2 * SPDX-License-Identifier: MIT
4 * Copyright © 2016 Intel Corporation
8 #include "i915_selftest.h"
10 #include "mock_dmabuf.h"
11 #include "selftests/mock_gem_device.h"
13 static int igt_dmabuf_export(void *arg)
15 struct drm_i915_private *i915 = arg;
16 struct drm_i915_gem_object *obj;
17 struct dma_buf *dmabuf;
19 obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
23 dmabuf = i915_gem_prime_export(&obj->base, 0);
24 i915_gem_object_put(obj);
26 pr_err("i915_gem_prime_export failed with err=%d\n",
27 (int)PTR_ERR(dmabuf));
28 return PTR_ERR(dmabuf);
35 static int igt_dmabuf_import_self(void *arg)
37 struct drm_i915_private *i915 = arg;
38 struct drm_i915_gem_object *obj;
39 struct drm_gem_object *import;
40 struct dma_buf *dmabuf;
43 obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
47 dmabuf = i915_gem_prime_export(&obj->base, 0);
49 pr_err("i915_gem_prime_export failed with err=%d\n",
50 (int)PTR_ERR(dmabuf));
51 err = PTR_ERR(dmabuf);
55 import = i915_gem_prime_import(&i915->drm, dmabuf);
57 pr_err("i915_gem_prime_import failed with err=%d\n",
58 (int)PTR_ERR(import));
59 err = PTR_ERR(import);
63 if (import != &obj->base) {
64 pr_err("i915_gem_prime_import created a new object!\n");
71 i915_gem_object_put(to_intel_bo(import));
75 i915_gem_object_put(obj);
79 static int igt_dmabuf_import(void *arg)
81 struct drm_i915_private *i915 = arg;
82 struct drm_i915_gem_object *obj;
83 struct dma_buf *dmabuf;
84 void *obj_map, *dma_map;
85 u32 pattern[] = { 0, 0xaa, 0xcc, 0x55, 0xff };
88 dmabuf = mock_dmabuf(1);
90 return PTR_ERR(dmabuf);
92 obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf));
94 pr_err("i915_gem_prime_import failed with err=%d\n",
100 if (obj->base.dev != &i915->drm) {
101 pr_err("i915_gem_prime_import created a non-i915 object!\n");
106 if (obj->base.size != PAGE_SIZE) {
107 pr_err("i915_gem_prime_import is wrong size found %lld, expected %ld\n",
108 (long long)obj->base.size, PAGE_SIZE);
113 dma_map = dma_buf_vmap(dmabuf);
115 pr_err("dma_buf_vmap failed\n");
120 if (0) { /* Can not yet map dmabuf */
121 obj_map = i915_gem_object_pin_map(obj, I915_MAP_WB);
122 if (IS_ERR(obj_map)) {
123 err = PTR_ERR(obj_map);
124 pr_err("i915_gem_object_pin_map failed with err=%d\n", err);
128 for (i = 0; i < ARRAY_SIZE(pattern); i++) {
129 memset(dma_map, pattern[i], PAGE_SIZE);
130 if (memchr_inv(obj_map, pattern[i], PAGE_SIZE)) {
132 pr_err("imported vmap not all set to %x!\n", pattern[i]);
133 i915_gem_object_unpin_map(obj);
138 for (i = 0; i < ARRAY_SIZE(pattern); i++) {
139 memset(obj_map, pattern[i], PAGE_SIZE);
140 if (memchr_inv(dma_map, pattern[i], PAGE_SIZE)) {
142 pr_err("exported vmap not all set to %x!\n", pattern[i]);
143 i915_gem_object_unpin_map(obj);
148 i915_gem_object_unpin_map(obj);
153 dma_buf_vunmap(dmabuf, dma_map);
155 i915_gem_object_put(obj);
161 static int igt_dmabuf_import_ownership(void *arg)
163 struct drm_i915_private *i915 = arg;
164 struct drm_i915_gem_object *obj;
165 struct dma_buf *dmabuf;
169 dmabuf = mock_dmabuf(1);
171 return PTR_ERR(dmabuf);
173 ptr = dma_buf_vmap(dmabuf);
175 pr_err("dma_buf_vmap failed\n");
180 memset(ptr, 0xc5, PAGE_SIZE);
181 dma_buf_vunmap(dmabuf, ptr);
183 obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf));
185 pr_err("i915_gem_prime_import failed with err=%d\n",
193 err = i915_gem_object_pin_pages(obj);
195 pr_err("i915_gem_object_pin_pages failed with err=%d\n", err);
200 i915_gem_object_unpin_pages(obj);
202 i915_gem_object_put(obj);
210 static int igt_dmabuf_export_vmap(void *arg)
212 struct drm_i915_private *i915 = arg;
213 struct drm_i915_gem_object *obj;
214 struct dma_buf *dmabuf;
218 obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
222 dmabuf = i915_gem_prime_export(&obj->base, 0);
223 if (IS_ERR(dmabuf)) {
224 pr_err("i915_gem_prime_export failed with err=%d\n",
225 (int)PTR_ERR(dmabuf));
226 err = PTR_ERR(dmabuf);
229 i915_gem_object_put(obj);
231 ptr = dma_buf_vmap(dmabuf);
233 pr_err("dma_buf_vmap failed\n");
238 if (memchr_inv(ptr, 0, dmabuf->size)) {
239 pr_err("Exported object not initialiased to zero!\n");
244 memset(ptr, 0xc5, dmabuf->size);
247 dma_buf_vunmap(dmabuf, ptr);
253 i915_gem_object_put(obj);
257 static int igt_dmabuf_export_kmap(void *arg)
259 struct drm_i915_private *i915 = arg;
260 struct drm_i915_gem_object *obj;
261 struct dma_buf *dmabuf;
265 obj = i915_gem_object_create_shmem(i915, 2 * PAGE_SIZE);
269 dmabuf = i915_gem_prime_export(&obj->base, 0);
270 i915_gem_object_put(obj);
271 if (IS_ERR(dmabuf)) {
272 err = PTR_ERR(dmabuf);
273 pr_err("i915_gem_prime_export failed with err=%d\n", err);
277 ptr = dma_buf_kmap(dmabuf, 0);
279 pr_err("dma_buf_kmap failed\n");
284 if (memchr_inv(ptr, 0, PAGE_SIZE)) {
285 dma_buf_kunmap(dmabuf, 0, ptr);
286 pr_err("Exported page[0] not initialiased to zero!\n");
291 memset(ptr, 0xc5, PAGE_SIZE);
292 dma_buf_kunmap(dmabuf, 0, ptr);
294 ptr = i915_gem_object_pin_map(obj, I915_MAP_WB);
297 pr_err("i915_gem_object_pin_map failed with err=%d\n", err);
300 memset(ptr + PAGE_SIZE, 0xaa, PAGE_SIZE);
301 i915_gem_object_flush_map(obj);
302 i915_gem_object_unpin_map(obj);
304 ptr = dma_buf_kmap(dmabuf, 1);
306 pr_err("dma_buf_kmap failed\n");
311 if (memchr_inv(ptr, 0xaa, PAGE_SIZE)) {
312 dma_buf_kunmap(dmabuf, 1, ptr);
313 pr_err("Exported page[1] not set to 0xaa!\n");
318 memset(ptr, 0xc5, PAGE_SIZE);
319 dma_buf_kunmap(dmabuf, 1, ptr);
321 ptr = dma_buf_kmap(dmabuf, 0);
323 pr_err("dma_buf_kmap failed\n");
327 if (memchr_inv(ptr, 0xc5, PAGE_SIZE)) {
328 dma_buf_kunmap(dmabuf, 0, ptr);
329 pr_err("Exported page[0] did not retain 0xc5!\n");
333 dma_buf_kunmap(dmabuf, 0, ptr);
335 ptr = dma_buf_kmap(dmabuf, 2);
337 pr_err("Erroneously kmapped beyond the end of the object!\n");
338 dma_buf_kunmap(dmabuf, 2, ptr);
343 ptr = dma_buf_kmap(dmabuf, -1);
345 pr_err("Erroneously kmapped before the start of the object!\n");
346 dma_buf_kunmap(dmabuf, -1, ptr);
357 int i915_gem_dmabuf_mock_selftests(void)
359 static const struct i915_subtest tests[] = {
360 SUBTEST(igt_dmabuf_export),
361 SUBTEST(igt_dmabuf_import_self),
362 SUBTEST(igt_dmabuf_import),
363 SUBTEST(igt_dmabuf_import_ownership),
364 SUBTEST(igt_dmabuf_export_vmap),
365 SUBTEST(igt_dmabuf_export_kmap),
367 struct drm_i915_private *i915;
370 i915 = mock_gem_device();
374 err = i915_subtests(tests, i915);
376 drm_dev_put(&i915->drm);
380 int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915)
382 static const struct i915_subtest tests[] = {
383 SUBTEST(igt_dmabuf_export),
386 return i915_subtests(tests, i915);