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