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23#include <linux/export.h>
24#include <linux/uaccess.h>
25
26#include <drm/drm_atomic.h>
27#include <drm/drm_atomic_uapi.h>
28#include <drm/drm_auth.h>
29#include <drm/drm_debugfs.h>
30#include <drm/drm_drv.h>
31#include <drm/drm_file.h>
32#include <drm/drm_fourcc.h>
33#include <drm/drm_framebuffer.h>
34#include <drm/drm_gem.h>
35#include <drm/drm_print.h>
36#include <drm/drm_util.h>
37
38#include "drm_crtc_internal.h"
39#include "drm_internal.h"
40
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74
75
76int drm_framebuffer_check_src_coords(uint32_t src_x, uint32_t src_y,
77 uint32_t src_w, uint32_t src_h,
78 const struct drm_framebuffer *fb)
79{
80 unsigned int fb_width, fb_height;
81
82 fb_width = fb->width << 16;
83 fb_height = fb->height << 16;
84
85
86 if (src_w > fb_width ||
87 src_x > fb_width - src_w ||
88 src_h > fb_height ||
89 src_y > fb_height - src_h) {
90 DRM_DEBUG_KMS("Invalid source coordinates "
91 "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
92 src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
93 src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
94 src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
95 src_y >> 16, ((src_y & 0xffff) * 15625) >> 10,
96 fb->width, fb->height);
97 return -ENOSPC;
98 }
99
100 return 0;
101}
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117int drm_mode_addfb(struct drm_device *dev, struct drm_mode_fb_cmd *or,
118 struct drm_file *file_priv)
119{
120 struct drm_mode_fb_cmd2 r = {};
121 int ret;
122
123 if (!drm_core_check_feature(dev, DRIVER_MODESET))
124 return -EOPNOTSUPP;
125
126 r.pixel_format = drm_driver_legacy_fb_format(dev, or->bpp, or->depth);
127 if (r.pixel_format == DRM_FORMAT_INVALID) {
128 DRM_DEBUG("bad {bpp:%d, depth:%d}\n", or->bpp, or->depth);
129 return -EINVAL;
130 }
131
132
133 r.fb_id = or->fb_id;
134 r.width = or->width;
135 r.height = or->height;
136 r.pitches[0] = or->pitch;
137 r.handles[0] = or->handle;
138
139 ret = drm_mode_addfb2(dev, &r, file_priv);
140 if (ret)
141 return ret;
142
143 or->fb_id = r.fb_id;
144
145 return 0;
146}
147
148int drm_mode_addfb_ioctl(struct drm_device *dev,
149 void *data, struct drm_file *file_priv)
150{
151 return drm_mode_addfb(dev, data, file_priv);
152}
153
154static int fb_plane_width(int width,
155 const struct drm_format_info *format, int plane)
156{
157 if (plane == 0)
158 return width;
159
160 return DIV_ROUND_UP(width, format->hsub);
161}
162
163static int fb_plane_height(int height,
164 const struct drm_format_info *format, int plane)
165{
166 if (plane == 0)
167 return height;
168
169 return DIV_ROUND_UP(height, format->vsub);
170}
171
172static int framebuffer_check(struct drm_device *dev,
173 const struct drm_mode_fb_cmd2 *r)
174{
175 const struct drm_format_info *info;
176 int i;
177
178
179 if (!__drm_format_info(r->pixel_format)) {
180 DRM_DEBUG_KMS("bad framebuffer format %p4cc\n",
181 &r->pixel_format);
182 return -EINVAL;
183 }
184
185 if (r->width == 0) {
186 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
187 return -EINVAL;
188 }
189
190 if (r->height == 0) {
191 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
192 return -EINVAL;
193 }
194
195
196 info = drm_get_format_info(dev, r);
197
198 for (i = 0; i < info->num_planes; i++) {
199 unsigned int width = fb_plane_width(r->width, info, i);
200 unsigned int height = fb_plane_height(r->height, info, i);
201 unsigned int block_size = info->char_per_block[i];
202 u64 min_pitch = drm_format_info_min_pitch(info, i, width);
203
204 if (!block_size && (r->modifier[i] == DRM_FORMAT_MOD_LINEAR)) {
205 DRM_DEBUG_KMS("Format requires non-linear modifier for plane %d\n", i);
206 return -EINVAL;
207 }
208
209 if (!r->handles[i]) {
210 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
211 return -EINVAL;
212 }
213
214 if (min_pitch > UINT_MAX)
215 return -ERANGE;
216
217 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
218 return -ERANGE;
219
220 if (block_size && r->pitches[i] < min_pitch) {
221 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
222 return -EINVAL;
223 }
224
225 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
226 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
227 r->modifier[i], i);
228 return -EINVAL;
229 }
230
231 if (r->flags & DRM_MODE_FB_MODIFIERS &&
232 r->modifier[i] != r->modifier[0]) {
233 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
234 r->modifier[i], i);
235 return -EINVAL;
236 }
237
238
239 switch (r->modifier[i]) {
240 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
241
242
243
244 if (r->pixel_format != DRM_FORMAT_NV12 ||
245 width % 128 || height % 32 ||
246 r->pitches[i] % 128) {
247 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
248 return -EINVAL;
249 }
250 break;
251
252 default:
253 break;
254 }
255 }
256
257 for (i = info->num_planes; i < 4; i++) {
258 if (r->modifier[i]) {
259 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
260 return -EINVAL;
261 }
262
263
264 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
265 continue;
266
267 if (r->handles[i]) {
268 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
269 return -EINVAL;
270 }
271
272 if (r->pitches[i]) {
273 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
274 return -EINVAL;
275 }
276
277 if (r->offsets[i]) {
278 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
279 return -EINVAL;
280 }
281 }
282
283 return 0;
284}
285
286struct drm_framebuffer *
287drm_internal_framebuffer_create(struct drm_device *dev,
288 const struct drm_mode_fb_cmd2 *r,
289 struct drm_file *file_priv)
290{
291 struct drm_mode_config *config = &dev->mode_config;
292 struct drm_framebuffer *fb;
293 int ret;
294
295 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
296 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
297 return ERR_PTR(-EINVAL);
298 }
299
300 if ((config->min_width > r->width) || (r->width > config->max_width)) {
301 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
302 r->width, config->min_width, config->max_width);
303 return ERR_PTR(-EINVAL);
304 }
305 if ((config->min_height > r->height) || (r->height > config->max_height)) {
306 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
307 r->height, config->min_height, config->max_height);
308 return ERR_PTR(-EINVAL);
309 }
310
311 if (r->flags & DRM_MODE_FB_MODIFIERS &&
312 !dev->mode_config.allow_fb_modifiers) {
313 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
314 return ERR_PTR(-EINVAL);
315 }
316
317 ret = framebuffer_check(dev, r);
318 if (ret)
319 return ERR_PTR(ret);
320
321 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
322 if (IS_ERR(fb)) {
323 DRM_DEBUG_KMS("could not create framebuffer\n");
324 return fb;
325 }
326
327 return fb;
328}
329EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_internal_framebuffer_create);
330
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332
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340
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344
345
346int drm_mode_addfb2(struct drm_device *dev,
347 void *data, struct drm_file *file_priv)
348{
349 struct drm_mode_fb_cmd2 *r = data;
350 struct drm_framebuffer *fb;
351
352 if (!drm_core_check_feature(dev, DRIVER_MODESET))
353 return -EOPNOTSUPP;
354
355 fb = drm_internal_framebuffer_create(dev, r, file_priv);
356 if (IS_ERR(fb))
357 return PTR_ERR(fb);
358
359 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
360 r->fb_id = fb->base.id;
361
362
363 mutex_lock(&file_priv->fbs_lock);
364 list_add(&fb->filp_head, &file_priv->fbs);
365 mutex_unlock(&file_priv->fbs_lock);
366
367 return 0;
368}
369
370int drm_mode_addfb2_ioctl(struct drm_device *dev,
371 void *data, struct drm_file *file_priv)
372{
373#ifdef __BIG_ENDIAN
374 if (!dev->mode_config.quirk_addfb_prefer_host_byte_order) {
375
376
377
378
379
380
381
382
383
384
385
386
387 DRM_DEBUG_KMS("addfb2 broken on bigendian");
388 return -EOPNOTSUPP;
389 }
390#endif
391 return drm_mode_addfb2(dev, data, file_priv);
392}
393
394struct drm_mode_rmfb_work {
395 struct work_struct work;
396 struct list_head fbs;
397};
398
399static void drm_mode_rmfb_work_fn(struct work_struct *w)
400{
401 struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
402
403 while (!list_empty(&arg->fbs)) {
404 struct drm_framebuffer *fb =
405 list_first_entry(&arg->fbs, typeof(*fb), filp_head);
406
407 drm_dbg_kms(fb->dev,
408 "Removing [FB:%d] from all active usage due to RMFB ioctl\n",
409 fb->base.id);
410 list_del_init(&fb->filp_head);
411 drm_framebuffer_remove(fb);
412 }
413}
414
415
416
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419
420
421
422
423
424
425
426
427
428int drm_mode_rmfb(struct drm_device *dev, u32 fb_id,
429 struct drm_file *file_priv)
430{
431 struct drm_framebuffer *fb = NULL;
432 struct drm_framebuffer *fbl = NULL;
433 int found = 0;
434
435 if (!drm_core_check_feature(dev, DRIVER_MODESET))
436 return -EOPNOTSUPP;
437
438 fb = drm_framebuffer_lookup(dev, file_priv, fb_id);
439 if (!fb)
440 return -ENOENT;
441
442 mutex_lock(&file_priv->fbs_lock);
443 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
444 if (fb == fbl)
445 found = 1;
446 if (!found) {
447 mutex_unlock(&file_priv->fbs_lock);
448 goto fail_unref;
449 }
450
451 list_del_init(&fb->filp_head);
452 mutex_unlock(&file_priv->fbs_lock);
453
454
455 drm_framebuffer_put(fb);
456
457
458
459
460
461
462
463
464 if (drm_framebuffer_read_refcount(fb) > 1) {
465 struct drm_mode_rmfb_work arg;
466
467 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
468 INIT_LIST_HEAD(&arg.fbs);
469 list_add_tail(&fb->filp_head, &arg.fbs);
470
471 schedule_work(&arg.work);
472 flush_work(&arg.work);
473 destroy_work_on_stack(&arg.work);
474 } else
475 drm_framebuffer_put(fb);
476
477 return 0;
478
479fail_unref:
480 drm_framebuffer_put(fb);
481 return -ENOENT;
482}
483
484int drm_mode_rmfb_ioctl(struct drm_device *dev,
485 void *data, struct drm_file *file_priv)
486{
487 uint32_t *fb_id = data;
488
489 return drm_mode_rmfb(dev, *fb_id, file_priv);
490}
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504
505int drm_mode_getfb(struct drm_device *dev,
506 void *data, struct drm_file *file_priv)
507{
508 struct drm_mode_fb_cmd *r = data;
509 struct drm_framebuffer *fb;
510 int ret;
511
512 if (!drm_core_check_feature(dev, DRIVER_MODESET))
513 return -EOPNOTSUPP;
514
515 fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
516 if (!fb)
517 return -ENOENT;
518
519
520 if (fb->format->num_planes > 1) {
521 ret = -EINVAL;
522 goto out;
523 }
524
525 if (!fb->funcs->create_handle) {
526 ret = -ENODEV;
527 goto out;
528 }
529
530 r->height = fb->height;
531 r->width = fb->width;
532 r->depth = fb->format->depth;
533 r->bpp = fb->format->cpp[0] * 8;
534 r->pitch = fb->pitches[0];
535
536
537
538
539
540
541 if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) {
542 r->handle = 0;
543 ret = 0;
544 goto out;
545 }
546
547 ret = fb->funcs->create_handle(fb, file_priv, &r->handle);
548
549out:
550 drm_framebuffer_put(fb);
551 return ret;
552}
553
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565
566
567int drm_mode_getfb2_ioctl(struct drm_device *dev,
568 void *data, struct drm_file *file_priv)
569{
570 struct drm_mode_fb_cmd2 *r = data;
571 struct drm_framebuffer *fb;
572 unsigned int i;
573 int ret;
574
575 if (!drm_core_check_feature(dev, DRIVER_MODESET))
576 return -EINVAL;
577
578 fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
579 if (!fb)
580 return -ENOENT;
581
582
583
584
585
586 if (!fb->obj[0] &&
587 (fb->format->num_planes > 1 || !fb->funcs->create_handle)) {
588 ret = -ENODEV;
589 goto out;
590 }
591
592 r->height = fb->height;
593 r->width = fb->width;
594 r->pixel_format = fb->format->format;
595
596 r->flags = 0;
597 if (dev->mode_config.allow_fb_modifiers)
598 r->flags |= DRM_MODE_FB_MODIFIERS;
599
600 for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
601 r->handles[i] = 0;
602 r->pitches[i] = 0;
603 r->offsets[i] = 0;
604 r->modifier[i] = 0;
605 }
606
607 for (i = 0; i < fb->format->num_planes; i++) {
608 r->pitches[i] = fb->pitches[i];
609 r->offsets[i] = fb->offsets[i];
610 if (dev->mode_config.allow_fb_modifiers)
611 r->modifier[i] = fb->modifier;
612 }
613
614
615
616
617
618
619 if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) {
620 ret = 0;
621 goto out;
622 }
623
624 for (i = 0; i < fb->format->num_planes; i++) {
625 int j;
626
627
628
629
630 for (j = 0; j < i; j++) {
631 if (fb->obj[i] == fb->obj[j]) {
632 r->handles[i] = r->handles[j];
633 break;
634 }
635 }
636
637 if (r->handles[i])
638 continue;
639
640 if (fb->obj[i]) {
641 ret = drm_gem_handle_create(file_priv, fb->obj[i],
642 &r->handles[i]);
643 } else {
644 WARN_ON(i > 0);
645 ret = fb->funcs->create_handle(fb, file_priv,
646 &r->handles[i]);
647 }
648
649 if (ret != 0)
650 goto out;
651 }
652
653out:
654 if (ret != 0) {
655
656 for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
657 int j;
658
659 if (r->handles[i])
660 drm_gem_handle_delete(file_priv, r->handles[i]);
661
662
663
664
665 for (j = i + 1; j < ARRAY_SIZE(r->handles); j++) {
666 if (r->handles[j] == r->handles[i])
667 r->handles[j] = 0;
668 }
669 }
670 }
671
672 drm_framebuffer_put(fb);
673 return ret;
674}
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694
695int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
696 void *data, struct drm_file *file_priv)
697{
698 struct drm_clip_rect __user *clips_ptr;
699 struct drm_clip_rect *clips = NULL;
700 struct drm_mode_fb_dirty_cmd *r = data;
701 struct drm_framebuffer *fb;
702 unsigned flags;
703 int num_clips;
704 int ret;
705
706 if (!drm_core_check_feature(dev, DRIVER_MODESET))
707 return -EOPNOTSUPP;
708
709 fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
710 if (!fb)
711 return -ENOENT;
712
713 num_clips = r->num_clips;
714 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
715
716 if (!num_clips != !clips_ptr) {
717 ret = -EINVAL;
718 goto out_err1;
719 }
720
721 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
722
723
724 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
725 ret = -EINVAL;
726 goto out_err1;
727 }
728
729 if (num_clips && clips_ptr) {
730 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
731 ret = -EINVAL;
732 goto out_err1;
733 }
734 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
735 if (!clips) {
736 ret = -ENOMEM;
737 goto out_err1;
738 }
739
740 ret = copy_from_user(clips, clips_ptr,
741 num_clips * sizeof(*clips));
742 if (ret) {
743 ret = -EFAULT;
744 goto out_err2;
745 }
746 }
747
748 if (fb->funcs->dirty) {
749 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
750 clips, num_clips);
751 } else {
752 ret = -ENOSYS;
753 }
754
755out_err2:
756 kfree(clips);
757out_err1:
758 drm_framebuffer_put(fb);
759
760 return ret;
761}
762
763
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765
766
767
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769
770
771
772
773
774void drm_fb_release(struct drm_file *priv)
775{
776 struct drm_framebuffer *fb, *tfb;
777 struct drm_mode_rmfb_work arg;
778
779 INIT_LIST_HEAD(&arg.fbs);
780
781
782
783
784
785
786
787
788
789
790
791 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
792 if (drm_framebuffer_read_refcount(fb) > 1) {
793 list_move_tail(&fb->filp_head, &arg.fbs);
794 } else {
795 list_del_init(&fb->filp_head);
796
797
798 drm_framebuffer_put(fb);
799 }
800 }
801
802 if (!list_empty(&arg.fbs)) {
803 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
804
805 schedule_work(&arg.work);
806 flush_work(&arg.work);
807 destroy_work_on_stack(&arg.work);
808 }
809}
810
811void drm_framebuffer_free(struct kref *kref)
812{
813 struct drm_framebuffer *fb =
814 container_of(kref, struct drm_framebuffer, base.refcount);
815 struct drm_device *dev = fb->dev;
816
817
818
819
820
821 drm_mode_object_unregister(dev, &fb->base);
822
823 fb->funcs->destroy(fb);
824}
825
826
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843
844int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
845 const struct drm_framebuffer_funcs *funcs)
846{
847 int ret;
848
849 if (WARN_ON_ONCE(fb->dev != dev || !fb->format))
850 return -EINVAL;
851
852 INIT_LIST_HEAD(&fb->filp_head);
853
854 fb->funcs = funcs;
855 strcpy(fb->comm, current->comm);
856
857 ret = __drm_mode_object_add(dev, &fb->base, DRM_MODE_OBJECT_FB,
858 false, drm_framebuffer_free);
859 if (ret)
860 goto out;
861
862 mutex_lock(&dev->mode_config.fb_lock);
863 dev->mode_config.num_fb++;
864 list_add(&fb->head, &dev->mode_config.fb_list);
865 mutex_unlock(&dev->mode_config.fb_lock);
866
867 drm_mode_object_register(dev, &fb->base);
868out:
869 return ret;
870}
871EXPORT_SYMBOL(drm_framebuffer_init);
872
873
874
875
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877
878
879
880
881
882
883struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
884 struct drm_file *file_priv,
885 uint32_t id)
886{
887 struct drm_mode_object *obj;
888 struct drm_framebuffer *fb = NULL;
889
890 obj = __drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_FB);
891 if (obj)
892 fb = obj_to_fb(obj);
893 return fb;
894}
895EXPORT_SYMBOL(drm_framebuffer_lookup);
896
897
898
899
900
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902
903
904
905
906
907
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909
910
911void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
912{
913 struct drm_device *dev;
914
915 if (!fb)
916 return;
917
918 dev = fb->dev;
919
920
921 drm_mode_object_unregister(dev, &fb->base);
922}
923EXPORT_SYMBOL(drm_framebuffer_unregister_private);
924
925
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940
941
942void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
943{
944 struct drm_device *dev = fb->dev;
945
946 mutex_lock(&dev->mode_config.fb_lock);
947 list_del(&fb->head);
948 dev->mode_config.num_fb--;
949 mutex_unlock(&dev->mode_config.fb_lock);
950}
951EXPORT_SYMBOL(drm_framebuffer_cleanup);
952
953static int atomic_remove_fb(struct drm_framebuffer *fb)
954{
955 struct drm_modeset_acquire_ctx ctx;
956 struct drm_device *dev = fb->dev;
957 struct drm_atomic_state *state;
958 struct drm_plane *plane;
959 struct drm_connector *conn __maybe_unused;
960 struct drm_connector_state *conn_state;
961 int i, ret;
962 unsigned plane_mask;
963 bool disable_crtcs = false;
964
965retry_disable:
966 drm_modeset_acquire_init(&ctx, 0);
967
968 state = drm_atomic_state_alloc(dev);
969 if (!state) {
970 ret = -ENOMEM;
971 goto out;
972 }
973 state->acquire_ctx = &ctx;
974
975retry:
976 plane_mask = 0;
977 ret = drm_modeset_lock_all_ctx(dev, &ctx);
978 if (ret)
979 goto unlock;
980
981 drm_for_each_plane(plane, dev) {
982 struct drm_plane_state *plane_state;
983
984 if (plane->state->fb != fb)
985 continue;
986
987 drm_dbg_kms(dev,
988 "Disabling [PLANE:%d:%s] because [FB:%d] is removed\n",
989 plane->base.id, plane->name, fb->base.id);
990
991 plane_state = drm_atomic_get_plane_state(state, plane);
992 if (IS_ERR(plane_state)) {
993 ret = PTR_ERR(plane_state);
994 goto unlock;
995 }
996
997 if (disable_crtcs && plane_state->crtc->primary == plane) {
998 struct drm_crtc_state *crtc_state;
999
1000 drm_dbg_kms(dev,
1001 "Disabling [CRTC:%d:%s] because [FB:%d] is removed\n",
1002 plane_state->crtc->base.id,
1003 plane_state->crtc->name, fb->base.id);
1004
1005 crtc_state = drm_atomic_get_existing_crtc_state(state, plane_state->crtc);
1006
1007 ret = drm_atomic_add_affected_connectors(state, plane_state->crtc);
1008 if (ret)
1009 goto unlock;
1010
1011 crtc_state->active = false;
1012 ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
1013 if (ret)
1014 goto unlock;
1015 }
1016
1017 drm_atomic_set_fb_for_plane(plane_state, NULL);
1018 ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
1019 if (ret)
1020 goto unlock;
1021
1022 plane_mask |= drm_plane_mask(plane);
1023 }
1024
1025
1026 for_each_new_connector_in_state(state, conn, conn_state, i) {
1027 ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
1028
1029 if (ret)
1030 goto unlock;
1031 }
1032
1033 if (plane_mask)
1034 ret = drm_atomic_commit(state);
1035
1036unlock:
1037 if (ret == -EDEADLK) {
1038 drm_atomic_state_clear(state);
1039 drm_modeset_backoff(&ctx);
1040 goto retry;
1041 }
1042
1043 drm_atomic_state_put(state);
1044
1045out:
1046 drm_modeset_drop_locks(&ctx);
1047 drm_modeset_acquire_fini(&ctx);
1048
1049 if (ret == -EINVAL && !disable_crtcs) {
1050 disable_crtcs = true;
1051 goto retry_disable;
1052 }
1053
1054 return ret;
1055}
1056
1057static void legacy_remove_fb(struct drm_framebuffer *fb)
1058{
1059 struct drm_device *dev = fb->dev;
1060 struct drm_crtc *crtc;
1061 struct drm_plane *plane;
1062
1063 drm_modeset_lock_all(dev);
1064
1065 drm_for_each_crtc(crtc, dev) {
1066 if (crtc->primary->fb == fb) {
1067 drm_dbg_kms(dev,
1068 "Disabling [CRTC:%d:%s] because [FB:%d] is removed\n",
1069 crtc->base.id, crtc->name, fb->base.id);
1070
1071
1072 if (drm_crtc_force_disable(crtc))
1073 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
1074 }
1075 }
1076
1077 drm_for_each_plane(plane, dev) {
1078 if (plane->fb == fb) {
1079 drm_dbg_kms(dev,
1080 "Disabling [PLANE:%d:%s] because [FB:%d] is removed\n",
1081 plane->base.id, plane->name, fb->base.id);
1082 drm_plane_force_disable(plane);
1083 }
1084 }
1085 drm_modeset_unlock_all(dev);
1086}
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100void drm_framebuffer_remove(struct drm_framebuffer *fb)
1101{
1102 struct drm_device *dev;
1103
1104 if (!fb)
1105 return;
1106
1107 dev = fb->dev;
1108
1109 WARN_ON(!list_empty(&fb->filp_head));
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126 if (drm_framebuffer_read_refcount(fb) > 1) {
1127 if (drm_drv_uses_atomic_modeset(dev)) {
1128 int ret = atomic_remove_fb(fb);
1129
1130 WARN(ret, "atomic remove_fb failed with %i\n", ret);
1131 } else
1132 legacy_remove_fb(fb);
1133 }
1134
1135 drm_framebuffer_put(fb);
1136}
1137EXPORT_SYMBOL(drm_framebuffer_remove);
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148int drm_framebuffer_plane_width(int width,
1149 const struct drm_framebuffer *fb, int plane)
1150{
1151 if (plane >= fb->format->num_planes)
1152 return 0;
1153
1154 return fb_plane_width(width, fb->format, plane);
1155}
1156EXPORT_SYMBOL(drm_framebuffer_plane_width);
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167int drm_framebuffer_plane_height(int height,
1168 const struct drm_framebuffer *fb, int plane)
1169{
1170 if (plane >= fb->format->num_planes)
1171 return 0;
1172
1173 return fb_plane_height(height, fb->format, plane);
1174}
1175EXPORT_SYMBOL(drm_framebuffer_plane_height);
1176
1177void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
1178 const struct drm_framebuffer *fb)
1179{
1180 unsigned int i;
1181
1182 drm_printf_indent(p, indent, "allocated by = %s\n", fb->comm);
1183 drm_printf_indent(p, indent, "refcount=%u\n",
1184 drm_framebuffer_read_refcount(fb));
1185 drm_printf_indent(p, indent, "format=%p4cc\n", &fb->format->format);
1186 drm_printf_indent(p, indent, "modifier=0x%llx\n", fb->modifier);
1187 drm_printf_indent(p, indent, "size=%ux%u\n", fb->width, fb->height);
1188 drm_printf_indent(p, indent, "layers:\n");
1189
1190 for (i = 0; i < fb->format->num_planes; i++) {
1191 drm_printf_indent(p, indent + 1, "size[%u]=%dx%d\n", i,
1192 drm_framebuffer_plane_width(fb->width, fb, i),
1193 drm_framebuffer_plane_height(fb->height, fb, i));
1194 drm_printf_indent(p, indent + 1, "pitch[%u]=%u\n", i, fb->pitches[i]);
1195 drm_printf_indent(p, indent + 1, "offset[%u]=%u\n", i, fb->offsets[i]);
1196 drm_printf_indent(p, indent + 1, "obj[%u]:%s\n", i,
1197 fb->obj[i] ? "" : "(null)");
1198 if (fb->obj[i])
1199 drm_gem_print_info(p, indent + 2, fb->obj[i]);
1200 }
1201}
1202
1203#ifdef CONFIG_DEBUG_FS
1204static int drm_framebuffer_info(struct seq_file *m, void *data)
1205{
1206 struct drm_info_node *node = m->private;
1207 struct drm_device *dev = node->minor->dev;
1208 struct drm_printer p = drm_seq_file_printer(m);
1209 struct drm_framebuffer *fb;
1210
1211 mutex_lock(&dev->mode_config.fb_lock);
1212 drm_for_each_fb(fb, dev) {
1213 drm_printf(&p, "framebuffer[%u]:\n", fb->base.id);
1214 drm_framebuffer_print_info(&p, 1, fb);
1215 }
1216 mutex_unlock(&dev->mode_config.fb_lock);
1217
1218 return 0;
1219}
1220
1221static const struct drm_info_list drm_framebuffer_debugfs_list[] = {
1222 { "framebuffer", drm_framebuffer_info, 0 },
1223};
1224
1225void drm_framebuffer_debugfs_init(struct drm_minor *minor)
1226{
1227 drm_debugfs_create_files(drm_framebuffer_debugfs_list,
1228 ARRAY_SIZE(drm_framebuffer_debugfs_list),
1229 minor->debugfs_root, minor);
1230}
1231#endif
1232