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1 | /************************************************************************** |
2 | * | |
3 | * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | ||
28 | #include "drmP.h" | |
29 | #include "vmwgfx_drv.h" | |
30 | ||
31 | #define VMW_FENCE_WRAP (1 << 31) | |
32 | ||
33 | struct vmw_fence_manager { | |
34 | int num_fence_objects; | |
35 | struct vmw_private *dev_priv; | |
36 | spinlock_t lock; | |
37 | u32 next_seqno; | |
38 | struct list_head fence_list; | |
39 | struct work_struct work; | |
40 | u32 user_fence_size; | |
41 | u32 fence_size; | |
42 | bool fifo_down; | |
43 | struct list_head cleanup_list; | |
44 | }; | |
45 | ||
46 | struct vmw_user_fence { | |
47 | struct ttm_base_object base; | |
48 | struct vmw_fence_obj fence; | |
49 | }; | |
50 | ||
51 | /** | |
52 | * vmw_fence_destroy_locked | |
53 | * | |
54 | */ | |
55 | ||
56 | static void vmw_fence_obj_destroy_locked(struct kref *kref) | |
57 | { | |
58 | struct vmw_fence_obj *fence = | |
59 | container_of(kref, struct vmw_fence_obj, kref); | |
60 | ||
61 | struct vmw_fence_manager *fman = fence->fman; | |
62 | unsigned int num_fences; | |
63 | ||
64 | list_del_init(&fence->head); | |
65 | num_fences = --fman->num_fence_objects; | |
66 | spin_unlock_irq(&fman->lock); | |
67 | if (fence->destroy) | |
68 | fence->destroy(fence); | |
69 | else | |
70 | kfree(fence); | |
71 | ||
72 | spin_lock_irq(&fman->lock); | |
73 | } | |
74 | ||
75 | ||
76 | /** | |
77 | * Execute signal actions on fences recently signaled. | |
78 | * This is done from a workqueue so we don't have to execute | |
79 | * signal actions from atomic context. | |
80 | */ | |
81 | ||
82 | static void vmw_fence_work_func(struct work_struct *work) | |
83 | { | |
84 | struct vmw_fence_manager *fman = | |
85 | container_of(work, struct vmw_fence_manager, work); | |
86 | struct list_head list; | |
87 | struct vmw_fence_action *action, *next_action; | |
88 | ||
89 | do { | |
90 | INIT_LIST_HEAD(&list); | |
91 | spin_lock_irq(&fman->lock); | |
92 | list_splice_init(&fman->cleanup_list, &list); | |
93 | spin_unlock_irq(&fman->lock); | |
94 | ||
95 | if (list_empty(&list)) | |
96 | return; | |
97 | ||
98 | /* | |
99 | * At this point, only we should be able to manipulate the | |
100 | * list heads of the actions we have on the private list. | |
101 | */ | |
102 | ||
103 | list_for_each_entry_safe(action, next_action, &list, head) { | |
104 | list_del_init(&action->head); | |
105 | action->cleanup(action); | |
106 | } | |
107 | } while (1); | |
108 | } | |
109 | ||
110 | struct vmw_fence_manager *vmw_fence_manager_init(struct vmw_private *dev_priv) | |
111 | { | |
112 | struct vmw_fence_manager *fman = kzalloc(sizeof(*fman), GFP_KERNEL); | |
113 | ||
114 | if (unlikely(fman == NULL)) | |
115 | return NULL; | |
116 | ||
117 | fman->dev_priv = dev_priv; | |
118 | spin_lock_init(&fman->lock); | |
119 | INIT_LIST_HEAD(&fman->fence_list); | |
120 | INIT_LIST_HEAD(&fman->cleanup_list); | |
121 | INIT_WORK(&fman->work, &vmw_fence_work_func); | |
122 | fman->fifo_down = true; | |
123 | fman->user_fence_size = ttm_round_pot(sizeof(struct vmw_user_fence)); | |
124 | fman->fence_size = ttm_round_pot(sizeof(struct vmw_fence_obj)); | |
125 | ||
126 | return fman; | |
127 | } | |
128 | ||
129 | void vmw_fence_manager_takedown(struct vmw_fence_manager *fman) | |
130 | { | |
131 | unsigned long irq_flags; | |
132 | bool lists_empty; | |
133 | ||
134 | (void) cancel_work_sync(&fman->work); | |
135 | ||
136 | spin_lock_irqsave(&fman->lock, irq_flags); | |
137 | lists_empty = list_empty(&fman->fence_list) && | |
138 | list_empty(&fman->cleanup_list); | |
139 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
140 | ||
141 | BUG_ON(!lists_empty); | |
142 | kfree(fman); | |
143 | } | |
144 | ||
145 | static int vmw_fence_obj_init(struct vmw_fence_manager *fman, | |
146 | struct vmw_fence_obj *fence, | |
147 | u32 seqno, | |
148 | uint32_t mask, | |
149 | void (*destroy) (struct vmw_fence_obj *fence)) | |
150 | { | |
151 | unsigned long irq_flags; | |
152 | unsigned int num_fences; | |
153 | int ret = 0; | |
154 | ||
155 | fence->seqno = seqno; | |
156 | INIT_LIST_HEAD(&fence->seq_passed_actions); | |
157 | fence->fman = fman; | |
158 | fence->signaled = 0; | |
159 | fence->signal_mask = mask; | |
160 | kref_init(&fence->kref); | |
161 | fence->destroy = destroy; | |
162 | init_waitqueue_head(&fence->queue); | |
163 | ||
164 | spin_lock_irqsave(&fman->lock, irq_flags); | |
165 | if (unlikely(fman->fifo_down)) { | |
166 | ret = -EBUSY; | |
167 | goto out_unlock; | |
168 | } | |
169 | list_add_tail(&fence->head, &fman->fence_list); | |
170 | num_fences = ++fman->num_fence_objects; | |
171 | ||
172 | out_unlock: | |
173 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
174 | return ret; | |
175 | ||
176 | } | |
177 | ||
178 | struct vmw_fence_obj *vmw_fence_obj_reference(struct vmw_fence_obj *fence) | |
179 | { | |
e93daed8 TH |
180 | if (unlikely(fence == NULL)) |
181 | return NULL; | |
182 | ||
ae2a1040 TH |
183 | kref_get(&fence->kref); |
184 | return fence; | |
185 | } | |
186 | ||
187 | /** | |
188 | * vmw_fence_obj_unreference | |
189 | * | |
190 | * Note that this function may not be entered with disabled irqs since | |
191 | * it may re-enable them in the destroy function. | |
192 | * | |
193 | */ | |
194 | void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p) | |
195 | { | |
196 | struct vmw_fence_obj *fence = *fence_p; | |
e93daed8 TH |
197 | struct vmw_fence_manager *fman; |
198 | ||
199 | if (unlikely(fence == NULL)) | |
200 | return; | |
ae2a1040 | 201 | |
e93daed8 | 202 | fman = fence->fman; |
ae2a1040 TH |
203 | *fence_p = NULL; |
204 | spin_lock_irq(&fman->lock); | |
205 | BUG_ON(atomic_read(&fence->kref.refcount) == 0); | |
206 | kref_put(&fence->kref, vmw_fence_obj_destroy_locked); | |
207 | spin_unlock_irq(&fman->lock); | |
208 | } | |
209 | ||
210 | void vmw_fences_perform_actions(struct vmw_fence_manager *fman, | |
211 | struct list_head *list) | |
212 | { | |
213 | struct vmw_fence_action *action, *next_action; | |
214 | ||
215 | list_for_each_entry_safe(action, next_action, list, head) { | |
216 | list_del_init(&action->head); | |
217 | if (action->seq_passed != NULL) | |
218 | action->seq_passed(action); | |
219 | ||
220 | /* | |
221 | * Add the cleanup action to the cleanup list so that | |
222 | * it will be performed by a worker task. | |
223 | */ | |
224 | ||
225 | if (action->cleanup != NULL) | |
226 | list_add_tail(&action->head, &fman->cleanup_list); | |
227 | } | |
228 | } | |
229 | ||
230 | void vmw_fences_update(struct vmw_fence_manager *fman, u32 seqno) | |
231 | { | |
232 | unsigned long flags; | |
233 | struct vmw_fence_obj *fence, *next_fence; | |
234 | struct list_head action_list; | |
235 | ||
236 | spin_lock_irqsave(&fman->lock, flags); | |
237 | list_for_each_entry_safe(fence, next_fence, &fman->fence_list, head) { | |
238 | if (seqno - fence->seqno < VMW_FENCE_WRAP) { | |
239 | list_del_init(&fence->head); | |
240 | fence->signaled |= DRM_VMW_FENCE_FLAG_EXEC; | |
241 | INIT_LIST_HEAD(&action_list); | |
242 | list_splice_init(&fence->seq_passed_actions, | |
243 | &action_list); | |
244 | vmw_fences_perform_actions(fman, &action_list); | |
245 | wake_up_all(&fence->queue); | |
246 | } | |
247 | ||
248 | } | |
249 | if (!list_empty(&fman->cleanup_list)) | |
250 | (void) schedule_work(&fman->work); | |
251 | spin_unlock_irqrestore(&fman->lock, flags); | |
252 | } | |
253 | ||
254 | ||
255 | bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence, | |
256 | uint32_t flags) | |
257 | { | |
258 | struct vmw_fence_manager *fman = fence->fman; | |
259 | unsigned long irq_flags; | |
260 | uint32_t signaled; | |
261 | ||
262 | spin_lock_irqsave(&fman->lock, irq_flags); | |
263 | signaled = fence->signaled; | |
264 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
265 | ||
266 | flags &= fence->signal_mask; | |
267 | if ((signaled & flags) == flags) | |
268 | return 1; | |
269 | ||
270 | if ((signaled & DRM_VMW_FENCE_FLAG_EXEC) == 0) { | |
271 | struct vmw_private *dev_priv = fman->dev_priv; | |
272 | __le32 __iomem *fifo_mem = dev_priv->mmio_virt; | |
273 | u32 seqno; | |
274 | ||
275 | seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE); | |
276 | vmw_fences_update(fman, seqno); | |
277 | } | |
278 | ||
279 | spin_lock_irqsave(&fman->lock, irq_flags); | |
280 | signaled = fence->signaled; | |
281 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
282 | ||
283 | return ((signaled & flags) == flags); | |
284 | } | |
285 | ||
286 | int vmw_fence_obj_wait(struct vmw_fence_obj *fence, | |
287 | uint32_t flags, bool lazy, | |
288 | bool interruptible, unsigned long timeout) | |
289 | { | |
290 | struct vmw_private *dev_priv = fence->fman->dev_priv; | |
291 | long ret; | |
292 | ||
293 | if (likely(vmw_fence_obj_signaled(fence, flags))) | |
294 | return 0; | |
295 | ||
296 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); | |
297 | vmw_seqno_waiter_add(dev_priv); | |
298 | ||
299 | if (interruptible) | |
300 | ret = wait_event_interruptible_timeout | |
301 | (fence->queue, | |
302 | vmw_fence_obj_signaled(fence, flags), | |
303 | timeout); | |
304 | else | |
305 | ret = wait_event_timeout | |
306 | (fence->queue, | |
307 | vmw_fence_obj_signaled(fence, flags), | |
308 | timeout); | |
309 | ||
310 | vmw_seqno_waiter_remove(dev_priv); | |
311 | ||
312 | if (unlikely(ret == 0)) | |
313 | ret = -EBUSY; | |
314 | else if (likely(ret > 0)) | |
315 | ret = 0; | |
316 | ||
317 | return ret; | |
318 | } | |
319 | ||
320 | void vmw_fence_obj_flush(struct vmw_fence_obj *fence) | |
321 | { | |
322 | struct vmw_private *dev_priv = fence->fman->dev_priv; | |
323 | ||
324 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); | |
325 | } | |
326 | ||
327 | static void vmw_fence_destroy(struct vmw_fence_obj *fence) | |
328 | { | |
329 | struct vmw_fence_manager *fman = fence->fman; | |
330 | ||
331 | kfree(fence); | |
332 | /* | |
333 | * Free kernel space accounting. | |
334 | */ | |
335 | ttm_mem_global_free(vmw_mem_glob(fman->dev_priv), | |
336 | fman->fence_size); | |
337 | } | |
338 | ||
339 | int vmw_fence_create(struct vmw_fence_manager *fman, | |
340 | uint32_t seqno, | |
341 | uint32_t mask, | |
342 | struct vmw_fence_obj **p_fence) | |
343 | { | |
344 | struct ttm_mem_global *mem_glob = vmw_mem_glob(fman->dev_priv); | |
345 | struct vmw_fence_obj *fence; | |
346 | int ret; | |
347 | ||
348 | ret = ttm_mem_global_alloc(mem_glob, fman->fence_size, | |
349 | false, false); | |
350 | if (unlikely(ret != 0)) | |
351 | return ret; | |
352 | ||
353 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); | |
354 | if (unlikely(fence == NULL)) { | |
355 | ret = -ENOMEM; | |
356 | goto out_no_object; | |
357 | } | |
358 | ||
359 | ret = vmw_fence_obj_init(fman, fence, seqno, mask, | |
360 | vmw_fence_destroy); | |
361 | if (unlikely(ret != 0)) | |
362 | goto out_err_init; | |
363 | ||
364 | *p_fence = fence; | |
365 | return 0; | |
366 | ||
367 | out_err_init: | |
368 | kfree(fence); | |
369 | out_no_object: | |
370 | ttm_mem_global_free(mem_glob, fman->fence_size); | |
371 | return ret; | |
372 | } | |
373 | ||
374 | ||
375 | static void vmw_user_fence_destroy(struct vmw_fence_obj *fence) | |
376 | { | |
377 | struct vmw_user_fence *ufence = | |
378 | container_of(fence, struct vmw_user_fence, fence); | |
379 | struct vmw_fence_manager *fman = fence->fman; | |
380 | ||
381 | kfree(ufence); | |
382 | /* | |
383 | * Free kernel space accounting. | |
384 | */ | |
385 | ttm_mem_global_free(vmw_mem_glob(fman->dev_priv), | |
386 | fman->user_fence_size); | |
387 | } | |
388 | ||
389 | static void vmw_user_fence_base_release(struct ttm_base_object **p_base) | |
390 | { | |
391 | struct ttm_base_object *base = *p_base; | |
392 | struct vmw_user_fence *ufence = | |
393 | container_of(base, struct vmw_user_fence, base); | |
394 | struct vmw_fence_obj *fence = &ufence->fence; | |
395 | ||
396 | *p_base = NULL; | |
397 | vmw_fence_obj_unreference(&fence); | |
398 | } | |
399 | ||
400 | int vmw_user_fence_create(struct drm_file *file_priv, | |
401 | struct vmw_fence_manager *fman, | |
402 | uint32_t seqno, | |
403 | uint32_t mask, | |
404 | struct vmw_fence_obj **p_fence, | |
405 | uint32_t *p_handle) | |
406 | { | |
407 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
408 | struct vmw_user_fence *ufence; | |
409 | struct vmw_fence_obj *tmp; | |
410 | struct ttm_mem_global *mem_glob = vmw_mem_glob(fman->dev_priv); | |
411 | int ret; | |
412 | ||
413 | /* | |
414 | * Kernel memory space accounting, since this object may | |
415 | * be created by a user-space request. | |
416 | */ | |
417 | ||
418 | ret = ttm_mem_global_alloc(mem_glob, fman->user_fence_size, | |
419 | false, false); | |
420 | if (unlikely(ret != 0)) | |
421 | return ret; | |
422 | ||
423 | ufence = kzalloc(sizeof(*ufence), GFP_KERNEL); | |
424 | if (unlikely(ufence == NULL)) { | |
425 | ret = -ENOMEM; | |
426 | goto out_no_object; | |
427 | } | |
428 | ||
429 | ret = vmw_fence_obj_init(fman, &ufence->fence, seqno, | |
430 | mask, vmw_user_fence_destroy); | |
431 | if (unlikely(ret != 0)) { | |
432 | kfree(ufence); | |
433 | goto out_no_object; | |
434 | } | |
435 | ||
436 | /* | |
437 | * The base object holds a reference which is freed in | |
438 | * vmw_user_fence_base_release. | |
439 | */ | |
440 | tmp = vmw_fence_obj_reference(&ufence->fence); | |
441 | ret = ttm_base_object_init(tfile, &ufence->base, false, | |
442 | VMW_RES_FENCE, | |
443 | &vmw_user_fence_base_release, NULL); | |
444 | ||
445 | ||
446 | if (unlikely(ret != 0)) { | |
447 | /* | |
448 | * Free the base object's reference | |
449 | */ | |
450 | vmw_fence_obj_unreference(&tmp); | |
451 | goto out_err; | |
452 | } | |
453 | ||
454 | *p_fence = &ufence->fence; | |
455 | *p_handle = ufence->base.hash.key; | |
456 | ||
457 | return 0; | |
458 | out_err: | |
459 | tmp = &ufence->fence; | |
460 | vmw_fence_obj_unreference(&tmp); | |
461 | out_no_object: | |
462 | ttm_mem_global_free(mem_glob, fman->user_fence_size); | |
463 | return ret; | |
464 | } | |
465 | ||
466 | ||
467 | /** | |
468 | * vmw_fence_fifo_down - signal all unsignaled fence objects. | |
469 | */ | |
470 | ||
471 | void vmw_fence_fifo_down(struct vmw_fence_manager *fman) | |
472 | { | |
473 | unsigned long irq_flags; | |
474 | struct list_head action_list; | |
475 | int ret; | |
476 | ||
477 | /* | |
478 | * The list may be altered while we traverse it, so always | |
479 | * restart when we've released the fman->lock. | |
480 | */ | |
481 | ||
482 | spin_lock_irqsave(&fman->lock, irq_flags); | |
483 | fman->fifo_down = true; | |
484 | while (!list_empty(&fman->fence_list)) { | |
485 | struct vmw_fence_obj *fence = | |
486 | list_entry(fman->fence_list.prev, struct vmw_fence_obj, | |
487 | head); | |
488 | kref_get(&fence->kref); | |
489 | spin_unlock_irq(&fman->lock); | |
490 | ||
491 | ret = vmw_fence_obj_wait(fence, fence->signal_mask, | |
492 | false, false, | |
493 | VMW_FENCE_WAIT_TIMEOUT); | |
494 | ||
495 | if (unlikely(ret != 0)) { | |
496 | list_del_init(&fence->head); | |
497 | fence->signaled |= DRM_VMW_FENCE_FLAG_EXEC; | |
498 | INIT_LIST_HEAD(&action_list); | |
499 | list_splice_init(&fence->seq_passed_actions, | |
500 | &action_list); | |
501 | vmw_fences_perform_actions(fman, &action_list); | |
502 | wake_up_all(&fence->queue); | |
503 | } | |
504 | ||
505 | spin_lock_irq(&fman->lock); | |
506 | ||
507 | BUG_ON(!list_empty(&fence->head)); | |
508 | kref_put(&fence->kref, vmw_fence_obj_destroy_locked); | |
509 | } | |
510 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
511 | } | |
512 | ||
513 | void vmw_fence_fifo_up(struct vmw_fence_manager *fman) | |
514 | { | |
515 | unsigned long irq_flags; | |
516 | ||
517 | spin_lock_irqsave(&fman->lock, irq_flags); | |
518 | fman->fifo_down = false; | |
519 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
520 | } | |
521 | ||
522 | ||
523 | int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, | |
524 | struct drm_file *file_priv) | |
525 | { | |
526 | struct drm_vmw_fence_wait_arg *arg = | |
527 | (struct drm_vmw_fence_wait_arg *)data; | |
528 | unsigned long timeout; | |
529 | struct ttm_base_object *base; | |
530 | struct vmw_fence_obj *fence; | |
531 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
532 | int ret; | |
533 | uint64_t wait_timeout = ((uint64_t)arg->timeout_us * HZ); | |
534 | ||
535 | /* | |
536 | * 64-bit division not present on 32-bit systems, so do an | |
537 | * approximation. (Divide by 1000000). | |
538 | */ | |
539 | ||
540 | wait_timeout = (wait_timeout >> 20) + (wait_timeout >> 24) - | |
541 | (wait_timeout >> 26); | |
542 | ||
543 | if (!arg->cookie_valid) { | |
544 | arg->cookie_valid = 1; | |
545 | arg->kernel_cookie = jiffies + wait_timeout; | |
546 | } | |
547 | ||
548 | base = ttm_base_object_lookup(tfile, arg->handle); | |
549 | if (unlikely(base == NULL)) { | |
550 | printk(KERN_ERR "Wait invalid fence object handle " | |
551 | "0x%08lx.\n", | |
552 | (unsigned long)arg->handle); | |
553 | return -EINVAL; | |
554 | } | |
555 | ||
556 | fence = &(container_of(base, struct vmw_user_fence, base)->fence); | |
557 | ||
558 | timeout = jiffies; | |
559 | if (time_after_eq(timeout, (unsigned long)arg->kernel_cookie)) { | |
560 | ret = ((vmw_fence_obj_signaled(fence, arg->flags)) ? | |
561 | 0 : -EBUSY); | |
562 | goto out; | |
563 | } | |
564 | ||
565 | timeout = (unsigned long)arg->kernel_cookie - timeout; | |
566 | ||
567 | ret = vmw_fence_obj_wait(fence, arg->flags, arg->lazy, true, timeout); | |
568 | ||
569 | out: | |
570 | ttm_base_object_unref(&base); | |
571 | ||
572 | /* | |
573 | * Optionally unref the fence object. | |
574 | */ | |
575 | ||
576 | if (ret == 0 && (arg->wait_options & DRM_VMW_WAIT_OPTION_UNREF)) | |
577 | return ttm_ref_object_base_unref(tfile, arg->handle, | |
578 | TTM_REF_USAGE); | |
579 | return ret; | |
580 | } | |
581 | ||
582 | int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, | |
583 | struct drm_file *file_priv) | |
584 | { | |
585 | struct drm_vmw_fence_signaled_arg *arg = | |
586 | (struct drm_vmw_fence_signaled_arg *) data; | |
587 | struct ttm_base_object *base; | |
588 | struct vmw_fence_obj *fence; | |
589 | struct vmw_fence_manager *fman; | |
590 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
591 | struct vmw_private *dev_priv = vmw_priv(dev); | |
592 | ||
593 | base = ttm_base_object_lookup(tfile, arg->handle); | |
594 | if (unlikely(base == NULL)) { | |
595 | printk(KERN_ERR "Fence signaled invalid fence object handle " | |
596 | "0x%08lx.\n", | |
597 | (unsigned long)arg->handle); | |
598 | return -EINVAL; | |
599 | } | |
600 | ||
601 | fence = &(container_of(base, struct vmw_user_fence, base)->fence); | |
602 | fman = fence->fman; | |
603 | ||
604 | arg->signaled = vmw_fence_obj_signaled(fence, arg->flags); | |
605 | spin_lock_irq(&fman->lock); | |
606 | ||
607 | arg->signaled_flags = fence->signaled; | |
608 | arg->passed_seqno = dev_priv->last_read_seqno; | |
609 | spin_unlock_irq(&fman->lock); | |
610 | ||
611 | ttm_base_object_unref(&base); | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
616 | ||
617 | int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, | |
618 | struct drm_file *file_priv) | |
619 | { | |
620 | struct drm_vmw_fence_arg *arg = | |
621 | (struct drm_vmw_fence_arg *) data; | |
622 | ||
623 | return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, | |
624 | arg->handle, | |
625 | TTM_REF_USAGE); | |
626 | } |