Commit | Line | Data |
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f64122c1 DA |
1 | /* |
2 | * Copyright 2011 Red Hat, Inc. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * on the rights to use, copy, modify, merge, publish, distribute, sub | |
8 | * license, and/or sell copies of the Software, and to permit persons to whom | |
9 | * the Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
19 | * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
20 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
21 | */ | |
22 | #include "qxl_drv.h" | |
23 | #include "qxl_object.h" | |
2f453ed4 | 24 | #include <trace/events/fence.h> |
f64122c1 DA |
25 | |
26 | /* | |
27 | * drawable cmd cache - allocate a bunch of VRAM pages, suballocate | |
28 | * into 256 byte chunks for now - gives 16 cmds per page. | |
29 | * | |
30 | * use an ida to index into the chunks? | |
31 | */ | |
32 | /* manage releaseables */ | |
33 | /* stack them 16 high for now -drawable object is 191 */ | |
34 | #define RELEASE_SIZE 256 | |
35 | #define RELEASES_PER_BO (4096 / RELEASE_SIZE) | |
36 | /* put an alloc/dealloc surface cmd into one bo and round up to 128 */ | |
37 | #define SURFACE_RELEASE_SIZE 128 | |
38 | #define SURFACE_RELEASES_PER_BO (4096 / SURFACE_RELEASE_SIZE) | |
39 | ||
40 | static const int release_size_per_bo[] = { RELEASE_SIZE, SURFACE_RELEASE_SIZE, RELEASE_SIZE }; | |
41 | static const int releases_per_bo[] = { RELEASES_PER_BO, SURFACE_RELEASES_PER_BO, RELEASES_PER_BO }; | |
8002db63 | 42 | |
2f453ed4 ML |
43 | static const char *qxl_get_driver_name(struct fence *fence) |
44 | { | |
45 | return "qxl"; | |
46 | } | |
47 | ||
48 | static const char *qxl_get_timeline_name(struct fence *fence) | |
49 | { | |
50 | return "release"; | |
51 | } | |
52 | ||
53 | static bool qxl_nop_signaling(struct fence *fence) | |
54 | { | |
55 | /* fences are always automatically signaled, so just pretend we did this.. */ | |
56 | return true; | |
57 | } | |
58 | ||
59 | static long qxl_fence_wait(struct fence *fence, bool intr, signed long timeout) | |
60 | { | |
61 | struct qxl_device *qdev; | |
62 | struct qxl_release *release; | |
63 | int count = 0, sc = 0; | |
64 | bool have_drawable_releases; | |
65 | unsigned long cur, end = jiffies + timeout; | |
66 | ||
67 | qdev = container_of(fence->lock, struct qxl_device, release_lock); | |
68 | release = container_of(fence, struct qxl_release, base); | |
69 | have_drawable_releases = release->type == QXL_RELEASE_DRAWABLE; | |
70 | ||
71 | retry: | |
72 | sc++; | |
73 | ||
74 | if (fence_is_signaled_locked(fence)) | |
75 | goto signaled; | |
76 | ||
77 | qxl_io_notify_oom(qdev); | |
78 | ||
79 | for (count = 0; count < 11; count++) { | |
80 | if (!qxl_queue_garbage_collect(qdev, true)) | |
81 | break; | |
82 | ||
83 | if (fence_is_signaled_locked(fence)) | |
84 | goto signaled; | |
85 | } | |
86 | ||
87 | if (fence_is_signaled_locked(fence)) | |
88 | goto signaled; | |
89 | ||
90 | if (have_drawable_releases || sc < 4) { | |
91 | if (sc > 2) | |
92 | /* back off */ | |
93 | usleep_range(500, 1000); | |
94 | ||
95 | if (time_after(jiffies, end)) | |
96 | return 0; | |
97 | ||
98 | if (have_drawable_releases && sc > 300) { | |
99 | FENCE_WARN(fence, "failed to wait on release %d " | |
100 | "after spincount %d\n", | |
101 | fence->context & ~0xf0000000, sc); | |
102 | goto signaled; | |
103 | } | |
104 | goto retry; | |
105 | } | |
106 | /* | |
107 | * yeah, original sync_obj_wait gave up after 3 spins when | |
108 | * have_drawable_releases is not set. | |
109 | */ | |
110 | ||
111 | signaled: | |
112 | cur = jiffies; | |
113 | if (time_after(cur, end)) | |
114 | return 0; | |
115 | return end - cur; | |
116 | } | |
117 | ||
118 | static const struct fence_ops qxl_fence_ops = { | |
119 | .get_driver_name = qxl_get_driver_name, | |
120 | .get_timeline_name = qxl_get_timeline_name, | |
121 | .enable_signaling = qxl_nop_signaling, | |
122 | .wait = qxl_fence_wait, | |
123 | }; | |
124 | ||
8002db63 | 125 | static uint64_t |
f64122c1 DA |
126 | qxl_release_alloc(struct qxl_device *qdev, int type, |
127 | struct qxl_release **ret) | |
128 | { | |
129 | struct qxl_release *release; | |
307b9c02 | 130 | int handle; |
f64122c1 | 131 | size_t size = sizeof(*release); |
f64122c1 DA |
132 | |
133 | release = kmalloc(size, GFP_KERNEL); | |
134 | if (!release) { | |
135 | DRM_ERROR("Out of memory\n"); | |
136 | return 0; | |
137 | } | |
2f453ed4 | 138 | release->base.ops = NULL; |
f64122c1 | 139 | release->type = type; |
f64122c1 DA |
140 | release->release_offset = 0; |
141 | release->surface_release_id = 0; | |
8002db63 | 142 | INIT_LIST_HEAD(&release->bos); |
307b9c02 DA |
143 | |
144 | idr_preload(GFP_KERNEL); | |
f64122c1 | 145 | spin_lock(&qdev->release_idr_lock); |
2f453ed4 ML |
146 | handle = idr_alloc(&qdev->release_idr, release, 1, 0, GFP_NOWAIT); |
147 | release->base.seqno = ++qdev->release_seqno; | |
f64122c1 | 148 | spin_unlock(&qdev->release_idr_lock); |
307b9c02 | 149 | idr_preload_end(); |
2f453ed4 ML |
150 | if (handle < 0) { |
151 | kfree(release); | |
152 | *ret = NULL; | |
153 | return handle; | |
154 | } | |
307b9c02 | 155 | *ret = release; |
f64122c1 DA |
156 | QXL_INFO(qdev, "allocated release %lld\n", handle); |
157 | release->id = handle; | |
f64122c1 DA |
158 | return handle; |
159 | } | |
160 | ||
2f453ed4 ML |
161 | static void |
162 | qxl_release_free_list(struct qxl_release *release) | |
163 | { | |
164 | while (!list_empty(&release->bos)) { | |
165 | struct ttm_validate_buffer *entry; | |
166 | ||
167 | entry = container_of(release->bos.next, | |
168 | struct ttm_validate_buffer, head); | |
169 | ||
170 | list_del(&entry->head); | |
171 | kfree(entry); | |
172 | } | |
173 | } | |
174 | ||
f64122c1 DA |
175 | void |
176 | qxl_release_free(struct qxl_device *qdev, | |
177 | struct qxl_release *release) | |
178 | { | |
8002db63 DA |
179 | QXL_INFO(qdev, "release %d, type %d\n", release->id, |
180 | release->type); | |
f64122c1 DA |
181 | |
182 | if (release->surface_release_id) | |
183 | qxl_surface_id_dealloc(qdev, release->surface_release_id); | |
184 | ||
f64122c1 DA |
185 | spin_lock(&qdev->release_idr_lock); |
186 | idr_remove(&qdev->release_idr, release->id); | |
187 | spin_unlock(&qdev->release_idr_lock); | |
2f453ed4 ML |
188 | |
189 | if (release->base.ops) { | |
190 | WARN_ON(list_empty(&release->bos)); | |
191 | qxl_release_free_list(release); | |
192 | ||
193 | fence_signal(&release->base); | |
194 | fence_put(&release->base); | |
195 | } else { | |
196 | qxl_release_free_list(release); | |
197 | kfree(release); | |
198 | } | |
f64122c1 DA |
199 | } |
200 | ||
6d01f1f5 DA |
201 | static int qxl_release_bo_alloc(struct qxl_device *qdev, |
202 | struct qxl_bo **bo) | |
f64122c1 DA |
203 | { |
204 | int ret; | |
4f49ec92 DA |
205 | /* pin releases bo's they are too messy to evict */ |
206 | ret = qxl_bo_create(qdev, PAGE_SIZE, false, true, | |
207 | QXL_GEM_DOMAIN_VRAM, NULL, | |
f64122c1 DA |
208 | bo); |
209 | return ret; | |
210 | } | |
211 | ||
8002db63 DA |
212 | int qxl_release_list_add(struct qxl_release *release, struct qxl_bo *bo) |
213 | { | |
214 | struct qxl_bo_list *entry; | |
215 | ||
216 | list_for_each_entry(entry, &release->bos, tv.head) { | |
217 | if (entry->tv.bo == &bo->tbo) | |
218 | return 0; | |
219 | } | |
220 | ||
221 | entry = kmalloc(sizeof(struct qxl_bo_list), GFP_KERNEL); | |
222 | if (!entry) | |
223 | return -ENOMEM; | |
224 | ||
225 | qxl_bo_ref(bo); | |
226 | entry->tv.bo = &bo->tbo; | |
227 | list_add_tail(&entry->tv.head, &release->bos); | |
228 | return 0; | |
229 | } | |
230 | ||
231 | static int qxl_release_validate_bo(struct qxl_bo *bo) | |
f64122c1 DA |
232 | { |
233 | int ret; | |
8002db63 DA |
234 | |
235 | if (!bo->pin_count) { | |
236 | qxl_ttm_placement_from_domain(bo, bo->type, false); | |
237 | ret = ttm_bo_validate(&bo->tbo, &bo->placement, | |
238 | true, false); | |
f64122c1 DA |
239 | if (ret) |
240 | return ret; | |
241 | } | |
8002db63 | 242 | |
2f453ed4 ML |
243 | ret = reservation_object_reserve_shared(bo->tbo.resv); |
244 | if (ret) | |
245 | return ret; | |
246 | ||
8002db63 DA |
247 | /* allocate a surface for reserved + validated buffers */ |
248 | ret = qxl_bo_check_id(bo->gem_base.dev->dev_private, bo); | |
249 | if (ret) | |
250 | return ret; | |
f64122c1 DA |
251 | return 0; |
252 | } | |
253 | ||
8002db63 | 254 | int qxl_release_reserve_list(struct qxl_release *release, bool no_intr) |
f64122c1 | 255 | { |
8002db63 DA |
256 | int ret; |
257 | struct qxl_bo_list *entry; | |
258 | ||
259 | /* if only one object on the release its the release itself | |
260 | since these objects are pinned no need to reserve */ | |
261 | if (list_is_singular(&release->bos)) | |
262 | return 0; | |
263 | ||
58b4d720 | 264 | ret = ttm_eu_reserve_buffers(&release->ticket, &release->bos, !no_intr); |
8002db63 DA |
265 | if (ret) |
266 | return ret; | |
267 | ||
268 | list_for_each_entry(entry, &release->bos, tv.head) { | |
269 | struct qxl_bo *bo = to_qxl_bo(entry->tv.bo); | |
270 | ||
271 | ret = qxl_release_validate_bo(bo); | |
272 | if (ret) { | |
273 | ttm_eu_backoff_reservation(&release->ticket, &release->bos); | |
274 | return ret; | |
275 | } | |
276 | } | |
f64122c1 DA |
277 | return 0; |
278 | } | |
279 | ||
8002db63 | 280 | void qxl_release_backoff_reserve_list(struct qxl_release *release) |
f64122c1 | 281 | { |
8002db63 DA |
282 | /* if only one object on the release its the release itself |
283 | since these objects are pinned no need to reserve */ | |
284 | if (list_is_singular(&release->bos)) | |
285 | return; | |
286 | ||
287 | ttm_eu_backoff_reservation(&release->ticket, &release->bos); | |
f64122c1 DA |
288 | } |
289 | ||
8002db63 | 290 | |
f64122c1 DA |
291 | int qxl_alloc_surface_release_reserved(struct qxl_device *qdev, |
292 | enum qxl_surface_cmd_type surface_cmd_type, | |
293 | struct qxl_release *create_rel, | |
294 | struct qxl_release **release) | |
295 | { | |
f64122c1 DA |
296 | if (surface_cmd_type == QXL_SURFACE_CMD_DESTROY && create_rel) { |
297 | int idr_ret; | |
8002db63 | 298 | struct qxl_bo_list *entry = list_first_entry(&create_rel->bos, struct qxl_bo_list, tv.head); |
f64122c1 DA |
299 | struct qxl_bo *bo; |
300 | union qxl_release_info *info; | |
301 | ||
302 | /* stash the release after the create command */ | |
303 | idr_ret = qxl_release_alloc(qdev, QXL_RELEASE_SURFACE_CMD, release); | |
2f453ed4 ML |
304 | if (idr_ret < 0) |
305 | return idr_ret; | |
8002db63 | 306 | bo = qxl_bo_ref(to_qxl_bo(entry->tv.bo)); |
f64122c1 DA |
307 | |
308 | (*release)->release_offset = create_rel->release_offset + 64; | |
309 | ||
8002db63 | 310 | qxl_release_list_add(*release, bo); |
f64122c1 | 311 | |
f64122c1 DA |
312 | info = qxl_release_map(qdev, *release); |
313 | info->id = idr_ret; | |
314 | qxl_release_unmap(qdev, *release, info); | |
315 | ||
f64122c1 | 316 | qxl_bo_unref(&bo); |
8002db63 | 317 | return 0; |
f64122c1 DA |
318 | } |
319 | ||
320 | return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_surface_cmd), | |
321 | QXL_RELEASE_SURFACE_CMD, release, NULL); | |
322 | } | |
323 | ||
324 | int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size, | |
325 | int type, struct qxl_release **release, | |
326 | struct qxl_bo **rbo) | |
327 | { | |
328 | struct qxl_bo *bo; | |
329 | int idr_ret; | |
8002db63 | 330 | int ret = 0; |
f64122c1 DA |
331 | union qxl_release_info *info; |
332 | int cur_idx; | |
333 | ||
334 | if (type == QXL_RELEASE_DRAWABLE) | |
335 | cur_idx = 0; | |
336 | else if (type == QXL_RELEASE_SURFACE_CMD) | |
337 | cur_idx = 1; | |
338 | else if (type == QXL_RELEASE_CURSOR_CMD) | |
339 | cur_idx = 2; | |
340 | else { | |
341 | DRM_ERROR("got illegal type: %d\n", type); | |
342 | return -EINVAL; | |
343 | } | |
344 | ||
345 | idr_ret = qxl_release_alloc(qdev, type, release); | |
2f453ed4 ML |
346 | if (idr_ret < 0) { |
347 | if (rbo) | |
348 | *rbo = NULL; | |
349 | return idr_ret; | |
350 | } | |
f64122c1 DA |
351 | |
352 | mutex_lock(&qdev->release_mutex); | |
353 | if (qdev->current_release_bo_offset[cur_idx] + 1 >= releases_per_bo[cur_idx]) { | |
354 | qxl_bo_unref(&qdev->current_release_bo[cur_idx]); | |
355 | qdev->current_release_bo_offset[cur_idx] = 0; | |
356 | qdev->current_release_bo[cur_idx] = NULL; | |
357 | } | |
358 | if (!qdev->current_release_bo[cur_idx]) { | |
359 | ret = qxl_release_bo_alloc(qdev, &qdev->current_release_bo[cur_idx]); | |
360 | if (ret) { | |
361 | mutex_unlock(&qdev->release_mutex); | |
362 | return ret; | |
363 | } | |
f64122c1 DA |
364 | } |
365 | ||
366 | bo = qxl_bo_ref(qdev->current_release_bo[cur_idx]); | |
367 | ||
368 | (*release)->release_offset = qdev->current_release_bo_offset[cur_idx] * release_size_per_bo[cur_idx]; | |
369 | qdev->current_release_bo_offset[cur_idx]++; | |
370 | ||
371 | if (rbo) | |
372 | *rbo = bo; | |
373 | ||
f64122c1 | 374 | mutex_unlock(&qdev->release_mutex); |
8002db63 DA |
375 | |
376 | qxl_release_list_add(*release, bo); | |
f64122c1 DA |
377 | |
378 | info = qxl_release_map(qdev, *release); | |
379 | info->id = idr_ret; | |
380 | qxl_release_unmap(qdev, *release, info); | |
381 | ||
f64122c1 DA |
382 | qxl_bo_unref(&bo); |
383 | return ret; | |
384 | } | |
385 | ||
f64122c1 DA |
386 | struct qxl_release *qxl_release_from_id_locked(struct qxl_device *qdev, |
387 | uint64_t id) | |
388 | { | |
389 | struct qxl_release *release; | |
390 | ||
391 | spin_lock(&qdev->release_idr_lock); | |
392 | release = idr_find(&qdev->release_idr, id); | |
393 | spin_unlock(&qdev->release_idr_lock); | |
394 | if (!release) { | |
395 | DRM_ERROR("failed to find id in release_idr\n"); | |
396 | return NULL; | |
397 | } | |
8002db63 | 398 | |
f64122c1 DA |
399 | return release; |
400 | } | |
401 | ||
402 | union qxl_release_info *qxl_release_map(struct qxl_device *qdev, | |
403 | struct qxl_release *release) | |
404 | { | |
405 | void *ptr; | |
406 | union qxl_release_info *info; | |
8002db63 DA |
407 | struct qxl_bo_list *entry = list_first_entry(&release->bos, struct qxl_bo_list, tv.head); |
408 | struct qxl_bo *bo = to_qxl_bo(entry->tv.bo); | |
f64122c1 DA |
409 | |
410 | ptr = qxl_bo_kmap_atomic_page(qdev, bo, release->release_offset & PAGE_SIZE); | |
8002db63 DA |
411 | if (!ptr) |
412 | return NULL; | |
f64122c1 DA |
413 | info = ptr + (release->release_offset & ~PAGE_SIZE); |
414 | return info; | |
415 | } | |
416 | ||
417 | void qxl_release_unmap(struct qxl_device *qdev, | |
418 | struct qxl_release *release, | |
419 | union qxl_release_info *info) | |
420 | { | |
8002db63 DA |
421 | struct qxl_bo_list *entry = list_first_entry(&release->bos, struct qxl_bo_list, tv.head); |
422 | struct qxl_bo *bo = to_qxl_bo(entry->tv.bo); | |
f64122c1 DA |
423 | void *ptr; |
424 | ||
425 | ptr = ((void *)info) - (release->release_offset & ~PAGE_SIZE); | |
426 | qxl_bo_kunmap_atomic_page(qdev, bo, ptr); | |
427 | } | |
8002db63 DA |
428 | |
429 | void qxl_release_fence_buffer_objects(struct qxl_release *release) | |
430 | { | |
8002db63 DA |
431 | struct ttm_buffer_object *bo; |
432 | struct ttm_bo_global *glob; | |
433 | struct ttm_bo_device *bdev; | |
434 | struct ttm_bo_driver *driver; | |
435 | struct qxl_bo *qbo; | |
2f453ed4 ML |
436 | struct ttm_validate_buffer *entry; |
437 | struct qxl_device *qdev; | |
8002db63 DA |
438 | |
439 | /* if only one object on the release its the release itself | |
440 | since these objects are pinned no need to reserve */ | |
441 | if (list_is_singular(&release->bos)) | |
442 | return; | |
443 | ||
444 | bo = list_first_entry(&release->bos, struct ttm_validate_buffer, head)->bo; | |
445 | bdev = bo->bdev; | |
2f453ed4 ML |
446 | qdev = container_of(bdev, struct qxl_device, mman.bdev); |
447 | ||
448 | /* | |
449 | * Since we never really allocated a context and we don't want to conflict, | |
450 | * set the highest bits. This will break if we really allow exporting of dma-bufs. | |
451 | */ | |
452 | fence_init(&release->base, &qxl_fence_ops, &qdev->release_lock, | |
453 | release->id | 0xf0000000, release->base.seqno); | |
454 | trace_fence_emit(&release->base); | |
455 | ||
8002db63 DA |
456 | driver = bdev->driver; |
457 | glob = bo->glob; | |
458 | ||
459 | spin_lock(&glob->lru_lock); | |
2f453ed4 ML |
460 | /* acquire release_lock to protect bo->resv->fence and its contents */ |
461 | spin_lock(&qdev->release_lock); | |
8002db63 DA |
462 | |
463 | list_for_each_entry(entry, &release->bos, head) { | |
464 | bo = entry->bo; | |
465 | qbo = to_qxl_bo(bo); | |
466 | ||
2f453ed4 | 467 | reservation_object_add_shared_fence(bo->resv, &release->base); |
8002db63 | 468 | ttm_bo_add_to_lru(bo); |
c7523083 | 469 | __ttm_bo_unreserve(bo); |
8002db63 | 470 | } |
2f453ed4 | 471 | spin_unlock(&qdev->release_lock); |
8002db63 DA |
472 | spin_unlock(&glob->lru_lock); |
473 | ww_acquire_fini(&release->ticket); | |
474 | } | |
475 |