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cc4ceb48 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
21 | * OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Rob Clark <robdclark@gmail.com> | |
25 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
26 | */ | |
27 | ||
28 | ||
29 | #include <drm/drmP.h> | |
30 | #include <drm/drm_atomic.h> | |
5488dc16 | 31 | #include <drm/drm_mode.h> |
cc4ceb48 DV |
32 | #include <drm/drm_plane_helper.h> |
33 | ||
be35f94f TR |
34 | #include "drm_crtc_internal.h" |
35 | ||
036ef573 ML |
36 | /** |
37 | * drm_atomic_state_default_release - | |
38 | * release memory initialized by drm_atomic_state_init | |
39 | * @state: atomic state | |
40 | * | |
41 | * Free all the memory allocated by drm_atomic_state_init. | |
42 | * This is useful for drivers that subclass the atomic state. | |
43 | */ | |
44 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
45 | { |
46 | kfree(state->connectors); | |
47 | kfree(state->connector_states); | |
48 | kfree(state->crtcs); | |
49 | kfree(state->crtc_states); | |
50 | kfree(state->planes); | |
51 | kfree(state->plane_states); | |
cc4ceb48 | 52 | } |
036ef573 | 53 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
54 | |
55 | /** | |
036ef573 | 56 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 57 | * @dev: DRM device |
036ef573 | 58 | * @state: atomic state |
cc4ceb48 | 59 | * |
036ef573 ML |
60 | * Default implementation for filling in a new atomic state. |
61 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 62 | */ |
036ef573 ML |
63 | int |
64 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 65 | { |
d34f20d6 RC |
66 | /* TODO legacy paths should maybe do a better job about |
67 | * setting this appropriately? | |
68 | */ | |
69 | state->allow_modeset = true; | |
70 | ||
cc4ceb48 DV |
71 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
72 | sizeof(*state->crtcs), GFP_KERNEL); | |
73 | if (!state->crtcs) | |
74 | goto fail; | |
75 | state->crtc_states = kcalloc(dev->mode_config.num_crtc, | |
76 | sizeof(*state->crtc_states), GFP_KERNEL); | |
77 | if (!state->crtc_states) | |
78 | goto fail; | |
79 | state->planes = kcalloc(dev->mode_config.num_total_plane, | |
80 | sizeof(*state->planes), GFP_KERNEL); | |
81 | if (!state->planes) | |
82 | goto fail; | |
83 | state->plane_states = kcalloc(dev->mode_config.num_total_plane, | |
84 | sizeof(*state->plane_states), GFP_KERNEL); | |
85 | if (!state->plane_states) | |
86 | goto fail; | |
cc4ceb48 DV |
87 | |
88 | state->dev = dev; | |
89 | ||
036ef573 | 90 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 91 | |
036ef573 | 92 | return 0; |
cc4ceb48 | 93 | fail: |
036ef573 ML |
94 | drm_atomic_state_default_release(state); |
95 | return -ENOMEM; | |
96 | } | |
97 | EXPORT_SYMBOL(drm_atomic_state_init); | |
98 | ||
99 | /** | |
100 | * drm_atomic_state_alloc - allocate atomic state | |
101 | * @dev: DRM device | |
102 | * | |
103 | * This allocates an empty atomic state to track updates. | |
104 | */ | |
105 | struct drm_atomic_state * | |
106 | drm_atomic_state_alloc(struct drm_device *dev) | |
107 | { | |
108 | struct drm_mode_config *config = &dev->mode_config; | |
109 | struct drm_atomic_state *state; | |
110 | ||
111 | if (!config->funcs->atomic_state_alloc) { | |
112 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
113 | if (!state) | |
114 | return NULL; | |
115 | if (drm_atomic_state_init(dev, state) < 0) { | |
116 | kfree(state); | |
117 | return NULL; | |
118 | } | |
119 | return state; | |
120 | } | |
cc4ceb48 | 121 | |
036ef573 | 122 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
123 | } |
124 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
125 | ||
126 | /** | |
036ef573 | 127 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
128 | * @state: atomic state |
129 | * | |
036ef573 ML |
130 | * Default implementation for clearing atomic state. |
131 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 132 | */ |
036ef573 | 133 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
134 | { |
135 | struct drm_device *dev = state->dev; | |
6f75cea6 | 136 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
137 | int i; |
138 | ||
17a38d9c | 139 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 140 | |
f52b69f1 | 141 | for (i = 0; i < state->num_connector; i++) { |
cc4ceb48 DV |
142 | struct drm_connector *connector = state->connectors[i]; |
143 | ||
144 | if (!connector) | |
145 | continue; | |
146 | ||
d2307dea | 147 | connector->funcs->atomic_destroy_state(connector, |
cc4ceb48 | 148 | state->connector_states[i]); |
8a5c0bde | 149 | state->connectors[i] = NULL; |
9469244d | 150 | state->connector_states[i] = NULL; |
b164d31f | 151 | drm_connector_unreference(connector); |
cc4ceb48 DV |
152 | } |
153 | ||
6f75cea6 | 154 | for (i = 0; i < config->num_crtc; i++) { |
cc4ceb48 DV |
155 | struct drm_crtc *crtc = state->crtcs[i]; |
156 | ||
157 | if (!crtc) | |
158 | continue; | |
159 | ||
160 | crtc->funcs->atomic_destroy_state(crtc, | |
161 | state->crtc_states[i]); | |
8a5c0bde | 162 | state->crtcs[i] = NULL; |
9469244d | 163 | state->crtc_states[i] = NULL; |
cc4ceb48 DV |
164 | } |
165 | ||
6f75cea6 | 166 | for (i = 0; i < config->num_total_plane; i++) { |
cc4ceb48 DV |
167 | struct drm_plane *plane = state->planes[i]; |
168 | ||
169 | if (!plane) | |
170 | continue; | |
171 | ||
172 | plane->funcs->atomic_destroy_state(plane, | |
173 | state->plane_states[i]); | |
8a5c0bde | 174 | state->planes[i] = NULL; |
9469244d | 175 | state->plane_states[i] = NULL; |
cc4ceb48 DV |
176 | } |
177 | } | |
036ef573 ML |
178 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
179 | ||
180 | /** | |
181 | * drm_atomic_state_clear - clear state object | |
182 | * @state: atomic state | |
183 | * | |
184 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
185 | * all locks. So someone else could sneak in and change the current modeset | |
186 | * configuration. Which means that all the state assembled in @state is no | |
187 | * longer an atomic update to the current state, but to some arbitrary earlier | |
188 | * state. Which could break assumptions the driver's ->atomic_check likely | |
189 | * relies on. | |
190 | * | |
191 | * Hence we must clear all cached state and completely start over, using this | |
192 | * function. | |
193 | */ | |
194 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
195 | { | |
196 | struct drm_device *dev = state->dev; | |
197 | struct drm_mode_config *config = &dev->mode_config; | |
198 | ||
199 | if (config->funcs->atomic_state_clear) | |
200 | config->funcs->atomic_state_clear(state); | |
201 | else | |
202 | drm_atomic_state_default_clear(state); | |
203 | } | |
cc4ceb48 DV |
204 | EXPORT_SYMBOL(drm_atomic_state_clear); |
205 | ||
206 | /** | |
207 | * drm_atomic_state_free - free all memory for an atomic state | |
208 | * @state: atomic state to deallocate | |
209 | * | |
210 | * This frees all memory associated with an atomic state, including all the | |
211 | * per-object state for planes, crtcs and connectors. | |
212 | */ | |
213 | void drm_atomic_state_free(struct drm_atomic_state *state) | |
214 | { | |
036ef573 ML |
215 | struct drm_device *dev; |
216 | struct drm_mode_config *config; | |
217 | ||
a0211bb4 ACO |
218 | if (!state) |
219 | return; | |
220 | ||
036ef573 ML |
221 | dev = state->dev; |
222 | config = &dev->mode_config; | |
223 | ||
cc4ceb48 DV |
224 | drm_atomic_state_clear(state); |
225 | ||
17a38d9c | 226 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 227 | |
036ef573 ML |
228 | if (config->funcs->atomic_state_free) { |
229 | config->funcs->atomic_state_free(state); | |
230 | } else { | |
231 | drm_atomic_state_default_release(state); | |
232 | kfree(state); | |
233 | } | |
cc4ceb48 DV |
234 | } |
235 | EXPORT_SYMBOL(drm_atomic_state_free); | |
236 | ||
237 | /** | |
238 | * drm_atomic_get_crtc_state - get crtc state | |
239 | * @state: global atomic state object | |
240 | * @crtc: crtc to get state object for | |
241 | * | |
242 | * This function returns the crtc state for the given crtc, allocating it if | |
243 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
244 | * is consistent. | |
245 | * | |
246 | * Returns: | |
247 | * | |
248 | * Either the allocated state or the error code encoded into the pointer. When | |
249 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
250 | * entire atomic sequence must be restarted. All other errors are fatal. | |
251 | */ | |
252 | struct drm_crtc_state * | |
253 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
254 | struct drm_crtc *crtc) | |
255 | { | |
1b26a5e1 | 256 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
257 | struct drm_crtc_state *crtc_state; |
258 | ||
7f4eaa89 ML |
259 | WARN_ON(!state->acquire_ctx); |
260 | ||
1b26a5e1 ML |
261 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
262 | if (crtc_state) | |
263 | return crtc_state; | |
cc4ceb48 DV |
264 | |
265 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
266 | if (ret) | |
267 | return ERR_PTR(ret); | |
268 | ||
269 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
270 | if (!crtc_state) | |
271 | return ERR_PTR(-ENOMEM); | |
272 | ||
273 | state->crtc_states[index] = crtc_state; | |
274 | state->crtcs[index] = crtc; | |
275 | crtc_state->state = state; | |
276 | ||
fa3ab4c2 VS |
277 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
278 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
279 | |
280 | return crtc_state; | |
281 | } | |
282 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
283 | ||
819364da DS |
284 | /** |
285 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
286 | * @state: the CRTC whose incoming state to update | |
287 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
288 | * | |
289 | * Set a mode (originating from the kernel) on the desired CRTC state. Does | |
290 | * not change any other state properties, including enable, active, or | |
291 | * mode_changed. | |
292 | * | |
293 | * RETURNS: | |
294 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
295 | */ | |
296 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
297 | struct drm_display_mode *mode) | |
298 | { | |
99cf4a29 DS |
299 | struct drm_mode_modeinfo umode; |
300 | ||
819364da DS |
301 | /* Early return for no change. */ |
302 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
303 | return 0; | |
304 | ||
5f911905 | 305 | drm_property_unreference_blob(state->mode_blob); |
99cf4a29 DS |
306 | state->mode_blob = NULL; |
307 | ||
819364da | 308 | if (mode) { |
99cf4a29 DS |
309 | drm_mode_convert_to_umode(&umode, mode); |
310 | state->mode_blob = | |
311 | drm_property_create_blob(state->crtc->dev, | |
312 | sizeof(umode), | |
313 | &umode); | |
314 | if (IS_ERR(state->mode_blob)) | |
315 | return PTR_ERR(state->mode_blob); | |
316 | ||
819364da DS |
317 | drm_mode_copy(&state->mode, mode); |
318 | state->enable = true; | |
319 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
320 | mode->name, state); | |
321 | } else { | |
322 | memset(&state->mode, 0, sizeof(state->mode)); | |
323 | state->enable = false; | |
324 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
325 | state); | |
326 | } | |
327 | ||
328 | return 0; | |
329 | } | |
330 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
331 | ||
955f3c33 DS |
332 | /** |
333 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
334 | * @state: the CRTC whose incoming state to update | |
335 | * @blob: pointer to blob property to use for mode | |
336 | * | |
337 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
338 | * This function will take a reference on the blob property for the CRTC state, | |
339 | * and release the reference held on the state's existing mode property, if any | |
340 | * was set. | |
341 | * | |
342 | * RETURNS: | |
343 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
344 | */ | |
345 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
346 | struct drm_property_blob *blob) | |
347 | { | |
348 | if (blob == state->mode_blob) | |
349 | return 0; | |
350 | ||
5f911905 | 351 | drm_property_unreference_blob(state->mode_blob); |
955f3c33 DS |
352 | state->mode_blob = NULL; |
353 | ||
354 | if (blob) { | |
355 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
356 | drm_mode_convert_umode(&state->mode, | |
357 | (const struct drm_mode_modeinfo *) | |
358 | blob->data)) | |
359 | return -EINVAL; | |
360 | ||
361 | state->mode_blob = drm_property_reference_blob(blob); | |
362 | state->enable = true; | |
363 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
364 | state->mode.name, state); | |
365 | } else { | |
366 | memset(&state->mode, 0, sizeof(state->mode)); | |
367 | state->enable = false; | |
368 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
369 | state); | |
370 | } | |
371 | ||
372 | return 0; | |
373 | } | |
374 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
375 | ||
5488dc16 LL |
376 | /** |
377 | * drm_atomic_replace_property_blob - replace a blob property | |
378 | * @blob: a pointer to the member blob to be replaced | |
379 | * @new_blob: the new blob to replace with | |
5488dc16 LL |
380 | * @replaced: whether the blob has been replaced |
381 | * | |
382 | * RETURNS: | |
383 | * Zero on success, error code on failure | |
384 | */ | |
385 | static void | |
386 | drm_atomic_replace_property_blob(struct drm_property_blob **blob, | |
387 | struct drm_property_blob *new_blob, | |
388 | bool *replaced) | |
389 | { | |
390 | struct drm_property_blob *old_blob = *blob; | |
391 | ||
392 | if (old_blob == new_blob) | |
393 | return; | |
394 | ||
395 | if (old_blob) | |
396 | drm_property_unreference_blob(old_blob); | |
397 | if (new_blob) | |
398 | drm_property_reference_blob(new_blob); | |
399 | *blob = new_blob; | |
400 | *replaced = true; | |
401 | ||
402 | return; | |
403 | } | |
404 | ||
405 | static int | |
406 | drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc, | |
407 | struct drm_property_blob **blob, | |
408 | uint64_t blob_id, | |
409 | ssize_t expected_size, | |
410 | bool *replaced) | |
411 | { | |
412 | struct drm_device *dev = crtc->dev; | |
413 | struct drm_property_blob *new_blob = NULL; | |
414 | ||
415 | if (blob_id != 0) { | |
416 | new_blob = drm_property_lookup_blob(dev, blob_id); | |
417 | if (new_blob == NULL) | |
418 | return -EINVAL; | |
419 | if (expected_size > 0 && expected_size != new_blob->length) | |
420 | return -EINVAL; | |
421 | } | |
422 | ||
423 | drm_atomic_replace_property_blob(blob, new_blob, replaced); | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
40ecc694 RC |
428 | /** |
429 | * drm_atomic_crtc_set_property - set property on CRTC | |
430 | * @crtc: the drm CRTC to set a property on | |
431 | * @state: the state object to update with the new property value | |
432 | * @property: the property to set | |
433 | * @val: the new property value | |
434 | * | |
435 | * Use this instead of calling crtc->atomic_set_property directly. | |
436 | * This function handles generic/core properties and calls out to | |
437 | * driver's ->atomic_set_property() for driver properties. To ensure | |
438 | * consistent behavior you must call this function rather than the | |
439 | * driver hook directly. | |
440 | * | |
441 | * RETURNS: | |
442 | * Zero on success, error code on failure | |
443 | */ | |
444 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
445 | struct drm_crtc_state *state, struct drm_property *property, | |
446 | uint64_t val) | |
447 | { | |
eab3bbef DV |
448 | struct drm_device *dev = crtc->dev; |
449 | struct drm_mode_config *config = &dev->mode_config; | |
5488dc16 | 450 | bool replaced = false; |
955f3c33 | 451 | int ret; |
eab3bbef | 452 | |
27798365 | 453 | if (property == config->prop_active) |
eab3bbef | 454 | state->active = val; |
955f3c33 DS |
455 | else if (property == config->prop_mode_id) { |
456 | struct drm_property_blob *mode = | |
457 | drm_property_lookup_blob(dev, val); | |
458 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
5f911905 | 459 | drm_property_unreference_blob(mode); |
955f3c33 | 460 | return ret; |
5488dc16 LL |
461 | } else if (property == config->degamma_lut_property) { |
462 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
463 | &state->degamma_lut, | |
464 | val, | |
465 | -1, | |
466 | &replaced); | |
467 | state->color_mgmt_changed = replaced; | |
468 | return ret; | |
469 | } else if (property == config->ctm_property) { | |
470 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
471 | &state->ctm, | |
472 | val, | |
473 | sizeof(struct drm_color_ctm), | |
474 | &replaced); | |
475 | state->color_mgmt_changed = replaced; | |
476 | return ret; | |
477 | } else if (property == config->gamma_lut_property) { | |
478 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
479 | &state->gamma_lut, | |
480 | val, | |
481 | -1, | |
482 | &replaced); | |
483 | state->color_mgmt_changed = replaced; | |
484 | return ret; | |
485 | } else if (crtc->funcs->atomic_set_property) | |
40ecc694 | 486 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
487 | else |
488 | return -EINVAL; | |
489 | ||
490 | return 0; | |
40ecc694 RC |
491 | } |
492 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
493 | ||
c0714fc9 DV |
494 | /** |
495 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
496 | * @crtc: the drm CRTC to set a property on | |
497 | * @state: the state object to get the property value from | |
498 | * @property: the property to set | |
499 | * @val: return location for the property value | |
500 | * | |
ac9c9256 RC |
501 | * This function handles generic/core properties and calls out to |
502 | * driver's ->atomic_get_property() for driver properties. To ensure | |
503 | * consistent behavior you must call this function rather than the | |
504 | * driver hook directly. | |
c0714fc9 DV |
505 | * |
506 | * RETURNS: | |
507 | * Zero on success, error code on failure | |
ac9c9256 | 508 | */ |
bf22f3be GT |
509 | static int |
510 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
511 | const struct drm_crtc_state *state, |
512 | struct drm_property *property, uint64_t *val) | |
513 | { | |
8f164ce4 DS |
514 | struct drm_device *dev = crtc->dev; |
515 | struct drm_mode_config *config = &dev->mode_config; | |
516 | ||
517 | if (property == config->prop_active) | |
518 | *val = state->active; | |
955f3c33 DS |
519 | else if (property == config->prop_mode_id) |
520 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
5488dc16 LL |
521 | else if (property == config->degamma_lut_property) |
522 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
523 | else if (property == config->ctm_property) | |
524 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
525 | else if (property == config->gamma_lut_property) | |
526 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
8f164ce4 | 527 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 528 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
529 | else |
530 | return -EINVAL; | |
531 | ||
532 | return 0; | |
ac9c9256 | 533 | } |
ac9c9256 | 534 | |
5e743737 RC |
535 | /** |
536 | * drm_atomic_crtc_check - check crtc state | |
537 | * @crtc: crtc to check | |
538 | * @state: crtc state to check | |
539 | * | |
540 | * Provides core sanity checks for crtc state. | |
541 | * | |
542 | * RETURNS: | |
543 | * Zero on success, error code on failure | |
544 | */ | |
545 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
546 | struct drm_crtc_state *state) | |
547 | { | |
548 | /* NOTE: we explicitly don't enforce constraints such as primary | |
549 | * layer covering entire screen, since that is something we want | |
550 | * to allow (on hw that supports it). For hw that does not, it | |
551 | * should be checked in driver's crtc->atomic_check() vfunc. | |
552 | * | |
553 | * TODO: Add generic modeset state checks once we support those. | |
554 | */ | |
eab3bbef DV |
555 | |
556 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
557 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
558 | crtc->base.id, crtc->name); | |
eab3bbef DV |
559 | return -EINVAL; |
560 | } | |
561 | ||
99cf4a29 DS |
562 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
563 | * as this is a kernel-internal detail that userspace should never | |
564 | * be able to trigger. */ | |
565 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
566 | WARN_ON(state->enable && !state->mode_blob)) { | |
fa3ab4c2 VS |
567 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
568 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
569 | return -EINVAL; |
570 | } | |
571 | ||
572 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
573 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
574 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
575 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
576 | return -EINVAL; |
577 | } | |
578 | ||
4cba6850 DV |
579 | /* |
580 | * Reject event generation for when a CRTC is off and stays off. | |
581 | * It wouldn't be hard to implement this, but userspace has a track | |
582 | * record of happily burning through 100% cpu (or worse, crash) when the | |
583 | * display pipe is suspended. To avoid all that fun just reject updates | |
584 | * that ask for events since likely that indicates a bug in the | |
585 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
586 | * and legacy page_flip IOCTL which also reject service on a disabled | |
587 | * pipe. | |
588 | */ | |
589 | if (state->event && !state->active && !crtc->state->active) { | |
590 | DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n", | |
591 | crtc->base.id); | |
592 | return -EINVAL; | |
593 | } | |
594 | ||
5e743737 RC |
595 | return 0; |
596 | } | |
597 | ||
cc4ceb48 DV |
598 | /** |
599 | * drm_atomic_get_plane_state - get plane state | |
600 | * @state: global atomic state object | |
601 | * @plane: plane to get state object for | |
602 | * | |
603 | * This function returns the plane state for the given plane, allocating it if | |
604 | * needed. It will also grab the relevant plane lock to make sure that the state | |
605 | * is consistent. | |
606 | * | |
607 | * Returns: | |
608 | * | |
609 | * Either the allocated state or the error code encoded into the pointer. When | |
610 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
611 | * entire atomic sequence must be restarted. All other errors are fatal. | |
612 | */ | |
613 | struct drm_plane_state * | |
614 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
615 | struct drm_plane *plane) | |
616 | { | |
1b26a5e1 | 617 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
618 | struct drm_plane_state *plane_state; |
619 | ||
7f4eaa89 ML |
620 | WARN_ON(!state->acquire_ctx); |
621 | ||
1b26a5e1 ML |
622 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
623 | if (plane_state) | |
624 | return plane_state; | |
cc4ceb48 | 625 | |
4d02e2de | 626 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
627 | if (ret) |
628 | return ERR_PTR(ret); | |
629 | ||
630 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
631 | if (!plane_state) | |
632 | return ERR_PTR(-ENOMEM); | |
633 | ||
634 | state->plane_states[index] = plane_state; | |
635 | state->planes[index] = plane; | |
636 | plane_state->state = state; | |
637 | ||
9f4c97a2 VS |
638 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
639 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
640 | |
641 | if (plane_state->crtc) { | |
642 | struct drm_crtc_state *crtc_state; | |
643 | ||
644 | crtc_state = drm_atomic_get_crtc_state(state, | |
645 | plane_state->crtc); | |
646 | if (IS_ERR(crtc_state)) | |
647 | return ERR_CAST(crtc_state); | |
648 | } | |
649 | ||
650 | return plane_state; | |
651 | } | |
652 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
653 | ||
40ecc694 RC |
654 | /** |
655 | * drm_atomic_plane_set_property - set property on plane | |
656 | * @plane: the drm plane to set a property on | |
657 | * @state: the state object to update with the new property value | |
658 | * @property: the property to set | |
659 | * @val: the new property value | |
660 | * | |
661 | * Use this instead of calling plane->atomic_set_property directly. | |
662 | * This function handles generic/core properties and calls out to | |
663 | * driver's ->atomic_set_property() for driver properties. To ensure | |
664 | * consistent behavior you must call this function rather than the | |
665 | * driver hook directly. | |
666 | * | |
667 | * RETURNS: | |
668 | * Zero on success, error code on failure | |
669 | */ | |
670 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
671 | struct drm_plane_state *state, struct drm_property *property, | |
672 | uint64_t val) | |
673 | { | |
6b4959f4 RC |
674 | struct drm_device *dev = plane->dev; |
675 | struct drm_mode_config *config = &dev->mode_config; | |
676 | ||
677 | if (property == config->prop_fb_id) { | |
678 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
679 | drm_atomic_set_fb_for_plane(state, fb); | |
680 | if (fb) | |
681 | drm_framebuffer_unreference(fb); | |
682 | } else if (property == config->prop_crtc_id) { | |
683 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
684 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
685 | } else if (property == config->prop_crtc_x) { | |
686 | state->crtc_x = U642I64(val); | |
687 | } else if (property == config->prop_crtc_y) { | |
688 | state->crtc_y = U642I64(val); | |
689 | } else if (property == config->prop_crtc_w) { | |
690 | state->crtc_w = val; | |
691 | } else if (property == config->prop_crtc_h) { | |
692 | state->crtc_h = val; | |
693 | } else if (property == config->prop_src_x) { | |
694 | state->src_x = val; | |
695 | } else if (property == config->prop_src_y) { | |
696 | state->src_y = val; | |
697 | } else if (property == config->prop_src_w) { | |
698 | state->src_w = val; | |
699 | } else if (property == config->prop_src_h) { | |
700 | state->src_h = val; | |
1da30627 MR |
701 | } else if (property == config->rotation_property) { |
702 | state->rotation = val; | |
6b4959f4 RC |
703 | } else if (plane->funcs->atomic_set_property) { |
704 | return plane->funcs->atomic_set_property(plane, state, | |
705 | property, val); | |
706 | } else { | |
707 | return -EINVAL; | |
708 | } | |
709 | ||
710 | return 0; | |
40ecc694 RC |
711 | } |
712 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
713 | ||
c0714fc9 DV |
714 | /** |
715 | * drm_atomic_plane_get_property - get property value from plane state | |
716 | * @plane: the drm plane to set a property on | |
717 | * @state: the state object to get the property value from | |
718 | * @property: the property to set | |
719 | * @val: return location for the property value | |
720 | * | |
ac9c9256 RC |
721 | * This function handles generic/core properties and calls out to |
722 | * driver's ->atomic_get_property() for driver properties. To ensure | |
723 | * consistent behavior you must call this function rather than the | |
724 | * driver hook directly. | |
c0714fc9 DV |
725 | * |
726 | * RETURNS: | |
727 | * Zero on success, error code on failure | |
ac9c9256 | 728 | */ |
a97df1cc DV |
729 | static int |
730 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
731 | const struct drm_plane_state *state, |
732 | struct drm_property *property, uint64_t *val) | |
733 | { | |
6b4959f4 RC |
734 | struct drm_device *dev = plane->dev; |
735 | struct drm_mode_config *config = &dev->mode_config; | |
736 | ||
737 | if (property == config->prop_fb_id) { | |
738 | *val = (state->fb) ? state->fb->base.id : 0; | |
739 | } else if (property == config->prop_crtc_id) { | |
740 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
741 | } else if (property == config->prop_crtc_x) { | |
742 | *val = I642U64(state->crtc_x); | |
743 | } else if (property == config->prop_crtc_y) { | |
744 | *val = I642U64(state->crtc_y); | |
745 | } else if (property == config->prop_crtc_w) { | |
746 | *val = state->crtc_w; | |
747 | } else if (property == config->prop_crtc_h) { | |
748 | *val = state->crtc_h; | |
749 | } else if (property == config->prop_src_x) { | |
750 | *val = state->src_x; | |
751 | } else if (property == config->prop_src_y) { | |
752 | *val = state->src_y; | |
753 | } else if (property == config->prop_src_w) { | |
754 | *val = state->src_w; | |
755 | } else if (property == config->prop_src_h) { | |
756 | *val = state->src_h; | |
4cda09ca TU |
757 | } else if (property == config->rotation_property) { |
758 | *val = state->rotation; | |
6b4959f4 | 759 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 760 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
761 | } else { |
762 | return -EINVAL; | |
763 | } | |
764 | ||
765 | return 0; | |
ac9c9256 | 766 | } |
ac9c9256 | 767 | |
f8aeb41c DV |
768 | static bool |
769 | plane_switching_crtc(struct drm_atomic_state *state, | |
770 | struct drm_plane *plane, | |
771 | struct drm_plane_state *plane_state) | |
772 | { | |
773 | if (!plane->state->crtc || !plane_state->crtc) | |
774 | return false; | |
775 | ||
776 | if (plane->state->crtc == plane_state->crtc) | |
777 | return false; | |
778 | ||
779 | /* This could be refined, but currently there's no helper or driver code | |
780 | * to implement direct switching of active planes nor userspace to take | |
781 | * advantage of more direct plane switching without the intermediate | |
782 | * full OFF state. | |
783 | */ | |
784 | return true; | |
785 | } | |
786 | ||
5e743737 RC |
787 | /** |
788 | * drm_atomic_plane_check - check plane state | |
789 | * @plane: plane to check | |
790 | * @state: plane state to check | |
791 | * | |
792 | * Provides core sanity checks for plane state. | |
793 | * | |
794 | * RETURNS: | |
795 | * Zero on success, error code on failure | |
796 | */ | |
797 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
798 | struct drm_plane_state *state) | |
799 | { | |
800 | unsigned int fb_width, fb_height; | |
ead8610d | 801 | int ret; |
5e743737 RC |
802 | |
803 | /* either *both* CRTC and FB must be set, or neither */ | |
804 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 805 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
806 | return -EINVAL; |
807 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 808 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
809 | return -EINVAL; |
810 | } | |
811 | ||
812 | /* if disabled, we don't care about the rest of the state: */ | |
813 | if (!state->crtc) | |
814 | return 0; | |
815 | ||
816 | /* Check whether this plane is usable on this CRTC */ | |
817 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 818 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
819 | return -EINVAL; |
820 | } | |
821 | ||
822 | /* Check whether this plane supports the fb pixel format. */ | |
ead8610d LP |
823 | ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format); |
824 | if (ret) { | |
17a38d9c DV |
825 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", |
826 | drm_get_format_name(state->fb->pixel_format)); | |
ead8610d | 827 | return ret; |
5e743737 RC |
828 | } |
829 | ||
830 | /* Give drivers some help against integer overflows */ | |
831 | if (state->crtc_w > INT_MAX || | |
832 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
833 | state->crtc_h > INT_MAX || | |
834 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
835 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
836 | state->crtc_w, state->crtc_h, | |
837 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
838 | return -ERANGE; |
839 | } | |
840 | ||
841 | fb_width = state->fb->width << 16; | |
842 | fb_height = state->fb->height << 16; | |
843 | ||
844 | /* Make sure source coordinates are inside the fb. */ | |
845 | if (state->src_w > fb_width || | |
846 | state->src_x > fb_width - state->src_w || | |
847 | state->src_h > fb_height || | |
848 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
849 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
850 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
851 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
852 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
853 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
854 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
855 | return -ENOSPC; |
856 | } | |
857 | ||
f8aeb41c | 858 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
859 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
860 | plane->base.id, plane->name); | |
f8aeb41c DV |
861 | return -EINVAL; |
862 | } | |
863 | ||
5e743737 RC |
864 | return 0; |
865 | } | |
866 | ||
cc4ceb48 DV |
867 | /** |
868 | * drm_atomic_get_connector_state - get connector state | |
869 | * @state: global atomic state object | |
870 | * @connector: connector to get state object for | |
871 | * | |
872 | * This function returns the connector state for the given connector, | |
873 | * allocating it if needed. It will also grab the relevant connector lock to | |
874 | * make sure that the state is consistent. | |
875 | * | |
876 | * Returns: | |
877 | * | |
878 | * Either the allocated state or the error code encoded into the pointer. When | |
879 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
880 | * entire atomic sequence must be restarted. All other errors are fatal. | |
881 | */ | |
882 | struct drm_connector_state * | |
883 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
884 | struct drm_connector *connector) | |
885 | { | |
886 | int ret, index; | |
887 | struct drm_mode_config *config = &connector->dev->mode_config; | |
888 | struct drm_connector_state *connector_state; | |
889 | ||
7f4eaa89 ML |
890 | WARN_ON(!state->acquire_ctx); |
891 | ||
c7eb76f4 DV |
892 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
893 | if (ret) | |
894 | return ERR_PTR(ret); | |
895 | ||
cc4ceb48 DV |
896 | index = drm_connector_index(connector); |
897 | ||
f52b69f1 | 898 | if (index >= state->num_connector) { |
5fff80bb ML |
899 | struct drm_connector **c; |
900 | struct drm_connector_state **cs; | |
901 | int alloc = max(index + 1, config->num_connector); | |
902 | ||
903 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
904 | if (!c) | |
905 | return ERR_PTR(-ENOMEM); | |
906 | ||
907 | state->connectors = c; | |
908 | memset(&state->connectors[state->num_connector], 0, | |
909 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
910 | ||
911 | cs = krealloc(state->connector_states, alloc * sizeof(*state->connector_states), GFP_KERNEL); | |
912 | if (!cs) | |
913 | return ERR_PTR(-ENOMEM); | |
914 | ||
915 | state->connector_states = cs; | |
916 | memset(&state->connector_states[state->num_connector], 0, | |
917 | sizeof(*state->connector_states) * (alloc - state->num_connector)); | |
918 | state->num_connector = alloc; | |
f52b69f1 DV |
919 | } |
920 | ||
cc4ceb48 DV |
921 | if (state->connector_states[index]) |
922 | return state->connector_states[index]; | |
923 | ||
cc4ceb48 DV |
924 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
925 | if (!connector_state) | |
926 | return ERR_PTR(-ENOMEM); | |
927 | ||
b164d31f | 928 | drm_connector_reference(connector); |
cc4ceb48 DV |
929 | state->connector_states[index] = connector_state; |
930 | state->connectors[index] = connector; | |
931 | connector_state->state = state; | |
932 | ||
17a38d9c DV |
933 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", |
934 | connector->base.id, connector_state, state); | |
cc4ceb48 DV |
935 | |
936 | if (connector_state->crtc) { | |
937 | struct drm_crtc_state *crtc_state; | |
938 | ||
939 | crtc_state = drm_atomic_get_crtc_state(state, | |
940 | connector_state->crtc); | |
941 | if (IS_ERR(crtc_state)) | |
942 | return ERR_CAST(crtc_state); | |
943 | } | |
944 | ||
945 | return connector_state; | |
946 | } | |
947 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
948 | ||
40ecc694 RC |
949 | /** |
950 | * drm_atomic_connector_set_property - set property on connector. | |
951 | * @connector: the drm connector to set a property on | |
952 | * @state: the state object to update with the new property value | |
953 | * @property: the property to set | |
954 | * @val: the new property value | |
955 | * | |
956 | * Use this instead of calling connector->atomic_set_property directly. | |
957 | * This function handles generic/core properties and calls out to | |
958 | * driver's ->atomic_set_property() for driver properties. To ensure | |
959 | * consistent behavior you must call this function rather than the | |
960 | * driver hook directly. | |
961 | * | |
962 | * RETURNS: | |
963 | * Zero on success, error code on failure | |
964 | */ | |
965 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
966 | struct drm_connector_state *state, struct drm_property *property, | |
967 | uint64_t val) | |
968 | { | |
969 | struct drm_device *dev = connector->dev; | |
970 | struct drm_mode_config *config = &dev->mode_config; | |
971 | ||
ae16c597 RC |
972 | if (property == config->prop_crtc_id) { |
973 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
974 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
975 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
976 | /* setting DPMS property requires special handling, which |
977 | * is done in legacy setprop path for us. Disallow (for | |
978 | * now?) atomic writes to DPMS property: | |
979 | */ | |
980 | return -EINVAL; | |
981 | } else if (connector->funcs->atomic_set_property) { | |
982 | return connector->funcs->atomic_set_property(connector, | |
983 | state, property, val); | |
984 | } else { | |
985 | return -EINVAL; | |
986 | } | |
987 | } | |
988 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
989 | ||
c0714fc9 DV |
990 | /** |
991 | * drm_atomic_connector_get_property - get property value from connector state | |
992 | * @connector: the drm connector to set a property on | |
993 | * @state: the state object to get the property value from | |
994 | * @property: the property to set | |
995 | * @val: return location for the property value | |
996 | * | |
ac9c9256 RC |
997 | * This function handles generic/core properties and calls out to |
998 | * driver's ->atomic_get_property() for driver properties. To ensure | |
999 | * consistent behavior you must call this function rather than the | |
1000 | * driver hook directly. | |
c0714fc9 DV |
1001 | * |
1002 | * RETURNS: | |
1003 | * Zero on success, error code on failure | |
ac9c9256 | 1004 | */ |
a97df1cc DV |
1005 | static int |
1006 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
1007 | const struct drm_connector_state *state, |
1008 | struct drm_property *property, uint64_t *val) | |
1009 | { | |
1010 | struct drm_device *dev = connector->dev; | |
1011 | struct drm_mode_config *config = &dev->mode_config; | |
1012 | ||
ae16c597 RC |
1013 | if (property == config->prop_crtc_id) { |
1014 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
1015 | } else if (property == config->dpms_property) { | |
ac9c9256 RC |
1016 | *val = connector->dpms; |
1017 | } else if (connector->funcs->atomic_get_property) { | |
1018 | return connector->funcs->atomic_get_property(connector, | |
1019 | state, property, val); | |
1020 | } else { | |
1021 | return -EINVAL; | |
1022 | } | |
1023 | ||
1024 | return 0; | |
1025 | } | |
ac9c9256 | 1026 | |
88a48e29 RC |
1027 | int drm_atomic_get_property(struct drm_mode_object *obj, |
1028 | struct drm_property *property, uint64_t *val) | |
1029 | { | |
1030 | struct drm_device *dev = property->dev; | |
1031 | int ret; | |
1032 | ||
1033 | switch (obj->type) { | |
1034 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1035 | struct drm_connector *connector = obj_to_connector(obj); | |
1036 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
1037 | ret = drm_atomic_connector_get_property(connector, | |
1038 | connector->state, property, val); | |
1039 | break; | |
1040 | } | |
1041 | case DRM_MODE_OBJECT_CRTC: { | |
1042 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1043 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1044 | ret = drm_atomic_crtc_get_property(crtc, | |
1045 | crtc->state, property, val); | |
1046 | break; | |
1047 | } | |
1048 | case DRM_MODE_OBJECT_PLANE: { | |
1049 | struct drm_plane *plane = obj_to_plane(obj); | |
1050 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
1051 | ret = drm_atomic_plane_get_property(plane, | |
1052 | plane->state, property, val); | |
1053 | break; | |
1054 | } | |
1055 | default: | |
1056 | ret = -EINVAL; | |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | return ret; | |
1061 | } | |
1062 | ||
cc4ceb48 DV |
1063 | /** |
1064 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 1065 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
1066 | * @crtc: crtc to use for the plane |
1067 | * | |
1068 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
1069 | * for the new crtc, as needed. This function takes care of all these details | |
1070 | * besides updating the pointer in the state object itself. | |
1071 | * | |
1072 | * Returns: | |
1073 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1074 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1075 | * sequence must be restarted. All other errors are fatal. | |
1076 | */ | |
1077 | int | |
07cc0ef6 DV |
1078 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
1079 | struct drm_crtc *crtc) | |
cc4ceb48 | 1080 | { |
07cc0ef6 | 1081 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
1082 | struct drm_crtc_state *crtc_state; |
1083 | ||
6ddd388a RC |
1084 | if (plane_state->crtc) { |
1085 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1086 | plane_state->crtc); | |
1087 | if (WARN_ON(IS_ERR(crtc_state))) | |
1088 | return PTR_ERR(crtc_state); | |
1089 | ||
1090 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1091 | } | |
1092 | ||
1093 | plane_state->crtc = crtc; | |
1094 | ||
cc4ceb48 DV |
1095 | if (crtc) { |
1096 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1097 | crtc); | |
1098 | if (IS_ERR(crtc_state)) | |
1099 | return PTR_ERR(crtc_state); | |
6ddd388a | 1100 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1101 | } |
1102 | ||
cc4ceb48 | 1103 | if (crtc) |
fa3ab4c2 VS |
1104 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1105 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1106 | else |
17a38d9c DV |
1107 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1108 | plane_state); | |
cc4ceb48 DV |
1109 | |
1110 | return 0; | |
1111 | } | |
1112 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1113 | ||
321ebf04 | 1114 | /** |
16d78bc2 | 1115 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1116 | * @plane_state: atomic state object for the plane |
1117 | * @fb: fb to use for the plane | |
1118 | * | |
1119 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1120 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1121 | * function takes care of all these details besides updating the pointer in the | |
1122 | * state object itself. | |
1123 | */ | |
1124 | void | |
1125 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1126 | struct drm_framebuffer *fb) | |
1127 | { | |
1128 | if (plane_state->fb) | |
1129 | drm_framebuffer_unreference(plane_state->fb); | |
1130 | if (fb) | |
1131 | drm_framebuffer_reference(fb); | |
1132 | plane_state->fb = fb; | |
1133 | ||
1134 | if (fb) | |
17a38d9c DV |
1135 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1136 | fb->base.id, plane_state); | |
321ebf04 | 1137 | else |
17a38d9c DV |
1138 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1139 | plane_state); | |
321ebf04 DV |
1140 | } |
1141 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1142 | ||
cc4ceb48 DV |
1143 | /** |
1144 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1145 | * @conn_state: atomic state object for the connector | |
1146 | * @crtc: crtc to use for the connector | |
1147 | * | |
1148 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1149 | * state for the new crtc, as needed. This function takes care of all these | |
1150 | * details besides updating the pointer in the state object itself. | |
1151 | * | |
1152 | * Returns: | |
1153 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1154 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1155 | * sequence must be restarted. All other errors are fatal. | |
1156 | */ | |
1157 | int | |
1158 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1159 | struct drm_crtc *crtc) | |
1160 | { | |
1161 | struct drm_crtc_state *crtc_state; | |
1162 | ||
e2d800a3 CW |
1163 | if (conn_state->crtc == crtc) |
1164 | return 0; | |
1165 | ||
1166 | if (conn_state->crtc) { | |
4cd9fa52 ML |
1167 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, |
1168 | conn_state->crtc); | |
1169 | ||
1170 | crtc_state->connector_mask &= | |
1171 | ~(1 << drm_connector_index(conn_state->connector)); | |
e2d800a3 CW |
1172 | |
1173 | drm_connector_unreference(conn_state->connector); | |
1174 | conn_state->crtc = NULL; | |
4cd9fa52 ML |
1175 | } |
1176 | ||
cc4ceb48 DV |
1177 | if (crtc) { |
1178 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1179 | if (IS_ERR(crtc_state)) | |
1180 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1181 | |
1182 | crtc_state->connector_mask |= | |
1183 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 | 1184 | |
e2d800a3 CW |
1185 | drm_connector_reference(conn_state->connector); |
1186 | conn_state->crtc = crtc; | |
cc4ceb48 | 1187 | |
fa3ab4c2 VS |
1188 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1189 | conn_state, crtc->base.id, crtc->name); | |
e2d800a3 | 1190 | } else { |
17a38d9c DV |
1191 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1192 | conn_state); | |
e2d800a3 | 1193 | } |
cc4ceb48 DV |
1194 | |
1195 | return 0; | |
1196 | } | |
1197 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1198 | ||
1199 | /** | |
1200 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1201 | * @state: atomic state | |
1202 | * @crtc: DRM crtc | |
1203 | * | |
1204 | * This function walks the current configuration and adds all connectors | |
1205 | * currently using @crtc to the atomic configuration @state. Note that this | |
1206 | * function must acquire the connection mutex. This can potentially cause | |
1207 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1208 | * drivers and helpers should only call this when really needed (e.g. when a | |
1209 | * full modeset needs to happen due to some change). | |
1210 | * | |
1211 | * Returns: | |
1212 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1213 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1214 | * sequence must be restarted. All other errors are fatal. | |
1215 | */ | |
1216 | int | |
1217 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1218 | struct drm_crtc *crtc) | |
1219 | { | |
1220 | struct drm_mode_config *config = &state->dev->mode_config; | |
1221 | struct drm_connector *connector; | |
1222 | struct drm_connector_state *conn_state; | |
1223 | int ret; | |
1224 | ||
1225 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1226 | if (ret) | |
1227 | return ret; | |
1228 | ||
fa3ab4c2 VS |
1229 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1230 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1231 | |
1232 | /* | |
1233 | * Changed connectors are already in @state, so only need to look at the | |
1234 | * current configuration. | |
1235 | */ | |
9a9f5ce8 | 1236 | drm_for_each_connector(connector, state->dev) { |
cc4ceb48 DV |
1237 | if (connector->state->crtc != crtc) |
1238 | continue; | |
1239 | ||
1240 | conn_state = drm_atomic_get_connector_state(state, connector); | |
1241 | if (IS_ERR(conn_state)) | |
1242 | return PTR_ERR(conn_state); | |
1243 | } | |
1244 | ||
1245 | return 0; | |
1246 | } | |
1247 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1248 | ||
e01e9f75 ML |
1249 | /** |
1250 | * drm_atomic_add_affected_planes - add planes for crtc | |
1251 | * @state: atomic state | |
1252 | * @crtc: DRM crtc | |
1253 | * | |
1254 | * This function walks the current configuration and adds all planes | |
1255 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1256 | * when an atomic commit also needs to check all currently enabled plane on | |
1257 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1258 | * to avoid special code to force-enable all planes. | |
1259 | * | |
1260 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1261 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1262 | * a CRTC will not reduce parallism of atomic updates. | |
1263 | * | |
1264 | * Returns: | |
1265 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1266 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1267 | * sequence must be restarted. All other errors are fatal. | |
1268 | */ | |
1269 | int | |
1270 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1271 | struct drm_crtc *crtc) | |
1272 | { | |
1273 | struct drm_plane *plane; | |
1274 | ||
1275 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1276 | ||
1277 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1278 | struct drm_plane_state *plane_state = | |
1279 | drm_atomic_get_plane_state(state, plane); | |
1280 | ||
1281 | if (IS_ERR(plane_state)) | |
1282 | return PTR_ERR(plane_state); | |
1283 | } | |
1284 | return 0; | |
1285 | } | |
1286 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1287 | ||
cc4ceb48 DV |
1288 | /** |
1289 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1290 | * @state: atomic state | |
1291 | * | |
1292 | * This function should be used by legacy entry points which don't understand | |
1293 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1294 | * the slowpath completed. |
cc4ceb48 DV |
1295 | */ |
1296 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1297 | { | |
1298 | int ret; | |
1299 | ||
1300 | retry: | |
1301 | drm_modeset_backoff(state->acquire_ctx); | |
1302 | ||
06eaae46 | 1303 | ret = drm_modeset_lock_all_ctx(state->dev, state->acquire_ctx); |
cc4ceb48 DV |
1304 | if (ret) |
1305 | goto retry; | |
1306 | } | |
1307 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1308 | ||
1309 | /** | |
1310 | * drm_atomic_check_only - check whether a given config would work | |
1311 | * @state: atomic configuration to check | |
1312 | * | |
1313 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1314 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1315 | * backoff dance and restart. All other errors are fatal. | |
1316 | * | |
1317 | * Returns: | |
1318 | * 0 on success, negative error code on failure. | |
1319 | */ | |
1320 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1321 | { | |
5e743737 RC |
1322 | struct drm_device *dev = state->dev; |
1323 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1324 | struct drm_plane *plane; |
1325 | struct drm_plane_state *plane_state; | |
1326 | struct drm_crtc *crtc; | |
1327 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1328 | int i, ret = 0; |
cc4ceb48 | 1329 | |
17a38d9c | 1330 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1331 | |
df63b999 ACO |
1332 | for_each_plane_in_state(state, plane, plane_state, i) { |
1333 | ret = drm_atomic_plane_check(plane, plane_state); | |
5e743737 | 1334 | if (ret) { |
9f4c97a2 VS |
1335 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1336 | plane->base.id, plane->name); | |
5e743737 RC |
1337 | return ret; |
1338 | } | |
1339 | } | |
1340 | ||
df63b999 ACO |
1341 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
1342 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
5e743737 | 1343 | if (ret) { |
fa3ab4c2 VS |
1344 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1345 | crtc->base.id, crtc->name); | |
5e743737 RC |
1346 | return ret; |
1347 | } | |
1348 | } | |
1349 | ||
cc4ceb48 | 1350 | if (config->funcs->atomic_check) |
5e743737 RC |
1351 | ret = config->funcs->atomic_check(state->dev, state); |
1352 | ||
d34f20d6 | 1353 | if (!state->allow_modeset) { |
df63b999 | 1354 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1355 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1356 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1357 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1358 | return -EINVAL; |
1359 | } | |
1360 | } | |
1361 | } | |
1362 | ||
5e743737 | 1363 | return ret; |
cc4ceb48 DV |
1364 | } |
1365 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1366 | ||
1367 | /** | |
1368 | * drm_atomic_commit - commit configuration atomically | |
1369 | * @state: atomic configuration to check | |
1370 | * | |
1371 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1372 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1373 | * backoff dance and restart. All other errors are fatal. | |
1374 | * | |
1375 | * Also note that on successful execution ownership of @state is transferred | |
1376 | * from the caller of this function to the function itself. The caller must not | |
1377 | * free or in any other way access @state. If the function fails then the caller | |
1378 | * must clean up @state itself. | |
1379 | * | |
1380 | * Returns: | |
1381 | * 0 on success, negative error code on failure. | |
1382 | */ | |
1383 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1384 | { | |
1385 | struct drm_mode_config *config = &state->dev->mode_config; | |
1386 | int ret; | |
1387 | ||
1388 | ret = drm_atomic_check_only(state); | |
1389 | if (ret) | |
1390 | return ret; | |
1391 | ||
17a38d9c | 1392 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1393 | |
1394 | return config->funcs->atomic_commit(state->dev, state, false); | |
1395 | } | |
1396 | EXPORT_SYMBOL(drm_atomic_commit); | |
1397 | ||
1398 | /** | |
b837ba0a | 1399 | * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit |
cc4ceb48 DV |
1400 | * @state: atomic configuration to check |
1401 | * | |
1402 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1403 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1404 | * backoff dance and restart. All other errors are fatal. | |
1405 | * | |
1406 | * Also note that on successful execution ownership of @state is transferred | |
1407 | * from the caller of this function to the function itself. The caller must not | |
1408 | * free or in any other way access @state. If the function fails then the caller | |
1409 | * must clean up @state itself. | |
1410 | * | |
1411 | * Returns: | |
1412 | * 0 on success, negative error code on failure. | |
1413 | */ | |
b837ba0a | 1414 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1415 | { |
1416 | struct drm_mode_config *config = &state->dev->mode_config; | |
1417 | int ret; | |
1418 | ||
1419 | ret = drm_atomic_check_only(state); | |
1420 | if (ret) | |
1421 | return ret; | |
1422 | ||
b837ba0a | 1423 | DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state); |
cc4ceb48 DV |
1424 | |
1425 | return config->funcs->atomic_commit(state->dev, state, true); | |
1426 | } | |
b837ba0a | 1427 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 RC |
1428 | |
1429 | /* | |
1430 | * The big monstor ioctl | |
1431 | */ | |
1432 | ||
1433 | static struct drm_pending_vblank_event *create_vblank_event( | |
1434 | struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data) | |
1435 | { | |
1436 | struct drm_pending_vblank_event *e = NULL; | |
2dd500f1 | 1437 | int ret; |
d34f20d6 RC |
1438 | |
1439 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
2dd500f1 DV |
1440 | if (!e) |
1441 | return NULL; | |
d34f20d6 RC |
1442 | |
1443 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
2dd500f1 | 1444 | e->event.base.length = sizeof(e->event); |
d34f20d6 | 1445 | e->event.user_data = user_data; |
d34f20d6 | 1446 | |
2dd500f1 DV |
1447 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); |
1448 | if (ret) { | |
1449 | kfree(e); | |
1450 | return NULL; | |
1451 | } | |
d34f20d6 | 1452 | |
2dd500f1 | 1453 | return e; |
d34f20d6 RC |
1454 | } |
1455 | ||
1456 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1457 | struct drm_mode_object *obj, struct drm_property *prop, | |
1458 | uint64_t prop_value) | |
1459 | { | |
1460 | struct drm_mode_object *ref; | |
1461 | int ret; | |
1462 | ||
1463 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1464 | return -EINVAL; | |
1465 | ||
1466 | switch (obj->type) { | |
1467 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1468 | struct drm_connector *connector = obj_to_connector(obj); | |
1469 | struct drm_connector_state *connector_state; | |
1470 | ||
1471 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1472 | if (IS_ERR(connector_state)) { | |
1473 | ret = PTR_ERR(connector_state); | |
1474 | break; | |
1475 | } | |
1476 | ||
1477 | ret = drm_atomic_connector_set_property(connector, | |
1478 | connector_state, prop, prop_value); | |
1479 | break; | |
1480 | } | |
1481 | case DRM_MODE_OBJECT_CRTC: { | |
1482 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1483 | struct drm_crtc_state *crtc_state; | |
1484 | ||
1485 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1486 | if (IS_ERR(crtc_state)) { | |
1487 | ret = PTR_ERR(crtc_state); | |
1488 | break; | |
1489 | } | |
1490 | ||
1491 | ret = drm_atomic_crtc_set_property(crtc, | |
1492 | crtc_state, prop, prop_value); | |
1493 | break; | |
1494 | } | |
1495 | case DRM_MODE_OBJECT_PLANE: { | |
1496 | struct drm_plane *plane = obj_to_plane(obj); | |
1497 | struct drm_plane_state *plane_state; | |
1498 | ||
1499 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1500 | if (IS_ERR(plane_state)) { | |
1501 | ret = PTR_ERR(plane_state); | |
1502 | break; | |
1503 | } | |
1504 | ||
1505 | ret = drm_atomic_plane_set_property(plane, | |
1506 | plane_state, prop, prop_value); | |
1507 | break; | |
1508 | } | |
1509 | default: | |
1510 | ret = -EINVAL; | |
1511 | break; | |
1512 | } | |
1513 | ||
1514 | drm_property_change_valid_put(prop, ref); | |
1515 | return ret; | |
1516 | } | |
1517 | ||
0f45c26f | 1518 | /** |
9744bf41 | 1519 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1520 | * |
1521 | * @dev: drm device to check. | |
1522 | * @plane_mask: plane mask for planes that were updated. | |
1523 | * @ret: return value, can be -EDEADLK for a retry. | |
1524 | * | |
1525 | * Before doing an update plane->old_fb is set to plane->fb, | |
1526 | * but before dropping the locks old_fb needs to be set to NULL | |
1527 | * and plane->fb updated. This is a common operation for each | |
1528 | * atomic update, so this call is split off as a helper. | |
1529 | */ | |
1530 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1531 | unsigned plane_mask, | |
1532 | int ret) | |
1533 | { | |
1534 | struct drm_plane *plane; | |
1535 | ||
1536 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1537 | * locks (ie. while it is still safe to deref plane->state). We | |
1538 | * need to do this here because the driver entry points cannot | |
1539 | * distinguish between legacy and atomic ioctls. | |
1540 | */ | |
1541 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1542 | if (ret == 0) { | |
1543 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1544 | if (new_fb) | |
1545 | drm_framebuffer_reference(new_fb); | |
1546 | plane->fb = new_fb; | |
1547 | plane->crtc = plane->state->crtc; | |
1548 | ||
1549 | if (plane->old_fb) | |
1550 | drm_framebuffer_unreference(plane->old_fb); | |
1551 | } | |
1552 | plane->old_fb = NULL; | |
1553 | } | |
1554 | } | |
1555 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1556 | ||
d34f20d6 RC |
1557 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
1558 | void *data, struct drm_file *file_priv) | |
1559 | { | |
1560 | struct drm_mode_atomic *arg = data; | |
1561 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
1562 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
1563 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
1564 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
1565 | unsigned int copied_objs, copied_props; | |
1566 | struct drm_atomic_state *state; | |
1567 | struct drm_modeset_acquire_ctx ctx; | |
1568 | struct drm_plane *plane; | |
df63b999 ACO |
1569 | struct drm_crtc *crtc; |
1570 | struct drm_crtc_state *crtc_state; | |
45723728 | 1571 | unsigned plane_mask; |
d34f20d6 RC |
1572 | int ret = 0; |
1573 | unsigned int i, j; | |
1574 | ||
1575 | /* disallow for drivers not supporting atomic: */ | |
1576 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1577 | return -EINVAL; | |
1578 | ||
1579 | /* disallow for userspace that has not enabled atomic cap (even | |
1580 | * though this may be a bit overkill, since legacy userspace | |
1581 | * wouldn't know how to call this ioctl) | |
1582 | */ | |
1583 | if (!file_priv->atomic) | |
1584 | return -EINVAL; | |
1585 | ||
1586 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
1587 | return -EINVAL; | |
1588 | ||
1589 | if (arg->reserved) | |
1590 | return -EINVAL; | |
1591 | ||
1592 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
1593 | !dev->mode_config.async_page_flip) | |
1594 | return -EINVAL; | |
1595 | ||
1596 | /* can't test and expect an event at the same time. */ | |
1597 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
1598 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1599 | return -EINVAL; | |
1600 | ||
1601 | drm_modeset_acquire_init(&ctx, 0); | |
1602 | ||
1603 | state = drm_atomic_state_alloc(dev); | |
1604 | if (!state) | |
1605 | return -ENOMEM; | |
1606 | ||
1607 | state->acquire_ctx = &ctx; | |
1608 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
1609 | ||
1610 | retry: | |
45723728 | 1611 | plane_mask = 0; |
d34f20d6 RC |
1612 | copied_objs = 0; |
1613 | copied_props = 0; | |
1614 | ||
1615 | for (i = 0; i < arg->count_objs; i++) { | |
1616 | uint32_t obj_id, count_props; | |
1617 | struct drm_mode_object *obj; | |
1618 | ||
1619 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
1620 | ret = -EFAULT; | |
ec9f932e | 1621 | goto out; |
d34f20d6 RC |
1622 | } |
1623 | ||
1624 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
b164d31f DA |
1625 | if (!obj) { |
1626 | ret = -ENOENT; | |
1627 | goto out; | |
1628 | } | |
1629 | ||
1630 | if (!obj->properties) { | |
1631 | drm_mode_object_unreference(obj); | |
d34f20d6 | 1632 | ret = -ENOENT; |
ec9f932e | 1633 | goto out; |
d34f20d6 RC |
1634 | } |
1635 | ||
d34f20d6 | 1636 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
b164d31f | 1637 | drm_mode_object_unreference(obj); |
d34f20d6 | 1638 | ret = -EFAULT; |
ec9f932e | 1639 | goto out; |
d34f20d6 RC |
1640 | } |
1641 | ||
1642 | copied_objs++; | |
1643 | ||
1644 | for (j = 0; j < count_props; j++) { | |
1645 | uint32_t prop_id; | |
1646 | uint64_t prop_value; | |
1647 | struct drm_property *prop; | |
1648 | ||
1649 | if (get_user(prop_id, props_ptr + copied_props)) { | |
b164d31f | 1650 | drm_mode_object_unreference(obj); |
d34f20d6 | 1651 | ret = -EFAULT; |
ec9f932e | 1652 | goto out; |
d34f20d6 RC |
1653 | } |
1654 | ||
1655 | prop = drm_property_find(dev, prop_id); | |
1656 | if (!prop) { | |
b164d31f | 1657 | drm_mode_object_unreference(obj); |
d34f20d6 | 1658 | ret = -ENOENT; |
ec9f932e | 1659 | goto out; |
d34f20d6 RC |
1660 | } |
1661 | ||
42c5814c GR |
1662 | if (copy_from_user(&prop_value, |
1663 | prop_values_ptr + copied_props, | |
1664 | sizeof(prop_value))) { | |
b164d31f | 1665 | drm_mode_object_unreference(obj); |
d34f20d6 | 1666 | ret = -EFAULT; |
ec9f932e | 1667 | goto out; |
d34f20d6 RC |
1668 | } |
1669 | ||
1670 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
b164d31f DA |
1671 | if (ret) { |
1672 | drm_mode_object_unreference(obj); | |
ec9f932e | 1673 | goto out; |
b164d31f | 1674 | } |
d34f20d6 RC |
1675 | |
1676 | copied_props++; | |
1677 | } | |
a9cc54ee | 1678 | |
c4749c9a ML |
1679 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
1680 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
1681 | plane = obj_to_plane(obj); |
1682 | plane_mask |= (1 << drm_plane_index(plane)); | |
1683 | plane->old_fb = plane->fb; | |
1684 | } | |
b164d31f | 1685 | drm_mode_object_unreference(obj); |
d34f20d6 RC |
1686 | } |
1687 | ||
1688 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
df63b999 | 1689 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
d34f20d6 RC |
1690 | struct drm_pending_vblank_event *e; |
1691 | ||
d34f20d6 RC |
1692 | e = create_vblank_event(dev, file_priv, arg->user_data); |
1693 | if (!e) { | |
1694 | ret = -ENOMEM; | |
ec9f932e | 1695 | goto out; |
d34f20d6 RC |
1696 | } |
1697 | ||
1698 | crtc_state->event = e; | |
1699 | } | |
1700 | } | |
1701 | ||
1702 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
c4749c9a ML |
1703 | /* |
1704 | * Unlike commit, check_only does not clean up state. | |
1705 | * Below we call drm_atomic_state_free for it. | |
1706 | */ | |
d34f20d6 | 1707 | ret = drm_atomic_check_only(state); |
d34f20d6 | 1708 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
b837ba0a | 1709 | ret = drm_atomic_nonblocking_commit(state); |
d34f20d6 RC |
1710 | } else { |
1711 | ret = drm_atomic_commit(state); | |
1712 | } | |
1713 | ||
ec9f932e | 1714 | out: |
0f45c26f | 1715 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 1716 | |
c4749c9a ML |
1717 | if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
1718 | /* | |
1719 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive, | |
1720 | * if they weren't, this code should be called on success | |
1721 | * for TEST_ONLY too. | |
1722 | */ | |
1723 | ||
1724 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1725 | if (!crtc_state->event) | |
1726 | continue; | |
1727 | ||
2dd500f1 | 1728 | drm_event_cancel_free(dev, &crtc_state->event->base); |
c4749c9a ML |
1729 | } |
1730 | } | |
1731 | ||
ec9f932e ML |
1732 | if (ret == -EDEADLK) { |
1733 | drm_atomic_state_clear(state); | |
1734 | drm_modeset_backoff(&ctx); | |
1735 | goto retry; | |
1736 | } | |
d34f20d6 | 1737 | |
c4749c9a | 1738 | if (ret || arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) |
ec9f932e | 1739 | drm_atomic_state_free(state); |
d34f20d6 RC |
1740 | |
1741 | drm_modeset_drop_locks(&ctx); | |
1742 | drm_modeset_acquire_fini(&ctx); | |
1743 | ||
1744 | return ret; | |
d34f20d6 | 1745 | } |