1 | /* |
2 | * Copyright (c) 2016 Intel Corporation |
3 | * |
4 | * Permission to use, copy, modify, distribute, and sell this software and its |
5 | * documentation for any purpose is hereby granted without fee, provided that |
6 | * the above copyright notice appear in all copies and that both that copyright |
7 | * notice and this permission notice appear in supporting documentation, and |
8 | * that the name of the copyright holders not be used in advertising or |
9 | * publicity pertaining to distribution of the software without specific, |
10 | * written prior permission. The copyright holders make no representations |
11 | * about the suitability of this software for any purpose. It is provided "as |
12 | * is" without express or implied warranty. |
13 | * |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
20 | * OF THIS SOFTWARE. |
21 | */ |
22 | |
23 | #include <linux/uaccess.h> |
24 | |
25 | #include <drm/drm_drv.h> |
26 | #include <drm/drm_encoder.h> |
27 | #include <drm/drm_file.h> |
28 | #include <drm/drm_framebuffer.h> |
29 | #include <drm/drm_managed.h> |
30 | #include <drm/drm_mode_config.h> |
31 | #include <drm/drm_print.h> |
32 | #include <linux/dma-resv.h> |
33 | |
34 | #include "drm_crtc_internal.h" |
35 | #include "drm_internal.h" |
36 | |
37 | int drm_modeset_register_all(struct drm_device *dev) |
38 | { |
39 | int ret; |
40 | |
41 | ret = drm_plane_register_all(dev); |
42 | if (ret) |
43 | goto err_plane; |
44 | |
45 | ret = drm_crtc_register_all(dev); |
46 | if (ret) |
47 | goto err_crtc; |
48 | |
49 | ret = drm_encoder_register_all(dev); |
50 | if (ret) |
51 | goto err_encoder; |
52 | |
53 | ret = drm_connector_register_all(dev); |
54 | if (ret) |
55 | goto err_connector; |
56 | |
57 | return 0; |
58 | |
59 | err_connector: |
60 | drm_encoder_unregister_all(dev); |
61 | err_encoder: |
62 | drm_crtc_unregister_all(dev); |
63 | err_crtc: |
64 | drm_plane_unregister_all(dev); |
65 | err_plane: |
66 | return ret; |
67 | } |
68 | |
69 | void drm_modeset_unregister_all(struct drm_device *dev) |
70 | { |
71 | drm_connector_unregister_all(dev); |
72 | drm_encoder_unregister_all(dev); |
73 | drm_crtc_unregister_all(dev); |
74 | drm_plane_unregister_all(dev); |
75 | } |
76 | |
77 | /** |
78 | * drm_mode_getresources - get graphics configuration |
79 | * @dev: drm device for the ioctl |
80 | * @data: data pointer for the ioctl |
81 | * @file_priv: drm file for the ioctl call |
82 | * |
83 | * Construct a set of configuration description structures and return |
84 | * them to the user, including CRTC, connector and framebuffer configuration. |
85 | * |
86 | * Called by the user via ioctl. |
87 | * |
88 | * Returns: |
89 | * Zero on success, negative errno on failure. |
90 | */ |
91 | int drm_mode_getresources(struct drm_device *dev, void *data, |
92 | struct drm_file *file_priv) |
93 | { |
94 | struct drm_mode_card_res *card_res = data; |
95 | struct drm_framebuffer *fb; |
96 | struct drm_connector *connector; |
97 | struct drm_crtc *crtc; |
98 | struct drm_encoder *encoder; |
99 | int count, ret = 0; |
100 | uint32_t __user *fb_id; |
101 | uint32_t __user *crtc_id; |
102 | uint32_t __user *connector_id; |
103 | uint32_t __user *encoder_id; |
104 | struct drm_connector_list_iter conn_iter; |
105 | |
106 | if (!drm_core_check_feature(dev, feature: DRIVER_MODESET)) |
107 | return -EOPNOTSUPP; |
108 | |
109 | mutex_lock(&file_priv->fbs_lock); |
110 | count = 0; |
111 | fb_id = u64_to_user_ptr(card_res->fb_id_ptr); |
112 | list_for_each_entry(fb, &file_priv->fbs, filp_head) { |
113 | if (count < card_res->count_fbs && |
114 | put_user(fb->base.id, fb_id + count)) { |
115 | mutex_unlock(lock: &file_priv->fbs_lock); |
116 | return -EFAULT; |
117 | } |
118 | count++; |
119 | } |
120 | card_res->count_fbs = count; |
121 | mutex_unlock(lock: &file_priv->fbs_lock); |
122 | |
123 | card_res->max_height = dev->mode_config.max_height; |
124 | card_res->min_height = dev->mode_config.min_height; |
125 | card_res->max_width = dev->mode_config.max_width; |
126 | card_res->min_width = dev->mode_config.min_width; |
127 | |
128 | count = 0; |
129 | crtc_id = u64_to_user_ptr(card_res->crtc_id_ptr); |
130 | drm_for_each_crtc(crtc, dev) { |
131 | if (drm_lease_held(file_priv, id: crtc->base.id)) { |
132 | if (count < card_res->count_crtcs && |
133 | put_user(crtc->base.id, crtc_id + count)) |
134 | return -EFAULT; |
135 | count++; |
136 | } |
137 | } |
138 | card_res->count_crtcs = count; |
139 | |
140 | count = 0; |
141 | encoder_id = u64_to_user_ptr(card_res->encoder_id_ptr); |
142 | drm_for_each_encoder(encoder, dev) { |
143 | if (count < card_res->count_encoders && |
144 | put_user(encoder->base.id, encoder_id + count)) |
145 | return -EFAULT; |
146 | count++; |
147 | } |
148 | card_res->count_encoders = count; |
149 | |
150 | drm_connector_list_iter_begin(dev, iter: &conn_iter); |
151 | count = 0; |
152 | connector_id = u64_to_user_ptr(card_res->connector_id_ptr); |
153 | drm_for_each_connector_iter(connector, &conn_iter) { |
154 | /* only expose writeback connectors if userspace understands them */ |
155 | if (!file_priv->writeback_connectors && |
156 | (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)) |
157 | continue; |
158 | |
159 | if (drm_lease_held(file_priv, id: connector->base.id)) { |
160 | if (count < card_res->count_connectors && |
161 | put_user(connector->base.id, connector_id + count)) { |
162 | drm_connector_list_iter_end(iter: &conn_iter); |
163 | return -EFAULT; |
164 | } |
165 | count++; |
166 | } |
167 | } |
168 | card_res->count_connectors = count; |
169 | drm_connector_list_iter_end(iter: &conn_iter); |
170 | |
171 | return ret; |
172 | } |
173 | |
174 | /** |
175 | * drm_mode_config_reset - call ->reset callbacks |
176 | * @dev: drm device |
177 | * |
178 | * This functions calls all the crtc's, encoder's and connector's ->reset |
179 | * callback. Drivers can use this in e.g. their driver load or resume code to |
180 | * reset hardware and software state. |
181 | */ |
182 | void drm_mode_config_reset(struct drm_device *dev) |
183 | { |
184 | struct drm_crtc *crtc; |
185 | struct drm_plane *plane; |
186 | struct drm_encoder *encoder; |
187 | struct drm_connector *connector; |
188 | struct drm_connector_list_iter conn_iter; |
189 | |
190 | drm_for_each_plane(plane, dev) |
191 | if (plane->funcs->reset) |
192 | plane->funcs->reset(plane); |
193 | |
194 | drm_for_each_crtc(crtc, dev) |
195 | if (crtc->funcs->reset) |
196 | crtc->funcs->reset(crtc); |
197 | |
198 | drm_for_each_encoder(encoder, dev) |
199 | if (encoder->funcs && encoder->funcs->reset) |
200 | encoder->funcs->reset(encoder); |
201 | |
202 | drm_connector_list_iter_begin(dev, iter: &conn_iter); |
203 | drm_for_each_connector_iter(connector, &conn_iter) |
204 | if (connector->funcs->reset) |
205 | connector->funcs->reset(connector); |
206 | drm_connector_list_iter_end(iter: &conn_iter); |
207 | } |
208 | EXPORT_SYMBOL(drm_mode_config_reset); |
209 | |
210 | /* |
211 | * Global properties |
212 | */ |
213 | static const struct drm_prop_enum_list drm_plane_type_enum_list[] = { |
214 | { DRM_PLANE_TYPE_OVERLAY, "Overlay" }, |
215 | { DRM_PLANE_TYPE_PRIMARY, "Primary" }, |
216 | { DRM_PLANE_TYPE_CURSOR, "Cursor" }, |
217 | }; |
218 | |
219 | static int drm_mode_create_standard_properties(struct drm_device *dev) |
220 | { |
221 | struct drm_property *prop; |
222 | int ret; |
223 | |
224 | ret = drm_connector_create_standard_properties(dev); |
225 | if (ret) |
226 | return ret; |
227 | |
228 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
229 | name: "type" , props: drm_plane_type_enum_list, |
230 | ARRAY_SIZE(drm_plane_type_enum_list)); |
231 | if (!prop) |
232 | return -ENOMEM; |
233 | dev->mode_config.plane_type_property = prop; |
234 | |
235 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
236 | name: "SRC_X" , min: 0, UINT_MAX); |
237 | if (!prop) |
238 | return -ENOMEM; |
239 | dev->mode_config.prop_src_x = prop; |
240 | |
241 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
242 | name: "SRC_Y" , min: 0, UINT_MAX); |
243 | if (!prop) |
244 | return -ENOMEM; |
245 | dev->mode_config.prop_src_y = prop; |
246 | |
247 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
248 | name: "SRC_W" , min: 0, UINT_MAX); |
249 | if (!prop) |
250 | return -ENOMEM; |
251 | dev->mode_config.prop_src_w = prop; |
252 | |
253 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
254 | name: "SRC_H" , min: 0, UINT_MAX); |
255 | if (!prop) |
256 | return -ENOMEM; |
257 | dev->mode_config.prop_src_h = prop; |
258 | |
259 | prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, |
260 | name: "CRTC_X" , INT_MIN, INT_MAX); |
261 | if (!prop) |
262 | return -ENOMEM; |
263 | dev->mode_config.prop_crtc_x = prop; |
264 | |
265 | prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, |
266 | name: "CRTC_Y" , INT_MIN, INT_MAX); |
267 | if (!prop) |
268 | return -ENOMEM; |
269 | dev->mode_config.prop_crtc_y = prop; |
270 | |
271 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
272 | name: "CRTC_W" , min: 0, INT_MAX); |
273 | if (!prop) |
274 | return -ENOMEM; |
275 | dev->mode_config.prop_crtc_w = prop; |
276 | |
277 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
278 | name: "CRTC_H" , min: 0, INT_MAX); |
279 | if (!prop) |
280 | return -ENOMEM; |
281 | dev->mode_config.prop_crtc_h = prop; |
282 | |
283 | prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, |
284 | name: "FB_ID" , DRM_MODE_OBJECT_FB); |
285 | if (!prop) |
286 | return -ENOMEM; |
287 | dev->mode_config.prop_fb_id = prop; |
288 | |
289 | prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, |
290 | name: "IN_FENCE_FD" , min: -1, INT_MAX); |
291 | if (!prop) |
292 | return -ENOMEM; |
293 | dev->mode_config.prop_in_fence_fd = prop; |
294 | |
295 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
296 | name: "OUT_FENCE_PTR" , min: 0, U64_MAX); |
297 | if (!prop) |
298 | return -ENOMEM; |
299 | dev->mode_config.prop_out_fence_ptr = prop; |
300 | |
301 | prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, |
302 | name: "CRTC_ID" , DRM_MODE_OBJECT_CRTC); |
303 | if (!prop) |
304 | return -ENOMEM; |
305 | dev->mode_config.prop_crtc_id = prop; |
306 | |
307 | prop = drm_property_create(dev, |
308 | DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, |
309 | name: "FB_DAMAGE_CLIPS" , num_values: 0); |
310 | if (!prop) |
311 | return -ENOMEM; |
312 | dev->mode_config.prop_fb_damage_clips = prop; |
313 | |
314 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC, |
315 | name: "ACTIVE" ); |
316 | if (!prop) |
317 | return -ENOMEM; |
318 | dev->mode_config.prop_active = prop; |
319 | |
320 | prop = drm_property_create(dev, |
321 | DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, |
322 | name: "MODE_ID" , num_values: 0); |
323 | if (!prop) |
324 | return -ENOMEM; |
325 | dev->mode_config.prop_mode_id = prop; |
326 | |
327 | prop = drm_property_create_bool(dev, flags: 0, |
328 | name: "VRR_ENABLED" ); |
329 | if (!prop) |
330 | return -ENOMEM; |
331 | dev->mode_config.prop_vrr_enabled = prop; |
332 | |
333 | prop = drm_property_create(dev, |
334 | DRM_MODE_PROP_BLOB, |
335 | name: "DEGAMMA_LUT" , num_values: 0); |
336 | if (!prop) |
337 | return -ENOMEM; |
338 | dev->mode_config.degamma_lut_property = prop; |
339 | |
340 | prop = drm_property_create_range(dev, |
341 | DRM_MODE_PROP_IMMUTABLE, |
342 | name: "DEGAMMA_LUT_SIZE" , min: 0, UINT_MAX); |
343 | if (!prop) |
344 | return -ENOMEM; |
345 | dev->mode_config.degamma_lut_size_property = prop; |
346 | |
347 | prop = drm_property_create(dev, |
348 | DRM_MODE_PROP_BLOB, |
349 | name: "CTM" , num_values: 0); |
350 | if (!prop) |
351 | return -ENOMEM; |
352 | dev->mode_config.ctm_property = prop; |
353 | |
354 | prop = drm_property_create(dev, |
355 | DRM_MODE_PROP_BLOB, |
356 | name: "GAMMA_LUT" , num_values: 0); |
357 | if (!prop) |
358 | return -ENOMEM; |
359 | dev->mode_config.gamma_lut_property = prop; |
360 | |
361 | prop = drm_property_create_range(dev, |
362 | DRM_MODE_PROP_IMMUTABLE, |
363 | name: "GAMMA_LUT_SIZE" , min: 0, UINT_MAX); |
364 | if (!prop) |
365 | return -ENOMEM; |
366 | dev->mode_config.gamma_lut_size_property = prop; |
367 | |
368 | prop = drm_property_create(dev, |
369 | DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_BLOB, |
370 | name: "IN_FORMATS" , num_values: 0); |
371 | if (!prop) |
372 | return -ENOMEM; |
373 | dev->mode_config.modifiers_property = prop; |
374 | |
375 | return 0; |
376 | } |
377 | |
378 | static void drm_mode_config_init_release(struct drm_device *dev, void *ptr) |
379 | { |
380 | drm_mode_config_cleanup(dev); |
381 | } |
382 | |
383 | /** |
384 | * drmm_mode_config_init - managed DRM mode_configuration structure |
385 | * initialization |
386 | * @dev: DRM device |
387 | * |
388 | * Initialize @dev's mode_config structure, used for tracking the graphics |
389 | * configuration of @dev. |
390 | * |
391 | * Since this initializes the modeset locks, no locking is possible. Which is no |
392 | * problem, since this should happen single threaded at init time. It is the |
393 | * driver's problem to ensure this guarantee. |
394 | * |
395 | * Cleanup is automatically handled through registering drm_mode_config_cleanup |
396 | * with drmm_add_action(). |
397 | * |
398 | * Returns: 0 on success, negative error value on failure. |
399 | */ |
400 | int drmm_mode_config_init(struct drm_device *dev) |
401 | { |
402 | int ret; |
403 | |
404 | mutex_init(&dev->mode_config.mutex); |
405 | drm_modeset_lock_init(lock: &dev->mode_config.connection_mutex); |
406 | mutex_init(&dev->mode_config.idr_mutex); |
407 | mutex_init(&dev->mode_config.fb_lock); |
408 | mutex_init(&dev->mode_config.blob_lock); |
409 | INIT_LIST_HEAD(list: &dev->mode_config.fb_list); |
410 | INIT_LIST_HEAD(list: &dev->mode_config.crtc_list); |
411 | INIT_LIST_HEAD(list: &dev->mode_config.connector_list); |
412 | INIT_LIST_HEAD(list: &dev->mode_config.encoder_list); |
413 | INIT_LIST_HEAD(list: &dev->mode_config.property_list); |
414 | INIT_LIST_HEAD(list: &dev->mode_config.property_blob_list); |
415 | INIT_LIST_HEAD(list: &dev->mode_config.plane_list); |
416 | INIT_LIST_HEAD(list: &dev->mode_config.privobj_list); |
417 | idr_init_base(idr: &dev->mode_config.object_idr, base: 1); |
418 | idr_init_base(idr: &dev->mode_config.tile_idr, base: 1); |
419 | ida_init(ida: &dev->mode_config.connector_ida); |
420 | spin_lock_init(&dev->mode_config.connector_list_lock); |
421 | |
422 | init_llist_head(list: &dev->mode_config.connector_free_list); |
423 | INIT_WORK(&dev->mode_config.connector_free_work, drm_connector_free_work_fn); |
424 | |
425 | ret = drm_mode_create_standard_properties(dev); |
426 | if (ret) { |
427 | drm_mode_config_cleanup(dev); |
428 | return ret; |
429 | } |
430 | |
431 | /* Just to be sure */ |
432 | dev->mode_config.num_fb = 0; |
433 | dev->mode_config.num_connector = 0; |
434 | dev->mode_config.num_crtc = 0; |
435 | dev->mode_config.num_encoder = 0; |
436 | dev->mode_config.num_total_plane = 0; |
437 | |
438 | if (IS_ENABLED(CONFIG_LOCKDEP)) { |
439 | struct drm_modeset_acquire_ctx modeset_ctx; |
440 | struct ww_acquire_ctx resv_ctx; |
441 | struct dma_resv resv; |
442 | int ret; |
443 | |
444 | dma_resv_init(obj: &resv); |
445 | |
446 | drm_modeset_acquire_init(ctx: &modeset_ctx, flags: 0); |
447 | ret = drm_modeset_lock(lock: &dev->mode_config.connection_mutex, |
448 | ctx: &modeset_ctx); |
449 | if (ret == -EDEADLK) |
450 | ret = drm_modeset_backoff(ctx: &modeset_ctx); |
451 | |
452 | ww_acquire_init(ctx: &resv_ctx, ww_class: &reservation_ww_class); |
453 | ret = dma_resv_lock(obj: &resv, ctx: &resv_ctx); |
454 | if (ret == -EDEADLK) |
455 | dma_resv_lock_slow(obj: &resv, ctx: &resv_ctx); |
456 | |
457 | dma_resv_unlock(obj: &resv); |
458 | ww_acquire_fini(ctx: &resv_ctx); |
459 | |
460 | drm_modeset_drop_locks(ctx: &modeset_ctx); |
461 | drm_modeset_acquire_fini(ctx: &modeset_ctx); |
462 | dma_resv_fini(obj: &resv); |
463 | } |
464 | |
465 | return drmm_add_action_or_reset(dev, drm_mode_config_init_release, |
466 | NULL); |
467 | } |
468 | EXPORT_SYMBOL(drmm_mode_config_init); |
469 | |
470 | /** |
471 | * drm_mode_config_cleanup - free up DRM mode_config info |
472 | * @dev: DRM device |
473 | * |
474 | * Free up all the connectors and CRTCs associated with this DRM device, then |
475 | * free up the framebuffers and associated buffer objects. |
476 | * |
477 | * Note that since this /should/ happen single-threaded at driver/device |
478 | * teardown time, no locking is required. It's the driver's job to ensure that |
479 | * this guarantee actually holds true. |
480 | * |
481 | * FIXME: With the managed drmm_mode_config_init() it is no longer necessary for |
482 | * drivers to explicitly call this function. |
483 | */ |
484 | void drm_mode_config_cleanup(struct drm_device *dev) |
485 | { |
486 | struct drm_connector *connector; |
487 | struct drm_connector_list_iter conn_iter; |
488 | struct drm_crtc *crtc, *ct; |
489 | struct drm_encoder *encoder, *enct; |
490 | struct drm_framebuffer *fb, *fbt; |
491 | struct drm_property *property, *pt; |
492 | struct drm_property_blob *blob, *bt; |
493 | struct drm_plane *plane, *plt; |
494 | |
495 | list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, |
496 | head) { |
497 | encoder->funcs->destroy(encoder); |
498 | } |
499 | |
500 | drm_connector_list_iter_begin(dev, iter: &conn_iter); |
501 | drm_for_each_connector_iter(connector, &conn_iter) { |
502 | /* drm_connector_list_iter holds an full reference to the |
503 | * current connector itself, which means it is inherently safe |
504 | * against unreferencing the current connector - but not against |
505 | * deleting it right away. */ |
506 | drm_connector_put(connector); |
507 | } |
508 | drm_connector_list_iter_end(iter: &conn_iter); |
509 | /* connector_iter drops references in a work item. */ |
510 | flush_work(work: &dev->mode_config.connector_free_work); |
511 | if (WARN_ON(!list_empty(&dev->mode_config.connector_list))) { |
512 | drm_connector_list_iter_begin(dev, iter: &conn_iter); |
513 | drm_for_each_connector_iter(connector, &conn_iter) |
514 | DRM_ERROR("connector %s leaked!\n" , connector->name); |
515 | drm_connector_list_iter_end(iter: &conn_iter); |
516 | } |
517 | |
518 | list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, |
519 | head) { |
520 | drm_property_destroy(dev, property); |
521 | } |
522 | |
523 | list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, |
524 | head) { |
525 | plane->funcs->destroy(plane); |
526 | } |
527 | |
528 | list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { |
529 | crtc->funcs->destroy(crtc); |
530 | } |
531 | |
532 | list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, |
533 | head_global) { |
534 | drm_property_blob_put(blob); |
535 | } |
536 | |
537 | /* |
538 | * Single-threaded teardown context, so it's not required to grab the |
539 | * fb_lock to protect against concurrent fb_list access. Contrary, it |
540 | * would actually deadlock with the drm_framebuffer_cleanup function. |
541 | * |
542 | * Also, if there are any framebuffers left, that's a driver leak now, |
543 | * so politely WARN about this. |
544 | */ |
545 | WARN_ON(!list_empty(&dev->mode_config.fb_list)); |
546 | list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { |
547 | struct drm_printer p = drm_debug_printer(prefix: "[leaked fb]" ); |
548 | |
549 | drm_printf(p: &p, f: "framebuffer[%u]:\n" , fb->base.id); |
550 | drm_framebuffer_print_info(p: &p, indent: 1, fb); |
551 | drm_framebuffer_free(kref: &fb->base.refcount); |
552 | } |
553 | |
554 | ida_destroy(ida: &dev->mode_config.connector_ida); |
555 | idr_destroy(&dev->mode_config.tile_idr); |
556 | idr_destroy(&dev->mode_config.object_idr); |
557 | drm_modeset_lock_fini(lock: &dev->mode_config.connection_mutex); |
558 | } |
559 | EXPORT_SYMBOL(drm_mode_config_cleanup); |
560 | |
561 | static u32 full_encoder_mask(struct drm_device *dev) |
562 | { |
563 | struct drm_encoder *encoder; |
564 | u32 encoder_mask = 0; |
565 | |
566 | drm_for_each_encoder(encoder, dev) |
567 | encoder_mask |= drm_encoder_mask(encoder); |
568 | |
569 | return encoder_mask; |
570 | } |
571 | |
572 | /* |
573 | * For some reason we want the encoder itself included in |
574 | * possible_clones. Make life easy for drivers by allowing them |
575 | * to leave possible_clones unset if no cloning is possible. |
576 | */ |
577 | static void fixup_encoder_possible_clones(struct drm_encoder *encoder) |
578 | { |
579 | if (encoder->possible_clones == 0) |
580 | encoder->possible_clones = drm_encoder_mask(encoder); |
581 | } |
582 | |
583 | static void validate_encoder_possible_clones(struct drm_encoder *encoder) |
584 | { |
585 | struct drm_device *dev = encoder->dev; |
586 | u32 encoder_mask = full_encoder_mask(dev); |
587 | struct drm_encoder *other; |
588 | |
589 | drm_for_each_encoder(other, dev) { |
590 | WARN(!!(encoder->possible_clones & drm_encoder_mask(other)) != |
591 | !!(other->possible_clones & drm_encoder_mask(encoder)), |
592 | "possible_clones mismatch: " |
593 | "[ENCODER:%d:%s] mask=0x%x possible_clones=0x%x vs. " |
594 | "[ENCODER:%d:%s] mask=0x%x possible_clones=0x%x\n" , |
595 | encoder->base.id, encoder->name, |
596 | drm_encoder_mask(encoder), encoder->possible_clones, |
597 | other->base.id, other->name, |
598 | drm_encoder_mask(other), other->possible_clones); |
599 | } |
600 | |
601 | WARN((encoder->possible_clones & drm_encoder_mask(encoder)) == 0 || |
602 | (encoder->possible_clones & ~encoder_mask) != 0, |
603 | "Bogus possible_clones: " |
604 | "[ENCODER:%d:%s] possible_clones=0x%x (full encoder mask=0x%x)\n" , |
605 | encoder->base.id, encoder->name, |
606 | encoder->possible_clones, encoder_mask); |
607 | } |
608 | |
609 | static u32 full_crtc_mask(struct drm_device *dev) |
610 | { |
611 | struct drm_crtc *crtc; |
612 | u32 crtc_mask = 0; |
613 | |
614 | drm_for_each_crtc(crtc, dev) |
615 | crtc_mask |= drm_crtc_mask(crtc); |
616 | |
617 | return crtc_mask; |
618 | } |
619 | |
620 | static void validate_encoder_possible_crtcs(struct drm_encoder *encoder) |
621 | { |
622 | u32 crtc_mask = full_crtc_mask(dev: encoder->dev); |
623 | |
624 | WARN((encoder->possible_crtcs & crtc_mask) == 0 || |
625 | (encoder->possible_crtcs & ~crtc_mask) != 0, |
626 | "Bogus possible_crtcs: " |
627 | "[ENCODER:%d:%s] possible_crtcs=0x%x (full crtc mask=0x%x)\n" , |
628 | encoder->base.id, encoder->name, |
629 | encoder->possible_crtcs, crtc_mask); |
630 | } |
631 | |
632 | void drm_mode_config_validate(struct drm_device *dev) |
633 | { |
634 | struct drm_encoder *encoder; |
635 | struct drm_crtc *crtc; |
636 | struct drm_plane *plane; |
637 | u32 primary_with_crtc = 0, cursor_with_crtc = 0; |
638 | unsigned int num_primary = 0; |
639 | |
640 | if (!drm_core_check_feature(dev, feature: DRIVER_MODESET)) |
641 | return; |
642 | |
643 | drm_for_each_encoder(encoder, dev) |
644 | fixup_encoder_possible_clones(encoder); |
645 | |
646 | drm_for_each_encoder(encoder, dev) { |
647 | validate_encoder_possible_clones(encoder); |
648 | validate_encoder_possible_crtcs(encoder); |
649 | } |
650 | |
651 | drm_for_each_crtc(crtc, dev) { |
652 | WARN(!crtc->primary, "Missing primary plane on [CRTC:%d:%s]\n" , |
653 | crtc->base.id, crtc->name); |
654 | |
655 | WARN(crtc->cursor && crtc->funcs->cursor_set, |
656 | "[CRTC:%d:%s] must not have both a cursor plane and a cursor_set func" , |
657 | crtc->base.id, crtc->name); |
658 | WARN(crtc->cursor && crtc->funcs->cursor_set2, |
659 | "[CRTC:%d:%s] must not have both a cursor plane and a cursor_set2 func" , |
660 | crtc->base.id, crtc->name); |
661 | WARN(crtc->cursor && crtc->funcs->cursor_move, |
662 | "[CRTC:%d:%s] must not have both a cursor plane and a cursor_move func" , |
663 | crtc->base.id, crtc->name); |
664 | |
665 | if (crtc->primary) { |
666 | WARN(!(crtc->primary->possible_crtcs & drm_crtc_mask(crtc)), |
667 | "Bogus primary plane possible_crtcs: [PLANE:%d:%s] must be compatible with [CRTC:%d:%s]\n" , |
668 | crtc->primary->base.id, crtc->primary->name, |
669 | crtc->base.id, crtc->name); |
670 | WARN(primary_with_crtc & drm_plane_mask(crtc->primary), |
671 | "Primary plane [PLANE:%d:%s] used for multiple CRTCs" , |
672 | crtc->primary->base.id, crtc->primary->name); |
673 | primary_with_crtc |= drm_plane_mask(plane: crtc->primary); |
674 | } |
675 | if (crtc->cursor) { |
676 | WARN(!(crtc->cursor->possible_crtcs & drm_crtc_mask(crtc)), |
677 | "Bogus cursor plane possible_crtcs: [PLANE:%d:%s] must be compatible with [CRTC:%d:%s]\n" , |
678 | crtc->cursor->base.id, crtc->cursor->name, |
679 | crtc->base.id, crtc->name); |
680 | WARN(cursor_with_crtc & drm_plane_mask(crtc->cursor), |
681 | "Cursor plane [PLANE:%d:%s] used for multiple CRTCs" , |
682 | crtc->cursor->base.id, crtc->cursor->name); |
683 | cursor_with_crtc |= drm_plane_mask(plane: crtc->cursor); |
684 | } |
685 | } |
686 | |
687 | drm_for_each_plane(plane, dev) { |
688 | if (plane->type == DRM_PLANE_TYPE_PRIMARY) |
689 | num_primary++; |
690 | } |
691 | |
692 | WARN(num_primary != dev->mode_config.num_crtc, |
693 | "Must have as many primary planes as there are CRTCs, but have %u primary planes and %u CRTCs" , |
694 | num_primary, dev->mode_config.num_crtc); |
695 | } |
696 | |