmem_test_obj_create()
52 	KUNIT_EXPECT_NOT_NULL(test, shmem->base.funcs);  in drm_gem_shmem_test_obj_create()
58  * Test creating a shmem GEM object from a scatter/gather table exported
59  * via a DMA-BUF. The test case succeed if the GEM object is successfully
63 static void drm_gem_shmem_test_obj_create_private(struct kunit *test)  in drm_gem_shmem_test_obj_create_private()  argument
65 	struct drm_device *drm_dev = test->priv;  in drm_gem_shmem_test_obj_create_private()
75 	buf = kunit_kzalloc(test, TEST_SIZE, GFP_KERNEL);  in drm_gem_shmem_test_obj_create_private()
76 	KUNIT_ASSERT_NOT_NULL(test, buf);  in drm_gem_shmem_test_obj_create_private()
79 	KUNIT_ASSERT_NOT_NULL(test, sgt);  in drm_gem_shmem_test_obj_create_private()
81 	ret = kunit_add_action_or_reset(test, kfree_wrapper, sgt);  in drm_gem_shmem_test_obj_create_private()
82 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_obj_create_private()
85 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_obj_create_private()
87 	ret = kunit_add_action_or_reset(test, sg_free_table_wrapper, sgt);  in drm_gem_shmem_test_obj_create_private()
88 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_obj_create_private()
98 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_obj_create_private()
101 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_obj_create_private()
108 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gem_obj);  in drm_gem_shmem_test_obj_create_private()
109 	KUNIT_EXPECT_EQ(test, gem_obj->size, TEST_SIZE);  in drm_gem_shmem_test_obj_create_private()
110 	KUNIT_EXPECT_NULL(test, gem_obj->filp);  in drm_gem_shmem_test_obj_create_private()
111 	KUNIT_EXPECT_NOT_NULL(test, gem_obj->funcs);  in drm_gem_shmem_test_obj_create_private()
114 	kunit_remove_action(test, sg_free_table_wrapper, sgt);  in drm_gem_shmem_test_obj_create_private()
115 	kunit_remove_action(test, kfree_wrapper, sgt);  in drm_gem_shmem_test_obj_create_private()
118 	KUNIT_EXPECT_PTR_EQ(test, shmem->sgt, sgt);  in drm_gem_shmem_test_obj_create_private()
124  * Test pinning backing pages for a shmem GEM object. The test case
128 static void drm_gem_shmem_test_pin_pages(struct kunit *test)  in drm_gem_shmem_test_pin_pages()  argument
130 	struct drm_device *drm_dev = test->priv;  in drm_gem_shmem_test_pin_pages()
135 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);  in drm_gem_shmem_test_pin_pages()
136 	KUNIT_EXPECT_NULL(test, shmem->pages);  in drm_gem_shmem_test_pin_pages()
137 	KUNIT_EXPECT_EQ(test, shmem->pages_use_count, 0);  in drm_gem_shmem_test_pin_pages()
139 	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);  in drm_gem_shmem_test_pin_pages()
140 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_pin_pages()
143 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_pin_pages()
144 	KUNIT_ASSERT_NOT_NULL(test, shmem->pages);  in drm_gem_shmem_test_pin_pages()
145 	KUNIT_EXPECT_EQ(test, shmem->pages_use_count, 1);  in drm_gem_shmem_test_pin_pages()
148 		KUNIT_ASSERT_NOT_NULL(test, shmem->pages[i]);  in drm_gem_shmem_test_pin_pages()
151 	KUNIT_EXPECT_NULL(test, shmem->pages);  in drm_gem_shmem_test_pin_pages()
152 	KUNIT_EXPECT_EQ(test, shmem->pages_use_count, 0);  in drm_gem_shmem_test_pin_pages()
156  * Test creating a virtual mapping for a shmem GEM object. The test
158  * counter for virtual mapping is increased by one. Moreover, the test
159  * case writes and then reads a test pattern over the mapped memory.
161 static void drm_gem_shmem_test_vmap(struct kunit *test)  in drm_gem_shmem_test_vmap()  argument
163 	struct drm_device *drm_dev = test->priv;  in drm_gem_shmem_test_vmap()
169 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);  in drm_gem_shmem_test_vmap()
170 	KUNIT_EXPECT_NULL(test, shmem->vaddr);  in drm_gem_shmem_test_vmap()
171 	KUNIT_EXPECT_EQ(test, shmem->vmap_use_count, 0);  in drm_gem_shmem_test_vmap()
173 	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);  in drm_gem_shmem_test_vmap()
174 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_vmap()
177 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_vmap()
178 	KUNIT_ASSERT_NOT_NULL(test, shmem->vaddr);  in drm_gem_shmem_test_vmap()
179 	KUNIT_ASSERT_FALSE(test, iosys_map_is_null(&map));  in drm_gem_shmem_test_vmap()
180 	KUNIT_EXPECT_EQ(test, shmem->vmap_use_count, 1);  in drm_gem_shmem_test_vmap()
184 		KUNIT_EXPECT_EQ(test, iosys_map_rd(&map, i, u8), TEST_BYTE);  in drm_gem_shmem_test_vmap()
187 	KUNIT_EXPECT_NULL(test, shmem->vaddr);  in drm_gem_shmem_test_vmap()
188 	KUNIT_EXPECT_EQ(test, shmem->vmap_use_count, 0);  in drm_gem_shmem_test_vmap()
192  * Test exporting a scatter/gather table of pinned pages suitable for
193  * PRIME usage from a shmem GEM object. The test case succeeds if a
197 static void drm_gem_shmem_test_get_pages_sgt(struct kunit *test)  in drm_gem_shmem_test_get_pages_sgt()  argument
199 	struct drm_device *drm_dev = test->priv;  in drm_gem_shmem_test_get_pages_sgt()
207 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);  in drm_gem_shmem_test_get_pages_sgt()
209 	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);  in drm_gem_shmem_test_get_pages_sgt()
210 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_get_pages_sgt()
213 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_get_pages_sgt()
216 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sgt);  in drm_gem_shmem_test_get_pages_sgt()
217 	KUNIT_EXPECT_NULL(test, shmem->sgt);  in drm_gem_shmem_test_get_pages_sgt()
219 	ret = kunit_add_action_or_reset(test, sg_free_table_wrapper, sgt);  in drm_gem_shmem_test_get_pages_sgt()
220 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_get_pages_sgt()
223 		KUNIT_EXPECT_NOT_NULL(test, sg);  in drm_gem_shmem_test_get_pages_sgt()
227 	KUNIT_EXPECT_GE(test, len, TEST_SIZE);  in drm_gem_shmem_test_get_pages_sgt()
231  * Test pinning pages and exporting a scatter/gather table suitable for
232  * driver usage from a shmem GEM object. The test case succeeds if the
236 static void drm_gem_shmem_test_get_sg_table(struct kunit *test)  in drm_gem_shmem_test_get_sg_table()  argument
238 	struct drm_device *drm_dev = test->priv;  in drm_gem_shmem_test_get_sg_table()
245 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);  in drm_gem_shmem_test_get_sg_table()
247 	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);  in drm_gem_shmem_test_get_sg_table()
248 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_get_sg_table()
252 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sgt);  in drm_gem_shmem_test_get_sg_table()
253 	KUNIT_ASSERT_NOT_NULL(test, shmem->pages);  in drm_gem_shmem_test_get_sg_table()
254 	KUNIT_EXPECT_EQ(test, shmem->pages_use_count, 1);  in drm_gem_shmem_test_get_sg_table()
255 	KUNIT_EXPECT_PTR_EQ(test, sgt, shmem->sgt);  in drm_gem_shmem_test_get_sg_table()
258 		KUNIT_EXPECT_NOT_NULL(test, sg);  in drm_gem_shmem_test_get_sg_table()
262 	KUNIT_EXPECT_GE(test, len, TEST_SIZE);  in drm_gem_shmem_test_get_sg_table()
266  * Test updating the madvise state of a shmem GEM object. The test
271 static void drm_gem_shmem_test_madvise(struct kunit *test)  in drm_gem_shmem_test_madvise()  argument
273 	struct drm_device *drm_dev = test->priv;  in drm_gem_shmem_test_madvise()
278 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);  in drm_gem_shmem_test_madvise()
279 	KUNIT_ASSERT_EQ(test, shmem->madv, 0);  in drm_gem_shmem_test_madvise()
281 	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);  in drm_gem_shmem_test_madvise()
282 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_madvise()
285 	KUNIT_EXPECT_TRUE(test, ret);  in drm_gem_shmem_test_madvise()
286 	KUNIT_ASSERT_EQ(test, shmem->madv, 1);  in drm_gem_shmem_test_madvise()
290 	KUNIT_EXPECT_FALSE(test, ret);  in drm_gem_shmem_test_madvise()
291 	KUNIT_ASSERT_EQ(test, shmem->madv, -1);  in drm_gem_shmem_test_madvise()
295 	KUNIT_EXPECT_FALSE(test, ret);  in drm_gem_shmem_test_madvise()
296 	KUNIT_ASSERT_EQ(test, shmem->madv, -1);  in drm_gem_shmem_test_madvise()
300  * Test purging a shmem GEM object. First, assert that a newly created
306 static void drm_gem_shmem_test_purge(struct kunit *test)  in drm_gem_shmem_test_purge()  argument
308 	struct drm_device *drm_dev = test->priv;  in drm_gem_shmem_test_purge()
314 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);  in drm_gem_shmem_test_purge()
316 	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);  in drm_gem_shmem_test_purge()
317 	KUNIT_ASSERT_EQ(test, ret, 0);  in drm_gem_shmem_test_purge()
320 	KUNIT_EXPECT_FALSE(test, ret);  in drm_gem_shmem_test_purge()
323 	KUNIT_EXPECT_TRUE(test, ret);  in drm_gem_shmem_test_purge()
327 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sgt);  in drm_gem_shmem_test_purge()
330 	KUNIT_EXPECT_TRUE(test, ret);  in drm_gem_shmem_test_purge()
333 	KUNIT_EXPECT_NULL(test, shmem->pages);  in drm_gem_shmem_test_purge()
334 	KUNIT_EXPECT_NULL(test, shmem->sgt);  in drm_gem_shmem_test_purge()
335 	KUNIT_EXPECT_EQ(test, shmem->madv, -1);  in drm_gem_shmem_test_purge()
338 static int drm_gem_shmem_test_init(struct kunit *test)  in drm_gem_shmem_test_init()  argument
344 	dev = drm_kunit_helper_alloc_device(test);  in drm_gem_shmem_test_init()
345 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);  in drm_gem_shmem_test_init()
352 	drm_dev = __drm_kunit_helper_alloc_drm_device(test, dev, sizeof(*drm_dev),  in drm_gem_shmem_test_init()
354 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, drm_dev);  in drm_gem_shmem_test_init()
356 	test->priv = drm_dev;  in drm_gem_shmem_test_init()
381 MODULE_DESCRIPTION("KUnit test suite for GEM objects backed by shmem buffers");