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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> | |
5488dc16 | 31 | #include <drm/drm_mode.h> |
cc4ceb48 DV |
32 | #include <drm/drm_plane_helper.h> |
33 | ||
be35f94f TR |
34 | #include "drm_crtc_internal.h" |
35 | ||
036ef573 ML |
36 | /** |
37 | * drm_atomic_state_default_release - | |
38 | * release memory initialized by drm_atomic_state_init | |
39 | * @state: atomic state | |
40 | * | |
41 | * Free all the memory allocated by drm_atomic_state_init. | |
42 | * This is useful for drivers that subclass the atomic state. | |
43 | */ | |
44 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
45 | { |
46 | kfree(state->connectors); | |
47 | kfree(state->connector_states); | |
48 | kfree(state->crtcs); | |
49 | kfree(state->crtc_states); | |
50 | kfree(state->planes); | |
51 | kfree(state->plane_states); | |
cc4ceb48 | 52 | } |
036ef573 | 53 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
54 | |
55 | /** | |
036ef573 | 56 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 57 | * @dev: DRM device |
036ef573 | 58 | * @state: atomic state |
cc4ceb48 | 59 | * |
036ef573 ML |
60 | * Default implementation for filling in a new atomic state. |
61 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 62 | */ |
036ef573 ML |
63 | int |
64 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 65 | { |
d34f20d6 RC |
66 | /* TODO legacy paths should maybe do a better job about |
67 | * setting this appropriately? | |
68 | */ | |
69 | state->allow_modeset = true; | |
70 | ||
cc4ceb48 DV |
71 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
72 | sizeof(*state->crtcs), GFP_KERNEL); | |
73 | if (!state->crtcs) | |
74 | goto fail; | |
75 | state->crtc_states = kcalloc(dev->mode_config.num_crtc, | |
76 | sizeof(*state->crtc_states), GFP_KERNEL); | |
77 | if (!state->crtc_states) | |
78 | goto fail; | |
79 | state->planes = kcalloc(dev->mode_config.num_total_plane, | |
80 | sizeof(*state->planes), GFP_KERNEL); | |
81 | if (!state->planes) | |
82 | goto fail; | |
83 | state->plane_states = kcalloc(dev->mode_config.num_total_plane, | |
84 | sizeof(*state->plane_states), GFP_KERNEL); | |
85 | if (!state->plane_states) | |
86 | goto fail; | |
cc4ceb48 DV |
87 | |
88 | state->dev = dev; | |
89 | ||
036ef573 | 90 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 91 | |
036ef573 | 92 | return 0; |
cc4ceb48 | 93 | fail: |
036ef573 ML |
94 | drm_atomic_state_default_release(state); |
95 | return -ENOMEM; | |
96 | } | |
97 | EXPORT_SYMBOL(drm_atomic_state_init); | |
98 | ||
99 | /** | |
100 | * drm_atomic_state_alloc - allocate atomic state | |
101 | * @dev: DRM device | |
102 | * | |
103 | * This allocates an empty atomic state to track updates. | |
104 | */ | |
105 | struct drm_atomic_state * | |
106 | drm_atomic_state_alloc(struct drm_device *dev) | |
107 | { | |
108 | struct drm_mode_config *config = &dev->mode_config; | |
109 | struct drm_atomic_state *state; | |
110 | ||
111 | if (!config->funcs->atomic_state_alloc) { | |
112 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
113 | if (!state) | |
114 | return NULL; | |
115 | if (drm_atomic_state_init(dev, state) < 0) { | |
116 | kfree(state); | |
117 | return NULL; | |
118 | } | |
119 | return state; | |
120 | } | |
cc4ceb48 | 121 | |
036ef573 | 122 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
123 | } |
124 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
125 | ||
126 | /** | |
036ef573 | 127 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
128 | * @state: atomic state |
129 | * | |
036ef573 ML |
130 | * Default implementation for clearing atomic state. |
131 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 132 | */ |
036ef573 | 133 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
134 | { |
135 | struct drm_device *dev = state->dev; | |
6f75cea6 | 136 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
137 | int i; |
138 | ||
17a38d9c | 139 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 140 | |
f52b69f1 | 141 | for (i = 0; i < state->num_connector; i++) { |
cc4ceb48 DV |
142 | struct drm_connector *connector = state->connectors[i]; |
143 | ||
144 | if (!connector) | |
145 | continue; | |
146 | ||
460e8e2c | 147 | /* |
b837ba0a | 148 | * FIXME: Nonblocking commits can race with connector unplugging and |
460e8e2c DV |
149 | * there's currently nothing that prevents cleanup up state for |
150 | * deleted connectors. As long as the callback doesn't look at | |
151 | * the connector we'll be fine though, so make sure that's the | |
152 | * case by setting all connector pointers to NULL. | |
153 | */ | |
154 | state->connector_states[i]->connector = NULL; | |
155 | connector->funcs->atomic_destroy_state(NULL, | |
cc4ceb48 | 156 | state->connector_states[i]); |
8a5c0bde | 157 | state->connectors[i] = NULL; |
9469244d | 158 | state->connector_states[i] = NULL; |
b164d31f | 159 | drm_connector_unreference(connector); |
cc4ceb48 DV |
160 | } |
161 | ||
6f75cea6 | 162 | for (i = 0; i < config->num_crtc; i++) { |
cc4ceb48 DV |
163 | struct drm_crtc *crtc = state->crtcs[i]; |
164 | ||
165 | if (!crtc) | |
166 | continue; | |
167 | ||
168 | crtc->funcs->atomic_destroy_state(crtc, | |
169 | state->crtc_states[i]); | |
8a5c0bde | 170 | state->crtcs[i] = NULL; |
9469244d | 171 | state->crtc_states[i] = NULL; |
cc4ceb48 DV |
172 | } |
173 | ||
6f75cea6 | 174 | for (i = 0; i < config->num_total_plane; i++) { |
cc4ceb48 DV |
175 | struct drm_plane *plane = state->planes[i]; |
176 | ||
177 | if (!plane) | |
178 | continue; | |
179 | ||
180 | plane->funcs->atomic_destroy_state(plane, | |
181 | state->plane_states[i]); | |
8a5c0bde | 182 | state->planes[i] = NULL; |
9469244d | 183 | state->plane_states[i] = NULL; |
cc4ceb48 DV |
184 | } |
185 | } | |
036ef573 ML |
186 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
187 | ||
188 | /** | |
189 | * drm_atomic_state_clear - clear state object | |
190 | * @state: atomic state | |
191 | * | |
192 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
193 | * all locks. So someone else could sneak in and change the current modeset | |
194 | * configuration. Which means that all the state assembled in @state is no | |
195 | * longer an atomic update to the current state, but to some arbitrary earlier | |
196 | * state. Which could break assumptions the driver's ->atomic_check likely | |
197 | * relies on. | |
198 | * | |
199 | * Hence we must clear all cached state and completely start over, using this | |
200 | * function. | |
201 | */ | |
202 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
203 | { | |
204 | struct drm_device *dev = state->dev; | |
205 | struct drm_mode_config *config = &dev->mode_config; | |
206 | ||
207 | if (config->funcs->atomic_state_clear) | |
208 | config->funcs->atomic_state_clear(state); | |
209 | else | |
210 | drm_atomic_state_default_clear(state); | |
211 | } | |
cc4ceb48 DV |
212 | EXPORT_SYMBOL(drm_atomic_state_clear); |
213 | ||
214 | /** | |
215 | * drm_atomic_state_free - free all memory for an atomic state | |
216 | * @state: atomic state to deallocate | |
217 | * | |
218 | * This frees all memory associated with an atomic state, including all the | |
219 | * per-object state for planes, crtcs and connectors. | |
220 | */ | |
221 | void drm_atomic_state_free(struct drm_atomic_state *state) | |
222 | { | |
036ef573 ML |
223 | struct drm_device *dev; |
224 | struct drm_mode_config *config; | |
225 | ||
a0211bb4 ACO |
226 | if (!state) |
227 | return; | |
228 | ||
036ef573 ML |
229 | dev = state->dev; |
230 | config = &dev->mode_config; | |
231 | ||
cc4ceb48 DV |
232 | drm_atomic_state_clear(state); |
233 | ||
17a38d9c | 234 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 235 | |
036ef573 ML |
236 | if (config->funcs->atomic_state_free) { |
237 | config->funcs->atomic_state_free(state); | |
238 | } else { | |
239 | drm_atomic_state_default_release(state); | |
240 | kfree(state); | |
241 | } | |
cc4ceb48 DV |
242 | } |
243 | EXPORT_SYMBOL(drm_atomic_state_free); | |
244 | ||
245 | /** | |
246 | * drm_atomic_get_crtc_state - get crtc state | |
247 | * @state: global atomic state object | |
248 | * @crtc: crtc to get state object for | |
249 | * | |
250 | * This function returns the crtc state for the given crtc, allocating it if | |
251 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
252 | * is consistent. | |
253 | * | |
254 | * Returns: | |
255 | * | |
256 | * Either the allocated state or the error code encoded into the pointer. When | |
257 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
258 | * entire atomic sequence must be restarted. All other errors are fatal. | |
259 | */ | |
260 | struct drm_crtc_state * | |
261 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
262 | struct drm_crtc *crtc) | |
263 | { | |
1b26a5e1 | 264 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
265 | struct drm_crtc_state *crtc_state; |
266 | ||
7f4eaa89 ML |
267 | WARN_ON(!state->acquire_ctx); |
268 | ||
1b26a5e1 ML |
269 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
270 | if (crtc_state) | |
271 | return crtc_state; | |
cc4ceb48 DV |
272 | |
273 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
274 | if (ret) | |
275 | return ERR_PTR(ret); | |
276 | ||
277 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
278 | if (!crtc_state) | |
279 | return ERR_PTR(-ENOMEM); | |
280 | ||
281 | state->crtc_states[index] = crtc_state; | |
282 | state->crtcs[index] = crtc; | |
283 | crtc_state->state = state; | |
284 | ||
fa3ab4c2 VS |
285 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
286 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
287 | |
288 | return crtc_state; | |
289 | } | |
290 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
291 | ||
819364da DS |
292 | /** |
293 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
294 | * @state: the CRTC whose incoming state to update | |
295 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
296 | * | |
297 | * Set a mode (originating from the kernel) on the desired CRTC state. Does | |
298 | * not change any other state properties, including enable, active, or | |
299 | * mode_changed. | |
300 | * | |
301 | * RETURNS: | |
302 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
303 | */ | |
304 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
305 | struct drm_display_mode *mode) | |
306 | { | |
99cf4a29 DS |
307 | struct drm_mode_modeinfo umode; |
308 | ||
819364da DS |
309 | /* Early return for no change. */ |
310 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
311 | return 0; | |
312 | ||
5f911905 | 313 | drm_property_unreference_blob(state->mode_blob); |
99cf4a29 DS |
314 | state->mode_blob = NULL; |
315 | ||
819364da | 316 | if (mode) { |
99cf4a29 DS |
317 | drm_mode_convert_to_umode(&umode, mode); |
318 | state->mode_blob = | |
319 | drm_property_create_blob(state->crtc->dev, | |
320 | sizeof(umode), | |
321 | &umode); | |
322 | if (IS_ERR(state->mode_blob)) | |
323 | return PTR_ERR(state->mode_blob); | |
324 | ||
819364da DS |
325 | drm_mode_copy(&state->mode, mode); |
326 | state->enable = true; | |
327 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
328 | mode->name, state); | |
329 | } else { | |
330 | memset(&state->mode, 0, sizeof(state->mode)); | |
331 | state->enable = false; | |
332 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
333 | state); | |
334 | } | |
335 | ||
336 | return 0; | |
337 | } | |
338 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
339 | ||
955f3c33 DS |
340 | /** |
341 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
342 | * @state: the CRTC whose incoming state to update | |
343 | * @blob: pointer to blob property to use for mode | |
344 | * | |
345 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
346 | * This function will take a reference on the blob property for the CRTC state, | |
347 | * and release the reference held on the state's existing mode property, if any | |
348 | * was set. | |
349 | * | |
350 | * RETURNS: | |
351 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
352 | */ | |
353 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
354 | struct drm_property_blob *blob) | |
355 | { | |
356 | if (blob == state->mode_blob) | |
357 | return 0; | |
358 | ||
5f911905 | 359 | drm_property_unreference_blob(state->mode_blob); |
955f3c33 DS |
360 | state->mode_blob = NULL; |
361 | ||
362 | if (blob) { | |
363 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
364 | drm_mode_convert_umode(&state->mode, | |
365 | (const struct drm_mode_modeinfo *) | |
366 | blob->data)) | |
367 | return -EINVAL; | |
368 | ||
369 | state->mode_blob = drm_property_reference_blob(blob); | |
370 | state->enable = true; | |
371 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
372 | state->mode.name, state); | |
373 | } else { | |
374 | memset(&state->mode, 0, sizeof(state->mode)); | |
375 | state->enable = false; | |
376 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
377 | state); | |
378 | } | |
379 | ||
380 | return 0; | |
381 | } | |
382 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
383 | ||
5488dc16 LL |
384 | /** |
385 | * drm_atomic_replace_property_blob - replace a blob property | |
386 | * @blob: a pointer to the member blob to be replaced | |
387 | * @new_blob: the new blob to replace with | |
5488dc16 LL |
388 | * @replaced: whether the blob has been replaced |
389 | * | |
390 | * RETURNS: | |
391 | * Zero on success, error code on failure | |
392 | */ | |
393 | static void | |
394 | drm_atomic_replace_property_blob(struct drm_property_blob **blob, | |
395 | struct drm_property_blob *new_blob, | |
396 | bool *replaced) | |
397 | { | |
398 | struct drm_property_blob *old_blob = *blob; | |
399 | ||
400 | if (old_blob == new_blob) | |
401 | return; | |
402 | ||
403 | if (old_blob) | |
404 | drm_property_unreference_blob(old_blob); | |
405 | if (new_blob) | |
406 | drm_property_reference_blob(new_blob); | |
407 | *blob = new_blob; | |
408 | *replaced = true; | |
409 | ||
410 | return; | |
411 | } | |
412 | ||
413 | static int | |
414 | drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc, | |
415 | struct drm_property_blob **blob, | |
416 | uint64_t blob_id, | |
417 | ssize_t expected_size, | |
418 | bool *replaced) | |
419 | { | |
420 | struct drm_device *dev = crtc->dev; | |
421 | struct drm_property_blob *new_blob = NULL; | |
422 | ||
423 | if (blob_id != 0) { | |
424 | new_blob = drm_property_lookup_blob(dev, blob_id); | |
425 | if (new_blob == NULL) | |
426 | return -EINVAL; | |
427 | if (expected_size > 0 && expected_size != new_blob->length) | |
428 | return -EINVAL; | |
429 | } | |
430 | ||
431 | drm_atomic_replace_property_blob(blob, new_blob, replaced); | |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
40ecc694 RC |
436 | /** |
437 | * drm_atomic_crtc_set_property - set property on CRTC | |
438 | * @crtc: the drm CRTC to set a property on | |
439 | * @state: the state object to update with the new property value | |
440 | * @property: the property to set | |
441 | * @val: the new property value | |
442 | * | |
443 | * Use this instead of calling crtc->atomic_set_property directly. | |
444 | * This function handles generic/core properties and calls out to | |
445 | * driver's ->atomic_set_property() for driver properties. To ensure | |
446 | * consistent behavior you must call this function rather than the | |
447 | * driver hook directly. | |
448 | * | |
449 | * RETURNS: | |
450 | * Zero on success, error code on failure | |
451 | */ | |
452 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
453 | struct drm_crtc_state *state, struct drm_property *property, | |
454 | uint64_t val) | |
455 | { | |
eab3bbef DV |
456 | struct drm_device *dev = crtc->dev; |
457 | struct drm_mode_config *config = &dev->mode_config; | |
5488dc16 | 458 | bool replaced = false; |
955f3c33 | 459 | int ret; |
eab3bbef | 460 | |
27798365 | 461 | if (property == config->prop_active) |
eab3bbef | 462 | state->active = val; |
955f3c33 DS |
463 | else if (property == config->prop_mode_id) { |
464 | struct drm_property_blob *mode = | |
465 | drm_property_lookup_blob(dev, val); | |
466 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
5f911905 | 467 | drm_property_unreference_blob(mode); |
955f3c33 | 468 | return ret; |
5488dc16 LL |
469 | } else if (property == config->degamma_lut_property) { |
470 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
471 | &state->degamma_lut, | |
472 | val, | |
473 | -1, | |
474 | &replaced); | |
475 | state->color_mgmt_changed = replaced; | |
476 | return ret; | |
477 | } else if (property == config->ctm_property) { | |
478 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
479 | &state->ctm, | |
480 | val, | |
481 | sizeof(struct drm_color_ctm), | |
482 | &replaced); | |
483 | state->color_mgmt_changed = replaced; | |
484 | return ret; | |
485 | } else if (property == config->gamma_lut_property) { | |
486 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
487 | &state->gamma_lut, | |
488 | val, | |
489 | -1, | |
490 | &replaced); | |
491 | state->color_mgmt_changed = replaced; | |
492 | return ret; | |
493 | } else if (crtc->funcs->atomic_set_property) | |
40ecc694 | 494 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
495 | else |
496 | return -EINVAL; | |
497 | ||
498 | return 0; | |
40ecc694 RC |
499 | } |
500 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
501 | ||
c0714fc9 DV |
502 | /** |
503 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
504 | * @crtc: the drm CRTC to set a property on | |
505 | * @state: the state object to get the property value from | |
506 | * @property: the property to set | |
507 | * @val: return location for the property value | |
508 | * | |
ac9c9256 RC |
509 | * This function handles generic/core properties and calls out to |
510 | * driver's ->atomic_get_property() for driver properties. To ensure | |
511 | * consistent behavior you must call this function rather than the | |
512 | * driver hook directly. | |
c0714fc9 DV |
513 | * |
514 | * RETURNS: | |
515 | * Zero on success, error code on failure | |
ac9c9256 | 516 | */ |
bf22f3be GT |
517 | static int |
518 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
519 | const struct drm_crtc_state *state, |
520 | struct drm_property *property, uint64_t *val) | |
521 | { | |
8f164ce4 DS |
522 | struct drm_device *dev = crtc->dev; |
523 | struct drm_mode_config *config = &dev->mode_config; | |
524 | ||
525 | if (property == config->prop_active) | |
526 | *val = state->active; | |
955f3c33 DS |
527 | else if (property == config->prop_mode_id) |
528 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
5488dc16 LL |
529 | else if (property == config->degamma_lut_property) |
530 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
531 | else if (property == config->ctm_property) | |
532 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
533 | else if (property == config->gamma_lut_property) | |
534 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
8f164ce4 | 535 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 536 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
537 | else |
538 | return -EINVAL; | |
539 | ||
540 | return 0; | |
ac9c9256 | 541 | } |
ac9c9256 | 542 | |
5e743737 RC |
543 | /** |
544 | * drm_atomic_crtc_check - check crtc state | |
545 | * @crtc: crtc to check | |
546 | * @state: crtc state to check | |
547 | * | |
548 | * Provides core sanity checks for crtc state. | |
549 | * | |
550 | * RETURNS: | |
551 | * Zero on success, error code on failure | |
552 | */ | |
553 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
554 | struct drm_crtc_state *state) | |
555 | { | |
556 | /* NOTE: we explicitly don't enforce constraints such as primary | |
557 | * layer covering entire screen, since that is something we want | |
558 | * to allow (on hw that supports it). For hw that does not, it | |
559 | * should be checked in driver's crtc->atomic_check() vfunc. | |
560 | * | |
561 | * TODO: Add generic modeset state checks once we support those. | |
562 | */ | |
eab3bbef DV |
563 | |
564 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
565 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
566 | crtc->base.id, crtc->name); | |
eab3bbef DV |
567 | return -EINVAL; |
568 | } | |
569 | ||
99cf4a29 DS |
570 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
571 | * as this is a kernel-internal detail that userspace should never | |
572 | * be able to trigger. */ | |
573 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
574 | WARN_ON(state->enable && !state->mode_blob)) { | |
fa3ab4c2 VS |
575 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
576 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
577 | return -EINVAL; |
578 | } | |
579 | ||
580 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
581 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
582 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
583 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
584 | return -EINVAL; |
585 | } | |
586 | ||
4cba6850 DV |
587 | /* |
588 | * Reject event generation for when a CRTC is off and stays off. | |
589 | * It wouldn't be hard to implement this, but userspace has a track | |
590 | * record of happily burning through 100% cpu (or worse, crash) when the | |
591 | * display pipe is suspended. To avoid all that fun just reject updates | |
592 | * that ask for events since likely that indicates a bug in the | |
593 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
594 | * and legacy page_flip IOCTL which also reject service on a disabled | |
595 | * pipe. | |
596 | */ | |
597 | if (state->event && !state->active && !crtc->state->active) { | |
598 | DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n", | |
599 | crtc->base.id); | |
600 | return -EINVAL; | |
601 | } | |
602 | ||
5e743737 RC |
603 | return 0; |
604 | } | |
605 | ||
cc4ceb48 DV |
606 | /** |
607 | * drm_atomic_get_plane_state - get plane state | |
608 | * @state: global atomic state object | |
609 | * @plane: plane to get state object for | |
610 | * | |
611 | * This function returns the plane state for the given plane, allocating it if | |
612 | * needed. It will also grab the relevant plane lock to make sure that the state | |
613 | * is consistent. | |
614 | * | |
615 | * Returns: | |
616 | * | |
617 | * Either the allocated state or the error code encoded into the pointer. When | |
618 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
619 | * entire atomic sequence must be restarted. All other errors are fatal. | |
620 | */ | |
621 | struct drm_plane_state * | |
622 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
623 | struct drm_plane *plane) | |
624 | { | |
1b26a5e1 | 625 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
626 | struct drm_plane_state *plane_state; |
627 | ||
7f4eaa89 ML |
628 | WARN_ON(!state->acquire_ctx); |
629 | ||
1b26a5e1 ML |
630 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
631 | if (plane_state) | |
632 | return plane_state; | |
cc4ceb48 | 633 | |
4d02e2de | 634 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
635 | if (ret) |
636 | return ERR_PTR(ret); | |
637 | ||
638 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
639 | if (!plane_state) | |
640 | return ERR_PTR(-ENOMEM); | |
641 | ||
642 | state->plane_states[index] = plane_state; | |
643 | state->planes[index] = plane; | |
644 | plane_state->state = state; | |
645 | ||
9f4c97a2 VS |
646 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
647 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
648 | |
649 | if (plane_state->crtc) { | |
650 | struct drm_crtc_state *crtc_state; | |
651 | ||
652 | crtc_state = drm_atomic_get_crtc_state(state, | |
653 | plane_state->crtc); | |
654 | if (IS_ERR(crtc_state)) | |
655 | return ERR_CAST(crtc_state); | |
656 | } | |
657 | ||
658 | return plane_state; | |
659 | } | |
660 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
661 | ||
40ecc694 RC |
662 | /** |
663 | * drm_atomic_plane_set_property - set property on plane | |
664 | * @plane: the drm plane to set a property on | |
665 | * @state: the state object to update with the new property value | |
666 | * @property: the property to set | |
667 | * @val: the new property value | |
668 | * | |
669 | * Use this instead of calling plane->atomic_set_property directly. | |
670 | * This function handles generic/core properties and calls out to | |
671 | * driver's ->atomic_set_property() for driver properties. To ensure | |
672 | * consistent behavior you must call this function rather than the | |
673 | * driver hook directly. | |
674 | * | |
675 | * RETURNS: | |
676 | * Zero on success, error code on failure | |
677 | */ | |
678 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
679 | struct drm_plane_state *state, struct drm_property *property, | |
680 | uint64_t val) | |
681 | { | |
6b4959f4 RC |
682 | struct drm_device *dev = plane->dev; |
683 | struct drm_mode_config *config = &dev->mode_config; | |
684 | ||
685 | if (property == config->prop_fb_id) { | |
686 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
687 | drm_atomic_set_fb_for_plane(state, fb); | |
688 | if (fb) | |
689 | drm_framebuffer_unreference(fb); | |
690 | } else if (property == config->prop_crtc_id) { | |
691 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
692 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
693 | } else if (property == config->prop_crtc_x) { | |
694 | state->crtc_x = U642I64(val); | |
695 | } else if (property == config->prop_crtc_y) { | |
696 | state->crtc_y = U642I64(val); | |
697 | } else if (property == config->prop_crtc_w) { | |
698 | state->crtc_w = val; | |
699 | } else if (property == config->prop_crtc_h) { | |
700 | state->crtc_h = val; | |
701 | } else if (property == config->prop_src_x) { | |
702 | state->src_x = val; | |
703 | } else if (property == config->prop_src_y) { | |
704 | state->src_y = val; | |
705 | } else if (property == config->prop_src_w) { | |
706 | state->src_w = val; | |
707 | } else if (property == config->prop_src_h) { | |
708 | state->src_h = val; | |
1da30627 MR |
709 | } else if (property == config->rotation_property) { |
710 | state->rotation = val; | |
6b4959f4 RC |
711 | } else if (plane->funcs->atomic_set_property) { |
712 | return plane->funcs->atomic_set_property(plane, state, | |
713 | property, val); | |
714 | } else { | |
715 | return -EINVAL; | |
716 | } | |
717 | ||
718 | return 0; | |
40ecc694 RC |
719 | } |
720 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
721 | ||
c0714fc9 DV |
722 | /** |
723 | * drm_atomic_plane_get_property - get property value from plane state | |
724 | * @plane: the drm plane to set a property on | |
725 | * @state: the state object to get the property value from | |
726 | * @property: the property to set | |
727 | * @val: return location for the property value | |
728 | * | |
ac9c9256 RC |
729 | * This function handles generic/core properties and calls out to |
730 | * driver's ->atomic_get_property() for driver properties. To ensure | |
731 | * consistent behavior you must call this function rather than the | |
732 | * driver hook directly. | |
c0714fc9 DV |
733 | * |
734 | * RETURNS: | |
735 | * Zero on success, error code on failure | |
ac9c9256 | 736 | */ |
a97df1cc DV |
737 | static int |
738 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
739 | const struct drm_plane_state *state, |
740 | struct drm_property *property, uint64_t *val) | |
741 | { | |
6b4959f4 RC |
742 | struct drm_device *dev = plane->dev; |
743 | struct drm_mode_config *config = &dev->mode_config; | |
744 | ||
745 | if (property == config->prop_fb_id) { | |
746 | *val = (state->fb) ? state->fb->base.id : 0; | |
747 | } else if (property == config->prop_crtc_id) { | |
748 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
749 | } else if (property == config->prop_crtc_x) { | |
750 | *val = I642U64(state->crtc_x); | |
751 | } else if (property == config->prop_crtc_y) { | |
752 | *val = I642U64(state->crtc_y); | |
753 | } else if (property == config->prop_crtc_w) { | |
754 | *val = state->crtc_w; | |
755 | } else if (property == config->prop_crtc_h) { | |
756 | *val = state->crtc_h; | |
757 | } else if (property == config->prop_src_x) { | |
758 | *val = state->src_x; | |
759 | } else if (property == config->prop_src_y) { | |
760 | *val = state->src_y; | |
761 | } else if (property == config->prop_src_w) { | |
762 | *val = state->src_w; | |
763 | } else if (property == config->prop_src_h) { | |
764 | *val = state->src_h; | |
4cda09ca TU |
765 | } else if (property == config->rotation_property) { |
766 | *val = state->rotation; | |
6b4959f4 | 767 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 768 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
769 | } else { |
770 | return -EINVAL; | |
771 | } | |
772 | ||
773 | return 0; | |
ac9c9256 | 774 | } |
ac9c9256 | 775 | |
f8aeb41c DV |
776 | static bool |
777 | plane_switching_crtc(struct drm_atomic_state *state, | |
778 | struct drm_plane *plane, | |
779 | struct drm_plane_state *plane_state) | |
780 | { | |
781 | if (!plane->state->crtc || !plane_state->crtc) | |
782 | return false; | |
783 | ||
784 | if (plane->state->crtc == plane_state->crtc) | |
785 | return false; | |
786 | ||
787 | /* This could be refined, but currently there's no helper or driver code | |
788 | * to implement direct switching of active planes nor userspace to take | |
789 | * advantage of more direct plane switching without the intermediate | |
790 | * full OFF state. | |
791 | */ | |
792 | return true; | |
793 | } | |
794 | ||
5e743737 RC |
795 | /** |
796 | * drm_atomic_plane_check - check plane state | |
797 | * @plane: plane to check | |
798 | * @state: plane state to check | |
799 | * | |
800 | * Provides core sanity checks for plane state. | |
801 | * | |
802 | * RETURNS: | |
803 | * Zero on success, error code on failure | |
804 | */ | |
805 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
806 | struct drm_plane_state *state) | |
807 | { | |
808 | unsigned int fb_width, fb_height; | |
ead8610d | 809 | int ret; |
5e743737 RC |
810 | |
811 | /* either *both* CRTC and FB must be set, or neither */ | |
812 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 813 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
814 | return -EINVAL; |
815 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 816 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
817 | return -EINVAL; |
818 | } | |
819 | ||
820 | /* if disabled, we don't care about the rest of the state: */ | |
821 | if (!state->crtc) | |
822 | return 0; | |
823 | ||
824 | /* Check whether this plane is usable on this CRTC */ | |
825 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 826 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
827 | return -EINVAL; |
828 | } | |
829 | ||
830 | /* Check whether this plane supports the fb pixel format. */ | |
ead8610d LP |
831 | ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format); |
832 | if (ret) { | |
17a38d9c DV |
833 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", |
834 | drm_get_format_name(state->fb->pixel_format)); | |
ead8610d | 835 | return ret; |
5e743737 RC |
836 | } |
837 | ||
838 | /* Give drivers some help against integer overflows */ | |
839 | if (state->crtc_w > INT_MAX || | |
840 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
841 | state->crtc_h > INT_MAX || | |
842 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
843 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
844 | state->crtc_w, state->crtc_h, | |
845 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
846 | return -ERANGE; |
847 | } | |
848 | ||
849 | fb_width = state->fb->width << 16; | |
850 | fb_height = state->fb->height << 16; | |
851 | ||
852 | /* Make sure source coordinates are inside the fb. */ | |
853 | if (state->src_w > fb_width || | |
854 | state->src_x > fb_width - state->src_w || | |
855 | state->src_h > fb_height || | |
856 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
857 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
858 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
859 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
860 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
861 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
862 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
863 | return -ENOSPC; |
864 | } | |
865 | ||
f8aeb41c | 866 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
867 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
868 | plane->base.id, plane->name); | |
f8aeb41c DV |
869 | return -EINVAL; |
870 | } | |
871 | ||
5e743737 RC |
872 | return 0; |
873 | } | |
874 | ||
cc4ceb48 DV |
875 | /** |
876 | * drm_atomic_get_connector_state - get connector state | |
877 | * @state: global atomic state object | |
878 | * @connector: connector to get state object for | |
879 | * | |
880 | * This function returns the connector state for the given connector, | |
881 | * allocating it if needed. It will also grab the relevant connector lock to | |
882 | * make sure that the state is consistent. | |
883 | * | |
884 | * Returns: | |
885 | * | |
886 | * Either the allocated state or the error code encoded into the pointer. When | |
887 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
888 | * entire atomic sequence must be restarted. All other errors are fatal. | |
889 | */ | |
890 | struct drm_connector_state * | |
891 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
892 | struct drm_connector *connector) | |
893 | { | |
894 | int ret, index; | |
895 | struct drm_mode_config *config = &connector->dev->mode_config; | |
896 | struct drm_connector_state *connector_state; | |
897 | ||
7f4eaa89 ML |
898 | WARN_ON(!state->acquire_ctx); |
899 | ||
c7eb76f4 DV |
900 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
901 | if (ret) | |
902 | return ERR_PTR(ret); | |
903 | ||
cc4ceb48 DV |
904 | index = drm_connector_index(connector); |
905 | ||
f52b69f1 | 906 | if (index >= state->num_connector) { |
5fff80bb ML |
907 | struct drm_connector **c; |
908 | struct drm_connector_state **cs; | |
909 | int alloc = max(index + 1, config->num_connector); | |
910 | ||
911 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
912 | if (!c) | |
913 | return ERR_PTR(-ENOMEM); | |
914 | ||
915 | state->connectors = c; | |
916 | memset(&state->connectors[state->num_connector], 0, | |
917 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
918 | ||
919 | cs = krealloc(state->connector_states, alloc * sizeof(*state->connector_states), GFP_KERNEL); | |
920 | if (!cs) | |
921 | return ERR_PTR(-ENOMEM); | |
922 | ||
923 | state->connector_states = cs; | |
924 | memset(&state->connector_states[state->num_connector], 0, | |
925 | sizeof(*state->connector_states) * (alloc - state->num_connector)); | |
926 | state->num_connector = alloc; | |
f52b69f1 DV |
927 | } |
928 | ||
cc4ceb48 DV |
929 | if (state->connector_states[index]) |
930 | return state->connector_states[index]; | |
931 | ||
cc4ceb48 DV |
932 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
933 | if (!connector_state) | |
934 | return ERR_PTR(-ENOMEM); | |
935 | ||
b164d31f | 936 | drm_connector_reference(connector); |
cc4ceb48 DV |
937 | state->connector_states[index] = connector_state; |
938 | state->connectors[index] = connector; | |
939 | connector_state->state = state; | |
940 | ||
17a38d9c DV |
941 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", |
942 | connector->base.id, connector_state, state); | |
cc4ceb48 DV |
943 | |
944 | if (connector_state->crtc) { | |
945 | struct drm_crtc_state *crtc_state; | |
946 | ||
947 | crtc_state = drm_atomic_get_crtc_state(state, | |
948 | connector_state->crtc); | |
949 | if (IS_ERR(crtc_state)) | |
950 | return ERR_CAST(crtc_state); | |
951 | } | |
952 | ||
953 | return connector_state; | |
954 | } | |
955 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
956 | ||
40ecc694 RC |
957 | /** |
958 | * drm_atomic_connector_set_property - set property on connector. | |
959 | * @connector: the drm connector to set a property on | |
960 | * @state: the state object to update with the new property value | |
961 | * @property: the property to set | |
962 | * @val: the new property value | |
963 | * | |
964 | * Use this instead of calling connector->atomic_set_property directly. | |
965 | * This function handles generic/core properties and calls out to | |
966 | * driver's ->atomic_set_property() for driver properties. To ensure | |
967 | * consistent behavior you must call this function rather than the | |
968 | * driver hook directly. | |
969 | * | |
970 | * RETURNS: | |
971 | * Zero on success, error code on failure | |
972 | */ | |
973 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
974 | struct drm_connector_state *state, struct drm_property *property, | |
975 | uint64_t val) | |
976 | { | |
977 | struct drm_device *dev = connector->dev; | |
978 | struct drm_mode_config *config = &dev->mode_config; | |
979 | ||
ae16c597 RC |
980 | if (property == config->prop_crtc_id) { |
981 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
982 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
983 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
984 | /* setting DPMS property requires special handling, which |
985 | * is done in legacy setprop path for us. Disallow (for | |
986 | * now?) atomic writes to DPMS property: | |
987 | */ | |
988 | return -EINVAL; | |
989 | } else if (connector->funcs->atomic_set_property) { | |
990 | return connector->funcs->atomic_set_property(connector, | |
991 | state, property, val); | |
992 | } else { | |
993 | return -EINVAL; | |
994 | } | |
995 | } | |
996 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
997 | ||
c0714fc9 DV |
998 | /** |
999 | * drm_atomic_connector_get_property - get property value from connector state | |
1000 | * @connector: the drm connector to set a property on | |
1001 | * @state: the state object to get the property value from | |
1002 | * @property: the property to set | |
1003 | * @val: return location for the property value | |
1004 | * | |
ac9c9256 RC |
1005 | * This function handles generic/core properties and calls out to |
1006 | * driver's ->atomic_get_property() for driver properties. To ensure | |
1007 | * consistent behavior you must call this function rather than the | |
1008 | * driver hook directly. | |
c0714fc9 DV |
1009 | * |
1010 | * RETURNS: | |
1011 | * Zero on success, error code on failure | |
ac9c9256 | 1012 | */ |
a97df1cc DV |
1013 | static int |
1014 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
1015 | const struct drm_connector_state *state, |
1016 | struct drm_property *property, uint64_t *val) | |
1017 | { | |
1018 | struct drm_device *dev = connector->dev; | |
1019 | struct drm_mode_config *config = &dev->mode_config; | |
1020 | ||
ae16c597 RC |
1021 | if (property == config->prop_crtc_id) { |
1022 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
1023 | } else if (property == config->dpms_property) { | |
ac9c9256 RC |
1024 | *val = connector->dpms; |
1025 | } else if (connector->funcs->atomic_get_property) { | |
1026 | return connector->funcs->atomic_get_property(connector, | |
1027 | state, property, val); | |
1028 | } else { | |
1029 | return -EINVAL; | |
1030 | } | |
1031 | ||
1032 | return 0; | |
1033 | } | |
ac9c9256 | 1034 | |
88a48e29 RC |
1035 | int drm_atomic_get_property(struct drm_mode_object *obj, |
1036 | struct drm_property *property, uint64_t *val) | |
1037 | { | |
1038 | struct drm_device *dev = property->dev; | |
1039 | int ret; | |
1040 | ||
1041 | switch (obj->type) { | |
1042 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1043 | struct drm_connector *connector = obj_to_connector(obj); | |
1044 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
1045 | ret = drm_atomic_connector_get_property(connector, | |
1046 | connector->state, property, val); | |
1047 | break; | |
1048 | } | |
1049 | case DRM_MODE_OBJECT_CRTC: { | |
1050 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1051 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1052 | ret = drm_atomic_crtc_get_property(crtc, | |
1053 | crtc->state, property, val); | |
1054 | break; | |
1055 | } | |
1056 | case DRM_MODE_OBJECT_PLANE: { | |
1057 | struct drm_plane *plane = obj_to_plane(obj); | |
1058 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
1059 | ret = drm_atomic_plane_get_property(plane, | |
1060 | plane->state, property, val); | |
1061 | break; | |
1062 | } | |
1063 | default: | |
1064 | ret = -EINVAL; | |
1065 | break; | |
1066 | } | |
1067 | ||
1068 | return ret; | |
1069 | } | |
1070 | ||
cc4ceb48 DV |
1071 | /** |
1072 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 1073 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
1074 | * @crtc: crtc to use for the plane |
1075 | * | |
1076 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
1077 | * for the new crtc, as needed. This function takes care of all these details | |
1078 | * besides updating the pointer in the state object itself. | |
1079 | * | |
1080 | * Returns: | |
1081 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1082 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1083 | * sequence must be restarted. All other errors are fatal. | |
1084 | */ | |
1085 | int | |
07cc0ef6 DV |
1086 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
1087 | struct drm_crtc *crtc) | |
cc4ceb48 | 1088 | { |
07cc0ef6 | 1089 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
1090 | struct drm_crtc_state *crtc_state; |
1091 | ||
6ddd388a RC |
1092 | if (plane_state->crtc) { |
1093 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1094 | plane_state->crtc); | |
1095 | if (WARN_ON(IS_ERR(crtc_state))) | |
1096 | return PTR_ERR(crtc_state); | |
1097 | ||
1098 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1099 | } | |
1100 | ||
1101 | plane_state->crtc = crtc; | |
1102 | ||
cc4ceb48 DV |
1103 | if (crtc) { |
1104 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1105 | crtc); | |
1106 | if (IS_ERR(crtc_state)) | |
1107 | return PTR_ERR(crtc_state); | |
6ddd388a | 1108 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1109 | } |
1110 | ||
cc4ceb48 | 1111 | if (crtc) |
fa3ab4c2 VS |
1112 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1113 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1114 | else |
17a38d9c DV |
1115 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1116 | plane_state); | |
cc4ceb48 DV |
1117 | |
1118 | return 0; | |
1119 | } | |
1120 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1121 | ||
321ebf04 | 1122 | /** |
16d78bc2 | 1123 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1124 | * @plane_state: atomic state object for the plane |
1125 | * @fb: fb to use for the plane | |
1126 | * | |
1127 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1128 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1129 | * function takes care of all these details besides updating the pointer in the | |
1130 | * state object itself. | |
1131 | */ | |
1132 | void | |
1133 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1134 | struct drm_framebuffer *fb) | |
1135 | { | |
1136 | if (plane_state->fb) | |
1137 | drm_framebuffer_unreference(plane_state->fb); | |
1138 | if (fb) | |
1139 | drm_framebuffer_reference(fb); | |
1140 | plane_state->fb = fb; | |
1141 | ||
1142 | if (fb) | |
17a38d9c DV |
1143 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1144 | fb->base.id, plane_state); | |
321ebf04 | 1145 | else |
17a38d9c DV |
1146 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1147 | plane_state); | |
321ebf04 DV |
1148 | } |
1149 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1150 | ||
cc4ceb48 DV |
1151 | /** |
1152 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1153 | * @conn_state: atomic state object for the connector | |
1154 | * @crtc: crtc to use for the connector | |
1155 | * | |
1156 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1157 | * state for the new crtc, as needed. This function takes care of all these | |
1158 | * details besides updating the pointer in the state object itself. | |
1159 | * | |
1160 | * Returns: | |
1161 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1162 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1163 | * sequence must be restarted. All other errors are fatal. | |
1164 | */ | |
1165 | int | |
1166 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1167 | struct drm_crtc *crtc) | |
1168 | { | |
1169 | struct drm_crtc_state *crtc_state; | |
1170 | ||
4cd9fa52 ML |
1171 | if (conn_state->crtc && conn_state->crtc != crtc) { |
1172 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, | |
1173 | conn_state->crtc); | |
1174 | ||
1175 | crtc_state->connector_mask &= | |
1176 | ~(1 << drm_connector_index(conn_state->connector)); | |
1177 | } | |
1178 | ||
cc4ceb48 DV |
1179 | if (crtc) { |
1180 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1181 | if (IS_ERR(crtc_state)) | |
1182 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1183 | |
1184 | crtc_state->connector_mask |= | |
1185 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 DV |
1186 | } |
1187 | ||
1188 | conn_state->crtc = crtc; | |
1189 | ||
1190 | if (crtc) | |
fa3ab4c2 VS |
1191 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1192 | conn_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1193 | else |
17a38d9c DV |
1194 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1195 | conn_state); | |
cc4ceb48 DV |
1196 | |
1197 | return 0; | |
1198 | } | |
1199 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1200 | ||
1201 | /** | |
1202 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1203 | * @state: atomic state | |
1204 | * @crtc: DRM crtc | |
1205 | * | |
1206 | * This function walks the current configuration and adds all connectors | |
1207 | * currently using @crtc to the atomic configuration @state. Note that this | |
1208 | * function must acquire the connection mutex. This can potentially cause | |
1209 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1210 | * drivers and helpers should only call this when really needed (e.g. when a | |
1211 | * full modeset needs to happen due to some change). | |
1212 | * | |
1213 | * Returns: | |
1214 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1215 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1216 | * sequence must be restarted. All other errors are fatal. | |
1217 | */ | |
1218 | int | |
1219 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1220 | struct drm_crtc *crtc) | |
1221 | { | |
1222 | struct drm_mode_config *config = &state->dev->mode_config; | |
1223 | struct drm_connector *connector; | |
1224 | struct drm_connector_state *conn_state; | |
1225 | int ret; | |
1226 | ||
1227 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1228 | if (ret) | |
1229 | return ret; | |
1230 | ||
fa3ab4c2 VS |
1231 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1232 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1233 | |
1234 | /* | |
1235 | * Changed connectors are already in @state, so only need to look at the | |
1236 | * current configuration. | |
1237 | */ | |
9a9f5ce8 | 1238 | drm_for_each_connector(connector, state->dev) { |
cc4ceb48 DV |
1239 | if (connector->state->crtc != crtc) |
1240 | continue; | |
1241 | ||
1242 | conn_state = drm_atomic_get_connector_state(state, connector); | |
1243 | if (IS_ERR(conn_state)) | |
1244 | return PTR_ERR(conn_state); | |
1245 | } | |
1246 | ||
1247 | return 0; | |
1248 | } | |
1249 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1250 | ||
e01e9f75 ML |
1251 | /** |
1252 | * drm_atomic_add_affected_planes - add planes for crtc | |
1253 | * @state: atomic state | |
1254 | * @crtc: DRM crtc | |
1255 | * | |
1256 | * This function walks the current configuration and adds all planes | |
1257 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1258 | * when an atomic commit also needs to check all currently enabled plane on | |
1259 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1260 | * to avoid special code to force-enable all planes. | |
1261 | * | |
1262 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1263 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1264 | * a CRTC will not reduce parallism of atomic updates. | |
1265 | * | |
1266 | * Returns: | |
1267 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1268 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1269 | * sequence must be restarted. All other errors are fatal. | |
1270 | */ | |
1271 | int | |
1272 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1273 | struct drm_crtc *crtc) | |
1274 | { | |
1275 | struct drm_plane *plane; | |
1276 | ||
1277 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1278 | ||
1279 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1280 | struct drm_plane_state *plane_state = | |
1281 | drm_atomic_get_plane_state(state, plane); | |
1282 | ||
1283 | if (IS_ERR(plane_state)) | |
1284 | return PTR_ERR(plane_state); | |
1285 | } | |
1286 | return 0; | |
1287 | } | |
1288 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1289 | ||
cc4ceb48 DV |
1290 | /** |
1291 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1292 | * @state: atomic state | |
1293 | * | |
1294 | * This function should be used by legacy entry points which don't understand | |
1295 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1296 | * the slowpath completed. |
cc4ceb48 DV |
1297 | */ |
1298 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1299 | { | |
1300 | int ret; | |
1301 | ||
1302 | retry: | |
1303 | drm_modeset_backoff(state->acquire_ctx); | |
1304 | ||
06eaae46 | 1305 | ret = drm_modeset_lock_all_ctx(state->dev, state->acquire_ctx); |
cc4ceb48 DV |
1306 | if (ret) |
1307 | goto retry; | |
1308 | } | |
1309 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1310 | ||
1311 | /** | |
1312 | * drm_atomic_check_only - check whether a given config would work | |
1313 | * @state: atomic configuration to check | |
1314 | * | |
1315 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1316 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1317 | * backoff dance and restart. All other errors are fatal. | |
1318 | * | |
1319 | * Returns: | |
1320 | * 0 on success, negative error code on failure. | |
1321 | */ | |
1322 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1323 | { | |
5e743737 RC |
1324 | struct drm_device *dev = state->dev; |
1325 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1326 | struct drm_plane *plane; |
1327 | struct drm_plane_state *plane_state; | |
1328 | struct drm_crtc *crtc; | |
1329 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1330 | int i, ret = 0; |
cc4ceb48 | 1331 | |
17a38d9c | 1332 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1333 | |
df63b999 ACO |
1334 | for_each_plane_in_state(state, plane, plane_state, i) { |
1335 | ret = drm_atomic_plane_check(plane, plane_state); | |
5e743737 | 1336 | if (ret) { |
9f4c97a2 VS |
1337 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1338 | plane->base.id, plane->name); | |
5e743737 RC |
1339 | return ret; |
1340 | } | |
1341 | } | |
1342 | ||
df63b999 ACO |
1343 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
1344 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
5e743737 | 1345 | if (ret) { |
fa3ab4c2 VS |
1346 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1347 | crtc->base.id, crtc->name); | |
5e743737 RC |
1348 | return ret; |
1349 | } | |
1350 | } | |
1351 | ||
cc4ceb48 | 1352 | if (config->funcs->atomic_check) |
5e743737 RC |
1353 | ret = config->funcs->atomic_check(state->dev, state); |
1354 | ||
d34f20d6 | 1355 | if (!state->allow_modeset) { |
df63b999 | 1356 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1357 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1358 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1359 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1360 | return -EINVAL; |
1361 | } | |
1362 | } | |
1363 | } | |
1364 | ||
5e743737 | 1365 | return ret; |
cc4ceb48 DV |
1366 | } |
1367 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1368 | ||
1369 | /** | |
1370 | * drm_atomic_commit - commit configuration atomically | |
1371 | * @state: atomic configuration to check | |
1372 | * | |
1373 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1374 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1375 | * backoff dance and restart. All other errors are fatal. | |
1376 | * | |
1377 | * Also note that on successful execution ownership of @state is transferred | |
1378 | * from the caller of this function to the function itself. The caller must not | |
1379 | * free or in any other way access @state. If the function fails then the caller | |
1380 | * must clean up @state itself. | |
1381 | * | |
1382 | * Returns: | |
1383 | * 0 on success, negative error code on failure. | |
1384 | */ | |
1385 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1386 | { | |
1387 | struct drm_mode_config *config = &state->dev->mode_config; | |
1388 | int ret; | |
1389 | ||
1390 | ret = drm_atomic_check_only(state); | |
1391 | if (ret) | |
1392 | return ret; | |
1393 | ||
17a38d9c | 1394 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1395 | |
1396 | return config->funcs->atomic_commit(state->dev, state, false); | |
1397 | } | |
1398 | EXPORT_SYMBOL(drm_atomic_commit); | |
1399 | ||
1400 | /** | |
b837ba0a | 1401 | * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit |
cc4ceb48 DV |
1402 | * @state: atomic configuration to check |
1403 | * | |
1404 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1405 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1406 | * backoff dance and restart. All other errors are fatal. | |
1407 | * | |
1408 | * Also note that on successful execution ownership of @state is transferred | |
1409 | * from the caller of this function to the function itself. The caller must not | |
1410 | * free or in any other way access @state. If the function fails then the caller | |
1411 | * must clean up @state itself. | |
1412 | * | |
1413 | * Returns: | |
1414 | * 0 on success, negative error code on failure. | |
1415 | */ | |
b837ba0a | 1416 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1417 | { |
1418 | struct drm_mode_config *config = &state->dev->mode_config; | |
1419 | int ret; | |
1420 | ||
1421 | ret = drm_atomic_check_only(state); | |
1422 | if (ret) | |
1423 | return ret; | |
1424 | ||
b837ba0a | 1425 | DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state); |
cc4ceb48 DV |
1426 | |
1427 | return config->funcs->atomic_commit(state->dev, state, true); | |
1428 | } | |
b837ba0a | 1429 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 RC |
1430 | |
1431 | /* | |
1432 | * The big monstor ioctl | |
1433 | */ | |
1434 | ||
1435 | static struct drm_pending_vblank_event *create_vblank_event( | |
1436 | struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data) | |
1437 | { | |
1438 | struct drm_pending_vblank_event *e = NULL; | |
2dd500f1 | 1439 | int ret; |
d34f20d6 RC |
1440 | |
1441 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
2dd500f1 DV |
1442 | if (!e) |
1443 | return NULL; | |
d34f20d6 RC |
1444 | |
1445 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
2dd500f1 | 1446 | e->event.base.length = sizeof(e->event); |
d34f20d6 | 1447 | e->event.user_data = user_data; |
d34f20d6 | 1448 | |
2dd500f1 DV |
1449 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); |
1450 | if (ret) { | |
1451 | kfree(e); | |
1452 | return NULL; | |
1453 | } | |
d34f20d6 | 1454 | |
2dd500f1 | 1455 | return e; |
d34f20d6 RC |
1456 | } |
1457 | ||
1458 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1459 | struct drm_mode_object *obj, struct drm_property *prop, | |
1460 | uint64_t prop_value) | |
1461 | { | |
1462 | struct drm_mode_object *ref; | |
1463 | int ret; | |
1464 | ||
1465 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1466 | return -EINVAL; | |
1467 | ||
1468 | switch (obj->type) { | |
1469 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1470 | struct drm_connector *connector = obj_to_connector(obj); | |
1471 | struct drm_connector_state *connector_state; | |
1472 | ||
1473 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1474 | if (IS_ERR(connector_state)) { | |
1475 | ret = PTR_ERR(connector_state); | |
1476 | break; | |
1477 | } | |
1478 | ||
1479 | ret = drm_atomic_connector_set_property(connector, | |
1480 | connector_state, prop, prop_value); | |
1481 | break; | |
1482 | } | |
1483 | case DRM_MODE_OBJECT_CRTC: { | |
1484 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1485 | struct drm_crtc_state *crtc_state; | |
1486 | ||
1487 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1488 | if (IS_ERR(crtc_state)) { | |
1489 | ret = PTR_ERR(crtc_state); | |
1490 | break; | |
1491 | } | |
1492 | ||
1493 | ret = drm_atomic_crtc_set_property(crtc, | |
1494 | crtc_state, prop, prop_value); | |
1495 | break; | |
1496 | } | |
1497 | case DRM_MODE_OBJECT_PLANE: { | |
1498 | struct drm_plane *plane = obj_to_plane(obj); | |
1499 | struct drm_plane_state *plane_state; | |
1500 | ||
1501 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1502 | if (IS_ERR(plane_state)) { | |
1503 | ret = PTR_ERR(plane_state); | |
1504 | break; | |
1505 | } | |
1506 | ||
1507 | ret = drm_atomic_plane_set_property(plane, | |
1508 | plane_state, prop, prop_value); | |
1509 | break; | |
1510 | } | |
1511 | default: | |
1512 | ret = -EINVAL; | |
1513 | break; | |
1514 | } | |
1515 | ||
1516 | drm_property_change_valid_put(prop, ref); | |
1517 | return ret; | |
1518 | } | |
1519 | ||
0f45c26f | 1520 | /** |
9744bf41 | 1521 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1522 | * |
1523 | * @dev: drm device to check. | |
1524 | * @plane_mask: plane mask for planes that were updated. | |
1525 | * @ret: return value, can be -EDEADLK for a retry. | |
1526 | * | |
1527 | * Before doing an update plane->old_fb is set to plane->fb, | |
1528 | * but before dropping the locks old_fb needs to be set to NULL | |
1529 | * and plane->fb updated. This is a common operation for each | |
1530 | * atomic update, so this call is split off as a helper. | |
1531 | */ | |
1532 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1533 | unsigned plane_mask, | |
1534 | int ret) | |
1535 | { | |
1536 | struct drm_plane *plane; | |
1537 | ||
1538 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1539 | * locks (ie. while it is still safe to deref plane->state). We | |
1540 | * need to do this here because the driver entry points cannot | |
1541 | * distinguish between legacy and atomic ioctls. | |
1542 | */ | |
1543 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1544 | if (ret == 0) { | |
1545 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1546 | if (new_fb) | |
1547 | drm_framebuffer_reference(new_fb); | |
1548 | plane->fb = new_fb; | |
1549 | plane->crtc = plane->state->crtc; | |
1550 | ||
1551 | if (plane->old_fb) | |
1552 | drm_framebuffer_unreference(plane->old_fb); | |
1553 | } | |
1554 | plane->old_fb = NULL; | |
1555 | } | |
1556 | } | |
1557 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1558 | ||
d34f20d6 RC |
1559 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
1560 | void *data, struct drm_file *file_priv) | |
1561 | { | |
1562 | struct drm_mode_atomic *arg = data; | |
1563 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
1564 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
1565 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
1566 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
1567 | unsigned int copied_objs, copied_props; | |
1568 | struct drm_atomic_state *state; | |
1569 | struct drm_modeset_acquire_ctx ctx; | |
1570 | struct drm_plane *plane; | |
df63b999 ACO |
1571 | struct drm_crtc *crtc; |
1572 | struct drm_crtc_state *crtc_state; | |
45723728 | 1573 | unsigned plane_mask; |
d34f20d6 RC |
1574 | int ret = 0; |
1575 | unsigned int i, j; | |
1576 | ||
1577 | /* disallow for drivers not supporting atomic: */ | |
1578 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1579 | return -EINVAL; | |
1580 | ||
1581 | /* disallow for userspace that has not enabled atomic cap (even | |
1582 | * though this may be a bit overkill, since legacy userspace | |
1583 | * wouldn't know how to call this ioctl) | |
1584 | */ | |
1585 | if (!file_priv->atomic) | |
1586 | return -EINVAL; | |
1587 | ||
1588 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
1589 | return -EINVAL; | |
1590 | ||
1591 | if (arg->reserved) | |
1592 | return -EINVAL; | |
1593 | ||
1594 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
1595 | !dev->mode_config.async_page_flip) | |
1596 | return -EINVAL; | |
1597 | ||
1598 | /* can't test and expect an event at the same time. */ | |
1599 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
1600 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1601 | return -EINVAL; | |
1602 | ||
1603 | drm_modeset_acquire_init(&ctx, 0); | |
1604 | ||
1605 | state = drm_atomic_state_alloc(dev); | |
1606 | if (!state) | |
1607 | return -ENOMEM; | |
1608 | ||
1609 | state->acquire_ctx = &ctx; | |
1610 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
1611 | ||
1612 | retry: | |
45723728 | 1613 | plane_mask = 0; |
d34f20d6 RC |
1614 | copied_objs = 0; |
1615 | copied_props = 0; | |
1616 | ||
1617 | for (i = 0; i < arg->count_objs; i++) { | |
1618 | uint32_t obj_id, count_props; | |
1619 | struct drm_mode_object *obj; | |
1620 | ||
1621 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
1622 | ret = -EFAULT; | |
ec9f932e | 1623 | goto out; |
d34f20d6 RC |
1624 | } |
1625 | ||
1626 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
b164d31f DA |
1627 | if (!obj) { |
1628 | ret = -ENOENT; | |
1629 | goto out; | |
1630 | } | |
1631 | ||
1632 | if (!obj->properties) { | |
1633 | drm_mode_object_unreference(obj); | |
d34f20d6 | 1634 | ret = -ENOENT; |
ec9f932e | 1635 | goto out; |
d34f20d6 RC |
1636 | } |
1637 | ||
d34f20d6 | 1638 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
b164d31f | 1639 | drm_mode_object_unreference(obj); |
d34f20d6 | 1640 | ret = -EFAULT; |
ec9f932e | 1641 | goto out; |
d34f20d6 RC |
1642 | } |
1643 | ||
1644 | copied_objs++; | |
1645 | ||
1646 | for (j = 0; j < count_props; j++) { | |
1647 | uint32_t prop_id; | |
1648 | uint64_t prop_value; | |
1649 | struct drm_property *prop; | |
1650 | ||
1651 | if (get_user(prop_id, props_ptr + copied_props)) { | |
b164d31f | 1652 | drm_mode_object_unreference(obj); |
d34f20d6 | 1653 | ret = -EFAULT; |
ec9f932e | 1654 | goto out; |
d34f20d6 RC |
1655 | } |
1656 | ||
1657 | prop = drm_property_find(dev, prop_id); | |
1658 | if (!prop) { | |
b164d31f | 1659 | drm_mode_object_unreference(obj); |
d34f20d6 | 1660 | ret = -ENOENT; |
ec9f932e | 1661 | goto out; |
d34f20d6 RC |
1662 | } |
1663 | ||
42c5814c GR |
1664 | if (copy_from_user(&prop_value, |
1665 | prop_values_ptr + copied_props, | |
1666 | sizeof(prop_value))) { | |
b164d31f | 1667 | drm_mode_object_unreference(obj); |
d34f20d6 | 1668 | ret = -EFAULT; |
ec9f932e | 1669 | goto out; |
d34f20d6 RC |
1670 | } |
1671 | ||
1672 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
b164d31f DA |
1673 | if (ret) { |
1674 | drm_mode_object_unreference(obj); | |
ec9f932e | 1675 | goto out; |
b164d31f | 1676 | } |
d34f20d6 RC |
1677 | |
1678 | copied_props++; | |
1679 | } | |
a9cc54ee | 1680 | |
c4749c9a ML |
1681 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
1682 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
1683 | plane = obj_to_plane(obj); |
1684 | plane_mask |= (1 << drm_plane_index(plane)); | |
1685 | plane->old_fb = plane->fb; | |
1686 | } | |
b164d31f | 1687 | drm_mode_object_unreference(obj); |
d34f20d6 RC |
1688 | } |
1689 | ||
1690 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
df63b999 | 1691 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
d34f20d6 RC |
1692 | struct drm_pending_vblank_event *e; |
1693 | ||
d34f20d6 RC |
1694 | e = create_vblank_event(dev, file_priv, arg->user_data); |
1695 | if (!e) { | |
1696 | ret = -ENOMEM; | |
ec9f932e | 1697 | goto out; |
d34f20d6 RC |
1698 | } |
1699 | ||
1700 | crtc_state->event = e; | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
c4749c9a ML |
1705 | /* |
1706 | * Unlike commit, check_only does not clean up state. | |
1707 | * Below we call drm_atomic_state_free for it. | |
1708 | */ | |
d34f20d6 | 1709 | ret = drm_atomic_check_only(state); |
d34f20d6 | 1710 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
b837ba0a | 1711 | ret = drm_atomic_nonblocking_commit(state); |
d34f20d6 RC |
1712 | } else { |
1713 | ret = drm_atomic_commit(state); | |
1714 | } | |
1715 | ||
ec9f932e | 1716 | out: |
0f45c26f | 1717 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 1718 | |
c4749c9a ML |
1719 | if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
1720 | /* | |
1721 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive, | |
1722 | * if they weren't, this code should be called on success | |
1723 | * for TEST_ONLY too. | |
1724 | */ | |
1725 | ||
1726 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1727 | if (!crtc_state->event) | |
1728 | continue; | |
1729 | ||
2dd500f1 | 1730 | drm_event_cancel_free(dev, &crtc_state->event->base); |
c4749c9a ML |
1731 | } |
1732 | } | |
1733 | ||
ec9f932e ML |
1734 | if (ret == -EDEADLK) { |
1735 | drm_atomic_state_clear(state); | |
1736 | drm_modeset_backoff(&ctx); | |
1737 | goto retry; | |
1738 | } | |
d34f20d6 | 1739 | |
c4749c9a | 1740 | if (ret || arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) |
ec9f932e | 1741 | drm_atomic_state_free(state); |
d34f20d6 RC |
1742 | |
1743 | drm_modeset_drop_locks(&ctx); | |
1744 | drm_modeset_acquire_fini(&ctx); | |
1745 | ||
1746 | return ret; | |
d34f20d6 | 1747 | } |