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cc4ceb48 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * | |
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: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
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. | |
22 | * | |
23 | * Authors: | |
24 | * Rob Clark <robdclark@gmail.com> | |
25 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
26 | */ | |
27 | ||
28 | ||
29 | #include <drm/drmP.h> | |
30 | #include <drm/drm_atomic.h> | |
31 | #include <drm/drm_plane_helper.h> | |
32 | ||
036ef573 ML |
33 | /** |
34 | * drm_atomic_state_default_release - | |
35 | * release memory initialized by drm_atomic_state_init | |
36 | * @state: atomic state | |
37 | * | |
38 | * Free all the memory allocated by drm_atomic_state_init. | |
39 | * This is useful for drivers that subclass the atomic state. | |
40 | */ | |
41 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
42 | { |
43 | kfree(state->connectors); | |
44 | kfree(state->connector_states); | |
45 | kfree(state->crtcs); | |
46 | kfree(state->crtc_states); | |
47 | kfree(state->planes); | |
48 | kfree(state->plane_states); | |
cc4ceb48 | 49 | } |
036ef573 | 50 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
51 | |
52 | /** | |
036ef573 | 53 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 54 | * @dev: DRM device |
036ef573 | 55 | * @state: atomic state |
cc4ceb48 | 56 | * |
036ef573 ML |
57 | * Default implementation for filling in a new atomic state. |
58 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 59 | */ |
036ef573 ML |
60 | int |
61 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 62 | { |
d34f20d6 RC |
63 | /* TODO legacy paths should maybe do a better job about |
64 | * setting this appropriately? | |
65 | */ | |
66 | state->allow_modeset = true; | |
67 | ||
f52b69f1 DV |
68 | state->num_connector = ACCESS_ONCE(dev->mode_config.num_connector); |
69 | ||
cc4ceb48 DV |
70 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
71 | sizeof(*state->crtcs), GFP_KERNEL); | |
72 | if (!state->crtcs) | |
73 | goto fail; | |
74 | state->crtc_states = kcalloc(dev->mode_config.num_crtc, | |
75 | sizeof(*state->crtc_states), GFP_KERNEL); | |
76 | if (!state->crtc_states) | |
77 | goto fail; | |
78 | state->planes = kcalloc(dev->mode_config.num_total_plane, | |
79 | sizeof(*state->planes), GFP_KERNEL); | |
80 | if (!state->planes) | |
81 | goto fail; | |
82 | state->plane_states = kcalloc(dev->mode_config.num_total_plane, | |
83 | sizeof(*state->plane_states), GFP_KERNEL); | |
84 | if (!state->plane_states) | |
85 | goto fail; | |
f52b69f1 | 86 | state->connectors = kcalloc(state->num_connector, |
cc4ceb48 DV |
87 | sizeof(*state->connectors), |
88 | GFP_KERNEL); | |
89 | if (!state->connectors) | |
90 | goto fail; | |
f52b69f1 | 91 | state->connector_states = kcalloc(state->num_connector, |
cc4ceb48 DV |
92 | sizeof(*state->connector_states), |
93 | GFP_KERNEL); | |
94 | if (!state->connector_states) | |
95 | goto fail; | |
96 | ||
97 | state->dev = dev; | |
98 | ||
036ef573 | 99 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 100 | |
036ef573 | 101 | return 0; |
cc4ceb48 | 102 | fail: |
036ef573 ML |
103 | drm_atomic_state_default_release(state); |
104 | return -ENOMEM; | |
105 | } | |
106 | EXPORT_SYMBOL(drm_atomic_state_init); | |
107 | ||
108 | /** | |
109 | * drm_atomic_state_alloc - allocate atomic state | |
110 | * @dev: DRM device | |
111 | * | |
112 | * This allocates an empty atomic state to track updates. | |
113 | */ | |
114 | struct drm_atomic_state * | |
115 | drm_atomic_state_alloc(struct drm_device *dev) | |
116 | { | |
117 | struct drm_mode_config *config = &dev->mode_config; | |
118 | struct drm_atomic_state *state; | |
119 | ||
120 | if (!config->funcs->atomic_state_alloc) { | |
121 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
122 | if (!state) | |
123 | return NULL; | |
124 | if (drm_atomic_state_init(dev, state) < 0) { | |
125 | kfree(state); | |
126 | return NULL; | |
127 | } | |
128 | return state; | |
129 | } | |
cc4ceb48 | 130 | |
036ef573 | 131 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
132 | } |
133 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
134 | ||
135 | /** | |
036ef573 | 136 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
137 | * @state: atomic state |
138 | * | |
036ef573 ML |
139 | * Default implementation for clearing atomic state. |
140 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 141 | */ |
036ef573 | 142 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
143 | { |
144 | struct drm_device *dev = state->dev; | |
6f75cea6 | 145 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
146 | int i; |
147 | ||
17a38d9c | 148 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 149 | |
f52b69f1 | 150 | for (i = 0; i < state->num_connector; i++) { |
cc4ceb48 DV |
151 | struct drm_connector *connector = state->connectors[i]; |
152 | ||
153 | if (!connector) | |
154 | continue; | |
155 | ||
460e8e2c DV |
156 | /* |
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. | |
162 | */ | |
163 | state->connector_states[i]->connector = NULL; | |
164 | connector->funcs->atomic_destroy_state(NULL, | |
cc4ceb48 | 165 | state->connector_states[i]); |
8a5c0bde | 166 | state->connectors[i] = NULL; |
9469244d | 167 | state->connector_states[i] = NULL; |
cc4ceb48 DV |
168 | } |
169 | ||
6f75cea6 | 170 | for (i = 0; i < config->num_crtc; i++) { |
cc4ceb48 DV |
171 | struct drm_crtc *crtc = state->crtcs[i]; |
172 | ||
173 | if (!crtc) | |
174 | continue; | |
175 | ||
176 | crtc->funcs->atomic_destroy_state(crtc, | |
177 | state->crtc_states[i]); | |
8a5c0bde | 178 | state->crtcs[i] = NULL; |
9469244d | 179 | state->crtc_states[i] = NULL; |
cc4ceb48 DV |
180 | } |
181 | ||
6f75cea6 | 182 | for (i = 0; i < config->num_total_plane; i++) { |
cc4ceb48 DV |
183 | struct drm_plane *plane = state->planes[i]; |
184 | ||
185 | if (!plane) | |
186 | continue; | |
187 | ||
188 | plane->funcs->atomic_destroy_state(plane, | |
189 | state->plane_states[i]); | |
8a5c0bde | 190 | state->planes[i] = NULL; |
9469244d | 191 | state->plane_states[i] = NULL; |
cc4ceb48 DV |
192 | } |
193 | } | |
036ef573 ML |
194 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
195 | ||
196 | /** | |
197 | * drm_atomic_state_clear - clear state object | |
198 | * @state: atomic state | |
199 | * | |
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 | |
205 | * relies on. | |
206 | * | |
207 | * Hence we must clear all cached state and completely start over, using this | |
208 | * function. | |
209 | */ | |
210 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
211 | { | |
212 | struct drm_device *dev = state->dev; | |
213 | struct drm_mode_config *config = &dev->mode_config; | |
214 | ||
215 | if (config->funcs->atomic_state_clear) | |
216 | config->funcs->atomic_state_clear(state); | |
217 | else | |
218 | drm_atomic_state_default_clear(state); | |
219 | } | |
cc4ceb48 DV |
220 | EXPORT_SYMBOL(drm_atomic_state_clear); |
221 | ||
222 | /** | |
223 | * drm_atomic_state_free - free all memory for an atomic state | |
224 | * @state: atomic state to deallocate | |
225 | * | |
226 | * This frees all memory associated with an atomic state, including all the | |
227 | * per-object state for planes, crtcs and connectors. | |
228 | */ | |
229 | void drm_atomic_state_free(struct drm_atomic_state *state) | |
230 | { | |
036ef573 ML |
231 | struct drm_device *dev; |
232 | struct drm_mode_config *config; | |
233 | ||
a0211bb4 ACO |
234 | if (!state) |
235 | return; | |
236 | ||
036ef573 ML |
237 | dev = state->dev; |
238 | config = &dev->mode_config; | |
239 | ||
cc4ceb48 DV |
240 | drm_atomic_state_clear(state); |
241 | ||
17a38d9c | 242 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 243 | |
036ef573 ML |
244 | if (config->funcs->atomic_state_free) { |
245 | config->funcs->atomic_state_free(state); | |
246 | } else { | |
247 | drm_atomic_state_default_release(state); | |
248 | kfree(state); | |
249 | } | |
cc4ceb48 DV |
250 | } |
251 | EXPORT_SYMBOL(drm_atomic_state_free); | |
252 | ||
253 | /** | |
254 | * drm_atomic_get_crtc_state - get crtc state | |
255 | * @state: global atomic state object | |
256 | * @crtc: crtc to get state object for | |
257 | * | |
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 | |
260 | * is consistent. | |
261 | * | |
262 | * Returns: | |
263 | * | |
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. | |
267 | */ | |
268 | struct drm_crtc_state * | |
269 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
270 | struct drm_crtc *crtc) | |
271 | { | |
1b26a5e1 | 272 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
273 | struct drm_crtc_state *crtc_state; |
274 | ||
1b26a5e1 ML |
275 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
276 | if (crtc_state) | |
277 | return crtc_state; | |
cc4ceb48 DV |
278 | |
279 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
280 | if (ret) | |
281 | return ERR_PTR(ret); | |
282 | ||
283 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
284 | if (!crtc_state) | |
285 | return ERR_PTR(-ENOMEM); | |
286 | ||
287 | state->crtc_states[index] = crtc_state; | |
288 | state->crtcs[index] = crtc; | |
289 | crtc_state->state = state; | |
290 | ||
fa3ab4c2 VS |
291 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
292 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
293 | |
294 | return crtc_state; | |
295 | } | |
296 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
297 | ||
819364da DS |
298 | /** |
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 | |
302 | * | |
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 | |
305 | * mode_changed. | |
306 | * | |
307 | * RETURNS: | |
308 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
309 | */ | |
310 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
311 | struct drm_display_mode *mode) | |
312 | { | |
99cf4a29 DS |
313 | struct drm_mode_modeinfo umode; |
314 | ||
819364da DS |
315 | /* Early return for no change. */ |
316 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
317 | return 0; | |
318 | ||
5f911905 | 319 | drm_property_unreference_blob(state->mode_blob); |
99cf4a29 DS |
320 | state->mode_blob = NULL; |
321 | ||
819364da | 322 | if (mode) { |
99cf4a29 DS |
323 | drm_mode_convert_to_umode(&umode, mode); |
324 | state->mode_blob = | |
325 | drm_property_create_blob(state->crtc->dev, | |
326 | sizeof(umode), | |
327 | &umode); | |
328 | if (IS_ERR(state->mode_blob)) | |
329 | return PTR_ERR(state->mode_blob); | |
330 | ||
819364da DS |
331 | drm_mode_copy(&state->mode, mode); |
332 | state->enable = true; | |
333 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
334 | mode->name, state); | |
335 | } else { | |
336 | memset(&state->mode, 0, sizeof(state->mode)); | |
337 | state->enable = false; | |
338 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
339 | state); | |
340 | } | |
341 | ||
342 | return 0; | |
343 | } | |
344 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
345 | ||
955f3c33 DS |
346 | /** |
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 | |
350 | * | |
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 | |
354 | * was set. | |
355 | * | |
356 | * RETURNS: | |
357 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
358 | */ | |
359 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
360 | struct drm_property_blob *blob) | |
361 | { | |
362 | if (blob == state->mode_blob) | |
363 | return 0; | |
364 | ||
5f911905 | 365 | drm_property_unreference_blob(state->mode_blob); |
955f3c33 DS |
366 | state->mode_blob = NULL; |
367 | ||
368 | if (blob) { | |
369 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
370 | drm_mode_convert_umode(&state->mode, | |
371 | (const struct drm_mode_modeinfo *) | |
372 | blob->data)) | |
373 | return -EINVAL; | |
374 | ||
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); | |
379 | } else { | |
380 | memset(&state->mode, 0, sizeof(state->mode)); | |
381 | state->enable = false; | |
382 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
383 | state); | |
384 | } | |
385 | ||
386 | return 0; | |
387 | } | |
388 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
389 | ||
40ecc694 RC |
390 | /** |
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 | |
396 | * | |
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. | |
402 | * | |
403 | * RETURNS: | |
404 | * Zero on success, error code on failure | |
405 | */ | |
406 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
407 | struct drm_crtc_state *state, struct drm_property *property, | |
408 | uint64_t val) | |
409 | { | |
eab3bbef DV |
410 | struct drm_device *dev = crtc->dev; |
411 | struct drm_mode_config *config = &dev->mode_config; | |
955f3c33 | 412 | int ret; |
eab3bbef | 413 | |
27798365 | 414 | if (property == config->prop_active) |
eab3bbef | 415 | state->active = val; |
955f3c33 DS |
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); | |
5f911905 | 420 | drm_property_unreference_blob(mode); |
955f3c33 DS |
421 | return ret; |
422 | } | |
27798365 | 423 | else if (crtc->funcs->atomic_set_property) |
40ecc694 | 424 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
425 | else |
426 | return -EINVAL; | |
427 | ||
428 | return 0; | |
40ecc694 RC |
429 | } |
430 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
431 | ||
c0714fc9 DV |
432 | /** |
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 | |
438 | * | |
ac9c9256 RC |
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. | |
c0714fc9 DV |
443 | * |
444 | * RETURNS: | |
445 | * Zero on success, error code on failure | |
ac9c9256 | 446 | */ |
bf22f3be GT |
447 | static int |
448 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
449 | const struct drm_crtc_state *state, |
450 | struct drm_property *property, uint64_t *val) | |
451 | { | |
8f164ce4 DS |
452 | struct drm_device *dev = crtc->dev; |
453 | struct drm_mode_config *config = &dev->mode_config; | |
454 | ||
455 | if (property == config->prop_active) | |
456 | *val = state->active; | |
955f3c33 DS |
457 | else if (property == config->prop_mode_id) |
458 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
8f164ce4 | 459 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 460 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
461 | else |
462 | return -EINVAL; | |
463 | ||
464 | return 0; | |
ac9c9256 | 465 | } |
ac9c9256 | 466 | |
5e743737 RC |
467 | /** |
468 | * drm_atomic_crtc_check - check crtc state | |
469 | * @crtc: crtc to check | |
470 | * @state: crtc state to check | |
471 | * | |
472 | * Provides core sanity checks for crtc state. | |
473 | * | |
474 | * RETURNS: | |
475 | * Zero on success, error code on failure | |
476 | */ | |
477 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
478 | struct drm_crtc_state *state) | |
479 | { | |
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. | |
484 | * | |
485 | * TODO: Add generic modeset state checks once we support those. | |
486 | */ | |
eab3bbef DV |
487 | |
488 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
489 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
490 | crtc->base.id, crtc->name); | |
eab3bbef DV |
491 | return -EINVAL; |
492 | } | |
493 | ||
99cf4a29 DS |
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)) { | |
fa3ab4c2 VS |
499 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
500 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
501 | return -EINVAL; |
502 | } | |
503 | ||
504 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
505 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
506 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
507 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
508 | return -EINVAL; |
509 | } | |
510 | ||
5e743737 RC |
511 | return 0; |
512 | } | |
513 | ||
cc4ceb48 DV |
514 | /** |
515 | * drm_atomic_get_plane_state - get plane state | |
516 | * @state: global atomic state object | |
517 | * @plane: plane to get state object for | |
518 | * | |
519 | * This function returns the plane state for the given plane, allocating it if | |
520 | * needed. It will also grab the relevant plane lock to make sure that the state | |
521 | * is consistent. | |
522 | * | |
523 | * Returns: | |
524 | * | |
525 | * Either the allocated state or the error code encoded into the pointer. When | |
526 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
527 | * entire atomic sequence must be restarted. All other errors are fatal. | |
528 | */ | |
529 | struct drm_plane_state * | |
530 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
531 | struct drm_plane *plane) | |
532 | { | |
1b26a5e1 | 533 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
534 | struct drm_plane_state *plane_state; |
535 | ||
1b26a5e1 ML |
536 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
537 | if (plane_state) | |
538 | return plane_state; | |
cc4ceb48 | 539 | |
4d02e2de | 540 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
541 | if (ret) |
542 | return ERR_PTR(ret); | |
543 | ||
544 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
545 | if (!plane_state) | |
546 | return ERR_PTR(-ENOMEM); | |
547 | ||
548 | state->plane_states[index] = plane_state; | |
549 | state->planes[index] = plane; | |
550 | plane_state->state = state; | |
551 | ||
9f4c97a2 VS |
552 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
553 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
554 | |
555 | if (plane_state->crtc) { | |
556 | struct drm_crtc_state *crtc_state; | |
557 | ||
558 | crtc_state = drm_atomic_get_crtc_state(state, | |
559 | plane_state->crtc); | |
560 | if (IS_ERR(crtc_state)) | |
561 | return ERR_CAST(crtc_state); | |
562 | } | |
563 | ||
564 | return plane_state; | |
565 | } | |
566 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
567 | ||
40ecc694 RC |
568 | /** |
569 | * drm_atomic_plane_set_property - set property on plane | |
570 | * @plane: the drm plane to set a property on | |
571 | * @state: the state object to update with the new property value | |
572 | * @property: the property to set | |
573 | * @val: the new property value | |
574 | * | |
575 | * Use this instead of calling plane->atomic_set_property directly. | |
576 | * This function handles generic/core properties and calls out to | |
577 | * driver's ->atomic_set_property() for driver properties. To ensure | |
578 | * consistent behavior you must call this function rather than the | |
579 | * driver hook directly. | |
580 | * | |
581 | * RETURNS: | |
582 | * Zero on success, error code on failure | |
583 | */ | |
584 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
585 | struct drm_plane_state *state, struct drm_property *property, | |
586 | uint64_t val) | |
587 | { | |
6b4959f4 RC |
588 | struct drm_device *dev = plane->dev; |
589 | struct drm_mode_config *config = &dev->mode_config; | |
590 | ||
591 | if (property == config->prop_fb_id) { | |
592 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
593 | drm_atomic_set_fb_for_plane(state, fb); | |
594 | if (fb) | |
595 | drm_framebuffer_unreference(fb); | |
596 | } else if (property == config->prop_crtc_id) { | |
597 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
598 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
599 | } else if (property == config->prop_crtc_x) { | |
600 | state->crtc_x = U642I64(val); | |
601 | } else if (property == config->prop_crtc_y) { | |
602 | state->crtc_y = U642I64(val); | |
603 | } else if (property == config->prop_crtc_w) { | |
604 | state->crtc_w = val; | |
605 | } else if (property == config->prop_crtc_h) { | |
606 | state->crtc_h = val; | |
607 | } else if (property == config->prop_src_x) { | |
608 | state->src_x = val; | |
609 | } else if (property == config->prop_src_y) { | |
610 | state->src_y = val; | |
611 | } else if (property == config->prop_src_w) { | |
612 | state->src_w = val; | |
613 | } else if (property == config->prop_src_h) { | |
614 | state->src_h = val; | |
1da30627 MR |
615 | } else if (property == config->rotation_property) { |
616 | state->rotation = val; | |
6b4959f4 RC |
617 | } else if (plane->funcs->atomic_set_property) { |
618 | return plane->funcs->atomic_set_property(plane, state, | |
619 | property, val); | |
620 | } else { | |
621 | return -EINVAL; | |
622 | } | |
623 | ||
624 | return 0; | |
40ecc694 RC |
625 | } |
626 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
627 | ||
c0714fc9 DV |
628 | /** |
629 | * drm_atomic_plane_get_property - get property value from plane state | |
630 | * @plane: the drm plane to set a property on | |
631 | * @state: the state object to get the property value from | |
632 | * @property: the property to set | |
633 | * @val: return location for the property value | |
634 | * | |
ac9c9256 RC |
635 | * This function handles generic/core properties and calls out to |
636 | * driver's ->atomic_get_property() for driver properties. To ensure | |
637 | * consistent behavior you must call this function rather than the | |
638 | * driver hook directly. | |
c0714fc9 DV |
639 | * |
640 | * RETURNS: | |
641 | * Zero on success, error code on failure | |
ac9c9256 | 642 | */ |
a97df1cc DV |
643 | static int |
644 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
645 | const struct drm_plane_state *state, |
646 | struct drm_property *property, uint64_t *val) | |
647 | { | |
6b4959f4 RC |
648 | struct drm_device *dev = plane->dev; |
649 | struct drm_mode_config *config = &dev->mode_config; | |
650 | ||
651 | if (property == config->prop_fb_id) { | |
652 | *val = (state->fb) ? state->fb->base.id : 0; | |
653 | } else if (property == config->prop_crtc_id) { | |
654 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
655 | } else if (property == config->prop_crtc_x) { | |
656 | *val = I642U64(state->crtc_x); | |
657 | } else if (property == config->prop_crtc_y) { | |
658 | *val = I642U64(state->crtc_y); | |
659 | } else if (property == config->prop_crtc_w) { | |
660 | *val = state->crtc_w; | |
661 | } else if (property == config->prop_crtc_h) { | |
662 | *val = state->crtc_h; | |
663 | } else if (property == config->prop_src_x) { | |
664 | *val = state->src_x; | |
665 | } else if (property == config->prop_src_y) { | |
666 | *val = state->src_y; | |
667 | } else if (property == config->prop_src_w) { | |
668 | *val = state->src_w; | |
669 | } else if (property == config->prop_src_h) { | |
670 | *val = state->src_h; | |
4cda09ca TU |
671 | } else if (property == config->rotation_property) { |
672 | *val = state->rotation; | |
6b4959f4 | 673 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 674 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
675 | } else { |
676 | return -EINVAL; | |
677 | } | |
678 | ||
679 | return 0; | |
ac9c9256 | 680 | } |
ac9c9256 | 681 | |
f8aeb41c DV |
682 | static bool |
683 | plane_switching_crtc(struct drm_atomic_state *state, | |
684 | struct drm_plane *plane, | |
685 | struct drm_plane_state *plane_state) | |
686 | { | |
687 | if (!plane->state->crtc || !plane_state->crtc) | |
688 | return false; | |
689 | ||
690 | if (plane->state->crtc == plane_state->crtc) | |
691 | return false; | |
692 | ||
693 | /* This could be refined, but currently there's no helper or driver code | |
694 | * to implement direct switching of active planes nor userspace to take | |
695 | * advantage of more direct plane switching without the intermediate | |
696 | * full OFF state. | |
697 | */ | |
698 | return true; | |
699 | } | |
700 | ||
5e743737 RC |
701 | /** |
702 | * drm_atomic_plane_check - check plane state | |
703 | * @plane: plane to check | |
704 | * @state: plane state to check | |
705 | * | |
706 | * Provides core sanity checks for plane state. | |
707 | * | |
708 | * RETURNS: | |
709 | * Zero on success, error code on failure | |
710 | */ | |
711 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
712 | struct drm_plane_state *state) | |
713 | { | |
714 | unsigned int fb_width, fb_height; | |
ead8610d | 715 | int ret; |
5e743737 RC |
716 | |
717 | /* either *both* CRTC and FB must be set, or neither */ | |
718 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 719 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
720 | return -EINVAL; |
721 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 722 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
723 | return -EINVAL; |
724 | } | |
725 | ||
726 | /* if disabled, we don't care about the rest of the state: */ | |
727 | if (!state->crtc) | |
728 | return 0; | |
729 | ||
730 | /* Check whether this plane is usable on this CRTC */ | |
731 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 732 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
733 | return -EINVAL; |
734 | } | |
735 | ||
736 | /* Check whether this plane supports the fb pixel format. */ | |
ead8610d LP |
737 | ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format); |
738 | if (ret) { | |
17a38d9c DV |
739 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", |
740 | drm_get_format_name(state->fb->pixel_format)); | |
ead8610d | 741 | return ret; |
5e743737 RC |
742 | } |
743 | ||
744 | /* Give drivers some help against integer overflows */ | |
745 | if (state->crtc_w > INT_MAX || | |
746 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
747 | state->crtc_h > INT_MAX || | |
748 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
749 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
750 | state->crtc_w, state->crtc_h, | |
751 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
752 | return -ERANGE; |
753 | } | |
754 | ||
755 | fb_width = state->fb->width << 16; | |
756 | fb_height = state->fb->height << 16; | |
757 | ||
758 | /* Make sure source coordinates are inside the fb. */ | |
759 | if (state->src_w > fb_width || | |
760 | state->src_x > fb_width - state->src_w || | |
761 | state->src_h > fb_height || | |
762 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
763 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
764 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
765 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
766 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
767 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
768 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
769 | return -ENOSPC; |
770 | } | |
771 | ||
f8aeb41c | 772 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
773 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
774 | plane->base.id, plane->name); | |
f8aeb41c DV |
775 | return -EINVAL; |
776 | } | |
777 | ||
5e743737 RC |
778 | return 0; |
779 | } | |
780 | ||
cc4ceb48 DV |
781 | /** |
782 | * drm_atomic_get_connector_state - get connector state | |
783 | * @state: global atomic state object | |
784 | * @connector: connector to get state object for | |
785 | * | |
786 | * This function returns the connector state for the given connector, | |
787 | * allocating it if needed. It will also grab the relevant connector lock to | |
788 | * make sure that the state is consistent. | |
789 | * | |
790 | * Returns: | |
791 | * | |
792 | * Either the allocated state or the error code encoded into the pointer. When | |
793 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
794 | * entire atomic sequence must be restarted. All other errors are fatal. | |
795 | */ | |
796 | struct drm_connector_state * | |
797 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
798 | struct drm_connector *connector) | |
799 | { | |
800 | int ret, index; | |
801 | struct drm_mode_config *config = &connector->dev->mode_config; | |
802 | struct drm_connector_state *connector_state; | |
803 | ||
c7eb76f4 DV |
804 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
805 | if (ret) | |
806 | return ERR_PTR(ret); | |
807 | ||
cc4ceb48 DV |
808 | index = drm_connector_index(connector); |
809 | ||
f52b69f1 DV |
810 | /* |
811 | * Construction of atomic state updates can race with a connector | |
812 | * hot-add which might overflow. In this case flip the table and just | |
813 | * restart the entire ioctl - no one is fast enough to livelock a cpu | |
814 | * with physical hotplug events anyway. | |
815 | * | |
816 | * Note that we only grab the indexes once we have the right lock to | |
817 | * prevent hotplug/unplugging of connectors. So removal is no problem, | |
818 | * at most the array is a bit too large. | |
819 | */ | |
820 | if (index >= state->num_connector) { | |
17a38d9c | 821 | DRM_DEBUG_ATOMIC("Hot-added connector would overflow state array, restarting\n"); |
fc2d2bc1 | 822 | return ERR_PTR(-EAGAIN); |
f52b69f1 DV |
823 | } |
824 | ||
cc4ceb48 DV |
825 | if (state->connector_states[index]) |
826 | return state->connector_states[index]; | |
827 | ||
cc4ceb48 DV |
828 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
829 | if (!connector_state) | |
830 | return ERR_PTR(-ENOMEM); | |
831 | ||
832 | state->connector_states[index] = connector_state; | |
833 | state->connectors[index] = connector; | |
834 | connector_state->state = state; | |
835 | ||
17a38d9c DV |
836 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", |
837 | connector->base.id, connector_state, state); | |
cc4ceb48 DV |
838 | |
839 | if (connector_state->crtc) { | |
840 | struct drm_crtc_state *crtc_state; | |
841 | ||
842 | crtc_state = drm_atomic_get_crtc_state(state, | |
843 | connector_state->crtc); | |
844 | if (IS_ERR(crtc_state)) | |
845 | return ERR_CAST(crtc_state); | |
846 | } | |
847 | ||
848 | return connector_state; | |
849 | } | |
850 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
851 | ||
40ecc694 RC |
852 | /** |
853 | * drm_atomic_connector_set_property - set property on connector. | |
854 | * @connector: the drm connector to set a property on | |
855 | * @state: the state object to update with the new property value | |
856 | * @property: the property to set | |
857 | * @val: the new property value | |
858 | * | |
859 | * Use this instead of calling connector->atomic_set_property directly. | |
860 | * This function handles generic/core properties and calls out to | |
861 | * driver's ->atomic_set_property() for driver properties. To ensure | |
862 | * consistent behavior you must call this function rather than the | |
863 | * driver hook directly. | |
864 | * | |
865 | * RETURNS: | |
866 | * Zero on success, error code on failure | |
867 | */ | |
868 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
869 | struct drm_connector_state *state, struct drm_property *property, | |
870 | uint64_t val) | |
871 | { | |
872 | struct drm_device *dev = connector->dev; | |
873 | struct drm_mode_config *config = &dev->mode_config; | |
874 | ||
ae16c597 RC |
875 | if (property == config->prop_crtc_id) { |
876 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
877 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
878 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
879 | /* setting DPMS property requires special handling, which |
880 | * is done in legacy setprop path for us. Disallow (for | |
881 | * now?) atomic writes to DPMS property: | |
882 | */ | |
883 | return -EINVAL; | |
884 | } else if (connector->funcs->atomic_set_property) { | |
885 | return connector->funcs->atomic_set_property(connector, | |
886 | state, property, val); | |
887 | } else { | |
888 | return -EINVAL; | |
889 | } | |
890 | } | |
891 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
892 | ||
c0714fc9 DV |
893 | /** |
894 | * drm_atomic_connector_get_property - get property value from connector state | |
895 | * @connector: the drm connector to set a property on | |
896 | * @state: the state object to get the property value from | |
897 | * @property: the property to set | |
898 | * @val: return location for the property value | |
899 | * | |
ac9c9256 RC |
900 | * This function handles generic/core properties and calls out to |
901 | * driver's ->atomic_get_property() for driver properties. To ensure | |
902 | * consistent behavior you must call this function rather than the | |
903 | * driver hook directly. | |
c0714fc9 DV |
904 | * |
905 | * RETURNS: | |
906 | * Zero on success, error code on failure | |
ac9c9256 | 907 | */ |
a97df1cc DV |
908 | static int |
909 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
910 | const struct drm_connector_state *state, |
911 | struct drm_property *property, uint64_t *val) | |
912 | { | |
913 | struct drm_device *dev = connector->dev; | |
914 | struct drm_mode_config *config = &dev->mode_config; | |
915 | ||
ae16c597 RC |
916 | if (property == config->prop_crtc_id) { |
917 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
918 | } else if (property == config->dpms_property) { | |
ac9c9256 RC |
919 | *val = connector->dpms; |
920 | } else if (connector->funcs->atomic_get_property) { | |
921 | return connector->funcs->atomic_get_property(connector, | |
922 | state, property, val); | |
923 | } else { | |
924 | return -EINVAL; | |
925 | } | |
926 | ||
927 | return 0; | |
928 | } | |
ac9c9256 | 929 | |
88a48e29 RC |
930 | int drm_atomic_get_property(struct drm_mode_object *obj, |
931 | struct drm_property *property, uint64_t *val) | |
932 | { | |
933 | struct drm_device *dev = property->dev; | |
934 | int ret; | |
935 | ||
936 | switch (obj->type) { | |
937 | case DRM_MODE_OBJECT_CONNECTOR: { | |
938 | struct drm_connector *connector = obj_to_connector(obj); | |
939 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
940 | ret = drm_atomic_connector_get_property(connector, | |
941 | connector->state, property, val); | |
942 | break; | |
943 | } | |
944 | case DRM_MODE_OBJECT_CRTC: { | |
945 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
946 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
947 | ret = drm_atomic_crtc_get_property(crtc, | |
948 | crtc->state, property, val); | |
949 | break; | |
950 | } | |
951 | case DRM_MODE_OBJECT_PLANE: { | |
952 | struct drm_plane *plane = obj_to_plane(obj); | |
953 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
954 | ret = drm_atomic_plane_get_property(plane, | |
955 | plane->state, property, val); | |
956 | break; | |
957 | } | |
958 | default: | |
959 | ret = -EINVAL; | |
960 | break; | |
961 | } | |
962 | ||
963 | return ret; | |
964 | } | |
965 | ||
cc4ceb48 DV |
966 | /** |
967 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 968 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
969 | * @crtc: crtc to use for the plane |
970 | * | |
971 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
972 | * for the new crtc, as needed. This function takes care of all these details | |
973 | * besides updating the pointer in the state object itself. | |
974 | * | |
975 | * Returns: | |
976 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
977 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
978 | * sequence must be restarted. All other errors are fatal. | |
979 | */ | |
980 | int | |
07cc0ef6 DV |
981 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
982 | struct drm_crtc *crtc) | |
cc4ceb48 | 983 | { |
07cc0ef6 | 984 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
985 | struct drm_crtc_state *crtc_state; |
986 | ||
6ddd388a RC |
987 | if (plane_state->crtc) { |
988 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
989 | plane_state->crtc); | |
990 | if (WARN_ON(IS_ERR(crtc_state))) | |
991 | return PTR_ERR(crtc_state); | |
992 | ||
993 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
994 | } | |
995 | ||
996 | plane_state->crtc = crtc; | |
997 | ||
cc4ceb48 DV |
998 | if (crtc) { |
999 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1000 | crtc); | |
1001 | if (IS_ERR(crtc_state)) | |
1002 | return PTR_ERR(crtc_state); | |
6ddd388a | 1003 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1004 | } |
1005 | ||
cc4ceb48 | 1006 | if (crtc) |
fa3ab4c2 VS |
1007 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1008 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1009 | else |
17a38d9c DV |
1010 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1011 | plane_state); | |
cc4ceb48 DV |
1012 | |
1013 | return 0; | |
1014 | } | |
1015 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1016 | ||
321ebf04 | 1017 | /** |
16d78bc2 | 1018 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1019 | * @plane_state: atomic state object for the plane |
1020 | * @fb: fb to use for the plane | |
1021 | * | |
1022 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1023 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1024 | * function takes care of all these details besides updating the pointer in the | |
1025 | * state object itself. | |
1026 | */ | |
1027 | void | |
1028 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1029 | struct drm_framebuffer *fb) | |
1030 | { | |
1031 | if (plane_state->fb) | |
1032 | drm_framebuffer_unreference(plane_state->fb); | |
1033 | if (fb) | |
1034 | drm_framebuffer_reference(fb); | |
1035 | plane_state->fb = fb; | |
1036 | ||
1037 | if (fb) | |
17a38d9c DV |
1038 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1039 | fb->base.id, plane_state); | |
321ebf04 | 1040 | else |
17a38d9c DV |
1041 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1042 | plane_state); | |
321ebf04 DV |
1043 | } |
1044 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1045 | ||
cc4ceb48 DV |
1046 | /** |
1047 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1048 | * @conn_state: atomic state object for the connector | |
1049 | * @crtc: crtc to use for the connector | |
1050 | * | |
1051 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1052 | * state for the new crtc, as needed. This function takes care of all these | |
1053 | * details besides updating the pointer in the state object itself. | |
1054 | * | |
1055 | * Returns: | |
1056 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1057 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1058 | * sequence must be restarted. All other errors are fatal. | |
1059 | */ | |
1060 | int | |
1061 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1062 | struct drm_crtc *crtc) | |
1063 | { | |
1064 | struct drm_crtc_state *crtc_state; | |
1065 | ||
1066 | if (crtc) { | |
1067 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1068 | if (IS_ERR(crtc_state)) | |
1069 | return PTR_ERR(crtc_state); | |
1070 | } | |
1071 | ||
1072 | conn_state->crtc = crtc; | |
1073 | ||
1074 | if (crtc) | |
fa3ab4c2 VS |
1075 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1076 | conn_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1077 | else |
17a38d9c DV |
1078 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1079 | conn_state); | |
cc4ceb48 DV |
1080 | |
1081 | return 0; | |
1082 | } | |
1083 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1084 | ||
1085 | /** | |
1086 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1087 | * @state: atomic state | |
1088 | * @crtc: DRM crtc | |
1089 | * | |
1090 | * This function walks the current configuration and adds all connectors | |
1091 | * currently using @crtc to the atomic configuration @state. Note that this | |
1092 | * function must acquire the connection mutex. This can potentially cause | |
1093 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1094 | * drivers and helpers should only call this when really needed (e.g. when a | |
1095 | * full modeset needs to happen due to some change). | |
1096 | * | |
1097 | * Returns: | |
1098 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1099 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1100 | * sequence must be restarted. All other errors are fatal. | |
1101 | */ | |
1102 | int | |
1103 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1104 | struct drm_crtc *crtc) | |
1105 | { | |
1106 | struct drm_mode_config *config = &state->dev->mode_config; | |
1107 | struct drm_connector *connector; | |
1108 | struct drm_connector_state *conn_state; | |
1109 | int ret; | |
1110 | ||
1111 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1112 | if (ret) | |
1113 | return ret; | |
1114 | ||
fa3ab4c2 VS |
1115 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1116 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1117 | |
1118 | /* | |
1119 | * Changed connectors are already in @state, so only need to look at the | |
1120 | * current configuration. | |
1121 | */ | |
9a9f5ce8 | 1122 | drm_for_each_connector(connector, state->dev) { |
cc4ceb48 DV |
1123 | if (connector->state->crtc != crtc) |
1124 | continue; | |
1125 | ||
1126 | conn_state = drm_atomic_get_connector_state(state, connector); | |
1127 | if (IS_ERR(conn_state)) | |
1128 | return PTR_ERR(conn_state); | |
1129 | } | |
1130 | ||
1131 | return 0; | |
1132 | } | |
1133 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1134 | ||
e01e9f75 ML |
1135 | /** |
1136 | * drm_atomic_add_affected_planes - add planes for crtc | |
1137 | * @state: atomic state | |
1138 | * @crtc: DRM crtc | |
1139 | * | |
1140 | * This function walks the current configuration and adds all planes | |
1141 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1142 | * when an atomic commit also needs to check all currently enabled plane on | |
1143 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1144 | * to avoid special code to force-enable all planes. | |
1145 | * | |
1146 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1147 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1148 | * a CRTC will not reduce parallism of atomic updates. | |
1149 | * | |
1150 | * Returns: | |
1151 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1152 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1153 | * sequence must be restarted. All other errors are fatal. | |
1154 | */ | |
1155 | int | |
1156 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1157 | struct drm_crtc *crtc) | |
1158 | { | |
1159 | struct drm_plane *plane; | |
1160 | ||
1161 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1162 | ||
1163 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1164 | struct drm_plane_state *plane_state = | |
1165 | drm_atomic_get_plane_state(state, plane); | |
1166 | ||
1167 | if (IS_ERR(plane_state)) | |
1168 | return PTR_ERR(plane_state); | |
1169 | } | |
1170 | return 0; | |
1171 | } | |
1172 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1173 | ||
cc4ceb48 DV |
1174 | /** |
1175 | * drm_atomic_connectors_for_crtc - count number of connected outputs | |
1176 | * @state: atomic state | |
1177 | * @crtc: DRM crtc | |
1178 | * | |
1179 | * This function counts all connectors which will be connected to @crtc | |
1180 | * according to @state. Useful to recompute the enable state for @crtc. | |
1181 | */ | |
1182 | int | |
1183 | drm_atomic_connectors_for_crtc(struct drm_atomic_state *state, | |
1184 | struct drm_crtc *crtc) | |
1185 | { | |
df63b999 ACO |
1186 | struct drm_connector *connector; |
1187 | struct drm_connector_state *conn_state; | |
cc4ceb48 | 1188 | |
df63b999 | 1189 | int i, num_connected_connectors = 0; |
cc4ceb48 | 1190 | |
df63b999 ACO |
1191 | for_each_connector_in_state(state, connector, conn_state, i) { |
1192 | if (conn_state->crtc == crtc) | |
cc4ceb48 DV |
1193 | num_connected_connectors++; |
1194 | } | |
1195 | ||
fa3ab4c2 VS |
1196 | DRM_DEBUG_ATOMIC("State %p has %i connectors for [CRTC:%d:%s]\n", |
1197 | state, num_connected_connectors, | |
1198 | crtc->base.id, crtc->name); | |
cc4ceb48 DV |
1199 | |
1200 | return num_connected_connectors; | |
1201 | } | |
1202 | EXPORT_SYMBOL(drm_atomic_connectors_for_crtc); | |
1203 | ||
1204 | /** | |
1205 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1206 | * @state: atomic state | |
1207 | * | |
1208 | * This function should be used by legacy entry points which don't understand | |
1209 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1210 | * the slowpath completed. |
cc4ceb48 DV |
1211 | */ |
1212 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1213 | { | |
1214 | int ret; | |
1215 | ||
1216 | retry: | |
1217 | drm_modeset_backoff(state->acquire_ctx); | |
1218 | ||
06eaae46 | 1219 | ret = drm_modeset_lock_all_ctx(state->dev, state->acquire_ctx); |
cc4ceb48 DV |
1220 | if (ret) |
1221 | goto retry; | |
1222 | } | |
1223 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1224 | ||
1225 | /** | |
1226 | * drm_atomic_check_only - check whether a given config would work | |
1227 | * @state: atomic configuration to check | |
1228 | * | |
1229 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1230 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1231 | * backoff dance and restart. All other errors are fatal. | |
1232 | * | |
1233 | * Returns: | |
1234 | * 0 on success, negative error code on failure. | |
1235 | */ | |
1236 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1237 | { | |
5e743737 RC |
1238 | struct drm_device *dev = state->dev; |
1239 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1240 | struct drm_plane *plane; |
1241 | struct drm_plane_state *plane_state; | |
1242 | struct drm_crtc *crtc; | |
1243 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1244 | int i, ret = 0; |
cc4ceb48 | 1245 | |
17a38d9c | 1246 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1247 | |
df63b999 ACO |
1248 | for_each_plane_in_state(state, plane, plane_state, i) { |
1249 | ret = drm_atomic_plane_check(plane, plane_state); | |
5e743737 | 1250 | if (ret) { |
9f4c97a2 VS |
1251 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1252 | plane->base.id, plane->name); | |
5e743737 RC |
1253 | return ret; |
1254 | } | |
1255 | } | |
1256 | ||
df63b999 ACO |
1257 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
1258 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
5e743737 | 1259 | if (ret) { |
fa3ab4c2 VS |
1260 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1261 | crtc->base.id, crtc->name); | |
5e743737 RC |
1262 | return ret; |
1263 | } | |
1264 | } | |
1265 | ||
cc4ceb48 | 1266 | if (config->funcs->atomic_check) |
5e743737 RC |
1267 | ret = config->funcs->atomic_check(state->dev, state); |
1268 | ||
d34f20d6 | 1269 | if (!state->allow_modeset) { |
df63b999 | 1270 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1271 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1272 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1273 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1274 | return -EINVAL; |
1275 | } | |
1276 | } | |
1277 | } | |
1278 | ||
5e743737 | 1279 | return ret; |
cc4ceb48 DV |
1280 | } |
1281 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1282 | ||
1283 | /** | |
1284 | * drm_atomic_commit - commit configuration atomically | |
1285 | * @state: atomic configuration to check | |
1286 | * | |
1287 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1288 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1289 | * backoff dance and restart. All other errors are fatal. | |
1290 | * | |
1291 | * Also note that on successful execution ownership of @state is transferred | |
1292 | * from the caller of this function to the function itself. The caller must not | |
1293 | * free or in any other way access @state. If the function fails then the caller | |
1294 | * must clean up @state itself. | |
1295 | * | |
1296 | * Returns: | |
1297 | * 0 on success, negative error code on failure. | |
1298 | */ | |
1299 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1300 | { | |
1301 | struct drm_mode_config *config = &state->dev->mode_config; | |
1302 | int ret; | |
1303 | ||
1304 | ret = drm_atomic_check_only(state); | |
1305 | if (ret) | |
1306 | return ret; | |
1307 | ||
17a38d9c | 1308 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1309 | |
1310 | return config->funcs->atomic_commit(state->dev, state, false); | |
1311 | } | |
1312 | EXPORT_SYMBOL(drm_atomic_commit); | |
1313 | ||
1314 | /** | |
1315 | * drm_atomic_async_commit - atomic&async configuration commit | |
1316 | * @state: atomic configuration to check | |
1317 | * | |
1318 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1319 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1320 | * backoff dance and restart. All other errors are fatal. | |
1321 | * | |
1322 | * Also note that on successful execution ownership of @state is transferred | |
1323 | * from the caller of this function to the function itself. The caller must not | |
1324 | * free or in any other way access @state. If the function fails then the caller | |
1325 | * must clean up @state itself. | |
1326 | * | |
1327 | * Returns: | |
1328 | * 0 on success, negative error code on failure. | |
1329 | */ | |
1330 | int drm_atomic_async_commit(struct drm_atomic_state *state) | |
1331 | { | |
1332 | struct drm_mode_config *config = &state->dev->mode_config; | |
1333 | int ret; | |
1334 | ||
1335 | ret = drm_atomic_check_only(state); | |
1336 | if (ret) | |
1337 | return ret; | |
1338 | ||
17a38d9c | 1339 | DRM_DEBUG_ATOMIC("commiting %p asynchronously\n", state); |
cc4ceb48 DV |
1340 | |
1341 | return config->funcs->atomic_commit(state->dev, state, true); | |
1342 | } | |
1343 | EXPORT_SYMBOL(drm_atomic_async_commit); | |
d34f20d6 RC |
1344 | |
1345 | /* | |
1346 | * The big monstor ioctl | |
1347 | */ | |
1348 | ||
1349 | static struct drm_pending_vblank_event *create_vblank_event( | |
1350 | struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data) | |
1351 | { | |
1352 | struct drm_pending_vblank_event *e = NULL; | |
1353 | unsigned long flags; | |
1354 | ||
1355 | spin_lock_irqsave(&dev->event_lock, flags); | |
1356 | if (file_priv->event_space < sizeof e->event) { | |
1357 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1358 | goto out; | |
1359 | } | |
1360 | file_priv->event_space -= sizeof e->event; | |
1361 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1362 | ||
1363 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
1364 | if (e == NULL) { | |
1365 | spin_lock_irqsave(&dev->event_lock, flags); | |
1366 | file_priv->event_space += sizeof e->event; | |
1367 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1368 | goto out; | |
1369 | } | |
1370 | ||
1371 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
1372 | e->event.base.length = sizeof e->event; | |
1373 | e->event.user_data = user_data; | |
1374 | e->base.event = &e->event.base; | |
1375 | e->base.file_priv = file_priv; | |
1376 | e->base.destroy = (void (*) (struct drm_pending_event *)) kfree; | |
1377 | ||
1378 | out: | |
1379 | return e; | |
1380 | } | |
1381 | ||
1382 | static void destroy_vblank_event(struct drm_device *dev, | |
1383 | struct drm_file *file_priv, struct drm_pending_vblank_event *e) | |
1384 | { | |
1385 | unsigned long flags; | |
1386 | ||
1387 | spin_lock_irqsave(&dev->event_lock, flags); | |
1388 | file_priv->event_space += sizeof e->event; | |
1389 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1390 | kfree(e); | |
1391 | } | |
1392 | ||
1393 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1394 | struct drm_mode_object *obj, struct drm_property *prop, | |
1395 | uint64_t prop_value) | |
1396 | { | |
1397 | struct drm_mode_object *ref; | |
1398 | int ret; | |
1399 | ||
1400 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1401 | return -EINVAL; | |
1402 | ||
1403 | switch (obj->type) { | |
1404 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1405 | struct drm_connector *connector = obj_to_connector(obj); | |
1406 | struct drm_connector_state *connector_state; | |
1407 | ||
1408 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1409 | if (IS_ERR(connector_state)) { | |
1410 | ret = PTR_ERR(connector_state); | |
1411 | break; | |
1412 | } | |
1413 | ||
1414 | ret = drm_atomic_connector_set_property(connector, | |
1415 | connector_state, prop, prop_value); | |
1416 | break; | |
1417 | } | |
1418 | case DRM_MODE_OBJECT_CRTC: { | |
1419 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1420 | struct drm_crtc_state *crtc_state; | |
1421 | ||
1422 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1423 | if (IS_ERR(crtc_state)) { | |
1424 | ret = PTR_ERR(crtc_state); | |
1425 | break; | |
1426 | } | |
1427 | ||
1428 | ret = drm_atomic_crtc_set_property(crtc, | |
1429 | crtc_state, prop, prop_value); | |
1430 | break; | |
1431 | } | |
1432 | case DRM_MODE_OBJECT_PLANE: { | |
1433 | struct drm_plane *plane = obj_to_plane(obj); | |
1434 | struct drm_plane_state *plane_state; | |
1435 | ||
1436 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1437 | if (IS_ERR(plane_state)) { | |
1438 | ret = PTR_ERR(plane_state); | |
1439 | break; | |
1440 | } | |
1441 | ||
1442 | ret = drm_atomic_plane_set_property(plane, | |
1443 | plane_state, prop, prop_value); | |
1444 | break; | |
1445 | } | |
1446 | default: | |
1447 | ret = -EINVAL; | |
1448 | break; | |
1449 | } | |
1450 | ||
1451 | drm_property_change_valid_put(prop, ref); | |
1452 | return ret; | |
1453 | } | |
1454 | ||
0f45c26f | 1455 | /** |
9744bf41 | 1456 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1457 | * |
1458 | * @dev: drm device to check. | |
1459 | * @plane_mask: plane mask for planes that were updated. | |
1460 | * @ret: return value, can be -EDEADLK for a retry. | |
1461 | * | |
1462 | * Before doing an update plane->old_fb is set to plane->fb, | |
1463 | * but before dropping the locks old_fb needs to be set to NULL | |
1464 | * and plane->fb updated. This is a common operation for each | |
1465 | * atomic update, so this call is split off as a helper. | |
1466 | */ | |
1467 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1468 | unsigned plane_mask, | |
1469 | int ret) | |
1470 | { | |
1471 | struct drm_plane *plane; | |
1472 | ||
1473 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1474 | * locks (ie. while it is still safe to deref plane->state). We | |
1475 | * need to do this here because the driver entry points cannot | |
1476 | * distinguish between legacy and atomic ioctls. | |
1477 | */ | |
1478 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1479 | if (ret == 0) { | |
1480 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1481 | if (new_fb) | |
1482 | drm_framebuffer_reference(new_fb); | |
1483 | plane->fb = new_fb; | |
1484 | plane->crtc = plane->state->crtc; | |
1485 | ||
1486 | if (plane->old_fb) | |
1487 | drm_framebuffer_unreference(plane->old_fb); | |
1488 | } | |
1489 | plane->old_fb = NULL; | |
1490 | } | |
1491 | } | |
1492 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1493 | ||
d34f20d6 RC |
1494 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
1495 | void *data, struct drm_file *file_priv) | |
1496 | { | |
1497 | struct drm_mode_atomic *arg = data; | |
1498 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
1499 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
1500 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
1501 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
1502 | unsigned int copied_objs, copied_props; | |
1503 | struct drm_atomic_state *state; | |
1504 | struct drm_modeset_acquire_ctx ctx; | |
1505 | struct drm_plane *plane; | |
df63b999 ACO |
1506 | struct drm_crtc *crtc; |
1507 | struct drm_crtc_state *crtc_state; | |
45723728 | 1508 | unsigned plane_mask; |
d34f20d6 RC |
1509 | int ret = 0; |
1510 | unsigned int i, j; | |
1511 | ||
1512 | /* disallow for drivers not supporting atomic: */ | |
1513 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1514 | return -EINVAL; | |
1515 | ||
1516 | /* disallow for userspace that has not enabled atomic cap (even | |
1517 | * though this may be a bit overkill, since legacy userspace | |
1518 | * wouldn't know how to call this ioctl) | |
1519 | */ | |
1520 | if (!file_priv->atomic) | |
1521 | return -EINVAL; | |
1522 | ||
1523 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
1524 | return -EINVAL; | |
1525 | ||
1526 | if (arg->reserved) | |
1527 | return -EINVAL; | |
1528 | ||
1529 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
1530 | !dev->mode_config.async_page_flip) | |
1531 | return -EINVAL; | |
1532 | ||
1533 | /* can't test and expect an event at the same time. */ | |
1534 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
1535 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1536 | return -EINVAL; | |
1537 | ||
1538 | drm_modeset_acquire_init(&ctx, 0); | |
1539 | ||
1540 | state = drm_atomic_state_alloc(dev); | |
1541 | if (!state) | |
1542 | return -ENOMEM; | |
1543 | ||
1544 | state->acquire_ctx = &ctx; | |
1545 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
1546 | ||
1547 | retry: | |
45723728 | 1548 | plane_mask = 0; |
d34f20d6 RC |
1549 | copied_objs = 0; |
1550 | copied_props = 0; | |
1551 | ||
1552 | for (i = 0; i < arg->count_objs; i++) { | |
1553 | uint32_t obj_id, count_props; | |
1554 | struct drm_mode_object *obj; | |
1555 | ||
1556 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
1557 | ret = -EFAULT; | |
ec9f932e | 1558 | goto out; |
d34f20d6 RC |
1559 | } |
1560 | ||
1561 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
1562 | if (!obj || !obj->properties) { | |
1563 | ret = -ENOENT; | |
ec9f932e | 1564 | goto out; |
d34f20d6 RC |
1565 | } |
1566 | ||
d34f20d6 RC |
1567 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
1568 | ret = -EFAULT; | |
ec9f932e | 1569 | goto out; |
d34f20d6 RC |
1570 | } |
1571 | ||
1572 | copied_objs++; | |
1573 | ||
1574 | for (j = 0; j < count_props; j++) { | |
1575 | uint32_t prop_id; | |
1576 | uint64_t prop_value; | |
1577 | struct drm_property *prop; | |
1578 | ||
1579 | if (get_user(prop_id, props_ptr + copied_props)) { | |
1580 | ret = -EFAULT; | |
ec9f932e | 1581 | goto out; |
d34f20d6 RC |
1582 | } |
1583 | ||
1584 | prop = drm_property_find(dev, prop_id); | |
1585 | if (!prop) { | |
1586 | ret = -ENOENT; | |
ec9f932e | 1587 | goto out; |
d34f20d6 RC |
1588 | } |
1589 | ||
42c5814c GR |
1590 | if (copy_from_user(&prop_value, |
1591 | prop_values_ptr + copied_props, | |
1592 | sizeof(prop_value))) { | |
d34f20d6 | 1593 | ret = -EFAULT; |
ec9f932e | 1594 | goto out; |
d34f20d6 RC |
1595 | } |
1596 | ||
1597 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
1598 | if (ret) | |
ec9f932e | 1599 | goto out; |
d34f20d6 RC |
1600 | |
1601 | copied_props++; | |
1602 | } | |
a9cc54ee | 1603 | |
c4749c9a ML |
1604 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
1605 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
1606 | plane = obj_to_plane(obj); |
1607 | plane_mask |= (1 << drm_plane_index(plane)); | |
1608 | plane->old_fb = plane->fb; | |
1609 | } | |
d34f20d6 RC |
1610 | } |
1611 | ||
1612 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
df63b999 | 1613 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
d34f20d6 RC |
1614 | struct drm_pending_vblank_event *e; |
1615 | ||
d34f20d6 RC |
1616 | e = create_vblank_event(dev, file_priv, arg->user_data); |
1617 | if (!e) { | |
1618 | ret = -ENOMEM; | |
ec9f932e | 1619 | goto out; |
d34f20d6 RC |
1620 | } |
1621 | ||
1622 | crtc_state->event = e; | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
c4749c9a ML |
1627 | /* |
1628 | * Unlike commit, check_only does not clean up state. | |
1629 | * Below we call drm_atomic_state_free for it. | |
1630 | */ | |
d34f20d6 | 1631 | ret = drm_atomic_check_only(state); |
d34f20d6 RC |
1632 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
1633 | ret = drm_atomic_async_commit(state); | |
1634 | } else { | |
1635 | ret = drm_atomic_commit(state); | |
1636 | } | |
1637 | ||
ec9f932e | 1638 | out: |
0f45c26f | 1639 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 1640 | |
c4749c9a ML |
1641 | if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
1642 | /* | |
1643 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive, | |
1644 | * if they weren't, this code should be called on success | |
1645 | * for TEST_ONLY too. | |
1646 | */ | |
1647 | ||
1648 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1649 | if (!crtc_state->event) | |
1650 | continue; | |
1651 | ||
1652 | destroy_vblank_event(dev, file_priv, | |
1653 | crtc_state->event); | |
1654 | } | |
1655 | } | |
1656 | ||
ec9f932e ML |
1657 | if (ret == -EDEADLK) { |
1658 | drm_atomic_state_clear(state); | |
1659 | drm_modeset_backoff(&ctx); | |
1660 | goto retry; | |
1661 | } | |
d34f20d6 | 1662 | |
c4749c9a | 1663 | if (ret || arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) |
ec9f932e | 1664 | drm_atomic_state_free(state); |
d34f20d6 RC |
1665 | |
1666 | drm_modeset_drop_locks(&ctx); | |
1667 | drm_modeset_acquire_fini(&ctx); | |
1668 | ||
1669 | return ret; | |
d34f20d6 | 1670 | } |