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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 | ||
cc4ceb48 DV |
68 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
69 | sizeof(*state->crtcs), GFP_KERNEL); | |
70 | if (!state->crtcs) | |
71 | goto fail; | |
72 | state->crtc_states = kcalloc(dev->mode_config.num_crtc, | |
73 | sizeof(*state->crtc_states), GFP_KERNEL); | |
74 | if (!state->crtc_states) | |
75 | goto fail; | |
76 | state->planes = kcalloc(dev->mode_config.num_total_plane, | |
77 | sizeof(*state->planes), GFP_KERNEL); | |
78 | if (!state->planes) | |
79 | goto fail; | |
80 | state->plane_states = kcalloc(dev->mode_config.num_total_plane, | |
81 | sizeof(*state->plane_states), GFP_KERNEL); | |
82 | if (!state->plane_states) | |
83 | goto fail; | |
cc4ceb48 DV |
84 | |
85 | state->dev = dev; | |
86 | ||
036ef573 | 87 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 88 | |
036ef573 | 89 | return 0; |
cc4ceb48 | 90 | fail: |
036ef573 ML |
91 | drm_atomic_state_default_release(state); |
92 | return -ENOMEM; | |
93 | } | |
94 | EXPORT_SYMBOL(drm_atomic_state_init); | |
95 | ||
96 | /** | |
97 | * drm_atomic_state_alloc - allocate atomic state | |
98 | * @dev: DRM device | |
99 | * | |
100 | * This allocates an empty atomic state to track updates. | |
101 | */ | |
102 | struct drm_atomic_state * | |
103 | drm_atomic_state_alloc(struct drm_device *dev) | |
104 | { | |
105 | struct drm_mode_config *config = &dev->mode_config; | |
106 | struct drm_atomic_state *state; | |
107 | ||
108 | if (!config->funcs->atomic_state_alloc) { | |
109 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
110 | if (!state) | |
111 | return NULL; | |
112 | if (drm_atomic_state_init(dev, state) < 0) { | |
113 | kfree(state); | |
114 | return NULL; | |
115 | } | |
116 | return state; | |
117 | } | |
cc4ceb48 | 118 | |
036ef573 | 119 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
120 | } |
121 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
122 | ||
123 | /** | |
036ef573 | 124 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
125 | * @state: atomic state |
126 | * | |
036ef573 ML |
127 | * Default implementation for clearing atomic state. |
128 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 129 | */ |
036ef573 | 130 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
131 | { |
132 | struct drm_device *dev = state->dev; | |
6f75cea6 | 133 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
134 | int i; |
135 | ||
17a38d9c | 136 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 137 | |
f52b69f1 | 138 | for (i = 0; i < state->num_connector; i++) { |
cc4ceb48 DV |
139 | struct drm_connector *connector = state->connectors[i]; |
140 | ||
141 | if (!connector) | |
142 | continue; | |
143 | ||
460e8e2c DV |
144 | /* |
145 | * FIXME: Async commits can race with connector unplugging and | |
146 | * there's currently nothing that prevents cleanup up state for | |
147 | * deleted connectors. As long as the callback doesn't look at | |
148 | * the connector we'll be fine though, so make sure that's the | |
149 | * case by setting all connector pointers to NULL. | |
150 | */ | |
151 | state->connector_states[i]->connector = NULL; | |
152 | connector->funcs->atomic_destroy_state(NULL, | |
cc4ceb48 | 153 | state->connector_states[i]); |
8a5c0bde | 154 | state->connectors[i] = NULL; |
9469244d | 155 | state->connector_states[i] = NULL; |
cc4ceb48 DV |
156 | } |
157 | ||
6f75cea6 | 158 | for (i = 0; i < config->num_crtc; i++) { |
cc4ceb48 DV |
159 | struct drm_crtc *crtc = state->crtcs[i]; |
160 | ||
161 | if (!crtc) | |
162 | continue; | |
163 | ||
164 | crtc->funcs->atomic_destroy_state(crtc, | |
165 | state->crtc_states[i]); | |
8a5c0bde | 166 | state->crtcs[i] = NULL; |
9469244d | 167 | state->crtc_states[i] = NULL; |
cc4ceb48 DV |
168 | } |
169 | ||
6f75cea6 | 170 | for (i = 0; i < config->num_total_plane; i++) { |
cc4ceb48 DV |
171 | struct drm_plane *plane = state->planes[i]; |
172 | ||
173 | if (!plane) | |
174 | continue; | |
175 | ||
176 | plane->funcs->atomic_destroy_state(plane, | |
177 | state->plane_states[i]); | |
8a5c0bde | 178 | state->planes[i] = NULL; |
9469244d | 179 | state->plane_states[i] = NULL; |
cc4ceb48 DV |
180 | } |
181 | } | |
036ef573 ML |
182 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
183 | ||
184 | /** | |
185 | * drm_atomic_state_clear - clear state object | |
186 | * @state: atomic state | |
187 | * | |
188 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
189 | * all locks. So someone else could sneak in and change the current modeset | |
190 | * configuration. Which means that all the state assembled in @state is no | |
191 | * longer an atomic update to the current state, but to some arbitrary earlier | |
192 | * state. Which could break assumptions the driver's ->atomic_check likely | |
193 | * relies on. | |
194 | * | |
195 | * Hence we must clear all cached state and completely start over, using this | |
196 | * function. | |
197 | */ | |
198 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
199 | { | |
200 | struct drm_device *dev = state->dev; | |
201 | struct drm_mode_config *config = &dev->mode_config; | |
202 | ||
203 | if (config->funcs->atomic_state_clear) | |
204 | config->funcs->atomic_state_clear(state); | |
205 | else | |
206 | drm_atomic_state_default_clear(state); | |
207 | } | |
cc4ceb48 DV |
208 | EXPORT_SYMBOL(drm_atomic_state_clear); |
209 | ||
210 | /** | |
211 | * drm_atomic_state_free - free all memory for an atomic state | |
212 | * @state: atomic state to deallocate | |
213 | * | |
214 | * This frees all memory associated with an atomic state, including all the | |
215 | * per-object state for planes, crtcs and connectors. | |
216 | */ | |
217 | void drm_atomic_state_free(struct drm_atomic_state *state) | |
218 | { | |
036ef573 ML |
219 | struct drm_device *dev; |
220 | struct drm_mode_config *config; | |
221 | ||
a0211bb4 ACO |
222 | if (!state) |
223 | return; | |
224 | ||
036ef573 ML |
225 | dev = state->dev; |
226 | config = &dev->mode_config; | |
227 | ||
cc4ceb48 DV |
228 | drm_atomic_state_clear(state); |
229 | ||
17a38d9c | 230 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 231 | |
036ef573 ML |
232 | if (config->funcs->atomic_state_free) { |
233 | config->funcs->atomic_state_free(state); | |
234 | } else { | |
235 | drm_atomic_state_default_release(state); | |
236 | kfree(state); | |
237 | } | |
cc4ceb48 DV |
238 | } |
239 | EXPORT_SYMBOL(drm_atomic_state_free); | |
240 | ||
241 | /** | |
242 | * drm_atomic_get_crtc_state - get crtc state | |
243 | * @state: global atomic state object | |
244 | * @crtc: crtc to get state object for | |
245 | * | |
246 | * This function returns the crtc state for the given crtc, allocating it if | |
247 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
248 | * is consistent. | |
249 | * | |
250 | * Returns: | |
251 | * | |
252 | * Either the allocated state or the error code encoded into the pointer. When | |
253 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
254 | * entire atomic sequence must be restarted. All other errors are fatal. | |
255 | */ | |
256 | struct drm_crtc_state * | |
257 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
258 | struct drm_crtc *crtc) | |
259 | { | |
1b26a5e1 | 260 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
261 | struct drm_crtc_state *crtc_state; |
262 | ||
1b26a5e1 ML |
263 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
264 | if (crtc_state) | |
265 | return crtc_state; | |
cc4ceb48 DV |
266 | |
267 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
268 | if (ret) | |
269 | return ERR_PTR(ret); | |
270 | ||
271 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
272 | if (!crtc_state) | |
273 | return ERR_PTR(-ENOMEM); | |
274 | ||
275 | state->crtc_states[index] = crtc_state; | |
276 | state->crtcs[index] = crtc; | |
277 | crtc_state->state = state; | |
278 | ||
fa3ab4c2 VS |
279 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
280 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
281 | |
282 | return crtc_state; | |
283 | } | |
284 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
285 | ||
819364da DS |
286 | /** |
287 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
288 | * @state: the CRTC whose incoming state to update | |
289 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
290 | * | |
291 | * Set a mode (originating from the kernel) on the desired CRTC state. Does | |
292 | * not change any other state properties, including enable, active, or | |
293 | * mode_changed. | |
294 | * | |
295 | * RETURNS: | |
296 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
297 | */ | |
298 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
299 | struct drm_display_mode *mode) | |
300 | { | |
99cf4a29 DS |
301 | struct drm_mode_modeinfo umode; |
302 | ||
819364da DS |
303 | /* Early return for no change. */ |
304 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
305 | return 0; | |
306 | ||
5f911905 | 307 | drm_property_unreference_blob(state->mode_blob); |
99cf4a29 DS |
308 | state->mode_blob = NULL; |
309 | ||
819364da | 310 | if (mode) { |
99cf4a29 DS |
311 | drm_mode_convert_to_umode(&umode, mode); |
312 | state->mode_blob = | |
313 | drm_property_create_blob(state->crtc->dev, | |
314 | sizeof(umode), | |
315 | &umode); | |
316 | if (IS_ERR(state->mode_blob)) | |
317 | return PTR_ERR(state->mode_blob); | |
318 | ||
819364da DS |
319 | drm_mode_copy(&state->mode, mode); |
320 | state->enable = true; | |
321 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
322 | mode->name, state); | |
323 | } else { | |
324 | memset(&state->mode, 0, sizeof(state->mode)); | |
325 | state->enable = false; | |
326 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
327 | state); | |
328 | } | |
329 | ||
330 | return 0; | |
331 | } | |
332 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
333 | ||
955f3c33 DS |
334 | /** |
335 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
336 | * @state: the CRTC whose incoming state to update | |
337 | * @blob: pointer to blob property to use for mode | |
338 | * | |
339 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
340 | * This function will take a reference on the blob property for the CRTC state, | |
341 | * and release the reference held on the state's existing mode property, if any | |
342 | * was set. | |
343 | * | |
344 | * RETURNS: | |
345 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
346 | */ | |
347 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
348 | struct drm_property_blob *blob) | |
349 | { | |
350 | if (blob == state->mode_blob) | |
351 | return 0; | |
352 | ||
5f911905 | 353 | drm_property_unreference_blob(state->mode_blob); |
955f3c33 DS |
354 | state->mode_blob = NULL; |
355 | ||
356 | if (blob) { | |
357 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
358 | drm_mode_convert_umode(&state->mode, | |
359 | (const struct drm_mode_modeinfo *) | |
360 | blob->data)) | |
361 | return -EINVAL; | |
362 | ||
363 | state->mode_blob = drm_property_reference_blob(blob); | |
364 | state->enable = true; | |
365 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
366 | state->mode.name, state); | |
367 | } else { | |
368 | memset(&state->mode, 0, sizeof(state->mode)); | |
369 | state->enable = false; | |
370 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
371 | state); | |
372 | } | |
373 | ||
374 | return 0; | |
375 | } | |
376 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
377 | ||
40ecc694 RC |
378 | /** |
379 | * drm_atomic_crtc_set_property - set property on CRTC | |
380 | * @crtc: the drm CRTC to set a property on | |
381 | * @state: the state object to update with the new property value | |
382 | * @property: the property to set | |
383 | * @val: the new property value | |
384 | * | |
385 | * Use this instead of calling crtc->atomic_set_property directly. | |
386 | * This function handles generic/core properties and calls out to | |
387 | * driver's ->atomic_set_property() for driver properties. To ensure | |
388 | * consistent behavior you must call this function rather than the | |
389 | * driver hook directly. | |
390 | * | |
391 | * RETURNS: | |
392 | * Zero on success, error code on failure | |
393 | */ | |
394 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
395 | struct drm_crtc_state *state, struct drm_property *property, | |
396 | uint64_t val) | |
397 | { | |
eab3bbef DV |
398 | struct drm_device *dev = crtc->dev; |
399 | struct drm_mode_config *config = &dev->mode_config; | |
955f3c33 | 400 | int ret; |
eab3bbef | 401 | |
27798365 | 402 | if (property == config->prop_active) |
eab3bbef | 403 | state->active = val; |
955f3c33 DS |
404 | else if (property == config->prop_mode_id) { |
405 | struct drm_property_blob *mode = | |
406 | drm_property_lookup_blob(dev, val); | |
407 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
5f911905 | 408 | drm_property_unreference_blob(mode); |
955f3c33 DS |
409 | return ret; |
410 | } | |
27798365 | 411 | else if (crtc->funcs->atomic_set_property) |
40ecc694 | 412 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
413 | else |
414 | return -EINVAL; | |
415 | ||
416 | return 0; | |
40ecc694 RC |
417 | } |
418 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
419 | ||
c0714fc9 DV |
420 | /** |
421 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
422 | * @crtc: the drm CRTC to set a property on | |
423 | * @state: the state object to get the property value from | |
424 | * @property: the property to set | |
425 | * @val: return location for the property value | |
426 | * | |
ac9c9256 RC |
427 | * This function handles generic/core properties and calls out to |
428 | * driver's ->atomic_get_property() for driver properties. To ensure | |
429 | * consistent behavior you must call this function rather than the | |
430 | * driver hook directly. | |
c0714fc9 DV |
431 | * |
432 | * RETURNS: | |
433 | * Zero on success, error code on failure | |
ac9c9256 | 434 | */ |
bf22f3be GT |
435 | static int |
436 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
437 | const struct drm_crtc_state *state, |
438 | struct drm_property *property, uint64_t *val) | |
439 | { | |
8f164ce4 DS |
440 | struct drm_device *dev = crtc->dev; |
441 | struct drm_mode_config *config = &dev->mode_config; | |
442 | ||
443 | if (property == config->prop_active) | |
444 | *val = state->active; | |
955f3c33 DS |
445 | else if (property == config->prop_mode_id) |
446 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
8f164ce4 | 447 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 448 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
449 | else |
450 | return -EINVAL; | |
451 | ||
452 | return 0; | |
ac9c9256 | 453 | } |
ac9c9256 | 454 | |
5e743737 RC |
455 | /** |
456 | * drm_atomic_crtc_check - check crtc state | |
457 | * @crtc: crtc to check | |
458 | * @state: crtc state to check | |
459 | * | |
460 | * Provides core sanity checks for crtc state. | |
461 | * | |
462 | * RETURNS: | |
463 | * Zero on success, error code on failure | |
464 | */ | |
465 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
466 | struct drm_crtc_state *state) | |
467 | { | |
468 | /* NOTE: we explicitly don't enforce constraints such as primary | |
469 | * layer covering entire screen, since that is something we want | |
470 | * to allow (on hw that supports it). For hw that does not, it | |
471 | * should be checked in driver's crtc->atomic_check() vfunc. | |
472 | * | |
473 | * TODO: Add generic modeset state checks once we support those. | |
474 | */ | |
eab3bbef DV |
475 | |
476 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
477 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
478 | crtc->base.id, crtc->name); | |
eab3bbef DV |
479 | return -EINVAL; |
480 | } | |
481 | ||
99cf4a29 DS |
482 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
483 | * as this is a kernel-internal detail that userspace should never | |
484 | * be able to trigger. */ | |
485 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
486 | WARN_ON(state->enable && !state->mode_blob)) { | |
fa3ab4c2 VS |
487 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
488 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
489 | return -EINVAL; |
490 | } | |
491 | ||
492 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
493 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
494 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
495 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
496 | return -EINVAL; |
497 | } | |
498 | ||
4cba6850 DV |
499 | /* |
500 | * Reject event generation for when a CRTC is off and stays off. | |
501 | * It wouldn't be hard to implement this, but userspace has a track | |
502 | * record of happily burning through 100% cpu (or worse, crash) when the | |
503 | * display pipe is suspended. To avoid all that fun just reject updates | |
504 | * that ask for events since likely that indicates a bug in the | |
505 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
506 | * and legacy page_flip IOCTL which also reject service on a disabled | |
507 | * pipe. | |
508 | */ | |
509 | if (state->event && !state->active && !crtc->state->active) { | |
510 | DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n", | |
511 | crtc->base.id); | |
512 | return -EINVAL; | |
513 | } | |
514 | ||
5e743737 RC |
515 | return 0; |
516 | } | |
517 | ||
cc4ceb48 DV |
518 | /** |
519 | * drm_atomic_get_plane_state - get plane state | |
520 | * @state: global atomic state object | |
521 | * @plane: plane to get state object for | |
522 | * | |
523 | * This function returns the plane state for the given plane, allocating it if | |
524 | * needed. It will also grab the relevant plane lock to make sure that the state | |
525 | * is consistent. | |
526 | * | |
527 | * Returns: | |
528 | * | |
529 | * Either the allocated state or the error code encoded into the pointer. When | |
530 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
531 | * entire atomic sequence must be restarted. All other errors are fatal. | |
532 | */ | |
533 | struct drm_plane_state * | |
534 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
535 | struct drm_plane *plane) | |
536 | { | |
1b26a5e1 | 537 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
538 | struct drm_plane_state *plane_state; |
539 | ||
1b26a5e1 ML |
540 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
541 | if (plane_state) | |
542 | return plane_state; | |
cc4ceb48 | 543 | |
4d02e2de | 544 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
545 | if (ret) |
546 | return ERR_PTR(ret); | |
547 | ||
548 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
549 | if (!plane_state) | |
550 | return ERR_PTR(-ENOMEM); | |
551 | ||
552 | state->plane_states[index] = plane_state; | |
553 | state->planes[index] = plane; | |
554 | plane_state->state = state; | |
555 | ||
9f4c97a2 VS |
556 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
557 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
558 | |
559 | if (plane_state->crtc) { | |
560 | struct drm_crtc_state *crtc_state; | |
561 | ||
562 | crtc_state = drm_atomic_get_crtc_state(state, | |
563 | plane_state->crtc); | |
564 | if (IS_ERR(crtc_state)) | |
565 | return ERR_CAST(crtc_state); | |
566 | } | |
567 | ||
568 | return plane_state; | |
569 | } | |
570 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
571 | ||
40ecc694 RC |
572 | /** |
573 | * drm_atomic_plane_set_property - set property on plane | |
574 | * @plane: the drm plane to set a property on | |
575 | * @state: the state object to update with the new property value | |
576 | * @property: the property to set | |
577 | * @val: the new property value | |
578 | * | |
579 | * Use this instead of calling plane->atomic_set_property directly. | |
580 | * This function handles generic/core properties and calls out to | |
581 | * driver's ->atomic_set_property() for driver properties. To ensure | |
582 | * consistent behavior you must call this function rather than the | |
583 | * driver hook directly. | |
584 | * | |
585 | * RETURNS: | |
586 | * Zero on success, error code on failure | |
587 | */ | |
588 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
589 | struct drm_plane_state *state, struct drm_property *property, | |
590 | uint64_t val) | |
591 | { | |
6b4959f4 RC |
592 | struct drm_device *dev = plane->dev; |
593 | struct drm_mode_config *config = &dev->mode_config; | |
594 | ||
595 | if (property == config->prop_fb_id) { | |
596 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
597 | drm_atomic_set_fb_for_plane(state, fb); | |
598 | if (fb) | |
599 | drm_framebuffer_unreference(fb); | |
600 | } else if (property == config->prop_crtc_id) { | |
601 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
602 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
603 | } else if (property == config->prop_crtc_x) { | |
604 | state->crtc_x = U642I64(val); | |
605 | } else if (property == config->prop_crtc_y) { | |
606 | state->crtc_y = U642I64(val); | |
607 | } else if (property == config->prop_crtc_w) { | |
608 | state->crtc_w = val; | |
609 | } else if (property == config->prop_crtc_h) { | |
610 | state->crtc_h = val; | |
611 | } else if (property == config->prop_src_x) { | |
612 | state->src_x = val; | |
613 | } else if (property == config->prop_src_y) { | |
614 | state->src_y = val; | |
615 | } else if (property == config->prop_src_w) { | |
616 | state->src_w = val; | |
617 | } else if (property == config->prop_src_h) { | |
618 | state->src_h = val; | |
1da30627 MR |
619 | } else if (property == config->rotation_property) { |
620 | state->rotation = val; | |
6b4959f4 RC |
621 | } else if (plane->funcs->atomic_set_property) { |
622 | return plane->funcs->atomic_set_property(plane, state, | |
623 | property, val); | |
624 | } else { | |
625 | return -EINVAL; | |
626 | } | |
627 | ||
628 | return 0; | |
40ecc694 RC |
629 | } |
630 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
631 | ||
c0714fc9 DV |
632 | /** |
633 | * drm_atomic_plane_get_property - get property value from plane state | |
634 | * @plane: the drm plane to set a property on | |
635 | * @state: the state object to get the property value from | |
636 | * @property: the property to set | |
637 | * @val: return location for the property value | |
638 | * | |
ac9c9256 RC |
639 | * This function handles generic/core properties and calls out to |
640 | * driver's ->atomic_get_property() for driver properties. To ensure | |
641 | * consistent behavior you must call this function rather than the | |
642 | * driver hook directly. | |
c0714fc9 DV |
643 | * |
644 | * RETURNS: | |
645 | * Zero on success, error code on failure | |
ac9c9256 | 646 | */ |
a97df1cc DV |
647 | static int |
648 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
649 | const struct drm_plane_state *state, |
650 | struct drm_property *property, uint64_t *val) | |
651 | { | |
6b4959f4 RC |
652 | struct drm_device *dev = plane->dev; |
653 | struct drm_mode_config *config = &dev->mode_config; | |
654 | ||
655 | if (property == config->prop_fb_id) { | |
656 | *val = (state->fb) ? state->fb->base.id : 0; | |
657 | } else if (property == config->prop_crtc_id) { | |
658 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
659 | } else if (property == config->prop_crtc_x) { | |
660 | *val = I642U64(state->crtc_x); | |
661 | } else if (property == config->prop_crtc_y) { | |
662 | *val = I642U64(state->crtc_y); | |
663 | } else if (property == config->prop_crtc_w) { | |
664 | *val = state->crtc_w; | |
665 | } else if (property == config->prop_crtc_h) { | |
666 | *val = state->crtc_h; | |
667 | } else if (property == config->prop_src_x) { | |
668 | *val = state->src_x; | |
669 | } else if (property == config->prop_src_y) { | |
670 | *val = state->src_y; | |
671 | } else if (property == config->prop_src_w) { | |
672 | *val = state->src_w; | |
673 | } else if (property == config->prop_src_h) { | |
674 | *val = state->src_h; | |
4cda09ca TU |
675 | } else if (property == config->rotation_property) { |
676 | *val = state->rotation; | |
6b4959f4 | 677 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 678 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
679 | } else { |
680 | return -EINVAL; | |
681 | } | |
682 | ||
683 | return 0; | |
ac9c9256 | 684 | } |
ac9c9256 | 685 | |
f8aeb41c DV |
686 | static bool |
687 | plane_switching_crtc(struct drm_atomic_state *state, | |
688 | struct drm_plane *plane, | |
689 | struct drm_plane_state *plane_state) | |
690 | { | |
691 | if (!plane->state->crtc || !plane_state->crtc) | |
692 | return false; | |
693 | ||
694 | if (plane->state->crtc == plane_state->crtc) | |
695 | return false; | |
696 | ||
697 | /* This could be refined, but currently there's no helper or driver code | |
698 | * to implement direct switching of active planes nor userspace to take | |
699 | * advantage of more direct plane switching without the intermediate | |
700 | * full OFF state. | |
701 | */ | |
702 | return true; | |
703 | } | |
704 | ||
5e743737 RC |
705 | /** |
706 | * drm_atomic_plane_check - check plane state | |
707 | * @plane: plane to check | |
708 | * @state: plane state to check | |
709 | * | |
710 | * Provides core sanity checks for plane state. | |
711 | * | |
712 | * RETURNS: | |
713 | * Zero on success, error code on failure | |
714 | */ | |
715 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
716 | struct drm_plane_state *state) | |
717 | { | |
718 | unsigned int fb_width, fb_height; | |
ead8610d | 719 | int ret; |
5e743737 RC |
720 | |
721 | /* either *both* CRTC and FB must be set, or neither */ | |
722 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 723 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
724 | return -EINVAL; |
725 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 726 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
727 | return -EINVAL; |
728 | } | |
729 | ||
730 | /* if disabled, we don't care about the rest of the state: */ | |
731 | if (!state->crtc) | |
732 | return 0; | |
733 | ||
734 | /* Check whether this plane is usable on this CRTC */ | |
735 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 736 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
737 | return -EINVAL; |
738 | } | |
739 | ||
740 | /* Check whether this plane supports the fb pixel format. */ | |
ead8610d LP |
741 | ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format); |
742 | if (ret) { | |
17a38d9c DV |
743 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", |
744 | drm_get_format_name(state->fb->pixel_format)); | |
ead8610d | 745 | return ret; |
5e743737 RC |
746 | } |
747 | ||
748 | /* Give drivers some help against integer overflows */ | |
749 | if (state->crtc_w > INT_MAX || | |
750 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
751 | state->crtc_h > INT_MAX || | |
752 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
753 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
754 | state->crtc_w, state->crtc_h, | |
755 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
756 | return -ERANGE; |
757 | } | |
758 | ||
759 | fb_width = state->fb->width << 16; | |
760 | fb_height = state->fb->height << 16; | |
761 | ||
762 | /* Make sure source coordinates are inside the fb. */ | |
763 | if (state->src_w > fb_width || | |
764 | state->src_x > fb_width - state->src_w || | |
765 | state->src_h > fb_height || | |
766 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
767 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
768 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
769 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
770 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
771 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
772 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
773 | return -ENOSPC; |
774 | } | |
775 | ||
f8aeb41c | 776 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
777 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
778 | plane->base.id, plane->name); | |
f8aeb41c DV |
779 | return -EINVAL; |
780 | } | |
781 | ||
5e743737 RC |
782 | return 0; |
783 | } | |
784 | ||
cc4ceb48 DV |
785 | /** |
786 | * drm_atomic_get_connector_state - get connector state | |
787 | * @state: global atomic state object | |
788 | * @connector: connector to get state object for | |
789 | * | |
790 | * This function returns the connector state for the given connector, | |
791 | * allocating it if needed. It will also grab the relevant connector lock to | |
792 | * make sure that the state is consistent. | |
793 | * | |
794 | * Returns: | |
795 | * | |
796 | * Either the allocated state or the error code encoded into the pointer. When | |
797 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
798 | * entire atomic sequence must be restarted. All other errors are fatal. | |
799 | */ | |
800 | struct drm_connector_state * | |
801 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
802 | struct drm_connector *connector) | |
803 | { | |
804 | int ret, index; | |
805 | struct drm_mode_config *config = &connector->dev->mode_config; | |
806 | struct drm_connector_state *connector_state; | |
807 | ||
c7eb76f4 DV |
808 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
809 | if (ret) | |
810 | return ERR_PTR(ret); | |
811 | ||
cc4ceb48 DV |
812 | index = drm_connector_index(connector); |
813 | ||
f52b69f1 | 814 | if (index >= state->num_connector) { |
5fff80bb ML |
815 | struct drm_connector **c; |
816 | struct drm_connector_state **cs; | |
817 | int alloc = max(index + 1, config->num_connector); | |
818 | ||
819 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
820 | if (!c) | |
821 | return ERR_PTR(-ENOMEM); | |
822 | ||
823 | state->connectors = c; | |
824 | memset(&state->connectors[state->num_connector], 0, | |
825 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
826 | ||
827 | cs = krealloc(state->connector_states, alloc * sizeof(*state->connector_states), GFP_KERNEL); | |
828 | if (!cs) | |
829 | return ERR_PTR(-ENOMEM); | |
830 | ||
831 | state->connector_states = cs; | |
832 | memset(&state->connector_states[state->num_connector], 0, | |
833 | sizeof(*state->connector_states) * (alloc - state->num_connector)); | |
834 | state->num_connector = alloc; | |
f52b69f1 DV |
835 | } |
836 | ||
cc4ceb48 DV |
837 | if (state->connector_states[index]) |
838 | return state->connector_states[index]; | |
839 | ||
cc4ceb48 DV |
840 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
841 | if (!connector_state) | |
842 | return ERR_PTR(-ENOMEM); | |
843 | ||
844 | state->connector_states[index] = connector_state; | |
845 | state->connectors[index] = connector; | |
846 | connector_state->state = state; | |
847 | ||
17a38d9c DV |
848 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", |
849 | connector->base.id, connector_state, state); | |
cc4ceb48 DV |
850 | |
851 | if (connector_state->crtc) { | |
852 | struct drm_crtc_state *crtc_state; | |
853 | ||
854 | crtc_state = drm_atomic_get_crtc_state(state, | |
855 | connector_state->crtc); | |
856 | if (IS_ERR(crtc_state)) | |
857 | return ERR_CAST(crtc_state); | |
858 | } | |
859 | ||
860 | return connector_state; | |
861 | } | |
862 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
863 | ||
40ecc694 RC |
864 | /** |
865 | * drm_atomic_connector_set_property - set property on connector. | |
866 | * @connector: the drm connector to set a property on | |
867 | * @state: the state object to update with the new property value | |
868 | * @property: the property to set | |
869 | * @val: the new property value | |
870 | * | |
871 | * Use this instead of calling connector->atomic_set_property directly. | |
872 | * This function handles generic/core properties and calls out to | |
873 | * driver's ->atomic_set_property() for driver properties. To ensure | |
874 | * consistent behavior you must call this function rather than the | |
875 | * driver hook directly. | |
876 | * | |
877 | * RETURNS: | |
878 | * Zero on success, error code on failure | |
879 | */ | |
880 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
881 | struct drm_connector_state *state, struct drm_property *property, | |
882 | uint64_t val) | |
883 | { | |
884 | struct drm_device *dev = connector->dev; | |
885 | struct drm_mode_config *config = &dev->mode_config; | |
886 | ||
ae16c597 RC |
887 | if (property == config->prop_crtc_id) { |
888 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
889 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
890 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
891 | /* setting DPMS property requires special handling, which |
892 | * is done in legacy setprop path for us. Disallow (for | |
893 | * now?) atomic writes to DPMS property: | |
894 | */ | |
895 | return -EINVAL; | |
896 | } else if (connector->funcs->atomic_set_property) { | |
897 | return connector->funcs->atomic_set_property(connector, | |
898 | state, property, val); | |
899 | } else { | |
900 | return -EINVAL; | |
901 | } | |
902 | } | |
903 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
904 | ||
c0714fc9 DV |
905 | /** |
906 | * drm_atomic_connector_get_property - get property value from connector state | |
907 | * @connector: the drm connector to set a property on | |
908 | * @state: the state object to get the property value from | |
909 | * @property: the property to set | |
910 | * @val: return location for the property value | |
911 | * | |
ac9c9256 RC |
912 | * This function handles generic/core properties and calls out to |
913 | * driver's ->atomic_get_property() for driver properties. To ensure | |
914 | * consistent behavior you must call this function rather than the | |
915 | * driver hook directly. | |
c0714fc9 DV |
916 | * |
917 | * RETURNS: | |
918 | * Zero on success, error code on failure | |
ac9c9256 | 919 | */ |
a97df1cc DV |
920 | static int |
921 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
922 | const struct drm_connector_state *state, |
923 | struct drm_property *property, uint64_t *val) | |
924 | { | |
925 | struct drm_device *dev = connector->dev; | |
926 | struct drm_mode_config *config = &dev->mode_config; | |
927 | ||
ae16c597 RC |
928 | if (property == config->prop_crtc_id) { |
929 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
930 | } else if (property == config->dpms_property) { | |
ac9c9256 RC |
931 | *val = connector->dpms; |
932 | } else if (connector->funcs->atomic_get_property) { | |
933 | return connector->funcs->atomic_get_property(connector, | |
934 | state, property, val); | |
935 | } else { | |
936 | return -EINVAL; | |
937 | } | |
938 | ||
939 | return 0; | |
940 | } | |
ac9c9256 | 941 | |
88a48e29 RC |
942 | int drm_atomic_get_property(struct drm_mode_object *obj, |
943 | struct drm_property *property, uint64_t *val) | |
944 | { | |
945 | struct drm_device *dev = property->dev; | |
946 | int ret; | |
947 | ||
948 | switch (obj->type) { | |
949 | case DRM_MODE_OBJECT_CONNECTOR: { | |
950 | struct drm_connector *connector = obj_to_connector(obj); | |
951 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
952 | ret = drm_atomic_connector_get_property(connector, | |
953 | connector->state, property, val); | |
954 | break; | |
955 | } | |
956 | case DRM_MODE_OBJECT_CRTC: { | |
957 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
958 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
959 | ret = drm_atomic_crtc_get_property(crtc, | |
960 | crtc->state, property, val); | |
961 | break; | |
962 | } | |
963 | case DRM_MODE_OBJECT_PLANE: { | |
964 | struct drm_plane *plane = obj_to_plane(obj); | |
965 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
966 | ret = drm_atomic_plane_get_property(plane, | |
967 | plane->state, property, val); | |
968 | break; | |
969 | } | |
970 | default: | |
971 | ret = -EINVAL; | |
972 | break; | |
973 | } | |
974 | ||
975 | return ret; | |
976 | } | |
977 | ||
cc4ceb48 DV |
978 | /** |
979 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 980 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
981 | * @crtc: crtc to use for the plane |
982 | * | |
983 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
984 | * for the new crtc, as needed. This function takes care of all these details | |
985 | * besides updating the pointer in the state object itself. | |
986 | * | |
987 | * Returns: | |
988 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
989 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
990 | * sequence must be restarted. All other errors are fatal. | |
991 | */ | |
992 | int | |
07cc0ef6 DV |
993 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
994 | struct drm_crtc *crtc) | |
cc4ceb48 | 995 | { |
07cc0ef6 | 996 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
997 | struct drm_crtc_state *crtc_state; |
998 | ||
6ddd388a RC |
999 | if (plane_state->crtc) { |
1000 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1001 | plane_state->crtc); | |
1002 | if (WARN_ON(IS_ERR(crtc_state))) | |
1003 | return PTR_ERR(crtc_state); | |
1004 | ||
1005 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1006 | } | |
1007 | ||
1008 | plane_state->crtc = crtc; | |
1009 | ||
cc4ceb48 DV |
1010 | if (crtc) { |
1011 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1012 | crtc); | |
1013 | if (IS_ERR(crtc_state)) | |
1014 | return PTR_ERR(crtc_state); | |
6ddd388a | 1015 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1016 | } |
1017 | ||
cc4ceb48 | 1018 | if (crtc) |
fa3ab4c2 VS |
1019 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1020 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1021 | else |
17a38d9c DV |
1022 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1023 | plane_state); | |
cc4ceb48 DV |
1024 | |
1025 | return 0; | |
1026 | } | |
1027 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1028 | ||
321ebf04 | 1029 | /** |
16d78bc2 | 1030 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1031 | * @plane_state: atomic state object for the plane |
1032 | * @fb: fb to use for the plane | |
1033 | * | |
1034 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1035 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1036 | * function takes care of all these details besides updating the pointer in the | |
1037 | * state object itself. | |
1038 | */ | |
1039 | void | |
1040 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1041 | struct drm_framebuffer *fb) | |
1042 | { | |
1043 | if (plane_state->fb) | |
1044 | drm_framebuffer_unreference(plane_state->fb); | |
1045 | if (fb) | |
1046 | drm_framebuffer_reference(fb); | |
1047 | plane_state->fb = fb; | |
1048 | ||
1049 | if (fb) | |
17a38d9c DV |
1050 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1051 | fb->base.id, plane_state); | |
321ebf04 | 1052 | else |
17a38d9c DV |
1053 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1054 | plane_state); | |
321ebf04 DV |
1055 | } |
1056 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1057 | ||
cc4ceb48 DV |
1058 | /** |
1059 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1060 | * @conn_state: atomic state object for the connector | |
1061 | * @crtc: crtc to use for the connector | |
1062 | * | |
1063 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1064 | * state for the new crtc, as needed. This function takes care of all these | |
1065 | * details besides updating the pointer in the state object itself. | |
1066 | * | |
1067 | * Returns: | |
1068 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1069 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1070 | * sequence must be restarted. All other errors are fatal. | |
1071 | */ | |
1072 | int | |
1073 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1074 | struct drm_crtc *crtc) | |
1075 | { | |
1076 | struct drm_crtc_state *crtc_state; | |
1077 | ||
4cd9fa52 ML |
1078 | if (conn_state->crtc && conn_state->crtc != crtc) { |
1079 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, | |
1080 | conn_state->crtc); | |
1081 | ||
1082 | crtc_state->connector_mask &= | |
1083 | ~(1 << drm_connector_index(conn_state->connector)); | |
1084 | } | |
1085 | ||
cc4ceb48 DV |
1086 | if (crtc) { |
1087 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1088 | if (IS_ERR(crtc_state)) | |
1089 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1090 | |
1091 | crtc_state->connector_mask |= | |
1092 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 DV |
1093 | } |
1094 | ||
1095 | conn_state->crtc = crtc; | |
1096 | ||
1097 | if (crtc) | |
fa3ab4c2 VS |
1098 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1099 | conn_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1100 | else |
17a38d9c DV |
1101 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1102 | conn_state); | |
cc4ceb48 DV |
1103 | |
1104 | return 0; | |
1105 | } | |
1106 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1107 | ||
1108 | /** | |
1109 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1110 | * @state: atomic state | |
1111 | * @crtc: DRM crtc | |
1112 | * | |
1113 | * This function walks the current configuration and adds all connectors | |
1114 | * currently using @crtc to the atomic configuration @state. Note that this | |
1115 | * function must acquire the connection mutex. This can potentially cause | |
1116 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1117 | * drivers and helpers should only call this when really needed (e.g. when a | |
1118 | * full modeset needs to happen due to some change). | |
1119 | * | |
1120 | * Returns: | |
1121 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1122 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1123 | * sequence must be restarted. All other errors are fatal. | |
1124 | */ | |
1125 | int | |
1126 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1127 | struct drm_crtc *crtc) | |
1128 | { | |
1129 | struct drm_mode_config *config = &state->dev->mode_config; | |
1130 | struct drm_connector *connector; | |
1131 | struct drm_connector_state *conn_state; | |
1132 | int ret; | |
1133 | ||
1134 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1135 | if (ret) | |
1136 | return ret; | |
1137 | ||
fa3ab4c2 VS |
1138 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1139 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1140 | |
1141 | /* | |
1142 | * Changed connectors are already in @state, so only need to look at the | |
1143 | * current configuration. | |
1144 | */ | |
9a9f5ce8 | 1145 | drm_for_each_connector(connector, state->dev) { |
cc4ceb48 DV |
1146 | if (connector->state->crtc != crtc) |
1147 | continue; | |
1148 | ||
1149 | conn_state = drm_atomic_get_connector_state(state, connector); | |
1150 | if (IS_ERR(conn_state)) | |
1151 | return PTR_ERR(conn_state); | |
1152 | } | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1157 | ||
e01e9f75 ML |
1158 | /** |
1159 | * drm_atomic_add_affected_planes - add planes for crtc | |
1160 | * @state: atomic state | |
1161 | * @crtc: DRM crtc | |
1162 | * | |
1163 | * This function walks the current configuration and adds all planes | |
1164 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1165 | * when an atomic commit also needs to check all currently enabled plane on | |
1166 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1167 | * to avoid special code to force-enable all planes. | |
1168 | * | |
1169 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1170 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1171 | * a CRTC will not reduce parallism of atomic updates. | |
1172 | * | |
1173 | * Returns: | |
1174 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1175 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1176 | * sequence must be restarted. All other errors are fatal. | |
1177 | */ | |
1178 | int | |
1179 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1180 | struct drm_crtc *crtc) | |
1181 | { | |
1182 | struct drm_plane *plane; | |
1183 | ||
1184 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1185 | ||
1186 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1187 | struct drm_plane_state *plane_state = | |
1188 | drm_atomic_get_plane_state(state, plane); | |
1189 | ||
1190 | if (IS_ERR(plane_state)) | |
1191 | return PTR_ERR(plane_state); | |
1192 | } | |
1193 | return 0; | |
1194 | } | |
1195 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1196 | ||
cc4ceb48 DV |
1197 | /** |
1198 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1199 | * @state: atomic state | |
1200 | * | |
1201 | * This function should be used by legacy entry points which don't understand | |
1202 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1203 | * the slowpath completed. |
cc4ceb48 DV |
1204 | */ |
1205 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1206 | { | |
1207 | int ret; | |
1208 | ||
1209 | retry: | |
1210 | drm_modeset_backoff(state->acquire_ctx); | |
1211 | ||
06eaae46 | 1212 | ret = drm_modeset_lock_all_ctx(state->dev, state->acquire_ctx); |
cc4ceb48 DV |
1213 | if (ret) |
1214 | goto retry; | |
1215 | } | |
1216 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1217 | ||
1218 | /** | |
1219 | * drm_atomic_check_only - check whether a given config would work | |
1220 | * @state: atomic configuration to check | |
1221 | * | |
1222 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1223 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1224 | * backoff dance and restart. All other errors are fatal. | |
1225 | * | |
1226 | * Returns: | |
1227 | * 0 on success, negative error code on failure. | |
1228 | */ | |
1229 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1230 | { | |
5e743737 RC |
1231 | struct drm_device *dev = state->dev; |
1232 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1233 | struct drm_plane *plane; |
1234 | struct drm_plane_state *plane_state; | |
1235 | struct drm_crtc *crtc; | |
1236 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1237 | int i, ret = 0; |
cc4ceb48 | 1238 | |
17a38d9c | 1239 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1240 | |
df63b999 ACO |
1241 | for_each_plane_in_state(state, plane, plane_state, i) { |
1242 | ret = drm_atomic_plane_check(plane, plane_state); | |
5e743737 | 1243 | if (ret) { |
9f4c97a2 VS |
1244 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1245 | plane->base.id, plane->name); | |
5e743737 RC |
1246 | return ret; |
1247 | } | |
1248 | } | |
1249 | ||
df63b999 ACO |
1250 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
1251 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
5e743737 | 1252 | if (ret) { |
fa3ab4c2 VS |
1253 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1254 | crtc->base.id, crtc->name); | |
5e743737 RC |
1255 | return ret; |
1256 | } | |
1257 | } | |
1258 | ||
cc4ceb48 | 1259 | if (config->funcs->atomic_check) |
5e743737 RC |
1260 | ret = config->funcs->atomic_check(state->dev, state); |
1261 | ||
d34f20d6 | 1262 | if (!state->allow_modeset) { |
df63b999 | 1263 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1264 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1265 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1266 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1267 | return -EINVAL; |
1268 | } | |
1269 | } | |
1270 | } | |
1271 | ||
5e743737 | 1272 | return ret; |
cc4ceb48 DV |
1273 | } |
1274 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1275 | ||
1276 | /** | |
1277 | * drm_atomic_commit - commit configuration atomically | |
1278 | * @state: atomic configuration to check | |
1279 | * | |
1280 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1281 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1282 | * backoff dance and restart. All other errors are fatal. | |
1283 | * | |
1284 | * Also note that on successful execution ownership of @state is transferred | |
1285 | * from the caller of this function to the function itself. The caller must not | |
1286 | * free or in any other way access @state. If the function fails then the caller | |
1287 | * must clean up @state itself. | |
1288 | * | |
1289 | * Returns: | |
1290 | * 0 on success, negative error code on failure. | |
1291 | */ | |
1292 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1293 | { | |
1294 | struct drm_mode_config *config = &state->dev->mode_config; | |
1295 | int ret; | |
1296 | ||
1297 | ret = drm_atomic_check_only(state); | |
1298 | if (ret) | |
1299 | return ret; | |
1300 | ||
17a38d9c | 1301 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1302 | |
1303 | return config->funcs->atomic_commit(state->dev, state, false); | |
1304 | } | |
1305 | EXPORT_SYMBOL(drm_atomic_commit); | |
1306 | ||
1307 | /** | |
1308 | * drm_atomic_async_commit - atomic&async configuration commit | |
1309 | * @state: atomic configuration to check | |
1310 | * | |
1311 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1312 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1313 | * backoff dance and restart. All other errors are fatal. | |
1314 | * | |
1315 | * Also note that on successful execution ownership of @state is transferred | |
1316 | * from the caller of this function to the function itself. The caller must not | |
1317 | * free or in any other way access @state. If the function fails then the caller | |
1318 | * must clean up @state itself. | |
1319 | * | |
1320 | * Returns: | |
1321 | * 0 on success, negative error code on failure. | |
1322 | */ | |
1323 | int drm_atomic_async_commit(struct drm_atomic_state *state) | |
1324 | { | |
1325 | struct drm_mode_config *config = &state->dev->mode_config; | |
1326 | int ret; | |
1327 | ||
1328 | ret = drm_atomic_check_only(state); | |
1329 | if (ret) | |
1330 | return ret; | |
1331 | ||
17a38d9c | 1332 | DRM_DEBUG_ATOMIC("commiting %p asynchronously\n", state); |
cc4ceb48 DV |
1333 | |
1334 | return config->funcs->atomic_commit(state->dev, state, true); | |
1335 | } | |
1336 | EXPORT_SYMBOL(drm_atomic_async_commit); | |
d34f20d6 RC |
1337 | |
1338 | /* | |
1339 | * The big monstor ioctl | |
1340 | */ | |
1341 | ||
1342 | static struct drm_pending_vblank_event *create_vblank_event( | |
1343 | struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data) | |
1344 | { | |
1345 | struct drm_pending_vblank_event *e = NULL; | |
1346 | unsigned long flags; | |
1347 | ||
1348 | spin_lock_irqsave(&dev->event_lock, flags); | |
1349 | if (file_priv->event_space < sizeof e->event) { | |
1350 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1351 | goto out; | |
1352 | } | |
1353 | file_priv->event_space -= sizeof e->event; | |
1354 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1355 | ||
1356 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
1357 | if (e == NULL) { | |
1358 | spin_lock_irqsave(&dev->event_lock, flags); | |
1359 | file_priv->event_space += sizeof e->event; | |
1360 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1361 | goto out; | |
1362 | } | |
1363 | ||
1364 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
1365 | e->event.base.length = sizeof e->event; | |
1366 | e->event.user_data = user_data; | |
1367 | e->base.event = &e->event.base; | |
1368 | e->base.file_priv = file_priv; | |
1369 | e->base.destroy = (void (*) (struct drm_pending_event *)) kfree; | |
1370 | ||
1371 | out: | |
1372 | return e; | |
1373 | } | |
1374 | ||
1375 | static void destroy_vblank_event(struct drm_device *dev, | |
1376 | struct drm_file *file_priv, struct drm_pending_vblank_event *e) | |
1377 | { | |
1378 | unsigned long flags; | |
1379 | ||
1380 | spin_lock_irqsave(&dev->event_lock, flags); | |
1381 | file_priv->event_space += sizeof e->event; | |
1382 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1383 | kfree(e); | |
1384 | } | |
1385 | ||
1386 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1387 | struct drm_mode_object *obj, struct drm_property *prop, | |
1388 | uint64_t prop_value) | |
1389 | { | |
1390 | struct drm_mode_object *ref; | |
1391 | int ret; | |
1392 | ||
1393 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1394 | return -EINVAL; | |
1395 | ||
1396 | switch (obj->type) { | |
1397 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1398 | struct drm_connector *connector = obj_to_connector(obj); | |
1399 | struct drm_connector_state *connector_state; | |
1400 | ||
1401 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1402 | if (IS_ERR(connector_state)) { | |
1403 | ret = PTR_ERR(connector_state); | |
1404 | break; | |
1405 | } | |
1406 | ||
1407 | ret = drm_atomic_connector_set_property(connector, | |
1408 | connector_state, prop, prop_value); | |
1409 | break; | |
1410 | } | |
1411 | case DRM_MODE_OBJECT_CRTC: { | |
1412 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1413 | struct drm_crtc_state *crtc_state; | |
1414 | ||
1415 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1416 | if (IS_ERR(crtc_state)) { | |
1417 | ret = PTR_ERR(crtc_state); | |
1418 | break; | |
1419 | } | |
1420 | ||
1421 | ret = drm_atomic_crtc_set_property(crtc, | |
1422 | crtc_state, prop, prop_value); | |
1423 | break; | |
1424 | } | |
1425 | case DRM_MODE_OBJECT_PLANE: { | |
1426 | struct drm_plane *plane = obj_to_plane(obj); | |
1427 | struct drm_plane_state *plane_state; | |
1428 | ||
1429 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1430 | if (IS_ERR(plane_state)) { | |
1431 | ret = PTR_ERR(plane_state); | |
1432 | break; | |
1433 | } | |
1434 | ||
1435 | ret = drm_atomic_plane_set_property(plane, | |
1436 | plane_state, prop, prop_value); | |
1437 | break; | |
1438 | } | |
1439 | default: | |
1440 | ret = -EINVAL; | |
1441 | break; | |
1442 | } | |
1443 | ||
1444 | drm_property_change_valid_put(prop, ref); | |
1445 | return ret; | |
1446 | } | |
1447 | ||
0f45c26f | 1448 | /** |
9744bf41 | 1449 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1450 | * |
1451 | * @dev: drm device to check. | |
1452 | * @plane_mask: plane mask for planes that were updated. | |
1453 | * @ret: return value, can be -EDEADLK for a retry. | |
1454 | * | |
1455 | * Before doing an update plane->old_fb is set to plane->fb, | |
1456 | * but before dropping the locks old_fb needs to be set to NULL | |
1457 | * and plane->fb updated. This is a common operation for each | |
1458 | * atomic update, so this call is split off as a helper. | |
1459 | */ | |
1460 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1461 | unsigned plane_mask, | |
1462 | int ret) | |
1463 | { | |
1464 | struct drm_plane *plane; | |
1465 | ||
1466 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1467 | * locks (ie. while it is still safe to deref plane->state). We | |
1468 | * need to do this here because the driver entry points cannot | |
1469 | * distinguish between legacy and atomic ioctls. | |
1470 | */ | |
1471 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1472 | if (ret == 0) { | |
1473 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1474 | if (new_fb) | |
1475 | drm_framebuffer_reference(new_fb); | |
1476 | plane->fb = new_fb; | |
1477 | plane->crtc = plane->state->crtc; | |
1478 | ||
1479 | if (plane->old_fb) | |
1480 | drm_framebuffer_unreference(plane->old_fb); | |
1481 | } | |
1482 | plane->old_fb = NULL; | |
1483 | } | |
1484 | } | |
1485 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1486 | ||
d34f20d6 RC |
1487 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
1488 | void *data, struct drm_file *file_priv) | |
1489 | { | |
1490 | struct drm_mode_atomic *arg = data; | |
1491 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
1492 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
1493 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
1494 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
1495 | unsigned int copied_objs, copied_props; | |
1496 | struct drm_atomic_state *state; | |
1497 | struct drm_modeset_acquire_ctx ctx; | |
1498 | struct drm_plane *plane; | |
df63b999 ACO |
1499 | struct drm_crtc *crtc; |
1500 | struct drm_crtc_state *crtc_state; | |
45723728 | 1501 | unsigned plane_mask; |
d34f20d6 RC |
1502 | int ret = 0; |
1503 | unsigned int i, j; | |
1504 | ||
1505 | /* disallow for drivers not supporting atomic: */ | |
1506 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1507 | return -EINVAL; | |
1508 | ||
1509 | /* disallow for userspace that has not enabled atomic cap (even | |
1510 | * though this may be a bit overkill, since legacy userspace | |
1511 | * wouldn't know how to call this ioctl) | |
1512 | */ | |
1513 | if (!file_priv->atomic) | |
1514 | return -EINVAL; | |
1515 | ||
1516 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
1517 | return -EINVAL; | |
1518 | ||
1519 | if (arg->reserved) | |
1520 | return -EINVAL; | |
1521 | ||
1522 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
1523 | !dev->mode_config.async_page_flip) | |
1524 | return -EINVAL; | |
1525 | ||
1526 | /* can't test and expect an event at the same time. */ | |
1527 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
1528 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1529 | return -EINVAL; | |
1530 | ||
1531 | drm_modeset_acquire_init(&ctx, 0); | |
1532 | ||
1533 | state = drm_atomic_state_alloc(dev); | |
1534 | if (!state) | |
1535 | return -ENOMEM; | |
1536 | ||
1537 | state->acquire_ctx = &ctx; | |
1538 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
1539 | ||
1540 | retry: | |
45723728 | 1541 | plane_mask = 0; |
d34f20d6 RC |
1542 | copied_objs = 0; |
1543 | copied_props = 0; | |
1544 | ||
1545 | for (i = 0; i < arg->count_objs; i++) { | |
1546 | uint32_t obj_id, count_props; | |
1547 | struct drm_mode_object *obj; | |
1548 | ||
1549 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
1550 | ret = -EFAULT; | |
ec9f932e | 1551 | goto out; |
d34f20d6 RC |
1552 | } |
1553 | ||
1554 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
1555 | if (!obj || !obj->properties) { | |
1556 | ret = -ENOENT; | |
ec9f932e | 1557 | goto out; |
d34f20d6 RC |
1558 | } |
1559 | ||
d34f20d6 RC |
1560 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
1561 | ret = -EFAULT; | |
ec9f932e | 1562 | goto out; |
d34f20d6 RC |
1563 | } |
1564 | ||
1565 | copied_objs++; | |
1566 | ||
1567 | for (j = 0; j < count_props; j++) { | |
1568 | uint32_t prop_id; | |
1569 | uint64_t prop_value; | |
1570 | struct drm_property *prop; | |
1571 | ||
1572 | if (get_user(prop_id, props_ptr + copied_props)) { | |
1573 | ret = -EFAULT; | |
ec9f932e | 1574 | goto out; |
d34f20d6 RC |
1575 | } |
1576 | ||
1577 | prop = drm_property_find(dev, prop_id); | |
1578 | if (!prop) { | |
1579 | ret = -ENOENT; | |
ec9f932e | 1580 | goto out; |
d34f20d6 RC |
1581 | } |
1582 | ||
42c5814c GR |
1583 | if (copy_from_user(&prop_value, |
1584 | prop_values_ptr + copied_props, | |
1585 | sizeof(prop_value))) { | |
d34f20d6 | 1586 | ret = -EFAULT; |
ec9f932e | 1587 | goto out; |
d34f20d6 RC |
1588 | } |
1589 | ||
1590 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
1591 | if (ret) | |
ec9f932e | 1592 | goto out; |
d34f20d6 RC |
1593 | |
1594 | copied_props++; | |
1595 | } | |
a9cc54ee | 1596 | |
c4749c9a ML |
1597 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
1598 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
1599 | plane = obj_to_plane(obj); |
1600 | plane_mask |= (1 << drm_plane_index(plane)); | |
1601 | plane->old_fb = plane->fb; | |
1602 | } | |
d34f20d6 RC |
1603 | } |
1604 | ||
1605 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
df63b999 | 1606 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
d34f20d6 RC |
1607 | struct drm_pending_vblank_event *e; |
1608 | ||
d34f20d6 RC |
1609 | e = create_vblank_event(dev, file_priv, arg->user_data); |
1610 | if (!e) { | |
1611 | ret = -ENOMEM; | |
ec9f932e | 1612 | goto out; |
d34f20d6 RC |
1613 | } |
1614 | ||
1615 | crtc_state->event = e; | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
c4749c9a ML |
1620 | /* |
1621 | * Unlike commit, check_only does not clean up state. | |
1622 | * Below we call drm_atomic_state_free for it. | |
1623 | */ | |
d34f20d6 | 1624 | ret = drm_atomic_check_only(state); |
d34f20d6 RC |
1625 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
1626 | ret = drm_atomic_async_commit(state); | |
1627 | } else { | |
1628 | ret = drm_atomic_commit(state); | |
1629 | } | |
1630 | ||
ec9f932e | 1631 | out: |
0f45c26f | 1632 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 1633 | |
c4749c9a ML |
1634 | if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
1635 | /* | |
1636 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive, | |
1637 | * if they weren't, this code should be called on success | |
1638 | * for TEST_ONLY too. | |
1639 | */ | |
1640 | ||
1641 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1642 | if (!crtc_state->event) | |
1643 | continue; | |
1644 | ||
1645 | destroy_vblank_event(dev, file_priv, | |
1646 | crtc_state->event); | |
1647 | } | |
1648 | } | |
1649 | ||
ec9f932e ML |
1650 | if (ret == -EDEADLK) { |
1651 | drm_atomic_state_clear(state); | |
1652 | drm_modeset_backoff(&ctx); | |
1653 | goto retry; | |
1654 | } | |
d34f20d6 | 1655 | |
c4749c9a | 1656 | if (ret || arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) |
ec9f932e | 1657 | drm_atomic_state_free(state); |
d34f20d6 RC |
1658 | |
1659 | drm_modeset_drop_locks(&ctx); | |
1660 | drm_modeset_acquire_fini(&ctx); | |
1661 | ||
1662 | return ret; | |
d34f20d6 | 1663 | } |