Loading...
Note: File does not exist in v4.6.
1/*
2 * Copyright (C) 2014 Red Hat
3 * Copyright (C) 2014 Intel Corp.
4 * Copyright (C) 2018 Intel Corp.
5 * Copyright (c) 2020, The Linux Foundation. All rights reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 *
25 * Authors:
26 * Rob Clark <robdclark@gmail.com>
27 * Daniel Vetter <daniel.vetter@ffwll.ch>
28 */
29
30#include <drm/drm_atomic_uapi.h>
31#include <drm/drm_atomic.h>
32#include <drm/drm_framebuffer.h>
33#include <drm/drm_print.h>
34#include <drm/drm_drv.h>
35#include <drm/drm_writeback.h>
36#include <drm/drm_vblank.h>
37
38#include <linux/dma-fence.h>
39#include <linux/uaccess.h>
40#include <linux/sync_file.h>
41#include <linux/file.h>
42
43#include "drm_crtc_internal.h"
44
45/**
46 * DOC: overview
47 *
48 * This file contains the marshalling and demarshalling glue for the atomic UAPI
49 * in all its forms: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and
50 * SET_PROPERTY IOCTLs. Plus interface functions for compatibility helpers and
51 * drivers which have special needs to construct their own atomic updates, e.g.
52 * for load detect or similar.
53 */
54
55/**
56 * drm_atomic_set_mode_for_crtc - set mode for CRTC
57 * @state: the CRTC whose incoming state to update
58 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
59 *
60 * Set a mode (originating from the kernel) on the desired CRTC state and update
61 * the enable property.
62 *
63 * RETURNS:
64 * Zero on success, error code on failure. Cannot return -EDEADLK.
65 */
66int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
67 const struct drm_display_mode *mode)
68{
69 struct drm_crtc *crtc = state->crtc;
70 struct drm_mode_modeinfo umode;
71
72 /* Early return for no change. */
73 if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
74 return 0;
75
76 drm_property_blob_put(state->mode_blob);
77 state->mode_blob = NULL;
78
79 if (mode) {
80 struct drm_property_blob *blob;
81
82 drm_mode_convert_to_umode(&umode, mode);
83 blob = drm_property_create_blob(crtc->dev,
84 sizeof(umode), &umode);
85 if (IS_ERR(blob))
86 return PTR_ERR(blob);
87
88 drm_mode_copy(&state->mode, mode);
89
90 state->mode_blob = blob;
91 state->enable = true;
92 drm_dbg_atomic(crtc->dev,
93 "Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
94 mode->name, crtc->base.id, crtc->name, state);
95 } else {
96 memset(&state->mode, 0, sizeof(state->mode));
97 state->enable = false;
98 drm_dbg_atomic(crtc->dev,
99 "Set [NOMODE] for [CRTC:%d:%s] state %p\n",
100 crtc->base.id, crtc->name, state);
101 }
102
103 return 0;
104}
105EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
106
107/**
108 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
109 * @state: the CRTC whose incoming state to update
110 * @blob: pointer to blob property to use for mode
111 *
112 * Set a mode (originating from a blob property) on the desired CRTC state.
113 * This function will take a reference on the blob property for the CRTC state,
114 * and release the reference held on the state's existing mode property, if any
115 * was set.
116 *
117 * RETURNS:
118 * Zero on success, error code on failure. Cannot return -EDEADLK.
119 */
120int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
121 struct drm_property_blob *blob)
122{
123 struct drm_crtc *crtc = state->crtc;
124
125 if (blob == state->mode_blob)
126 return 0;
127
128 drm_property_blob_put(state->mode_blob);
129 state->mode_blob = NULL;
130
131 memset(&state->mode, 0, sizeof(state->mode));
132
133 if (blob) {
134 int ret;
135
136 if (blob->length != sizeof(struct drm_mode_modeinfo)) {
137 drm_dbg_atomic(crtc->dev,
138 "[CRTC:%d:%s] bad mode blob length: %zu\n",
139 crtc->base.id, crtc->name,
140 blob->length);
141 return -EINVAL;
142 }
143
144 ret = drm_mode_convert_umode(crtc->dev,
145 &state->mode, blob->data);
146 if (ret) {
147 drm_dbg_atomic(crtc->dev,
148 "[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
149 crtc->base.id, crtc->name,
150 ret, drm_get_mode_status_name(state->mode.status));
151 drm_mode_debug_printmodeline(&state->mode);
152 return -EINVAL;
153 }
154
155 state->mode_blob = drm_property_blob_get(blob);
156 state->enable = true;
157 drm_dbg_atomic(crtc->dev,
158 "Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
159 state->mode.name, crtc->base.id, crtc->name,
160 state);
161 } else {
162 state->enable = false;
163 drm_dbg_atomic(crtc->dev,
164 "Set [NOMODE] for [CRTC:%d:%s] state %p\n",
165 crtc->base.id, crtc->name, state);
166 }
167
168 return 0;
169}
170EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
171
172/**
173 * drm_atomic_set_crtc_for_plane - set CRTC for plane
174 * @plane_state: the plane whose incoming state to update
175 * @crtc: CRTC to use for the plane
176 *
177 * Changing the assigned CRTC for a plane requires us to grab the lock and state
178 * for the new CRTC, as needed. This function takes care of all these details
179 * besides updating the pointer in the state object itself.
180 *
181 * Returns:
182 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
183 * then the w/w mutex code has detected a deadlock and the entire atomic
184 * sequence must be restarted. All other errors are fatal.
185 */
186int
187drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
188 struct drm_crtc *crtc)
189{
190 struct drm_plane *plane = plane_state->plane;
191 struct drm_crtc_state *crtc_state;
192 /* Nothing to do for same crtc*/
193 if (plane_state->crtc == crtc)
194 return 0;
195 if (plane_state->crtc) {
196 crtc_state = drm_atomic_get_crtc_state(plane_state->state,
197 plane_state->crtc);
198 if (WARN_ON(IS_ERR(crtc_state)))
199 return PTR_ERR(crtc_state);
200
201 crtc_state->plane_mask &= ~drm_plane_mask(plane);
202 }
203
204 plane_state->crtc = crtc;
205
206 if (crtc) {
207 crtc_state = drm_atomic_get_crtc_state(plane_state->state,
208 crtc);
209 if (IS_ERR(crtc_state))
210 return PTR_ERR(crtc_state);
211 crtc_state->plane_mask |= drm_plane_mask(plane);
212 }
213
214 if (crtc)
215 drm_dbg_atomic(plane->dev,
216 "Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
217 plane->base.id, plane->name, plane_state,
218 crtc->base.id, crtc->name);
219 else
220 drm_dbg_atomic(plane->dev,
221 "Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
222 plane->base.id, plane->name, plane_state);
223
224 return 0;
225}
226EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
227
228/**
229 * drm_atomic_set_fb_for_plane - set framebuffer for plane
230 * @plane_state: atomic state object for the plane
231 * @fb: fb to use for the plane
232 *
233 * Changing the assigned framebuffer for a plane requires us to grab a reference
234 * to the new fb and drop the reference to the old fb, if there is one. This
235 * function takes care of all these details besides updating the pointer in the
236 * state object itself.
237 */
238void
239drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
240 struct drm_framebuffer *fb)
241{
242 struct drm_plane *plane = plane_state->plane;
243
244 if (fb)
245 drm_dbg_atomic(plane->dev,
246 "Set [FB:%d] for [PLANE:%d:%s] state %p\n",
247 fb->base.id, plane->base.id, plane->name,
248 plane_state);
249 else
250 drm_dbg_atomic(plane->dev,
251 "Set [NOFB] for [PLANE:%d:%s] state %p\n",
252 plane->base.id, plane->name, plane_state);
253
254 drm_framebuffer_assign(&plane_state->fb, fb);
255}
256EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
257
258/**
259 * drm_atomic_set_crtc_for_connector - set CRTC for connector
260 * @conn_state: atomic state object for the connector
261 * @crtc: CRTC to use for the connector
262 *
263 * Changing the assigned CRTC for a connector requires us to grab the lock and
264 * state for the new CRTC, as needed. This function takes care of all these
265 * details besides updating the pointer in the state object itself.
266 *
267 * Returns:
268 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
269 * then the w/w mutex code has detected a deadlock and the entire atomic
270 * sequence must be restarted. All other errors are fatal.
271 */
272int
273drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
274 struct drm_crtc *crtc)
275{
276 struct drm_connector *connector = conn_state->connector;
277 struct drm_crtc_state *crtc_state;
278
279 if (conn_state->crtc == crtc)
280 return 0;
281
282 if (conn_state->crtc) {
283 crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
284 conn_state->crtc);
285
286 crtc_state->connector_mask &=
287 ~drm_connector_mask(conn_state->connector);
288
289 drm_connector_put(conn_state->connector);
290 conn_state->crtc = NULL;
291 }
292
293 if (crtc) {
294 crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
295 if (IS_ERR(crtc_state))
296 return PTR_ERR(crtc_state);
297
298 crtc_state->connector_mask |=
299 drm_connector_mask(conn_state->connector);
300
301 drm_connector_get(conn_state->connector);
302 conn_state->crtc = crtc;
303
304 drm_dbg_atomic(connector->dev,
305 "Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
306 connector->base.id, connector->name,
307 conn_state, crtc->base.id, crtc->name);
308 } else {
309 drm_dbg_atomic(connector->dev,
310 "Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
311 connector->base.id, connector->name,
312 conn_state);
313 }
314
315 return 0;
316}
317EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
318
319static void set_out_fence_for_crtc(struct drm_atomic_state *state,
320 struct drm_crtc *crtc, s32 __user *fence_ptr)
321{
322 state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
323}
324
325static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
326 struct drm_crtc *crtc)
327{
328 s32 __user *fence_ptr;
329
330 fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
331 state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
332
333 return fence_ptr;
334}
335
336static int set_out_fence_for_connector(struct drm_atomic_state *state,
337 struct drm_connector *connector,
338 s32 __user *fence_ptr)
339{
340 unsigned int index = drm_connector_index(connector);
341
342 if (!fence_ptr)
343 return 0;
344
345 if (put_user(-1, fence_ptr))
346 return -EFAULT;
347
348 state->connectors[index].out_fence_ptr = fence_ptr;
349
350 return 0;
351}
352
353static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
354 struct drm_connector *connector)
355{
356 unsigned int index = drm_connector_index(connector);
357 s32 __user *fence_ptr;
358
359 fence_ptr = state->connectors[index].out_fence_ptr;
360 state->connectors[index].out_fence_ptr = NULL;
361
362 return fence_ptr;
363}
364
365static int
366drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
367 struct drm_property_blob **blob,
368 uint64_t blob_id,
369 ssize_t expected_size,
370 ssize_t expected_elem_size,
371 bool *replaced)
372{
373 struct drm_property_blob *new_blob = NULL;
374
375 if (blob_id != 0) {
376 new_blob = drm_property_lookup_blob(dev, blob_id);
377 if (new_blob == NULL)
378 return -EINVAL;
379
380 if (expected_size > 0 &&
381 new_blob->length != expected_size) {
382 drm_property_blob_put(new_blob);
383 return -EINVAL;
384 }
385 if (expected_elem_size > 0 &&
386 new_blob->length % expected_elem_size != 0) {
387 drm_property_blob_put(new_blob);
388 return -EINVAL;
389 }
390 }
391
392 *replaced |= drm_property_replace_blob(blob, new_blob);
393 drm_property_blob_put(new_blob);
394
395 return 0;
396}
397
398static int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
399 struct drm_crtc_state *state, struct drm_property *property,
400 uint64_t val)
401{
402 struct drm_device *dev = crtc->dev;
403 struct drm_mode_config *config = &dev->mode_config;
404 bool replaced = false;
405 int ret;
406
407 if (property == config->prop_active)
408 state->active = val;
409 else if (property == config->prop_mode_id) {
410 struct drm_property_blob *mode =
411 drm_property_lookup_blob(dev, val);
412 ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
413 drm_property_blob_put(mode);
414 return ret;
415 } else if (property == config->prop_vrr_enabled) {
416 state->vrr_enabled = val;
417 } else if (property == config->degamma_lut_property) {
418 ret = drm_atomic_replace_property_blob_from_id(dev,
419 &state->degamma_lut,
420 val,
421 -1, sizeof(struct drm_color_lut),
422 &replaced);
423 state->color_mgmt_changed |= replaced;
424 return ret;
425 } else if (property == config->ctm_property) {
426 ret = drm_atomic_replace_property_blob_from_id(dev,
427 &state->ctm,
428 val,
429 sizeof(struct drm_color_ctm), -1,
430 &replaced);
431 state->color_mgmt_changed |= replaced;
432 return ret;
433 } else if (property == config->gamma_lut_property) {
434 ret = drm_atomic_replace_property_blob_from_id(dev,
435 &state->gamma_lut,
436 val,
437 -1, sizeof(struct drm_color_lut),
438 &replaced);
439 state->color_mgmt_changed |= replaced;
440 return ret;
441 } else if (property == config->prop_out_fence_ptr) {
442 s32 __user *fence_ptr = u64_to_user_ptr(val);
443
444 if (!fence_ptr)
445 return 0;
446
447 if (put_user(-1, fence_ptr))
448 return -EFAULT;
449
450 set_out_fence_for_crtc(state->state, crtc, fence_ptr);
451 } else if (property == crtc->scaling_filter_property) {
452 state->scaling_filter = val;
453 } else if (crtc->funcs->atomic_set_property) {
454 return crtc->funcs->atomic_set_property(crtc, state, property, val);
455 } else {
456 drm_dbg_atomic(crtc->dev,
457 "[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
458 crtc->base.id, crtc->name,
459 property->base.id, property->name);
460 return -EINVAL;
461 }
462
463 return 0;
464}
465
466static int
467drm_atomic_crtc_get_property(struct drm_crtc *crtc,
468 const struct drm_crtc_state *state,
469 struct drm_property *property, uint64_t *val)
470{
471 struct drm_device *dev = crtc->dev;
472 struct drm_mode_config *config = &dev->mode_config;
473
474 if (property == config->prop_active)
475 *val = drm_atomic_crtc_effectively_active(state);
476 else if (property == config->prop_mode_id)
477 *val = (state->mode_blob) ? state->mode_blob->base.id : 0;
478 else if (property == config->prop_vrr_enabled)
479 *val = state->vrr_enabled;
480 else if (property == config->degamma_lut_property)
481 *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
482 else if (property == config->ctm_property)
483 *val = (state->ctm) ? state->ctm->base.id : 0;
484 else if (property == config->gamma_lut_property)
485 *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
486 else if (property == config->prop_out_fence_ptr)
487 *val = 0;
488 else if (property == crtc->scaling_filter_property)
489 *val = state->scaling_filter;
490 else if (crtc->funcs->atomic_get_property)
491 return crtc->funcs->atomic_get_property(crtc, state, property, val);
492 else
493 return -EINVAL;
494
495 return 0;
496}
497
498static int drm_atomic_plane_set_property(struct drm_plane *plane,
499 struct drm_plane_state *state, struct drm_file *file_priv,
500 struct drm_property *property, uint64_t val)
501{
502 struct drm_device *dev = plane->dev;
503 struct drm_mode_config *config = &dev->mode_config;
504 bool replaced = false;
505 int ret;
506
507 if (property == config->prop_fb_id) {
508 struct drm_framebuffer *fb;
509
510 fb = drm_framebuffer_lookup(dev, file_priv, val);
511 drm_atomic_set_fb_for_plane(state, fb);
512 if (fb)
513 drm_framebuffer_put(fb);
514 } else if (property == config->prop_in_fence_fd) {
515 if (state->fence)
516 return -EINVAL;
517
518 if (U642I64(val) == -1)
519 return 0;
520
521 state->fence = sync_file_get_fence(val);
522 if (!state->fence)
523 return -EINVAL;
524
525 } else if (property == config->prop_crtc_id) {
526 struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val);
527
528 if (val && !crtc)
529 return -EACCES;
530 return drm_atomic_set_crtc_for_plane(state, crtc);
531 } else if (property == config->prop_crtc_x) {
532 state->crtc_x = U642I64(val);
533 } else if (property == config->prop_crtc_y) {
534 state->crtc_y = U642I64(val);
535 } else if (property == config->prop_crtc_w) {
536 state->crtc_w = val;
537 } else if (property == config->prop_crtc_h) {
538 state->crtc_h = val;
539 } else if (property == config->prop_src_x) {
540 state->src_x = val;
541 } else if (property == config->prop_src_y) {
542 state->src_y = val;
543 } else if (property == config->prop_src_w) {
544 state->src_w = val;
545 } else if (property == config->prop_src_h) {
546 state->src_h = val;
547 } else if (property == plane->alpha_property) {
548 state->alpha = val;
549 } else if (property == plane->blend_mode_property) {
550 state->pixel_blend_mode = val;
551 } else if (property == plane->rotation_property) {
552 if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
553 drm_dbg_atomic(plane->dev,
554 "[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
555 plane->base.id, plane->name, val);
556 return -EINVAL;
557 }
558 state->rotation = val;
559 } else if (property == plane->zpos_property) {
560 state->zpos = val;
561 } else if (property == plane->color_encoding_property) {
562 state->color_encoding = val;
563 } else if (property == plane->color_range_property) {
564 state->color_range = val;
565 } else if (property == config->prop_fb_damage_clips) {
566 ret = drm_atomic_replace_property_blob_from_id(dev,
567 &state->fb_damage_clips,
568 val,
569 -1,
570 sizeof(struct drm_rect),
571 &replaced);
572 return ret;
573 } else if (property == plane->scaling_filter_property) {
574 state->scaling_filter = val;
575 } else if (plane->funcs->atomic_set_property) {
576 return plane->funcs->atomic_set_property(plane, state,
577 property, val);
578 } else {
579 drm_dbg_atomic(plane->dev,
580 "[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
581 plane->base.id, plane->name,
582 property->base.id, property->name);
583 return -EINVAL;
584 }
585
586 return 0;
587}
588
589static int
590drm_atomic_plane_get_property(struct drm_plane *plane,
591 const struct drm_plane_state *state,
592 struct drm_property *property, uint64_t *val)
593{
594 struct drm_device *dev = plane->dev;
595 struct drm_mode_config *config = &dev->mode_config;
596
597 if (property == config->prop_fb_id) {
598 *val = (state->fb) ? state->fb->base.id : 0;
599 } else if (property == config->prop_in_fence_fd) {
600 *val = -1;
601 } else if (property == config->prop_crtc_id) {
602 *val = (state->crtc) ? state->crtc->base.id : 0;
603 } else if (property == config->prop_crtc_x) {
604 *val = I642U64(state->crtc_x);
605 } else if (property == config->prop_crtc_y) {
606 *val = I642U64(state->crtc_y);
607 } else if (property == config->prop_crtc_w) {
608 *val = state->crtc_w;
609 } else if (property == config->prop_crtc_h) {
610 *val = state->crtc_h;
611 } else if (property == config->prop_src_x) {
612 *val = state->src_x;
613 } else if (property == config->prop_src_y) {
614 *val = state->src_y;
615 } else if (property == config->prop_src_w) {
616 *val = state->src_w;
617 } else if (property == config->prop_src_h) {
618 *val = state->src_h;
619 } else if (property == plane->alpha_property) {
620 *val = state->alpha;
621 } else if (property == plane->blend_mode_property) {
622 *val = state->pixel_blend_mode;
623 } else if (property == plane->rotation_property) {
624 *val = state->rotation;
625 } else if (property == plane->zpos_property) {
626 *val = state->zpos;
627 } else if (property == plane->color_encoding_property) {
628 *val = state->color_encoding;
629 } else if (property == plane->color_range_property) {
630 *val = state->color_range;
631 } else if (property == config->prop_fb_damage_clips) {
632 *val = (state->fb_damage_clips) ?
633 state->fb_damage_clips->base.id : 0;
634 } else if (property == plane->scaling_filter_property) {
635 *val = state->scaling_filter;
636 } else if (plane->funcs->atomic_get_property) {
637 return plane->funcs->atomic_get_property(plane, state, property, val);
638 } else {
639 return -EINVAL;
640 }
641
642 return 0;
643}
644
645static int drm_atomic_set_writeback_fb_for_connector(
646 struct drm_connector_state *conn_state,
647 struct drm_framebuffer *fb)
648{
649 int ret;
650 struct drm_connector *conn = conn_state->connector;
651
652 ret = drm_writeback_set_fb(conn_state, fb);
653 if (ret < 0)
654 return ret;
655
656 if (fb)
657 drm_dbg_atomic(conn->dev,
658 "Set [FB:%d] for connector state %p\n",
659 fb->base.id, conn_state);
660 else
661 drm_dbg_atomic(conn->dev,
662 "Set [NOFB] for connector state %p\n",
663 conn_state);
664
665 return 0;
666}
667
668static int drm_atomic_connector_set_property(struct drm_connector *connector,
669 struct drm_connector_state *state, struct drm_file *file_priv,
670 struct drm_property *property, uint64_t val)
671{
672 struct drm_device *dev = connector->dev;
673 struct drm_mode_config *config = &dev->mode_config;
674 bool replaced = false;
675 int ret;
676
677 if (property == config->prop_crtc_id) {
678 struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val);
679
680 if (val && !crtc)
681 return -EACCES;
682 return drm_atomic_set_crtc_for_connector(state, crtc);
683 } else if (property == config->dpms_property) {
684 /* setting DPMS property requires special handling, which
685 * is done in legacy setprop path for us. Disallow (for
686 * now?) atomic writes to DPMS property:
687 */
688 return -EINVAL;
689 } else if (property == config->tv_select_subconnector_property) {
690 state->tv.select_subconnector = val;
691 } else if (property == config->tv_subconnector_property) {
692 state->tv.subconnector = val;
693 } else if (property == config->tv_left_margin_property) {
694 state->tv.margins.left = val;
695 } else if (property == config->tv_right_margin_property) {
696 state->tv.margins.right = val;
697 } else if (property == config->tv_top_margin_property) {
698 state->tv.margins.top = val;
699 } else if (property == config->tv_bottom_margin_property) {
700 state->tv.margins.bottom = val;
701 } else if (property == config->tv_mode_property) {
702 state->tv.mode = val;
703 } else if (property == config->tv_brightness_property) {
704 state->tv.brightness = val;
705 } else if (property == config->tv_contrast_property) {
706 state->tv.contrast = val;
707 } else if (property == config->tv_flicker_reduction_property) {
708 state->tv.flicker_reduction = val;
709 } else if (property == config->tv_overscan_property) {
710 state->tv.overscan = val;
711 } else if (property == config->tv_saturation_property) {
712 state->tv.saturation = val;
713 } else if (property == config->tv_hue_property) {
714 state->tv.hue = val;
715 } else if (property == config->link_status_property) {
716 /* Never downgrade from GOOD to BAD on userspace's request here,
717 * only hw issues can do that.
718 *
719 * For an atomic property the userspace doesn't need to be able
720 * to understand all the properties, but needs to be able to
721 * restore the state it wants on VT switch. So if the userspace
722 * tries to change the link_status from GOOD to BAD, driver
723 * silently rejects it and returns a 0. This prevents userspace
724 * from accidentally breaking the display when it restores the
725 * state.
726 */
727 if (state->link_status != DRM_LINK_STATUS_GOOD)
728 state->link_status = val;
729 } else if (property == config->hdr_output_metadata_property) {
730 ret = drm_atomic_replace_property_blob_from_id(dev,
731 &state->hdr_output_metadata,
732 val,
733 sizeof(struct hdr_output_metadata), -1,
734 &replaced);
735 return ret;
736 } else if (property == config->aspect_ratio_property) {
737 state->picture_aspect_ratio = val;
738 } else if (property == config->content_type_property) {
739 state->content_type = val;
740 } else if (property == connector->scaling_mode_property) {
741 state->scaling_mode = val;
742 } else if (property == config->content_protection_property) {
743 if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
744 drm_dbg_kms(dev, "only drivers can set CP Enabled\n");
745 return -EINVAL;
746 }
747 state->content_protection = val;
748 } else if (property == config->hdcp_content_type_property) {
749 state->hdcp_content_type = val;
750 } else if (property == connector->colorspace_property) {
751 state->colorspace = val;
752 } else if (property == config->writeback_fb_id_property) {
753 struct drm_framebuffer *fb;
754 int ret;
755
756 fb = drm_framebuffer_lookup(dev, file_priv, val);
757 ret = drm_atomic_set_writeback_fb_for_connector(state, fb);
758 if (fb)
759 drm_framebuffer_put(fb);
760 return ret;
761 } else if (property == config->writeback_out_fence_ptr_property) {
762 s32 __user *fence_ptr = u64_to_user_ptr(val);
763
764 return set_out_fence_for_connector(state->state, connector,
765 fence_ptr);
766 } else if (property == connector->max_bpc_property) {
767 state->max_requested_bpc = val;
768 } else if (property == connector->privacy_screen_sw_state_property) {
769 state->privacy_screen_sw_state = val;
770 } else if (connector->funcs->atomic_set_property) {
771 return connector->funcs->atomic_set_property(connector,
772 state, property, val);
773 } else {
774 drm_dbg_atomic(connector->dev,
775 "[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
776 connector->base.id, connector->name,
777 property->base.id, property->name);
778 return -EINVAL;
779 }
780
781 return 0;
782}
783
784static int
785drm_atomic_connector_get_property(struct drm_connector *connector,
786 const struct drm_connector_state *state,
787 struct drm_property *property, uint64_t *val)
788{
789 struct drm_device *dev = connector->dev;
790 struct drm_mode_config *config = &dev->mode_config;
791
792 if (property == config->prop_crtc_id) {
793 *val = (state->crtc) ? state->crtc->base.id : 0;
794 } else if (property == config->dpms_property) {
795 if (state->crtc && state->crtc->state->self_refresh_active)
796 *val = DRM_MODE_DPMS_ON;
797 else
798 *val = connector->dpms;
799 } else if (property == config->tv_select_subconnector_property) {
800 *val = state->tv.select_subconnector;
801 } else if (property == config->tv_subconnector_property) {
802 *val = state->tv.subconnector;
803 } else if (property == config->tv_left_margin_property) {
804 *val = state->tv.margins.left;
805 } else if (property == config->tv_right_margin_property) {
806 *val = state->tv.margins.right;
807 } else if (property == config->tv_top_margin_property) {
808 *val = state->tv.margins.top;
809 } else if (property == config->tv_bottom_margin_property) {
810 *val = state->tv.margins.bottom;
811 } else if (property == config->tv_mode_property) {
812 *val = state->tv.mode;
813 } else if (property == config->tv_brightness_property) {
814 *val = state->tv.brightness;
815 } else if (property == config->tv_contrast_property) {
816 *val = state->tv.contrast;
817 } else if (property == config->tv_flicker_reduction_property) {
818 *val = state->tv.flicker_reduction;
819 } else if (property == config->tv_overscan_property) {
820 *val = state->tv.overscan;
821 } else if (property == config->tv_saturation_property) {
822 *val = state->tv.saturation;
823 } else if (property == config->tv_hue_property) {
824 *val = state->tv.hue;
825 } else if (property == config->link_status_property) {
826 *val = state->link_status;
827 } else if (property == config->aspect_ratio_property) {
828 *val = state->picture_aspect_ratio;
829 } else if (property == config->content_type_property) {
830 *val = state->content_type;
831 } else if (property == connector->colorspace_property) {
832 *val = state->colorspace;
833 } else if (property == connector->scaling_mode_property) {
834 *val = state->scaling_mode;
835 } else if (property == config->hdr_output_metadata_property) {
836 *val = state->hdr_output_metadata ?
837 state->hdr_output_metadata->base.id : 0;
838 } else if (property == config->content_protection_property) {
839 *val = state->content_protection;
840 } else if (property == config->hdcp_content_type_property) {
841 *val = state->hdcp_content_type;
842 } else if (property == config->writeback_fb_id_property) {
843 /* Writeback framebuffer is one-shot, write and forget */
844 *val = 0;
845 } else if (property == config->writeback_out_fence_ptr_property) {
846 *val = 0;
847 } else if (property == connector->max_bpc_property) {
848 *val = state->max_requested_bpc;
849 } else if (property == connector->privacy_screen_sw_state_property) {
850 *val = state->privacy_screen_sw_state;
851 } else if (connector->funcs->atomic_get_property) {
852 return connector->funcs->atomic_get_property(connector,
853 state, property, val);
854 } else {
855 return -EINVAL;
856 }
857
858 return 0;
859}
860
861int drm_atomic_get_property(struct drm_mode_object *obj,
862 struct drm_property *property, uint64_t *val)
863{
864 struct drm_device *dev = property->dev;
865 int ret;
866
867 switch (obj->type) {
868 case DRM_MODE_OBJECT_CONNECTOR: {
869 struct drm_connector *connector = obj_to_connector(obj);
870
871 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
872 ret = drm_atomic_connector_get_property(connector,
873 connector->state, property, val);
874 break;
875 }
876 case DRM_MODE_OBJECT_CRTC: {
877 struct drm_crtc *crtc = obj_to_crtc(obj);
878
879 WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
880 ret = drm_atomic_crtc_get_property(crtc,
881 crtc->state, property, val);
882 break;
883 }
884 case DRM_MODE_OBJECT_PLANE: {
885 struct drm_plane *plane = obj_to_plane(obj);
886
887 WARN_ON(!drm_modeset_is_locked(&plane->mutex));
888 ret = drm_atomic_plane_get_property(plane,
889 plane->state, property, val);
890 break;
891 }
892 default:
893 ret = -EINVAL;
894 break;
895 }
896
897 return ret;
898}
899
900/*
901 * The big monster ioctl
902 */
903
904static struct drm_pending_vblank_event *create_vblank_event(
905 struct drm_crtc *crtc, uint64_t user_data)
906{
907 struct drm_pending_vblank_event *e = NULL;
908
909 e = kzalloc(sizeof *e, GFP_KERNEL);
910 if (!e)
911 return NULL;
912
913 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
914 e->event.base.length = sizeof(e->event);
915 e->event.vbl.crtc_id = crtc->base.id;
916 e->event.vbl.user_data = user_data;
917
918 return e;
919}
920
921int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
922 struct drm_connector *connector,
923 int mode)
924{
925 struct drm_connector *tmp_connector;
926 struct drm_connector_state *new_conn_state;
927 struct drm_crtc *crtc;
928 struct drm_crtc_state *crtc_state;
929 int i, ret, old_mode = connector->dpms;
930 bool active = false;
931
932 ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
933 state->acquire_ctx);
934 if (ret)
935 return ret;
936
937 if (mode != DRM_MODE_DPMS_ON)
938 mode = DRM_MODE_DPMS_OFF;
939 connector->dpms = mode;
940
941 crtc = connector->state->crtc;
942 if (!crtc)
943 goto out;
944 ret = drm_atomic_add_affected_connectors(state, crtc);
945 if (ret)
946 goto out;
947
948 crtc_state = drm_atomic_get_crtc_state(state, crtc);
949 if (IS_ERR(crtc_state)) {
950 ret = PTR_ERR(crtc_state);
951 goto out;
952 }
953
954 for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
955 if (new_conn_state->crtc != crtc)
956 continue;
957 if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
958 active = true;
959 break;
960 }
961 }
962
963 crtc_state->active = active;
964 ret = drm_atomic_commit(state);
965out:
966 if (ret != 0)
967 connector->dpms = old_mode;
968 return ret;
969}
970
971int drm_atomic_set_property(struct drm_atomic_state *state,
972 struct drm_file *file_priv,
973 struct drm_mode_object *obj,
974 struct drm_property *prop,
975 uint64_t prop_value)
976{
977 struct drm_mode_object *ref;
978 int ret;
979
980 if (!drm_property_change_valid_get(prop, prop_value, &ref))
981 return -EINVAL;
982
983 switch (obj->type) {
984 case DRM_MODE_OBJECT_CONNECTOR: {
985 struct drm_connector *connector = obj_to_connector(obj);
986 struct drm_connector_state *connector_state;
987
988 connector_state = drm_atomic_get_connector_state(state, connector);
989 if (IS_ERR(connector_state)) {
990 ret = PTR_ERR(connector_state);
991 break;
992 }
993
994 ret = drm_atomic_connector_set_property(connector,
995 connector_state, file_priv,
996 prop, prop_value);
997 break;
998 }
999 case DRM_MODE_OBJECT_CRTC: {
1000 struct drm_crtc *crtc = obj_to_crtc(obj);
1001 struct drm_crtc_state *crtc_state;
1002
1003 crtc_state = drm_atomic_get_crtc_state(state, crtc);
1004 if (IS_ERR(crtc_state)) {
1005 ret = PTR_ERR(crtc_state);
1006 break;
1007 }
1008
1009 ret = drm_atomic_crtc_set_property(crtc,
1010 crtc_state, prop, prop_value);
1011 break;
1012 }
1013 case DRM_MODE_OBJECT_PLANE: {
1014 struct drm_plane *plane = obj_to_plane(obj);
1015 struct drm_plane_state *plane_state;
1016
1017 plane_state = drm_atomic_get_plane_state(state, plane);
1018 if (IS_ERR(plane_state)) {
1019 ret = PTR_ERR(plane_state);
1020 break;
1021 }
1022
1023 ret = drm_atomic_plane_set_property(plane,
1024 plane_state, file_priv,
1025 prop, prop_value);
1026 break;
1027 }
1028 default:
1029 ret = -EINVAL;
1030 break;
1031 }
1032
1033 drm_property_change_valid_put(prop, ref);
1034 return ret;
1035}
1036
1037/**
1038 * DOC: explicit fencing properties
1039 *
1040 * Explicit fencing allows userspace to control the buffer synchronization
1041 * between devices. A Fence or a group of fences are transferred to/from
1042 * userspace using Sync File fds and there are two DRM properties for that.
1043 * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
1044 * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
1045 *
1046 * As a contrast, with implicit fencing the kernel keeps track of any
1047 * ongoing rendering, and automatically ensures that the atomic update waits
1048 * for any pending rendering to complete. This is usually tracked in &struct
1049 * dma_resv which can also contain mandatory kernel fences. Implicit syncing
1050 * is how Linux traditionally worked (e.g. DRI2/3 on X.org), whereas explicit
1051 * fencing is what Android wants.
1052 *
1053 * "IN_FENCE_FD”:
1054 * Use this property to pass a fence that DRM should wait on before
1055 * proceeding with the Atomic Commit request and show the framebuffer for
1056 * the plane on the screen. The fence can be either a normal fence or a
1057 * merged one, the sync_file framework will handle both cases and use a
1058 * fence_array if a merged fence is received. Passing -1 here means no
1059 * fences to wait on.
1060 *
1061 * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
1062 * it will only check if the Sync File is a valid one.
1063 *
1064 * On the driver side the fence is stored on the @fence parameter of
1065 * &struct drm_plane_state. Drivers which also support implicit fencing
1066 * should extract the implicit fence using drm_gem_plane_helper_prepare_fb(),
1067 * to make sure there's consistent behaviour between drivers in precedence
1068 * of implicit vs. explicit fencing.
1069 *
1070 * "OUT_FENCE_PTR”:
1071 * Use this property to pass a file descriptor pointer to DRM. Once the
1072 * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
1073 * the file descriptor number of a Sync File. This Sync File contains the
1074 * CRTC fence that will be signaled when all framebuffers present on the
1075 * Atomic Commit * request for that given CRTC are scanned out on the
1076 * screen.
1077 *
1078 * The Atomic Commit request fails if a invalid pointer is passed. If the
1079 * Atomic Commit request fails for any other reason the out fence fd
1080 * returned will be -1. On a Atomic Commit with the
1081 * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
1082 *
1083 * Note that out-fences don't have a special interface to drivers and are
1084 * internally represented by a &struct drm_pending_vblank_event in struct
1085 * &drm_crtc_state, which is also used by the nonblocking atomic commit
1086 * helpers and for the DRM event handling for existing userspace.
1087 */
1088
1089struct drm_out_fence_state {
1090 s32 __user *out_fence_ptr;
1091 struct sync_file *sync_file;
1092 int fd;
1093};
1094
1095static int setup_out_fence(struct drm_out_fence_state *fence_state,
1096 struct dma_fence *fence)
1097{
1098 fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
1099 if (fence_state->fd < 0)
1100 return fence_state->fd;
1101
1102 if (put_user(fence_state->fd, fence_state->out_fence_ptr))
1103 return -EFAULT;
1104
1105 fence_state->sync_file = sync_file_create(fence);
1106 if (!fence_state->sync_file)
1107 return -ENOMEM;
1108
1109 return 0;
1110}
1111
1112static int prepare_signaling(struct drm_device *dev,
1113 struct drm_atomic_state *state,
1114 struct drm_mode_atomic *arg,
1115 struct drm_file *file_priv,
1116 struct drm_out_fence_state **fence_state,
1117 unsigned int *num_fences)
1118{
1119 struct drm_crtc *crtc;
1120 struct drm_crtc_state *crtc_state;
1121 struct drm_connector *conn;
1122 struct drm_connector_state *conn_state;
1123 int i, c = 0, ret;
1124
1125 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
1126 return 0;
1127
1128 for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1129 s32 __user *fence_ptr;
1130
1131 fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
1132
1133 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
1134 struct drm_pending_vblank_event *e;
1135
1136 e = create_vblank_event(crtc, arg->user_data);
1137 if (!e)
1138 return -ENOMEM;
1139
1140 crtc_state->event = e;
1141 }
1142
1143 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
1144 struct drm_pending_vblank_event *e = crtc_state->event;
1145
1146 if (!file_priv)
1147 continue;
1148
1149 ret = drm_event_reserve_init(dev, file_priv, &e->base,
1150 &e->event.base);
1151 if (ret) {
1152 kfree(e);
1153 crtc_state->event = NULL;
1154 return ret;
1155 }
1156 }
1157
1158 if (fence_ptr) {
1159 struct dma_fence *fence;
1160 struct drm_out_fence_state *f;
1161
1162 f = krealloc(*fence_state, sizeof(**fence_state) *
1163 (*num_fences + 1), GFP_KERNEL);
1164 if (!f)
1165 return -ENOMEM;
1166
1167 memset(&f[*num_fences], 0, sizeof(*f));
1168
1169 f[*num_fences].out_fence_ptr = fence_ptr;
1170 *fence_state = f;
1171
1172 fence = drm_crtc_create_fence(crtc);
1173 if (!fence)
1174 return -ENOMEM;
1175
1176 ret = setup_out_fence(&f[(*num_fences)++], fence);
1177 if (ret) {
1178 dma_fence_put(fence);
1179 return ret;
1180 }
1181
1182 crtc_state->event->base.fence = fence;
1183 }
1184
1185 c++;
1186 }
1187
1188 for_each_new_connector_in_state(state, conn, conn_state, i) {
1189 struct drm_writeback_connector *wb_conn;
1190 struct drm_out_fence_state *f;
1191 struct dma_fence *fence;
1192 s32 __user *fence_ptr;
1193
1194 if (!conn_state->writeback_job)
1195 continue;
1196
1197 fence_ptr = get_out_fence_for_connector(state, conn);
1198 if (!fence_ptr)
1199 continue;
1200
1201 f = krealloc(*fence_state, sizeof(**fence_state) *
1202 (*num_fences + 1), GFP_KERNEL);
1203 if (!f)
1204 return -ENOMEM;
1205
1206 memset(&f[*num_fences], 0, sizeof(*f));
1207
1208 f[*num_fences].out_fence_ptr = fence_ptr;
1209 *fence_state = f;
1210
1211 wb_conn = drm_connector_to_writeback(conn);
1212 fence = drm_writeback_get_out_fence(wb_conn);
1213 if (!fence)
1214 return -ENOMEM;
1215
1216 ret = setup_out_fence(&f[(*num_fences)++], fence);
1217 if (ret) {
1218 dma_fence_put(fence);
1219 return ret;
1220 }
1221
1222 conn_state->writeback_job->out_fence = fence;
1223 }
1224
1225 /*
1226 * Having this flag means user mode pends on event which will never
1227 * reach due to lack of at least one CRTC for signaling
1228 */
1229 if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
1230 return -EINVAL;
1231
1232 return 0;
1233}
1234
1235static void complete_signaling(struct drm_device *dev,
1236 struct drm_atomic_state *state,
1237 struct drm_out_fence_state *fence_state,
1238 unsigned int num_fences,
1239 bool install_fds)
1240{
1241 struct drm_crtc *crtc;
1242 struct drm_crtc_state *crtc_state;
1243 int i;
1244
1245 if (install_fds) {
1246 for (i = 0; i < num_fences; i++)
1247 fd_install(fence_state[i].fd,
1248 fence_state[i].sync_file->file);
1249
1250 kfree(fence_state);
1251 return;
1252 }
1253
1254 for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1255 struct drm_pending_vblank_event *event = crtc_state->event;
1256 /*
1257 * Free the allocated event. drm_atomic_helper_setup_commit
1258 * can allocate an event too, so only free it if it's ours
1259 * to prevent a double free in drm_atomic_state_clear.
1260 */
1261 if (event && (event->base.fence || event->base.file_priv)) {
1262 drm_event_cancel_free(dev, &event->base);
1263 crtc_state->event = NULL;
1264 }
1265 }
1266
1267 if (!fence_state)
1268 return;
1269
1270 for (i = 0; i < num_fences; i++) {
1271 if (fence_state[i].sync_file)
1272 fput(fence_state[i].sync_file->file);
1273 if (fence_state[i].fd >= 0)
1274 put_unused_fd(fence_state[i].fd);
1275
1276 /* If this fails log error to the user */
1277 if (fence_state[i].out_fence_ptr &&
1278 put_user(-1, fence_state[i].out_fence_ptr))
1279 drm_dbg_atomic(dev, "Couldn't clear out_fence_ptr\n");
1280 }
1281
1282 kfree(fence_state);
1283}
1284
1285int drm_mode_atomic_ioctl(struct drm_device *dev,
1286 void *data, struct drm_file *file_priv)
1287{
1288 struct drm_mode_atomic *arg = data;
1289 uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
1290 uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
1291 uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
1292 uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
1293 unsigned int copied_objs, copied_props;
1294 struct drm_atomic_state *state;
1295 struct drm_modeset_acquire_ctx ctx;
1296 struct drm_out_fence_state *fence_state;
1297 int ret = 0;
1298 unsigned int i, j, num_fences;
1299
1300 /* disallow for drivers not supporting atomic: */
1301 if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
1302 return -EOPNOTSUPP;
1303
1304 /* disallow for userspace that has not enabled atomic cap (even
1305 * though this may be a bit overkill, since legacy userspace
1306 * wouldn't know how to call this ioctl)
1307 */
1308 if (!file_priv->atomic) {
1309 drm_dbg_atomic(dev,
1310 "commit failed: atomic cap not enabled\n");
1311 return -EINVAL;
1312 }
1313
1314 if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) {
1315 drm_dbg_atomic(dev, "commit failed: invalid flag\n");
1316 return -EINVAL;
1317 }
1318
1319 if (arg->reserved) {
1320 drm_dbg_atomic(dev, "commit failed: reserved field set\n");
1321 return -EINVAL;
1322 }
1323
1324 if (arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) {
1325 drm_dbg_atomic(dev,
1326 "commit failed: invalid flag DRM_MODE_PAGE_FLIP_ASYNC\n");
1327 return -EINVAL;
1328 }
1329
1330 /* can't test and expect an event at the same time. */
1331 if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
1332 (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) {
1333 drm_dbg_atomic(dev,
1334 "commit failed: page-flip event requested with test-only commit\n");
1335 return -EINVAL;
1336 }
1337
1338 state = drm_atomic_state_alloc(dev);
1339 if (!state)
1340 return -ENOMEM;
1341
1342 drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
1343 state->acquire_ctx = &ctx;
1344 state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
1345
1346retry:
1347 copied_objs = 0;
1348 copied_props = 0;
1349 fence_state = NULL;
1350 num_fences = 0;
1351
1352 for (i = 0; i < arg->count_objs; i++) {
1353 uint32_t obj_id, count_props;
1354 struct drm_mode_object *obj;
1355
1356 if (get_user(obj_id, objs_ptr + copied_objs)) {
1357 ret = -EFAULT;
1358 goto out;
1359 }
1360
1361 obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
1362 if (!obj) {
1363 ret = -ENOENT;
1364 goto out;
1365 }
1366
1367 if (!obj->properties) {
1368 drm_mode_object_put(obj);
1369 ret = -ENOENT;
1370 goto out;
1371 }
1372
1373 if (get_user(count_props, count_props_ptr + copied_objs)) {
1374 drm_mode_object_put(obj);
1375 ret = -EFAULT;
1376 goto out;
1377 }
1378
1379 copied_objs++;
1380
1381 for (j = 0; j < count_props; j++) {
1382 uint32_t prop_id;
1383 uint64_t prop_value;
1384 struct drm_property *prop;
1385
1386 if (get_user(prop_id, props_ptr + copied_props)) {
1387 drm_mode_object_put(obj);
1388 ret = -EFAULT;
1389 goto out;
1390 }
1391
1392 prop = drm_mode_obj_find_prop_id(obj, prop_id);
1393 if (!prop) {
1394 drm_mode_object_put(obj);
1395 ret = -ENOENT;
1396 goto out;
1397 }
1398
1399 if (copy_from_user(&prop_value,
1400 prop_values_ptr + copied_props,
1401 sizeof(prop_value))) {
1402 drm_mode_object_put(obj);
1403 ret = -EFAULT;
1404 goto out;
1405 }
1406
1407 ret = drm_atomic_set_property(state, file_priv,
1408 obj, prop, prop_value);
1409 if (ret) {
1410 drm_mode_object_put(obj);
1411 goto out;
1412 }
1413
1414 copied_props++;
1415 }
1416
1417 drm_mode_object_put(obj);
1418 }
1419
1420 ret = prepare_signaling(dev, state, arg, file_priv, &fence_state,
1421 &num_fences);
1422 if (ret)
1423 goto out;
1424
1425 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
1426 ret = drm_atomic_check_only(state);
1427 } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
1428 ret = drm_atomic_nonblocking_commit(state);
1429 } else {
1430 ret = drm_atomic_commit(state);
1431 }
1432
1433out:
1434 complete_signaling(dev, state, fence_state, num_fences, !ret);
1435
1436 if (ret == -EDEADLK) {
1437 drm_atomic_state_clear(state);
1438 ret = drm_modeset_backoff(&ctx);
1439 if (!ret)
1440 goto retry;
1441 }
1442
1443 drm_atomic_state_put(state);
1444
1445 drm_modeset_drop_locks(&ctx);
1446 drm_modeset_acquire_fini(&ctx);
1447
1448 return ret;
1449}