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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 | 32 | #include <drm/drm_plane_helper.h> |
fceffb32 | 33 | #include <drm/drm_print.h> |
cc4ceb48 | 34 | |
be35f94f TR |
35 | #include "drm_crtc_internal.h" |
36 | ||
3b24f7d6 DV |
37 | static void crtc_commit_free(struct kref *kref) |
38 | { | |
39 | struct drm_crtc_commit *commit = | |
40 | container_of(kref, struct drm_crtc_commit, ref); | |
41 | ||
42 | kfree(commit); | |
43 | } | |
44 | ||
45 | void drm_crtc_commit_put(struct drm_crtc_commit *commit) | |
46 | { | |
47 | kref_put(&commit->ref, crtc_commit_free); | |
48 | } | |
49 | EXPORT_SYMBOL(drm_crtc_commit_put); | |
50 | ||
036ef573 ML |
51 | /** |
52 | * drm_atomic_state_default_release - | |
53 | * release memory initialized by drm_atomic_state_init | |
54 | * @state: atomic state | |
55 | * | |
56 | * Free all the memory allocated by drm_atomic_state_init. | |
57 | * This is useful for drivers that subclass the atomic state. | |
58 | */ | |
59 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
60 | { |
61 | kfree(state->connectors); | |
cc4ceb48 | 62 | kfree(state->crtcs); |
cc4ceb48 | 63 | kfree(state->planes); |
cc4ceb48 | 64 | } |
036ef573 | 65 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
66 | |
67 | /** | |
036ef573 | 68 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 69 | * @dev: DRM device |
036ef573 | 70 | * @state: atomic state |
cc4ceb48 | 71 | * |
036ef573 ML |
72 | * Default implementation for filling in a new atomic state. |
73 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 74 | */ |
036ef573 ML |
75 | int |
76 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 77 | { |
0853695c CW |
78 | kref_init(&state->ref); |
79 | ||
d34f20d6 RC |
80 | /* TODO legacy paths should maybe do a better job about |
81 | * setting this appropriately? | |
82 | */ | |
83 | state->allow_modeset = true; | |
84 | ||
cc4ceb48 DV |
85 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
86 | sizeof(*state->crtcs), GFP_KERNEL); | |
87 | if (!state->crtcs) | |
88 | goto fail; | |
cc4ceb48 DV |
89 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
90 | sizeof(*state->planes), GFP_KERNEL); | |
91 | if (!state->planes) | |
92 | goto fail; | |
cc4ceb48 DV |
93 | |
94 | state->dev = dev; | |
95 | ||
036ef573 | 96 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 97 | |
036ef573 | 98 | return 0; |
cc4ceb48 | 99 | fail: |
036ef573 ML |
100 | drm_atomic_state_default_release(state); |
101 | return -ENOMEM; | |
102 | } | |
103 | EXPORT_SYMBOL(drm_atomic_state_init); | |
104 | ||
105 | /** | |
106 | * drm_atomic_state_alloc - allocate atomic state | |
107 | * @dev: DRM device | |
108 | * | |
109 | * This allocates an empty atomic state to track updates. | |
110 | */ | |
111 | struct drm_atomic_state * | |
112 | drm_atomic_state_alloc(struct drm_device *dev) | |
113 | { | |
114 | struct drm_mode_config *config = &dev->mode_config; | |
115 | struct drm_atomic_state *state; | |
116 | ||
117 | if (!config->funcs->atomic_state_alloc) { | |
118 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
119 | if (!state) | |
120 | return NULL; | |
121 | if (drm_atomic_state_init(dev, state) < 0) { | |
122 | kfree(state); | |
123 | return NULL; | |
124 | } | |
125 | return state; | |
126 | } | |
cc4ceb48 | 127 | |
036ef573 | 128 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
129 | } |
130 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
131 | ||
132 | /** | |
036ef573 | 133 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
134 | * @state: atomic state |
135 | * | |
036ef573 ML |
136 | * Default implementation for clearing atomic state. |
137 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 138 | */ |
036ef573 | 139 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
140 | { |
141 | struct drm_device *dev = state->dev; | |
6f75cea6 | 142 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
143 | int i; |
144 | ||
17a38d9c | 145 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 146 | |
f52b69f1 | 147 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 148 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
149 | |
150 | if (!connector) | |
151 | continue; | |
152 | ||
d2307dea | 153 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
154 | state->connectors[i].state); |
155 | state->connectors[i].ptr = NULL; | |
156 | state->connectors[i].state = NULL; | |
b164d31f | 157 | drm_connector_unreference(connector); |
cc4ceb48 DV |
158 | } |
159 | ||
6f75cea6 | 160 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 161 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
162 | |
163 | if (!crtc) | |
164 | continue; | |
165 | ||
166 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 167 | state->crtcs[i].state); |
3b24f7d6 DV |
168 | |
169 | if (state->crtcs[i].commit) { | |
170 | kfree(state->crtcs[i].commit->event); | |
171 | state->crtcs[i].commit->event = NULL; | |
172 | drm_crtc_commit_put(state->crtcs[i].commit); | |
173 | } | |
174 | ||
175 | state->crtcs[i].commit = NULL; | |
5d943aa6 DV |
176 | state->crtcs[i].ptr = NULL; |
177 | state->crtcs[i].state = NULL; | |
cc4ceb48 DV |
178 | } |
179 | ||
6f75cea6 | 180 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 181 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
182 | |
183 | if (!plane) | |
184 | continue; | |
185 | ||
186 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
187 | state->planes[i].state); |
188 | state->planes[i].ptr = NULL; | |
189 | state->planes[i].state = NULL; | |
cc4ceb48 DV |
190 | } |
191 | } | |
036ef573 ML |
192 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
193 | ||
194 | /** | |
195 | * drm_atomic_state_clear - clear state object | |
196 | * @state: atomic state | |
197 | * | |
198 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
199 | * all locks. So someone else could sneak in and change the current modeset | |
200 | * configuration. Which means that all the state assembled in @state is no | |
201 | * longer an atomic update to the current state, but to some arbitrary earlier | |
202 | * state. Which could break assumptions the driver's ->atomic_check likely | |
203 | * relies on. | |
204 | * | |
205 | * Hence we must clear all cached state and completely start over, using this | |
206 | * function. | |
207 | */ | |
208 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
209 | { | |
210 | struct drm_device *dev = state->dev; | |
211 | struct drm_mode_config *config = &dev->mode_config; | |
212 | ||
213 | if (config->funcs->atomic_state_clear) | |
214 | config->funcs->atomic_state_clear(state); | |
215 | else | |
216 | drm_atomic_state_default_clear(state); | |
217 | } | |
cc4ceb48 DV |
218 | EXPORT_SYMBOL(drm_atomic_state_clear); |
219 | ||
220 | /** | |
0853695c CW |
221 | * __drm_atomic_state_free - free all memory for an atomic state |
222 | * @ref: This atomic state to deallocate | |
cc4ceb48 DV |
223 | * |
224 | * This frees all memory associated with an atomic state, including all the | |
225 | * per-object state for planes, crtcs and connectors. | |
226 | */ | |
0853695c | 227 | void __drm_atomic_state_free(struct kref *ref) |
cc4ceb48 | 228 | { |
0853695c CW |
229 | struct drm_atomic_state *state = container_of(ref, typeof(*state), ref); |
230 | struct drm_mode_config *config = &state->dev->mode_config; | |
036ef573 | 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 | 242 | } |
0853695c | 243 | EXPORT_SYMBOL(__drm_atomic_state_free); |
cc4ceb48 DV |
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 | ||
5d943aa6 DV |
281 | state->crtcs[index].state = crtc_state; |
282 | state->crtcs[index].ptr = crtc; | |
cc4ceb48 DV |
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 | ||
6709887c TV |
362 | memset(&state->mode, 0, sizeof(state->mode)); |
363 | ||
955f3c33 DS |
364 | if (blob) { |
365 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
366 | drm_mode_convert_umode(&state->mode, | |
367 | (const struct drm_mode_modeinfo *) | |
368 | blob->data)) | |
369 | return -EINVAL; | |
370 | ||
371 | state->mode_blob = drm_property_reference_blob(blob); | |
372 | state->enable = true; | |
373 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
374 | state->mode.name, state); | |
375 | } else { | |
955f3c33 DS |
376 | state->enable = false; |
377 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
378 | state); | |
379 | } | |
380 | ||
381 | return 0; | |
382 | } | |
383 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
384 | ||
5488dc16 LL |
385 | /** |
386 | * drm_atomic_replace_property_blob - replace a blob property | |
387 | * @blob: a pointer to the member blob to be replaced | |
388 | * @new_blob: the new blob to replace with | |
5488dc16 LL |
389 | * @replaced: whether the blob has been replaced |
390 | * | |
391 | * RETURNS: | |
392 | * Zero on success, error code on failure | |
393 | */ | |
394 | static void | |
395 | drm_atomic_replace_property_blob(struct drm_property_blob **blob, | |
396 | struct drm_property_blob *new_blob, | |
397 | bool *replaced) | |
398 | { | |
399 | struct drm_property_blob *old_blob = *blob; | |
400 | ||
401 | if (old_blob == new_blob) | |
402 | return; | |
403 | ||
f35cbe6a | 404 | drm_property_unreference_blob(old_blob); |
5488dc16 LL |
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); | |
add1fa75 | 475 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
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); | |
add1fa75 | 483 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
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); | |
add1fa75 | 491 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
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 | ||
fceffb32 RC |
606 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
607 | const struct drm_crtc_state *state) | |
608 | { | |
609 | struct drm_crtc *crtc = state->crtc; | |
610 | ||
611 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
612 | drm_printf(p, "\tenable=%d\n", state->enable); | |
613 | drm_printf(p, "\tactive=%d\n", state->active); | |
614 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); | |
615 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
616 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
617 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
618 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
619 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
620 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
621 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
622 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
623 | ||
624 | if (crtc->funcs->atomic_print_state) | |
625 | crtc->funcs->atomic_print_state(p, state); | |
626 | } | |
627 | ||
cc4ceb48 DV |
628 | /** |
629 | * drm_atomic_get_plane_state - get plane state | |
630 | * @state: global atomic state object | |
631 | * @plane: plane to get state object for | |
632 | * | |
633 | * This function returns the plane state for the given plane, allocating it if | |
634 | * needed. It will also grab the relevant plane lock to make sure that the state | |
635 | * is consistent. | |
636 | * | |
637 | * Returns: | |
638 | * | |
639 | * Either the allocated state or the error code encoded into the pointer. When | |
640 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
641 | * entire atomic sequence must be restarted. All other errors are fatal. | |
642 | */ | |
643 | struct drm_plane_state * | |
644 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
645 | struct drm_plane *plane) | |
646 | { | |
1b26a5e1 | 647 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
648 | struct drm_plane_state *plane_state; |
649 | ||
7f4eaa89 ML |
650 | WARN_ON(!state->acquire_ctx); |
651 | ||
1b26a5e1 ML |
652 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
653 | if (plane_state) | |
654 | return plane_state; | |
cc4ceb48 | 655 | |
4d02e2de | 656 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
657 | if (ret) |
658 | return ERR_PTR(ret); | |
659 | ||
660 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
661 | if (!plane_state) | |
662 | return ERR_PTR(-ENOMEM); | |
663 | ||
b8b5342b DV |
664 | state->planes[index].state = plane_state; |
665 | state->planes[index].ptr = plane; | |
cc4ceb48 DV |
666 | plane_state->state = state; |
667 | ||
9f4c97a2 VS |
668 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
669 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
670 | |
671 | if (plane_state->crtc) { | |
672 | struct drm_crtc_state *crtc_state; | |
673 | ||
674 | crtc_state = drm_atomic_get_crtc_state(state, | |
675 | plane_state->crtc); | |
676 | if (IS_ERR(crtc_state)) | |
677 | return ERR_CAST(crtc_state); | |
678 | } | |
679 | ||
680 | return plane_state; | |
681 | } | |
682 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
683 | ||
40ecc694 RC |
684 | /** |
685 | * drm_atomic_plane_set_property - set property on plane | |
686 | * @plane: the drm plane to set a property on | |
687 | * @state: the state object to update with the new property value | |
688 | * @property: the property to set | |
689 | * @val: the new property value | |
690 | * | |
691 | * Use this instead of calling plane->atomic_set_property directly. | |
692 | * This function handles generic/core properties and calls out to | |
693 | * driver's ->atomic_set_property() for driver properties. To ensure | |
694 | * consistent behavior you must call this function rather than the | |
695 | * driver hook directly. | |
696 | * | |
697 | * RETURNS: | |
698 | * Zero on success, error code on failure | |
699 | */ | |
700 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
701 | struct drm_plane_state *state, struct drm_property *property, | |
702 | uint64_t val) | |
703 | { | |
6b4959f4 RC |
704 | struct drm_device *dev = plane->dev; |
705 | struct drm_mode_config *config = &dev->mode_config; | |
706 | ||
707 | if (property == config->prop_fb_id) { | |
708 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
709 | drm_atomic_set_fb_for_plane(state, fb); | |
710 | if (fb) | |
711 | drm_framebuffer_unreference(fb); | |
712 | } else if (property == config->prop_crtc_id) { | |
713 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
714 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
715 | } else if (property == config->prop_crtc_x) { | |
716 | state->crtc_x = U642I64(val); | |
717 | } else if (property == config->prop_crtc_y) { | |
718 | state->crtc_y = U642I64(val); | |
719 | } else if (property == config->prop_crtc_w) { | |
720 | state->crtc_w = val; | |
721 | } else if (property == config->prop_crtc_h) { | |
722 | state->crtc_h = val; | |
723 | } else if (property == config->prop_src_x) { | |
724 | state->src_x = val; | |
725 | } else if (property == config->prop_src_y) { | |
726 | state->src_y = val; | |
727 | } else if (property == config->prop_src_w) { | |
728 | state->src_w = val; | |
729 | } else if (property == config->prop_src_h) { | |
730 | state->src_h = val; | |
6686df8c | 731 | } else if (property == plane->rotation_property) { |
6e0c7c33 VS |
732 | if (!is_power_of_2(val & DRM_ROTATE_MASK)) |
733 | return -EINVAL; | |
1da30627 | 734 | state->rotation = val; |
44d1240d MS |
735 | } else if (property == plane->zpos_property) { |
736 | state->zpos = val; | |
6b4959f4 RC |
737 | } else if (plane->funcs->atomic_set_property) { |
738 | return plane->funcs->atomic_set_property(plane, state, | |
739 | property, val); | |
740 | } else { | |
741 | return -EINVAL; | |
742 | } | |
743 | ||
744 | return 0; | |
40ecc694 RC |
745 | } |
746 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
747 | ||
c0714fc9 DV |
748 | /** |
749 | * drm_atomic_plane_get_property - get property value from plane state | |
750 | * @plane: the drm plane to set a property on | |
751 | * @state: the state object to get the property value from | |
752 | * @property: the property to set | |
753 | * @val: return location for the property value | |
754 | * | |
ac9c9256 RC |
755 | * This function handles generic/core properties and calls out to |
756 | * driver's ->atomic_get_property() for driver properties. To ensure | |
757 | * consistent behavior you must call this function rather than the | |
758 | * driver hook directly. | |
c0714fc9 DV |
759 | * |
760 | * RETURNS: | |
761 | * Zero on success, error code on failure | |
ac9c9256 | 762 | */ |
a97df1cc DV |
763 | static int |
764 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
765 | const struct drm_plane_state *state, |
766 | struct drm_property *property, uint64_t *val) | |
767 | { | |
6b4959f4 RC |
768 | struct drm_device *dev = plane->dev; |
769 | struct drm_mode_config *config = &dev->mode_config; | |
770 | ||
771 | if (property == config->prop_fb_id) { | |
772 | *val = (state->fb) ? state->fb->base.id : 0; | |
773 | } else if (property == config->prop_crtc_id) { | |
774 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
775 | } else if (property == config->prop_crtc_x) { | |
776 | *val = I642U64(state->crtc_x); | |
777 | } else if (property == config->prop_crtc_y) { | |
778 | *val = I642U64(state->crtc_y); | |
779 | } else if (property == config->prop_crtc_w) { | |
780 | *val = state->crtc_w; | |
781 | } else if (property == config->prop_crtc_h) { | |
782 | *val = state->crtc_h; | |
783 | } else if (property == config->prop_src_x) { | |
784 | *val = state->src_x; | |
785 | } else if (property == config->prop_src_y) { | |
786 | *val = state->src_y; | |
787 | } else if (property == config->prop_src_w) { | |
788 | *val = state->src_w; | |
789 | } else if (property == config->prop_src_h) { | |
790 | *val = state->src_h; | |
6686df8c | 791 | } else if (property == plane->rotation_property) { |
4cda09ca | 792 | *val = state->rotation; |
44d1240d MS |
793 | } else if (property == plane->zpos_property) { |
794 | *val = state->zpos; | |
6b4959f4 | 795 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 796 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
797 | } else { |
798 | return -EINVAL; | |
799 | } | |
800 | ||
801 | return 0; | |
ac9c9256 | 802 | } |
ac9c9256 | 803 | |
f8aeb41c DV |
804 | static bool |
805 | plane_switching_crtc(struct drm_atomic_state *state, | |
806 | struct drm_plane *plane, | |
807 | struct drm_plane_state *plane_state) | |
808 | { | |
809 | if (!plane->state->crtc || !plane_state->crtc) | |
810 | return false; | |
811 | ||
812 | if (plane->state->crtc == plane_state->crtc) | |
813 | return false; | |
814 | ||
815 | /* This could be refined, but currently there's no helper or driver code | |
816 | * to implement direct switching of active planes nor userspace to take | |
817 | * advantage of more direct plane switching without the intermediate | |
818 | * full OFF state. | |
819 | */ | |
820 | return true; | |
821 | } | |
822 | ||
5e743737 RC |
823 | /** |
824 | * drm_atomic_plane_check - check plane state | |
825 | * @plane: plane to check | |
826 | * @state: plane state to check | |
827 | * | |
828 | * Provides core sanity checks for plane state. | |
829 | * | |
830 | * RETURNS: | |
831 | * Zero on success, error code on failure | |
832 | */ | |
833 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
834 | struct drm_plane_state *state) | |
835 | { | |
836 | unsigned int fb_width, fb_height; | |
ead8610d | 837 | int ret; |
5e743737 RC |
838 | |
839 | /* either *both* CRTC and FB must be set, or neither */ | |
840 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 841 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
842 | return -EINVAL; |
843 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 844 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
845 | return -EINVAL; |
846 | } | |
847 | ||
848 | /* if disabled, we don't care about the rest of the state: */ | |
849 | if (!state->crtc) | |
850 | return 0; | |
851 | ||
852 | /* Check whether this plane is usable on this CRTC */ | |
853 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 854 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
855 | return -EINVAL; |
856 | } | |
857 | ||
858 | /* Check whether this plane supports the fb pixel format. */ | |
ead8610d LP |
859 | ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format); |
860 | if (ret) { | |
d3828147 | 861 | char *format_name = drm_get_format_name(state->fb->pixel_format); |
90844f00 EE |
862 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", format_name); |
863 | kfree(format_name); | |
ead8610d | 864 | return ret; |
5e743737 RC |
865 | } |
866 | ||
867 | /* Give drivers some help against integer overflows */ | |
868 | if (state->crtc_w > INT_MAX || | |
869 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
870 | state->crtc_h > INT_MAX || | |
871 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
872 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
873 | state->crtc_w, state->crtc_h, | |
874 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
875 | return -ERANGE; |
876 | } | |
877 | ||
878 | fb_width = state->fb->width << 16; | |
879 | fb_height = state->fb->height << 16; | |
880 | ||
881 | /* Make sure source coordinates are inside the fb. */ | |
882 | if (state->src_w > fb_width || | |
883 | state->src_x > fb_width - state->src_w || | |
884 | state->src_h > fb_height || | |
885 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
886 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
887 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
888 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
889 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
890 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
891 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
892 | return -ENOSPC; |
893 | } | |
894 | ||
f8aeb41c | 895 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
896 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
897 | plane->base.id, plane->name); | |
f8aeb41c DV |
898 | return -EINVAL; |
899 | } | |
900 | ||
5e743737 RC |
901 | return 0; |
902 | } | |
903 | ||
fceffb32 RC |
904 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
905 | const struct drm_plane_state *state) | |
906 | { | |
907 | struct drm_plane *plane = state->plane; | |
908 | struct drm_rect src = drm_plane_state_src(state); | |
909 | struct drm_rect dest = drm_plane_state_dest(state); | |
910 | ||
911 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
912 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
913 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
914 | if (state->fb) { | |
915 | struct drm_framebuffer *fb = state->fb; | |
916 | int i, n = drm_format_num_planes(fb->pixel_format); | |
917 | ||
918 | drm_printf(p, "\t\tformat=%s\n", | |
919 | drm_get_format_name(fb->pixel_format)); | |
920 | drm_printf(p, "\t\tsize=%dx%d\n", fb->width, fb->height); | |
921 | drm_printf(p, "\t\tlayers:\n"); | |
922 | for (i = 0; i < n; i++) { | |
923 | drm_printf(p, "\t\t\tpitch[%d]=%u\n", i, fb->pitches[i]); | |
924 | drm_printf(p, "\t\t\toffset[%d]=%u\n", i, fb->offsets[i]); | |
925 | drm_printf(p, "\t\t\tmodifier[%d]=0x%llx\n", i, fb->modifier[i]); | |
926 | } | |
927 | } | |
928 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); | |
929 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
930 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
931 | ||
932 | if (plane->funcs->atomic_print_state) | |
933 | plane->funcs->atomic_print_state(p, state); | |
934 | } | |
935 | ||
cc4ceb48 DV |
936 | /** |
937 | * drm_atomic_get_connector_state - get connector state | |
938 | * @state: global atomic state object | |
939 | * @connector: connector to get state object for | |
940 | * | |
941 | * This function returns the connector state for the given connector, | |
942 | * allocating it if needed. It will also grab the relevant connector lock to | |
943 | * make sure that the state is consistent. | |
944 | * | |
945 | * Returns: | |
946 | * | |
947 | * Either the allocated state or the error code encoded into the pointer. When | |
948 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
949 | * entire atomic sequence must be restarted. All other errors are fatal. | |
950 | */ | |
951 | struct drm_connector_state * | |
952 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
953 | struct drm_connector *connector) | |
954 | { | |
955 | int ret, index; | |
956 | struct drm_mode_config *config = &connector->dev->mode_config; | |
957 | struct drm_connector_state *connector_state; | |
958 | ||
7f4eaa89 ML |
959 | WARN_ON(!state->acquire_ctx); |
960 | ||
c7eb76f4 DV |
961 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
962 | if (ret) | |
963 | return ERR_PTR(ret); | |
964 | ||
cc4ceb48 DV |
965 | index = drm_connector_index(connector); |
966 | ||
f52b69f1 | 967 | if (index >= state->num_connector) { |
63e83c1d | 968 | struct __drm_connnectors_state *c; |
5fff80bb ML |
969 | int alloc = max(index + 1, config->num_connector); |
970 | ||
971 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
972 | if (!c) | |
973 | return ERR_PTR(-ENOMEM); | |
974 | ||
975 | state->connectors = c; | |
976 | memset(&state->connectors[state->num_connector], 0, | |
977 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
978 | ||
5fff80bb | 979 | state->num_connector = alloc; |
f52b69f1 DV |
980 | } |
981 | ||
63e83c1d DV |
982 | if (state->connectors[index].state) |
983 | return state->connectors[index].state; | |
cc4ceb48 | 984 | |
cc4ceb48 DV |
985 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
986 | if (!connector_state) | |
987 | return ERR_PTR(-ENOMEM); | |
988 | ||
b164d31f | 989 | drm_connector_reference(connector); |
63e83c1d DV |
990 | state->connectors[index].state = connector_state; |
991 | state->connectors[index].ptr = connector; | |
cc4ceb48 DV |
992 | connector_state->state = state; |
993 | ||
17a38d9c DV |
994 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", |
995 | connector->base.id, connector_state, state); | |
cc4ceb48 DV |
996 | |
997 | if (connector_state->crtc) { | |
998 | struct drm_crtc_state *crtc_state; | |
999 | ||
1000 | crtc_state = drm_atomic_get_crtc_state(state, | |
1001 | connector_state->crtc); | |
1002 | if (IS_ERR(crtc_state)) | |
1003 | return ERR_CAST(crtc_state); | |
1004 | } | |
1005 | ||
1006 | return connector_state; | |
1007 | } | |
1008 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1009 | ||
40ecc694 RC |
1010 | /** |
1011 | * drm_atomic_connector_set_property - set property on connector. | |
1012 | * @connector: the drm connector to set a property on | |
1013 | * @state: the state object to update with the new property value | |
1014 | * @property: the property to set | |
1015 | * @val: the new property value | |
1016 | * | |
1017 | * Use this instead of calling connector->atomic_set_property directly. | |
1018 | * This function handles generic/core properties and calls out to | |
1019 | * driver's ->atomic_set_property() for driver properties. To ensure | |
1020 | * consistent behavior you must call this function rather than the | |
1021 | * driver hook directly. | |
1022 | * | |
1023 | * RETURNS: | |
1024 | * Zero on success, error code on failure | |
1025 | */ | |
1026 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
1027 | struct drm_connector_state *state, struct drm_property *property, | |
1028 | uint64_t val) | |
1029 | { | |
1030 | struct drm_device *dev = connector->dev; | |
1031 | struct drm_mode_config *config = &dev->mode_config; | |
1032 | ||
ae16c597 RC |
1033 | if (property == config->prop_crtc_id) { |
1034 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
1035 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
1036 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
1037 | /* setting DPMS property requires special handling, which |
1038 | * is done in legacy setprop path for us. Disallow (for | |
1039 | * now?) atomic writes to DPMS property: | |
1040 | */ | |
1041 | return -EINVAL; | |
1042 | } else if (connector->funcs->atomic_set_property) { | |
1043 | return connector->funcs->atomic_set_property(connector, | |
1044 | state, property, val); | |
1045 | } else { | |
1046 | return -EINVAL; | |
1047 | } | |
1048 | } | |
1049 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
1050 | ||
fceffb32 RC |
1051 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1052 | const struct drm_connector_state *state) | |
1053 | { | |
1054 | struct drm_connector *connector = state->connector; | |
1055 | ||
1056 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1057 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1058 | ||
1059 | if (connector->funcs->atomic_print_state) | |
1060 | connector->funcs->atomic_print_state(p, state); | |
1061 | } | |
1062 | ||
c0714fc9 DV |
1063 | /** |
1064 | * drm_atomic_connector_get_property - get property value from connector state | |
1065 | * @connector: the drm connector to set a property on | |
1066 | * @state: the state object to get the property value from | |
1067 | * @property: the property to set | |
1068 | * @val: return location for the property value | |
1069 | * | |
ac9c9256 RC |
1070 | * This function handles generic/core properties and calls out to |
1071 | * driver's ->atomic_get_property() for driver properties. To ensure | |
1072 | * consistent behavior you must call this function rather than the | |
1073 | * driver hook directly. | |
c0714fc9 DV |
1074 | * |
1075 | * RETURNS: | |
1076 | * Zero on success, error code on failure | |
ac9c9256 | 1077 | */ |
a97df1cc DV |
1078 | static int |
1079 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
1080 | const struct drm_connector_state *state, |
1081 | struct drm_property *property, uint64_t *val) | |
1082 | { | |
1083 | struct drm_device *dev = connector->dev; | |
1084 | struct drm_mode_config *config = &dev->mode_config; | |
1085 | ||
ae16c597 RC |
1086 | if (property == config->prop_crtc_id) { |
1087 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
1088 | } else if (property == config->dpms_property) { | |
ac9c9256 RC |
1089 | *val = connector->dpms; |
1090 | } else if (connector->funcs->atomic_get_property) { | |
1091 | return connector->funcs->atomic_get_property(connector, | |
1092 | state, property, val); | |
1093 | } else { | |
1094 | return -EINVAL; | |
1095 | } | |
1096 | ||
1097 | return 0; | |
1098 | } | |
ac9c9256 | 1099 | |
88a48e29 RC |
1100 | int drm_atomic_get_property(struct drm_mode_object *obj, |
1101 | struct drm_property *property, uint64_t *val) | |
1102 | { | |
1103 | struct drm_device *dev = property->dev; | |
1104 | int ret; | |
1105 | ||
1106 | switch (obj->type) { | |
1107 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1108 | struct drm_connector *connector = obj_to_connector(obj); | |
1109 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
1110 | ret = drm_atomic_connector_get_property(connector, | |
1111 | connector->state, property, val); | |
1112 | break; | |
1113 | } | |
1114 | case DRM_MODE_OBJECT_CRTC: { | |
1115 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1116 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1117 | ret = drm_atomic_crtc_get_property(crtc, | |
1118 | crtc->state, property, val); | |
1119 | break; | |
1120 | } | |
1121 | case DRM_MODE_OBJECT_PLANE: { | |
1122 | struct drm_plane *plane = obj_to_plane(obj); | |
1123 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
1124 | ret = drm_atomic_plane_get_property(plane, | |
1125 | plane->state, property, val); | |
1126 | break; | |
1127 | } | |
1128 | default: | |
1129 | ret = -EINVAL; | |
1130 | break; | |
1131 | } | |
1132 | ||
1133 | return ret; | |
1134 | } | |
1135 | ||
cc4ceb48 DV |
1136 | /** |
1137 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 1138 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
1139 | * @crtc: crtc to use for the plane |
1140 | * | |
1141 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
1142 | * for the new crtc, as needed. This function takes care of all these details | |
1143 | * besides updating the pointer in the state object itself. | |
1144 | * | |
1145 | * Returns: | |
1146 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1147 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1148 | * sequence must be restarted. All other errors are fatal. | |
1149 | */ | |
1150 | int | |
07cc0ef6 DV |
1151 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
1152 | struct drm_crtc *crtc) | |
cc4ceb48 | 1153 | { |
07cc0ef6 | 1154 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
1155 | struct drm_crtc_state *crtc_state; |
1156 | ||
6ddd388a RC |
1157 | if (plane_state->crtc) { |
1158 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1159 | plane_state->crtc); | |
1160 | if (WARN_ON(IS_ERR(crtc_state))) | |
1161 | return PTR_ERR(crtc_state); | |
1162 | ||
1163 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1164 | } | |
1165 | ||
1166 | plane_state->crtc = crtc; | |
1167 | ||
cc4ceb48 DV |
1168 | if (crtc) { |
1169 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1170 | crtc); | |
1171 | if (IS_ERR(crtc_state)) | |
1172 | return PTR_ERR(crtc_state); | |
6ddd388a | 1173 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1174 | } |
1175 | ||
cc4ceb48 | 1176 | if (crtc) |
fa3ab4c2 VS |
1177 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1178 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1179 | else |
17a38d9c DV |
1180 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1181 | plane_state); | |
cc4ceb48 DV |
1182 | |
1183 | return 0; | |
1184 | } | |
1185 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1186 | ||
321ebf04 | 1187 | /** |
16d78bc2 | 1188 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1189 | * @plane_state: atomic state object for the plane |
1190 | * @fb: fb to use for the plane | |
1191 | * | |
1192 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1193 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1194 | * function takes care of all these details besides updating the pointer in the | |
1195 | * state object itself. | |
1196 | */ | |
1197 | void | |
1198 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1199 | struct drm_framebuffer *fb) | |
1200 | { | |
1201 | if (plane_state->fb) | |
1202 | drm_framebuffer_unreference(plane_state->fb); | |
1203 | if (fb) | |
1204 | drm_framebuffer_reference(fb); | |
1205 | plane_state->fb = fb; | |
1206 | ||
1207 | if (fb) | |
17a38d9c DV |
1208 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1209 | fb->base.id, plane_state); | |
321ebf04 | 1210 | else |
17a38d9c DV |
1211 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1212 | plane_state); | |
321ebf04 DV |
1213 | } |
1214 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1215 | ||
13b55664 GP |
1216 | /** |
1217 | * drm_atomic_set_fence_for_plane - set fence for plane | |
1218 | * @plane_state: atomic state object for the plane | |
1219 | * @fence: dma_fence to use for the plane | |
1220 | * | |
1221 | * Helper to setup the plane_state fence in case it is not set yet. | |
1222 | * By using this drivers doesn't need to worry if the user choose | |
1223 | * implicit or explicit fencing. | |
1224 | * | |
1225 | * This function will not set the fence to the state if it was set | |
1226 | * via explicit fencing interfaces on the atomic ioctl. It will | |
1227 | * all drope the reference to the fence as we not storing it | |
1228 | * anywhere. | |
1229 | * | |
1230 | * Otherwise, if plane_state->fence is not set this function we | |
1231 | * just set it with the received implict fence. | |
1232 | */ | |
1233 | void | |
1234 | drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state, | |
1235 | struct dma_fence *fence) | |
1236 | { | |
1237 | if (plane_state->fence) { | |
1238 | dma_fence_put(fence); | |
1239 | return; | |
1240 | } | |
1241 | ||
1242 | plane_state->fence = fence; | |
1243 | } | |
1244 | EXPORT_SYMBOL(drm_atomic_set_fence_for_plane); | |
1245 | ||
cc4ceb48 DV |
1246 | /** |
1247 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1248 | * @conn_state: atomic state object for the connector | |
1249 | * @crtc: crtc to use for the connector | |
1250 | * | |
1251 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1252 | * state for the new crtc, as needed. This function takes care of all these | |
1253 | * details besides updating the pointer in the state object itself. | |
1254 | * | |
1255 | * Returns: | |
1256 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1257 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1258 | * sequence must be restarted. All other errors are fatal. | |
1259 | */ | |
1260 | int | |
1261 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1262 | struct drm_crtc *crtc) | |
1263 | { | |
1264 | struct drm_crtc_state *crtc_state; | |
1265 | ||
e2d800a3 CW |
1266 | if (conn_state->crtc == crtc) |
1267 | return 0; | |
1268 | ||
1269 | if (conn_state->crtc) { | |
4cd9fa52 ML |
1270 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, |
1271 | conn_state->crtc); | |
1272 | ||
1273 | crtc_state->connector_mask &= | |
1274 | ~(1 << drm_connector_index(conn_state->connector)); | |
e2d800a3 CW |
1275 | |
1276 | drm_connector_unreference(conn_state->connector); | |
1277 | conn_state->crtc = NULL; | |
4cd9fa52 ML |
1278 | } |
1279 | ||
cc4ceb48 DV |
1280 | if (crtc) { |
1281 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1282 | if (IS_ERR(crtc_state)) | |
1283 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1284 | |
1285 | crtc_state->connector_mask |= | |
1286 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 | 1287 | |
e2d800a3 CW |
1288 | drm_connector_reference(conn_state->connector); |
1289 | conn_state->crtc = crtc; | |
cc4ceb48 | 1290 | |
fa3ab4c2 VS |
1291 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1292 | conn_state, crtc->base.id, crtc->name); | |
e2d800a3 | 1293 | } else { |
17a38d9c DV |
1294 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1295 | conn_state); | |
e2d800a3 | 1296 | } |
cc4ceb48 DV |
1297 | |
1298 | return 0; | |
1299 | } | |
1300 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1301 | ||
1302 | /** | |
1303 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1304 | * @state: atomic state | |
1305 | * @crtc: DRM crtc | |
1306 | * | |
1307 | * This function walks the current configuration and adds all connectors | |
1308 | * currently using @crtc to the atomic configuration @state. Note that this | |
1309 | * function must acquire the connection mutex. This can potentially cause | |
1310 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1311 | * drivers and helpers should only call this when really needed (e.g. when a | |
1312 | * full modeset needs to happen due to some change). | |
1313 | * | |
1314 | * Returns: | |
1315 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1316 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1317 | * sequence must be restarted. All other errors are fatal. | |
1318 | */ | |
1319 | int | |
1320 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1321 | struct drm_crtc *crtc) | |
1322 | { | |
1323 | struct drm_mode_config *config = &state->dev->mode_config; | |
1324 | struct drm_connector *connector; | |
1325 | struct drm_connector_state *conn_state; | |
1326 | int ret; | |
1327 | ||
1328 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1329 | if (ret) | |
1330 | return ret; | |
1331 | ||
fa3ab4c2 VS |
1332 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1333 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1334 | |
1335 | /* | |
1336 | * Changed connectors are already in @state, so only need to look at the | |
1337 | * current configuration. | |
1338 | */ | |
9a9f5ce8 | 1339 | drm_for_each_connector(connector, state->dev) { |
cc4ceb48 DV |
1340 | if (connector->state->crtc != crtc) |
1341 | continue; | |
1342 | ||
1343 | conn_state = drm_atomic_get_connector_state(state, connector); | |
1344 | if (IS_ERR(conn_state)) | |
1345 | return PTR_ERR(conn_state); | |
1346 | } | |
1347 | ||
1348 | return 0; | |
1349 | } | |
1350 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1351 | ||
e01e9f75 ML |
1352 | /** |
1353 | * drm_atomic_add_affected_planes - add planes for crtc | |
1354 | * @state: atomic state | |
1355 | * @crtc: DRM crtc | |
1356 | * | |
1357 | * This function walks the current configuration and adds all planes | |
1358 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1359 | * when an atomic commit also needs to check all currently enabled plane on | |
1360 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1361 | * to avoid special code to force-enable all planes. | |
1362 | * | |
1363 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1364 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1365 | * a CRTC will not reduce parallism of atomic updates. | |
1366 | * | |
1367 | * Returns: | |
1368 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1369 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1370 | * sequence must be restarted. All other errors are fatal. | |
1371 | */ | |
1372 | int | |
1373 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1374 | struct drm_crtc *crtc) | |
1375 | { | |
1376 | struct drm_plane *plane; | |
1377 | ||
1378 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1379 | ||
1380 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1381 | struct drm_plane_state *plane_state = | |
1382 | drm_atomic_get_plane_state(state, plane); | |
1383 | ||
1384 | if (IS_ERR(plane_state)) | |
1385 | return PTR_ERR(plane_state); | |
1386 | } | |
1387 | return 0; | |
1388 | } | |
1389 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1390 | ||
cc4ceb48 DV |
1391 | /** |
1392 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1393 | * @state: atomic state | |
1394 | * | |
1395 | * This function should be used by legacy entry points which don't understand | |
1396 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1397 | * the slowpath completed. |
cc4ceb48 DV |
1398 | */ |
1399 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1400 | { | |
81e257e9 ML |
1401 | struct drm_device *dev = state->dev; |
1402 | unsigned crtc_mask = 0; | |
1403 | struct drm_crtc *crtc; | |
cc4ceb48 | 1404 | int ret; |
81e257e9 ML |
1405 | bool global = false; |
1406 | ||
1407 | drm_for_each_crtc(crtc, dev) { | |
1408 | if (crtc->acquire_ctx != state->acquire_ctx) | |
1409 | continue; | |
1410 | ||
1411 | crtc_mask |= drm_crtc_mask(crtc); | |
1412 | crtc->acquire_ctx = NULL; | |
1413 | } | |
1414 | ||
1415 | if (WARN_ON(dev->mode_config.acquire_ctx == state->acquire_ctx)) { | |
1416 | global = true; | |
1417 | ||
1418 | dev->mode_config.acquire_ctx = NULL; | |
1419 | } | |
cc4ceb48 DV |
1420 | |
1421 | retry: | |
1422 | drm_modeset_backoff(state->acquire_ctx); | |
1423 | ||
81e257e9 | 1424 | ret = drm_modeset_lock_all_ctx(dev, state->acquire_ctx); |
cc4ceb48 DV |
1425 | if (ret) |
1426 | goto retry; | |
81e257e9 ML |
1427 | |
1428 | drm_for_each_crtc(crtc, dev) | |
1429 | if (drm_crtc_mask(crtc) & crtc_mask) | |
1430 | crtc->acquire_ctx = state->acquire_ctx; | |
1431 | ||
1432 | if (global) | |
1433 | dev->mode_config.acquire_ctx = state->acquire_ctx; | |
cc4ceb48 DV |
1434 | } |
1435 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1436 | ||
1437 | /** | |
1438 | * drm_atomic_check_only - check whether a given config would work | |
1439 | * @state: atomic configuration to check | |
1440 | * | |
1441 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1442 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1443 | * backoff dance and restart. All other errors are fatal. | |
1444 | * | |
1445 | * Returns: | |
1446 | * 0 on success, negative error code on failure. | |
1447 | */ | |
1448 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1449 | { | |
5e743737 RC |
1450 | struct drm_device *dev = state->dev; |
1451 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1452 | struct drm_plane *plane; |
1453 | struct drm_plane_state *plane_state; | |
1454 | struct drm_crtc *crtc; | |
1455 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1456 | int i, ret = 0; |
cc4ceb48 | 1457 | |
17a38d9c | 1458 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1459 | |
df63b999 ACO |
1460 | for_each_plane_in_state(state, plane, plane_state, i) { |
1461 | ret = drm_atomic_plane_check(plane, plane_state); | |
5e743737 | 1462 | if (ret) { |
9f4c97a2 VS |
1463 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1464 | plane->base.id, plane->name); | |
5e743737 RC |
1465 | return ret; |
1466 | } | |
1467 | } | |
1468 | ||
df63b999 ACO |
1469 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
1470 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
5e743737 | 1471 | if (ret) { |
fa3ab4c2 VS |
1472 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1473 | crtc->base.id, crtc->name); | |
5e743737 RC |
1474 | return ret; |
1475 | } | |
1476 | } | |
1477 | ||
cc4ceb48 | 1478 | if (config->funcs->atomic_check) |
5e743737 RC |
1479 | ret = config->funcs->atomic_check(state->dev, state); |
1480 | ||
d34f20d6 | 1481 | if (!state->allow_modeset) { |
df63b999 | 1482 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1483 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1484 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1485 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1486 | return -EINVAL; |
1487 | } | |
1488 | } | |
1489 | } | |
1490 | ||
5e743737 | 1491 | return ret; |
cc4ceb48 DV |
1492 | } |
1493 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1494 | ||
1495 | /** | |
1496 | * drm_atomic_commit - commit configuration atomically | |
1497 | * @state: atomic configuration to check | |
1498 | * | |
1499 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1500 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1501 | * backoff dance and restart. All other errors are fatal. | |
1502 | * | |
1503 | * Also note that on successful execution ownership of @state is transferred | |
1504 | * from the caller of this function to the function itself. The caller must not | |
1505 | * free or in any other way access @state. If the function fails then the caller | |
1506 | * must clean up @state itself. | |
1507 | * | |
1508 | * Returns: | |
1509 | * 0 on success, negative error code on failure. | |
1510 | */ | |
1511 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1512 | { | |
1513 | struct drm_mode_config *config = &state->dev->mode_config; | |
1514 | int ret; | |
1515 | ||
1516 | ret = drm_atomic_check_only(state); | |
1517 | if (ret) | |
1518 | return ret; | |
1519 | ||
17a38d9c | 1520 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1521 | |
1522 | return config->funcs->atomic_commit(state->dev, state, false); | |
1523 | } | |
1524 | EXPORT_SYMBOL(drm_atomic_commit); | |
1525 | ||
1526 | /** | |
b837ba0a | 1527 | * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit |
cc4ceb48 DV |
1528 | * @state: atomic configuration to check |
1529 | * | |
1530 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1531 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1532 | * backoff dance and restart. All other errors are fatal. | |
1533 | * | |
1534 | * Also note that on successful execution ownership of @state is transferred | |
1535 | * from the caller of this function to the function itself. The caller must not | |
1536 | * free or in any other way access @state. If the function fails then the caller | |
1537 | * must clean up @state itself. | |
1538 | * | |
1539 | * Returns: | |
1540 | * 0 on success, negative error code on failure. | |
1541 | */ | |
b837ba0a | 1542 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1543 | { |
1544 | struct drm_mode_config *config = &state->dev->mode_config; | |
1545 | int ret; | |
1546 | ||
1547 | ret = drm_atomic_check_only(state); | |
1548 | if (ret) | |
1549 | return ret; | |
1550 | ||
b837ba0a | 1551 | DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state); |
cc4ceb48 DV |
1552 | |
1553 | return config->funcs->atomic_commit(state->dev, state, true); | |
1554 | } | |
b837ba0a | 1555 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1556 | |
fceffb32 RC |
1557 | static void drm_atomic_print_state(const struct drm_atomic_state *state) |
1558 | { | |
1559 | struct drm_printer p = drm_info_printer(state->dev->dev); | |
1560 | struct drm_plane *plane; | |
1561 | struct drm_plane_state *plane_state; | |
1562 | struct drm_crtc *crtc; | |
1563 | struct drm_crtc_state *crtc_state; | |
1564 | struct drm_connector *connector; | |
1565 | struct drm_connector_state *connector_state; | |
1566 | int i; | |
1567 | ||
1568 | DRM_DEBUG_ATOMIC("checking %p\n", state); | |
1569 | ||
1570 | for_each_plane_in_state(state, plane, plane_state, i) | |
1571 | drm_atomic_plane_print_state(&p, plane_state); | |
1572 | ||
1573 | for_each_crtc_in_state(state, crtc, crtc_state, i) | |
1574 | drm_atomic_crtc_print_state(&p, crtc_state); | |
1575 | ||
1576 | for_each_connector_in_state(state, connector, connector_state, i) | |
1577 | drm_atomic_connector_print_state(&p, connector_state); | |
1578 | } | |
1579 | ||
d34f20d6 RC |
1580 | /* |
1581 | * The big monstor ioctl | |
1582 | */ | |
1583 | ||
1584 | static struct drm_pending_vblank_event *create_vblank_event( | |
1b47aaf9 | 1585 | struct drm_device *dev, struct drm_file *file_priv, |
f54d1867 | 1586 | struct dma_fence *fence, uint64_t user_data) |
d34f20d6 RC |
1587 | { |
1588 | struct drm_pending_vblank_event *e = NULL; | |
2dd500f1 | 1589 | int ret; |
d34f20d6 RC |
1590 | |
1591 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
2dd500f1 DV |
1592 | if (!e) |
1593 | return NULL; | |
d34f20d6 RC |
1594 | |
1595 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
2dd500f1 | 1596 | e->event.base.length = sizeof(e->event); |
d34f20d6 | 1597 | e->event.user_data = user_data; |
d34f20d6 | 1598 | |
1b47aaf9 GP |
1599 | if (file_priv) { |
1600 | ret = drm_event_reserve_init(dev, file_priv, &e->base, | |
1601 | &e->event.base); | |
1602 | if (ret) { | |
1603 | kfree(e); | |
1604 | return NULL; | |
1605 | } | |
2dd500f1 | 1606 | } |
d34f20d6 | 1607 | |
1b47aaf9 GP |
1608 | e->base.fence = fence; |
1609 | ||
2dd500f1 | 1610 | return e; |
d34f20d6 RC |
1611 | } |
1612 | ||
1613 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1614 | struct drm_mode_object *obj, struct drm_property *prop, | |
1615 | uint64_t prop_value) | |
1616 | { | |
1617 | struct drm_mode_object *ref; | |
1618 | int ret; | |
1619 | ||
1620 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1621 | return -EINVAL; | |
1622 | ||
1623 | switch (obj->type) { | |
1624 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1625 | struct drm_connector *connector = obj_to_connector(obj); | |
1626 | struct drm_connector_state *connector_state; | |
1627 | ||
1628 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1629 | if (IS_ERR(connector_state)) { | |
1630 | ret = PTR_ERR(connector_state); | |
1631 | break; | |
1632 | } | |
1633 | ||
1634 | ret = drm_atomic_connector_set_property(connector, | |
1635 | connector_state, prop, prop_value); | |
1636 | break; | |
1637 | } | |
1638 | case DRM_MODE_OBJECT_CRTC: { | |
1639 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1640 | struct drm_crtc_state *crtc_state; | |
1641 | ||
1642 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1643 | if (IS_ERR(crtc_state)) { | |
1644 | ret = PTR_ERR(crtc_state); | |
1645 | break; | |
1646 | } | |
1647 | ||
1648 | ret = drm_atomic_crtc_set_property(crtc, | |
1649 | crtc_state, prop, prop_value); | |
1650 | break; | |
1651 | } | |
1652 | case DRM_MODE_OBJECT_PLANE: { | |
1653 | struct drm_plane *plane = obj_to_plane(obj); | |
1654 | struct drm_plane_state *plane_state; | |
1655 | ||
1656 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1657 | if (IS_ERR(plane_state)) { | |
1658 | ret = PTR_ERR(plane_state); | |
1659 | break; | |
1660 | } | |
1661 | ||
1662 | ret = drm_atomic_plane_set_property(plane, | |
1663 | plane_state, prop, prop_value); | |
1664 | break; | |
1665 | } | |
1666 | default: | |
1667 | ret = -EINVAL; | |
1668 | break; | |
1669 | } | |
1670 | ||
1671 | drm_property_change_valid_put(prop, ref); | |
1672 | return ret; | |
1673 | } | |
1674 | ||
0f45c26f | 1675 | /** |
9744bf41 | 1676 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1677 | * |
1678 | * @dev: drm device to check. | |
1679 | * @plane_mask: plane mask for planes that were updated. | |
1680 | * @ret: return value, can be -EDEADLK for a retry. | |
1681 | * | |
1682 | * Before doing an update plane->old_fb is set to plane->fb, | |
1683 | * but before dropping the locks old_fb needs to be set to NULL | |
1684 | * and plane->fb updated. This is a common operation for each | |
1685 | * atomic update, so this call is split off as a helper. | |
1686 | */ | |
1687 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1688 | unsigned plane_mask, | |
1689 | int ret) | |
1690 | { | |
1691 | struct drm_plane *plane; | |
1692 | ||
1693 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1694 | * locks (ie. while it is still safe to deref plane->state). We | |
1695 | * need to do this here because the driver entry points cannot | |
1696 | * distinguish between legacy and atomic ioctls. | |
1697 | */ | |
1698 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1699 | if (ret == 0) { | |
1700 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1701 | if (new_fb) | |
1702 | drm_framebuffer_reference(new_fb); | |
1703 | plane->fb = new_fb; | |
1704 | plane->crtc = plane->state->crtc; | |
1705 | ||
1706 | if (plane->old_fb) | |
1707 | drm_framebuffer_unreference(plane->old_fb); | |
1708 | } | |
1709 | plane->old_fb = NULL; | |
1710 | } | |
1711 | } | |
1712 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1713 | ||
d34f20d6 RC |
1714 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
1715 | void *data, struct drm_file *file_priv) | |
1716 | { | |
1717 | struct drm_mode_atomic *arg = data; | |
1718 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
1719 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
1720 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
1721 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
1722 | unsigned int copied_objs, copied_props; | |
1723 | struct drm_atomic_state *state; | |
1724 | struct drm_modeset_acquire_ctx ctx; | |
1725 | struct drm_plane *plane; | |
df63b999 ACO |
1726 | struct drm_crtc *crtc; |
1727 | struct drm_crtc_state *crtc_state; | |
45723728 | 1728 | unsigned plane_mask; |
d34f20d6 | 1729 | int ret = 0; |
f92f053b | 1730 | unsigned int i, j; |
d34f20d6 RC |
1731 | |
1732 | /* disallow for drivers not supporting atomic: */ | |
1733 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1734 | return -EINVAL; | |
1735 | ||
1736 | /* disallow for userspace that has not enabled atomic cap (even | |
1737 | * though this may be a bit overkill, since legacy userspace | |
1738 | * wouldn't know how to call this ioctl) | |
1739 | */ | |
1740 | if (!file_priv->atomic) | |
1741 | return -EINVAL; | |
1742 | ||
1743 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
1744 | return -EINVAL; | |
1745 | ||
1746 | if (arg->reserved) | |
1747 | return -EINVAL; | |
1748 | ||
1749 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
1750 | !dev->mode_config.async_page_flip) | |
1751 | return -EINVAL; | |
1752 | ||
1753 | /* can't test and expect an event at the same time. */ | |
1754 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
1755 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1756 | return -EINVAL; | |
1757 | ||
1758 | drm_modeset_acquire_init(&ctx, 0); | |
1759 | ||
1760 | state = drm_atomic_state_alloc(dev); | |
1761 | if (!state) | |
1762 | return -ENOMEM; | |
1763 | ||
1764 | state->acquire_ctx = &ctx; | |
1765 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
1766 | ||
1767 | retry: | |
45723728 | 1768 | plane_mask = 0; |
d34f20d6 RC |
1769 | copied_objs = 0; |
1770 | copied_props = 0; | |
1771 | ||
1772 | for (i = 0; i < arg->count_objs; i++) { | |
1773 | uint32_t obj_id, count_props; | |
1774 | struct drm_mode_object *obj; | |
1775 | ||
1776 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
1777 | ret = -EFAULT; | |
ec9f932e | 1778 | goto out; |
d34f20d6 RC |
1779 | } |
1780 | ||
1781 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
b164d31f DA |
1782 | if (!obj) { |
1783 | ret = -ENOENT; | |
1784 | goto out; | |
1785 | } | |
1786 | ||
1787 | if (!obj->properties) { | |
1788 | drm_mode_object_unreference(obj); | |
d34f20d6 | 1789 | ret = -ENOENT; |
ec9f932e | 1790 | goto out; |
d34f20d6 RC |
1791 | } |
1792 | ||
d34f20d6 | 1793 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
b164d31f | 1794 | drm_mode_object_unreference(obj); |
d34f20d6 | 1795 | ret = -EFAULT; |
ec9f932e | 1796 | goto out; |
d34f20d6 RC |
1797 | } |
1798 | ||
1799 | copied_objs++; | |
1800 | ||
1801 | for (j = 0; j < count_props; j++) { | |
1802 | uint32_t prop_id; | |
1803 | uint64_t prop_value; | |
1804 | struct drm_property *prop; | |
1805 | ||
1806 | if (get_user(prop_id, props_ptr + copied_props)) { | |
b164d31f | 1807 | drm_mode_object_unreference(obj); |
d34f20d6 | 1808 | ret = -EFAULT; |
ec9f932e | 1809 | goto out; |
d34f20d6 RC |
1810 | } |
1811 | ||
f92f053b | 1812 | prop = drm_mode_obj_find_prop_id(obj, prop_id); |
d34f20d6 | 1813 | if (!prop) { |
b164d31f | 1814 | drm_mode_object_unreference(obj); |
d34f20d6 | 1815 | ret = -ENOENT; |
ec9f932e | 1816 | goto out; |
d34f20d6 RC |
1817 | } |
1818 | ||
42c5814c GR |
1819 | if (copy_from_user(&prop_value, |
1820 | prop_values_ptr + copied_props, | |
1821 | sizeof(prop_value))) { | |
b164d31f | 1822 | drm_mode_object_unreference(obj); |
d34f20d6 | 1823 | ret = -EFAULT; |
ec9f932e | 1824 | goto out; |
d34f20d6 RC |
1825 | } |
1826 | ||
1827 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
b164d31f DA |
1828 | if (ret) { |
1829 | drm_mode_object_unreference(obj); | |
ec9f932e | 1830 | goto out; |
b164d31f | 1831 | } |
d34f20d6 RC |
1832 | |
1833 | copied_props++; | |
1834 | } | |
a9cc54ee | 1835 | |
c4749c9a ML |
1836 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
1837 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
1838 | plane = obj_to_plane(obj); |
1839 | plane_mask |= (1 << drm_plane_index(plane)); | |
1840 | plane->old_fb = plane->fb; | |
1841 | } | |
b164d31f | 1842 | drm_mode_object_unreference(obj); |
d34f20d6 RC |
1843 | } |
1844 | ||
1845 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
df63b999 | 1846 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
d34f20d6 RC |
1847 | struct drm_pending_vblank_event *e; |
1848 | ||
1b47aaf9 GP |
1849 | e = create_vblank_event(dev, file_priv, NULL, |
1850 | arg->user_data); | |
d34f20d6 RC |
1851 | if (!e) { |
1852 | ret = -ENOMEM; | |
ec9f932e | 1853 | goto out; |
d34f20d6 RC |
1854 | } |
1855 | ||
1856 | crtc_state->event = e; | |
1857 | } | |
1858 | } | |
1859 | ||
1860 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
c4749c9a ML |
1861 | /* |
1862 | * Unlike commit, check_only does not clean up state. | |
0853695c | 1863 | * Below we call drm_atomic_state_put for it. |
c4749c9a | 1864 | */ |
d34f20d6 | 1865 | ret = drm_atomic_check_only(state); |
d34f20d6 | 1866 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
b837ba0a | 1867 | ret = drm_atomic_nonblocking_commit(state); |
d34f20d6 | 1868 | } else { |
fceffb32 RC |
1869 | if (unlikely(drm_debug & DRM_UT_STATE)) |
1870 | drm_atomic_print_state(state); | |
1871 | ||
d34f20d6 RC |
1872 | ret = drm_atomic_commit(state); |
1873 | } | |
1874 | ||
ec9f932e | 1875 | out: |
0f45c26f | 1876 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 1877 | |
c4749c9a ML |
1878 | if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
1879 | /* | |
1880 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive, | |
1881 | * if they weren't, this code should be called on success | |
1882 | * for TEST_ONLY too. | |
1883 | */ | |
1884 | ||
1885 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1886 | if (!crtc_state->event) | |
1887 | continue; | |
1888 | ||
2dd500f1 | 1889 | drm_event_cancel_free(dev, &crtc_state->event->base); |
c4749c9a ML |
1890 | } |
1891 | } | |
1892 | ||
ec9f932e ML |
1893 | if (ret == -EDEADLK) { |
1894 | drm_atomic_state_clear(state); | |
1895 | drm_modeset_backoff(&ctx); | |
1896 | goto retry; | |
1897 | } | |
d34f20d6 | 1898 | |
0853695c | 1899 | drm_atomic_state_put(state); |
d34f20d6 RC |
1900 | |
1901 | drm_modeset_drop_locks(&ctx); | |
1902 | drm_modeset_acquire_fini(&ctx); | |
1903 | ||
1904 | return ret; | |
d34f20d6 | 1905 | } |