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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
331
332
333
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343
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 list_del_init(&fb->filp_head);
408 drm_framebuffer_remove(fb);
409 }
410}
411
412
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416
417
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419
420
421
422
423
424
425int drm_mode_rmfb(struct drm_device *dev, u32 fb_id,
426 struct drm_file *file_priv)
427{
428 struct drm_framebuffer *fb = NULL;
429 struct drm_framebuffer *fbl = NULL;
430 int found = 0;
431
432 if (!drm_core_check_feature(dev, DRIVER_MODESET))
433 return -EOPNOTSUPP;
434
435 fb = drm_framebuffer_lookup(dev, file_priv, fb_id);
436 if (!fb)
437 return -ENOENT;
438
439 mutex_lock(&file_priv->fbs_lock);
440 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
441 if (fb == fbl)
442 found = 1;
443 if (!found) {
444 mutex_unlock(&file_priv->fbs_lock);
445 goto fail_unref;
446 }
447
448 list_del_init(&fb->filp_head);
449 mutex_unlock(&file_priv->fbs_lock);
450
451
452 drm_framebuffer_put(fb);
453
454
455
456
457
458
459
460
461 if (drm_framebuffer_read_refcount(fb) > 1) {
462 struct drm_mode_rmfb_work arg;
463
464 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
465 INIT_LIST_HEAD(&arg.fbs);
466 list_add_tail(&fb->filp_head, &arg.fbs);
467
468 schedule_work(&arg.work);
469 flush_work(&arg.work);
470 destroy_work_on_stack(&arg.work);
471 } else
472 drm_framebuffer_put(fb);
473
474 return 0;
475
476fail_unref:
477 drm_framebuffer_put(fb);
478 return -ENOENT;
479}
480
481int drm_mode_rmfb_ioctl(struct drm_device *dev,
482 void *data, struct drm_file *file_priv)
483{
484 uint32_t *fb_id = data;
485
486 return drm_mode_rmfb(dev, *fb_id, file_priv);
487}
488
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501
502int drm_mode_getfb(struct drm_device *dev,
503 void *data, struct drm_file *file_priv)
504{
505 struct drm_mode_fb_cmd *r = data;
506 struct drm_framebuffer *fb;
507 int ret;
508
509 if (!drm_core_check_feature(dev, DRIVER_MODESET))
510 return -EOPNOTSUPP;
511
512 fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
513 if (!fb)
514 return -ENOENT;
515
516
517 if (fb->format->num_planes > 1) {
518 ret = -EINVAL;
519 goto out;
520 }
521
522 if (!fb->funcs->create_handle) {
523 ret = -ENODEV;
524 goto out;
525 }
526
527 r->height = fb->height;
528 r->width = fb->width;
529 r->depth = fb->format->depth;
530 r->bpp = fb->format->cpp[0] * 8;
531 r->pitch = fb->pitches[0];
532
533
534
535
536
537
538 if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) {
539 r->handle = 0;
540 ret = 0;
541 goto out;
542 }
543
544 ret = fb->funcs->create_handle(fb, file_priv, &r->handle);
545
546out:
547 drm_framebuffer_put(fb);
548 return ret;
549}
550
551
552
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562
563
564int drm_mode_getfb2_ioctl(struct drm_device *dev,
565 void *data, struct drm_file *file_priv)
566{
567 struct drm_mode_fb_cmd2 *r = data;
568 struct drm_framebuffer *fb;
569 unsigned int i;
570 int ret;
571
572 if (!drm_core_check_feature(dev, DRIVER_MODESET))
573 return -EINVAL;
574
575 fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
576 if (!fb)
577 return -ENOENT;
578
579
580
581
582
583 if (!fb->obj[0] &&
584 (fb->format->num_planes > 1 || !fb->funcs->create_handle)) {
585 ret = -ENODEV;
586 goto out;
587 }
588
589 r->height = fb->height;
590 r->width = fb->width;
591 r->pixel_format = fb->format->format;
592
593 r->flags = 0;
594 if (dev->mode_config.allow_fb_modifiers)
595 r->flags |= DRM_MODE_FB_MODIFIERS;
596
597 for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
598 r->handles[i] = 0;
599 r->pitches[i] = 0;
600 r->offsets[i] = 0;
601 r->modifier[i] = 0;
602 }
603
604 for (i = 0; i < fb->format->num_planes; i++) {
605 r->pitches[i] = fb->pitches[i];
606 r->offsets[i] = fb->offsets[i];
607 if (dev->mode_config.allow_fb_modifiers)
608 r->modifier[i] = fb->modifier;
609 }
610
611
612
613
614
615
616 if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) {
617 ret = 0;
618 goto out;
619 }
620
621 for (i = 0; i < fb->format->num_planes; i++) {
622 int j;
623
624
625
626
627 for (j = 0; j < i; j++) {
628 if (fb->obj[i] == fb->obj[j]) {
629 r->handles[i] = r->handles[j];
630 break;
631 }
632 }
633
634 if (r->handles[i])
635 continue;
636
637 if (fb->obj[i]) {
638 ret = drm_gem_handle_create(file_priv, fb->obj[i],
639 &r->handles[i]);
640 } else {
641 WARN_ON(i > 0);
642 ret = fb->funcs->create_handle(fb, file_priv,
643 &r->handles[i]);
644 }
645
646 if (ret != 0)
647 goto out;
648 }
649
650out:
651 if (ret != 0) {
652
653 for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
654 int j;
655
656 if (r->handles[i])
657 drm_gem_handle_delete(file_priv, r->handles[i]);
658
659
660
661
662 for (j = i + 1; j < ARRAY_SIZE(r->handles); j++) {
663 if (r->handles[j] == r->handles[i])
664 r->handles[j] = 0;
665 }
666 }
667 }
668
669 drm_framebuffer_put(fb);
670 return ret;
671}
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691
692int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
693 void *data, struct drm_file *file_priv)
694{
695 struct drm_clip_rect __user *clips_ptr;
696 struct drm_clip_rect *clips = NULL;
697 struct drm_mode_fb_dirty_cmd *r = data;
698 struct drm_framebuffer *fb;
699 unsigned flags;
700 int num_clips;
701 int ret;
702
703 if (!drm_core_check_feature(dev, DRIVER_MODESET))
704 return -EOPNOTSUPP;
705
706 fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
707 if (!fb)
708 return -ENOENT;
709
710 num_clips = r->num_clips;
711 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
712
713 if (!num_clips != !clips_ptr) {
714 ret = -EINVAL;
715 goto out_err1;
716 }
717
718 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
719
720
721 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
722 ret = -EINVAL;
723 goto out_err1;
724 }
725
726 if (num_clips && clips_ptr) {
727 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
728 ret = -EINVAL;
729 goto out_err1;
730 }
731 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
732 if (!clips) {
733 ret = -ENOMEM;
734 goto out_err1;
735 }
736
737 ret = copy_from_user(clips, clips_ptr,
738 num_clips * sizeof(*clips));
739 if (ret) {
740 ret = -EFAULT;
741 goto out_err2;
742 }
743 }
744
745 if (fb->funcs->dirty) {
746 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
747 clips, num_clips);
748 } else {
749 ret = -ENOSYS;
750 }
751
752out_err2:
753 kfree(clips);
754out_err1:
755 drm_framebuffer_put(fb);
756
757 return ret;
758}
759
760
761
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763
764
765
766
767
768
769
770
771void drm_fb_release(struct drm_file *priv)
772{
773 struct drm_framebuffer *fb, *tfb;
774 struct drm_mode_rmfb_work arg;
775
776 INIT_LIST_HEAD(&arg.fbs);
777
778
779
780
781
782
783
784
785
786
787
788 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
789 if (drm_framebuffer_read_refcount(fb) > 1) {
790 list_move_tail(&fb->filp_head, &arg.fbs);
791 } else {
792 list_del_init(&fb->filp_head);
793
794
795 drm_framebuffer_put(fb);
796 }
797 }
798
799 if (!list_empty(&arg.fbs)) {
800 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
801
802 schedule_work(&arg.work);
803 flush_work(&arg.work);
804 destroy_work_on_stack(&arg.work);
805 }
806}
807
808void drm_framebuffer_free(struct kref *kref)
809{
810 struct drm_framebuffer *fb =
811 container_of(kref, struct drm_framebuffer, base.refcount);
812 struct drm_device *dev = fb->dev;
813
814
815
816
817
818 drm_mode_object_unregister(dev, &fb->base);
819
820 fb->funcs->destroy(fb);
821}
822
823
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839
840
841int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
842 const struct drm_framebuffer_funcs *funcs)
843{
844 int ret;
845
846 if (WARN_ON_ONCE(fb->dev != dev || !fb->format))
847 return -EINVAL;
848
849 INIT_LIST_HEAD(&fb->filp_head);
850
851 fb->funcs = funcs;
852 strcpy(fb->comm, current->comm);
853
854 ret = __drm_mode_object_add(dev, &fb->base, DRM_MODE_OBJECT_FB,
855 false, drm_framebuffer_free);
856 if (ret)
857 goto out;
858
859 mutex_lock(&dev->mode_config.fb_lock);
860 dev->mode_config.num_fb++;
861 list_add(&fb->head, &dev->mode_config.fb_list);
862 mutex_unlock(&dev->mode_config.fb_lock);
863
864 drm_mode_object_register(dev, &fb->base);
865out:
866 return ret;
867}
868EXPORT_SYMBOL(drm_framebuffer_init);
869
870
871
872
873
874
875
876
877
878
879
880struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
881 struct drm_file *file_priv,
882 uint32_t id)
883{
884 struct drm_mode_object *obj;
885 struct drm_framebuffer *fb = NULL;
886
887 obj = __drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_FB);
888 if (obj)
889 fb = obj_to_fb(obj);
890 return fb;
891}
892EXPORT_SYMBOL(drm_framebuffer_lookup);
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
909{
910 struct drm_device *dev;
911
912 if (!fb)
913 return;
914
915 dev = fb->dev;
916
917
918 drm_mode_object_unregister(dev, &fb->base);
919}
920EXPORT_SYMBOL(drm_framebuffer_unregister_private);
921
922
923
924
925
926
927
928
929
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931
932
933
934
935
936
937
938
939void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
940{
941 struct drm_device *dev = fb->dev;
942
943 mutex_lock(&dev->mode_config.fb_lock);
944 list_del(&fb->head);
945 dev->mode_config.num_fb--;
946 mutex_unlock(&dev->mode_config.fb_lock);
947}
948EXPORT_SYMBOL(drm_framebuffer_cleanup);
949
950static int atomic_remove_fb(struct drm_framebuffer *fb)
951{
952 struct drm_modeset_acquire_ctx ctx;
953 struct drm_device *dev = fb->dev;
954 struct drm_atomic_state *state;
955 struct drm_plane *plane;
956 struct drm_connector *conn __maybe_unused;
957 struct drm_connector_state *conn_state;
958 int i, ret;
959 unsigned plane_mask;
960 bool disable_crtcs = false;
961
962retry_disable:
963 drm_modeset_acquire_init(&ctx, 0);
964
965 state = drm_atomic_state_alloc(dev);
966 if (!state) {
967 ret = -ENOMEM;
968 goto out;
969 }
970 state->acquire_ctx = &ctx;
971
972retry:
973 plane_mask = 0;
974 ret = drm_modeset_lock_all_ctx(dev, &ctx);
975 if (ret)
976 goto unlock;
977
978 drm_for_each_plane(plane, dev) {
979 struct drm_plane_state *plane_state;
980
981 if (plane->state->fb != fb)
982 continue;
983
984 plane_state = drm_atomic_get_plane_state(state, plane);
985 if (IS_ERR(plane_state)) {
986 ret = PTR_ERR(plane_state);
987 goto unlock;
988 }
989
990 if (disable_crtcs && plane_state->crtc->primary == plane) {
991 struct drm_crtc_state *crtc_state;
992
993 crtc_state = drm_atomic_get_existing_crtc_state(state, plane_state->crtc);
994
995 ret = drm_atomic_add_affected_connectors(state, plane_state->crtc);
996 if (ret)
997 goto unlock;
998
999 crtc_state->active = false;
1000 ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
1001 if (ret)
1002 goto unlock;
1003 }
1004
1005 drm_atomic_set_fb_for_plane(plane_state, NULL);
1006 ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
1007 if (ret)
1008 goto unlock;
1009
1010 plane_mask |= drm_plane_mask(plane);
1011 }
1012
1013
1014 for_each_new_connector_in_state(state, conn, conn_state, i) {
1015 ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
1016
1017 if (ret)
1018 goto unlock;
1019 }
1020
1021 if (plane_mask)
1022 ret = drm_atomic_commit(state);
1023
1024unlock:
1025 if (ret == -EDEADLK) {
1026 drm_atomic_state_clear(state);
1027 drm_modeset_backoff(&ctx);
1028 goto retry;
1029 }
1030
1031 drm_atomic_state_put(state);
1032
1033out:
1034 drm_modeset_drop_locks(&ctx);
1035 drm_modeset_acquire_fini(&ctx);
1036
1037 if (ret == -EINVAL && !disable_crtcs) {
1038 disable_crtcs = true;
1039 goto retry_disable;
1040 }
1041
1042 return ret;
1043}
1044
1045static void legacy_remove_fb(struct drm_framebuffer *fb)
1046{
1047 struct drm_device *dev = fb->dev;
1048 struct drm_crtc *crtc;
1049 struct drm_plane *plane;
1050
1051 drm_modeset_lock_all(dev);
1052
1053 drm_for_each_crtc(crtc, dev) {
1054 if (crtc->primary->fb == fb) {
1055
1056 if (drm_crtc_force_disable(crtc))
1057 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
1058 }
1059 }
1060
1061 drm_for_each_plane(plane, dev) {
1062 if (plane->fb == fb)
1063 drm_plane_force_disable(plane);
1064 }
1065 drm_modeset_unlock_all(dev);
1066}
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080void drm_framebuffer_remove(struct drm_framebuffer *fb)
1081{
1082 struct drm_device *dev;
1083
1084 if (!fb)
1085 return;
1086
1087 dev = fb->dev;
1088
1089 WARN_ON(!list_empty(&fb->filp_head));
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106 if (drm_framebuffer_read_refcount(fb) > 1) {
1107 if (drm_drv_uses_atomic_modeset(dev)) {
1108 int ret = atomic_remove_fb(fb);
1109
1110 WARN(ret, "atomic remove_fb failed with %i\n", ret);
1111 } else
1112 legacy_remove_fb(fb);
1113 }
1114
1115 drm_framebuffer_put(fb);
1116}
1117EXPORT_SYMBOL(drm_framebuffer_remove);
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128int drm_framebuffer_plane_width(int width,
1129 const struct drm_framebuffer *fb, int plane)
1130{
1131 if (plane >= fb->format->num_planes)
1132 return 0;
1133
1134 return fb_plane_width(width, fb->format, plane);
1135}
1136EXPORT_SYMBOL(drm_framebuffer_plane_width);
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147int drm_framebuffer_plane_height(int height,
1148 const struct drm_framebuffer *fb, int plane)
1149{
1150 if (plane >= fb->format->num_planes)
1151 return 0;
1152
1153 return fb_plane_height(height, fb->format, plane);
1154}
1155EXPORT_SYMBOL(drm_framebuffer_plane_height);
1156
1157void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
1158 const struct drm_framebuffer *fb)
1159{
1160 unsigned int i;
1161
1162 drm_printf_indent(p, indent, "allocated by = %s\n", fb->comm);
1163 drm_printf_indent(p, indent, "refcount=%u\n",
1164 drm_framebuffer_read_refcount(fb));
1165 drm_printf_indent(p, indent, "format=%p4cc\n", &fb->format->format);
1166 drm_printf_indent(p, indent, "modifier=0x%llx\n", fb->modifier);
1167 drm_printf_indent(p, indent, "size=%ux%u\n", fb->width, fb->height);
1168 drm_printf_indent(p, indent, "layers:\n");
1169
1170 for (i = 0; i < fb->format->num_planes; i++) {
1171 drm_printf_indent(p, indent + 1, "size[%u]=%dx%d\n", i,
1172 drm_framebuffer_plane_width(fb->width, fb, i),
1173 drm_framebuffer_plane_height(fb->height, fb, i));
1174 drm_printf_indent(p, indent + 1, "pitch[%u]=%u\n", i, fb->pitches[i]);
1175 drm_printf_indent(p, indent + 1, "offset[%u]=%u\n", i, fb->offsets[i]);
1176 drm_printf_indent(p, indent + 1, "obj[%u]:%s\n", i,
1177 fb->obj[i] ? "" : "(null)");
1178 if (fb->obj[i])
1179 drm_gem_print_info(p, indent + 2, fb->obj[i]);
1180 }
1181}
1182
1183#ifdef CONFIG_DEBUG_FS
1184static int drm_framebuffer_info(struct seq_file *m, void *data)
1185{
1186 struct drm_info_node *node = m->private;
1187 struct drm_device *dev = node->minor->dev;
1188 struct drm_printer p = drm_seq_file_printer(m);
1189 struct drm_framebuffer *fb;
1190
1191 mutex_lock(&dev->mode_config.fb_lock);
1192 drm_for_each_fb(fb, dev) {
1193 drm_printf(&p, "framebuffer[%u]:\n", fb->base.id);
1194 drm_framebuffer_print_info(&p, 1, fb);
1195 }
1196 mutex_unlock(&dev->mode_config.fb_lock);
1197
1198 return 0;
1199}
1200
1201static const struct drm_info_list drm_framebuffer_debugfs_list[] = {
1202 { "framebuffer", drm_framebuffer_info, 0 },
1203};
1204
1205void drm_framebuffer_debugfs_init(struct drm_minor *minor)
1206{
1207 drm_debugfs_create_files(drm_framebuffer_debugfs_list,
1208 ARRAY_SIZE(drm_framebuffer_debugfs_list),
1209 minor->debugfs_root, minor);
1210}
1211#endif
1212