2 * Copyright (C) 2014 Red Hat
3 * Copyright (C) 2014 Intel Corp.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
24 * Rob Clark <robdclark@gmail.com>
25 * Daniel Vetter <daniel.vetter@ffwll.ch>
30 #include <drm/drm_atomic.h>
31 #include <drm/drm_plane_helper.h>
34 * drm_atomic_state_default_release -
35 * release memory initialized by drm_atomic_state_init
36 * @state: atomic state
38 * Free all the memory allocated by drm_atomic_state_init.
39 * This is useful for drivers that subclass the atomic state.
41 void drm_atomic_state_default_release(struct drm_atomic_state
*state
)
43 kfree(state
->connectors
);
44 kfree(state
->connector_states
);
46 kfree(state
->crtc_states
);
48 kfree(state
->plane_states
);
50 EXPORT_SYMBOL(drm_atomic_state_default_release
);
53 * drm_atomic_state_init - init new atomic state
55 * @state: atomic state
57 * Default implementation for filling in a new atomic state.
58 * This is useful for drivers that subclass the atomic state.
61 drm_atomic_state_init(struct drm_device
*dev
, struct drm_atomic_state
*state
)
63 /* TODO legacy paths should maybe do a better job about
64 * setting this appropriately?
66 state
->allow_modeset
= true;
68 state
->num_connector
= ACCESS_ONCE(dev
->mode_config
.num_connector
);
70 state
->crtcs
= kcalloc(dev
->mode_config
.num_crtc
,
71 sizeof(*state
->crtcs
), GFP_KERNEL
);
74 state
->crtc_states
= kcalloc(dev
->mode_config
.num_crtc
,
75 sizeof(*state
->crtc_states
), GFP_KERNEL
);
76 if (!state
->crtc_states
)
78 state
->planes
= kcalloc(dev
->mode_config
.num_total_plane
,
79 sizeof(*state
->planes
), GFP_KERNEL
);
82 state
->plane_states
= kcalloc(dev
->mode_config
.num_total_plane
,
83 sizeof(*state
->plane_states
), GFP_KERNEL
);
84 if (!state
->plane_states
)
86 state
->connectors
= kcalloc(state
->num_connector
,
87 sizeof(*state
->connectors
),
89 if (!state
->connectors
)
91 state
->connector_states
= kcalloc(state
->num_connector
,
92 sizeof(*state
->connector_states
),
94 if (!state
->connector_states
)
99 DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state
);
103 drm_atomic_state_default_release(state
);
106 EXPORT_SYMBOL(drm_atomic_state_init
);
109 * drm_atomic_state_alloc - allocate atomic state
112 * This allocates an empty atomic state to track updates.
114 struct drm_atomic_state
*
115 drm_atomic_state_alloc(struct drm_device
*dev
)
117 struct drm_mode_config
*config
= &dev
->mode_config
;
118 struct drm_atomic_state
*state
;
120 if (!config
->funcs
->atomic_state_alloc
) {
121 state
= kzalloc(sizeof(*state
), GFP_KERNEL
);
124 if (drm_atomic_state_init(dev
, state
) < 0) {
131 return config
->funcs
->atomic_state_alloc(dev
);
133 EXPORT_SYMBOL(drm_atomic_state_alloc
);
136 * drm_atomic_state_default_clear - clear base atomic state
137 * @state: atomic state
139 * Default implementation for clearing atomic state.
140 * This is useful for drivers that subclass the atomic state.
142 void drm_atomic_state_default_clear(struct drm_atomic_state
*state
)
144 struct drm_device
*dev
= state
->dev
;
145 struct drm_mode_config
*config
= &dev
->mode_config
;
148 DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state
);
150 for (i
= 0; i
< state
->num_connector
; i
++) {
151 struct drm_connector
*connector
= state
->connectors
[i
];
157 * FIXME: Async commits can race with connector unplugging and
158 * there's currently nothing that prevents cleanup up state for
159 * deleted connectors. As long as the callback doesn't look at
160 * the connector we'll be fine though, so make sure that's the
161 * case by setting all connector pointers to NULL.
163 state
->connector_states
[i
]->connector
= NULL
;
164 connector
->funcs
->atomic_destroy_state(NULL
,
165 state
->connector_states
[i
]);
166 state
->connectors
[i
] = NULL
;
167 state
->connector_states
[i
] = NULL
;
170 for (i
= 0; i
< config
->num_crtc
; i
++) {
171 struct drm_crtc
*crtc
= state
->crtcs
[i
];
176 crtc
->funcs
->atomic_destroy_state(crtc
,
177 state
->crtc_states
[i
]);
178 state
->crtcs
[i
] = NULL
;
179 state
->crtc_states
[i
] = NULL
;
182 for (i
= 0; i
< config
->num_total_plane
; i
++) {
183 struct drm_plane
*plane
= state
->planes
[i
];
188 plane
->funcs
->atomic_destroy_state(plane
,
189 state
->plane_states
[i
]);
190 state
->planes
[i
] = NULL
;
191 state
->plane_states
[i
] = NULL
;
194 EXPORT_SYMBOL(drm_atomic_state_default_clear
);
197 * drm_atomic_state_clear - clear state object
198 * @state: atomic state
200 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
201 * all locks. So someone else could sneak in and change the current modeset
202 * configuration. Which means that all the state assembled in @state is no
203 * longer an atomic update to the current state, but to some arbitrary earlier
204 * state. Which could break assumptions the driver's ->atomic_check likely
207 * Hence we must clear all cached state and completely start over, using this
210 void drm_atomic_state_clear(struct drm_atomic_state
*state
)
212 struct drm_device
*dev
= state
->dev
;
213 struct drm_mode_config
*config
= &dev
->mode_config
;
215 if (config
->funcs
->atomic_state_clear
)
216 config
->funcs
->atomic_state_clear(state
);
218 drm_atomic_state_default_clear(state
);
220 EXPORT_SYMBOL(drm_atomic_state_clear
);
223 * drm_atomic_state_free - free all memory for an atomic state
224 * @state: atomic state to deallocate
226 * This frees all memory associated with an atomic state, including all the
227 * per-object state for planes, crtcs and connectors.
229 void drm_atomic_state_free(struct drm_atomic_state
*state
)
231 struct drm_device
*dev
;
232 struct drm_mode_config
*config
;
238 config
= &dev
->mode_config
;
240 drm_atomic_state_clear(state
);
242 DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state
);
244 if (config
->funcs
->atomic_state_free
) {
245 config
->funcs
->atomic_state_free(state
);
247 drm_atomic_state_default_release(state
);
251 EXPORT_SYMBOL(drm_atomic_state_free
);
254 * drm_atomic_get_crtc_state - get crtc state
255 * @state: global atomic state object
256 * @crtc: crtc to get state object for
258 * This function returns the crtc state for the given crtc, allocating it if
259 * needed. It will also grab the relevant crtc lock to make sure that the state
264 * Either the allocated state or the error code encoded into the pointer. When
265 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
266 * entire atomic sequence must be restarted. All other errors are fatal.
268 struct drm_crtc_state
*
269 drm_atomic_get_crtc_state(struct drm_atomic_state
*state
,
270 struct drm_crtc
*crtc
)
272 int ret
, index
= drm_crtc_index(crtc
);
273 struct drm_crtc_state
*crtc_state
;
275 crtc_state
= drm_atomic_get_existing_crtc_state(state
, crtc
);
279 ret
= drm_modeset_lock(&crtc
->mutex
, state
->acquire_ctx
);
283 crtc_state
= crtc
->funcs
->atomic_duplicate_state(crtc
);
285 return ERR_PTR(-ENOMEM
);
287 state
->crtc_states
[index
] = crtc_state
;
288 state
->crtcs
[index
] = crtc
;
289 crtc_state
->state
= state
;
291 DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
292 crtc
->base
.id
, crtc
->name
, crtc_state
, state
);
296 EXPORT_SYMBOL(drm_atomic_get_crtc_state
);
299 * drm_atomic_set_mode_for_crtc - set mode for CRTC
300 * @state: the CRTC whose incoming state to update
301 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
303 * Set a mode (originating from the kernel) on the desired CRTC state. Does
304 * not change any other state properties, including enable, active, or
308 * Zero on success, error code on failure. Cannot return -EDEADLK.
310 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state
*state
,
311 struct drm_display_mode
*mode
)
313 struct drm_mode_modeinfo umode
;
315 /* Early return for no change. */
316 if (mode
&& memcmp(&state
->mode
, mode
, sizeof(*mode
)) == 0)
319 drm_property_unreference_blob(state
->mode_blob
);
320 state
->mode_blob
= NULL
;
323 drm_mode_convert_to_umode(&umode
, mode
);
325 drm_property_create_blob(state
->crtc
->dev
,
328 if (IS_ERR(state
->mode_blob
))
329 return PTR_ERR(state
->mode_blob
);
331 drm_mode_copy(&state
->mode
, mode
);
332 state
->enable
= true;
333 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
336 memset(&state
->mode
, 0, sizeof(state
->mode
));
337 state
->enable
= false;
338 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
344 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc
);
347 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
348 * @state: the CRTC whose incoming state to update
349 * @blob: pointer to blob property to use for mode
351 * Set a mode (originating from a blob property) on the desired CRTC state.
352 * This function will take a reference on the blob property for the CRTC state,
353 * and release the reference held on the state's existing mode property, if any
357 * Zero on success, error code on failure. Cannot return -EDEADLK.
359 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state
*state
,
360 struct drm_property_blob
*blob
)
362 if (blob
== state
->mode_blob
)
365 drm_property_unreference_blob(state
->mode_blob
);
366 state
->mode_blob
= NULL
;
369 if (blob
->length
!= sizeof(struct drm_mode_modeinfo
) ||
370 drm_mode_convert_umode(&state
->mode
,
371 (const struct drm_mode_modeinfo
*)
375 state
->mode_blob
= drm_property_reference_blob(blob
);
376 state
->enable
= true;
377 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
378 state
->mode
.name
, state
);
380 memset(&state
->mode
, 0, sizeof(state
->mode
));
381 state
->enable
= false;
382 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
388 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc
);
391 * drm_atomic_crtc_set_property - set property on CRTC
392 * @crtc: the drm CRTC to set a property on
393 * @state: the state object to update with the new property value
394 * @property: the property to set
395 * @val: the new property value
397 * Use this instead of calling crtc->atomic_set_property directly.
398 * This function handles generic/core properties and calls out to
399 * driver's ->atomic_set_property() for driver properties. To ensure
400 * consistent behavior you must call this function rather than the
401 * driver hook directly.
404 * Zero on success, error code on failure
406 int drm_atomic_crtc_set_property(struct drm_crtc
*crtc
,
407 struct drm_crtc_state
*state
, struct drm_property
*property
,
410 struct drm_device
*dev
= crtc
->dev
;
411 struct drm_mode_config
*config
= &dev
->mode_config
;
414 if (property
== config
->prop_active
)
416 else if (property
== config
->prop_mode_id
) {
417 struct drm_property_blob
*mode
=
418 drm_property_lookup_blob(dev
, val
);
419 ret
= drm_atomic_set_mode_prop_for_crtc(state
, mode
);
420 drm_property_unreference_blob(mode
);
423 else if (crtc
->funcs
->atomic_set_property
)
424 return crtc
->funcs
->atomic_set_property(crtc
, state
, property
, val
);
430 EXPORT_SYMBOL(drm_atomic_crtc_set_property
);
433 * drm_atomic_crtc_get_property - get property value from CRTC state
434 * @crtc: the drm CRTC to set a property on
435 * @state: the state object to get the property value from
436 * @property: the property to set
437 * @val: return location for the property value
439 * This function handles generic/core properties and calls out to
440 * driver's ->atomic_get_property() for driver properties. To ensure
441 * consistent behavior you must call this function rather than the
442 * driver hook directly.
445 * Zero on success, error code on failure
448 drm_atomic_crtc_get_property(struct drm_crtc
*crtc
,
449 const struct drm_crtc_state
*state
,
450 struct drm_property
*property
, uint64_t *val
)
452 struct drm_device
*dev
= crtc
->dev
;
453 struct drm_mode_config
*config
= &dev
->mode_config
;
455 if (property
== config
->prop_active
)
456 *val
= state
->active
;
457 else if (property
== config
->prop_mode_id
)
458 *val
= (state
->mode_blob
) ? state
->mode_blob
->base
.id
: 0;
459 else if (crtc
->funcs
->atomic_get_property
)
460 return crtc
->funcs
->atomic_get_property(crtc
, state
, property
, val
);
468 * drm_atomic_crtc_check - check crtc state
469 * @crtc: crtc to check
470 * @state: crtc state to check
472 * Provides core sanity checks for crtc state.
475 * Zero on success, error code on failure
477 static int drm_atomic_crtc_check(struct drm_crtc
*crtc
,
478 struct drm_crtc_state
*state
)
480 /* NOTE: we explicitly don't enforce constraints such as primary
481 * layer covering entire screen, since that is something we want
482 * to allow (on hw that supports it). For hw that does not, it
483 * should be checked in driver's crtc->atomic_check() vfunc.
485 * TODO: Add generic modeset state checks once we support those.
488 if (state
->active
&& !state
->enable
) {
489 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
490 crtc
->base
.id
, crtc
->name
);
494 /* The state->enable vs. state->mode_blob checks can be WARN_ON,
495 * as this is a kernel-internal detail that userspace should never
496 * be able to trigger. */
497 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
498 WARN_ON(state
->enable
&& !state
->mode_blob
)) {
499 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
500 crtc
->base
.id
, crtc
->name
);
504 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
505 WARN_ON(!state
->enable
&& state
->mode_blob
)) {
506 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
507 crtc
->base
.id
, crtc
->name
);
512 * Reject event generation for when a CRTC is off and stays off.
513 * It wouldn't be hard to implement this, but userspace has a track
514 * record of happily burning through 100% cpu (or worse, crash) when the
515 * display pipe is suspended. To avoid all that fun just reject updates
516 * that ask for events since likely that indicates a bug in the
517 * compositor's drawing loop. This is consistent with the vblank IOCTL
518 * and legacy page_flip IOCTL which also reject service on a disabled
521 if (state
->event
&& !state
->active
&& !crtc
->state
->active
) {
522 DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n",
531 * drm_atomic_get_plane_state - get plane state
532 * @state: global atomic state object
533 * @plane: plane to get state object for
535 * This function returns the plane state for the given plane, allocating it if
536 * needed. It will also grab the relevant plane lock to make sure that the state
541 * Either the allocated state or the error code encoded into the pointer. When
542 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
543 * entire atomic sequence must be restarted. All other errors are fatal.
545 struct drm_plane_state
*
546 drm_atomic_get_plane_state(struct drm_atomic_state
*state
,
547 struct drm_plane
*plane
)
549 int ret
, index
= drm_plane_index(plane
);
550 struct drm_plane_state
*plane_state
;
552 plane_state
= drm_atomic_get_existing_plane_state(state
, plane
);
556 ret
= drm_modeset_lock(&plane
->mutex
, state
->acquire_ctx
);
560 plane_state
= plane
->funcs
->atomic_duplicate_state(plane
);
562 return ERR_PTR(-ENOMEM
);
564 state
->plane_states
[index
] = plane_state
;
565 state
->planes
[index
] = plane
;
566 plane_state
->state
= state
;
568 DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
569 plane
->base
.id
, plane
->name
, plane_state
, state
);
571 if (plane_state
->crtc
) {
572 struct drm_crtc_state
*crtc_state
;
574 crtc_state
= drm_atomic_get_crtc_state(state
,
576 if (IS_ERR(crtc_state
))
577 return ERR_CAST(crtc_state
);
582 EXPORT_SYMBOL(drm_atomic_get_plane_state
);
585 * drm_atomic_plane_set_property - set property on plane
586 * @plane: the drm plane to set a property on
587 * @state: the state object to update with the new property value
588 * @property: the property to set
589 * @val: the new property value
591 * Use this instead of calling plane->atomic_set_property directly.
592 * This function handles generic/core properties and calls out to
593 * driver's ->atomic_set_property() for driver properties. To ensure
594 * consistent behavior you must call this function rather than the
595 * driver hook directly.
598 * Zero on success, error code on failure
600 int drm_atomic_plane_set_property(struct drm_plane
*plane
,
601 struct drm_plane_state
*state
, struct drm_property
*property
,
604 struct drm_device
*dev
= plane
->dev
;
605 struct drm_mode_config
*config
= &dev
->mode_config
;
607 if (property
== config
->prop_fb_id
) {
608 struct drm_framebuffer
*fb
= drm_framebuffer_lookup(dev
, val
);
609 drm_atomic_set_fb_for_plane(state
, fb
);
611 drm_framebuffer_unreference(fb
);
612 } else if (property
== config
->prop_crtc_id
) {
613 struct drm_crtc
*crtc
= drm_crtc_find(dev
, val
);
614 return drm_atomic_set_crtc_for_plane(state
, crtc
);
615 } else if (property
== config
->prop_crtc_x
) {
616 state
->crtc_x
= U642I64(val
);
617 } else if (property
== config
->prop_crtc_y
) {
618 state
->crtc_y
= U642I64(val
);
619 } else if (property
== config
->prop_crtc_w
) {
621 } else if (property
== config
->prop_crtc_h
) {
623 } else if (property
== config
->prop_src_x
) {
625 } else if (property
== config
->prop_src_y
) {
627 } else if (property
== config
->prop_src_w
) {
629 } else if (property
== config
->prop_src_h
) {
631 } else if (property
== config
->rotation_property
) {
632 state
->rotation
= val
;
633 } else if (plane
->funcs
->atomic_set_property
) {
634 return plane
->funcs
->atomic_set_property(plane
, state
,
642 EXPORT_SYMBOL(drm_atomic_plane_set_property
);
645 * drm_atomic_plane_get_property - get property value from plane state
646 * @plane: the drm plane to set a property on
647 * @state: the state object to get the property value from
648 * @property: the property to set
649 * @val: return location for the property value
651 * This function handles generic/core properties and calls out to
652 * driver's ->atomic_get_property() for driver properties. To ensure
653 * consistent behavior you must call this function rather than the
654 * driver hook directly.
657 * Zero on success, error code on failure
660 drm_atomic_plane_get_property(struct drm_plane
*plane
,
661 const struct drm_plane_state
*state
,
662 struct drm_property
*property
, uint64_t *val
)
664 struct drm_device
*dev
= plane
->dev
;
665 struct drm_mode_config
*config
= &dev
->mode_config
;
667 if (property
== config
->prop_fb_id
) {
668 *val
= (state
->fb
) ? state
->fb
->base
.id
: 0;
669 } else if (property
== config
->prop_crtc_id
) {
670 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
671 } else if (property
== config
->prop_crtc_x
) {
672 *val
= I642U64(state
->crtc_x
);
673 } else if (property
== config
->prop_crtc_y
) {
674 *val
= I642U64(state
->crtc_y
);
675 } else if (property
== config
->prop_crtc_w
) {
676 *val
= state
->crtc_w
;
677 } else if (property
== config
->prop_crtc_h
) {
678 *val
= state
->crtc_h
;
679 } else if (property
== config
->prop_src_x
) {
681 } else if (property
== config
->prop_src_y
) {
683 } else if (property
== config
->prop_src_w
) {
685 } else if (property
== config
->prop_src_h
) {
687 } else if (property
== config
->rotation_property
) {
688 *val
= state
->rotation
;
689 } else if (plane
->funcs
->atomic_get_property
) {
690 return plane
->funcs
->atomic_get_property(plane
, state
, property
, val
);
699 plane_switching_crtc(struct drm_atomic_state
*state
,
700 struct drm_plane
*plane
,
701 struct drm_plane_state
*plane_state
)
703 if (!plane
->state
->crtc
|| !plane_state
->crtc
)
706 if (plane
->state
->crtc
== plane_state
->crtc
)
709 /* This could be refined, but currently there's no helper or driver code
710 * to implement direct switching of active planes nor userspace to take
711 * advantage of more direct plane switching without the intermediate
718 * drm_atomic_plane_check - check plane state
719 * @plane: plane to check
720 * @state: plane state to check
722 * Provides core sanity checks for plane state.
725 * Zero on success, error code on failure
727 static int drm_atomic_plane_check(struct drm_plane
*plane
,
728 struct drm_plane_state
*state
)
730 unsigned int fb_width
, fb_height
;
733 /* either *both* CRTC and FB must be set, or neither */
734 if (WARN_ON(state
->crtc
&& !state
->fb
)) {
735 DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
737 } else if (WARN_ON(state
->fb
&& !state
->crtc
)) {
738 DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
742 /* if disabled, we don't care about the rest of the state: */
746 /* Check whether this plane is usable on this CRTC */
747 if (!(plane
->possible_crtcs
& drm_crtc_mask(state
->crtc
))) {
748 DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
752 /* Check whether this plane supports the fb pixel format. */
753 ret
= drm_plane_check_pixel_format(plane
, state
->fb
->pixel_format
);
755 DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
756 drm_get_format_name(state
->fb
->pixel_format
));
760 /* Give drivers some help against integer overflows */
761 if (state
->crtc_w
> INT_MAX
||
762 state
->crtc_x
> INT_MAX
- (int32_t) state
->crtc_w
||
763 state
->crtc_h
> INT_MAX
||
764 state
->crtc_y
> INT_MAX
- (int32_t) state
->crtc_h
) {
765 DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n",
766 state
->crtc_w
, state
->crtc_h
,
767 state
->crtc_x
, state
->crtc_y
);
771 fb_width
= state
->fb
->width
<< 16;
772 fb_height
= state
->fb
->height
<< 16;
774 /* Make sure source coordinates are inside the fb. */
775 if (state
->src_w
> fb_width
||
776 state
->src_x
> fb_width
- state
->src_w
||
777 state
->src_h
> fb_height
||
778 state
->src_y
> fb_height
- state
->src_h
) {
779 DRM_DEBUG_ATOMIC("Invalid source coordinates "
780 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
781 state
->src_w
>> 16, ((state
->src_w
& 0xffff) * 15625) >> 10,
782 state
->src_h
>> 16, ((state
->src_h
& 0xffff) * 15625) >> 10,
783 state
->src_x
>> 16, ((state
->src_x
& 0xffff) * 15625) >> 10,
784 state
->src_y
>> 16, ((state
->src_y
& 0xffff) * 15625) >> 10);
788 if (plane_switching_crtc(state
->state
, plane
, state
)) {
789 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
790 plane
->base
.id
, plane
->name
);
798 * drm_atomic_get_connector_state - get connector state
799 * @state: global atomic state object
800 * @connector: connector to get state object for
802 * This function returns the connector state for the given connector,
803 * allocating it if needed. It will also grab the relevant connector lock to
804 * make sure that the state is consistent.
808 * Either the allocated state or the error code encoded into the pointer. When
809 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
810 * entire atomic sequence must be restarted. All other errors are fatal.
812 struct drm_connector_state
*
813 drm_atomic_get_connector_state(struct drm_atomic_state
*state
,
814 struct drm_connector
*connector
)
817 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
818 struct drm_connector_state
*connector_state
;
820 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
824 index
= drm_connector_index(connector
);
827 * Construction of atomic state updates can race with a connector
828 * hot-add which might overflow. In this case flip the table and just
829 * restart the entire ioctl - no one is fast enough to livelock a cpu
830 * with physical hotplug events anyway.
832 * Note that we only grab the indexes once we have the right lock to
833 * prevent hotplug/unplugging of connectors. So removal is no problem,
834 * at most the array is a bit too large.
836 if (index
>= state
->num_connector
) {
837 DRM_DEBUG_ATOMIC("Hot-added connector would overflow state array, restarting\n");
838 return ERR_PTR(-EAGAIN
);
841 if (state
->connector_states
[index
])
842 return state
->connector_states
[index
];
844 connector_state
= connector
->funcs
->atomic_duplicate_state(connector
);
845 if (!connector_state
)
846 return ERR_PTR(-ENOMEM
);
848 state
->connector_states
[index
] = connector_state
;
849 state
->connectors
[index
] = connector
;
850 connector_state
->state
= state
;
852 DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n",
853 connector
->base
.id
, connector_state
, state
);
855 if (connector_state
->crtc
) {
856 struct drm_crtc_state
*crtc_state
;
858 crtc_state
= drm_atomic_get_crtc_state(state
,
859 connector_state
->crtc
);
860 if (IS_ERR(crtc_state
))
861 return ERR_CAST(crtc_state
);
864 return connector_state
;
866 EXPORT_SYMBOL(drm_atomic_get_connector_state
);
869 * drm_atomic_connector_set_property - set property on connector.
870 * @connector: the drm connector to set a property on
871 * @state: the state object to update with the new property value
872 * @property: the property to set
873 * @val: the new property value
875 * Use this instead of calling connector->atomic_set_property directly.
876 * This function handles generic/core properties and calls out to
877 * driver's ->atomic_set_property() for driver properties. To ensure
878 * consistent behavior you must call this function rather than the
879 * driver hook directly.
882 * Zero on success, error code on failure
884 int drm_atomic_connector_set_property(struct drm_connector
*connector
,
885 struct drm_connector_state
*state
, struct drm_property
*property
,
888 struct drm_device
*dev
= connector
->dev
;
889 struct drm_mode_config
*config
= &dev
->mode_config
;
891 if (property
== config
->prop_crtc_id
) {
892 struct drm_crtc
*crtc
= drm_crtc_find(dev
, val
);
893 return drm_atomic_set_crtc_for_connector(state
, crtc
);
894 } else if (property
== config
->dpms_property
) {
895 /* setting DPMS property requires special handling, which
896 * is done in legacy setprop path for us. Disallow (for
897 * now?) atomic writes to DPMS property:
900 } else if (connector
->funcs
->atomic_set_property
) {
901 return connector
->funcs
->atomic_set_property(connector
,
902 state
, property
, val
);
907 EXPORT_SYMBOL(drm_atomic_connector_set_property
);
910 * drm_atomic_connector_get_property - get property value from connector state
911 * @connector: the drm connector to set a property on
912 * @state: the state object to get the property value from
913 * @property: the property to set
914 * @val: return location for the property value
916 * This function handles generic/core properties and calls out to
917 * driver's ->atomic_get_property() for driver properties. To ensure
918 * consistent behavior you must call this function rather than the
919 * driver hook directly.
922 * Zero on success, error code on failure
925 drm_atomic_connector_get_property(struct drm_connector
*connector
,
926 const struct drm_connector_state
*state
,
927 struct drm_property
*property
, uint64_t *val
)
929 struct drm_device
*dev
= connector
->dev
;
930 struct drm_mode_config
*config
= &dev
->mode_config
;
932 if (property
== config
->prop_crtc_id
) {
933 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
934 } else if (property
== config
->dpms_property
) {
935 *val
= connector
->dpms
;
936 } else if (connector
->funcs
->atomic_get_property
) {
937 return connector
->funcs
->atomic_get_property(connector
,
938 state
, property
, val
);
946 int drm_atomic_get_property(struct drm_mode_object
*obj
,
947 struct drm_property
*property
, uint64_t *val
)
949 struct drm_device
*dev
= property
->dev
;
953 case DRM_MODE_OBJECT_CONNECTOR
: {
954 struct drm_connector
*connector
= obj_to_connector(obj
);
955 WARN_ON(!drm_modeset_is_locked(&dev
->mode_config
.connection_mutex
));
956 ret
= drm_atomic_connector_get_property(connector
,
957 connector
->state
, property
, val
);
960 case DRM_MODE_OBJECT_CRTC
: {
961 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
962 WARN_ON(!drm_modeset_is_locked(&crtc
->mutex
));
963 ret
= drm_atomic_crtc_get_property(crtc
,
964 crtc
->state
, property
, val
);
967 case DRM_MODE_OBJECT_PLANE
: {
968 struct drm_plane
*plane
= obj_to_plane(obj
);
969 WARN_ON(!drm_modeset_is_locked(&plane
->mutex
));
970 ret
= drm_atomic_plane_get_property(plane
,
971 plane
->state
, property
, val
);
983 * drm_atomic_set_crtc_for_plane - set crtc for plane
984 * @plane_state: the plane whose incoming state to update
985 * @crtc: crtc to use for the plane
987 * Changing the assigned crtc for a plane requires us to grab the lock and state
988 * for the new crtc, as needed. This function takes care of all these details
989 * besides updating the pointer in the state object itself.
992 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
993 * then the w/w mutex code has detected a deadlock and the entire atomic
994 * sequence must be restarted. All other errors are fatal.
997 drm_atomic_set_crtc_for_plane(struct drm_plane_state
*plane_state
,
998 struct drm_crtc
*crtc
)
1000 struct drm_plane
*plane
= plane_state
->plane
;
1001 struct drm_crtc_state
*crtc_state
;
1003 if (plane_state
->crtc
) {
1004 crtc_state
= drm_atomic_get_crtc_state(plane_state
->state
,
1006 if (WARN_ON(IS_ERR(crtc_state
)))
1007 return PTR_ERR(crtc_state
);
1009 crtc_state
->plane_mask
&= ~(1 << drm_plane_index(plane
));
1012 plane_state
->crtc
= crtc
;
1015 crtc_state
= drm_atomic_get_crtc_state(plane_state
->state
,
1017 if (IS_ERR(crtc_state
))
1018 return PTR_ERR(crtc_state
);
1019 crtc_state
->plane_mask
|= (1 << drm_plane_index(plane
));
1023 DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n",
1024 plane_state
, crtc
->base
.id
, crtc
->name
);
1026 DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n",
1031 EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane
);
1034 * drm_atomic_set_fb_for_plane - set framebuffer for plane
1035 * @plane_state: atomic state object for the plane
1036 * @fb: fb to use for the plane
1038 * Changing the assigned framebuffer for a plane requires us to grab a reference
1039 * to the new fb and drop the reference to the old fb, if there is one. This
1040 * function takes care of all these details besides updating the pointer in the
1041 * state object itself.
1044 drm_atomic_set_fb_for_plane(struct drm_plane_state
*plane_state
,
1045 struct drm_framebuffer
*fb
)
1047 if (plane_state
->fb
)
1048 drm_framebuffer_unreference(plane_state
->fb
);
1050 drm_framebuffer_reference(fb
);
1051 plane_state
->fb
= fb
;
1054 DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n",
1055 fb
->base
.id
, plane_state
);
1057 DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n",
1060 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane
);
1063 * drm_atomic_set_crtc_for_connector - set crtc for connector
1064 * @conn_state: atomic state object for the connector
1065 * @crtc: crtc to use for the connector
1067 * Changing the assigned crtc for a connector requires us to grab the lock and
1068 * state for the new crtc, as needed. This function takes care of all these
1069 * details besides updating the pointer in the state object itself.
1072 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1073 * then the w/w mutex code has detected a deadlock and the entire atomic
1074 * sequence must be restarted. All other errors are fatal.
1077 drm_atomic_set_crtc_for_connector(struct drm_connector_state
*conn_state
,
1078 struct drm_crtc
*crtc
)
1080 struct drm_crtc_state
*crtc_state
;
1082 if (conn_state
->crtc
&& conn_state
->crtc
!= crtc
) {
1083 crtc_state
= drm_atomic_get_existing_crtc_state(conn_state
->state
,
1086 crtc_state
->connector_mask
&=
1087 ~(1 << drm_connector_index(conn_state
->connector
));
1091 crtc_state
= drm_atomic_get_crtc_state(conn_state
->state
, crtc
);
1092 if (IS_ERR(crtc_state
))
1093 return PTR_ERR(crtc_state
);
1095 crtc_state
->connector_mask
|=
1096 1 << drm_connector_index(conn_state
->connector
);
1099 conn_state
->crtc
= crtc
;
1102 DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
1103 conn_state
, crtc
->base
.id
, crtc
->name
);
1105 DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
1110 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector
);
1113 * drm_atomic_add_affected_connectors - add connectors for crtc
1114 * @state: atomic state
1117 * This function walks the current configuration and adds all connectors
1118 * currently using @crtc to the atomic configuration @state. Note that this
1119 * function must acquire the connection mutex. This can potentially cause
1120 * unneeded seralization if the update is just for the planes on one crtc. Hence
1121 * drivers and helpers should only call this when really needed (e.g. when a
1122 * full modeset needs to happen due to some change).
1125 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1126 * then the w/w mutex code has detected a deadlock and the entire atomic
1127 * sequence must be restarted. All other errors are fatal.
1130 drm_atomic_add_affected_connectors(struct drm_atomic_state
*state
,
1131 struct drm_crtc
*crtc
)
1133 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1134 struct drm_connector
*connector
;
1135 struct drm_connector_state
*conn_state
;
1138 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
1142 DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
1143 crtc
->base
.id
, crtc
->name
, state
);
1146 * Changed connectors are already in @state, so only need to look at the
1147 * current configuration.
1149 drm_for_each_connector(connector
, state
->dev
) {
1150 if (connector
->state
->crtc
!= crtc
)
1153 conn_state
= drm_atomic_get_connector_state(state
, connector
);
1154 if (IS_ERR(conn_state
))
1155 return PTR_ERR(conn_state
);
1160 EXPORT_SYMBOL(drm_atomic_add_affected_connectors
);
1163 * drm_atomic_add_affected_planes - add planes for crtc
1164 * @state: atomic state
1167 * This function walks the current configuration and adds all planes
1168 * currently used by @crtc to the atomic configuration @state. This is useful
1169 * when an atomic commit also needs to check all currently enabled plane on
1170 * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
1171 * to avoid special code to force-enable all planes.
1173 * Since acquiring a plane state will always also acquire the w/w mutex of the
1174 * current CRTC for that plane (if there is any) adding all the plane states for
1175 * a CRTC will not reduce parallism of atomic updates.
1178 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1179 * then the w/w mutex code has detected a deadlock and the entire atomic
1180 * sequence must be restarted. All other errors are fatal.
1183 drm_atomic_add_affected_planes(struct drm_atomic_state
*state
,
1184 struct drm_crtc
*crtc
)
1186 struct drm_plane
*plane
;
1188 WARN_ON(!drm_atomic_get_existing_crtc_state(state
, crtc
));
1190 drm_for_each_plane_mask(plane
, state
->dev
, crtc
->state
->plane_mask
) {
1191 struct drm_plane_state
*plane_state
=
1192 drm_atomic_get_plane_state(state
, plane
);
1194 if (IS_ERR(plane_state
))
1195 return PTR_ERR(plane_state
);
1199 EXPORT_SYMBOL(drm_atomic_add_affected_planes
);
1202 * drm_atomic_legacy_backoff - locking backoff for legacy ioctls
1203 * @state: atomic state
1205 * This function should be used by legacy entry points which don't understand
1206 * -EDEADLK semantics. For simplicity this one will grab all modeset locks after
1207 * the slowpath completed.
1209 void drm_atomic_legacy_backoff(struct drm_atomic_state
*state
)
1214 drm_modeset_backoff(state
->acquire_ctx
);
1216 ret
= drm_modeset_lock_all_ctx(state
->dev
, state
->acquire_ctx
);
1220 EXPORT_SYMBOL(drm_atomic_legacy_backoff
);
1223 * drm_atomic_check_only - check whether a given config would work
1224 * @state: atomic configuration to check
1226 * Note that this function can return -EDEADLK if the driver needed to acquire
1227 * more locks but encountered a deadlock. The caller must then do the usual w/w
1228 * backoff dance and restart. All other errors are fatal.
1231 * 0 on success, negative error code on failure.
1233 int drm_atomic_check_only(struct drm_atomic_state
*state
)
1235 struct drm_device
*dev
= state
->dev
;
1236 struct drm_mode_config
*config
= &dev
->mode_config
;
1237 struct drm_plane
*plane
;
1238 struct drm_plane_state
*plane_state
;
1239 struct drm_crtc
*crtc
;
1240 struct drm_crtc_state
*crtc_state
;
1243 DRM_DEBUG_ATOMIC("checking %p\n", state
);
1245 for_each_plane_in_state(state
, plane
, plane_state
, i
) {
1246 ret
= drm_atomic_plane_check(plane
, plane_state
);
1248 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
1249 plane
->base
.id
, plane
->name
);
1254 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1255 ret
= drm_atomic_crtc_check(crtc
, crtc_state
);
1257 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
1258 crtc
->base
.id
, crtc
->name
);
1263 if (config
->funcs
->atomic_check
)
1264 ret
= config
->funcs
->atomic_check(state
->dev
, state
);
1266 if (!state
->allow_modeset
) {
1267 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1268 if (drm_atomic_crtc_needs_modeset(crtc_state
)) {
1269 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
1270 crtc
->base
.id
, crtc
->name
);
1278 EXPORT_SYMBOL(drm_atomic_check_only
);
1281 * drm_atomic_commit - commit configuration atomically
1282 * @state: atomic configuration to check
1284 * Note that this function can return -EDEADLK if the driver needed to acquire
1285 * more locks but encountered a deadlock. The caller must then do the usual w/w
1286 * backoff dance and restart. All other errors are fatal.
1288 * Also note that on successful execution ownership of @state is transferred
1289 * from the caller of this function to the function itself. The caller must not
1290 * free or in any other way access @state. If the function fails then the caller
1291 * must clean up @state itself.
1294 * 0 on success, negative error code on failure.
1296 int drm_atomic_commit(struct drm_atomic_state
*state
)
1298 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1301 ret
= drm_atomic_check_only(state
);
1305 DRM_DEBUG_ATOMIC("commiting %p\n", state
);
1307 return config
->funcs
->atomic_commit(state
->dev
, state
, false);
1309 EXPORT_SYMBOL(drm_atomic_commit
);
1312 * drm_atomic_async_commit - atomic&async configuration commit
1313 * @state: atomic configuration to check
1315 * Note that this function can return -EDEADLK if the driver needed to acquire
1316 * more locks but encountered a deadlock. The caller must then do the usual w/w
1317 * backoff dance and restart. All other errors are fatal.
1319 * Also note that on successful execution ownership of @state is transferred
1320 * from the caller of this function to the function itself. The caller must not
1321 * free or in any other way access @state. If the function fails then the caller
1322 * must clean up @state itself.
1325 * 0 on success, negative error code on failure.
1327 int drm_atomic_async_commit(struct drm_atomic_state
*state
)
1329 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1332 ret
= drm_atomic_check_only(state
);
1336 DRM_DEBUG_ATOMIC("commiting %p asynchronously\n", state
);
1338 return config
->funcs
->atomic_commit(state
->dev
, state
, true);
1340 EXPORT_SYMBOL(drm_atomic_async_commit
);
1343 * The big monstor ioctl
1346 static struct drm_pending_vblank_event
*create_vblank_event(
1347 struct drm_device
*dev
, struct drm_file
*file_priv
, uint64_t user_data
)
1349 struct drm_pending_vblank_event
*e
= NULL
;
1350 unsigned long flags
;
1352 spin_lock_irqsave(&dev
->event_lock
, flags
);
1353 if (file_priv
->event_space
< sizeof e
->event
) {
1354 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
1357 file_priv
->event_space
-= sizeof e
->event
;
1358 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
1360 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
1362 spin_lock_irqsave(&dev
->event_lock
, flags
);
1363 file_priv
->event_space
+= sizeof e
->event
;
1364 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
1368 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
1369 e
->event
.base
.length
= sizeof e
->event
;
1370 e
->event
.user_data
= user_data
;
1371 e
->base
.event
= &e
->event
.base
;
1372 e
->base
.file_priv
= file_priv
;
1373 e
->base
.destroy
= (void (*) (struct drm_pending_event
*)) kfree
;
1379 static void destroy_vblank_event(struct drm_device
*dev
,
1380 struct drm_file
*file_priv
, struct drm_pending_vblank_event
*e
)
1382 unsigned long flags
;
1384 spin_lock_irqsave(&dev
->event_lock
, flags
);
1385 file_priv
->event_space
+= sizeof e
->event
;
1386 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
1390 static int atomic_set_prop(struct drm_atomic_state
*state
,
1391 struct drm_mode_object
*obj
, struct drm_property
*prop
,
1392 uint64_t prop_value
)
1394 struct drm_mode_object
*ref
;
1397 if (!drm_property_change_valid_get(prop
, prop_value
, &ref
))
1400 switch (obj
->type
) {
1401 case DRM_MODE_OBJECT_CONNECTOR
: {
1402 struct drm_connector
*connector
= obj_to_connector(obj
);
1403 struct drm_connector_state
*connector_state
;
1405 connector_state
= drm_atomic_get_connector_state(state
, connector
);
1406 if (IS_ERR(connector_state
)) {
1407 ret
= PTR_ERR(connector_state
);
1411 ret
= drm_atomic_connector_set_property(connector
,
1412 connector_state
, prop
, prop_value
);
1415 case DRM_MODE_OBJECT_CRTC
: {
1416 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
1417 struct drm_crtc_state
*crtc_state
;
1419 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1420 if (IS_ERR(crtc_state
)) {
1421 ret
= PTR_ERR(crtc_state
);
1425 ret
= drm_atomic_crtc_set_property(crtc
,
1426 crtc_state
, prop
, prop_value
);
1429 case DRM_MODE_OBJECT_PLANE
: {
1430 struct drm_plane
*plane
= obj_to_plane(obj
);
1431 struct drm_plane_state
*plane_state
;
1433 plane_state
= drm_atomic_get_plane_state(state
, plane
);
1434 if (IS_ERR(plane_state
)) {
1435 ret
= PTR_ERR(plane_state
);
1439 ret
= drm_atomic_plane_set_property(plane
,
1440 plane_state
, prop
, prop_value
);
1448 drm_property_change_valid_put(prop
, ref
);
1453 * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers.
1455 * @dev: drm device to check.
1456 * @plane_mask: plane mask for planes that were updated.
1457 * @ret: return value, can be -EDEADLK for a retry.
1459 * Before doing an update plane->old_fb is set to plane->fb,
1460 * but before dropping the locks old_fb needs to be set to NULL
1461 * and plane->fb updated. This is a common operation for each
1462 * atomic update, so this call is split off as a helper.
1464 void drm_atomic_clean_old_fb(struct drm_device
*dev
,
1465 unsigned plane_mask
,
1468 struct drm_plane
*plane
;
1470 /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
1471 * locks (ie. while it is still safe to deref plane->state). We
1472 * need to do this here because the driver entry points cannot
1473 * distinguish between legacy and atomic ioctls.
1475 drm_for_each_plane_mask(plane
, dev
, plane_mask
) {
1477 struct drm_framebuffer
*new_fb
= plane
->state
->fb
;
1479 drm_framebuffer_reference(new_fb
);
1481 plane
->crtc
= plane
->state
->crtc
;
1484 drm_framebuffer_unreference(plane
->old_fb
);
1486 plane
->old_fb
= NULL
;
1489 EXPORT_SYMBOL(drm_atomic_clean_old_fb
);
1491 int drm_mode_atomic_ioctl(struct drm_device
*dev
,
1492 void *data
, struct drm_file
*file_priv
)
1494 struct drm_mode_atomic
*arg
= data
;
1495 uint32_t __user
*objs_ptr
= (uint32_t __user
*)(unsigned long)(arg
->objs_ptr
);
1496 uint32_t __user
*count_props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->count_props_ptr
);
1497 uint32_t __user
*props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
1498 uint64_t __user
*prop_values_ptr
= (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
);
1499 unsigned int copied_objs
, copied_props
;
1500 struct drm_atomic_state
*state
;
1501 struct drm_modeset_acquire_ctx ctx
;
1502 struct drm_plane
*plane
;
1503 struct drm_crtc
*crtc
;
1504 struct drm_crtc_state
*crtc_state
;
1505 unsigned plane_mask
;
1509 /* disallow for drivers not supporting atomic: */
1510 if (!drm_core_check_feature(dev
, DRIVER_ATOMIC
))
1513 /* disallow for userspace that has not enabled atomic cap (even
1514 * though this may be a bit overkill, since legacy userspace
1515 * wouldn't know how to call this ioctl)
1517 if (!file_priv
->atomic
)
1520 if (arg
->flags
& ~DRM_MODE_ATOMIC_FLAGS
)
1526 if ((arg
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) &&
1527 !dev
->mode_config
.async_page_flip
)
1530 /* can't test and expect an event at the same time. */
1531 if ((arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) &&
1532 (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
))
1535 drm_modeset_acquire_init(&ctx
, 0);
1537 state
= drm_atomic_state_alloc(dev
);
1541 state
->acquire_ctx
= &ctx
;
1542 state
->allow_modeset
= !!(arg
->flags
& DRM_MODE_ATOMIC_ALLOW_MODESET
);
1549 for (i
= 0; i
< arg
->count_objs
; i
++) {
1550 uint32_t obj_id
, count_props
;
1551 struct drm_mode_object
*obj
;
1553 if (get_user(obj_id
, objs_ptr
+ copied_objs
)) {
1558 obj
= drm_mode_object_find(dev
, obj_id
, DRM_MODE_OBJECT_ANY
);
1559 if (!obj
|| !obj
->properties
) {
1564 if (get_user(count_props
, count_props_ptr
+ copied_objs
)) {
1571 for (j
= 0; j
< count_props
; j
++) {
1573 uint64_t prop_value
;
1574 struct drm_property
*prop
;
1576 if (get_user(prop_id
, props_ptr
+ copied_props
)) {
1581 prop
= drm_property_find(dev
, prop_id
);
1587 if (copy_from_user(&prop_value
,
1588 prop_values_ptr
+ copied_props
,
1589 sizeof(prop_value
))) {
1594 ret
= atomic_set_prop(state
, obj
, prop
, prop_value
);
1601 if (obj
->type
== DRM_MODE_OBJECT_PLANE
&& count_props
&&
1602 !(arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)) {
1603 plane
= obj_to_plane(obj
);
1604 plane_mask
|= (1 << drm_plane_index(plane
));
1605 plane
->old_fb
= plane
->fb
;
1609 if (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
1610 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1611 struct drm_pending_vblank_event
*e
;
1613 e
= create_vblank_event(dev
, file_priv
, arg
->user_data
);
1619 crtc_state
->event
= e
;
1623 if (arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) {
1625 * Unlike commit, check_only does not clean up state.
1626 * Below we call drm_atomic_state_free for it.
1628 ret
= drm_atomic_check_only(state
);
1629 } else if (arg
->flags
& DRM_MODE_ATOMIC_NONBLOCK
) {
1630 ret
= drm_atomic_async_commit(state
);
1632 ret
= drm_atomic_commit(state
);
1636 drm_atomic_clean_old_fb(dev
, plane_mask
, ret
);
1638 if (ret
&& arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
1640 * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive,
1641 * if they weren't, this code should be called on success
1642 * for TEST_ONLY too.
1645 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1646 if (!crtc_state
->event
)
1649 destroy_vblank_event(dev
, file_priv
,
1654 if (ret
== -EDEADLK
) {
1655 drm_atomic_state_clear(state
);
1656 drm_modeset_backoff(&ctx
);
1660 if (ret
|| arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)
1661 drm_atomic_state_free(state
);
1663 drm_modeset_drop_locks(&ctx
);
1664 drm_modeset_acquire_fini(&ctx
);