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7#include "i915_drv.h"
8#include "i915_selftest.h"
9
10#include "mock_dmabuf.h"
11#include "selftests/mock_gem_device.h"
12
13static int igt_dmabuf_export(void *arg)
14{
15 struct drm_i915_private *i915 = arg;
16 struct drm_i915_gem_object *obj;
17 struct dma_buf *dmabuf;
18
19 obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
20 if (IS_ERR(obj))
21 return PTR_ERR(obj);
22
23 dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0);
24 i915_gem_object_put(obj);
25 if (IS_ERR(dmabuf)) {
26 pr_err("i915_gem_prime_export failed with err=%d\n",
27 (int)PTR_ERR(dmabuf));
28 return PTR_ERR(dmabuf);
29 }
30
31 dma_buf_put(dmabuf);
32 return 0;
33}
34
35static int igt_dmabuf_import_self(void *arg)
36{
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;
41 int err;
42
43 obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
44 if (IS_ERR(obj))
45 return PTR_ERR(obj);
46
47 dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0);
48 if (IS_ERR(dmabuf)) {
49 pr_err("i915_gem_prime_export failed with err=%d\n",
50 (int)PTR_ERR(dmabuf));
51 err = PTR_ERR(dmabuf);
52 goto out;
53 }
54
55 import = i915_gem_prime_import(&i915->drm, dmabuf);
56 if (IS_ERR(import)) {
57 pr_err("i915_gem_prime_import failed with err=%d\n",
58 (int)PTR_ERR(import));
59 err = PTR_ERR(import);
60 goto out_dmabuf;
61 }
62
63 if (import != &obj->base) {
64 pr_err("i915_gem_prime_import created a new object!\n");
65 err = -EINVAL;
66 goto out_import;
67 }
68
69 err = 0;
70out_import:
71 i915_gem_object_put(to_intel_bo(import));
72out_dmabuf:
73 dma_buf_put(dmabuf);
74out:
75 i915_gem_object_put(obj);
76 return err;
77}
78
79static int igt_dmabuf_import(void *arg)
80{
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 };
86 int err, i;
87
88 dmabuf = mock_dmabuf(1);
89 if (IS_ERR(dmabuf))
90 return PTR_ERR(dmabuf);
91
92 obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf));
93 if (IS_ERR(obj)) {
94 pr_err("i915_gem_prime_import failed with err=%d\n",
95 (int)PTR_ERR(obj));
96 err = PTR_ERR(obj);
97 goto out_dmabuf;
98 }
99
100 if (obj->base.dev != &i915->drm) {
101 pr_err("i915_gem_prime_import created a non-i915 object!\n");
102 err = -EINVAL;
103 goto out_obj;
104 }
105
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);
109 err = -EINVAL;
110 goto out_obj;
111 }
112
113 dma_map = dma_buf_vmap(dmabuf);
114 if (!dma_map) {
115 pr_err("dma_buf_vmap failed\n");
116 err = -ENOMEM;
117 goto out_obj;
118 }
119
120 if (0) {
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);
125 goto out_dma_map;
126 }
127
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)) {
131 err = -EINVAL;
132 pr_err("imported vmap not all set to %x!\n", pattern[i]);
133 i915_gem_object_unpin_map(obj);
134 goto out_dma_map;
135 }
136 }
137
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)) {
141 err = -EINVAL;
142 pr_err("exported vmap not all set to %x!\n", pattern[i]);
143 i915_gem_object_unpin_map(obj);
144 goto out_dma_map;
145 }
146 }
147
148 i915_gem_object_unpin_map(obj);
149 }
150
151 err = 0;
152out_dma_map:
153 dma_buf_vunmap(dmabuf, dma_map);
154out_obj:
155 i915_gem_object_put(obj);
156out_dmabuf:
157 dma_buf_put(dmabuf);
158 return err;
159}
160
161static int igt_dmabuf_import_ownership(void *arg)
162{
163 struct drm_i915_private *i915 = arg;
164 struct drm_i915_gem_object *obj;
165 struct dma_buf *dmabuf;
166 void *ptr;
167 int err;
168
169 dmabuf = mock_dmabuf(1);
170 if (IS_ERR(dmabuf))
171 return PTR_ERR(dmabuf);
172
173 ptr = dma_buf_vmap(dmabuf);
174 if (!ptr) {
175 pr_err("dma_buf_vmap failed\n");
176 err = -ENOMEM;
177 goto err_dmabuf;
178 }
179
180 memset(ptr, 0xc5, PAGE_SIZE);
181 dma_buf_vunmap(dmabuf, ptr);
182
183 obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf));
184 if (IS_ERR(obj)) {
185 pr_err("i915_gem_prime_import failed with err=%d\n",
186 (int)PTR_ERR(obj));
187 err = PTR_ERR(obj);
188 goto err_dmabuf;
189 }
190
191 dma_buf_put(dmabuf);
192
193 err = i915_gem_object_pin_pages(obj);
194 if (err) {
195 pr_err("i915_gem_object_pin_pages failed with err=%d\n", err);
196 goto out_obj;
197 }
198
199 err = 0;
200 i915_gem_object_unpin_pages(obj);
201out_obj:
202 i915_gem_object_put(obj);
203 return err;
204
205err_dmabuf:
206 dma_buf_put(dmabuf);
207 return err;
208}
209
210static int igt_dmabuf_export_vmap(void *arg)
211{
212 struct drm_i915_private *i915 = arg;
213 struct drm_i915_gem_object *obj;
214 struct dma_buf *dmabuf;
215 void *ptr;
216 int err;
217
218 obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
219 if (IS_ERR(obj))
220 return PTR_ERR(obj);
221
222 dmabuf = i915_gem_prime_export(&i915->drm, &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);
227 goto err_obj;
228 }
229 i915_gem_object_put(obj);
230
231 ptr = dma_buf_vmap(dmabuf);
232 if (!ptr) {
233 pr_err("dma_buf_vmap failed\n");
234 err = -ENOMEM;
235 goto out;
236 }
237
238 if (memchr_inv(ptr, 0, dmabuf->size)) {
239 pr_err("Exported object not initialiased to zero!\n");
240 err = -EINVAL;
241 goto out;
242 }
243
244 memset(ptr, 0xc5, dmabuf->size);
245
246 err = 0;
247 dma_buf_vunmap(dmabuf, ptr);
248out:
249 dma_buf_put(dmabuf);
250 return err;
251
252err_obj:
253 i915_gem_object_put(obj);
254 return err;
255}
256
257static int igt_dmabuf_export_kmap(void *arg)
258{
259 struct drm_i915_private *i915 = arg;
260 struct drm_i915_gem_object *obj;
261 struct dma_buf *dmabuf;
262 void *ptr;
263 int err;
264
265 obj = i915_gem_object_create_shmem(i915, 2 * PAGE_SIZE);
266 if (IS_ERR(obj))
267 return PTR_ERR(obj);
268
269 dmabuf = i915_gem_prime_export(&i915->drm, &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);
274 return err;
275 }
276
277 ptr = dma_buf_kmap(dmabuf, 0);
278 if (!ptr) {
279 pr_err("dma_buf_kmap failed\n");
280 err = -ENOMEM;
281 goto err;
282 }
283
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");
287 err = -EINVAL;
288 goto err;
289 }
290
291 memset(ptr, 0xc5, PAGE_SIZE);
292 dma_buf_kunmap(dmabuf, 0, ptr);
293
294 ptr = i915_gem_object_pin_map(obj, I915_MAP_WB);
295 if (IS_ERR(ptr)) {
296 err = PTR_ERR(ptr);
297 pr_err("i915_gem_object_pin_map failed with err=%d\n", err);
298 goto err;
299 }
300 memset(ptr + PAGE_SIZE, 0xaa, PAGE_SIZE);
301 i915_gem_object_flush_map(obj);
302 i915_gem_object_unpin_map(obj);
303
304 ptr = dma_buf_kmap(dmabuf, 1);
305 if (!ptr) {
306 pr_err("dma_buf_kmap failed\n");
307 err = -ENOMEM;
308 goto err;
309 }
310
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");
314 err = -EINVAL;
315 goto err;
316 }
317
318 memset(ptr, 0xc5, PAGE_SIZE);
319 dma_buf_kunmap(dmabuf, 1, ptr);
320
321 ptr = dma_buf_kmap(dmabuf, 0);
322 if (!ptr) {
323 pr_err("dma_buf_kmap failed\n");
324 err = -ENOMEM;
325 goto err;
326 }
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");
330 err = -EINVAL;
331 goto err;
332 }
333 dma_buf_kunmap(dmabuf, 0, ptr);
334
335 ptr = dma_buf_kmap(dmabuf, 2);
336 if (ptr) {
337 pr_err("Erroneously kmapped beyond the end of the object!\n");
338 dma_buf_kunmap(dmabuf, 2, ptr);
339 err = -EINVAL;
340 goto err;
341 }
342
343 ptr = dma_buf_kmap(dmabuf, -1);
344 if (ptr) {
345 pr_err("Erroneously kmapped before the start of the object!\n");
346 dma_buf_kunmap(dmabuf, -1, ptr);
347 err = -EINVAL;
348 goto err;
349 }
350
351 err = 0;
352err:
353 dma_buf_put(dmabuf);
354 return err;
355}
356
357int i915_gem_dmabuf_mock_selftests(void)
358{
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),
366 };
367 struct drm_i915_private *i915;
368 int err;
369
370 i915 = mock_gem_device();
371 if (!i915)
372 return -ENOMEM;
373
374 err = i915_subtests(tests, i915);
375
376 drm_dev_put(&i915->drm);
377 return err;
378}
379
380int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915)
381{
382 static const struct i915_subtest tests[] = {
383 SUBTEST(igt_dmabuf_export),
384 };
385
386 return i915_subtests(tests, i915);
387}
388
