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ae2a1040 TH |
1 | /************************************************************************** |
2 | * | |
54fbde8a | 3 | * Copyright © 2011-2014 VMware, Inc., Palo Alto, CA., USA |
ae2a1040 TH |
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 | ||
760285e7 | 28 | #include <drm/drmP.h> |
ae2a1040 TH |
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; | |
ae2a1040 | 37 | struct list_head fence_list; |
496eb6fd | 38 | struct work_struct work; |
ae2a1040 TH |
39 | u32 user_fence_size; |
40 | u32 fence_size; | |
57c5ee79 | 41 | u32 event_fence_action_size; |
ae2a1040 TH |
42 | bool fifo_down; |
43 | struct list_head cleanup_list; | |
57c5ee79 TH |
44 | uint32_t pending_actions[VMW_ACTION_MAX]; |
45 | struct mutex goal_irq_mutex; | |
46 | bool goal_irq_on; /* Protected by @goal_irq_mutex */ | |
47 | bool seqno_valid; /* Protected by @lock, and may not be set to true | |
48 | without the @goal_irq_mutex held. */ | |
76bf0db5 | 49 | u64 ctx; |
ae2a1040 TH |
50 | }; |
51 | ||
52 | struct vmw_user_fence { | |
53 | struct ttm_base_object base; | |
54 | struct vmw_fence_obj fence; | |
55 | }; | |
56 | ||
57 | /** | |
57c5ee79 | 58 | * struct vmw_event_fence_action - fence action that delivers a drm event. |
ae2a1040 | 59 | * |
57c5ee79 TH |
60 | * @e: A struct drm_pending_event that controls the event delivery. |
61 | * @action: A struct vmw_fence_action to hook up to a fence. | |
62 | * @fence: A referenced pointer to the fence to keep it alive while @action | |
63 | * hangs on it. | |
64 | * @dev: Pointer to a struct drm_device so we can access the event stuff. | |
65 | * @kref: Both @e and @action has destructors, so we need to refcount. | |
66 | * @size: Size accounted for this object. | |
67 | * @tv_sec: If non-null, the variable pointed to will be assigned | |
68 | * current time tv_sec val when the fence signals. | |
69 | * @tv_usec: Must be set if @tv_sec is set, and the variable pointed to will | |
70 | * be assigned the current time tv_usec val when the fence signals. | |
71 | */ | |
72 | struct vmw_event_fence_action { | |
57c5ee79 | 73 | struct vmw_fence_action action; |
8b7de6aa JB |
74 | |
75 | struct drm_pending_event *event; | |
57c5ee79 TH |
76 | struct vmw_fence_obj *fence; |
77 | struct drm_device *dev; | |
8b7de6aa | 78 | |
57c5ee79 TH |
79 | uint32_t *tv_sec; |
80 | uint32_t *tv_usec; | |
81 | }; | |
82 | ||
2298e804 ML |
83 | static struct vmw_fence_manager * |
84 | fman_from_fence(struct vmw_fence_obj *fence) | |
85 | { | |
86 | return container_of(fence->base.lock, struct vmw_fence_manager, lock); | |
87 | } | |
88 | ||
57c5ee79 TH |
89 | /** |
90 | * Note on fencing subsystem usage of irqs: | |
91 | * Typically the vmw_fences_update function is called | |
92 | * | |
93 | * a) When a new fence seqno has been submitted by the fifo code. | |
94 | * b) On-demand when we have waiters. Sleeping waiters will switch on the | |
95 | * ANY_FENCE irq and call vmw_fences_update function each time an ANY_FENCE | |
96 | * irq is received. When the last fence waiter is gone, that IRQ is masked | |
97 | * away. | |
98 | * | |
99 | * In situations where there are no waiters and we don't submit any new fences, | |
100 | * fence objects may not be signaled. This is perfectly OK, since there are | |
101 | * no consumers of the signaled data, but that is NOT ok when there are fence | |
102 | * actions attached to a fence. The fencing subsystem then makes use of the | |
103 | * FENCE_GOAL irq and sets the fence goal seqno to that of the next fence | |
104 | * which has an action attached, and each time vmw_fences_update is called, | |
105 | * the subsystem makes sure the fence goal seqno is updated. | |
106 | * | |
107 | * The fence goal seqno irq is on as long as there are unsignaled fence | |
108 | * objects with actions attached to them. | |
ae2a1040 TH |
109 | */ |
110 | ||
f54d1867 | 111 | static void vmw_fence_obj_destroy(struct dma_fence *f) |
ae2a1040 TH |
112 | { |
113 | struct vmw_fence_obj *fence = | |
2298e804 | 114 | container_of(f, struct vmw_fence_obj, base); |
ae2a1040 | 115 | |
2298e804 ML |
116 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
117 | unsigned long irq_flags; | |
ae2a1040 | 118 | |
2298e804 | 119 | spin_lock_irqsave(&fman->lock, irq_flags); |
ae2a1040 | 120 | list_del_init(&fence->head); |
2298e804 ML |
121 | --fman->num_fence_objects; |
122 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
123 | fence->destroy(fence); | |
124 | } | |
ae2a1040 | 125 | |
f54d1867 | 126 | static const char *vmw_fence_get_driver_name(struct dma_fence *f) |
2298e804 ML |
127 | { |
128 | return "vmwgfx"; | |
129 | } | |
130 | ||
f54d1867 | 131 | static const char *vmw_fence_get_timeline_name(struct dma_fence *f) |
2298e804 ML |
132 | { |
133 | return "svga"; | |
ae2a1040 TH |
134 | } |
135 | ||
f54d1867 | 136 | static bool vmw_fence_enable_signaling(struct dma_fence *f) |
2298e804 ML |
137 | { |
138 | struct vmw_fence_obj *fence = | |
139 | container_of(f, struct vmw_fence_obj, base); | |
140 | ||
141 | struct vmw_fence_manager *fman = fman_from_fence(fence); | |
142 | struct vmw_private *dev_priv = fman->dev_priv; | |
143 | ||
b76ff5ea TH |
144 | u32 *fifo_mem = dev_priv->mmio_virt; |
145 | u32 seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE); | |
2298e804 ML |
146 | if (seqno - fence->base.seqno < VMW_FENCE_WRAP) |
147 | return false; | |
148 | ||
496eb6fd | 149 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); |
2298e804 ML |
150 | |
151 | return true; | |
152 | } | |
153 | ||
154 | struct vmwgfx_wait_cb { | |
f54d1867 | 155 | struct dma_fence_cb base; |
2298e804 ML |
156 | struct task_struct *task; |
157 | }; | |
158 | ||
159 | static void | |
f54d1867 | 160 | vmwgfx_wait_cb(struct dma_fence *fence, struct dma_fence_cb *cb) |
2298e804 ML |
161 | { |
162 | struct vmwgfx_wait_cb *wait = | |
163 | container_of(cb, struct vmwgfx_wait_cb, base); | |
164 | ||
165 | wake_up_process(wait->task); | |
166 | } | |
167 | ||
168 | static void __vmw_fences_update(struct vmw_fence_manager *fman); | |
169 | ||
f54d1867 | 170 | static long vmw_fence_wait(struct dma_fence *f, bool intr, signed long timeout) |
2298e804 ML |
171 | { |
172 | struct vmw_fence_obj *fence = | |
173 | container_of(f, struct vmw_fence_obj, base); | |
174 | ||
175 | struct vmw_fence_manager *fman = fman_from_fence(fence); | |
176 | struct vmw_private *dev_priv = fman->dev_priv; | |
177 | struct vmwgfx_wait_cb cb; | |
178 | long ret = timeout; | |
179 | unsigned long irq_flags; | |
180 | ||
181 | if (likely(vmw_fence_obj_signaled(fence))) | |
182 | return timeout; | |
183 | ||
184 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); | |
185 | vmw_seqno_waiter_add(dev_priv); | |
186 | ||
187 | spin_lock_irqsave(f->lock, irq_flags); | |
188 | ||
189 | if (intr && signal_pending(current)) { | |
190 | ret = -ERESTARTSYS; | |
191 | goto out; | |
192 | } | |
193 | ||
194 | cb.base.func = vmwgfx_wait_cb; | |
195 | cb.task = current; | |
196 | list_add(&cb.base.node, &f->cb_list); | |
197 | ||
198 | while (ret > 0) { | |
199 | __vmw_fences_update(fman); | |
f54d1867 | 200 | if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &f->flags)) |
2298e804 ML |
201 | break; |
202 | ||
203 | if (intr) | |
204 | __set_current_state(TASK_INTERRUPTIBLE); | |
205 | else | |
206 | __set_current_state(TASK_UNINTERRUPTIBLE); | |
207 | spin_unlock_irqrestore(f->lock, irq_flags); | |
208 | ||
209 | ret = schedule_timeout(ret); | |
210 | ||
211 | spin_lock_irqsave(f->lock, irq_flags); | |
212 | if (ret > 0 && intr && signal_pending(current)) | |
213 | ret = -ERESTARTSYS; | |
214 | } | |
215 | ||
216 | if (!list_empty(&cb.base.node)) | |
217 | list_del(&cb.base.node); | |
218 | __set_current_state(TASK_RUNNING); | |
219 | ||
220 | out: | |
221 | spin_unlock_irqrestore(f->lock, irq_flags); | |
222 | ||
223 | vmw_seqno_waiter_remove(dev_priv); | |
224 | ||
225 | return ret; | |
226 | } | |
227 | ||
f54d1867 | 228 | static struct dma_fence_ops vmw_fence_ops = { |
2298e804 ML |
229 | .get_driver_name = vmw_fence_get_driver_name, |
230 | .get_timeline_name = vmw_fence_get_timeline_name, | |
231 | .enable_signaling = vmw_fence_enable_signaling, | |
232 | .wait = vmw_fence_wait, | |
233 | .release = vmw_fence_obj_destroy, | |
234 | }; | |
235 | ||
ae2a1040 TH |
236 | |
237 | /** | |
238 | * Execute signal actions on fences recently signaled. | |
239 | * This is done from a workqueue so we don't have to execute | |
240 | * signal actions from atomic context. | |
241 | */ | |
242 | ||
243 | static void vmw_fence_work_func(struct work_struct *work) | |
244 | { | |
245 | struct vmw_fence_manager *fman = | |
246 | container_of(work, struct vmw_fence_manager, work); | |
247 | struct list_head list; | |
248 | struct vmw_fence_action *action, *next_action; | |
57c5ee79 | 249 | bool seqno_valid; |
ae2a1040 TH |
250 | |
251 | do { | |
252 | INIT_LIST_HEAD(&list); | |
57c5ee79 TH |
253 | mutex_lock(&fman->goal_irq_mutex); |
254 | ||
ae2a1040 TH |
255 | spin_lock_irq(&fman->lock); |
256 | list_splice_init(&fman->cleanup_list, &list); | |
57c5ee79 | 257 | seqno_valid = fman->seqno_valid; |
ae2a1040 TH |
258 | spin_unlock_irq(&fman->lock); |
259 | ||
57c5ee79 TH |
260 | if (!seqno_valid && fman->goal_irq_on) { |
261 | fman->goal_irq_on = false; | |
262 | vmw_goal_waiter_remove(fman->dev_priv); | |
263 | } | |
264 | mutex_unlock(&fman->goal_irq_mutex); | |
265 | ||
ae2a1040 TH |
266 | if (list_empty(&list)) |
267 | return; | |
268 | ||
269 | /* | |
270 | * At this point, only we should be able to manipulate the | |
271 | * list heads of the actions we have on the private list. | |
57c5ee79 | 272 | * hence fman::lock not held. |
ae2a1040 TH |
273 | */ |
274 | ||
275 | list_for_each_entry_safe(action, next_action, &list, head) { | |
276 | list_del_init(&action->head); | |
57c5ee79 TH |
277 | if (action->cleanup) |
278 | action->cleanup(action); | |
ae2a1040 TH |
279 | } |
280 | } while (1); | |
281 | } | |
282 | ||
283 | struct vmw_fence_manager *vmw_fence_manager_init(struct vmw_private *dev_priv) | |
284 | { | |
285 | struct vmw_fence_manager *fman = kzalloc(sizeof(*fman), GFP_KERNEL); | |
286 | ||
287 | if (unlikely(fman == NULL)) | |
288 | return NULL; | |
289 | ||
290 | fman->dev_priv = dev_priv; | |
291 | spin_lock_init(&fman->lock); | |
292 | INIT_LIST_HEAD(&fman->fence_list); | |
293 | INIT_LIST_HEAD(&fman->cleanup_list); | |
294 | INIT_WORK(&fman->work, &vmw_fence_work_func); | |
295 | fman->fifo_down = true; | |
296 | fman->user_fence_size = ttm_round_pot(sizeof(struct vmw_user_fence)); | |
297 | fman->fence_size = ttm_round_pot(sizeof(struct vmw_fence_obj)); | |
57c5ee79 TH |
298 | fman->event_fence_action_size = |
299 | ttm_round_pot(sizeof(struct vmw_event_fence_action)); | |
300 | mutex_init(&fman->goal_irq_mutex); | |
f54d1867 | 301 | fman->ctx = dma_fence_context_alloc(1); |
ae2a1040 TH |
302 | |
303 | return fman; | |
304 | } | |
305 | ||
306 | void vmw_fence_manager_takedown(struct vmw_fence_manager *fman) | |
307 | { | |
308 | unsigned long irq_flags; | |
309 | bool lists_empty; | |
310 | ||
311 | (void) cancel_work_sync(&fman->work); | |
312 | ||
313 | spin_lock_irqsave(&fman->lock, irq_flags); | |
314 | lists_empty = list_empty(&fman->fence_list) && | |
315 | list_empty(&fman->cleanup_list); | |
316 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
317 | ||
318 | BUG_ON(!lists_empty); | |
319 | kfree(fman); | |
320 | } | |
321 | ||
322 | static int vmw_fence_obj_init(struct vmw_fence_manager *fman, | |
c060a4e1 | 323 | struct vmw_fence_obj *fence, u32 seqno, |
ae2a1040 TH |
324 | void (*destroy) (struct vmw_fence_obj *fence)) |
325 | { | |
326 | unsigned long irq_flags; | |
ae2a1040 TH |
327 | int ret = 0; |
328 | ||
f54d1867 CW |
329 | dma_fence_init(&fence->base, &vmw_fence_ops, &fman->lock, |
330 | fman->ctx, seqno); | |
ae2a1040 | 331 | INIT_LIST_HEAD(&fence->seq_passed_actions); |
ae2a1040 | 332 | fence->destroy = destroy; |
ae2a1040 TH |
333 | |
334 | spin_lock_irqsave(&fman->lock, irq_flags); | |
335 | if (unlikely(fman->fifo_down)) { | |
336 | ret = -EBUSY; | |
337 | goto out_unlock; | |
338 | } | |
339 | list_add_tail(&fence->head, &fman->fence_list); | |
2298e804 | 340 | ++fman->num_fence_objects; |
ae2a1040 TH |
341 | |
342 | out_unlock: | |
343 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
344 | return ret; | |
345 | ||
346 | } | |
347 | ||
94844cf0 | 348 | static void vmw_fences_perform_actions(struct vmw_fence_manager *fman, |
ae2a1040 TH |
349 | struct list_head *list) |
350 | { | |
351 | struct vmw_fence_action *action, *next_action; | |
352 | ||
353 | list_for_each_entry_safe(action, next_action, list, head) { | |
354 | list_del_init(&action->head); | |
57c5ee79 | 355 | fman->pending_actions[action->type]--; |
ae2a1040 TH |
356 | if (action->seq_passed != NULL) |
357 | action->seq_passed(action); | |
358 | ||
359 | /* | |
360 | * Add the cleanup action to the cleanup list so that | |
361 | * it will be performed by a worker task. | |
362 | */ | |
363 | ||
57c5ee79 TH |
364 | list_add_tail(&action->head, &fman->cleanup_list); |
365 | } | |
366 | } | |
367 | ||
368 | /** | |
369 | * vmw_fence_goal_new_locked - Figure out a new device fence goal | |
370 | * seqno if needed. | |
371 | * | |
372 | * @fman: Pointer to a fence manager. | |
373 | * @passed_seqno: The seqno the device currently signals as passed. | |
374 | * | |
375 | * This function should be called with the fence manager lock held. | |
376 | * It is typically called when we have a new passed_seqno, and | |
377 | * we might need to update the fence goal. It checks to see whether | |
378 | * the current fence goal has already passed, and, in that case, | |
379 | * scans through all unsignaled fences to get the next fence object with an | |
380 | * action attached, and sets the seqno of that fence as a new fence goal. | |
381 | * | |
382 | * returns true if the device goal seqno was updated. False otherwise. | |
383 | */ | |
384 | static bool vmw_fence_goal_new_locked(struct vmw_fence_manager *fman, | |
385 | u32 passed_seqno) | |
386 | { | |
387 | u32 goal_seqno; | |
b76ff5ea | 388 | u32 *fifo_mem; |
57c5ee79 TH |
389 | struct vmw_fence_obj *fence; |
390 | ||
391 | if (likely(!fman->seqno_valid)) | |
392 | return false; | |
393 | ||
394 | fifo_mem = fman->dev_priv->mmio_virt; | |
b76ff5ea | 395 | goal_seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE_GOAL); |
57c5ee79 TH |
396 | if (likely(passed_seqno - goal_seqno >= VMW_FENCE_WRAP)) |
397 | return false; | |
398 | ||
399 | fman->seqno_valid = false; | |
400 | list_for_each_entry(fence, &fman->fence_list, head) { | |
401 | if (!list_empty(&fence->seq_passed_actions)) { | |
402 | fman->seqno_valid = true; | |
b76ff5ea TH |
403 | vmw_mmio_write(fence->base.seqno, |
404 | fifo_mem + SVGA_FIFO_FENCE_GOAL); | |
57c5ee79 TH |
405 | break; |
406 | } | |
ae2a1040 | 407 | } |
57c5ee79 TH |
408 | |
409 | return true; | |
410 | } | |
411 | ||
412 | ||
413 | /** | |
414 | * vmw_fence_goal_check_locked - Replace the device fence goal seqno if | |
415 | * needed. | |
416 | * | |
417 | * @fence: Pointer to a struct vmw_fence_obj the seqno of which should be | |
418 | * considered as a device fence goal. | |
419 | * | |
420 | * This function should be called with the fence manager lock held. | |
421 | * It is typically called when an action has been attached to a fence to | |
422 | * check whether the seqno of that fence should be used for a fence | |
423 | * goal interrupt. This is typically needed if the current fence goal is | |
424 | * invalid, or has a higher seqno than that of the current fence object. | |
425 | * | |
426 | * returns true if the device goal seqno was updated. False otherwise. | |
427 | */ | |
428 | static bool vmw_fence_goal_check_locked(struct vmw_fence_obj *fence) | |
429 | { | |
2298e804 | 430 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
57c5ee79 | 431 | u32 goal_seqno; |
b76ff5ea | 432 | u32 *fifo_mem; |
57c5ee79 | 433 | |
f54d1867 | 434 | if (dma_fence_is_signaled_locked(&fence->base)) |
57c5ee79 TH |
435 | return false; |
436 | ||
2298e804 | 437 | fifo_mem = fman->dev_priv->mmio_virt; |
b76ff5ea | 438 | goal_seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE_GOAL); |
2298e804 ML |
439 | if (likely(fman->seqno_valid && |
440 | goal_seqno - fence->base.seqno < VMW_FENCE_WRAP)) | |
57c5ee79 TH |
441 | return false; |
442 | ||
b76ff5ea | 443 | vmw_mmio_write(fence->base.seqno, fifo_mem + SVGA_FIFO_FENCE_GOAL); |
2298e804 | 444 | fman->seqno_valid = true; |
57c5ee79 TH |
445 | |
446 | return true; | |
ae2a1040 TH |
447 | } |
448 | ||
2298e804 | 449 | static void __vmw_fences_update(struct vmw_fence_manager *fman) |
ae2a1040 | 450 | { |
ae2a1040 TH |
451 | struct vmw_fence_obj *fence, *next_fence; |
452 | struct list_head action_list; | |
57c5ee79 TH |
453 | bool needs_rerun; |
454 | uint32_t seqno, new_seqno; | |
b76ff5ea | 455 | u32 *fifo_mem = fman->dev_priv->mmio_virt; |
ae2a1040 | 456 | |
b76ff5ea | 457 | seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE); |
57c5ee79 | 458 | rerun: |
ae2a1040 | 459 | list_for_each_entry_safe(fence, next_fence, &fman->fence_list, head) { |
2298e804 | 460 | if (seqno - fence->base.seqno < VMW_FENCE_WRAP) { |
ae2a1040 | 461 | list_del_init(&fence->head); |
f54d1867 | 462 | dma_fence_signal_locked(&fence->base); |
ae2a1040 TH |
463 | INIT_LIST_HEAD(&action_list); |
464 | list_splice_init(&fence->seq_passed_actions, | |
465 | &action_list); | |
466 | vmw_fences_perform_actions(fman, &action_list); | |
57c5ee79 TH |
467 | } else |
468 | break; | |
ae2a1040 | 469 | } |
57c5ee79 | 470 | |
57c5ee79 TH |
471 | /* |
472 | * Rerun if the fence goal seqno was updated, and the | |
473 | * hardware might have raced with that update, so that | |
474 | * we missed a fence_goal irq. | |
475 | */ | |
476 | ||
2298e804 | 477 | needs_rerun = vmw_fence_goal_new_locked(fman, seqno); |
57c5ee79 | 478 | if (unlikely(needs_rerun)) { |
b76ff5ea | 479 | new_seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE); |
57c5ee79 TH |
480 | if (new_seqno != seqno) { |
481 | seqno = new_seqno; | |
482 | goto rerun; | |
483 | } | |
484 | } | |
2298e804 ML |
485 | |
486 | if (!list_empty(&fman->cleanup_list)) | |
487 | (void) schedule_work(&fman->work); | |
57c5ee79 | 488 | } |
ae2a1040 | 489 | |
2298e804 | 490 | void vmw_fences_update(struct vmw_fence_manager *fman) |
ae2a1040 | 491 | { |
ae2a1040 | 492 | unsigned long irq_flags; |
ae2a1040 TH |
493 | |
494 | spin_lock_irqsave(&fman->lock, irq_flags); | |
2298e804 | 495 | __vmw_fences_update(fman); |
ae2a1040 | 496 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
2298e804 ML |
497 | } |
498 | ||
499 | bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence) | |
500 | { | |
501 | struct vmw_fence_manager *fman = fman_from_fence(fence); | |
ae2a1040 | 502 | |
f54d1867 | 503 | if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->base.flags)) |
ae2a1040 TH |
504 | return 1; |
505 | ||
c060a4e1 | 506 | vmw_fences_update(fman); |
ae2a1040 | 507 | |
f54d1867 | 508 | return dma_fence_is_signaled(&fence->base); |
ae2a1040 TH |
509 | } |
510 | ||
c060a4e1 | 511 | int vmw_fence_obj_wait(struct vmw_fence_obj *fence, bool lazy, |
ae2a1040 TH |
512 | bool interruptible, unsigned long timeout) |
513 | { | |
f54d1867 | 514 | long ret = dma_fence_wait_timeout(&fence->base, interruptible, timeout); |
ae2a1040 | 515 | |
2298e804 | 516 | if (likely(ret > 0)) |
ae2a1040 | 517 | return 0; |
2298e804 ML |
518 | else if (ret == 0) |
519 | return -EBUSY; | |
ae2a1040 | 520 | else |
2298e804 | 521 | return ret; |
ae2a1040 TH |
522 | } |
523 | ||
524 | void vmw_fence_obj_flush(struct vmw_fence_obj *fence) | |
525 | { | |
2298e804 | 526 | struct vmw_private *dev_priv = fman_from_fence(fence)->dev_priv; |
ae2a1040 TH |
527 | |
528 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); | |
529 | } | |
530 | ||
531 | static void vmw_fence_destroy(struct vmw_fence_obj *fence) | |
532 | { | |
f54d1867 | 533 | dma_fence_free(&fence->base); |
ae2a1040 TH |
534 | } |
535 | ||
536 | int vmw_fence_create(struct vmw_fence_manager *fman, | |
537 | uint32_t seqno, | |
ae2a1040 TH |
538 | struct vmw_fence_obj **p_fence) |
539 | { | |
ae2a1040 | 540 | struct vmw_fence_obj *fence; |
f7652afa | 541 | int ret; |
ae2a1040 | 542 | |
ae2a1040 | 543 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); |
1f563a6a TH |
544 | if (unlikely(fence == NULL)) |
545 | return -ENOMEM; | |
ae2a1040 | 546 | |
c060a4e1 | 547 | ret = vmw_fence_obj_init(fman, fence, seqno, |
ae2a1040 TH |
548 | vmw_fence_destroy); |
549 | if (unlikely(ret != 0)) | |
550 | goto out_err_init; | |
551 | ||
552 | *p_fence = fence; | |
553 | return 0; | |
554 | ||
555 | out_err_init: | |
556 | kfree(fence); | |
ae2a1040 TH |
557 | return ret; |
558 | } | |
559 | ||
560 | ||
561 | static void vmw_user_fence_destroy(struct vmw_fence_obj *fence) | |
562 | { | |
563 | struct vmw_user_fence *ufence = | |
564 | container_of(fence, struct vmw_user_fence, fence); | |
2298e804 | 565 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
ae2a1040 | 566 | |
35f62a58 | 567 | ttm_base_object_kfree(ufence, base); |
ae2a1040 TH |
568 | /* |
569 | * Free kernel space accounting. | |
570 | */ | |
571 | ttm_mem_global_free(vmw_mem_glob(fman->dev_priv), | |
572 | fman->user_fence_size); | |
573 | } | |
574 | ||
575 | static void vmw_user_fence_base_release(struct ttm_base_object **p_base) | |
576 | { | |
577 | struct ttm_base_object *base = *p_base; | |
578 | struct vmw_user_fence *ufence = | |
579 | container_of(base, struct vmw_user_fence, base); | |
580 | struct vmw_fence_obj *fence = &ufence->fence; | |
581 | ||
582 | *p_base = NULL; | |
583 | vmw_fence_obj_unreference(&fence); | |
584 | } | |
585 | ||
586 | int vmw_user_fence_create(struct drm_file *file_priv, | |
587 | struct vmw_fence_manager *fman, | |
588 | uint32_t seqno, | |
ae2a1040 TH |
589 | struct vmw_fence_obj **p_fence, |
590 | uint32_t *p_handle) | |
591 | { | |
592 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
593 | struct vmw_user_fence *ufence; | |
594 | struct vmw_fence_obj *tmp; | |
595 | struct ttm_mem_global *mem_glob = vmw_mem_glob(fman->dev_priv); | |
596 | int ret; | |
597 | ||
598 | /* | |
599 | * Kernel memory space accounting, since this object may | |
600 | * be created by a user-space request. | |
601 | */ | |
602 | ||
603 | ret = ttm_mem_global_alloc(mem_glob, fman->user_fence_size, | |
604 | false, false); | |
605 | if (unlikely(ret != 0)) | |
606 | return ret; | |
607 | ||
608 | ufence = kzalloc(sizeof(*ufence), GFP_KERNEL); | |
609 | if (unlikely(ufence == NULL)) { | |
610 | ret = -ENOMEM; | |
611 | goto out_no_object; | |
612 | } | |
613 | ||
614 | ret = vmw_fence_obj_init(fman, &ufence->fence, seqno, | |
c060a4e1 | 615 | vmw_user_fence_destroy); |
ae2a1040 TH |
616 | if (unlikely(ret != 0)) { |
617 | kfree(ufence); | |
618 | goto out_no_object; | |
619 | } | |
620 | ||
621 | /* | |
622 | * The base object holds a reference which is freed in | |
623 | * vmw_user_fence_base_release. | |
624 | */ | |
625 | tmp = vmw_fence_obj_reference(&ufence->fence); | |
626 | ret = ttm_base_object_init(tfile, &ufence->base, false, | |
627 | VMW_RES_FENCE, | |
628 | &vmw_user_fence_base_release, NULL); | |
629 | ||
630 | ||
631 | if (unlikely(ret != 0)) { | |
632 | /* | |
633 | * Free the base object's reference | |
634 | */ | |
635 | vmw_fence_obj_unreference(&tmp); | |
636 | goto out_err; | |
637 | } | |
638 | ||
639 | *p_fence = &ufence->fence; | |
640 | *p_handle = ufence->base.hash.key; | |
641 | ||
642 | return 0; | |
643 | out_err: | |
644 | tmp = &ufence->fence; | |
645 | vmw_fence_obj_unreference(&tmp); | |
646 | out_no_object: | |
647 | ttm_mem_global_free(mem_glob, fman->user_fence_size); | |
648 | return ret; | |
649 | } | |
650 | ||
651 | ||
652 | /** | |
653 | * vmw_fence_fifo_down - signal all unsignaled fence objects. | |
654 | */ | |
655 | ||
656 | void vmw_fence_fifo_down(struct vmw_fence_manager *fman) | |
657 | { | |
ae2a1040 TH |
658 | struct list_head action_list; |
659 | int ret; | |
660 | ||
661 | /* | |
662 | * The list may be altered while we traverse it, so always | |
663 | * restart when we've released the fman->lock. | |
664 | */ | |
665 | ||
2298e804 | 666 | spin_lock_irq(&fman->lock); |
ae2a1040 TH |
667 | fman->fifo_down = true; |
668 | while (!list_empty(&fman->fence_list)) { | |
669 | struct vmw_fence_obj *fence = | |
670 | list_entry(fman->fence_list.prev, struct vmw_fence_obj, | |
671 | head); | |
f54d1867 | 672 | dma_fence_get(&fence->base); |
ae2a1040 TH |
673 | spin_unlock_irq(&fman->lock); |
674 | ||
c060a4e1 | 675 | ret = vmw_fence_obj_wait(fence, false, false, |
ae2a1040 TH |
676 | VMW_FENCE_WAIT_TIMEOUT); |
677 | ||
678 | if (unlikely(ret != 0)) { | |
679 | list_del_init(&fence->head); | |
f54d1867 | 680 | dma_fence_signal(&fence->base); |
ae2a1040 TH |
681 | INIT_LIST_HEAD(&action_list); |
682 | list_splice_init(&fence->seq_passed_actions, | |
683 | &action_list); | |
684 | vmw_fences_perform_actions(fman, &action_list); | |
ae2a1040 TH |
685 | } |
686 | ||
ae2a1040 | 687 | BUG_ON(!list_empty(&fence->head)); |
f54d1867 | 688 | dma_fence_put(&fence->base); |
2298e804 | 689 | spin_lock_irq(&fman->lock); |
ae2a1040 | 690 | } |
2298e804 | 691 | spin_unlock_irq(&fman->lock); |
ae2a1040 TH |
692 | } |
693 | ||
694 | void vmw_fence_fifo_up(struct vmw_fence_manager *fman) | |
695 | { | |
696 | unsigned long irq_flags; | |
697 | ||
698 | spin_lock_irqsave(&fman->lock, irq_flags); | |
699 | fman->fifo_down = false; | |
700 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
701 | } | |
702 | ||
703 | ||
f7652afa TH |
704 | /** |
705 | * vmw_fence_obj_lookup - Look up a user-space fence object | |
706 | * | |
707 | * @tfile: A struct ttm_object_file identifying the caller. | |
708 | * @handle: A handle identifying the fence object. | |
709 | * @return: A struct vmw_user_fence base ttm object on success or | |
710 | * an error pointer on failure. | |
711 | * | |
712 | * The fence object is looked up and type-checked. The caller needs | |
713 | * to have opened the fence object first, but since that happens on | |
714 | * creation and fence objects aren't shareable, that's not an | |
715 | * issue currently. | |
716 | */ | |
717 | static struct ttm_base_object * | |
718 | vmw_fence_obj_lookup(struct ttm_object_file *tfile, u32 handle) | |
719 | { | |
720 | struct ttm_base_object *base = ttm_base_object_lookup(tfile, handle); | |
721 | ||
722 | if (!base) { | |
723 | pr_err("Invalid fence object handle 0x%08lx.\n", | |
724 | (unsigned long)handle); | |
725 | return ERR_PTR(-EINVAL); | |
726 | } | |
727 | ||
728 | if (base->refcount_release != vmw_user_fence_base_release) { | |
729 | pr_err("Invalid fence object handle 0x%08lx.\n", | |
730 | (unsigned long)handle); | |
731 | ttm_base_object_unref(&base); | |
732 | return ERR_PTR(-EINVAL); | |
733 | } | |
734 | ||
735 | return base; | |
736 | } | |
737 | ||
738 | ||
ae2a1040 TH |
739 | int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, |
740 | struct drm_file *file_priv) | |
741 | { | |
742 | struct drm_vmw_fence_wait_arg *arg = | |
743 | (struct drm_vmw_fence_wait_arg *)data; | |
744 | unsigned long timeout; | |
745 | struct ttm_base_object *base; | |
746 | struct vmw_fence_obj *fence; | |
747 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
748 | int ret; | |
749 | uint64_t wait_timeout = ((uint64_t)arg->timeout_us * HZ); | |
750 | ||
751 | /* | |
752 | * 64-bit division not present on 32-bit systems, so do an | |
753 | * approximation. (Divide by 1000000). | |
754 | */ | |
755 | ||
756 | wait_timeout = (wait_timeout >> 20) + (wait_timeout >> 24) - | |
757 | (wait_timeout >> 26); | |
758 | ||
759 | if (!arg->cookie_valid) { | |
760 | arg->cookie_valid = 1; | |
761 | arg->kernel_cookie = jiffies + wait_timeout; | |
762 | } | |
763 | ||
f7652afa TH |
764 | base = vmw_fence_obj_lookup(tfile, arg->handle); |
765 | if (IS_ERR(base)) | |
766 | return PTR_ERR(base); | |
ae2a1040 TH |
767 | |
768 | fence = &(container_of(base, struct vmw_user_fence, base)->fence); | |
769 | ||
770 | timeout = jiffies; | |
771 | if (time_after_eq(timeout, (unsigned long)arg->kernel_cookie)) { | |
c060a4e1 | 772 | ret = ((vmw_fence_obj_signaled(fence)) ? |
ae2a1040 TH |
773 | 0 : -EBUSY); |
774 | goto out; | |
775 | } | |
776 | ||
777 | timeout = (unsigned long)arg->kernel_cookie - timeout; | |
778 | ||
c060a4e1 | 779 | ret = vmw_fence_obj_wait(fence, arg->lazy, true, timeout); |
ae2a1040 TH |
780 | |
781 | out: | |
782 | ttm_base_object_unref(&base); | |
783 | ||
784 | /* | |
785 | * Optionally unref the fence object. | |
786 | */ | |
787 | ||
788 | if (ret == 0 && (arg->wait_options & DRM_VMW_WAIT_OPTION_UNREF)) | |
789 | return ttm_ref_object_base_unref(tfile, arg->handle, | |
790 | TTM_REF_USAGE); | |
791 | return ret; | |
792 | } | |
793 | ||
794 | int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, | |
795 | struct drm_file *file_priv) | |
796 | { | |
797 | struct drm_vmw_fence_signaled_arg *arg = | |
798 | (struct drm_vmw_fence_signaled_arg *) data; | |
799 | struct ttm_base_object *base; | |
800 | struct vmw_fence_obj *fence; | |
801 | struct vmw_fence_manager *fman; | |
802 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
803 | struct vmw_private *dev_priv = vmw_priv(dev); | |
804 | ||
f7652afa TH |
805 | base = vmw_fence_obj_lookup(tfile, arg->handle); |
806 | if (IS_ERR(base)) | |
807 | return PTR_ERR(base); | |
ae2a1040 TH |
808 | |
809 | fence = &(container_of(base, struct vmw_user_fence, base)->fence); | |
2298e804 | 810 | fman = fman_from_fence(fence); |
ae2a1040 | 811 | |
c060a4e1 | 812 | arg->signaled = vmw_fence_obj_signaled(fence); |
ae2a1040 | 813 | |
c060a4e1 | 814 | arg->signaled_flags = arg->flags; |
2298e804 | 815 | spin_lock_irq(&fman->lock); |
ae2a1040 TH |
816 | arg->passed_seqno = dev_priv->last_read_seqno; |
817 | spin_unlock_irq(&fman->lock); | |
818 | ||
819 | ttm_base_object_unref(&base); | |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
824 | ||
825 | int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, | |
826 | struct drm_file *file_priv) | |
827 | { | |
828 | struct drm_vmw_fence_arg *arg = | |
829 | (struct drm_vmw_fence_arg *) data; | |
830 | ||
831 | return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, | |
832 | arg->handle, | |
833 | TTM_REF_USAGE); | |
834 | } | |
57c5ee79 | 835 | |
57c5ee79 TH |
836 | /** |
837 | * vmw_event_fence_action_seq_passed | |
838 | * | |
839 | * @action: The struct vmw_fence_action embedded in a struct | |
840 | * vmw_event_fence_action. | |
841 | * | |
842 | * This function is called when the seqno of the fence where @action is | |
843 | * attached has passed. It queues the event on the submitter's event list. | |
844 | * This function is always called from atomic context, and may be called | |
8b7de6aa | 845 | * from irq context. |
57c5ee79 TH |
846 | */ |
847 | static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action) | |
848 | { | |
849 | struct vmw_event_fence_action *eaction = | |
850 | container_of(action, struct vmw_event_fence_action, action); | |
851 | struct drm_device *dev = eaction->dev; | |
6b82ef50 TH |
852 | struct drm_pending_event *event = eaction->event; |
853 | struct drm_file *file_priv; | |
57c5ee79 TH |
854 | unsigned long irq_flags; |
855 | ||
6b82ef50 TH |
856 | if (unlikely(event == NULL)) |
857 | return; | |
858 | ||
859 | file_priv = event->file_priv; | |
57c5ee79 TH |
860 | spin_lock_irqsave(&dev->event_lock, irq_flags); |
861 | ||
862 | if (likely(eaction->tv_sec != NULL)) { | |
863 | struct timeval tv; | |
864 | ||
865 | do_gettimeofday(&tv); | |
866 | *eaction->tv_sec = tv.tv_sec; | |
867 | *eaction->tv_usec = tv.tv_usec; | |
868 | } | |
869 | ||
fb740cf2 | 870 | drm_send_event_locked(dev, eaction->event); |
15b6b804 | 871 | eaction->event = NULL; |
57c5ee79 TH |
872 | spin_unlock_irqrestore(&dev->event_lock, irq_flags); |
873 | } | |
874 | ||
875 | /** | |
876 | * vmw_event_fence_action_cleanup | |
877 | * | |
878 | * @action: The struct vmw_fence_action embedded in a struct | |
879 | * vmw_event_fence_action. | |
880 | * | |
881 | * This function is the struct vmw_fence_action destructor. It's typically | |
882 | * called from a workqueue. | |
883 | */ | |
884 | static void vmw_event_fence_action_cleanup(struct vmw_fence_action *action) | |
885 | { | |
886 | struct vmw_event_fence_action *eaction = | |
887 | container_of(action, struct vmw_event_fence_action, action); | |
888 | ||
889 | vmw_fence_obj_unreference(&eaction->fence); | |
8b7de6aa | 890 | kfree(eaction); |
57c5ee79 TH |
891 | } |
892 | ||
893 | ||
894 | /** | |
895 | * vmw_fence_obj_add_action - Add an action to a fence object. | |
896 | * | |
897 | * @fence - The fence object. | |
898 | * @action - The action to add. | |
899 | * | |
900 | * Note that the action callbacks may be executed before this function | |
901 | * returns. | |
902 | */ | |
94844cf0 | 903 | static void vmw_fence_obj_add_action(struct vmw_fence_obj *fence, |
57c5ee79 TH |
904 | struct vmw_fence_action *action) |
905 | { | |
2298e804 | 906 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
57c5ee79 TH |
907 | unsigned long irq_flags; |
908 | bool run_update = false; | |
909 | ||
910 | mutex_lock(&fman->goal_irq_mutex); | |
911 | spin_lock_irqsave(&fman->lock, irq_flags); | |
912 | ||
913 | fman->pending_actions[action->type]++; | |
f54d1867 | 914 | if (dma_fence_is_signaled_locked(&fence->base)) { |
57c5ee79 TH |
915 | struct list_head action_list; |
916 | ||
917 | INIT_LIST_HEAD(&action_list); | |
918 | list_add_tail(&action->head, &action_list); | |
919 | vmw_fences_perform_actions(fman, &action_list); | |
920 | } else { | |
921 | list_add_tail(&action->head, &fence->seq_passed_actions); | |
922 | ||
923 | /* | |
924 | * This function may set fman::seqno_valid, so it must | |
925 | * be run with the goal_irq_mutex held. | |
926 | */ | |
927 | run_update = vmw_fence_goal_check_locked(fence); | |
928 | } | |
929 | ||
930 | spin_unlock_irqrestore(&fman->lock, irq_flags); | |
931 | ||
932 | if (run_update) { | |
933 | if (!fman->goal_irq_on) { | |
934 | fman->goal_irq_on = true; | |
935 | vmw_goal_waiter_add(fman->dev_priv); | |
936 | } | |
937 | vmw_fences_update(fman); | |
938 | } | |
939 | mutex_unlock(&fman->goal_irq_mutex); | |
940 | ||
941 | } | |
942 | ||
943 | /** | |
944 | * vmw_event_fence_action_create - Post an event for sending when a fence | |
945 | * object seqno has passed. | |
946 | * | |
947 | * @file_priv: The file connection on which the event should be posted. | |
948 | * @fence: The fence object on which to post the event. | |
949 | * @event: Event to be posted. This event should've been alloced | |
950 | * using k[mz]alloc, and should've been completely initialized. | |
951 | * @interruptible: Interruptible waits if possible. | |
952 | * | |
953 | * As a side effect, the object pointed to by @event may have been | |
954 | * freed when this function returns. If this function returns with | |
955 | * an error code, the caller needs to free that object. | |
956 | */ | |
957 | ||
8b7de6aa JB |
958 | int vmw_event_fence_action_queue(struct drm_file *file_priv, |
959 | struct vmw_fence_obj *fence, | |
960 | struct drm_pending_event *event, | |
961 | uint32_t *tv_sec, | |
962 | uint32_t *tv_usec, | |
963 | bool interruptible) | |
57c5ee79 | 964 | { |
0c5d3703 | 965 | struct vmw_event_fence_action *eaction; |
2298e804 | 966 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
57c5ee79 TH |
967 | |
968 | eaction = kzalloc(sizeof(*eaction), GFP_KERNEL); | |
8b7de6aa | 969 | if (unlikely(eaction == NULL)) |
57c5ee79 | 970 | return -ENOMEM; |
57c5ee79 | 971 | |
8b7de6aa | 972 | eaction->event = event; |
57c5ee79 TH |
973 | |
974 | eaction->action.seq_passed = vmw_event_fence_action_seq_passed; | |
975 | eaction->action.cleanup = vmw_event_fence_action_cleanup; | |
976 | eaction->action.type = VMW_ACTION_EVENT; | |
977 | ||
978 | eaction->fence = vmw_fence_obj_reference(fence); | |
979 | eaction->dev = fman->dev_priv->dev; | |
57c5ee79 TH |
980 | eaction->tv_sec = tv_sec; |
981 | eaction->tv_usec = tv_usec; | |
982 | ||
57c5ee79 TH |
983 | vmw_fence_obj_add_action(fence, &eaction->action); |
984 | ||
985 | return 0; | |
986 | } | |
987 | ||
8b7de6aa JB |
988 | struct vmw_event_fence_pending { |
989 | struct drm_pending_event base; | |
990 | struct drm_vmw_event_fence event; | |
991 | }; | |
992 | ||
94844cf0 | 993 | static int vmw_event_fence_action_create(struct drm_file *file_priv, |
8b7de6aa JB |
994 | struct vmw_fence_obj *fence, |
995 | uint32_t flags, | |
996 | uint64_t user_data, | |
997 | bool interruptible) | |
998 | { | |
999 | struct vmw_event_fence_pending *event; | |
2298e804 ML |
1000 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
1001 | struct drm_device *dev = fman->dev_priv->dev; | |
8b7de6aa JB |
1002 | int ret; |
1003 | ||
68c4fce7 | 1004 | event = kzalloc(sizeof(*event), GFP_KERNEL); |
8b7de6aa JB |
1005 | if (unlikely(event == NULL)) { |
1006 | DRM_ERROR("Failed to allocate an event.\n"); | |
1007 | ret = -ENOMEM; | |
6d3729ac | 1008 | goto out_no_space; |
8b7de6aa JB |
1009 | } |
1010 | ||
1011 | event->event.base.type = DRM_VMW_EVENT_FENCE_SIGNALED; | |
1012 | event->event.base.length = sizeof(*event); | |
1013 | event->event.user_data = user_data; | |
1014 | ||
6d3729ac | 1015 | ret = drm_event_reserve_init(dev, file_priv, &event->base, &event->event.base); |
8b7de6aa | 1016 | |
6d3729ac DV |
1017 | if (unlikely(ret != 0)) { |
1018 | DRM_ERROR("Failed to allocate event space for this file.\n"); | |
1019 | kfree(event); | |
1020 | goto out_no_space; | |
1021 | } | |
8b7de6aa JB |
1022 | |
1023 | if (flags & DRM_VMW_FE_FLAG_REQ_TIME) | |
1024 | ret = vmw_event_fence_action_queue(file_priv, fence, | |
1025 | &event->base, | |
1026 | &event->event.tv_sec, | |
1027 | &event->event.tv_usec, | |
1028 | interruptible); | |
1029 | else | |
1030 | ret = vmw_event_fence_action_queue(file_priv, fence, | |
1031 | &event->base, | |
1032 | NULL, | |
1033 | NULL, | |
1034 | interruptible); | |
1035 | if (ret != 0) | |
1036 | goto out_no_queue; | |
1037 | ||
89669e7a TH |
1038 | return 0; |
1039 | ||
8b7de6aa | 1040 | out_no_queue: |
6d3729ac | 1041 | drm_event_cancel_free(dev, &event->base); |
8b7de6aa JB |
1042 | out_no_space: |
1043 | return ret; | |
1044 | } | |
1045 | ||
57c5ee79 TH |
1046 | int vmw_fence_event_ioctl(struct drm_device *dev, void *data, |
1047 | struct drm_file *file_priv) | |
1048 | { | |
1049 | struct vmw_private *dev_priv = vmw_priv(dev); | |
1050 | struct drm_vmw_fence_event_arg *arg = | |
1051 | (struct drm_vmw_fence_event_arg *) data; | |
1052 | struct vmw_fence_obj *fence = NULL; | |
1053 | struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); | |
f7652afa | 1054 | struct ttm_object_file *tfile = vmw_fp->tfile; |
57c5ee79 TH |
1055 | struct drm_vmw_fence_rep __user *user_fence_rep = |
1056 | (struct drm_vmw_fence_rep __user *)(unsigned long) | |
1057 | arg->fence_rep; | |
1058 | uint32_t handle; | |
57c5ee79 TH |
1059 | int ret; |
1060 | ||
1061 | /* | |
1062 | * Look up an existing fence object, | |
1063 | * and if user-space wants a new reference, | |
1064 | * add one. | |
1065 | */ | |
1066 | if (arg->handle) { | |
1067 | struct ttm_base_object *base = | |
f7652afa TH |
1068 | vmw_fence_obj_lookup(tfile, arg->handle); |
1069 | ||
1070 | if (IS_ERR(base)) | |
1071 | return PTR_ERR(base); | |
1072 | ||
57c5ee79 TH |
1073 | fence = &(container_of(base, struct vmw_user_fence, |
1074 | base)->fence); | |
1075 | (void) vmw_fence_obj_reference(fence); | |
1076 | ||
1077 | if (user_fence_rep != NULL) { | |
fe25deb7 TH |
1078 | ret = ttm_ref_object_add(vmw_fp->tfile, base, |
1079 | TTM_REF_USAGE, NULL, false); | |
57c5ee79 TH |
1080 | if (unlikely(ret != 0)) { |
1081 | DRM_ERROR("Failed to reference a fence " | |
1082 | "object.\n"); | |
1083 | goto out_no_ref_obj; | |
1084 | } | |
1085 | handle = base->hash.key; | |
1086 | } | |
1087 | ttm_base_object_unref(&base); | |
1088 | } | |
1089 | ||
1090 | /* | |
1091 | * Create a new fence object. | |
1092 | */ | |
1093 | if (!fence) { | |
1094 | ret = vmw_execbuf_fence_commands(file_priv, dev_priv, | |
1095 | &fence, | |
1096 | (user_fence_rep) ? | |
1097 | &handle : NULL); | |
1098 | if (unlikely(ret != 0)) { | |
1099 | DRM_ERROR("Fence event failed to create fence.\n"); | |
1100 | return ret; | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | BUG_ON(fence == NULL); | |
1105 | ||
89669e7a TH |
1106 | ret = vmw_event_fence_action_create(file_priv, fence, |
1107 | arg->flags, | |
1108 | arg->user_data, | |
1109 | true); | |
57c5ee79 TH |
1110 | if (unlikely(ret != 0)) { |
1111 | if (ret != -ERESTARTSYS) | |
1112 | DRM_ERROR("Failed to attach event to fence.\n"); | |
8b7de6aa | 1113 | goto out_no_create; |
57c5ee79 TH |
1114 | } |
1115 | ||
1116 | vmw_execbuf_copy_fence_user(dev_priv, vmw_fp, 0, user_fence_rep, fence, | |
1117 | handle); | |
1118 | vmw_fence_obj_unreference(&fence); | |
1119 | return 0; | |
8b7de6aa | 1120 | out_no_create: |
57c5ee79 | 1121 | if (user_fence_rep != NULL) |
f7652afa | 1122 | ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE); |
57c5ee79 TH |
1123 | out_no_ref_obj: |
1124 | vmw_fence_obj_unreference(&fence); | |
1125 | return ret; | |
1126 | } |