Commit | Line | Data |
---|---|---|
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 | ||
3b24f7d6 DV |
36 | static void crtc_commit_free(struct kref *kref) |
37 | { | |
38 | struct drm_crtc_commit *commit = | |
39 | container_of(kref, struct drm_crtc_commit, ref); | |
40 | ||
41 | kfree(commit); | |
42 | } | |
43 | ||
44 | void drm_crtc_commit_put(struct drm_crtc_commit *commit) | |
45 | { | |
46 | kref_put(&commit->ref, crtc_commit_free); | |
47 | } | |
48 | EXPORT_SYMBOL(drm_crtc_commit_put); | |
49 | ||
036ef573 ML |
50 | /** |
51 | * drm_atomic_state_default_release - | |
52 | * release memory initialized by drm_atomic_state_init | |
53 | * @state: atomic state | |
54 | * | |
55 | * Free all the memory allocated by drm_atomic_state_init. | |
56 | * This is useful for drivers that subclass the atomic state. | |
57 | */ | |
58 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
59 | { |
60 | kfree(state->connectors); | |
cc4ceb48 | 61 | kfree(state->crtcs); |
cc4ceb48 | 62 | kfree(state->planes); |
cc4ceb48 | 63 | } |
036ef573 | 64 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
65 | |
66 | /** | |
036ef573 | 67 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 68 | * @dev: DRM device |
036ef573 | 69 | * @state: atomic state |
cc4ceb48 | 70 | * |
036ef573 ML |
71 | * Default implementation for filling in a new atomic state. |
72 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 73 | */ |
036ef573 ML |
74 | int |
75 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 76 | { |
d34f20d6 RC |
77 | /* TODO legacy paths should maybe do a better job about |
78 | * setting this appropriately? | |
79 | */ | |
80 | state->allow_modeset = true; | |
81 | ||
cc4ceb48 DV |
82 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
83 | sizeof(*state->crtcs), GFP_KERNEL); | |
84 | if (!state->crtcs) | |
85 | goto fail; | |
cc4ceb48 DV |
86 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
87 | sizeof(*state->planes), GFP_KERNEL); | |
88 | if (!state->planes) | |
89 | goto fail; | |
cc4ceb48 DV |
90 | |
91 | state->dev = dev; | |
92 | ||
036ef573 | 93 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 94 | |
036ef573 | 95 | return 0; |
cc4ceb48 | 96 | fail: |
036ef573 ML |
97 | drm_atomic_state_default_release(state); |
98 | return -ENOMEM; | |
99 | } | |
100 | EXPORT_SYMBOL(drm_atomic_state_init); | |
101 | ||
102 | /** | |
103 | * drm_atomic_state_alloc - allocate atomic state | |
104 | * @dev: DRM device | |
105 | * | |
106 | * This allocates an empty atomic state to track updates. | |
107 | */ | |
108 | struct drm_atomic_state * | |
109 | drm_atomic_state_alloc(struct drm_device *dev) | |
110 | { | |
111 | struct drm_mode_config *config = &dev->mode_config; | |
112 | struct drm_atomic_state *state; | |
113 | ||
114 | if (!config->funcs->atomic_state_alloc) { | |
115 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
116 | if (!state) | |
117 | return NULL; | |
118 | if (drm_atomic_state_init(dev, state) < 0) { | |
119 | kfree(state); | |
120 | return NULL; | |
121 | } | |
122 | return state; | |
123 | } | |
cc4ceb48 | 124 | |
036ef573 | 125 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
126 | } |
127 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
128 | ||
129 | /** | |
036ef573 | 130 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
131 | * @state: atomic state |
132 | * | |
036ef573 ML |
133 | * Default implementation for clearing atomic state. |
134 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 135 | */ |
036ef573 | 136 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
137 | { |
138 | struct drm_device *dev = state->dev; | |
6f75cea6 | 139 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
140 | int i; |
141 | ||
17a38d9c | 142 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 143 | |
f52b69f1 | 144 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 145 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
146 | |
147 | if (!connector) | |
148 | continue; | |
149 | ||
d2307dea | 150 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
151 | state->connectors[i].state); |
152 | state->connectors[i].ptr = NULL; | |
153 | state->connectors[i].state = NULL; | |
b164d31f | 154 | drm_connector_unreference(connector); |
cc4ceb48 DV |
155 | } |
156 | ||
6f75cea6 | 157 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 158 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
159 | |
160 | if (!crtc) | |
161 | continue; | |
162 | ||
163 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 164 | state->crtcs[i].state); |
3b24f7d6 DV |
165 | |
166 | if (state->crtcs[i].commit) { | |
167 | kfree(state->crtcs[i].commit->event); | |
168 | state->crtcs[i].commit->event = NULL; | |
169 | drm_crtc_commit_put(state->crtcs[i].commit); | |
170 | } | |
171 | ||
172 | state->crtcs[i].commit = NULL; | |
5d943aa6 DV |
173 | state->crtcs[i].ptr = NULL; |
174 | state->crtcs[i].state = NULL; | |
cc4ceb48 DV |
175 | } |
176 | ||
6f75cea6 | 177 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 178 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
179 | |
180 | if (!plane) | |
181 | continue; | |
182 | ||
183 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
184 | state->planes[i].state); |
185 | state->planes[i].ptr = NULL; | |
186 | state->planes[i].state = NULL; | |
cc4ceb48 DV |
187 | } |
188 | } | |
036ef573 ML |
189 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
190 | ||
191 | /** | |
192 | * drm_atomic_state_clear - clear state object | |
193 | * @state: atomic state | |
194 | * | |
195 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
196 | * all locks. So someone else could sneak in and change the current modeset | |
197 | * configuration. Which means that all the state assembled in @state is no | |
198 | * longer an atomic update to the current state, but to some arbitrary earlier | |
199 | * state. Which could break assumptions the driver's ->atomic_check likely | |
200 | * relies on. | |
201 | * | |
202 | * Hence we must clear all cached state and completely start over, using this | |
203 | * function. | |
204 | */ | |
205 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
206 | { | |
207 | struct drm_device *dev = state->dev; | |
208 | struct drm_mode_config *config = &dev->mode_config; | |
209 | ||
210 | if (config->funcs->atomic_state_clear) | |
211 | config->funcs->atomic_state_clear(state); | |
212 | else | |
213 | drm_atomic_state_default_clear(state); | |
214 | } | |
cc4ceb48 DV |
215 | EXPORT_SYMBOL(drm_atomic_state_clear); |
216 | ||
217 | /** | |
218 | * drm_atomic_state_free - free all memory for an atomic state | |
219 | * @state: atomic state to deallocate | |
220 | * | |
221 | * This frees all memory associated with an atomic state, including all the | |
222 | * per-object state for planes, crtcs and connectors. | |
223 | */ | |
224 | void drm_atomic_state_free(struct drm_atomic_state *state) | |
225 | { | |
036ef573 ML |
226 | struct drm_device *dev; |
227 | struct drm_mode_config *config; | |
228 | ||
a0211bb4 ACO |
229 | if (!state) |
230 | return; | |
231 | ||
036ef573 ML |
232 | dev = state->dev; |
233 | config = &dev->mode_config; | |
234 | ||
cc4ceb48 DV |
235 | drm_atomic_state_clear(state); |
236 | ||
17a38d9c | 237 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 238 | |
036ef573 ML |
239 | if (config->funcs->atomic_state_free) { |
240 | config->funcs->atomic_state_free(state); | |
241 | } else { | |
242 | drm_atomic_state_default_release(state); | |
243 | kfree(state); | |
244 | } | |
cc4ceb48 DV |
245 | } |
246 | EXPORT_SYMBOL(drm_atomic_state_free); | |
247 | ||
248 | /** | |
249 | * drm_atomic_get_crtc_state - get crtc state | |
250 | * @state: global atomic state object | |
251 | * @crtc: crtc to get state object for | |
252 | * | |
253 | * This function returns the crtc state for the given crtc, allocating it if | |
254 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
255 | * is consistent. | |
256 | * | |
257 | * Returns: | |
258 | * | |
259 | * Either the allocated state or the error code encoded into the pointer. When | |
260 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
261 | * entire atomic sequence must be restarted. All other errors are fatal. | |
262 | */ | |
263 | struct drm_crtc_state * | |
264 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
265 | struct drm_crtc *crtc) | |
266 | { | |
1b26a5e1 | 267 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
268 | struct drm_crtc_state *crtc_state; |
269 | ||
7f4eaa89 ML |
270 | WARN_ON(!state->acquire_ctx); |
271 | ||
1b26a5e1 ML |
272 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
273 | if (crtc_state) | |
274 | return crtc_state; | |
cc4ceb48 DV |
275 | |
276 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
277 | if (ret) | |
278 | return ERR_PTR(ret); | |
279 | ||
280 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
281 | if (!crtc_state) | |
282 | return ERR_PTR(-ENOMEM); | |
283 | ||
5d943aa6 DV |
284 | state->crtcs[index].state = crtc_state; |
285 | state->crtcs[index].ptr = crtc; | |
cc4ceb48 DV |
286 | crtc_state->state = state; |
287 | ||
fa3ab4c2 VS |
288 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
289 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
290 | |
291 | return crtc_state; | |
292 | } | |
293 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
294 | ||
819364da DS |
295 | /** |
296 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
297 | * @state: the CRTC whose incoming state to update | |
298 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
299 | * | |
300 | * Set a mode (originating from the kernel) on the desired CRTC state. Does | |
301 | * not change any other state properties, including enable, active, or | |
302 | * mode_changed. | |
303 | * | |
304 | * RETURNS: | |
305 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
306 | */ | |
307 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
308 | struct drm_display_mode *mode) | |
309 | { | |
99cf4a29 DS |
310 | struct drm_mode_modeinfo umode; |
311 | ||
819364da DS |
312 | /* Early return for no change. */ |
313 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
314 | return 0; | |
315 | ||
5f911905 | 316 | drm_property_unreference_blob(state->mode_blob); |
99cf4a29 DS |
317 | state->mode_blob = NULL; |
318 | ||
819364da | 319 | if (mode) { |
99cf4a29 DS |
320 | drm_mode_convert_to_umode(&umode, mode); |
321 | state->mode_blob = | |
322 | drm_property_create_blob(state->crtc->dev, | |
323 | sizeof(umode), | |
324 | &umode); | |
325 | if (IS_ERR(state->mode_blob)) | |
326 | return PTR_ERR(state->mode_blob); | |
327 | ||
819364da DS |
328 | drm_mode_copy(&state->mode, mode); |
329 | state->enable = true; | |
330 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
331 | mode->name, state); | |
332 | } else { | |
333 | memset(&state->mode, 0, sizeof(state->mode)); | |
334 | state->enable = false; | |
335 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
336 | state); | |
337 | } | |
338 | ||
339 | return 0; | |
340 | } | |
341 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
342 | ||
955f3c33 DS |
343 | /** |
344 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
345 | * @state: the CRTC whose incoming state to update | |
346 | * @blob: pointer to blob property to use for mode | |
347 | * | |
348 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
349 | * This function will take a reference on the blob property for the CRTC state, | |
350 | * and release the reference held on the state's existing mode property, if any | |
351 | * was set. | |
352 | * | |
353 | * RETURNS: | |
354 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
355 | */ | |
356 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
357 | struct drm_property_blob *blob) | |
358 | { | |
359 | if (blob == state->mode_blob) | |
360 | return 0; | |
361 | ||
5f911905 | 362 | drm_property_unreference_blob(state->mode_blob); |
955f3c33 DS |
363 | state->mode_blob = NULL; |
364 | ||
6709887c TV |
365 | memset(&state->mode, 0, sizeof(state->mode)); |
366 | ||
955f3c33 DS |
367 | if (blob) { |
368 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
369 | drm_mode_convert_umode(&state->mode, | |
370 | (const struct drm_mode_modeinfo *) | |
371 | blob->data)) | |
372 | return -EINVAL; | |
373 | ||
374 | state->mode_blob = drm_property_reference_blob(blob); | |
375 | state->enable = true; | |
376 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
377 | state->mode.name, state); | |
378 | } else { | |
955f3c33 DS |
379 | state->enable = false; |
380 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
381 | state); | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
387 | ||
5488dc16 LL |
388 | /** |
389 | * drm_atomic_replace_property_blob - replace a blob property | |
390 | * @blob: a pointer to the member blob to be replaced | |
391 | * @new_blob: the new blob to replace with | |
5488dc16 LL |
392 | * @replaced: whether the blob has been replaced |
393 | * | |
394 | * RETURNS: | |
395 | * Zero on success, error code on failure | |
396 | */ | |
397 | static void | |
398 | drm_atomic_replace_property_blob(struct drm_property_blob **blob, | |
399 | struct drm_property_blob *new_blob, | |
400 | bool *replaced) | |
401 | { | |
402 | struct drm_property_blob *old_blob = *blob; | |
403 | ||
404 | if (old_blob == new_blob) | |
405 | return; | |
406 | ||
f35cbe6a | 407 | drm_property_unreference_blob(old_blob); |
5488dc16 LL |
408 | if (new_blob) |
409 | drm_property_reference_blob(new_blob); | |
410 | *blob = new_blob; | |
411 | *replaced = true; | |
412 | ||
413 | return; | |
414 | } | |
415 | ||
416 | static int | |
417 | drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc, | |
418 | struct drm_property_blob **blob, | |
419 | uint64_t blob_id, | |
420 | ssize_t expected_size, | |
421 | bool *replaced) | |
422 | { | |
423 | struct drm_device *dev = crtc->dev; | |
424 | struct drm_property_blob *new_blob = NULL; | |
425 | ||
426 | if (blob_id != 0) { | |
427 | new_blob = drm_property_lookup_blob(dev, blob_id); | |
428 | if (new_blob == NULL) | |
429 | return -EINVAL; | |
430 | if (expected_size > 0 && expected_size != new_blob->length) | |
431 | return -EINVAL; | |
432 | } | |
433 | ||
434 | drm_atomic_replace_property_blob(blob, new_blob, replaced); | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
40ecc694 RC |
439 | /** |
440 | * drm_atomic_crtc_set_property - set property on CRTC | |
441 | * @crtc: the drm CRTC to set a property on | |
442 | * @state: the state object to update with the new property value | |
443 | * @property: the property to set | |
444 | * @val: the new property value | |
445 | * | |
446 | * Use this instead of calling crtc->atomic_set_property directly. | |
447 | * This function handles generic/core properties and calls out to | |
448 | * driver's ->atomic_set_property() for driver properties. To ensure | |
449 | * consistent behavior you must call this function rather than the | |
450 | * driver hook directly. | |
451 | * | |
452 | * RETURNS: | |
453 | * Zero on success, error code on failure | |
454 | */ | |
455 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
456 | struct drm_crtc_state *state, struct drm_property *property, | |
457 | uint64_t val) | |
458 | { | |
eab3bbef DV |
459 | struct drm_device *dev = crtc->dev; |
460 | struct drm_mode_config *config = &dev->mode_config; | |
5488dc16 | 461 | bool replaced = false; |
955f3c33 | 462 | int ret; |
eab3bbef | 463 | |
27798365 | 464 | if (property == config->prop_active) |
eab3bbef | 465 | state->active = val; |
955f3c33 DS |
466 | else if (property == config->prop_mode_id) { |
467 | struct drm_property_blob *mode = | |
468 | drm_property_lookup_blob(dev, val); | |
469 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
5f911905 | 470 | drm_property_unreference_blob(mode); |
955f3c33 | 471 | return ret; |
5488dc16 LL |
472 | } else if (property == config->degamma_lut_property) { |
473 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
474 | &state->degamma_lut, | |
475 | val, | |
476 | -1, | |
477 | &replaced); | |
add1fa75 | 478 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
479 | return ret; |
480 | } else if (property == config->ctm_property) { | |
481 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
482 | &state->ctm, | |
483 | val, | |
484 | sizeof(struct drm_color_ctm), | |
485 | &replaced); | |
add1fa75 | 486 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
487 | return ret; |
488 | } else if (property == config->gamma_lut_property) { | |
489 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
490 | &state->gamma_lut, | |
491 | val, | |
492 | -1, | |
493 | &replaced); | |
add1fa75 | 494 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
495 | return ret; |
496 | } else if (crtc->funcs->atomic_set_property) | |
40ecc694 | 497 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
498 | else |
499 | return -EINVAL; | |
500 | ||
501 | return 0; | |
40ecc694 RC |
502 | } |
503 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
504 | ||
c0714fc9 DV |
505 | /** |
506 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
507 | * @crtc: the drm CRTC to set a property on | |
508 | * @state: the state object to get the property value from | |
509 | * @property: the property to set | |
510 | * @val: return location for the property value | |
511 | * | |
ac9c9256 RC |
512 | * This function handles generic/core properties and calls out to |
513 | * driver's ->atomic_get_property() for driver properties. To ensure | |
514 | * consistent behavior you must call this function rather than the | |
515 | * driver hook directly. | |
c0714fc9 DV |
516 | * |
517 | * RETURNS: | |
518 | * Zero on success, error code on failure | |
ac9c9256 | 519 | */ |
bf22f3be GT |
520 | static int |
521 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
522 | const struct drm_crtc_state *state, |
523 | struct drm_property *property, uint64_t *val) | |
524 | { | |
8f164ce4 DS |
525 | struct drm_device *dev = crtc->dev; |
526 | struct drm_mode_config *config = &dev->mode_config; | |
527 | ||
528 | if (property == config->prop_active) | |
529 | *val = state->active; | |
955f3c33 DS |
530 | else if (property == config->prop_mode_id) |
531 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
5488dc16 LL |
532 | else if (property == config->degamma_lut_property) |
533 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
534 | else if (property == config->ctm_property) | |
535 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
536 | else if (property == config->gamma_lut_property) | |
537 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
8f164ce4 | 538 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 539 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
540 | else |
541 | return -EINVAL; | |
542 | ||
543 | return 0; | |
ac9c9256 | 544 | } |
ac9c9256 | 545 | |
5e743737 RC |
546 | /** |
547 | * drm_atomic_crtc_check - check crtc state | |
548 | * @crtc: crtc to check | |
549 | * @state: crtc state to check | |
550 | * | |
551 | * Provides core sanity checks for crtc state. | |
552 | * | |
553 | * RETURNS: | |
554 | * Zero on success, error code on failure | |
555 | */ | |
556 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
557 | struct drm_crtc_state *state) | |
558 | { | |
559 | /* NOTE: we explicitly don't enforce constraints such as primary | |
560 | * layer covering entire screen, since that is something we want | |
561 | * to allow (on hw that supports it). For hw that does not, it | |
562 | * should be checked in driver's crtc->atomic_check() vfunc. | |
563 | * | |
564 | * TODO: Add generic modeset state checks once we support those. | |
565 | */ | |
eab3bbef DV |
566 | |
567 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
568 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
569 | crtc->base.id, crtc->name); | |
eab3bbef DV |
570 | return -EINVAL; |
571 | } | |
572 | ||
99cf4a29 DS |
573 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
574 | * as this is a kernel-internal detail that userspace should never | |
575 | * be able to trigger. */ | |
576 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
577 | WARN_ON(state->enable && !state->mode_blob)) { | |
fa3ab4c2 VS |
578 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
579 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
580 | return -EINVAL; |
581 | } | |
582 | ||
583 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
584 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
585 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
586 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
587 | return -EINVAL; |
588 | } | |
589 | ||
4cba6850 DV |
590 | /* |
591 | * Reject event generation for when a CRTC is off and stays off. | |
592 | * It wouldn't be hard to implement this, but userspace has a track | |
593 | * record of happily burning through 100% cpu (or worse, crash) when the | |
594 | * display pipe is suspended. To avoid all that fun just reject updates | |
595 | * that ask for events since likely that indicates a bug in the | |
596 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
597 | * and legacy page_flip IOCTL which also reject service on a disabled | |
598 | * pipe. | |
599 | */ | |
600 | if (state->event && !state->active && !crtc->state->active) { | |
601 | DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n", | |
602 | crtc->base.id); | |
603 | return -EINVAL; | |
604 | } | |
605 | ||
5e743737 RC |
606 | return 0; |
607 | } | |
608 | ||
cc4ceb48 DV |
609 | /** |
610 | * drm_atomic_get_plane_state - get plane state | |
611 | * @state: global atomic state object | |
612 | * @plane: plane to get state object for | |
613 | * | |
614 | * This function returns the plane state for the given plane, allocating it if | |
615 | * needed. It will also grab the relevant plane lock to make sure that the state | |
616 | * is consistent. | |
617 | * | |
618 | * Returns: | |
619 | * | |
620 | * Either the allocated state or the error code encoded into the pointer. When | |
621 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
622 | * entire atomic sequence must be restarted. All other errors are fatal. | |
623 | */ | |
624 | struct drm_plane_state * | |
625 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
626 | struct drm_plane *plane) | |
627 | { | |
1b26a5e1 | 628 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
629 | struct drm_plane_state *plane_state; |
630 | ||
7f4eaa89 ML |
631 | WARN_ON(!state->acquire_ctx); |
632 | ||
1b26a5e1 ML |
633 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
634 | if (plane_state) | |
635 | return plane_state; | |
cc4ceb48 | 636 | |
4d02e2de | 637 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
638 | if (ret) |
639 | return ERR_PTR(ret); | |
640 | ||
641 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
642 | if (!plane_state) | |
643 | return ERR_PTR(-ENOMEM); | |
644 | ||
b8b5342b DV |
645 | state->planes[index].state = plane_state; |
646 | state->planes[index].ptr = plane; | |
cc4ceb48 DV |
647 | plane_state->state = state; |
648 | ||
9f4c97a2 VS |
649 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
650 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
651 | |
652 | if (plane_state->crtc) { | |
653 | struct drm_crtc_state *crtc_state; | |
654 | ||
655 | crtc_state = drm_atomic_get_crtc_state(state, | |
656 | plane_state->crtc); | |
657 | if (IS_ERR(crtc_state)) | |
658 | return ERR_CAST(crtc_state); | |
659 | } | |
660 | ||
661 | return plane_state; | |
662 | } | |
663 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
664 | ||
40ecc694 RC |
665 | /** |
666 | * drm_atomic_plane_set_property - set property on plane | |
667 | * @plane: the drm plane to set a property on | |
668 | * @state: the state object to update with the new property value | |
669 | * @property: the property to set | |
670 | * @val: the new property value | |
671 | * | |
672 | * Use this instead of calling plane->atomic_set_property directly. | |
673 | * This function handles generic/core properties and calls out to | |
674 | * driver's ->atomic_set_property() for driver properties. To ensure | |
675 | * consistent behavior you must call this function rather than the | |
676 | * driver hook directly. | |
677 | * | |
678 | * RETURNS: | |
679 | * Zero on success, error code on failure | |
680 | */ | |
681 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
682 | struct drm_plane_state *state, struct drm_property *property, | |
683 | uint64_t val) | |
684 | { | |
6b4959f4 RC |
685 | struct drm_device *dev = plane->dev; |
686 | struct drm_mode_config *config = &dev->mode_config; | |
687 | ||
688 | if (property == config->prop_fb_id) { | |
689 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
690 | drm_atomic_set_fb_for_plane(state, fb); | |
691 | if (fb) | |
692 | drm_framebuffer_unreference(fb); | |
693 | } else if (property == config->prop_crtc_id) { | |
694 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
695 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
696 | } else if (property == config->prop_crtc_x) { | |
697 | state->crtc_x = U642I64(val); | |
698 | } else if (property == config->prop_crtc_y) { | |
699 | state->crtc_y = U642I64(val); | |
700 | } else if (property == config->prop_crtc_w) { | |
701 | state->crtc_w = val; | |
702 | } else if (property == config->prop_crtc_h) { | |
703 | state->crtc_h = val; | |
704 | } else if (property == config->prop_src_x) { | |
705 | state->src_x = val; | |
706 | } else if (property == config->prop_src_y) { | |
707 | state->src_y = val; | |
708 | } else if (property == config->prop_src_w) { | |
709 | state->src_w = val; | |
710 | } else if (property == config->prop_src_h) { | |
711 | state->src_h = val; | |
1da30627 MR |
712 | } else if (property == config->rotation_property) { |
713 | state->rotation = val; | |
44d1240d MS |
714 | } else if (property == plane->zpos_property) { |
715 | state->zpos = val; | |
6b4959f4 RC |
716 | } else if (plane->funcs->atomic_set_property) { |
717 | return plane->funcs->atomic_set_property(plane, state, | |
718 | property, val); | |
719 | } else { | |
720 | return -EINVAL; | |
721 | } | |
722 | ||
723 | return 0; | |
40ecc694 RC |
724 | } |
725 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
726 | ||
c0714fc9 DV |
727 | /** |
728 | * drm_atomic_plane_get_property - get property value from plane state | |
729 | * @plane: the drm plane to set a property on | |
730 | * @state: the state object to get the property value from | |
731 | * @property: the property to set | |
732 | * @val: return location for the property value | |
733 | * | |
ac9c9256 RC |
734 | * This function handles generic/core properties and calls out to |
735 | * driver's ->atomic_get_property() for driver properties. To ensure | |
736 | * consistent behavior you must call this function rather than the | |
737 | * driver hook directly. | |
c0714fc9 DV |
738 | * |
739 | * RETURNS: | |
740 | * Zero on success, error code on failure | |
ac9c9256 | 741 | */ |
a97df1cc DV |
742 | static int |
743 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
744 | const struct drm_plane_state *state, |
745 | struct drm_property *property, uint64_t *val) | |
746 | { | |
6b4959f4 RC |
747 | struct drm_device *dev = plane->dev; |
748 | struct drm_mode_config *config = &dev->mode_config; | |
749 | ||
750 | if (property == config->prop_fb_id) { | |
751 | *val = (state->fb) ? state->fb->base.id : 0; | |
752 | } else if (property == config->prop_crtc_id) { | |
753 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
754 | } else if (property == config->prop_crtc_x) { | |
755 | *val = I642U64(state->crtc_x); | |
756 | } else if (property == config->prop_crtc_y) { | |
757 | *val = I642U64(state->crtc_y); | |
758 | } else if (property == config->prop_crtc_w) { | |
759 | *val = state->crtc_w; | |
760 | } else if (property == config->prop_crtc_h) { | |
761 | *val = state->crtc_h; | |
762 | } else if (property == config->prop_src_x) { | |
763 | *val = state->src_x; | |
764 | } else if (property == config->prop_src_y) { | |
765 | *val = state->src_y; | |
766 | } else if (property == config->prop_src_w) { | |
767 | *val = state->src_w; | |
768 | } else if (property == config->prop_src_h) { | |
769 | *val = state->src_h; | |
4cda09ca TU |
770 | } else if (property == config->rotation_property) { |
771 | *val = state->rotation; | |
44d1240d MS |
772 | } else if (property == plane->zpos_property) { |
773 | *val = state->zpos; | |
6b4959f4 | 774 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 775 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
776 | } else { |
777 | return -EINVAL; | |
778 | } | |
779 | ||
780 | return 0; | |
ac9c9256 | 781 | } |
ac9c9256 | 782 | |
f8aeb41c DV |
783 | static bool |
784 | plane_switching_crtc(struct drm_atomic_state *state, | |
785 | struct drm_plane *plane, | |
786 | struct drm_plane_state *plane_state) | |
787 | { | |
788 | if (!plane->state->crtc || !plane_state->crtc) | |
789 | return false; | |
790 | ||
791 | if (plane->state->crtc == plane_state->crtc) | |
792 | return false; | |
793 | ||
794 | /* This could be refined, but currently there's no helper or driver code | |
795 | * to implement direct switching of active planes nor userspace to take | |
796 | * advantage of more direct plane switching without the intermediate | |
797 | * full OFF state. | |
798 | */ | |
799 | return true; | |
800 | } | |
801 | ||
5e743737 RC |
802 | /** |
803 | * drm_atomic_plane_check - check plane state | |
804 | * @plane: plane to check | |
805 | * @state: plane state to check | |
806 | * | |
807 | * Provides core sanity checks for plane state. | |
808 | * | |
809 | * RETURNS: | |
810 | * Zero on success, error code on failure | |
811 | */ | |
812 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
813 | struct drm_plane_state *state) | |
814 | { | |
815 | unsigned int fb_width, fb_height; | |
ead8610d | 816 | int ret; |
5e743737 RC |
817 | |
818 | /* either *both* CRTC and FB must be set, or neither */ | |
819 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 820 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
821 | return -EINVAL; |
822 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 823 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
824 | return -EINVAL; |
825 | } | |
826 | ||
827 | /* if disabled, we don't care about the rest of the state: */ | |
828 | if (!state->crtc) | |
829 | return 0; | |
830 | ||
831 | /* Check whether this plane is usable on this CRTC */ | |
832 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 833 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
834 | return -EINVAL; |
835 | } | |
836 | ||
837 | /* Check whether this plane supports the fb pixel format. */ | |
ead8610d LP |
838 | ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format); |
839 | if (ret) { | |
d3828147 | 840 | char *format_name = drm_get_format_name(state->fb->pixel_format); |
90844f00 EE |
841 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", format_name); |
842 | kfree(format_name); | |
ead8610d | 843 | return ret; |
5e743737 RC |
844 | } |
845 | ||
846 | /* Give drivers some help against integer overflows */ | |
847 | if (state->crtc_w > INT_MAX || | |
848 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
849 | state->crtc_h > INT_MAX || | |
850 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
851 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
852 | state->crtc_w, state->crtc_h, | |
853 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
854 | return -ERANGE; |
855 | } | |
856 | ||
857 | fb_width = state->fb->width << 16; | |
858 | fb_height = state->fb->height << 16; | |
859 | ||
860 | /* Make sure source coordinates are inside the fb. */ | |
861 | if (state->src_w > fb_width || | |
862 | state->src_x > fb_width - state->src_w || | |
863 | state->src_h > fb_height || | |
864 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
865 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
866 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
867 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
868 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
869 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
870 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
871 | return -ENOSPC; |
872 | } | |
873 | ||
f8aeb41c | 874 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
875 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
876 | plane->base.id, plane->name); | |
f8aeb41c DV |
877 | return -EINVAL; |
878 | } | |
879 | ||
5e743737 RC |
880 | return 0; |
881 | } | |
882 | ||
cc4ceb48 DV |
883 | /** |
884 | * drm_atomic_get_connector_state - get connector state | |
885 | * @state: global atomic state object | |
886 | * @connector: connector to get state object for | |
887 | * | |
888 | * This function returns the connector state for the given connector, | |
889 | * allocating it if needed. It will also grab the relevant connector lock to | |
890 | * make sure that the state is consistent. | |
891 | * | |
892 | * Returns: | |
893 | * | |
894 | * Either the allocated state or the error code encoded into the pointer. When | |
895 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
896 | * entire atomic sequence must be restarted. All other errors are fatal. | |
897 | */ | |
898 | struct drm_connector_state * | |
899 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
900 | struct drm_connector *connector) | |
901 | { | |
902 | int ret, index; | |
903 | struct drm_mode_config *config = &connector->dev->mode_config; | |
904 | struct drm_connector_state *connector_state; | |
905 | ||
7f4eaa89 ML |
906 | WARN_ON(!state->acquire_ctx); |
907 | ||
c7eb76f4 DV |
908 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
909 | if (ret) | |
910 | return ERR_PTR(ret); | |
911 | ||
cc4ceb48 DV |
912 | index = drm_connector_index(connector); |
913 | ||
f52b69f1 | 914 | if (index >= state->num_connector) { |
63e83c1d | 915 | struct __drm_connnectors_state *c; |
5fff80bb ML |
916 | int alloc = max(index + 1, config->num_connector); |
917 | ||
918 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
919 | if (!c) | |
920 | return ERR_PTR(-ENOMEM); | |
921 | ||
922 | state->connectors = c; | |
923 | memset(&state->connectors[state->num_connector], 0, | |
924 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
925 | ||
5fff80bb | 926 | state->num_connector = alloc; |
f52b69f1 DV |
927 | } |
928 | ||
63e83c1d DV |
929 | if (state->connectors[index].state) |
930 | return state->connectors[index].state; | |
cc4ceb48 | 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); |
63e83c1d DV |
937 | state->connectors[index].state = connector_state; |
938 | state->connectors[index].ptr = connector; | |
cc4ceb48 DV |
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 | ||
e2d800a3 CW |
1171 | if (conn_state->crtc == crtc) |
1172 | return 0; | |
1173 | ||
1174 | if (conn_state->crtc) { | |
4cd9fa52 ML |
1175 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, |
1176 | conn_state->crtc); | |
1177 | ||
1178 | crtc_state->connector_mask &= | |
1179 | ~(1 << drm_connector_index(conn_state->connector)); | |
e2d800a3 CW |
1180 | |
1181 | drm_connector_unreference(conn_state->connector); | |
1182 | conn_state->crtc = NULL; | |
4cd9fa52 ML |
1183 | } |
1184 | ||
cc4ceb48 DV |
1185 | if (crtc) { |
1186 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1187 | if (IS_ERR(crtc_state)) | |
1188 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1189 | |
1190 | crtc_state->connector_mask |= | |
1191 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 | 1192 | |
e2d800a3 CW |
1193 | drm_connector_reference(conn_state->connector); |
1194 | conn_state->crtc = crtc; | |
cc4ceb48 | 1195 | |
fa3ab4c2 VS |
1196 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1197 | conn_state, crtc->base.id, crtc->name); | |
e2d800a3 | 1198 | } else { |
17a38d9c DV |
1199 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1200 | conn_state); | |
e2d800a3 | 1201 | } |
cc4ceb48 DV |
1202 | |
1203 | return 0; | |
1204 | } | |
1205 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1206 | ||
1207 | /** | |
1208 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1209 | * @state: atomic state | |
1210 | * @crtc: DRM crtc | |
1211 | * | |
1212 | * This function walks the current configuration and adds all connectors | |
1213 | * currently using @crtc to the atomic configuration @state. Note that this | |
1214 | * function must acquire the connection mutex. This can potentially cause | |
1215 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1216 | * drivers and helpers should only call this when really needed (e.g. when a | |
1217 | * full modeset needs to happen due to some change). | |
1218 | * | |
1219 | * Returns: | |
1220 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1221 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1222 | * sequence must be restarted. All other errors are fatal. | |
1223 | */ | |
1224 | int | |
1225 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1226 | struct drm_crtc *crtc) | |
1227 | { | |
1228 | struct drm_mode_config *config = &state->dev->mode_config; | |
1229 | struct drm_connector *connector; | |
1230 | struct drm_connector_state *conn_state; | |
1231 | int ret; | |
1232 | ||
1233 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1234 | if (ret) | |
1235 | return ret; | |
1236 | ||
fa3ab4c2 VS |
1237 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1238 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1239 | |
1240 | /* | |
1241 | * Changed connectors are already in @state, so only need to look at the | |
1242 | * current configuration. | |
1243 | */ | |
9a9f5ce8 | 1244 | drm_for_each_connector(connector, state->dev) { |
cc4ceb48 DV |
1245 | if (connector->state->crtc != crtc) |
1246 | continue; | |
1247 | ||
1248 | conn_state = drm_atomic_get_connector_state(state, connector); | |
1249 | if (IS_ERR(conn_state)) | |
1250 | return PTR_ERR(conn_state); | |
1251 | } | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1256 | ||
e01e9f75 ML |
1257 | /** |
1258 | * drm_atomic_add_affected_planes - add planes for crtc | |
1259 | * @state: atomic state | |
1260 | * @crtc: DRM crtc | |
1261 | * | |
1262 | * This function walks the current configuration and adds all planes | |
1263 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1264 | * when an atomic commit also needs to check all currently enabled plane on | |
1265 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1266 | * to avoid special code to force-enable all planes. | |
1267 | * | |
1268 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1269 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1270 | * a CRTC will not reduce parallism of atomic updates. | |
1271 | * | |
1272 | * Returns: | |
1273 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1274 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1275 | * sequence must be restarted. All other errors are fatal. | |
1276 | */ | |
1277 | int | |
1278 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1279 | struct drm_crtc *crtc) | |
1280 | { | |
1281 | struct drm_plane *plane; | |
1282 | ||
1283 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1284 | ||
1285 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1286 | struct drm_plane_state *plane_state = | |
1287 | drm_atomic_get_plane_state(state, plane); | |
1288 | ||
1289 | if (IS_ERR(plane_state)) | |
1290 | return PTR_ERR(plane_state); | |
1291 | } | |
1292 | return 0; | |
1293 | } | |
1294 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1295 | ||
cc4ceb48 DV |
1296 | /** |
1297 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1298 | * @state: atomic state | |
1299 | * | |
1300 | * This function should be used by legacy entry points which don't understand | |
1301 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1302 | * the slowpath completed. |
cc4ceb48 DV |
1303 | */ |
1304 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1305 | { | |
81e257e9 ML |
1306 | struct drm_device *dev = state->dev; |
1307 | unsigned crtc_mask = 0; | |
1308 | struct drm_crtc *crtc; | |
cc4ceb48 | 1309 | int ret; |
81e257e9 ML |
1310 | bool global = false; |
1311 | ||
1312 | drm_for_each_crtc(crtc, dev) { | |
1313 | if (crtc->acquire_ctx != state->acquire_ctx) | |
1314 | continue; | |
1315 | ||
1316 | crtc_mask |= drm_crtc_mask(crtc); | |
1317 | crtc->acquire_ctx = NULL; | |
1318 | } | |
1319 | ||
1320 | if (WARN_ON(dev->mode_config.acquire_ctx == state->acquire_ctx)) { | |
1321 | global = true; | |
1322 | ||
1323 | dev->mode_config.acquire_ctx = NULL; | |
1324 | } | |
cc4ceb48 DV |
1325 | |
1326 | retry: | |
1327 | drm_modeset_backoff(state->acquire_ctx); | |
1328 | ||
81e257e9 | 1329 | ret = drm_modeset_lock_all_ctx(dev, state->acquire_ctx); |
cc4ceb48 DV |
1330 | if (ret) |
1331 | goto retry; | |
81e257e9 ML |
1332 | |
1333 | drm_for_each_crtc(crtc, dev) | |
1334 | if (drm_crtc_mask(crtc) & crtc_mask) | |
1335 | crtc->acquire_ctx = state->acquire_ctx; | |
1336 | ||
1337 | if (global) | |
1338 | dev->mode_config.acquire_ctx = state->acquire_ctx; | |
cc4ceb48 DV |
1339 | } |
1340 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1341 | ||
1342 | /** | |
1343 | * drm_atomic_check_only - check whether a given config would work | |
1344 | * @state: atomic configuration to check | |
1345 | * | |
1346 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1347 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1348 | * backoff dance and restart. All other errors are fatal. | |
1349 | * | |
1350 | * Returns: | |
1351 | * 0 on success, negative error code on failure. | |
1352 | */ | |
1353 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1354 | { | |
5e743737 RC |
1355 | struct drm_device *dev = state->dev; |
1356 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1357 | struct drm_plane *plane; |
1358 | struct drm_plane_state *plane_state; | |
1359 | struct drm_crtc *crtc; | |
1360 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1361 | int i, ret = 0; |
cc4ceb48 | 1362 | |
17a38d9c | 1363 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1364 | |
df63b999 ACO |
1365 | for_each_plane_in_state(state, plane, plane_state, i) { |
1366 | ret = drm_atomic_plane_check(plane, plane_state); | |
5e743737 | 1367 | if (ret) { |
9f4c97a2 VS |
1368 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1369 | plane->base.id, plane->name); | |
5e743737 RC |
1370 | return ret; |
1371 | } | |
1372 | } | |
1373 | ||
df63b999 ACO |
1374 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
1375 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
5e743737 | 1376 | if (ret) { |
fa3ab4c2 VS |
1377 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1378 | crtc->base.id, crtc->name); | |
5e743737 RC |
1379 | return ret; |
1380 | } | |
1381 | } | |
1382 | ||
cc4ceb48 | 1383 | if (config->funcs->atomic_check) |
5e743737 RC |
1384 | ret = config->funcs->atomic_check(state->dev, state); |
1385 | ||
d34f20d6 | 1386 | if (!state->allow_modeset) { |
df63b999 | 1387 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1388 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1389 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1390 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1391 | return -EINVAL; |
1392 | } | |
1393 | } | |
1394 | } | |
1395 | ||
5e743737 | 1396 | return ret; |
cc4ceb48 DV |
1397 | } |
1398 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1399 | ||
1400 | /** | |
1401 | * drm_atomic_commit - commit configuration atomically | |
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 | */ | |
1416 | int drm_atomic_commit(struct drm_atomic_state *state) | |
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 | ||
17a38d9c | 1425 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1426 | |
1427 | return config->funcs->atomic_commit(state->dev, state, false); | |
1428 | } | |
1429 | EXPORT_SYMBOL(drm_atomic_commit); | |
1430 | ||
1431 | /** | |
b837ba0a | 1432 | * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit |
cc4ceb48 DV |
1433 | * @state: atomic configuration to check |
1434 | * | |
1435 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1436 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1437 | * backoff dance and restart. All other errors are fatal. | |
1438 | * | |
1439 | * Also note that on successful execution ownership of @state is transferred | |
1440 | * from the caller of this function to the function itself. The caller must not | |
1441 | * free or in any other way access @state. If the function fails then the caller | |
1442 | * must clean up @state itself. | |
1443 | * | |
1444 | * Returns: | |
1445 | * 0 on success, negative error code on failure. | |
1446 | */ | |
b837ba0a | 1447 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1448 | { |
1449 | struct drm_mode_config *config = &state->dev->mode_config; | |
1450 | int ret; | |
1451 | ||
1452 | ret = drm_atomic_check_only(state); | |
1453 | if (ret) | |
1454 | return ret; | |
1455 | ||
b837ba0a | 1456 | DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state); |
cc4ceb48 DV |
1457 | |
1458 | return config->funcs->atomic_commit(state->dev, state, true); | |
1459 | } | |
b837ba0a | 1460 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 RC |
1461 | |
1462 | /* | |
1463 | * The big monstor ioctl | |
1464 | */ | |
1465 | ||
1466 | static struct drm_pending_vblank_event *create_vblank_event( | |
1b47aaf9 GP |
1467 | struct drm_device *dev, struct drm_file *file_priv, |
1468 | struct fence *fence, uint64_t user_data) | |
d34f20d6 RC |
1469 | { |
1470 | struct drm_pending_vblank_event *e = NULL; | |
2dd500f1 | 1471 | int ret; |
d34f20d6 RC |
1472 | |
1473 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
2dd500f1 DV |
1474 | if (!e) |
1475 | return NULL; | |
d34f20d6 RC |
1476 | |
1477 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
2dd500f1 | 1478 | e->event.base.length = sizeof(e->event); |
d34f20d6 | 1479 | e->event.user_data = user_data; |
d34f20d6 | 1480 | |
1b47aaf9 GP |
1481 | if (file_priv) { |
1482 | ret = drm_event_reserve_init(dev, file_priv, &e->base, | |
1483 | &e->event.base); | |
1484 | if (ret) { | |
1485 | kfree(e); | |
1486 | return NULL; | |
1487 | } | |
2dd500f1 | 1488 | } |
d34f20d6 | 1489 | |
1b47aaf9 GP |
1490 | e->base.fence = fence; |
1491 | ||
2dd500f1 | 1492 | return e; |
d34f20d6 RC |
1493 | } |
1494 | ||
1495 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1496 | struct drm_mode_object *obj, struct drm_property *prop, | |
1497 | uint64_t prop_value) | |
1498 | { | |
1499 | struct drm_mode_object *ref; | |
1500 | int ret; | |
1501 | ||
1502 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1503 | return -EINVAL; | |
1504 | ||
1505 | switch (obj->type) { | |
1506 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1507 | struct drm_connector *connector = obj_to_connector(obj); | |
1508 | struct drm_connector_state *connector_state; | |
1509 | ||
1510 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1511 | if (IS_ERR(connector_state)) { | |
1512 | ret = PTR_ERR(connector_state); | |
1513 | break; | |
1514 | } | |
1515 | ||
1516 | ret = drm_atomic_connector_set_property(connector, | |
1517 | connector_state, prop, prop_value); | |
1518 | break; | |
1519 | } | |
1520 | case DRM_MODE_OBJECT_CRTC: { | |
1521 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1522 | struct drm_crtc_state *crtc_state; | |
1523 | ||
1524 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1525 | if (IS_ERR(crtc_state)) { | |
1526 | ret = PTR_ERR(crtc_state); | |
1527 | break; | |
1528 | } | |
1529 | ||
1530 | ret = drm_atomic_crtc_set_property(crtc, | |
1531 | crtc_state, prop, prop_value); | |
1532 | break; | |
1533 | } | |
1534 | case DRM_MODE_OBJECT_PLANE: { | |
1535 | struct drm_plane *plane = obj_to_plane(obj); | |
1536 | struct drm_plane_state *plane_state; | |
1537 | ||
1538 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1539 | if (IS_ERR(plane_state)) { | |
1540 | ret = PTR_ERR(plane_state); | |
1541 | break; | |
1542 | } | |
1543 | ||
1544 | ret = drm_atomic_plane_set_property(plane, | |
1545 | plane_state, prop, prop_value); | |
1546 | break; | |
1547 | } | |
1548 | default: | |
1549 | ret = -EINVAL; | |
1550 | break; | |
1551 | } | |
1552 | ||
1553 | drm_property_change_valid_put(prop, ref); | |
1554 | return ret; | |
1555 | } | |
1556 | ||
0f45c26f | 1557 | /** |
9744bf41 | 1558 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1559 | * |
1560 | * @dev: drm device to check. | |
1561 | * @plane_mask: plane mask for planes that were updated. | |
1562 | * @ret: return value, can be -EDEADLK for a retry. | |
1563 | * | |
1564 | * Before doing an update plane->old_fb is set to plane->fb, | |
1565 | * but before dropping the locks old_fb needs to be set to NULL | |
1566 | * and plane->fb updated. This is a common operation for each | |
1567 | * atomic update, so this call is split off as a helper. | |
1568 | */ | |
1569 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1570 | unsigned plane_mask, | |
1571 | int ret) | |
1572 | { | |
1573 | struct drm_plane *plane; | |
1574 | ||
1575 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1576 | * locks (ie. while it is still safe to deref plane->state). We | |
1577 | * need to do this here because the driver entry points cannot | |
1578 | * distinguish between legacy and atomic ioctls. | |
1579 | */ | |
1580 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1581 | if (ret == 0) { | |
1582 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1583 | if (new_fb) | |
1584 | drm_framebuffer_reference(new_fb); | |
1585 | plane->fb = new_fb; | |
1586 | plane->crtc = plane->state->crtc; | |
1587 | ||
1588 | if (plane->old_fb) | |
1589 | drm_framebuffer_unreference(plane->old_fb); | |
1590 | } | |
1591 | plane->old_fb = NULL; | |
1592 | } | |
1593 | } | |
1594 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1595 | ||
d34f20d6 RC |
1596 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
1597 | void *data, struct drm_file *file_priv) | |
1598 | { | |
1599 | struct drm_mode_atomic *arg = data; | |
1600 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
1601 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
1602 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
1603 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
1604 | unsigned int copied_objs, copied_props; | |
1605 | struct drm_atomic_state *state; | |
1606 | struct drm_modeset_acquire_ctx ctx; | |
1607 | struct drm_plane *plane; | |
df63b999 ACO |
1608 | struct drm_crtc *crtc; |
1609 | struct drm_crtc_state *crtc_state; | |
45723728 | 1610 | unsigned plane_mask; |
d34f20d6 | 1611 | int ret = 0; |
4e9951d9 | 1612 | unsigned int i, j, k; |
d34f20d6 RC |
1613 | |
1614 | /* disallow for drivers not supporting atomic: */ | |
1615 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1616 | return -EINVAL; | |
1617 | ||
1618 | /* disallow for userspace that has not enabled atomic cap (even | |
1619 | * though this may be a bit overkill, since legacy userspace | |
1620 | * wouldn't know how to call this ioctl) | |
1621 | */ | |
1622 | if (!file_priv->atomic) | |
1623 | return -EINVAL; | |
1624 | ||
1625 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
1626 | return -EINVAL; | |
1627 | ||
1628 | if (arg->reserved) | |
1629 | return -EINVAL; | |
1630 | ||
1631 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
1632 | !dev->mode_config.async_page_flip) | |
1633 | return -EINVAL; | |
1634 | ||
1635 | /* can't test and expect an event at the same time. */ | |
1636 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
1637 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1638 | return -EINVAL; | |
1639 | ||
1640 | drm_modeset_acquire_init(&ctx, 0); | |
1641 | ||
1642 | state = drm_atomic_state_alloc(dev); | |
1643 | if (!state) | |
1644 | return -ENOMEM; | |
1645 | ||
1646 | state->acquire_ctx = &ctx; | |
1647 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
1648 | ||
1649 | retry: | |
45723728 | 1650 | plane_mask = 0; |
d34f20d6 RC |
1651 | copied_objs = 0; |
1652 | copied_props = 0; | |
1653 | ||
1654 | for (i = 0; i < arg->count_objs; i++) { | |
1655 | uint32_t obj_id, count_props; | |
1656 | struct drm_mode_object *obj; | |
1657 | ||
1658 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
1659 | ret = -EFAULT; | |
ec9f932e | 1660 | goto out; |
d34f20d6 RC |
1661 | } |
1662 | ||
1663 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
b164d31f DA |
1664 | if (!obj) { |
1665 | ret = -ENOENT; | |
1666 | goto out; | |
1667 | } | |
1668 | ||
1669 | if (!obj->properties) { | |
1670 | drm_mode_object_unreference(obj); | |
d34f20d6 | 1671 | ret = -ENOENT; |
ec9f932e | 1672 | goto out; |
d34f20d6 RC |
1673 | } |
1674 | ||
d34f20d6 | 1675 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
b164d31f | 1676 | drm_mode_object_unreference(obj); |
d34f20d6 | 1677 | ret = -EFAULT; |
ec9f932e | 1678 | goto out; |
d34f20d6 RC |
1679 | } |
1680 | ||
1681 | copied_objs++; | |
1682 | ||
1683 | for (j = 0; j < count_props; j++) { | |
1684 | uint32_t prop_id; | |
1685 | uint64_t prop_value; | |
1686 | struct drm_property *prop; | |
1687 | ||
1688 | if (get_user(prop_id, props_ptr + copied_props)) { | |
b164d31f | 1689 | drm_mode_object_unreference(obj); |
d34f20d6 | 1690 | ret = -EFAULT; |
ec9f932e | 1691 | goto out; |
d34f20d6 RC |
1692 | } |
1693 | ||
4e9951d9 ML |
1694 | for (k = 0; k < obj->properties->count; k++) |
1695 | if (obj->properties->properties[k]->base.id == prop_id) | |
1696 | break; | |
1697 | ||
1698 | if (k == obj->properties->count) { | |
1699 | ret = -EINVAL; | |
1700 | goto out; | |
1701 | } | |
1702 | ||
d34f20d6 RC |
1703 | prop = drm_property_find(dev, prop_id); |
1704 | if (!prop) { | |
b164d31f | 1705 | drm_mode_object_unreference(obj); |
d34f20d6 | 1706 | ret = -ENOENT; |
ec9f932e | 1707 | goto out; |
d34f20d6 RC |
1708 | } |
1709 | ||
42c5814c GR |
1710 | if (copy_from_user(&prop_value, |
1711 | prop_values_ptr + copied_props, | |
1712 | sizeof(prop_value))) { | |
b164d31f | 1713 | drm_mode_object_unreference(obj); |
d34f20d6 | 1714 | ret = -EFAULT; |
ec9f932e | 1715 | goto out; |
d34f20d6 RC |
1716 | } |
1717 | ||
1718 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
b164d31f DA |
1719 | if (ret) { |
1720 | drm_mode_object_unreference(obj); | |
ec9f932e | 1721 | goto out; |
b164d31f | 1722 | } |
d34f20d6 RC |
1723 | |
1724 | copied_props++; | |
1725 | } | |
a9cc54ee | 1726 | |
c4749c9a ML |
1727 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
1728 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
1729 | plane = obj_to_plane(obj); |
1730 | plane_mask |= (1 << drm_plane_index(plane)); | |
1731 | plane->old_fb = plane->fb; | |
1732 | } | |
b164d31f | 1733 | drm_mode_object_unreference(obj); |
d34f20d6 RC |
1734 | } |
1735 | ||
1736 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
df63b999 | 1737 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
d34f20d6 RC |
1738 | struct drm_pending_vblank_event *e; |
1739 | ||
1b47aaf9 GP |
1740 | e = create_vblank_event(dev, file_priv, NULL, |
1741 | arg->user_data); | |
d34f20d6 RC |
1742 | if (!e) { |
1743 | ret = -ENOMEM; | |
ec9f932e | 1744 | goto out; |
d34f20d6 RC |
1745 | } |
1746 | ||
1747 | crtc_state->event = e; | |
1748 | } | |
1749 | } | |
1750 | ||
1751 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
c4749c9a ML |
1752 | /* |
1753 | * Unlike commit, check_only does not clean up state. | |
1754 | * Below we call drm_atomic_state_free for it. | |
1755 | */ | |
d34f20d6 | 1756 | ret = drm_atomic_check_only(state); |
d34f20d6 | 1757 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
b837ba0a | 1758 | ret = drm_atomic_nonblocking_commit(state); |
d34f20d6 RC |
1759 | } else { |
1760 | ret = drm_atomic_commit(state); | |
1761 | } | |
1762 | ||
ec9f932e | 1763 | out: |
0f45c26f | 1764 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 1765 | |
c4749c9a ML |
1766 | if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
1767 | /* | |
1768 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive, | |
1769 | * if they weren't, this code should be called on success | |
1770 | * for TEST_ONLY too. | |
1771 | */ | |
1772 | ||
1773 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1774 | if (!crtc_state->event) | |
1775 | continue; | |
1776 | ||
2dd500f1 | 1777 | drm_event_cancel_free(dev, &crtc_state->event->base); |
c4749c9a ML |
1778 | } |
1779 | } | |
1780 | ||
ec9f932e ML |
1781 | if (ret == -EDEADLK) { |
1782 | drm_atomic_state_clear(state); | |
1783 | drm_modeset_backoff(&ctx); | |
1784 | goto retry; | |
1785 | } | |
d34f20d6 | 1786 | |
c4749c9a | 1787 | if (ret || arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) |
ec9f932e | 1788 | drm_atomic_state_free(state); |
d34f20d6 RC |
1789 | |
1790 | drm_modeset_drop_locks(&ctx); | |
1791 | drm_modeset_acquire_fini(&ctx); | |
1792 | ||
1793 | return ret; | |
d34f20d6 | 1794 | } |