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e9083420 DA |
1 | /* |
2 | * Copyright 2017 Red Hat | |
5e60a10e DA |
3 | * Parts ported from amdgpu (fence wait code). |
4 | * Copyright 2016 Advanced Micro Devices, Inc. | |
e9083420 DA |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice (including the next | |
14 | * paragraph) shall be included in all copies or substantial portions of the | |
15 | * Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
22 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
23 | * IN THE SOFTWARE. | |
24 | * | |
25 | * Authors: | |
26 | * | |
27 | */ | |
28 | ||
29 | /** | |
30 | * DOC: Overview | |
31 | * | |
924fe8df DV |
32 | * DRM synchronisation objects (syncobj, see struct &drm_syncobj) are |
33 | * persistent objects that contain an optional fence. The fence can be updated | |
34 | * with a new fence, or be NULL. | |
e9083420 | 35 | * |
5e60a10e DA |
36 | * syncobj's can be waited upon, where it will wait for the underlying |
37 | * fence. | |
38 | * | |
e9083420 DA |
39 | * syncobj's can be export to fd's and back, these fd's are opaque and |
40 | * have no other use case, except passing the syncobj between processes. | |
41 | * | |
42 | * Their primary use-case is to implement Vulkan fences and semaphores. | |
43 | * | |
44 | * syncobj have a kref reference count, but also have an optional file. | |
45 | * The file is only created once the syncobj is exported. | |
46 | * The file takes a reference on the kref. | |
47 | */ | |
48 | ||
0500c04e | 49 | #include <linux/anon_inodes.h> |
e9083420 DA |
50 | #include <linux/file.h> |
51 | #include <linux/fs.h> | |
e7aca503 | 52 | #include <linux/sched/signal.h> |
0500c04e SR |
53 | #include <linux/sync_file.h> |
54 | #include <linux/uaccess.h> | |
e9083420 | 55 | |
0500c04e SR |
56 | #include <drm/drm_drv.h> |
57 | #include <drm/drm_file.h> | |
58 | #include <drm/drm_gem.h> | |
59 | #include <drm/drm_print.h> | |
e9083420 DA |
60 | #include <drm/drm_syncobj.h> |
61 | ||
0500c04e SR |
62 | #include "drm_internal.h" |
63 | ||
61a98b1b CK |
64 | struct syncobj_wait_entry { |
65 | struct list_head node; | |
66 | struct task_struct *task; | |
67 | struct dma_fence *fence; | |
68 | struct dma_fence_cb fence_cb; | |
01d6c357 | 69 | u64 point; |
61a98b1b CK |
70 | }; |
71 | ||
72 | static void syncobj_wait_syncobj_func(struct drm_syncobj *syncobj, | |
73 | struct syncobj_wait_entry *wait); | |
74 | ||
e9083420 DA |
75 | /** |
76 | * drm_syncobj_find - lookup and reference a sync object. | |
77 | * @file_private: drm file private pointer | |
78 | * @handle: sync object handle to lookup. | |
79 | * | |
924fe8df DV |
80 | * Returns a reference to the syncobj pointed to by handle or NULL. The |
81 | * reference must be released by calling drm_syncobj_put(). | |
e9083420 DA |
82 | */ |
83 | struct drm_syncobj *drm_syncobj_find(struct drm_file *file_private, | |
84 | u32 handle) | |
85 | { | |
86 | struct drm_syncobj *syncobj; | |
87 | ||
88 | spin_lock(&file_private->syncobj_table_lock); | |
89 | ||
90 | /* Check if we currently have a reference on the object */ | |
91 | syncobj = idr_find(&file_private->syncobj_idr, handle); | |
92 | if (syncobj) | |
93 | drm_syncobj_get(syncobj); | |
94 | ||
95 | spin_unlock(&file_private->syncobj_table_lock); | |
96 | ||
97 | return syncobj; | |
98 | } | |
99 | EXPORT_SYMBOL(drm_syncobj_find); | |
100 | ||
61a98b1b CK |
101 | static void drm_syncobj_fence_add_wait(struct drm_syncobj *syncobj, |
102 | struct syncobj_wait_entry *wait) | |
9c19fb10 | 103 | { |
01d6c357 CZ |
104 | struct dma_fence *fence; |
105 | ||
61a98b1b CK |
106 | if (wait->fence) |
107 | return; | |
43cf1fc0 | 108 | |
131280a1 EA |
109 | spin_lock(&syncobj->lock); |
110 | /* We've already tried once to get a fence and failed. Now that we | |
111 | * have the lock, try one more time just to be sure we don't add a | |
112 | * callback when a fence has already been set. | |
113 | */ | |
01d6c357 CZ |
114 | fence = dma_fence_get(rcu_dereference_protected(syncobj->fence, 1)); |
115 | if (!fence || dma_fence_chain_find_seqno(&fence, wait->point)) { | |
116 | dma_fence_put(fence); | |
61a98b1b | 117 | list_add_tail(&wait->node, &syncobj->cb_list); |
01d6c357 CZ |
118 | } else if (!fence) { |
119 | wait->fence = dma_fence_get_stub(); | |
120 | } else { | |
121 | wait->fence = fence; | |
122 | } | |
131280a1 | 123 | spin_unlock(&syncobj->lock); |
48197bc5 CZ |
124 | } |
125 | ||
61a98b1b CK |
126 | static void drm_syncobj_remove_wait(struct drm_syncobj *syncobj, |
127 | struct syncobj_wait_entry *wait) | |
48197bc5 | 128 | { |
61a98b1b CK |
129 | if (!wait->node.next) |
130 | return; | |
48197bc5 | 131 | |
131280a1 | 132 | spin_lock(&syncobj->lock); |
61a98b1b | 133 | list_del_init(&wait->node); |
131280a1 | 134 | spin_unlock(&syncobj->lock); |
48197bc5 CZ |
135 | } |
136 | ||
44f8a139 CK |
137 | /** |
138 | * drm_syncobj_add_point - add new timeline point to the syncobj | |
139 | * @syncobj: sync object to add timeline point do | |
140 | * @chain: chain node to use to add the point | |
141 | * @fence: fence to encapsulate in the chain node | |
142 | * @point: sequence number to use for the point | |
143 | * | |
144 | * Add the chain node as new timeline point to the syncobj. | |
145 | */ | |
146 | void drm_syncobj_add_point(struct drm_syncobj *syncobj, | |
147 | struct dma_fence_chain *chain, | |
148 | struct dma_fence *fence, | |
149 | uint64_t point) | |
150 | { | |
151 | struct syncobj_wait_entry *cur, *tmp; | |
152 | struct dma_fence *prev; | |
153 | ||
154 | dma_fence_get(fence); | |
155 | ||
156 | spin_lock(&syncobj->lock); | |
157 | ||
158 | prev = drm_syncobj_fence_get(syncobj); | |
159 | /* You are adding an unorder point to timeline, which could cause payload returned from query_ioctl is 0! */ | |
160 | if (prev && prev->seqno >= point) | |
161 | DRM_ERROR("You are adding an unorder point to timeline!\n"); | |
162 | dma_fence_chain_init(chain, prev, fence, point); | |
163 | rcu_assign_pointer(syncobj->fence, &chain->base); | |
164 | ||
01d6c357 | 165 | list_for_each_entry_safe(cur, tmp, &syncobj->cb_list, node) |
44f8a139 | 166 | syncobj_wait_syncobj_func(syncobj, cur); |
44f8a139 CK |
167 | spin_unlock(&syncobj->lock); |
168 | ||
169 | /* Walk the chain once to trigger garbage collection */ | |
170 | dma_fence_chain_for_each(fence, prev); | |
171 | dma_fence_put(prev); | |
172 | } | |
173 | EXPORT_SYMBOL(drm_syncobj_add_point); | |
174 | ||
e9083420 DA |
175 | /** |
176 | * drm_syncobj_replace_fence - replace fence in a sync object. | |
e9083420 DA |
177 | * @syncobj: Sync object to replace fence in |
178 | * @fence: fence to install in sync file. | |
179 | * | |
0b258ed1 | 180 | * This replaces the fence on a sync object. |
e9083420 | 181 | */ |
00fc2c26 | 182 | void drm_syncobj_replace_fence(struct drm_syncobj *syncobj, |
e9083420 DA |
183 | struct dma_fence *fence) |
184 | { | |
131280a1 | 185 | struct dma_fence *old_fence; |
61a98b1b | 186 | struct syncobj_wait_entry *cur, *tmp; |
131280a1 EA |
187 | |
188 | if (fence) | |
189 | dma_fence_get(fence); | |
190 | ||
191 | spin_lock(&syncobj->lock); | |
192 | ||
193 | old_fence = rcu_dereference_protected(syncobj->fence, | |
194 | lockdep_is_held(&syncobj->lock)); | |
195 | rcu_assign_pointer(syncobj->fence, fence); | |
9c19fb10 | 196 | |
131280a1 | 197 | if (fence != old_fence) { |
01d6c357 | 198 | list_for_each_entry_safe(cur, tmp, &syncobj->cb_list, node) |
61a98b1b | 199 | syncobj_wait_syncobj_func(syncobj, cur); |
9c19fb10 | 200 | } |
131280a1 EA |
201 | |
202 | spin_unlock(&syncobj->lock); | |
203 | ||
204 | dma_fence_put(old_fence); | |
e9083420 DA |
205 | } |
206 | EXPORT_SYMBOL(drm_syncobj_replace_fence); | |
207 | ||
86bbd89d CK |
208 | /** |
209 | * drm_syncobj_assign_null_handle - assign a stub fence to the sync object | |
210 | * @syncobj: sync object to assign the fence on | |
211 | * | |
212 | * Assign a already signaled stub fence to the sync object. | |
213 | */ | |
214 | static void drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj) | |
1fc08218 | 215 | { |
86bbd89d | 216 | struct dma_fence *fence = dma_fence_get_stub(); |
1fc08218 | 217 | |
0b258ed1 | 218 | drm_syncobj_replace_fence(syncobj, fence); |
86bbd89d | 219 | dma_fence_put(fence); |
1fc08218 JE |
220 | } |
221 | ||
bc9c80fe CK |
222 | /* 5s default for wait submission */ |
223 | #define DRM_SYNCOBJ_WAIT_FOR_SUBMIT_TIMEOUT 5000000000ULL | |
924fe8df DV |
224 | /** |
225 | * drm_syncobj_find_fence - lookup and reference the fence in a sync object | |
226 | * @file_private: drm file private pointer | |
227 | * @handle: sync object handle to lookup. | |
0a6730ea | 228 | * @point: timeline point |
871edc96 | 229 | * @flags: DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT or not |
924fe8df DV |
230 | * @fence: out parameter for the fence |
231 | * | |
232 | * This is just a convenience function that combines drm_syncobj_find() and | |
131280a1 | 233 | * drm_syncobj_fence_get(). |
924fe8df DV |
234 | * |
235 | * Returns 0 on success or a negative error value on failure. On success @fence | |
236 | * contains a reference to the fence, which must be released by calling | |
237 | * dma_fence_put(). | |
238 | */ | |
afaf5923 | 239 | int drm_syncobj_find_fence(struct drm_file *file_private, |
649fdce2 | 240 | u32 handle, u64 point, u64 flags, |
afaf5923 | 241 | struct dma_fence **fence) |
e9083420 DA |
242 | { |
243 | struct drm_syncobj *syncobj = drm_syncobj_find(file_private, handle); | |
bc9c80fe CK |
244 | struct syncobj_wait_entry wait; |
245 | u64 timeout = nsecs_to_jiffies64(DRM_SYNCOBJ_WAIT_FOR_SUBMIT_TIMEOUT); | |
246 | int ret; | |
e9083420 | 247 | |
131280a1 EA |
248 | if (!syncobj) |
249 | return -ENOENT; | |
250 | ||
251 | *fence = drm_syncobj_fence_get(syncobj); | |
bc9c80fe CK |
252 | drm_syncobj_put(syncobj); |
253 | ||
254 | if (*fence) { | |
255 | ret = dma_fence_chain_find_seqno(fence, point); | |
256 | if (!ret) | |
257 | return 0; | |
258 | dma_fence_put(*fence); | |
259 | } else { | |
131280a1 EA |
260 | ret = -EINVAL; |
261 | } | |
bc9c80fe CK |
262 | |
263 | if (!(flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT)) | |
264 | return ret; | |
265 | ||
266 | memset(&wait, 0, sizeof(wait)); | |
267 | wait.task = current; | |
268 | wait.point = point; | |
269 | drm_syncobj_fence_add_wait(syncobj, &wait); | |
270 | ||
271 | do { | |
272 | set_current_state(TASK_INTERRUPTIBLE); | |
273 | if (wait.fence) { | |
274 | ret = 0; | |
275 | break; | |
276 | } | |
277 | if (timeout == 0) { | |
278 | ret = -ETIME; | |
279 | break; | |
280 | } | |
281 | ||
282 | if (signal_pending(current)) { | |
283 | ret = -ERESTARTSYS; | |
284 | break; | |
285 | } | |
286 | ||
287 | timeout = schedule_timeout(timeout); | |
288 | } while (1); | |
289 | ||
290 | __set_current_state(TASK_RUNNING); | |
291 | *fence = wait.fence; | |
292 | ||
293 | if (wait.node.next) | |
294 | drm_syncobj_remove_wait(syncobj, &wait); | |
295 | ||
e9083420 DA |
296 | return ret; |
297 | } | |
afaf5923 | 298 | EXPORT_SYMBOL(drm_syncobj_find_fence); |
e9083420 DA |
299 | |
300 | /** | |
301 | * drm_syncobj_free - free a sync object. | |
302 | * @kref: kref to free. | |
303 | * | |
304 | * Only to be called from kref_put in drm_syncobj_put. | |
305 | */ | |
306 | void drm_syncobj_free(struct kref *kref) | |
307 | { | |
308 | struct drm_syncobj *syncobj = container_of(kref, | |
309 | struct drm_syncobj, | |
310 | refcount); | |
0b258ed1 | 311 | drm_syncobj_replace_fence(syncobj, NULL); |
e9083420 DA |
312 | kfree(syncobj); |
313 | } | |
314 | EXPORT_SYMBOL(drm_syncobj_free); | |
315 | ||
1321fd2c MO |
316 | /** |
317 | * drm_syncobj_create - create a new syncobj | |
318 | * @out_syncobj: returned syncobj | |
319 | * @flags: DRM_SYNCOBJ_* flags | |
320 | * @fence: if non-NULL, the syncobj will represent this fence | |
924fe8df DV |
321 | * |
322 | * This is the first function to create a sync object. After creating, drivers | |
323 | * probably want to make it available to userspace, either through | |
324 | * drm_syncobj_get_handle() or drm_syncobj_get_fd(). | |
325 | * | |
326 | * Returns 0 on success or a negative error value on failure. | |
1321fd2c MO |
327 | */ |
328 | int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags, | |
329 | struct dma_fence *fence) | |
e9083420 | 330 | { |
e9083420 DA |
331 | struct drm_syncobj *syncobj; |
332 | ||
333 | syncobj = kzalloc(sizeof(struct drm_syncobj), GFP_KERNEL); | |
334 | if (!syncobj) | |
335 | return -ENOMEM; | |
336 | ||
337 | kref_init(&syncobj->refcount); | |
9c19fb10 | 338 | INIT_LIST_HEAD(&syncobj->cb_list); |
131280a1 | 339 | spin_lock_init(&syncobj->lock); |
e9083420 | 340 | |
86bbd89d CK |
341 | if (flags & DRM_SYNCOBJ_CREATE_SIGNALED) |
342 | drm_syncobj_assign_null_handle(syncobj); | |
1fc08218 | 343 | |
1321fd2c | 344 | if (fence) |
0b258ed1 | 345 | drm_syncobj_replace_fence(syncobj, fence); |
1321fd2c MO |
346 | |
347 | *out_syncobj = syncobj; | |
348 | return 0; | |
349 | } | |
350 | EXPORT_SYMBOL(drm_syncobj_create); | |
351 | ||
352 | /** | |
353 | * drm_syncobj_get_handle - get a handle from a syncobj | |
924fe8df DV |
354 | * @file_private: drm file private pointer |
355 | * @syncobj: Sync object to export | |
356 | * @handle: out parameter with the new handle | |
357 | * | |
358 | * Exports a sync object created with drm_syncobj_create() as a handle on | |
359 | * @file_private to userspace. | |
360 | * | |
361 | * Returns 0 on success or a negative error value on failure. | |
1321fd2c MO |
362 | */ |
363 | int drm_syncobj_get_handle(struct drm_file *file_private, | |
364 | struct drm_syncobj *syncobj, u32 *handle) | |
365 | { | |
366 | int ret; | |
367 | ||
368 | /* take a reference to put in the idr */ | |
369 | drm_syncobj_get(syncobj); | |
370 | ||
e9083420 DA |
371 | idr_preload(GFP_KERNEL); |
372 | spin_lock(&file_private->syncobj_table_lock); | |
373 | ret = idr_alloc(&file_private->syncobj_idr, syncobj, 1, 0, GFP_NOWAIT); | |
374 | spin_unlock(&file_private->syncobj_table_lock); | |
375 | ||
376 | idr_preload_end(); | |
377 | ||
378 | if (ret < 0) { | |
379 | drm_syncobj_put(syncobj); | |
380 | return ret; | |
381 | } | |
382 | ||
383 | *handle = ret; | |
384 | return 0; | |
385 | } | |
1321fd2c MO |
386 | EXPORT_SYMBOL(drm_syncobj_get_handle); |
387 | ||
388 | static int drm_syncobj_create_as_handle(struct drm_file *file_private, | |
389 | u32 *handle, uint32_t flags) | |
390 | { | |
391 | int ret; | |
392 | struct drm_syncobj *syncobj; | |
393 | ||
394 | ret = drm_syncobj_create(&syncobj, flags, NULL); | |
395 | if (ret) | |
396 | return ret; | |
397 | ||
398 | ret = drm_syncobj_get_handle(file_private, syncobj, handle); | |
399 | drm_syncobj_put(syncobj); | |
400 | return ret; | |
401 | } | |
e9083420 DA |
402 | |
403 | static int drm_syncobj_destroy(struct drm_file *file_private, | |
404 | u32 handle) | |
405 | { | |
406 | struct drm_syncobj *syncobj; | |
407 | ||
408 | spin_lock(&file_private->syncobj_table_lock); | |
409 | syncobj = idr_remove(&file_private->syncobj_idr, handle); | |
410 | spin_unlock(&file_private->syncobj_table_lock); | |
411 | ||
412 | if (!syncobj) | |
413 | return -EINVAL; | |
414 | ||
415 | drm_syncobj_put(syncobj); | |
416 | return 0; | |
417 | } | |
418 | ||
419 | static int drm_syncobj_file_release(struct inode *inode, struct file *file) | |
420 | { | |
421 | struct drm_syncobj *syncobj = file->private_data; | |
422 | ||
423 | drm_syncobj_put(syncobj); | |
424 | return 0; | |
425 | } | |
426 | ||
427 | static const struct file_operations drm_syncobj_file_fops = { | |
428 | .release = drm_syncobj_file_release, | |
429 | }; | |
430 | ||
924fe8df DV |
431 | /** |
432 | * drm_syncobj_get_fd - get a file descriptor from a syncobj | |
433 | * @syncobj: Sync object to export | |
434 | * @p_fd: out parameter with the new file descriptor | |
435 | * | |
436 | * Exports a sync object created with drm_syncobj_create() as a file descriptor. | |
437 | * | |
438 | * Returns 0 on success or a negative error value on failure. | |
439 | */ | |
684fd0af | 440 | int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd) |
e9083420 | 441 | { |
e7cdf5c8 | 442 | struct file *file; |
e9083420 DA |
443 | int fd; |
444 | ||
e9083420 | 445 | fd = get_unused_fd_flags(O_CLOEXEC); |
684fd0af | 446 | if (fd < 0) |
e9083420 | 447 | return fd; |
e9083420 | 448 | |
e7cdf5c8 CW |
449 | file = anon_inode_getfile("syncobj_file", |
450 | &drm_syncobj_file_fops, | |
451 | syncobj, 0); | |
452 | if (IS_ERR(file)) { | |
453 | put_unused_fd(fd); | |
454 | return PTR_ERR(file); | |
e9083420 | 455 | } |
e7cdf5c8 CW |
456 | |
457 | drm_syncobj_get(syncobj); | |
458 | fd_install(fd, file); | |
459 | ||
e9083420 DA |
460 | *p_fd = fd; |
461 | return 0; | |
684fd0af MO |
462 | } |
463 | EXPORT_SYMBOL(drm_syncobj_get_fd); | |
464 | ||
465 | static int drm_syncobj_handle_to_fd(struct drm_file *file_private, | |
466 | u32 handle, int *p_fd) | |
467 | { | |
468 | struct drm_syncobj *syncobj = drm_syncobj_find(file_private, handle); | |
469 | int ret; | |
470 | ||
471 | if (!syncobj) | |
472 | return -EINVAL; | |
473 | ||
474 | ret = drm_syncobj_get_fd(syncobj, p_fd); | |
e9083420 DA |
475 | drm_syncobj_put(syncobj); |
476 | return ret; | |
477 | } | |
478 | ||
e9083420 DA |
479 | static int drm_syncobj_fd_to_handle(struct drm_file *file_private, |
480 | int fd, u32 *handle) | |
481 | { | |
e7cdf5c8 | 482 | struct drm_syncobj *syncobj; |
fb386243 | 483 | struct fd f = fdget(fd); |
e9083420 DA |
484 | int ret; |
485 | ||
fb386243 | 486 | if (!f.file) |
e9083420 DA |
487 | return -EINVAL; |
488 | ||
fb386243 AV |
489 | if (f.file->f_op != &drm_syncobj_file_fops) { |
490 | fdput(f); | |
e7cdf5c8 CW |
491 | return -EINVAL; |
492 | } | |
493 | ||
e9083420 | 494 | /* take a reference to put in the idr */ |
fb386243 | 495 | syncobj = f.file->private_data; |
e9083420 DA |
496 | drm_syncobj_get(syncobj); |
497 | ||
498 | idr_preload(GFP_KERNEL); | |
499 | spin_lock(&file_private->syncobj_table_lock); | |
500 | ret = idr_alloc(&file_private->syncobj_idr, syncobj, 1, 0, GFP_NOWAIT); | |
501 | spin_unlock(&file_private->syncobj_table_lock); | |
502 | idr_preload_end(); | |
503 | ||
e7cdf5c8 CW |
504 | if (ret > 0) { |
505 | *handle = ret; | |
506 | ret = 0; | |
507 | } else | |
508 | drm_syncobj_put(syncobj); | |
509 | ||
fb386243 | 510 | fdput(f); |
e7cdf5c8 | 511 | return ret; |
e9083420 DA |
512 | } |
513 | ||
a32c94af VS |
514 | static int drm_syncobj_import_sync_file_fence(struct drm_file *file_private, |
515 | int fd, int handle) | |
3ee45a3b DA |
516 | { |
517 | struct dma_fence *fence = sync_file_get_fence(fd); | |
518 | struct drm_syncobj *syncobj; | |
519 | ||
520 | if (!fence) | |
521 | return -EINVAL; | |
522 | ||
523 | syncobj = drm_syncobj_find(file_private, handle); | |
524 | if (!syncobj) { | |
525 | dma_fence_put(fence); | |
526 | return -ENOENT; | |
527 | } | |
528 | ||
0b258ed1 | 529 | drm_syncobj_replace_fence(syncobj, fence); |
3ee45a3b DA |
530 | dma_fence_put(fence); |
531 | drm_syncobj_put(syncobj); | |
532 | return 0; | |
533 | } | |
534 | ||
a32c94af VS |
535 | static int drm_syncobj_export_sync_file(struct drm_file *file_private, |
536 | int handle, int *p_fd) | |
3ee45a3b DA |
537 | { |
538 | int ret; | |
539 | struct dma_fence *fence; | |
540 | struct sync_file *sync_file; | |
541 | int fd = get_unused_fd_flags(O_CLOEXEC); | |
542 | ||
543 | if (fd < 0) | |
544 | return fd; | |
545 | ||
649fdce2 | 546 | ret = drm_syncobj_find_fence(file_private, handle, 0, 0, &fence); |
3ee45a3b DA |
547 | if (ret) |
548 | goto err_put_fd; | |
549 | ||
550 | sync_file = sync_file_create(fence); | |
551 | ||
552 | dma_fence_put(fence); | |
553 | ||
554 | if (!sync_file) { | |
555 | ret = -EINVAL; | |
556 | goto err_put_fd; | |
557 | } | |
558 | ||
559 | fd_install(fd, sync_file->file); | |
560 | ||
561 | *p_fd = fd; | |
562 | return 0; | |
563 | err_put_fd: | |
564 | put_unused_fd(fd); | |
565 | return ret; | |
566 | } | |
e9083420 DA |
567 | /** |
568 | * drm_syncobj_open - initalizes syncobj file-private structures at devnode open time | |
e9083420 DA |
569 | * @file_private: drm file-private structure to set up |
570 | * | |
571 | * Called at device open time, sets up the structure for handling refcounting | |
572 | * of sync objects. | |
573 | */ | |
574 | void | |
575 | drm_syncobj_open(struct drm_file *file_private) | |
576 | { | |
e86584c5 | 577 | idr_init_base(&file_private->syncobj_idr, 1); |
e9083420 DA |
578 | spin_lock_init(&file_private->syncobj_table_lock); |
579 | } | |
580 | ||
581 | static int | |
582 | drm_syncobj_release_handle(int id, void *ptr, void *data) | |
583 | { | |
584 | struct drm_syncobj *syncobj = ptr; | |
585 | ||
586 | drm_syncobj_put(syncobj); | |
587 | return 0; | |
588 | } | |
589 | ||
590 | /** | |
591 | * drm_syncobj_release - release file-private sync object resources | |
e9083420 DA |
592 | * @file_private: drm file-private structure to clean up |
593 | * | |
594 | * Called at close time when the filp is going away. | |
595 | * | |
596 | * Releases any remaining references on objects by this filp. | |
597 | */ | |
598 | void | |
599 | drm_syncobj_release(struct drm_file *file_private) | |
600 | { | |
601 | idr_for_each(&file_private->syncobj_idr, | |
602 | &drm_syncobj_release_handle, file_private); | |
603 | idr_destroy(&file_private->syncobj_idr); | |
604 | } | |
605 | ||
606 | int | |
607 | drm_syncobj_create_ioctl(struct drm_device *dev, void *data, | |
608 | struct drm_file *file_private) | |
609 | { | |
610 | struct drm_syncobj_create *args = data; | |
611 | ||
612 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) | |
69fdf420 | 613 | return -EOPNOTSUPP; |
e9083420 DA |
614 | |
615 | /* no valid flags yet */ | |
131280a1 | 616 | if (args->flags & ~DRM_SYNCOBJ_CREATE_SIGNALED) |
e9083420 DA |
617 | return -EINVAL; |
618 | ||
1321fd2c MO |
619 | return drm_syncobj_create_as_handle(file_private, |
620 | &args->handle, args->flags); | |
e9083420 DA |
621 | } |
622 | ||
623 | int | |
624 | drm_syncobj_destroy_ioctl(struct drm_device *dev, void *data, | |
625 | struct drm_file *file_private) | |
626 | { | |
627 | struct drm_syncobj_destroy *args = data; | |
628 | ||
629 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) | |
69fdf420 | 630 | return -EOPNOTSUPP; |
e9083420 DA |
631 | |
632 | /* make sure padding is empty */ | |
633 | if (args->pad) | |
634 | return -EINVAL; | |
635 | return drm_syncobj_destroy(file_private, args->handle); | |
636 | } | |
637 | ||
638 | int | |
639 | drm_syncobj_handle_to_fd_ioctl(struct drm_device *dev, void *data, | |
640 | struct drm_file *file_private) | |
641 | { | |
642 | struct drm_syncobj_handle *args = data; | |
643 | ||
644 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) | |
69fdf420 | 645 | return -EOPNOTSUPP; |
e9083420 | 646 | |
3ee45a3b | 647 | if (args->pad) |
e9083420 DA |
648 | return -EINVAL; |
649 | ||
3ee45a3b DA |
650 | if (args->flags != 0 && |
651 | args->flags != DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE) | |
652 | return -EINVAL; | |
653 | ||
654 | if (args->flags & DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE) | |
655 | return drm_syncobj_export_sync_file(file_private, args->handle, | |
656 | &args->fd); | |
657 | ||
e9083420 DA |
658 | return drm_syncobj_handle_to_fd(file_private, args->handle, |
659 | &args->fd); | |
660 | } | |
661 | ||
662 | int | |
663 | drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data, | |
664 | struct drm_file *file_private) | |
665 | { | |
666 | struct drm_syncobj_handle *args = data; | |
667 | ||
668 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) | |
69fdf420 | 669 | return -EOPNOTSUPP; |
e9083420 | 670 | |
3ee45a3b DA |
671 | if (args->pad) |
672 | return -EINVAL; | |
673 | ||
674 | if (args->flags != 0 && | |
675 | args->flags != DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE) | |
e9083420 DA |
676 | return -EINVAL; |
677 | ||
3ee45a3b DA |
678 | if (args->flags & DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE) |
679 | return drm_syncobj_import_sync_file_fence(file_private, | |
680 | args->fd, | |
681 | args->handle); | |
682 | ||
e9083420 DA |
683 | return drm_syncobj_fd_to_handle(file_private, args->fd, |
684 | &args->handle); | |
685 | } | |
5e60a10e | 686 | |
ea569910 CZ |
687 | static int drm_syncobj_transfer_to_timeline(struct drm_file *file_private, |
688 | struct drm_syncobj_transfer *args) | |
689 | { | |
690 | struct drm_syncobj *timeline_syncobj = NULL; | |
691 | struct dma_fence *fence; | |
692 | struct dma_fence_chain *chain; | |
693 | int ret; | |
694 | ||
695 | timeline_syncobj = drm_syncobj_find(file_private, args->dst_handle); | |
696 | if (!timeline_syncobj) { | |
697 | return -ENOENT; | |
698 | } | |
699 | ret = drm_syncobj_find_fence(file_private, args->src_handle, | |
700 | args->src_point, args->flags, | |
701 | &fence); | |
702 | if (ret) | |
703 | goto err; | |
704 | chain = kzalloc(sizeof(struct dma_fence_chain), GFP_KERNEL); | |
705 | if (!chain) { | |
706 | ret = -ENOMEM; | |
707 | goto err1; | |
708 | } | |
709 | drm_syncobj_add_point(timeline_syncobj, chain, fence, args->dst_point); | |
710 | err1: | |
711 | dma_fence_put(fence); | |
712 | err: | |
713 | drm_syncobj_put(timeline_syncobj); | |
714 | ||
715 | return ret; | |
716 | } | |
717 | ||
718 | static int | |
719 | drm_syncobj_transfer_to_binary(struct drm_file *file_private, | |
720 | struct drm_syncobj_transfer *args) | |
721 | { | |
722 | struct drm_syncobj *binary_syncobj = NULL; | |
723 | struct dma_fence *fence; | |
724 | int ret; | |
725 | ||
726 | binary_syncobj = drm_syncobj_find(file_private, args->dst_handle); | |
727 | if (!binary_syncobj) | |
728 | return -ENOENT; | |
729 | ret = drm_syncobj_find_fence(file_private, args->src_handle, | |
730 | args->src_point, args->flags, &fence); | |
731 | if (ret) | |
732 | goto err; | |
733 | drm_syncobj_replace_fence(binary_syncobj, fence); | |
734 | dma_fence_put(fence); | |
735 | err: | |
736 | drm_syncobj_put(binary_syncobj); | |
737 | ||
738 | return ret; | |
739 | } | |
740 | int | |
741 | drm_syncobj_transfer_ioctl(struct drm_device *dev, void *data, | |
742 | struct drm_file *file_private) | |
743 | { | |
744 | struct drm_syncobj_transfer *args = data; | |
745 | int ret; | |
746 | ||
060cebb2 | 747 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE)) |
5ec77638 | 748 | return -EOPNOTSUPP; |
ea569910 CZ |
749 | |
750 | if (args->pad) | |
751 | return -EINVAL; | |
752 | ||
753 | if (args->dst_point) | |
754 | ret = drm_syncobj_transfer_to_timeline(file_private, args); | |
755 | else | |
756 | ret = drm_syncobj_transfer_to_binary(file_private, args); | |
757 | ||
758 | return ret; | |
759 | } | |
760 | ||
e7aca503 JE |
761 | static void syncobj_wait_fence_func(struct dma_fence *fence, |
762 | struct dma_fence_cb *cb) | |
763 | { | |
764 | struct syncobj_wait_entry *wait = | |
765 | container_of(cb, struct syncobj_wait_entry, fence_cb); | |
766 | ||
767 | wake_up_process(wait->task); | |
768 | } | |
769 | ||
770 | static void syncobj_wait_syncobj_func(struct drm_syncobj *syncobj, | |
61a98b1b | 771 | struct syncobj_wait_entry *wait) |
e7aca503 | 772 | { |
01d6c357 CZ |
773 | struct dma_fence *fence; |
774 | ||
131280a1 | 775 | /* This happens inside the syncobj lock */ |
01d6c357 CZ |
776 | fence = rcu_dereference_protected(syncobj->fence, |
777 | lockdep_is_held(&syncobj->lock)); | |
778 | dma_fence_get(fence); | |
779 | if (!fence || dma_fence_chain_find_seqno(&fence, wait->point)) { | |
780 | dma_fence_put(fence); | |
781 | return; | |
782 | } else if (!fence) { | |
783 | wait->fence = dma_fence_get_stub(); | |
784 | } else { | |
785 | wait->fence = fence; | |
786 | } | |
787 | ||
e7aca503 | 788 | wake_up_process(wait->task); |
01d6c357 | 789 | list_del_init(&wait->node); |
e7aca503 JE |
790 | } |
791 | ||
792 | static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, | |
01d6c357 | 793 | void __user *user_points, |
e7aca503 JE |
794 | uint32_t count, |
795 | uint32_t flags, | |
796 | signed long timeout, | |
797 | uint32_t *idx) | |
798 | { | |
799 | struct syncobj_wait_entry *entries; | |
800 | struct dma_fence *fence; | |
01d6c357 | 801 | uint64_t *points; |
e7aca503 JE |
802 | uint32_t signaled_count, i; |
803 | ||
01d6c357 CZ |
804 | points = kmalloc_array(count, sizeof(*points), GFP_KERNEL); |
805 | if (points == NULL) | |
e7aca503 JE |
806 | return -ENOMEM; |
807 | ||
01d6c357 CZ |
808 | if (!user_points) { |
809 | memset(points, 0, count * sizeof(uint64_t)); | |
810 | ||
811 | } else if (copy_from_user(points, user_points, | |
812 | sizeof(uint64_t) * count)) { | |
813 | timeout = -EFAULT; | |
814 | goto err_free_points; | |
815 | } | |
816 | ||
817 | entries = kcalloc(count, sizeof(*entries), GFP_KERNEL); | |
818 | if (!entries) { | |
819 | timeout = -ENOMEM; | |
820 | goto err_free_points; | |
821 | } | |
e7aca503 JE |
822 | /* Walk the list of sync objects and initialize entries. We do |
823 | * this up-front so that we can properly return -EINVAL if there is | |
824 | * a syncobj with a missing fence and then never have the chance of | |
825 | * returning -EINVAL again. | |
826 | */ | |
827 | signaled_count = 0; | |
828 | for (i = 0; i < count; ++i) { | |
01d6c357 CZ |
829 | struct dma_fence *fence; |
830 | ||
e7aca503 | 831 | entries[i].task = current; |
01d6c357 CZ |
832 | entries[i].point = points[i]; |
833 | fence = drm_syncobj_fence_get(syncobjs[i]); | |
834 | if (!fence || dma_fence_chain_find_seqno(&fence, points[i])) { | |
835 | dma_fence_put(fence); | |
e7aca503 JE |
836 | if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) { |
837 | continue; | |
838 | } else { | |
12fec62a | 839 | timeout = -EINVAL; |
e7aca503 JE |
840 | goto cleanup_entries; |
841 | } | |
842 | } | |
843 | ||
01d6c357 CZ |
844 | if (fence) |
845 | entries[i].fence = fence; | |
846 | else | |
847 | entries[i].fence = dma_fence_get_stub(); | |
848 | ||
849 | if ((flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE) || | |
850 | dma_fence_is_signaled(entries[i].fence)) { | |
e7aca503 JE |
851 | if (signaled_count == 0 && idx) |
852 | *idx = i; | |
853 | signaled_count++; | |
854 | } | |
855 | } | |
856 | ||
e7aca503 JE |
857 | if (signaled_count == count || |
858 | (signaled_count > 0 && | |
859 | !(flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL))) | |
860 | goto cleanup_entries; | |
861 | ||
862 | /* There's a very annoying laxness in the dma_fence API here, in | |
863 | * that backends are not required to automatically report when a | |
864 | * fence is signaled prior to fence->ops->enable_signaling() being | |
865 | * called. So here if we fail to match signaled_count, we need to | |
866 | * fallthough and try a 0 timeout wait! | |
867 | */ | |
868 | ||
869 | if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) { | |
61a98b1b CK |
870 | for (i = 0; i < count; ++i) |
871 | drm_syncobj_fence_add_wait(syncobjs[i], &entries[i]); | |
e7aca503 JE |
872 | } |
873 | ||
874 | do { | |
875 | set_current_state(TASK_INTERRUPTIBLE); | |
876 | ||
877 | signaled_count = 0; | |
878 | for (i = 0; i < count; ++i) { | |
879 | fence = entries[i].fence; | |
880 | if (!fence) | |
881 | continue; | |
882 | ||
01d6c357 CZ |
883 | if ((flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE) || |
884 | dma_fence_is_signaled(fence) || | |
e7aca503 JE |
885 | (!entries[i].fence_cb.func && |
886 | dma_fence_add_callback(fence, | |
887 | &entries[i].fence_cb, | |
888 | syncobj_wait_fence_func))) { | |
889 | /* The fence has been signaled */ | |
890 | if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL) { | |
891 | signaled_count++; | |
892 | } else { | |
893 | if (idx) | |
894 | *idx = i; | |
895 | goto done_waiting; | |
896 | } | |
897 | } | |
898 | } | |
899 | ||
900 | if (signaled_count == count) | |
901 | goto done_waiting; | |
902 | ||
903 | if (timeout == 0) { | |
12fec62a | 904 | timeout = -ETIME; |
e7aca503 JE |
905 | goto done_waiting; |
906 | } | |
907 | ||
12fec62a CW |
908 | if (signal_pending(current)) { |
909 | timeout = -ERESTARTSYS; | |
910 | goto done_waiting; | |
911 | } | |
e7aca503 | 912 | |
12fec62a CW |
913 | timeout = schedule_timeout(timeout); |
914 | } while (1); | |
e7aca503 JE |
915 | |
916 | done_waiting: | |
917 | __set_current_state(TASK_RUNNING); | |
918 | ||
919 | cleanup_entries: | |
920 | for (i = 0; i < count; ++i) { | |
61a98b1b | 921 | drm_syncobj_remove_wait(syncobjs[i], &entries[i]); |
e7aca503 JE |
922 | if (entries[i].fence_cb.func) |
923 | dma_fence_remove_callback(entries[i].fence, | |
924 | &entries[i].fence_cb); | |
925 | dma_fence_put(entries[i].fence); | |
926 | } | |
927 | kfree(entries); | |
928 | ||
01d6c357 CZ |
929 | err_free_points: |
930 | kfree(points); | |
931 | ||
12fec62a | 932 | return timeout; |
e7aca503 JE |
933 | } |
934 | ||
5e60a10e DA |
935 | /** |
936 | * drm_timeout_abs_to_jiffies - calculate jiffies timeout from absolute value | |
937 | * | |
938 | * @timeout_nsec: timeout nsec component in ns, 0 for poll | |
939 | * | |
940 | * Calculate the timeout in jiffies from an absolute time in sec/nsec. | |
941 | */ | |
877b3729 | 942 | signed long drm_timeout_abs_to_jiffies(int64_t timeout_nsec) |
5e60a10e DA |
943 | { |
944 | ktime_t abs_timeout, now; | |
945 | u64 timeout_ns, timeout_jiffies64; | |
946 | ||
947 | /* make 0 timeout means poll - absolute 0 doesn't seem valid */ | |
948 | if (timeout_nsec == 0) | |
949 | return 0; | |
950 | ||
951 | abs_timeout = ns_to_ktime(timeout_nsec); | |
952 | now = ktime_get(); | |
953 | ||
954 | if (!ktime_after(abs_timeout, now)) | |
955 | return 0; | |
956 | ||
957 | timeout_ns = ktime_to_ns(ktime_sub(abs_timeout, now)); | |
958 | ||
959 | timeout_jiffies64 = nsecs_to_jiffies64(timeout_ns); | |
960 | /* clamp timeout to avoid infinite timeout */ | |
961 | if (timeout_jiffies64 >= MAX_SCHEDULE_TIMEOUT - 1) | |
962 | return MAX_SCHEDULE_TIMEOUT - 1; | |
963 | ||
964 | return timeout_jiffies64 + 1; | |
965 | } | |
877b3729 | 966 | EXPORT_SYMBOL(drm_timeout_abs_to_jiffies); |
5e60a10e | 967 | |
e7aca503 JE |
968 | static int drm_syncobj_array_wait(struct drm_device *dev, |
969 | struct drm_file *file_private, | |
970 | struct drm_syncobj_wait *wait, | |
01d6c357 CZ |
971 | struct drm_syncobj_timeline_wait *timeline_wait, |
972 | struct drm_syncobj **syncobjs, bool timeline) | |
5e60a10e | 973 | { |
01d6c357 | 974 | signed long timeout = 0; |
5e60a10e DA |
975 | uint32_t first = ~0; |
976 | ||
01d6c357 CZ |
977 | if (!timeline) { |
978 | timeout = drm_timeout_abs_to_jiffies(wait->timeout_nsec); | |
979 | timeout = drm_syncobj_array_wait_timeout(syncobjs, | |
980 | NULL, | |
981 | wait->count_handles, | |
982 | wait->flags, | |
983 | timeout, &first); | |
984 | if (timeout < 0) | |
985 | return timeout; | |
986 | wait->first_signaled = first; | |
987 | } else { | |
988 | timeout = drm_timeout_abs_to_jiffies(timeline_wait->timeout_nsec); | |
989 | timeout = drm_syncobj_array_wait_timeout(syncobjs, | |
990 | u64_to_user_ptr(timeline_wait->points), | |
991 | timeline_wait->count_handles, | |
992 | timeline_wait->flags, | |
993 | timeout, &first); | |
994 | if (timeout < 0) | |
995 | return timeout; | |
996 | timeline_wait->first_signaled = first; | |
997 | } | |
5e60a10e DA |
998 | return 0; |
999 | } | |
1000 | ||
3e6fb72d | 1001 | static int drm_syncobj_array_find(struct drm_file *file_private, |
9e554462 VS |
1002 | void __user *user_handles, |
1003 | uint32_t count_handles, | |
3e6fb72d | 1004 | struct drm_syncobj ***syncobjs_out) |
5e60a10e | 1005 | { |
3e6fb72d | 1006 | uint32_t i, *handles; |
e7aca503 | 1007 | struct drm_syncobj **syncobjs; |
3e6fb72d | 1008 | int ret; |
5e60a10e | 1009 | |
3e6fb72d | 1010 | handles = kmalloc_array(count_handles, sizeof(*handles), GFP_KERNEL); |
5e60a10e DA |
1011 | if (handles == NULL) |
1012 | return -ENOMEM; | |
1013 | ||
3e6fb72d JE |
1014 | if (copy_from_user(handles, user_handles, |
1015 | sizeof(uint32_t) * count_handles)) { | |
5e60a10e DA |
1016 | ret = -EFAULT; |
1017 | goto err_free_handles; | |
1018 | } | |
1019 | ||
3e6fb72d JE |
1020 | syncobjs = kmalloc_array(count_handles, sizeof(*syncobjs), GFP_KERNEL); |
1021 | if (syncobjs == NULL) { | |
5e60a10e DA |
1022 | ret = -ENOMEM; |
1023 | goto err_free_handles; | |
1024 | } | |
1025 | ||
3e6fb72d | 1026 | for (i = 0; i < count_handles; i++) { |
e7aca503 JE |
1027 | syncobjs[i] = drm_syncobj_find(file_private, handles[i]); |
1028 | if (!syncobjs[i]) { | |
1029 | ret = -ENOENT; | |
3e6fb72d | 1030 | goto err_put_syncobjs; |
e7aca503 | 1031 | } |
5e60a10e DA |
1032 | } |
1033 | ||
3e6fb72d JE |
1034 | kfree(handles); |
1035 | *syncobjs_out = syncobjs; | |
1036 | return 0; | |
5e60a10e | 1037 | |
3e6fb72d | 1038 | err_put_syncobjs: |
e7aca503 JE |
1039 | while (i-- > 0) |
1040 | drm_syncobj_put(syncobjs[i]); | |
1041 | kfree(syncobjs); | |
5e60a10e DA |
1042 | err_free_handles: |
1043 | kfree(handles); | |
1044 | ||
1045 | return ret; | |
1046 | } | |
3e6fb72d JE |
1047 | |
1048 | static void drm_syncobj_array_free(struct drm_syncobj **syncobjs, | |
1049 | uint32_t count) | |
1050 | { | |
1051 | uint32_t i; | |
1052 | for (i = 0; i < count; i++) | |
1053 | drm_syncobj_put(syncobjs[i]); | |
1054 | kfree(syncobjs); | |
1055 | } | |
1056 | ||
1057 | int | |
1058 | drm_syncobj_wait_ioctl(struct drm_device *dev, void *data, | |
1059 | struct drm_file *file_private) | |
1060 | { | |
1061 | struct drm_syncobj_wait *args = data; | |
1062 | struct drm_syncobj **syncobjs; | |
1063 | int ret = 0; | |
1064 | ||
1065 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) | |
69fdf420 | 1066 | return -EOPNOTSUPP; |
3e6fb72d JE |
1067 | |
1068 | if (args->flags & ~(DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL | | |
1069 | DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT)) | |
1070 | return -EINVAL; | |
1071 | ||
1072 | if (args->count_handles == 0) | |
1073 | return -EINVAL; | |
1074 | ||
1075 | ret = drm_syncobj_array_find(file_private, | |
1076 | u64_to_user_ptr(args->handles), | |
1077 | args->count_handles, | |
1078 | &syncobjs); | |
1079 | if (ret < 0) | |
1080 | return ret; | |
1081 | ||
1082 | ret = drm_syncobj_array_wait(dev, file_private, | |
01d6c357 | 1083 | args, NULL, syncobjs, false); |
3e6fb72d JE |
1084 | |
1085 | drm_syncobj_array_free(syncobjs, args->count_handles); | |
1086 | ||
1087 | return ret; | |
1088 | } | |
aa4035d2 | 1089 | |
01d6c357 CZ |
1090 | int |
1091 | drm_syncobj_timeline_wait_ioctl(struct drm_device *dev, void *data, | |
1092 | struct drm_file *file_private) | |
1093 | { | |
1094 | struct drm_syncobj_timeline_wait *args = data; | |
1095 | struct drm_syncobj **syncobjs; | |
1096 | int ret = 0; | |
1097 | ||
060cebb2 | 1098 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE)) |
5ec77638 | 1099 | return -EOPNOTSUPP; |
01d6c357 CZ |
1100 | |
1101 | if (args->flags & ~(DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL | | |
1102 | DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT | | |
1103 | DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE)) | |
1104 | return -EINVAL; | |
1105 | ||
1106 | if (args->count_handles == 0) | |
1107 | return -EINVAL; | |
1108 | ||
1109 | ret = drm_syncobj_array_find(file_private, | |
1110 | u64_to_user_ptr(args->handles), | |
1111 | args->count_handles, | |
1112 | &syncobjs); | |
1113 | if (ret < 0) | |
1114 | return ret; | |
1115 | ||
1116 | ret = drm_syncobj_array_wait(dev, file_private, | |
1117 | NULL, args, syncobjs, true); | |
3e6fb72d JE |
1118 | |
1119 | drm_syncobj_array_free(syncobjs, args->count_handles); | |
1120 | ||
1121 | return ret; | |
1122 | } | |
aa4035d2 | 1123 | |
01d6c357 | 1124 | |
aa4035d2 JE |
1125 | int |
1126 | drm_syncobj_reset_ioctl(struct drm_device *dev, void *data, | |
1127 | struct drm_file *file_private) | |
1128 | { | |
1129 | struct drm_syncobj_array *args = data; | |
1130 | struct drm_syncobj **syncobjs; | |
1131 | uint32_t i; | |
1132 | int ret; | |
1133 | ||
1134 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) | |
69fdf420 | 1135 | return -EOPNOTSUPP; |
aa4035d2 JE |
1136 | |
1137 | if (args->pad != 0) | |
1138 | return -EINVAL; | |
1139 | ||
1140 | if (args->count_handles == 0) | |
1141 | return -EINVAL; | |
1142 | ||
1143 | ret = drm_syncobj_array_find(file_private, | |
1144 | u64_to_user_ptr(args->handles), | |
1145 | args->count_handles, | |
1146 | &syncobjs); | |
1147 | if (ret < 0) | |
1148 | return ret; | |
1149 | ||
131280a1 | 1150 | for (i = 0; i < args->count_handles; i++) |
0b258ed1 | 1151 | drm_syncobj_replace_fence(syncobjs[i], NULL); |
131280a1 | 1152 | |
aa4035d2 JE |
1153 | drm_syncobj_array_free(syncobjs, args->count_handles); |
1154 | ||
131280a1 | 1155 | return 0; |
aa4035d2 | 1156 | } |
ffa9443f JE |
1157 | |
1158 | int | |
1159 | drm_syncobj_signal_ioctl(struct drm_device *dev, void *data, | |
1160 | struct drm_file *file_private) | |
1161 | { | |
1162 | struct drm_syncobj_array *args = data; | |
1163 | struct drm_syncobj **syncobjs; | |
1164 | uint32_t i; | |
1165 | int ret; | |
1166 | ||
1167 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) | |
69fdf420 | 1168 | return -EOPNOTSUPP; |
ffa9443f JE |
1169 | |
1170 | if (args->pad != 0) | |
1171 | return -EINVAL; | |
1172 | ||
1173 | if (args->count_handles == 0) | |
1174 | return -EINVAL; | |
1175 | ||
1176 | ret = drm_syncobj_array_find(file_private, | |
1177 | u64_to_user_ptr(args->handles), | |
1178 | args->count_handles, | |
1179 | &syncobjs); | |
1180 | if (ret < 0) | |
1181 | return ret; | |
1182 | ||
86bbd89d CK |
1183 | for (i = 0; i < args->count_handles; i++) |
1184 | drm_syncobj_assign_null_handle(syncobjs[i]); | |
ffa9443f JE |
1185 | |
1186 | drm_syncobj_array_free(syncobjs, args->count_handles); | |
1187 | ||
1188 | return ret; | |
1189 | } | |
27b575a9 | 1190 | |
50d1ebef CZ |
1191 | int |
1192 | drm_syncobj_timeline_signal_ioctl(struct drm_device *dev, void *data, | |
1193 | struct drm_file *file_private) | |
1194 | { | |
1195 | struct drm_syncobj_timeline_array *args = data; | |
1196 | struct drm_syncobj **syncobjs; | |
1197 | struct dma_fence_chain **chains; | |
1198 | uint64_t *points; | |
1199 | uint32_t i, j; | |
1200 | int ret; | |
1201 | ||
060cebb2 | 1202 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE)) |
50d1ebef CZ |
1203 | return -EOPNOTSUPP; |
1204 | ||
1205 | if (args->pad != 0) | |
1206 | return -EINVAL; | |
1207 | ||
1208 | if (args->count_handles == 0) | |
1209 | return -EINVAL; | |
1210 | ||
1211 | ret = drm_syncobj_array_find(file_private, | |
1212 | u64_to_user_ptr(args->handles), | |
1213 | args->count_handles, | |
1214 | &syncobjs); | |
1215 | if (ret < 0) | |
1216 | return ret; | |
1217 | ||
1218 | points = kmalloc_array(args->count_handles, sizeof(*points), | |
1219 | GFP_KERNEL); | |
1220 | if (!points) { | |
1221 | ret = -ENOMEM; | |
1222 | goto out; | |
1223 | } | |
1224 | if (!u64_to_user_ptr(args->points)) { | |
1225 | memset(points, 0, args->count_handles * sizeof(uint64_t)); | |
1226 | } else if (copy_from_user(points, u64_to_user_ptr(args->points), | |
1227 | sizeof(uint64_t) * args->count_handles)) { | |
1228 | ret = -EFAULT; | |
1229 | goto err_points; | |
1230 | } | |
1231 | ||
1232 | chains = kmalloc_array(args->count_handles, sizeof(void *), GFP_KERNEL); | |
1233 | if (!chains) { | |
1234 | ret = -ENOMEM; | |
1235 | goto err_points; | |
1236 | } | |
1237 | for (i = 0; i < args->count_handles; i++) { | |
1238 | chains[i] = kzalloc(sizeof(struct dma_fence_chain), GFP_KERNEL); | |
1239 | if (!chains[i]) { | |
1240 | for (j = 0; j < i; j++) | |
1241 | kfree(chains[j]); | |
1242 | ret = -ENOMEM; | |
1243 | goto err_chains; | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | for (i = 0; i < args->count_handles; i++) { | |
1248 | struct dma_fence *fence = dma_fence_get_stub(); | |
1249 | ||
1250 | drm_syncobj_add_point(syncobjs[i], chains[i], | |
1251 | fence, points[i]); | |
1252 | dma_fence_put(fence); | |
1253 | } | |
1254 | err_chains: | |
1255 | kfree(chains); | |
1256 | err_points: | |
1257 | kfree(points); | |
1258 | out: | |
1259 | drm_syncobj_array_free(syncobjs, args->count_handles); | |
1260 | ||
1261 | return ret; | |
1262 | } | |
1263 | ||
27b575a9 CZ |
1264 | int drm_syncobj_query_ioctl(struct drm_device *dev, void *data, |
1265 | struct drm_file *file_private) | |
1266 | { | |
1267 | struct drm_syncobj_timeline_array *args = data; | |
1268 | struct drm_syncobj **syncobjs; | |
1269 | uint64_t __user *points = u64_to_user_ptr(args->points); | |
1270 | uint32_t i; | |
1271 | int ret; | |
1272 | ||
060cebb2 LL |
1273 | if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE)) |
1274 | return -EOPNOTSUPP; | |
27b575a9 CZ |
1275 | |
1276 | if (args->pad != 0) | |
1277 | return -EINVAL; | |
1278 | ||
1279 | if (args->count_handles == 0) | |
1280 | return -EINVAL; | |
1281 | ||
1282 | ret = drm_syncobj_array_find(file_private, | |
1283 | u64_to_user_ptr(args->handles), | |
1284 | args->count_handles, | |
1285 | &syncobjs); | |
1286 | if (ret < 0) | |
1287 | return ret; | |
1288 | ||
1289 | for (i = 0; i < args->count_handles; i++) { | |
1290 | struct dma_fence_chain *chain; | |
1291 | struct dma_fence *fence; | |
1292 | uint64_t point; | |
1293 | ||
1294 | fence = drm_syncobj_fence_get(syncobjs[i]); | |
1295 | chain = to_dma_fence_chain(fence); | |
1296 | if (chain) { | |
1297 | struct dma_fence *iter, *last_signaled = NULL; | |
1298 | ||
1299 | dma_fence_chain_for_each(iter, fence) { | |
1300 | if (!iter) | |
1301 | break; | |
1302 | dma_fence_put(last_signaled); | |
1303 | last_signaled = dma_fence_get(iter); | |
1304 | if (!to_dma_fence_chain(last_signaled)->prev_seqno) | |
1305 | /* It is most likely that timeline has | |
1306 | * unorder points. */ | |
1307 | break; | |
1308 | } | |
1309 | point = dma_fence_is_signaled(last_signaled) ? | |
1310 | last_signaled->seqno : | |
1311 | to_dma_fence_chain(last_signaled)->prev_seqno; | |
1312 | dma_fence_put(last_signaled); | |
1313 | } else { | |
1314 | point = 0; | |
1315 | } | |
1316 | ret = copy_to_user(&points[i], &point, sizeof(uint64_t)); | |
1317 | ret = ret ? -EFAULT : 0; | |
1318 | if (ret) | |
1319 | break; | |
1320 | } | |
1321 | drm_syncobj_array_free(syncobjs, args->count_handles); | |
1322 | ||
1323 | return ret; | |
1324 | } |